Communication method, apparatus and system

Abstract

The present application relates to the field of communications, and provides a communication method, apparatus and system. The method is applied to a terminal device, and the method comprises: receiving first indication information, wherein the first indication information is used for configuring a first resource set, and the first resource set comprises a plurality of SRS resources; and transmitting first power information to a network device when a first trigger condition is satisfied. On the basis of the method, the terminal device, during antenna switching for the plurality of SRS resources in the first resource set, can report the first power information to the network device, enabling the network device, in the process of performing channel estimation on the basis of an AS-SRS resource set, to perform certain error compensation on the channel estimation result on the basis of the first power information, thereby improving the accuracy of channel estimation by the network device.

Description

Communication method, device and system

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on April 3, 2024, with application number 202410417235.4 and invention name “Communication Method, Device and System”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of communications, and in particular to communication methods, devices, and systems. Background Art

[0003] The antenna switching-sounding reference signal (AS-SRS) is a crucial way for the network to understand channel conditions in communication systems. The terminal device transmits pre-configured SRS resources over the time-frequency-space resources indicated by the network device. The network device then performs channel estimation based on the received SRS resources and the associated communication parameters they carry. Leveraging the reciprocal nature of time-division duplex (TDD) channels, the network device effectively calculates and matches a downlink precoding matrix appropriate for the current channel conditions.

[0004] Typically, a terminal device has more concurrently operating receive radio frequency links than transmit radio frequency links. Therefore, to ensure that network equipment can obtain complete downlink channel information, the terminal device must utilize relatively few transmit radio frequency components to transmit SRS resources in rotation across a relatively large number of receive radio frequency links. When a terminal device uses multiple transmit radio frequency links to transmit SRS resources in rotation, improving the accuracy of channel estimation by network equipment is a pressing issue. Summary of the Invention

[0005] The embodiments of the present application provide a communication method, apparatus, and system that help improve the accuracy of channel estimation in network devices.

[0006] In a first aspect, a communication method is provided, which is applied to a terminal device, and the method includes: receiving first indication information from a network device, the first indication information is used to configure a first resource set, the first resource set is an AS-SRS resource set, and the first resource set includes multiple SRS resources; when a first trigger condition is met, sending first power information to the network device, the first trigger condition includes: each power in the first power set is equal to the maximum output power (configured maximum output power, Pcmax) configured by the terminal device, the first power set includes the power of each SRS resource in the first resource set sent by the terminal device, wherein the first power information includes a first difference, the first difference is the difference between the first power value and the second power value, the first power value is used to indicate the power of the first SRS resource in the first resource set sent by the terminal device, and the second power value is used to indicate the power of the second SRS resource in the first resource set sent by the terminal device.

[0007] For example, before receiving the first indication information from the network device, the terminal device may also perform the following operations: send a first signaling to the network device, where the first signaling is used to indicate the AS-SRS mode set supported by the terminal device; the network device determines the above-mentioned first indication information based on the first signaling, and then sends the above-mentioned first indication information to the terminal device.

[0008] For example, the first indication information and / or the second indication information may be sent to the terminal device by the network device when performing initial configuration or reconfiguration of radio resource control (RRC) involving changing the AS-SRS mode of the terminal device. The first indication information and / or the second indication information may also be part of the RRC signaling sent by the network device to the terminal device.

[0009] For example, the first power information may further include the first power value, and may even include a second power value, a third power value, and the like.

[0010] It should be understood that the first difference mentioned above can be understood as a relative insertion loss value, and the relative insertion loss value refers to the difference between the insertion loss values ​​in the transmission power adopted by different ports of the terminal device when sending SRS resources.

[0011] Based on the above technical solution, the terminal device can flexibly and actively send the first power information to the network device, so that the network device can obtain the first difference in the first power information in a timely manner, thereby compensating the channel estimation result to a certain extent. Moreover, by setting trigger conditions, the terminal device is constrained in determining the first power set and sending the first power information to the network device, so that the terminal device needs to meet certain trigger conditions before determining the first power set or sending the first power information to the network device, thereby effectively avoiding the terminal device from frequently sending the first power information with the same content to the network device, so as to save the signaling overhead of the communication system, and ensure that the terminal device can report the updated first power information to the network device at the appropriate time. In addition, the process of the terminal device reporting the first power information in this solution is simple, and the accuracy of the SRS-based channel estimation is improved without occupying too many uplink resources, thereby improving network performance.

[0012] In combination with the first aspect, in certain implementations of the first aspect, the number of ports used by the above-mentioned terminal device to send each SRS resource in the first resource set is greater than 1, the above-mentioned first power value includes the first port power corresponding to the first port used to send the first SRS resource, and the second port power corresponding to the second port used to send the first SRS resource, the above-mentioned second power value includes the third port power corresponding to the third port used to send the second SRS resource, and the fourth port power corresponding to the fourth port used to send the second SRS resource, and the above-mentioned first difference includes the difference between the first port power and the third port power, and the difference between the second port power and the fourth port power.

[0013] Based on the above technical solution, the terminal device can provide the above first power information to the network device with finer granularity, which helps the network device to perform more accurate channel estimation.

[0014] In combination with the first aspect, in certain implementations of the first aspect, the above-mentioned first trigger condition also includes: the difference between the first difference and the second difference is greater than the first threshold value, the second difference is the difference between the first power value and the second power value in the first power information previously sent by the terminal device to the network device, and the first threshold value is greater than or equal to 0.

[0015] In combination with the first aspect, in some implementations of the first aspect, the method further includes: receiving a first threshold value from a network device.

[0016] In combination with the first aspect, in some implementations of the first aspect, the first trigger condition also includes: the maximum power reduction (MPR) value, additional-maximum power reduction (A-MPR) value or power management-maximum power reduction (P-MPR) value corresponding to each power in the first power set are the same, and MPR, A-MPR or P-MPR is used to configure the maximum output power of the terminal device.

[0017] In combination with the first aspect, in some implementations of the first aspect, the above-mentioned first trigger condition also includes: the physical antenna port used for rotating the first SRS resource in the first resource set changes after the terminal device previously sent the first power information.

[0018] Based on the above technical solution, by expanding the first trigger condition, the terminal device can make corresponding judgments on the combination of multiple conditions in the first trigger condition to determine whether to trigger the reporting of the first power information, so that the terminal device can report the first power information to the network device at a more appropriate time, further saving the signaling overhead of the communication system.

[0019] In combination with the first aspect, in some implementations of the first aspect, an SRS is sent to the network device through multiple SRS resources in the first resource set according to the first power information.

[0020] In a second aspect, a communication method is provided, which is applied to a network device, and the method includes: sending first indication information to a terminal device, the first indication information is used to configure a first resource set, the first resource set is a sounding reference signal AS-SRS resource set for antenna rotation transmission, and the first resource set includes multiple sounding reference signal SRS resources; receiving first power information and a first resource set from the terminal device, wherein the first power information includes a first difference, the first difference is the difference between the first power value and the second power value, the first power value is used to indicate the power of the first SRS resource in the first resource set sent by the terminal device, and the second power value is used to indicate the power of the second SRS resource in the first resource set sent by the terminal device; performing channel estimation based on the first power information and the first resource set.

[0021] In combination with the second aspect, in certain implementations of the second aspect, the number of ports used by the terminal device to send each SRS resource in the first resource set is greater than 1, the first power value includes a first port power corresponding to the first port used to send the first SRS resource, and a second port power corresponding to the second port used to send the first SRS resource, the second power value includes a third port power corresponding to the third port used to send the second SRS resource, and a fourth port power corresponding to the fourth port used to send the second SRS resource, and the first difference includes the difference between the first port power and the third port power, and the difference between the second port power and the fourth port power.

[0022] In combination with the second aspect, in certain implementations of the second aspect, a first threshold value is sent to the terminal device, the first threshold value is greater than or equal to 0, the first threshold value is used to determine a first trigger condition, the first trigger condition is used to trigger the terminal device to send first power information to the network device, the first trigger condition includes: the difference between the first difference and the second difference is greater than the first threshold value, the second difference is the difference between the first power value and the second power value in the first power information sent by the terminal device to the network device last time.

[0023] According to a third aspect, a communication method is provided, which is applied to a terminal device, and the method includes: receiving first indication information from a network device, the first indication information being used to configure a first resource set, the first resource set being a sounding reference signal AS-SRS resource set for antenna rotation transmission, the first resource set including multiple sounding reference signal SRS resources; receiving second indication information from the network device, the second indication information being used to instruct the terminal device to send first power information, wherein the first power information includes a first difference, the first difference being the difference between the first power value and the second power value, the first power value being used to indicate the power of the first SRS resource in the first resource set sent by the terminal device, and the second power value being used to indicate the power of the second SRS resource in the first resource set sent by the terminal device; and sending the first power information to the network device.

[0024] Based on the above technical solution, during the process of transmitting multiple SRS resources in the first resource set in antenna rotation, the terminal device can report to the network device the relative insertion loss value (represented by the first difference) between the power when sending the first SRS resource in the first resource set and the power of other SRS resources, so that the network device can perform a certain degree of error compensation on the channel estimation result based on the relative insertion loss value during the process of channel estimation based on the AS-SRS resource set, so as to improve the accuracy of the channel estimation of the network device. In addition, the process of reporting the first power information by the terminal device in this solution is simple, and the process is only triggered when the network device is performing RRC initial configuration or reconfiguration involving changing the AS-SRS mode of the terminal device. The terminal device does not need to report multiple times, saving the signaling overhead of the communication system.

[0025] In combination with the third aspect, in certain implementations of the third aspect, the number of ports used by the terminal device to send each SRS resource in the first resource set is greater than 1, the first power value includes a first port power corresponding to the first port used to send the first SRS resource, and a second port power corresponding to the second port used to send the first SRS resource, the second power value includes a third port power corresponding to the third port used to send the second SRS resource, and a fourth port power corresponding to the fourth port used to send the second SRS resource, and the first difference includes the difference between the first port power and the third port power, and the difference between the second port power and the fourth port power.

[0026] In combination with the third aspect, in certain implementations of the third aspect, an SRS is sent to a network device through multiple SRS resources in a first resource set according to the first power information.

[0027] In a fourth aspect, a communication method is provided, which is applied to a network device, and the method includes: sending first indication information to a terminal device, the first indication information is used to configure a first resource set, the first resource set is a sounding reference signal AS-SRS resource set for antenna rotation transmission, and the first resource set includes multiple SRS resources; sending second indication information to the terminal device, the second indication information is used to instruct the terminal device to send first power information, wherein the first power information includes a first difference, the first difference is the difference between the first power value and the second power value, the first power value is used to indicate the power of the first SRS resource in the first resource set sent by the terminal device, and the second power value is used to indicate the power of the second SRS resource in the first resource set sent by the terminal device; performing channel estimation based on the first power information and the first resource set.

