CN110545164B - Method and apparatus for interference indication in a communication system - Google Patents

Abstract

The present application provides a method and apparatus for an interference indication. The method includes: the communication device receives first indication information; the communication device determines, according to the first indication information, that the demodulation reference signal DMRS of the interference signal is related to the serving cell, and/or the demodulation reference of the interference signal The signal DMRS is associated with a non-serving cell or group of non-serving cells. With the provided embodiment, the receiving end can determine the appropriate interfering DMRS sequence scrambling parameters according to the first indication information, and then determine the accurate interfering DMRS sequence, so that the interference channel can be estimated according to the accurate interfering DMRS sequence, so that the Interference cancellation or interference suppression can be performed by advanced receivers.

Description

Method and apparatus for interference indication in a communication system

technical field

The present application relates to the field of communication technologies, and in particular, to a method and apparatus for interference coordination.

Background technique

In a wireless communication network, for example, in a 5G new radio interface (New radio interface, NR), Orthogonal Frequency Division Multiplexing Access (OFDMA) is generally used as a multiple access method. The main feature of OFDMA is that the transmission resources are divided into mutually orthogonal time-frequency resource elements (ResourceElement, RE), and the signals sent by the sender are all carried on the REs and transmitted to the receiver. The receiving end can separately receive the signal sent on each RE. Considering the fading characteristics of the wireless channel, the signal carried on the RE will be distorted after being transmitted through the channel, and the channel distortion is usually referred to as the channel coefficient. In order to recover the signal at the receiving end, it is necessary to estimate the channel coefficients. In the prior art, a reference signal-based scheme is usually adopted, that is, the transmitting end transmits a known signal on a specific RE, and the receiving end transmits the known signal according to the received signal. The channel coefficients are estimated by the signal and the known signal, and the channel coefficients on other REs are obtained by interpolation according to the estimated channel coefficients, and then the data signals are received and demodulated by using the estimated channel coefficients.

The transmitting end and the receiving end can be equipped with multiple antennas to realize spatial multiplexing transmission using Multiple Input Multiple Output (MIMO) technology, that is, multiple data streams are transmitted on the same time-frequency resources, and each data stream is transmitted on one The transmission is performed on an independent spatial layer, and each spatial layer will be mapped to a different antenna port for transmission, so as to improve the use efficiency of time-frequency resources. Considering that the channel coefficients from different antenna ports to the receiving end may be different, in order for the receiving end to obtain information transmitted on multiple spatial layers, it is necessary to estimate the channel coefficients between each antenna port and the receiving end. Antenna ports are configured with different demodulation reference signals (Demodulation Reference Signal, DMRS), and the DMRS corresponding to different antenna ports can be multiplexed by means of time division, frequency division, and code division.

Traditional wireless communication systems generally have two common duplex modes: frequency division duplex (Frequency Domain Duplex, FDD) and time division duplex (Time Domain Duplex, TDD). In the FDD duplex mode, uplink and downlink communications are performed on different frequency bands, so there is no cross-interference between uplink and downlink communications. In the TDD duplex mode, the uplink and downlink communication is performed on the same frequency band, but in different time slots, and the uplink and downlink ratios between adjacent cells are generally the same, so there is no cross-interference between uplink and downlink. In these two duplex modes, the local cell interference in the cell generally occurs. Taking Figure 1A as an example, the base station sends downlink data to two terminals at the same time on the same frequency domain resources, and the signal sent by the base station to one terminal is The other terminal appears to be the own cell interference within the cell.

In order to adapt the uplink and downlink services more flexibly and improve the throughput of the system, dynamic TDD, flexible duplex and even full duplex technologies will be introduced in the evolution of wireless communication networks. In a dynamic TDD system, the uplink and downlink ratios between different cells may be different, and the data transmission directions between adjacent cells may be different, which may lead to cross-interference between uplink and downlink (as shown in Figure 1B), that is, the base station and the base station interference between terminals and terminal-to-terminal interference. Since the transmit power of the base station is generally high and the height of the base station is high, the probability of the signal between the base stations is line-of-sight transmission is greater, so the interference between the base stations is greater. In addition, two terminals at the edge of adjacent cells may be close to each other, and in this case, the interference between the terminals is relatively large.

In view of the above interference, how to make the receiving end correctly know the interference signal so as to further extract the useful signal has become an urgent problem to be solved.

SUMMARY OF THE INVENTION

Embodiments of the present application provide a method and apparatus for wireless communication.

Embodiments of the present application provide a method and apparatus for wireless communication. The communication device (for example, a network device or a terminal) at the transmitting end sends information including the first indication information, and the communication device (for example, a terminal or a network device) at the receiving end receives the information including the first indication information. The indication information determines that the demodulation reference signal DMRS of the interference signal is related to the serving cell; or it is determined according to the first indication information that the demodulation reference signal DMRS of the interference signal is related to a non-serving cell or a group of non-serving cells; or according to the first indication information The demodulation reference signal DMRS of the interfering signal is determined to be related to the serving cell, and the demodulation reference signal DMRS of the interfering signal is also related to the non-serving cell or group of non-serving cells.

In one design, the communication device at the receiving end determines that the scrambling parameter of the DMRS sequence of the interference signal is related to the serving cell identifier ID according to the first indication information; or determines the DMRS of the interference signal according to the first indication information The scrambling parameters of the sequence are determined based on the serving cell identifier ID.

In one design, the communication device at the receiving end determines that the scrambling parameter of the DMRS sequence of the interference signal is related to the non-serving cell ID or the non-serving cell group ID according to the first indication information; or determines according to the first indication information The scrambling parameter of the DMRS sequence of the interference signal is determined based on the non-serving cell ID or the non-serving cell group ID.

In one design, the communication device at the receiving end determines that the scrambling parameter of the DMRS sequence of the interference signal is related to the serving cell identifier ID according to the first indication information, and the scrambling parameter of the DMRS sequence of the interference signal is also related to the ID of the serving cell. The non-serving cell ID or non-serving cell group ID is related; or the scrambling parameter of the DMRS sequence of the interference signal is determined according to the first indication information is determined based on the serving cell identifier ID, and the scrambling parameter of the DMRS sequence of the interference signal is determined based on the ID of the serving cell. The parameters are also determined based on the non-serving cell ID or non-serving cell group ID.

The above-mentioned first indication information is included in Downlink Control Information (DCI), Uplink Control Information (UCI), Sidelink Control Information (SCI), or Network Control Information (NCI).

In one design, the first indication information indicates information related to the source of the interference signal. The sources of the interference signal are, for example: serving cell, non-serving cell, non-serving cell group, serving cell and non-serving cell, serving cell and non-serving cell group, network, terminal, serving cell network, serving cell terminal, non-serving cell network, or non-serving cell terminals, etc. Optionally, a corresponding relationship between the above-mentioned first indication information and the above-mentioned information related to the source of the interference signal may be configured. Optionally, the above-mentioned corresponding relationship is a corresponding relationship between parameters such as indexes, numbers, and identifiers and the above-mentioned related information of the source of the interference signal. Optionally, the above-mentioned terminal or network device determines the scrambling parameter of the DMRS sequence of the above-mentioned interference signal according to the corresponding relationship and the above-mentioned first indication information.

In another design, the first indication information indicates information related to the interference type of the interference signal. Optionally, the interference type of the interference signal is serving cell interference, non-serving cell interference, non-serving cell group interference, serving cell and non-serving cell interference, serving cell and non-serving cell group interference, network interference, terminal interference, service Cell network interference, serving cell terminal interference, non-serving cell network interference, or non-serving cell terminal interference, etc. Optionally, a corresponding relationship between the above-mentioned first indication information and the above-mentioned information related to the interference type of the interference signal may be configured. Optionally, the above-mentioned corresponding relationship is a corresponding relationship between parameters such as an index, a serial number, an identifier, and the like and the above-mentioned related information of the interference type of the interference signal. Optionally, the communication device at the receiving end determines the scrambling parameter of the DMRS sequence of the interference signal according to the corresponding relationship and the first indication information.

Optionally, the first indication information further indicates a power ratio between the data of the interference signal and the DMRS of the interference signal. Optionally, the power ratio is any one of {0dB, 3dB, 4.77dB}. Optionally, a corresponding relationship between the above-mentioned first indication information and "the power ratio of the data of the above-mentioned interference signal to the DMRS of the above-mentioned interference signal" may be configured. Optionally, the communication device at the receiving end determines a power ratio between the data of the interference signal and the DMRS of the interference signal according to the first indication information.

Optionally, the first indication information further indicates the port of the DMRS of the interference signal and/or the code division multiplexing CDM group of the DMRS of the interference signal. Optionally, the correspondence between the first indication information and "the port of the DMRS of the interference signal and/or the code division multiplexing CDM group of the DMRS of the interference signal" may be configured. Optionally, the communication apparatus at the receiving end determines the port of the DMRS of the interference signal and/or the code division multiplexing CDM group of the DMRS of the interference signal according to the first indication information.

Optionally, the above-mentioned first indication information further indicates a modulation mode of the data of the above-mentioned interference signal. Optionally, the modulation mode is any one of {Quadrature Phase Shift Keying (QPSK), 16 Quadrature Amplitude Modulation (QAM), 64QAM, 256QAM}. Optionally, a corresponding relationship between the above-mentioned first indication information and "the modulation method of the data of the above-mentioned interference signal" may be configured. Optionally, the communication device at the receiving end determines the modulation mode of the data of the interference signal according to the first indication information.

The present application indicates the interference type of the interference signal and the port of the DMRS of the interference signal, the code division multiplexing CDM group of the DMRS of the interference signal, the modulation method of the data of the interference signal, or the data of the interference signal and the interference signal. The power ratio of the DMRS can simultaneously indicate the port of the DMRS of the interference signal, the code division multiplexing CDM group of the DMRS of the interference signal, the modulation method of the data of the interference signal, or the data of the interference signal and the interference signal. When the power ratio of the DMRS is lower, the overhead of the indication information is reduced.

Optionally, the communication apparatus at the transmitting end sends second indication information. The communication device at the receiving end receives the second indication information, and determines the non-serving cell ID or the non-serving cell group ID according to the second indication information.

Optionally, the communication device at the receiving end receives a measurement signal, and determines the non-serving cell ID or non-serving cell group ID according to the measurement signal, where the measurement signal is a synchronization signal, a synchronization signal block, or a channel state information reference Signal CSI-RS.

Optionally, the communication apparatus at the transmitting end sends third indication information. The communication device at the receiving end receives the third indication information, and determines the correspondence between the measurement signal and the non-serving cell ID or the non-serving cell group ID according to the third indication information. Optionally, the above-mentioned terminal or network device determines the non-serving cell ID or the non-serving cell group ID according to the corresponding relationship and the above-mentioned received measurement signal.

Optionally, the communication apparatus at the transmitting end sends fourth indication information. The communication device at the receiving end receives the fourth indication information, and determines the correspondence between the first indication information and the interference signal source or interference type related information according to the fourth indication information. Optionally, the fourth indication information is scheduling information or control information included in the DCI.

The embodiment of the present application solves the problem that the receiving end cannot determine the interference signal in the scenario of coexistence or alternate coexistence of interference from the local cell and interference from neighboring cells by enabling the receiving end to obtain accurate scrambling parameters of the DMRS sequence of the interfering signal or the interference type of the interfering signal. The scrambling parameters of the DMRS sequence lead to the problem that advanced receivers cannot be used for interference cancellation or interference suppression.

In one design, the present application provides a communication device, which can implement the corresponding functions of the communication device at the transmitting end and/or the communication device at the receiving end. The communication device comprises corresponding units or components for performing the above-mentioned method. The units included in the communication apparatus may be implemented by means of software and/or hardware. The communication apparatus may be, for example, a terminal, or a network device (eg, a base station), or a chip, a chip system, a processor, or the like that can support the terminal or network device to implement the above-mentioned functions.

In another design, the present application provides a communication device, comprising: a processor and a memory, the memory is used for storing a program, and when the program is executed by the processor, the communication device is made to implement the above method.

In another design, the present application provides a communication device, including a processing unit and a transceiver unit, the transceiver unit is configured to send or receive indication information used to indicate the correspondence described in the above aspects, the processing unit uses to obtain the corresponding information according to the instruction information. Optionally, a storage unit may also be included, and the storage unit is configured to store the corresponding relationship described in the above method.

The embodiments of the present application further provide a storage medium, on which a computer program is stored, and when the computer program is executed by a processor, any one of the methods described above is implemented.

An embodiment of the present application further provides a chip system, including: a processor configured to support a communication device to implement any of the methods described above.

An embodiment of the present application further provides a communication system, including the communication device at the transmitting end and the communication device at the receiving end.

Description of drawings

1A is a schematic diagram of interference in a local cell;

1B is a schematic diagram of a neighboring cell interference;

1C is a schematic diagram of a communication system to which the method for assisting interference cancellation provided by the present application is applied;

FIG. 1D shows a schematic diagram of an example architecture of a communication system;

2 is a schematic flowchart of a method for assisting interference deletion provided by the present application;

3A is a schematic diagram of a first method for carrying first indication information;

3B is a schematic diagram of a second method for carrying first indication information;

3C is a schematic diagram of a third method for carrying first indication information;

3D is a schematic diagram of a fourth method for carrying first indication information;

FIG. 4 is a schematic flowchart of determining the scrambling parameter of an interfering DMRS sequence provided by the present application;

FIG. 5 is another schematic flowchart of determining the scrambling parameter of an interfering DMRS sequence provided by the present application;

6 is a schematic diagram of a DMRS port and a DMRS CDM group;

FIG. 7 is a schematic structural diagram of a communication device according to an embodiment of the present application;

FIG. 8 is a schematic structural diagram of a terminal according to an embodiment of the present application;

FIG. 9 is a schematic diagram of a communication device according to an embodiment of the present application.

