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WO2025145716A1 - Procédé et appareil de communication - Google Patents

Procédé et appareil de communication Download PDF

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Publication number
WO2025145716A1
WO2025145716A1 PCT/CN2024/123766 CN2024123766W WO2025145716A1 WO 2025145716 A1 WO2025145716 A1 WO 2025145716A1 CN 2024123766 W CN2024123766 W CN 2024123766W WO 2025145716 A1 WO2025145716 A1 WO 2025145716A1
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WO
WIPO (PCT)
Prior art keywords
reference signal
sequence
information
signal resource
index
Prior art date
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PCT/CN2024/123766
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English (en)
Chinese (zh)
Inventor
刘磊
毕晓艳
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Publication date
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Publication of WO2025145716A1 publication Critical patent/WO2025145716A1/fr
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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path

Definitions

  • the present application relates to the field of communication technology, and in particular to a communication method and device.
  • RS reference signal
  • pilot pilot
  • One arrangement of reference signal resources is uniform arrangement in the frequency domain.
  • a reference signal resource pattern is used to indicate the location of the reference signal resources.
  • the network device can indicate the reference signal resource pattern to the terminal device so that the terminal device can transmit a reference signal based on the reference signal resource pattern for channel estimation.
  • the number of reference signal ports also increases accordingly. If the reference signal resources are still designed to be evenly arranged in the frequency domain, it may cause higher resource overhead. In order to reduce resource overhead, another arrangement of reference signal resources is proposed, that is, non-uniform arrangement in the frequency domain. For non-uniformly arranged reference signal resource patterns, the indication method of uniformly arranged reference signal resource patterns may cause higher indication overhead.
  • an embodiment of the present application provides a communication method, which can be applied to a terminal device or a component in a terminal device (such as a unit/module, circuit or chip, etc.), the method comprising: receiving first information, wherein the first information is used to indicate a first relationship; determining position information based on the first relationship and a first sequence, the first sequence is used to generate a reference signal, the position information is used to indicate a position of a first reference signal resource, and the first reference signal resource is used to map the reference signal.
  • the position information used to indicate the position of the first reference signal resource satisfies a first relationship with the first sequence used to generate the reference signal.
  • the network device can indicate the position of the first reference signal resource to the terminal device by indirectly indicating the first relationship. For the first reference signal resources that are non-uniformly arranged in the frequency domain, there is no need to indicate the position of each resource included in the first reference signal resource in turn, thereby reducing the indication overhead of the network device for indicating the position of the first reference signal resource.
  • the first relationship is used to indicate one or more of the following: the phase of the first sequence is a quadratic polynomial of the position information; the rate of change of the phase of the first sequence with respect to the position information is a linear polynomial of the position information; the phase of a base sequence corresponding to the first sequence is a quadratic polynomial of the position information; or, the rate of change of the phase of the base sequence corresponding to the first sequence with respect to the position information is a linear polynomial of the position information.
  • multiple representations of the first relationship between the first sequence and the position information are provided, such as using a quadratic polynomial or a linear polynomial.
  • the mathematical form of the quadratic polynomial or the linear polynomial may be (pre) configured, or may be defined by a standard, or may be agreed upon between the terminal device and the network device.
  • the first information includes one or more of the following: part or all of the coefficients of the quadratic polynomial or the first polynomial; the group number of the first sequence; or, at least one first parameter; wherein the group number of the first sequence and the at least one first parameter are used to determine part or all of the coefficients of the quadratic polynomial or the first polynomial.
  • the first information can specifically indicate key parameters of the quadratic polynomial or the linear polynomial without indicating the entire content of the first relationship.
  • the terminal device can quickly determine the entire content of the first relationship based on the first information and the predefined mathematical form of the quadratic polynomial or the linear polynomial, thereby reducing the indication overhead of the network device to indicate the first relationship to the terminal device.
  • determining the position information based on the first relationship and the first sequence includes: determining the position information based on the first relationship and a base sequence corresponding to the first sequence.
  • a method for determining position information is provided.
  • the base sequence corresponding to the first sequence and the position information satisfy a first relationship
  • the position information can be determined based on the base sequence corresponding to the first sequence and the first relationship.
  • the method further includes: receiving second information, where the second information is used to indicate a base sequence corresponding to the first sequence, and a phase of the base sequence corresponding to the first sequence is represented by an H-order polynomial, where H is an integer greater than or equal to 2.
  • a representation method of the phase of the base sequence corresponding to the first sequence is provided, for example, using an H-order polynomial for representation.
  • the mathematical form of the H-order polynomial can be (pre) configured, or can be defined by a standard, or can be agreed upon by the terminal device and the network device.
  • the H-order polynomial can facilitate the terminal device to determine the location information.
  • the second information includes one or more of the following: the highest degree of the H-order polynomial; part or all of the coefficients of the H-order polynomial; or the length of the base sequence corresponding to the first sequence.
  • the second information can specifically indicate the key parameters of the H-order polynomial without indicating the entire content of the base sequence corresponding to the first sequence, thereby reducing the indication overhead of the network device to indicate the base sequence corresponding to the first sequence.
  • the location information includes relative location information and/or absolute location information of M resources included in the first reference signal resource, where M is a positive integer.
  • the network device indicates the location information in a more flexible manner, and correspondingly, the terminal device determines the location information in a more flexible manner.
  • the location information includes the relative location information; the method further includes: receiving third information, the third information is used to indicate reference location information, and the reference location information and the relative location information are used to determine the absolute location information.
  • the network device may indicate reference location information to the terminal device, so that the terminal device can determine absolute location information based on the reference location information and relative location information, that is, clarify the absolute location of the first reference signal resource.
  • the relative position information is used to indicate M relative indexes of the positions of M resources included in the first reference signal resource
  • the absolute position information is used to indicate M absolute indexes of the positions of M resources included in the first reference signal resource
  • the reference position information is used to indicate the index of the reference position
  • the index of the reference position is less than or equal to the absolute index of the position of the starting resource of the first reference signal resource, wherein the i-th absolute index among the M absolute indexes is the sum of the index of the reference position and the i-th relative index among the M relative indexes, and i is an integer greater than or equal to 0
  • the index of the reference position is greater than or equal to the absolute index of the position of the ending resource of the first reference signal resource, wherein the i-th absolute index among the M absolute indexes is the difference between the index of the reference position and the i-th relative index among the M relative indexes, and i is an integer greater than or equal to 0.
  • the network device can flexibly indicate the index of the reference position, and the terminal device can also flexibly determine the absolute index of the position of the first reference signal resource based on the index of the reference position and the relative index of the position of the first reference signal resource.
  • the first sequence is one of N sequences
  • the first reference signal resource is one of N reference signal resources
  • the N sequences correspond one-to-one to the N reference signal resources
  • N is a positive integer
  • the method also includes: mapping the M elements in each sequence of the N sequences one-to-one to the M resources in each reference signal resource of the N reference signal resources, wherein the kth element in the jth sequence of the N sequences is mapped to the rth resource in the jth reference signal resource of the N reference signal resources, wherein j is an integer greater than or equal to 0, k is an integer greater than or equal to 0, r is an integer greater than or equal to 0, k is equal to r, or the sum of k and r is equal to M-1 or M+1.
  • the elements in the first sequence correspond/map to the positions of the resources included in the first reference signal resource one by one, and there is no limitation on how to correspond to the embodiments of the present application, as long as the terminal device and the network device have a consistent understanding of the mapping method of the first sequence to the first reference signal resource.