[0028] In combination with the fourth aspect, in certain implementations of the fourth aspect, the number of ports used by the terminal device to send each SRS resource in the first resource set is greater than 1, the first power value includes a first port power corresponding to the first port used to send the first SRS resource, and a second port power corresponding to the second port used to send the first SRS resource, the second power value includes a third port power corresponding to the third port used to send the second SRS resource, and a fourth port power corresponding to the fourth port used to send the second SRS resource, and the first difference includes the difference between the first port power and the third port power, and the difference between the second port power and the fourth port power.

[0029] In a fifth aspect, a communication device is provided, which is applied to a terminal device, and the device includes: a receiving unit, used to receive first indication information from a network device, the first indication information is used to configure a first resource set, the first resource set is a sounding reference signal AS-SRS resource set for antenna rotation transmission, and the first resource set includes multiple sounding reference signal SRS resources; a first sending unit, used to send first power information to the network device when a first trigger condition is met, the first trigger condition includes: each power in the first power set is equal to the maximum output power configured by the terminal device, the first power set includes the power of each SRS resource in the first resource set sent by the terminal device, the first power information includes a first difference, the first difference is the difference between the first power value and the second power value, the first power value is used to indicate the power of the terminal device to send the first SRS resource in the first resource set, and the second power value is used to indicate the power of the terminal device to send the second SRS resource in the first resource set.

[0030] In combination with the fifth aspect, in certain implementations of the fifth aspect, the number of ports used by the terminal device to send each SRS resource in the first resource set is greater than 1, the first power value includes a first port power corresponding to the first port used to send the first SRS resource, and a second port power corresponding to the second port used to send the first SRS resource, the second power value includes a third port power corresponding to the third port used to send the second SRS resource, and a fourth port power corresponding to the fourth port used to send the second SRS resource, and the first difference includes the difference between the first port power and the third port power, and the difference between the second port power and the fourth port power.

[0031] In combination with the fifth aspect, in certain implementations of the fifth aspect, the first trigger condition also includes: the difference between the first difference and the second difference is greater than the first threshold value, the second difference is the difference between the first power value and the second power value in the first power information previously sent by the terminal device to the network device, and the first threshold value is greater than or equal to 0.

[0032] In combination with the fifth aspect, in some implementations of the fifth aspect, the receiving unit is further used to: receive a first threshold value from a network device.

[0033] In combination with the fifth aspect, in certain implementations of the fifth aspect, the first trigger condition also includes: the MPR, A-MPR or P-MPR corresponding to each power in the first power set are the same, and the MPR, A-MPR or P-MPR is used to configure the maximum output power of the terminal device.

[0034] In combination with the fifth aspect, in certain implementations of the fifth aspect, the first trigger condition also includes: a physical antenna port used for rotating transmission of the first SRS resource in the first resource set changes after the terminal device previously sent the first power information.

[0035] In combination with the fifth aspect, in certain implementations of the fifth aspect, the apparatus further includes: a second sending unit, configured to send an SRS to the network device through multiple SRS resources in the first resource set according to the first power information.

[0036] In a sixth aspect, a communication device is provided, which is applied to a network device, and the device includes: a sending unit, used to send first indication information to a terminal device, the first indication information is used to configure a first resource set, the first resource set is a sounding reference signal AS-SRS resource set for antenna rotation transmission, and the first resource set includes multiple sounding reference signal SRS resources; a receiving unit, used to receive first power information and a first resource set from a terminal device, the first power information includes a first difference, the first difference is the difference between the first power value and the second power value, the first power value is used to indicate the power of the first SRS resource in the first resource set sent by the terminal device, and the second power value is used to indicate the power of the second SRS resource in the first resource set sent by the terminal device; a processing unit, used to perform channel estimation based on the first power information and the first resource set.

[0037] In combination with the sixth aspect, in certain implementations of the sixth aspect, the number of ports used by the terminal device to send each SRS resource in the first resource set is greater than 1, the first power value includes a first port power corresponding to the first port used to send the first SRS resource, and a second port power corresponding to the second port used to send the first SRS resource, the second power value includes a third port power corresponding to the third port used to send the second SRS resource, and a fourth port power corresponding to the fourth port used to send the second SRS resource, and the first difference includes the difference between the first port power and the third port power, and the difference between the second port power and the fourth port power.

[0038] In combination with the sixth aspect, in certain implementations of the sixth aspect, the above-mentioned sending unit is also used to: send a first threshold value to the terminal device, the first threshold value is greater than or equal to 0, the first threshold value is used to determine a first trigger condition, the first trigger condition is used to trigger the terminal device to send first power information to the network device, the first trigger condition includes: the difference between the first difference and the second difference is greater than the first threshold value, and the second difference is the difference between the first power value and the second power value in the first power information sent by the terminal device to the network device last time.

[0039] In the seventh aspect, a communication device is provided, which is applied to a terminal device, and the device includes: a receiving unit, used to receive first indication information from a network device, the first indication information is used to configure a first resource set, the first resource set is a sounding reference signal AS-SRS resource set for antenna rotation transmission, and the first resource set includes multiple sounding reference signal SRS resources; the receiving unit is also used to receive second indication information from the network device, the second indication information is used to instruct the terminal device to send first power information, the first power information includes a first difference, the first difference is the difference between the first power value and the second power value, the first power value is used to indicate the power of the terminal device to send the first SRS resource in the first resource set, and the second power value is used to indicate the power of the terminal device to send the second SRS resource in the first resource set; a first sending unit, used to send the first power information to the network device.

[0040] In combination with the seventh aspect, in certain implementations of the seventh aspect, the number of ports used by the terminal device to send each SRS resource in the first resource set is greater than 1, the first power value includes a first port power corresponding to the first port used to send the first SRS resource, and a second port power corresponding to the second port used to send the first SRS resource, the second power value includes a third port power corresponding to the third port used to send the second SRS resource, and a fourth port power corresponding to the fourth port used to send the second SRS resource, and the first difference includes the difference between the first port power and the third port power, and the difference between the second port power and the fourth port power.

[0041] In combination with the seventh aspect, in some implementations of the seventh aspect, the above-mentioned apparatus further includes: a second sending unit, configured to send an SRS to the network device through multiple SRS resources in the first resource set according to the first power information.

[0042] In the eighth aspect, a communication device is provided, which is applied to a network device, and the device includes: a sending unit, used to send first indication information to the terminal device, the first indication information is used to configure a first resource set, the first resource set is a sounding reference signal AS-SRS resource set for antenna rotation transmission, and the first resource set includes multiple SRS resources; the sending unit is also used to send second indication information to the terminal device, the second indication information is used to instruct the terminal device to send first power information, the first power information includes a first difference, the first difference is the difference between the first power value and the second power value, the first power value is used to indicate the power of the first SRS resource in the first resource set sent by the terminal device, and the second power value is used to indicate the power of the second SRS resource in the first resource set sent by the terminal device; a processing unit, used to perform channel estimation based on the first power information and the first resource set.

[0043] In combination with the eighth aspect, in certain implementations of the eighth aspect, the number of ports used by the terminal device to send each SRS resource in the first resource set is greater than 1, the first power value includes a first port power corresponding to the first port used to send the first SRS resource, and a second port power corresponding to the second port used to send the first SRS resource, the second power value includes a third port power corresponding to the third port used to send the second SRS resource, and a fourth port power corresponding to the fourth port used to send the second SRS resource, and the first difference includes the difference between the first port power and the third port power, and the difference between the second port power and the fourth port power.

[0044] In the ninth aspect, a communication device is provided, comprising a processor and a memory, wherein the processor and the memory are connected, wherein the memory is used to store program code, and the processor is used to call the program code to execute a method in any possible implementation of the method design of the first to fourth aspects above.

[0045] In a tenth aspect, a communication system is provided, comprising: a first communication device for executing a method in any possible implementation of the method design of the first or third aspect; and a second communication device for executing a method in any possible implementation of the method design of the second or fourth aspect. Alternatively, the system comprises a terminal device and a network device, the terminal device comprising a communication device in any possible implementation of the device design of the fifth aspect, the network device comprising a communication device in any possible implementation of the device design of the sixth aspect, or the terminal device comprising a communication device in any possible implementation of the device design of the seventh aspect, the network device comprising a communication device in any possible implementation of the device design of the eighth aspect.

[0046] In the eleventh aspect, a chip system is provided, which is applied to an electronic device; the chip system includes one or more interface circuits and one or more processors; the interface circuit and the processor are interconnected through lines; the interface circuit is used to receive signals from the memory of the electronic device and send signals to the processor, and the signals include computer instructions stored in the memory; when the processor executes the computer instructions, the electronic device executes the method in any possible implementation of the method design of the first to fourth aspects above.

[0047] In the twelfth aspect, a computer-readable storage medium is provided, storing a computer program or instruction, which is used to implement the method in any possible implementation manner in the method design of the first to fourth aspects.

[0048] In the thirteenth aspect, a computer program product is provided. When the computer program code or instructions are executed on a computer, the computer executes a method in any possible implementation of the method design of the first to fourth aspects above. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] FIG1 is a schematic diagram of a communication system;

[0050] FIG2 is a schematic diagram of an AS-SRS mode supported by a terminal device;

[0051] FIG3 is a flow chart of a communication method 300 proposed in an embodiment of the present application;

[0052] FIG4 is a flow chart of a communication method 400 proposed in an embodiment of the present application;

[0053] FIG5 is a schematic block diagram of a communication device 500 provided in an embodiment of the present application;

[0054] FIG6 is a schematic block diagram of a communication device 600 provided in an embodiment of the present application;

[0055] FIG7 is a schematic block diagram of a communication system 700 provided in an embodiment of the present application;

[0056] FIG8 is a schematic block diagram of a computer device 800 provided in an embodiment of the present application;

[0057] FIG9 is a schematic block diagram of a computer-readable storage medium 900 provided in an embodiment of the present application. DETAILED DESCRIPTION

[0058] The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings.

[0059] In order to facilitate understanding of the embodiments of the present application, the following points are first explained.

[0060] 1. Unless otherwise specified, “plurality” means two or more.

[0061] 2. Unless otherwise specified or there is no logical conflict, the terms and / or descriptions between different embodiments of this application are consistent and can be referenced by each other. The technical features in different embodiments can be combined to form new embodiments based on their internal logical relationships.

