Communication method and communication apparatus

Abstract

The present application provides a communication method and a communication apparatus. The method comprises: receiving configuration information, wherein the configuration information is associated with a first group of communication apparatuses among Q groups of communication apparatuses, a first communication apparatus belongs to the first group of communication apparatuses, each group of communication apparatuses among the Q groups of communication apparatuses comprises at least one communication apparatus, and Q is an integer greater than or equal to 1; and sending a measurement result or a first signal, wherein the measurement result is determined on the basis of the configuration information, the measurement result comprises an MPC measurement result and / or a channel measurement result, and precoding information of the first signal is determined on the basis of the configuration information. The method provided in the present application can effectively reduce CSI acquisition latency and communication overhead.

Description

A communication method and a communication apparatus

[0001] The present application claims priority to the Chinese patent application No. 202411333674.3, filed on September 23, 2024, entitled "A communication method and a communication apparatus", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] Embodiments of the present application relate to the field of wireless communication technology, and more specifically, to a communication method and a communication apparatus. BACKGROUND

[0003] In a communication system, channel status information (CSI) is used to estimate the state of a channel. A typical CSI acquisition method is that a network device sends a reference signal to a terminal device, and the terminal device acquires CSI by measuring the reference signal. With the continuous improvement of communication requirements such as high rate, high reliability, and low delay, modern communication systems will continue to face challenges of greater capacity, wider coverage, and lower latency.

[0004] Therefore, there is an urgent need for a solution to reduce the acquisition delay and communication overhead of CSI. SUMMARY

[0005] The present application provides a communication method and a communication apparatus to reduce the acquisition delay and communication overhead of CSI.

[0006] In a first aspect, a method is provided, which can be applied to a communication apparatus. The communication apparatus can be a communication device (such as a terminal device), or the communication apparatus can be a component (such as a chip or a chip system or a circuit or a communication module) of a communication device. For ease of description, the following will mainly take a first communication apparatus as an example for description.

[0007] The method includes receiving configuration information associated with a first group of communication apparatuses in Q groups of communication apparatuses, the first communication apparatus belonging to the first group of communication apparatuses, each group of communication apparatuses in the Q groups of communication apparatuses including at least one communication apparatus, Q being an integer greater than 1 or equal to 1; and transmitting a measurement result or a first signal, wherein the measurement result is determined based on the configuration information, the measurement result including a measurement result of a multipath component (MPC) and / or a channel measurement result, and precoding information of the first signal being determined based on the configuration information.

[0008] Based on the above scheme, the first communication device determines the measurement result and the first signal according to the configuration information, so that the second communication device can not send the reference signal, and further, the first communication device sends the measurement result or the first signal to the second communication device, so that the second communication device can determine the CSI according to the measurement result or the first signal, thereby reducing the communication overhead and the CSI acquisition delay.

[0009] With reference to the first aspect, in some implementations of the first aspect, the Q groups of communication devices are determined based on at least one of the following parameters: the positions of the communication devices, the MPC information of the communication devices, and the channels of the communication devices.

[0010] Based on the above scheme, the multiple communication devices are grouped according to the positions, the MPC information, and the channels of the communication devices, so that the communication devices in one group can be associated with the same first information.

[0011] With reference to the first aspect, in some implementations of the first aspect, the configuration information includes one or more of the following: the identification of the first group of communication devices, the model parameters corresponding to the first group of communication devices, and the reference channels corresponding to the first group of communication devices.

[0012] Based on the above scheme, the first communication device determines the measurement result or the first signal according to the configuration information, and since the configuration information is associated with the grouping result of the communication devices and the traffic distribution, the CSI is more suitable for the specific traffic distribution scenario through this way.

[0013] With reference to the first aspect, in some implementations of the first aspect, the method further includes: receiving first indication information, the first indication information indicating Q first information corresponding to Q groups of communication devices; and sending second indication information, the second indication information indicating the first group of communication devices that satisfy a first preset condition.

[0014] Based on the above scheme, the first communication device receives the first indication information before receiving the configuration information, determines the group of communication devices (i.e., the first group of communication devices) in which the first communication device is located from the Q groups of communication devices according to the first preset condition, and reports the first group of communication devices, thereby obtaining the configuration information.

[0015] With reference to the first aspect, in some implementations of the first aspect, the first preset condition includes at least one of the following: the deviation between the MPC information of the centroid of the first group of communication devices and the MPC information of the first communication device is less than or equal to a first threshold; the deviation between the position of the centroid of the first group of communication devices and the position of the first communication device is less than or equal to a second threshold; and the measurement result of the reference signal associated with the first group of communication devices satisfies a first condition.

[0016] In some implementations of the first aspect, the first indication information is further used to indicate the first preset condition.

[0017] According to the above scheme, the first communication device determines a suitable group for itself according to the first preset condition, so that the communication process is more flexible and efficient.

[0018] In some implementations of the first aspect, each of the Q first information includes at least one of the following: an identifier of the group of communication devices corresponding to the first information, MPC information of the group of communication devices corresponding to the first information, a centroid position of the group of communication devices corresponding to the first information, and a measurement result of a reference signal associated with the group of communication devices corresponding to the first information.

[0019] According to the above scheme, the first communication device can select a suitable group for itself based on the Q first information.

[0020] In some implementations of the first aspect, the method further includes: sending capability indication information, the capability indication information indicating whether the first communication device supports determining the measurement result or the first signal based on the configuration information.

[0021] According to the above scheme, the first communication device can provide its capability information to other communication devices (such as the second communication device) to indicate whether to determine the measurement result or the first signal based on the configuration information, so that the second communication device can select whether to use the method provided in the present application according to the capability of the first communication device.

[0022] In a second aspect, a method is provided, which can be applied to a communication device, i.e., the communication device can be a communication equipment (such as a network equipment), or the communication device can be a component (such as a chip or a chip system or a circuit or a communication module) of the communication equipment. For ease of description, the following mainly takes the second communication device as an example for description.

[0023] The method includes: sending configuration information, the configuration information being associated with a first group of communication devices in Q groups of communication devices, the first group of communication devices including the first communication device, each group of communication devices in the Q groups of communication devices including at least one communication device, Q being an integer greater than 1 or equal to 1; and receiving a measurement result or a first signal, wherein the measurement result is determined based on the configuration information, the measurement result including a measurement result of MPC and / or a channel measurement result, and precoding information of the first signal being determined based on the configuration information.

[0024] In some implementations of the second aspect, the Q groups of communication devices are determined based on at least one of the following parameters: a position of the communication device, MPC information of the communication device, and a channel of the communication device.

[0025] In some implementations of the second aspect, in combination with the second aspect, the configuration information comprises one or more of: an identity of the first group of communication devices, model parameters corresponding to the first group of communication devices, reference channels corresponding to the first group of communication devices.

[0026] In some implementations of the second aspect, in combination with the second aspect, the method further comprises: sending first indication information, the first indication information indicating Q first information corresponding to Q groups of communication devices; and receiving second indication information, the second indication information indicating the first group of communication devices that satisfy a first preset condition.

[0027] In some implementations of the second aspect, in combination with the second aspect, the first preset condition comprises at least one of: a deviation between a center of mass MPC information of the first group of communication devices and an MPC information of the first communication device being less than or equal to a first threshold; a deviation between a center of mass position of the first group of communication devices and a position of the first communication device being less than or equal to a second threshold; a measurement result of a reference signal associated with the first group of communication devices satisfying a first condition.

[0028] In some implementations of the second aspect, in combination with the second aspect, the first indication information is further used to indicate the first preset condition.

[0029] In some implementations of the second aspect, in combination with the second aspect, each of the Q first information comprises at least one of: an identity of a group of communication devices corresponding to the first information, an MPC information of the group of communication devices corresponding to the first information, a center of mass position of the group of communication devices corresponding to the first information, a measurement result of a reference signal associated with the group of communication devices corresponding to the first information.

[0030] In some implementations of the second aspect, in combination with the second aspect, the method further comprises: receiving capability indication information, the capability indication information indicating whether the first communication device supports determining a measurement result or a first signal based on the configuration information.

[0031] The beneficial effects of the second aspect and possible implementations can refer to the description related to the first aspect, which will not be repeated here.

[0032] In a third aspect, a communication device is provided, which is configured to perform the method provided in any of the first aspect or the second aspect. Specifically, the device can include units and / or modules for performing the method provided in any of the first aspect or the second aspect, such as a processing unit and / or a communication unit.

[0033] In an implementation, the apparatus is a communication device (e.g., a terminal device, or a network device). When the apparatus is a communication device, the communication unit can be a transceiver, or an input / output interface; the processing unit can be at least one processor. Optionally, the transceiver can be a transceiver circuit. Optionally, the input / output interface can be an input / output circuit.

[0034] In another implementation, the apparatus is a chip, chip system or circuit for use in a communication device. When the apparatus is a chip, chip system or circuit for use in a communication device, the communication unit can be an input / output interface, interface circuit, output circuit, input circuit, pin or related circuitry, etc. on the chip, chip system or circuit; the processing unit can be at least one processor, processing circuit or logic circuit, etc.

[0035] In a fourth aspect, a communication apparatus is provided, which comprises: a memory, configured to store a program; and at least one processor, configured to execute the computer program or instructions stored in the memory, so as to perform the method provided by any of the implementation modes of the method in the first aspect or the second aspect.

[0036] In an implementation, the apparatus is a communication device (e.g., a terminal device, or a network device).

[0037] In another implementation, the apparatus is a chip, chip system or circuit for use in a communication device.

[0038] In a fifth aspect, a processor is provided, which is configured to perform the method provided by any of the aspects.

[0039] For the sending and obtaining / receiving operations involved in the processor, if there is no special description, or if it does not contradict the actual role or internal logic in the related description, it can be understood as the processor output and input operations, or the sending and receiving operations performed by the radio frequency circuit and the antenna, and the present application does not limit this.

[0040] In a sixth aspect, a computer readable storage medium is provided, which is used for program code executed by a device, and the program code comprises instructions for performing the method provided by any of the implementation modes of the method in the first aspect or the second aspect.

[0041] In a seventh aspect, a computer program product comprising instructions which, when executed on a processor of a computer, cause the computer to perform the method provided by any of the implementation modes of the method in the first aspect or the second aspect.

[0042] In an eighth aspect, a chip is provided, which includes a processor and a communication interface. The processor reads instructions stored on a memory through the communication interface, and executes the method provided in any of the implementation manners of the first aspect or the second aspect.

[0043] Optionally, as an implementation manner, the chip further includes a memory, and the memory stores a computer program or instructions. The processor is configured to execute the computer program or instructions stored on the memory, and when the computer program or instructions are executed, the processor is configured to execute the method provided in any of the implementation manners of the first aspect or the second aspect.

