CN118369978A

CN118369978A - User equipment, base station and channel state information measuring method

Info

Publication number: CN118369978A
Application number: CN202180102682.5A
Authority: CN
Inventors: 黎添; 生嘉
Original assignee: Huizhou TCL Cloud Internet Corp Technology Co Ltd
Current assignee: Huizhou TCL Cloud Internet Corp Technology Co Ltd
Priority date: 2021-09-22
Filing date: 2021-09-22
Publication date: 2024-07-19
Also published as: WO2023044630A1

Abstract

A channel state information, CSI, measurement method may be performed in a user equipment, UE, which determines a port index sequence of a channel state information reference signal, CSI-RS, resource from a first transmission/reception point, TRP, according to a CSI reporting configuration to obtain a port index of the first TRP. The UE determines a port index sequence of a CSI-RS resource from a second TRP according to the CSI report configuration to acquire a port index of the second TRP, wherein the port index sequence of the CSI-RS resource from the second TRP is configured. The UE performs CSI measurement of the first TRP using the port index of the first TRP and performs CSI measurement of the second TRP using the port index of the second TRP. The UE reports the CSI measurement result of the first TRP and the CSI measurement result of the second TRP.

Description

User equipment, base station and channel state information measuring method

Technical Field

The present invention relates to the field of Multiple-input Multiple-output (MIMO) wireless communication systems, and more particularly, to a user equipment and CSI measurement and reporting method.

Background

Wireless communication systems of third generation (3G) mobile telephone standards and technologies are well known. Such 3G standards and technologies were developed by the third generation partnership project (3 GPP). Third generation wireless communications have been developed to support macro cellular mobile phone communications, such that communication systems and networks are evolving towards broadband and mobile systems. In a cellular wireless communication system, a User Equipment (UE) is connected to a Radio Access Network (RAN) through a radio link. The RAN includes a set of Base Stations (BSs) that provide radio links with UEs in a base station coverage cell, and a set of BSs that provide interfaces with a Core Network (CN) to provide overall network control. It is understood that the RAN and CN each perform functions related to the entire network. The third generation partnership project has developed a Long Term Evolution (LTE) system, i.e. an evolved universal mobile telecommunications system radio access network (E-UTRAN), for mobile access networks in which one or more macro base stations are supported by base stations called enodebs or enbs (evolved nodebs). LTE is further evolving towards so-called 5G or NR (new radio) systems, where one or more cells are supported by base stations called gnbs.

In order to take advantage of multipath propagation, multiple Input Multiple Output (MIMO) is a method of deploying multiple transmit antennas and multiple receive antennas on a transmitter and receiver to increase radio link capacity. MIMO is a practical technique to improve spectral efficiency by transmitting and receiving multiple data streams simultaneously on the same radio channel. The UE may be equipped with multiple panel entities (i.e., transmission/reception points, TRPs), where one or more panel entities may be activated simultaneously.

Disclosure of Invention

When the UE configures channel state information (CHANNEL STATE information, CSI) feedback without precoding matrix indication (precoding matrix indicator, PMI), if a subset of ports in CSI reference signal (CSI REFERENCE SIGNAL, CSI-RS) resources can be semi-statically configured for rank hypothesis of CSI measurement, there is no mismatch between the precoding assumed for CSI calculation and precoding used for physical downlink shared channel (physical downlink SHARED CHANNEL, PDSCH) transmission. Thus, port index allocation for the UE and the base station should be indicated.

If the radio interference of the UE is not determined, the gNB cannot perfectly determine the rank from the UL channel measurements alone. Therefore, the gNB should transmit the precoded CSI-RS resources to the UE, and the UE may achieve better link adaptation according to the indicated port index of the CSI-RS resources.

The uplink control information (uplink control information, UCI) payload may be reduced if CSI sharing, including Rank Indicator (RI) and channel quality indicator (channel quality indicator, CQI), is possible. Therefore, it is important to design CSI sharing mechanisms.

Thus, there is a need for an enhanced approach to address the potential problem of non-PMI-based CSI measurement and reporting in multiple TRP/panel incoherent joint transmission (non-coherent joint transmission, NCJT) measurement hypotheses.

The invention aims to provide user equipment, a base station and a CSI measurement method.

In a first aspect, an embodiment of the present invention provides a channel state information CSI measurement method, which may be performed in a user equipment UE, the method including:

Determining a port index sequence of a channel state information reference signal (CSI-RS) resource from a first transmission/reception point (TRP) according to a CSI report configuration to acquire a port index of the first TRP, wherein the port index sequence of the CSI-RS resource from the first TRP is configured;

Determining a port index sequence of a CSI-RS resource from a second TRP according to the CSI report configuration to obtain a port index of the second TRP, wherein the port index sequence of the CSI-RS resource from the second TRP is configured; performing CSI measurement of the first TRP using the port index of the first TRP, and performing CSI measurement of the second TRP using the port index of the second TRP; and

Reporting the CSI measurement result of the first TRP and the CSI measurement result of the second TRP.

In a second aspect, embodiments of the present invention provide a user equipment comprising a processor configured to invoke and run a computer program stored in a memory to cause a chip mounted device to perform the methods disclosed by embodiments of the present invention.

In a third aspect, an embodiment of the present invention provides an uplink configuration method executable in a User Equipment (UE), including:

Transmitting a CSI reporting configuration to a User Equipment (UE) through a downlink, wherein the CSI reporting configuration includes a port index sequence of a CSI-RS resource from a first TRP, configures the port index sequence of the CSI-RS resource from the first TRP, the CSI reporting configuration includes a port index sequence of a CSI-RS resource from a second TRP between ports, configures an index of the second TRP, and configures the port index sequence of the CSI-RS resource from the second TRP; and

A CSI measurement of a first TRP based on a port index of the first TRP is received, and a CSI measurement of a second TRP based on a port index of the second TRP is received.

In a fourth aspect, embodiments of the present invention provide a base station comprising a processor configured to invoke and run a computer program stored in a memory to cause a device on which the chip is installed to perform the methods disclosed by embodiments of the present invention.

The method disclosed by the embodiment of the invention can be realized in a chip. The chip may include a processor configured to invoke and run a computer program stored in a memory to cause a device on which the chip is installed to perform the disclosed methods.

The methods disclosed by embodiments of the present invention may be programmed as computer-executable instructions stored in a non-transitory computer-readable medium. A non-transitory computer readable medium that, when loaded into a computer, instructs the processor of the computer to perform the disclosed methods.

The non-transitory computer readable medium may include at least one of the group of: hard disks, CD-ROMs, optical storage devices, magnetic storage devices, read-only memory, programmable read-only memory, erasable programmable read-only memory, EPROM, electrically erasable programmable read-only memory, and flash memory.

The disclosed methods of embodiments of the present invention may be programmed as a computer program product to cause a computer to perform the disclosed methods.

The disclosed methods of embodiments of the present invention may be programmed as a computer program that causes a computer to perform the disclosed methods.

Advantageous effects

The method of the present invention improves non-PMI-based CSI measurement and reporting among a plurality of TRP/panel NCJT measurement hypotheses, including:

Port index allocation;

CSI measurements and reporting; and

CSI sharing.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a diagram illustrating an example of a plurality of TRP/panel SRS transmissions and a plurality of TRP/panel CSI-RS transmissions.

Fig. 2 is a diagram showing an example of single TRP/panel SRS transmission and single TRP/panel CSI-RS transmission.

Fig. 3 shows a schematic diagram of a communication system.

Fig. 4 is a schematic diagram of an embodiment of the disclosed CSI measurement method.

Fig. 5 is a diagram showing an example of a port index sequence of two TRPs.

Fig. 6 is a diagram showing an example of port index sequences of two TRPs.

Fig. 7 is a diagram showing an example of port index sequences of two TRPs.

Fig. 8 is a diagram showing an example of port index sequences of two TRPs.

Fig. 9 is a diagram showing an example of the indication port index of two TRPs.

Fig. 10 is a schematic diagram of a wireless communication system according to an embodiment of the invention.

Detailed Description

The embodiments of the present invention describe in detail technical matters, structural features, achieving objects and effects with reference to the accompanying drawings as follows. In particular, the terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure.

SRS and CSI-RS transmissions based on multiple TRP/panels:

The main idea of the invention is to provide a method of a feedback mechanism that is not based on PMI. A transmitter (e.g., UE) is enabled to apply non-PMI based CSI measurement and reporting in the multi-TRP/panel NCJT measurement hypothesis by this method.

The present invention proposes various solutions to apply CSI measurement and reporting of non-PMI in multiple TRP/panel NCJT measurement hypotheses, including port index assignment, CSI measurement and reporting, CSI sharing between a single TRP and multiple TRP measurement hypotheses. First, regarding port index allocation, the present invention discloses a plurality of methods for indicating port index according to non-PMI port indication parameters. Next, with respect to CSI measurement and reporting, a Rank Indicator (RI) and a channel quality indicator (Channel quality indicator, CQI) are calculated according to a designated port index. Then, for CSI sharing between a single TRP and multiple TRP measurements, a method of RI sharing and CQI sharing is provided to reduce UCI overhead. With these methods, support for CSI measurement and reporting of non-PMIs can be greatly enhanced among multiple TRP/panel NCJT measurement hypotheses.

As shown in fig. 1 (a), for a UE 10b operating in NR in multiple TRP/panel transmissions, SRS may be transmitted to the first TRP 100_1 and the second TRP 100_2 in different transmission occasions so that the UE 10b has multiple opportunities to transmit SRS. Further, a plurality of SRS may be simultaneously transmitted from the plurality of panels 41, 42 and 43 to the plurality of TRP 100_1 and 100_2. SRS transmissions for different TRPs may avoid possible blocking between a single TRP and the UE. Accordingly, SRS transmission to multiple TRPs not only enhances reliability, but also improves coverage.

As shown in fig. 1 (b), for a UE 10b operating in multiple TRP/panel transmissions in NR, CSI-RS may be transmitted from different TRP 100_1 and 100_2, so the base station (e.g., gNB) has multiple opportunities to transmit CSI-RS. Further, multiple CSI-RSs may be received simultaneously from multiple panels 41, 42, and 43. CSI-RS transmissions from multiple TRP transmissions not only enhance reliability, but also improve coverage.

As shown in fig. 2 (a), for a UE 10b operating in a single TRP/panel transmission in NR, srs may be transmitted from a panel (e.g., one of panels 41, 42 or 43) to a first TRP 100_1. Since only one panel is activated, not only transmit power can be saved, but detection in the gNB can also be simplified. As shown in fig. 2 (b), for the UE 10b operating with a single TRP transmission in NR, csi-RS is transmitted from the single TRP 100_1 to the UE 10b.