  • k is equal to r, that is, the elements in the jth sequence are mapped one by one to the positions of the resources included in the jth reference signal resource in a sequential manner.
  • the sum of k and r is equal to M-1 or M+1, that is, the elements in the jth sequence are mapped one by one to the positions of the resources included in the jth reference signal resource in a reverse order.
  • the method further includes: receiving fourth information, where the fourth information is used to indicate the first sequence, and a phase of the first sequence is represented by an S-order polynomial, where S is an integer greater than or equal to 2.
  • a representation method of the phase of the first sequence is provided, for example, using an S-order polynomial for representation, where S
  • the mathematical form of the S-order polynomial may be (pre) configured, or may be defined by a standard, or may be agreed upon by the terminal device and the network device.
  • the S-order polynomial may facilitate the terminal device to determine location information.
  • the fourth information includes a first parameter set or a second parameter set, the first parameter set is used to generate the first sequence, and the second parameter set and a base sequence corresponding to the first sequence are used to generate the first sequence.
  • the first parameter set can be used to generate the first sequence.
  • the first parameter set can be understood as a set of parameters of the first sequence.
  • the first sequence is directly indicated by the first parameter set, thereby reducing the steps for the terminal device to determine the first sequence.
  • the second parameter set and the base sequence corresponding to the first sequence can be used to generate the first sequence.
  • the second parameter set can be understood as a set of key parameters of the function or correspondence between the base sequence corresponding to the first sequence and the first sequence.
  • the first sequence is indirectly indicated by the second parameter set, thereby reducing the indication overhead of the network device indicating the first sequence.
  • the first parameter set includes one or more of the following: the highest degree of the S-order polynomial; part or all of the coefficients of the S-order polynomial; or the length of the first sequence.
  • the first parameter set can specifically indicate the key parameters of the S-order polynomial without indicating the entire content of the first sequence, thereby reducing the indication overhead of the network device directly indicating the first sequence through the first parameter set.
  • the method further includes: sending or receiving the reference signal on the first reference signal resource.
  • the terminal device determines the position of the first reference signal resource, it can send a reference signal on the first reference signal resource, or it can receive a reference signal from a network device on the first reference signal resource.
  • an embodiment of the present application also provides a communication method, which can be applied to a terminal device or a component in a terminal device (such as a unit/module, circuit or chip, etc.), the method comprising: receiving fifth information, the fifth information is used to indicate a first parameter, the first parameter and a D-order polynomial are used to determine position information, the position information is used to indicate the position of a first reference signal resource, and D is a positive integer.
  • the location information used to indicate the location of the first reference signal resource can be represented by a D-order polynomial, and the mathematical form of the D-order polynomial can be (pre) configured, or can also be defined by a standard, or can also be agreed upon by the terminal device and the network device.
  • the network device can indicate the location of the first reference signal resource to the terminal device by directly indicating the key parameter (i.e., the first parameter) of the D-order polynomial.
  • the key parameter i.e., the first parameter
  • the fifth information can specifically indicate the key parameters of the D-order polynomial without indicating the location of each resource included in the first reference signal resource, thereby reducing the indication overhead of the network device indicating the location of the first reference signal resource.
  • the network device indicates the location information in a more flexible manner, and correspondingly, the terminal device determines the location information in a more flexible manner.
  • the location information includes the relative location information; the method further includes: receiving third information, the third information is used to indicate reference location information, and the reference location information and the relative location information are used to determine the absolute location information.
  • the network device may indicate reference location information to the terminal device, so that the terminal device can determine absolute location information based on the reference location information and relative location information, that is, clarify the absolute location of the first reference signal resource.
  • the relative position information is used to indicate M relative indexes of the positions of M resources included in the first reference signal resource
  • the absolute position information is used to indicate M absolute indexes of the positions of M resources included in the first reference signal resource
  • the reference position information is used to indicate the index of the reference position
  • the index of the reference position is less than or equal to the absolute index of the position of the starting resource of the first reference signal resource, wherein the i-th absolute index among the M absolute indexes is the sum of the index of the reference position and the i-th relative index among the M relative indexes, and i is an integer greater than or equal to 0
  • the index of the reference position is greater than or equal to the absolute index of the position of the ending resource of the first reference signal resource, wherein the i-th absolute index among the M absolute indexes is the difference between the index of the reference position and the i-th relative index among the M relative indexes, and i is an integer greater than or equal to 0.
  • the network device can flexibly indicate the index of the reference position, and the terminal device can also flexibly determine the absolute index of the position of the first reference signal resource based on the index of the reference position and the relative index of the position of the first reference signal resource.
  • the method further includes: receiving fourth information, the fourth information being used to indicate a first sequence, the first sequence being used to generate a reference signal, the first reference signal resource being used to map the reference signal, and the phase of the first sequence being represented by an S-order polynomial, where S is an integer greater than or equal to 2.
  • a representation method of the phase of the first sequence is provided, for example, using an S-order polynomial to represent it.
  • the mathematical form of the S-order polynomial can be (pre) configured, or can be defined by a standard, or can be agreed upon by a terminal device and a network device.
  • the S-order polynomial can facilitate the terminal device to determine location information.
  • the fourth information includes a first parameter set or a second parameter set, the first parameter set is used to generate the first sequence, and the second parameter set and a base sequence corresponding to the first sequence are used to generate the first sequence.
  • two methods are provided for the fourth information to indicate the first sequence, such as directly indicating the first sequence through the first parameter set to reduce the steps for the terminal device to determine the first sequence, and indirectly indicating the first sequence through the second parameter set to reduce the indication overhead of the network device to indicate the first sequence.
  • the first parameter set includes one or more of the following: the highest degree of the S-order polynomial; part or all of the coefficients of the S-order polynomial; or the length of the first sequence.
  • the first parameter set can specifically indicate the key parameters of the S-order polynomial without indicating the entire content of the first sequence, thereby reducing the indication overhead of the network device directly indicating the first sequence through the first parameter set.
  • the first sequence is one of N sequences
  • the first reference signal resource is one of N reference signal resources
  • the N sequences correspond one-to-one to the N reference signal resources
  • N is a positive integer
  • the method also includes: mapping the M elements in each sequence of the N sequences one-to-one to the M resources in each reference signal resource of the N reference signal resources, wherein the kth element in the jth sequence of the N sequences is mapped to the rth resource in the jth reference signal resource of the N reference signal resources, wherein j is an integer greater than or equal to 0, k is an integer greater than or equal to 0, r is an integer greater than or equal to 0, k is equal to r, or the sum of k and r is equal to M-1 or M+1.
  • the elements in the first sequence correspond/map to the positions of the resources included in the first reference signal resource one by one, and there is no limitation on how to correspond to the embodiments of the present application, as long as the terminal device and the network device have a consistent understanding of the mapping method of the first sequence to the first reference signal resource.
  • k is equal to r, that is, the elements in the jth sequence are mapped one by one to the positions of the resources included in the jth reference signal resource in a sequential manner.
  • the sum of k and r is equal to M-1 or M+1, that is, the elements in the jth sequence are mapped one by one to the positions of the resources included in the jth reference signal resource in a reverse order.
  • the method further includes: sending or receiving the reference signal on the first reference signal resource.
  • the terminal device determines the position of the first reference signal resource, it can send a reference signal on the first reference signal resource, or it can receive a reference signal from a network device on the first reference signal resource.