[0062] 3. The various numerical numbers involved in this application are only used for the convenience of description and are not used to limit the scope of protection of this application. The size of the serial numbers involved in this application does not mean the order of execution. The order of execution of each process should be determined by its function and internal logic. For example, the terms "first", "second", "third", "fourth" and other various terminology labels (if any) in the specification and claims and drawings of this application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. Among them, the data used in this way can be interchangeable where appropriate, so that the embodiments described here can be implemented in an order other than what is illustrated or described here.

[0063] At the same time, any embodiment or design described in this application as "exemplary" or "for example" should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner to facilitate understanding.

[0064] 4. The terms "comprise" and "have" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such process, method, product or apparatus.

[0065] 5. In this application, "used to indicate" can be understood as "enabling," and "enabling" can include direct enabling and indirect enabling. When describing that certain information is used to enable A, it can include that the information directly enables A or indirectly enables A, and does not necessarily mean that the information contains A.

[0066] The information enabled by the information is called information to be enabled. In the specific implementation process, there are many ways to enable the enabled information, such as but not limited to, directly enabling the information to be enabled, such as the information to be enabled itself or the index of the information to be enabled. The information to be enabled can also be indirectly enabled by enabling other information, wherein there is an association between the other information and the information to be enabled. It is also possible to enable only a part of the information to be enabled, while the other parts of the information to be enabled are known or agreed in advance. For example, it is also possible to enable specific information with the help of the arrangement order of each piece of information agreed in advance (such as specified in the protocol), thereby reducing the enabling overhead to a certain extent. At the same time, it is also possible to identify the common parts of each piece of information and enable them uniformly to reduce the enabling overhead caused by enabling the same information separately.

[0067] 6. In this application, "pre-configuration" may include pre-definition, such as protocol definition. "Pre-definition" may be implemented by pre-storing corresponding codes, tables, or other methods that can be used to indicate relevant information in a device (e.g., including each network element). This application does not limit the specific implementation method.

[0068] 7. "Storage" or "saving" as used in this application may refer to storage in one or more memories. The one or more memories may be provided separately or integrated into an encoder or decoder, a processor, or a communication device. The one or more memories may also be provided in part separately and in part integrated into a decoder, processor, or communication device. The type of memory may be any form of storage medium and is not limited thereto.

[0069] 8. The “protocol” referred to in this application may refer to a standard protocol in the field of communications, for example, it may include the fourth generation (4G) network, the fifth generation (5G) network protocol, the new radio (NR) protocol, and related protocols used in future communication systems. This application does not limit this.

[0070] 9. The arrows or boxes indicated by dotted lines in the schematic diagrams in the accompanying drawings of this application specification represent optional steps or optional modules.

[0071] 10. Unless otherwise specified, “ / ” indicates that the objects associated with each other are in an “or” relationship. For example, A / B can mean A or B. “And / or” in this application is only a description of the association relationship between the associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. A and B can be singular or plural.

[0072] 11. In this application, the phrase "sending information to ... (terminal)" should be understood to mean that the destination of the information is the terminal. This may include sending information directly or indirectly to the terminal. The phrase "receiving information from ... (terminal)" should be understood to mean that the source of the information is the terminal, which may include receiving information directly or indirectly from the terminal. Information may undergo necessary processing between the source and destination, such as formatting changes, but the destination can still understand the valid information from the source. Similar expressions in this application should be understood similarly and will not be elaborated on here.

[0073] For ease of understanding, the communication system shown in FIG1 is used as an example to describe the communication system applicable to various embodiments of the present application.

[0074] FIG1 is a schematic diagram of a communication system.

[0075] As shown in Figure 1 , the communications system includes a radio access network (RAN) 100 and a core network (CN) 200. RAN 100 includes at least one RAN node (e.g., 110a and 110b in Figure 1 , collectively referred to as 110) and at least one terminal device (e.g., 120a-120j in Figure 1 , collectively referred to as 120). The RAN may also include other RAN nodes, such as wireless relay devices and / or wireless backhaul devices (not shown in Figure 1 ). Terminal device 120 is wirelessly connected to RAN node 110. RAN node 110 is wirelessly or wiredly connected to core network 200. The core network devices in core network 200 and RAN node 110 in RAN 100 may be separate physical devices, or they may be a single physical device that integrates core network logical functions and radio access network logical functions.

[0076] The RAN node 110a, the RAN node 110b, and the terminal devices 120a-120j may collectively constitute multiple communication systems. For example, the RAN node 110a, the RAN node 110b, and the terminal devices 120a-120j may constitute a communication system, in which the RAN node 110a may send control information and / or transport blocks to the RAN node 110b or at least one of the terminal devices 120a-120j. The RAN node 110b and the terminal devices 120f-120g may also constitute a communication system, in which the RAN node 110b may send control information and / or transport blocks to at least one of the terminal devices 120f-120g. In addition, after the connection is established between the terminal devices, they can also be regarded as forming a communication system. For example, the terminal device 120a and the terminal device 120b, the terminal device 120e, and the terminal device 120d can form a communication system. In this communication system, the terminal device 120a can send control information and / or transmission blocks to at least one of the terminal devices 120b, 120e, and 120d.

[0077] The RAN 100 may be a cellular system related to the Third Generation Partnership Project (3GPP), such as 4G, 5G, and future mobile communication systems, a non-terrestrial network (NTN) system, or a future-oriented evolutionary system. The RAN 100 may also be an open access network (O-RAN or ORAN), a cloud radio access network (CRAN), or a wireless fidelity (WiFi) system, or a communication system that integrates two or more of the above systems.

[0078] In a communication system, a device can send signals to or receive signals from another device. Signals can include information, signaling, or data. Devices can also be replaced by entities, network entities, communication devices, communication modules, nodes, communication nodes, etc. The embodiments of this application are described using devices as an example.

[0079] In an embodiment of the present application, the terminal device 120 is a device with wireless transceiver functions, which may refer to user equipment (UE), access terminal, subscriber unit, user station, mobile station, remote station, remote terminal, mobile device, user terminal, wireless communication device, user agent or user device.

[0080] In the embodiment of the present application, the terminal device 120 may also be a satellite phone, a cellular phone, a smart phone, a wireless data card, a wireless modem, a machine type communication device, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a customer-premises equipment (CPE), a smart point of sale (POS) machine, a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an on-board device, a communication device carried on a high-altitude aircraft, a wearable device, a drone, a robot, a terminal in device-to-device (D2D) communication, a terminal in vehicle-to-everything (V2X), a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal in industrial control, a wireless terminal in self-driving, a remote medical device, or a similar device. In the embodiments of the present application, the device for realizing the function of the terminal device may be a terminal device, or a device capable of supporting the terminal device to realize the function, such as a chip system or a chip, which may be installed in the terminal device. In the embodiments of the present application, the chip system may be composed of chips, or may include chips and other discrete devices.

[0081] In the embodiment of the present application, the terminal device 120 may also be a device with communication functions in a future communication system, and the form or type of the terminal device in other future communication systems is not limited.

[0082] In the embodiments of the present application, the RAN node 110 may also be referred to as an access network device, an access node, or a RAN entity, and is used to help terminal devices achieve wireless access. Multiple RAN nodes 110 may be nodes of the same type or different types. In some scenarios, the roles of the RAN node 110 and the terminal device 120 are relative. For example, the network element 120i in Figure 1 may be a helicopter or a drone, which may be configured as a mobile base station. For the terminal 120j that accesses the RAN 100 through the network element 120i, the network element 120i is a base station; but for the base station 110a, the network element 120i is a terminal device. The RAN node 110 and the terminal device 120 are sometimes referred to as communication devices. For example, the network elements 110a and 110b in Figure 1 may be understood as communication devices with base station functions, and the network elements 120a-120j may be understood as communication devices with terminal functions.

[0083] In one possible scenario, the RAN node 110 can also become a network device, which can be a base station, an evolved NodeB (eNodeB), an access point (AP), a transmission reception point (TRP), a next-generation NodeB (gNB), a next-generation base station in a future mobile communication system, a base station in a future mobile communication system, or an access node in a WiFi system. The RAN node can be a macro base station (such as 110a in Figure 1), a micro base station or an indoor station (such as 110b in Figure 1), a relay node or a donor node, or a wireless controller in a CRAN scenario. Optionally, the RAN node can also be a server, a wearable device, a vehicle or an on-board device, etc. For example, the access network device in the vehicle to everything (V2X) technology can be a road side unit (RSU).

[0084] In another possible scenario, multiple RAN nodes collaborate to assist terminals in achieving wireless access, with different RAN nodes implementing portions of the base station's functionality. For example, a RAN node can be a centralized unit (CU), a distributed unit (DU), a CU-control plane (CP), a CU-user plane (UP), or a radio unit (RU). The CU and DU can be separate or included in the same network element, such as the baseband unit (BBU). The CU and DU nodes split the gNB's protocol layers, centrally controlling some protocol layer functions within the CU and distributing some or all of the remaining protocol layer functions within the DU, which is then centrally controlled by the CU. As an implementation method, the CU is deployed with the RRC layer, the packet data convergence protocol (PDCP) layer, and the service data adaptation protocol (SDAP) layer in the protocol stack; the DU is deployed with the radio link control (RLC) layer, the medium access control (MAC) layer, and the physical layer (PHY) in the protocol stack. Thus, the CU has the processing capabilities of RRC, PDCP, and SDAP. The DU has the processing capabilities of RLC, MAC, and PHY. It will be understood that the above functional division is only an example and does not constitute a limitation on the CU and DU. The RU may be included in a radio frequency device or a radio frequency unit, for example, in a remote radio unit (RRU), an active antenna unit (AAU), or a remote radio head (RRH).

[0085] In different systems, CU (or CU-CP and CU-UP), DU or RU may also have different names, but those skilled in the art can understand their meanings. For example, in the ORAN system, CU may also be called O-CU (Open CU), DU may also be called O-DU, CU-CP may also be called O-CU-CP, CU-UP may also be called O-CU-UP, and RU may also be called O-RU. For the convenience of description, this application uses CU, CU-CP, CU-UP, DU and RU as examples for description. Any unit of CU (or CU-CP, CU-UP), DU and RU in this application can be implemented by a software module, a hardware module, or a combination of a software module and a hardware module.

[0086] In the embodiment of the present application, the core network device 200 refers to a device in the core network (CN) that provides service support for the terminal device 120. At present, some examples of core network devices are: access and mobility management function (AMF) entity, session management function (SMF) entity, user plane function (UPF) entity, etc., which are not listed here one by one. Among them, the AMF entity can be responsible for access management and mobility management of terminal devices; the SMF entity can be responsible for session management, such as user session establishment, etc.; the UPF entity can be a functional entity of the user plane, mainly responsible for connecting to the external network. It should be noted that the entities in this application can also be referred to as network elements or functional entities. For example, the AMF entity can also be referred to as an AMF network element or an AMF functional entity. For another example, the SMF entity can also be referred to as an SMF network element or an SMF functional entity, etc.

