Communication method and apparatus

Abstract

A communication method and apparatus are provided for reducing the influence of an interfering terminal device on an interfered terminal device and ensuring normal operation of the interfered terminal device, and relate to the field of communication technology. The method may include: a first terminal device receiving first indication information from a first network device; and transmitting an SRS based on a transmission power determined based on the first indication information, the first indication information including path loss information related to a sounding reference signal (SRS), and the path loss information is used by the first terminal device to determine the transmission power of the SRS, or the first indication information includes the transmission power of the SRS.

Description

[Technical Field]

[0001] This application claims priority to Chinese Patent Application No. 202310182954.8, entitled "Communication Method and Apparatus," filed with the State Intellectual Property Office of China on February 17, 2023, the entire contents of which are incorporated herein by reference.

[0002] The present application relates to the field of communication technologies, and more particularly to communication methods and devices. [Background technology]

[0003] In a communication system, when a network device communicates with a terminal device, cross link interference (CLI) may exist between the uplink and the downlink due to signal power leakage. For example, when a terminal device (i.e., an interfering terminal device) transmits an uplink signal to a network device, a downlink signal received by another terminal device (i.e., an interfered terminal device) may be interfered with due to signal power leakage.

[0004] The interfering device may transmit a sounding reference signal (SRS) based on a downlink reference signal transmitted by the network device, and the interfered terminal device may perform a CLI measurement on the SRS transmitted by the interfering terminal device to obtain a CLI measurement result and report the CLI measurement result to the network device.

[0005] When an interfering terminal device is located at a cell edge, the path loss between the interfering terminal device and the network device is large. As a result, the transmission power of the SRS determined by the interfering terminal device may be large or even reach the maximum transmission power of the terminal device. When the interfered terminal device is close to the interfering terminal device, the interfered terminal device may be directly disturbed due to the large received power of the SRS and cannot operate normally. Therefore, how to reduce the influence of the interfering terminal device on the interfered terminal device and ensure the normal operation of the interfered terminal device has become a technical problem that needs to be urgently solved. Summary of the Invention

[0006] The embodiments of the present application provide a communication method and apparatus for reducing the influence of an interfering terminal device on an interfered terminal device and ensuring the normal operation of the interfered terminal device. [Means for solving the problem]

[0007] According to a first aspect, an embodiment of the present application provides a communication method, the method including: a first terminal device receiving first indication information from a first network device; and transmitting an SRS based on a transmission power determined based on the first indication information, wherein the first indication information includes path loss information related to a sounding reference signal (SRS), and the path loss information is used by the first terminal device to determine a transmission power of the SRS, or the first indication information includes the transmission power of the SRS.

[0008] Based on the first aspect, compared with the method in which the first terminal device determines the transmission power of the SRS based on the downlink reference signal transmitted by the first network device, the method in which the first terminal device determines the transmission power of the SRS based on the first indication information transmitted by the first network device can reduce the transmission power of the SRS, thereby reducing the impact of the interfering terminal device on the interfered terminal device, ensuring the normal operation of the interfered terminal device, enabling CLI measurement between the terminal devices, and improving system performance and efficiency.

[0009] For example, when the first terminal device is far away from the first network device, the path loss value determined by the first terminal device based on the downlink reference signal is large, and as a result, the transmission power of the SRS determined based on the path loss value is large. The method for determining the transmission power of the SRS based on the first indication information sent by the first network device can reduce the transmission power of the SRS.

[0010] In possible designs, the path loss information includes a path loss value, or the path loss information includes a path loss value range, or the path loss information includes an index of the path loss value, or the path loss information includes an index of a path loss value range.

[0011] Based on the possible designs, several feasible solutions for designing the path loss information are provided.

[0012] In a possible design, the first terminal device sends second indication information to the first network device, where the second indication information includes a power headroom report for SRS transmission opportunity m, where m is an integer.

[0013] In a possible design, the power headroom report for SRS transmission opportunity m is used to determine path loss information associated with the transmit power of SRS transmission opportunity n, or the power headroom report for SRS transmission opportunity m is used to determine the transmit power of SRS transmission opportunity n, where n is an integer and n is greater than m.

[0014] Based on the above two possible designs, the first terminal device reports a power headroom report to the first network device, so that the first network device can determine the first indication information based on the power headroom report, which provides a feasible solution for the first network device to determine the first indication information.

[0015] In a possible design, the first terminal device receives a first maximum transmission power and / or a second maximum transmission power from the first network device, the first maximum transmission power and / or the second maximum transmission power being used to determine a maximum output power of the first terminal device, and the first maximum transmission power and the second maximum transmission power being associated with the same carrier of the same cell.

[0016] In a possible design, the first terminal device receives a first maximum transmission power from the first network device, and the first terminal device determines a maximum output power based on the first maximum transmission power, or the first terminal device receives a first maximum transmission power and a second maximum transmission power from the first network device, and the first terminal device determines a maximum output power based on the first maximum transmission power and the second maximum transmission power, or the first terminal device receives the first maximum transmission power and the second maximum transmission power from the first network device, and the first terminal device determines a maximum output power based on the first maximum transmission power.

[0017] In a possible design, the first maximum transmission power is less than the second maximum transmission power, and the second maximum transmission power is configured in the uplink frequency information signaling unit.

[0018] Based on the above three possible designs, an additional first maximum transmission power is introduced based on the second maximum transmission power, which can prevent the second terminal device from being disturbed due to the SRS initially transmitted by the first terminal device.

[0019] In a possible design, the first indication information is located in one or more of the following signaling: system information block (SIB) signaling, radio resource control (RRC) signaling, medium access control (MAC) control element (CE) signaling, or downlink control information (DCI) signaling.

[0020] Based on possible designs, the first network device may semi-statically indicate the first indication information using higher layer signaling, such as RRC signaling or MAC CE signaling, or may dynamically indicate the first indication information using DCI, so as to provide multiple feasible solutions for designing the first indication information.

[0021] In a possible design, the transmit power for SRS transmission opportunity n satisfies:

number

[0022] Based on a possible design, the first network device may directly indicate the transmit power of the SRS transmission opportunity n or path loss information related to the transmit power of the SRS transmission opportunity n to the first terminal device, so that the first network device does not need to indicate the power control adjustment state to the first terminal device, thereby reducing signaling overhead. In other words, the value of the power control adjustment state related to the SRS may be 0.

[0023] In a possible design, the transmit power for SRS transmission opportunity n satisfies:

number

[0024] Based on a possible design, the first network device directly indicates path loss information related to the transmit power of the SRS transmission opportunity n to the first terminal device, so that the first network device does not need to indicate the power control adjustment state to the first terminal device, thereby reducing signaling overhead. In other words, the power control adjustment state related to the SRS may not need to be considered when the transmit power of the SRS is determined.

[0025] According to a second aspect, an embodiment of the present application provides a communication method, which may include: a first network device generating first indication information and transmitting the first indication information to a first terminal device, the first indication information including path loss information related to a sounding reference signal (SRS), and the path loss information being used by the first terminal device to determine a transmission power of the SRS, or the first indication information including the transmission power of the SRS.

[0026] According to the second aspect, the first network device transmits first indication information to the first terminal device, so that the first terminal device can determine the transmission power of the SRS based on the first indication information transmitted by the first network device instead of based on the downlink reference signal transmitted by the first network device, which can reduce the transmission power of the SRS, thereby reducing the impact of the interfering terminal device on the interfered terminal device, ensuring the normal operation of the interfered terminal device, enabling CLI measurement between the terminal devices, and improving system performance and efficiency.

[0027] In possible designs, the path loss information includes a path loss value, or the path loss information includes a path loss value range, or the path loss information includes an index of the path loss value, or the path loss information includes an index of a path loss value range.

[0028] Based on the possible designs, several feasible solutions for designing the path loss information are provided.

[0029] In a possible design, the first network device receives second indication information from the first terminal device, where the second indication information includes a power headroom report for SRS transmission opportunity m, where m is an integer.

[0030] In a possible design, the first network device receives third indication information from the second terminal device, where the third indication information includes a crosslink interference CLI measurement result of the SRS.

[0031] In a possible design, the first network device determines path loss information related to the transmit power of the SRS transmission opportunity n based on the power headroom report of the SRS transmission opportunity m and the SRS CLI measurement results, or the first network device determines the transmit power of the SRS transmission opportunity n based on the power headroom report of the SRS transmission opportunity m and the SRS CLI measurement results, where n is an integer and n is greater than m.

[0032] Based on the aforementioned three possible designs, the first network device may determine the first indication information by comprehensively considering the power headroom report of the first terminal device and the degree of interference of the first terminal device to the second terminal device based on the power headroom report reported by the first terminal device and the CLI measurement result reported by the second terminal device, so as to provide a feasible solution for the first network device to determine the first indication information.

[0033] In a possible design, the first network device transmits a first maximum transmission power and / or a second maximum transmission power to the first terminal device, the first maximum transmission power and / or the second maximum transmission power being used to determine a maximum output power of the first terminal device, and the first maximum transmission power and the second maximum transmission power being associated with the same carrier of the same cell.

[0034] In possible designs, the first network device transmits a first maximum transmission power to the first terminal device, and the first maximum transmission power is used to determine the maximum output power, or the first network device transmits a first maximum transmission power and a second maximum transmission power to the first terminal device, and the first maximum transmission power and the second maximum transmission power are used to determine the maximum output power, or the first network device transmits a first maximum transmission power and a second maximum transmission power to the first terminal device, and the first maximum transmission power is used to determine the maximum output power.

[0035] In a possible design, the first maximum transmission power is less than the second maximum transmission power, and the second maximum transmission power is configured in the uplink frequency information signaling unit.

[0036] Based on the above three possible designs, an additional first maximum transmission power is introduced based on the second maximum transmission power, which can prevent the second terminal device from being disturbed due to the SRS initially transmitted by the first terminal device.

[0037] In a possible design, the first indication information is located in one or more of the following signaling: system information block (SIB) signaling, radio resource control (RRC) signaling, medium access control (MAC) control element (CE) signaling, or downlink control information (DCI) signaling.