[0044] In a ninth aspect, a communication system is provided, which includes a first communication device and a second communication device. The first communication device is configured to execute the method provided in any of the implementation manners of the first aspect, and the second communication device is configured to execute the method provided in any of the implementation manners of the second aspect.

[0045] The beneficial effects of the third aspect to the ninth aspect and the possible implementation manners can refer to the description related to the first aspect, and will not be described here. BRIEF DESCRIPTION OF DRAWINGS

[0046] FIG. 1 is a schematic diagram of a wireless communication system suitable for embodiments of the present application.

[0047] FIG. 2 is a schematic diagram of an ORAN system suitable for embodiments of the present application.

[0048] FIG. 3 is a schematic diagram of an access network device suitable for embodiments of the present application.

[0049] FIG. 4 is a schematic diagram of a communication method 400 provided by embodiments of the present application.

[0050] FIG. 5 is a schematic diagram of grouping terminal devices provided by embodiments of the present application.

[0051] FIG. 6 is a schematic diagram of a centroid channel provided by embodiments of the present application.

[0052] FIG. 7 is a schematic diagram of determining an antenna port and a frequency domain position of a reference signal according to a reference channel provided by embodiments of the present application.

[0053] FIG. 8 is a schematic diagram of a communication device 800 provided by embodiments of the present application.

[0054] FIG. 9 is a schematic diagram of another communication device 900 provided by embodiments of the present application.

[0055] FIG. 10 is a schematic block diagram of a chip system 1000 provided by embodiments of the present application. DETAILED DESCRIPTION

[0056] The technical solutions in the present application will be described below with reference to the drawings.

[0057] Before introducing the solutions of the present application, the following points are explained.

[0058] (1) In the present application, "indication" can include direct indication, indirect indication, explicit indication, implicit indication, etc. When describing that certain indication information indicates A, it can be understood that the indication information carries A, carries an identifier of A, carries B having an association relationship with A, carries an identifier of B having an association relationship with A, etc. In other words, if the receiving side of certain indication information can determine A according to the indication information, it can be described that the indication information indicates A, and the specific determination manner is not limited. When it is understood that the indication information carries A, "indication" can be replaced by "includes", and at this time, similar to the expression "sending / receiving indication information, the indication information indicates A", it can be replaced by "sending / receiving A".

[0059] In the present application, the information indicated by the indication information is referred to as to-be-indicated information. In the specific implementation process, there are many ways to indicate the to-be-indicated information, for example but not limited to, the to-be-indicated information can be directly indicated, such as the to-be-indicated information itself or an index of the to-be-indicated information, etc. The to-be-indicated information can also be indirectly indicated by indicating other information, where the other information has an association relationship with the to-be-indicated information. The to-be-indicated information can also be only indicated in part, and the other part of the to-be-indicated information is known or agreed in advance. For example, the indication of a specific information can also be realized by means of the arrangement order of each information agreed in advance (for example, a protocol stipulates), thereby reducing the indication overhead to a certain extent. In addition, the to-be-indicated information can be sent as a whole, or can be sent separately into multiple sub-information, and the sending period and / or sending time of these sub-information can be the same or different.

[0060] (2) In the present application, the expression " / " is used to represent that the objects before and after the association are in an "or" relationship; for example, A / B can represent A or B. The expression "and / or" is used to represent that the objects before and after the association can be in an association relationship of and or or; for example, A and / or B can represent the following cases: A exists alone, B exists alone, A and B exist together, wherein A and B can be single or multiple. "At least one of the following" or similar expressions are used to represent any combination of the listed items; for example, at least one of A, B and (or) C can represent the following cases: A exists alone, B exists alone, C exists alone, A and B exist together, B and C exist together, A and C exist together, A, B and C exist together, wherein A, B and C can be single or multiple.

[0061] (3) In this application, "send" and "receive" indicate the direction of signal transmission. For example, "send information to XX" can be understood as the destination of the information being XX, which may include direct transmission via the air interface or indirect transmission by other units or modules via the air interface. "Receive information from YY" can be understood as the source of the information being YY, which may include direct reception from YY via the air interface or indirect reception from YY by other units or modules via the air interface. "Send" can also be understood as the "output" of the chip interface, and "receive" can also be understood as the "input" of the chip interface. In other words, sending and receiving can occur between devices, such as between network devices and terminal devices, or within a device, such as between components, modules, chips, software modules, or hardware modules within the device via a bus, wiring, or interface.

[0062] (4) In the various embodiments of this application, unless otherwise specified or in case of logical conflict, the terms and / or descriptions of different embodiments are consistent and can be referenced by each other. The technical features of different embodiments can be combined to form new embodiments according to their inherent logical relationship.

[0063] (5) In this application, "first," "second," and "#1," "#2," and "#A" are merely for descriptive convenience and are used to distinguish objects, and are not intended to limit the scope of the embodiments of this application. They are not used to describe the order or sequence of features. It should be understood that such described objects can be interchanged where appropriate in order to describe solutions other than those in the embodiments of this application.

[0064] (6) In this application, "predefined" can mean a standard protocol predefined, or it can mean a pre-agreed or pre-negotiated agreement between devices. Here, "protocol" can refer to a standard protocol in the field of communications, for example, it may include fourth-generation (4G) protocols. th Generation 4G network, fifth generation (5G) network th This application does not limit the scope to network protocols such as 5G (generation, 5G), New Radio (NR), 5.5G, and related protocols applied in future communication networks.

[0065] (7) In this application, the words “exemplary,” “for example,” etc., are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as an “example” in this application should not be construed as being more preferred or advantageous than other embodiments or designs. Rather, the term “example” is used to present concepts in a specific manner.

[0066] (8) In this application, "of", "corresponding", "relevant", "corresponding" and "associated" can be used interchangeably at times. It should be noted that the meanings expressed are consistent when the distinction is not emphasized.

[0067] (9) In this application, "identify", "index", "number" and "serial number" can be used interchangeably at times. It should be noted that the meanings expressed are consistent when the distinction is not emphasized.

[0068] (10) In this application, "when", "if" and "if" all refer to the device making corresponding processing under certain objective conditions, not limited to time, and does not require the device to have a judgment action when implemented, nor does it mean that there are other limitations.

[0069] (11) In this application, many places involve the transformation of matrix. For the convenience of understanding, the following unified description is given. The upper subscript T represents the transpose, such as A T represents the transpose of matrix (or vector) A; the upper subscript * represents the conjugate, such as A * represents the conjugate of matrix (or vector) A; the upper subscript H represents the conjugate transpose, such as A H represents the conjugate transpose of matrix (or vector) A. In the following, in order to simplify, the same or similar conditions are omitted.

[0070] Next, the communication system applicable to the present application is introduced.

[0071] The technical solutions provided in the present application can be applied to various communication systems, for example, a 5th generation (5G) or new radio (NR) system, a long term evolution (LTE) system, an LTE frequency division duplex (FDD) system, an LTE time division duplex (TDD) system, and the like. The technical solutions provided in the present application can also be applied to future communication networks. The technical solutions provided in the present application can also be applied to device to device (D2D) communication, vehicle-to-everything (V2X) communication, machine to machine (M2M) communication, machine type communication (MTC), and internet of things (IoT) communication systems. The technical solutions provided in the present application can also be applied to non-terrestrial network (NTN) systems such as inter-satellite communication and satellite communication.

[0072] As an example, a satellite communication system includes a satellite base station and a terminal device. The satellite base station provides communication services for the terminal device. The satellite base station can also communicate with a base station. The satellite can act as a base station or a terminal device. The satellite can refer to a drone, a hot air balloon, a low earth orbit satellite, a medium earth orbit satellite, a high earth orbit satellite, and the like. The satellite can also refer to a non-ground base station or a non-ground device, and the like.

[0073] As an example, V2X communication can include vehicle-to-vehicle (V2V) communication, vehicle-to-infrastructure (V2I) communication, vehicle-to-pedestrian (V2P) communication, and vehicle-to-network (V2N) communication.

[0074] A device in a communication system can send a signal to another device or receive a signal from another device. The signal can include information, signaling, or data, and the like. The device can also be replaced by an entity, a network entity, a communication device, a communication module, a node, a communication node, and the like. The device is described as an example in the embodiments of the present application.

[0075] The terminal device in the embodiments of the present application can be a device or module with corresponding communication functions for accessing the above-mentioned communication system. The terminal device can include various devices with wireless communication functions, which can be used to connect people, things, machines, etc. The terminal device can be widely used in various scenarios, such as cellular communication, D2D, V2X, end-to-end, M2M, MTC, IoT, virtual reality (VR), augmented reality (AR), industrial control, autonomous driving, remote medical treatment, smart power grid, smart furniture, smart office, smart wear, smart traffic, smart city UAV, robot, remote sensing, passive sensing, positioning, navigation and tracking, autonomous delivery, etc. The terminal device can be a terminal in any of the above scenarios, such as an MTC terminal, an IoT terminal, etc. The terminal device can be a user equipment (UE) of the 3rd generation partnership project (3GPP) standard, a terminal, a fixed device, a mobile station device or a mobile device, a subscriber unit, a handset, a vehicle-mounted device, a wearable device, a cellular phone, a smart phone, a session initiation protocol (SIP) phone, a wireless data card, a personal digital assistant (PDA), a computer, a tablet computer, a notebook computer, a wireless modem, a handset, a laptop computer, a computer with wireless transceiver function, a smart book, a vehicle, a satellite, a global positioning system (GPS) device, a target tracking device, an aircraft (such as a drone, a helicopter, a multi-copter, a quad-copter, or an airplane, etc.), a ship, a remote control device, a smart home device, an industrial device, a transport vehicle with wireless communication function, a communication module, a road side unit (RSU) with terminal function, or a device built-in the above-mentioned device (such as a communication module, a modem or a chip in the above-mentioned device, etc.), or other processing devices connected to the wireless modem.

[0076] It should be understood that in some scenarios, the UE can also be used as a base station. For example, the UE can act as a scheduling entity that provides sidelink signals between UEs in V2X, D2D or end-to-end scenarios, etc.

[0077] In the embodiments of the present application, the apparatus for implementing the function of the terminal device, i.e., the terminal apparatus, can be a terminal device or an apparatus capable of supporting the terminal device to implement the function, such as a chip system or a chip or a circuit or a communication module (i.e., a communication module performing a communication function), which can be installed in the terminal device. In the embodiments of the present application, the chip system can be composed of a chip or can include a chip and other discrete devices. In addition, program instructions for performing corresponding communication functions can also be configured in the apparatus.