[0087] In the embodiments of the present application, the communication device used to implement the functions of the terminal device can be the terminal device, or it can be a device that can support the terminal device to implement the functions, such as a chip system. The device can be installed in the terminal device or used in conjunction with the terminal device. In the present application, the chip system can be composed of a chip or include a chip and other discrete devices.

[0088] In the embodiments of the present application, the device for implementing the functions of the network device can be a network device; it can also be a device that can support the network device to implement the functions, such as a chip system, a hardware circuit, a software module, or a hardware circuit and a software module. The device can be installed in the network device or used in conjunction with the network device. In the embodiments of the present application, only the device for implementing the functions of the network device is used as an example to illustrate, and does not constitute a limitation on the solutions of the embodiments of the present application.

[0089] It should be noted that the embodiments of the present application do not limit the scenarios in which the network device / terminal device is located. In addition, the network device / terminal device can be a hardware device, or a software function running on dedicated hardware, or a software function running on general-purpose hardware. For example, it can be an entity including dedicated or general-purpose hardware devices and software functions. The present application does not limit the specific form of the network device / terminal device.

[0090] AS-SRS is a method used by terminal devices in communication systems to perform channel estimation in conjunction with network equipment. In a communication system, base stations can transmit signals in a direction toward terminal devices. This requires the base station to detect the terminal device's location information and the channel quality between the base station and the terminal device. This allows the base station to more accurately allocate resources to each terminal device in the communication system. Sending SRS resources from terminal devices is one of the key ways the base station detects the terminal device's location and channel quality.

[0091] The terminal device sends each pre-configured SRS resource in turn through the designated antenna port on the time-frequency-space resources indicated by the network device, so that the network device performs channel estimation based on the received SRS resources and the related communication parameters they carry, calculates and matches the downlink precoding matrix suitable for the current channel conditions, and utilizes the channel reciprocity characteristics under TDD to equivalently use the precoding matrix for downlink transmission.

[0092] In this process, the more antenna ports involved in transmitting SRS resources, the more accurate the network device's channel estimation. Typically, terminal devices are equipped with multiple transmit and receive antennas, that is, multiple antenna ports for communication. Based on this structure, terminal devices can transmit SRS resources through multiple antenna ports to report corresponding channel information, thereby enabling network devices to obtain more comprehensive channel information, perform more accurate channel estimation, and achieve more accurate data transmission.

[0093] The terminal device can be configured with multiple AS-SRS modes (or methods, capabilities, formats, etc.), such as 1t (transmitter) 2r (receiver), 1t4r, 2t4r, etc., or t1r2, t1r4, t2r4, etc. In the embodiment of the present application, the AS-SRS mode is described using the form of numbers in front and letters in the back as an example.

[0094] It should be understood that when the terminal device is configured with more than four receiving antennas, the possible AS-SRS modes will be further expanded. For example, the above three AS-SRS mode examples are introduced below.

[0095] Figure 2 is a schematic diagram of an AS-SRS mode supported by a terminal device. It should be understood that the schematic diagram shown in Figure 2 is only an example and does not limit the number of antenna ports and the specific position of each port in the port array.

[0096] 1t2r means that during the antenna rotation process, the terminal device transmits SRS resources through two antenna ports in turn, and only one antenna port is selected to transmit SRS resources at a time, that is, one SRS resource is sent by one antenna port;

[0097] 1t4r means that during the antenna rotation process, the terminal device transmits SRS resources through four antenna ports in turn, and only one antenna is selected to transmit SRS resources at a time, that is, one SRS resource is sent by one antenna port;

[0098] 2t4r means that during the antenna rotation process, the terminal device transmits SRS resources through four antenna ports in turn, and only selects two antennas to send SRS resources at a time, that is, one SRS resource is sent by two antenna ports.

[0099] Taking 1t4r as an example, in the antenna rotation transmission, the time period during which the four antenna ports of the terminal device transmit the corresponding SRS resources in turn can be defined as 1 measurement cycle.

[0100] Assuming that the network device (for example, the base station mentioned above) has 64 receiving channels, when the terminal device reports the 1t4r capability, it means that the terminal device supports sending SRS resources four times in a single measurement cycle. After receiving four SRS resources sent by the terminal device each time, the network device can estimate a channel matrix with a dimension of 1×64. This channel matrix is ​​used to indicate the quality of the corresponding channel used to transmit the SRS resources. When the terminal device reports the 2T4R capability, it means that the terminal device supports sending SRS resources twice in a single measurement cycle. After receiving the corresponding two SRS resources sent by the terminal device each time, the network device can estimate a channel matrix with a dimension of 2×64. It can be seen that the network device can obtain a 4×64 channel matrix in each measurement cycle used by the terminal device to send SRS resources.

[0101] After determining the AS-SRS capability reported by the terminal device, the network device can configure all parameters required for sending and receiving AS-SRS resource sets for the terminal device through corresponding signaling, including time-frequency resource location, power control parameters, etc.

[0102] The terminal device also needs to calculate the transmission power of each SRS resource in the SRS resource set previously configured by the transmitting network device according to the following formula (1).

[0103] Among them, PO_SRS M is the starting power configured by the network device for the terminal device to send the SRS resource set; SRS Related to the frequency domain resource length occupied by the AS-SRS at the current moment; PL is the path loss of the wireless channel between the terminal and the base station, measured or estimated by the terminal using reference signals sent by network equipment, such as the synchronization signal block (SSB) or the downlink channel state information-reference signal (CSI-RS). Pcmax is the maximum transmit power that the terminal device can currently generate, a power value determined by the terminal device based on its hardware capabilities within the range permitted by the protocol.

[0104] Taking into account the hardware design of the terminal device antenna, taking 1t4r as an example, among the four antenna ports, one antenna port corresponds to the main RF chain, while the other antenna ports correspond to branch RF chains. Compared with the process of sending the first SRS resource in the AS-SRS resource set through the main RF chain, the process of sending the second SRS resource, the third SRS resource, or the fourth SRS resource in the AS-SRS resource set through some branch RF chains requires a longer transmission line and requires switching more intermediate devices, thereby introducing more insertion loss. Therefore, the protocol stipulates that the transmit power of the terminal device when sending the second SRS resource, the third SRS resource, or the fourth SRS resource can be lower than the lower limit of the transmit power Pcmax when sending the first SRS resource.

[0105] In the embodiments of this application, insertion loss or power insertion loss refers to the power lost during the transmission of an RF signal with an initial power of P from the RF link to the physical antenna port. In specific engineering implementations, the RF link may be composed of different RF components, resulting in different total insertion losses for different RF links.

[0106] It should be understood that there is a mapping relationship between the physical antenna port of the terminal device and the logical port corresponding to the wireless link. For example, the first logical port of the first SRS resource used by the terminal device for sending corresponds to the first physical antenna port in the physical antenna of the terminal device in a specific scenario. However, in another specific scenario, the first logical port of the first SRS resource used by the terminal device for sending may correspond to the second physical antenna port in the physical antenna of the terminal device. Among them, the logical port is also called the SRS port, which can be understood as a time-frequency-space resource for sending SRS resources that has a corresponding relationship with the antenna.

[0107] Based on the above description, it can be seen that, assuming that the network device (for example, the base station mentioned above) has 64 receiving channels, when the terminal device reports the 1t4r capability and the network device has configured the AS-SRS resource set adapted to the 1t4r capability for the terminal device (the AS-SRS resource set includes the first SRS resource, the second SRS resource, the third SRS resource, and the fourth SRS resource), each time the network device receives the SRS resources of the corresponding part of the SRS resource set sent by the terminal device, it can estimate a channel matrix with a dimension of 1×64. Considering that the insertion loss values ​​of different ports used to send different SRS resources on the terminal device side are different, that is, there are relative insertion loss values ​​with respect to the transmission power between different ports, the relative insertion loss value refers to the difference between the insertion loss values ​​in the transmission power used by different ports of the terminal device when sending SRS resources. The 4×64 channel matrix actually obtained by the network device in each measurement cycle can be expressed by the following formula (2).

[0108] Among them, H 4×64 is a 4×64 channel matrix, H1 1×64 H2 is the 1×64 channel matrix corresponding to the channel used to transmit the first SRS resource, 1×64 H3 is the 1×64 channel matrix corresponding to the channel used to transmit the second SRS resource, 1×64 H4 is the 1×64 channel matrix corresponding to the channel used to transmit the third SRS resource, 1×64 is the 1×64 channel matrix corresponding to the channel used to transmit the fourth SRS resource, α2, α3 and α4 are different amplitude attenuation factors, and Noise is the channel noise; the introduction of the amplitude attenuation factor is due to the existence of the above relative insertion loss value, so H2 1×64 、H3 1×64 and H4 1×64 They need to be multiplied by the corresponding amplitude attenuation factors α2, α3 or α4 respectively.

[0109] It should be understood that although formula (2) includes amplitude attenuation factors α2, α3, and α4, the network device cannot perceive the amplitude attenuation factors α2, α3, and α4 during the channel estimation process. The network device will think that the current estimated H 4×64 is accurate, but in fact, when α2, α3 and α4 are not equal to 1, the estimation result is not accurate.

[0110] Based on the above formula (2), it can be seen that as the number of branches used to transmit SRS resources increases and the relative insertion loss value increases, the network device does not take the above relative insertion loss value into account during the channel estimation process. Therefore, the accuracy of the channel estimation for transmitting SRS resources by the network device will be more affected, thereby affecting the overall network throughput of the communication system.

[0111] However, the currently proposed communication protocols do not provide corresponding regulations on how network devices can accurately obtain the above relative insertion loss values. Therefore, the channel estimation of network devices in the AS-SRS scenario may have large errors.

[0112] If the network device can obtain the above relative insertion loss value, it can further calculate the amplitude attenuation factors α2, α3, and α4. In this case, the network device can compensate for the estimation results during the channel estimation process, thereby improving the channel estimation accuracy. The compensated 4×64 channel matrix obtained by the network device in each measurement cycle can be expressed by the following formula (3).

[0113] In view of this, an embodiment of the present application proposes a communication method, in which the terminal device can report to the network device the relative insertion loss value between the power when sending the first SRS resource in the AS-SRS resource set and the power of other SRS resources during the AS-SRS process, so that the network device can perform a certain degree of error compensation on the channel estimation result based on the relative insertion loss value during the channel estimation based on the AS-SRS resource set, so as to improve the accuracy of the channel estimation of the network device.