Since uplink and downlink share the same frequency band in a time-division duplex (TDD) system, channel reciprocity is an important advantage of a TDD system in which a base station (e.g., gNB) can obtain downlink CSI based on uplink channel estimation without additional feedback. Accordingly, the overhead and delay of CSI feedback may be greatly reduced, particularly in a multiple-input multiple-output (MIMO) system configured with multiple antennas. For CSI measurement and reporting that is not PMI based, channel reciprocity plays an important role in CSI acquisition. In this technical field, the UE transmits an SRS to two TRPs, and then the gNB can determine the best precoder for CSI-RS transmission for each TRP link from SRS-based channel measurements. The present invention proposes methods to enhance non-PMI based CSI measurement and reporting in multiple TRP/panel NCJT measurement hypotheses.

Referring to fig. 3, the UE may include a UE 10a and a UE 10b, and the base station may include a base station 20a or 20b. The first TRP and the second TRP may comprise two radio nodes. The two radio nodes may be connected to one base station or two different base stations. Uplink (UL) transmission of control signals or data represents a transmission operation from a UE to a base station. Downlink (DL) transmission of control signals or data represents a transmission operation from a base station to a UE.

Referring to fig. 3, the communication system includes a UE 10a, a base station 20b, and a network entity device 30 for performing the method according to the embodiment of the present invention. The embodiment shown in fig. 3 is for illustration only and is not intended to limit the invention. The communication system may include more UE, BS and CN entities. The connections between the devices and the device components are shown as lines and arrows in the figures. The UE 10a may include a processor 11a, a memory 12a, and a transceiver 13a. The base station 20a may include a processor 21a, a memory 22a, and a transceiver 23a. The base station 20b may include a processor 21b, a memory 22b, and a transceiver 23b. The network entity device 30 may include a processor 31, a memory 32, and a transceiver 33. Each processor 11a, 21b, and 31 may be configured to implement the functions, processes, and/or methods described herein. The radio interface protocol layers may be implemented in the processors 11a, 21b and 31. Each memory 12a, 22b, and 32 is operable to store various programs and information to coordinate the operation of the connected processors. Each transceiver 13a, 23b and 33 is coupled to a connected processor for transmitting and/or receiving radio signals. Each base station 20a and 20b may be one of an eNB, a gNB, or other radio node.

Each processor 11a, 21b, and 31 may include a general purpose Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), other chipset, logic circuit, and/or data processing device. Each of the memories 12a, 22b, and 32 may include Read Only Memory (ROM), random Access Memory (RAM), flash memory, memory cards, storage media, and/or other storage devices. Each transceiver 13a, 23b, and 33 may include baseband circuitry and Radio Frequency (RF) circuitry therein to process radio frequency signals. When the embodiments are implemented in software, the techniques described herein may be implemented with modules, programs, functions, entities, etc. for performing the functions described herein. These modules may be stored in memory and executed by a processor. The memory may be implemented within the processor or external to the processor and can be communicatively coupled to the processor via various means as is known in the art.

The network entity device 30 may be a node in the CN. The CN may include an LTE CN or 5GC, which may include a User Plane Function (UPF), a Session Management Function (SMF), a mobility management function (AMF), a Unified Data Management (UDM), a Policy Control Function (PCF), a Control Plane (CP)/User Plane (UP) split (cup), an authentication server (AUSF), a Network Slice Selection Function (NSSF), and a Network Exposure Function (NEF).

One or more CSI-RS resources (e.g., a first TRP or a second TRP) from a TRP refer to one or more CSI-RS resources configured by the TRP and transmitted in the configuration.

Port index assignment:

When the UE configures CSI feedback without PMI, if the subset of ports in the CSI-RS resource can be semi-statically configured as a ranking hypothesis for CSI measurement, there is no mismatch between the precoding for the CSI calculation hypothesis and the precoding for PDSCH transmission. That is, the gNB applies the same precoding to the PDSCH as the CSI-RS.

Referring to fig. 4, a base station 20 (e.g., base station 20a or 20 b) transmits (210) a CSI report configuration to a UE 10 through a downlink signal (e.g., radio Resource Control (RRC) signaling). The CSI reporting configuration includes CSI-RS resources from a first TRP (e.g., first TRP 100_1) and CSI-RS resources from a second TRP (e.g., second TRP 100_2). The CSI reporting configuration includes a port index sequence of a plurality of port indices of CSI-RS resources of a first TRP, wherein the plurality of port indices are a plurality of port indices taken from the first TRP. The port index sequence of the CSI-RS resource of the first TRP may be configured. The CSI reporting configuration includes a port index sequence of a plurality of port indices of CSI-RS resources of a second TRP, wherein the plurality of port indices are a plurality of port indices taken from the second TRP. The port index sequence of the CSI-RS resource of the second TRP may be configured.

The UE 10 (e.g., UE 10a or UE 10 b) determines a port index sequence of CSI-RS resources of the first TRP according to the CSI reporting configuration to obtain a port index of the first TRP (212). When the port index sequence of the CSI-RS resources of the first TRP is configured, the port index of one or more CSI-RS resources in the first TRP may be referred to as a port index of the first TRP.

The UE 10 determines a port index sequence of CSI-RS resources of the second TRP according to the CSI reporting configuration to obtain a port index of the second TRP (212). When the port index sequence of the CSI-RS resource of the second TRP is configured, the port index of one or more CSI-RS resources in the second TRP may be referred to as a port index of the second TRP.

The UE performs CSI measurement on the first TRP using the port index of the first TRP and performs CSI measurement on the second TRP using the port index of the second TRP (214).

The UE reports back CSI measurements of the first TRP and CSI measurements of the second TRP (216). The base station 20 receives the CSI measurement of the first TRP and the CSI measurement of the second TRP (218). The CSI measurement of the first TRP is based on a port index of the first TRP and the CSI measurement of the second TRP is based on a port index of the second TRP.

One example of a CSI reporting configuration includes a CSI-ReportConfig information element. Examples of CSI-ReportConfig information elements in Technical Specification (TS) 38.331 are as follows:

Table 1: CSI-ReportConfig information element

Higher layer parameters for which there is a non-PMI port indication:

Higher layer parameters indicated by non-PMI ports:

Based on a set of offset values:

If only one upper layer parameter of the non-PMI port indication parameter (e.g., non-PMI-PortIndication) is configured in the CSI reporting configuration, a port index of the CSI-RS resource in the first TRP may be configured in the non-PMI port indication parameter (e.g., non-PMI-PortIndication) and a set of offset values may be indicated to determine a port index of the CSI-RS resource in the second TRP. Thus, configuration of the port index may reduce RRC overhead.

In an embodiment of the present invention, in a non-PMI based CSI measurement and reporting in a multiple TRP/panel scenario, if a UE (e.g., UE 10, 10a or 10 b) configures CSI reporting configuration (e.g., higher layer parameter CSI-ReportConfig) and reporting number (e.g., higher layer parameter reportquality) set to 'cri-RI-CQI', a port index sequence of CSI-RS resources from a first TRP may be configured in a non-PMI port indication parameter (e.g., non-PMI-PortIndication), and a port index sequence of CSI-RS resources from a second TRP may be determined according to the port index sequence of the first TRP and an offset value provided according to rank (rank), the offset value may be predefined or signaled by DCI, MAC CE or RRC, and RI _max = min (8, P), where P is the number of ports in CSI-RS resources.

Specifically, a non-PMI port indication parameter (e.g., non-PMI-PortIndication) determines a port index sequence of a first TRP, wherein the port index is selected from CSI-RS resources of the first TRP configuration and transmission. Regarding the port index sequence of the first TRP, CSI-RS resources may be configured from the first TRP, the port index of each CSI-RS resource being configured according to an ordered arrangement of linked CSI resource indices (e.g., upper layer parameters NZP-CSI-RS-ResourceId) linked to CSI reporting configurations by resources of channel measurement parameters (e.g., higher layer parameters resourcesForChannelMeasurement), wherein CSI-RS resources are transmitted from the first TRP. In the port indexes of each CSI-RS resource, the port indexes of m ports are arranged in the order of rank m, that is, the port indexes of m ports are expressed as: Wherein the method comprises the steps of The CSI-RS port index of m ports at rank m is represented, and R e {1,2, …, RI _max }, and RI _max = min (8, P), where P is the port number in the CSI-RS resource.

The NZP-CSI-RS-Resource information element is as follows:

table 2: NZP-CSI-RS-resource information element

The NZP-CSI-RS-ResourceId information element is as follows:

Table 3: NZP-CSI-RS-ResourceId information element

For the CSI-RS resource of the second TRP configured in CSI resource setup related to CSI reporting configuration (e.g., CSI-ReportConfig), port index of rank m (i.e.) Is that Where offset _(m-1) is the offset corresponding to rank m, m=1, 2, …, RI _max, and RI _max =min (8, P), where P is the number of ports in the CSI-RS resource. In a special case, if the multiple offsets of RI _max are the same value, this is equivalent to representing a single offset. More specifically, if the multiple offsets of RI _max are equal to 0, it means that the port indexes of CSI-RS resources from two TRPs are the same for a certain rank.

Two sets of port indexes configured in the non-PMI port indication parameter:

if only one higher layer parameter (e.g., non-PMI-PortIndication) of the non-PMI port indication parameters is configured in the CSI reporting configuration, the port index of the CSI-RS resource of the first TRP and the port index of the CSI-RS resource of the second TRP may be configured at the same non-PMI port indication parameter (e.g., non-PMI-PortIndication). Further, port indexes of the same rank of CSI-RS resources from different TRPs may be the same. Thus, configuration of the port index may reduce RRC overhead and flexibility.

In an embodiment of the present invention, for non-PMI measurement and reporting in a multiple TRP/panel scenario, if the UE configures CSI reporting configuration (e.g., upper layer parameter CSI-ReportConfig) and sets the reporting number (e.g., upper layer parameter reportquality) to "cri-RI-CQI", a port index sequence (e.g., non-PMI-PortIndication) corresponding to at least 2 CSI-RS resources may be configured in the non-PMI port indication parameter. For example, if the configured CSI-RS resource number is 2, the port index will be configured as CSI-RS resources of the first TRP and CSI-RS resources of the second TRP, respectively. That is, a port index sequence of a CSI-RS resource of a first TRP and a port index sequence of a CSI-RS resource of a second TRP are configured in a non-PMI port indication parameter (e.g., non-PMI-PortIndication). (1) The port index is configured according to the sequence of the resource indexes

If the CSI-RS port indexes of the two TRPs are configured according to the sequential arrangement of the corresponding CSI-RS resource indexes (e.g., the upper layer parameter NZP-CSI-RS-ResourceId), there is less influence on the specification in the associated CSI resource setting indicated by the resource of the channel measurement parameter (e.g., the upper layer parameter resourcesForChannelMeasurement).

The non-PMI port indication parameter (e.g., non-PMI-PortIndication) determines a port index sequence of a first TRP and a second TRP, wherein the port index of the first TRP is selected from CSI-RS resources transmitted by the first TRP and the port index of the second TRP is selected from CSI-RS resources transmitted by the second TRP.