Detailed ways

The interference indication method and apparatus provided by the embodiments of the present invention can be applied to a communication system. FIG. 1C shows a schematic structural diagram of a communication system. The communication system includes one or more network devices (for clarity, network device 10 and network device 20 are shown in the figure), and one or more terminal devices that communicate with the one or more network devices. The terminal equipment 11 and the terminal equipment 12 shown in the figure are connected with the network equipment 10 , and the terminal equipment 21 and the terminal equipment 22 shown in the figure are connected with the network equipment 20 .

The technologies described in the embodiments of the present invention can be used in various communication systems, such as 2G, 3G, 4G, 4.5G, and 5G communication systems, a system in which multiple communication systems are integrated, or a future evolution network. For example, code division multiple access (CDMA), wideband code division multiple access (WCDMA), time division multiple access (TDMA), frequency division multiple access (FDMA) ), orthogonal frequency-division multiple access (OFDMA), single carrier frequency division multiple access (SC-FDMA), long term evolution (LTE) systems, new radio (new radio) , NR) systems, wireless-fidelity (WiFi) systems, worldwide interoperability for microwaveaccess (WiMAX) systems, and 3rd generation partnership project (3GPP) related cellular systems, etc., and other such communication systems.

FIG. 1D shows a schematic diagram of an example of an architecture of a communication system. As shown in FIG. 1D , a network device in a radio access network RAN is a base station (eg, gNB) with a separate architecture for CU and DU. The RAN may be connected to the core network (for example, it may be the core network of LTE, or the core network of 5G, etc.). CU and DU can be understood as the division of the base station from the perspective of logical functions. CUs and DUs can be physically separate or deployed together. The functions of the RAN terminate at the CU. Multiple DUs can share one. One DU can also be connected to multiple CUs (not shown in the figure). The CU and the DU can be connected through an interface, such as an F1 interface. CU and DU can be divided according to the protocol layer of the wireless network. For example, the functions of the packet data convergence protocol (PDCP) layer and the radio resource control (RRC) layer are set in the CU, while the radio link control (RLC), media access control ( The functions of the Media Access Control (MAC) layer, the physical layer and the like are provided in the DU. It can be understood that the division of CU and DU processing functions according to this protocol layer is only an example, and may also be divided in other ways. For example, a CU or DU may be divided into functions with more protocol layers. For example, a CU or DU can also be divided into partial processing functions with a protocol layer. In one design, some functions of the RLC layer and functions of the protocol layers above the RLC layer are placed in the CU, and the remaining functions of the RLC layer and the functions of the protocol layers below the RLC layer are placed in the DU. In another design, the functions of the CU or DU may also be divided according to service types or other system requirements. For example, according to the delay, the functions whose processing time needs to meet the delay requirements are set in the DU, and the functions that do not need to meet the delay requirements are set in the CU. The network architecture shown in Figure 2 can be applied to a 5G communication system, which can also share one or more components or resources with an LTE system. In another design, the CU may also have one or more functions of the core network. One or more CUs can be set centrally or separately. For example, the CU can be set on the network side to facilitate centralized management. The DU can have multiple radio functions, or the radio functions can be set farther away.

The functions of the CU can be implemented by one entity, or the control plane (CP) and the user plane (UP) can be further separated, that is, the control plane (CU-CP) and the user plane (CU-UP) of the CU can be composed of different functions. The CU-CP and the CU-UP can be coupled with the DU to jointly complete the functions of the base station.

In this application, the network device may be any device with a wireless transceiver function. Including but not limited to: Global System for Mobile (GSM) or base station (base transceiverstation, BTS) in CDMA, base station (NodeB) in WCDMA, evolved base station (NodeB or eNB or e- NodeB, evolutional Node B), base station (gNodeB or gNB) or transceiver point (transmission reception point, TRP) in NR, base station of subsequent evolution of 3GPP, access node in WiFi system, wireless relay node, wireless backhaul node, etc. . The base station can be: macro base station, micro base station, pico base station, small base station, relay station, balloon station, etc. Multiple base stations may support the above-mentioned networks of the same technology, or may support the above-mentioned networks of different technologies. A base station may include one or more co-sited or non-co-sited transmission receiving points (TRPs). The network device may also be a wireless controller, a centralized unit (centralized unit, CU), and/or a distributed unit (distributed unit, DU) in a cloud radio access network (cloud radio access network, CRAN) scenario. The network device can also be a server, a wearable device, or a vehicle-mounted device. The following description takes the network device as the base station as an example. The multiple network devices may be base stations of the same type, or may be base stations of different types. The base station can communicate with the terminal equipment, and can also communicate with the terminal equipment through the relay station. The terminal device can communicate with multiple base stations of different technologies. For example, the terminal device can communicate with the base station supporting the LTE network, the base station supporting the 5G network, and the base station supporting the LTE network and the base station of the 5G network. Dual connection.

A terminal is a device with wireless transceiver function, which can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle-mounted; it can also be deployed on water (such as ships, etc.); it can also be deployed in the air (such as aircraft, balloons, etc.) and satellite, etc.). The terminal may be a mobile phone (mobile phone), a tablet computer (Pad), a computer with a wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, an industrial control (industrial) terminal device. wireless terminal in control), vehicle-mounted terminal equipment, wireless terminal in self driving, wireless terminal in remote medical, wireless terminal in smart grid, transportation safety ), wireless terminals in smart cities, wireless terminals in smart homes, wearable terminal devices, and so on. The embodiments of the present application do not limit application scenarios. A terminal may also sometimes be referred to as terminal equipment, user equipment (UE), access terminal equipment, vehicle-mounted terminal, industrial control terminal, UE unit, UE station, mobile station, mobile station, remote station, remote terminal equipment, mobile equipment, UE terminal equipment, terminal equipment, wireless communication equipment, UE proxy or UE device, etc. Terminals can also be stationary or mobile.

When performing interference cancellation or interference suppression at the receiving end based on an advanced receiver, the receiving end needs to know the demodulation reference signal (DMRS) sequence of the interfering signal, estimate the channel of the interfering signal according to the sequence, and then use the useful signal to estimate the channel of the interfering signal. The channel of the desired signal (the channel of the useful signal is estimated according to the DMRS sequence of the useful signal) and the channel of the interference signal are jointly demodulated to recover the useful signal. Both the DMRS sequence of the interfering signal and the DMRS sequence of the wanted signal are generally scrambled using scrambling parameters. In the scenario where only intra-cell interference exists, the scrambling parameters of the DMRS sequence of the interfering signal and the DMRS sequence of the useful signal are the same (for example, both use the cell identifier ID as the scrambling parameter), so the receiving end is in the When the scrambling parameter of the DMRS sequence of the useful signal is known, the scrambling parameter of the DMRS sequence of the interfering signal can be determined, thereby further determining the DMRS sequence of the interfering signal to perform interference channel estimation.

为初始化DMRS序列的加扰参数，且

可以为小区ID，所述小区ID一般为本小区ID或服务小区ID。当然，式1中还包含有其他的参数，例如l为时隙中的符号标识、

为无线帧中的时隙标识。The above-mentioned scrambling of the DMRS sequence is generally accomplished by introducing corresponding scrambling parameters when the DMRS sequence is initialized. For example, in a possible way of initializing the DMRS sequence, the DMRS sequence can be initialized by using c _init satisfying Equation 1, where

is the scrambling parameter for initializing the DMRS sequence, and

It can be a cell ID, and the cell ID is generally the cell ID or the serving cell ID. Of course, Equation 1 also contains other parameters, for example, l is the symbol identifier in the time slot,

It is the time slot identifier in the radio frame.

After the introduction of dynamic TDD, flexible duplex or even full duplex technology, the cross-interference of neighboring cells also becomes serious, and the interference scenario of coexistence or alternating coexistence of interference of the local cell and the interference of adjacent cells will occur. Therefore, it is hoped that the advanced receiver can suppress the interference of the local cell. While interfering with or serving cell interference, adjacent cell interference or non-serving cell interference can also be suppressed. At this time, the receiving end still needs to estimate the interference channel according to the DMRS sequence of the interference signal. However, considering that in the above interference scenario, the interference signal may come from different cells (that is, the current cell or neighboring cells) at different times, or from different cells at the same time, and because the scrambling parameters used by the DMRS sequences in different cells are generally different (for example, the DMRS sequence of the useful signal uses the ID of the local cell as the scrambling parameter, and the DMRS sequence of the interfering signal uses the ID of the adjacent cell as the scrambling parameter), so that the receiving end cannot identify whether the interference signal is the interference of the local cell or the interference of the adjacent cell. Therefore, in the scenario of coexistence or alternate coexistence of interference from the local cell and interference from neighboring cells, the receiver cannot determine the scrambling parameters of the DMRS sequence of the interfering signal, so that the advanced receiver cannot be used for interference cancellation or interference suppression, thereby affecting the system performance.

The method and device for interference indication provided by the embodiments of the present invention solve the problem of coexistence or alternate coexistence of interference in the local cell and interference from neighboring cells by enabling the receiver to obtain accurate scrambling parameters of the DMRS sequence of the interference signal or the interference type of the interference signal. In the scenario, the receiving end cannot determine the scrambling parameters of the DMRS sequence of the interfering signal, which leads to the problem that the advanced receiver cannot be used for interference cancellation or interference suppression.

The technical solutions of the present application will be described in detail below with reference to specific embodiments and accompanying drawings. The following specific embodiments may be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. It should be understood that the functions explained in this application may be implemented by stand-alone hardware circuits, using software running in conjunction with a processor/microprocessor or general purpose computer, using application specific integrated circuits, and/or using one or more digital signal processors. accomplish. When the application describes a method, it can also be implemented in a computer processor and a memory coupled to the processor.

It should be noted that, in this application, the "DMRS of interfering signals" is sometimes also referred to as "interfering DMRS". "Interference signal data" is sometimes referred to as "interference data signal" or "interference signal", which does not affect the understanding of its technical meaning.

FIG. 2 is a flowchart of a method provided by an embodiment of the present application. As shown in FIG. 2, the method of this embodiment may include:

In part 200, the communication device receives the first indication information;

In part 210, the communication device determines an interfering DMRS sequence scrambling parameter according to the first indication information;

In part 220, the communication device determines, according to the first indication information, an interfering DMRS sequence scrambling parameter and a power ratio of the interfering data signal to the interfering DMRS;

In part 230, the communication device determines a power ratio of the interfering data signal to the interfering DMRS according to the first indication information.

It should be noted that parts 210, 220 and 230 are in a parallel relationship, that is, when implementing the method of the present application, one of parts 210, 220, or 230 can be implemented. Various embodiments of the present application will be described in detail below.

In this embodiment, the communication device may be a terminal or a network device. Taking the communication device as a terminal as an example, as shown in FIG. 3A , in section 200, the first indication information may be carried by downlink control information (Downlink Control Information, DCI) sent by the network device; as shown in FIG. 3B , The first indication information may also be carried by side link control information (Sidelink Control Information, SCI) sent by other terminals, where the SCI may also be understood as control information in a terminal-to-terminal (Device to Device, D2D) communication . Taking the communication device as a network device as an example, as shown in FIG. 3C , the first indication information may be carried by uplink control information (Uplink Control Information, UCI) sent by the terminal; as shown in FIG. 3D , the first indication information The information can also be carried by network control information (Network Control Information, NCI) sent by the network device, where the NCI can be information transmitted through a wired interface (such as an X2 interface or an X2-like interface) between network devices, or it can be Information transmitted wirelessly over the air interface between network devices.

In part 210, the communication device determines an interfering DMRS sequence scrambling parameter according to the first indication information.

In a possible implementation manner of section 210, the communication device may determine an interference type according to the first indication information, where the interference type includes interference of the current cell and interference of a neighboring cell, and the communication device determines according to the interference type The identifier ID or signal corresponding to the interfering DMRS sequence scrambling parameter. The ID may be a cell ID, a cell group ID, a UE ID, a UE group ID, a hypercell ID, a hypercell group ID, a carrier ID, a carrier group ID, or the like. The hypercell may contain multiple cells or multiple cell groups. The cell ID is used to identify a cell (a cell). The cell group ID is used to identify a cell group (a cell group), and the cell group may include one or more cells. The UEID is used to identify a UE (a UE). The UE group ID is used to identify a UE group (a UE group), and the UE group may include one or more UEs. The hypercell ID is used to identify a hypercell. The hypercell group ID is used to identify a hypercell group (a hypercell group), and the hypercell group may include one or more hypercells. The carrier ID is used to identify a carrier (a carrier). The carrier group ID is used to identify a carrier group (a carrier group), and the carrier group may include one or more carriers. The cell ID may also be the ID of the current cell and/or the ID of the adjacent cell. When the communication device is a terminal, the ID of the current cell may also be called the ID of the serving cell, and the ID of the adjacent cell may also be called the ID of the non-resident cell. Serving cell ID. The cell group ID may also be understood as a neighbor cell group ID, and when the communication device is a terminal, the neighbor cell group ID may also be referred to as a non-serving cell group ID. The supercell ID can be further divided into the ID of the supercell and the ID of the adjacent supercell. When the communication device is a terminal, the ID of the supercell can also be called the ID of the serving supercell, and the ID of the adjacent supercell. May also be referred to as non-serving hypercell ID. The super cell group ID may also be understood as the adjacent super cell group ID, and when the communication device is a terminal, the adjacent super cell group ID may also be referred to as the non-serving super cell group ID.