[0078] The network device in the embodiments of the present application can be a device or a module with a corresponding communication function. The network device can be a device for communicating with the terminal device, and the network device can also be referred to as an access network device or a radio access network device, such as a network device, which can be a base station. The network device in the embodiments of the present application can refer to a radio access network (RAN) node (or device) for accessing the terminal device to a wireless network. The base station can broadly cover various names in the following or be replaced by the following names, such as: Node B (NodeB), evolved Node B (eNB), next generation Node B (gNB), relay station, access point, transmitting and receiving point (TRP), transmission point, primary station, secondary station, motor slide retainer (MSR) node, home base station, network controller, access node, wireless node, access point (AP), transmission node, transceiver node, baseband unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), central unit (CU), distributed unit (DU), positioning node, etc. The base station can be a macro base station, a micro base station, a relay node, a donor node or the like, or a combination thereof. The base station can also refer to a communication module, a modem or a chip for being arranged in the foregoing devices or apparatuses. The base station can also be a mobile switching center and a device assuming a base station function in D2D, V2X, M2M communication, a device assuming a base station function in a future communication system, etc. The base station can support networks of the same or different access technologies. The embodiments of the present application do not limit the specific technologies and specific device forms adopted by the network device.

[0079] A base station can be fixed, or mobile. For example, a helicopter or drone can be configured to act as a mobile base station, with one or more cells moving according to the location of the mobile base station. In other examples, a helicopter or drone can be configured to act as a device that communicates with another base station.

[0080] In some deployments, the network device mentioned in embodiments of the present application can be a device including a CU, or a DU, or a device including a CU and a DU, or a control plane CU node (central unit-control plane (CU-CP)) and a user plane CU node (central unit-user plane (CU-UP)), and a DU node.

[0081] In some deployments, a plurality of RAN nodes cooperate to assist a terminal device to implement wireless access, and different RAN nodes respectively implement part of the functions of a base station. For example, a RAN node can be a CU, a DU, a CU-CP, a CU-UP, or a radio unit (RU), etc. The CU and the DU can be separately arranged, or can also be included in the same network element, such as a BBU. The RU can be included in a radio frequency device or a radio frequency unit, such as an RRU, an AAU, or an RRH.

[0082] In different systems, the CU (or CU-CP and CU-UP), DU, or RU can also have different names, but those skilled in the art can understand their meanings. For example, the wireless access network can also be an open radio access network (O-RAN or ORAN) architecture, in which the CU can also be referred to as an open CU (O-CU), the DU can also be referred to as an open DU (O-DU), the CU-CP can also be referred to as an open CU-CP (O-CU-CP), the CU-UP can also be referred to as an open CU-UP (O-CU-UP), and the RU can also be referred to as an open RU (O-RU). Any of the CU (or CU-CP, CU-UP), DU, and RU in the present application can be implemented by a software module, a hardware module, or a combination of a software module and a hardware module.

[0083] In an embodiment of the present application, the apparatus for implementing the function of the network device can be a network device, or can be an apparatus capable of supporting the network device to implement the function, such as a chip system or a chip or a circuit or a communication module (i.e., a communication module performing a communication function), which can be installed in the network device. In an embodiment of the present application, the chip system can be composed of a chip, or can include a chip and other discrete devices. In addition, program instructions for performing corresponding communication functions can also be configured in the apparatus. In an embodiment of the present application, only the apparatus for implementing the function of the network device is taken as an example of the network device, and the scheme of the embodiment of the present application is not limited.

[0084] The network device and the terminal device can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; can also be deployed on the water surface; and can also be deployed on airplanes, balloons and satellites in the air. The scenario in which the network device and the terminal device are located is not limited in the embodiment of the present application.

[0085] Referring to FIG. 1, as an example, FIG. 1 is a schematic diagram of a wireless communication system suitable for an embodiment of the present application. As shown in FIG. 1, the wireless communication system includes a radio access network 100. The radio access network 100 can be a future or higher version radio access network, or a conventional (for example, 5G, 4G, 3G or 2G) radio access network. One or more terminal devices (120a-120j, collectively referred to as 120) can be connected to each other or connected to one or more network devices (110a, 110b, collectively referred to as 110) in the radio access network 100. The network elements in the wireless communication system are connected through an interface (such as NG, Xn), or connected through an air interface.

[0086] In the communication between the network device and the terminal device, the network device can manage one or more cells, and each cell can include at least one terminal device. The cell can be understood as an area within the coverage range of the wireless signal of the network device.

[0087] FIG. 1 is only a schematic diagram, and the wireless communication system can also include other devices, such as core network devices, wireless relay devices and / or wireless backhaul devices, etc., which are not shown in FIG. 1.

[0088] Referring to FIG. 2, as an example, FIG. 2 is a schematic diagram of an ORAN system suitable for an embodiment of the present application. The ORAN system includes a core network, an access network device and a UE. As an example, the ORAN system can also include other components in addition to the components shown in FIG. 2, which are not limited in the present application.

[0089] The access network device can communicate with a core network (CN) through a backhaul. The access network device can communicate with a UE through an air interface. Specifically, a BBU in the access network device communicates with the core network through the backhaul. An RU in the access network device communicates with at least one UE through the air interface. The BBU communicates with at least one RU through a fronthaul, and the BBU and the RU can be co-located or not. The BBU includes at least one CU and at least one DU, and the CU and the DU can communicate through at least one midhaul. The BBU includes at least one CU and at least one DU, and the CU and the DU can communicate through at least one midhaul.

[0090] Referring to FIG. 3, as an example, FIG. 3 is a schematic diagram of an access network device suitable for embodiments of the present application.

[0091] Optionally, the access network device includes a CU. The CU is a logical node that carries the radio resource control (RRC), service data adaptation protocol (SDAP) layer, packet data convergence protocol (PDCP) layer, and other control functions of the access network device. The CU can be connected to network nodes such as core networks through some interfaces. For example, the E2 interface. The CU can have part of the functions of the core network. The CU (e.g., the PDCP layer and / or higher layers of the CU) is connected to the DU (e.g., the radio link control (RLC) layer and lower layers of the DU) through some interfaces. For example, the F1 interface. Optionally, the F1 interface can provide control plane (C-Plane) and user plane (U-Plane) functions (e.g., interface management, system information management, UE context management, RRC message transmission, etc.). F1AP is the application protocol of the F1 interface, which defines the signaling procedures of F1 in some examples. The F1 interface supports control plane F1-C and user plane F1-U.

[0092] As an example, the CU includes a CU-CP and a CU-UP. Among them, the CU-CP is a logical node carrying the control plane part of PDCP (PDCP-C) layer of RRC layer and packet data convergence protocol layer, used to implement the control plane function of the CU. The CU-CP can interact with a network element in the core network for implementing the control plane function. The network element in the core network for implementing the control plane function can be an access and mobility function network element, such as an access and mobility management (AMF) in a 5G system. The AMF network element is used to be responsible for the mobility management in the mobile network, such as location update of the terminal device, registration network of the terminal device, handover of the terminal device, etc. The CU-UP is a logical node carrying the user plane part of PDCP (PDCP-U) layer of SDAP layer and packet data convergence protocol layer, used to implement the user plane function of the CU. The CU-UP can interact with a network element in the core network for implementing the user plane function. The network element in the core network for implementing the user plane function, for example, a user plane function (UPF) in a 5G system, is used to be responsible for the forwarding and receiving of data in the terminal device. The above configuration of the CU and the DU is only an example, and in actual application, the CU and the DU can also be configured to have functions according to needs. For example, the CU or the DU can be configured to have more functions of protocol layers, or the CU or the DU can be configured to have partial processing functions of protocol layers. For example, part of the functions of the RLC layer and the functions of the protocol layers above the RLC layer are arranged in the CU, and the remaining functions of the RLC layer and the functions of the protocol layers below the RLC layer are arranged in the DU. For another example, the functions of the CU or the DU can be divided according to the service type or other system requirements, for example, according to the delay, the functions that need to meet the delay requirement are arranged in the DU, and the functions that do not need to meet the delay requirement are arranged in the CU.

[0093] Optionally, the access network device includes a DU. As shown in FIG. 3, the DU is a logical node carrying an RLC layer, a medium access control (MAC) layer, a higher physical (Higher PHY) layer and other functions. In some examples, the DU can control at least one RU. The DU is connected to the RU through some interfaces, which can be a front interface. In some examples, the Higher PHY layer includes part of the PHY layer processing, such as forward error correction (FEC) encoding and decoding, scrambling, modulation and demodulation, etc.

[0094] Optionally, the access network device includes a RU. As shown in FIG. 3, the RU is a logical node that carries lower physical layer (Lower PHY) and radio frequency (RF) processing. In some examples, the RU can be a 3GPP transmission reception point (TRP) or a remote radio head (RRH) or other similar functional entity. In some examples, the Low-PHY includes portions of PHY processing such as fast fourier transform (FFT), inverse fast fourier transformation (IFFT), digital beamforming and filtering, and other processing functions. The RU communicates with one or more UEs over a wireless link.

[0095] The DU and the RU can be co-located or not co-located. The DU and the RU exchange control plane information and user plane information via a lower-layer split-CUS-plane (LLS-CUS) interface over a fronthaul link. The LLS-CUS can include a lower-layer split control (LLS-C) interface and a lower-layer split user (LLS-U) interface that provide control plane (C-Plane) and user plane (U-Plane), respectively. In some examples, the control plane (C-Plane) refers to real-time control between the DU and the RU. The DU and the RU have a LLS-M interface of the fronthaul link to exchange management information, and the management plane (M-Plane) refers to non-real-time management operations between the DU and the RU.

[0096] The DU and the RU can cooperate to collectively implement the functionality of the PHY layer. One DU can be connected to one or more RUs. The functionality of the DU and the RU can be configured in multiple ways according to design. For example, the DU is configured to implement baseband functionality, and the RU is configured to implement intermediate RF functionality. For another example, the DU is configured to implement high-layer functionality in the PHY layer, and the RU is configured to implement low-layer functionality in the PHY layer or to implement the low-layer functionality and RF functionality. The high-layer functionality in the PHY layer can include a portion of the functionality of the PHY layer that is closer to the MAC layer, and the low-layer functionality in the PHY layer can include another portion of the functionality of the PHY layer that is closer to the intermediate RF side.

[0097] FIGS. 1-3 are illustrative examples, and embodiments of the present application are not limited thereto.

[0098] For the convenience of understanding the embodiments of the present application, the terms involved in the present application are briefly explained.

[0099] In order to better understand the technical solutions of the present application, some related technologies involved in the technical solutions of the present application are introduced.

[0100] 1. Multi-input multi-output (MIMO) technology: using the resources of spatial dimension, the signal can obtain array gain, multiplexing and diversity gain and interference cancellation gain in space without increasing the system bandwidth, which can multiply the capacity and spectral efficiency of the communication system. For example, in the LTE system, the MIMO system can support up to 8 layers of transmission at the transmitting end and the receiving end by using multiple antennas.

