Communication method and communication device

Abstract

The present application provides a communication method and a communication device, in which a network device notifies a terminal device of the antenna port that actually sends a reference signal, so that the terminal device can obtain more accurate CSI by measuring the reference signal sent by the antenna port that actually sends the reference signal. In some methods, the network device can directly or indirectly activate a reference signal resource that matches the antenna port currently used by the network device, or the network device can directly or indirectly indicate to the terminal device a reference signal resource that matches the antenna port currently used by the network device among the currently activated reference signal resources or previously configured reference signal resources, so that the terminal device can obtain more accurate CSI based on the indication of the network device by measuring the reference signal sent by the antenna port that actually sends the reference signal.

Description

Technical Field

[0001] The present application relates to the field of communications, and more particularly, to a communication method and a communication device. Background Art

[0002] In a communication system, a network device can send a channel state information reference signal (CSI-RS) to a terminal device. The terminal device can obtain channel state information (CSI) by measuring the CSI-RS. The terminal device can then feed the CSI back to the network device, which then schedules the terminal device based on the CSI.

[0003] In some scenarios, network devices can achieve energy conservation by shutting down some transmit (Tx) channels (or transmit antennas). This may cause the transmit antenna ports on the network device to change, potentially leading to inaccurate CSI measurements. Summary of the Invention

[0004] The present application provides a communication method and a communication device, which can improve the accuracy of CSI measurement by ensuring that the transmitter and receiver have a consistent understanding of the antenna port corresponding to the reference signal resource or the reference signal resource.

[0005] In a first aspect, a communication method is provided, which can be executed by a terminal device or a chip configured in the terminal device. The method includes: receiving first signaling, the first signaling indicating a first reference signal resource, the first reference signal resource corresponding to P antenna ports; receiving first indication information, and determining, based on the first indication information, Q antenna ports of the P antenna ports for determining CSI, where P and Q are both positive integers and P>Q.

[0006] Exemplarily, the Q antenna ports are transmitting antenna ports currently used by the network device.

[0007] According to the communication method provided by the present application, when the number of transmission channels changes, that is, when the transmitting antenna port used by the network device changes, the network device can indicate to the terminal device, based on the currently used transmitting antenna port, that Q antenna ports corresponding to the reference signal resource (that is, the first reference signal resource) that has been activated or previously configured but not activated can continue to be used to determine the antenna port of the CSI. In this way, the antenna port of the network device that the terminal device understands as sending the reference signal is consistent with the antenna port of the network device that actually sends the reference signal, so that the terminal device can determine a more accurate CSI based on the measurement of the reference signal sent by the antenna port that actually sends the reference signal, that is, the CSI determined by the terminal device can reflect the actual situation of the channel, thereby optimizing the scheduling of the terminal device by the network device.

[0008] Optionally, the first indication information indicates the Q antenna ports, or the first indication information indicates antenna ports other than the Q antenna ports among the P antenna ports.

[0009] Optionally, the first indication information indicates a first energy saving mode. Determining, according to the first indication information, Q antenna ports for determining CSI among the P antenna ports includes: determining, according to the first energy saving mode, the Q antenna ports associated with the first energy saving mode.

[0010] Specifically, the terminal device can determine the Q antenna ports according to preset rules and the first energy-saving mode.

[0011] In this solution, only a relatively small bit overhead is required to indicate the energy-saving mode, thereby reducing signaling overhead.

[0012] In conjunction with the first aspect, in certain implementations of the first aspect, P = 2*P1*P2, where P1 is the number of antenna ports in the first dimension, P2 is the number of antenna ports in the second dimension, and Q = 2*Q1*Q2, where Q1 is the number of antenna ports in the first dimension, Q2 is the number of antenna ports in the second dimension, and P1, P2, Q1, and Q2 are all positive integers. Where Q1 = P1, and Q2 < P2; or, Q1 < P1, and Q2 < P2.

[0013] The first dimension may be a horizontal dimension, and the second dimension may be a vertical dimension, but this application does not limit this.

[0014] With reference to the first aspect, in certain implementations of the first aspect, the P antenna ports are divided into 2*A1 groups according to antenna port indexes in ascending order, each group including A2 antenna ports, where A1 is a positive integer and A2 is an integer greater than or equal to 2. Among the A2 antenna ports in each group, Q / (2*A1) antenna ports belong to the Q antenna ports.

[0015] Optionally, the Q / (2*A1) antenna ports in each group of A2 antenna ports belong to the Q antenna ports, including one of the following: the Q / (2*A1) antenna ports with larger indexes in each group of A2 antenna ports belong to the Q antenna ports; the Q / (2*A1) antenna ports with smaller indexes in each group of A2 antenna ports belong to the Q antenna ports; the Q / (2*A1) antenna ports with larger indexes in each group of A2 antenna ports in the first A1 groups in the 2*A1 groups belong to the Q antenna ports. The ports belong to the Q antenna ports, and the Q / (2*A1) antenna ports with smaller indexes among the A2 antenna ports in each group in the last A1 groups in the 2*A1 groups belong to the Q antenna ports; the Q / (2*A1) antenna ports with smaller indexes among the A2 antenna ports in each group in the first A1 groups in the 2*A1 groups belong to the Q antenna ports, and the Q / (2*A1) antenna ports with larger indexes among the A2 antenna ports in each group in the last A1 groups in the 2*A1 groups belong to the Q antenna ports.

[0016] In combination with the first aspect, in certain implementations of the first aspect, the P antenna ports are divided into a first polarization direction port group and a second polarization direction port group according to the polarization direction, and the Q / 2 antenna ports in the first polarization direction port group belong to the Q ports, and the Q / 2 antenna ports in the second polarization direction port group belong to the Q ports.

[0017] Optionally, Q / 2 ports with larger indexes in each group of P / 2 ports belong to the Q ports.

[0018] Alternatively, Q / 2 ports with smaller indexes in each group of P / 2 ports belong to the Q ports.

[0019] Alternatively, Q / 2 ports with larger indexes among P / 2 ports in the first of the two groups belong to the Q ports, and Q / 2 ports with smaller indexes among P / 2 ports in the second group belong to the Q ports.

[0020] Alternatively, Q / 2 ports with smaller indexes among P / 2 ports in the first of the two groups belong to the Q ports, and Q / 2 ports with larger indexes among P / 2 ports in the second group belong to the Q ports.

[0021] In combination with the first aspect, in certain implementations of the first aspect, the method may further include: determining CSI based on the Q antenna ports and the first information.

[0022] The first information indicates that the number of antenna ports in the first dimension is B1, and the number of antenna ports in the second dimension is B2, both B1 and B2 are positive integers, C1 is the number of antenna ports in the first dimension indicated by the first codebook configuration information associated with the first reference signal resource, and C2 is the number of antenna ports in the second dimension indicated by the first codebook configuration information. B1 = C1, and B2 < C2; or, B1 < C1, and B2 = C2; or, B1 < C1, and B2 < C2.

[0023] The network device can determine B1 and B2 based on the antenna port that actually transmits the reference signal, or the terminal device can determine B1 and B2 based on preset rules to match the antenna port that actually transmits the reference signal. Because B1 and B2 match the antenna port that actually transmits the reference signal, the CSI determined by the terminal device is more accurate.

[0024] In a second aspect, a communication method is provided, which can be executed by a network device or a chip configured in the network device. The method includes: sending first signaling, the first signaling indicating a first reference signal resource, the first reference signal resource corresponding to P antenna ports; determining Q antenna ports among the P antenna ports; and sending first indication information, the first indication information indicating one of the following: the Q antenna ports, antenna ports among the P antenna ports other than the Q antenna ports, and a first energy-saving mode. The first energy-saving mode is associated with the Q antenna ports.

[0025] Exemplarily, the Q antenna ports are transmitting antenna ports currently used by the network device.

[0026] According to the communication method provided by the present application, when the number of transmission channels changes, that is, when the transmitting antenna port used by the network device changes, the network device can indicate to the terminal device, based on the currently used transmitting antenna port, that Q antenna ports corresponding to the reference signal resource (that is, the first reference signal resource) that has been activated or previously configured but not activated can continue to be used to determine the antenna port of the CSI. In this way, the antenna port of the network device that the terminal device understands as sending the reference signal is consistent with the antenna port of the network device that actually sends the reference signal, so that the terminal device can determine a more accurate CSI based on the measurement of the reference signal sent by the antenna port that actually sends the reference signal, that is, the CSI determined by the terminal device can reflect the actual situation of the channel, thereby optimizing the scheduling of the terminal device by the network device.

[0027] In combination with the second aspect, in some implementations of the second aspect, P=2*P1*P2, P1 is the number of antenna ports in the first dimension, P2 is the number of antenna ports in the second dimension, Q=2*Q1*Q2, Q1 is the number of antenna ports in the first dimension, Q2 is the number of antenna ports in the second dimension, P1, P2, Q1, Q2 are all positive integers; wherein, Q1=P1, and Q2<P2; or, Q1<P1, and Q2<P2.

[0028] With reference to the second aspect, in certain implementations of the second aspect, the P antenna ports are divided into 2*A1 groups according to antenna port indexes in ascending order, each group including A2 antenna ports, where A1 is a positive integer and A2 is an integer greater than or equal to 2. Among the A2 antenna ports in each group, Q / (2*A1) antenna ports belong to the Q antenna ports.

[0029] Optionally, the Q / (2*A1) antenna ports in each group of A2 antenna ports belong to the Q antenna ports, including one of the following: the Q / (2*A1) antenna ports with larger indexes in each group of A2 antenna ports belong to the Q antenna ports; the Q / (2*A1) antenna ports with smaller indexes in each group of A2 antenna ports belong to the Q antenna ports; the Q / (2*A1) antenna ports with larger indexes in each group of A2 antenna ports in the first A1 groups in the 2*A1 groups belong to the Q antenna ports. The ports belong to the Q antenna ports, and the Q / (2*A1) antenna ports with smaller indexes among the A2 antenna ports in each group in the last A1 groups in the 2*A1 groups belong to the Q antenna ports; the Q / (2*A1) antenna ports with smaller indexes among the A2 antenna ports in each group in the first A1 groups in the 2*A1 groups belong to the Q antenna ports, and the Q / (2*A1) antenna ports with larger indexes among the A2 antenna ports in each group in the last A1 groups in the 2*A1 groups belong to the Q antenna ports.

[0030] In conjunction with the second aspect, in certain implementations of the second aspect, the method may further include: sending first information, where the first information indicates that the number of antenna ports in the first dimension is B1, the number of antenna ports in the second dimension is B2, B1 and B2 are both positive integers, C1 is the number of antenna ports in the first dimension indicated by the first codebook configuration information associated with the first reference signal resource, and C2 is the number of antenna ports in the second dimension indicated by the first codebook configuration information. Wherein, B1 = C1, and B2 < C2; or, B1 < C1, and B2 = C2; or, B1 < C1, and B2 < C2.

[0031] The network device can determine B1 and B2 based on the antenna port that actually transmits the reference signal, or the terminal device can determine B1 and B2 based on preset rules to match the antenna port that actually transmits the reference signal. Because B1 and B2 match the antenna port that actually transmits the reference signal, the CSI determined by the terminal device is more accurate.

[0032] In a third aspect, a communication method is provided, including: receiving second signaling, the second signaling indicating a second reference signal resource; receiving second indication information, and determining CSI based on the second indication information.

[0033] In a fourth aspect, a communication method is provided, comprising: sending a second signaling, the second signaling indicating a second reference signal resource; and sending second indication information, the second indication information being used by a terminal device to determine CSI.

[0034] In the third aspect and the fourth aspect, in a first possible manner, the second indication information is used to deactivate the second reference signal resource and activate the third reference signal resource.

[0035] The second reference signal resource may include one or more reference signal resources, or the second reference signal resource may include one or more groups of reference signal resources. The antenna ports corresponding to the reference signal resources in the second reference signal resource #1 may be the same or different.

[0036] The third reference signal resource may include one or more reference signal resources, or the third reference signal resource may include one or more groups of reference signal resources. The antenna ports corresponding to the reference signal resources in the third reference signal resource may be the same or different.

[0037] Exemplarily, the antenna port corresponding to each reference signal resource in the third reference signal resource belongs to a transmitting antenna port currently used by the network device.

[0038] Based on this solution, the network device can reactivate a reference signal resource (i.e., the third reference signal resource) for the terminal device based on the currently used transmit antenna port and deactivate the reference signal resource (i.e., the second reference signal resource) that does not match the currently used transmit antenna port. In this way, the reference signal resource based on which the terminal device determines the CSI is consistent with the reference signal resource based on which the network device actually sends the reference signal. Therefore, the terminal device can determine more accurate CSI based on the reference signal resource based on which the reference signal is actually sent. That is, the CSI determined by the terminal device can reflect the actual situation of the channel, thereby optimizing the network device's scheduling of the terminal device.

[0039] Optionally, the second reference signal resource is associated with the third reference signal resource, and the second indication information includes information about the second reference signal resource but does not include information about the third reference signal resource.

[0040] Optionally, the second indication information includes information about the second reference signal resource and information about the third reference signal resource.