  • an embodiment of the present application also provides a communication method, which can be applied to a network device or a component in a network device (such as a unit/module, circuit or chip, etc.), the method comprising: sending first information, the first information is used to indicate a first relationship, the first relationship and a first sequence are used to determine position information, the first sequence is used to generate a reference signal, the position information is used to indicate a position of a first reference signal resource, and the first reference signal resource is used to map the reference signal.
  • the first relationship is used to indicate one or more of the following: the phase of the first sequence is a quadratic polynomial of the position information; the rate of change of the phase of the first sequence with respect to the position information is a linear polynomial of the position information; the phase of a base sequence corresponding to the first sequence is a quadratic polynomial of the position information; or, the rate of change of the phase of the base sequence corresponding to the first sequence with respect to the position information is a linear polynomial of the position information.
  • the first information includes one or more of the following: part or all of the coefficients of the quadratic polynomial or the first polynomial; the group number of the first sequence; or, at least one first parameter; wherein the group number of the first sequence and the at least one first parameter are used to determine part or all of the coefficients of the quadratic polynomial or the first polynomial.
  • the first relationship and the first sequence are used to determine the position information, including: the first relationship and a base sequence corresponding to the first sequence are used to determine the position information.
  • the method further includes: sending second information, where the second information is used to indicate a base sequence corresponding to the first sequence, and a phase of the base sequence corresponding to the first sequence is represented by an H-order polynomial, where H is an integer greater than or equal to 2.
  • the second information includes one or more of the following: the highest degree of the H-order polynomial; part or all of the coefficients of the H-order polynomial; or the length of the base sequence corresponding to the first sequence.
  • the location information includes relative location information and/or absolute location information of M resources included in the first reference signal resource, where M is a positive integer.
  • the location information includes the relative location information; the method further includes: sending third information, the third information is used to indicate reference location information, and the reference location information and the relative location information are used to determine the absolute location information.
  • the relative position information is used to indicate M relative indexes of the positions of M resources included in the first reference signal resource
  • the absolute position information is used to indicate M absolute indexes of the positions of M resources included in the first reference signal resource
  • the reference position information is used to indicate the index of the reference position
  • the index of the reference position is less than or equal to the absolute index of the position of the starting resource of the first reference signal resource, wherein the i-th absolute index among the M absolute indexes is the sum of the index of the reference position and the i-th relative index among the M relative indexes, and i is an integer greater than or equal to 0
  • the index of the reference position is greater than or equal to the absolute index of the position of the ending resource of the first reference signal resource, wherein the i-th absolute index among the M absolute indexes is the difference between the index of the reference position and the i-th relative index among the M relative indexes, and i is an integer greater than or equal to 0.
  • the first sequence is one of N sequences
  • the first reference signal resource is one of N reference signal resources
  • the N sequences correspond one-to-one to the N reference signal resources
  • N is a positive integer
  • the method also includes: mapping the M elements in each sequence of the N sequences one-to-one to the M resources in each reference signal resource of the N reference signal resources, wherein the kth element in the jth sequence of the N sequences is mapped to the rth resource in the jth reference signal resource of the N reference signal resources, wherein j is an integer greater than or equal to 0, k is an integer greater than or equal to 0, r is an integer greater than or equal to 0, k is equal to r, or the sum of k and r is equal to M-1 or M+1.
  • the location information includes the relative location information; the method further includes: receiving third information, the third information is used to indicate reference location information, and the reference location information and the relative location information are used to determine the absolute location information.
  • the first parameter set includes one or more of the following: the highest degree of the S-order polynomial; part or all of the coefficients of the S-order polynomial; or the length of the first sequence.
  • the first sequence is one of N sequences
  • the first reference signal resource is one of N reference signal resources
  • the N sequences correspond one-to-one to the N reference signal resources
  • N is a positive integer
  • the method also includes: mapping the M elements in each sequence of the N sequences one-to-one to the M resources in each reference signal resource of the N reference signal resources, wherein the kth element in the jth sequence of the N sequences is mapped to the rth resource in the jth reference signal resource of the N reference signal resources, wherein j is an integer greater than or equal to 0, k is an integer greater than or equal to 0, r is an integer greater than or equal to 0, k is equal to r, or the sum of k and r is equal to M-1 or M+1.
  • the method further includes: receiving or sending the reference signal on the first reference signal resource.
  • the beneficial effects of the fourth aspect and its embodiments can refer to the beneficial effects of the second aspect and any one of its embodiments.
  • an embodiment of the present application provides a communication device, including a processor and a memory; the memory is used to store computer instructions, and when the device is running, the processor executes the computer instructions stored in the memory to enable the device to execute any implementation method in the first aspect, the second aspect, the third aspect, or the fourth aspect.
  • the memory can be a volatile or non-volatile memory, such as a cache in a semiconductor chip.
  • an embodiment of the present application provides a communication device, which may be a terminal device or a network device, or a chip for a terminal device or a network device.
  • the device has the function of implementing any implementation method in the first aspect, the second aspect, the third aspect, or the fourth aspect.
  • the function may be implemented by hardware, or may be implemented by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above functions.
  • an embodiment of the present application provides a communication device, comprising a unit or means for executing each step of any implementation method in the above-mentioned first aspect, or second aspect, or third aspect, or fourth aspect.
  • an embodiment of the present application provides a communication device, including a processor and an interface circuit, wherein the processor is used to communicate with other devices through the interface circuit and execute any implementation method in the first aspect, the second aspect, the third aspect, or the fourth aspect.
  • the processor may be one or more processors.
  • an embodiment of the present application provides a communication device, comprising a processor coupled to a memory, the processor being used to call a program stored in the memory to execute any implementation method in the first aspect, the second aspect, the third aspect, or the fourth aspect.
  • the memory may be located inside the device or outside the device.
  • the processor may also be one or more processors.
  • an embodiment of the present application also provides a computer program product, which includes a computer program or instructions.
  • a computer program product which includes a computer program or instructions.
  • an embodiment of the present application also provides a chip system, including: a processor, used to execute any implementation method in the above-mentioned first aspect, or second aspect, or third aspect, or fourth aspect.
  • an embodiment of the present application also provides a communication system, which includes: a terminal device, used to execute any implementation method executed by the terminal device in the above-mentioned first aspect, or the second aspect, or the third aspect, or the fourth aspect; a network device, used to execute any implementation method executed by the network device in the above-mentioned first aspect, or the second aspect, or the third aspect, or the fourth aspect.
  • FIG1 is a schematic diagram of the structure of a communication system provided in an embodiment of the present application.
  • FIG. 2 is a diagram of a demodulation reference signal (DMRS) resource pattern provided in an embodiment of the present application. Schematic diagram;
  • FIG4 is a schematic diagram of a channel state information-reference signal (CSI-RS) resource pattern provided in an embodiment of the present application;
  • CSI-RS channel state information-reference signal
  • FIG6 is a flow chart of a communication method 600 provided in an embodiment of the present application.
  • FIG. 13 is a schematic diagram of a communication device 1300 provided in an embodiment of the present application.
  • the wireless access network 100 includes at least one network device (such as network devices 110a and 110b in FIG. 1, collectively referred to as network devices 110) and at least one terminal device (such as terminal devices 120a-120j in FIG. 1, collectively referred to as terminal devices 120).
  • the wireless access network 100 may also include other devices, such as wireless relay devices and/or wireless backhaul devices (not shown in FIG. 1).
  • the terminal device 120 is connected to the network device 110 in a wireless manner.
  • the network device 110 is connected to the core network 200 in a wireless or wired manner.