[0101] 2. Reference signal (RS): refers to a physical signal carrying a sequence for realizing a specific function. Specifically, the reference signal is a physical signal generated by mapping a specific sequence to the corresponding resource according to a pre-designed resource mapping manner. The reference signal can also be referred to as a pilot, a reference sequence, a reference signal, etc.

[0102] In this application, the reference signal involved can be any of the following as an example: channel state information reference signal (CSI-RS), sounding reference signal (SRS), demodulation reference signal (DMRS), phase tracking reference signal (PT-RS), cell reference signal (CRS), etc. Among them, the DMRS can be used for demodulation of the physical downlink shared channel (PDSCH) or the physical uplink shared channel (PUSCH). The CSI-RS can be used for channel information measurement and implementation of reporting of channel state information (CSI), which includes at least one of the following: precoding matrix indicator (PMI), rank indication (RI), and channel quality indicator (CQI).

[0103] It should be understood that the reference signals listed above are only examples and should not constitute any limitation on the present application. The present application does not exclude the possibility of defining other reference signals in future protocols to achieve the same or similar functions.

[0104] 3. Channel state information (CSI): information that can reflect the characteristics of the channel and the quality of the channel.

[0105] The CSI can represent the characteristics of the channel, that is, the influence of the signal received by the transmitter through the channel to the receiver, such as scattering, fading, and energy attenuation with distance. This information enables data transmission to adapt to the environment of the channel, thereby achieving high bit rate and reliable communication in a multi-antenna system.

[0106] The current typical CSI acquisition method has the problems of large indication overhead and long time delay. The present application proposes a method in which the network device indicates configuration information to the terminal device, the configuration information being associated with terminal device grouping results and service distribution, thereby reducing the communication overhead and time delay of CSI acquisition while making the CSI more suitable for specific service distribution scenarios.

[0107] The method provided by the embodiments of the present application will be described in detail below with reference to the drawings. The embodiments provided by the present application can be applied to the scenario shown in the above figures, without limitation. In addition, the terms involved below can refer to the previous explanations, which will not be repeated hereinafter.

[0108] In the following embodiments, mainly taking the terminal device (an example of the first communication apparatus) and the network device (an example of the second communication apparatus) as examples for illustration. The terminal device can also be replaced by a component of the terminal device (an example of the first communication apparatus), such as a chip or a chip system or a circuit or a communication module. The network device can also be replaced by a component of the network device (an example of the second communication apparatus), such as a chip or a chip system or a circuit or a communication module. In addition, the steps described below as executed by a single execution subject can also be divided into being executed by multiple execution subjects, which can be logically and / or physically separated.

[0109] In the following embodiments, the channel (such as the reference channel, the target channel) mentioned multiple times can be a channel corresponding to a frequency domain unit, or a channel corresponding to a time unit. A time unit can be a symbol, or an orthogonal frequency division multiplexing (OFDM) symbol, or a mini-slot, or a slot, or a partial slot, or a subframe, or a frame, etc. A frequency domain unit can be a resource block (RB), a subcarrier, a resource block group (RBG), a predefined subband, a precoding resource block group (PRG), a bandwidth part (BWP), a resource element (RE) (also referred to as a resource unit or a resource particle), a carrier, a serving cell.

[0110] Referring to FIG. 4, FIG. 4 is a schematic diagram of a communication method 400 provided by an embodiment of the present application. The method 400 shown in FIG. 4 can include the following steps.

[0111] S401, the network device sends first indication information, and correspondingly, the terminal device receives the first indication information.

[0112] The first indication information indicates Q first information, Q is an integer greater than 1.

[0113] The first indication information indicates Q first information, and the Q first information corresponds to Q groups of terminal devices (or Q cluster terminal devices, that is, an example of Q groups of communication devices) in a one-to-one manner.

[0114] The following describes the Q groups of terminal devices.

[0115] Specifically, the network device groups (or clusters) the plurality of terminal devices to obtain Q groups of terminal devices (or Q cluster communication devices), each group of terminal devices in the Q groups of terminal devices includes one or more terminal devices, the terminal devices included in each group of terminal devices are different, and each group of terminal devices is associated with a first information, or the terminal devices included in the group of terminal devices are associated with the same first information. The number of terminal devices included in each group of terminal devices in the Q groups of terminal devices can be the same or different, which is not limited. It can be understood that when a group of terminal devices includes one terminal device, the terminal device group can also be referred to as a terminal device.

[0116] The plurality of terminal devices are grouped, which can also be replaced by: the plurality of target channels are grouped (or clustered) to obtain Q groups of channels (or Q cluster channels, or Q clusters), each group of channels in the Q groups of channels includes one or more target channels, the target channels included in each group of channels are different, and each group of channels corresponds to a reference channel.

[0117] In an embodiment of the present application, the reference channel is relative to the target channel. The target channel, which can also be referred to as a channel or a MIMO channel, can represent a channel carrying data when transmitting data, or a channel where the terminal device is located, or a channel where the data is located, or a transmission resource included in the data. The reference channel can represent a channel similar to the target channel. When the terminal device where the target channel is located transmits data, because the reference channel and the target channel have certain similarity, the terminal device where the target channel is located can perform some operations based on the reference channel, such as CSI acquisition, auxiliary demodulation of data, etc. Assuming that H1 is the reference channel and H2 is the target channel, as an example, the reference channel H1 and the target channel H2 can be at least one of the following: two channels similar in space (or space domain), two channels similar in time domain, and two channels similar in frequency domain. Assuming that the reference channel corresponding to a group of terminal devices is H A , as an example, the H Aa centroid channel of the one or more target channels, wherein the centroid channel of the one or more target channels refers to determining a channel (for example, denoted as channel #1) from a channel set (for example, denoted as channel set #1, and the channel set #1 includes the one or more channels) under the condition of satisfying spatial consistency, so that the channel #1 has the highest average similarity with the one or more target channels, and the embodiment of the present application does not limit the measurement criterion of the similarity, for example, the measurement criterion of the similarity is the cosine similarity between the channel #1 and the one or more target channels. It is assumed that H centroid is the centroid channel, then wherein H #2 belongs to the channel set #1, that is, H #1 ∈{H a ,H b ,…}, H n1 characterizes an nth1 target channel in the one or more target channels (denoted as N target channels), cs(H #1 ,H n1 ) characterizes the cosine similarity of H #1 and H n1 , and argmax() characterizes the maximum value.

[0118] The embodiment of the present application mainly takes the target channel and the reference channel as an example for description, and the names of the target channel and the reference channel do not limit the protection scope of the embodiment of the present application.

[0119] Taking the target channel and the reference channel as an example, for example, the grouping operation of the network device can be represented as: f(H1, H2, H3, H4, …, H k )={H A ,H B ,H C}, wherein f(*) represents a grouping algorithm; H i (i=1, 2, …, k) represents a target channel; H A , H B , H C represent reference channels associated with each group of terminal devices. The grouping algorithm is not limited, for example, it can be a clustering algorithm, such as an agglomerative hierarchical clustering (AHC), a Kmeans algorithm, etc.

[0120] The grouping operation of the network device is introduced below in combination with FIG. 5.

[0121] Referring to FIG. 5, as an example, FIG. 5 is a schematic diagram of grouping terminal devices according to an embodiment of the present application. As shown in FIG. 5, it is assumed that there are at least five terminal devices in the network coverage of the network device, which are referred to as UE1, UE2, UE3, UE4 and UE5 respectively, wherein the target channel of UE1 can be denoted as H1, the target channel of UE2 can be denoted as H2, the target channel of UE3 can be denoted as H3, the target channel of UE4 can be denoted as H4, and the target channel of UE5 can be denoted as H5. In one possible case, the network device can group the five terminal devices (or the target channels of the five terminal devices) into three groups of terminal devices based on a grouping algorithm (such as AHC or Kmeans algorithm), and the reference channels associated with the three groups of terminal devices are H A , H B , and H C .

[0122] Specifically, UE1 and UE2 are a group of terminal devices (denoted as group A for example), in other words, the target channel H1 of UE1 and the target channel H2 of UE2 are a group, and the reference channel H A associated with group A is the centroid channel of H1 and H2. As an example, H A is the centroid channel of H1 and H2. Similarly, UE3 and UE4 are a group of terminal devices (denoted as group B for example), in other words, the target channel H3 of UE3 and the target channel H4 of UE4 are a group, and the reference channel H B associated with group B is the centroid channel of H3 and H4. As an example, H B is the centroid channel of H3 and H4. Similarly, UE5 is a group of terminal devices (denoted as group C for example), in other words, the target channel H5 of UE5 is a group, and the reference channel H C associated with group C is the centroid channel of H5. As an example, H C is the centroid channel of H5. For ease of description, taking group A as an example, group A can also be referred to as the group in which UE1 and UE2 are located, that is, the group in which UE1 is located is group A, and the group in which UE2 is located is group A. Group B and group C are similar, which will not be described here.

[0123] The following describes the basis for the network device to determine the Q groups of terminal devices.

[0124] In one possible implementation, the network device determines the Q groups of terminal devices based on at least one of the following: the positions of the terminal devices, the multipath parameters of the terminal devices, and the channels of the terminal devices. In other words, the network device groups the plurality of terminal devices based on at least one of the above. The following describes several examples.

[0125] In Example 1, the network device determines the Q groups of terminal devices based on the locations of the terminal devices. Specifically, terminal devices at different locations receive signals via different channels, and the weight coefficients corresponding to the channel matrices determined by the terminal devices at different locations also differ. Therefore, the terminal devices can be grouped based on the locations of the terminal devices.

[0126] The embodiments of the present application are not limited to a specific manner of representing the locations of the terminal devices. For example, the location of a terminal device can include an azimuth angle of departure (AoD) and / or a zenith angle of departure (ZoD) and / or an angle of arrival (AOA) and / or a zenith of arrival (ZOA) of the terminal device, or the location of a terminal device can be represented by coordinates, for example, a geographic coordinate (for example, a GPS coordinate, a geographic coordinate relative to a base station, a grid coordinate, or the like) of the terminal device, or a signal space coordinate (for example, a coordinate corresponding to a signal space divided according to the signal strengths of a plurality of base stations by the terminal device).

[0127] For example, taking UE1 and UE2 in FIG. 5 as an example, if the azimuth angles of departure of UE1 and UE2 are relatively close (for example, the deviation between the azimuth angles of departure of UE1 and UE2 is less than or equal to a threshold value #1), and / or the zenith angles of departure of UE1 and UE2 are relatively close (for example, the deviation between the zenith angles of departure of UE1 and UE2 is less than or equal to a threshold value #2), it can be determined that the spatial distance between UE1 and UE2 is relatively close, and the distance between the weight coefficients corresponding to the channel matrices estimated by UE1 and UE2 is also relatively close. Therefore, UE1 and UE2 can be regarded as a group of terminal devices.