[0041] In combination with the third aspect, in certain implementations of the third aspect, determining the CSI according to the second indication information includes: determining the CSI according to the second indication information and the first information.

[0042] In combination with the fourth aspect, in certain implementations of the fourth aspect, the method may further include: sending first information.

[0043] The first information indicates that the number of antenna ports in the first dimension is Q1, and the number of antenna ports in the second dimension is Q2. Both Q1 and Q2 are integers greater than or equal to 1, Q1=P1, Q2<P2, or Q1<P1 and Q2=P2, or Q1<P1 and Q2<P2, P1 is the number of antenna ports in the first dimension indicated by the first codebook configuration information associated with the second reference signal resource, and P2 is the number of antenna ports in the second dimension indicated by the first codebook configuration information. The first dimension may be a horizontal dimension, and the second dimension may be a vertical dimension, but this application is not limited to this.

[0044] Q1 and Q2 are determined based on the antenna port where the network device actually sends the reference signal, so the CSI determined by the terminal device is more accurate.

[0045] In the third aspect and the fourth aspect, in a second possible manner, the second indication information is used to deactivate part of reference signal resources in the second reference signal resources that are periodic reference signal resources.

[0046] Exemplarily, each reference signal resource in the non-deactivated reference signal resources belongs to a transmitting antenna port currently used by the network device. The corresponding antenna ports in the deactivated reference signal resources include transmitting antenna ports currently not used by the network device.

[0047] Based on this solution, the network device can deactivate inappropriate reference signal resources among the currently activated reference signal resources according to the currently used transmitting antenna port, thereby improving the accuracy of CSI measurement and optimizing the scheduling of terminal devices by the network device.

[0048] In the third and fourth aspects, in a third possible manner, the second indication information is used to indicate that reference signal resources corresponding to a number of antenna ports greater than U in the second reference signal resources are not used for CSI determination, or the second indication information is used to indicate that reference signal resources corresponding to a number of antenna ports less than or equal to U in the second reference signal resources are used for channel state information (CSI) determination, where U is a positive integer. The CSI is determined based on the second indication information.

[0049] Exemplarily, the antenna ports corresponding to the reference signal resources whose number of corresponding antenna ports in the second reference signal resource is less than or equal to U belong to the transmitting antenna ports currently used by the network device.

[0050] Exemplarily, U is less than or equal to the number of transmit antenna ports currently used by the network device.

[0051] Based on this solution, the network device can indicate to the terminal device which reference signal resources among the currently activated reference signal resources can continue to be used to determine the CSI according to the currently used transmitting antenna port, thereby helping to improve the accuracy of the CSI measurement and further optimizing the network device's scheduling of the terminal device.

[0052] In the fifth aspect, a communication method is provided, including: receiving third indication information, the third indication information is used to indicate the association relationship between multiple energy-saving modes and reference signal resources; receiving fourth indication information, the fourth indication information indicates the first energy-saving mode among multiple energy-saving modes; and determining CSI based on the reference signal resources associated with the first energy-saving mode.

[0053] In the sixth aspect, a communication method is provided, including: sending third indication information, the third indication information is used to indicate the association relationship between multiple energy-saving modes and reference signal resources; sending fourth indication information, the fourth indication information indicates the first energy-saving mode among multiple energy-saving modes, and the fourth indication information is used by the terminal device to determine the reference signal resources associated with the first energy-saving mode.

[0054] For example, the antenna ports corresponding to the reference signal resources corresponding to any energy-saving mode may be the same.

[0055] Exemplarily, the first energy-saving mode is determined by the network device according to the currently used transmitting antenna port.

[0056] According to the communication method provided in this application, a network device can indicate to a terminal device the energy-saving mode that matches the currently used transmit antenna port. The terminal device can then determine the reference signal resources used to determine CSI based on the association between the energy-saving mode and the reference signal resources pre-configured by the network device. In this way, the antenna port from which the network device transmits the reference signal as understood by the terminal device is consistent with the antenna port from which the network device actually transmits the reference signal. Thus, the terminal device can determine more accurate CSI based on measurements of the reference signal transmitted by the antenna port from which the reference signal is actually transmitted.

[0057] Optionally, the association relationship between multiple energy-saving modes and reference signal resources is: the association relationship between multiple energy-saving modes and resource configuration, or the association relationship between multiple energy-saving modes and reporting configuration, and both resource configuration and reporting configuration are associated with reference signal resources.

[0058] Optionally, the third indication information is carried by radio resource control (RRC) signaling; and / or the fourth indication information is carried by RRC signaling, media access control control element (MAC CE) signaling or downlink control information (DCI).

[0059] In the seventh aspect, a communication method is provided, including: receiving a third signaling, the third signaling indicating L1 resource configurations, and / or L2 reporting configurations, L1 and L2 are integers greater than or equal to 1, and the resource configurations and the reporting configurations are both associated with reference signal resources; receiving a fifth indication information, the fifth indication information being used to deactivate at least one resource configuration among the L1 resource configurations, and / or to deactivate at least one reporting configuration among the L2 reporting configurations; determining CSI based on the resource configurations that have not been deactivated among the L1 resource configurations, or determining CSI based on the reporting configurations that have not been deactivated among the L2 reporting configurations.

[0060] In the eighth aspect, a communication method is provided, including: sending a third signaling, the third signaling indicating L1 resource configurations, and / or L2 reporting configurations, L1 and L2 are integers greater than or equal to 1, and the resource configuration and the reporting configuration are both associated with reference signal resources; sending a fifth indication information, the fifth indication information is used to deactivate at least one resource configuration among the L1 resource configurations, and / or deactivate at least one reporting configuration among the L2 reporting configurations.

[0061] Exemplarily, the antenna ports corresponding to the reference signal resources associated with one resource configuration or reporting configuration are the same.

[0062] Exemplarily, the antenna ports corresponding to the reference signal resources associated with the non-deactivated resource configuration or reporting configuration belong to the number of transmitting antenna ports currently used by the network device.

[0063] Optionally, the fifth indication information includes an index of the at least one resource configuration and / or an index of the at least one reporting configuration.

[0064] According to the method provided in the present application, the network device can deactivate some inappropriate resource configurations or reporting configurations based on the currently used transmitting antenna port, so that the terminal device can determine the CSI based on the resource configuration or reporting configuration of the transmitting antenna port used by the network device according to the antenna port corresponding to the associated reference signal resource, which is conducive to improving the accuracy of the CSI measurement and further optimizing the scheduling of the terminal device by the network device.

[0065] Optionally, the fifth indication information is used to deactivate at least one resource configuration among the L1 resource configurations, including: the fifth indication information is used to deactivate all reference signal resources associated with the at least one resource configuration.

[0066] Optionally, the fifth indication information is used to deactivate at least one of the L2 reporting configurations, including: the fifth indication information is used to deactivate all reference signal resources associated with the resource configuration associated with the at least one reporting configuration, and or the fifth indication information is used to deactivate the uplink resources associated with the at least one reporting configuration.

[0067] Optionally, the reporting configuration is a periodic reporting configuration.

[0068] In a ninth aspect, a communication device is provided, comprising modules or units for executing the method in any one of the above aspects or any possible implementation of the aspect.

[0069] In a tenth aspect, a communication device is provided, comprising a processor. The processor is coupled to a memory and configured to execute instructions in the memory, causing the device to perform the method of any of the aforementioned aspects or any possible implementation thereof. Optionally, the device further comprises a memory. Optionally, the device further comprises an interface circuit, the processor being coupled to the interface circuit.

[0070] In an eleventh aspect, a processor is provided, comprising: an input circuit, an output circuit, and a processing circuit. The processing circuit is configured to receive a signal through the input circuit and transmit a signal through the output circuit, so that the processor executes the method of any of the above aspects or any possible implementation of that aspect.

[0071] In a specific implementation, the processor may be a chip, the input circuit may be an input pin, the output circuit may be an output pin, and the processing circuit may be a transistor, a gate circuit, a trigger, or various logic circuits. The input signal received by the input circuit may be, for example, but not limited to, received and input by a receiver, and the signal output by the output circuit may be, for example, but not limited to, output to and transmitted by a transmitter. The input circuit and the output circuit may be the same circuit, which functions as an input circuit and an output circuit at different times. The embodiments of the present application do not limit the specific implementation of the processor and various circuits.

[0072] In a twelfth aspect, a communication device is provided, comprising a processor and a memory. The processor is configured to read instructions stored in the memory and receive signals via a receiver and transmit signals via a transmitter to execute the method of any of the above aspects or any possible implementation of that aspect.

[0073] Optionally, there are one or more processors and one or more memories.

[0074] Optionally, the memory may be integrated with the processor, or the memory may be provided separately from the processor.

[0075] In the specific implementation process, the memory can be a non-transitory memory, such as a read-only memory (ROM), which can be integrated with the processor on the same chip or can be set on different chips. The embodiments of the present application do not limit the type of memory and the setting method of the memory and the processor.

[0076] The processing device in the above-mentioned aspect 12 can be a chip. The processor can be implemented by hardware or by software. When implemented by hardware, the processor can be a logic circuit, an integrated circuit, etc.; when implemented by software, the processor can be a general-purpose processor, which is implemented by reading the software code stored in the memory. The memory can be integrated in the processor or can be located outside the processor and exist independently.

[0077] In the thirteenth aspect, a computer program product is provided, which includes: a computer program (also called code, or instruction), which, when executed, enables a computer to execute a method in any one of the above aspects or any possible implementation of that aspect.

[0078] In the fourteenth aspect, a computer-readable medium is provided, which stores a computer program (also referred to as code, or instructions) which, when run on a computer, enables the computer to execute a method in any of the above aspects or any possible implementation of that aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0079] Figure 1 is a schematic diagram of a communication system suitable for the present application.

[0080] Figure 2 This is a schematic diagram of a communication method provided by this application.

[0081] Figure 3 FIG. 4 is a diagram illustrating one method of selecting an antenna port.

[0082] Figure 4 This is a schematic diagram of an arrangement of antenna ports.

[0083] Figure 5 The figure is a schematic diagram of a method for selecting an antenna port.

[0084] Figure 6 FIG. 4 is a diagram illustrating one method of selecting an antenna port.

[0085] Figure 7 It is a schematic diagram of a method for determining the number of antenna ports in a first dimension and the number of antenna ports in a second dimension.

[0086] Figure 8 It is a schematic diagram of another method for determining the number of antenna ports in the first dimension and the number of antenna ports in the second dimension.

[0087] Figures 9 to 13 They are respectively schematic diagrams of a communication method provided by this application.

[0088] Figure 14 It is a schematic structural diagram of the communication device provided in this application.

[0089] Figure 15 It is a schematic structural diagram of the network device provided in this application.

[0090] Figure 16 It is a schematic structural diagram of the terminal device provided in this application. DETAILED DESCRIPTION

[0091] The technical solution in this application will be described below with reference to the accompanying drawings.

[0092] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: long term evolution (LTE) system, fifth generation (5G) system, new radio (NR) or other communication systems that may appear in the future.

[0093] Figure 1 FIG. 1 shows a schematic diagram of a communication system applicable to the present application. Figure 1 As shown, the communication system 100 may include at least one network device, such as Figure 1 The network device 110 shown; the communication system 100 may also include at least one terminal device, such as Figure 1 The terminal device 120 shown in FIG. Network device 110 can send a reference signal to terminal device 120 based on the reference signal resource. Terminal device 120 can obtain CSI by measuring the reference signal. Terminal device 120 can then report the CSI to network device 110, which can perform scheduling based on the CSI, such as selecting an appropriate modulation and coding scheme (MCS) for downlink data transmission.

[0094] The terminal device in the embodiments of the present application may refer to user equipment (UE), access terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device. The terminal device may also be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a 5G network or a terminal device in a future evolved public land mobile network (PLMN), etc., and the embodiments of the present application are not limited thereto.

[0095] The network device in the embodiment of the present application can be a device for communicating with a terminal device. For example, the network device can be a base station, an evolved NodeB (eNodeB), a transmission reception point (TRP), a next generation NodeB (gNB) in a 5G mobile communication system, a base station in a future mobile communication system, or an access node in a WiFi system. For another example, the network device can also be a module or unit that completes part of the functions of a base station, for example, a centralized unit (CU) or a distributed unit (DU). For another example, the network device can also be a wireless controller, a relay station, an access point, a vehicle-mounted device, a wearable device, an access network device in other communication systems that will evolve in the future, etc. in a cloud radio access network (CRAN) scenario. This application does not limit the specific technology and specific device form adopted by the network device.

[0096] In an embodiment of the present application, a terminal device or a network device includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer. The hardware layer includes hardware such as a central processing unit (CPU), a memory management unit (MMU), and memory (also called main memory). The operating system can be any one or more computer operating systems that implement business processing through processes, such as a Linux operating system, a Unix operating system, an Android operating system, an iOS operating system, or a Windows operating system. The application layer includes applications such as browsers, address books, word processing software, and instant messaging software. In addition, the embodiment of the present application does not specifically limit the specific structure of the execution subject of the method provided in the embodiment of the present application. As long as it is possible to communicate according to the method provided in the embodiment of the present application by running a program that records the code of the method provided in the embodiment of the present application, for example, the execution subject of the method provided in the embodiment of the present application can be a terminal device or a network device, or a functional module in a terminal device or a network device that can call a program and execute the program.