  • the core network device in the core network 200 and the network device 110 in the wireless access network 100 may be different physical devices, or may be the same physical device that integrates the core network logical functions and the wireless access network logical functions.
  • the wireless access network 100 may be a 3GPP-related communication system (e.g., a 5G mobile communication system) or other next-generation mobile communication systems (e.g., a 6G mobile communication system).
  • the wireless access network 100 may also be an open access network (open RAN, O-RAN or ORAN), a cloud radio access network (cloud radio access network, CRAN), or a WiFi system.
  • the wireless access network 100 may also be a communication system that integrates two or more of the above systems.
  • the RAN node may be a base station, an evolved NodeB (eNodeB), an access point (AP), a transmission reception point (TRP), a next generation NodeB (gNB), a next generation base station in a 6G mobile communication system, a base station in a future mobile communication system, or an access node in a WiFi system.
  • the RAN node may be a macro base station (such as 110a in FIG. 1 ), a micro base station or an indoor station (such as 110b in FIG. 1 ), a relay node or a donor node, or a wireless controller in a CRAN scenario.
  • the RAN node may also be a server, a wearable device, a vehicle or an onboard device, etc.
  • the RAN node in the V2X technology may be a road side unit (RSU).
  • CU or CU-CP and CU-UP
  • DU or RU may also have different names, but those skilled in the art can understand their meanings.
  • CU may also be called O-CU (open CU)
  • DU may also be called O-DU
  • CU-CP may also be called O-CU-CP
  • CU-UP may also be called O-CU-UP
  • RU may also be called O-RU.
  • CU, CU-CP, CU-UP, DU and RU are described as examples in this application.
  • Any unit of CU (or CU-CP, CU-UP), DU and RU in this application may be implemented by a software module, a hardware module, or a combination of a software module and a hardware module.
  • the terminal device 120 may also be referred to as a terminal, user equipment (UE), mobile station, mobile terminal, etc.
  • the terminal device 120 may be widely used in various scenarios, such as device-to-device (D2D), V2X communication, machine-type communication (MTC), IOT communication, virtual reality, augmented reality, industrial control, autonomous driving, telemedicine, smart grid, smart furniture, smart office, smart wear, smart transportation, smart city, etc.
  • the terminal device 120 may be a mobile phone, a tablet computer, a computer with wireless transceiver function, a wearable device, a vehicle, a drone, a helicopter, an airplane, a ship, a robot, a robotic arm, a smart home device, etc.
  • Channel estimation When sending or receiving information between a network device and a terminal device, it is necessary to estimate the characteristics of the channel (or can be described as a communication link or transmission link) between the network device and the terminal device, so as to modulate, code and precode the information to be sent according to the characteristics.
  • the information used to estimate the characteristics of the channel can be called a reference signal (RS) (can be called a pilot signal or pilot), and the process of estimating the reference signal is also called channel estimation.
  • RS reference signal
  • Both the network device and the terminal device can perform channel estimation separately.
  • the network device can estimate the uplink channel based on the uplink reference signal.
  • the uplink reference signal includes a demodulation reference signal (DMRS) and a sounding reference signal (SRS).
  • DMRS demodulation reference signal
  • SRS sounding reference signal
  • the network device can also estimate the downlink channel based on the estimated uplink channel according to the reciprocity of the uplink channel and the downlink channel. Similarly, the terminal device can estimate the downlink channel based on the downlink reference signal.
  • Downlink reference signals include channel state information-reference signal (CSI-RS), cell-specific reference signal (C-RS/CRS), and positioning reference signal (P-RS/PRS).
  • CSI-RS channel state information-reference signal
  • C-RS/CRS cell-specific reference signal
  • P-RS/PRS positioning reference signal
  • the terminal device can also estimate the uplink channel based on the estimated downlink channel based on the reciprocity of the uplink channel and the downlink channel. It should be understood that there are many types of reference signals. As the standards continue to evolve, the names of the above reference signals may change, and more types of reference signals may appear, without specific limitation.
  • Time domain resources and/or frequency domain resources can also be called time-frequency resources.
  • an RB may include several subcarriers.
  • an RB includes 12 subcarriers, where each subcarrier spacing may be 15kHz.
  • other subcarrier spacings may also be used, such as 3.75kHz, 30kHz, 60kHz or 120kHz subcarrier spacing, which are not limited here.
  • a subcarrier or resource element (RE) can be regarded as a minimum frequency resource unit on a specific symbol in a multi-carrier system.
  • RE can refer to a unit of time-frequency resources, for example, it can be regarded as the minimum time-frequency resource unit.
  • 1 RE occupies 1 symbol in the time domain and 1 subcarrier in the frequency domain, that is, 1 subcarrier in 1 symbol in the time domain is 1 RE.
  • a reference signal resource pattern which is used to indicate the location of the reference signal resource.
  • Reference signal resources or resources that may be referred to as reference signal ports or reference signal resources
  • One arrangement of reference signal resources is to arrange them at equal intervals or evenly in the frequency domain.
  • the network device may transmit a reference signal based on the reference signal resource pattern for channel estimation.
  • the network device may also indicate the reference signal resource pattern to the terminal device, so that the terminal device may transmit a reference signal based on the reference signal resource pattern for channel estimation.
  • DMRS has two different types: Configuration type 1 and Configuration type 2. Both types support two numbers of symbols: single symbol and double symbol.
  • Configuration type 1 is shown in (1) of Figure 2.
  • the DMRS ports are divided into two code division multiplexing (CDM) groups: CDM group 1 and CDM group 2. Code division multiplexing is used between ports within the group, and the ports between groups are offset by 1 subcarrier in the frequency domain.
  • CDM group 1 code division multiplexing
  • Single-symbol DMRS supports 6 ports, which are divided into three CDM groups: (P0, P1), (P2, P3), and (P4, P5); dual-symbol DMRS supports 8 ports, which are divided into three CDM groups: (P0, P1, P6, P7), (P2, P3, P8, P9), and (P4, P5, P10, P11).
  • the mapping relationship between the port index and the DMRS resource pattern can be predefined, and then the DMRS resource pattern can be indicated by indicating the port index.
  • K TC can be configured to 8 and combOffset can be configured to (0, 1, 2, 3, 4, 5, 6, 7), that is, there are 7 subcarriers between two adjacent resources used to transmit SRS, counting from left to right, the 1st subcarrier and the 9th subcarrier are used to transmit SRS.
  • K TC can be configured as 4, combOffset is (0, 1, 2, 3), and there are 3 subcarriers between two adjacent resources for transmitting reference signals. Counting from left to right, the 1st subcarrier, the 5th subcarrier, the 9th subcarrier, and the 14th subcarrier are all used to transmit reference signals.
  • combOffset can be configured to (0, 1, 2, 3, 4, 5, 6, 7), that is, there are 7 subcarriers between two adjacent resources used to transmit SRS, counting from left to right, the 1st subcarrier and the 9th subcarrier are used to transmit SRS.
  • combOffset is (0, 1, 2, 3)
  • K TC can be configured as 2, combOffset is (0, 1), and there is 1 subcarrier between two adjacent resources for transmitting reference signals. Counting from left to right, the 1st subcarrier, the 3rd subcarrier, the 5th subcarrier, the 7th subcarrier, the 9th subcarrier, the 11th subcarrier, the 13th subcarrier, and the 15th subcarrier are all used to transmit reference signals.
  • the SRS resource pattern of FIG. 3 the SRS resource pattern can be indicated by indicating the comb density and the comb offset.