[0038] In a possible design, the transmit power for SRS transmission opportunity n satisfies:

number

[0039] Based on a possible design, the first network device may directly indicate the transmit power of the SRS transmission opportunity n or path loss information related to the transmit power of the SRS transmission opportunity n to the first terminal device, so that the first network device does not need to indicate the power control adjustment state to the first terminal device, thereby reducing signaling overhead. In other words, the value of the power control adjustment state related to the SRS may be 0.

[0040] In a possible design, the transmit power for SRS transmission opportunity n satisfies:

number

[0041] Based on a possible design, the first network device directly indicates path loss information related to the transmit power of the SRS transmission opportunity n to the first terminal device, so that the first network device does not need to indicate the power control adjustment state to the first terminal device, thereby reducing signaling overhead. In other words, the power control adjustment state related to the SRS may not need to be considered when the transmit power of the SRS is determined.

[0042] According to a third aspect, an embodiment of the present application provides a communication method, which may include: a first terminal device receiving a first maximum transmission power and / or a second maximum transmission power from a first network device; and determining a maximum output power of the first terminal device based on the first maximum transmission power and / or the second maximum transmission power, wherein the first maximum transmission power and the second maximum transmission power are associated with a same carrier in a same cell.

[0043] According to the third aspect, an additional first maximum transmission power is introduced based on the second maximum transmission power, thereby preventing the second terminal device from being disturbed due to the SRS initially transmitted by the first terminal device.

[0044] In a possible design, the first terminal device receives a first maximum transmission power from the first network device, and the first terminal device determines a maximum output power based on the first maximum transmission power, or the first terminal device receives a first maximum transmission power and a second maximum transmission power from the first network device, and the first terminal device determines a maximum output power based on the first maximum transmission power and the second maximum transmission power, or the first terminal device receives the first maximum transmission power and the second maximum transmission power from the first network device, and the first terminal device determines a maximum output power based on the first maximum transmission power.

[0045] Based on possible designs, several feasible solutions are provided for the first terminal device to determine the maximum output power.

[0046] In a possible design, the first maximum transmission power is less than the second maximum transmission power, and the second maximum transmission power is configured in the uplink frequency information signaling unit.

[0047] According to a fourth aspect, an embodiment of the present application provides a communication method, which may include: a first network device determining a first maximum transmission power and / or a second maximum transmission power, and transmitting the first maximum transmission power and / or the second maximum transmission power to a first terminal device, the first maximum transmission power and / or the second maximum transmission power being used to determine a maximum output power of the first terminal device, and the first maximum transmission power and the second maximum transmission power being associated with a same carrier of a same cell.

[0048] According to the fourth aspect, an additional first maximum transmission power is introduced based on the second maximum transmission power, thereby preventing the second terminal device from being disturbed due to the SRS initially transmitted by the first terminal device.

[0049] In possible designs, the first network device transmits a first maximum transmission power to the first terminal device, and the first maximum transmission power is used to determine the maximum output power, or the first network device transmits a first maximum transmission power and a second maximum transmission power to the first terminal device, and the first maximum transmission power and the second maximum transmission power are used to determine the maximum output power, or the first network device transmits a first maximum transmission power and a second maximum transmission power to the first terminal device, and the first maximum transmission power is used to determine the maximum output power.

[0050] Based on possible designs, several feasible solutions are provided for determining the maximum output power of the first terminal device.

[0051] In a possible design, the first maximum transmission power is less than the second maximum transmission power, and the second maximum transmission power is configured in the uplink frequency information signaling unit.

[0052] According to a fifth aspect, an embodiment of the present application provides a communication device. The communication device may be used in a first terminal device to implement functions performed by the first terminal device in the first aspect or a possible design of the first aspect. The communication device may be the first terminal device itself, or may be a chip or system-on-chip configured to implement the functions of the first terminal device. The communication device may implement the functions performed by the first terminal device by executing corresponding software through hardware. The hardware or software may include one or more modules corresponding to the functions, such as a transceiver module and a processing module. The transceiver module is configured to receive first indication information from a first network device and is further configured to transmit an SRS based on a transmission power determined based on the first indication information, the first indication information including path loss information related to the SRS, and the path loss information is used by the first terminal device to determine a transmission power of the SRS, or the first indication information includes the transmission power of the SRS.

[0053] In possible designs, the path loss information includes a path loss value, or the path loss information includes a path loss value range, or the path loss information includes an index of the path loss value, or the path loss information includes an index of a path loss value range.

[0054] In a possible design, the transceiver module is further configured to send second indication information to the first network device, the second indication information including a power headroom report for SRS transmission opportunity m, where m is an integer.

[0055] In a possible design, the power headroom report for SRS transmission opportunity m is used to determine path loss information associated with the transmit power of SRS transmission opportunity n, or the power headroom report for SRS transmission opportunity m is used to determine the transmit power of SRS transmission opportunity n, where n is an integer and n is greater than m.

[0056] In a possible design, the transceiver module is further configured to receive a first maximum transmission power and / or a second maximum transmission power from the first network device, the first maximum transmission power and / or the second maximum transmission power being used to determine a maximum output power of the first terminal device, and the first maximum transmission power and the second maximum transmission power being associated with the same carrier of the same cell.

[0057] In possible designs, the transceiver module is further configured to receive a first maximum transmit power from the first network device and the processing module is further configured to determine a maximum output power based on the first maximum transmit power, or the transceiver module is further configured to receive a first maximum transmit power and a second maximum transmit power from the first network device and the processing module is further configured to determine a maximum output power based on the first maximum transmit power and the second maximum transmit power, or the transceiver module is further configured to receive a first maximum transmit power and a second maximum transmit power from the first network device and the processing module is further configured to determine a maximum output power based on the first maximum transmit power.

[0058] In a possible design, the first maximum transmission power is less than the second maximum transmission power, and the second maximum transmission power is configured in the uplink frequency information signaling unit.

[0059] In a possible design, the first indication information is located in one or more of the following signaling: system information block (SIB) signaling, radio resource control (RRC) signaling, medium access control (MAC) control element (CE) signaling, or downlink control information (DCI) signaling.

[0060] In a possible design, the transmit power for SRS transmission opportunity n satisfies:

number

[0061] In a possible design, the transmit power for SRS transmission opportunity n satisfies:

number

[0062] According to a sixth aspect, an embodiment of the present application provides a communication device. The communication device may be used in a first network device to implement functions performed by the first network device in the second aspect or a possible design of the second aspect. The communication device may be the first network device itself, or may be a chip or system-on-chip configured to implement the functions of the first network device. The communication device may implement the functions performed by the first network device by executing corresponding software through hardware. The hardware or software may include one or more modules corresponding to the aforementioned functions, such as a transceiver module and a processing module. The processing module is configured to generate first indication information, and the transceiver module is configured to transmit the first indication information to the first terminal device, the first indication information including path loss information related to a sounding reference signal (SRS), and the path loss information is used by the first terminal device to determine a transmit power of the SRS, or the first indication information includes the transmit power of the SRS.

[0063] In possible designs, the path loss information includes a path loss value, or the path loss information includes a path loss value range, or the path loss information includes an index of the path loss value, or the path loss information includes an index of a path loss value range.

[0064] In a possible design, the transceiver module is further configured to receive second indication information from the first terminal device, the second indication information including a power headroom report for SRS transmission opportunity m, where m is an integer.

[0065] In a possible design, the transceiver module is further configured to receive third indication information from the second terminal device, the third indication information including a crosslink interference CLI measurement result of the SRS.

[0066] In possible designs, the processing module is further configured to determine path loss information associated with the transmit power of the SRS transmission opportunity n based on the power headroom report for the SRS transmission opportunity m and the SRS CLI measurement results, or the processing module is further configured to determine the transmit power of the SRS transmission opportunity n based on the power headroom report for the SRS transmission opportunity m and the SRS CLI measurement results, where n is an integer and n is greater than m.

[0067] In a possible design, the transceiver module is further configured to transmit the first maximum transmission power and / or the second maximum transmission power to the first terminal device, the first maximum transmission power and / or the second maximum transmission power being used to determine a maximum output power of the first terminal device, and the first maximum transmission power and the second maximum transmission power being associated with the same carrier of the same cell.

[0068] In possible designs, the transceiver module is further configured to transmit a first maximum transmission power to the first terminal device, the first maximum transmission power being used to determine a maximum output power; or the transceiver module is further configured to transmit the first maximum transmission power and a second maximum transmission power to the first terminal device, the first maximum transmission power and the second maximum transmission power being used to determine a maximum output power; or the transceiver module is further configured to transmit the first maximum transmission power and a second maximum transmission power to the first terminal device, the first maximum transmission power being used to determine a maximum output power.

[0069] In a possible design, the first maximum transmission power is less than the second maximum transmission power, and the second maximum transmission power is configured in the uplink frequency information signaling unit.

[0070] In a possible design, the first indication information is located in one or more of the following signaling: system information block (SIB) signaling, radio resource control (RRC) signaling, medium access control (MAC) control element (CE) signaling, or downlink control information (DCI) signaling.

[0071] In a possible design, the transmit power for SRS transmission opportunity n satisfies:

number

[0072] In a possible design, the transmit power for SRS transmission opportunity n satisfies:

number

[0073] According to a seventh aspect, an embodiment of the present application provides a communication device. The communication device may be used in a first terminal device to implement functions performed by the first terminal device in the third aspect or a possible design of the third aspect. The communication device may be the first terminal device itself, or may be a chip or system-on-chip configured to implement the functions of the first terminal device. The communication device may implement the functions performed by the first terminal device by executing corresponding software through hardware. The hardware or software may include one or more modules corresponding to the functions, such as a transceiver module and a processing module. The transceiver module is configured to receive a first maximum transmission power and / or a second maximum transmission power from a first network device, and the processing module is configured to determine a maximum output power of the first terminal device based on the first maximum transmission power and / or the second maximum transmission power, where the first maximum transmission power and the second maximum transmission power are associated with the same carrier of the same cell.