[0097] In addition, various aspects or features of the present application can be implemented as methods, devices or products using standard programming and / or engineering techniques. The term "product" as used in this application covers computer programs that can be accessed from any computer-readable device, carrier or medium. For example, computer-readable media may include, but are not limited to: magnetic storage devices (e.g., hard disks, floppy disks or tapes, etc.), optical disks (e.g., compact discs (CDs), digital versatile discs (DVDs), etc.), smart cards and flash memory devices (e.g., erasable programmable read-only memories (EPROMs), cards, sticks or key drives, etc.). In addition, the various storage media described herein may represent one or more devices and / or other machine-readable media for storing information. The term "machine-readable medium" may include, but is not limited to, wireless channels and various other media capable of storing, containing and / or carrying instructions and / or data.

[0098] Before introducing the method of this application, first, a few explanations are given.

[0099] 1. In this application, reference signals can be used for channel measurement, interference measurement, etc., such as measuring reference signal receiving quality (RSRQ), signal-to-noise ratio (SNR), signal to interference plus noise ratio (SINR, referred to as signal to interference plus noise ratio), channel quality indicator (CQI), precoding matrix indicator (PMI) and other parameters.

[0100] Reference signal resources can be used to configure reference signal transmission properties, such as time-frequency resource location, port mapping, power factor, and scrambling code. For details, please refer to existing technologies. Network devices can send reference signals based on reference signal resources, and terminal devices can receive reference signals based on reference signal resources.

[0101] Specifically, the reference signals involved in the embodiments of the present application may include, for example, one or more of the following reference signals: a channel state information reference signal (CSI-RS), a synchronization signal block (SSB), or a sounding reference signal (SRS). Correspondingly, the reference signal resources may include CSI-RS resources, SSB resources, or SRS resources.

[0102] It should be noted that the above-mentioned SSB can also be called a synchronization signal / physical broadcast channel block (SS / PBCH block), and the corresponding SSB resource can also be called a synchronization signal / physical broadcast channel block resource (SS / PBCH block resource), which can be abbreviated as SSB resource. In some cases, SSB can also refer to SSB resource.

[0103] 2. Antenna port: A transmitting antenna identified by the receiving device, or a spatially distinguishable transmitting antenna. Each virtual antenna can be configured with an antenna port. Each virtual antenna can be a weighted combination of multiple physical antennas, and each antenna port can correspond to a reference signal port.

[0104] Scenario 1: To save energy, network equipment dynamically shuts down some transmission channels.

[0105] Scenario 2: To save energy, the network device uses different transmission strategies for near-end and far-end devices. For example, the near-end device uses 16Tx, while the far-end device uses 32Tx. As the devices move, the network device may shut down some transmission channels.

[0106] In the above scenario, the transmit antenna port used by the network device will change. In other words, the antenna port used by the network device to send the reference signal will be different from the antenna port corresponding to the previously configured reference signal resource. If the terminal device still receives the reference signal based on the antenna port corresponding to the previously configured reference signal resource, it may cause the terminal device to mistake the interference signal for the reference signal, resulting in inaccurate CSI determined by the terminal device. In other words, the CSI determined by the terminal device may not accurately reflect the actual channel conditions.

[0107] To this end, the present application provides a variety of methods to solve this problem. In some methods, the network device notifies the terminal device of the antenna port that actually sends the reference signal, so that the terminal device can obtain more accurate CSI by measuring the reference signal sent by the antenna port that actually sends the reference signal. In some methods, the network device can directly or indirectly activate the reference signal resource that matches the antenna port currently used by the network device, or the network device can directly or indirectly indicate to the terminal device the reference signal resource that matches the antenna port currently used by the network device among the currently activated reference signal resources or the previously configured reference signal resources, so that the terminal device can obtain more accurate CSI by measuring the reference signal sent by the antenna port that actually sends the reference signal based on the indication of the network device.

[0108] It should be understood that the method embodiments described below are based on network devices and terminal devices as examples, and the network device can also be replaced by a chip configured in the network device, and the terminal device can also be replaced by a chip configured in the terminal device.

[0109] Figure 2 This is a schematic flow chart of a communication method provided by this application. Figure 2 Each step shown is explained.

[0110] S210: The network device sends a first signaling to the terminal device. Correspondingly, the terminal device receives the first signaling.

[0111] The first signaling indicates a first reference signal resource. The first reference signal resource corresponds to P antenna ports, or in other words, the first reference signal resource includes P antenna ports, where P is a positive integer.

[0112] Exemplarily, the first reference signal resource may be a currently activated reference signal resource. For example, the first signaling is RRC signaling, and the first reference signal resource is a periodic reference signal resource. For another example, the first signaling is a MAC CE, and the first reference signal resource is a semi-persistent reference signal resource.

[0113] Exemplarily, the first reference signal resource may also be a reference signal resource that has been configured but not activated (or not triggered). For example, the first reference signal resource is an aperiodic reference signal resource, and the first signaling is RRC signaling or MAC CE.

[0114] S220: The network device determines Q antenna ports among the P antenna ports.

[0115] Exemplarily, the network device may determine the Q antenna ports based on the currently used transmit antenna ports, wherein the Q antenna ports belong to the currently used transmit antenna ports of the network device.

[0116] S230: The network device sends first indication information to the terminal device. Correspondingly, the terminal device receives the first indication information.

[0117] Exemplarily, the first indication information may be sent simultaneously with the first signaling, or the first signaling may be sent first and then the first indication information.

[0118] S240: The terminal device determines, according to the first indication information, Q antenna ports among the P antenna ports for determining CSI, where Q is a positive integer and P>Q.

[0119] In one example, the network device may autonomously determine the Q antenna ports and then indicate the Q antenna ports to the terminal device via first indication information. After receiving the first indication information, the terminal device may determine the Q antenna ports. Alternatively, the network device may indicate antenna ports other than the Q antenna ports among the P antenna ports to the terminal device via the first indication information, thereby allowing the terminal device to learn the Q antenna ports.

[0120] For example, the first indication information may be information about the Q antenna ports. For example, the first indication information may be an index of the Q antenna ports, or an index of a set or group corresponding to the Q antenna ports. The index of the set or group corresponding to the antenna port may be agreed upon in advance by the terminal device and the network device, or may be indicated by other indication information. Alternatively, the first indication information may be information about antenna ports other than the Q antenna ports among the P antenna ports.

[0121] In another example, the network device may determine that it is necessary to enter a first energy-saving mode. The first energy-saving mode is associated with the Q antenna ports. The network device's determination of the first energy-saving mode is equivalent to determining the Q antenna ports. Furthermore, the network device may indicate the first energy-saving mode to the terminal device through first indication information, and the terminal device may determine the Q antenna ports associated with the first energy-saving mode based on a preset rule.

[0122] It should be understood that the predetermined rule is a preset rule followed by both the network device and the terminal device. The preset rule can be pre-configured by the network device, such as through RRC signaling configuration or MAC CE signaling indication, or DCI signaling indication, or can be specified by the protocol.

[0123] Exemplarily, the preset rule may specify which antenna ports corresponding to the currently activated reference signal resources in the first energy-saving mode can be used to determine the CSI, that is, among the antenna ports corresponding to the currently activated reference signal resources, on which antenna ports the network device will send reference signals or on which antenna ports the terminal device can receive reference signals. Exemplarily, the above-mentioned preset rule may also be one of multiple prediction rules, and the network device may indicate the prediction rule to the terminal device. For example, the network device may indicate the preset rule through RRC signaling, MAC CE signaling, or DCI signaling.

[0124] For example, the preset rule may specify that in the first energy-saving mode, y(P) antenna ports with smaller indices among the antenna ports corresponding to the currently activated reference signal resources are used to determine the CSI. y(P) is a function of P, for example, y(P) = P / 2. Alternatively, y(P) may be replaced by a specific value.

[0125] The relationship between P and Q is illustrated below with an example.

[0126] Relationship 1

[0127] The P antenna ports are divided into 2*A1 groups in ascending order of antenna port index, with each group including A2 antenna ports. Q / (2*A1) antenna ports in each group of A2 antenna ports belong to the Q antenna ports. A1 is a positive integer, and A2 is an integer greater than or equal to 2. Optionally, A1>2, and / or A2>2.

[0128] In example 1, in each group of A2 antenna ports, the Q / (2*A1) antenna ports with larger indexes belong to the Q antenna ports.

[0129] Example 2: In each group of A2 antenna ports, Q / (2*A1) antenna ports with smaller indexes belong to the Q antenna ports.

[0130] Example three: In the first A1 groups among the 2*A1 groups, the Q / (2*A1) antenna ports with larger indexes among the A2 antenna ports in each group belong to the Q antenna ports, and in the last A1 groups among the 2*A1 groups, the Q / (2*A1) antenna ports with smaller indexes among the A2 antenna ports in each group belong to the Q antenna ports.

[0131] Example 4: In the first A1 groups among the 2*A1 groups, the Q / (2*A1) antenna ports with smaller indexes among the A2 antenna ports in each group belong to the Q antenna ports, and in the last A1 groups among the 2*A1 groups, the Q / (2*A1) antenna ports with larger indexes among the A2 antenna ports in each group belong to the Q antenna ports.

[0132] Optionally, A1 may be the number of antenna ports in the first dimension, and A2 may be the number of antenna ports in the second dimension. The first dimension may be a horizontal dimension, and the second dimension may be a vertical dimension. It should be understood that the first dimension may also be a vertical dimension, and the second dimension may also be a horizontal dimension.

[0133] by Figure 3 The antenna port arrangement shown in the figure is used as an example to illustrate. Figure 3 , P=32, A1=8, Q=16. The 32 antenna ports can be divided into 16 groups as shown in the figure, with 2 antenna ports in each group, and 1 antenna port in each group belongs to the Q (Q=16) antenna ports.

[0134] Corresponding to Example 1, the Q antenna ports include: antenna ports with odd indexes among the 32 antenna ports.

[0135] Corresponding to Example 2, the Q antenna ports include: antenna ports with even indexes among the 32 antenna ports.

[0136] Corresponding to Example 3, the Q antenna ports include: antenna ports with odd indexes in the first to eighth groups, and antenna ports with even indexes in the ninth to sixteenth groups.

[0137] Corresponding to Example 4, the Q antenna ports include: antenna ports with even indexes in the first to eighth groups, and antenna ports with odd indexes in the ninth to sixteenth groups.

[0138] It should be understood that the relationship between P and Q specified by the preset rules can satisfy Relationship 1. Optionally, the preset rules can also specify the values of all or part of A1, A2, and Q / (2*A1). Alternatively, the relationship between P and Q determined autonomously by the network device can satisfy Relationship 1.

[0139] Optionally, A1 may be equal to P1, and A2 may be equal to P2. Alternatively, A1 may be the number of antenna ports in the first dimension, and A2 may be the number of antenna ports in the second dimension. Alternatively, A1 may be the number of horizontal antenna ports, and A2 may be the number of vertical antenna ports.

[0140] Relationship 2

[0141] The P antenna ports are divided into a first polarization direction port group and a second polarization direction port group according to the polarization direction. The Q / 2 antenna ports in the first polarization direction port group belong to the Q ports, and the Q / 2 antenna ports in the second polarization direction port group belong to the Q ports.

[0142] Optionally, Q / 2 ports with larger indexes in each group of P / 2 ports belong to the Q ports.

[0143] Alternatively, Q / 2 ports with smaller indexes in each group of P / 2 ports belong to the Q ports.

[0144] Alternatively, Q / 2 ports with larger indexes among P / 2 ports in the first of the two groups belong to the Q ports, and Q / 2 ports with smaller indexes among P / 2 ports in the second group belong to the Q ports.

[0145] Alternatively, Q / 2 ports with smaller indexes among P / 2 ports in the first of the two groups belong to the Q ports, and Q / 2 ports with larger indexes among P / 2 ports in the second group belong to the Q ports.

[0146] Take P=32 and Q / 2=8 as an example. Figure 4 , the first polarization direction port group consists of antenna ports indexed from 0 to 15, and the second polarization direction port group consists of antenna ports indexed from 16 to 31. That is, the first polarization direction port group consists of antenna ports indicated by thick solid lines in the figure, and the second polarization direction port group consists of antenna ports indicated by thin solid lines in the figure. The Q antenna ports include 8 antenna ports indexed from 0 to 15 and 8 antenna ports indexed from 16 to 31. For example, the Q antenna ports may include antenna ports indexed from 8 to 15 and from 16 to 23. Alternatively, the Q antenna ports may include antenna ports indexed from 0 to 7 and from 16 to 23. Alternatively, the Q antenna ports may include antenna ports indexed from 8 to 15 and from 24 to 31. Alternatively, the Q antenna ports may include antenna ports indexed from 0 to 7 and from 24 to 31.