[0128] For another example, taking UE1 and UE3 in FIG. 5 as an example, if the azimuth angles of departure of UE1 and UE3 are relatively far apart (for example, the deviation between the azimuth angles of departure of UE1 and UE3 is greater than a threshold value #1), and / or the zenith angles of departure of UE1 and UE3 are relatively far apart (for example, the deviation between the zenith angles of departure of UE1 and UE3 is greater than a threshold value #2), it can be determined that the spatial distance between UE1 and UE3 is relatively far apart, and the distance between the weight coefficients corresponding to the channel matrices estimated by UE1 and UE3 is also relatively far apart. Therefore, UE1 and UE3 cannot be regarded as a group of terminal devices.

[0129] In Example 2, the network device determines the Q groups of terminal devices based on the multipath parameters of the terminal devices. Specifically, terminal devices at different locations receive signals via different channels, and the multipath parameters of the terminal devices at different locations also differ. Therefore, the terminal devices can be grouped based on the multipath parameters of the terminal devices.

[0130] The multipath parameter can represent correlation information of each path when a signal is transmitted through a channel, such as a multipath component parameter of a transmitting antenna and / or a multipath component parameter of a receiving antenna. The multipath parameter can also be referred to as multipath information or multipath component (MPC) information. In embodiments of the present application, for brevity, the MPC information is described.

[0131] As an example, the MPC information includes at least one of the following: angle, delay, power, polarization, Doppler, phase, and the like. The angle can include at least one of the following: AOA, AOD, ZOA, and ZOD. AOA and ZOA respectively refer to the azimuth angle of arrival and the elevation angle of arrival of a signal arriving at a receiving antenna via a wireless channel, and AOD and ZOD respectively refer to the azimuth angle of departure and the elevation angle of departure of a signal departing from a transmitting antenna via a wireless channel.

[0132] The MPC information of the terminal device can be obtained by a sensing system, or can be obtained based on historical data of a channel, or can be obtained based on measurement of a reference signal, and the like.

[0133] For example, taking UE1 and UE2 in FIG. 5 as an example, if the angles of UE1 and UE2 are relatively close (for example, the deviation between the angles of UE1 and UE2 is less than or equal to a threshold value #3), it can be determined that the MPC information of UE1 and UE2 is relatively close, and therefore UE1 and UE2 can be a group of terminal devices.

[0134] For example, taking UE1 and UE4 in FIG. 5 as an example, if the angles of UE1 and UE4 are relatively far apart (for example, the deviation between the angles of UE1 and UE4 is greater than a threshold value #3), it can be determined that the MPC information of UE1 and UE4 is relatively far apart, and therefore UE1 and UE4 cannot be a group of terminal devices.

[0135] Example 3: The network device determines Q groups of terminal devices based on channels of the terminal devices.

[0136] As an example, the channel of the terminal device can be a frequency domain channel of the terminal device. That is, the network device can group the terminal devices based on the frequency domain channels of the terminal devices.

[0137] For example, taking UE1 and UE2 in FIG. 5 as an example, if the frequency domain channels of UE1 and UE2 are relatively close (for example, the deviation between the frequency domain channels of UE1 and UE2 is less than or equal to a threshold value #4), it can be determined that the target channels of UE1 and UE2 can be a group of terminal devices.

[0138] For example, taking UE1 and UE4 in FIG. 5 as an example, if the frequency domain channels of UE1 and UE4 are large (for example, the deviation between the frequency domain channels of UE1 and UE4 is greater than threshold #4), it can be determined that the target channels of UE1 and UE4 cannot be a group of terminal devices.

[0139] The deviation between the frequency domain channels of the terminal devices can be represented by distance. Taking UE1 and UE2 as an example, assuming that the channel matrix of the frequency domain channel of UE1 is H1, and the channel matrix of the frequency domain channel of UE2 is H2, the network device can calculate the distance, such as the Euclidean distance, of the weighting coefficients corresponding to the channel matrix H1 and the weighting coefficients corresponding to the channel matrix H2 to determine whether the frequency domain channels of UE1 and UE2 are similar (that is, the deviation between the frequency domain channels of UE1 and UE2).

[0140] Taking the Euclidean distance as an example. To calculate the Euclidean distance of the weighting coefficients corresponding to the channel matrix H1 and the weighting coefficients corresponding to the channel matrix H2, the weighting coefficients corresponding to the channel matrix H1 and the weighting coefficients corresponding to the channel matrix H2 can be normalized first to obtain a vector x representing the weighting coefficients corresponding to the channel matrix H1 and a vector y representing the weighting coefficients corresponding to the channel matrix H2, and the vectors x and y satisfy ||x||2=1 and ||y||2=1 respectively. Where ||||2 represents the two-norm of the vector, or the Euclidean norm. The Euclidean distance of the weighting coefficients corresponding to the channel matrix H1 relative to the weighting coefficients corresponding to the channel matrix H2 can be represented as ||x-y||2. Assuming that the threshold #3 is ε , and an example is that ε is 0.1. If the distance of the weighting coefficients corresponding to the channel matrix H1 relative to the weighting coefficients corresponding to the channel matrix H2 of the reference subband satisfies ||x-y||2≤ε, UE1 and UE2 can be a group of terminal devices. If the distance of the weighting coefficients corresponding to the channel matrix H1 relative to the weighting coefficients corresponding to the channel matrix H2 of the reference subband does not satisfy ||x-y||2≤ε, or in other words, ||x-y||2>ε, UE1 and UE2 cannot be a group of terminal devices.

[0141] It can be understood that the Euclidean distance is only one possible implementation for calculating the distance of the weight coefficients corresponding to the channel matrix of the two frequency domain channels, and the embodiments of the present application are not limited thereto. The distance may, for example, also be a Wasserstein distance (also known as an earth mover's distance), a Jensen-Shannon divergence (JS divergence), a cosine similarity, a normalized cross-correlation coefficient, an F-norm, and the like, and the formula for calculating the distance in the above examples can also be adjusted accordingly, and the present application is not limited thereto. Other enumerations of the above distances and possible implementations thereof can be referred to in the prior art, and will not be described in detail herein.

[0142] It can also be understood that the thresholds mentioned in the embodiments of the present application (such as threshold #1, threshold #2, threshold #3, threshold #4 as described above, and threshold #5, threshold #6, threshold #7 as described below) can be predefined, or configured, or indicated, and the present application is not limited thereto.

[0143] The following introduces Q first information.

[0144] The Q first information includes one or more of the following: an identifier of each of the Q groups of terminal devices, and / or a specific quantity of each of the Q groups of terminal devices, and / or information of a reference channel of each of the Q groups of terminal devices, and / or auxiliary information of each of the Q groups of terminal devices.

[0145] The identifier of each of the Q groups of terminal devices, also referred to as a group identifier, can be used to identify the groups of terminal devices, or can be used to identify the first information corresponding to the groups of terminal devices. Taking Q = 3, for example, three groups of terminal devices are referred to as a first group of terminal devices, a second group of terminal devices, and a third group of terminal devices, and as an example, the identifier of each of the Q groups of terminal devices can include an identifier of the first group of terminal devices, an identifier of the second group of terminal devices, and an identifier of the third group of terminal devices.

[0146] The specific quantity of each group of terminal devices in the Q group of terminal devices, or the parameter of each group of terminal devices in the Q group of terminal devices, represents information related to each group of terminal devices. As an example, the specific quantity of each group of terminal devices in the Q group of terminal devices includes at least one of the following: MPC information of each group of terminal devices in the Q group of terminal devices, a centroid position of each group of terminal devices in the Q group of terminal devices (or referred to as the coordinate / location / position of the centroid channel), a centroid channel of each group of terminal devices in the Q group of terminal devices, and a measurement result of a reference signal of each group of terminal devices in the Q group of terminal devices. The following describes these pieces of information.

[0147] 1) The MPC information of each group of terminal devices in the Q group of terminal devices can represent a measurement result of the MPC of each group of terminal devices in the Q group of terminal devices.

[0148] Taking a certain group of terminal devices as an example, the MPC information of the group of terminal devices can include at least one of the following: MPC information of each terminal device included in the group of terminal devices, MPC information of a reference channel corresponding to the group of terminal devices, and MPC information of a centroid position corresponding to the group of terminal devices. The MPC information can be referred to the foregoing description, and will not be described here.

[0149] 2) The centroid position of each group of terminal devices in the Q group of terminal devices can represent a centroid position of one or more terminal devices included in each group of terminal devices in the Q group of terminal devices. The first indication information can indicate information related to the centroid position of each group of terminal devices in the Q group of terminal devices.

[0150] 3) The centroid channel of each group of terminal devices in the Q group of terminal devices can represent a centroid channel of one or more target channels included in each group of terminal devices in the Q group of terminal devices. The first indication information can indicate information related to the centroid channel of each group of terminal devices in the Q group of terminal devices. As an example, the information related to the centroid channel of each group of terminal devices in the Q group of terminal devices includes at least one of the following: the centroid channel of each group of terminal devices in the Q group of terminal devices, a projection matrix corresponding to the centroid channel of each group of terminal devices in the Q group of terminal devices, and a PMI of the centroid channel of each group of terminal devices in the Q group of terminal devices. In other words, the first indication information can indicate at least one of the above.

[0151] Referring to Figure 6, as an example, Figure 6 is a schematic diagram of the centroid channel provided in an embodiment of this application. As shown in Figure 6, matrix H represents the centroid channel, and matrix U represents the projection matrix corresponding to the centroid channel. Taking the dimension of matrix H as n×m as an example, n represents the dimension related to the spatial frequency domain (e.g., the number of transmit antenna ports, the number of frequency domain subcarriers), and m represents the dimension related to the spatial domain, time domain, etc. (e.g., the number of receive antenna ports, the number of time domain TTIs). Matrix H can be transformed into matrix U and matrix C through matrix decomposition, where the dimension of matrix U is n×r. The dimension of matrix C is r×m, and the specific process satisfies formula (1). H=U H ×S H ×(V H ) H (1)

[0152] in,(*) H Characterizing the conjugate transpose of the matrix, U H Let U be the matrix obtained by SVD decomposition of matrix H. H The dimension is n×n, U H The column vectors of S can be called left singular vectors. H Let S be the matrix obtained by decomposing matrix H using SVD. H The dimension is n×m, S H Elements on the diagonal are called singular values. V H V is the matrix obtained by SVD decomposition of matrix H. H The dimension is m×m, V A The column vectors of H can be called right singular vectors. Matrix U can be constructed from r left singular vectors obtained by SVD decomposition of matrix H, i.e., matrix U = U H [:,1:r], which represents the expression from matrix U H The first to the rth columns are taken to form matrix U, meaning matrix U has a dimension of n×r. The columns of matrix U can represent the dimension of projecting the n rows onto the subspace. The dimension of the subspace can be used to determine the number of resources for a reference signal (such as CSI-RS). Here, r is a positive integer less than or equal to m.