[0114] FIG3 is a flow chart of a communication method 300 proposed in an embodiment of the present application.

[0115] The method 300 may be executed by the network device and the terminal device in the communication system shown in FIG. 1 . The method 300 includes the following steps.

[0116] S310: The network device sends first indication information to the terminal device, wherein the first indication information is used to configure a first resource set, the first resource set being a sounding reference signal (AS-SRS) resource set for antenna rotation transmission, and the first resource set including multiple sounding reference signal (SRS) resources.

[0117] In some possible embodiments, the first indication information may include a first transmission mode, which can be understood as one of the aforementioned terminal device AS-SRS modes, such as 1t2r, 1t4r, or 2t4r. In addition, the specific form of the first transmission mode is adapted to the number of SRS resources included in the first resource set. For example, when the terminal device AS-SRS mode is 1t4r, the first resource set includes a first SRS resource, a second SRS resource, a third SRS resource, and a fourth SRS resource, and each SRS resource is transmitted by a different antenna port of the terminal device. It can be seen that the first transmission mode is used to indicate the number of first ports for transmitting the first resource set in rotation and the number of second ports for transmitting each resource in the first resource set. For example, in the 1t4r mode, the number of first ports is 4 and the number of second ports is 1; in the 2t4r mode, the number of first ports is 4 and the number of second ports is 2, and so on.

[0118] It should be understood that since the first indication information instructs the terminal device to perform antenna rotation transmission in the first resource set including multiple SRS resources, it means that the number of first ports is greater than the number of second ports.

[0119] In some possible embodiments, before S310, the following operations may also be performed: the terminal device sends a first signaling to the network device, where the first signaling is used to indicate the AS-SRS mode set supported by the terminal device; the network device determines the above-mentioned first indication information based on the first signaling, and then sends the above-mentioned first indication information to the terminal device.

[0120] In some possible embodiments, the first indication information may include a configuration field and an indication field, wherein the configuration field is used to configure the above-mentioned first resource set, and the indication field is used to indicate the above-mentioned first sending mode.

[0121] S320: The network device sends second indication information to the terminal device. The second indication information is used to instruct the terminal device to send first power information, where the first power information includes a first difference value, which is a difference between a first power value and a second power value, where the first power value is used to indicate the power of the first SRS resource in the first resource set sent by the terminal device, and the second power value is used to indicate the power of the second SRS resource in the first resource set sent by the terminal device.

[0122] In some possible embodiments, the first indication information and / or the second indication information may be sent by the network device to the terminal device only when performing RRC initial configuration or reconfiguration involving changing the AS-SRS mode of the terminal device. The first indication information and / or the second indication information may also be part of the RRC signaling sent by the network device to the terminal device.

[0123] It should be noted that the above-mentioned first power information including the first difference is only an example. Of course, when the AS-SRS mode of the terminal device is 1t4r, the first power information may also include a second difference and a third difference, wherein the second difference is the difference between the third power value and the first power value, and the third power value is used to indicate that the terminal device sends the power of the third SRS resource in the first resource set, and the third difference is the difference between the fourth power value and the first power value, and the fourth power value is used to indicate that the terminal device sends the power of the fourth SRS resource in the first resource set. The embodiment of the present application does not limit the number of differences included in the first power information, which depends on the AS-SRS mode adopted by the terminal device.

[0124] In some possible embodiments, the first power information may further include the first power value, and may even include a second power value, a third power value, and the like.

[0125] It should be understood that the first difference value can also be understood as the relative insertion loss value mentioned in the above embodiment. For example, the first difference value can also be replaced by other words that can express the same meaning, such as the first power difference value, the first insertion loss value, the first power difference, etc., which are not limited in this embodiment of the application.

[0126] Typically, the first SRS resource is sent through the main RF chain of the terminal device, and other SRS resources in the first resource set are sent through the branch RF chain of the terminal device. Compared with the main RF chain, the branch RF chain uses longer routing and switches more devices, so the actual power of the terminal device in sending other SRS resources is lower than the actual power of sending the first SRS resource.

[0127] S330: The terminal device sends first power information to the network device.

[0128] In some possible embodiments, after the terminal device receives the second indication information, it determines the actual power of each antenna port when sending its corresponding SRS resource, and subtracts the transmission power (including the above-mentioned second power value) of the antenna port used to send other SRS resources in the first resource set except the first SRS resource from the transmission power (for example, the above-mentioned first power value) of the antenna port used to send the first SRS resource to determine at least one difference (including the above-mentioned first difference). Of course, the minuend and the subtrahend in the above-mentioned difference operation can also be swapped: the transmission power (for example, the above-mentioned first power value) of the antenna port used to send the first SRS resource is subtracted from the transmission power (including the above-mentioned second power value) of the antenna port used to send other SRS resources in the first resource set except the first SRS resource to determine at least one difference (including the above-mentioned first difference). It can be seen that the embodiments of the present application do not limit the signs of these differences.

[0129] For example, when the first sending mode is used to indicate 2t4r, the first resource set includes a first SRS resource and a second SRS resource, then the first difference included in the first power information can be, for example, 3dB or other measured values, and the 3dB can be associated with the above-mentioned second SRS resource.

[0130] In some possible embodiments, the terminal device may determine the first power value using the formula (1) mentioned in the above description.

[0131] It should be understood that the terminal device sends the first SRS resource through the main RF link, so the path loss generated by the terminal device sending the SRS resource to the target node through the main RF link is minimal, and before sending the first resource set, the terminal device can determine the antenna port corresponding to the main RF link, and then send the first SRS resource in the first SRS resource through the antenna port. When the network device configures the terminal device to send each SRS resource through N antenna ports, N is greater than 1, then the terminal device can also determine that among all the M ports used to send the first resource set, M is greater than N, and the path loss generated by sending the SRS resource to the target node is relatively small. In other words, the path loss generated by any one of the N ports in the process of sending the SRS resource is less than the path loss generated by any one of the remaining (MN) ports in the process of sending the SRS resource.

[0132] In some possible embodiments, taking into account the situation of 2t4r, which sends one SRS resource through multiple antenna ports, that is, the number of ports used by the terminal device to send each SRS resource in the first resource set is greater than 1, the first power value includes the first port power corresponding to the first port used to send the first SRS resource, and the second port power corresponding to the second port used to send the first SRS resource. The second power value includes the third port power corresponding to the third port used to send the second SRS resource, and the fourth port power corresponding to the fourth port used to send the second SRS resource. The first difference includes the difference between the first port power and the third port power, and the difference between the second port power and the fourth port power. Based on this, the terminal device can provide the above-mentioned first power information to the network device with finer granularity, which helps the network device to perform more accurate channel estimation.

[0133] For example, when the terminal device adopts the 2t4r mode, the first resource set includes a first SRS resource and a second SRS resource, wherein the first SRS resource is sent by port 1 and port 2 of the terminal device, and the second SRS resource is sent by port 3 and port 4 of the terminal device. Then the first difference can be determined as follows:

[0134] The transmit power corresponding to port 1 is recorded as P1, the transmit power corresponding to port 2 is recorded as P2, the transmit power corresponding to port 3 is recorded as P3, and the transmit power corresponding to port 4 is recorded as P4. The first difference includes two parts, which are recorded as ΔT1 and ΔT2 respectively. In the actual calculation process, ΔT1 can be determined by the following formula (4):

[0135] △T1=P3-P1 (4)

[0136] △T2 can be determined by the following formula (5):

[0137] △T2=P4-P2 (5)

[0138] Assume that the first differences calculated are 2dB and 3dB (in actual application, the first differences may also include other value groups), wherein 2dB is associated with port 3 for sending the second SRS resource, and 3dB is associated with port 4 for sending the second SRS resource.

[0139] S340: The terminal device sends an SRS to the network device through multiple SRS resources in the first resource set according to the first power information.

[0140] It should be understood that after the terminal device determines the transmission power corresponding to each SRS resource in the first resource set, the antenna port used to send the SRS resource needs to send the SRS to the network device through the corresponding SRS resource according to the transmission power. For example, the difference between the actual second power value when the terminal device sends the second SRS resource and the actual first power value when the terminal device sends the first SRS resource is equal to the first difference determined in S330.

[0141] S350: The network device performs channel estimation according to the first power information and the first resource set.

[0142] It should be understood that before performing channel estimation, the network device receives each SRS resource in the first resource set from the terminal device. Then, when performing channel estimation, the network device combines each SRS resource in the first resource set received, the SRS sent via each SRS resource, and the first power information to estimate the channel.

[0143] It should be understood that in the above method 300, the terminal device adopts a semi-static reporting mechanism.

[0144] Based on the above technical solution, during the process of transmitting multiple SRS resources in the first resource set in antenna rotation, the terminal device can report to the network device the relative insertion loss value (represented by the first difference) between the power when sending the first SRS resource in the first resource set and the power of other SRS resources, so that the network device can perform a certain degree of error compensation on the channel estimation result based on the relative insertion loss value during the process of channel estimation based on the AS-SRS resource set, so as to improve the accuracy of the channel estimation of the network device. In addition, the process of reporting the first power information by the terminal device in this solution is simple, and the process is only triggered when the network device is performing RRC initial configuration or reconfiguration involving changing the AS-SRS mode of the terminal device. The terminal device does not need to report multiple times, saving the signaling overhead of the communication system.

[0145] The embodiment of the present application proposes another communication method. Based on this method, the terminal device can actively report the first power information to the network device at an appropriate time.

[0146] FIG4 is a flow chart of a communication method 400 proposed in an embodiment of the present application.

[0147] The method 400 may be executed by the network device and the terminal device in the communication system shown in FIG. 1 . The method 400 includes the following steps.

[0148] S410: The network device sends first indication information to the terminal device, wherein the first indication information is used to configure a first resource set, the first resource set being a sounding reference signal (AS-SRS) resource set for antenna rotation transmission, and the first resource set including multiple sounding reference signal (SRS) resources.

[0149] It should be understood that S410 is the same as S310, so for details about the extended embodiment of S410, please refer to the relevant description of the corresponding embodiment of S310 above, which will not be repeated here.

[0150] S420: When the first trigger condition is met, first power information is sent to the network device, and the first trigger condition includes: each power in the first power set is equal to the maximum output power configured by the terminal device, and the first power set includes the power of each SRS resource in the first resource set sent by the terminal device, and the first power information includes a first difference, which is the difference between the first power value and the second power value. The first power value is used to indicate the power of the first SRS resource in the first resource set sent by the terminal device, and the second power value is used to indicate the power of the second SRS resource in the first resource set sent by the terminal device.

[0151] In some possible embodiments, before performing SRS resource rotation, the terminal device needs to determine the first power set according to the aforementioned formula (1), and then determine the first power information according to the first power set.