It can be understood that the "this cell" in this application may sometimes be referred to as a "serving cell", the "neighboring cell" in this application may also be sometimes referred to as a "non-serving cell", and the "neighboring cell group" in this application. "Sometimes it can also be called "non-serving cell group", which does not affect the understanding of its technical meaning. In addition, it can be understood that the present application does not limit the relationship between network devices and cells; for example, the same network device may serve the same cell or different cells; for example, the same cell may be used by the same network Device services can also be served by different network devices. The interference type in this application may also be referred to as interference source, interference source, source of interference signal, interference source type, interference source type, interference source, interference source type or any other expression with similar meaning, and does not affect the understanding of its technical implications.

The correspondence between the first indication information and the interference type may be configured. The corresponding relationship may be predefined, stored, pre-negotiated, pre-configured or solidified, or may be configured for the terminal by the network device. The first indication information may be represented by an index, a number, an identifier or any other parameters with similar meanings. The interference type can also be configured.

Table 1 presents an example of the first indication information. The interference type is: the current cell, and/or a neighboring cell (which can also be understood as a neighboring cell group). As shown in Table 1, "0" indicates that the interference type is "this cell interference", "1" indicates that the interference type is "neighboring cell interference" (which can also be understood as "neighboring cell group interference"), and "2" indicates the interference type It is "this cell interference" and "neighboring cell interference" (which can also be understood as "neighboring cell group interference").

Table 1

Instructions Type of interference 0 Interference in this cell 1 Neighbor cell interference 2 Interference in this cell and interference in neighboring cells

The present application can configure the expression form or value of the indication information. For example, the indication information may represent the interference type by 1 bit, or by two or more bits to represent the interference type, or by combining with other parameters to represent the interference type.

The source of the indication information and/or the interfering signal may be configured. This application does not limit the number or variety of interference types. For example, the local cell interference can also be further divided into local cell network interference and local cell terminal interference. For another example, the neighbor cell interference can also be further divided into neighbor cell (or neighbor cell group) network interference and neighbor cell (or neighbor cell group) terminal interference. As another example, in some cases, a certain type of interference may not be considered. For example, the common interference of the current cell and neighboring cells is not considered.

Optionally, the interference type may further include one or more of network interference, terminal interference, network interference in the local cell, terminal interference in the local cell, network interference in a neighboring cell, or terminal interference in a neighboring cell. Table 2 presents another example of the first indication information, and the interference types include network interference of the current cell, network interference of neighboring cells, terminal interference of the current cell, and terminal interference of neighboring cells as examples.

Table 2

Instructions Type of interference 0 Network interference in this cell 1 Neighbor cell network interference 2 Terminal interference in this cell 3 Neighboring cell terminal interference

In Table 2, the network interference of neighboring cells can also be understood as the network interference of neighboring cell groups, and the terminal interference of neighboring cells can also be understood as the terminal interference of neighboring cell groups.

Taking Table 1 and the communication device as the terminal as an example, the process of determining the scrambling parameter of the interfering DMRS sequence is specifically described with reference to FIG. 4 . FIG. 4 illustrates that the method for the terminal to determine the scrambling parameter of the interfering DMRS sequence according to the first indication information may include:

In part 400, the terminal obtains the indication information in Table 1.

In part 410, the indication information is "0", and the terminal determines that the interfering DMRS is related to the current cell. Optionally, the terminal may determine that the interfering DMRS scrambling parameter is related to the local cell identifier ID. It can be understood that the interfering DMRS scrambling parameter is related to the ID of the local cell, and it can also be understood that the interfering DMRS scrambling parameter is determined based on the ID of the local cell. For example, in the scenario of interference in the local cell shown in FIG. 1A , the terminal may perform the method described in part 410 and may be applicable.

In part 420, the indication information is "1", and the terminal determines that the interfering DMRS is related to a neighboring cell or a neighboring cell group. Optionally, the terminal may determine that the interfering DMRS scrambling parameter is related to a neighbor cell ID or a neighbor cell group ID. It can be understood that the interfering DMRS scrambling parameter is related to the neighbor cell ID or the neighbor cell group ID, and it can also be understood that the interfering DMRS scrambling parameter is determined based on the neighbor cell ID or the neighbor cell group ID. For example, in the scenario of neighbor cell interference or neighbor cell group interference shown in FIG. 1B , the terminal may execute the method described in part 420 .

In part 430, the indication information is "2", and the terminal determines that the interfering DMRS is related to the current cell and a neighboring cell, or determines that the interfering DMRS is related to the current cell and a neighboring cell group. Optionally, the terminal may determine that the interfering DMRS scrambling parameter is related to the ID of the current cell and the ID of the neighboring cell, or determine that the interfering DMRS scrambling parameter is related to the ID of the current cell and the group ID of the neighboring cell. It can be understood that the interfering DMRS scrambling parameter is related to the ID of the current cell and the ID of the neighboring cell, and it can also be understood that the scrambling parameter of the interfering DMRS is determined based on the ID of the current cell and the ID of the neighboring cell; The scrambling parameter is related to the ID of the local cell and the ID of the adjacent cell group, and it can also be understood that the interfering DMRS scrambling parameter is determined based on the ID of the local cell and the ID of the adjacent cell group. For example, for a terminal in the scenarios shown in FIG. 1A and FIG. 1B at the same time, the terminal may suffer interference from the own cell and neighboring cells, or may suffer from interference from the current cell and the neighboring cell group, the terminal performs the description in part 430. Methods.

It can be understood that, in this embodiment, parts 410, 420, and 430 are in a parallel relationship, that is, when implementing the method of the present application, the terminal needs to determine to implement parts 410 and 420 according to the first indication information. , or one of Section 430. With the provided embodiment, the receiving end can determine the appropriate interfering DMRS sequence scrambling parameters according to the first indication information, and then determine the accurate interfering DMRS sequence, so that the interference channel can be estimated according to the accurate interfering DMRS sequence, enabling advanced The receiver performs interference cancellation or interference suppression.

It can be understood that other values, symbols, variables or identifiers may also be used to identify "local cell interference", "neighbor cell interference", and "local cell interference and adjacent cell interference" in Table 1. For example, Table 3 gives an example of a possible variation of Table 1.

table 3

Instructions Type of interference 0 y0 1 y1 2 y2

In a possible implementation manner, y0 identifies the interference of the own cell, y1 identifies the interference of the neighboring cells (which can also be understood as "neighboring cell group interference"), and y2 identifies the "interference of the own cell" and "the interference of the neighboring cells" (which can also be understood as is "neighboring cell group interference").

It can be understood that this application does not limit the specific relationship between the above-mentioned values, symbols, variables or identifiers and the interference types they identify. For example, in a possible implementation manner, y2 identifies the interference of this cell, and y1 identifies the interference of neighboring cells. (It can also be understood as "neighboring cell group interference"), y0 identifies "this cell interference" and "neighboring cell interference" (which can also be understood as "neighboring cell group interference"). It can be understood that this application does not limit the specific value of the indication information, for example, "3" indicates y0, "4" indicates y1, and "5" indicates y2. In addition, it can be understood that the present application does not limit the number of entries of the indication information, for example, the row whose indication information is "2" may not be included in Table 3.

In another possible implementation manner, y0 indicates that the interfering DMRS sequence scrambling parameter is determined based on a signal sent by a network device, y1 indicates that the interfering DMRS sequence scrambling parameter is determined based on a signal sent by a terminal, and y2 indicates that the interference The DMRS sequence scrambling parameter is determined based on the signal sent by the network device and the signal sent by the terminal; or, y2 indicates that the interfering DMRS sequence scrambling parameter is determined based on the signal sent by the terminal, and y1 indicates that the interfering DMRS sequence scrambling parameter is based on the network device. The transmitted signal is determined, and y0 indicates that the interfering DMRS sequence scrambling parameter is determined based on the signal sent by the network device and the signal sent by the terminal. The signal sent by the network device may be a downlink signal, or a signal sent by one network device to another network device; the signal sent by a terminal may be an uplink signal, or a signal sent by one terminal to another terminal.

The correspondence between the first indication information shown in Table 3 and the source of the interference signal may be configured. The source of the interference signal can be any one of the following: {this cell, a neighboring cell (which can also be understood as a neighboring cell group)}; or, the source of the interference signal can be any one of the following: { This cell, a neighboring cell (or can be understood as a neighboring cell group), this cell and a neighboring cell (or can be understood as a neighboring cell group)}. The corresponding relationship may be predefined, stored, pre-negotiated, pre-configured or solidified, or may be configured for the terminal by the network device. Taking Table 3 as an example, configuring the corresponding relationship between the first indication information and the source of the interference signal can also be understood as configuring the corresponding relationship between the indication information in Table 3 and the interference type (also can be understood as the source of the interference signal); In a possible implementation manner, the corresponding relationship is: the indication information "0" corresponds to the interference of this cell (that is, the source of the interference signal corresponding to the indication information "0" is this cell), and the indication information "1" corresponds to the interference of adjacent cells or Neighboring cell group interference (that is, the source of the interference signal corresponding to the indication information "1" is a neighboring cell or a neighboring cell group), and the indication information "2" corresponds to the interference of the own cell and the interference of the neighboring cell, or the interference of the current cell and the neighboring cell group ( That is, the source of the interference signal corresponding to the indication information "2" is the current cell and the neighboring cell, or the source of the current cell and the neighboring cell group).

It can be understood that other values, symbols, variables or identifiers may also be used to identify the "network interference in this cell", "network interference in adjacent cells", "terminal interference in this cell" and "neighboring cells" in Table 2 above. Terminal Interference".

For example, another possible example of Table 2 is given by taking Table 4 as an example. In a possible implementation manner, y0 represents the network interference of the local cell, y1 represents the network interference of the adjacent cell (which can also be understood as the network interference of the adjacent cell group), y2 represents the terminal interference of the local cell, and y3 represents the terminal interference of the adjacent cell (or It is understood as the terminal interference of the neighboring cell group).

Table 4.

Instructions Type of interference 0 y0 1 y1 2 y2 3 y3

Similar to Table 3, the correspondence between the first indication information and the source of the interference signal shown in Table 4 may be configured. The source of the interference signal can be any one of the following: {network interference in this cell, network interference in neighboring cells (which can also be understood as network interference in neighboring cell groups), terminal interference in this cell, and terminal interference in neighboring cells (which can also be understood as for the neighbor cell group terminal interference)}.

Taking Table 3 and the communication device as the terminal as an example, the process of determining the scrambling parameter of the interfering DMRS sequence is specifically described with reference to FIG. 5 . FIG. 5 illustrates that the method for the terminal to determine the scrambling parameter of the interfering DMRS sequence according to the first indication information may include:

In part 500, the terminal obtains the indication information in Table 3.

In part 510, the indication information is "0", then the terminal determines that the interfering DMRS is related to the local cell; further optionally, the terminal can determine that the interfering DMRS scrambling parameter is related to the local cell identifier ID . It can be understood that the interfering DMRS scrambling parameter is related to the ID of the local cell, and it can also be understood that the interfering DMRS scrambling parameter is determined based on the ID of the local cell. For example, in the scenario shown in FIG. 1A , the terminal that is interfered by the local cell may execute the method described in part 510 .

In part 520, if the indication information is "1", the terminal determines that the interfering DMRS is related to a neighboring cell or a neighboring cell group; further optionally, the terminal may determine that the interfering DMRS scrambling parameter is related to a neighboring cell ID or neighbor cell group ID is related. It can be understood that the interfering DMRS scrambling parameter is related to the neighbor cell ID or the neighbor cell group ID, and it can also be understood that the interfering DMRS scrambling parameter is determined based on the neighbor cell ID or the neighbor cell group ID. For example, in the scenario shown in FIG. 1B , the terminal may be interfered by neighboring cells or neighboring cell groups, and the method described in part 520 may be performed.

In part 530, the indication information is "2", then the terminal determines that the interfering DMRS is related to the current cell and the neighboring cell, or determines that the interfering DMRS is related to the current cell and the neighboring cell group; further optionally, the The terminal may determine that the interfering DMRS scrambling parameter is related to the ID of the current cell and the ID of the neighboring cell, or determine that the interfering DMRS scrambling parameter is related to the ID of the current cell and the group ID of the neighboring cell. It can be understood that the interfering DMRS scrambling parameter is related to the ID of the current cell and the ID of the neighboring cell, and it can also be understood that the scrambling parameter of the interfering DMRS is determined based on the ID of the current cell and the ID of the neighboring cell; The scrambling parameter is related to the ID of the local cell and the ID of the adjacent cell group, and it can also be understood that the interfering DMRS scrambling parameter is determined based on the ID of the local cell and the ID of the adjacent cell group. For example, for a terminal that is in the scenarios shown in FIG. 1A and FIG. 1B at the same time, the terminal may suffer interference from the own cell and neighboring cells, or may suffer from interference from the current cell and the neighboring cell group, the terminal may perform part 530. method described.

It should be noted that parts 510, 520 and 530 in this embodiment are in a parallel relationship, that is, when implementing the method of the present application, the terminal needs to determine to implement parts 510 and 520 according to the first indication information , or one of Section 530. With the provided embodiment, the receiving end can determine an appropriate interfering DMRS sequence scrambling parameter according to the value interference type information provided by the first indication information, and then determine an accurate interfering DMRS sequence, so that the accurate interfering DMRS sequence can be determined according to the accurate interfering DMRS sequence. Estimate interference channels and enable advanced receivers for interference cancellation or interference suppression.