[0153] 4) the measurement result of the reference signal of each group of terminal devices in the Q groups of terminal devices, which can represent the measurement result of the reference signal previously fed back by one or more terminal devices contained in each group of terminal devices. As an example, the measurement result of the reference signal includes at least one of the following: reference signal receiving power (RSRP), reference signal receiving quality (RSRQ), signal-to-noise ratio (SNR), signal-to-interference-plus-noise ratio (SINR) (or can be simply referred to as signal-to-interference ratio), precoding matrix indicator (PMI), rank indication (RI).

[0154] As an example of a certain group of terminal devices, the measurement result of the reference signal of the group of terminal devices can include at least one of the following: the measurement result of the reference signal of each terminal device contained in the group of terminal devices, the measurement result of the reference signal of the corresponding centroid position of the group of terminal devices, and the measurement result of the reference signal on the corresponding centroid channel of the group of terminal devices.

[0155] wherein the information of the reference channel of each group of terminal devices in the Q groups of terminal devices, wherein the information of the reference channel includes information that can be used to characterize the reference channel, or can include information related to the reference channel. As an example, the information of the reference channel includes at least one of the following: the identification (or index, or number, or serial number, etc.) of the reference channel, the channel matrix (or channel vector) of the reference channel, and the PMI of the reference channel.

[0156] wherein the time-frequency resource corresponding to each group of terminal devices in the Q groups of terminal devices means that one or more terminal devices within each group of terminal devices use the same time-frequency resource to transmit or receive signals.

[0157] It should be understood that the time-frequency resource corresponding to each group of terminal devices can include one or more time-frequency resources, which is not limited.

[0158] The auxiliary information corresponding to each group of terminal devices in the Q groups of terminal devices is information set to improve the accuracy and reliability of channel estimation. As an example, the auxiliary information is, for example, a channel estimation method (for example, minimum mean square error (MMSE), maximum likelihood estimation (MLE), etc.), and the auxiliary information is, for example, a filter (for example, a wiener filter) and an interpolation coefficient used for channel estimation.

[0159] The above is an example for illustration, and embodiments of the present application are not limited thereto. As an example, the information of the Q groups of terminal devices further includes information (such as an identifier of the terminal device) of the terminal device included in each group of terminal devices in the Q groups of terminal devices.

[0160] S402, the terminal device sends second indication information, and correspondingly, the network device receives the second indication information.

[0161] Specifically, the terminal device determines a group (for example, referred to as a target group, an example of the first group of communication devices) in which the terminal device is located based on the first indication information, and indicates the target group to the network device through the second indication information.

[0162] The specific implementation of the terminal device determining the target group based on the first indication information is described below.

[0163] In a first possible implementation, the first indication information is further used to indicate the group in which the terminal device is located, and the terminal device can determine the target group according to the first indication information.

[0164] In a second possible implementation, the terminal device selects the target group from the Q groups of terminal devices based on the first indication information. Specifically, the network device sends the first indication information to the terminal device, and the first indication information indicates Q first information; the terminal device selects the target group from the Q groups of terminal devices based on the Q first information, and the target group is the group in which the terminal device is located.

[0165] As an example, the target group satisfies a first preset condition. Wherein, the target group satisfies the first preset condition includes at least one of the following: a deviation between the centroid MPC information of the target group and the MPC information of the terminal device is less than or equal to a threshold #5 (i.e., an example of the first threshold); a deviation between the centroid position of the target group and the position of the terminal device is less than or equal to a threshold #6 (i.e., an example of the second threshold); and a measurement result of a reference signal of the target group satisfies a first condition.

[0166] The centroid MPC information of the target group refers to determining an MPC (for example, denoted as MPC#1) from the MPC set (for example, denoted as MPC set #1, and the MPC set #1 includes one or more MPCs) under the condition of satisfying spatial consistency, so that the average similarity of MPC#1 and the MPCs of the one or more target channels in the target group is the highest. The measurement criterion of the similarity is not limited by the embodiments of the present application. For example, the measurement criterion of the similarity is the cosine similarity of MPC#1 and the MPCs of the one or more target channels.

[0167] In other words, the terminal device can select the target group from the Q groups of terminal devices based on any of the following manners.

[0168] In a possible implementation, the terminal device determines the target group based on the MPC information of each group of terminal devices in the Q groups of terminal devices and the MPC information of the terminal device. For example, the deviation between the centroid MPC information of the target group and the MPC information of the terminal device is less than or equal to a threshold value #5, that is, the terminal device selects a group of terminal devices with the deviation between the centroid MPC information and the MPC information of the terminal device less than or equal to the threshold value #5 from the Q groups of terminal devices as the target group.

[0169] In another possible implementation, the terminal device determines the target group based on the centroid position of each group of terminal devices in the Q groups of terminal devices and the position of the terminal device. For example, the deviation between the centroid position of the target group and the position of the terminal device is less than or equal to a threshold value #6.

[0170] In another possible implementation, the terminal device determines the target group based on the centroid channel of each group of terminal devices in the Q groups of terminal devices and the target channel of the terminal device. For example, the deviation between the centroid channel of the target group and the target channel of the terminal device is less than or equal to a threshold value #7.

[0171] For example, taking Q=3 as an example, the operation of selecting a group by the terminal device can be represented as: g(H n ;H A ,H B ,H C )=H A , g(H m ;H A ,H B ,H C )=H B . Wherein, g() represents the algorithm for selecting a group, which can be the algorithm for calculating the Euclidean distance as described above, or can also be other algorithms; H n , H m represents the target channel of the terminal device; H A , H B , H CReference channel of 3 groups of terminal devices indicated by the network device. That is, for the terminal device whose target channel is H n , the network device selects H A from H B , H C , and H A as the reference channel based on an algorithm, that is, the terminal device selects the corresponding group of H A as the target group; for the terminal device whose target channel is H m , the network device selects H A from H B , H C , and H B as the reference channel based on an algorithm, that is, the terminal device selects the corresponding group of H B as the target group. The determination manner of the algorithm for the terminal device to select the target group is not limited. For example, the algorithm for the terminal device to select the target group can be predefined, or indicated by the network device, or determined by itself. In addition, the type of the algorithm for the terminal device to select the target group is not limited, which can be the above-mentioned algorithm of calculating the Euclidean distance, or other algorithms, which are not limited.

[0172] In another possible implementation, the terminal device determines the target group based on the measurement result of the reference signal of each group of terminal devices in the Q groups of terminal devices. As an example, the measurement result of the reference signal of the target group satisfies a first condition. For example, taking the measurement result of the reference signal including the RSRP of the reference channel as an example, the terminal device can select a group of terminal devices with the highest RSRP value (i.e., an example of the first condition) in the Q groups of terminal devices (or a group of terminal devices with the RSRP value greater than a threshold #7 (i.e., an example of the first condition)) as the target group.

[0173] The embodiment of the present application does not limit the acquisition manner of the first preset condition, which can be predefined, or configured, or indicated, for example. As a possible implementation, the first indication information is also used to indicate the first preset condition.

[0174] The specific implementation manner of the terminal device indicating the target group to the network device through the second indication information is introduced below.

[0175] Specifically, the terminal device sends the second indication information, and the second indication information indicates the target group.

[0176] The second indication information can be implemented by at least one bit. Assuming that there are 3 groups of terminal devices, which are group A, group B, and group C.

[0177] For example, the second indication information is implemented by 2 bits. For example, if the 2 bits are "01", it indicates that the selected group of the terminal device is group A; if the 2 bits are "10", it indicates that the selected group of the terminal device is group B; if the 2 bits are "11", it indicates that the selected group of the terminal device is group C. The case of "00" is not limited, for example, if the 2 bits are "00", it indicates that the terminal device does not select a group, or the terminal device does not select a group from group A, group B and group C.

[0178] For another example, the second indication information is implemented by a bitmap of 3 bits. Each bit in the bitmap corresponds to a group. A first value of a bit indicates that the group is the selected group of the terminal device, and a second value of the bit indicates that the group is not the selected group of the terminal device. For example, the first value is 0 and the second value is 1; or for example, the first value is 1 and the second value is 0. For example, if the 3 bits are "001", it indicates that the selected group of the terminal device is group A; if the 3 bits are "010", it indicates that the selected group of the terminal device is group B; if the 3 bits are "100", it indicates that the selected group of the terminal device is group C.

[0179] The above implementation of the second indication information is an example, and the embodiments of the present application are not limited thereto. For example, the terminal device corresponding to the Q groups indicated by the network device corresponds to an identifier, and the terminal device can indicate the selected group by indicating the identifier of the selected group.

[0180] S403, the terminal device receives the configuration information, and the network device sends the configuration information.

[0181] Specifically, the network device sends the configuration information of the group (for example, group #1) where the terminal device is located to the terminal device.

[0182] In a possible case, the group #1 is the same as the target group indicated by the second indication information, that is, the configuration information sent by the network device corresponds to the target group reported by the terminal device.

[0183] In another possible case, the group #1 is different from the target group indicated by the second indication information, that is, the network device selects a suitable group as the group (that is, group #1) of the terminal device based on the group (that is, the target group) reported by the terminal device and the actual communication situation, such as the service distribution of each terminal device at present, the buffer data volume, etc., and sends the configuration information corresponding to the group #1.

[0184] The configuration information is introduced below.

[0185] The configuration information comprises one or more of the following: an identifier of a terminal device group (for example, group #1) to which the configuration information corresponds, a reference signal (an example of the second signal) corresponding to group #1, model parameters corresponding to group #1, a reference channel corresponding to group #1, and a sequence number of the terminal device in group #1.

[0186] (1) The reference signal corresponding to group #1 is, for example, a CSI-RS, wherein the reference signal corresponding to group #1 is generated by the network device according to the reference channel corresponding to group #1.

[0187] Specifically, the network device can determine the antenna port and the frequency domain position of the reference signal corresponding to group #1 by performing matrix decomposition on the reference channel.

[0188] Referring to FIG. 7, which is a schematic diagram of determining the antenna port and the frequency domain position of the reference signal by the network device according to the reference channel, provided by an embodiment of the present application.

[0189] As shown in FIG. 7, the matrix U represents a projection matrix corresponding to the centroid channel, and the dimension of the matrix U is n x r. The decomposition of the matrix U can obtain the row in which the principal component is located, and the row in which the principal component is located represents the antenna port and the frequency domain position of the reference signal. As shown in FIG. 7, the matrix U comprises n row vectors, and the dimension of each row vector is 1 x r. Among the n row vectors, there are r row vectors, each of the (n-r) row vectors can be linearly expressed by the r row vectors, and the r row vectors are the row in which the principal component is located, or the r row vectors are the maximum linearly independent group.