[0152] It should be understood that each transmit power in the above-mentioned first power set is the transmit power of the terminal device when transmitting each SRS resource in the first resource set during each measurement period. During each measurement period, the terminal device's antenna needs to complete a round of SRS resource transmission in the first resource set. The measurement period can be configured for the terminal device by the network device or set by the terminal device itself.

[0153] It should be understood that the first power information in method 400 can refer to the relevant description of the first power information in method 300. For the extended embodiment of the first power information, please refer to the relevant description of the aforementioned embodiment, which will not be repeated here.

[0154] In some possible embodiments, the trigger condition in S420 above, "each power in the first power set is equal to the maximum output power configured for the terminal device," is a condition that must be met when the terminal device triggers reporting of the first power information. On this basis, the first trigger condition can also be expanded. For ease of description, in this embodiment of the application, the trigger condition in S420, "each power in the first power set is equal to the maximum output power configured for the terminal device," is referred to as Condition 1.

[0155] In some possible embodiments, before S440, the network device may further send first configuration information to the terminal device. The first configuration information is used to configure the expected power of the terminal device for transmitting the first resource set. Referring to formula (1), the expected power is the transmission power configured by the network device for the terminal device in the aforementioned embodiment to cover the path loss generated during the transmission of the SRS resource:

[0156] P O_SRS,b,f,c (q s )+10log 10 (2 μ ·M SRS,b,f,c (i)+α SRS,b,f,c (q s )·PL b,f,c (q d )+h b,f,c (i,l))

[0157] Based on this, the meaning of the above condition 1 can be equivalent to the following description: at least one power value in the first power set is not equal to the above expected power.

[0158] S430: The terminal device sends an SRS to the network device through multiple SRS resources in the first resource set according to the first power information.

[0159] S440: The network device performs channel estimation according to the first power information and the first resource set.

[0160] Based on the above technical solution, the terminal device can flexibly and actively send the first difference in the first power information to the network device, so that the network device can obtain the first power information in a timely manner, that is, obtain the actual transmission power of the terminal device when sending each SRS resource within one measurement cycle during the antenna rotation process, thereby compensating the channel estimation result to a certain extent. Moreover, by setting trigger conditions, the terminal device is constrained in determining the first power set and sending the first power information to the network device, so that the terminal device needs to meet certain trigger conditions before determining the first power set or sending the first power information to the network device, thereby effectively avoiding the terminal device from frequently sending the same first power information to the network device, saving the signaling overhead of the communication system, and ensuring that the terminal device can report the updated first power information to the network device at the appropriate time. In addition, the process of the terminal device reporting the first power information in this solution is simple, and the accuracy of the SRS-based channel estimation is improved without occupying too many uplink resources, thereby improving network performance.

[0161] In some possible embodiments, the above-mentioned first trigger condition may also include: the difference between the first difference and the second difference is greater than a first threshold value, wherein the second difference is the difference between the first power value and the second power value in the first power information previously sent by the terminal device to the network device, and the first threshold value is greater than or equal to 0.

[0162] In some possible embodiments, the first threshold value may be sent by the network device to the terminal device, or may be preconfigured by the terminal device. For ease of description, the condition included in the first trigger condition in this embodiment is referred to as condition 2.

[0163] Based on the above embodiment, it can be seen that after reporting the first power information, the terminal device will retain the reported first power information, or retain the reported first power information for a first time period, where the first time period is a time period preconfigured by the terminal device or a time period configured for the terminal device by the network device. After determining the above first difference, if the above second difference can be obtained, the terminal device will calculate the difference between the first difference and the second difference, and then determine whether condition 2 of the above first trigger condition is met.

[0164] In some possible embodiments, the above-mentioned first trigger condition may further include: the MPR, A-MPR, or P-MPR corresponding to each power in the first power set is the same, and the MPR, A-MPR, or P-MPR is used to configure the maximum output power of the terminal device. In other words, if there is at least one MPR, A-MPR, or P-MPR corresponding to a power in the first power combination that is different from the MPR, A-MPR, or P-MPR corresponding to other powers, the terminal device can cancel the reporting of the first power information. For the convenience of description, this condition included in the first trigger condition in this embodiment is referred to as condition 3.

[0165] In some possible embodiments, before determining whether the above-mentioned condition 2 and / or condition 3 are satisfied, the terminal device needs to determine whether condition 1 is satisfied. When condition 1 is satisfied, the terminal device then determines whether condition 2 and / or condition 3 are satisfied. If none of the above-mentioned condition 1 is satisfied, there is no need to determine whether the above-mentioned condition 2 and / or condition 3 are satisfied. Even if both conditions 2 and / or 3 are satisfied, but condition 1 is not satisfied, the terminal device cannot be triggered to report the first power information.

[0166] In some possible embodiments, the above-mentioned first trigger condition may also include: the physical antenna port used for transmitting the first SRS resource in the first resource set in rotation changes after the terminal device sends the first power information last time.

[0167] It should be understood that the terminal device is able to monitor the reference symbol received power (RSRP) of each antenna, and then determine the mapping relationship between the physical antenna port and the logical port according to the principle of "optimal main path RSRP", where "optimal main path RSRP" means ensuring that the path loss of the wireless link corresponding to the logical port allocated to the antenna used to send the first SRS resource is minimized. Assume that when the terminal device reported the first power information last time, there was a mapping relationship between physical antenna port 1 and logical port 1, but due to a change in the communication state of the terminal device, such as signal blocking, logical port 1 is transformed into a mutual mapping with physical antenna port 2, which triggers the operation of the terminal device to report the first power information this time. The first power information reported by the terminal device last time is different from the content of the first power information to be reported this time. For the convenience of description, the condition included in the first trigger condition in this embodiment is referred to as condition 4.

[0168] In some possible embodiments, before determining whether the above-mentioned condition 2 and / or condition 3 are satisfied, the terminal device needs to determine whether condition 1 and condition 4 are satisfied. If condition 1 and condition 4 are satisfied, the terminal device then determines whether condition 2 and / or condition 3 are satisfied. Alternatively, before determining whether the above-mentioned condition 1 is satisfied, the terminal device needs to determine whether condition 4 is satisfied. If condition 4 is satisfied, the terminal device then determines whether condition 1 is satisfied.

[0169] In some possible embodiments, as the architecture of the communication system iterates, corresponding sub-conditions may continue to be added to the above-mentioned first trigger condition, thereby further expanding the first trigger condition.

[0170] Based on the above technical solution, by expanding the first trigger condition, the terminal device can make corresponding judgments on the combination of multiple conditions in the first trigger condition to determine whether to trigger the reporting of the first power information, so that the terminal device can report the first power information to the network device at a more appropriate time, further saving the signaling overhead of the communication system.

[0171] In addition, an embodiment of the present application also provides an apparatus for implementing any of the above methods. For example, a communication apparatus is provided, which includes a unit (or means) for implementing any of the above communication methods.

[0172] Figure 5 is a schematic block diagram of a communication device 500 provided in an embodiment of the present application. The communication device is applied to a terminal device and is used to implement the method 400 proposed in the above embodiment.

[0173] The apparatus 500 comprises:

[0174] A receiving unit 510 is configured to receive first indication information from a network device, where the first indication information is used to configure a first resource set, where the first resource set is a sounding reference signal (AS-SRS) resource set for antenna rotation transmission, and the first resource set includes multiple sounding reference signal (SRS) resources;

[0175] The first sending unit 520 is used to send first power information to the network device when a first trigger condition is met, and the first trigger condition includes: each power in the first power set is equal to the maximum output power configured by the terminal device, wherein the first power set includes the power of each SRS resource in the first resource set sent by the terminal device, and the first power information includes a first difference, which is the difference between the first power value and the second power value. The first power value is used to indicate the power of the first SRS resource in the first resource set sent by the terminal device, and the second power value is used to indicate the power of the second SRS resource in the first resource set sent by the terminal device.

[0176] In some possible embodiments, the number of ports of the above-mentioned terminal device used to send each SRS resource in the first resource set is greater than 1, the first power value includes a first port power corresponding to the first port used to send the first SRS resource, and a second port power corresponding to the second port used to send the first SRS resource, the second power value includes a third port power corresponding to the third port used to send the second SRS resource, and a fourth port power corresponding to the fourth port used to send the second SRS resource, and the first difference includes the difference between the first port power and the third port power, and the difference between the second port power and the fourth port power.

[0177] In some possible embodiments, the above-mentioned first trigger condition also includes: the difference between the first difference and the second difference is greater than the first threshold value, the second difference is the difference between the first power value and the second power value in the first power information previously sent by the terminal device to the network device, and the first threshold value is greater than or equal to 0.

[0178] In some possible embodiments, the receiving unit 510 is further configured to: receive a first threshold value from a network device.

[0179] In some possible embodiments, the above-mentioned first trigger condition also includes: the MPR, A-MPR or P-MPR corresponding to each power in the first power set are the same, wherein the MPR, A-MPR or P-MPR is used to configure the maximum output power of the terminal device.

[0180] In some possible embodiments, the above-mentioned first trigger condition also includes: the physical antenna port used for rotating transmission of the first SRS resource in the first resource set changes after the terminal device previously sent the first power information.

[0181] In some possible embodiments, the apparatus 500 further includes: a second sending unit 530, configured to send an SRS to the network device through a plurality of SRS resources in the first resource set according to the first power information.

[0182] In some possible embodiments, the functions of the first sending unit 520 and the second sending unit 530 may be integrated into one sending unit.

[0183] Figure 6 is a schematic block diagram of a communication device 600 provided in an embodiment of the present application. The communication device is applied to a network device and is used to implement the method 400 proposed in the above embodiment.

[0184] The apparatus 600 comprises:

[0185] A sending unit 610 is configured to send first indication information to a terminal device, where the first indication information is used to configure a first resource set, where the first resource set is a sounding reference signal (AS-SRS) resource set for antenna rotation transmission, and the first resource set includes multiple sounding reference signal (SRS) resources;

[0186] A receiving unit 620 is configured to receive first power information and a first resource set from a terminal device, wherein the first power information includes a first difference value, the first difference value being a difference between a first power value and a second power value, the first power value being used to indicate the power of the terminal device transmitting a first SRS resource in the first resource set, and the second power value being used to indicate the power of the terminal device transmitting a second SRS resource in the first resource set;

[0187] The processing unit 630 is configured to perform channel estimation according to the first power information and the first resource set.

