Communication method, apparatus and device, and chip, storage medium and program product

Abstract

Provided in the present application are a communication method, apparatus and device, and a chip, a storage medium and a program product. The method comprises: sending P SRS resources on the basis of sounding reference signal (SRS) configuration information and power scaling information, wherein the power scaling information comprises P power scaling factors; the P power scaling factors correspond to the P SRS resources on a one-to-one basis; the P SRS resources are SRS resources indicated by the SRS configuration information and used for antenna switching; the P power scaling factors are used for ensuring that the sending powers of SRS ports corresponding to different SRS resources among the P SRS resources are the same; and P is a positive integer greater than or equal to 1. The present application can improve the accuracy of acquiring downlink channel information.

Description

Communication method and device, equipment, chip, storage medium, program product Technical Field

[0001] The embodiments of the present application relate to the field of communication technology, and specifically to a communication method and apparatus, equipment, chip, storage medium, and program product. Background Art

[0002] In fifth-generation (5G) mobile communication systems, terminal devices support antenna switching transmission modes for Sounding Reference Signal (SRS), including 1T2R (1 transmit antenna, 2 receive antennas), 2T4R (2 transmit antennas, 4 receive antennas), 1T4R (1 transmit antenna, 4 receive antennas), or T=R (the number of transmit antennas equals the number of receive antennas). Depending on the SRS transmission period, SRS transmission can be divided into three transmission modes: periodic, semi-continuous, and aperiodic. SRS antenna switching transmission is suitable for scenarios with reciprocity between uplink and downlink, and is used by network devices to obtain downlink channel information.

[0003] Currently, for 3-port (3 transmit antennas) antenna switching, such as 3T8R (3 transmit antennas, 8 receive antennas) and 3T4R (3 transmit antennas, 4 receive antennas), the power of the transmit antennas used as SRS resources for antenna switching may be different, resulting in low accuracy in obtaining downlink channel information.

[0004] Summary of the Invention

[0005] Embodiments of the present application provide a communication method and apparatus, device, chip, storage medium, and program product, which can improve the accuracy of acquiring downlink channel information.

[0006] The technical solution of this application is achieved as follows:

[0007] In a first aspect, an embodiment of the present application provides a communication method, applied to a terminal, the method comprising:

[0008] According to the sounding reference signal SRS configuration information and power scaling information, P SRS resources are sent; wherein the power scaling information includes P power scaling factors; the P power scaling factors correspond one-to-one to the P SRS resources; the P SRS resources are SRS resources for antenna switching indicated by the SRS configuration information; the P power scaling factors are used to ensure that the transmission power of the SRS ports corresponding to different SRS resources among the P SRS resources is the same; P is a positive integer greater than or equal to 1.

[0009] In a second aspect, an embodiment of the present application provides a communication method, applied to a network device, the method comprising:

[0010] Receive P sounding reference signal SRS resources; wherein the P SRS resources are related to SRS configuration information and power scaling information; the power scaling information includes P power scaling factors; the P power scaling factors correspond one-to-one to the P SRS resources; the P SRS resources are SRS resources for antenna switching indicated by the SRS configuration information; the P power scaling factors are used to ensure that the transmission power of SRS ports corresponding to different SRS resources among the P SRS resources is the same; P is a positive integer greater than or equal to 1.

[0011] In a third aspect, an embodiment of the present application provides a communication device, the device comprising:

[0012] The first sending unit is configured to send P SRS resources according to the sounding reference signal SRS configuration information and power scaling information; wherein the power scaling information includes P power scaling factors; the P power scaling factors correspond one-to-one to the P SRS resources; the P SRS resources are SRS resources for antenna switching indicated by the SRS configuration information; the P power scaling factors are used to ensure that the transmission power of the SRS ports corresponding to different SRS resources among the P SRS resources is the same; P is a positive integer greater than or equal to 1.

[0013] In a fourth aspect, an embodiment of the present application provides a communication device, the device comprising:

[0014] The second receiving unit is configured to receive P sounding reference signal SRS resources; wherein the P SRS resources are related to SRS configuration information and power scaling information; the power scaling information includes P power scaling factors; the P power scaling factors correspond one-to-one to the P SRS resources; the P SRS resources are SRS resources for antenna switching indicated by the SRS configuration information; the P power scaling factors are used to ensure that the transmission power of SRS ports corresponding to different SRS resources among the P SRS resources is the same; P is a positive integer greater than or equal to 1.

[0015] In a fifth aspect, an embodiment of the present application provides a communication device, the communication device comprising:

[0016] memory for storing computer programs;

[0017] a processor, connected to the memory, configured to call and run the computer program from the memory to implement the method according to the first aspect, or to implement the method according to the second aspect;

[0018] A transceiver is used to send and receive information when sending and receiving information with other external devices.

[0019] In a sixth aspect, an embodiment of the present application provides a chip, comprising:

[0020] memory for storing computer programs;

[0021] a processor, connected to the memory, configured to call and run a computer program from the memory, so that a device equipped with the chip implements the method according to the first aspect, or implements the method according to the second aspect;

[0022] A transceiver is used to send and receive information between a device or chip.

[0023] In a seventh aspect, an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by at least one processor, it implements the method as described in the first aspect, or implements the method as described in the second aspect.

[0024] In an eighth aspect, an embodiment of the present application provides a computer program product, comprising computer program instructions, which, when executed by a processor, implement the method as described in the first aspect, or, when executed by a processor, implement the method as described in the second aspect.

[0025] The embodiments of the present application provide a communication method and apparatus, device, chip, storage medium, and program product. On the terminal side, the method includes: sending P SRS resources according to SRS configuration information and power scaling information; wherein the power scaling information includes P power scaling factors; the P power scaling factors correspond one-to-one to the P SRS resources; the P SRS resources are SRS resources for antenna switching indicated by the SRS configuration information; the P power scaling factors are used to ensure that the transmission power of the SRS ports corresponding to different SRS resources in the P SRS resources is the same; and P is a positive integer greater than or equal to 1. On the one hand, the P power scaling factors ensure the linear value of the transmission power of the SRS resources so that the actual values ​​of the transmission power of the transmitting antennas corresponding to different SRS resources in the P SRS resources are the same, so as to adapt to different communication scenarios and system optimization goals. This helps to more accurately estimate and measure the channel quality in the downlink, thereby improving the accuracy of downlink channel information acquisition. On the other hand, by using the SRS signal, the downlink channel quality can be measured on the uplink, and this information can be used to better configure and optimize the downlink. By adjusting the transmit power and configuration of SRS resources, the system can more precisely adapt to different channel conditions, thereby improving the accuracy of channel estimation. The use of power scaling factors enables the system to dynamically adjust the transmit power to adapt to different communication scenarios, further improving system performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings herein are incorporated into and constitute a part of this specification. These drawings illustrate embodiments consistent with the present application and, together with the specification, serve to illustrate the technical solutions of the present application. Obviously, the drawings described below are merely some embodiments of the present application. Those skilled in the art can, without inventive effort, derive other drawings from these drawings.

[0027] The flowcharts shown in the accompanying drawings are for illustrative purposes only and do not necessarily include all contents and operations / steps, nor must they be executed in the order described. For example, some operations / steps may be decomposed, while others may be combined or partially combined. Therefore, the actual execution order may vary depending on the actual situation.

[0028] FIG1 is a schematic diagram of an optional application scenario provided in an embodiment of the present application;

[0029] FIG2 is a schematic diagram of an optional SRS antenna switching provided in an embodiment of the present application;

[0030] FIG3 is a flow chart of an optional communication method according to an embodiment of the present application;

[0031] FIG4 is a second flow chart of an optional communication method provided in an embodiment of the present application;

[0032] FIG5a is a schematic diagram 1 of an optional port configuration of an SRS resource provided in an embodiment of the present application;

[0033] FIG5 b is a second schematic diagram of an optional port configuration of an SRS resource provided in an embodiment of the present application;

[0034] FIG5c is a third schematic diagram of an optional port configuration of an SRS resource provided in an embodiment of the present application;

[0035] FIG6a is a fourth schematic diagram of an optional port configuration of SRS resources provided in an embodiment of the present application;

[0036] FIG6 b is a fifth schematic diagram of an optional port configuration of an SRS resource provided in an embodiment of the present application;

[0037] FIG7a is a sixth schematic diagram of an optional port configuration of an SRS resource provided in an embodiment of the present application;

[0038] FIG7 b is a seventh schematic diagram of an optional port configuration of an SRS resource provided in an embodiment of the present application;

[0039] FIG8a is a schematic diagram eight of an optional port configuration of SRS resources provided in an embodiment of the present application;

[0040] FIG8 b is a ninth schematic diagram of an optional port configuration of an SRS resource provided in an embodiment of the present application;

[0041] FIG8c is a schematic diagram 10 of an optional port configuration of SRS resources provided in an embodiment of the present application;

[0042] FIG9 is a first schematic diagram of the structural composition of an optional communication device provided in an embodiment of the present application;

[0043] FIG10 is a second schematic diagram of the structural composition of an optional communication device provided in an embodiment of the present application;

[0044] FIG11 is a schematic diagram of the structural composition of an optional communication device provided in an embodiment of the present application;

[0045] FIG12 is a schematic diagram of the structure of an optional chip provided in an embodiment of the present application;

[0046] FIG13 is a schematic diagram of the structural composition of an optional communication system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0047] In order to enable a more detailed understanding of the features and technical contents of the embodiments of the present application, the implementation of the embodiments of the present application is described in detail below with reference to the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present application.

[0048] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application pertains. The terms used herein are for the purpose of describing the embodiments of this application only and are not intended to limit this application.

[0049] In the following description, reference is made to "some embodiments," which describe a subset of all possible embodiments. However, it is understood that "some embodiments" may be the same subset or different subsets of all possible embodiments, and may be combined with each other without conflict. It should also be noted that the terms "first, second, and third" in the embodiments of the present application are only used to distinguish similar objects and do not represent a specific ordering of the objects. It is understood that "first, second, and third" may be interchanged in a specific order or sequential order where permitted, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0050] FIG1 is a schematic diagram of an optional application scenario provided in an embodiment of the present application.

[0051] As shown in Figure 1, a communication system 100 may include a terminal device 110 (also referred to as a terminal) and a network device (NW) 120. The network device 120 may communicate with the terminal device 110 via an air interface. The terminal device 110 and the network device 120 support multi-service transmission.

[0052] It should be understood that the embodiments of the present application are only illustrative of the communication system 100, but the embodiments of the present application are not limited thereto. That is, the technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Long Term Evolution (LTE) system, LTE Time Division Duplex (TDD), Universal Mobile Telecommunication System (UMTS), Internet of Things (IoT) system, Narrow Band Internet of Things (NB-IoT) system, enhanced Machine-Type Communications (eMTC) system, 5G communication system (also known as New Radio (NR) communication system), or future communication systems.

[0053] In the communication system 100 shown in Figure 1, the network device 120 may be an access network device that communicates with the terminal device 110. The access network device may provide communication coverage for a specific geographical area and may communicate with the terminal device 110 located within the coverage area.

[0054] In some embodiments, the network device may be an evolved Node B (eNB or eNodeB) in a Long Term Evolution (LTE) system, or a Next Generation Radio Access Network (NG RAN) device, or a gNB in ​​an NR system, or a wireless controller in a Cloud Radio Access Network (CRAN), or the network device may be a macro base station, a micro base station (also known as a small station), a satellite, a Radio Network Controller (RNC), a Node B (NB), a Base Station Controller (BSC), a Base Transceiver Station (BTS), a home base station (e.g., Home Evolved NodeB, or Home Node B, HNB), a Baseband Unit (BBU), an Access Point (AP) in a Wireless Fidelity (WiFi) system, a wireless relay node, a wireless backhaul node, a Transmission Point (TP) or a Transmission and Reception Point (TRP), etc. The network device may also be a relay station, an access point, a vehicle-mounted device, a wearable device, a hub, a switch, a bridge, a router, or a network device in a future evolved public land mobile network (PLMN).

[0055] In some embodiments, the terminal device 110 may be any terminal device, including but not limited to a terminal device that is connected to the network device 120 or other terminal devices by wire or wireless.

[0056] In some embodiments, the terminal device 110 may refer to an access terminal, user equipment (UE), a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent, or a user device. The access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, an IoT device, a satellite handheld terminal, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a 5G network, or a terminal device in a future evolution network, etc.

[0057] In some embodiments, the terminal may be used for device-to-device (D2D) communication.

[0058] The terminal device 110 can be used for device-to-device (D2D) communication.

[0059] FIG1 exemplarily shows a network device and two terminal devices. Optionally, the communication system 100 may include multiple network devices and each network device may include another number of terminal devices within its coverage area, which is not limited in this embodiment of the present application.

[0060] It should be noted that FIG1 is only an example of a system to which this application is applicable. Of course, the method shown in the embodiment of this application can also be applied to other systems. In addition, the terms "system" and "network" are often used interchangeably in this application.

[0061] It should be noted that Figure 1 is merely an example of the system to which this application applies. Of course, the methods described in the embodiments of this application can also be applied to other systems. In addition, the terms "system" and "network" are often used interchangeably in this application. The term "and / or" in this application is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship. It should also be understood that the "indication" mentioned in the embodiments of this application can be a direct indication, an indirect indication, or an indication of an association relationship. For example, A indicating B can mean that A directly indicates B, for example, B can obtain it through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can obtain it through C; it can also mean that there is an association relationship between A and B. It should also be understood that the “correspondence” mentioned in the embodiments of the present application may indicate a direct or indirect correspondence between the two, or an association relationship between the two, or a relationship between indication and being indicated, configuration and being configured, etc. It should also be understood that the “predefined” or “predefined rules” mentioned in the embodiments of the present application can be implemented by pre-saving corresponding codes, tables or other methods that can be used to indicate relevant information in devices (for example, including terminal devices and network devices), and the present application does not limit its specific implementation method. For example, predefined can refer to what is defined in the protocol. It should also be understood that in the embodiments of the present application, the “protocol” may refer to a standard protocol in the field of communications, for example, it may include LTE protocols, NR protocols, and related protocols used in future communication systems, and the present application does not limit this.

[0062] It should be understood that the term "and / or" in this application is merely a description of the relationship between associated objects, indicating that three possible relationships exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects are in an "or" relationship.

[0063] It should also be understood that the "indication" mentioned in the embodiments of this application can be a direct indication, an indirect indication, or an indication of an association. For example, "A indicates B" can mean that A directly indicates B, for example, B can be obtained through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also mean that there is an association between A and B.

[0064] It should also be understood that the "correspondence" mentioned in the embodiments of the present application may indicate a direct or indirect correspondence between the two, or an association between the two, or a relationship between indication and being indicated, configuration and being configured, etc.

[0065] It should also be understood that the “predefined” or “predefined rules” mentioned in the embodiments of the present application can be implemented by pre-saving corresponding codes, tables or other methods that can be used to indicate relevant information in devices (for example, including terminal devices and network devices), and the present application does not limit its specific implementation method. For example, predefined can refer to what is defined in the protocol. It should also be understood that in the embodiments of the present application, the “protocol” may refer to a standard protocol in the field of communications, for example, it may include LTE protocols, NR protocols, and related protocols used in future communication systems, and the present application does not limit this.

[0066] To facilitate understanding of the technical solutions of the embodiments of the present application, the relevant technologies of the embodiments of the present application are described below. The following relevant technologies can be arbitrarily combined with the technical solutions of the embodiments of the present application as optional solutions, and they all fall within the protection scope of the embodiments of the present application.

[0067] In related technologies, the NR (New Radio) system supports the base station side using channel reciprocity to obtain downlink channel information by measuring the SRS (Sounding Reference Signal). The SRS signal is a signal used to measure and evaluate channel quality. In the NR system, supporting the base station side using channel reciprocity to obtain downlink channel information by measuring the SRS is a common technical means. Specifically, the SRS is a signal periodically sent by the terminal equipment (UE) to help the base station understand the quality and characteristics of the downlink channel. By measuring the SRS, the base station can obtain information about the channel state, signal-to-noise ratio, and other wireless environment parameters, thereby performing better signal scheduling and resource allocation. In terms of channel reciprocity, this means that there is a certain degree of symmetry between the uplink and downlink channels. Therefore, the base station can obtain information about the downlink channel by measuring the SRS (usually in the uplink frequency band). This information includes channel fading, multipath effects, interference levels, etc., providing an important reference for the base station to optimize the transmission of downlink signals. In general, by using SRS measurements to obtain downlink channel information, the NR system can more effectively manage and optimize wireless resources, improve the performance of the communication system and user experience. The application of this technology helps achieve better coverage, higher data transmission rates and more reliable communication connections.

[0068] In some embodiments, to support UEs with fewer transmit antennas than receive antennas in obtaining downlink information through channel reciprocity, antenna switching is used to transmit SRS. Specifically, if a UE has fewer transmit antennas than receive antennas, the UE can select a subset of antennas to transmit the SRS. This allows the UE to leverage channel reciprocity to obtain downlink channel information, even if the UE supports fewer transmit antennas than receive antennas. The selected antennas periodically transmit SRS signals, typically sent by the UE according to a specific scheduling period, allowing the base station to continuously obtain information about the channel state. Upon receiving the SRS signals from the UE, the base station can measure and analyze them to obtain information about the downlink channel. By processing the SRS signals, the base station can understand channel parameters such as fading and multipath. The base station can use the information obtained from the SRS measurements to optimize the downlink, including signal scheduling and beamforming, to improve signal transmission efficiency and reliability. By utilizing this antenna switching approach, even UEs with fewer transmit antennas can effectively leverage channel reciprocity to obtain downlink channel information, thereby improving system performance. This approach has a positive effect on supporting multiple antenna configurations and improving system flexibility.

[0069] In some embodiments, when an antenna switching method is used to transmit an SRS, the following steps may be included:

[0070] 1) Configure SRS transmit antennas: The UE first needs to be configured to select the antennas for SRS transmission. This can be done through RRC (Radio Resource Control) signaling, which contains information about the SRS configuration, such as the number of selected antennas, the frequency and interval of SRS transmission, etc.

[0071] 2) Select antennas and send SRS: Within a specified time interval, the UE selects pre-configured transmit antennas and sends SRS signals. The number of selected antennas can be less than the number of antennas actually supported, thereby achieving antenna switching.

[0072] 3) SRS signal structure: The structure of an SRS signal typically includes information about the UE and transmit antennas, as well as reference signals used for measurement. This information is specified in the SRS configuration and is correctly organized and transmitted when it is sent.

[0073] 4) Base station receives SRS signal: The base station receives the SRS signal sent by the UE at the corresponding time and frequency. Since some antennas are selected for transmission, the base station may only receive SRS signals from some antennas within a certain period of time.

[0074] 5) SRS signal processing: The base station processes the received SRS signal and extracts information about the channel, including measurements of parameters such as fading, multipath effects, and signal strength. The processing method depends on the system design and channel estimation algorithm.