[0190] (2) The model parameters corresponding to group #1 are, for example, parameters of an artificial intelligence (AI) / machine learning (ML) model. For example, the model parameters comprise an input parameter of the model (for example, position information of the terminal device), an output parameter of the model (for example, MPC information of the terminal device), and a hyperparameter of the model.

[0191] (3) The sequence number of the terminal device in group #1 is used to indicate that the terminal device selects one time-frequency resource from one or more time-frequency resources corresponding to group #1.

[0192] For example, group #1 corresponds to three time-frequency resources (denoted as time-frequency resource #A, time-frequency resource #B, and time-frequency resource #C), the sequence number of the terminal device in group #1 is i, i = 1, 2, 3, …, when i = 1, the terminal device uses the time-frequency resource #A, when i = 2, the terminal device uses the time-frequency resource #B, and when i = 3, the terminal device uses the time-frequency resource #C. The correspondence between the sequence number and the time-frequency resource is not limited in the embodiments of the present application. For example, the correspondence between the sequence number and the time-frequency resource can be predefined, or preconfigured, or indicated.

[0193] S404, the terminal device sends the measurement result or the first signal, and correspondingly, the network device receives the measurement result or the first signal.

[0194] Specifically, the terminal device determines the measurement result or the first signal based on the configuration information, and sends the measurement result or the first signal to the network device.

[0195] The following describes a scheme in which the terminal device determines the measurement result according to the configuration information.

[0196] In one possible case, the measurement result is an MPC result, where the MPC result includes, for example, AOA and / or ZOA.

[0197] Optionally, the MPC result is determined according to the model parameter corresponding to group #1.

[0198] Optionally, the MPC result is obtained by the terminal device measuring the reference signal corresponding to group #1.

[0199] In another possible case, the measurement result is a channel measurement result, where the channel measurement result includes, for example, at least one of the following: RSRP, RSRQ, SNR, PMI, RI, and CQI. The following describes a case in which the channel measurement result includes PMI.

[0200] Optionally, the PMI result is determined according to the model parameter corresponding to group #1.

[0201] Optionally, the PMI result is obtained by the terminal device measuring the reference signal corresponding to group #1.

[0202] The following describes a scheme in which the terminal device determines the first signal according to the configuration information.

[0203] The present embodiment does not limit the first signal, and the following gives an exemplary description.

[0204] In one possible case, the first signal is SRS, where the precoding weight of the SRS is determined based on the configuration information.

[0205] Optionally, the precoding weight of the SRS is determined according to the MPC result, for example, according to the AOA and / or ZOA included in the MPC result.

[0206] Optionally, the precoding weight of the SRS is obtained by the terminal device measuring the reference signal corresponding to group #1.

[0207] Optionally, the precoding weight of the SRS is determined according to the reference channel corresponding to group #1.

[0208] Another possible scenario, the first signal is PUSCH, wherein the precoding weight of the PUSCH is determined based on the configuration information.

[0209] Optionally, the precoding weight of the PUSCH is determined according to the MPC result, for example, according to the AOA and / or ZOA included in the MPC result.

[0210] Optionally, the precoding weight of the PUSCH is obtained by the terminal device measuring the reference signal corresponding to the group #1.

[0211] Optionally, the precoding weight of the PUSCH is determined according to the reference channel corresponding to the group #1.

[0212] S405, the network device determines the CSI.

[0213] Specifically, the network device determines the CSI of the terminal device based on the received measurement result or the first signal, wherein the network device measures the first signal to obtain the corresponding CSI.

[0214] Through the method provided by the embodiment of the present application, the network device determines the CSI of the terminal device based on the measurement result or the first signal, wherein the measurement result or the first signal is determined according to the configuration information. Since the configuration information is associated with the terminal device grouping result and the service distribution, this way makes the CSI more suitable for the specific service distribution scenario.

[0215] Optionally, the method 400 further includes: the terminal device sends the capability indication information, and the capability indication information indicates whether the terminal device supports determining the measurement result or the first signal based on the configuration information. In one possible implementation, the terminal device sends the capability indication information to the network device in the initial cell access process.

[0216] The capability indication information can be used by the network device to determine whether to group the terminal device, and / or the capability indication information can be used by the network device to select the basis for grouping the terminal device, and / or the capability indication information can be used to indicate the processing capability of the terminal device to the configuration information, and / or whether the terminal device supports precoding processing of the first signal based on the reference channel.

[0217] The specific content indicated by the capability indication information is not limited in the embodiments of the present application. For example, the capability indication information includes one or more of the following: whether the terminal device supports selecting a target group based on the first information, the number of terminal device groups supported by the terminal device, whether the terminal device supports determining the first information corresponding to the updated terminal device group based on the number of the updated terminal device group, the computing capability of the terminal device, whether the terminal device supports grouping the terminal device by the network device according to the location of the terminal device, whether the terminal device supports grouping the terminal device by the network device according to the channel of the terminal device, and whether the terminal device supports grouping the terminal device by the network device according to the multipath parameter of the terminal device.

[0218] The method provided by the embodiments of the present application is described in detail above in combination with FIG. 4 to FIG. 7. The apparatus provided by the embodiments of the present application is described in detail below in combination with FIG. 8 to FIG. 10. It should be understood that the description of the apparatus embodiments corresponds to the description of the method embodiments, and therefore, the content not described in detail can be referred to the method embodiments described above, which will not be described here for brevity.

[0219] Referring to FIG. 8, for example, FIG. 8 is a schematic diagram of a communication apparatus 800 provided by the embodiments of the present application. The communication apparatus 800 includes a transceiver unit 810 and a processing unit 820. The transceiver unit 810 can be used to implement the corresponding communication function. The transceiver unit 810 can also be referred to as a communication interface or a communication unit. The processing unit 820 can be used for processing, such as determining the measurement result or the first signal according to the configuration information.

[0220] Optionally, the apparatus 800 can further include a storage unit, which can be used to store instructions and / or data. The processing unit 820 can read the instructions and / or data in the storage unit, so that the apparatus implements the foregoing method embodiments.

[0221] Optionally, the transceiver unit 810 includes a sending unit and a receiving unit. The sending unit is used to perform the sending operation in the above-described embodiments, and the receiving unit is used to perform the receiving operation in the above-described embodiments.

[0222] It should be noted that the communication apparatus 800 can include a sending unit and not include a receiving unit, or the communication apparatus 800 can include a receiving unit and not include a sending unit. Specifically, whether the sending action and the receiving action are included in the above-described scheme executed by the communication apparatus 800. For example, the communication apparatus 800 is used to perform the action performed by the terminal device or the network device in the embodiment shown in FIG. 4 described above. For details, please refer to the related description in the embodiment shown in FIG. 4 described above, which will not be described here.

[0223] For example, the communication apparatus 800 is used to perform the following scheme.

[0224] In a first possible design, the apparatus 800 is a terminal device (i.e., a first communication apparatus), or a component (e.g., a chip or a chip system or a circuit) of the terminal device. The transceiver and the processor can be used to implement relevant operations of the terminal device.

[0225] In a possible implementation, the transceiver 810 receives configuration information associated with a first group of communication apparatuses in a Q-group of communication apparatuses, the first communication apparatus belongs to the first group of communication apparatuses, each group of communication apparatuses in the Q-group of communication apparatuses includes at least one communication apparatus, and Q is an integer greater than 1 or equal to 1. The transceiver 810 also transmits a measurement result or a first signal, where the measurement result is determined based on the configuration information, the measurement result includes a measurement result of an MPC and / or a channel measurement result, and precoding information of the first signal is determined based on the configuration information.

[0226] Optionally, the first signal is an SRS, or the first signal is a PUSCH.

[0227] Optionally, the Q-group of communication apparatuses is determined based on at least one of the following parameters: a location of the communication apparatus, MPC information of the communication apparatus, and a channel of the communication apparatus.

[0228] Optionally, the configuration information includes one or more of the following: an identifier of the first group of communication apparatuses, model parameters corresponding to the first group of communication apparatuses, and a reference channel corresponding to the first group of communication apparatuses.

[0229] Optionally, the transceiver 810 also receives first indication information indicating Q first information corresponding to the Q-group of communication apparatuses, and transmits second indication information indicating the first group of communication apparatuses that satisfy a first preset condition.

[0230] Optionally, the first preset condition includes at least one of the following: a deviation between a centroid MPC information of the first group of communication apparatuses and MPC information of the first communication apparatus is less than or equal to a first threshold; a deviation between a centroid location of the first group of communication apparatuses and a location of the first communication apparatus is less than or equal to a second threshold; and a measurement result of a reference signal associated with the first group of communication apparatuses satisfies a first condition.

[0231] Optionally, the first indication information is also used to indicate the first preset condition.

[0232] Optionally, each of the Q first information includes at least one of the following: an identifier of a group of communication apparatuses corresponding to the first information, MPC information of the group of communication apparatuses corresponding to the first information, a centroid location of the group of communication apparatuses corresponding to the first information, and a measurement result of a reference signal associated with the group of communication apparatuses corresponding to the first information.

[0233] Optionally, the transceiver 810 is further configured to send capability indication information, the capability indication information indicating whether the first communication apparatus supports determining the measurement result or the first signal based on the configuration information.

[0234] In a second possible design, the apparatus 800 is a network device (i.e., a second communication apparatus), or a component (e.g., a chip or a chip system or a circuit) of the network device. The transceiver and the processor can be configured to perform operations of the network device.

[0235] In a possible implementation, the transceiver 810 is configured to send configuration information, the configuration information being associated with a first group of communication apparatuses in a Q group of communication apparatuses, the first group of communication apparatuses including the first communication apparatus, each group of communication apparatuses in the Q group of communication apparatuses including at least one communication apparatus, Q being an integer greater than 1 or equal to 1; and the transceiver 810 is further configured to receive the measurement result or the first signal, wherein the measurement result is determined based on the configuration information, the measurement result including a measurement result of an MPC and / or a channel measurement result, and precoding information of the first signal is determined based on the configuration information.

[0236] Optionally, the first signal is an SRS; or the first signal is a PUSCH.

[0237] Optionally, the Q group of communication apparatuses is determined based on at least one of the following parameters: a location of the communication apparatus, MPC information of the communication apparatus, and a channel of the communication apparatus.

[0238] Optionally, the configuration information includes one or more of the following: an identifier of the first group of communication apparatuses, model parameters corresponding to the first group of communication apparatuses, and a reference channel corresponding to the first group of communication apparatuses.

[0239] Optionally, the transceiver 810 is further configured to send first indication information, the first indication information indicating Q first information corresponding to the Q group of communication apparatuses; and the transceiver 810 is further configured to receive second indication information, the second indication information indicating the first group of communication apparatuses that satisfy a first preset condition.