Regarding the order of the port indexes, the port indexes of at least 2 CSI-RS resources may be configured, and the port index of each CSI-RS resource is configured according to an ordered arrangement of the corresponding associated CSI-RS resource indexes (e.g., upper layer parameters NZP-CSI-RS-ResourceId), which are associated to the CSI reporting configuration in the linked CSI resource setting (e.g., higher layer parameters resourcesForChannelMeasurement) indicated by the resource of the channel measurement parameters, wherein the port indexes of the CSI-RS resources from the first TRP and the second TRP may be configured in a single sequence. In the port indexes of each CSI-RS resource, the port indexes of m ports are arranged in the order of rank m, that is, the port indexes of m ports are expressed as: Wherein the method comprises the steps of The CSI-RS port index of m ports at rank m is represented, and R e {1,2, …, RI _max }, and RI _max = min (8, P), where P is the port number in the CSI-RS resource.

In an example, the non-PMI port indication parameter (e.g., non-PMI-PortIndication) may include one or K1 higher layer parameters for port index corresponding to an eight rank parameter (e.g., portIndexFor8 Ranks) of the first TRP and one or K2 higher layer parameters for port index corresponding to an eight rank parameter (e.g., portIndexFor8 Ranks) of the second TRP. Examples of detailed sequences of port indexes of the first TRP and the second TRP are as follows:

Table 4:

The port index is represented by PortIndex, portIndex, or PortIndex8 parameters in portIndex2, portIndex, 4, or portIndex. Parameters portIndex, portIndex, 4 and portIndex are included in parameters PortIndexFor8 Ranks.

As shown in fig. 5, the port numbers of the first and second CSI-RS resources are 8, i.e., a variable of port index, where i=0, 1, …,7. For two CSI-RS resources, the port index for the same rank indication is the same. For example, for rank 4, the indication port index of the first CSI-RS resource and the second CSI-RS resource is p ₀,p₁,p₂,p₃. Since precoders for the first CSI-RS resource and the second CSI-RS resource may be different, the UE may select ports of different ranks according to channel conditions.

(2) The port index is configured based on two groups:

since the non-PMI port indication parameter (e.g., non-PMI-PortIndication) determines the port index sequence, if the port index sequence is divided into two groups and each group of port indexes corresponds to CSI-RS resources from separate TRPs, the UE can easily obtain the port indexes of two TRPs.

In an embodiment of the present invention, for CSI measurement and reporting of non-PMI in a plurality of TRP/panel scenarios, a non-PMI port indication parameter (e.g., non-PMI-PortIndication) determines a combined sequence of port indexes, the sequence of port indexes being divided into two groups, including a first group of port indexes and a second group of port indexes, wherein the first group of port indexes corresponds to CSI-RS resources from a first TRP and the second group of port indexes corresponds to CSI-RS resources in a second group of TRP. That is, the first set of port indices includes port index sequences of CSI-RS resources from a first TRP, and the second set of port indices includes port index sequences of CSI-RS resources from a second TRP.

For a first set of port indices of a first TRP, a port index of up to K1 CSI-RS resources may be configured, and the port index of each CSI-RS resource is configured in a corresponding CSI resource setting according to a sequential permutation of associated CSI-RS resource indices (e.g., higher layer parameters NZP-CSI-RS-ResourceId), the resource indication by the channel measurement parameter (e.g., higher layer parameters resourcesForChannelMeasurement) corresponding to a CSI reporting configuration, wherein the CSI-RS resource is transmitted from the first TRP.

For a second set of port indices of the second TRP, the port indices of up to K2 CSI-RS resources may be configured, and the port indices of each CSI-RS resource are arranged according to the order in which the associated CSI-RS resource indices (e.g., higher layer parameters NZP-CSI-RS-ResourceId) are configured in the linked CSI resource settings, linked to the CSI reporting configuration by the resource indication of the channel measurement parameters (e.g., higher layer parameters resourcesForChannelMeasurement), wherein the CSI-RS resources are transmitted from the second TRP.

In the port indexes of each CSI-RS resource, the port indexes of m ports are arranged in the order of rank m, that is, the port indexes of m ports are expressed as: Wherein the method comprises the steps of The CSI-RS port index of m ports at rank m is represented, and R e {1,2, …, RI _max }, and RI _max = min (8, P), where P is the port number in the CSI-RS resource.

Two higher layer parameters indicated by non-PMI ports:

If two higher-layer non-PMI port indication parameters (e.g., non-PMI-PortIndication) are configured and each parameter corresponds to CSI-RS resources that should be transmitted from separate TRPs, respectively, port indications of different CSI-RS resources from different TRPs may be freely configured.

Higher layer parameters for port index of eight ranks:

In an embodiment, the CSI reporting configuration includes non-PMI-PortIndication 1 and non-PMI-PortIndication 2.

If only one higher layer port index parameter for an eight rank parameter (e.g., portIndexFor-Ranks) is configured, the port index of the CSI-RS resource of the first TRP may be configured in a first non-PMI port indication parameter (e.g., non-PMI-PortIndication) and the port index of the CSI-RS resource of the second TRP may be configured in a second non-PMI port indication parameter (e.g., non-PMI-PortIndication). That is, the port index sequence of the CSI-RS resource from the first TRP may be configured in a first non-PMI port indication parameter (e.g., non-PMI-PortIndication), and the port index sequence of the CSI-RS resource from the second TRP may be configured in a second non-PMI port indication parameter (e.g., non-PMI-PortIndication). Because the port indexes of the CSI-RS resources from different TRPs with the same rank are the same, the port indexes of the CSI-RS resources from different TPRs can be flexibly configured, and RRC overhead is saved.

In an embodiment of the present invention, for non-PMI measurement and reporting in multiple TRP/panel scenarios, if the UE configures a CSI reporting configuration (e.g., higher layer parameter CSI-ReportConfig) and sets the reporting number (e.g., higher layer parameter reportquality) to "cri-RI-CQI", a second non-PMI port indication parameter (e.g., higher layer parameter non-PMI-PortIndication) may be added to the CSI reporting configuration (e.g., higher layer parameter CSI-ReportConfig). That is, the first non-PMI port indication parameter (e.g., non-PMI-PortIndication) and the second non-PMI port indication parameter (e.g., non-PMI-PortIndication) are included in the CSI reporting configuration (e.g., higher layer parameter CSI-ReportConfig). A first non-PMI port indication parameter (e.g., non-PMI-PortIndication) is used to indicate a port index of CSI-RS resources in a first TRP, and a second non-PMI port indication parameter (e.g., non-PMI-PortIndication) is used to indicate a port index of CSI-RS resources in a second TRP.

Specifically, a first non-PMI port indication parameter (e.g., non-PMI-PortIndication) determines a port index sequence of a first TRP, wherein the port index is selected from CSI-RS resources transmitted by the first TRP. In the port index sequence of CSI-RS resources of the first TRP, the port index of up to K1 CSI-RS resources may be configured, and the port index of each CSI-RS resource is configured according to the ordered arrangement of associated CSI-RS resource indices (e.g., higher layer parameters NZP-CSI-RS-ResourceId) that are associated to the CSI reporting configuration by the resource indication of the channel measurement parameters (e.g., higher layer parameters resourcesForChannelMeasurement), wherein the CSI-RS resources are transmitted from the first TRP. In the port index of each CSI-RS resource, the port indexes of the m ports are arranged in the layer order of m levels, that is, the port indexes of the m ports are expressed as: where is the m-level CSI-RS port index, and is the port number in the CSI-RS resource.

A second non-PMI port indication parameter (e.g., non-PMI-PortIndication) determines a port index sequence of a second TRP, wherein the port index is selected from CSI-RS resources transmitted by the second TRP. In the port index sequence of the CSI-RS resources of the second TRP, the port index of at most K2 CSI-RS resources may be configured, and the port index of each CSI-RS resource is configured according to the sequential arrangement of the associated CSI-RS resource indices (e.g., NZP-CSI-RS-ResourceId), in the linked CSI resource settings, the resource indication (e.g., resourcesForChannelMeasurement) by the channel measurement parameter is linked to the CSI reporting configuration, wherein the CSI-RS resource is transmitted from the second TRP. In the port indexes of each CSI-RS resource, the port indexes of m ports are arranged in the order of rank m, that is, the port indexes of m ports are expressed as: Wherein the method comprises the steps of The CSI-RS port index of m ports at rank m is represented, and R e {1,2, …, RI _max }, and RI _max = min (8, P), where P is the port number in the CSI-RS resource. Examples of the detailed sequence of the port index of the first TRP and the port index sequence of the second TRP are as follows:

table 5:

As shown in fig. 6, the port numbers of the first and second CSI-RS resources are 8, i.e., a variable of port index, where i=0, 1, …,7. For two CSI-RS resources, the port index for the same rank indication is the same. For example, for rank 4, the indication port index of the first CSI-RS resource and the second CSI-RS resource is p ₀,p₁,p₂,p₃.

Two higher layer parameters of port index for eight ranks:

In an embodiment, the CSI reporting configuration includes a combination of non-PMI-PortIndication1 and PortIndexFor8Ranks1 for the first TRP 1 and a combination of non-PMI-PortIndication2 and PortIndexFor8Ranks2 for the second TRP 2.

If two higher layer parameters of the port index of the 8rank parameter (e.g., portIndexFor8, 8 Ranks) are configured and each of the two higher layer parameters of the port index parameter of the 8rank corresponds to CSI-RS resources transmitted from separate TRPs, then the port index of the same rank of CSI-RS resources from different TRPs may be different. Therefore, the port indexes and CSI-RS resources of different TPRs can be flexibly configured, and dynamic changes of different links between the TRP and the UE can be adapted.

In an embodiment of the present invention, for non-PMI measurement and reporting in multiple TRP/panel scenarios, if the UE configures a CSI reporting configuration (e.g., higher layer parameter CSI-ReportConfig) and sets the reporting number (e.g., higher layer parameter reportquality) to "cri-RI-CQI", a second non-PMI port indication parameter (e.g., higher layer parameter non-PMI-PortIndication) and a second port index of an eight rank parameter (e.g., higher layer parameter PortIndexFor8 Ranks) may be added in the CSI reporting configuration (e.g., higher layer parameter CSI-ReportConfig). The first non-PMI port indication parameter (e.g., non-PMI-PortIndication) and a first port index of the eight rank parameter (e.g., portIndexFor, ranks) are used to indicate a sequence of port indices of CSI-RS resources from the first TRP. A second non-PMI port indication parameter (e.g., non-PMI-PortIndication) and a second port index of an eight rank parameter (e.g., portIndexFor, ranks) are used to indicate a sequence of port indices of CSI-RS resources from the second TRP.

Specifically, a first non-PMI port indication parameter (e.g., non-PMI-PortIndication) and a first port index (e.g., portIndexFor8 Ranks) of an eight rank parameter determine a port index sequence of a first TRP, the port index sequence including a plurality of port indices of the first TRP, and the plurality of port indices being selected from CSI-RS resources transmitted by the first TRP.