[0147] It should be understood that the relationship between P and Q specified by the preset rule can satisfy Relationship 2. Optionally, the preset rule can also specify a value of Q / 2. Alternatively, the relationship between P and Q determined autonomously by the network device can satisfy Relationship 2.

[0148] Relationship Three

[0149] In this relationship, network devices and terminal devices follow the following definitions:

[0150] P = 2*P1*P2, where P1 is the number of antenna ports in the first dimension and P2 is the number of antenna ports in the second dimension. Q = 2*Q1*Q2, where Q1 is the number of antenna ports in the first dimension and Q2 is the number of antenna ports in the second dimension. P1, P2, Q1, and Q2 are all positive integers. P1, P2, Q1, and Q2 can satisfy: Q1 = P1 and Q2 < P2. Alternatively, Q1 < P1 and Q2 < P2.

[0151] The first dimension may be a horizontal dimension, and the second dimension may be a vertical dimension, but this application does not limit this.

[0152] Optionally, a preset rule may specify or the network device may indicate an offset value between Q1 and P1 and / or an offset value between Q2 and P2, so that the terminal device may determine the sizes of Q1 and Q2 based on the offset value.

[0153] For example, if the offset between Q1 and P1 is not specified, the offset between Q1 and P1 is 0. Furthermore, if the offset between Q2 and P2 is 4, then Q1 = P1 and Q2 = P1-4. Alternatively, the offset can be (0, 4), then Q1 = P1 and Q2 = P1-4.

[0154] Furthermore, the preset rule can be further specified to determine which ports the Q antenna ports are. For example, the Q1 first-dimension antenna ports can be specified as the Q1 antenna ports with smaller first-dimension indexes, and the Q2 second-dimension antenna ports can be specified as the Q2 antenna ports with smaller second-dimension indexes.

[0155] Alternatively, the network device may also indicate the value of Q1 and / or Q2.

[0156] Combine Figure 5 and Figure 6 Let’s give an example. Figure 5 and Figure 6 In the antenna ports shown, P=32, P1=8, and P2=2. Figure 5 In the example shown, Q1=P1=8, Q2=1. Figure 6 In the example shown, Q1=4, Q2=1.

[0157] like Figure 5 As shown, if the Q1 first-dimension antenna ports are the Q1 antenna ports with smaller first-dimension indexes, then the 16 antenna ports in the first row are the Q ports. If the Q1 first-dimension antenna ports are the Q1 antenna ports with larger first-dimension indexes, then the 16 antenna ports in the second row can be the Q antenna ports.

[0158] like Figure 6 As shown, if the Q1 first-dimensional antenna ports are the Q1 antenna ports with smaller indexes in the first dimension, and the Q2 second-dimensional antenna ports are the Q2 antenna ports with smaller indexes in the second dimension, then the 8 antenna ports in the dotted box can be the Q antenna ports.

[0159] It should be understood that the relationship between P and Q described above is only an example, and this application does not limit Q and P to necessarily follow the above relationship. In addition, the relationship between P and Q described above can also be used in combination, and this application does not limit this.

[0160] It should also be understood that in the various embodiments of the present application, grouping is only a method for better describing port selection. The network device / terminal device may or may not perform this action, and this application does not impose any limitation on this.

[0161] Optionally, assuming that the identifier or index of the first reference signal resource is 1, the network device may configure the terminal device to use the reference signal resource with the identifier or index of 1 on multiple carriers or multiple bandwidth parts (BWP). Then, the first indication information may indicate that Q antenna ports out of P antenna ports corresponding to the reference signal resource with the index of 1 on a specific carrier or BWP are used to determine the CSI.

[0162] Optionally, the first indication information may further indicate a target transmit power, where the target transmit power is the transmit power of the network device and is determined based on the Q antenna ports. The terminal device may perform channel estimation based on the target transmit power to determine the CSI.

[0163] For example, the first indication information may indicate the target transmit power by indicating a deviation between the target transmit power and the first transmit power. The first transmit power is a transmit power determined by the network device based on the P antenna ports and indicated to the terminal device.

[0164] Optionally, the network device may also determine the target transmit power according to the Q antenna ports and the first transmit power.

[0165] For example, the association between the number of changes in the number of antenna ports and the transmit power adjustment amount can be preconfigured or predefined, so that the terminal device can determine the corresponding transmit power adjustment amount based on the difference obtained by subtracting Q from P. For example, the sum (the transmit power adjustment amount is a negative value) or the difference (the transmit power adjustment amount is a positive value) of the first transmit power and the transmit power adjustment amount is the target transmit power.

[0166] In summary, according to the communication method provided by the present application, when the number of transmission channels changes, that is, when the transmitting antenna port used by the network device changes, the network device can indicate to the terminal device, based on the currently used transmitting antenna port, that Q antenna ports corresponding to the reference signal resource (that is, the first reference signal resource) that has been activated or previously configured but not activated can continue to be used to determine the antenna port of the CSI. In this way, the antenna port of the network device that the terminal device understands as sending the reference signal is consistent with the antenna port of the network device that actually sends the reference signal, so that the terminal device can determine a more accurate CSI based on the measurement of the reference signal sent by the antenna port that actually sends the reference signal, that is, the CSI determined by the terminal device can reflect the actual situation of the channel, thereby optimizing the scheduling of the terminal device by the network device.

[0167] Optionally, the method may further include:

[0168] S250: The terminal device determines the CSI based on the Q antenna ports and the first information.

[0169] S260: The terminal device sends the CSI to the network device. Correspondingly, the network device receives the CSI.

[0170] The first information indicates that the number of antenna ports in the first dimension is B1, and the number of antenna ports in the second dimension is B2, where both B1 and B2 are positive integers. Alternatively, B1 < C1, and B2 < C2. Alternatively, B1 < C1, and B2 = C2. Alternatively, B1 < C1, and B2 < C2.

[0171] C1 is the number of antenna ports in the first dimension indicated by the first codebook configuration information associated with the first reference signal resource, and C2 is the number of antenna ports in the second dimension indicated by the first codebook configuration information.

[0172] The first dimension may be a horizontal dimension, and the second dimension may be a vertical dimension, but this application does not limit this.

[0173] It can be understood that the first codebook configuration information is the codebook configuration information associated when the number of ports corresponding to the first reference signal resource does not change, that is, the first codebook configuration information is configured based on P antenna ports. C1 and C2 are the number of first-dimensional antenna ports and the number of second-dimensional antenna ports used when determining CSI when P antenna ports are used for channel measurement. When the number of antenna ports used for channel measurement becomes Q, the number of first-dimensional antenna ports and / or the number of second-dimensional antenna ports used when determining CSI will also change accordingly.

[0174] Alternatively, B1 = Q1, B2 = Q2, C1 = P1, C2 = P2.

[0175] Alternatively, 2*C1*C2=P, 2*B1*B2=Q.

[0176] Or, C1≤P1,C2≤P2.

[0177] Or, 2*C1*C2≤P, 2*B1*B2≤Q.

[0178] Or, 2*C1*C2≤P.

[0179] For the meaning or relationship of Q1, Q2 and Q, please refer to the previous description.

[0180] The following combination Figure 7 and Figure 8 , and give examples of possible values of C1, C2, B1, and B2. Figure 7 and Figure 8 In the example, (B1, B2) can be determined based on the connecting line from (C1, C2) to (B1, B2). The connecting line from (C1, C2) to (B1, B2) can include one or more connecting lines.

[0181] For example, Figure 7 In the example, if P = 64 and (C1, C2) = (8, 4), then when Q = 32, (B1, B2) can be (8, 2) or (4, 4). If P = 64 and (C1, C2) = (16, 2), then when Q = 16, (B1, B2) can be (4, 2) or (8, 1).

[0182] For example, Figure 8 In the example, if P = 64 and (C1, C2) = (8, 4), then when Q = 32, (B1, B2) can be (8, 2) or (4, 4). If P = 24 and (C1, C2) = (4, 3), then when Q = 16, (B1, B2) can be (4, 2).

[0183] Optionally, a correspondence between {P, (C1, C2)} and {Q, (B1, B2)} is predefined. Then, once the values of P, C1, C2, and Q are determined, the values of B1 and B2 can be determined based on the predefined correspondence.

[0184] Optionally, the first information may also be sent by the network device. For example, the network device may carry the first information via RRC signaling, MACCE, or DCI.

[0185] For example, the first information may indicate the values of B1 and B2, or may indicate the offset between B1 and C1 and / or the offset between B2 and C2. For example, if the first information indicates (0, 4), then B1 = C1 and B2 = C2-4.

[0186] For another example, B1 and B2 have a preset relationship, and the first information can indicate the values of B1 and B2 by indicating the value of B1 or B2. For example, the first information can be 1-bit information, such as when the first information is 0, it indicates that B1 = C1 and B2 = C2-1.

[0187] Alternatively, the offset value between B1 and C1 and the offset value between B2 and C2 have a preset relationship, and the first information can indicate the offset value between B1 and C1 and the offset value between B2 and C2 by indicating the offset value between B1 and C1 or the offset value between B2 and C2.

[0188] The first information and the aforementioned first indication information can be carried through the same signaling or through different signaling, and this application does not limit this.

[0189] It can be understood that since the number of first-dimensional antenna ports and the number of second-dimensional antenna ports used by the terminal device to determine the CSI are determined based on the antenna ports that the network device actually sends the reference signal, the CSI determined by the terminal device is more accurate.

[0190] It should be understood that in each embodiment of the present application, the terminal device needs to determine the PMI based on the number of antenna ports in the first dimension, B1, and the number of antenna ports in the second dimension, B2. For example, the terminal device selects a DFT vector that approximates the current channel eigenvector based on the current CSI measurement, where the DFT vector is the Kronecker product of the first DFT vector and the second DFT vector; wherein the dimension of the first DFT vector is the number of antenna ports in the first dimension, B1, and the dimension of the second DFT vector is the number of antenna ports in the second dimension, B2.

[0191] Example:

[0192]

[0193] Among them, u l is the first DFT vector, u m is the second DFT vector, v l,m is the Kronecker product of the first DFT vector and the second DFT vector. l,m It can be called a precoding matrix or a candidate precoding matrix.

[0194] In addition, it should be noted that if the first reference signal resource has been activated through the first signaling, the terminal device can receive the reference signal based on the Q antenna ports in step S250. If the first reference signal resource has not been activated through the first signaling, the network device must first activate the first reference signal resource and then receive the reference signal based on the Q antenna ports in step S250. For example, when the first reference signal resource is an aperiodic reference signal resource and the first signaling is a MAC CE, the network device can activate the first reference signal resource by sending a DCI. Figure 9 This is a schematic flow chart of a communication method provided by this application. Figure 9 The steps in the method 300 are described below.

[0195] S310: The network device sends a second signaling #1 (ie, an example of the second signaling) to the terminal device. Correspondingly, the terminal device receives the second signaling #1. The second signaling #1 indicates a second reference signal resource #1 (ie, an example of the second reference signal resource).

[0196] The second reference signal resource #1 may include one or more reference signal resources, or the second reference signal resource #1 may include one or more groups of reference signal resources.

[0197] Illustratively, the antenna ports corresponding to the reference signal resources in the second reference signal resource #1 may be the same or different.

[0198] Exemplarily, the second reference signal resource #1 may be a periodic reference signal resource. In this case, the second signaling #1 may be RRC signaling, but this application is not limited to this. Alternatively, the second reference signal resource #1 may be a semi-persistent reference signal resource. In this case, the second signaling #1 may be a MAC CE, but this application is not limited to this.

[0199] S320: The network device sends second indication information #1 (ie, an example of the second indication information) to the terminal device. Correspondingly, the terminal device receives the second indication information #1.

[0200] The second indication information #1 is used to deactivate the second reference signal resource #1 and activate the third reference signal resource.

[0201] The third reference signal resource may include one or more reference signal resources, or the third reference signal resource may include one or more groups of reference signal resources.

[0202] Exemplarily, the antenna ports corresponding to the reference signal resources in the third reference signal resources may be the same or different.

[0203] Exemplarily, the antenna port corresponding to each reference signal resource in the third reference signal resource belongs to a transmitting antenna port currently used by the network device.

[0204] Exemplarily, the third reference signal resource may be a periodic reference signal resource, a semi-persistent reference signal resource, or an aperiodic reference signal resource.

[0205] Exemplarily, the second indication information #1 may be RRC signaling, MAC CE or DCI, which is not limited in this application.

[0206] Optionally, the association between the second reference signal resource #1 and the third reference signal resource may be pre-configured. In this case, the second indication information #1 may implicitly indicate deactivation of the second reference signal resource #1 and activation of the third reference signal resource by carrying information about the second reference signal resource #1.

[0207] Optionally, the second indication information #1 may carry information of the second reference signal resource #1 and information of the third reference signal resource, thereby indicating to deactivate the second reference signal resource #1 and activate the third reference signal resource.

[0208] For example, the reference signal resource information may be an index of the reference signal resource. When the second reference signal resource #1 or the third reference signal resource is one or more groups of reference signal resources, the corresponding reference signal resource information may be an index of the group or an index of each reference signal resource in the group.