[0075] 6) Downlink optimization: The base station optimizes the downlink based on the information obtained from the SRS signal, including strategies such as beamforming, power adjustment, and resource allocation to ensure the best downlink signal transmission quality under limited resources.

[0076] 7) Periodic repetition: The UE sends SRS signals at predetermined time intervals, and the base station periodically receives and processes these signals to maintain real-time understanding of the channel status.

[0077] It should be understood that by adopting antenna switching, even if the UE supports a small number of transmitting antennas, it can still obtain downlink channel information through SRS measurement so that the base station can optimize and adjust the channel status. Such flexibility helps to achieve better performance under different network conditions.

[0078] To facilitate understanding of the technical solutions of the embodiments of the present application, the relevant technologies of the embodiments of the present application are described below. The following relevant technologies can be arbitrarily combined with the technical solutions of the embodiments of the present application as optional solutions, and they all fall within the protection scope of the embodiments of the present application.

[0079] 1. Basic configuration of NR SRS

[0080] The basic configuration of SRS in NR is as follows:

[0081] A) NR Release 15 (Rel-15) supports 64 SRS bandwidth configurations. The minimum configurable bandwidth for an SRS resource is 4 resource blocks (RBs), and the maximum bandwidth is 272 RBs. Specifically, the system can select 64 different bandwidth configurations to transmit SRS signals as needed. SRS signals can occupy at least 4 RBs of bandwidth, and the maximum bandwidth that an SRS signal can occupy is 272 RBs.

[0082] B) For different SRS uses, the base station can configure different SRS resource sets for the terminal and indicate the use of the SRS resource set through high-layer signaling. For example, the SRS resource set can be used for antenna switching. In order to avoid wasting resources while achieving the target function, the NR system specifies the number of SRS resource sets that can be configured for different uses and the configuration of the resource sets. The maximum number of SRS resources that an SRS resource set can contain and the maximum number of SRS ports that an SRS resource can contain depend on the UE's capabilities and the use of the SRS resource set.

[0083] 2. NR Release 15 SRS Antenna Switching Solution

[0084] The NR system supports the base station side to obtain downlink channel information by measuring SRS using channel reciprocity. Due to cost and hardware limitations, the number of antennas that the UE transmits simultaneously may be less than the number of receiving antennas, resulting in different UEs having different antenna transceiver capabilities. In order to support UEs with fewer transmitting antennas than receiving antennas to obtain downlink information through channel reciprocity, an antenna switching transmission method is adopted. The transceiver capabilities discussed in Rel-15 include: the number of transmitting antennas is the same as the number of receiving antennas (i.e., T=R), the number of transmitting antennas is 1 and the number of receiving antennas is 2 (i.e., 1T2R), the number of transmitting antennas is 1 and the number of receiving antennas is 4 (i.e., 1T4R), and the number of transmitting antennas is 2 and the number of receiving antennas is 4 (i.e., 2T4R). In the subsequent description, the number of transmitting antennas is the number of SRS ports, and the number of receiving antennas is the number of antenna ports. Different antenna transceiver capabilities, for example, the base station can configure an SRS resource set for the terminal for downlink channel information acquisition in one of the following ways:

[0085] 1) T = R: configure up to 2 SRS resource sets, each resource set contains one SRS resource, and the number of SRS ports associated with the SRS resource is 1, 2, or 4;

[0086] 2) 1T2R: A maximum of 2 resource sets are configured. One resource set contains 2 SRS resources sent in different OFDM symbols. The number of SRS ports associated with each SRS resource is 1.

[0087] 3) 2T4R: A maximum of 2 resource sets are configured. One resource set contains 2 SRS resources sent in different OFDM symbols, and each SRS resource is associated with two SRS ports.

[0088] In some embodiments, as shown in FIG2 , taking 2T4R (2 transmitting antennas and 4 receiving antennas) as an example, the transmitting channel is the port of the transmitting antenna of the terminal, the receiving channel is the port of the receiving antenna, the number of transmitting antennas is 2, and the number of receiving antennas is 4. Exemplary. The terminal sends a first SRS resource to the base station through two transmitting antennas. The base station can perform downlink channel estimation based on the first SRS resource and obtain downlink channel information corresponding to the two receiving antennas (the two receiving antennas indicated by the solid line in FIG2 ) corresponding to (associated with) the first SRS resource. Similarly, the terminal sends a second SRS resource to the base station through two transmitting antennas. The base station can perform downlink channel estimation based on the second SRS resource and obtain downlink channel information corresponding to the two receiving antennas (the two receiving antennas indicated by the dotted line in FIG2 ) corresponding to (associated with) the second SRS resource.

[0089] 3. Fallback mechanism for SRS antenna switching

[0090] The fallback mechanism for SRS antenna switching is that the UE reports the combinations of transmit antennas and receive antennas that can be supported for antenna switching in the UE capabilities. For a certain combination of transmit antennas and receive antennas, the network equipment configures the SRS resource set applicable to the combination, the number of SRS resources in the SRS resource set, the ports of the SRS resources, etc.

[0091] In some embodiments, for example, the fallback mechanism of the existing SRS antenna switching includes: the UE reports the combination of transmitting antennas and receiving antennas as {t1r1, t1r2, t1r4}, that is, the UE supports {the number of transmitting antennas is 1 and the number of receiving antennas is 1, the number of transmitting antennas is 1 and the number of receiving antennas is 2, the number of transmitting antennas is 1 and the number of receiving antennas is 4}, then the base station can configure one of the combinations of the number of transmitting antennas and the number of receiving antennas.

[0092] In the related art, the NR system supports the base station side to obtain downlink channel information by measuring SRS using channel reciprocity. In order to support UEs with fewer transmitting antennas than receiving antennas to obtain downlink information through channel reciprocity, SRS is sent by antenna switching. The configurations of the number of transmitting and receiving antennas supported by the existing technology include: the number of transmitting antennas is the same as the number of receiving antennas (ie, T = R), the number of receiving antennas is an integer multiple of the number of transmitting antennas and the number of transmitting antennas is 1 or 2 (ie, 1T2R, 1T4R, 2T4R). It can be seen that the related art has the following problems: the power of the ports corresponding to the SRS resources used for antenna switching may be different, which will affect the accuracy of downlink channel information acquisition.

[0093] Based on this, the present application provides a communication method to improve the accuracy of downlink channel information acquisition. On the one hand, P power scaling factors adjust the linear value of the transmit power of the SRS resources so that the actual values ​​of the transmit power of the transmit antennas corresponding to different SRS resources in the P SRS resources are the same to adapt to different communication scenarios and system optimization goals. This helps to more accurately estimate and measure the channel quality in the downlink, thereby improving the accuracy of downlink channel information acquisition. On the other hand, by using the SRS signal, the downlink channel quality can be measured on the uplink, and this information can be used to better configure and optimize the downlink. By adjusting the transmit power and configuration of the SRS resources, the system can adapt to different channel conditions more accurately, thereby improving the accuracy of channel estimation. The use of power scaling factors enables the system to dynamically adjust the transmit power to adapt to different communication scenarios, thereby further improving the performance of the system.

[0094] To facilitate understanding of the technical solutions of the embodiments of the present application, the technical solutions of the present application are described in detail below through specific embodiments. The above related technologies can be combined arbitrarily with the technical solutions of the embodiments of the present application as optional solutions, and all of them fall within the scope of protection of the embodiments of the present application. The embodiments of the present application include at least part of the following contents.

[0095] FIG3 is a flowchart diagram 1 of an optional communication method provided in an embodiment of the present application. The method may include S101:

[0096] S101. The terminal sends P SRS resources according to the SRS configuration information and power scaling information; wherein the power scaling information includes P power scaling factors; the P power scaling factors correspond one-to-one to the P SRS resources; the P SRS resources are the SRS resources for antenna switching indicated by the SRS configuration information; the P power scaling factors are used to ensure that the transmission power of the SRS ports corresponding to different SRS resources among the P SRS resources is the same; and P is a positive integer greater than or equal to 1.

[0097] Accordingly, the network device receives P SRS resources; wherein, the P SRS resources are related to SRS configuration information and power scaling information; the power scaling information includes P power scaling factors; the P power scaling factors correspond one-to-one to the P SRS resources; the P SRS resources are SRS resources for antenna switching indicated by the SRS configuration information; the P power scaling factors are used to ensure that the transmission power of the SRS ports corresponding to different SRS resources among the P SRS resources is the same; P is a positive integer greater than or equal to 1.

[0098] In the embodiment of the present application, after the terminal sends P SRS resources according to the SRS configuration information and the power scaling information, the network device receives the P SRS resources sent by the terminal accordingly.

[0099] In the embodiment of the present application, P SRS resources refer to resources used to send a group of SRS signals, and each SRS resource may include one or more SRS signals.

[0100] In an embodiment of the present application, P SRS resources are SRS resources for antenna switching indicated by the SRS configuration information, and the network device uses channel reciprocity to obtain the downlink channel information of the terminal based on the P SRS resources sent by the terminal. Specifically, channel reciprocity means that in wireless communication, the channel characteristics of the uplink and downlink are statistically similar. Therefore, by observing the SRS signal (SRS resource) sent by the terminal, the network device can infer the corresponding downlink channel information. Furthermore, the network device makes an estimate based on the inferred downlink channel information to optimize operations such as downlink resource allocation and beamforming.

[0101] It should be understood that by switching antennas, the network device can obtain downlink channel information using the P SRS resources sent by the terminal without additional downlink measurements. This helps the system to more effectively utilize channel state information and improve the performance and efficiency of the communication system.

[0102] In this embodiment of the present application, the power scaling information includes P power scaling factors corresponding to P SRS resources, where the sources of the power scaling information may include the following:

[0103] Source 1: Power scaling information can be sent by network devices.

[0104] For example, the network device can send power scaling information to the terminal via high-layer signaling. This approach allows the network to dynamically adjust the power scaling factor to adapt to real-time communication needs and channel conditions.

[0105] Source 2: Power scaling information may be specified by the protocol.

[0106] Exemplarily, the configuration method of the power scaling information can be specified in the communication protocol (adding relevant message elements and parameters), and the terminal and network equipment must comply with the protocol provisions.

[0107] Source 3: Power scaling information is determined by the terminal side.

[0108] Exemplarily, the power scaling information may be a parameter pre-set on the terminal side.

[0109] It should be noted that the power scaling information can also be used to dynamically calculate the power scaling factor based on real-time channel measurements and system status through an automatic adjustment algorithm. This adaptive approach allows the system to dynamically adjust according to actual conditions to optimize the transmit power. The sources of power scaling information listed above are only examples. In actual application scenarios, other sources may also be included, and the embodiments of this application do not impose any restrictions on this.

[0110] In an embodiment of the present application, each power scaling factor corresponds to an SRS resource. Exemplarily, the P SRS resources include: the first SRS resource, the second SRS resource and the third SRS resource. The scaling factor corresponding to the first SRS resource is 1, the scaling factor corresponding to the second SRS resource is 1 / 2, and the scaling factor corresponding to the third SRS resource is 1 / 4.

[0111] In an embodiment of the present application, P power scaling factors are used to ensure that the transmission power of the SRS ports corresponding to different SRS resources among the P SRS resources is the same. That is, the purpose of the power scaling factor is to adjust the transmission power of different SRS resources to maintain balance between them and ensure balanced transmission on the wireless link.

[0112] In some embodiments of the present application, the network device sends SRS configuration information and / or power scaling information to the terminal.

[0113] Correspondingly, the terminal receives the SRS configuration information and / or power scaling information sent by the network device.

[0114] In the embodiment of the present application, the power scaling information may be sent from the network device to the terminal, or may be agreed upon between the terminal and the network device, which is not limited in the embodiment of the present application.

[0115] In the embodiment of the present application, the sources of SRS configuration information may include the following three types:

[0116] Source 1: SRS configuration information can be sent from the network device to the terminal.

[0117] In some embodiments of the present application, based on FIG3 , as shown in FIG4 , the method further includes S102:

[0118] S102: The network device sends SRS configuration information to the terminal.

[0119] Correspondingly, the terminal receives the SRS configuration information sent by the network device. Exemplarily, the SRS configuration information may include the time domain configuration, frequency domain configuration, transmit antenna configuration, etc. of the SRS resource set, as well as other related parameters.

[0120] It should be understood that the manner of sending SRS configuration information by the network device to the terminal can flexibly allow the network device to perform dynamic configuration according to real-time communication requirements and channel conditions.

[0121] Source 2: The SRS configuration information may be specified in the protocol.

[0122] For example, the communication standard may specify SRS configuration information, including time domain configuration, frequency domain configuration, transmit antenna configuration, etc. These configuration information are defined in the protocol specifications, and terminal devices and network devices need to comply with these specifications.

[0123] Source 3: The SRS configuration information may be a parameter value set in other ways.

[0124] For example, in some cases, the value of the SRS configuration parameter may be set through other means, such as through device management or network management.

[0125] It should be noted that the three sources of SRS configuration information listed above are only examples. In actual application scenarios, other sources or acquisition methods may also be included, and the embodiments of the present application do not impose any limitations on this.

[0126] It should be understood that SRS configuration information from different sources can improve the diversity and flexibility of SRS configuration information to adapt to different traffic scenarios and channel conditions, help optimize the performance of the communication system (hereinafter referred to as the system), and enable the system to adapt more flexibly to dynamically changing channel conditions.

[0127] In some embodiments of the present application, the SRS configuration information includes one or more of the following:

[0128] A first quantity, where the first quantity is the number of transmit antennas supported by the terminal;

[0129] A second number, where the second number is the number of receiving antennas supported by the terminal;

[0130] The terminal's transport layer number information, which is used to indicate the number of transport layers supported by the terminal;

[0131] SRS resource set information, where the SRS resource set information is used to indicate one or more SRS resource sets;

[0132] SRS resource information, where the SRS resource information is used to indicate the SRS resources included in the SRS resource set;

[0133] Port information: The port information is used to indicate the SRS port and antenna port corresponding to the SRS resource.

[0134] In the embodiment of the present application, the first quantity represents the number of antennas supported by the terminal for transmitting SRS signals. The first quantity can be expressed as T, and the second quantity can be expressed as R. For example, 1T2R indicates that the number of transmit antennas supported by the terminal (the first quantity) is 1, and the terminal indicates that the number of receive antennas supported by the terminal (the second quantity) is 2. 2T4R indicates that the number of transmit antennas supported by the terminal is 2, and the terminal indicates that the number of receive antennas supported by the terminal is 4.

[0135] In an embodiment of the present application, the transmission layer number information is used to indicate the number of data streams supported by the terminal for uplink transmission. In a MIMO system, this indicates the number of data streams that the terminal can transmit simultaneously. In some embodiments, the transmission layer number information indicates the number of transmit antennas supported by the terminal.

[0136] In the embodiment of the present application, the SRS resource set information includes configuration information of the SRS resource set, which may include time domain configuration, frequency domain configuration, etc. The SRS resource set is a collection of resources used to send an SRS signal.

[0137] In the embodiment of the present application, the SRS resource information includes the specific configuration of each SRS resource, which may include parameters such as time domain configuration, frequency domain configuration, and transmit antenna port.

[0138] In the embodiment of the present application, the port information is used to indicate the configuration information of the SRS port and antenna port corresponding to the SRS resource. The SRS port can also be understood as the transmitting antenna of the terminal used to send the SRS resource, and the antenna port can also be understood as the receiving antenna of the terminal corresponding to the SRS resource when the antenna is switched.

[0139] In the embodiment of the present application, the SRS port (also described as SRS port) can be expressed as TX, and the antenna port can be expressed as AP.

[0140] For example, SRS port 0 (or the first SRS port) can be represented as TX0, SRS port 1 (or the second SRS port) can be represented as TX1, and SRS port 3 (or the second SRS port) can be represented as TX2. Here, TX0, TX1, and TX2 correspond to different SRS ports.

[0141] Similarly, antenna port 0 (or the first antenna port) can be represented as AP0, antenna port 1 (or the second antenna port) can be represented as AP1, and antenna port 2 (or the third antenna port) can be represented as AP2. Here, AP0, AP1, and AP2 correspond to different antenna ports.

[0142] It is understandable that SRS configuration information helps the system better utilize antenna resources, adapt to different communication scenarios, improve system capacity and spectrum efficiency, and support a series of optimization functions such as beamforming and antenna switching, which helps to improve the overall performance of the communication system and user experience.

[0143] In some embodiments of the present application, P SRS resources belong to 1 or M SRS resource sets, where M is a positive integer greater than or equal to 2.

[0144] In the embodiment of the present application, the P SRS resources may belong to the same SRS resource set, or the P SRS resources may belong to different SRS resource sets.

[0145] For example, assuming that P SRS resources include: the first SRS resource, the second SRS resource, and the third SRS resource, the P SRS resources have the following situations:

[0146] Case 1: The first SRS resource, the second SRS resource, and the third SRS resource all belong to the first SRS resource set;

[0147] Case 2: The first SRS resource belongs to the first SRS resource set, the second SRS resource belongs to the second SRS resource set, and the third SRS resource belongs to the third SRS resource set.

[0148] Case 3: The first SRS resource and the second SRS resource belong to the first SRS resource set, and the third SRS resource belongs to the second SRS resource set.

[0149] It is understandable that since the P SRS resources belong to one or M SRS resource sets, this indicates that the SRS configuration in the system is flexible, and the P SRS resources can be divided into one or more SRS resource sets. On the one hand, SRS resources can be divided into multiple resource sets in different combinations based on actual communication scenarios and network requirements, helping the system better adapt to different channel conditions and mobility situations. On the other hand, if the P SRS resources are distributed across multiple resource sets, the system can perform multiple channel measurements simultaneously, thereby gaining a more comprehensive understanding of the status of different channels, facilitating more accurate channel estimation and beamforming operations. On the other hand, in multi-user or multi-antenna scenarios, dividing SRS resources into multiple independently configurable SRS resource sets helps to more effectively support multi-user connections and multi-antenna operation of the system. When antenna switching is required, allocating SRS resources into multiple resource sets allows for flexible switching operations to improve system performance and coverage.

[0150] In some embodiments of the present application, different SRS resources in the same SRS resource set correspond to the same or different numbers of SRS ports; and / or, SRS resources in different SRS resource sets correspond to different numbers of SRS ports.

[0151] In the embodiment of the present application, the number of SRS ports corresponding to each of the P SRS resources has the following four cases:

[0152] Case 1: When P SRS resources belong to the same SRS resource set, the number of SRS ports corresponding to the P SRS resources is the same.

[0153] Exemplarily, the P SRS resources include: the first SRS resource, the second SRS resource and the third SRS resource, the P SRS resources are all in the first SRS resource set, and the number of SRS ports corresponding to the first SRS resource, the second SRS resource and the third SRS resource are all 3.

[0154] Case 2: When P SRS resources belong to the same SRS resource set, the numbers of SRS ports corresponding to the P SRS resources are different.