  • CSI-RS resources are defined as Y resource elements (RE) continuous in the frequency domain and Z symbols continuous in the time domain for one RB.
  • the (Y, Z) combinations supported by the protocol are (1, 1), (2, 1), (2, 2) and (2, 4).
  • CSI-RS resources can be mapped to Y*Z ports in a CDM manner.
  • the CDM supported by the protocol are no CDM, CDM2, CDM4 and CDM8.
  • the frequency domain density ⁇ of the CSI-RS resource is the number of repetitions of the CSI-RS resource in the frequency domain, that is, it is repeated once every 1/ ⁇ RBs. ⁇ can be preconfigured or predefined, for example, it can be predefined by the protocol.
  • FIG 4 is a schematic diagram of a CSI-RS resource pattern provided in an embodiment of the present application.
  • ⁇ can be configured to 3, that is, the CSI-RS resource is repeated once every 1/3 RB.
  • p can be configured as 1, that is, the CSI-RS resource is repeated once every 1 RB.
  • the CSI-RS resource pattern can be indicated by indicating the frequency domain density.
  • Figure 5 is a schematic diagram of reference signal resources arranged unevenly in the frequency domain.
  • the vertical axis coordinate of Figure 5 is, for example, the frequency domain (in units of subcarriers), and the horizontal axis is a time domain unit.
  • the above-mentioned indication method of reference signal resource patterns that are arranged equidistantly or uniformly in the frequency domain can be used, such as indicating a DMRS resource pattern that is arranged unequally or non-uniformly in the frequency domain by indicating a port index, indicating an SRS resource pattern that is arranged unequally or non-uniformly in the frequency domain by indicating a comb density and a comb offset, and indicating a CSI-RS resource pattern that is arranged unequally or non-uniformly in the frequency domain by indicating a frequency domain density; or, a bitmap indication method can also be used, such as using 1 bit to indicate whether each reference signal candidate resource is a reference signal resource, 0 for no, and 1 for yes.
  • indicating reference signal resource patterns that are arranged unequally or non-uniformly in the frequency domain by the above two methods may cause higher indication overhead.
  • an embodiment of the present application provides a communication method, which is designed to provide two ways of indicating reference signal resource patterns.
  • Method 1 can indirectly indicate the reference signal resource pattern by indicating the relationship between the reference signal resource pattern and the reference signal
  • method 2 can directly indicate the reference signal resource pattern by indicating the parameters of the polynomial corresponding to the reference signal resource pattern.
  • the above two methods indicate reference signal resource patterns that are not arranged at equal intervals or are not arranged uniformly in the frequency domain, which can reduce the indication overhead.
  • words such as “exemplary” or “for example” are used to indicate examples, illustrations or descriptions. Any embodiment or design described as “exemplary” or “for example” in the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as “exemplary” or “for example” is intended to present related concepts in a specific way.
  • used for indication may include being used for direct indication and being used for indirect indication.
  • indication information when describing that a certain indication information is used for indicating information I, it may include that the indication information directly indicates I or indirectly indicates I, but it does not mean that the indication information must carry I.
  • each information can also be identified and uniformly indicated to reduce the indication overhead caused by indicating the same information separately.
  • the precoding matrix is composed of precoding vectors, and each precoding vector in the precoding matrix may have the same parts in terms of composition or other properties.
  • the specific indication method can also be various existing indication methods, such as but not limited to the above-mentioned indication methods and various combinations thereof.
  • the specific details of the various indication methods can refer to the prior art and will not be repeated herein.
  • the desired indication method can be selected according to specific needs.
  • the embodiment of the present application does not limit the selected indication method. In this way, the indication method involved in the embodiment of the present application should be understood to cover various methods that can enable the party to be indicated to obtain the information to be indicated.
  • sending and “receiving” indicate the direction of signal transmission.
  • sending information to XX can be understood as the destination of the information is XX, which can include direct sending through the air interface, and also includes indirect sending through the air interface by other units or modules.
  • Receiviving information from YY can be understood as the source of the information is YY, which can include directly receiving from YY through the air interface, and also includes indirectly receiving from YY through the air interface from other units or modules.
  • Send can also be understood as the "output” of the chip interface, and “receiving” can also be understood as the "input” of the chip interface.
  • sending and receiving can be performed between devices, for example, between a network device and a terminal device, or can be performed within a device, for example, sending or receiving between components, modules, chips, software modules, or hardware modules within the device through a bus, wiring, or interface.
  • information may be processed between the source and destination of information transmission, such as coding and modulation.
  • the destination end can understand the valid information from the source end. Similar expressions in this application can be understood similarly and will not be repeated.
  • the number of nouns means “singular noun or plural noun", that is, “one or more”.
  • At least one means one or more
  • plural means two or more.
  • “And/or” describes the association relationship of associated objects, indicating that three relationships may exist.
  • a and/or B can mean: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural.
  • the character "/” generally indicates that the previous and next associated objects are in an “or” relationship.
  • A/B means: A or B.
  • “At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items.
  • At least one of a, b, or c means: a, b, c, a and b, a and c, b and c, or a and b and c, where a, b, c can be single or multiple.
  • the ordinal numbers such as "first” and “second” mentioned in the embodiments of the present application are used to distinguish multiple objects, and are not used to limit the size, content, order, timing, priority or importance of multiple objects.
  • the first information and the second information refer to two different information, and do not indicate the difference in content, priority or importance of the two information.
  • the technical features in the technical feature are distinguished by "A”, “B”, “C” and “D”, and there is no order of precedence or order of size between the technical features described by "A”, “B”, “C” and “D”.
  • the mapping rules A and mapping rules B in this article are only for distinguishing different contents, and do not limit the order of precedence or order of size, priority or importance, etc. between mapping rules A and mapping rules B.
  • N P is the length of the first reference signal resource pattern sequence P(n) or the number of resources included in the first reference signal resource
  • N P M
  • d P is the highest number of the first reference signal resource pattern sequence P(n)
  • d P is an integer greater than or equal to 2
  • the at least one second parameter is a key parameter of a function or a corresponding relationship between a set of parameters of a base sequence corresponding to the first sequence and a set of parameters of the position information.
  • the present application may further execute:
  • the network device sends the second information, and correspondingly, the terminal device receives the second information.
  • the second information may be used to indicate a base sequence corresponding to the first sequence, or the second information may be used to indicate a phase of a base sequence corresponding to the first sequence.
  • the embodiment of the present application does not limit the specific name of the second information.
  • the second information may be carried in one or more of RRC signaling, DCI or MAC CE.
  • the phase of the base sequence corresponding to the first sequence can be represented by an H-order polynomial, where H is an integer greater than or equal to 2.
  • the mathematical form of the H-order polynomial can be (pre) configured, or it can be defined by a standard, or it can be agreed upon by a terminal device and a network device.
  • the second information indicating the H-order polynomial may not include the mathematical form of the H-order polynomial, but only include key parameters of the H-order polynomial.
  • the second information includes one or more of the following: the highest degree of the H-order polynomial; some or all of the coefficients of the H-order polynomial; or, the length of the base sequence corresponding to the first sequence.
  • phase of the base sequence corresponding to the first sequence is satisfy:
  • the location information may include relative location information of the M resources included in the first reference signal resource, or absolute location information of the M resources included in the first reference signal resource.
  • the relative location information may be used to indicate M relative indexes of the locations of the M resources included in the first reference signal resource, and the relative index of the location may be understood as an index of the relative location relative to the location of the reference resource, and may also be referred to as a relative location index.