It can be understood that this application does not limit the meaning or significance of the above-mentioned y0, y1, y2 or y3, etc. For example, the y0, y1, y2 or y3, etc. may be an index, a number, an identifier, an enumeration variable or a Boolean. variables, etc.

In this application, "this cell interference" may also be sometimes referred to as "serving cell interference", "neighboring cell interference" in this application may also be sometimes referred to as "non-serving cell interference", and "adjacent cell group interference" in this application "Sometimes it can also be called "non-serving cell group interference", which does not affect the understanding of its technical meaning.

It can be understood that the interfering DMRS sequence scrambling parameters described in FIG. 4 and FIG. 5 are related to the above ID (or can be understood as the interfering DMRS sequence scrambling parameter is determined according to the above ID), which can be understood as the interfering DMRS sequence scrambling. The parameter includes the above ID, and it can also be understood that the interfering DMRS sequence scrambling parameter includes the output of a function taking the above ID as an input.

It can be understood that, Table 1 to Table 4 are only examples of the first indication information. Optionally, the interference types described in Table 1-Table 4 may also be jointly indicated with other attributes in the first indication information.

In a possible implementation manner of the above joint indication, the interference types in Table 1-Table 4 may be indicated jointly with the interference DMRS resource parameter in the first indication information. The interfering DMRS resource parameter may be an interfering DMRS code division multiplexing (Code division multiplexing, CDM) group, may also be an interfering DMRS port parameter, or may be an interfering DMRS CDM group and an interfering DMRS port parameter. It can be understood that the "DMRS port" in this application may also be sometimes referred to as the "DMRS antenna port", which does not affect the understanding of its technical meaning.

FIG. 6 is a schematic diagram of a possible DMRS CDM group, where, taking the DMRS having 6 ports as an example, the distribution of the 6 DMRS ports on 12 REs is illustrated. In Figure 6, the horizontal direction represents the time domain, the vertical direction represents the frequency domain, and each small square represents an RE, in which DMRS ports 0 and 1 occupy the same RE (that is, the top two REs), through the orthogonal code [+ 1,+1] and [+1,-1] are multiplexed, so the REs corresponding to these two DMRS ports can be called a DMRS CDM group. Figure 6 illustrates three DMRS CDM groups: DMRS CDM group 0, carrying DMRS ports 0 and 1; DMRS CDM group 1, carrying DMRS ports 2 and 3; DMRS CDM group 2, carrying DMRS ports 4 and 5.

Tables 5-1 to 5-3 illustrate several examples of the interference type and the interference DMRS port parameter being jointly indicated in the first indication information, where the meanings of y0 and y1 may refer to the description of Table 3.

Taking Table 5-1 as an example, a possible example of the first indication information is given by taking the maximum number of interfering DMRS ports equal to 1 as an example. For example, when the indication information in Table 5-1 is "1", it indicates that the interfering DMRS occupies the first DMRS port, and y0 indicates that the interfering DMRS occupying the first DMRS port is related to the local cell (for example, occupying the first DMRS port) The scrambling parameter of the interfering DMRS sequence of one DMRS port may be related to the ID of the local cell). For another example, when the indication information in Table 5-1 is "2", it indicates that the interfering DMRS occupies the first DMRS port, and y1 indicates that the interfering DMRS occupying the first DMRS port is related to a neighboring cell or neighboring cell group (for example, , the scrambling parameter of the interfering DMRS sequence occupying the first DMRS port is related to the neighbor cell ID or the neighbor cell group ID). For another example, when the indication information in Table 5-1 is "0", it indicates that there is no interference.

Table 5-1

Instructions Interfering DMRS port parameters Type of interference 0 none \ 1 1st DMRS port y0 2 1st DMRS port y1

Taking Table 5-2 as an example, a possible example of the first indication information is given by taking the maximum number of interfering DMRS ports equal to 2 as an example. For example, when the indication information in Table 5-2 is "1", it indicates that the interfering DMRS occupies the first DMRS port, and y0 indicates that the interfering DMRS occupying the first DMRS port is related to the local cell (for example, occupying the first DMRS port) The scrambling parameter of the interfering DMRS sequence of one DMRS port is related to the ID of the local cell). For another example, when the indication information in Table 5-2 is "4", it indicates that the interfering DMRS occupies the second DMRS port, and y1 indicates that the interfering DMRS occupying the second DMRS port is related to a neighboring cell or neighboring cell group (for example, , the scrambling parameter of the interfering DMRS sequence occupying the second DMRS port is related to the neighbor cell ID or the neighbor cell group ID). For another example, when the indication information in Table 5-2 is "7", it indicates that the interfering DMRS occupies the first DMRS port and the second DMRS port, and (y1, y0) indicates that the interfering DMRS occupying the first DMRS port Related to a neighboring cell or neighboring cell group (for example, the interfering DMRS sequence scrambling parameter occupying the first DMRS port is related to the neighboring cell ID or neighboring cell group ID), and the interfering DMRS occupying the second DMRS port is related to The local cell is related (for example, the scrambling parameter of the interfering DMRS sequence occupying the second DMRS port is related to the local cell ID).

Table 5-2

Taking Table 5-3 as an example, a possible example of the first indication information is given taking the maximum number of interfering DMRS ports equal to 3 as an example. For example, when the indication information in Table 5-3 is "1", it indicates that the interfering DMRS occupies the first DMRS port, and y0 indicates that the interfering DMRS occupying the first DMRS port is related to the local cell (for example, occupying the first DMRS port) The scrambling parameter of the interfering DMRS sequence of one DMRS port is related to the ID of the local cell). For another example, when the indication information in Table 5-3 is "6", it indicates that the interfering DMRS occupies the third DMRS port, and y1 indicates that the interfering DMRS occupying the third DMRS port is related to a neighboring cell or neighboring cell group (for example, , the scrambling parameter of the interfering DMRS sequence occupying the third DMRS port is related to the neighbor cell ID or the neighbor cell group ID). For another example, when the indication information in Table 5-3 is "23", it indicates that the interfering DMRS occupies the first DMRS port, the second DMRS port and the third DMRS port, and (y1, y0, y0) indicates that the The interfering DMRS of the first DMRS port is related to the neighboring cell or neighboring cell group (for example, the scrambling parameter of the interfering DMRS sequence occupying the first DMRS port is related to the neighboring cell ID or neighboring cell group ID), The interfering DMRSs of the 2 DMRS ports are related to the local cell (for example, the interfering DMRS sequence scrambling parameters that occupy the second DMRS port are related to the ID of the local cell), and the interfering DMRSs that occupy the third DMRS port are related to the local cell. Correlation (for example, the scrambling parameter of the interfering DMRS sequence occupying the third DMRS port is related to the ID of the current cell).

Table 5-3

Similar to Table 3, the corresponding relationship between the indication information shown in Table 5-1 to Table 5-3, the source of the interference signal, and the interfering DMRS port can also be configured. For example, the corresponding relationship may be predefined, stored, pre-negotiated, pre-configured or fixed, or may be configured for the terminal by the network device. Taking Table 5-1 as an example, configuring the corresponding relationship between the first indication information and the source of the interference signal and the interfering DMRS port can also be understood as configuring the indication information and the interference type in Table 5-1 (which can also be understood as interference. source of the signal) and the corresponding relationship of the parameters of the interfering DMRS ports; in a possible implementation manner, the corresponding relationship is: the indication information "1" corresponds to the interference of the cell (that is, the indication information "1" corresponds to the source of the interference signal This cell), and the first DMRS port, the indication information "2" corresponds to adjacent cell interference or adjacent cell group interference (that is, the source of the interference signal corresponding to indication information "2" is a adjacent cell or adjacent cell group), and the first a DMRS port, and the indication information "0" corresponds to a non-interfering and non-interfering DMRS port.

It can be understood that, when the communication device is a terminal, the terminal will determine the scheduled DMRS port when sending or receiving data, and the scheduled DMRS port should be understood as the terminal receiving data or receiving data. The DMRS port that needs to be used when sending data. At the same time, the terminal can also determine all available DMRS ports, so the interfering DMRS ports in this application may only be the remaining DMRS ports after the scheduled DMRS ports are removed from all available DMRS ports. It should be noted that the "scheduled DMRS" may also sometimes be referred to as "the DMRS of useful signals", which does not affect the understanding of its technical meaning.

Taking the above Table 5-1 and all available DMRS ports including DMRS port 0 and DMRS port 1 as an example, if the terminal determines that the scheduled DMRS port is DMRS port 0, the maximum number of interfering DMRS ports is 1 (that is, interfering DMRS ports). The port can only be DMRS port 1), and the "1st DMRS port" indicated in Table 5-1 is DMRS port 1; if the terminal determines that the scheduled DMRS port is DMRS port 1, the maximum number of interfering DMRS ports is 1 (ie, the interfering DMRS port can only be DMRS port 0), and the "1st DMRS port" indicated in Table 5-1 is DMRS port 0. Taking the above table 5-2 and all available DMRS ports including DMRS port 0, DMRS port 1, DMRS port 2 and DMRS port 3 as examples, if the terminal determines that the scheduled DMRS ports are DMRS ports 0 and 1, then the interference The maximum number of DMRS ports is 2 (that is, the interfering DMRS ports can only be DMRS port 2 and/or DMRS port 3), and the "1st DMRS port" and "2nd DMRS port" indicated in Table 5-2 are respectively are DMRS port 2 and DMRS port 3, or the "1st DMRS port" and "2nd DMRS port" indicated in Table 5-2 are DMRS port 3 and DMRS port 2, respectively. The foregoing description is also applicable to the foregoing Table 5-3 and the subsequent Tables 5-4 to 5-6, which will not be repeated hereafter.

The examples of the first indication information given in Table 5-1 to Table 5-3 above will consume more indication states when the maximum number of interfering DMRS ports is large (it can be understood as Table 5-1, Table 5-2 or The number of rows or valid rows in Table 5-3), indicating that the overhead is large. In order to reduce the indication overhead, the indication state can be reduced under certain premise. For example, to further limit the DMRS ports in the same DMRS CDM group to all correspond to one cell (for example, the DMRS ports in the same DMRS CDM group all correspond to this cell, or the DMRS ports in the same DMRS CDM group all correspond to neighboring cells) cell) as an example, the indication states in the above Tables 5-1 to 5-3 can be reduced to achieve the purpose of reducing the indication overhead.

Taking Table 5-4 as an example, a possible example of the first indication information is given taking the maximum number of interfering DMRS ports equal to 1 and the DMRS ports belonging to the same DMRS CDM group corresponding to only one cell. Compared with Table 5-1, Table 5-4 reduces the indication state that the indication information in Table 5-1 is "2", because "the DMRS port in the same DMRS CDM group corresponds to only one cell" Under the restriction, the first DMRS port in Table 5-4 can be understood as belonging to the same DMRS CDM group as the scheduled DMRS port. Since the scheduled DMRS port is generally from this cell, in this case, the The first DMRS port will not come from a neighboring cell (that is, the first DMRS port will also come from this cell), so there will be no interfering DMRS sequence scrambling parameters and neighboring cell IDs or neighboring cell IDs that occupy the first DMRS port. The case where the neighbor cell group ID is related. Therefore, compared with Table 5-1, the implementation of Table 5-4 reduces one indication state and reduces the indication overhead.

Table 5-4

Instructions Interfering DMRS port parameters Type of interference 0 none \ 1 1st DMRS port y0

Taking Table 5-5 as an example, a possible example of the first indication information is given taking the maximum number of interfering DMRS ports equal to 2 and the DMRS ports belonging to the same DMRS CDM group corresponding to only one cell. Compared with Table 5-2, Table 5-5 reduces the indication states of "6" and "7" in Table 5-2, because the DMRS ports in "the same DMRS CDM group only correspond to "6" and "7" Under the restriction of "one cell", the first DMRS port and the second DMRS port in Table 5-5 can be understood as belonging to the same DMRS CDM group, so the first DMRS port and the second DMRS port The two DMRS ports can only come from the same cell or from the neighboring cells at the same time, so the scrambling parameters of the interfering DMRS sequence occupying the first DMRS port and the scrambling parameters of the interfering DMRS sequence occupying the second DMRS port can only be At the same time, it is related to the ID of the current cell, or it is related to the ID of the neighboring cell at the same time, or both are related to the ID of the neighboring cell group. Therefore, in the content corresponding to the indication information of the example in Table 5-5 as "5" or "6", the indicated interference type (y0, y0) or (y1, y1) is always the same (that is, the parentheses are both y0, or both y1). Therefore, compared with Table 5-2, the implementation of Table 5-5 reduces two indication states and reduces the indication overhead. It can be understood that when there are more than one interfering DMRS ports in Table 5-5 (that is, the indication information is "5" or "6"), the interference types corresponding to the more than one interfering DMRS ports can only be the same. , that is, both are y0 or both are y1. Further, when the indication information in Table 5-5 corresponds to 2 interfering DMRS ports (that is, the indication information is "5" or "6"), the interference types corresponding to the two interfering DMRS ports are the same, that is, y0 or Same as y1.