[0074] In possible designs, the transceiver module is further configured to receive a first maximum transmit power from the first network device and the processing module is configured to determine a maximum output power based on the first maximum transmit power, or the transceiver module is further configured to receive a first maximum transmit power and a second maximum transmit power from the first network device and the processing module is configured to determine a maximum output power based on the first maximum transmit power and the second maximum transmit power, or the transceiver module is further configured to receive the first maximum transmit power and a second maximum transmit power from the first network device and the processing module is further configured to determine a maximum output power based on the first maximum transmit power.

[0075] In a possible design, the first maximum transmission power is less than the second maximum transmission power, and the second maximum transmission power is configured in the uplink frequency information signaling unit.

[0076] According to an eighth aspect, an embodiment of the present application provides a communication device. The communication device may be used in a first network device to implement functions performed by the first network device in the fourth aspect or a possible design of the fourth aspect. The communication device may be the first network device itself, or may be a chip or system-on-chip configured to implement the functions of the first network device. The communication device may implement the functions performed by the first network device by executing corresponding software through hardware. The hardware or software may include one or more modules corresponding to the aforementioned functions, such as a transceiver module and a processing module. The processing module is configured to determine a first maximum transmission power and / or a second maximum transmission power, and the transceiver module is configured to transmit the first maximum transmission power and / or the second maximum transmission power to a first terminal device, the first maximum transmission power and / or the second maximum transmission power being used to determine a maximum output power of the first terminal device, and the first maximum transmission power and the second maximum transmission power being associated with the same carrier of the same cell.

[0077] In possible designs, the transceiver module is specifically configured to transmit a first maximum transmission power to the first terminal device, the first maximum transmission power being used to determine a maximum output power, or the transceiver module is specifically configured to transmit a first maximum transmission power and a second maximum transmission power to the first terminal device, the first maximum transmission power and the second maximum transmission power being used to determine a maximum output power, or the transceiver module is specifically configured to transmit a first maximum transmission power and a second maximum transmission power to the first terminal device, the first maximum transmission power being used to determine a maximum output power.

[0078] In a possible design, the first maximum transmission power is less than the second maximum transmission power, and the second maximum transmission power is configured in the uplink frequency information signaling unit.

[0079] According to a ninth aspect, an embodiment of the present application provides a communication device, the communication device including one or more processors, the one or more processors configured to execute computer programs or instructions, and when the one or more processors execute the computer programs or instructions, the communication device is enabled to perform the communication method according to any one of the first to fourth aspects.

[0080] In a possible design, the communication device further includes one or more memories, coupled to the one or more processors, configured to store the aforementioned computer programs or instructions. In a possible implementation, the memory is located external to the communication device. In another possible implementation, the memory is located internal to the communication device. In this embodiment of the present application, the processor and memory may alternatively be integrated into one device. In other words, the processor and memory may alternatively be integrated together. In a possible implementation, the communication device further includes a transceiver. The transceiver is configured to receive information and / or transmit information.

[0081] In a possible design, the communication device further includes one or more communication interfaces, the one or more communication interfaces coupled to the one or more processors, and the one or more communication interfaces configured to communicate with modules other than the communication device.

[0082] According to a tenth aspect, an embodiment of the present application provides a communication device, the communication device including an input / output interface and a logic circuit. The input / output interface is configured to input and / or output information. The logic circuit is configured to perform a communication method according to any one of the first to fourth aspects to perform processing based on the information and / or generate information.

[0083] According to an eleventh aspect, an embodiment of the present application provides a computer-readable storage medium, the computer-readable storage medium storing computer instructions or programs, which, when executed on a computer, cause a communication method according to any one of the first to fourth aspects to be performed.

[0084] According to a twelfth aspect, an embodiment of the present application provides a computer program product comprising computer instructions, which, when executed on a computer, enables a communication method according to any one of the first to fourth aspects to be performed.

[0085] According to a thirteenth aspect, an embodiment of the present application provides a computer program which, when run on a computer, enables the communication method according to any one of the first to fourth aspects to be performed.

[0086] For the technical effects provided by the design method of any one of the ninth to thirteenth aspects, please refer to the technical effects provided by any one of the first to fourth aspects.

[0087] According to a fourteenth aspect, an embodiment of the present application provides a communication system, which may include a communication device according to the fifth aspect or any one of its possible designs and a communication device according to the sixth aspect or any one of its possible designs, or includes a communication device according to the seventh aspect or any one of its possible designs and a communication device according to the eighth aspect or any one of its possible designs. [Brief explanation of the drawings]

[0088] [Figure 1] FIG. 1 is a diagram of a TDD system according to an embodiment of the present application. [Figure 2]FIG. 1 is a diagram of an SBFD system according to an embodiment of the present application. [Figure 3] FIG. 1 is a diagram of an SFFD system according to an embodiment of the present application. [Figure 4] FIG. 1 is an illustration of cross-link interference according to an embodiment of the present application. [Figure 5] 1 is a diagram of a communication system according to an embodiment of the present application; [Figure 6] 1 is a diagram of a communication system according to an embodiment of the present application; [Figure 7] 1 is a diagram of a communication system according to an embodiment of the present application; [Figure 8] 1 is a diagram of a communication device according to an embodiment of the present application; [Figure 9] 1 is a flowchart of a communication method according to an embodiment of the present application. [Figure 10] 1 is a flowchart of a communication method according to an embodiment of the present application. [Figure 11] 1 is a diagram of a configuration of a communication device according to an embodiment of the present application; [Figure 12] 1 is a diagram of a configuration of a communication device according to an embodiment of the present application; DETAILED DESCRIPTION OF THE INVENTION

[0089] Before the embodiments of the present application are described, technical terms used in the embodiments of the present application will be explained.

[0090] 5th-generation (5G) mobile new radio (NR) wireless communications systems are deployed in the medium-high frequency bands and use large bandwidths to achieve high data rates and low latency.

[0091] Time division duplexing (TDD) system: Different slots of the same frequency domain resource may be used for uplink and downlink communication between a terminal device and a network device, and the receive and transmit channels are separated using time, i.e., the symbol transmission direction may be configured as uplink, downlink, or flexible, and the symbol transmission direction is configured for the entire component carrier (CC).

[0092] In a TDD system, the downlink (DL) typically occupies the majority of time resources, resulting in a coverage imbalance between the DL and the uplink (UL), as shown in Figure 1. Compared with a frequency division duplexing (FDD) system, the TDD system has poorer uplink coverage and higher uplink delay.

[0093] Subband Full Duplex (SBFD) System: To address the uplink coverage and delay issues in TDD systems, an SBFD solution has been proposed. In the SBFD solution, one CC may be divided into multiple subbands, and the transmission directions of different subbands in one symbol may be different, i.e., different frequency domain resources (subbands) may be used for uplink and downlink. A typical SBFD solution is shown in Figure 2. The middle subband is the uplink subband, and the upper and lower subbands are downlink subbands. In the SBFD solution, the transmission directions of different subbands in one symbol in one CC are different, i.e., transmission and reception can be performed simultaneously in one symbol.

[0094] Single Frequency Full Duplex (SFFD) System: To address the uplink coverage and delay issues in TDD systems, a SFFD solution has been further proposed. In the SFFD solution, the same frequency domain resources can be used for uplink and downlink. A typical SFFD solution is shown in Figure 3. Reception and transmission of one symbol can be performed simultaneously across CCs.

[0095] Based on the above description, a communication mechanism of "subband full duplex on the network device side and half duplex on the terminal device side" can be used. The half duplex of the terminal device means that in a TDD system, the terminal device can only receive or transmit, but cannot receive and transmit simultaneously in one symbol. This communication mechanism increases the uplink transmission resources available to the terminal device, thereby effectively improving UL coverage and reducing UL delay.

[0096] Crosslink interference (CLI): In a communication system, when a network device communicates with a terminal device, crosslink interference may exist between the uplink and downlink due to signal power leakage (signal power of one subband leaks into an adjacent subband). According to the source of interference, crosslink interference mainly includes two types. The first type is crosslink interference between terminal devices, which mainly refers to the uplink signal transmitted by a terminal device (i.e., an interfering terminal device) causing interference to the downlink signal received by another terminal device (i.e., an interfered terminal device). The second type is crosslink interference between network devices, which mainly refers to the downlink signal transmitted by a network device (i.e., an interfering network device) causing interference to the uplink signal received by another network device (i.e., an interfered network device).

[0097] The interfering terminal device and the interfered terminal device may be located in the coverage areas of different network devices, or may be located in the coverage areas of the same network device, or may be located in one cell of the same network device, but this is not limited thereto.

[0098] 4, when terminal device 1 or terminal device 2 (i.e., an interfering terminal device) transmits an uplink signal (UL signal) to network device 1, crosslink interference may be caused to a downlink signal (DL signal) received by terminal device 0 (i.e., an interfered terminal device). When network device 0 (i.e., an interfering network device) transmits a downlink signal to terminal device 0, crosslink interference may be caused to an uplink signal received by network device 1 (i.e., an interfered network device).

[0099] In an example in which crosslink interference may be caused to a downlink signal received by terminal device 0 when terminal device 1 or terminal device 2 transmits an uplink signal (e.g., a sounding reference signal (SRS)) to network device 1, network device 1 may configure one or more SRS resources for each terminal device (e.g., terminal device 1 or terminal device 2), and the terminal device transmits the SRS on the SRS resource. The SRS may be used by a terminal device of network device 0 (e.g., terminal device 0) to measure a reference signal received power (RSRP) of the terminal device-terminal device CLI. Network device 0 may configure a time-frequency resource for each terminal device (e.g., terminal device 0) to receive the SRS transmitted by a terminal device of network device 1 (e.g., terminal device 1 or terminal device 2) and measure the RSRP of the terminal device-terminal device CLI (i.e., terminal device 0 does not receive a downlink signal of network device 0 on the time-frequency resource, but receives the SRS of terminal device 1 or terminal device 2). When network device 1 configures different SRS resources for each terminal device, for example, when terminal device 1 transmits SRS on SRS resource 1 and terminal device 2 transmits SRS on SRS resource 2, terminal device 0 of network device 0 may separately perform measurements of the time-frequency resources corresponding to SRS resource 1 and SRS resource 2 to obtain the RSRP of the CLI of terminal device 1-terminal device 0 and the RSRP of the CLI of terminal device 2-terminal device 0. The above method may be referred to as SRS-RSRP measurement.