  • the absolute location information may be used to indicate M absolute indexes of the locations of the M resources included in the first reference signal resource, and the absolute index of the location may be understood as an index of the absolute location, and may also be referred to as an absolute location index.
  • the terminal device may also determine the absolute position information based on the relative position information and the reference position information.
  • the reference position information may be used to indicate the index of the reference position, which may be understood as the absolute index of the position of the reference resource. Therefore, referring to FIG. 7 , before executing S602, the present application may also execute:
  • the network device sends the third information, and correspondingly, the terminal device receives the third information.
  • the third information may be used to indicate the reference location information.
  • the embodiment of the present application does not limit the specific name of the third information.
  • the third information may be carried in one or more of RRC signaling, DCI or MAC CE.
  • the method of determining the M relative or absolute indexes of the positions of the M resources included in the first reference signal resource is also different. For example, taking the M absolute indexes of the positions of the M resources included in the first reference signal resource as an example, when the index of the reference position is less than or equal to the absolute index of the position of the starting resource of the first reference signal resource, the i-th absolute index of the M absolute indexes is the sum of the index of the reference position and the i-th relative index of the M relative indexes, and i is an integer greater than or equal to 0.
  • the i-th absolute index among the M absolute indexes is the difference between the index of the reference position and the i-th relative index among the M relative indexes, where i is an integer greater than or equal to 0.
  • Figure 8 is a schematic diagram of the relationship between the relative index, the index of the reference position and the absolute index.
  • Figure 8 takes the absolute index starting from 0, and the absolute index of the positions of the 6 resources included in the first reference signal resource as an example.
  • the index of the reference position is the absolute index 1 of the position of the starting resource of the first reference signal resource
  • the relative index of the positions of the 6 resources included in the first reference signal resource is ⁇ 0, 2, 5, 10, 13, 15 ⁇ .
  • the index of the reference position is the absolute index 16 of the position of the ending resource of the first reference signal resource, then the relative index of the positions of the 6 resources included in the first reference signal resource is ⁇ 15, 13, 10, 5, 2, 0 ⁇ .
  • (A) in FIG8 takes the absolute index of the position of the starting resource of the first reference signal resource as an example
  • (B) in FIG8 takes the absolute index of the position of the ending resource of the first reference signal resource as an example.
  • the index of the reference position is not limited in the embodiment of the present application.
  • the index of the reference position may also be smaller than the absolute index of the position of the starting resource of the first reference signal resource.
  • the index of the reference position is 0, and the relative indexes of the positions of the 6 resources included in the first reference signal resource are ⁇ 1, 3, 6, 11, 14, 16 ⁇ .
  • the index of the reference position may also be smaller than the absolute index of the position of the ending resource of the first reference signal resource.
  • the index of the reference position is 17, and the relative indexes of the positions of the 6 resources included in the first reference signal resource are ⁇ 16, 14, 11, 6, 3, 1 ⁇ .
  • the present application may further execute:
  • the network device sends the fourth information, and correspondingly, the terminal device receives the fourth information.
  • the fourth information is used to indicate the first sequence, or the fourth information can be used to indicate the phase of the first sequence.
  • the embodiment of the present application does not limit the specific name of the fourth information.
  • the fourth information can be carried in one or more of RRC signaling, DCI or MAC CE.
  • the fourth information may directly indicate the first sequence or the phase of the first sequence.
  • the fourth information may include a first parameter set, and the first parameter set may be used to generate the first sequence or the phase of the first sequence.
  • the first parameter set may be understood as a set of parameters of the first sequence.
  • the phase of the first sequence may be represented by an S-order polynomial, where S is an integer greater than or equal to 2.
  • the mathematical form of the S-order polynomial may be (pre) configured, or may be defined by a standard, or may be agreed upon by a terminal device and a network device.
  • the first parameter set used to indicate the S-order polynomial may not include the mathematical form of the S-order polynomial, but only include the key parameters of the S-order polynomial.
  • the first parameter set includes one or more of the following: the highest order of the S-order polynomial; some or all of the coefficients of the S-order polynomial; or, the length of the first sequence.
  • phase of the first sequence satisfy:
  • d S is the phase of the first sequence S(n)
  • d S is an integer greater than or equal to 2
  • d S S
  • the second information may include one or more of the following: d S ; Or, N S .
  • the fourth information may also indirectly indicate the first sequence.
  • the fourth information includes a second parameter set, and the second parameter set and a base sequence corresponding to the first sequence may be used to generate the first sequence, and the second parameter set may be understood as a set of key parameters of a function or corresponding relationship between the base sequence corresponding to the first sequence and the first sequence.
  • the present application may further execute:
  • the terminal device sends or receives a reference signal on the first reference signal resource, and correspondingly, the network device receives or sends a reference signal on the first reference signal resource.
  • the terminal device may map the first sequence S(n) to the first reference signal resource to send or receive a reference signal to the network device. It is understandable that the terminal device may map the M elements included in the first sequence S(n) to the positions of the M resources included in the first reference signal resource in a one-to-one correspondence.
  • the first sequence is one of N sequences
  • the first reference signal resource is one of the N reference signal resources
  • the N sequences correspond one-to-one to the N reference signal resources
  • N is a positive integer.
  • N is 2
  • the first sequence is one of 2 sequences
  • the first reference signal resource is one of the 2 reference signal resources
  • the 2 sequences correspond one-to-one to the 2 reference signal resources
  • the second sequence is the other of the 2 sequences
  • the second reference signal resource is the other of the 2 reference signal resources.
  • the terminal device can map the M elements in each of the N sequences one-to-one to the M resources in each of the N reference signal resources to send or receive a reference signal to a network device, wherein the kth element in the jth sequence in the N sequences is mapped to the rth resource in the jth reference signal resource in the N reference signal resources, and j is an integer greater than or equal to 0.
  • k is an integer greater than or equal to
  • r is an integer greater than or equal to
  • k is equal to r, or the sum of k and r is equal to M-1 or M+1.
  • the M elements in the first sequence are mapped one by one to the M resources in the first reference signal resource
  • the M elements in the second sequence are mapped one by one to the M resources in the second reference signal resource, so as to send or receive a reference signal to the network device.
  • the positions of the M resources included in the first reference signal resource can be indicated by the first reference signal resource pattern sequence P(n).
  • the M elements included in the first sequence S(n) correspond to the positions of the M resources included in the first reference signal resource in a one-to-one manner, and it can also be understood that the M elements included in the first sequence S(n) correspond to the M elements included in the first reference signal resource pattern sequence P(n) in a one-to-one manner.
  • Different mapping methods are introduced below.
  • Method 1 There is no need to sort the first sequence S(n) and the first reference signal resource pattern sequence P(n), and the i-th element of the M elements in the first sequence S(n) is sequentially mapped to the resource indicated by the i-th element of the M elements in the first reference signal resource pattern sequence P(n), where i is a positive integer.
  • the first reference signal resource pattern sequence P(n) indicates M relative indexes of the positions of M resources included in the first reference signal resource, and the first sequence S(n) and the first reference signal resource pattern sequence P(n) satisfy:
  • p 0 is the index of the reference position
  • p start is the absolute index of the position of the starting resource of the first reference signal resource
  • p end is the absolute index of the position of the ending resource of the first reference signal resource.