Table 5-5

Taking Table 5-6 as an example, a possible example of the first indication information is given by taking the maximum number of interfering DMRS ports equal to 3 and the DMRS ports belonging to the same DMRS CDM group corresponding to only one cell. In Table 5-6, it can be understood that the first DMRS port belongs to one DMRS CDM group, and the second DMRS port and the third DMRS port belong to another DMRS CDM group. Therefore, the interference type corresponding to the first DMRS port indicated by any of the indication information in Table 5-6 may be different or the same as the interference type of the second DMRS port, or may be the same as that of the third DMRS port. The interference types are different or the same; however, the interference type corresponding to the second DMRS port indicated by any of the indication information in Table 5-6 must be the same as the interference type of the third DMRS port, which means that the Both the interfering DMRS sequence scrambling parameters of the second DMRS port and the interfering DMRS sequence scrambling parameters occupying the third DMRS port are related to the ID of the current cell, or both are related to the ID of the neighboring cell, or both are related to the neighboring cell ID. Cell group ID is related. Therefore, compared with Table 5-3, the implementation of Table 5-6 reduces 13 indication states and reduces the indication overhead. It can be understood that, when the interfering DMRS port corresponding to the indication information in Table 5-6 and the scheduled DMRS port belong to the same CDM group, the interference type corresponding to the interfering DMRS port corresponding to the indication information is y0. Further, when the number of interference DMRS ports corresponding to the indication information in Table 5-6 is 3 (when the indication information in Table 5-6 is "12" or "13"), the interference corresponding to the 3 interfering DMRS ports There are only two possible states for the type: one state is that there is only one of the three interfering DMRS ports, and the interference type corresponding to only one interfering DMRS port is y0 (that is, intra-cell interference). For example, the indication information in Table 5-6 is: "13"; another state is that the interference type corresponding to all three interfering DMRS ports is y0 (that is, intra-cell interference), for example, when the indication information in Table 5-6 is "12".

Table 5-6

Similar to Table 5-1 to Table 5-3, the corresponding relationship between the indication information shown in Table 5-4 to Table 5-6, the source of the interference signal, and the interference DMRS port can also be configured.

It can be understood that, the example of the joint indication of the interference type and the interfering DMRS CDM group in the first indication information can be obtained after adjustment based on the embodiments described in Table 5-1 to Table 5-6. For example: replace the parameter in the second column of Table 5-1 to Table 5-6 with "Interference DMRS CDM Group", and replace the "DMRS Port" in the second column of Table 5-1 to Table 5-6 with "DMRS CDM" Group".

Taking the communication device as a terminal as an example, the terminal will receive fourth indication information (for example, scheduling information, or control information included in the DCI) from the network device, and determine the scheduled information according to the fourth indication information. DMRS port. Table 6-1 is an example of the fourth indication information. Table 6-1 takes the number of all available DMRS ports equal to 4 as an example, that is, all available DMRS ports include DMRS ports 0, 1, 2 and 3, and DMRS ports 0 and 1 belong to the first CDM group, and DMRS ports 2 and 3 belong to the second CDM group. The indication information in the first column of Table 6-1 can be understood as an index, number or identifier, and the second column is the number of CDM groups that do not carry data in the first CDM group and the second CDM group , and the third column is the index of the scheduled DMRS port of the terminal. For example, when the indication information in Table 6-1 is "0", it means that the first CDM group does not carry data, and DMRS port 0 is scheduled. For another example, when the indication information in Table 6-1 is "7", it means that the first and second CDM groups do not carry data, and DMRS ports 0 and 1 are scheduled. It can be understood that when the terminal is scheduled with 1 DMRS port, the maximum number of corresponding interfering DMRS ports is 3, and the first indication information can be as shown in Table 5-3 or Table 5-6 above; and When the terminal is scheduled with 2 DMRS ports, the maximum number of corresponding interfering DMRS ports is 2, and at this time, the first indication information may be as shown in Table 5-2 or Table 5-5 above.

It should be understood that the terminal will have different understandings of the first indication information according to the content indicated by the fourth indication information, that is, the terminal may jointly determine the first indication according to the first indication information and the fourth indication information The specific meaning of the information; or it can also be understood that the terminal can determine the table corresponding to the first indication information according to the fourth indication information, and then determine the specific meaning of the first indication information according to the determined table; or it can also be understood as , the terminal may determine the correspondence between the first indication information and the source of the interference signal according to the fourth indication information, and then determine the specific meaning of the first indication information according to the correspondence. For example, taking the number of all available DMRS ports equal to 4, if the indication information in Table 6-1 is one of "0", "1", "3", "4", "5" or "6" Any one, it can be determined that the content indicated by the above-mentioned first indication information is in the above-mentioned Table 5-3 or Table 5-6; if the indication information in Table 6-1 is "2", "7", "8" or " 11”, it can be determined that the content indicated by the first indication information is in the above Table 5-2 or Table 5-5; if the indication information in Table 6-1 is “9”, it can be determined that the above-mentioned first The content indicated by an indication information is in the above-mentioned Table 5-1 or Table 5-4.

Table 6-1

The 4 items in Table 6-1 indicating that the information is "12"-"15" are reserved or redundant. Optionally, the redundancy state can be used to indicate the relevant information of the interfering DMRS port, so that the terminal can jointly determine the relevant information of the interfering DMRS port according to the above-mentioned first indication information and the fourth indication information, thereby reducing the first indication. Indicates the overhead required for the information.

Take the fourth indication information shown in Table 6-2 as an example. For example, the indication information in Table 6-2 is "3", indicating that the first and second CDM groups do not carry data, DMRS port 0 is scheduled, and there is no interference on DMRS port 1. For another example, when the indication information in Table 6-2 is "12", it means that the first and second CDM groups do not carry data, and DMRS port 0 is scheduled, but there is interference on DMRS port 1; optional , the interference on the DMRS port 1 can be further determined as the interference of the local cell. At this time, the above-mentioned first indication information no longer needs to indicate the interference type corresponding to DMRS port 1 (for example, the first DMRS port in Table 5-3 or Table 5-6), thereby reducing the indication of the first indication information Overhead (which can be understood as reducing the number of rows or effective rows in Table 5-3 or Table 5-6).

Table 6-2

Table 6-3 shows another example of the fourth indication information, where all available DMRS ports are DMRS ports 0, 1, 2, 3, 4 and 5 as an example, and DMRS port 0 and 1 belong to the 1st CDM group, DMRS ports 2 and 3 belong to the 2nd CDM group, and DMRS ports 4 and 5 belong to the 3rd CDM group. For example, the indication information in Table 6-3 is "11", indicating that the first, second, and third DMRS CDM groups do not carry data, DMRS port 0 is scheduled, and there is no interference on DMRS port 1. For another example, when the indication information in Table 6-3 is "24", it means that the first, second and third CDM groups do not carry data, and DMRS port 0 is scheduled, and there is interference on DMRS port 1; Optionally, the interference on the DMRS port 1 may be further determined as the interference of the local cell.

Table 6-3

In another possible implementation of the above joint indication, the interference type in Table 1-Table 4 is jointly indicated with {interference DMRS resource parameter and modulation mode of the interference data signal} in the first indication information.

Table 7-1 shows an example in which the interference type in Table 1-Table 4 is jointly indicated with {interference DMRS port parameters and modulation mode of the interference data signal} in the first indication information, where the meanings of y0 and y1 are Reference can be made to the above-mentioned relevant part of the description, such as the description of Table 3. The DMRS port can be as shown in FIG. 6 as an example, which will not be repeated here. The modulation order of the interference data signal in Table 7-1 is the modulation method of the interference data signal, where "2" represents Quadrature Phase Shift Keying (QPSK), and "4" represents 16 quadrature amplitude modulation ( Quadrature Amplitude Modulation, QAM), "6" means 64QAM, "8" means 256QAM. Exemplarily, the candidate set of modulation modes indicated by the first indication information in Table 7-1 may be {2, 4, 6, 8}, or {2, 4, 6}, or {2, 4, 6 or 8}, or {2, 4 or 6 or 8}. Preferably, when the number of interfering DMRS ports indicated by the first indication information is small, the candidate set of modulation schemes indicated by the first indication information may include more states, such as {2, 4, 6, 8} in total of 4 state; when the number of interfering DMRS ports indicated by the first indication information is large, the candidate set of modulation modes indicated by the first indication information may include fewer states, such as {2, 4, 6 or 8}, a total of 3 states state, or {2, 4 or 6 or 8} in total 2 states; or, when the indicated number of interference ports is large, the first indication information may not indicate the modulation mode. In this way, the overhead required for the first indication information can be reduced on the premise of ensuring the interference cancellation performance of the communication device. For example, when the number of interfering DMRS ports indicated by the first indication information is 1, the first indication information also indicates the modulation mode of the interfering data signal, and when the number of interfering DMRS ports indicated by the first indication information is greater than 1, the The first indication information does not indicate the modulation mode of the interference data signal. For another example, when the number of interfering DMRS ports indicated by the first indication information is less than or equal to 2, the first indication information also indicates the modulation mode of the interfering data signal, and when the number of interfering DMRS ports indicated by the first indication information is greater than 2 When the first indication information does not indicate the modulation mode of the interference data signal.

It should be noted that, for example, "6 or 8" exists in the candidate set of modulation modes indicated by the first indication information, indicating that the corresponding interference data signal adopts "64QAM or 256QAM" modulation. The interference data signal is blindly detected using 64QAM and 256QAM. This design can reduce the signaling overhead of the first indication information, that is, it is unnecessary to allocate two separate indication states for 64QAM and 256QAM, thereby reducing the number of entries or bits of the first indication information. Preferably, the above-mentioned joint indication is used for high-order modulation schemes, and an independent indication is used for low-order modulation schemes, that is, separate indications are used for both low-order modulation schemes QPSK and 16QAM, and the above-mentioned joint indication is used for high-order modulation schemes 64QAM and 256QAM. instruct. This design mainly considers that for the interference data signal of the low-order modulation method, the receiving end is easier to delete or suppress, so the indication can be more precise and the performance gain can be guaranteed; for the interference data signal of the high-order modulation method, the receiving end is complicated due to the For reasons of degree or power consumption, even if the indication is accurate, it is not easy to delete or suppress, so the indication can be more coarse and the indication overhead is reduced.

Taking Table 7-1 as an example, a possible example of the first indication information is given by taking the maximum number of interfering DMRS ports equal to 1 as an example. For example, when the indication information in Table 7-1 is "1", it indicates that the interfering DMRS occupies the first DMRS port, the interfering data signal adopts QPSK modulation, and y0 indicates that the interfering DMRS is related to the local cell (for example, the interfering DMRS sequence scrambling parameter related to this cell ID). For another example, when the indication information in Table 7-1 is "6", it indicates that the interfering DMRS occupies the first DMRS port, the interfering data signal adopts 64QAM or 256QAM modulation, and y1 indicates that the interfering DMRS is related to a neighboring cell or neighboring cell group (for example, , the scrambling parameter of the interfering DMRS sequence is related to the neighbor cell ID).

Table 7-1

When the maximum number of interfering DMRS ports is 2, the first indication information may be as shown in Table 7-2, Table 7-3 or Table 7-4. For example, when the indication information in Table 7-2 is "1", it indicates that the interfering DMRS occupies the first DMRS port, the interfering data signal adopts QPSK modulation, and y0 indicates that the interfering DMRS is related to the local cell (for example, the interfering DMRS sequence scrambling parameter related to this cell ID). For another example, when the indication information in Table 7-2 is "14", it indicates that the first interfering DMRS occupies the first DMRS port, the first interfering data signal adopts QPSK modulation, and y0 indicates that the first interfering DMRS is related to the local cell (for example, The scrambling parameter of the first interfering DMRS sequence is related to the ID of the local cell); and indicates that the second interfering DMRS occupies the second DMRS port, the second interfering data signal adopts 16QAM modulation, and y0 indicates that the second interfering DMRS is related to the local cell (for example, The second interfering DMRS sequence scrambling parameter is related to the ID of the local cell). For another example, when the indication information in Table 7-2 is "18", it indicates that the first interfering DMRS occupies the first DMRS port, the first interfering data signal adopts 16QAM modulation, and y0 indicates that the first interfering DMRS is related to the local cell (for example, The first interfering DMRS sequence scrambling parameter is related to the ID of this cell); and the second interfering DMRS is indicated to occupy the second DMRS port, the second interfering data signal adopts 64QAM or 256QAM modulation, and y0 indicates that the second interfering DMRS is related to this cell ( For example, the scrambling parameter of the second interfering DMRS sequence is related to the ID of the local cell).

Table 7-2

Table 7-3

Table 7-4

The corresponding relationship between the indication information shown in Tables 7-1 to 7-4 and the source of the interference signal, the modulation order of the interference data signal, and the interference DMRS port can also be configured. For example, the corresponding relationship may be predefined, stored, pre-negotiated, pre-configured or fixed, or may be configured for the terminal by the network device. Taking Table 7-1 as an example, configuring the corresponding relationship between the first indication information and the source of the interference signal, the modulation order of the interference data signal, and the interfering DMRS port can also be understood as configuring the indication information in Table 7-1 and the corresponding relationship. The corresponding relationship between the interference type (which can also be understood as the source of the interference signal), the modulation order of the interference data signal, and the parameters of the interference DMRS port; for example, in a possible implementation, the corresponding relationship is: indication information " 1" corresponds to the interference of this cell (that is, the source of the interference signal corresponding to the indication information "1" is this cell), the modulation order of the interference data signal is 2, and the first DMRS port; the indication information "2" corresponds to the interference of the adjacent cell or the adjacent cell. The cell group interference (that is, the source of the interference signal corresponding to the indication information "2" is a neighboring cell or a neighboring cell group), the modulation order of the interference data signal is 4, and the first DMRS port.