[0209] It should be understood that in various embodiments of the present application, one or more groups of reference signal resources may refer to one or more reference signal resource sets.

[0210] S330, the terminal device determines the CSI according to the second indication information #1.

[0211] The network device sends a reference signal based on the third reference signal resource, the terminal device receives a reference signal based on the third reference signal resource, and the terminal device can determine the CSI by measuring the reference signal sent based on the third reference signal resource.

[0212] Optionally, the terminal device determines the CSI based on the second indication information #1, including: the terminal device determines the CSI based on the second indication information #1 and the second information.

[0213] The second information indicates that the number of antenna ports in the first dimension is B1 and the number of antenna ports in the second dimension is B2, where both B1 and B2 are positive integers. The first dimension may be a horizontal dimension and the second dimension may be a vertical dimension, but this application does not limit this.

[0214] It should be understood that B1 and B2 are the number of antenna ports in the first dimension and the second dimension used by the terminal device to determine CSI.

[0215] In this application, B1, B2, C1, and C2 meet the following requirements:

[0216] B1=C1, and B2<C2. Alternatively, B1<C1, and B2=C2. Alternatively, B1<C1, and B2<C2.

[0217] C1 is the number of antenna ports in the first dimension indicated by the first codebook configuration information associated with the second reference signal resource #1, and C2 is the number of antenna ports in the second dimension indicated by the first codebook configuration information.

[0218] Alternatively, B1 = Q1, B2 = Q2, C1 = P1, C2 = P2.

[0219] Alternatively, 2*C1*C2=P, 2*B1*B2=Q.

[0220] Or, C1≤P1,C2≤P2.

[0221] Or, 2*C1*C2≤P, 2*B1*B2≤Q.

[0222] Or, 2*C1*C2≤P.

[0223] Where P = 2*P1*P2, where P is the number of antenna ports corresponding to the reference signal resource with the largest number of antenna ports in the second reference signal resource #1, P1 is the number of antenna ports in the first dimension, and P2 is the number of antenna ports in the second dimension. Q = 2*Q1*Q2, where Q is the number of antenna ports corresponding to the reference signal resource with the largest number of antenna ports in the third reference signal resource, Q1 is the number of antenna ports in the first dimension, and Q2 is the number of antenna ports in the second dimension.

[0224] Optionally, an example of the values of P, Q, C1, C2, B1 and B2 can be found in Figure 7 or Figure 8 .

[0225] In an example, the second information is codebook configuration information in a reporting configuration associated with the third reference signal resource. The codebook configuration information may carry values of B1 and B2.

[0226] In another example, the second information may implicitly indicate the values of B1 and B2 by carrying an offset value between B1 and C1 and / or an offset value between B1 and C2. For example, the second indication information #1 may implicitly indicate that B1 = C1 and B2 = C2-4 by carrying an offset value (0, 4).

[0227] Optionally, the second information and the second indication information #1 may be carried through the same signaling or through different signaling, which is not limited in this application.

[0228] In another example, the correspondence between {P, (C1, C2)} and {Q, (B1, B2)} can also be predefined. Then, once the values of P, C1, C2, and Q are determined, the values of B1 and B2 can be determined based on the predefined correspondence.

[0229] Optionally, the method may further include:

[0230] S340: The terminal device reports CSI to the network device. Correspondingly, the network device receives the CSI.

[0231] In summary, according to the communication method provided by the present application, the network device can reactivate a reference signal resource (i.e., the third reference signal resource) for the terminal device based on the currently used transmit antenna port and deactivate the reference signal resource (i.e., the second reference signal resource) that does not match the currently used transmit antenna port. In this way, the reference signal resource on which the terminal device determines the CSI is consistent with the reference signal resource on which the network device actually sends the reference signal, so that the terminal device can determine a more accurate CSI based on the reference signal resource on which the reference signal is actually sent, that is, the CSI determined by the terminal device can reflect the actual situation of the channel, thereby optimizing the network device's scheduling of the terminal device.

[0232] Furthermore, since the number of antenna ports in the first dimension and the number of antenna ports in the second dimension used by the terminal device to determine the CSI are determined based on the antenna ports through which the network device actually sends the reference signal, the CSI determined by the terminal device is more accurate.

[0233] Figure 10 This is a schematic flow chart of a communication method provided by this application. Figure 10 The steps in the method 400 are described below.

[0234] S410: The network device sends second signaling #2 (i.e., another example of the second signaling) to the terminal device. Correspondingly, the terminal device receives the second signaling #2. The second signaling #2 indicates a second reference signal resource #2 (i.e., another example of the second reference signal resource).

[0235] The second reference signal resource #2 may be a plurality of groups of reference signal resources, or the second reference signal resource may include a plurality of reference signal resources. In addition, the second reference signal resource #2 is a periodic reference signal resource.

[0236] Exemplarily, at least two reference signal resources in the second reference signal resource #2 correspond to different antenna ports. For example, when the second reference signal resource #2 comprises two groups of reference signal resources, the antenna ports corresponding to the reference signal resources in each group may be the same, but the antenna ports corresponding to the two groups of reference signal resources are different, for example, one group corresponds to 12 antenna ports, while the other group corresponds to 24 antenna ports.

[0237] For example, the reporting configuration associated with the second reference signal resource #2 may be a periodic reporting configuration. Specific forms of the periodic reporting configuration may be found in the prior art.

[0238] Exemplarily, the second signaling #2 may be RRC signaling.

[0239] S420: The network device sends second indication information #2 (ie, another example of the second indication information) to the terminal device. Correspondingly, the terminal device receives the second indication information #2.

[0240] The second indication information #1 is used to deactivate part of the reference signal resources in the second reference signal resource #2. For example, if the second reference signal resource #2 is two groups of reference signal resources, the second indication information #1 may deactivate one of the groups of reference signal resources.

[0241] It can be understood that the second reference signal resource #2 consists of two parts: a deactivated reference signal resource and a non-deactivated reference signal resource.

[0242] Exemplarily, each reference signal resource in the non-deactivated reference signal resources belongs to a transmitting antenna port currently used by the network device. The corresponding antenna ports in the deactivated reference signal resources include transmitting antenna ports currently not used by the network device.

[0243] Optionally, the second indication information #2 may be RRC signaling, MAC CE or DCI.

[0244] S430, the terminal device determines the CSI according to the second indication information #2.

[0245] The network device sends a reference signal based on the non-deactivated reference signal resource in the second reference signal resource #2, and the terminal device receives a reference signal based on the non-deactivated reference signal resource. The CSI can be determined by measuring the reference signal sent on the non-deactivated reference signal resource.

[0246] For how the terminal device determines the CSI based on the measurement of the reference signal, please refer to the prior art.

[0247] Optionally, the method may further include:

[0248] S440: The terminal device reports CSI to the network device. Correspondingly, the network device receives the CSI.

[0249] In summary, according to the communication method provided in this application, the network device can deactivate inappropriate reference signal resources among the currently activated reference signal resources based on the currently used transmitting antenna port, thereby helping to improve the accuracy of CSI measurement and further optimizing the scheduling of the network device to the terminal device.

[0250] Optionally, the method may further include: the network device activating the deactivated reference signal resource.

[0251] For example, when the transmit antenna port used by the network device is the same as the antenna port corresponding to the deactivated reference signal resource, the network device can activate the deactivated reference signal resource. Thus, the terminal device can determine accurate CSI by measuring the reference signals of multiple antenna ports.

[0252] Figure 11 This is a schematic flow chart of a communication method provided by this application. Figure 11 The steps of the method 500 are described below.

[0253] S510: The network device sends second signaling #3 (i.e., another example of the second signaling) to the terminal device. Correspondingly, the terminal device receives the second signaling #3. The second signaling #3 indicates a second reference signal resource #3 (i.e., another example of the second reference signal resource).

[0254] The second reference signal resource #3 may include multiple or multiple groups of reference signal resources.

[0255] Exemplarily, at least two reference signal resources or at least two groups of reference signal resources in the second reference signal resource #3 correspond to different antenna ports.

[0256] Exemplarily, the second reference signal resource #3 may be a periodic reference signal resource. In this case, the second signaling #3 may be RRC signaling, but this application is not limited to this. Alternatively, the second reference signal resource #3 may be a semi-persistent reference signal resource. In this case, the second signaling #3 may be a MAC CE, but this application is not limited to this.

[0257] S520: The network device sends second indication information #3 (ie, another example of the second indication information) to the terminal device. Correspondingly, the terminal device receives the second indication information #3.

[0258] The second indication information #3 is used to indicate that reference signal resources in the second reference signal resource #3 whose corresponding number of antenna ports is greater than U are not used for CSI determination. Alternatively, the second indication information is used to indicate that reference signal resources in the second reference signal resource #3 whose corresponding number of antenna ports is less than or equal to U are used for CSI determination. Where U is a positive integer.

[0259] Alternatively, the second indication information #3 is used to indicate that the antenna port corresponding to the second reference signal resource #3 includes reference signal resources that do not belong to the antenna port currently used by the network device and are not used to determine CSI. Alternatively, the second indication information is used to indicate that the reference signal resources for the antenna ports corresponding to the second reference signal resource #3 all belong to the antenna ports currently used by the network device and are used to determine CSI.

[0260] Exemplarily, the second indication information #3 may carry the value of U. Alternatively, the second indication information may occupy 1 bit. For example, when the value of this bit is 1, it indicates that the reference signal resources corresponding to the number of antenna ports greater than U in the second reference signal resource #3 are not used for determining CSI.

[0261] Exemplarily, U is less than or equal to the number of transmit antenna ports currently used by the network device.

[0262] Optionally, the second indication information #3 may be RRC signaling, MAC CE or DCI.

[0263] Optionally, assuming that the identifier or index of the second reference signal resource #3 is 3, the network device may configure the terminal device to use the reference signal resource with the identifier or index 3 on multiple carriers or multiple BWPs. Then, the first indication information may indicate that Q antenna ports out of P antenna ports corresponding to the reference signal resource with the index 3 on a specific carrier or BWP are used to determine the CSI.

[0264] S530, the terminal device determines the CSI according to the second indication information #3.

[0265] Based on the second indication information #3, the terminal device can receive the reference signal only based on the reference signal resource used to determine the CSI, and determine the CSI by measuring the reference signal.

[0266] For how the terminal device determines the CSI based on the measurement of the reference signal, please refer to the prior art.

[0267] Optionally, the method may further include:

[0268] S540: The terminal device reports CSI to the network device. Correspondingly, the network device receives the CSI.

[0269] In summary, according to the communication method provided in the present application, the network device can indicate to the terminal device, based on the currently used transmitting antenna port, the reference signal resources among the currently activated reference signal resources that can continue to be used to determine the CSI, thereby helping to improve the accuracy of the CSI measurement and further optimizing the scheduling of the terminal device by the network device.

[0270] Figure 12 This is a schematic flow chart of another communication method provided by this application. Figure 12 The steps in the method 600 are described below.

[0271] S610: The network device sends third indication information to the terminal device. Correspondingly, the terminal device receives the third indication information.

[0272] The third indication information indicates associations between multiple energy-saving modes and reference signal resources.

[0273] For example, the association relationship between multiple energy-saving modes and reference signal resources may be as shown in Table 1.

[0274] Table 1

[0275] Energy saving mode Reference Signal Resources First energy-saving mode Reference signal resource #0 to reference signal resource #7 Second energy-saving mode Reference signal resource #8 to reference signal resource #15 The third energy-saving mode Reference signal resource #16 to reference signal resource #23 …… ……

[0276] In Table 1, the antenna ports corresponding to the reference signal resources corresponding to any energy-saving mode may be the same, but this application does not limit this.

[0277] It should be understood that reference signal resources may also be associated with energy-saving modes in the form of sets or groups. For example, the first energy-saving mode may be associated with reference signal group #a1, or with reference signal groups #a1 and a2 in Table 1.

[0278] Exemplarily, when the transmitting antenna ports used by the network device are different, or the transmitting antenna ports used by the network device belong to different sets, the corresponding energy-saving modes may be different.

[0279] Optionally, the association relationship between multiple energy-saving modes and reference signal resources can be: an association relationship between multiple energy-saving modes and resource configuration (CSI-ResourceConfig); or an association relationship between multiple energy-saving modes and reporting configuration (CSI-ReportConfig). Both the resource configuration and the reporting configuration are associated with reference signal resources.

[0280] That is, the reference signal resource associated with the energy-saving mode may be a reference signal resource associated with the resource configuration, or may be a reference signal resource associated with the reporting configuration.

[0281] It should be understood that the network device may send a CSI-ResourceConfig to the terminal device via an RRC message, and each CSI-ResourceConfig may include one or more reference signal resources. The reference signal resources included in the CSI-ResourceConfig are the reference signal resources associated with the CSI-ResourceConfig.

[0282] It should also be understood that the CSI-ReportConfig may include one or more reference signal resources, i.e., the CSI-ReportConfig is associated with one or more reference signal resources. The CSI-ReportConfig may also include some reporting parameters, and the terminal device may report the CSI determined based on the reference signal resources associated with the CSI-ReportConfig based on these reporting parameters. The reporting parameters may include, for example, the reporting type of the CSI (periodic, aperiodic, or semi-persistent).