[0188] In some possible embodiments, the number of ports of the terminal device used to send each SRS resource in the first resource set is greater than 1, the above-mentioned first power value includes a first port power corresponding to the first port used to send the first SRS resource, and a second port power corresponding to the second port used to send the first SRS resource, the second power value includes a third port power corresponding to the third port used to send the second SRS resource, and a fourth port power corresponding to the fourth port used to send the second SRS resource, and the first difference includes the difference between the first port power and the third port power, and the difference between the second port power and the fourth port power.

[0189] In some possible embodiments, the above-mentioned sending unit 610 is also used to: send a first threshold value to the terminal device, the first threshold value is greater than or equal to 0, the first threshold value is used to determine a first trigger condition, the first trigger condition is used to trigger the terminal device to send first power information to the network device, the first trigger condition includes: the difference between the first difference and the second difference is greater than the first threshold value, and the second difference is the difference between the first power value and the second power value in the first power information sent by the terminal device to the network device last time.

[0190] In some possible embodiments, the apparatus 500 may also be reused by the terminal device to perform the corresponding steps in the method 300. In this scenario, the receiving unit 510 in the apparatus 500 is configured to receive first indication information from the network device, where the first indication information is used to configure a first resource set, where the first resource set is a sounding reference signal AS-SRS resource set for antenna rotation transmission, and the first resource set includes multiple sounding reference signal SRS resources; the receiving unit 510 is further configured to receive second indication information from the network device, where the second indication information is used to instruct the terminal device to send first power information, where the first power information includes a first difference, where the first difference is the difference between the first power value and the second power value, where the first power value is used to indicate the power of the first SRS resource in the first resource set sent by the terminal device, and the second power value is used to indicate the power of the second SRS resource in the first resource set sent by the terminal device; and the first sending device 520 in the apparatus 500 is configured to send the first power information to the network device.

[0191] In some possible embodiments, the second sending unit in the apparatus 500 is configured to send the first power information to the network device.

[0192] Similarly, the above-mentioned apparatus 600 can also be reused by the network device to perform the corresponding steps in the above-mentioned method 300. In this scenario, the sending unit 610 in the apparatus 600 is used to send first indication information to the terminal device, where the first indication information is used to configure a first resource set, where the first resource set is a sounding reference signal AS-SRS resource set for antenna rotation transmission, and the first resource set includes multiple SRS resources; the sending unit 610 is also used to send second indication information to the terminal device, where the second indication information is used to instruct the terminal device to send first power information, where the first power information includes a first difference, where the first difference is the difference between the first power value and the second power value, where the first power value is used to indicate the power of the first SRS resource in the first resource set sent by the terminal device, and the second power value is used to indicate the power of the second SRS resource in the first resource set sent by the terminal device; the processing unit 620 in the above-mentioned apparatus is used to perform channel estimation based on the first power information and the first resource set.

[0193] In addition, based on the above-mentioned apparatus 500 and apparatus 600, an embodiment of the present application also proposes a communication system.

[0194] FIG7 is a schematic block diagram of a communication system 700 proposed in an embodiment of the present application.

[0195] The communication system 700 includes the above-mentioned apparatus 500 and apparatus 600 , wherein the apparatus 500 is mounted on at least one terminal device in the communication system 700 , and the apparatus 600 is mounted on at least one network device in the communication system 700 .

[0196] FIG8 is a schematic block diagram of a computer device 800 according to an embodiment of the present application. The computer device 800 shown in FIG8 includes a memory 810, a processor 820, and a bus 840. Optionally, the computer device 800 also includes a communication interface 830. The memory 810, processor 820, and communication interface 830 are interconnected via bus 840.

[0197] The memory 810 can be a read-only memory (ROM), a static storage device, a dynamic storage device, or a random access memory (RAM). The memory 810 can store programs. When the program stored in the memory 810 is executed by the processor 820, the processor 820 is used to perform the various steps of the VIO system initialization method of the embodiment of the present application. For example, the processor 820 can execute the method shown in Figure 3 or Figure 4 above.

[0198] The processor 820 can be a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), a graphics processing unit (GPU) or one or more integrated circuits to execute relevant programs to implement the communication method proposed in the method embodiment of the present application.

[0199] The processor 820 can also be an integrated circuit chip with signal processing capabilities. During the implementation process, the various steps of the VIO system initialization method of the present application can be completed through the hardware integrated logic circuit in the processor 820 or software instructions.

[0200] The processor 820 may also be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component. It may implement or execute the various methods, steps, and logic block diagrams disclosed in the embodiments of the present application. The general-purpose processor may be a microprocessor or any conventional processor. The steps of the methods involved in the embodiments of the present application may be directly implemented as being executed by a hardware decoding processor, or may be executed by a combination of hardware and software modules in the decoding processor. The software module may be located in a storage medium mature in the art, such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, or an electrically erasable programmable memory, a register, or the like. The storage medium is located in the memory 810, and the processor 820 reads the information in the memory 810 and, in combination with its hardware, performs the functions required to be performed by the units included in the apparatus shown in FIG. 5 or FIG. 6, or performs the method shown in FIG. 3 or FIG. 4 of the method embodiment of the present application.

[0201] The communication interface 830 uses a transceiver device such as, but not limited to, a transceiver to implement communication between the apparatus 800 and other devices or a communication network.

[0202] The bus 840 may include a path for transmitting information between the various components of the device 800 (eg, the memory 810 , the processor 820 , and the communication interface 830 ).

[0203] It should be understood that although the above-mentioned device 800 only shows a memory, a processor, and a communication interface, during the specific implementation process, those skilled in the art will understand that the device 800 may also include other components necessary for normal operation. At the same time, according to specific needs, those skilled in the art will understand that the device 800 may also include hardware components that implement other additional functions. In addition, those skilled in the art will understand that the device 800 may also include only the components necessary to implement the embodiments of the present application, and does not necessarily include all the components shown in Figure 8.

[0204] It should be understood that the processor in the embodiments of the present application may be a central processing unit (CPU), and the processor may also be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor, etc.

[0205] It should also be understood that the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of random access memory (RAM) are available, such as static RAM (SRAM), dynamic random access memory (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), and direct rambus RAM (DR RAM).

[0206] Figure 9 is a schematic block diagram of a computer-readable storage medium 900 provided in an embodiment of the present application. The computer-readable storage medium 900 shown in Figure 9 stores computer instructions 910. When the computer instructions 910 are executed by a processor, the method corresponding to the above embodiment can be implemented.

[0207] In some possible embodiments, the computer-readable storage medium 900 can be any available medium that can be accessed by a computer, or a data storage device such as a server or data center that includes a collection of one or more available media. The available medium can be a magnetic medium (e.g., a floppy disk, a hard disk, or a magnetic tape), an optical medium (e.g., a DVD), or a semiconductor medium. The semiconductor medium can be a solid-state drive.

[0208] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0209] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0210] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0211] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0212] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0213] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes a number of instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application.

[0214] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A communication method, characterized in that: Applied to a terminal device, the method includes: receiving first indication information from a network device, where the first indication information is used to configure a first resource set, where the first resource set is a sounding reference signal (AS-SRS) resource set for antenna rotation transmission, and the first resource set includes multiple sounding reference signal (SRS) resources; When a first trigger condition is met, first power information is sent to the network device, and the first trigger condition includes: each power in the first power set is equal to the maximum output power configured by the terminal device, the first power set includes the power of each SRS resource in the first resource set sent by the terminal device, and the first power information includes a first difference, which is the difference between the first power value and the second power value. The first power value is used to represent the power of the first SRS resource in the first resource set sent by the terminal device, and the second power value is used to represent the power of the second SRS resource in the first resource set sent by the terminal device.

2. The method according to claim 1, characterized in that The number of ports of the terminal device used to send each SRS resource in the first resource set is greater than 1, the first power value includes a first port power corresponding to the first port used to send the first SRS resource, and a second port power corresponding to the second port used to send the first SRS resource, the second power value includes a third port power corresponding to the third port used to send the second SRS resource, and a fourth port power corresponding to the fourth port used to send the second SRS resource, and the first difference includes a difference between the first port power and the third port power, and a difference between the second port power and the fourth port power.

3. The method according to claim 1 or 2, characterized in that The first trigger condition also includes: the difference between the first difference and the second difference is greater than a first threshold value, the second difference is the difference between the first power value and the second power value in the first power information sent by the terminal device to the network device last time, and the first threshold value is greater than or equal to 0.

4. The method according to claim 3, characterized in that The method further comprises: The first threshold value is received from the network device.

5. The method according to any one of claims 1 to 4, characterized in that The first trigger condition also includes: the maximum power fallback value MPR, additional-maximum power fallback value A-MPR or power management-maximum power fallback value P-MPR corresponding to each power in the first power set are the same, and the MPR, the A-MPR or the P-MPR is used to configure the maximum output power of the terminal device.

6. The method according to any one of claims 1 to 5, characterized in that The first trigger condition also includes: the physical antenna port used for rotating the first SRS resource in the first resource set changes after the terminal device previously sent the first power information.

7. The method according to any one of claims 1 to 6, characterized in that The method further comprises: According to the first power information, an SRS is sent to the network device through multiple SRS resources in the first resource set.

8. A communication method, characterized in that: Applied to a network device, the method includes: Sending first indication information to a terminal device, where the first indication information is used to configure a first resource set, where the first resource set is a sounding reference signal (AS-SRS) resource set for antenna rotation transmission, and the first resource set includes multiple sounding reference signal (SRS) resources; receiving first power information and the first resource set from the terminal device, the first power information including a first difference value, the first difference value being a difference between a first power value and a second power value, the first power value being used to indicate power of a first SRS resource in the first resource set transmitted by the terminal device, and the second power value being used to indicate power of a second SRS resource in the first resource set transmitted by the terminal device; Channel estimation is performed according to the first power information and the first resource set.

9. The method according to claim 8, characterized in that The number of ports of the terminal device used to send each SRS resource in the first resource set is greater than 1, the first power value includes a first port power corresponding to the first port used to send the first SRS resource, and a second port power corresponding to the second port used to send the first SRS resource, the second power value includes a third port power corresponding to the third port used to send the second SRS resource, and a fourth port power corresponding to the fourth port used to send the second SRS resource, and the first difference includes a difference between the first port power and the third port power, and a difference between the second port power and the fourth port power.

10. The method according to claim 8 or 9, characterized in that The method further comprises: A first threshold value is sent to the terminal device, the first threshold value is greater than or equal to 0, the first threshold value is used to determine a first trigger condition, the first trigger condition is used to trigger the terminal device to send the first power information to the network device, the first trigger condition includes: the difference between the first difference and the second difference is greater than the first threshold value, and the second difference is the difference between the first power value and the second power value in the first power information sent by the terminal device to the network device last time.