[0155] In the embodiment of the present application, when P SRS resources belong to the same SRS resource set, all or part of the P SRS resources correspond to different numbers of SRS ports.

[0156] Exemplarily, the P SRS resources include: a first SRS resource, a second SRS resource, and a third SRS resource, and the P-th SRS resource is in the first SRS resource set. The number of SRS ports corresponding to the first SRS resource is 3, the number of SRS ports corresponding to the second SRS resource is 4, and the number of SRS ports corresponding to the third SRS resource is 1. Alternatively, the number of SRS ports corresponding to the first SRS resource and the second SRS resource is 3, and the number of SRS ports corresponding to the third SRS resource is 1.

[0157] Case 3: When P SRS resources belong to different SRS resource sets, different SRS resources in the same SRS resource set correspond to the same number of SRS ports, and SRS resources in different SRS resource sets correspond to different numbers of SRS ports.

[0158] In an embodiment of the present application, when at least two of the P SRS resources belong to different SRS resource sets, the number of SRS ports corresponding to different SRS resources in the same SRS resource set is the same, and the number of SRS ports corresponding to SRS resources in different SRS resource sets is different.

[0159] Exemplarily, the P SRS resources include: a first SRS resource, a second SRS resource, and a third SRS resource, where the first SRS resource belongs to a first SRS resource set, the second SRS resource belongs to a second SRS resource set, and the third SRS resource belongs to a third SRS resource set. The number of SRS ports corresponding to the first SRS resource is 1, the number of SRS ports corresponding to the second SRS resource is 2, and the number of SRS ports corresponding to the third SRS resource is 3.

[0160] Exemplarily, the P SRS resources include: a first SRS resource, a second SRS resource, and a third SRS resource, where the first SRS resource and the second SRS resource belong to a first SRS resource set, and the third SRS resource belongs to a second SRS resource set. The number of SRS ports corresponding to the first SRS resource and the second SRS resource is 2, and the number of SRS ports corresponding to the third SRS resource is 3.

[0161] Case 4: When P SRS resources belong to different SRS resource sets, different SRS resources in the same SRS resource set correspond to different numbers of SRS ports, and SRS resources in different SRS resource sets correspond to different numbers of SRS ports.

[0162] In an embodiment of the present application, when at least two of the P SRS resources belong to different SRS resource sets, the number of SRS ports corresponding to at least two SRS resources in the same SRS resource set is different, and the number of SRS ports corresponding to SRS resources in different SRS resource sets is different.

[0163] Exemplarily, the P SRS resources include: a first SRS resource, a second SRS resource, a third SRS resource, and a fourth SRS resource. The first SRS resource, the second SRS resource, and the third SRS resource belong to the first SRS resource set, and the fourth SRS resource belongs to the second SRS resource set. The number of SRS ports corresponding to the first SRS resource and the second SRS resource is 2, the number of SRS ports corresponding to the third SRS resource is 3, and the number of SRS ports corresponding to the fourth SRS resource is 4. Alternatively, the number of SRS ports corresponding to the first SRS resource, the second SRS resource, and the third SRS resource is 2, and the number of SRS ports corresponding to the fourth SRS resource is 4.

[0164] It should be noted that the number of SRS ports corresponding to the SRS resources in different SRS resource sets may also be the same.

[0165] Exemplarily, the P SRS resources include: a first SRS resource, a second SRS resource, and a third SRS resource, where the first SRS resource belongs to a first SRS resource set, the second SRS resource belongs to a second SRS resource set, and the third SRS resource belongs to a third SRS resource set. The number of SRS ports corresponding to the first SRS resource, the second SRS resource, and the third SRS resource is 2.

[0166] It is understandable that, on the one hand, allowing different SRS resources in the same resource set to have different numbers of SRS ports, and allowing SRS resources in different resource sets to be configured with different numbers of SRS ports, enables the system to more flexibly adapt to different antenna configuration requirements, including devices that support multiple antennas. On the other hand, SRS resources in different SRS resource sets can be configured with different numbers of SRS ports, which is very important for supporting multi-user operation. Each user or device may require a different number of SRS ports to meet their specific communication needs. On the other hand, configuring resources in different SRS resource sets with different numbers of SRS ports helps optimize antenna switching operations. The system can adjust the configuration of SRS ports based on network requirements and environmental conditions to improve the efficiency and performance of antenna switching. In summary, the above-mentioned flexible configuration method of the number of SRS ports corresponding to SRS resources enables the system to better adapt to diverse communication scenarios, support multi-user operation, and optimize resource utilization and performance.

[0167] In some embodiments of the present application, different SRS resource sets include the same or different numbers of SRS resources.

[0168] In the embodiment of the present application, the number of SRS resources included in the SRS resource set has the following two cases:

[0169] Case 1: Different SRS resource sets include the same number of SRS resources.

[0170] Exemplarily, the P SRS resources belong to a first SRS resource set and a second SRS resource set, and the number of SRS resources included in the first SRS resource set and the second SRS resource set are both 2.

[0171] Case 2: Different SRS resource sets include the same number of SRS resources.

[0172] Exemplarily, the P SRS resources belong to a first SRS resource set and a second SRS resource set. The number of SRS resources included in the first SRS resource set is 2, and the number of SRS resources included in the second SRS resource set is 4.

[0173] Exemplarily, the P SRS resources belong to a first SRS resource set, a second SRS resource set, and a third SRS resource set. The number of SRS resources included in the first SRS resource set and the second SRS resource set is 2, and the number of SRS resources included in the third SRS resource set is 4. Alternatively, the number of SRS resources included in the first SRS resource set is 1, the number of SRS resources included in the second SRS resource set is 2, and the number of SRS resources included in the third SRS resource set is 4.

[0174] It is understandable that different SRS resource sets contain different numbers of SRS resources. On the one hand, this allows the system to flexibly configure and allocate resources as needed to adapt to different network scenarios and communication requirements. On the other hand, it helps support multi-user operations. Each user or device may require a different number of SRS resources to meet its specific communication requirements. By flexibly configuring the number of SRS resources in different SRS resource sets, the system can better adapt to changes in available spectrum and antenna configuration.

[0175] In some embodiments of the present application, different SRS resource sets are of the same or different types; the types of SRS resource sets include any one or more of periodic, aperiodic, and semi-persistent.

[0176] In an embodiment of the present application, the types of SRS resource sets include periodic, non-periodic and semi-persistent. Among them, the periodic SRS resource set is sent at a predetermined time interval. This periodic transmission allows the base station to track changes in the UE channel quality and is used to perform operations such as beamforming in the uplink. The transmission interval of the periodic SRS is determined by the system configuration. The non-periodic SRS resource set does not have a fixed time interval, but is sent as needed. This flexibility allows for faster channel quality reporting when needed, which is suitable for sudden channel changes or data transmission requirements. The semi-persistent resource set is between periodic and non-periodic. It allows devices to obtain resources within a certain time interval, but its scheduling may have greater flexibility compared to the periodic resource set.

[0177] It should be understood that the diversity of SRS resource sets allows the system to better adapt to different applications, quality of service requirements, and communication scenarios. Periodic resource sets are suitable for real-time and periodic data transmission, aperiodic resource sets are suitable for bursty transmission, and semi-persistent resource sets provide a compromise option, suitable for application scenarios between the two.

[0178] In the embodiment of the present application, the types of SRS resource sets corresponding to P SRS resources are as follows:

[0179] Case 1: Different SRS resource sets have the same type.

[0180] Exemplarily, the P SRS resources include: a first SRS resource, a second SRS resource, and a third SRS resource. The first SRS resource and the second SRS resource belong to a first SRS resource set, and the second SRS resource belongs to a second SRS resource set. Both the first SRS resource set and the second SRS resource set are of aperiodic type.

[0181] Case 2: Different SRS resource sets have different types.

[0182] In this embodiment of the present application, the at least two SRS resource sets to which the P SRS resources belong are of different types.

[0183] Exemplarily, the P SRS resources include: a first SRS resource, a second SRS resource, a third SRS resource, and a fourth SRS resource. The first SRS resource and the second SRS resource belong to the first SRS resource set, the third SRS resource belongs to the second SRS resource set, and the fourth SRS resource belongs to the third SRS resource set. The type of the first SRS resource set is periodic, the type of the second SRS resource set is aperiodic, and the type of the third SRS resource set is semi-persistent. Alternatively, the type of the first SRS resource set and the second SRS resource set are both aperiodic, and the type of the third SRS resource set is semi-persistent.

[0184] It should be noted that the type of the SRS resource set may consist of N types, where N is a positive integer greater than or equal to 2. Exemplarily, the types of the SRS resource set are: periodic + aperiodic, periodic + semi-persistent, and aperiodic + semi-persistent.

[0185] It is understandable that, on the one hand, allowing different SRS resource sets to have different types enables the system to better adapt to different communication scenarios. The periodic type is suitable for situations where periodic channel measurements are required, the aperiodic type is suitable for sudden channel changes, and the semi-persistent type provides a compromise option. On the one hand, the combination of different SRS resource set types can optimize system performance. For example, while some users require periodic channel measurements, other users may be more suitable for aperiodic or semi-persistent scheduling, thereby improving efficiency in the entire system. On the one hand, allowing the use of different types of SRS resource sets helps to utilize wireless resources more flexibly, which is very important for optimizing spectrum usage, increasing system capacity, and adapting to different user needs.

[0186] In some embodiments of the present application, different SRS resources occupy different time domain positions.

[0187] In the embodiment of the present application, at least two SRS resources among the P SRS resources occupy different time domain positions.

[0188] Exemplarily, the P SRS resources include: a first SRS resource, a second SRS resource, and a third SRS resource. The first SRS resource and the second SRS resource both occupy time domain position 1, and the third SRS resource occupies time domain position 2. Alternatively, the first SRS resource occupies time domain position 1, the second SRS resource occupies time domain position 2, and the third SRS resource occupies time domain position 3.

[0189] It's understandable that the temporal location differences of different SRS resource sets can reduce temporal conflicts between resources and help avoid interference. This temporal diversity allows the system to better support multi-user operation, allowing each SRS resource to be allocated to a different temporal location, thereby reducing mutual interference. Overall, temporal diversity of SRS resources provides greater flexibility, helping to reduce interference and optimize system performance.

[0190] In some embodiments of the present application, the different time domain positions include one or more of the following:

[0191] The time slots are different;

[0192] The symbols are different.

[0193] In the embodiment of the present application, different symbols include: different starting symbols, and / or different numbers of symbols occupied by SRS resources.

[0194] In the embodiments of the present application, the time domain locations of different SRS resource sets can be distinguished in time slots. A time slot is a basic unit of time in wireless communications. Different SRS resource sets may be transmitted in different time slots to avoid time domain conflicts and interference. This allows the system to collect and utilize SRS resources in different time segments.

[0195] In an embodiment of the present application, a symbol is a smaller time unit within a time slot. Symbol differences may include different starting symbols, that is, the starting position of the SRS resource within the time slot is different; or the number of symbols occupied by the SRS resource is different, that is, the SRS resource may span different symbols. Specifically, on the one hand, within a time slot, different SRS resource sets can have different starting symbols. The difference in starting symbols means that their starting positions in the time domain are different, which helps to avoid conflicts and interference within the symbol. By configuring the starting symbol of each SRS resource set, their time differences are ensured. On the other hand, different SRS resource sets can occupy different numbers of symbols. The difference in the number of symbols can affect the duration and frequency domain characteristics of the SRS signal. This flexibility allows the system to adjust the time domain distribution of SRS resources as needed to meet different communication needs.

[0196] It is understandable that the differences in the time domain positions of SRS resources provide greater flexibility for the system. Different distributions of time slots and symbols can help avoid conflicts in the time domain and improve system reliability and performance.

[0197] In some embodiments of the present application, the time slots of SRS resources in different SRS resource sets are different, and / or the symbols of different SRS resources in the same resource set are different.

[0198] In the embodiment of the present application, the time domain position occupied by the SRS resource has the following two situations:

[0199] Case 1: The time slots of SRS resources in different SRS resource sets are different.

[0200] In the embodiment of the present application, the time slots of the SRS resources in at least two SRS resource sets are different. The difference in time slots between different SRS resource sets means that they are configured in different time segments.

[0201] Exemplarily, the P SRS resources belong to the first SRS resource set, the second SRS resource set, and the third SRS resource set. The first SRS resource set occupies time slot 1, the second SRS resource set occupies time slot 2, and the third SRS resource set occupies time slot 3. Alternatively, the first SRS resource set and the second SRS resource set both occupy time slot 1, and the third SRS resource set occupies time slot 2.

[0202] It should be understood that configuring different SRS resource sets in different time slots can avoid time domain conflicts and improve system reliability and performance. In addition, since SRS resource sets in different time slots can be transmitted independently, the system can more efficiently utilize spectrum resources.

[0203] Case 2: Different SRS resources in the same resource set have different symbols.

[0204] In the embodiment of the present application, at least two SRS resources in the same resource set occupy different symbols.

[0205] Exemplarily, the first SRS resource set includes: a first SRS resource, a second SRS resource, and a third SRS resource. The first SRS resource occupies symbol 1, the second SRS resource occupies symbol 2, and the third SRS resource occupies symbol 3. Alternatively, the first SRS resource and the second SRS resource both occupy symbol 1, and the third SRS resource occupies symbol 2.

[0206] It should be understood that different SRS resources may have different starting symbols within the same time slot, which helps avoid intra-symbol conflicts and interference. In addition, different SRS resources may occupy different numbers of symbols. This difference can affect the duration and frequency domain characteristics of the SRS signal, making the system more flexible to adapt to different communication needs.

[0207] In some embodiments of the present application, different SRS resources are associated with different antenna ports.

[0208] Exemplarily, the P SRS resources include: a first SRS resource and a second SRS resource. The antenna ports associated with the first SRS resource are: the first antenna port (AP1) and the second antenna port (AP3), and the antenna ports associated with the second SRS resource are: the third antenna port (AP3) and the fourth antenna port (AP4). AP1, AP2, AP3, and AP4 are four different antenna ports.

[0209] It can be understood that associating different antenna ports can provide a more comprehensive estimation of the channel, provide the system with more flexibility in space and time domains, and thus improve the performance and adaptability of the communication system.

[0210] In the related art, the configuration of the number of transmitting and receiving antennas supported for antenna switching includes: the number of transmitting antennas is the same as the number of receiving antennas (i.e., T=R), the number of receiving antennas is an integer multiple of the number of transmitting antennas and the number of transmitting antennas is 1 or 2 (i.e., 1T2R, 1T4R, 2T4R). It can be seen that the existing technology cannot support antenna switching scenarios where the number of SRS ports is 3 ports (such as 3T8R and 3T4R) when SRS antenna switching. Based on this, the present application provides the configuration of SRS ports and antenna ports for the 3T8R (3 receiving antennas and 8 transmitting antennas) and 3T4R (3 receiving antennas and 4 transmitting antennas) scenarios.

[0211] The following describes four configurations of SRS ports and antenna ports in a 3T8R scenario (ie, the first number is 3 and the second number is 8).

[0212] Port configuration case 1: When the first number is 3 and the second number is 8, the P SRS resources include: 2 first SRS resources with the number of SRS ports being 3 and 1 second SRS resource with the number of SRS ports being 2.

[0213] In some embodiments of the present application, a first SRS resource with 3 SRS ports is associated with 3 antenna ports; a second SRS resource with 2 SRS ports is associated with 2 antenna ports; and a third SRS resource with 1 SRS port is associated with 1 SRS port and 1 antenna port.

[0214] In this embodiment of the present application, the P SRS resources include: a first SRS resource (SRS resource 0), a second SRS resource (SRS resource 1), and a third SRS resource (SRS resource 2). The first SRS resource and the second SRS resource are both first SRS resources with a number of SRS ports of 3, and the third SRS resource is a second SRS resource with a number of SRS ports of 2.

[0215] For example, Table 1 is a schematic diagram of a port configuration of an SRS resource provided in an embodiment of the present application:

[0216] Table 1

[0217] As shown in Table 1, the P SRS resources include: SRS resource 0, SRS resource 1, and SRS resource 2. The SRS ports include: the first SRS port (TX0), the first SRS port (TX1), and the second SRS port (TX2). The antenna ports include: the first antenna port (AP0), the second antenna port (AP1), the third antenna port (AP2), the fourth antenna port (AP3), the fifth antenna port (AP4), the sixth antenna port (AP5), the seventh antenna port (AP6), and the eighth antenna port (AP7).

[0218] For SRS resource 0, TX0 is associated with AP0, TX1 is associated with AP1, and TX2 is associated with AP2. As can be seen, SRS resource 0 is associated with 3 SRS ports and 3 antenna ports.

[0219] For SRS resource 1, TX0 is associated with AP3, TX1 is associated with AP4, and TX2 is associated with AP5. It can be seen that SRS resource 1 is associated with 3 SRS ports and 3 antenna ports.

[0220] For SRS resource 2, TX0 is associated with AP 6 and TX1 is associated with AP 7. As can be seen, SRS resource 2 is associated with two SRS ports and two antenna ports.

[0221] It should be noted that an SRS resource is associated with three SRS ports, which can be described as the number of SRS ports corresponding to the SRS resource being 3. An SRS resource is associated with two SRS ports, which can be described as the number of SRS ports corresponding to the SRS resource being 2.

[0222] It should be noted that the SRS port is associated with the antenna port, which means that the network device performs channel estimation based on the SRS resources sent by the terminal through SRS, and obtains the downlink channel information corresponding to the antenna port associated with the SRS port. For example, taking the association of TX0 and AP0 as an example, the terminal sends SRS resources to the network device through TX0, and the network device estimates the downlink channel information of the terminal corresponding to AP0 based on the received SRS resources, which is used for subsequent processing, such as beamforming, MU-MIMO (multi-user multiple input multiple output) and other technologies to optimize the performance of the communication system. In general, such an association process allows the system to know the physical antenna port corresponding to the SRS resource during channel estimation, so as to more accurately understand the communication environment between antennas and perform corresponding signal processing and optimization.

[0223] Figures 5a, 5b, and 5c are schematic diagrams of the port configuration of SRS resources. In Figures 5a, 5b, and 5c, the transmit channel represents the transmit antennas supported by the terminal, and the receive channel represents the receive antennas supported by the terminal. The number of transmit antennas is 3 (shown as TX0, TX1, and TX2 in the figure), and the number of receive antennas is 8 (shown as AP0, AP1, AP2, AP3, AP4, AP5, AP6, and AP7 in the figure). The transmit antennas can also be understood as SRS ports, and the receive antennas can also be understood as antenna ports. As shown in Figure 5a, SRS resource 0 is sent to the network device via TX0, TX1, and TX2. The network device can estimate the downlink channel information corresponding to AP0, AP1, and AP2 of the terminal based on SRS resource 0. As shown in Figure 5b, SRS resource 1 is sent to the network device via TX0, TX1, and TX2. The network device can estimate the downlink channel information corresponding to AP3, AP4, and AP5 of the terminal based on SRS resource 1. As shown in FIG5c , SRS resource 2 is sent to the network device through TX0 and TX1 . The network device can estimate downlink channel information corresponding to AP6 and AP7 of the terminal based on SRS resource 2 .