[0283] It should also be understood that the reference signal resources associated with a reporting configuration are configured through resource configuration.

[0284] Illustratively, a reporting configuration may be associated with one or more resource configurations.

[0285] Optionally, the third indication information may be carried through RRC signaling, but this application does not limit this. For example, the third indication information signaling may also be carried through MAC CE.

[0286] S620: The network device sends fourth indication information to the terminal device. Correspondingly, the terminal device receives the fourth indication information.

[0287] The fourth indication information indicates the first energy-saving mode among the multiple energy-saving modes.

[0288] For example, the network device may determine that the corresponding energy-saving mode is the first energy-saving mode based on the currently used transmitting antenna port, and then indicate the first energy-saving mode to the terminal device.

[0289] In the present application, the fourth indication information can activate (or indicate) the reference signal resource associated with (or corresponding to) the first energy-saving mode by indicating the first energy-saving mode.

[0290] Exemplarily, the network device may configure the reference signal resources associated with the first energy-saving mode while sending the fourth indication information, or the network device may configure the reference signal resources associated with the first energy-saving mode before sending the fourth indication information. Alternatively, the network device may configure the reference signal resources associated with the first energy-saving mode after sending the fourth indication information.

[0291] The reference signal resource associated with the first energy-saving mode may be a periodic reference signal resource. Unlike periodic reference signal resources in the prior art, in this method, the reference signal resource can only be used by the terminal device after receiving indication information indicating the energy-saving mode associated with the reference signal resource. The reference signal resource associated with the first energy-saving mode may also be a semi-persistent or aperiodic reference signal resource, which is not limited in this application.

[0292] Optionally, the fourth indication information may further indicate a transmit power adjustment amount corresponding to the energy-saving mode. Thus, after the energy-saving mode is changed, the terminal device may determine the transmit power corresponding to the changed energy-saving mode based on the transmit power corresponding to the energy-saving mode before the change and the transmit power adjustment amount corresponding to the energy-saving mode after the change.

[0293] For example, if the energy-saving mode changes from the first energy-saving mode to the second energy-saving mode, the transmit power corresponding to the first energy-saving mode is power1, and the transmit power adjustment amount corresponding to the second energy-saving mode is a. Then, the transmit power corresponding to the second energy-saving mode is power2 = power1 - a. It should be understood that in this example, the number of antenna ports corresponding to the second energy-saving mode is less than the number of antenna ports corresponding to the first energy-saving mode, and a is a positive number. It should also be understood that similar variations are also within the scope of protection of this application.

[0294] It should be understood that the transmit power is the transmit power of the network device, and the terminal device can perform channel estimation based on the transmit power of the network device to determine the CSI.

[0295] Optionally, the fourth indication information may be RRC signaling, MAC CE or DCI.

[0296] S630: The terminal device determines the CSI based on the reference signal resources associated with the first energy-saving mode.

[0297] The terminal device can determine the reference signal resources associated with the first energy-saving mode based on the association relationship between the multiple energy-saving modes and the reference signal resources configured in S610, and thus can measure the reference signal based on the reference signal resources associated with the first energy-saving mode to determine the CSI.

[0298] For how the terminal device determines the CSI based on the measurement of the reference signal, please refer to the prior art.

[0299] Optionally, the method may further include:

[0300] S640: The terminal device reports CSI to the network device. Correspondingly, the network device receives the CSI.

[0301] In summary, according to the communication method provided in this application, the network device can indicate to the terminal device the energy-saving mode that matches the currently used transmitting antenna port. The terminal device can determine the reference signal resources used for determining CSI based on the association between the energy-saving mode and the reference signal resources pre-configured by the network device. In this way, the antenna port from which the network device transmits the reference signal as understood by the terminal device is consistent with the antenna port from which the network device actually transmits the reference signal. Thus, the terminal device can determine more accurate CSI based on the measurement of the reference signal sent by the antenna port that actually transmits the reference signal.

[0302] Figure 13 This is a schematic flow chart of another communication method provided by this application. Figure 13 Each step shown is explained.

[0303] S710: The network device sends a third signaling to the terminal device. Correspondingly, the terminal device receives the third signaling.

[0304] The third signaling indicates L1 resource configurations and / or L2 reporting configurations, where L1 and L2 are integers greater than or equal to 1, and both the resource configurations and the reporting configurations are associated with reference signal resources.

[0305] For the meaning of the association between resource configuration and reference signal resources, and the association between report configuration and reference signal resources, please refer to the description in method 600 or the prior art, which will not be repeated here.

[0306] Exemplarily, the antenna ports corresponding to the reference signal resources associated with one resource configuration or reporting configuration are the same.

[0307] Optionally, the resource configuration may be a periodic configuration, an aperiodic configuration, or a semi-persistent configuration. That is, the reference signal resource associated with the resource configuration may be a periodic reference signal resource, an aperiodic reference signal resource, or a semi-persistent reference signal resource.

[0308] Exemplarily, when the L1 resource configuration is periodic configuration, the third signaling may be RRC signaling. When the L1 resource configuration is aperiodic configuration, the third signaling may be DCI. When the L1 resource configuration is semi-persistent configuration, the third signaling may be MAC CE.

[0309] Optionally, the reporting configuration may be a periodic reporting configuration, an aperiodic reporting configuration, or a semi-continuous reporting configuration.

[0310] Exemplarily, when the L2 reporting configuration is a periodic reporting configuration, the third signaling may be RRC signaling. When the L2 reporting configuration is an aperiodic reporting configuration, the third signaling may be DCI. When the L2 reporting configuration is a semi-persistent reporting configuration, the third signaling may be MAC CE.

[0311] S720: The network device sends fifth indication information to the terminal device. Correspondingly, the terminal device receives the fifth indication information.

[0312] In the case where the third signaling indicates L1 resource configurations, the fifth indication information is used to deactivate at least one resource configuration among the L1 resource configurations. For example, the fifth indication information may include an index of the resource configuration to be deactivated.

[0313] In the case where the third signaling indicates L2 reporting configurations, the fifth indication information is used to deactivate at least one of the L2 reporting configurations. For example, the fifth indication information may include an index of the reporting configuration that needs to be deactivated.

[0314] Exemplarily, deactivating a resource configuration refers to deactivating all reference signal resources associated with the resource configuration.

[0315] Exemplarily, deactivating a reporting configuration means deactivating all reference signal resources associated with the reporting configuration, or deactivating uplink resources associated with the reporting configuration. Uplink resources may be, for example, PUCCH or PUSCH.

[0316] It should be understood that the uplink resources associated with a reporting configuration are used to send CSI determined according to the reference signal resources associated with the reporting configuration.

[0317] Exemplarily, the antenna ports corresponding to the reference signal resources associated with the non-deactivated resource configuration or reporting configuration belong to the number of transmitting antenna ports currently used by the network device.

[0318] Optionally, the network device may deactivate resource configurations with the same identifier on multiple carriers or BWPs through the fifth indication information. The corresponding reporting configurations are similar and will not be described in detail.

[0319] Optionally, the fifth signaling may be RRC signaling, MAC CE or DCI.

[0320] For example, when the L1 resource configuration is periodic, the fifth indication information can be carried by RRC signaling. When the L1 resource configuration is aperiodic, the fifth indication information can be carried by DCI. When the L1 resource configuration is semi-persistent, the fifth indication information can be carried by MAC CE or DCI.

[0321] For another example, when the L2 reporting configuration is a periodic reporting configuration, the fifth indication information can be carried by RRC signaling. When the L2 reporting configuration is an aperiodic reporting configuration, the fifth indication information can be carried by DCI. When the L2 reporting configuration is a semi-continuous reporting configuration, the fifth indication information can be carried by MAC CE or DCI.

[0322] S730: The terminal device determines the CSI according to the resource configuration that has not been deactivated in the L1 resource configurations, or determines the CSI according to the reporting configuration that has not been deactivated in the L2 reporting configurations.

[0323] In one case, the third signaling indicates L1 resource configurations. Then, the terminal device determines the non-deactivated resource configurations according to the fifth indication information, receives reference signals based on reference signal resources associated with the non-deactivated resource configurations, and determines CSI by measuring the reference signals.

[0324] In another case, the third signaling indicates L2 reporting configurations. Then, the terminal device determines the reporting configuration that has not been deactivated based on the fifth indication information, and determines the CSI by measuring the reference signal received based on the reference signal resource associated with the non-deactivated reporting configuration. Alternatively, the terminal device determines the reporting configuration that has not been deactivated based on the fifth indication information, and determines the CSI by measuring the reference signal resource associated with the uplink resource that has not been deactivated.

[0325] Optionally, the method may further include:

[0326] S740: The terminal device reports CSI to the network device. Correspondingly, the network device receives the CSI.

[0327] According to the method provided in the present application, the network device can deactivate some inappropriate resource configurations or reporting configurations based on the currently used transmitting antenna port, so that the terminal device can determine the CSI based on the resource configuration or reporting configuration of the transmitting antenna port used by the network device according to the antenna port corresponding to the associated reference signal resource, which is conducive to improving the accuracy of the CSI measurement and further optimizing the scheduling of the terminal device by the network device.

[0328] Optionally, the method may further include: the network device activating the deactivated resource configuration or reporting configuration.

[0329] For example, when the transmit antenna port used by the network device is the same as the antenna port associated with the deactivated resource configuration or reporting configuration, the network device can activate the deactivated resource configuration or reporting configuration. Thus, the terminal device can continue to use the resource configuration or reporting configuration to determine CSI.

[0330] It should be understood that the various schemes of the embodiments of the present application can be reasonably combined and used, and the explanations or descriptions of the various terms appearing in the embodiments can be referenced or explained with each other in the various embodiments, without limitation to this.

[0331] It should also be understood that in the various embodiments of the present application, the order of execution of the above-mentioned processes does not necessarily indicate the order in which they are executed. The order in which the processes are executed should be determined by their functions and internal logic. The various numbers or serial numbers involved in the above-mentioned processes are merely for the convenience of description and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0332] Above, combined Figures 2 to 13 The method provided in the embodiment of the present application is described in detail. Figures 14 to 16 The device provided in the embodiments of the present application is described in detail.

[0333] Figure 14 : is a schematic block diagram of a communication device provided in an embodiment of the present application. Figure 14 As shown, the communication device 1000 may include a transceiver unit 1100 and a processing unit 1200 .

[0334] The transceiver unit 1100 may be used to send information to or receive information from other devices, for example, to send or receive first signaling. The processing unit 1200 may be used to perform internal processing of the device and determine CSI.

[0335] In one implementation, the communication device 1000 may correspond to the terminal device in any of the above methods 200 to 700. The communication device 1000 may be a terminal device or a chip configured in the terminal device, which may include a unit for executing the operation performed by the terminal device, and each unit in the communication device 1000 is respectively for implementing the operation performed by the terminal device in the corresponding method.

[0336] In one embodiment, the transceiver unit 1100 is configured to receive first signaling and first indication information, where the first signaling indicates a first reference signal resource corresponding to P antenna ports. The processing unit 1200 is configured to determine, based on the first indication information, Q antenna ports among the P antenna ports for determining channel state information (CSI), where P and Q are both positive integers and P>Q.

[0337] Optionally, the first indication information indicates the Q antenna ports, or the first indication information indicates antenna ports other than the Q antenna ports among the P antenna ports.

[0338] Optionally, the first indication information indicates a first energy-saving mode. The processing unit 1200 is specifically configured to: determine, according to the first energy-saving mode, the Q antenna ports associated with the first energy-saving mode.

[0339] Optionally, P=2*P1*P2, P1 is the number of antenna ports in the first dimension, P2 is the number of antenna ports in the second dimension, Q=2*Q1*Q2, Q1 is the number of antenna ports in the first dimension, Q2 is the number of antenna ports in the second dimension, P1, P2, Q1, Q2 are all positive integers; wherein, Q1=P1, and Q2<P2; or, Q1<P1, and Q2<P2.

[0340] Optionally, the P antenna ports are divided into 2*A1 groups according to the antenna port index in ascending order, each group includes A2 antenna ports, A1 is a positive integer, and A2 is an integer greater than or equal to 2; wherein, Q / (2*A1) antenna ports in each group of A2 antenna ports belong to the Q antenna ports.

[0341] Optionally, the Q / (2*A1) antenna ports in each group of A2 antenna ports belong to the Q antenna ports, including one of the following: the Q / (2*A1) antenna ports with larger indexes in each group of A2 antenna ports belong to the Q antenna ports; the Q / (2*A1) antenna ports with smaller indexes in each group of A2 antenna ports belong to the Q antenna ports; the Q / (2*A1) antenna ports with larger indexes in each group of A2 antenna ports in the first A1 groups of the 2*A1 groups belong to Of the Q antenna ports, Q / (2*A1) antenna ports with smaller indexes among the A2 antenna ports in each group in the last A1 groups of the 2*A1 groups belong to the Q antenna ports; Q / (2*A1) antenna ports with smaller indexes among the A2 antenna ports in each group in the first A1 groups of the 2*A1 groups belong to the Q antenna ports, and Q / (2*A1) antenna ports with larger indexes among the A2 antenna ports in each group in the last A1 groups of the 2*A1 groups belong to the Q antenna ports.