11. A communication method, characterized in that: Applied to a terminal device, the method includes: receiving first indication information from a network device, where the first indication information is used to configure a first resource set, where the first resource set is a sounding reference signal (AS-SRS) resource set for antenna rotation transmission, and the first resource set includes multiple sounding reference signal (SRS) resources; receiving second indication information from the network device, the second indication information being used to instruct the terminal device to send first power information, the first power information including a first difference value, the first difference value being a difference between a first power value and a second power value, the first power value being used to indicate power of the terminal device sending a first SRS resource in the first resource set, and the second power value being used to indicate power of the terminal device sending a second SRS resource in the first resource set; The first power information is sent to the network device.

12. The method according to claim 11, characterized in that The number of ports of the terminal device used to send each SRS resource in the first resource set is greater than 1, the first power value includes a first port power corresponding to the first port used to send the first SRS resource, and a second port power corresponding to the second port used to send the first SRS resource, the second power value includes a third port power corresponding to the third port used to send the second SRS resource, and a fourth port power corresponding to the fourth port used to send the second SRS resource, and the first difference includes a difference between the first port power and the third port power, and a difference between the second port power and the fourth port power.

13. The method according to claim 11 or 12, characterized in that The method further comprises: According to the first power information, an SRS is sent to the network device through multiple SRS resources in the first resource set.

14. A communication method, characterized in that: Applied to a network device, the method includes: Sending first indication information to a terminal device, where the first indication information is used to configure a first resource set, where the first resource set is a sounding reference signal (AS-SRS) resource set for antenna rotation transmission, and the first resource set includes multiple SRS resources; Sending second indication information to the terminal device, where the second indication information is used to instruct the terminal device to send first power information, where the first power information includes a first difference value, where the first difference value is a difference between a first power value and a second power value, where the first power value is used to indicate the power of the terminal device sending the first SRS resource in the first resource set, and the second power value is used to indicate the power of the terminal device sending the second SRS resource in the first resource set; Channel estimation is performed according to the first power information and the first resource set.

15. The method according to claim 14, characterized in that The number of ports of the terminal device used to send each SRS resource in the first resource set is greater than 1, the first power value includes a first port power corresponding to the first port used to send the first SRS resource, and a second port power corresponding to the second port used to send the first SRS resource, the second power value includes a third port power corresponding to the third port used to send the second SRS resource, and a fourth port power corresponding to the fourth port used to send the second SRS resource, and the first difference includes a difference between the first port power and the third port power, and a difference between the second port power and the fourth port power.

16. A communication device, characterized in that: Applied to a terminal device, the device includes: a receiving unit, configured to receive first indication information from a network device, where the first indication information is used to configure a first resource set, where the first resource set is a sounding reference signal (AS-SRS) resource set for antenna rotation transmission, and the first resource set includes multiple sounding reference signal (SRS) resources; A first sending unit is used to send first power information to the network device when a first trigger condition is met, the first trigger condition including: each power in the first power set is equal to the maximum output power configured by the terminal device, the first power set includes the power of each SRS resource in the first resource set sent by the terminal device, the first power information includes a first difference, the first difference is the difference between the first power value and the second power value, the first power value is used to indicate the power of the first SRS resource in the first resource set sent by the terminal device, and the second power value is used to indicate the power of the second SRS resource in the first resource set sent by the terminal device.

17. The device according to claim 16, characterized in that The number of ports of the terminal device used to send each SRS resource in the first resource set is greater than 1, the first power value includes a first port power corresponding to the first port used to send the first SRS resource, and a second port power corresponding to the second port used to send the first SRS resource, the second power value includes a third port power corresponding to the third port used to send the second SRS resource, and a fourth port power corresponding to the fourth port used to send the second SRS resource, and the first difference includes a difference between the first port power and the third port power, and a difference between the second port power and the fourth port power.

18. The device according to claim 16 or 17, characterized in that The first trigger condition also includes: the difference between the first difference and the second difference is greater than a first threshold value, the second difference is the difference between the first power value and the second power value in the first power information sent by the terminal device to the network device last time, and the first threshold value is greater than or equal to 0.

19. The device according to claim 18, characterized in that The receiving unit is further configured to: The first threshold value is received from the network device.

20. The device according to any one of claims 16 to 19, characterized in that The first trigger condition also includes: the maximum power fallback value MPR, additional-maximum power fallback value A-MPR or power management-maximum power fallback value P-MPR corresponding to each power in the first power set are the same, and the MPR, the A-MPR or the P-MPR is used to configure the maximum output power of the terminal device.

21. The device according to any one of claims 16 to 20, characterized in that The first trigger condition also includes: the physical antenna port used for rotating the first SRS resource in the first resource set changes after the terminal device previously sent the first power information.

22. The device according to any one of claims 16 to 21, characterized in that The device further comprises: The second sending unit is configured to send an SRS to the network device through a plurality of SRS resources in the first resource set according to the first power information.

23. A communication device, characterized in that: Applied to network equipment, the device includes: a sending unit, configured to send first indication information to a terminal device, where the first indication information is used to configure a first resource set, where the first resource set is a sounding reference signal (AS-SRS) resource set for antenna rotation transmission, and the first resource set includes multiple sounding reference signal (SRS) resources; a receiving unit, configured to receive first power information and the first resource set from the terminal device, the first power information including a first difference value, the first difference value being a difference between a first power value and a second power value, the first power value being used to indicate the power of the terminal device sending a first SRS resource in the first resource set, and the second power value being used to indicate the power of the terminal device sending a second SRS resource in the first resource set; A processing unit is configured to perform channel estimation based on the first power information and the first resource set.

24. The device according to claim 23, characterized in that The number of ports of the terminal device used to send each SRS resource in the first resource set is greater than 1, the first power value includes a first port power corresponding to the first port used to send the first SRS resource, and a second port power corresponding to the second port used to send the first SRS resource, the second power value includes a third port power corresponding to the third port used to send the second SRS resource, and a fourth port power corresponding to the fourth port used to send the second SRS resource, and the first difference includes a difference between the first port power and the third port power, and a difference between the second port power and the fourth port power.

25. The device according to claim 23 or 24, characterized in that The sending unit is further configured to: A first threshold value is sent to the terminal device, the first threshold value is greater than or equal to 0, the first threshold value is used to determine a first trigger condition, the first trigger condition is used to trigger the terminal device to send the first power information to the network device, the first trigger condition includes: the difference between the first difference and the second difference is greater than the first threshold value, and the second difference is the difference between the first power value and the second power value in the first power information sent by the terminal device to the network device last time.

26. A communication device, characterized in that: Applied to a terminal device, the device includes: a receiving unit, configured to receive first indication information from a network device, where the first indication information is used to configure a first resource set, where the first resource set is a sounding reference signal (AS-SRS) resource set for antenna rotation transmission, and the first resource set includes multiple sounding reference signal (SRS) resources; The receiving unit is further configured to receive second indication information from the network device, where the second indication information is used to instruct the terminal device to send first power information, where the first power information includes a first difference value, where the first difference value is a difference between a first power value and a second power value, where the first power value is used to indicate the power of the terminal device sending a first SRS resource in the first resource set, and the second power value is used to indicate the power of the terminal device sending a second SRS resource in the first resource set; A first sending unit is configured to send the first power information to the network device.

27. The device according to claim 26, characterized in that The number of ports of the terminal device used to send each SRS resource in the first resource set is greater than 1, the first power value includes a first port power corresponding to the first port used to send the first SRS resource, and a second port power corresponding to the second port used to send the first SRS resource, the second power value includes a third port power corresponding to the third port used to send the second SRS resource, and a fourth port power corresponding to the fourth port used to send the second SRS resource, and the first difference includes a difference between the first port power and the third port power, and a difference between the second port power and the fourth port power.

28. The device according to claim 26 or 27, characterized in that The device further comprises: The second sending unit is configured to send an SRS to the network device through a plurality of SRS resources in the first resource set according to the first power information.

29. A communication device, characterized in that: Applied to network equipment, the device includes: A sending unit, configured to send first indication information to a terminal device, where the first indication information is used to configure a first resource set, where the first resource set is a sounding reference signal AS-SRS resource set for antenna rotation transmission, and the first resource set includes multiple SRS resources; The sending unit is further configured to send second indication information to the terminal device, where the second indication information is used to instruct the terminal device to send first power information, where the first power information includes a first difference value, where the first difference value is a difference between a first power value and a second power value, where the first power value is used to indicate the power of the terminal device sending the first SRS resource in the first resource set, and the second power value is used to indicate the power of the terminal device sending the second SRS resource in the first resource set; A processing unit is configured to perform channel estimation based on the first power information and the first resource set.

30. The device according to claim 29, characterized in that The number of ports of the terminal device used to send each SRS resource in the first resource set is greater than 1, the first power value includes a first port power corresponding to the first port used to send the first SRS resource, and a second port power corresponding to the second port used to send the first SRS resource, the second power value includes a third port power corresponding to the third port used to send the second SRS resource, and a fourth port power corresponding to the fourth port used to send the second SRS resource, and the first difference includes a difference between the first port power and the third port power, and a difference between the second port power and the fourth port power.

31. A communication device, characterized in that: The method comprises a processor and a memory, wherein the processor and the memory are connected, wherein the memory is used to store program code, and the processor is used to call the program code to execute the method according to any one of claims 1 to 7, or the method according to any one of claims 8 to 10, or the method according to any one of claims 11 to 13, or the method according to claim 14 or 15.

32. A communication system, characterized in that: It includes a terminal device and a network device, the terminal device includes the communication device according to any one of claims 16 to 22, the network device includes the communication device according to any one of claims 23 to 25, or the terminal device includes the communication device according to any one of claims 26 to 28, and the network device includes the communication device according to claim 29 or 30.

33. A chip system, characterized in that: The chip system is applied to an electronic device; the chip system includes one or more interface circuits and one or more processors; the interface circuit and the processor are interconnected by lines; the interface circuit is used to receive signals from the memory of the electronic device and send signals to the processor, and the signals include computer instructions stored in the memory; when the processor executes the computer instructions, the electronic device executes the method as described in any one of claims 1 to 7, or the method as described in any one of claims 8 to 10, or the method as described in any one of claims 11 to 13, or the method as described in claim 14 or 15.

34. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a computer program, which is executed by a processor to implement the method according to any one of claims 1 to 7, or the method according to any one of claims 8 to 10, or the method according to any one of claims 11 to 13, or the method according to claim 14 or 15.

35. A computer program product, characterized in that Contains instructions (or programs) that, when executed by a processor, cause the method of any one of claims 1 to 7 to be executed, or the method of any one of claims 8 to 10 to be executed, or the method of any one of claims 11 to 13 to be executed, or the method of claim 14 or 15 to be executed.

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