[0100] Alternatively, network device 0 may configure a time-frequency resource for terminal device 0 to measure a received signal strength indicator (RSSI) of a CLI caused by a terminal device of network device 1. Terminal device 0 may measure the RSSI of the CLI at time-frequency resource n. Thus, terminal device 0 may obtain the RSSI of the CLI of terminal device-terminal device caused by a different terminal device of network device 1, i.e., may obtain the RSSI of the CLI of terminal device 1-terminal device 0 and the RSSI of the CLI of terminal device 2-terminal device 0 separately. The above method may be referred to as CLI-RSSI measurement.

[0101] Both of the above two measurement methods may be used for terminal device-terminal device CLI measurements, and the different resources for CLI measurements involved in the above two measurement methods may be collectively referred to as CLI measurement resources. Network device 0 may indicate the configured time-frequency resources to terminal device 0 for SRS-RSRP measurements and / or CLI-RSSI measurements using higher layer signaling or downlink control information (DCI). Terminal device 0 may report the corresponding measurement results to network device 0 using radio resource control (RRC) signaling.

[0102] When transmitting the SRS, the terminal device may determine the transmission power of the SRS based on a downlink reference signal transmitted by the network device, and transmit the SRS based on the determined transmission power of the SRS.

[0103] For example, the downlink reference signal may be, but is not limited to, a channel state information-reference signal (CSI-RS) or a synchronization signal and a physical broadcast channel block (PBCH block) signal.

[0104] Based on the above description of crosslink interference, when an interfering terminal device is located at a cell edge, the path loss between the interfering terminal device and the network device is large. As a result, the transmission power of the SRS determined by the interfering terminal device may be large, or even reach the maximum transmission power of the terminal device. When the interfered terminal device is close to the interfering terminal device, the interfered terminal device may be directly disturbed due to the large received power of the SRS and cannot operate normally. Therefore, how to reduce the impact of the interfering terminal device on the interfered terminal device and ensure the normal operation of the interfered terminal device has become a technical problem that needs to be urgently solved.

[0105] To solve the aforementioned technical problems, an embodiment of the present application provides a communication method, which may include: a first terminal device receives first indication information from a first network device; and transmits an SRS based on a transmission power determined based on the first indication information, wherein the first indication information includes path loss information related to a sounding reference signal (SRS), and the path loss information is used by the first terminal device to determine the transmission power of the SRS, or the first indication information includes the transmission power of the SRS.

[0106] In the embodiment of the present application, compared with the method in which the first terminal device determines the transmission power of the SRS based on the downlink reference signal transmitted by the first network device, the method in which the first terminal device determines the transmission power of the SRS based on the first indication information transmitted by the first network device can reduce the transmission power of the SRS, thereby reducing the impact of the interfering terminal device on the interfered terminal device, ensuring the normal operation of the interfered terminal device, enabling CLI measurement between the terminal devices, and improving system performance and efficiency.

[0107] Hereinafter, implementations of embodiments of the present application will be described in detail with reference to the accompanying drawings.

[0108] The communication method provided in the embodiments of the present application may be applied to any communication system. The communication system may be a third generation partnership project (3GPP) communication system, such as a long term evolution (LTE) system, or may be a 5G mobile communication system, a NR communication system, or a new wireless vehicle-to-everything (NR V2X) system. The communication method may further be applied to an LTE and 5G hybrid networking system, or may be applied to a non-terrestrial network (NTN) system, a device-to-device (D2D) communication system, a machine-to-machine (M2M) communication system, the Internet of Things (IoT), and another next-generation communication system, such as a future communication system like 6G. Alternatively, the communication system may be a non-3GPP communication system. This is not limited thereto.

[0109] The following uses FIG. 5 as an example to describe the communication system provided in the embodiment of the present application.

[0110] 5 is a diagram of a communication system according to one embodiment of the present application. As shown in FIG. 5, the communication system may include one or more terminal devices (e.g., terminal device 101 to terminal device 106) and one or more network devices (e.g., network device 110).

[0111] The terminal device of Figure 5 may be located within a cell coverage area of ​​a network device, and the terminal device may be connected to the air interface of the network device in the manner shown in Figure 6. For example, the terminal device may perform air interface communication with the network device via an uplink or a downlink. For example, the terminal device may transmit uplink data to the network device in the uplink direction via a physical uplink shared channel (PUSCH), and the network device may transmit downlink data to the terminal device in the downlink direction via a physical downlink shared channel (PDSCH).

[0112] The terminal device in FIG. 5 may be a device with wireless transceiver functionality, or a chip or chip system that can be disposed within the device, and is configured to enable a user to access a network and provide the user with a voice and / or data connection. The terminal device may also collect data, receive control information and downlink data for network devices, transmit electromagnetic waves, and transmit uplink data to network devices. The terminal device may also be referred to as user equipment (UE), subscriber unit, terminal, mobile station (MS), mobile terminal (MT), etc. Specifically, the terminal device in FIG. 5 may be a cellular phone, a smartphone, a wireless data card, a mobile phone, a personal digital assistant (PDA), a computer, a tablet computer, or a computer with wireless transceiver functionality, a wireless modem, a handheld device, a laptop computer, a smart sound box, a train detector, a gas station sensor, etc. Alternatively, the terminal device may be, but is not limited to, a VR terminal, an AR terminal, a wireless terminal in industrial control, a wireless terminal in autonomous driving, a wireless terminal in remote medical care, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, a machine type communication (MTC) terminal, an in-vehicle terminal, a vehicle with vehicle-to-vehicle (V2V) communication capability, an intelligent connected vehicle, or an unmanned aerial vehicle with unmanned aerial vehicle (UAV to UAV, U2U) communication capability.

[0113] 5 may be any device deployed in an access network that can perform wireless communication with a terminal device, may be described as an access device used by a terminal device to access a communication system in a wireless manner, or may be a chip or chip system that can be disposed in a device and is primarily configured to perform functions such as wireless physical control functions, resource scheduling and radio resource management, radio access control, and mobility management. Specifically, the network device may be a device supporting wired access or a device supporting wireless access. For example, the network device may be an access network (AN) device / radio access network (RAN) device and include multiple AN / RAN nodes. An AN / RAN node may be an access point (AP), a Node B (NB), a macro base station, a micro base station (also described as a small cell), a pico base station, a balloon station, a relay station, an enhanced Node B (eNB), a next generation eNB (ng-eNB), a next generation Node B (gNB), a base station of a 5G communication system, a base station of a future mobile communication system, or an access node of a wireless fidelity (WiFi) system, a transmission reception point (TRP), a transmission point (TP), a transmission measurement function (TMF), a wearable device, an in-vehicle device, or another access node, etc. The specific technology used by the network device and the specific device form are not limited in the embodiments of the present application.

[0114] Alternatively, the network device may be of a central unit (CU) / distributed unit (DU) architecture. In this case, the network device may include two network elements: a CU and a DU. Alternatively, the network device may be of a control plane-user plane (CP-UP) architecture. In this case, the network device may include three network elements: a control plane of the CU (CU-CP), a user plane of the CU (CU-UP), and a DU. This is not limited thereto.

[0115] Optionally, the network device and the terminal device may be deployed on land, including indoor or outdoor devices, handheld devices, or vehicle-mounted devices, or may be deployed on water, or may be deployed in the air by aircraft, balloons, or satellites. In the embodiments of the present application, the application scenarios of the network device and the terminal device are not limited.

[0116] For example, the communication system shown in FIG. 5 may be any communication system in which cross-link interference exists.

[0117] For example, as shown in Figure 7, the communication system may be a communication system that uses a communication mechanism of "subband full-duplex on the network device side and half-duplex on the terminal device side." For example, there are two terminal devices within the coverage area of ​​network device 0 (the number of terminal devices in the figure is an example, and the number of terminal devices may be different in an actual scenario). When terminal device 0 transmits an uplink signal to network device 0, crosslink interference may be caused to the downlink signal received by terminal device 1 due to signal power leakage.

[0118] It should be noted that the terminal device and the network device in the embodiments of the present application may each be one or more chips, or may be a system on chip (SoC), etc. FIG. 5 is merely an exemplary diagram, and the number of devices included in FIG. 5 is not limited. In addition, in addition to the devices shown in FIG. 5, the communication system may further include other devices, for example, a wireless relay device and a wireless backhaul device. The names of the devices and links in FIG. 5 are not limited. In addition to the names shown in FIG. 5, the devices and links may alternatively have other names. This is not limited.

[0119] In a specific implementation, as shown in Fig. 5, for example, each terminal device or each network device may use the configuration structure shown in Fig. 8 or include the components shown in Fig. 8. Fig. 8 is a diagram of the configuration of a communication device 800 according to an embodiment of the present application. The communication device 800 may be a terminal device or a chip or system-on-chip within a terminal device, or may be a network device or a chip or system-on-chip within a network device. As shown in Fig. 8, the communication device 800 includes a processor 801, a transceiver 802, and a communication line 803.

[0120] Additionally, the communications device 800 may further include a memory 804. The processor 801, the memory 804, and the transceiver 802 may be connected via a communications line 803.

[0121] The processor 801 may be a central processing unit (CPU), a general-purpose processor, a network processor (NP), a digital signal processor (DSP), a microprocessor, a microcontroller, a programmable logic device (PLD), or any combination thereof. Alternatively, the processor 801 may be another device having processing capabilities, such as a circuit, a component, or a software module, without limitation.

[0122] The transceiver 802 is configured to communicate with another device or another communication network. The other communication network may be an Ethernet, a radio access network (RAN), or a wireless local area network (WLAN), etc. The transceiver 802 may be a module, a circuit, a transceiver, or any apparatus capable of implementing communications.