In the port index sequence of the first TRP, a port index of at most K1 CSI-RS resources may be configured, and the port index of each CSI-RS resource is configured in a linked CSI resource setting according to an ordered arrangement of associated CSI-RS resource indices (e.g., higher layer parameters NZP-CSI-RS-ResourceId), linked to a CSI reporting configuration by a resource indication of channel measurement parameters (e.g., higher layer parameters resourcesForChannelMeasurement), wherein the CSI-RS resources are transmitted from the first TRP. In the port indexes of each CSI-RS resource, the port indexes of m ports are arranged in the order of rank m, that is, the port indexes of m ports are expressed as: Wherein the method comprises the steps of The CSI-RS port index of m ports at rank m is represented, and R e {1,2, …, RI _max }, and RI _max = min (8,p), where P is the number of ports in the CSI-RS resource.

A second non-PMI port indication parameter (e.g., non-PMI-PortIndication) and a second port index (e.g., portIndexFor, ranks) of the eight rank parameter determine a port index sequence of a second TRP, the port index sequence including a plurality of port indices of the second TRP, and the plurality of port indices being selected from CSI-RS resources transmitted by the second TRP.

In the port index sequence of the second TRP, port indices of up to K2 CSI-RS resources may be configured, and the port indices of each CSI-RS resource are arranged according to an order of configuration of associated CSI-RS resource indices (e.g., NZP-CSI-RS-ResourceId) in linked CSI resource settings linked to CSI reporting configurations by resource indications (e.g., resourcesForChannelMeasurement) of channel measurement parameters, wherein CSI-RS resources are transmitted from the second TRP. In the port indexes of each CSI-RS resource, the port indexes of m ports are arranged in the order of rank m, that is, the port indexes of m ports are expressed as: Wherein the method comprises the steps of The CSI-RS port index of m ports at rank m is represented, and R e {1,2, …, RI _max }, and RI _max = min (8, P), where P is the port number in the CSI-RS resource.

Examples of the detailed sequence of the port index of the first TRP and the port index sequence of the second TRP are as follows:

table 6:

As shown in fig. 7, the port numbers of the first and second CSI-RS resources are 8, i.e., p _i, i=0, 1, …,7. The port index for the same rank indication may be different for two CSI-RS resources. For example, for rank 4, the index of the indication port of the first CSI-RS resource is p ₀,p₁,p₂,p₃, and for the second CSI-RS resource is p ₃,p₄,p₅,p₆.

Higher layer parameters lacking non-PMI port indication:

If the UE does not configure upper layer parameters (e.g., non-PMI-PortIndication) of the non-PMI port indication parameters, that is, the CSI reporting configuration (e.g., upper layer parameters CSI-ReportConfig) does not have non-PMI port indication parameters (e.g., non-PMI-PortIndication) of the UE, a default assumption of CSI-RS resource port index from two TRPs should be provided.

Based on the offset:

A default set of port indices may be provided for the first TRP and a plurality of offset values may be indicated to determine the port index for the second TRP. That is, a default set of port indices is provided for the first TRP as a port index sequence for the CSI-RS resources in the first TRP, and an offset set is provided for the second TRP and used by the UE to determine a port index sequence for the CSI-RS resources in the second TRP. Thus, the port index of the second TRP is configurable.

In an embodiment of the present invention, for non-PMI measurement and reporting in a multiple TRP/panel scenario, if the UE configures CSI reporting configuration (e.g., higher layer parameter CSI-ReportConfig) and sets the reporting number (e.g., higher layer parameter reportquality) to "cri-RI-CQI" and the non-PMI port indication parameter (e.g., non-PMI-PortIndication) is not configured, a set of default port indices may be provided for the first TRP and RI _max offset values may be used to indicate the order of port indices for CSI-RS resources to determine the second TRP, where the offset values are provided according to rank, the offset values may be predefined or signaled by Downlink Control Information (DCI), medium Access Control (MAC) control Component (CE) or Radio Resource Control (RRC), where RI _max = min (8, P), where P is the number of ports in the CSI-RS resources.

Specifically, for a CSI-RS resource of a first TRP, the CSI-RS resource at the first TRP is configured by a CSI resource setting associated to a CSI reporting configuration (e.g., CSI-ReportConfig), a default port index of rank m (i.e.) Is {0, …, m-1}, where rank m=1, 2, …, RI _max, and RI _max =min (8, P), P is the number of ports in the CSI-RS resource.

For the CSI-RS resources of the second TRP where the CSI-RS resources of the second TRP are configured by CSI resource settings associated with a CSI reporting configuration (e.g., CSI-ReportConfig), a default port index of rank m (i.e.) Is { (0+offset _(n-1))mod P,…,((n-1)+offset_(n-1)) mod P }, where rank n=1, 2, …, RI _max, and RI _max =min (8, P), P is the number of ports in the CSI-RS resource. In particular, if RI _max offset values are identical, this is equivalent to only a single offset value. More specifically, if the offset value is equal to 0, it means that the default port index of CSI-RS resources from two TRPs is the same for a certain rank.

Two sets of default port indexes:

If two sets of default port indices are provided, and each set corresponds to a separate TRP, the default port index may be provided more flexibly. For example, a first set of default port indices is provided as port index sequences for CSI-RS resources in a first TRP and a second set of default port indices is provided as port index sequences for CSI-RS resources in a second TRP.

In an embodiment of the present invention, for non-PMI measurement and reporting in a multiple TRP/panel scenario, if a UE configures CSI reporting configuration (e.g., higher layer parameter CSI-ReportConfig) and sets the reporting number (e.g., higher layer parameter reportquality) to "cri-RI-CQI" and the non-PMI port indication parameter (e.g., non-PMI-PortIndication) is not configured, two sets of default port indices are provided, each set corresponding to one individual TRP, wherein each set of default port indices is provided in rank.

For the CSI-RS resources of the second TRP where the CSI-RS resources of the second TRP are configured by CSI resource settings associated with a CSI reporting configuration (e.g., CSI-ReportConfig), a default port index of rank m (i.e.) Is { (n) mod P, …, (2·n-1) mod P }, where rank n=1, 2, …, RI _max, and RI _max =min (8, P), P is the number of ports in the CSI-RS resource.

As shown in fig. 8, the number of ports of the first CSI-RS resource and the second CSI-RS resource is 8, that is p_i,i＝0,1,…,7p₀,p₁,p₂,p₃p₄,p₅,p₆,p₇. for two CSI-RS resources, the default port index of the same rank may be different. For example, for rank 4, the default port index of the first CSI-RS resource is p ₀,p₁,p₂,p₃; and the default port index of the second CSI-RS resource is p ₄,p₅,p₆,p₇.

CSI measurement and reporting:

Since the gNB is unaware of the UE's interference, the rank selected by the gNB may not be the best rank if the gNB determines the rank directly from UL channel measurements. Therefore, the base station (e.g., gNB) should transmit the precoded CSI-RS resource to the UE, and the UE realizes better link adaptation according to the indication port index of the CSI-RS resource.

RI calculation and reporting:

RI calculation:

since different signal to interference noise ratio (SINR) levels correspond to an optimal rank for transmission, the UE should first determine the optimal transmission rank.

The port index sequence of the CSI-RS resource from the first TRP may be indicated as a port index of the CSI-RS resource from the first TRP, and the port index sequence of the CSI-RS resource from the second TRP may be indicated as a port index of the CSI-RS resource from the second TRP.

In an embodiment of the present invention, for non-PMI-based CSI measurement and reporting in a multiple TRP/panel scenario, if a UE configures a CSI reporting configuration (e.g., upper layer parameter CSI-ReportConfig) and sets the reporting number (e.g., upper layer parameter reportquality) to "cri-RI-CQI", the UE determines a rank to transmit from a first TRP according to an indication port index of CSI-RS resources from the first TRP and determines a rank to transmit from a second TRP according to an indication port index of CSI-RS resources from the second TRP. As in the previous embodiments, the indicated port indices of the first and second TRP are determined by the port indices of the corresponding non-PMI port indication parameter (e.g., non-PMI-PortIndication) and eight rank parameter (e.g., portIndexFor8 Ranks), respectively.

Regarding calculating the rank of the first TRP, for a particular rank m, the first m columns of the identity matrix are the indicated port indices of CSI-RS resources using the first TRP associated with rank m, where m=1, 2, …, RI _max, and RI _max =min (8, P), P being the number of ports in the CSI-RS resources. The UE determines a rank of the first TRP from all potential ranks according to a preset criterion (e.g., SINR criterion, SINR value, or SINR range).

Regarding calculating the rank of the second TRP, for a particular rank n, the first n columns of the identity matrix use an indicated port index for CSI-RS resources of the rank n associated second TRP, where n=1, 2, …, RI _max, and RI _max =min (8, P), P being the port number in the CSI-RS resources. The UE determines a rank of the second TRP from all potential ranks according to a preset criterion (e.g., SINR criterion, SINR value, or SINR range). The UE determines a rank of a plurality of TRPs associated with the first TRP and the second TRP as a sum of the determined rank of the first TRP and the determined rank of the second TRP.

The UE reports to the base station a determined rank of the multiple TRPs associated with the first TRP and the second TRP. Or the UE reports the determined rank of the first TRP and the determined rank of the second TRP to the base station.

As shown in fig. 9, the port numbers of the first and second CSI-RS resources are 4, i.e., p _i, i=0, 1, …,3. For the first CSI-RS resource, the indication port indexes of rank m=1, 2, …,4 are p₀;p₀,p₁;p₀,p₁,p₂;p₀,p₁,p₂,p₃; respectively and for the second CSI-RS resource, the indication port indexes of rank n=1, 2, …,4 are respectively p₁;p₂,p₃;p₁,p₂,p₃;p₀,p₁,p₂,p₃.

RI report:

(1) Direct reporting RI:

If a determined rank of two TRPs is reported directly enough to adequately reflect the channel state, the rank may enable better link adaptation.

In an embodiment of the present invention, for non-PMI-based CSI measurement and reporting in a multiple TRP/panel scenario, if a UE configures a CSI reporting configuration (e.g., higher layer parameter CSI-ReportConfig) and the reporting number (e.g., higher layer parameter reportquality) is set to "cri-RI-CQI", the UE directly reports a determined rank of a first TRP and a second TRP to a base station without any other restriction, wherein the rank transmitted from the first TRP is determined according to an indication port index of a CSI-RS resource of the first TRP and the rank transmitted from the second TRP is determined according to an indication port index of a CSI-RS resource of the second TRP. The transmission rank from the first TRP is referred to as the rank of the first TRP and the transmission rank from the second TRP is referred to as the rank of the second TRP. The UE reports to the base station a determined rank of the multiple TRPs associated with the first TRP and the second TRP. Or the UE reports the rank of the first TRP as the reporting rank of the first TRP and the rank of the second TRP as the reporting rank of the second TRP to the base station.