  • P(n) represents the M relative indexes of the positions of the M resources included in the first reference signal resource
  • p 0 +c ⁇ P(n) represents the M absolute indexes of the positions of the M resources included in the first reference signal resource
  • scalingfactor(n) is an amplitude phase scaling factor sequence, including one or more of the following: an amplitude scaling factor amp(n), a cyclic shift factor cs(n), or a code division multiplexing factor cdm(n).
  • the length of P(n) is N P
  • the length of S(n) is N S
  • the sequence length of scalingfactor(n) is N sf
  • the second sequence is the other of the two sequences, and the second reference signal resource is the other of the two reference signal resources.
  • the length of P 1 (n) is N P1
  • the length of P 2 (n) is N P2
  • the length of S 1 (n) is N S1
  • the length of S 2 (n) is N S2 .
  • N S1 N S2 ,
  • N P1 N P2 .
  • P 1 (n) is a first reference signal resource pattern sequence, used to indicate M relative indexes of positions of M resources included in the first reference signal resource
  • P 2 (n) is a second reference signal resource pattern sequence, used to indicate M relative indexes of positions of M resources included in the second reference signal resource
  • S 1 (n) is a first sequence
  • S 2 (n) is a second sequence.
  • p10 is the index of the reference position corresponding to P1 (n)
  • p1start is the absolute index of the position of the starting resource of the first reference signal resource corresponding to P1 (n)
  • p1end is the absolute index of the position of the starting resource of the first reference signal resource corresponding to P1(n).
  • p20 is the index of the reference position corresponding to P2 (n)
  • p2start is the absolute index of the position of the starting resource of the second reference signal resource corresponding to P2 (n)
  • p2end is the absolute index of the position of the starting resource of the second reference signal resource corresponding to P2(n).
  • the length of P 1 (n) is N P1
  • the length of P 2 (n) is N P2
  • the length of S 1 (n) is N S1
  • the length of S 2 (n) is N S2 .
  • N S1 N S2
  • N P1 N P2 .
  • It is obtained by sorting S 1 (n) according to sorting rule 2 and sorting S 2 (nN S1 ) according to sorting rule 1.
  • It is obtained by sorting P 1 (n) according to sorting rule 1 and sorting P 2 (nN p1 ) according to sorting rule 2.
  • sorting P 1 (n) according to sorting rule 2 and sorting P 2 (nN p1 ) according to sorting rule 1.
  • the terminal device may map the M elements included in each sequence (e.g., the first sequence or the second sequence) to the positions of the M resources included in each reference signal resource (e.g., the first reference signal resource or the second reference signal resource) in a one-to-one correspondence according to any one of Tables 4 to 14. It should be noted that Tables 4 to 14 are merely enumerations, and the embodiments of the present application do not limit the one-to-one mapping of the M elements included in each sequence (e.g., the first sequence) to the positions of the M resources included in each reference signal resource (e.g., the first reference signal resource).
  • the above example uses the example of a terminal device mapping the first sequence to the first reference signal resource and sending a reference signal to the network device.
  • the network device may map the first sequence to the first reference signal resource and send the reference signal to the terminal device. Accordingly, the terminal device receives the reference signal from the network device on the first reference signal resource. For the sake of brevity, it will not be repeated here.
  • FIG. 10 is a flow chart of a communication method 1000 provided in an embodiment of the present application.
  • FIG. 10 introduces the method from the perspective of the interaction between the network device and the terminal device.
  • the communication method 1000 may also be implemented by other devices, such as a chip or a communication device with a communication function.
  • the embodiment of the present application is only performed by a network device and a terminal device as an example, and is not limited to a network device and a terminal device.
  • the embodiment of the present application may also be performed by more terminal devices. When more terminal devices are involved, each of the more terminal devices has the same execution process. As shown in FIG. 10, the process of the communication method 1000 includes the following steps.
  • the network device sends the fifth information, and correspondingly, the terminal device receives the fifth information.
  • the fifth information is used to indicate the first parameter, and the specific name of the fifth information is not limited in the present embodiment. Carried in one or more of RRC signaling, DCI or MAC CE.
  • the terminal device determines location information based on the first parameter and a D-order polynomial.
  • D is a positive integer
  • the mathematical form of the D-order polynomial may be (pre) configured, or may be defined by a standard, or may be agreed upon by the terminal device and the network device.
  • the first parameter may be understood as a key parameter of the D-order polynomial.
  • the D-order polynomial may be understood as a polynomial corresponding to the location information.
  • the location information can be used to indicate the location of the first reference signal resource.
  • the first reference signal resource can be used to map the reference signal, which can be understood as a reference signal can be sent or received on the first reference signal resource.
  • the first reference signal resource may include M resources, where M is a positive integer. It should be understood that the M resources may be all the resources of the first reference signal resource, that is, the first reference signal resource may only include the M resources, or the M resources may be part of the first reference signal resource.
  • the location information can be used to indicate the location of the first reference signal resource including the M resources.
  • the location information can be expressed in the form of a sequence, so the location information can also be referred to as a first reference signal resource pattern sequence, or the location information can also be expressed in the form of a combination number or other forms, as long as it can be used to indicate the location of the first reference signal resource, and the embodiments of the present application do not specifically limit this.
  • the fifth information may include, but is not limited to, one or more of the following: the highest degree of a D-order polynomial; some or all coefficients of a D-order polynomial; or the number of resources included in the first reference signal resource.
  • the number of resources included in the first reference signal resource can be understood as the length of a sequence corresponding to a D-order polynomial or the number of elements included in a sequence corresponding to a D-order polynomial.
  • the fifth information may include but is not limited to one or more of the following: d P ; All or part of the coefficients in ; or, N P .
  • the location information may include relative location information of the M resources included in the first reference signal resource, or absolute location information of the M resources included in the first reference signal resource.
  • the relative location information may be used to indicate M relative indexes of the locations of the M resources included in the first reference signal resource, and the relative index of the location may be understood as an index of the relative location relative to the location of the reference resource, and may also be referred to as a relative location index.
  • the absolute location information may be used to indicate M absolute indexes of the locations of the M resources included in the first reference signal resource, and the absolute index of the location may be understood as an index of the absolute location, and may also be referred to as an absolute location index.
  • the terminal device may also determine the absolute location information based on the relative location information and the reference location information.
  • the reference location information may be used to indicate the index of the reference location, which may be understood as the absolute index of the location of the reference resource. Therefore, referring to FIG. 11, after executing S1001, the present application may also execute:
  • the network device sends the third information, and correspondingly, the terminal device receives the third information.
  • the third information may be used to indicate the reference location information.
  • the embodiment of the present application does not limit the specific name of the third information.
  • the third information may be carried in one or more of RRC signaling, DCI or MAC CE.
  • the present application may further execute:
  • the network device sends the fourth information, and correspondingly, the terminal device receives the fourth information.
  • the fourth information is used to indicate the first sequence, or the fourth information can be used to indicate the phase of the first sequence.
  • the embodiment of the present application does not limit the specific name of the fourth information.
  • the fourth information can be carried in one or more of RRC signaling, DCI or MAC CE.
  • the first sequence can be used to generate a reference signal, so the first sequence can also be called a reference signal sequence.
  • the first sequence can be a ZC sequence, or the first sequence can also be other types of sequences, as long as it can be used to generate a reference signal, and the embodiment of the present application does not specifically limit this.
  • the first sequence can include M elements.
  • the present application may further execute:
  • the terminal device sends or receives a reference signal on a first reference signal resource, and correspondingly, the network device receives or sends a reference signal on the first reference signal resource.
  • the embodiment of the present application provides a communication device, which includes a module/unit/means for executing the method executed by the device in the above method embodiment.