[0123] The communication lines 803 are configured to transfer information between components included in the communication device 800 .

[0124] The memory 804 is configured to store instructions, which may be a computer program.

[0125] Memory 804 may be, without limitation, read-only memory (ROM) or another type of static storage device capable of storing static information and / or instructions, random access memory (RAM) or another type of dynamic storage device capable of storing information and / or instructions, electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD-ROM) or other compact disc storage, optical disc storage (including compact optical disc, laser disc, optical disc, digital versatile disc, or Blu-ray disc, etc.), or magnetic disc storage medium or other magnetic storage device.

[0126] It should be noted that the memory 804 may exist independently of the processor 801 or may be integrated with the processor 801. The memory 804 may be configured to store instructions, program codes, some data, etc. The memory 804 may be located inside the communication device 800 or outside the communication device 800. This is not limited thereto. The processor 801 is configured to execute instructions stored in the memory 804 to implement the communication methods provided in the following embodiments of the present application.

[0127] In one example, processor 801 may include one or more CPUs, for example, CPU0 and CPU1 of FIG.

[0128] In an optional implementation, the communications device 800 includes multiple processors. For example, the communications device 800 may further include a processor 807 in addition to the processor 801 of FIG.

[0129] In an optional embodiment, the communication apparatus 800 further includes an output device 805 and an input device 806. For example, the input device 806 is a device such as a keyboard, a mouse, a microphone, or a joystick, and the output device 805 is a device such as a display or a speaker.

[0130] It should be noted that the communication device 800 may be a desktop computer, a portable computer, a network server, a mobile phone, a tablet computer, a wireless terminal, an embedded device, a chip system, or a device having a structure similar to that of Figure 8. Additionally, the configuration structure shown in Figure 8 does not constitute a limitation on the communication device. In addition to the components shown in Figure 8, the communication device may include more or fewer components, a combination or division of some components, or a different component layout than those shown in the figure.

[0131] In this embodiment of the present application, the chip system may include the chip, or may include the chip and another separate component.

[0132] In addition, actions and terms in the embodiments of the present application may be cross-referenced. This is not a limitation. In the embodiments of the present application, the names of messages exchanged between devices or the names of parameters in messages are merely examples. Alternatively, other names may be used in specific implementations. This is not a limitation.

[0133] With reference to the communication system shown in FIG. 5, a communication method provided in one embodiment of the present application will be described with reference to FIG. 9. The first terminal device may be any terminal device in the communication system shown in FIG. 5, and the first network device may be a serving network device of the first terminal device, or the first terminal device will be described as belonging to the first network device. The terminal device and network device described in the following embodiments may have the components shown in FIG. 8. The processing performed by a single executing entity (terminal device or network device) shown in the embodiments of the present application may alternatively be performed by multiple executing entities. These executing entities may be logically and / or physically separated. This is not limited thereto.

[0134] 9 is a flowchart of a communication method according to an embodiment of the present application. As shown in FIG. 9, the method may include the following steps:

[0135] Step 901: A first network device generates first indication information.

[0136] The first indication information may include path loss information associated with the SRS, and the path loss information may be used by the first terminal device to determine the transmission power of the SRS, or the first indication information may include the transmission power of the SRS.

[0137] For example, the first network device may determine path loss information related to the transmit power of the SRS transmission opportunity n based on the power headroom report of the SRS transmission opportunity m and the CLI measurement results of the SRS (e.g., the SRS-RSRP). Alternatively, the first network device may determine the transmit power of the SRS transmission opportunity n based on the power headroom report of the SRS transmission opportunity m and the CLI measurement results of the SRS (e.g., the SRS-RSRP).

[0138] where m and n are integers and n is greater than m.

[0139] Optionally, the first network device may obtain a power headroom report and an SRS CLI measurement result for an SRS transmission opportunity m by referring to the following method shown in Figure 10. The method may include the following steps:

[0140] Step 1001: The first terminal device determines the transmission power of an SRS transmission opportunity m.

[0141] Before the first terminal device determines the transmission power of the SRS transmission opportunity m, the first network device may send configuration information of the SRS to the first terminal device, as shown in step 1000 of Figure 10. The configuration information may include information related to the SRS, such as the time-frequency resource occupied by the SRS, the sequence, and power control.

[0142] In a possible design, the first terminal device may determine the transmit power of the SRS transmission opportunity m based on the partial path loss compensation mechanism and the downlink reference signal transmitted by the first network device.

[0143] As shown in steps 1001a and 1001b of FIG. 10, the first network device may transmit a downlink reference signal to the first terminal device, and the first terminal device may determine path loss information related to the transmission power of the SRS transmission opportunity m based on the downlink reference signal, and determine the transmission power of the SRS transmission opportunity m based on the path loss information.

[0144] The downlink reference signal may be a CSI-RS signal, an SSB signal, etc. This is not limited thereto.

[0145] For example, in an example where a terminal device transmits an SRS on an active uplink bandwidth part (BWP) b of carrier f of serving cell c using SRS power control adjustment state l, the terminal device may determine the transmit power of SRS transmission opportunity m according to the following equation:

number

[0146] Optionally, the maximum output power P of the first terminal device CMAX,f,c For example, if the first network device configures the maximum output power of the first terminal device, the maximum output power may be the maximum output power configured by the first network device, or if the first network device does not configure the maximum output power of the first terminal device, the maximum output power may be the maximum output power defined by the capabilities of the first terminal device.

[0147] When the first network device configures the maximum output power of the first terminal device, the first network device may transmit the first maximum transmission power and / or the second maximum transmission power to the first terminal device and determine the maximum output power of the first terminal device based on the first maximum transmission power and / or the second maximum transmission power.

[0148] Optionally, the first maximum transmit power and the second maximum transmit power may be associated with the same carrier of the same cell.

[0149] In a first example, the first network device transmits a second maximum transmission power to the first terminal device and determines the maximum output power based on the second maximum transmission power.

[0150] When the first network device configures a second maximum transmission power but does not configure a first maximum transmission power for the first terminal device, the first network device or the first terminal device may determine the second maximum transmission power as the maximum output power of the first terminal device.

[0151] In a second example, the first network device transmits a first maximum transmission power to the first terminal device and determines a maximum output power based on the first maximum transmission power.

[0152] When the first network device configures a first maximum transmission power but does not configure a second maximum transmission power for the first terminal device, the maximum output power P CMAX,f,csatisfies the following formula: P CMAX,L,f,c ≦P CMAX,f,c ≦P CMAX,H,f,c ,

number

number

[0153] In a third example, the first network device transmits a first maximum transmission power and a second maximum transmission power to the first terminal device and determines a maximum output power based on the first maximum transmission power and the second maximum transmission power.

[0154] When the first network device configures both the first maximum transmission power and the second maximum transmission power for the first terminal device, the maximum output power P CMAX,f,c satisfies the following formula: P CMAX,L,f,c ≦P CMAX,f,c ≦P CMAX,H,f,c ,

number

number

[0155] Optionally, in a third example, the value relationship between the first maximum transmission power and the second maximum transmission power may not be limited.

[0156] In a fourth example, the first network device transmits a first maximum transmission power and a second maximum transmission power to the first terminal device, and determines the maximum output power based on the first maximum transmission power.

[0157] When the first network device configures both the first maximum transmission power and the second maximum transmission power for the first terminal device, if the first maximum transmission power is less than the second maximum transmission power, the maximum output power P CMAX,f,c satisfies the following formula: P CMAX,L,f,c ≦P CMAX,f,c ≦P CMAX,H,f,c ,

number

number

[0158] Based on the above description of the first maximum transmission power and the second maximum transmission power, optionally, the second maximum transmission power may be placed in an uplink frequency information signaling unit. For example, the second maximum transmission power is the p-Max field in the signaling unit FrequencyInfoUL or FrequencyInfoUL-SIB in the prior art. The first maximum transmission power is a newly introduced p-Max that is different from the existing p-Max in the prior art. Preferably, the first maximum transmission power may be used only for SRS. Alternatively, the first maximum transmission power may be used for uplink signals or channels other than SRS.

[0159] Optionally, the first maximum transmit power may be placed in one or more of the following signaling: RRC signaling or system information block 1 (SIB1) signaling, etc. This is not limited thereto.

[0160] Optionally, the first maximum transmit power may be less than the second maximum transmit power.

[0161] Optionally, the first maximum transmission power may become effective when the first terminal device determines the transmission power of the first SRS, or may always be effective in subsequent SRS transmission processes. The first maximum transmission power becoming effective when the first terminal device determines the transmission power of the first SRS may be considered as the first maximum transmission power becoming effective at the stage when the first terminal device first transmits the SRS, for example, the first time the SRS is transmitted, or the first few times or the first period when the SRS is transmitted, and the time may be configured by the network device or may be predefined, for example, 5 ms or 10 ms, or a time before the first indication information is received.

[0162] In a possible embodiment, the value range of the first maximum transmission power is (-30, X) dBm, where X is an integer and is less than or equal to 33. For example, the value of X is 0, -5, or -15. The value of X is related to the interference power of the terminal device and the coupling loss between the terminal devices. When the interference power of the terminal device is -56 dBm and the coupling loss between the terminal devices is not greater than 40 dB, the first maximum transmission power is not greater than -16 dBm, that is, the value of X is -16 dBm.

[0163] Based on the above description of the maximum output power, an additional first maximum transmission power is introduced based on the second maximum transmission power, which can prevent the second terminal device from being disturbed due to the SRS initially transmitted by the first terminal device.

[0164] Step 1002: The first terminal device transmits an SRS at a transmission opportunity m based on the transmission power of the SRS transmission opportunity m.

[0165] Step 1003: The second terminal device performs a CLI measurement on the SRS sent by the first terminal device to obtain a CLI measurement result.

[0166] The second terminal device may be any terminal device that can perform CLI measurements on the SRS transmitted by the first terminal device, i.e., the first terminal device may be referred to as an interfering terminal device, and the second terminal device may be referred to as an interfered terminal device.