(2) Reporting restricted RI

To reduce RI feedback overhead, a subset of RI combinations may be reported. In the multi-TRP/panel scenario, when rank m=2, 3, …,8, the combination of the corresponding ranks of two TRPs may be (1+1), (1+2, 2+1), (2+2), (2+3), (3+3), (3+4), (4+4), respectively. This means that the reported RI of two TRPs should be one of the listed rank combinations. Thus, each reported RI should be one of the elements of rank combination. Table 7 shows rank m values for a plurality of TRPs and a correlation rank combination for two TRPs, where rank m = 2,3, …, or 8.

Table 7:

rank m	Correlation rank combining of two TRPs
		Rank 2	(1+1)
Rank 3	(1+2),(2+1)
		Rank 4	(2+2),
Rank 5	(2+3),(3+2)
		Rank 6	(3+3),
Rank 7	(3+4),(4+3)
		Rank 8	(4+4)

In a correlation rank combination of rank m of multiple TRPs, a first element in the correlation rank combination represents a determined rank of a first TRP, and a second element in the correlation rank combination represents a determined rank of a second TRP.

The matching correlation rank combination of the determined ranks of the multiple TRPs is equivalent to the combination of the determined rank of the first TRP plus the determined rank of the second TRP. That is, the first element (i.e., the first operand) is equal to the determined rank of the first TRP in the matched correlation rank combination, and the second element (i.e., the second operand) is equal to the determined rank of the second TRP in the matched correlation rank combination. The corresponding element rank m of the determined rank of the multi-TRP is a value of rank m associated with a matching correlation rank combination of the determined rank of the multi-TRP and the RI value of the determined rank of the multi-TRP is equal to m.

In an embodiment of the present invention, for non-PMI-based CSI measurement and reporting in a multiple TRP/panel scenario, if the UE is configured with a CSI reporting configuration (e.g., higher layer parameter CSI-reporting configuration) replaced with a reporting number (e.g., higher layer parameter reporting number) set to "cri-RI-CQI", if the determined rank of the multiple TRPs associated with the first TRP and the second TRP is greater than the corresponding element of the associated rank combination, the reported RI is the corresponding element representing the associated rank combination; if the determined rank of the plurality of TRPs is less than the corresponding element of the rank combination, the determined rank of the plurality of TRPs will be discarded. That is, when the determined rank of the multi-TRP has only one corresponding element, the UE reports the corresponding element as a reporting rank of the multi-TRP. When the determined rank of the plurality of TRPs has a plurality of corresponding elements, the UE reports a smallest corresponding element among the plurality of corresponding elements as a reporting rank of the plurality of TRPs. When the determined rank of the multi-TRP does not have a corresponding element, the UE will discard the determined rank of the multi-TRP. For example, referring to table 8, the determined rank 4 of the determined multi-TRP is obtained from the sum of the determined RI 1 of the first TRP and the determined RI 3 of the second TRP. The determined rank 4 of the plurality of TRPs has a corresponding element rank 47 in the table, but is discarded because the determined rank 4 of the plurality of TRPs has no matching correlation rank combination of the corresponding elements. Rank 4 has no associated rank combination (1+3) in table 7.

Accordingly, depending on the determined RI, the corresponding reporting RI may be as shown in table 1.

Table 8: RI mapping for determined RI and reporting

As shown in Table 8, if the determined RI of the first TRP is 1 and the determined RI of the second TRP is 2/3/4, then the RI reported by both TRPs is (1+2). If the determined RI of the first and second TRPs is 3 and 1, respectively, the determined RI is discarded.

CQI calculation:

Since CQI is calculated according to a reporting rank and a port index corresponding to the reporting rank, it is necessary to design CQI calculation methods in a multi-TRP/panel scenario to obtain better output performance.

In an embodiment of the present invention, for non-PMI measurement and reporting in a multiple TRP/panel scenario, if a UE configures a CSI reporting configuration (e.g., higher layer parameter CSI-ReportConfig) and sets the number of reports (e.g., higher layer parameter reportquality) to "cri-RI-CQI", the UE uses a port index of CSI-RS resources indicated in a first TRP associated with a reporting rank of the first TRP in calculating the CQI of the first TRP reporting rank; in calculating the CQI for the second TRP reporting rank, the UE uses an indicated port index of CSI-RS resources in the second TRP associated with the second TRP reporting rank.

For precoder V ₁ of the first TRP and reporting rank m of the first TRP, the first m columns of the identity matrix will use the indicated port index of CSI-RS resources in the first TRP associated with rank m. The UE estimates a channel between the first TRP and the UE based on the CSI-RS resource of the first TRP and obtains a channel estimation matrix H ₁ representing the channel between the first TRP and the UE.

For precoder V ₂ of the second TRP and report n of the second TRP, the first n columns of the identity matrix are applied to the indicated port index of CSI-RS resources of the second TRP associated with rank n. The UE estimates a channel between the second TRP and the UE based on CSI-RS resources from the second TRP and obtains a channel estimation matrix H ₂ representing the channel between the second TRP and the UE.

Based on the analysis, the precoder of the first TRP is V ₁ and the estimated channel between the first TRP and the UE is H ₁; and the precoder of the second TRP is V ₂ and the estimated channel between the first TRP and the UE is H ₂. The UE calculates CQI based on the two precoders V ₁ and V ₂, and the channel estimation matrix H ₁ and the channel estimation matrix H ₂.

As shown in fig. 9, the port numbers of the first and second CSI-RS resources are 4, i.e., p _i, i=0, 1, …,3. If the rank of two TRPs is 2, in calculating CQI, an indication port index p ₀,p₁ of rank 2 is used for the first CSI-RS resource; and an indication port index p ₂,p₃ of rank 2 is used for the second CSI-RS resource.

CSI sharing between single and multiple TRP measurement hypotheses:

UCI payload may be reduced if CSI (e.g., RI and CQI) is shared between a single TRP and multiple TRP measurement hypotheses. Since CSI-RS resources of a CSI measurement technique that is not based on PMI are precoded, if CSI-RS resources from a single TRP are not precoded and CSI-RS resources from multiple TRPs are precoded, it is not appropriate to share CSI between the single TRP and multiple TRP measurement hypotheses. Therefore, it is important to design CSI sharing mechanisms.

RI sharing:

Without limitation:

The UE may operate with a single TRP transmission and multiple TRP transmissions simultaneously. For single TRP and multiple TRP measurement hypotheses with non-PMI-based CSI measurement and reporting, RI sharing would be more flexible if no restrictions were placed on RI sharing between the application of the single TRP and multiple TRP measurement hypotheses.

In an embodiment of the present invention, for CSI reporting related to a single TRP and multiple TRP measurement hypotheses, if the UE is configured with a CSI reporting configuration (e.g., higher layer parameter CSI-ReportConfig) and the number of reports (e.g., higher layer parameter reportquality) is set to "cri-RI-CQI", and if non-PMI-based CSI measurement and reporting is applied to the single TRP and multiple TRP/panel measurement hypotheses, RI sharing between the single TRP and multiple TRP measurement hypotheses is enabled. For example, if the UE reports only RI of multiple TRP measurement hypotheses, but not RI of a single TRP measurement hypothesis, the UE may apply the reported RI to a single TRP transmission.

CSI-RS resources with the same port number and port index number:

Since the rank is calculated from the port number and port index of CSI-RS resources that are not PMI-based CSI measurement and reporting, if the port and port index number of CSI-RS resources for single TRP measurement is the same as the port and port index number of CSI-RS resources for multiple TRP measurement, this means that the CSI-RS resource configuration for single TRP and multiple TRP measurement is the same. In case of the same CSI-RS resource configuration, it is reasonable to share RI between a single TRP and multiple TRP measurement hypotheses.

In an embodiment of the present invention, for CSI reporting related to a single TRP and multiple TRP measurement hypotheses, if a UE configures CSI reporting configuration (e.g., higher layer parameter CSI-ReportConfig) and sets the number of reports (e.g., higher layer parameter reportquality) to "cri-RI-CQI", and if non-PMI-based CSI measurement and reporting are applied to a single TRP and multiple TRP/panel measurement hypotheses, RI sharing between the single TRP and multiple TRP measurement hypotheses is enabled if multiple ports and port indexes of CSI-RS resources for the single TRP measurement are the same as multiple ports and port indexes of CSI-RS resources for the multiple TRP measurement. As in the previous embodiments, the port index of the CSI-RS resource may be indicated by a non-PMI port indication parameter (e.g., a higher layer parameter non-PMI-PortIndication). For example, if the UE reports only RI of multiple TRP measurement hypotheses, but not RI of a single TRP measurement hypothesis, the UE may apply the reported RI to a single TRP transmission.

Identical RI:

If the RI measured by a single TRP and multiple TRPs is the same, it is reasonable to share the RI between the single TRP and multiple TRP measurement hypotheses.

In an embodiment of the present invention, for CSI reporting related to a single TRP and multiple TRP measurement hypotheses, if a UE configures CSI reporting configuration (e.g., higher layer parameter CSI-ReportConfig) and sets the number of reports (e.g., higher layer parameter reportquality) to "cri-RI-CQI", and if non-PMI-based CSI measurement and reporting are applied to a single TRP and multiple TRP/panel measurement hypotheses, RI sharing may be enabled between the single TRP and multiple TRP measurement hypotheses if the Rank Indicator (RI) of the single TRP and the RI of the multiple TRP measurement are the same. For example, if the UE reports only RI of multiple TRP measurement hypotheses, but not RI of a single TRP measurement hypothesis, the UE may apply the reported RI to a single TRP transmission.

CQI sharing:

Since CQI is calculated from the port number and port index of CSI-RS resources for non-PMI-based CSI measurement and reporting, if the port and port index number of CSI-RS resources for single TRP measurement is the same as the port and port index number of CSI-RS resources for multiple TRP measurement, this means that the CSI-RS resource configuration for single TRP and multiple TRP measurement is the same. In case of the same CSI-RS resource configuration, it is fair to share CQI between a single TRP and multiple TRP measurement hypotheses.

In an embodiment of the present invention, for CSI reporting related to a single TRP and multiple TRP measurement hypotheses, if a UE configures a CSI reporting configuration (e.g., higher layer parameter CSI-ReportConfig) and sets the reporting number (e.g., higher layer parameter reportquality) to "cri-RI-CQI", and if non-PMI-based CSI measurement and reporting are applied to a single TRP and multiple TRP/panel measurement hypotheses, CQI sharing between the single TRP and multiple TRP measurement hypotheses may be enabled if multiple ports and port indexes of CSI-RS resources for the single TRP measurement are the same as those for the multiple TRP measurement hypotheses, wherein the port index of the CSI-RS resources is indicated by a non-PMI port indication parameter (e.g., higher layer parameter non-PMI-PortIndication). If the UE reports only CQI of multiple TRP measurement hypotheses, but not CQI of a single TRP measurement hypothesis, the UE may apply the reported CQI to a single TRP transmission.

Fig. 10 is a block diagram of an example system 700 for wireless communication in accordance with an embodiment of the present invention. The embodiments described herein may be implemented into a system using any suitable configuration of hardware and/or software. Fig. 10 illustrates a system 700 including Radio Frequency (RF) circuitry 710, baseband circuitry 720, processing unit 730, memory/storage 740, display 750, camera 760, sensor 770, and input/output (I/O) interface 780 coupled to one another as shown.