[0224] Port configuration situation 2, when the first number is 3, and the second number is 8, the P SRS resources include: 2 first SRS resources with an SRS port number of 3 consisting of 1 third SRS resource with an SRS port number of 1 and 1 second SRS resource with an SRS port number of 2; 1 second SRS resource with an SRS port number of 2.

[0225] In an embodiment of the present application, taking the port configuration of the SRS resources shown in Table 1 as an example, SRS resource 0 and SRS resource 1 are both composed of a third SRS resource with an SRS port quantity of 1 and a second SRS resource with an SRS port quantity of 2, and SRS resource 2 is a second SRS resource with an SRS port quantity of 2.

[0226] For SRS resource 0, TX0 corresponding to the second SRS resource is associated with AP0, TX1 corresponding to the second SRS resource is associated with AP1, and TX2 corresponding to the third SRS resource is associated with AP2. It can be seen that SRS resource 0 is associated with 3 SRS ports and 3 antenna ports.

[0227] For SRS resource 1, TX0 corresponding to the second SRS resource is associated with AP3, TX1 corresponding to the second SRS resource is associated with AP4, and TX2 corresponding to the third SRS resource is associated with AP5. It can be seen that SRS resource 1 is associated with 3 SRS ports and 3 antenna ports.

[0228] For SRS resource 2, TX0 is associated with AP 6 and TX1 is associated with AP 7. As can be seen, SRS resource 2 is associated with two SRS ports and two antenna ports.

[0229] Port configuration situation 3: When the first quantity is 3 and the second quantity is 8, the P SRS resources include: 2 first SRS resources with an SRS port quantity of 3 configured by 1 fourth SRS resource with an SRS port quantity of 4; 1 second SRS resource with an SRS port quantity of 2; 1 SRS port corresponding to the fourth SRS resource with an SRS port quantity of 4 is configured as unavailable.

[0230] In this embodiment of the present application, the P SRS resources include: a first SRS resource (SRS resource 0), a second SRS resource (SRS resource 1), and a third SRS resource (SRS resource 2). The first SRS resource and the second SRS resource are both first SRS resources with a number of SRS ports of 3 configured by a fourth SRS resource with a number of SRS ports of 4, and the third SRS resource is a second SRS resource with a number of SRS ports of 2.

[0231] For example, Table 2 is a schematic diagram of a port configuration of an SRS resource provided in an embodiment of the present application:

[0232] Table 2

[0233] As shown in Table 2, for SRS resource 0, TX0 corresponding to the fourth SRS resource is associated with AP0, TX1 corresponding to the fourth SRS resource is associated with AP1, TX2 corresponding to the fourth SRS resource is associated with AP2, and TX3 corresponding to the fourth SRS resource is configured as unavailable (not applied). It can be seen that SRS resource 0 is associated with three SRS ports and three antenna ports.

[0234] For SRS resource 1, TX0 is associated with AP3, TX1 is associated with AP4, TX2 is associated with AP5, and TX3 corresponding to the fourth SRS resource is configured as unavailable (not applied). It can be seen that SRS resource 1 is associated with 3 SRS ports and 3 antenna ports.

[0235] For SRS resource 2, TX0 is associated with AP 6 and TX1 is associated with AP 7. As can be seen, SRS resource 2 is associated with two SRS ports and two antenna ports.

[0236] In some embodiments of the present application, the SRS port configured as unavailable among the SRS ports corresponding to the fourth SRS resource is: the SRS port identified by the largest index, or the SRS port identified by the smallest index.

[0237] In an embodiment of the present application, the index identifier of the SRS port is used to represent the SRS port, and each SRS port corresponds to a unique index identifier. The index identifier of the SRS port is usually expressed in the form of an integer, indicating the number of different ports in the SRS resource. The specific form of this integer index may depend on the system design and protocol specifications. Typically, this index can be a positive integer that gradually increases from 1. Exemplarily, the SRS ports include: the first SRS port, the second SRS port, and the third SRS port. The index identifier of the first SRS port is 0, the index identifier of the second SRS port is 1, and the index identifier of the third SRS port is 2.

[0238] Port configuration situation 4: When the first quantity is 3 and the second quantity is 8, the P SRS resources include: 2 first SRS resources with an SRS port quantity of 3 composed of 3 third SRS resources with an SRS port quantity of 1; and 1 second SRS resource with an SRS port quantity of 2.

[0239] In this embodiment of the present application, the port configuration of the SRS resource is similar to that shown in Table 1. For SRS resource 0, TX0 corresponding to the first third SRS resource is associated with AP0, TX1 corresponding to the second third SRS resource is associated with AP1, and TX2 corresponding to the third third SRS resource is associated with AP2. It can be seen that SRS resource 0 is associated with three SRS ports and three antenna ports.

[0240] For SRS resource 1, TX0 corresponding to the first third SRS resource is associated with AP3, TX1 corresponding to the second third SRS resource is associated with AP4, and TX2 corresponding to the third third SRS resource is associated with AP5. It can be seen that SRS resource 1 is associated with three SRS ports and three antenna ports.

[0241] For SRS resource 2, TX0 is associated with AP 6 and TX1 is associated with AP 7. As can be seen, SRS resource 2 is associated with two SRS ports and two antenna ports.

[0242] Port configuration situation 5: When the first quantity is 3 and the second quantity is 8, P SRS resources include: 2 first SRS resources with an SRS port quantity of 3 consisting of 2 second SRS resources with an SRS port quantity of 2; and 1 second SRS resource with an SRS port quantity of 2.

[0243] In this embodiment of the present application, the port configuration of the SRS resource is similar to that shown in Table 2. For SRS resource 0, TX0 corresponding to the first second SRS resource is associated with AP0, TX1 corresponding to the first second SRS resource is associated with AP1, TX2 corresponding to the second second SRS resource is associated with AP2, and TX3 corresponding to the second second SRS resource is configured as unavailable. It can be seen that SRS resource 0 is associated with three SRS ports and three antenna ports.

[0244] For SRS resource 1, TX0 corresponding to the first second SRS resource is associated with AP3, TX1 corresponding to the first second SRS resource is associated with AP4, TX2 corresponding to the second second SRS resource is associated with AP5, and TX3 corresponding to the second second SRS resource is configured as unavailable. It can be seen that SRS resource 1 is associated with three SRS ports and three antenna ports.

[0245] For SRS resource 2, TX0 is associated with AP 6 and TX1 is associated with AP 7. As can be seen, SRS resource 2 is associated with two SRS ports and two antenna ports.

[0246] The following describes five configurations of SRS ports and antenna ports in a 3T4R scenario (ie, the first number is 3 and the second number is 4).

[0247] Port configuration case 1: When the first number is 3 and the second number is 4, the P SRS resources include: 1 first SRS resource with 3 SRS ports and 1 third SRS resource with 1 SRS port.

[0248] In the embodiment of the present application, the P SRS resources include: a first SRS resource (SRS resource 0) and a second SRS resource (SRS resource 1). The first SRS resource is a first SRS resource with 3 SRS ports, and the second SRS resource is a third SRS resource with 1 SRS port.

[0249] For example, Table 3 is a schematic diagram of a port configuration of an SRS resource provided in an embodiment of the present application:

[0250] Table 3

[0251] As shown in Table 3, the P SRS resources include: SRS resource 0 and SRS resource 1. The SRS ports include: the first SRS port (TX0), the first SRS port (TX1), and the second SRS port (TX2). The antenna ports include: the first antenna port (AP0), the second antenna port (AP1), the third antenna port (AP2), and the fourth antenna port (AP3).

[0252] For SRS resource 0, TX0 is associated with AP0, TX1 is associated with AP1, and TX2 is associated with AP2. As can be seen, SRS resource 0 is associated with 3 SRS ports and 3 antenna ports.

[0253] For SRS resource 1, TX2 is associated with AP3. As can be seen, SRS resource 1 is associated with one SRS port and one antenna port.

[0254] Figures 6a and 6b are schematic diagrams of the port configuration of SRS resources. In Figures 6a and 6b, the number of transmit antennas is 3 (shown as TX0, TX1, and TX2 in the figure), and the number of receive antennas is 4 (shown as AP0, AP1, AP2, and AP3 in the figure). As shown in Figure 6a, SRS resource 0 is sent to the network device via TX0, TX1, and TX2. The network device can estimate the downlink channel information corresponding to AP0, AP1, and AP2 of the terminal based on SRS resource 0. As shown in Figure 6b, SRS resource 1 is sent to the network device via TX2. The network device can estimate the downlink channel information corresponding to AP3 of the terminal based on SRS resource 1.

[0255] Port configuration case 2, when the first number is 3, and the second number is 4, the P SRS resources include: a first SRS resource with an SRS port number of 3 consisting of 1 second SRS resource with an SRS port number of 2 and 1 third SRS resource with an SRS port number of 1, and 1 third SRS resource with an SRS port number of 1.

[0256] In an embodiment of the present application, taking the port configuration of the SRS resources shown in Table 3 as an example, SRS resource 0 consists of 1 third SRS resource with an SRS port quantity of 1 and 1 second SRS resource with an SRS port quantity of 2, and SRS resource 1 is a third SRS resource with an SRS port quantity of 1.

[0257] For SRS resource 0, TX0 corresponding to the second SRS resource is associated with AP0, TX1 corresponding to the second SRS resource is associated with AP1, and TX2 corresponding to the third SRS resource is associated with AP2. It can be seen that SRS resource 0 is associated with 3 SRS ports and 3 antenna ports.

[0258] For SRS resource 1, TX2 is associated with AP3. As can be seen, SRS resource 1 is associated with one SRS port and one antenna port.

[0259] Port configuration situation 3: When the first number is 3 and the second number is 4, the P SRS resources include: 1 first SRS resource with an SRS port number of 3 configured by the fourth SRS resource with an SRS port number of 4, and 1 third SRS resource with an SRS port number of 1; 1 SRS port corresponding to the fourth SRS resource with an SRS port number of 4 is configured as unavailable.

[0260] In this embodiment of the present application, the P SRS resources include: a first SRS resource (SRS resource 0) and a second SRS resource (SRS resource 1). The first SRS resource is a first SRS resource with a number of SRS ports of 3 configured by a fourth SRS resource with a number of SRS ports of 4, and the second SRS resource is a third SRS resource with a number of SRS ports of 1.

[0261] For example, Table 4 is a schematic diagram of a port configuration of an SRS resource provided in an embodiment of the present application:

[0262] Table 4

[0263] As shown in Table 4, for SRS resource 0, TX0 corresponding to the fourth SRS resource is associated with AP0, TX1 corresponding to the fourth SRS resource is associated with AP1, TX2 corresponding to the fourth SRS resource is associated with AP2, and TX3 corresponding to the fourth SRS resource is configured as unavailable (not applied). It can be seen that SRS resource 0 is associated with three SRS ports and three antenna ports.

[0264] For SRS resource 1, TX0 is associated with AP 3. As can be seen, SRS resource 1 is associated with one SRS port and one antenna port.

[0265] Port configuration scenario 4: when the first quantity is 3 and the second quantity is 4, the P SRS resources include: 2 second SRS resources with the quantity of SRS ports being 2.

[0266] In the embodiment of the present application, the P SRS resources include: a first SRS resource (SRS resource 0) and a second SRS resource (SRS resource 1), wherein both the first SRS resource and the second SRS resource are second SRS resources with two SRS ports.

[0267] For example, Table 5 is a schematic diagram of a port configuration of an SRS resource provided in an embodiment of the present application:

[0268] Table 5

[0269] As shown in Table 5, for SRS resource 0, TX0 is associated with AP0 and TX1 is associated with AP1. It can be seen that SRS resource 0 is associated with 2 SRS ports and 2 antenna ports.

[0270] For SRS resource 1, TX1 is associated with AP2, and TX2 is associated with AP3. It can be seen that SRS resource 1 is associated with two SRS ports and two antenna ports.

[0271] Figures 7a and 7b are schematic diagrams of the port configuration of SRS resources. In Figures 7a and 7b, the number of transmit antennas is 3 (shown as TX0, TX1, and TX2 in the figure), and the number of receive antennas is 4 (shown as AP0, AP1, AP2, and AP3 in the figure). As shown in Figure 7a, SRS resource 0 is sent to the network device via TX0 and TX1. The network device can estimate the downlink channel information corresponding to AP0 and AP1 of the terminal based on SRS resource 0. As shown in Figure 7b, SRS resource 1 is sent to the network device via TX1 and TX2. The network device can estimate the downlink channel information corresponding to AP2 and AP3 of the terminal based on SRS resource 1.

[0272] Port configuration scenario 5: When the first number is 3 and the second number is 4, the P SRS resources include: 1 second SRS resource with 2 SRS ports and 2 third SRS resources with 1 SRS port.

[0273] In this embodiment of the present application, the P SRS resources include: a first SRS resource (SRS resource 0), a second SRS resource (SRS resource 1), and a third SRS resource (SRS resource 2). The first SRS resource is a second SRS resource having two SRS ports, and the second SRS resource and the third SRS resource are both third SRS resources having one SRS port.

[0274] For example, Table 6 is a schematic diagram of a port configuration of an SRS resource provided in an embodiment of the present application:

[0275] Table 6

[0276] As shown in Table 6, for SRS resource 0, TX0 is associated with AP0 and TX1 is associated with AP1. It can be seen that SRS resource 0 is associated with 2 SRS ports and 2 antenna ports.

[0277] For SRS resource 1, TX2 is associated with AP2. As can be seen, SRS resource 1 is associated with one SRS port and one antenna port.

[0278] For SRS resource 2, TX1 is associated with AP3. As can be seen, SRS resource 2 is associated with one SRS port and one antenna port.

[0279] Figures 8a, 8b, and 8c are schematic diagrams of the port configuration of SRS resources. In Figures 8a, 8b, and 8c, the number of transmitting antennas is 3 (shown as TX0, TX1, and TX2 in the figure), and the number of receiving antennas is 4 (shown as AP0, AP1, AP2, and AP3 in the figure). As shown in Figure 8a, SRS resource 0 is sent to the network device via TX0 and TX1. The network device can estimate the downlink channel information corresponding to AP0 and AP1 of the terminal based on SRS resource 0. As shown in Figure 8b, SRS resource 1 is sent to the network device via TX2. The network device can estimate the downlink channel information corresponding to AP2 of the terminal based on SRS resource 1. As shown in Figure 8c, SRS resource 2 is sent to the network device via TX1. The network device can estimate the downlink channel information corresponding to AP3 of the terminal based on SRS resource 2.

[0280] In some embodiments of the present application, the power scaling factor is used to adjust the linear value of the transmit power of the SRS resource corresponding to the power scaling factor to determine the actual value of the transmit power of the SRS resource.

[0281] In the embodiment of the present application, the power scaling factor is the ratio between the actual value of the transmission power of the SRS resource and the linear value of the transmission power of the SRS resource.

[0282] In the embodiment of the present application, the power scaling factor is used to reduce the actual transmit power value of the SRS resource based on the linear value of the transmit power of the SRS resource, thereby obtaining the actual transmit power value of the SRS resource. By adjusting the power scaling factor, the system can flexibly control the actual transmit power of the SRS resource.

[0283] It is understood that, on the one hand, the power scaling factor allows the system to dynamically adjust the transmit power of the SRS resource to adapt to different channel and system conditions, optimizing the power level of the SRS resource in different communication environments to ensure signal quality and system performance. On the other hand, adjusting the power scaling factor can also be used to save energy. When the system has strict power consumption requirements, the power of the SRS resource can be adjusted to balance the relationship between performance and power consumption.

[0284] In some embodiments of the present application, the power scaling factor corresponding to the SRS resource is related to the number of SRS ports and the number of antenna ports corresponding to the SRS resource.

[0285] In the embodiment of the present application, for different SRS resources, if the number of SRS ports and the number of antenna ports are different, the power scaling factors corresponding to the SRS resources may be different.

[0286] In some embodiments of the present application, power scaling factors of different SRS resources among the P SRS resources are the same or different.

[0287] In the embodiment of the present application, the power scaling factor of the SRS resource corresponding to each of the P SRS resources has the following two cases:

[0288] Case 1: The power scaling factors of different SRS resources among the P SRS resources are the same.

[0289] Exemplarily, the P SRS resources include: a first SRS resource, a second SRS resource, and a third SRS resource. The power scaling factors of the first SRS resource, the second SRS resource, and the third SRS resource are all 1.

[0290] It should be understood that when different SRS resources in the P SRS resource sets have the same power scaling factor, it means that the SRS resources in these resource sets are consistent in terms of power adjustment.

[0291] Case 2: different SRS resources among the P SRS resources have different power scaling factors.

[0292] In this embodiment of the present application, power scaling factors of at least two SRS resources among the P SRS resources are different.

[0293] Exemplarily, the P SRS resources include: a first SRS resource, a second SRS resource, and a third SRS resource. The power scaling factor of the first SRS resource is 1, the power scaling factor of the second SRS resource is 1 / 2, and the power scaling factor of the third SRS resource is 1 / 4. Alternatively, the power scaling factors of the first SRS resource and the second SRS resource are both 1, and the power scaling factor of the third SRS resource is 1 / 2.

[0294] It should be understood that by adjusting the power scaling factor, the system can ensure that different SRS resources have similar power levels when transmitted, thereby avoiding unnecessary imbalances at the receiving end (network equipment). In addition, by ensuring that the SRS signals from different antennas have similar power, the system can better utilize the antenna resources in a multi-antenna system, achieving better signal transmission and reception. Maintaining the same transmit power for different SRS resources also helps reduce potential interference in the network, thereby further improving the performance of the communication system.

[0295] In the embodiment of the present application, the port configuration of the second SRS resource with a port number of 2 has the following three modes:

[0296] Mode 1: The second SRS resource is an SRS resource with 2 SRS ports;

[0297] Mode 2: The second SRS resource may be an SRS resource with a port number of 2 consisting of two third SRS resources with a SRS port number of 1;

[0298] Method 3: The second SRS resource can be an SRS resource with a port number of 2 configured by a first SRS resource with a port number of 3; wherein, the 1 SRS port corresponding to the first SRS resource is configured as unavailable; or, the 1 unavailable SRS port corresponding to the first SRS resource is a predefined SRS port; or, the 1 unavailable SRS port corresponding to the first SRS resource is an SRS port constrained in the protocol.