[0342] Optionally, the processing unit 1200 is further configured to: determine the CSI based on the Q antenna ports and the first information. The first information indicates that the number of antenna ports in the first dimension is B1, and the number of antenna ports in the second dimension is B2, B1 and B2 are both positive integers, C1 is the number of antenna ports in the first dimension indicated by the first codebook configuration information associated with the first reference signal resource, and C2 is the number of antenna ports in the second dimension indicated by the first codebook configuration information. B1 = C1, and B2 < C2; or B1 < C1, and B2 = C2; or B1 < C1, and B2 < C2.

[0343] In another embodiment, the transceiver unit 1100 is configured to receive second signaling and second indication information, where the second signaling indicates a second reference signal resource, the second indication information deactivates the second reference signal resource and activates a third reference signal resource, and the processing unit 1200 is configured to determine CSI based on the second indication information.

[0344] The second indication information is used to deactivate the second reference signal resource and activate the third reference signal resource. Alternatively, the second indication information is used to deactivate part of the reference signal resources in the second reference signal resource, where the second reference signal resource is a periodic reference signal resource. Alternatively, the second indication information is used to indicate that reference signal resources in the second reference signal resource corresponding to a number of antenna ports greater than U are not used for determining CSI, or the second indication information is used to indicate that reference signal resources in the second reference signal resource corresponding to a number of antenna ports less than or equal to U are used for determining channel state information (CSI), where U is a positive integer.

[0345] In another embodiment, the transceiver unit 1100 is configured to receive third indication information and fourth indication information, where the third indication information is used to indicate an association between multiple energy-saving modes and reference signal resources, and the fourth indication information indicates a first energy-saving mode among the multiple energy-saving modes. The processing unit 1200 is configured to determine CSI based on the reference signal resources associated with the first energy-saving mode.

[0346] In another embodiment, the transceiver unit 1100 is used to receive a third signaling, wherein the third signaling indicates L1 resource configurations and / or L2 reporting configurations, L1 and L2 are integers greater than or equal to 1, and the resource configurations and the reporting configurations are both associated with reference signal resources; the transceiver unit 1100 is also used to receive a fifth indication information, wherein the fifth indication information is used to deactivate at least one resource configuration among the L1 resource configurations and / or to deactivate at least one reporting configuration among the L2 reporting configurations; the processing unit 1200 is used to determine the CSI based on the resource configurations that have not been deactivated among the L1 resource configurations, or to determine the CSI based on the reporting configurations that have not been deactivated among the L2 reporting configurations.

[0347] In one implementation, the communication device 1000 may correspond to the network device in any of the above methods 200 to 700. The communication device 1000 may be a network device or a chip configured in the network device, and may include a unit for executing the operations executed by the network device. In addition, each unit in the communication device 1000 is respectively for implementing the operations executed by the network device in the corresponding method.

[0348] In one embodiment, the transceiver unit 1100 is used to send a first signaling, where the first signaling indicates a first reference signal resource, and the first reference signal resource corresponds to P antenna ports; the processing unit 1200 is used to determine Q antenna ports among the P antenna ports; the transceiver unit 1100 is also used to send a first indication information, where the first indication information indicates one of the following items: the Q antenna ports, antenna ports among the P antenna ports other than the Q antenna ports, and a first energy-saving mode; wherein the first energy-saving mode is associated with the Q antenna ports.

[0349] Optionally, P=2*P1*P2, P1 is the number of antenna ports in the first dimension, P2 is the number of antenna ports in the second dimension, Q=2*Q1*Q2, Q1 is the number of antenna ports in the first dimension, Q2 is the number of antenna ports in the second dimension, P1, P2, Q1, Q2 are all positive integers; wherein, Q1=P1, and Q2<P2; or, Q1<P1, and Q2<P2.

[0350] Optionally, the P antenna ports are divided into 2*A1 groups according to the antenna port index in ascending order, each group includes A2 antenna ports, A1 is a positive integer, and A2 is an integer greater than or equal to 2; wherein, Q / (2*A1) antenna ports in each group of A2 antenna ports belong to the Q antenna ports.

[0351] Optionally, the Q / (2*A1) antenna ports in each group of A2 antenna ports belong to the Q antenna ports, including one of the following: the Q / (2*A1) antenna ports with larger indexes in each group of A2 antenna ports belong to the Q antenna ports; the Q / (2*A1) antenna ports with smaller indexes in each group of A2 antenna ports belong to the Q antenna ports; the Q / (2*A1) antenna ports with larger indexes in each group of A2 antenna ports in the first A1 groups of the 2*A1 groups belong to Of the Q antenna ports, Q / (2*A1) antenna ports with smaller indexes among the A2 antenna ports in each group in the last A1 groups of the 2*A1 groups belong to the Q antenna ports; Q / (2*A1) antenna ports with smaller indexes among the A2 antenna ports in each group in the first A1 groups of the 2*A1 groups belong to the Q antenna ports, and Q / (2*A1) antenna ports with larger indexes among the A2 antenna ports in each group in the last A1 groups of the 2*A1 groups belong to the Q antenna ports.

[0352] Optionally, the transceiver unit 1100 is also used to: send first information, where the first information indicates that the number of antenna ports in the first dimension is B1, and the number of antenna ports in the second dimension is B2, B1 and B2 are both positive integers, C1 is the number of antenna ports in the first dimension indicated by the first codebook configuration information associated with the first reference signal resource, and C2 is the number of antenna ports in the second dimension indicated by the first codebook configuration information; wherein, B1=C1, and B2<C2; or, B1<C1, and B2=C2; or, B1<C1, and B2<C2.

[0353] In another embodiment, the transceiver unit 1100 is configured to send a second signaling and second indication information, where the second signaling indicates a second reference signal resource, and the second indication information deactivates the second reference signal resource and activates a third reference signal resource.

[0354] The second indication information is used to deactivate the second reference signal resource and activate the third reference signal resource. Alternatively, the second indication information is used to deactivate part of the reference signal resources in the second reference signal resource, where the second reference signal resource is a periodic reference signal resource. Alternatively, the second indication information is used to indicate that reference signal resources in the second reference signal resource corresponding to a number of antenna ports greater than U are not used for determining CSI, or the second indication information is used to indicate that reference signal resources in the second reference signal resource corresponding to a number of antenna ports less than or equal to U are used for determining channel state information (CSI), where U is a positive integer.

[0355] In another embodiment, the transceiver unit 1100 is used to send third indication information and fourth indication information, where the third indication information is used to indicate the association between multiple energy-saving modes and reference signal resources, and the fourth indication information indicates the first energy-saving mode among the multiple energy-saving modes.

[0356] In another embodiment, the transceiver unit 1100 is used to send a third signaling, wherein the third signaling indicates L1 resource configurations and / or L2 reporting configurations, L1 and L2 are integers greater than or equal to 1, and the resource configurations and the reporting configurations are both associated with reference signal resources; the transceiver unit 1100 is also used to send a fifth indication information, wherein the fifth indication information is used to deactivate at least one resource configuration among the L1 resource configurations and / or deactivate at least one reporting configuration among the L2 reporting configurations.

[0357] It should be understood that the specific process of each unit executing the above corresponding steps of the corresponding network element has been described in detail in the above method embodiment, and for the sake of brevity, it will not be repeated here.

[0358] It should also be understood that when the communication device 1000 is a network device, the transceiver unit 1100 in the communication device 1000 may correspond to Figure 15 The RRU3100 in the network device 2000 shown in FIG. 1 may correspond to the processing unit 1200 in the communication device 1000. Figure 15 When the communication device 1000 is a chip configured in the network device, the transceiver unit 1100 in the communication device 1000 may be an input / output interface.

[0359] It should also be understood that when the communication device 1000 is a terminal device, the transceiver unit 1100 in the communication device 1000 may correspond to Figure 16 The transceiver 3002 in the terminal device 3000 shown in FIG. 1 may correspond to the processing unit 1200 in the communication device 1000. Figure 16 The processor 3001 in the terminal device 3000 is shown.

[0360] Figure 15 This is a schematic diagram of the structure of the network device provided in the embodiment of the present application, for example, a schematic diagram of the structure of a base station. The base station 2000 can be applied to Figure 1 In the system shown in FIG. 1 , the functions of the network device in the above method embodiment are performed. As shown in the figure, the base station 2000 may include one or more radio frequency units, such as a remote radio unit (RRU) 2100 and one or more baseband units (BBU) (also known as distributed units (DU)) 2200. The RRU 2100 may be called a transceiver unit or a communication unit. Figure 14 . Optionally, the transceiver unit 2100 may also be referred to as a transceiver, a transceiver circuit, or a transceiver, etc., and may include at least one antenna 2101 and a radio frequency unit 2102. Optionally, the transceiver unit 2100 may include a receiving unit and a transmitting unit, the receiving unit may correspond to a receiver (or receiver, receiving circuit), and the transmitting unit may correspond to a transmitter (or transmitter, transmitting circuit). The RRU2100 part is mainly used for receiving and transmitting radio frequency signals and converting radio frequency signals into baseband signals. The BBU2200 part is mainly used for baseband processing, controlling the base station, etc. The RRU2100 and BBU2200 may be physically arranged together or physically separated, that is, a distributed base station.

[0361] The BBU 2200 is the control center of the base station, which can also be called a processing unit. Figure 14The processing unit 1200 in the embodiment corresponds to the baseband processing unit 1200, which is mainly used to complete baseband processing functions such as channel coding, multiplexing, modulation, spread spectrum, etc. For example, the BBU (processing unit) can be used to control the base station to execute the operation process of the network device in the above method embodiment.

[0362] In one example, the BBU2200 can be composed of one or more single boards, and multiple single boards can jointly support a wireless access network with a single access standard (such as an LTE network), or can respectively support wireless access networks with different access standards (such as an LTE network, a 5G network or other networks). The BBU2200 also includes a memory 2201 and a processor 2202. The memory 2201 is used to store necessary instructions and data. The processor 2202 is used to control the base station to perform necessary actions, such as controlling the base station to execute the operation process of the network device in the above method embodiment. The memory 2201 and the processor 2202 can serve one or more single boards. That is, a memory and a processor can be set separately on each single board. Alternatively, multiple single boards can share the same memory and processor. In addition, necessary circuits can also be set on each single board.

[0363] It should be understood that Figure 15 The illustrated base station 2000 is capable of implementing the various processes related to network devices in the aforementioned method embodiments. The operations or functions of the various modules in base station 2000 are respectively for implementing the corresponding processes in the aforementioned method embodiments. For details, please refer to the description of the aforementioned method embodiments; to avoid repetition, detailed descriptions are omitted here.

[0364] The BBU 2200 can be used to perform the actions implemented within the network device described in the previous method embodiments, while the RRU 2100 can be used to perform the actions of the network device sending to or receiving from the terminal device described in the previous method embodiments. For details, please refer to the description of the previous method embodiments and will not be repeated here.

[0365] Figure 16 3 is a schematic diagram of the structure of a terminal device 3000 provided in an embodiment of the present application. As shown in the figure, the terminal device 3000 includes a processor 3001 and a transceiver 3002. Optionally, the terminal device 3000 may also include a memory 3003. The processor 3001, the transceiver 3002, and the memory 3003 can communicate with each other via internal connection paths to transmit control and / or data signals. The memory 3003 is used to store computer programs, and the processor 3001 is used to call and execute the computer programs from the memory 3003 to control the transceiver 3002 to transmit and receive signals.

[0366] The processor 3001 and memory 3003 may be combined into a processing device 3004, with the processor 3001 being configured to execute program code stored in the memory 3003 to implement the aforementioned functions. It should be understood that the processing device 3004 shown in the figure is merely an example. In a specific implementation, the memory 3003 may also be integrated into the processor 3001 or independent of the processor 3001. This application does not impose any limitations on this.

[0367] The terminal device 3000 may further include an antenna 3010 for transmitting the uplink data or uplink control signaling output by the transceiver 3002 via a wireless signal.

[0368] It should be understood that Figure 16 The illustrated terminal device 3000 is capable of implementing the various processes involved in the aforementioned method embodiments. The operations or functions of the various modules within the terminal device 3000 are respectively for implementing the corresponding processes in the aforementioned method embodiments. For details, please refer to the description of the aforementioned method embodiments; to avoid repetition, detailed descriptions are omitted here.

[0369] Optionally, the terminal device 3000 may further include a power supply 3005 for providing power to various devices or circuits in the terminal device.

[0370] In addition, in order to make the functions of the terminal device more complete, the terminal device 3000 can also include one or more of an input unit 3006, a display unit 3007, an audio circuit 3008, a camera 3009 and a sensor 3008, and the audio circuit can also include a speaker 30081, a microphone 30082, etc.