The processing unit 730 may include circuitry such as, but not limited to, one or more single-core or multi-core processors. Processors may include any combination of general-purpose processors and special-purpose processors, such as graphics processors and application processors. The processor may be coupled to the memory/storage and configured to execute instructions stored in the memory/storage to support various applications and/or operating systems running on the system.

Radio control functions may include, but are not limited to, signal modulation, encoding, decoding, radio frequency shifting, and the like. In some embodiments, baseband circuitry may provide communications compatible with one or more radio technologies. For example, in some embodiments, the baseband circuitry may support communication with 5G NR, LTE, evolved Universal Terrestrial Radio Access Network (EUTRAN), and/or other Wireless Metropolitan Area Networks (WMANs), wireless Local Area Networks (WLANs), wireless Personal Area Networks (WPANs). An embodiment in which the baseband circuitry is configured to support radio communications for multiple wireless protocols may be referred to as a multimode baseband circuitry. In various embodiments, baseband circuitry 720 may include circuitry to operate with signals that are not strictly considered to be at baseband frequency. For example, in some embodiments, the baseband circuitry may include circuitry that operates with signals having intermediate frequencies between baseband and radio frequencies.

In various embodiments, system 700 may be a mobile computing device such as, but not limited to, a notebook computing device, a tablet computing device, a netbook, an ultrabook, a smartphone, and the like. In various embodiments, the system may have more or less components, and/or different architectures. The methods described herein may be implemented as computer programs, where appropriate. The computer program may be stored on a storage medium, such as a non-transitory storage medium.

Embodiments of the present invention are a combination of techniques/procedures that may be employed in the 3GPP specifications to create the end product.

If the software functional unit is implemented and used and sold as a product, it can be stored in a readable storage medium of a computer. Based on this understanding, the technical solution proposed by the present invention may be implemented basically or partly as a software product. Or a portion of a technical program that facilitates conventional techniques may be implemented as a software product. The software product is stored in a storage medium in a computer, including a plurality of commands for a computing device (e.g., a personal computer, a server, or a network device) to execute all or part of the steps disclosed by embodiments of the present invention. The storage medium includes a USB disk, a removable hard disk, a Read Only Memory (ROM), a Random Access Memory (RAM), a floppy disk, or other medium capable of storing program code.

In the present invention, several solutions are presented to apply CSI measurement and reporting of non-PMI in multiple TRP/panel NCJT measurement hypotheses, including port index assignment, CSI measurement and reporting, CSI sharing between a single TRP and multiple TRP measurement hypotheses. First, regarding port index allocation, the embodiment of the invention discloses a method for indicating port indication according to a non-PMI port indication parameter. Second, with respect to metering and reporting of CSI, RI and CQI are calculated from a specified port index. Then, for CSI sharing between a single TRP and multiple TRP measurements, a method of RI sharing and CQI sharing is provided to reduce UCI overhead. In view of these approaches, support for CSI measurement and reporting of non-PMIs is greatly enhanced among multiple TRP/panel NCJT measurement hypotheses.

While the invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not to be limited to the disclosed embodiment, but is intended to cover various arrangements included within the scope of the appended claims without departing from the broadest interpretation of the claims.

Claims

1. A channel state information, CSI, measurement method, executable in a user equipment, UE, the method comprising:

2. The method of claim 1, wherein in the CSI reporting configuration, only one higher layer parameter of a non-PMI port indication parameter for the CSI measurement is configured, the port index of the CSI-RS resource of the first TRP is configured in a non-PMI port indication parameter, and a set of offset values is indicated to determine the port index of the CSI-RS resource of the second TRP.

3. The method of claim 2, wherein if the UE is configured with the CSI reporting configuration with reporting number set to "cri-RI-CQI", the port index sequence of the CSI-RS resource from the first TRP is configured in a non-PMI port indication parameter, and the port index sequence of the CSI-RS resource from the second TRP is determined based on the port index sequence of the first TRP and RI _max offset values provided by rank.

4. A method according to claim 3, characterized in that the offset value is predefined or signaled by DCI, MAC CE or RRC.

5. A method according to claim 3, characterized in that RI _max = min (8, P), and P is the number of ports in the CSI-RS resource.

6. The method of claim 3, wherein the port index of the CSI-RS resources transmitted by the first TRP is configured and the port index of each of the CSI-RS resources is configured according to a sequential arrangement of CSI-RS resource indices associated with one of the CSI resource settings linked to the CSI report configuration, the CSI resource settings indicated by the resources of the channel measurement parameters.

7. The method of claim 6, wherein among the port indices of each of the CSI-RS resources, port indices of m ports are represented in a hierarchical ordered arrangement of rank m, the port indices of m ports are represented in the CSI reporting configuration as: Wherein the method comprises the steps of Is the CSI-RS port index of the m ports of rank m, and R e {1,2, …, RI _max},RI_max = min (8, P), P is the port number in the CSI-RS resource.

8. The method of claim 7, wherein for the CSI-RS resources in the second TRP configured in the CSI resource settings linked with the CSI report configuration, the port index of rank mIs that Where offset _(m-1) is an offset value associated with rank m, rank m=1, 2, …, RI _max,RI_max =min (8, P), P being the port number in the CSI-RS resource.

9. The method according to claim 1, wherein in the CSI reporting configuration, only one higher layer parameter of non-PMI port indication parameters is configured, i.e. the port index of the CSI-RS resource from the first TRP and the port index of the CSI-RS resource from the second TRP are both configured in the same non-PMI port indication parameter.

10. The method of claim 9, wherein the port indices of the same rank for the CSI-RS resources from different TRPs are the same.

11. The method of claim 9, wherein if the UE is configured with the CSI reporting configuration with a reporting number set to "cri-RI-CQI", the port index sequences corresponding to at least 2 CSI-RS resources are configured in the non-PMI port indication parameter, and the port index sequences of the CSI-RS resources from the first TRP and the port index sequences of the CSI-RS resources from the second TRP are both configured in the non-PMI port indication parameter.

12. The method of claim 11, wherein among the port indexes of each CSI-RS resource, port indexes of m ports are represented in a hierarchical ordered arrangement of rank m, the port indexes of m ports are represented as: Wherein the method comprises the steps of Is the CSI-RS port index of the m ports of rank m, and R e {1,2, …, RI _max},RI_max = min (8, P) P, P being the port number in the CSI-RS resource.

13. The method of claim 11, wherein the non-PMI port indication parameter determines a port index combination sequence, the port index combination sequence divided into two groups including a first group of port indexes including the port index sequence of the CSI-RS resource from the first TRP and a second group of port indexes including the port index sequence of the CSI-RS resource from the second TRP.

14. The method of claim 13, wherein for the first set of port indices of the first TRP, configuring port indices of up to K1 CSI-RS resources, the port index of each of the CSI-RS resources being configured according to a sequential arrangement of CSI-RS resource indices associated with one of the CSI resource settings linked to the CSI reporting configuration, the CSI resource settings indicated by resources of channel measurement parameters, wherein the CSI-RS resources are transmitted from the first TRP; and

For the second set of port indices of the second TRP, configuring a port index of at most K2 CSI-RS resources, the port index of each of the CSI-RS resources being configured according to a sequential arrangement of associated CSI-RS resource indices in a CSI resource setting linked to the CSI report configuration, the CSI resource setting being indicated by a resource of a channel measurement parameter, wherein the CSI-RS resource is transmitted from the second TRP.

15. The method of claim 14, wherein among the port indices of each of the CSI-RS resources, port indices of m ports are represented in a hierarchical ordered arrangement of rank m, the port indices of m ports are represented in the CSI reporting configuration as: Wherein the method comprises the steps of Is the CSI-RS port index of rank m, and R e {1,2, …, RI _max},RI_max = min (8, P), P is the port number in the CSI-RS resource.

16. The method of claim 1, wherein the port index sequence of the CSI-RS resource from a first TRP is configured in a first non-PMI port indication parameter and the port index sequence of the CSI-RS resource from a second TRP is configured in a second non-PMI port indication parameter.

17. The method of claim 16, wherein the port indices of the same rank for the CSI-RS resources from different TRPs are the same.

18. The method of claim 16, wherein the first non-PMI port indication parameter and the second non-PMI port indication parameter are included in a CSI reporting configuration if the UE is configured with the CSI reporting configuration with a reporting number set to "cri-RI-CQI".

19. The method of claim 18, wherein in the port index sequence of the CSI-RS resources from the first TRP, port indices of up to K1 CSI-RS resources are configured and the port indices of each of the CSI-RS resources are configured according to an ordered arrangement of CSI-RS resource indices associated with one of CSI resource settings linked to the CSI report configuration, the CSI resource settings being indicated by a resource of a channel measurement parameter, wherein the CSI-RS resources originate from the first TRP transmission and among the port indices of each of the CSI-RS resources, port indices of m ports are represented in a rank-m hierarchical ordered arrangement, the port indices of m ports being represented as: Wherein the method comprises the steps of Is the CSI-RS port index of rank m, and R e {1,2, …, RI _max},RI_max = min (8, P), P is the port number in the CSI-RS resource; and

Configuring port indexes of at most K2 CSI-RS resources in the port index sequence of the CSI-RS resources from the second TRP, the port indexes of each CSI-RS resource being configured according to a sequential arrangement of CSI-RS resource indexes associated with one of CSI resource settings linked to the CSI report configuration, the CSI resource settings being indicated by resources of channel measurement parameters, wherein the CSI-RS resources originate from the second TRP transmission, and among the port indexes of each CSI-RS resource, port indexes of m ports are represented in a hierarchical ordered arrangement of rank m, the port indexes of m ports being represented as: Wherein the method comprises the steps of Is the CSI-RS port index of rank m, and R e {1,2, …, RI _max},RI_max = min (8, P), P is the port number in the CSI-RS resource.

20. The method of claim 1, wherein a first non-PMI port indication parameter and a first port index eight rank parameter are used to indicate the port index sequence of the CSI-RS resource from the first TRP, and a second non-PMI port indication parameter and a second port index eight rank parameter are used to indicate the port index sequence of the CSI-RS resource from the second TRP.

21. The method of claim 20, wherein the second non-PMI port indication parameter and a second port index eight rank parameter are included in the CSI reporting configuration if the UE is configured with the CSI reporting configuration with a reporting number set to "cri-RI-CQI".