It can be understood that the examples in which the interference type, the interference DMRS CDM group, and the modulation mode of the interference data signal described in Table 1-Table 4 are jointly indicated in the first indication information can be based on the above Table 7-1 to Table 7- 4 is obtained after adjustment of the embodiment described. For example, replace the title of the second column of Table 7-1 to Table 7-4 with "Interfering DMRS CDM Group", and replace "DMRS Port" in the second column of Table 7-1 to Table 7-4 with "DMRS CDM" Group". The table of detailed implementation is not repeated here.

Through the joint indication methods of the above several examples, the overhead of indication information can be reduced when the scrambling parameter of the interfering DMRS sequence, the parameter of the interfering DMRS resource and the modulation mode of the interfering data signal need to be indicated at the same time.

The tables exemplified in the foregoing embodiments of the present application only provide several possible specific indication contents of the first indication information in the present application by way of example. It can be understood that the present application does not exclude other specific indicated contents, as long as The essential contents of the instructions are consistent with the embodiments of the present application, and all belong to the protection scope of the present application.

Optionally, in the embodiment of the present application described in FIG. 4 and FIG. 5 , the terminal needs to obtain the neighbor cell ID or neighbor cell group ID, and then determine the interfering DMRS by using the neighbor cell ID or neighbor cell group ID. Sequence scrambling parameters.

In a possible implementation manner in which the terminal obtains the neighbor cell ID or the neighbor cell group ID, the terminal receives second indication information sent by the network device, and the second indication information may be system information sent by the network device. , the system message includes the neighbor cell ID or the neighbor cell group ID. The terminal determines the neighbor cell ID or the neighbor cell group ID according to the system information sent by the network device.

In another possible implementation manner in which the terminal obtains the neighbor cell ID or the neighbor cell group ID, the terminal receives second indication information sent by other terminals, where the second indication information includes the neighbor cell ID or the adjacent cell group ID. Neighboring cell group ID, wherein the neighboring cell or neighboring cell group is the serving cell or serving cell group of the other terminal. The terminal determines the neighbor cell ID or the neighbor cell group ID according to the second indication information sent by the other terminal.

In another possible implementation manner in which the terminal obtains the neighbor cell ID or the neighbor cell group ID, the terminal receives a synchronization signal, and determines the Neighbor cell ID or neighbor cell group ID. For example, taking two neighboring cells {neighboring cell 1, neighboring cell 2} as an example, their IDs are {neighboring cell ID1, neighboring cell ID2}, respectively, and the synchronization signals corresponding to neighboring cell 1 and neighboring cell 2 are {synchronizing signal 1 respectively , synchronization signal 2}. If the terminal detects the synchronization signal 1, it may determine that the neighbor cell ID is the neighbor cell ID1; if the terminal detects the synchronization signal 2, it may determine that the neighbor cell ID is the neighbor cell ID2. Further, the corresponding relationship between the synchronization signal and the neighboring cell or the neighboring cell group may be predefined, or may be configured by the third indication information sent by the network device to the terminal.

In another possible implementation manner in which the terminal obtains the neighbor cell ID or the neighbor cell group ID, the terminal receives a synchronization signal block, and determines the synchronization signal block according to the corresponding relationship between the synchronization signal block and the neighbor cell or neighbor cell group. The neighbor cell ID or the neighbor cell group ID. For example, take two neighboring cells {neighboring cell 1, neighboring cell 2} as an example, their IDs are {neighboring cell ID1, neighboring cell ID2}, respectively, and the synchronization signal blocks corresponding to neighboring cell 1 and neighboring cell 2 are {sync signal Block 1, Sync Signal Block 2}. If the terminal detects synchronization signal block 1, it may determine that the neighbor cell ID is neighbor cell ID1; if the terminal detects synchronization signal block 2, it may determine that the neighbor cell ID is neighbor cell ID2. Further, the corresponding relationship between the synchronization signal block and the neighboring cell or neighboring cell group may be predefined, or may be configured by the third indication information sent by the network device to the terminal.

In another possible implementation manner in which the terminal obtains the neighbor cell ID or the neighbor cell group ID, the terminal receives the channel state information reference signal CSI-RS, and communicates with the neighbor cell or neighbor cell according to the CSI-RS. The group correspondence determines the neighbor cell ID or neighbor cell group ID. For example, taking two neighboring cells {neighboring cell 1 and neighboring cell 2} as an example, their IDs are {neighboring cell ID1, neighboring cell ID2}, respectively, and the CSI-RS corresponding to neighboring cell 1 and neighboring cell 2 are {CSI- RS1, CSI-RS2}. If the terminal detects CSI-RS1, it can determine that the neighbor cell ID is the neighbor cell ID1; if the terminal detects CSI-RS2, it can determine that the neighbor cell ID is the neighbor cell ID2. Further, the corresponding relationship between the CSI-RS and the neighboring cell or the neighboring cell group may be predefined, or may be configured by the third indication information sent by the network device to the terminal.

It can be understood that the above-mentioned detection of the synchronization signal, the synchronization signal block or the CSI-RS can be understood as that the detected signal strength is greater than or not less than a threshold value, and the threshold value may be predefined or configured.

Through some possible implementations of the above 210, the receiving end can obtain accurate interfering DMRS sequence scrambling parameters or interference types, which solves the problem that the receiving end cannot determine the interfering DMRS sequence scrambling parameters in the scenario where the interference of the local cell and the interference of neighboring cells coexist, resulting in The problem of inability to use advanced receivers for interference cancellation or interference suppression.

In part 220, the communication device determines the interfering DMRS sequence scrambling parameter and the power ratio of the interfering data signal to the interfering DMRS according to the first indication information, that is, the communication device can determine the interference according to the first indication information except that the interference The DMRS sequence scrambling parameter can also determine the power ratio of the interfering data signal to the interfering DMRS. The method for determining the scrambling parameter of the interfering DMRS sequence by the communication device according to the first indication information may refer to the above description of part 210, which will not be repeated here. Only a specific implementation manner in which the communication device determines the power ratio of the interfering data signal to the interfering DMRS according to the first indication information is described herein.

In a possible implementation manner of section 220, the power ratio of the interfering data signal to the interfering DMRS is 4.77dB or 3dB, and the communication device determines the power of the interfering data signal and the interfering DMRS according to the first indication information Is the ratio 4.77dB or 3dB. Table 8 presents another example of the first indication information. As shown in Table 8, when the indication information is "0", it indicates that the power ratio of the interfering data signal to the interfering DMRS is 4.77dB; when the indication information is "1", it indicates the power ratio of the interfering data signal to the interfering DMRS. is 3dB.

Table 8

Instructions Power ratio of interfering data signal to interfering DMRS 0 4.77dB 1 3dB

In another possible implementation manner of section 220, the power ratio of the interfering data signal to the interfering DMRS is 0 dB or 3 dB, and the communication device determines the power of the interfering data signal and the interfering DMRS according to the first indication information Whether the ratio is 0dB or 3dB. Table 9 presents another example of the first indication information. As shown in Table 9, when the indication information is "0", it indicates that the power ratio of the interfering data signal to the interfering DMRS is 0 dB; when the indication information is "1", it indicates that the power ratio of the interfering data signal to the interfering DMRS is 0 dB. 3dB.

Table 9

Instructions Power ratio of interfering data signal to interfering DMRS 0 0dB 1 3dB

In yet another possible implementation manner of Section 220, the power ratio of the interference data signal to the interference DMRS is 0dB, 3dB or 4.77dB, and the communication device determines the interference data signal to the interference according to the first indication information Whether the power ratio of DMRS is 0dB, 3dB or 4.77dB. Table 9 presents another example of the first indication information. As shown in Table 10, when the indication information is "0", it indicates that the power ratio of the interfering data signal to the interfering DMRS is 0 dB; when the indication information is "1", it indicates that the power ratio of the interfering data signal to the interfering DMRS is 0 dB. 3dB; when the indication information is "2", it indicates that the power ratio of the interfering data signal to the interfering DMRS is 4.77dB.

Table 10

Instructions Power ratio of interfering data signal to interfering DMRS 0 0dB 1 3dB 2 4.77dB

The corresponding relationship between the indication information shown in Tables 8 to 10 and the power ratio between the data of the interference signal and the DMRS of the interference signal may be configured. For example, the corresponding relationship may be predefined, stored, pre-negotiated, pre-configured or fixed, or may be configured for the terminal by the network device. Taking Table 8 as an example, configuring the corresponding relationship between the first indication information and the data of the interference signal and the power ratio of the DMRS of the interference signal can also be understood as configuring the indication information in Table 8 and the interference data signal and interference. The corresponding relationship of the power ratio of the DMRS; in a possible implementation manner, the corresponding relationship is: the indication information "0" corresponds to the power ratio of the interference data signal and the interfering DMRS is 4.77dB; the indication information "1" corresponds to The power ratio of the interfering data signal to the interfering DMRS is 3dB.

It can be understood that the above-mentioned Tables 8 to 10 only provide three forms of power ratios of the interference data signal and the interference DMRS that may be indicated by the first indication information in this application. This application does not exclude other indication forms, such as: jointly indicating the above power ratio and other attributes, or predefining the corresponding relationship between the above power ratio and other attributes, so that when other attributes are indicated, it can be implicitly indicated Obtain the above power ratio.

In a possible implementation manner in which the above power ratio and other attributes are jointly indicated, the first indication information jointly indicates the interfering DMRS port parameter and the above power ratio. Table 11 presents another example of the first indication information. For example, when the indication information in Table 11 is "1", it indicates that the interfering DMRS occupies the first DMRS port, and the power ratio of the interfering data signal to the interfering DMRS is 0 dB. For another example, when the indication information in Table 11 is "2", it indicates that the interfering DMRS occupies the second DMRS port, and the power ratio of the interfering data signal to the interfering DMRS is 3dB.

Table 11

The indication information shown in Table 11, the power ratio of the data of the interference signal to the DMRS of the interference signal, and the corresponding relationship of the interference DMRS port may also be configured. For example, the corresponding relationship may be predefined, stored, pre-negotiated, pre-configured or fixed, or may be configured for the terminal by the network device. For example, configuring the power ratio of the first indication information and the data of the interference signal to the DMRS of the interference signal, and the corresponding relationship between the interference DMRS ports can also be understood as configuring the indication information in Table 11 and the interference data signal and the interference data signal. The power ratio of the interfering DMRS and the corresponding relation of the interfering DMRS ports; in a possible implementation manner, the corresponding relation is: the indication information "1" corresponds to the power ratio of the interfering data signal and the interfering DMRS being 0 dB, and The first DMRS port; the indication information "2" corresponds to the power ratio of the interfering data signal to the interfering DMRS being 3dB, and the second DMRS port; the indication information "0" corresponds to the non-interfering and non-interfering DMRS ports.

In another possible implementation manner in which the above-mentioned power ratio and other attributes are jointly indicated, the first indication information jointly indicates the interfering DMRS CDM group and the above-mentioned power ratio. For example, the content indicated by the first indication information may be as shown in Table 12-1 or Table 12-2. For example, when the indication information in Table 12-2 is "1", it indicates that the interfering DMRS occupies the first DMR CDM group, and the power ratio of the interfering data signal to the interfering DMRS is 0 dB. For another example, when the indication information in Table 12-2 is "4", it indicates that the first interfering DMRS occupies the first DMRS CDM group, and the power ratio of the first interfering data signal to the first interfering DMRS is 4.77dB; The second interfering DMRS occupies the second DMRS CDM group, and the power ratio of the second interfering data signal to the second interfering DMRS is 3dB.

Table 12-1

Table 12-2

The indication information shown in Table 12-1 and Table 12-2, the power ratio of the data of the interference signal to the DMRS of the interference signal, and the corresponding relationship of the interference DMRS CDM group may be configured. For example, the corresponding relationship may be predefined, stored, pre-negotiated, pre-configured or fixed, or may be configured for the terminal by the network device. Taking Table 12-1 as an example, configuring the power ratio of the first indication information and the data of the interference signal to the DMRS of the interference signal, and the corresponding relationship of the interference DMRS CDM group can also be understood as configuring Table 12-1 The corresponding relationship between the indication information and the power ratio between the interference data signal and the interfering DMRS, and the interfering DMRS CDM group; in a possible implementation manner, the corresponding relationship is: the indication information "1" corresponds to the interference data signal. The power ratio to the interfering DMRS is 3dB, and the first DMRS CDM group; the indication information "2" corresponds to the power ratio of the interfering data signal to the interfering DMRS is 4.77dB, and the second DMRS CDM group; indication information "0" Corresponds to non-interfering and non-interfering DMRS ports.

In another possible implementation manner in which the above power ratio and other attributes are jointly indicated, the first indication information jointly indicates the interference DMRS port parameter, the above power ratio and the interference type in Table 1-Table 4. Exemplarily, the content indicated by the first indication information may be as shown in Table 13, where the description of y0 and y1 may refer to the description of Table 3. For example, when the indication information in Table 13 is "1", it indicates that the interfering DMRS occupies the first DMRS port, the power ratio between the interfering data signal and the interfering DMRS is 0 dB, and y0 indicates that the interfering DMRS is related to the cell (for example, the interfering DMRS is related to the local cell). The DMRS sequence scrambling parameter is related to the ID of the local cell). For another example, when the indication information in Table 13 is "3", it indicates that the interfering DMRS occupies the second DMRS port, the power ratio between the interfering data signal and the interfering DMRS is 3dB, and y1 represents the interfering DMRS and the adjacent cell or adjacent cell group. Correlation (eg, the interfering DMRS sequence scrambling parameter correlates with the neighbor cell ID or neighbor cell group ID).