[0299] In the embodiment of the present application, the port configuration of the first SRS resource with a port number of 3 has the following three modes:

[0300] Mode 1: The first SRS resource is an SRS resource with 3 SRS ports;

[0301] Mode 2: The first SRS resource may be an SRS resource with a port number of 3, which is composed of a third SRS resource with a SRS port number of 1 and a second SRS resource with a SRS port number of 2;

[0302] Mode 3: The first SRS resource may be an SRS resource with a port number of 3 configured by a fourth SRS resource with a port number of 4, wherein the SRS port corresponding to the fourth SRS resource is configured as unavailable; or, the unavailable SRS port corresponding to the fourth SRS resource is a predefined SRS port; or, the unavailable SRS port corresponding to the fourth SRS resource is an SRS port constrained in the protocol;

[0303] Mode 4: The first SRS resource may be an SRS resource with a port number of 3 consisting of 3 third SRS resources with a SRS port number of 1;

[0304] Method 5: The first SRS resource can be an SRS resource with a port number of 3, which is composed of 2 second SRS resources with a SRS port number of 2; wherein, 1 SRS port corresponding to 1 second SRS resource is configured as unavailable; or, the 1 unavailable SRS port corresponding to the second SRS resource is a predefined SRS port; or, the 1 unavailable SRS port corresponding to the second SRS resource is an SRS port constrained in the protocol.

[0305] The following describes two configurations of the power scaling factor in a 3T8R scenario (ie, the first number is 3 and the second number is 8).

[0306] Configuration case 1 of the power scaling factor: the power scaling factor corresponding to the second SRS resource with 2 SRS ports is 2 / 3, and the power scaling factor corresponding to the first SRS resource with 3 SRS ports is 1.

[0307] For example, taking the port configuration of SRS resources shown in Table 1 as an example, the power scaling factor corresponding to STS resource 0 is 2 / 3, the power scaling factor corresponding to STS resource 1 is 1, and the power scaling factor corresponding to STS resource 2 is 2 / 3. In this way, assuming that the linear value of the transmission power is P SRS The actual transmission power values ​​corresponding to STS resource 0 and STS resource 1 are both P SRS The actual transmission power corresponding to STS resource 3 is 2 / 3×P SRS Furthermore, the transmit power corresponding to each SRS port in STS resource 0 and STS resource 1 is 1 / 3×P SRS , the transmission power corresponding to each SRS port in STS resource 3 is also 1 / 3×P SRS .

[0308] In configuration case 2 of the power scaling factor, the power scaling factor corresponding to the second SRS resource with 2 SRS ports is 1 / 2, and the power scaling factor corresponding to the fourth SRS resource with 4 SRS ports is 3 / 4.

[0309] For example, taking the port configuration of SRS resources shown in Table 2 as an example, the power scaling factor corresponding to STS resource 0 is 3 / 4, the power scaling factor corresponding to STS resource 1 is 3 / 4, and the power scaling factor corresponding to STS resource 2 is 1 / 2. In this way, assuming that the linear value of the transmission power is P SRS The actual transmission power values ​​corresponding to STS resource 0 and STS resource 1 are both 3 / 4×P SRS, the actual transmission power corresponding to STS resource 2 is 1 / 2×P SRS Furthermore, the transmission power corresponding to each SRS port in STS resource 0 and STS resource 1 is 1 / 4×P SRS , the transmission power corresponding to each SRS port in STS resource 2 is also 1 / 4×P SRS .

[0310] The following describes four configurations of the power scaling factor in a 3T8R scenario (ie, the first number is 3 and the second number is 4).

[0311] Configuration case 1 of the power scaling factor: the power scaling factor corresponding to the first SRS resource with 3 SRS ports is 1, and the power scaling factor corresponding to the third SRS resource with 1 SRS port is 1 / 3.

[0312] For example, taking the port configuration of SRS resources shown in Table 3 as an example, the power scaling factor corresponding to STS resource 0 is 1, and the power scaling factor corresponding to STS resource 1 is 1 / 3. SRS , the actual transmission power value corresponding to STS resource 0 is P SRS , the actual transmission power corresponding to STS resource 1 is 1 / 3×P SRS Furthermore, the transmission power corresponding to each SRS port in STS resource 0 is 1 / 3×P SRS , the transmission power corresponding to each SRS port in STS resource 1 is also 1 / 3×P SRS .

[0313] Configuration case 2 of the power scaling factor: the power scaling factor corresponding to the first SRS resource with 3 SRS ports is 3 / 4, and the power scaling factor corresponding to the third SRS resource with 1 SRS port is 1 / 4.

[0314] For example, taking the port configuration of SRS resources shown in Table 4 as an example, the power scaling factor corresponding to STS resource 0 is 3 / 4, and the power scaling factor corresponding to STS resource 1 is 1 / 4. In this way, assuming that the linear value of the transmission power is P SRS The actual transmission power value corresponding to STS resource 0 is 3 / 4×P SRS The actual transmission power corresponding to STS resource 1 is 1 / 4×P SRS Furthermore, the transmission power corresponding to each SRS port in STS resource 0 is 1 / 4×P SRS , the transmission power corresponding to each SRS port in STS resource 1 is also 1 / 4×P SRS .

[0315] Configuration case 3 of the power scaling factor: the power scaling factor corresponding to the second SRS resource with 2 SRS ports is 1.

[0316] For example, taking the port configuration of the SRS resource shown in Table 5 as an example, the power scaling factor corresponding to STS resource 0 and STS resource 1 is 1. Thus, assuming that the linear value of the transmission power is P SRS , the actual transmission power corresponding to STS resource 0 and STS resource 1 is P SRS Furthermore, the transmission power corresponding to each SRS port in STS resource 0 and STS resource 1 is 1 / 2×P SRS .

[0317] Configuration case 4 of the power scaling factor: the power scaling factor corresponding to the second SRS resource with 2 SRS ports is 1, and the power scaling factor corresponding to the third SRS resource with 1 SRS port is 1 / 2.

[0318] For example, taking the port configuration of SRS resources shown in Table 6 as an example, the power scaling factor corresponding to STS resource 0 is 1, and the power scaling factors corresponding to STS resource 1 and STS resource 2 are 1 / 2. In this way, assuming that the linear value of the transmission power is P SRS , the actual transmission power value corresponding to STS resource 0 is P SRS The actual transmission power values ​​corresponding to STS resource 1 and STS resource 2 are both 1 / 2×P SRS Furthermore, the transmission power corresponding to each SRS port of STS resource 0 is 1 / 2×P SRS The transmission power corresponding to each SRS port of STS resource 1 and STS resource 2 is 1 / 2×P SRS .

[0319] In some embodiments of the present application, the terminal sends SRS antenna switching capability to the network device; wherein the SRS antenna switching capability includes one or more groups of antenna switching capabilities supported by the terminal; the antenna switching capability includes a first quantity and a second quantity supported by the terminal.

[0320] In the embodiment of the present application, after the terminal sends the SRS antenna switching capability to the network device, the network device receives the SRS antenna switching capability sent by the terminal accordingly.

[0321] In the embodiment of the present application, the SRS antenna switching capability is also referred to as user equipment capability (UE capability).

[0322] In the embodiment of the present application, antenna switching capability refers to the ability of a terminal to support antenna switching related to SRS resources in a communication system. This capability information is usually sent by the terminal to a network device via signaling to inform the network device of the antenna switching configuration it supports.

[0323] In the embodiments of the present application, the first number represents the number of SRS transmit antennas supported by the terminal for simultaneous use, reflecting the diversity of the terminal's transmit antennas, i.e., the simultaneous use of multiple transmit antennas for communication. The second number represents the number of receive antennas supported by the terminal for simultaneous use, indicating that the terminal has the ability to simultaneously receive signals from multiple antennas for more efficient channel estimation and improved communication performance. In addition, depending on the specifications of the communication system, the SRS antenna switching capability may also include other parameters, such as the types of SRS resource sets supported, the frequency and bandwidth of the SRS configuration, etc., which are not limited in the embodiments of the present application.

[0324] It is understood that by sending the SRS antenna switching capability to the network device, the terminal can provide the network device with information about its antenna switching technical capabilities. This is very helpful for the network device to optimize and make decisions in resource scheduling, beamforming, Multi-User Multiple Input Multiple Output (MU-MIMO), etc.

[0325] In some embodiments of the present application, the SRS antenna switching capability includes: a first antenna switching capability; the first antenna switching capability indicates a set of first quantity and second quantity supported by the terminal.

[0326] In this embodiment of the present application, the first antenna switching capability includes one or more of the following:

[0327] A first switching capability (t1r2), used to indicate that the number of transmit antennas of the terminal (the first number) is 1 and the number of receive antennas of the terminal (the second number) is 2;

[0328] The second switching capability (t1r4) is used to indicate that the number of transmit antennas of the terminal is 1 and the number of receive antennas of the terminal is 4;

[0329] The third switching capability (t2r4) is used to indicate that the number of transmit antennas of the terminal is 2 and the number of receive antennas of the terminal is 4;

[0330] a fourth switching capability (t1r1), used to indicate that the number of transmit antennas of the terminal is 1 and the number of receive antennas of the terminal is 1;

[0331] a fifth switching capability (t2r2), used to indicate that the number of transmit antennas of the terminal is 2 and the number of receive antennas of the terminal is 2;

[0332] a sixth switching capability (t4r4), used to indicate that the number of transmit antennas of the terminal is 4 and the number of receive antennas of the terminal is 4;

[0333] The seventh switching capability (t6r8) is used to indicate that the number of transmit antennas of the terminal is 6 and the number of receive antennas of the terminal is 8;

[0334] an eighth switching capability (t3r4), used to indicate that the number of transmit antennas of the terminal is 3 and the number of receive antennas of the terminal is 4;

[0335] The ninth switching capability (t3r8) is used to indicate that the number of transmitting antennas of the terminal is 3 and the number of receiving antennas of the terminal is 8.

[0336] In this embodiment of the present application, the first antenna switching capability is carried in the antenna switching field of the SRS antenna switching capability. The antenna switching field can be the srs-TxSwitch field of the user equipment capability message element (Information Element, IE). The antenna switching field can also be a custom field. This embodiment of the present application does not impose any restrictions on this.

[0337] For example, when the antenna switching field is carried in the srs-TxSwitch field, it can be expressed as:

[0338] For example, when the antenna switching field is carried in a custom field, it can be expressed as:

[0339] In some embodiments of the present application, the SRS antenna switching capability also includes: the number of uplink transmission layers; the uplink transmission layer number is carried in the uplink MIMO layer number field in the SRS antenna switching capability; the uplink MIMO layer number field indicates the number of transmission layers of the transmitting antenna supported by the terminal.

[0340] In the embodiments of this application, the "uplink transmission layer number" refers to the number of transmission layers simultaneously supported by the terminal on the uplink, that is, the number of uplink MIMO layers that the terminal can use. The "uplink transmission layer number" indicates how many transmission layers the terminal can use for data transmission at the same time. In other words, the "uplink transmission layer number" indicates the number of transmission layers supported by the terminal's transmit antennas. Through this field, the terminal can provide network equipment with its uplink MIMO technical capabilities.

[0341] As you can understand, the number of uplink transmission layers allows network equipment to better understand the communication capabilities of terminals, especially when using multiple antennas, helping to optimize system resource allocation and improve communication performance. Based on this information, network equipment can make adjustments to meet the communication needs of terminals and utilize multiple antennas to improve communication efficiency when needed.

[0342] In this embodiment of the present application, the transmission layer number information includes one or more of the following:

[0343] The first transmission layer number (oneLayer) is used to indicate that the terminal's uplink transmission layer number is 1;

[0344] The second transmission layer number (twoLayers) is used to indicate that the terminal's uplink transmission layer number is 2;

[0345] The third transmission layer number (fourLayers) is used to indicate that the number of uplink transmission layers of the terminal is 4;

[0346] The fourth transmission layer number (threeLayers) is used to indicate that the number of uplink transmission layers of the terminal is 3;

[0347] The fifth transmission layer number (sixLayers) is used to indicate that the number of uplink transmission layers of the terminal is 6;

[0348] The sixth transmission layer number (eightLayers) is used to indicate that the number of uplink transmission layers of the terminal is 8.

[0349] For example, when the number of uplink transmission layers is carried in the uplink MIMO layer number field, it can be expressed as:

[0350] MIMO-LayersUL::=ENUMERATED{oneLayer,twoLayers,fourLayers,threeLayers,sixLayers,eightLayers}

[0351] Alternatively, it can be expressed as:

[0352] MIMO-LayersUL-v18::=ENUMERATED{threeLayers,sixLayers,eightLayers}

[0353] In some embodiments of the present application, the SRS antenna switching capability further includes: a guard interval between two adjacent SRS resources; the value of the guard interval satisfies any of the following:

[0354] The value of the guard interval is less than or equal to N symbols; where N is a positive integer greater than or equal to 1;

[0355] The value of the guard interval is less than or equal to Q microseconds, where Q is a positive number.

[0356] In the embodiment of the present application, the SRS antenna switching capability also includes a guard interval between two adjacent SRS resources. This guard interval is to ensure that there is sufficient space between adjacent SRS resources to prevent interference.

[0357] In the embodiment of the present application, the value of the guard interval is less than or equal to N symbols, indicating that the time interval between two adjacent SRS resources is less than or equal to the duration of N symbols. The value of the guard interval is less than or equal to Q microseconds, indicating that the time interval between two adjacent SRS resources is less than or equal to Q microseconds.

[0358] For example, the value of the guard interval may be: 0 symbol, 1 symbol, 2 symbols. Alternatively, the value of the guard interval may be: 0 us, 100 us.

[0359] Exemplarily, the guard interval between two adjacent SRS resources is carried in the SRS antenna switching capability and can be expressed as:

[0360] uplinkTxSwitchingPeriod-r18ENUMERATED{n0us,n100us,n35us,n140us,n210us}

[0361] It is understandable that the guard interval helps to achieve time domain isolation between different SRS resources on the same frequency band, thereby reducing interference between adjacent resources. Network devices can use this information to adjust the time domain configuration of SRS resources to achieve better communication effects.

[0362] In some embodiments of the present application, the guard interval is related to the type of SRS antenna switching supported by the terminal in a preset frequency band.

[0363] In an embodiment of the present application, the setting of the protection interval can be determined based on the type of SRS antenna switching supported by the terminal in a preset frequency band, and different antenna switching types may require different protection intervals. For example, if the terminal supports periodic SRS antenna switching, the setting of the protection interval may need to consider the periodic transmission of SRS resources to ensure that there is sufficient interval between adjacent periodic SRS resources to avoid interference. For non-periodic SRS antenna switching, the terminal may require a shorter protection interval to maintain sufficient intervals in different time slices to prevent interference. Semi-continuous SRS antenna switching may be between periodic and non-periodic, and the setting of the protection interval may depend to a certain extent on the negotiation between the terminal and the network device.

[0364] It should be understood that different types of SRS antenna switching are suitable for different communication scenarios. For example, periodic SRS antenna switching is suitable for static or slow-moving terminals, while aperiodic SRS antenna switching is suitable for high-speed mobile terminals. By adjusting the guard interval, it can better adapt to different antenna switching scenarios and improve the applicability and flexibility of the system.

[0365] It is understandable that, on the one hand, by setting an appropriate guard interval based on the SRS antenna switching type supported by the terminal, time-domain interference between adjacent SRS resources can be effectively reduced, helping to ensure that different SRS resources are sufficiently separated in time, reducing their mutual impact and improving overall system performance. On the other hand, appropriately setting the guard interval can improve the system's robustness to interference. In complex communication environments, by considering the protection between different SRS resources, the system can better cope with the presence of interference sources and maintain communication reliability and stability. In general, by considering appropriate guard intervals in SRS antenna switching, resource allocation in the time domain can be effectively managed, interference levels can be reduced, and system performance and user experience can be improved.

[0366] In some embodiments of the present application, the SRS antenna switching capability further includes: a second antenna switching capability; the second antenna switching capability indicates multiple groups of first quantities and second quantities supported by the terminal for antenna switching fallback.

[0367] In the embodiment of the present application, the SRS antenna switching capability supported by the terminal includes a combination of multiple groups of transmitting antennas and receiving antennas supported by the terminal.

[0368] In this embodiment of the present application, when the number of transmit antennas (first number) supported by the terminal is 6 and the number of receive antennas (second number) is 8, the second antenna switching capability includes one or more of the following:

[0369] The tenth switching capability ({6T8R, 4T8R, 3T8R, 3T4R, 2T4R, 1T2R}), the tenth switching capability includes: a first switching state, a second switching state, a third switching state, a fourth switching state, a fifth switching state and a sixth switching state; wherein, the first switching state indicates that the number of transmitting antennas of the terminal is 6 and the number of receiving antennas is 8; the second switching state indicates that the number of transmitting antennas of the terminal is 4 and the number of receiving antennas is 8; the third switching state indicates that the number of transmitting antennas of the terminal is 3 and the number of receiving antennas is 8; the fourth switching state indicates that the number of transmitting antennas of the terminal is 3 and the number of receiving antennas is 4; the fifth switching state indicates that the number of transmitting antennas of the terminal is 2 and the number of receiving antennas is 4; the sixth switching state indicates that the number of transmitting antennas of the terminal is 1 and the number of receiving antennas is 2.

[0370] The eleventh switching capability ({6T8R, 2T4R, 2T2R, 1T2R, 1T1R}), the eleventh switching capability includes: the first switching state, the fifth switching state, the seventh switching state, the sixth switching state and the eighth switching state; wherein the seventh switching state indicates that the number of transmitting antennas of the terminal is 2 and the number of receiving antennas is 2; the eighth switching state indicates that the number of transmitting antennas of the terminal is 2 and the number of receiving antennas is 2.

[0371] The twelfth switching capability ({6T8R, 2T4R, 1T4R, 2T2R, 1T2R, 1T1R}), the twelfth switching capability includes: the first switching state, the fifth switching state, the ninth switching state, the seventh switching state, the sixth switching state and the eighth switching state; wherein the ninth switching state indicates that the number of transmitting antennas of the terminal is 1 and the number of receiving antennas is 4.

[0372] In the embodiment of the present application, when the number of transmit antennas supported by the terminal is 6 and the number of receive antennas is 8, the second antenna switching capability (UE capability for 6T8R SRS antenna switching) can be expressed as follows:

[0373] It should be noted that 1T2R-2T4R-3T4R-3T8R-4T8R-6T8R in the structure can be replaced.

[0374] In this embodiment of the present application, when the number of transmit antennas supported by the terminal is 3 and the number of receive antennas supported is 4, the second antenna switching capability includes one or more of the following:

[0375] A thirteenth switching capability ({3T4R, 2T4R, 1T2R}), the thirteenth switching capability includes: a fourth switching state, a fifth switching state and a sixth switching state.

[0376] A fourteenth switching capability ({3T4R, 2T4R, 1T2R, 1T1R}), the fourteenth switching capability includes: a fourth switching state, a fifth switching state, a sixth switching state and an eighth switching state.

[0377] In the embodiment of the present application, when the number of transmit antennas supported by the terminal is 3 and the number of receive antennas supported is 4, the second antenna switching capability (UE capability for SRS antenna switching) can be represented by the structure as follows:

[0378] It should be noted that 1T2R-2T4R-3T4R in the structure can be replaced by {3T4R, 2T4R, 1T2R, 1T1R}.