[0167] Optionally, the first terminal device and the second terminal device may belong to different network devices, or may belong to the same network device, or may even belong to the same cell of the same network device, but this is not limited thereto.

[0168] Step 1004: The first terminal device sends second indication information to the first network device, and in response, the first network device receives second indication information from the first terminal device.

[0169] The second indication information may include a power headroom report (PHR) for SRS transmission opportunity m.

[0170] The power headroom report for SRS transmission opportunity m may be used to determine path loss information associated with the transmit power of SRS transmission opportunity n, or the power headroom report for SRS transmission opportunity m may be used to determine the transmit power of SRS transmission opportunity n, where m and n are integers and n is greater than m.

[0171] For example, the first terminal device may determine the power headroom report for the SRS transmission opportunity m according to the following equation: PH type3,b,f,c (m,q s )=P CMAX,f,c (m)-{P O_SRS,b,f,c (q s )+10log 10 (2 μ M SRS,b,f,c (m))+α SRS,b,f,c (q s )·PL b,f,c (q d )+h b,f,c (m)}, where: PH type3,b,f,c (m,q s ) represents the power headroom report for SRS transmission opportunity m. For other parameters, please refer to the relevant description of the formula for calculating the transmit power for SRS transmission opportunity m in step 1001.

[0172] Step 1005: The second terminal device sends third indication information to the first network device, and in response, the first network device receives the third indication information from the second terminal device.

[0173] The third indication information may include a CLI measurement result of the SRS.

[0174] For example, the CLI measurement may be the RSRP of the SRS (or may be written as SRS-RSRP).

[0175] When the second terminal device and the first terminal device belong to different network devices, as shown in steps 1005a and 1005b of Figure 10, the second terminal device may send third indication information including the SRS CLI measurement result to a serving network device (e.g., the second network device) of the second terminal device, and the second network device may send the received third indication information to the first network device. Alternatively, the second terminal device may send the third indication information to the first network device via an intermediate device.

[0176] Alternatively, when the second terminal device and the first terminal device belong to the same network device (i.e., the first network device), the second terminal device may directly send third indication information including the CLI measurement result of the SRS to the first network device, as shown in step 1005c of FIG. 10.

[0177] Optionally, the reporting method of the CLI measurement results may include, but is not limited to, periodic reporting, aperiodic reporting, semi-persistent reporting, and event-triggered reporting.

[0178] For event-triggered reporting, for example, when the CLI measurement exceeds a certain threshold, the reporting of the CLI measurement may be triggered, or otherwise the CLI measurement is not reported. The threshold may be predefined or configured by the network and is not limited.

[0179] Optionally, the CLI measurement results may be reported at the L1 / L2 level, i.e., via the PUCCH / PUSCH by multiplexing the CSI reporting process, or at the L3 level, i.e., using the radio resource management (RRM) measurement reporting process. For L3 level reporting, L3 filtering needs to be performed, and the filtering coefficients may be configured by the network.

[0180] 10, it should be noted that the order in which steps 1003 and 1004 are performed is not limited. Step 1003 may be performed before step 1004, or step 1004 may be performed before step 1003, or steps 1003 and 1004 may be performed simultaneously. Similarly, the order in which steps 1004 and 1005 are performed is not limited. Step 1004 may be performed before step 1005, or step 1005 may be performed before step 1004, or steps 1004 and 1005 may be performed simultaneously. This is not limited.

[0181] Based on the method shown in FIG. 10 , the first network device may obtain a power headroom report and an SRS CLI measurement result for SRS transmission opportunity m, and may determine path loss information related to the transmit power for SRS transmission opportunity n based on the following first possible design, or may determine the transmit power for SRS transmission opportunity n based on the following second possible design.

[0182] Optionally, the CLI measurement results used to calculate the transmit power of the SRS transmission opportunity n or the path loss information related to the transmit power of the SRS transmission opportunity n may be CLI measurement results of one or more SRSs prior to the transmission opportunity n, or may be an average value of CLI measurement results of multiple SRSs prior to the transmission opportunity n, as is not limited thereto.

[0183] In a first possible design, the first network device determines path loss information associated with the transmit power of SRS transmission opportunity n based on the power headroom report of SRS transmission opportunity m and the CLI measurement results of the SRS.

[0184] For example, the first network device may determine the path loss information associated with the transmit power of the SRS transmission opportunity n according to the following equation: Pathloss=P TX -P RX [dB], and

number

[0185] Optionally, the first indication information including the path loss information may be placed in a path loss information indication field, the length of which may be predefined in a communication protocol or configured by a network, but is not limited thereto.

[0186] For example, the path loss information may include a path loss value, or the path loss information may include a path loss value range, or the path loss information may include an index of a path loss value, or the path loss information may include an index of a path loss value range.

[0187] Optionally, the path loss information is within a preset path loss range, which may be predefined in a communication protocol or configured by the network, without limitation.

[0188] Optionally, if the path loss information calculated by the first network device is within a preset path loss range, the first network device adds the calculated path loss information to first instruction information and sends the first instruction information to the first terminal device. If the path loss information calculated by the first network device exceeds the preset path loss range, the first network device may add a minimum value of the preset path loss range to the first instruction information and send the first instruction information to the first terminal device.

[0189] For example, the lower limit of the preset path loss range is X, where X may be no greater than 60 dB, such as 45 dB, 40 dB, or 35 dB. The upper limit of the preset path loss range is Y, where Y may be no less than 80 dB, such as 150 dB, 170 dB, or 180 dB.

[0190] Optionally, when the first network device indicates the path loss information to the first terminal device, the indicated step may be 1 dB or greater than 1 dB, for example, an integer multiple step such as 2 dB or 3 dB, etc. The step may be predefined in a protocol or configured by the network. This is not limited.

[0191] Optionally, the candidate path loss value range may be quantized into X levels, with each level step being Y dB. In this case, the path loss information indication field is

number

[0192] For example, the candidate path loss value range is [70 dB, 169 dB]. Assuming the step is 2 dB, the candidate path loss value range can be divided into 50 levels as shown in Table 1, and a total of 6 bits are required for indication, i.e., the path loss information indication field can include 6 bits.

[0193] [Table 1]

[0194] In a second possible design, the first network device determines the transmit power for SRS transmission opportunity n based on the power headroom report for SRS transmission opportunity m and the CLI measurement results for the SRS.

[0195] The first network device may determine path loss information associated with the transmit power of the SRS transmission opportunity n based on the power headroom report of the SRS transmission opportunity m and the CLI measurement results of the SRS, and may determine the transmit power of the SRS transmission opportunity n based on the path loss information.

[0196] For example, the first network device may determine the transmit power for the SRS transmission opportunity n according to the following formula:

number

[0197] Optionally, the first network device directly indicates the transmit power of the SRS transmission opportunity n or the path loss information related to the transmit power of the SRS transmission opportunity n to the first terminal device, so that the first network device does not need to indicate the power control adjustment state to the first terminal device, thereby reducing signaling overhead. In other words, the value of the power control adjustment state related to the SRS may be 0. Alternatively, the first network device may determine the transmit power of the SRS transmission opportunity n according to the following formula:

number

[0198] For example, the first indication information may include a transmission power value of the SRS, or the first indication information may include an index of the transmission power value of the SRS.

[0199] Optionally, a transmission power of the SRS indicated by the first network device to the first terminal device using the first indication information is less than or equal to a maximum output power of the first terminal device.

[0200] If the transmission power of the SRS calculated by the first network device is less than or equal to the maximum output power of the first terminal device, the first network device may add the calculated transmission power of the SRS to first indication information and send the first indication information to the first terminal device.If the transmission power of the SRS calculated by the first network device is greater than the maximum output power of the first terminal device, the first network device may use the maximum output power as the transmission power of the SRS, add the transmission power of the SRS to the first indication information, and send the first indication information to the first terminal device.

[0201] Step 902: The first network device sends first indication information to the first terminal device, and in response, the first terminal device receives the first indication information from the first network device.

[0202] The first indication information may include path loss information associated with the SRS, and the path loss information is used by the first terminal device to determine the transmission power of the SRS, or the first indication information may include the transmission power of the SRS.

[0203] For example, the first indication information may be located in one or more of the following signaling: SIB signaling, RRC signaling, medium access control control element (MAC CE) signaling, or DCI signaling. That is, the first network device may semi-statically indicate the first indication information using higher layer signaling such as RRC signaling or MAC CE signaling, or may dynamically indicate the first indication information using DCI.

[0204] The DCI signaling may be a unicast DCI or a UE group common DCI, but is not limited thereto.

[0205] In a first possible design, when the first indication information includes path loss information associated with the SRS, the first terminal device may determine a transmit power of the SRS based on the path loss information.

[0206] For example, the first terminal device may determine the transmit power for the SRS transmission opportunity n according to the following equation:

number

[0207] Optionally, the first network device directly indicates path loss information related to the transmit power of the SRS transmission opportunity n to the first terminal device, so that the first network device does not need to indicate the power control adjustment state to the first terminal device, thereby reducing signaling overhead. In other words, the value of the power control adjustment state related to the SRS may be 0. Alternatively, the first terminal device may determine the transmit power of the SRS transmission opportunity n according to the following formula:

number

[0208] In a second possible design, when the first indication information includes the transmit power of the SRS, the first terminal device may directly determine the transmit power of the SRS based on the first indication information.

[0209] In the aforementioned two possible designs, optionally, the transmission power of the SRS determined by the first terminal device is less than or equal to the maximum output power of the first terminal device.

[0210] If the transmission power of the SRS calculated by the first terminal device is less than or equal to the maximum output power of the first terminal device, the first terminal device may use the calculated transmission power of the SRS as the transmission power of the SRS.If the transmission power of the SRS calculated by the first terminal device is greater than the maximum output power of the first terminal device, the first terminal device may use the maximum output power as the transmission power of the SRS.