Table 13

The corresponding relationship between the indication information shown in Table 13 and the data of the interference signal and the power ratio of the DMRS of the interference signal, the source of the interference signal, and the port of the interference DMRS can be configured. For example, the corresponding relationship may be predefined, stored, pre-negotiated, pre-configured or fixed, or may be configured for the terminal by the network device. For example, configuring the corresponding relationship between the first indication information and the data of the interfering signal and the DMRS of the interfering signal, the source of the interfering signal, and the corresponding relationship of the interfering DMRS port can also be understood as configuring the indication information in Table 13 and The corresponding relationship between the power ratio of the interference data signal and the interference DMRS, the interference type, and the interference DMRS port; The power ratio to the interfering DMRS is 0dB, and the first DMRS port; the indication information "2" corresponds to adjacent cell interference or adjacent cell group interference, the power ratio of the interfering data signal to the interfering DMRS is 3dB, and the second DMRS Port; indication information "0" corresponds to non-interfering and non-interfering DMRS ports.

In another possible embodiment where the above power ratio and other attributes are jointly indicated, the first indication information jointly indicates the parameters of the interfering DMRS port, the modulation mode of the interfering data signal, the above power ratio and all the parameters in Tables 1-4. Describe the type of interference. Exemplarily, the content indicated by the first indication information may be as shown in Table 14, where the description of y0 and y1 may refer to the description of Table 3. For example, when the indication information in Table 14 is "1", it indicates that the interfering DMRS occupies the first DMRS port, the interfering data signal is modulated by QPSK, the power ratio of the interfering data signal and the interfering DMRS is 0dB, and y0 indicates that the interfering DMRS and the interfering DMRS are The local cell is related (eg, the interfering DMRS sequence scrambling parameter is related to the local cell ID). For another example, when the indication information in Table 14 is "3", it indicates that the interfering DMRS occupies the first DMRS port, the interfering data signal is modulated by 64QAM or 256QAM, the power ratio of the interfering data signal and the interfering DMRS is 0dB, and y0 represents The interfering DMRS is related to the own cell (eg, the interfering DMRS sequence scrambling parameter is related to the own cell ID).

Table 14

The corresponding relationship between the indication information and the data of the interference signal and the power ratio of the DMRS of the interference signal, the source of the interference signal, the modulation order of the interference data signal, and the interference DMRS port in Table 14 can be configured. For example, the corresponding relationship is pre-defined, stored, pre-negotiated, pre-configured, or fixed, or the network device may configure the corresponding relationship for the terminal. For example, it is also understandable to configure the corresponding relationship between the first indication information and the data of the interference signal and the DMRS of the interference signal, the source of the interference signal, the modulation order of the interference data signal, and the interference DMRS port In order to configure the corresponding relationship between the indication information in Table 14 and the power ratio of the interference data signal and the interference DMRS, the interference type, the modulation order of the interference data signal, and the interference DMRS port; In a possible implementation manner, the corresponding relationship For example, in Table 14, the indication information "1" corresponds to the interference of this cell, the power ratio of the interfering data signal to the interfering DMRS is 0dB, the modulation order of the interfering data signal is 2, and the first DMRS port; Information "4" corresponds to adjacent cell interference or adjacent cell group interference, the power ratio of the interfering data signal to the interfering DMRS is 0 dB, the modulation order of the interfering data signal is 2, and the second DMRS port.

Through the possible implementation of the above 220 part, the receiving end can obtain accurate interfering DMRS sequence scrambling parameters or interference types, as well as the power ratio of interfering data signal and interfering DMRS, which solves the problem of coexistence of interference of the local cell and interference of neighboring cells and interference of data signals In a scenario where the power difference from the interfering DMRS is variable, the receiver cannot determine the scrambling parameters of the interfering DMRS sequence and the power ratio of the interfering data signal to the interfering DMRS, which leads to the problem that the advanced receiver cannot be used for interference cancellation or interference suppression.

In section 230, the communication device may determine the power ratio of the interfering data signal to the interfering DMRS according to the first indication information without determining the scrambling parameter of the interfering DMRS sequence. description, which will not be repeated here.

Through the possible implementation of the above 230 part, the receiving end can obtain an accurate power ratio of the interference data signal and the interfering DMRS, which solves the problem that the receiving end cannot determine the difference between the interference data signal and the interfering DMRS in the scenario where the power difference between the interfering data signal and the interfering DMRS is variable. The power ratio results in the inability to use advanced receivers for interference cancellation or interference suppression.

It can be understood that the purpose of the exemplary table enumerated in this application is to illustrate the indication information in the table and the interference type in the table, the port of the DMRS of the interference signal, the code division multiplexing CDM group of the DMRS of the interference signal, and the DMRS of the interference signal. The modulation scheme of the data, or the corresponding relationship between the data of the interference signal and the power ratio of the DMRS of the interference signal. This application does not limit the interference type in the table, the port of the DMRS of the interference signal, the code division multiplexing CDM group of the DMRS of the interference signal, the modulation method of the data of the interference signal, or the data of the interference signal and the DMRS of the interference signal. The specific value of the power ratio. This application does not limit the number of entries (such as the number of rows, or the number of columns, or the number of valid rows, or the number of valid columns; the number of valid rows in this application can be understood to exclude the number of rows after reserved rows , the effective number of columns can be understood as the number of columns after excluding the reserved column), and does not limit the above-mentioned interference type, the port of the DMRS of the interference signal, the code division multiplexing CDM group of the DMRS of the interference signal, and the data of the interference signal in the table. The modulation method, or the specific name of the power ratio between the data of the interference signal and the DMRS of the interference signal. All representations that conform to the above-mentioned corresponding relationship shall belong to the protection scope of the present application.

It can be understood that the above-mentioned embodiments of the present application do not limit the maximum number of interfering DMRS ports or the specific number of DMRS CDM groups. In addition, it can also be other non-negative integers (such as 0, 4, 7, etc.). The above embodiments of the present application also do not limit the detailed name of the indicated content in the first indication information, as long as the essential content of the indication is consistent with the embodiment of the present application, it belongs to the protection scope of the present application.

The corresponding relationships shown in the above tables may be configured, and the values of the indication information in the tables are only examples, and may be configured with other values, which are not limited in this application. When configuring the corresponding relationship between the indication information and each parameter, it is not necessarily required that all the corresponding relationships shown in each table must be configured. For example, in the above table, the corresponding relationship shown in some rows may not be configured. For another example, appropriate deformation adjustments can be made based on the above table, for example, splitting, merging, and so on. The names of the parameters shown in the headings in the above tables may also adopt other names that can be understood by the communication device, and the values or representations of the parameters may also be other values or representations that the communication device can understand. When the above tables are implemented, other data structures can also be used, such as arrays, queues, containers, stacks, linear lists, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables, or hash tables. Wait.

It can be understood that, the methods implemented by the communication device in the above method embodiments may also be implemented by components (eg, integrated circuits, chips, etc.) that can be used in the communication device.

Corresponding to the wireless communication methods given in the foregoing method embodiments, the embodiments of the present application further provide a corresponding communication apparatus (sometimes also referred to as communication equipment), where the communication apparatus includes a corresponding module. The modules may be software, hardware, or a combination of software and hardware.

FIG. 7 is a schematic structural diagram of a communication device. The communication apparatus 700 may be the network device 10 or 20 in FIG. 1C , or may be the terminal 11 , 12 , 21 or 22 in FIG. 1 . The communication apparatus may be used to implement the method corresponding to the communication device described in the foregoing method embodiments, and for details, reference may be made to the descriptions in the foregoing method embodiments.

The communication apparatus 700 may include one or more processors 701, and the processors 701 may also be referred to as processing units, which may implement certain control functions. The processor 701 may be a general-purpose processor or a special-purpose processor or the like. For example, it may be a baseband processor or a central processing unit. The baseband processor may be used to process communication protocols and communication data, and the central processing unit may be used to process communication devices (eg, base stations, baseband chips, distributed units (DUs) or centralized units (CUs), etc. ) to control, execute software programs, and process data from software programs.

In an optional design, the processor 701 may also store instructions and/or data 703, and the instructions and/or data 703 may be executed by the processor, so that the communication apparatus 700 executes the foregoing method embodiments The method described in corresponds to the communication device.

In an optional design, the processor 701 may include a transceiver unit for implementing receiving and transmitting functions. For example, the transceiver unit may be a transceiver circuit, or an interface. The circuits or interfaces used to implement the receiving and transmitting functions can be separate or integrated.

In yet another possible design, the communication apparatus 700 may include a circuit, and the circuit may implement the functions of sending or receiving or communicating in the foregoing method embodiments.

Optionally, the communication apparatus 700 may include one or more memories 702, and instructions 704 may be stored thereon, and the instructions may be executed on the processor, so that the communication apparatus 700 executes the above method implementation method described in the example. Optionally, data may also be stored in the memory. Optionally, instructions and/or data may also be stored in the processor. The processor and the memory can be provided separately or integrated together. For example, the various correspondences described in the above method embodiments may be stored in the memory or in the processor.

Optionally, the communication apparatus 700 may further include a transceiver 705 and/or an antenna 706 . The processor 701 may be called a processing unit, and controls the communication apparatus (terminal or network device). The transceiver 705 may be referred to as a transceiver unit, a transceiver, a transceiver circuit or a transceiver, etc., and is used to implement the transceiver function of the communication device.

In one possible design, a communication apparatus 700 (eg, an integrated circuit, wireless device, circuit module, network device, terminal, etc.) may include a processor 701 and a transceiver 705 . The transceiver 705 receives the first indication information; the processor 701 determines, according to the first indication information, that the demodulation reference signal DMRS of the interference signal is related to the serving cell, and/or the demodulation reference signal DMRS of the interference signal is not related to the serving cell. Serving cell or non-serving cell group is related.

The processors and transceivers described in this application may be implemented in integrated circuits (ICs), analog ICs, radio frequency integrated circuits (RFICs), mixed-signal ICs, application specific integrated circuits (ASICs), printed circuit boards (printed circuit boards) circuit board, PCB), electronic equipment, etc. The processor and transceiver can also be fabricated using various IC process technologies, such as complementary metal oxide semiconductor (CMOS), nMetal-oxide-semiconductor (NMOS), P-type Metal oxide semiconductor (positive channel metal oxide semiconductor, PMOS), bipolar junction transistor (Bipolar Junction Transistor, BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.

Although in the above description of the embodiments, the communication apparatus is described by taking a network device or a terminal as an example, the scope of the communication apparatus described in this application is not limited thereto, and the structure of the communication apparatus may not be limited by FIG. 7 . The communication apparatus may be a stand-alone device or may be part of a larger device. For example the device may be:

(1) Independent integrated circuit IC, or chip, or, chip system or subsystem;

(2) A set with one or more ICs, optionally, the IC set may also include storage components for storing data and/or instructions;

(3) ASIC, such as modem (MSM);

(4) Modules that can be embedded in other equipment;

(5) Receivers, terminals, smart terminals, cellular phones, wireless devices, handsets, mobile units, vehicle-mounted devices, network devices, cloud devices, artificial intelligence devices, etc.;

(6) Others, etc.

FIG. 8 provides a schematic structural diagram of a terminal. The terminal can be used in the system shown in FIG. 1C . For convenience of explanation, FIG. 8 only shows the main components of the terminal. As shown in FIG. 8 , the terminal 800 includes a processor, a memory, a control circuit, an antenna, and an input and output device. The processor is mainly used to process communication protocols and communication data, control the entire terminal, execute software programs, and process data of the software programs. The memory is mainly used to store software programs and data. The radio frequency circuit is mainly used for the conversion of the baseband signal and the radio frequency signal and the processing of the radio frequency signal. Antennas are mainly used to send and receive radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, and keyboards, are mainly used to receive data input by users and output data to users.

After the user equipment is powered on, the processor can read the software program in the storage unit, parse and execute the instructions of the software program, and process the data of the software program. When data needs to be sent wirelessly, the processor performs baseband processing on the data to be sent, and outputs the baseband signal to the radio frequency circuit. The radio frequency circuit processes the baseband signal to obtain a radio frequency signal and sends the radio frequency signal through the antenna in the form of electromagnetic waves. . When data is sent to the user equipment, the radio frequency circuit receives the radio frequency signal through the antenna, the radio frequency signal is further converted into a baseband signal, and the baseband signal is output to the processor, and the processor converts the baseband signal into data and processes the data. deal with.

Those skilled in the art can understand that, for the convenience of description, FIG. 8 only shows one memory and a processor. In an actual terminal, there may be multiple processors and memories. The memory may also be referred to as a storage medium or a storage device, etc., which is not limited in this embodiment of the present invention.

As an optional implementation, the processor may include a baseband processor and a central processing unit. The baseband processor is mainly used to process communication protocols and communication data, and the central processing unit is mainly used to control the entire terminal and execute software. Programs that process data from software programs. The processor in FIG. 8 integrates the functions of the baseband processor and the central processing unit. Those skilled in the art can understand that the baseband processor and the central processing unit may also be independent processors, interconnected by technologies such as a bus. Those skilled in the art can understand that a terminal may include multiple baseband processors to adapt to different network standards, a terminal may include multiple central processors to enhance its processing capability, and various components of the terminal may be connected through various buses. The baseband processor may also be expressed as a baseband processing circuit or a baseband processing chip. The central processing unit can also be expressed as a central processing circuit or a central processing chip. The function of processing the communication protocol and communication data may be built in the processor, or may be stored in the storage unit in the form of a software program, and the processor executes the software program to realize the baseband processing function.