[0379] In this embodiment of the present application, when the number of transmit antennas supported by the terminal is 3 and the number of receive antennas supported is 8, the second antenna switching capability includes one or more of the following:

[0380] A fifteenth switching capability ({3T8R, 3T4R, 2T4R, 1T2R}), the fifteenth switching capability includes: a third switching state, a fourth switching state, a fifth switching state and a sixth switching state.

[0381] A sixteenth switching capability ({3T8R, 3T4R, 2T4R, 1T2R, 1T1R}), the sixteenth switching capability includes: a third switching state, a fourth switching state, a fifth switching state, a sixth switching state and an eighth switching state.

[0382] In the embodiment of the present application, when the number of transmit antennas supported by the terminal is 3 and the number of receive antennas supported is 8, the second antenna switching capability (UE capability for SRS antenna switching) can be represented by the structure as follows:

[0383] It should be noted that 1T2R-2T4R-3T4R-3T8R in the structure can be replaced by {3T8R, 3T4R, 2T4R, 1T2R, 1T1R}.

[0384] In some embodiments of the present application, the influencing factors of SRS configuration information include the following three situations:

[0385] Case 1: The SRS configuration information is related to a preset frequency band.

[0386] In an embodiment of the present application, for a specific frequency band, the network device may need to configure corresponding SRS parameters to adapt to the communication environment of the frequency band. For example, different frequency bands may have different bandwidth allocations, so the network device may need to configure the bandwidth of the SRS resource based on the bandwidth characteristics of the frequency band. The interference conditions between frequency bands may be different, so the network device may need to configure the protection interval between SRS resources based on the interference characteristics of the frequency band. In a specific frequency band, the requirements for antenna switching may be different. The network device can configure the parameters related to antenna switching based on the characteristics of the frequency band to improve the performance and robustness of the system.

[0387] It should be understood that the association of SRS configuration information with pre-set frequency bands helps network equipment better adapt to communication environments in different frequency bands, improving system flexibility and performance. By using customized SRS configurations in different frequency bands, spectrum resources can be more efficiently utilized, interference levels can be reduced, and overall system performance can be improved.

[0388] Case 2: The SRS configuration information is related to the antenna switching capability supported by the terminal.

[0389] In an embodiment of the present application, SRS antenna switching configuration information is determined based on the SRS antenna switching capability supported by the user equipment. For example, the number of SRS resource sets to configure is determined based on user equipment support and network requirements. The number of SRS resources contained in each SRS resource set is determined based on user equipment support and network requirements. The SRS port configuration corresponding to each SRS resource is determined based on the number of SRS ports supported by the user equipment.

[0390] It should be noted that if the configuration information for SRS antenna switching is associated with a specific frequency band, the network device may also consider the current communication frequency band to customize the SRS configuration to adapt to the characteristics of the frequency band.

[0391] It should be understood that by configuring SRS configuration information according to the SRS antenna switching capability supported by the user equipment, it is possible to ensure that the system's antenna switching performance matches the actual capabilities of the user equipment, which helps improve the efficiency and performance of the communication system while ensuring that the user equipment can operate normally.

[0392] Case 3: The SRS configuration information is related to the antenna switching capability supported by the terminal, and the antenna switching capability is related to the preset frequency band.

[0393] In the embodiments of the present application, different frequency bands may have different communication characteristics and requirements. Therefore, the SRS antenna switching capability supported by the user equipment may vary with the frequency band. For example, in one frequency band, the user equipment may support a first antenna switching capability, while in another frequency band, it may support a second antenna switching capability.

[0394] In an embodiment of the present application, the user equipment configures specific information of SRS antenna switching according to the supported SRS antenna switching capability, the requirements of a specific frequency band, and corresponding parameters, including the number of SRS resource sets, the number of SRS resources included in each SRS resource set, the SRS ports included in the SRS resources, etc.

[0395] It can be understood that by configuring different SRS antenna switching capabilities in different frequency bands, the system can better adapt to the communication characteristics of different frequency bands, helping to optimize system performance and improve the system's adaptability in different frequency bands. The SRS antenna switching capabilities supported by terminals may vary in different frequency bands. By associating different antenna switching capabilities based on frequency bands, the system can fully leverage the flexibility of user devices and provide better communication services. Based on the communication requirements of specific frequency bands, the configuration of SRS antenna switching capabilities can optimize system performance. This involves more efficient use of antenna resources, reducing interference, and improving communication reliability and coverage. Overall, by dynamically configuring SRS antenna switching parameters, the system becomes more adaptable, flexible, and has superior performance to cope with changes in different frequency bands and terminal capabilities.

[0396] The method provided in the embodiment of the present application is described in detail below in conjunction with specific application scenarios.

[0397] In the related art, the NR system supports the base station side to obtain downlink channel information by measuring SRS using channel reciprocity. In order to support UEs with fewer transmitting antennas than receiving antennas to obtain downlink information through channel reciprocity, SRS is sent by antenna switching. For the scenario where the number of transmitting antennas is 3 ports during antenna switching, this application implements 3T8R and 3T4R antenna switching, and ensures that the port power of the SRS resources used for antenna switching is equal through the power scaling factor. The method provided in the embodiment of the present application is described in detail below with reference to several specific embodiments.

[0398] Example 1: The number of transmitting antennas (equivalent to the first number) is 3, and the number of receiving antennas (equivalent to the second number) is 8

[0399] In an embodiment of the present application, the terminal device sends multiple SRS resources according to the configuration information of the SRS antenna switching (equivalent to the SRS configuration information) and the power scaling factor.

[0400] In an embodiment of the present application, when the configuration information for SRS antenna switching includes M1 SRS resource sets; each SRS resource set includes the same or different number of SRS resources; or, in another description method, P1 SRS resources are used for antenna switching, and the P1 resources belong to one or more resource sets in the M1 SRS resource sets, different SRS resources occupy different time domain positions.

[0401] In an embodiment of the present application, when M1 is greater than 1, the type of each resource set can be configured as 'periodic', 'non-periodic' or 'semi-persistent', and the types of the resource sets are the same, for example, the types of M1 resource sets are all 'non-periodic'; or, the types of the resource sets are different, for example, the types of M1 resource sets are 'periodic', 'semi-persistent', and 'non-periodic' respectively; or, the types of two resource sets are the same, for example, M1=3, the types of two resource sets are 'semi-persistent', and the type of one resource set is 'periodic'.

[0402] In the embodiment of the present application, different time domain locations include different time slots and / or different symbols where each resource is located. Resources in different SRS resource sets are located in different time slots, or different SRS resources in the same SRS resource set are located in different symbols.

[0403] In the embodiment of the present application, different SRS resources are associated with different UE antenna ports.

[0404] In this embodiment of the present application, when the number of transmit antennas is 3 and the number of receive antennas is 8, i.e., 3T8R, M1 = 1, one SRS resource set includes P1 = 3 SRS resources. Each SRS resource is transmitted in different symbols in the same time slot. The three SRS resources are associated with different UE antenna ports, and the total number of associated UE antenna ports is 8.

[0405] In the embodiment of the present application, when the number of transmitting antennas is 3 and the number of receiving antennas is 8, the port configuration is as follows:

[0406] Example 1: Referring to Table 1 above, an SRS resource can be configured with three ports. The SRS resource with index 0 includes three SRS ports associated with three UE antenna ports, the SRS resource with index 1 includes three SRS ports associated with three UE antenna ports, and the SRS resource with index 2 includes two SRS ports associated with two UE antenna ports. This satisfies the following configuration: TX0, 1, and 2 are SRS ports, and AP0 to 7 are UE antenna ports.

[0407] Example 2: Referring to Table 2 above, existing SRS resources can only be configured as 1-port, 2-port, or 4-port. A 3-port SRS resource is created by configuring a 4-port SRS resource. The protocol specifies that one of the 4-port SRS resources should not be used, and can be either the port with the highest index or the port with the lowest index. Of the SRS resources used for antenna switching, two 3-port SRS resources are derived from a 4-port SRS resource, and one SRS resource is a 2-port SRS resource.

[0408] Example 3: Similar to Example 2, a 3-port SRS resource is configured by configuring a 1-port SRS resource and a 2-port SRS resource. The SRS resources used for antenna switching include two 3-port SRS resources obtained by combining the 1-port and 2-port SRS resources, and one SRS resource is a 2-port SRS resource.

[0409] It should be noted that the advantage of Examples 1, 2, and 3 is that antenna switching can be completed within a slot. The disadvantage of Examples 1, 2, and 3 is that the power of the SRS ports used for antenna switching is inconsistent, so a power scaling factor is used to adjust the power so that the power of each port remains consistent.

[0410] In this embodiment of the present application, at least two of the P1 SRS resources have different power scaling factors. The power scaling factor is the ratio of the actual transmit power of the SRS resource to the calculated linear value of the SRS power. The transmit power of each SRS port is the actual transmit power of the SRS resource evenly distributed to each SRS port. The power scaling factor is agreed upon by the protocol or configured through higher-level parameters, for example, together with the higher-level parameters of the SRS resource set used for antenna switching.

[0411] In the embodiment of the present application, for Example 1 and Example 2, the power scaling factor corresponding to one SRS resource is 2 / 3, and the power scaling factor corresponding to the other SRS resources is 1. Specifically, the transmit power of each port corresponding to the 3-port SRS resource is 1 / 3*P SRS , the linear value of the transmission power of SRS resource is P SRS , the transmission power of each port corresponding to the 2-port SRS resource is also 1 / 3*P SRS , the total transmission power corresponding to the 2-port SRS resource is 2 / 3*P SRS .

[0412] In the embodiment of the present application, for Example 2, a 3-port SRS resource is obtained from a 4-port SRS resource. The power scaling factor corresponding to one of the SRS resources is 1 / 2, and the power scaling factor corresponding to the other SRS resources is 3 / 4. Specifically, the transmit power of each port corresponding to the 3-port SRS resource is 1 / 4*P SRS , the total transmission power of the 3-port SRS resource is 3 / 4*P SRS , the transmission power of each port corresponding to the 2-port SRS resource is also 1 / 4*P SRS , the total transmission power corresponding to the 2-port SRS resource is 1 / 2*P SRS .

[0413] In the embodiment of the present application, for Example 3, a 3-port SRS resource is obtained from a 1-port SRS resource and a 2-port SRS resource. The power scaling factor corresponding to one of the SRS resources is 2 / 3, and the power scaling factor corresponding to the other SRS resources is 1. Specifically, the transmit power of each port corresponding to the 3-port SRS resource is 1 / 3*P SRS , the total transmission power of the 3-port SRS resource is P SRS , the transmission power of each port corresponding to the 2-port SRS resource is also 1 / 3*P SRS , the total transmission power corresponding to the 2-port SRS resource is 2 / 3*P SRS .

[0414] Example 2: The number of transmitting antennas (equivalent to the first number) is 3, and the number of receiving antennas (equivalent to the second number) is 4

[0415] In this embodiment of the present application, when the number of transmit antennas is 3 and the number of receive antennas is 4, i.e., 3T4R, M1 = 1, one SRS resource set includes P1 = 2 SRS resources. Each SRS resource is transmitted in different symbols in the same time slot. The two SRS resources are associated with different UE antenna ports, and the total number of associated UE antenna ports is 4.

[0416] In the embodiment of the present application, when the number of transmitting antennas is 3 and the number of receiving antennas is 4, the port configuration is as follows:

[0417] Example 4: See Table 3. TX0, 1, and 2 are SRS ports, and AP0 through 3 are UE antenna ports. SRS resources can be configured with three ports. The SRS resource with index 0 includes three SRS ports associated with three UE antenna ports, and the SRS resource with index 1 includes one SRS port associated with one UE antenna port. A three-port SRS resource can be configured directly, composed of a one-port and a two-port SRS resource, or derived from a four-port SRS resource.

[0418] It should be noted that the advantage of Example 4 is that antenna switching can be completed within one slot. The disadvantage of Example 4 is that the port powers of resources within one resource set are different.

[0419] Example 5: See Table 5. TX0, 1, and 2 are SRS ports, and AP0 through 3 are UE antenna ports. SRS resources are all configured with two ports. The SRS resource with index 0 includes two SRS ports associated with two UE antenna ports, and the SRS resource with index 1 includes two SRS ports associated with two UE antenna ports.

[0420] It should be noted that the advantages of Example 5 are that antenna switching can be completed within one slot, and the port powers of resources within one resource set may be the same. The disadvantage of Example 5 is that the port powers of resources within one resource set may be different.

[0421] In this embodiment of the present application, when the number of transmit antennas is 3 and the number of receive antennas is 4, i.e., 3T4R, M1 = 1, one SRS resource set includes P1 = 3 SRS resources. Each SRS resource is transmitted in different symbols in the same time slot. The three SRS resources are associated with different UE antenna ports, and the total number of associated UE antenna ports is 4.

[0422] Example 6: See Table 6. TX0, 1, and 2 are SRS ports, and AP0 through 3 are UE antenna ports. SRS resources are configured as 2 ports and 1 port. The SRS resource with index 0 includes 2 SRS ports associated with 2 UE antenna ports, the SRS resource with index 1 includes 1 SRS port associated with 1 UE antenna port, and the SRS resource with index 2 includes 1 SRS port associated with 1 UE antenna port.

[0423] It should be noted that the advantage of Example 6 is that antenna switching can be completed within one slot. The disadvantage of Example 6 is that the port power of resources within one resource set is different.

[0424] In this embodiment of the present application, at least two of the P1 SRS resources have different power scaling factors from the other SRS resources. The power scaling factor is the ratio of the actual transmit power of the SRS resource to the calculated linear value of the SRS power, and the transmit power of each SRS port is the actual transmit power of the SRS resource evenly distributed to each SRS port.

[0425] In the embodiment of the present application, for the scenario of directly configuring 3-port SRS in Example 4, or composing 3-port SRS by 1-port SRS and 2-port SRS, the power scaling factor corresponding to the 3-port SRS resource is 1, and the power scaling factor corresponding to the 1-port SRS resource is 1 / 3. Specifically, the transmit power of each port corresponding to the 3-port SRS resource is 1 / 3*P SRS , the linear value of the transmission power of SRS resource is P SRS , the transmission power of each port corresponding to 1-port SRS resource is also 1 / 3*P SRS , the total transmission power is 1 / 3*P SRS .

[0426] In the embodiment of the present application, for the scenario of obtaining a 3-port SRS from a 4-port SRS in Example 4, the power scaling factor corresponding to the 3-port SRS resource is 3 / 4, and the power scaling factor corresponding to the 1-port SRS resource is 1 / 4. Specifically, the transmit power of each port corresponding to the 3-port SRS resource is 1 / 4*P SRS , the linear value of the transmission power of SRS resource is P SRS , the transmission power of the 3-port SRS resource is 3 / 4*P SRS , the transmission power of each port corresponding to 1-port SRS resource is also 1 / 4*P SRS , the total transmission power is 1 / 4*P SRS .

[0427] In the embodiment of the present application, for Example 5, each resource is a 2-port SRS resource, and the power scaling factors corresponding to the two SRS resources are both 1. Specifically, the transmit power of each port corresponding to the 2-port SRS resource is 1 / 2*P SRS , the total transmission power corresponding to the 2-port SRS resource is P SRS .

[0428] In the embodiment of the present application, for Example 6, the power scaling factor of the 2-port SRS resource is 1, and the power scaling factor of the 1-port SRS resource is 1 / 2. Specifically, the transmission power of each port corresponding to the 2-port SRS resource is 1 / 2*P SRS , the linear value of the transmission power of SRS resource is P SRS , the transmission power of 1-port SRS resource is 1 / 2*P SRS , the total transmission power is 1 / 2*P SRS For example, the scenario described in Example 6 above is applied.

[0429] In the embodiment of the present application, the power scaling factor can ensure that the power corresponding to the port corresponding to each SRS resource is equal, which is beneficial to the accuracy of obtaining downlink channel information.

[0430] Example 3

[0431] In an embodiment of the present application, the principle is to use multiple SRS resources for antenna switching to ensure that the power allocated to the SRS port in each SRS resource is the same, and the power scaling factor of each SRS resource may not be exactly the same, that is, the linear power value is the same, and the actual power is the product of the power scaling factor and the linear power value.

[0432] In an embodiment of the present application, multiple SRS resources belong to the same SRS resource set, and the power scaling factors of the multiple SRS resources included in one SRS resource set may not be exactly the same; the multiple SRS resources are sent in different symbols of the same time slot.

[0433] In this embodiment of the present application, multiple SRS resources belong to an SRS resource set where M1 is greater than one. For example, if M1 = 2, the first SRS resource set includes two SRS resources with the same number of ports, and the second SRS resource set includes one SRS resource with a different number of ports from the first SRS resource set. The SRS resources in the first SRS resource set and the SRS resources in the second SRS resource set are transmitted in different time slots.

[0434] Example 4: User Equipment Capabilities

[0435] In an embodiment of the present application, the SRS antenna switching capability supported by the user equipment (terminal) includes a set of transmit antenna numbers and receive antenna numbers supported by the user equipment. The first SRS antenna switching capability is indicated by a first state, and / or the second SRS antenna switching capability is indicated by a first state, and / or the third SRS antenna switching capability is indicated by a first state. The first SRS antenna switching capability is 3 transmit antennas and 8 receive antennas, i.e., 3T8R; the second SRS antenna switching capability is 3 transmit antennas and 4 receive antennas, i.e., 3T4R; and the third SRS antenna switching capability is 6 transmit antennas and 8 receive antennas, i.e., 6T8R. The first state, the second state, and the third state can be states in a field, for example, the first state, the second state, and the third state are states in the srs-TxSwitch field of the user equipment capability (UE capability) message element (IE); the first state, the second state, and the third state can also be states in different fields, for example, different fields, such as different fields in the user equipment capability IE, respectively indicating the first state, the second state, and the third state.

[0436] For example, the first SRS antenna switching capability and / or the second SRS antenna switching capability and / or the third SRS antenna switching capability can be added to the supportedSRS-TxPortSwitch field on the basis of the existing IE structure; for another example, a new field can be added on the basis of the existing IE structure to report the first SRS antenna switching capability and / or the second SRS antenna switching capability and / or the third SRS antenna switching capability.

[0437] In an embodiment of the present application, in the existing protocol, the number of uplink transmission layers (uplink MIMO layers) supported by the UE can support 1 layer oneLayer, 2 layers twoLayers, and 4 layers fourLayers. On the basis of the above, one of the states in the uplink transmission layer number (uplink MIMO layer number) field supported by the UE indicates 3 layers threeLayers, and one of the states in the uplink MIMO layer number field supported by the UE indicates 6 layers sixLayers, and / or 8 layers eightLayers. The UE reports the number of uplink MIMO layers supported through the uplink MIMO layer number field.