[0240] Optionally, the first preset condition includes at least one of the following: a deviation between a centroid MPC information of the first group of communication apparatuses and MPC information of the first communication apparatus is less than or equal to a first threshold; a deviation between a centroid location of the first group of communication apparatuses and a location of the first communication apparatus is less than or equal to a second threshold; and a measurement result of a reference signal associated with the first group of communication apparatuses satisfies a first condition.

[0241] Optionally, the first indication information is further used to indicate the first preset condition.

[0242] Optionally, each of the Q first information comprises at least one of the following: an identity of the group of communication devices corresponding to the first information, MPC information of the group of communication devices corresponding to the first information, a centroid position of the group of communication devices corresponding to the first information, and a measurement result of a reference signal associated with the group of communication devices corresponding to the first information.

[0243] Optionally, the transceiver 810 is further configured to receive capability indication information indicating whether the first communication device supports determining the measurement result or the first signal based on the configuration information.

[0244] It can be understood that the division of units in the above device is only a logical function division, one function unit can be corresponding to each function, or two or more functions can be integrated in one function unit. In actual implementation, all or part of the units can be integrated on one physical entity, or can be distributed on different physical entities. In addition, the above function units can be realized in the form of hardware, or in the form of software, or in the form of hardware combined with software. Whether a certain function is executed in the form of hardware or software depends on the specific application and design constraints of the technical scheme. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0245] In one example, the function units in any of the above devices can be one or more integrated circuits configured to implement the above methods, such as one or more application specific integrated circuits (ASICs), or one or more central processing units (CPUs), one or more microcontroller units (MCUs), one or more digital signal processors (DSPs), or one or more field programmable gate arrays (FPGAs), or a combination of at least two of these integrated circuit forms.

[0246] In one example, the storage unit can include random access memory, flash memory, read only memory, programmable read only memory, electrically erasable programmable memory, and / or registers, etc.

[0247] Referring to FIG. 9, as an example, FIG. 9 is a schematic diagram of another communication apparatus 900 provided by the embodiments of the present application. The apparatus 900 includes a processor 910, and the processor 910 is coupled to a memory 920. The memory 920 is configured to store computer programs or instructions and / or data. The processor 910 is configured to execute the computer programs or instructions stored in the memory 920, or read the data stored in the memory 920, to perform the methods in the above method embodiments.

[0248] Optionally, the processor 910 is one or more.

[0249] Optionally, the memory 920 is one or more.

[0250] Optionally, the memory 920 is integrated with the processor 910, or is separately arranged.

[0251] Optionally, as shown in FIG. 9, the apparatus 900 further includes a transceiver 930 configured to receive and / or send signals. For example, the processor 910 is configured to control the transceiver 930 to receive and / or send signals.

[0252] As an example, the processor 910 can have the functions of the processing unit 820 shown in FIG. 8. The memory 920 can have the functions of a storage unit. The transceiver 930 can have the functions of the transceiving unit 810 shown in FIG. 8.

[0253] As an example, the apparatus 900 is configured to implement the operations performed by the communication apparatus (e.g., the first communication apparatus, or the second communication apparatus) in the above method embodiments.

[0254] For example, the processor 910 is configured to execute the computer programs or instructions stored in the memory 920, to implement the related operations of the communication apparatus in the above method embodiments.

[0255] It should be understood that the processor mentioned in the embodiments of the present application can be a central processing unit (CPU), and can also be other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor, or the processor can also be any conventional processor.

[0256] It should also be understood that the memory referred to in the embodiments of the application can be a volatile memory and / or a non-volatile memory. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically EPROM (EEPROM) or a flash memory. The volatile memory can be a random access memory (RAM). For example, the RAM can be used as an external cache. As an example but not limitation, the RAM includes the following various forms: static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM) and direct memory bus random access memory (direct rambus RAM, DR RAM).

[0257] It should be noted that when the processor is a general 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 in the processor.

[0258] It should also be noted that the memory described herein is intended to include, but not limited to, these and any other suitable types of memory.

[0259] Referring to FIG. 10, as an example, FIG. 10 is a schematic diagram of a chip system 1000 provided by an embodiment of the application. The chip system 1000 (or also can be called a processing system) includes a logic circuit 1010 and an input / output interface 1020.

[0260] The logic circuit 1010 can be a processing circuit in the chip system 1000. The logic circuit 1010 can be coupled to a storage unit, and invoke instructions in the storage unit, so that the chip system 1000 can implement the methods and functions of the embodiments of the present application. The input / output interface 1020 can be an input / output circuit in the chip system 1000, and output information processed by the chip system 1000, or input data or signaling information to be processed by the chip system 1000.

[0261] As an option, the chip system 1000 is configured to implement operations performed by a communication device (e.g., the first communication device, or the second communication device) in the above method embodiments.

[0262] For example, the logic circuit 1010 is configured to implement processing-related operations performed by a communication device (e.g., the first communication device, or the second communication device) in the above method embodiments; and the input / output interface 1020 is configured to implement sending and / or receiving-related operations performed by a communication device (e.g., the first communication device, or the second communication device) in the above method embodiments.

[0263] The embodiments of the present application also provide a computer-readable storage medium, which stores a computer program or instructions for implementing the method performed by a communication device (e.g., the first communication device, or the second communication device) in the above method embodiments. For example, the computer program or instructions, when running on the communication device, enable the communication device (e.g., the first communication device, or the second communication device) to perform the above method.

[0264] The embodiments of the present application also provide a computer program product, which contains instructions executed by a computer to implement the method performed by a communication device (e.g., the first communication device, or the second communication device) in the above method embodiments. For example, the computer program or instructions, when running on the communication device, enable the communication device (e.g., the first communication device, or the second communication device) to perform the above method.

[0265] The embodiments of the present application also provide a communication system, which includes the first communication device and / or the second communication device in the above embodiments. For example, the system includes the terminal device and the network device in the embodiment of FIG. 4.

[0266] The above-described explanations and advantages of the related contents in any of the above devices can refer to the corresponding method embodiments provided above, and will not be repeated here.

[0267] In several embodiments provided in the present application, it should be understood that the disclosed apparatus and method can be implemented by other manners. For example, the apparatus embodiments described above are only illustrative, for example, the division of the units is only a logical function division, and actual implementation can have another division manner, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the units or components shown or discussed can be indirect coupling or communication connection through some interfaces, apparatuses or units, and can be electrical, mechanical or other forms.

[0268] In the above embodiments, all or part of the embodiments can be implemented by software, hardware, firmware or any combination thereof. When implemented by software, all or part of the embodiments can be implemented in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network or other programmable devices. For example, the computer can be a personal computer, a server or a network device. The computer instructions can be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center through wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) mode. The computer readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. integrated with one or more available media. The available media can be magnetic media (such as floppy disk, hard disk, magnetic tape), optical media (such as DVD), or semiconductor media (such as solid state disk (SSD) and the like. For example, the foregoing available media includes but is not limited to: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), magnetic disk or optical disk and various media that can store program codes.

[0269] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A communication method characterized by comprising: The method applied to a first communication device comprises: receiving configuration information, the configuration information being associated with a first group of communication devices in Q groups of communication devices, the first communication device belonging to the first group of communication devices, each group of communication devices in the Q groups of communication devices comprising at least one communication device, Q being an integer greater than 1 or equal to 1; sending a measurement result or a first signal, the measurement result being determined based on the configuration information, the measurement result comprising a measurement result of a multipath component (MPC) and / or a channel measurement result, precoding information of the first signal being determined based on the configuration information.

2. The method of claim 1, wherein, Before the receiving of the configuration information, the method further comprises: receiving first indication information, the first indication information indicating Q first information corresponding to the Q groups of communication devices; sending second indication information, the second indication information indicating the first group of communication devices, the first group of communication devices satisfying a first preset condition.

3. A communication method characterized by comprising: The method applied to a second communication device comprises: sending configuration information, the configuration information being associated with a first group of communication devices in Q groups of communication devices, the first group of communication devices comprising the first communication device, each group of communication devices in the Q groups of communication devices comprising at least one communication device, Q being an integer greater than 1 or equal to 1; receiving a measurement result or a first signal, the measurement result being determined based on the configuration information, the measurement result comprising a measurement result of a multipath component (MPC) and / or a channel measurement result, precoding information of the first signal being determined based on the configuration information; determining channel state information (CSI) of the first communication device based on the measurement result or the first signal.

4. The method of claim 3, wherein, Before the sending of the configuration information, the method further comprises: sending first indication information, the first indication information indicating Q first information corresponding to the Q groups of communication devices; receiving second indication information, the second indication information indicating the first group of communication devices, the first group of communication devices satisfying a first preset condition.

5. The method according to any one of claims 1 to 4, characterized in that, The method further comprises: sending or receiving capability indication information, the capability indication information indicating whether the first communication device supports determining the measurement result or the first signal based on the configuration information.

6. The method according to any one of claims 1 to 5, characterized in that, The method comprises: The configuration information comprises one or more of the following: an identifier of the first group of communication devices, a second signal corresponding to the first group of communication devices, a model parameter corresponding to the first group of communication devices, a reference channel corresponding to the first group of communication devices.

7. The method according to any one of claims 1 to 6, characterized in that, The Q groups of communication devices are determined based on at least one of the following parameters: a position of a communication device, MPC information of a communication device, a channel of a communication device.

8. The method according to any one of claims 2, 4 to 7, characterized in that, The method comprises: Each of the Q first information comprises at least one of the following: an identifier of a group of communication devices corresponding to the first information, MPC information of a group of communication devices corresponding to the first information, a centroid position of a group of communication devices corresponding to the first information, a measurement result of a reference signal associated with a group of communication devices corresponding to the first information.

9. The method according to any one of claims 2, 4 to 8, characterized in that, The first group of communication devices satisfying the first preset condition comprises at least one of the following: a deviation between a center of mass MPC information of the first group of communication devices and the MPC information of the first communication device is less than or equal to a first threshold; a deviation between a center of mass position of the first group of communication devices and a position of the first communication device is less than or equal to a second threshold; a measurement result of a reference signal associated with the first group of communication devices satisfies a first condition.

10. The method according to any one of claims 2, 4 to 9, characterized in that, The first indication information further indicates the first preset condition.

11. A communications device, characterized by The chip system comprises a module or unit for executing the method of any one of claims 1 to 10.

12. A communications device, characterized by The chip system comprises a processor configured to cause the communication device to execute the method of any one of claims 1 to 10.

13. A chip system, characterized by The chip system comprises a processor configured to cause the communication device to execute the method of any one of claims 1 to 10.

14. A computer-readable storage medium, characterized in that, The computer readable storage medium stores a computer program or instructions, which, when executed on the communication device, cause the communication device to execute the method of any one of claims 1 to 10.

15. A computer program product, characterised in that, The computer program product comprises a computer program or instructions, which, when executed on the communication device, cause the communication device to execute the method of any one of claims 1 to 10.

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