In an example, the antenna and the control circuit with a transceiving function can be regarded as the transceiving unit 811 of the terminal 800 , and the processor having the processing function can be regarded as the processing unit 812 of the terminal 800 . As shown in FIG. 8 , the terminal 800 includes a transceiver unit 811 and a processing unit 812 . The transceiving unit may also be referred to as a transceiver, a transceiver, a transceiving device, or the like. Optionally, the device for implementing the receiving function in the transceiver unit 811 may be regarded as a receiving unit, and the device for implementing the transmitting function in the transceiver unit 811 may be regarded as a transmitting unit, that is, the transceiver unit 811 includes a receiving unit and a transmitting unit. Exemplarily, the receiving unit may also be referred to as a receiver, a receiver, a receiving circuit, and the like, and the transmitting unit may be referred to as a transmitter, a transmitter, or a transmitting circuit, or the like. Optionally, the above-mentioned receiving unit and transmitting unit may be an integrated unit, or may be multiple independent units. The above-mentioned receiving unit and transmitting unit may be located in one geographic location, or may be dispersed in multiple geographic locations.

As shown in FIG. 9 , another embodiment of the present application provides a communication apparatus (communication device) 900 . The communication device may be a terminal (for example, the terminal in the system shown in FIGS. 1A, 1B, and 1C), or a component of the terminal (for example, an integrated circuit, a chip, etc.). The communication device may also be a network device (eg, the communication device is a base station device that can be applied to the systems of FIGS. 1A, 1B, 1C, 1D), or a component of a network device (eg, an integrated circuit, a chip, etc.). The communication apparatus may also be other communication modules, which are used to implement the operations corresponding to the communication equipment in the method embodiments of the present application. The communication apparatus 900 may include: a processing module 902 (processing unit). Optionally, a transceiver module 901 (transceiver unit) and a storage module 903 (storage unit) may also be included.

In a possible design, one or more modules as shown in FIG. 9 may be implemented by one or more processors, or by one or more processors and memory; or by one or more processors and a transceiver; or implemented by one or more processors, a memory, and a transceiver, which is not limited in this embodiment of the present application. The processor, memory, and transceiver can be set independently or integrated.

The communication device has the function of implementing the terminal described in the embodiments of the present application. For example, the communication device includes modules or units or means corresponding to the terminal-related steps described in the embodiments of the present application by the terminal. Functions or units or means (means) may be implemented by software, or by hardware, or by executing corresponding software by hardware. For details, further reference may be made to the corresponding descriptions in the foregoing corresponding method embodiments.

Or the communication apparatus has the function of implementing the network equipment described in the embodiments of the present application. For example, the communication apparatus includes modules or units or means (means) corresponding to the network equipment performing the steps involved in the network equipment described in the embodiments of the present application. ), the functions or units or means (means) may be implemented by software, or by hardware, or by executing corresponding software by hardware. For details, further reference may be made to the corresponding descriptions in the foregoing corresponding method embodiments.

Optionally, each module in the communication apparatus 900 in the embodiment of the present application may be used to execute the method described in the embodiment of the present application.

In a possible implementation manner, the transceiver module 901 receives the first indication information; the processing module 902 determines, according to the first indication information, that the demodulation reference signal DMRS of the interference signal is related to the serving cell, and/or the interference signal is The demodulation reference signal DMRS is associated with a non-serving cell or group of non-serving cells.

Optionally, the processing module 902 determines that the scrambling parameter of the DMRS sequence of the interference signal is related to the serving cell identifier ID.

Optionally, the processing module 902 determines that the scrambling parameter of the DMRS sequence of the interference signal is related to a non-serving cell ID or a non-serving cell group ID.

Optionally, the processing module 902 determines one or more of the following information according to the first indication information: the port of the DMRS of the interference signal, the code division multiplexing CDM group of the DMRS of the interference signal, the The modulation method of the data of the interference signal, or the power ratio of the data of the interference signal to the DMRS of the interference signal.

Optionally, the transceiver module 901 receives second indication information, and the processing module 902 determines the non-serving cell ID or the non-serving cell group ID according to the second indication information.

Optionally, the transceiver module 901 receives a measurement signal, and the processing module 902 determines the non-serving cell ID or non-serving cell group ID according to the measurement signal, and the measurement signal is a synchronization signal, a synchronization signal block or a channel Status information reference signal CSI-RS.

Optionally, the transceiver module 901 receives third indication information, and the processing module 902 determines that the measurement signal corresponds to the non-serving cell ID or the non-serving cell group ID according to the third indication information.

Optionally, the power ratio of the data of the interference signal to the DMRS of the interference signal is any one of {0dB, 3dB, 4.77dB}.

Optionally, the modulation mode of the data of the interference signal is any one of {Quadrature Phase Shift Keying (QPSK), 16 Quadrature Amplitude Modulation (QAM), 64QAM, 256QAM}.

Optionally, the first indication information is carried by downlink control information, uplink control information, sidelink control information, or network control information.

Optionally, the processing module 902 configures the corresponding relationship between the first indication information and the source of the interference signal; the processing module 902 determines the corresponding relationship between the first indication information and the source of the interference signal. The demodulation reference signal DMRS of the interfering signal is related to the serving cell, and/or the demodulation reference signal DMRS of the interfering signal is related to the non-serving cell or group of non-serving cells.

Optionally, the processing module 902 determines the correspondence between the first indication information and the source of the interference signal according to the fourth indication information; the processing module 902 determines the correspondence between the first indication information and the source of the interference signal. The demodulation reference signal DMRS of the interfering signal is associated with a serving cell, and/or the demodulation reference signal DMRS of the interfering signal is associated with a non-serving cell or a group of non-serving cells.

Optionally, the source of the interference signal is any one of the following: serving cell; non-serving cell; non-serving cell group; serving cell and non-serving cell; serving cell and non-serving cell group.

Optionally, the processing module 902 configures the corresponding relationship between the first indication information and the data of the interference signal and the power ratio of the DMRS of the interference signal; the processing module 902 according to the first indication information and the The correspondence between the data of the interference signal and the power ratio of the DMRS of the interference signal determines the power ratio of the data of the interference signal to the DMRS of the interference signal.

Those skilled in the art can also understand that various illustrative logical blocks (illustrative logical blocks) and steps (steps) listed in the embodiments of the present application may be implemented by electronic hardware, computer software, or a combination of the two. Whether such functionality is implemented in hardware or software depends on the specific application and overall system design requirements. Those skilled in the art may use various methods to implement the described functions for each specific application, but such implementation should not be construed as exceeding the protection scope of the embodiments of the present application.

The techniques described in this application can be implemented in a variety of ways. For example, these techniques can be implemented in hardware, software, or a combination of hardware. For a hardware implementation, a processing unit for performing the techniques at a communication device (eg, a base station, terminal, network entity, or chip) may be implemented in one or more general-purpose processors, digital signal processors (DSPs), digital Signal Processing Device (DSPD), Application Specific Integrated Circuit (ASIC), Programmable Logic Device (PLD), Field Programmable Gate Array (FPGA), or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or the above in any combination. A general-purpose processor may be a microprocessor, or alternatively, the general-purpose processor may be any conventional processor, controller, microcontroller, or state machine. A processor may also be implemented by a combination of computing devices, such as a digital signal processor and a microprocessor, multiple microprocessors, one or more microprocessors in combination with a digital signal processor core, or any other similar configuration. accomplish.

Those of ordinary skill in the art can understand that the first, second, and other numeral numbers involved in the present application are only for the convenience of description, and are not used to limit the scope of the embodiments of the present application, but also represent the sequence. "And/or", which describes the association relationship of the associated objects, means that there can be three kinds of relationships, for example, A and/or B, which can mean that A exists alone, A and B exist at the same time, and B exists alone. The character "/" generally indicates that the associated objects are an "or" relationship. "At least one" means one or more. At least two means two or more. "At least one", "any one", or similar expressions, refers to any combination of these items, including any combination of single item(s) or plural item(s). For example, at least one item (single, species) of a, b, or c can represent: a, b, c, a-b, a-c, b-c, or a-b-c, where a, b, c can be single or multiple.

The steps of the method or algorithm described in the embodiments of this application may be directly embedded in hardware, instructions executed by a processor, or a combination of the two. The memory may be RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art. For example, a memory can be coupled to the processor such that the processor can read information from, and write information to, the memory. Optionally, the memory can also be integrated into the processor. The processor and memory may be provided in the ASIC, and the ASIC may be provided in the terminal. Alternatively, the processor and the memory may also be provided in different components in the terminal.

In the above-mentioned embodiments, it may be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented in software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated. The computer may be a general purpose computer, special purpose computer, computer network, or other programmable device. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be downloaded from a website, computer, server, or data package. The hub transmits to another website site, computer, server or data packet hub by wire (eg coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (eg infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be accessed by a computer or a data packet storage device such as a server, a data packet center, or the like that includes an integration of one or more available media. The usable media may be magnetic media (eg, floppy disks, hard disks, magnetic tapes), optical media (eg, DVD), or semiconductor media (eg, Solid State Disk (SSD)), among others. Combinations of the above should also be included within the scope of computer-readable media.

The same or similar parts among the various embodiments in this specification may refer to each other. The above-described embodiments of the present application do not limit the protection scope of the present application.

Claims (15)

1. A method for wireless communication, comprising:

configuring a corresponding relation between the first indication information and the source of the interference signal and one or more of the following parameters of the interference signal: a port of a demodulation reference signal DMRS, a Code Division Multiplexing (CDM) group of the DMRS, a modulation mode, or a power ratio of data of the interference signal to the DMRS of the interference signal; the sources of the interference signals are: a serving cell, a non-serving cell group, a serving cell and a non-serving cell, or a serving cell and a non-serving cell group;

receiving the first indication information;

determining that a demodulation reference signal (DMRS) of an interference signal is related to a serving cell and/or the DMRS of the interference signal is related to a non-serving cell or a non-serving cell group according to the corresponding relation between the first indication information and the source of the interference signal;

determining a scrambling parameter for the DMRS based on a serving cell Identifier (ID), a non-serving cell ID, or a non-serving cell group ID associated with the DMRS.

2. The method of claim 1, wherein the determining that the DMRS of the interfering signal is related to a serving cell based on the first indication information comprises: determining that a scrambling parameter of a DMRS sequence of the interfering signal is related to a serving cell Identifier (ID).

3. The method of claim 1 or 2, wherein the determining that the DMRS of the interfering signal is related to a non-serving cell or a non-serving cell group according to the first indication information comprises: determining that a scrambling parameter of a DMRS sequence of the interfering signal is related to a non-serving cell ID or a non-serving cell group ID.

4. The method according to any one of claims 1-3, further comprising:

determining one or more of the following information according to the first indication information: a port of the DMRS of the interference signal, a code division multiplexing, CDM, group of the DMRS of the interference signal, a modulation scheme of data of the interference signal, or a power ratio of the data of the interference signal to the DMRS of the interference signal.

5. The method of claim 3 or 4, further comprising:

and receiving second indication information, and determining the non-service cell ID or the non-service cell group ID according to the second indication information.

6. The method according to claim 3 or 4, characterized in that the method further comprises:

and receiving a measurement signal, and determining the ID of the non-service cell or the ID of the non-service cell group according to the measurement signal, wherein the measurement signal is a synchronization signal, a synchronization signal block or a channel state information reference signal (CSI-RS).

7. The method of claim 6, further comprising:

and receiving third indication information, and determining the corresponding relation between the measurement signal and the non-service cell ID or the non-service cell group ID according to the third indication information.

8. The method according to any one of claims 4-7, further comprising: the power ratio of the data of the interfering signal to the DMRS of the interfering signal is any one of {0dB, 3dB, 4.77dB }.

9. The method according to any one of claims 4-8, further comprising: the modulation mode of the data of the interference signal is any one of { Quadrature Phase Shift Keying (QPSK),16 Quadrature Amplitude Modulation (QAM),64QAM and 256QAM }.

10. The method according to any one of claims 1-9, further comprising: the first indication information is contained in downlink control information DCI, uplink control information UCI, side link control information SCI, or network control information NCI.

11. A method for wireless communication, comprising:

configuring a corresponding relation between the first indication information and the source of the interference signal and one or more of the following parameters of the interference signal: a port of a demodulation reference signal (DMRS), a Code Division Multiplexing (CDM) group of the DMRS, a modulation mode, or a power ratio of data of the interference signal to the DMRS of the interference signal; the sources of the interference signals are: a serving cell, a non-serving cell group, a serving cell and a non-serving cell, or a serving cell and a non-serving cell group;

sending the first indication information;

the corresponding relation between the first indication information and the source of the interference signal is used for determining that the DMRS of the interference signal is related to a serving cell and/or the DMRS of the interference signal is related to a non-serving cell or a non-serving cell group, and the serving cell identifier ID, the non-serving cell ID or the non-serving cell group ID related to the DMRS are used for determining the scrambling parameters of the DMRS.

12. The method of claim 11, wherein the first indication information is used to indicate the interference signal source and one or more of the following parameters of an interference signal: the demodulation method comprises the steps of demodulating a port of a reference signal DMRS, a Code Division Multiplexing (CDM) group of the DMRS, a modulation mode or a power ratio of data of the interference signal to the DMRS of the interference signal.

13. A communications apparatus, comprising: a processor and a memory for storing a program that, when executed by the processor, causes a communication device to perform the method of any of claims 1-10, or the method of claim 11 or 12.

14. A storage medium having stored thereon a computer program which, when executed by a processor, carries out the method of any one of claims 1-10 or the method of claim 11 or 12.

15. A communication system, comprising: communication device for performing the method of any of claims 1 to 10, and communication device for performing the method of claim 11 or 12.

Images