[0438] In an embodiment of the present application, in an SRS resource set used for SRS antenna switching in the existing protocol, a guard interval needs to be reserved between two adjacent SRS resources, and the guard interval is related to the subcarrier spacing. In this patent, the guard interval between two adjacent SRS resources supported by the user equipment is reported through the UE capability, and the value of the guard interval is less than or equal to 2 symbols. For example, the guard interval can be 0 symbols, 1 symbols, or 2 symbols. Alternatively, the guard interval can be 0us or 100us. The guard interval is related to the type of SRS antenna switching supported by the UE in a specific frequency band. If the UE reports a guard interval of 0 symbols, the base station is expected to be configured according to a specific SRS resource set, SRS resources, and number of SRS ports.

[0439] In an embodiment of the present application, the SRS antenna switching capability supported by the user equipment includes multiple combinations of the number of transmitting antennas and the number of receiving antennas supported by the user equipment. For example, while supporting 6 transmitting antennas and 8 receiving antennas, the UE can also support other combinations of the number of transmitting antennas and the number of receiving antennas.

[0440] In an embodiment of the present application, the configuration information of SRS antenna switching is associated with a specific frequency band. For example, according to different frequency bands, the network device configures the corresponding SRS configuration information; or, the configuration information of SRS antenna switching is determined according to the SRS antenna switching capability supported by the user equipment. For example, if the SRS antenna switching capability is the first SRS antenna switching capability, then the configuration information of SRS antenna switching includes the number of SRS resource sets, the number of SRS resources included in each SRS resource set, and the SRS ports included in the SRS resources. This configuration information is configured according to the first SRS antenna switching capability; or, the configuration information of SRS antenna switching is determined according to the SRS antenna switching capability supported by the user equipment, and the SRS antenna switching capability is associated with a specific frequency band. For example, different frequency bands correspond to different SRS antenna switching capabilities. In some frequency bands, the user equipment can support the first antenna switching capability, and in some frequency bands, the user equipment supports the second-day first switching capability. If in a certain frequency band, the SRS antenna switching capability is the first SRS antenna switching capability, and the first SRS antenna switching capability is 6 transmitting antennas and 8 receiving antennas, then the user equipment determines the SRS antenna switching configuration based on the first SRS antenna switching capability.

[0441] Example 5: Multiple combinations of the number of transmitting antennas and the number of receiving antennas supported by the user equipment

[0442] In the embodiment of the present application, the SRS antenna switching capability supported by the user equipment includes a combination of multiple groups of transmit antennas and receive antennas supported by the user equipment. When the user equipment can support 6 transmit antennas and 8 receive antennas, the specific example is as follows:

[0443] Based on the existing combinations of transmit and receive antennas supported by UEs, a new combination, 6T8R, is added. For example, the terminal can support fallback to the following: {6T8R, 4T8R, 3T8R, 3T4R, 2T4R, 1T2R}, or {6T8R, 2T4R, 2T2R, 1T2R, 1T1R}, or {6T8R, 2T4R, 1T4R, 2T2R, 1T2R, 1T1R}.

[0444] In the embodiment of the present application, the SRS antenna switching capability supported by the user equipment includes a combination of multiple groups of transmit antennas and receive antennas supported by the user equipment. When the user equipment can support 3 transmit antennas and 4 receive antennas, the specific example is as follows:

[0445] If the terminal is capable of supporting 3T4R, the terminal can support fallback as follows: {3T4R, 2T4R, 1T2R} or {3T4R, 2T4R, 1T2R, 1T1R}.

[0446] In the embodiment of the present application, the SRS antenna switching capability supported by the user equipment includes a combination of multiple groups of transmit antennas and receive antennas supported by the user equipment. When the user equipment can support 3 transmit antennas and 8 receive antennas, the specific example is as follows:

[0447] If the terminal is capable of supporting 3T8R, the terminal can support fallback as follows: {3T8R, 3T4R, 2T4R, 1T2R} or {3T8R, 3T4R, 2T4R, 1T2R, 1T1R}.

[0448] In an embodiment of the present application, the user equipment reports multiple combinations of the number of transmitting antennas and the number of receiving antennas, thereby increasing the flexibility of the network equipment configuration.

[0449] The preferred embodiments of the present application are described in detail above in conjunction with the accompanying drawings. However, the present application is not limited to the specific details in the above embodiments. Within the technical concept of the present application, the technical solution of the present application can be subjected to a variety of simple modifications, and these simple modifications all fall within the scope of protection of the present application. For example, the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present application will no longer describe the various possible combinations separately. For another example, the various different embodiments of the present application can also be arbitrarily combined, as long as they do not violate the idea of ​​the present application, they should also be regarded as the contents disclosed in the present application. For another example, under the premise of no conflict, the various embodiments and / or the technical features in each embodiment described in the present application can be arbitrarily combined with the prior art, and the technical solution obtained after the combination should also fall within the scope of protection of the present application.

[0450] It should also be understood that in the various method embodiments of the present application, the sequence numbers of the above-mentioned processes do not imply a precedence in the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application. In addition, in the embodiments of the present application, the terms "downlink," "uplink," and "sidelink" are used to indicate the transmission direction of signals or data, where "downlink" is used to indicate the first direction of transmission of signals or data from a site to a user equipment in a cell, "uplink" is used to indicate the second direction of transmission of signals or data from a user equipment in a cell to a site, and "sidelink" is used to indicate the third direction of transmission of signals or data from user equipment 1 to user equipment 2. For example, "downlink signal" indicates that the transmission direction of the signal is the first direction. In addition, in the embodiments of the present application, the term "and / or" is merely a description of the association relationship between associated objects, indicating that three relationships can exist. Specifically, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0451] FIG9 is a schematic diagram of the structure of an optional communication device provided in an embodiment of the present application. The communication device 10 is applied to a terminal. As shown in FIG9 , the communication device 10 includes a first sending unit 11; wherein,

[0452] The first sending unit 11 is configured to send P SRS resources according to the sounding reference signal SRS configuration information and power scaling information; wherein the power scaling information includes P power scaling factors; the P power scaling factors correspond one-to-one to the P SRS resources; the P SRS resources are SRS resources for antenna switching indicated by the SRS configuration information; the P power scaling factors are used to ensure that the transmission power of the SRS ports corresponding to different SRS resources among the P SRS resources is the same; and P is a positive integer greater than or equal to 1.

[0453] In some embodiments, the SRS configuration information includes one or more of the following: a first quantity, the first quantity is the number of transmitting antennas supported by the terminal; a second quantity, the second quantity is the number of receiving antennas supported by the terminal; the terminal's transmission layer number information, the transmission layer number information is used to indicate the number of transmission layers supported by the terminal; SRS resource set information, the SRS resource set information is used to indicate one or more SRS resource sets; SRS resource information, the SRS resource information is used to indicate the SRS resources included in the SRS resource set; port information, the port information is used to indicate the SRS port and antenna port associated with the SRS resource.

[0454] In some embodiments, the P SRS resources belong to 1 or M SRS resource sets, where M is a positive integer greater than or equal to 2.

[0455] In some embodiments, different SRS resources in the same SRS resource set correspond to the same or different numbers of SRS ports; and / or, SRS resources in different SRS resource sets correspond to different numbers of SRS ports.

[0456] In some embodiments, different SRS resource sets include the same or different numbers of SRS resources.

[0457] In some embodiments, different SRS resource sets are of the same or different types; the types of SRS resource sets include any one or more of periodic, aperiodic, and semi-persistent.

[0458] In some embodiments, different SRS resources occupy different time domain positions.

[0459] In some embodiments, the different time domain positions include one or more of the following: different time slots; different symbols.

[0460] In some embodiments, the time slots of SRS resources in different SRS resource sets are different, and / or the symbols of different SRS resources in the same resource set are different.

[0461] In some embodiments, different SRS resources are associated with different antenna ports.

[0462] In some embodiments, when the first number is 3 and the second number is 8, the P SRS resources include: 2 first SRS resources with the number of SRS ports being 3 and 1 second SRS resource with the number of SRS ports being 2.

[0463] In some embodiments, when the first quantity is 3 and the second quantity is 8, the P SRS resources include: 2 first SRS resources with an SRS port quantity of 3 consisting of 1 third SRS resource with an SRS port quantity of 1 and 1 second SRS resource with an SRS port quantity of 2; and 1 second SRS resource with an SRS port quantity of 2.

[0464] In some embodiments, when the first quantity is 3 and the second quantity is 8, the P SRS resources include: 2 first SRS resources with an SRS port quantity of 3 configured by 1 fourth SRS resource with an SRS port quantity of 4; 1 second SRS resource with an SRS port quantity of 2; 1 SRS port corresponding to the fourth SRS resource with an SRS port quantity of 4 is configured as unavailable.

[0465] In some embodiments, the SRS port configured as unavailable among the SRS ports corresponding to the fourth SRS resource is: the SRS port identified by the largest index, or the SRS port identified by the smallest index.

[0466] In some embodiments, when the first number is 3 and the second number is 4, the P SRS resources include: 1 first SRS resource with 3 SRS ports and 1 third SRS resource with 1 SRS port.

[0467] In some embodiments, when the first quantity is 3 and the second quantity is 4, the P SRS resources include: a first SRS resource with an SRS port quantity of 3 consisting of 1 second SRS resource with an SRS port quantity of 2 and 1 third SRS resource with an SRS port quantity of 1, and 1 third SRS resource with an SRS port quantity of 1.

[0468] In some embodiments, when the first quantity is 3 and the second quantity is 4, the P SRS resources include: 1 first SRS resource with an SRS port quantity of 3 configured by a fourth SRS resource with an SRS port quantity of 4, and 1 third SRS resource with an SRS port quantity of 1; 1 SRS port corresponding to the fourth SRS resource is configured as unavailable.

[0469] In some embodiments, when the first quantity is 3 and the second quantity is 4, the P SRS resources include: 2 second SRS resources with the quantity of SRS ports being 2.

[0470] In some embodiments, when the first number is 3 and the second number is 4, the P SRS resources include: 1 second SRS resource with the number of SRS ports being 2 and 2 third SRS resources with the number of SRS ports being 1.

[0471] In some embodiments, the first SRS resource is associated with 3 antenna ports; the second SRS resource is associated with 2 antenna ports; and the third SRS resource is associated with 1 antenna port.

[0472] In some embodiments, the power scaling factor is used to adjust the linear value of the transmit power of the SRS resource corresponding to the power scaling factor to determine the actual value of the transmit power of the SRS resource.

[0473] In some embodiments, the power scaling factors of different SRS resources among the P SRS resources are the same or different.

[0474] In some embodiments, the power scaling factor corresponding to the SRS resource is related to the number of SRS ports and the number of antenna ports corresponding to the SRS resource.

[0475] In some embodiments, the power scaling factor corresponding to the second SRS resource with 2 SRS ports is 2 / 3, and the power scaling factor corresponding to the first SRS resource with 3 SRS ports is 1.

[0476] In some embodiments, the power scaling factor corresponding to the second SRS resource having 2 SRS ports is 1 / 2, and the power scaling factor corresponding to the fourth SRS resource having 4 SRS ports is 3 / 4.

[0477] In some embodiments, the power scaling factor corresponding to the first SRS resource having 3 SRS ports is 1, and the power scaling factor corresponding to the third SRS resource having 1 SRS port is 1 / 3.

[0478] In some embodiments, the power scaling factor corresponding to the first SRS resource having 3 SRS ports is 3 / 4, and the power scaling factor corresponding to the third SRS resource having 1 SRS port is 1 / 4.

[0479] In some embodiments, the power scaling factor corresponding to the second SRS resource with the number of SRS ports being 2 is 1.

[0480] In some embodiments, the power scaling factor corresponding to the second SRS resource having 2 SRS ports is 1, and the power scaling factor corresponding to the third SRS resource having 1 SRS port is 1 / 2.

[0481] In some embodiments, the first sending unit 11 is further configured to send SRS antenna switching capability to the network device; wherein the SRS antenna switching capability includes one or more groups of antenna switching capabilities supported by the terminal; the antenna switching capability includes a first quantity and a second quantity supported by the terminal.

[0482] In some embodiments, the SRS antenna switching capability includes: a first antenna switching capability; the first antenna switching capability indicates a set of first quantity and second quantity supported by the terminal.

[0483] In some embodiments, the SRS antenna switching capability also includes: the number of uplink transmission layers; the uplink transmission layer number is carried in the uplink MIMO layer number field in the SRS antenna switching capability; the uplink MIMO layer number field indicates the number of transmission layers of the transmitting antenna supported by the terminal.

[0484] In some embodiments, the SRS antenna switching capability further includes: a guard interval between two adjacent SRS resources; the value of the guard interval satisfies any of the following: the value of the guard interval is less than or equal to N symbols; where N is a positive integer greater than or equal to 1; the value of the guard interval is less than or equal to Q microseconds; where Q is a positive number.

[0485] In some embodiments, the guard interval is related to the type of SRS antenna switching supported by the terminal in a preset frequency band.

[0486] In some embodiments, the SRS antenna switching capability further includes: a second antenna switching capability; the second antenna switching capability indicates a plurality of first quantities and a second quantity of groups for antenna switching fallback supported by the terminal.

[0487] In some embodiments, the SRS configuration information is related to a preset frequency band; or, the SRS configuration information is related to an antenna switching capability supported by the terminal; or, the SRS configuration information is related to an antenna switching capability supported by the terminal, and the antenna switching capability is related to the preset frequency band.

[0488] In some embodiments, the communication device 10 further includes a first receiving unit 12 configured to receive SRS configuration information and / or power scaling information sent by a network device.

[0489] An embodiment of the present application provides a communication device. On the one hand, P power scaling factors adjust the linear value of the transmit power of the SRS resources so that the actual values ​​of the transmit power of the transmit antennas corresponding to different SRS resources in the P SRS resources are the same to adapt to different communication scenarios and system optimization goals. This helps to more accurately estimate and measure the channel quality in the downlink, thereby improving the accuracy of downlink channel information acquisition. On the other hand, by using the SRS signal, the downlink channel quality can be measured on the uplink, and this information can be used to better configure and optimize the downlink. By adjusting the transmit power and configuration of the SRS resources, the system can adapt to different channel conditions more accurately, thereby improving the accuracy of channel estimation. The use of power scaling factors enables the system to dynamically adjust the transmit power to adapt to different communication scenarios, thereby further improving the performance of the system.

[0490] Those skilled in the art should understand that the relevant description of the above-mentioned communication device in the embodiment of the present application can be understood with reference to the relevant description of the communication method in the embodiment of the present application.

[0491] FIG10 is a second schematic diagram of the structure of an optional communication device provided in an embodiment of the present application, which is applied to a network device. As shown in FIG10 , the communication device 20 includes a second receiving unit 21; wherein,

[0492] The second receiving unit 21 is configured to receive P sounding reference signal SRS resources; wherein the P SRS resources are related to SRS configuration information and power scaling information; the power scaling information includes P power scaling factors; the P power scaling factors correspond one-to-one to the P SRS resources; the P SRS resources are SRS resources for antenna switching indicated by the SRS configuration information; the P power scaling factors are used to ensure that the transmission power of the SRS ports corresponding to different SRS resources in the P SRS resources is the same; and P is a positive integer greater than or equal to 1.

[0493] In some embodiments, the SRS configuration information includes one or more of the following: a first quantity, the first quantity is the number of transmitting antennas supported by the terminal; a second quantity, the second quantity is the number of receiving antennas supported by the terminal; the terminal's transmission layer number information, the transmission layer number information is used to indicate the number of transmission layers supported by the terminal; SRS resource set information, the SRS resource set information is used to indicate one or more SRS resource sets; SRS resource information, the SRS resource information is used to indicate the SRS resources included in the SRS resource set; port information, the port information is used to indicate the SRS port and antenna port corresponding to the SRS resource.

[0494] In some embodiments, the P SRS resources belong to 1 or M SRS resource sets, where M is a positive integer greater than or equal to 2.

[0495] In some embodiments, different SRS resources in the same SRS resource set correspond to the same or different numbers of SRS ports; and / or, SRS resources in different SRS resource sets correspond to different numbers of SRS ports.

[0496] In some embodiments, different SRS resource sets include the same or different numbers of SRS resources.

[0497] In some embodiments, different SRS resource sets are of the same or different types; the types of SRS resource sets include any one or more of periodic, aperiodic, and semi-persistent.

[0498] In some embodiments, different SRS resources occupy different time domain positions.

[0499] In some embodiments, the different time domain positions include one or more of the following: different time slots; different symbols.

[0500] In some embodiments, the time slots of SRS resources in different SRS resource sets are different, and / or the symbols of different SRS resources in the same resource set are different.

[0501] In some embodiments, different SRS resources are associated with different antenna ports.

[0502] In some embodiments, when the first number is 3 and the second number is 8, the P SRS resources include: 2 first SRS resources with the number of SRS ports being 3 and 1 second SRS resource with the number of SRS ports being 2.

[0503] In some embodiments, when the first quantity is 3 and the second quantity is 8, the P SRS resources include: 2 third SRS resources with an SRS port quantity of 3 consisting of 1 third SRS resource with an SRS port quantity of 1 and 1 second SRS resource with an SRS port quantity of 2; and 1 second SRS resource with an SRS port quantity of 2.

[0504] In some embodiments, when the first quantity is 3 and the second quantity is 8, the P SRS resources include: 2 first SRS resources with an SRS port quantity of 3 configured by 1 fourth SRS resource with an SRS port quantity of 4; 1 second SRS resource with an SRS port quantity of 2; and 1 SRS port corresponding to the fourth SRS resource is configured as unavailable.

[0505] In some embodiments, the SRS port configured as unavailable among the SRS ports corresponding to the fourth SRS resource is: the SRS port identified by the largest index, or the SRS port identified by the smallest index.

[0506] In some embodiments, when the first number is 3 and the second number is 4, the P SRS resources include: 1 first SRS resource with 3 SRS ports and 1 third SRS resource with 1 SRS port.

[0507] In some embodiments, when the first quantity is 3 and the second quantity is 4, the P SRS resources include: a first SRS resource with an SRS port quantity of 3 consisting of 1 second SRS resource with an SRS port quantity of 2 and 1 third SRS resource with an SRS port quantity of 1, and 1 third SRS resource with an SRS port quantity of 1.

[0508] In some embodiments, when the first quantity is 3 and the second quantity is 4, the P SRS resources include: 1 first SRS resource with an SRS port quantity of 3 configured by a fourth SRS resource with an SRS port quantity of 4, and 1 third SRS resource with an SRS port quantity of 1; 1 SRS port corresponding to the fourth SRS resource is configured as unavailable.

[0509] In some embodiments, when the first quantity is 3 and the second quantity is 4, the P SRS resources include: 2 second SRS resources with the quantity of SRS ports being 2.

[0510] In some embodiments, when the first number is 3 and the second number is 4, the P SRS resources include: 1 second SRS resource with the number of SRS ports being 2 and 2 third SRS resources with the number of SRS ports being 1.

[0511] In some embodiments, the first SRS resource is associated with 3 antenna ports; the second SRS resource is associated with 2 antenna ports; and the third SRS resource is associated with 1 antenna port.