22. The method of claim 21, wherein in the port index sequence of the first TRP, a port index of at most K1 CSI-RS resources is configured, the port index of each of the CSI-RS resources being configured according to a sequential arrangement of CSI-RS resource indices associated with one of the CSI resource settings linked to the CSI report configuration, the CSI resource settings being indicated by resources of channel measurement parameters, wherein the CSI-RS resources originate from the first TRP transmission, and in the port index of each of the CSI-RS resources, the port indices of m ports are represented in a rank-m hierarchical ordered arrangement, the port indices of m ports being represented in the CSI report configuration as: Wherein the method comprises the steps of Is the CSI-RS port index of rank m, and R e {1,2, …, RI _max},RI_max = min (8, P), P is the port number in the CSI-RS resource; and

Configuring port indexes of at most K2 CSI-RS resources in the port index sequence of the second TRP, the port indexes of each CSI-RS resource being configured according to a sequential arrangement of CSI-RS resource indexes associated with one of CSI resource settings linked with the CSI report configuration, the CSI resource settings being indicated by resources of channel measurement parameters, wherein the CSI-RS resources originate from the second TRP transmission, and among the port indexes of each CSI-RS resource, port indexes of m ports are represented in a hierarchical ordered arrangement of rank m, the port indexes of m ports being represented in the CSI report configuration as: Wherein the method comprises the steps of Is the CSI-RS port index of rank m, and R e {1,2, …, RI _max},RI_max = min (8, P), P is the port number in the CSI-RS resource.

23. The method of claim 1 wherein a set of preset port indices are provided for the first TRP as the port index sequence for the CSI-RS resource from the first TRP and a set of offset values are provided for the second TRP and utilized to determine the port index sequence for the CSI-RS resource from the second TRP.

24. The method of claim 23 wherein if the UE configures the CSI reporting configuration with reporting number set to "cri-RI-CQI" and the higher layer parameters of the non-PMI port indication parameter are not configured, providing the first TRP with the set of preset port indices and indicating RI _max offset values to determine the port index sequence for the CSI-RS resource from the second TRP, wherein the offset values are provided by rank.

25. The method of claim 24, wherein the offset value is predefined or signaled via DCI, MAC CE or RRC.

26. The method of claim 24, wherein a preset port index of rank m for the CSI-RS resources of the first TRP configured in CSI resource settings linked with the CSI reporting configurationIs {0, …, m-1}, where rank m=1, 2, …, RI _max,RI_max =min (8, P), where P is the number of ports in the CSI-RS resource.

27. The method of claim 24, wherein a port index of rank n for the CSI-RS resources of the second TRP configured in the CSI resource settings linked to CSI reporting configurationFor { (0+offset _(n-1))modP,…,(((n-1)+offset_(n-1)) modP }, where rank n=1, 2, …, RI _max, and RI _max =min (8, P), P is the number of ports in CSI-RS resources.

28. The method of claim 1, wherein if the UE configuration report number is set to CSI report configuration of "cri-RI-CQI" and the higher layer parameter of non-PMI port indication parameter is not configured, providing a first set of preset port indices for the first TRP as the port index sequence of the CSI-RS resource from the first TRP, providing a second set of preset port indices for the second TRP as the port index sequence of the CSI-RS resource from the second TRP, and each set of preset port indices is provided by rank.

29. The method of claim 28, wherein for the CSI-RS resources from the first TRP configured in CSI resource settings linked with the CSI reporting configuration, a preset port index of rank mIs {0, …, m-1}, where rank m = 1,2, …, RI _max,RI_max = min (8, P), and P is the number of ports in the CSI-RS resource.

30. The method of claim 28, wherein for the CSI-RS resources from the second TRP configured in a CSI resource setting linked with the CSI reporting configuration, a preset port index of rank n isWhere rank n=1, 2, …, RI _max,RI_max =min (8, P), and P is the number of ports in the CSI-RS resource.

31. The method of claim 1, wherein the port index sequence of the CSI-RS resource from the first TRP comprises an indicated port index of the CSI-RS resource from the first TRP, and the port index sequence of the CSI-RS resource from the second TRP comprises an indicated port index of the CSI-RS resource from the second TRP; if the UE is configured with the CSI reporting configuration with reporting number set to 'cri-RI-CQI', the UE determines a transmission rank from the first TRP according to the indication port index of the CSI-RS resource from the first TRP, and determines a transmission rank from the second TRP according to the indication port index of the CSI-RS resource from the second TRP, the transmission rank from the first TRP being referred to as a rank of the first TRP, and the transmission rank from the second TRP being referred to as a rank of the second TRP.

32. The method of claim 31 wherein for calculation of the rank of the first TRP, for a specified rank m, a first m column of an identity matrix is applied to the indicated port index of the CSI-RS resource from the first TRP associated with rank m, and rank m = 1,2, …, RI _max,RI_max = min (8, P), P being the number of ports in the CSI-RS resource, and the UE determines the rank from all possible ranks according to a dedicated criterion; for calculation of the rank of the second TRP, for a specified rank n, applying the first n columns of an identity matrix to the indicated port index of the CSI-RS resource from the second TRP associated with rank n, and rank n=1, 2, …, RI _max,RI_max =min (8, P), P being the number of ports in the CSI-RS resource, and the UE determining the rank from all possible ranks according to a dedicated criterion; and

The UE determines a rank of multiple TRPs associated with the first TRP and the second TRP as a sum of a determined rank of the first TRP and a determined rank of the second TRP.

33. The method of claim 31 wherein the UE directly reports the determined rank of the first TRP and the second TRP to a base station.

34. The method of claim 31 wherein a first element in a plurality of correlation rank combinations of rank m of multiple TRPs represents a determined rank of the first TRP and a second element in the correlation rank combinations represents a determined rank of the second TRP;

the match-related rank combination of the multi-TRP determined rank is the same one as the combination of the determined rank of the first TRP plus the determined rank of the second TRP, the corresponding element rank m of the determined rank of the multi-TRP is a value of rank m associated with the match-related rank combination of the determined rank of the multi-TRP, and the determined rank of the multi-TRP has a Rank Indicator (RI) value equal to m;

When the determined rank of the multi-TRP has only one corresponding element, the UE reports the corresponding element as the reporting rank of the multi-TRP;

When the determined rank of the multi-TRP has a plurality of corresponding elements, the UE reports the smallest corresponding element among the plurality of corresponding elements as the reporting rank of the multi-TRP; and

When the determined rank of the multi-TRP does not have a corresponding element, the UE discards the determined rank of the multi-TRP.

35. The method of claim 31, wherein the UE uses the indicated port index of the CSI-RS resource from the first TRP associated with the reporting rank of the first TRP when calculating the CQI of the reporting rank of the first TRP; and

When calculating a CQI of a reporting rank of the second TRP, the UE uses the indicated port index of the CSI-RS resource from the second TRP associated with the reporting rank of the second TRP.

36. The method of claim 35 wherein for precoder V1 of the first TRP, for reporting rank m of the first TRP, applying a first m column of an identity matrix to the indicated port index of the CSI-RS resources from the first TRP associated with rank m, the UE estimating a channel between the first TRP and the UE based on the CSI-RS resources from the first TRP and obtaining a channel estimation matrix H1 representative of the channel between the first TRP and the UE;

For precoder V2 of the second TRP, for reporting rank n of the second TRP, applying a first n column of an identity matrix to the indicated port index of the CSI-RS resource from the second TRP associated with rank n, the UE estimating a channel between the second TRP and the UE based on the CSI-RS resource from the second TRP, and obtaining a channel estimation matrix H2 representative of the channel between the second TRP and the UE; and

The UE calculates the CQI of the reporting rank of the first TRP based on the precoder V1 and the channel estimation matrix H1, and calculates the CQI of the reporting rank of the second TRP based on the precoder V2 and the channel estimation matrix H2.

37. The method of claim 1, wherein for CSI reporting associated with single TRP and multi TRP measurement hypotheses, RI sharing is enabled between single TRP and multi TRP measurement hypotheses if the UE is configured with the CSI reporting configuration with a reporting number set to "cri-RI-CQI" and if non-PMI based CSI measurements and reporting are applied in single TRP and multi TRP/panel measurement hypotheses.

38. The method of claim 1, wherein for CSI reporting associated with single TRP and multi TRP measurement hypotheses, if the UE configures the CSI reporting configuration with a reporting number set to "cri-RI-CQI" and if non-PMI based CSI measurement and reporting are applied in single TRP and multi TRP/panel measurement hypotheses, and if a port number and port index of CSI-RS resources for single TRP measurement is the same as a port number and port index of CSI-RS resources for multi TRP measurement, RI sharing is enabled between single TRP and multi TRP measurement hypotheses.

39. The method of claim 1, wherein for CSI reporting associated with single TRP and multi TRP measurement hypotheses, RI sharing is enabled between single TRP and multi TRP measurement hypotheses if the UE configures the CSI reporting configuration with a reporting number set to "cri-RI-CQI" and if non-PMI based CSI measurement and reporting is applied in single TRP and multi TRP/panel measurement hypotheses and if a rank indication RI for single TRP is the same as RI for multi TRP measurement.

40. The method of claim 1, wherein for CSI reporting associated with single TRP and multi TRP measurement hypotheses, CQI sharing is enabled between single TRP and multi TRP measurement hypotheses if the UE configures a CSI reporting configuration with a reporting number set to "cri-RI-CQI" and if non-PMI based CSI measurement and reporting is applied in the single TRP and multi TRP/panel measurement hypotheses and if the port number and port index of CSI-RS resources for the single TRP measurement are the same as the port number and port index of CSI-RS resources for the multi TRP measurement.

41. A User Equipment (UE), comprising:

a processor configured to invoke and run a computer program stored in a memory to cause a chip-mounted device to perform the method of any of claims 1 to 40.

42. A chip, comprising:

A processor configured to invoke and run a computer program stored in a memory, causing a chip-mounted device to perform the method of any of claims 1 to 40.

43. A computer readable storage medium storing a computer program, wherein the computer program causes a computer to perform the method of any one of claims 1 to 40.

44. A computer program product comprising a computer program, wherein the computer program causes a computer to perform the method of any one of claims 1 to 40.

45. A computer program, wherein the computer program causes a computer to perform the method of any one of claims 1 to 40.

46. A Channel State Information (CSI) measurement method, executable in a base station, the method comprising:

Transmitting a CSI reporting configuration to a User Equipment (UE) over a downlink, wherein the CSI reporting configuration includes a port index sequence of CSI-RS resources from a first TRP, the port index sequence being located in a port index of the first TRP, the port index sequence of CSI-RS resources of the first TRP being configured, the CSI reporting configuration includes a port index sequence of CSI-RS resources from a second TRP, the port index sequence being located in a port index of the second TRP, and the port index sequence of the CSI-RS resources of the second TRP being configured; and

A CSI measurement of the first TRP based on the port index of the first TRP and a CSI measurement of the second TRP based on the port index of the second TRP are received.

47. The method of claim 46, wherein in the CSI reporting configuration, only one higher layer parameter of a non-PMI port indication parameter for the CSI measurement is configured in the CSI reporting configuration, the port index of the CSI-RS resource of the first TRP is configured in the non-PMI port indication parameter, and a set of offset values are indicated to determine the port index of the CSI-RS resource of the second TRP.

48. The method of claim 47, wherein if the UE is configured with the CSI reporting configuration with reporting number set to "cri-RI-CQI", the port index sequence of the CSI-RS resource from the first TRP is configured in a non-PMI port indication parameter, and the port index sequence of the CSI-RS resource from the second TRP is determined based on the port index sequence of the first TRP and RI _max offset values, the offset values being provided by rank.