  • the module/unit/means can be implemented by software, or by hardware, or the corresponding software can be implemented by hardware.
  • the functions of the modules of the apparatus 1200 are as follows:
  • the transceiver module 1202 is used to receive first information, where the first information is used to indicate a first relationship;
  • the processing module 1201 is used to determine position information based on the first relationship and a first sequence, the first sequence is used to generate a reference signal, the position information is used to indicate a position of a first reference signal resource, and the first reference signal resource is used to map the reference signal.
  • the functions of the modules of the apparatus 1200 are as follows:
  • the transceiver module 1202 is configured to send first information, where the first information is used to indicate a first relationship, the first relationship and a first sequence are used to determine position information, the first sequence is used to generate a reference signal, the position information is used to indicate a position of a first reference signal resource, and the first reference signal resource is used to map the reference signal;
  • the functions of the modules of the apparatus 1200 are as follows:
  • the transceiver module 1202 is configured to receive fifth information, where the fifth information is used to indicate a first parameter, where the first parameter and a D-order polynomial are used to determine location information, where the location information is used to indicate a location of a first reference signal resource, and where D is a positive integer;
  • the functions of the modules of the apparatus 1200 are as follows:
  • the transceiver module 1202 is used to send fifth information, where the fifth information is used to indicate a first parameter, the first parameter and a D-order polynomial are used to determine location information, the location information is used to indicate a location of a first reference signal resource, and D is a positive integer.
  • the above-mentioned device 1200 can have a variety of product forms. Several possible product forms are introduced below.
  • the communication device 1300 includes a processor 1310 and an interface circuit 1320, wherein the interface circuit 1320 is used to receive signals from other communication devices outside the communication device and transmit them to the processor 1310, or to send signals from the processor 1310 to other communication devices outside the communication device, and the processor 1310 is used to implement the method executed by any terminal device or network device in the above method embodiments through logic circuits or execution instructions.
  • the interface circuit 1320 is used to receive signals from other communication devices outside the communication device and transmit them to the processor 1310, or to send signals from the processor 1310 to other communication devices outside the communication device, and the processor 1310 is used to implement the method executed by any terminal device or network device in the above method embodiments through logic circuits or execution instructions.
  • the processor 1310 and the interface circuit 1320 are coupled to each other. It is understood that the interface circuit 1320 may be a transceiver or an input/output interface.
  • the communication device 1300 may further include a memory 1330 for storing instructions executed by the processor 1310 or storing input data required by the processor 1310 to execute instructions or storing data generated after the processor 1310 executes instructions.
  • the module implements the functions of the terminal device or the network device in the above-mentioned method embodiment.
  • the module receives information from other modules (such as a radio frequency module or an antenna) in the terminal device or the network device, and the information is sent by the second network element to the terminal device or the network device; or, the module sends information to other modules (such as a radio frequency module or an antenna) in the terminal device or the network device, and the information is sent by the terminal device or the network device to the third network element.
  • the module here can be a baseband chip of a terminal device or a network device, or it can be a DU or other module, and the DU here can be a DU under the open radio access network (O-RAN) architecture.
  • OF-RAN open radio access network
  • the processor mentioned in the embodiments of the present application can be implemented by hardware or by software.
  • the processor can be a logic circuit, an integrated circuit, etc.
  • the processor can be a general-purpose processor implemented by reading software code stored in a memory.
  • the processor may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.
  • CPU central processing unit
  • DSP digital signal processors
  • ASIC application-specific integrated circuits
  • FPGA field programmable gate arrays
  • a general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.
  • the memory mentioned in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories.
  • the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory.
  • the volatile memory may be a random access memory (RAM), which is used as an external cache.
  • RAM static random access memory
  • DRAM dynamic random access memory
  • SDRAM synchronous dynamic random access memory
  • SDRAM double data rate synchronous dynamic random access memory
  • Random access memory Double Data Eate SDRAM, DDR SDRAM
  • Enhanced SDRAM Enhanced SDRAM, ESDRAM
  • synchronous link dynamic random access memory Synchlink DRAM, SLDRAM
  • Direct Rambus RAM Direct Rambus RAM
  • the processor is a general-purpose processor, DSP, ASIC, FPGA or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, the memory (storage module) can be integrated into the processor.
  • an embodiment of the present application also provides a computer program product, including a computer program or instructions.
  • the computer program or instructions are executed by a processor, the method executed by any terminal device or network device in the above method embodiments is implemented.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente demande divulgue un procédé et un appareil de communication. Le procédé comprend les étapes suivantes : un dispositif terminal reçoit des premières informations, les premières informations étant utilisées pour indiquer une première relation ; et le dispositif terminal détermine des informations de position sur la base de la première relation et d'une première séquence, la première séquence étant utilisée pour générer un signal de référence, les informations de position étant utilisées pour indiquer la position d'une première ressource de signal de référence, et la première ressource de signal de référence étant utilisée pour mapper le signal de référence. Dans la présente demande, les informations de position utilisées pour indiquer la position de la première ressource de signal de référence et la première séquence utilisée pour générer le signal de référence satisfont la première relation, et un dispositif de réseau peut indiquer la position de la première ressource de signal de référence par rapport au dispositif terminal en indiquant indirectement la première relation ; pour des premières ressources de signal de référence qui sont agencées de manière non uniforme dans un domaine fréquentiel, la position de chaque ressource incluse dans les premières ressources de signal de référence n'a pas besoin d'être indiquée de manière séquentielle, ce qui permet de réduire le surdébit d'indication du dispositif de réseau pour indiquer la position de la première ressource de signal de référence.
PCT/CN2024/123766 2024-01-04 2024-10-09 Procédé et appareil de communication Pending WO2025145716A1 (fr)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018137223A1 (fr) * 2017-01-25 2018-08-02 华为技术有限公司 Procédé et dispositif permettant de transmettre un signal de référence, ainsi que procédé et dispositif permettant de recevoir un signal de référence
WO2018137222A1 (fr) * 2017-01-25 2018-08-02 华为技术有限公司 Procédé et appareil d'envoi de signal de référence, et procédé et appareil de réception de signal de référence
US20190089504A1 (en) * 2016-03-07 2019-03-21 Lg Electronics Inc. METHOD FOR TRANSMITTING DEMODULATION REFERENCE SIGNAL IN WIRELESS COMMUNICATION SYSTEM FOR SUPPORTING NARROWBAND IoT, AND DEVICE THEREFOR
CN109525379A (zh) * 2017-09-20 2019-03-26 维沃移动通信有限公司 参考信号传输处理方法、网络侧设备及用户终端

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20190089504A1 (en) * 2016-03-07 2019-03-21 Lg Electronics Inc. METHOD FOR TRANSMITTING DEMODULATION REFERENCE SIGNAL IN WIRELESS COMMUNICATION SYSTEM FOR SUPPORTING NARROWBAND IoT, AND DEVICE THEREFOR
WO2018137223A1 (fr) * 2017-01-25 2018-08-02 华为技术有限公司 Procédé et dispositif permettant de transmettre un signal de référence, ainsi que procédé et dispositif permettant de recevoir un signal de référence
WO2018137222A1 (fr) * 2017-01-25 2018-08-02 华为技术有限公司 Procédé et appareil d'envoi de signal de référence, et procédé et appareil de réception de signal de référence
CN109525379A (zh) * 2017-09-20 2019-03-26 维沃移动通信有限公司 参考信号传输处理方法、网络侧设备及用户终端

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