[0371] It should be understood that the processing device can be a chip. For example, the processing device can be a field programmable gate array (FPGA), a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, a system on chip (SoC), a central processing unit (CPU), a network processor (NP), a digital signal processing circuit (DSP), a microcontroller unit (MCU), a programmable logic device (PLD) or other integrated chip. The methods, steps and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor, etc. The steps of the method disclosed in the embodiments of the present application can be directly embodied as being executed by a hardware decoding processor, or can be executed by a combination of hardware and software modules in the decoding processor. The software module can be located in a storage medium well-known in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, etc. The storage medium is located in the memory, and the processor reads the information in the memory and, in conjunction with its hardware, completes the steps of the above method.

[0372] The memory 3003 may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. The non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct rambus RAM (DRRAM).

[0373] It should be noted that memory of the systems and methods described herein is intended to comprise, but not be limited to, these and any other suitable types of memory.

[0374] The present application also provides a computer program product, which includes: computer program code, which, when executed on a computer, enables the computer to execute the method executed by the terminal device or network device in any of the aforementioned method embodiments.

[0375] The present application also provides a computer-readable medium storing a program code. When the program code runs on a computer, the computer executes the method executed by the network device or the terminal device in the aforementioned method embodiment.

[0376] The present application also provides a system, which includes a terminal device and a network device.

[0377] An embodiment of the present application also provides a processing device, including a processor and an interface; the processor is used to execute the method executed by the terminal device or network device involved in any of the above method embodiments.

[0378] In the above embodiments, all or part of the embodiments may be implemented by software, hardware, firmware, or any combination thereof. When implemented using software, all or part of the embodiments may be implemented in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may 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 may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium may be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrated therein. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a high-density digital video disc (DVD)), or a semiconductor medium (eg, a solid state disc (SSD)).

[0379] As used in this specification, the terms "component," "module," "system," and the like are used to refer to computer-related entities, hardware, firmware, a combination of hardware and software, software, or software in execution. For example, a component can be, but is not limited to, a process running on a processor, a processor, an object, an executable file, an execution thread, a program, or a computer. By way of illustration, both applications running on a computing device and a computing device can be components. One or more components can reside in a process or execution thread, and a component can be located on a single computer or distributed between two or more computers. In addition, these components can be executed from various computer-readable media having various data structures stored thereon. Components can communicate, for example, through local or remote processes based on signals having one or more data packets (e.g., data from two components interacting with another component on a local system, a distributed system, or a network, such as the Internet interacting with other systems via signals).

[0380] It should be understood that references to "embodiments" throughout this specification mean that a particular feature, structure, or characteristic associated with the embodiment is included in at least one embodiment of the present application. Therefore, various embodiments throughout this specification do not necessarily refer to the same embodiment. Furthermore, these particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0381] It should be understood that in the embodiments of the present application, the numbers "first", "second"... are only for distinguishing different objects, such as to distinguish different network devices, and do not constitute a limitation on the scope of the embodiments of the present application. The embodiments of the present application are not limited to this.

[0382] It should also be understood that in this application, "when", "if" and "if" all mean that the network element will make corresponding processing under certain objective circumstances, which is not a time limit, and does not require the network element to make judgment actions when implementing it, nor does it mean that there are other limitations.

[0383] It should also be understood that, in the present application, “at least one” means one or more, and “more than one” means two or more.

[0384] It should also be understood that in each embodiment of the present application, "A corresponds to B" means that B is associated with A, and B can be determined based on A. However, it should also be understood that determining B based on A does not mean determining B based solely on A, and B can also be determined based on A and / or other information.

[0385] It should also be understood that the term "and / or" as used herein simply describes a relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " as used herein generally indicates that the associated objects are in an "or" relationship.

[0386] In this application, expressions similar to “the item includes one or more of the following: A, B, and C” generally mean, unless otherwise specified, that the item can be any one of the following: A; B; C; A and B; A and C; B and C; A, B and C; A and A; A, A and A; A, A and B; A, A and C, A, B and B; A, C and C; B and B, B, B and B, B, B and C, C and C; C, C and C, and other combinations of A, B and C. The above example uses A, B, and C as an example to illustrate the optional items of the item. When the expression is “the item includes at least one of the following: A, B, …, and X”, that is, when the expression contains more elements, the items applicable to the item can also be obtained according to the above rules.

[0387] It is understood that in the embodiments of the present application, the terminal device and / or the network device may perform some or all of the steps in the embodiments of the present application. These steps or operations are merely examples, and the embodiments of the present application may also perform other operations or variations of various operations. In addition, the various steps may be performed in a different order than those presented in the embodiments of the present application, and it is possible that not all of the operations in the embodiments of the present application need to be performed.

[0388] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0389] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0390] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0391] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0392] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0393] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory ROM, a random access memory RAM, a magnetic disk, or an optical disk.

[0394] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A communication method, characterized in that: include: receiving first signaling, where the first signaling indicates a first reference signal resource, where the first reference signal resource corresponds to P antenna ports; receiving first instruction information; Determine, according to the first indication information, Q antenna ports among the P antenna ports for determining channel state information CSI, where P and Q are both positive integers and P>Q; The first indication information indicates a first energy-saving mode, The determining, according to the first indication information, Q antenna ports among the P antenna ports for determining CSI includes: According to the first energy-saving mode, the Q antenna ports associated with the first energy-saving mode are determined.

2. The method according to claim 1, wherein The method further comprises: determining the CSI according to the Q antenna ports and the first information, The first information indicates that the number of antenna ports in the first dimension is B1, the number of antenna ports in the second dimension is B2, B1 and B2 are both positive integers, C1 is the number of antenna ports in the first dimension indicated by the first codebook configuration information associated with the first reference signal resource, and C2 is the number of antenna ports in the second dimension indicated by the first codebook configuration information; Wherein, B1=C1, and B2<C2; Or, B1<C1, and B2=C2; Alternatively, B1<C1, and B2<C2.

3. The method according to claim 1 or 2, wherein: P = 2*P1*P2, where P1 is the number of antenna ports in the first dimension, and P2 is the number of antenna ports in the second dimension. Q = 2*Q1*Q2, where Q1 is the number of antenna ports in the first dimension, and Q2 is the number of antenna ports in the second dimension. P1, P2, Q1, and Q2 are all positive integers. Among them, Q1=P1, and Q2<P2; or, Q1<P1, and Q2<P2.

4. The method according to claim 1 or 2, wherein: The P antenna ports are divided into 2*A1 groups according to the antenna port index in ascending order, each group includes A2 antenna ports, where A1 is a positive integer and A2 is an integer greater than or equal to 2; Among them, Q / (2*A1) antenna ports in each group of A2 antenna ports belong to the Q antenna ports.

5. The method according to claim 4, wherein The Q / (2*A1) antenna ports in each group of A2 antenna ports belong to the Q antenna ports, including one of the following: The Q / (2*A1) antenna ports with larger indexes in each group of A2 antenna ports belong to the Q antenna ports; The Q / (2*A1) antenna ports with smaller indices in each group of A2 antenna ports belong to the Q antenna ports; In the first A1 groups of the 2*A1 groups, Q / (2*A1) antenna ports with larger indexes among the A2 antenna ports in each group belong to the Q antenna ports, and in the last A1 groups of the 2*A1 groups, Q / (2*A1) antenna ports with smaller indexes among the A2 antenna ports in each group belong to the Q antenna ports; In the first A1 groups among the 2*A1 groups, Q / (2*A1) antenna ports with smaller indexes among the A2 antenna ports in each group belong to the Q antenna ports, and in the last A1 groups among the 2*A1 groups, Q / (2*A1) antenna ports with larger indexes among the A2 antenna ports in each group belong to the Q antenna ports.

6. A communication method, characterized in that: include: Sending first signaling, where the first signaling indicates a first reference signal resource, where the first reference signal resource corresponds to P antenna ports; Determining Q antenna ports among the P antenna ports for determining channel state information CSI; First indication information is sent, where the first indication information indicates a first energy-saving mode, and the first energy-saving mode is associated with the Q antenna ports, where P and Q are both positive integers, and P>Q.

7. The method according to claim 6, wherein The method further comprises: Sending first information, where the first information indicates that the number of antenna ports in the first dimension is B1, the number of antenna ports in the second dimension is B2, B1 and B2 are both positive integers, C1 is the number of antenna ports in the first dimension indicated by the first codebook configuration information associated with the first reference signal resource, and C2 is the number of antenna ports in the second dimension indicated by the first codebook configuration information; Wherein, B1=C1, and B2<C2; Or, B1<C1, and B2=C2; Alternatively, B1<C1, and B2<C2.

8. The method according to claim 6 or 7, wherein: P = 2*P1*P2, where P1 is the number of antenna ports in the first dimension, and P2 is the number of antenna ports in the second dimension. Q = 2*Q1*Q2, where Q1 is the number of antenna ports in the first dimension, and Q2 is the number of antenna ports in the second dimension. P1, P2, Q1, and Q2 are all positive integers. Among them, Q1=P1, and Q2<P2; or, Q1<P1, and Q2<P2.

9. The method according to claim 6 or 7, wherein: The P antenna ports are divided into 2*A1 groups according to the antenna port index in ascending order, each group includes A2 antenna ports, where A1 is a positive integer and A2 is an integer greater than or equal to 2; Among them, Q / (2*A1) antenna ports in each group of A2 antenna ports belong to the Q antenna ports.

10. The method according to claim 9, wherein The Q / (2*A1) antenna ports in each group of A2 antenna ports belong to the Q antenna ports, including one of the following: The Q / (2*A1) antenna ports with larger indexes in each group of A2 antenna ports belong to the Q antenna ports; The Q / (2*A1) antenna ports with smaller indices in each group of A2 antenna ports belong to the Q antenna ports; In the first A1 groups of the 2*A1 groups, Q / (2*A1) antenna ports with larger indexes among the A2 antenna ports in each group belong to the Q antenna ports, and in the last A1 groups of the 2*A1 groups, Q / (2*A1) antenna ports with smaller indexes among the A2 antenna ports in each group belong to the Q antenna ports; In the first A1 groups among the 2*A1 groups, Q / (2*A1) antenna ports with smaller indexes among the A2 antenna ports in each group belong to the Q antenna ports, and in the last A1 groups among the 2*A1 groups, Q / (2*A1) antenna ports with larger indexes among the A2 antenna ports in each group belong to the Q antenna ports.

11. A communication device, characterized in that: include: a transceiver unit, configured to receive first signaling, where the first signaling indicates a first reference signal resource, where the first reference signal resource corresponds to P antenna ports; The transceiver unit is further configured to receive first indication information; a processing unit, configured to determine, according to the first indication information, Q antenna ports among the P antenna ports for determining channel state information CSI, where P and Q are both positive integers and P>Q; The first indication information indicates a first energy-saving mode, The processing unit is configured to determine, according to the first indication information, Q antenna ports among the P antenna ports for determining channel state information CSI, including: The processing unit is specifically configured to determine, according to the first energy-saving mode, the Q antenna ports associated with the first energy-saving mode.

12. The device according to claim 11, wherein The processing unit is further configured to: determining the CSI according to the Q antenna ports and the first information, The first information indicates that the number of antenna ports in the first dimension is B1, the number of antenna ports in the second dimension is B2, B1 and B2 are both positive integers, C1 is the number of antenna ports in the first dimension indicated by the first codebook configuration information associated with the first reference signal resource, and C2 is the number of antenna ports in the second dimension indicated by the first codebook configuration information; Wherein, B1=C1, and B2<C2; Or, B1<C1, and B2=C2; Alternatively, B1<C1, and B2<C2.

13. A communication device, characterized in that: include: a transceiver unit, configured to send a first signaling, where the first signaling indicates a first reference signal resource, where the first reference signal resource corresponds to P antenna ports; a processing unit, configured to determine Q antenna ports among the P antenna ports for determining channel state information CSI; The transceiver unit is further configured to send first indication information, where the first indication information indicates a first energy-saving mode; The first energy-saving mode is associated with the Q antenna ports, P and Q are both positive integers, and P>Q.

14. The device according to claim 13, wherein The transceiver unit is further configured to: Sending first information, where the first information indicates that the number of antenna ports in the first dimension is B1, the number of antenna ports in the second dimension is B2, B1 and B2 are both positive integers, C1 is the number of antenna ports in the first dimension indicated by the first codebook configuration information associated with the first reference signal resource, and C2 is the number of antenna ports in the second dimension indicated by the first codebook configuration information; Wherein, B1=C1, and B2<C2; Or, B1<C1, and B2=C2; Alternatively, B1<C1, and B2<C2.

15. A communication device, characterized in that: The apparatus includes a processor and a storage medium, wherein the storage medium stores instructions. When the instructions are executed by the processor, the apparatus performs the method according to any one of claims 1 to 10.

16. A computer-readable storage medium, characterized in that The computer-readable storage medium stores instructions, which, when executed, cause a communication device to perform the method according to any one of claims 1 to 10.

17. A computer program product, characterized in that The computer program product comprises: a computer program code, and when the computer program code is executed by a computer, the computer is caused to perform the method according to any one of claims 1 to 10.

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