49. The method of claim 48, wherein the offset value is predefined or signaled via DCI, MAC CE, or RRC.

50. The method of claim 48, wherein RI _max = min (8, P), and P is the number of ports in the CSI-RS resource.

51. The method of claim 48, wherein the port index of the CSI-RS resources transmitted by the first TRP is configured and the port index of each of the CSI-RS resources is configured according to a sequential arrangement of CSI-RS resource indices associated with one of the CSI resource settings linked to the CSI report configuration, the CSI resource settings indicated by the resources of the channel measurement parameters.

52. The method of claim 51, wherein among the port indices of each of the CSI-RS resources, port indices of m ports are represented in a hierarchical ordered arrangement of rank m, the port indices of m ports are represented in the CSI reporting configuration as: Wherein the method comprises the steps of Is the CSI-RS port index of the m ports of rank m, and R e {1,2, …, RI _max},RI_max = min (8, P), P is the port number in the CSI-RS resource.

53. The method of claim 52, wherein for the CSI-RS resources in the second TRP configured in the CSI resource settings linked with the CSI reporting configuration, the port index of rank mIs that Where offset _(m-1) is an offset value associated with rank m, rank m=1, 2, …, RI _max,RI_max =min (8, P), and P is the port number in the CSI-RS resource.

54. The method of claim 46, wherein in the CSI reporting configuration, only one higher layer parameter of non-PMI port indication parameters is configured, namely the port index of the CSI-RS resource from the first TRP and the port index of the CSI-RS resource from the second TRP are both configured in the same non-PMI port indication parameter.

55. The method of claim 54, wherein the port indices of the same rank for the CSI-RS resources from different TRPs are the same.

56. The method of claim 54, wherein if the UE is configured with the CSI reporting configuration with reporting number set to "cri-RI-CQI", the port index sequences corresponding to at least 2 CSI-RS resources are configured in the non-PMI port indication parameter, and the port index sequences of the CSI-RS resources from the first TRP and the port index sequences of the CSI-RS resources from the second TRP are both configured in the non-PMI port indication parameter.

57. The method of claim 56, wherein among the port indices of each of the CSI-RS resources, port indices of m ports are represented in a hierarchical ordered arrangement of rank m, the port indices of m ports being represented as: Wherein the method comprises the steps of Is the CSI-RS port index of the m ports of rank m, and R e {1,2, …, RI _max},RI_max = min (8, P) P, P being the port number in the CSI-RS resource.

58. The method of claim 56 wherein said non-PMI port indication parameter determines a port index combination sequence, said port index combination sequence divided into two groups including a first group of port indexes including said port index sequence of said CSI-RS resources from said first TRP and a second group of port indexes including said port index sequence of said CSI-RS resources from said second TRP.

59. The method of claim 58, wherein for the first set of port indices of the first TRP, configuring port indices of up to K1 CSI-RS resources, the port indices of each of the CSI-RS resources being configured according to a sequential arrangement of CSI-RS resource indices associated with one of the CSI resource settings linked to the CSI reporting configuration, the CSI resource settings indicated by resources of channel measurement parameters, wherein the CSI-RS resources are transmitted from the first TRP; and

60. The method of claim 59, wherein among the port indices of each of the CSI-RS resources, port indices of m ports are represented in a hierarchical ordered arrangement of rank m, the port indices of m ports are represented in the CSI reporting configuration as: Wherein the method comprises the steps of Is the CSI-RS port index of rank m, and R e {1,2, …, RI _max},RI_max = min (8, P), P is the port number in the CSI-RS resource.

61. The method of claim 46, wherein the port index sequence of the CSI-RS resource from a first TRP is configured in a first non-PMI port indication parameter and the port index sequence of the CSI-RS resource from a second TRP is configured in a second non-PMI port indication parameter.

62. The method of claim 61, wherein the port indices of the same rank for the CSI-RS resources from different TRPs are the same.

63. The method of claim 61, wherein the first non-PMI port indication parameter and the second non-PMI port indication parameter are included in a CSI reporting configuration if the UE is configured with the CSI reporting configuration with a reporting number set to "cri-RI-CQI".

64. The method of claim 63, wherein in the port index sequence of the CSI-RS resources from the first TRP, port indices of up to K1 CSI-RS resources are configured and the port indices of each of the CSI-RS resources are configured according to an ordered arrangement of CSI-RS resource indices associated with one of CSI resource settings linked to the CSI report configuration, the CSI resource settings being indicated by resources of channel measurement parameters, wherein the CSI-RS resources originate from the first TRP transmission and among the port indices of each of the CSI-RS resources, port indices of m ports are represented in a rank-m hierarchical ordered arrangement, the port indices of m ports being represented as: Wherein the method comprises the steps of Is the CSI-RS port index of rank m, and R e {1,2, …, RI _max},RI_max = min (8, P), P is the port number in the CSI-RS resource; and

65. The method of claim 46, wherein a first non-PMI port indication parameter and a first port index eight rank parameter are used to indicate the port index sequence for the CSI-RS resource from the first TRP, and a second non-PMI port indication parameter and a second port index eight rank parameter are used to indicate the port index sequence for the CSI-RS resource from the second TRP.

66. The method of claim 65, wherein the second non-PMI port indication parameter and a second port index eight rank parameter are included in the CSI reporting configuration if the UE is configured with the CSI reporting configuration with a reporting number set to "cri-RI-CQI".

67. The method of claim 66, wherein in the port index sequence of the first TRP, port indices of up to K1 CSI-RS resources are configured, the port indices of each of the CSI-RS resources being configured according to a sequential arrangement of CSI-RS resource indices associated with one of the CSI resource settings linked to the CSI report configuration, the CSI resource settings being indicated by resources of channel measurement parameters, wherein the CSI-RS resources originate from the first TRP transmission, and in the port indices of each of the CSI-RS resources, port indices of m ports are represented in a rank-m hierarchical ordered arrangement, the port indices of m ports being represented in the CSI report configuration as: Wherein the method comprises the steps of Is the CSI-RS port index of rank m, and R e {1,2, …, RI _max},RI_max = min (8, P), P is the port number in the CSI-RS resource; and

68. The method of claim 46 wherein a set of preset port indices are provided for the first TRP as the port index sequence for the CSI-RS resource from the first TRP and a set of offset values are provided for the second TRP and utilized to determine the port index sequence for the CSI-RS resource from the second TRP.

69. The method of claim 68 wherein if the UE configures the CSI reporting configuration with reporting number set to "cri-RI-CQI" and the higher layer parameters of the non-PMI port indication parameters are not configured, providing the first TRP with the set of preset port indices and indicating RI _max offset values to determine the port index sequence for the CSI-RS resources from the second TRP, wherein the offset values are provided by rank.

70. The method of claim 69, wherein the offset value is predefined or signaled via DCI, MAC CE, or RRC.

71. The method of claim 69, wherein for the CSI-RS resources of the first TRP configured in CSI resource settings linked with the CSI reporting configuration, a preset port index of rank mIs {0, …, m-1}, where rank m=1, 2, …, RI _max,RI_max =min (8, P), where P is the number of ports in the CSI-RS resource.

72. The method of claim 69, wherein for the CSI-RS resources of the second TRP configured in the CSI resource settings linked to CSI reporting configuration, port index of rank nFor { (0+offset _(n-1))modP,…,(((n-1)+offset_(n-1)) modP }, where rank n=1, 2, …, RI _max, and RI _max =min (8, P), P is the number of ports in CSI-RS resources.

73. The method of claim 46, wherein if the UE is configured with a CSI reporting configuration with a reporting number set to "cri-RI-CQI" and the higher layer parameters of non-PMI port indication parameters are not configured, providing a first set of preset port indices for the first TRP as the port index sequence for the CSI-RS resource from the first TRP, providing a second set of preset port indices for the second TRP as the port index sequence for the CSI-RS resource from the second TRP, and each set of preset port indices is provided by rank.

74. The method of claim 73, wherein for the CSI-RS resources from the first TRP configured in CSI resource settings linked with the CSI reporting configuration, a preset port index of rank mIs {0, …, m-1}, where rank m = 1,2, …, RI _max,RI_max = min (8, P), and P is the number of ports in the CSI-RS resource.

75. The method of claim 73, wherein for the CSI-RS resources from the second TRP configured in CSI resource settings linked with the CSI reporting configuration, a preset port index for rank n isWhere rank n=1, 2, …, RI _max,RI_max =min (8, P), and P is the number of ports in the CSI-RS resource.

76. The method of claim 46, wherein for CSI reports associated with single TRP and multi TRP measurement hypotheses, RI sharing is enabled between single TRP and multi TRP measurement hypotheses if the UE configures the CSI reporting configuration with a reporting number set to "cri-RI-CQI" and if non-PMI based CSI measurements and reporting are applied in single TRP and multi TRP/panel measurement hypotheses.

77. The method of claim 46, wherein for CSI reporting associated with single TRP and multi TRP measurement hypotheses, if the UE configures the CSI reporting configuration with a reporting number set to "cri-RI-CQI" and if non-PMI based CSI measurement and reporting are applied in single TRP and multi TRP/panel measurement hypotheses, and if a port number and port index of CSI-RS resources for single TRP measurement is the same as a port number and port index of CSI-RS resources for multi TRP measurement, RI sharing is enabled between single TRP and multi TRP measurement hypotheses.

78. The method of claim 46, wherein for CSI reports associated with single TRP and multi TRP measurement hypotheses, RI sharing is enabled between single TRP and multi TRP measurement hypotheses if the UE configures the CSI reporting configuration with a reporting number set to "cri-RI-CQI" and if non-PMI based CSI measurements and reporting are applied in single TRP and multi TRP/panel measurement hypotheses and if rank indication RI for single TRP is the same as RI for multi TRP measurements.

79. The method of claim 46, wherein for CSI reporting associated with single TRP and multi TRP measurement hypotheses, CQI sharing is enabled between single TRP and multi TRP measurement hypotheses if the UE configures a CSI reporting configuration with a reporting number set to "cri-RI-CQI" and if non-PMI based CSI measurement and reporting is applied in the single TRP and multi TRP/panel measurement hypotheses and if a port number and port index of CSI-RS resources for the single TRP measurement is the same as a port number and port index of CSI-RS resources for the multi TRP measurement.

80. A base station, comprising:

A processor configured to invoke and run a computer program stored in a memory to cause a chip-mounted device to perform the method of any of claims 46 to 79.

81. A chip, comprising:

a processor configured to invoke and run a computer program stored in a memory, causing a chip-mounted device to perform the method of any of claims 46 to 79.

82. A computer readable storage medium storing a computer program, wherein the computer program causes a computer to perform the method of any one of claims 46 to 79.

83. A computer program product comprising a computer program, wherein the computer program causes a computer to perform the method of any one of claims 46 to 79.

84. A computer program, wherein the computer program causes a computer to perform the method of any one of claims 46 to 79.