[0211] If the transmission power of the SRS indicated by the first network device is less than or equal to the maximum output power of the first terminal device, the first terminal device may use the transmission power of the SRS indicated by the first network device as the transmission power of the SRS.If the transmission power of the SRS indicated by the first network device is greater than the maximum output power of the first terminal device, the first terminal device may use the maximum output power as the transmission power of the SRS.

[0212] Step 903: The first terminal device transmits an SRS based on the transmission power determined based on the first indication information.

[0213] The first terminal device may determine the transmission power of the SRS based on the first indication information and transmit the SRS.

[0214] Based on the method shown in FIG. 9, compared with the method in which the first terminal device determines the transmission power of the SRS based on the downlink reference signal transmitted by the first network device, the method in which the transmission power of the SRS is determined based on the first indication information transmitted by the first network device can reduce the transmission power of the SRS, thereby reducing the impact of the interfering terminal device on the interfered terminal device, ensuring the normal operation of the interfered terminal device, enabling CLI measurement between the terminal devices, and improving system performance and efficiency.

[0215] Optionally, based on the method shown in Figure 9, when the first terminal device transmits the first SRS, the first network device does not use the first indication information to indicate the path loss information or transmission power associated with the SRS to the first terminal device. In this case, the first terminal device may refer to the method shown in step 1001 to calculate the path loss information based on the downlink reference signal transmitted by the first network device to determine the transmission power of the SRS.

[0216] After the first terminal device transmits the SRS at least once, the first network device may determine first indication information with reference to the method shown in Figure 9 and transmit the first indication information to the first terminal device. Thereafter, the first terminal device may determine the transmission power of the SRS based on the first indication information transmitted by the first network device, and transmit the SRS.

[0217] It should be noted that the solution of step 1001 in which the first network device configures the maximum output power of the first terminal device may be implemented with reference to the solution shown in Figure 9, or may be implemented independently of the solution shown in Figure 9. This is not limited thereto.

[0218] It can be understood that in the embodiments of the present application, an executing entity may perform some or all of the steps in the embodiments of the present application. The steps or operations are merely examples. The embodiments of the present application may further include performing other operations or various variations of the operations. In addition, the steps may be performed in an order different from that presented in the embodiments of the present application, and all operations in the embodiments of the present application need not be performed.

[0219] The foregoing mainly describes the solutions provided in the embodiments of the present application from the perspective of interactions between devices. It can be understood that, to implement the aforementioned functions, each device includes a corresponding hardware structure and / or corresponding software module for performing each function. Those skilled in the art will readily recognize that the present application can be implemented by hardware or a combination of hardware and computer software, in combination with the algorithms and steps in the examples described in the embodiments disclosed herein. Whether the functions are implemented by hardware or hardware driven by computer software depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the present application.

[0220] In the embodiments of the present application, the device may be divided into functional modules based on the above-mentioned exemplary method. For example, each functional module may be obtained by division based on the corresponding function, or two or more functions may be integrated into one processing module. The integrated module may be implemented in the form of hardware or in the form of a software functional module. It should be noted that in the embodiments of the present application, the division into modules is an example and is merely a logical division of functions. In actual implementation, other division methods may be used.

[0221] 11 illustrates a communication device 110 obtained by dividing each functional module based on its corresponding function. The communication device 110 may perform the actions performed by the first terminal device, the second terminal device, the first network device, or the second network device in the methods illustrated in FIGS. 9 and 10. All relevant content of the steps in the aforementioned method embodiments may be referenced for descriptions of the functions of the corresponding functional modules. For technical effects that can be obtained by the communication device 110, please refer to the aforementioned method embodiments. Details will not be described here.

[0222] The communication device 110 may include a transceiver module 1101 and a processing module 1102. For example, the communication device 110 may be a communication device, a chip used in a communication device, or another composite device or component having the functionality of a communication device. When the communication device 110 is a communication device, the transceiver module 1101 may be a transceiver, which may include an antenna and radio frequency circuits, etc., and the processing module 1102 may be a processor (or processing circuit), such as a baseband processor, which may include one or more CPUs. When the communication device 110 is a component having the functionality of a communication device, the transceiver module 1101 may be a radio frequency unit, and the processing module 1102 may be a processor (or processing circuit), such as a baseband processor. When the communication device 110 is a chip system, the transceiver module 1101 may be an input / output interface of the chip (e.g., a baseband chip), and the processing module 1102 may be a processor (or processing circuit) of the chip system and may include one or more central processing units. It should be understood that in an embodiment of the present application, the transceiver module 1101 may be implemented by a transceiver or circuit components related to a transceiver, and the processing module 1102 may be implemented by a processor or circuit components related to a processor (also referred to as a processing circuit).

[0223] For example, transceiver module 1101 may be configured to perform all transmit and receive operations performed by the communications device in the embodiments shown in Figures 9 and 10 and / or may be configured to support other processes of the techniques described herein. Processing module 1102 may be configured to perform all operations other than transmit and receive operations performed by the communications device in the embodiments shown in Figures 9 and 10 and / or may be configured to support other processes of the techniques described herein.

[0224] In another possible implementation, the transceiver module 1101 in Figure 11 may be replaced by a transceiver, and the functionality of the transceiver module 1101 may be integrated into the transceiver. The processing module 1102 may be replaced by a processor, and the functionality of the processing module 1102 may be integrated into the processor. Furthermore, the communication device 110 shown in Figure 11 may further include a memory.

[0225] Alternatively, when the processing module 1102 is replaced with a processor and the transceiver module 1101 is replaced with a transceiver, the communication device 110 in the embodiment of the present application may be the communication device 120 shown in FIG. 12. The processor may be a logic circuit 1201, and the transceiver may be an interface circuit 1202. Furthermore, the communication device 120 shown in FIG. 12 may further include a memory 1203.

[0226] An embodiment of the present application further provides a computer program product, which, when executed by a computer, may implement the functions of any one of the above-mentioned method embodiments.

[0227] An embodiment of the present application further provides a computer program, which, when executed by a computer, can implement the functions of any one of the above-mentioned method embodiments.

[0228] An embodiment of the present application further provides a computer-readable storage medium. All or part of the procedures in the aforementioned method embodiments may be implemented by a computer program that instructs relevant hardware. The program may be stored in the aforementioned computer-readable storage medium. When the program is executed, the procedures of the aforementioned method embodiments may be performed. The computer-readable storage medium may be an internal storage unit in the terminal (including the data transmitting end and / or the data receiving end) in any one of the aforementioned embodiments, such as a hard disk or memory of the terminal. The computer-readable storage medium may alternatively be an external storage device of the terminal, such as a plug-in hard disk drive, a smart media card (SMC), a secure digital (SD) card, and a flash card configured on the terminal. Furthermore, the computer-readable storage medium may further include both an internal storage unit and an external storage device of the terminal. The computer-readable storage medium is configured to store the computer program as well as other programs and data required by the terminal. The computer-readable storage medium may further be configured to temporarily store output data or output data.

[0229] It should be noted that in the specification, claims, and accompanying drawings of this application, terms such as "first" and "second" are intended to distinguish between different objects and are not intended to describe a particular order. "First" and "second" are intended for descriptive purposes only and should not be understood as an indication or implication of relative importance or an implicit indication of the number of technical features shown. Thus, a feature qualified by "first" or "second" may explicitly or implicitly include one or more features. In the description of embodiments, unless otherwise specified, "plurality" means two or more.

[0230] Additionally, the terms "comprise" and "have," as well as any other variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes further steps or units that are not listed, or optionally includes further steps or units that are specific to the process, method, product, or device.

[0231] In this application, "at least one" should be understood to mean one or more. "Multiple" refers to two or more than two. "At least two" means two, three, or more than three. "And / or" is used to describe an association relationship between associated objects and indicates that three relationships may exist. For example, "A and / or B" may indicate three cases: only A is present, only B is present, and both A and B are present, where A and B may be singular or plural. The symbol " / " generally indicates an "or" relationship between associated objects. "At least one of the following" or similar expressions means any combination of these, including any combination of a single or multiple items. For example, at least one of a, b, or c may refer to a, b, c, a and b, a and c, b and c, or a, b, and c, where a, b, and c may be singular or plural. Both "when" and "if" mean that the corresponding processing is performed at the intended time, are not intended to be time-limited, do not require a decision action when performed, and do not imply any other limitation.

[0232] Additionally, in the embodiments of the present application, the words "example" or "for example" are used to denote serving as an example, illustration, or illustration. Any embodiment or design described in the embodiments of the present application as an "example" or "for example" is not described as being more preferred or having more advantages than another embodiment or design. Rather, the use of terms such as "example" or "for example" is intended to present related concepts in a particular way to facilitate understanding.

[0233] The above description of the embodiments allows those skilled in the art to understand that the division of the above functional modules is given as an example for the sake of convenience of explanation. In actual applications, the above functions can be allocated and implemented in different modules according to requirements, that is, the internal structure of the device is divided into different functional modules to implement all or part of the above-described functions.

[0234] In some embodiments provided in the present application, it should be understood that the disclosed devices and methods may be implemented in other ways. For example, the described device embodiments are merely examples. For example, the division into units or modules is merely a logical division of functions, and other divisions may be used in actual implementations. For example, multiple units or components may be combined or integrated into another device, or some features may be ignored or not implemented. In addition, the shown or described mutual couplings or direct couplings or communication connections may be implemented using some interfaces. Indirect couplings or communication connections between devices or units may be implemented in electronic, mechanical, or other forms.

[0235] The units described as separate parts may or may not be physically separate, and the parts presented as units may be one or more physical units, located in one location, or distributed in different locations. Some or all of the units may be selected based on actual requirements to achieve the objectives of the solutions of the embodiments.

[0236] In addition, the functional units in the embodiments of the present application may be integrated into one processing unit, each unit may exist physically alone, or two or more units may be integrated into one unit. The integrated unit may be implemented in the form of hardware or in the form of a software functional unit.

[0237] When the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, the integrated unit may be stored in a readable storage medium. Based on this understanding, the technical solutions of the embodiments of the present application may essentially, or all or part of the technical solutions may be implemented in the form of a software product. The software product is stored in a storage medium and includes several instructions for instructing a device (which may be a single-chip microcomputer or chip, etc.) or a processor to perform all or part of the steps of the method described in the embodiments of the present application. The aforementioned storage medium includes any medium capable of storing program code, such as a USB flash drive, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk. [Explanation of symbols]

[0238] 100 Communication Systems 101 Terminal Device 102 Terminal Devices 103 Terminal Devices 104 Terminal Devices 105 Terminal Devices 106 Terminal Devices 110 Network Devices 110 Communication equipment 120 Communication equipment 800 Communication Equipment 801 processor 802 Transceiver 803 communication line 804 memory 805 output device 806 Input Devices 807 processor 1101 Transceiver Module 1102 Processing Module 1201 Logic Circuit 1202 Interface circuit 1203 memory

Claims

1. 1. A communication method comprising: receiving, by a first terminal device, first indication information from a first network device, the first indication information including path loss information related to a sounding reference signal (SRS), the path loss information being used by the first terminal device to determine a transmission power of the SRS, or the first indication information including a transmission power of the SRS; transmitting, by the first terminal device, the SRS based on the transmission power determined based on the first indication information; A communication method including:

2. the path loss information includes a path loss value; or the path loss information includes a path loss value range; or the path loss information includes an index of a path loss value; or the path loss information includes an index of a path loss value range; The method of claim 1.

3. The method comprises: sending, by the first terminal device, second indication information to the first network device, the second indication information including a power headroom report for SRS transmission opportunity m, where m is an integer; 3. The method of claim 2, further comprising:

4. the power headroom report for the SRS transmission opportunity m is used to determine path loss information associated with the transmit power for SRS transmission opportunity n; or the power headroom report for the SRS transmission opportunity m is used to determine a transmit power for an SRS transmission opportunity n; n is an integer and n is greater than m, The method of claim 3.

5. The method comprises: receiving, by the first terminal device, a first maximum transmission power and / or a second maximum transmission power from the first network device, wherein the first maximum transmission power and / or the second maximum transmission power is used to determine a maximum output power of the first terminal device, and the first maximum transmission power and the second maximum transmission power are associated with the same carrier of the same cell.

5. The method of claim 1, further comprising:

6. receiving, by the first terminal device, the first maximum transmission power from the first network device; and determining, by the first terminal device, the maximum output power based on the first maximum transmission power; or receiving, by the first terminal device, the first maximum transmission power and the second maximum transmission power from the first network device; and determining, by the first terminal device, the maximum output power based on the first maximum transmission power and the second maximum transmission power; or receiving, by the first terminal device, the first maximum transmission power and the second maximum transmission power from the first network device, and determining, by the first terminal device, the maximum output power based on the first maximum transmission power; The method of claim 5.

7. the first maximum transmission power is less than the second maximum transmission power, and the second maximum transmission power is configured in an uplink frequency information signaling unit; 7. The method of claim 5 or 6.

8. The first indication information is located in one or more of the following signaling: a system information block (SIB) signaling, a radio resource control (RRC) signaling, a medium access control (MAC) control element (CE) signaling, or a downlink control information (DCI) signaling; 8. The method according to any one of claims 1 to 7.

9. The transmit power for SRS transmission opportunity n satisfies: [Equation 1] where: n is an integer and P SRS，b，f，c (n, q s , l) represents the transmission power of the SRS transmission opportunity n, min represents the minimum value, and P CMAX，f，c (n) represents the maximum output power, P O＿SRS，b，f，c (q s ) represents the expected received power in the active uplink bandwidth portion b of carrier f of serving cell c, and q s represents the index of the SRS resource set to which the SRS belongs, and M SRS，b，f，c (n) represents the SRS transmission bandwidth of the SRS transmission opportunity n in the active uplink bandwidth portion b of the carrier f of the serving cell c, and α SRS，b，f，c (q s ) represents the path loss compensation factor for the active uplink bandwidth portion b of the carrier f of the serving cell c, and PL b，f，c (q d ) represents the path loss information, and h b，f，c (n, l) represents a power control adjustment state associated with the SRS, and the value of the power control adjustment state is 0; 9. The method according to any one of claims 1 to 8.

10. The transmit power for SRS transmission opportunity n satisfies: [Equation 2] where: n is an integer and P SRS，b，f，c (n, q s , l) represents the transmission power of the SRS transmission opportunity n, min represents the minimum value, and P CMAX，f，c (n) represents the maximum output power, P O＿SRS，b，f，c (q s ) represents the expected received power in the active uplink bandwidth portion b of carrier f of serving cell c, and q s represents the index of the SRS resource set to which the SRS belongs, and M SRS，b，f，c (n) represents the SRS transmission bandwidth of the SRS transmission opportunity n in the active uplink bandwidth portion b of the carrier f of the serving cell c, and α SRS，b，f，c (q s ) represents the path loss compensation factor for the active uplink bandwidth portion b of the carrier f of the serving cell c, and PL b，f，c (q d ) represents the path loss information, 9. The method according to any one of claims 1 to 8.

11. generating, by a first network device, first indication information, wherein the first indication information includes path loss information related to a sounding reference signal (SRS), and the path loss information is used by the first terminal device to determine a transmission power of the SRS, or the first indication information includes a transmission power of the SRS; sending, by the first network device, the first instruction information to the first terminal device; A communication method including:

12. the path loss information includes a path loss value; or the path loss information includes a path loss value range; or the path loss information includes an index of a path loss value; or the path loss information includes an index of a path loss value range; The method of claim 11.

13. The method comprises: receiving, by the first network device, second indication information from the first terminal device, the second indication information including a power headroom report for an SRS transmission opportunity m, where m is an integer; 13. The method of claim 11 or 12, further comprising:

14. The method comprises: receiving, by the first network device, third indication information from a second terminal device, the third indication information including a crosslink interference CLI measurement result of the SRS; 14. The method of any one of claims 11 to 13, further comprising:

15. The step of generating the first indication information by the first network device includes: determining, by the first network device, path loss information associated with the transmit power for SRS transmission opportunity n based on the power headroom report for SRS transmission opportunity m and the CLI measurement results for the SRS; or determining, by the first network device, a transmit power for an SRS transmission opportunity n based on the power headroom report for the SRS transmission opportunity m and the CLI measurement results for the SRS; where n is an integer and n is greater than m, 15. The method of claim 13 or 14.

16. The method comprises: transmitting, by the first network device, a first maximum transmission power and / or a second maximum transmission power to the first terminal device, wherein the first maximum transmission power and / or the second maximum transmission power is used to determine a maximum output power of the first terminal device, and the first maximum transmission power and the second maximum transmission power are associated with the same carrier of the same cell.

16. The method of any one of claims 11 to 15, further comprising:

17. transmitting, by the first network device, the first maximum transmission power to the first terminal device, the first maximum transmission power being used to determine the maximum output power; or transmitting, by the first network device, the first maximum transmission power and the second maximum transmission power to the first terminal device, wherein the first maximum transmission power and the second maximum transmission power are used to determine the maximum output power; or transmitting, by the first network device, the first maximum transmission power and the second maximum transmission power to the first terminal device, wherein the first maximum transmission power is used to determine the maximum output power; 17. The method of claim 16.

18. the first maximum transmission power is less than the second maximum transmission power, and the second maximum transmission power is configured in an uplink frequency information signaling unit; 18. The method of claim 16 or 17.

19. The first indication information is located in one or more of the following signaling: a system information block (SIB) signaling, a radio resource control (RRC) signaling, a medium access control (MAC) control element (CE) signaling, or a downlink control information (DCI) signaling; 19. The method according to any one of claims 11 to 18.

20. The transmit power for SRS transmission opportunity n satisfies: [Equation 3] where: n is an integer and P SRS，b，f，c (n, q s , l) represents the transmission power of the SRS transmission opportunity n, min represents the minimum value, and P CMAX，f，c (n) represents the maximum output power, P O＿SRS，b，f，c (q s ) represents the expected received power in the active uplink bandwidth portion b of carrier f of serving cell c, and q s represents the index of the SRS resource set to which the SRS belongs, and M SRS，b，f，c (n) represents the SRS transmission bandwidth of the SRS transmission opportunity n in the active uplink bandwidth portion b of the carrier f of the serving cell c, and α SRS，b，f，c (q s ) represents the path loss compensation factor for the active uplink bandwidth portion b of the carrier f of the serving cell c, and PL b，f，c (q d ) represents the path loss information, and h b，f，c (n, l) represents a power control adjustment state associated with the SRS, and the value of the power control adjustment state is 0; 20. The method of any one of claims 11 to 19.

21. The transmit power for SRS transmission opportunity n satisfies: [Equation 4] where: n is an integer and P SRS，b，f，c (n, q s , l) represents the transmission power of the SRS transmission opportunity n, min represents the minimum value, and P CMAX，f，c (n) represents the maximum output power, P O＿SRS，b，f，c (q s ) represents the expected received power in the active uplink bandwidth portion b of carrier f of serving cell c, and q s represents the index of the SRS resource set to which the SRS belongs, and M SRS，b，f，c (n) represents the SRS transmission bandwidth of the SRS transmission opportunity n in the active uplink bandwidth portion b of the carrier f of the serving cell c, and α SRS，b，f，c (q s ) represents the path loss compensation factor for the active uplink bandwidth portion b of the carrier f of the serving cell c, and PL b，f，c (q d ) represents the path loss information, 20. The method of any one of claims 11 to 19.

22. 22. A communication device, the communication device comprising a processor, the processor configured to execute computer programs or instructions to enable the communication device to perform the communication method of any one of claims 1 to 10 or the communication method of any one of claims 11 to 21.

23. 22. A computer-readable storage medium storing computer instructions or programs that, when executed on a computer, enable the communication method of any one of claims 1 to 10 or the communication method of any one of claims 11 to 21 to be performed.

24. 22. A computer program product comprising computer instructions that, when part or all of the computer instructions are executed on a computer, enable the communication method according to any one of claims 1 to 10 or the communication method according to any one of claims 11 to 21 to be performed.

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