[0512] In some embodiments, the power scaling factor is used to adjust the linear value of the transmit power of the SRS resource corresponding to the power scaling factor to determine the actual value of the transmit power of the SRS resource.

[0513] In some embodiments, the power scaling factors of different SRS resources among the P SRS resources are the same or different.

[0514] In some embodiments, the power scaling factor corresponding to the SRS resource is related to the number of SRS ports and the number of antenna ports corresponding to the SRS resource.

[0515] In some embodiments, the power scaling factor corresponding to the second SRS resource with 2 SRS ports is 2 / 3, and the power scaling factor corresponding to the first SRS resource with 3 SRS ports is 1.

[0516] In some embodiments, the power scaling factor corresponding to the second SRS resource having 2 SRS ports is 1 / 2, and the power scaling factor corresponding to the fourth SRS resource having 4 SRS ports is 3 / 4.

[0517] In some embodiments, the power scaling factor corresponding to the first SRS resource having 3 SRS ports is 1, and the power scaling factor corresponding to the third SRS resource having 1 SRS port is 1 / 3.

[0518] In some embodiments, the power scaling factor corresponding to the first SRS resource having 3 SRS ports is 3 / 4, and the power scaling factor corresponding to the third SRS resource having 1 SRS port is 1 / 4.

[0519] In some embodiments, the power scaling factor corresponding to the second SRS resource with the number of SRS ports being 2 is 1.

[0520] In some embodiments, the power scaling factor corresponding to the second SRS resource having 2 SRS ports is 1, and the power scaling factor corresponding to the third SRS resource having 1 SRS port is 1 / 2.

[0521] In some embodiments, the second receiving unit 21 is further configured to receive SRS antenna switching capability sent by the terminal; wherein the SRS antenna switching capability includes one or more groups of antenna switching capabilities supported by the terminal; the antenna switching capability includes a first quantity and a second quantity supported by the terminal.

[0522] In some embodiments, the SRS antenna switching capability includes: a first antenna switching capability; the first antenna switching capability indicates a set of a first quantity and a second quantity supported by the terminal.

[0523] In some embodiments, the SRS antenna switching capability also includes: the number of uplink transmission layers; the uplink transmission layer number is carried in the uplink MIMO layer number field in the SRS antenna switching capability; the uplink MIMO layer number field indicates the number of transmission layers of the transmitting antenna supported by the terminal.

[0524] In some embodiments, the SRS antenna switching capability further includes: a guard interval between two adjacent SRS resources; the value of the guard interval satisfies any of the following: the value of the guard interval is less than or equal to N symbols; where N is a positive integer greater than or equal to 1; the value of the guard interval is less than or equal to Q microseconds; where Q is a positive number.

[0525] In some embodiments, the guard interval is related to the type of SRS antenna switching supported by the terminal in a preset frequency band.

[0526] In some embodiments, the SRS antenna switching capability further includes: a second antenna switching capability; the second antenna switching capability indicates a plurality of first quantities and a second quantity of groups for antenna switching fallback supported by the terminal.

[0527] In some embodiments, the SRS configuration information is related to a preset frequency band; or, the SRS configuration information is related to an antenna switching capability supported by the terminal; or, the SRS configuration information is related to an antenna switching capability supported by the terminal, and the antenna switching capability is related to the preset frequency band.

[0528] In some embodiments, the communication device 10 further includes a second sending unit 22 configured to send SRS configuration information and / or power scaling information to the terminal.

[0529] An embodiment of the present application provides a communication device. On the one hand, P power scaling factors adjust the linear value of the transmit power of the SRS resources so that the actual values ​​of the transmit power of the transmit antennas corresponding to different SRS resources in the P SRS resources are the same to adapt to different communication scenarios and system optimization goals. This helps to more accurately estimate and measure the channel quality in the downlink, thereby improving the accuracy of downlink channel information acquisition. On the other hand, by using the SRS signal, the downlink channel quality can be measured on the uplink, and this information can be used to better configure and optimize the downlink. By adjusting the transmit power and configuration of the SRS resources, the system can adapt to different channel conditions more accurately, thereby improving the accuracy of channel estimation. The use of power scaling factors enables the system to dynamically adjust the transmit power to adapt to different communication scenarios, thereby further improving the performance of the system.

[0530] Those skilled in the art should understand that the relevant description of the above-mentioned communication device in the embodiment of the present application can be understood with reference to the relevant description of the communication method in the embodiment of the present application.

[0531] FIG11 is a schematic diagram of the structure of an optional communication device provided in an embodiment of the present application. The communication device 30 can be a terminal device or a network device. The communication device 30 shown in FIG11 includes a processor 31, which can call and execute a computer program from a memory to implement the method in the embodiment of the present application.

[0532] Optionally, as shown in FIG11 , the communication device 30 may further include a memory 32. The processor 31 may call and execute a computer program from the memory 32 to implement the method in the embodiment of the present application.

[0533] The memory 32 may be a separate device independent of the processor 31 , or may be integrated into the processor 31 .

[0534] Optionally, as shown in FIG11 , the communication device 30 may further include a transceiver 33 , and the processor 31 may control the transceiver 33 to communicate with other devices, specifically, to send information or data to other devices, or to receive information or data sent by other devices.

[0535] The transceiver 33 is also called a communication interface, and is used to receive and send signals during the process of sending and receiving information with other external network elements.

[0536] The transceiver 33 may include a transmitter and a receiver. The transceiver 33 may further include an antenna, and the number of antennas may be one or more.

[0537] Optionally, the communication device 30 may specifically be a network device in an embodiment of the present application, and the communication device 30 may implement the corresponding processes implemented by the network device in each method in the embodiment of the present application. For the sake of brevity, they will not be repeated here.

[0538] Optionally, the communication device 30 may specifically be a terminal (mobile terminal / terminal device) in an embodiment of the present application, and the communication device 30 may implement the corresponding processes implemented by the terminal in each method in the embodiment of the present application. For the sake of brevity, they will not be repeated here.

[0539] Figure 12 is a schematic diagram of the structure of an optional chip provided in an embodiment of the present application. The chip 40 shown in Figure 12 includes a processor 41, which can call and run a computer program from a memory to implement the method in the embodiment of the present application.

[0540] Optionally, as shown in FIG12 , the chip 40 may further include a memory 42 , wherein the processor 41 may call and execute a computer program from the memory 42 to implement the method in the embodiment of the present application.

[0541] The memory 42 may be a separate device independent of the processor 41 , or may be integrated into the processor 41 .

[0542] Optionally, the chip 40 may further include a transceiver (also called a communication interface) for sending and receiving signals during the process of sending and receiving information with a device or chip.

[0543] Optionally, as shown in Figure 12, the transceiver may include an input interface 43. The processor 41 may control the input interface to communicate with other devices or chips, and specifically, may receive information or data sent by other devices or chips.

[0544] Optionally, as shown in Figure 12, the transceiver may include an output interface 44. The processor 41 may control the output interface to communicate with other devices or chips, and specifically, may send information or data to other devices or chips.

[0545] Optionally, the chip can be applied to the network device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the network device in each method of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0546] Optionally, the chip can be applied to the terminal (mobile terminal / terminal device) in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the terminal in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0547] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0548] An embodiment of the present application further provides a computer storage medium, which stores one or more programs. The one or more programs can be executed by one or more processors to implement the method in the embodiment of the present application.

[0549] FIG13 is a schematic diagram of the structure of an optional communication system provided in an embodiment of the present application. As shown in FIG13 , the communication system 50 includes a terminal 51 and a network device 52 .

[0550] Among them, the terminal 51 can be used to implement the corresponding functions implemented by the terminal in the above method, and the network device 52 can be used to implement the corresponding functions implemented by the network device in the above method. For the sake of brevity, they are not repeated here.

[0551] It should be understood that the processor of the embodiments of the present application may be an integrated circuit chip with signal processing capabilities. During implementation, each step of the above method embodiment can be completed by hardware integrated logic circuits in the processor or software instructions. The above processor can 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 devices, discrete gate or transistor logic devices, or discrete hardware components. The various methods, steps, and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in the embodiments of the present application can be directly embodied as being executed by a hardware decoding processor, or can be executed by a combination of hardware and software modules in the decoding processor. The software module can be located in a storage medium mature in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, etc. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

[0552] It is 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 RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM bus random access memory (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0553] It should be understood that the above-mentioned memories are exemplary but not restrictive. For example, the memories in the embodiments of the present application may also be static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM RAM (DR RAM), etc. In other words, the memories in the embodiments of the present application are intended to include, but are not limited to, these and any other suitable types of memories.

[0554] An embodiment of the present application also provides a computer-readable storage medium for storing a computer program.

[0555] Optionally, the computer-readable storage medium can be applied to the network device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0556] Optionally, the computer-readable storage medium can be applied to the terminal (mobile terminal / terminal device) in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the terminal in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0557] An embodiment of the present application also provides a computer program product, including computer program instructions.

[0558] Optionally, the computer program product can be applied to the network device in the embodiments of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0559] Optionally, the computer program product can be applied to the terminal (mobile terminal / terminal device) in the embodiments of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the terminal in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0560] The embodiment of the present application also provides a computer program.

[0561] Optionally, the computer program can be applied to the network device in the embodiments of the present application. When the computer program runs on a computer, the computer executes the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, they are not described here.

[0562] Optionally, the computer program can be applied to the terminal (mobile terminal / terminal device) in the embodiments of the present application. When the computer program runs on the computer, the computer executes the corresponding processes implemented by the terminal in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0563] 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.

[0564] 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.

[0565] 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.

[0566] 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.

[0567] 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.

[0568] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0569] 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 the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the embodiments of the present application.

Claims

1. A communication method, applied to a terminal, comprising: According to the sounding reference signal SRS configuration information and power scaling information, P SRS resources are sent; wherein the power scaling information includes P power scaling factors; the P power scaling factors correspond one-to-one to the P SRS resources; the P SRS resources are SRS resources for antenna switching indicated by the SRS configuration information; the P power scaling factors are used to ensure that the transmission power of the SRS ports corresponding to different SRS resources among the P SRS resources is the same; P is a positive integer greater than or equal to 1.

2. The method according to claim 1, wherein The SRS configuration information includes one or more of the following: a first number, where the first number is the number of transmit antennas supported by the terminal; a second number, where the second number is the number of receive antennas supported by the terminal; The transmission layer number information of the terminal is used to indicate the number of transmission layers supported by the terminal; SRS resource set information, where the SRS resource set information is used to indicate one or more SRS resource sets; SRS resource information, where the SRS resource information is used to indicate the SRS resources included in the SRS resource set; Port information, where the port information is used to indicate an SRS port and an antenna port associated with the SRS resource.

3. The method according to claim 1 or 2, wherein: The P SRS resources belong to 1 or M SRS resource sets, where M is a positive integer greater than or equal to 2.

4. The method according to claim 3, wherein: The numbers of SRS ports corresponding to different SRS resources in the same SRS resource set are the same or different; and / or the numbers of SRS ports corresponding to SRS resources in different SRS resource sets are different.

5. The method according to claim 3 or 4, wherein: The number of SRS resources included in different SRS resource sets is the same or different.

6. The method according to any one of claims 3 to 5, wherein: The types of different SRS resource sets are the same or different; the types of the SRS resource sets include any one or more of periodic, aperiodic and semi-persistent.

7. The method according to any one of claims 1 to 6, wherein: Different SRS resources occupy different time domain positions.

8. The method according to claim 7, wherein: The different time domain positions include one or more of the following: The time slots are different; The symbols are different.

9. The method according to claim 7 or 8, wherein The time slots of the SRS resources in different SRS resource sets are different, and / or the symbols of different SRS resources in the same resource set are different.

10. The method according to any one of claims 1 to 9, wherein: Different SRS resources are associated with different antenna ports.

11. The method according to any one of claims 1 to 10, wherein: When the first number is 3 and the second number is 8, the P SRS resources include: 2 first SRS resources with a number of SRS ports of 3 and 1 second SRS resource with a number of SRS ports of 2.

12. The method according to any one of claims 1 to 10, wherein: When the first quantity is 3 and the second quantity is 8, the P SRS resources include: 2 first SRS resources with an SRS port quantity of 3 consisting of 1 third SRS resource with an SRS port quantity of 1 and 1 second SRS resource with an SRS port quantity of 2; and 1 second SRS resource with an SRS port quantity of 2.

13. The method according to any one of claims 1 to 10, wherein: When the first quantity is 3 and the second quantity is 8, the P SRS resources include: 2 first SRS resources with an SRS port quantity of 3 configured by 1 fourth SRS resource with an SRS port quantity of 4; 1 second SRS resource with an SRS port quantity of 2; and 1 SRS port corresponding to the fourth SRS resource is configured as unavailable.

14. The method according to claim 13, wherein The SRS port configured as unavailable among the SRS ports corresponding to the fourth SRS resource is: the SRS port identified by the largest index, or the SRS port identified by the smallest index.

15. The method according to any one of claims 1 to 10, wherein: When the first number is 3 and the second number is 4, the P SRS resources include: one first SRS resource with an SRS port number of 3 and one third SRS resource with an SRS port number of 1.

16. The method according to any one of claims 1 to 10, wherein: When the first quantity is 3 and the second quantity is 4, the P SRS resources include: a first SRS resource with an SRS port quantity of 3 consisting of 1 second SRS resource with an SRS port quantity of 2 and 1 third SRS resource with an SRS port quantity of 1, and 1 of the third SRS resource.

17. The method according to any one of claims 1 to 10, wherein: When the first quantity is 3 and the second quantity is 4, the P SRS resources include: 1 first SRS resource with an SRS port quantity of 3 configured by a fourth SRS resource with an SRS port quantity of 4, and 1 third SRS resource with an SRS port quantity of 1; 1 SRS port corresponding to the fourth SRS resource is configured as unavailable.

18. The method according to any one of claims 1 to 10, wherein: When the first quantity is 3 and the second quantity is 4, the P SRS resources include: 2 second SRS resources with the quantity of SRS ports being 2.

19. The method according to any one of claims 1 to 10, wherein: When the first quantity is 3 and the second quantity is 4, the P SRS resources include: one second SRS resource with an SRS port quantity of 2 and two third SRS resources with an SRS port quantity of 1.

20. The method according to any one of claims 11 to 19, wherein: The first SRS resource is associated with three antenna ports; The second SRS resource is associated with two antenna ports; The third SRS resource is associated with one antenna port.

21. The method according to any one of claims 1 to 20, wherein: The power scaling factor is used to adjust the linear value of the transmission power of the SRS resource corresponding to the power scaling factor to determine the actual value of the transmission power of the SRS resource.

22. The method according to any one of claims 1 to 20, wherein: The power scaling factors of different SRS resources among the P SRS resources are the same or different.

23. The method according to any one of claims 1 to 20, wherein: The power scaling factor corresponding to the SRS resource is related to the number of SRS ports and the number of antenna ports associated with the SRS resource.

24. The method according to claim 11 or 12, wherein The power scaling factor corresponding to the second SRS resource with 2 SRS ports is 2 / 3, and the power scaling factor corresponding to the first SRS resource with 3 SRS ports is 1.

25. The method according to claim 13 or 14, wherein The power scaling factor corresponding to the second SRS resource with the number of SRS ports being 2 is 1 / 2, and the power scaling factor corresponding to the fourth SRS resource with the number of SRS ports being 4 is 3 / 4.

26. The method according to claim 15 or 16, wherein The power scaling factor corresponding to the first SRS resource with the number of SRS ports being 3 is 1, and the power scaling factor corresponding to the third SRS resource with the number of SRS ports being 1 is 1 / 3.

27. The method according to claim 17, wherein The power scaling factor corresponding to the first SRS resource whose number of SRS ports is 3 is 3 / 4, and the power scaling factor corresponding to the third SRS resource whose number of SRS ports is 1 is 1 / 4.

28. The method according to claim 18, wherein The power scaling factor corresponding to the second SRS resource with the number of SRS ports being 2 is 1.

29. The method according to claim 19, wherein The power scaling factor corresponding to the second SRS resource with the number of SRS ports being 2 is 1, and the power scaling factor corresponding to the third SRS resource with the number of SRS ports being 1 is 1 / 2.

30. The method according to any one of claims 1 to 39, wherein The method further comprises: Sending SRS antenna switching capability to a network device; wherein the SRS antenna switching capability includes one or more groups of antenna switching capabilities supported by the terminal; the antenna switching capability includes a first quantity and a second quantity supported by the terminal.

31. The method according to claim 30, wherein The SRS antenna switching capability includes: a first antenna switching capability; the first antenna switching capability indicates a set of first quantity and second quantity supported by the terminal.

32. The method according to claim 30, wherein The SRS antenna switching capability also includes: the number of uplink transmission layers; the number of uplink transmission layers is carried in the uplink MIMO layer number field in the SRS antenna switching capability; the uplink MIMO layer number field indicates the number of transmission layers of the transmitting antenna supported by the terminal.

33. The method according to claim 30, wherein The SRS antenna switching capability also includes: a guard interval between two adjacent SRS resources; the value of the guard interval satisfies any one of the following: The value of the guard interval is less than or equal to N symbols; wherein N is a positive integer greater than or equal to 1; The value of the guard interval is less than or equal to Q microseconds, where Q is a positive number.

34. The method according to claim 33, wherein The guard interval is related to a type of SRS antenna switching supported by the terminal in a preset frequency band.

35. The method of claim 30, wherein: The SRS antenna switching capability further includes: a second antenna switching capability; the second antenna switching capability indicates a first quantity and a second quantity of multiple groups supported by the terminal for antenna switching fallback.

36. The method according to any one of claims 1 to 35, wherein The SRS configuration information is related to a preset frequency band; or, The SRS configuration information is related to the antenna switching capability supported by the terminal; or, The SRS configuration information is related to an antenna switching capability supported by the terminal, and the antenna switching capability is related to a preset frequency band.

37. The method according to any one of claims 1 to 36, wherein The method further comprises: Receive the SRS configuration information and / or the power scaling information sent by a network device.

38. A communication method, applied to a network device, comprising: Receive P sounding reference signal SRS resources; wherein the P SRS resources are related to SRS configuration information and power scaling information; the power scaling information includes P power scaling factors; the P power scaling factors correspond one-to-one to the P SRS resources; the P SRS resources are SRS resources for antenna switching indicated by the SRS configuration information; the P power scaling factors are used to ensure that the transmission power of SRS ports corresponding to different SRS resources among the P SRS resources is the same; P is a positive integer greater than or equal to 1.

39. The method according to claim 38, wherein The SRS configuration information includes one or more of the following: a first number, where the first number is the number of transmit antennas supported by the terminal; a second number, where the second number is the number of receive antennas supported by the terminal; The transmission layer number information of the terminal is used to indicate the number of transmission layers supported by the terminal; SRS resource set information, where the SRS resource set information is used to indicate one or more SRS resource sets; SRS resource information, where the SRS resource information is used to indicate the SRS resources included in the SRS resource set; Port information, where the port information is used to indicate an SRS port and an antenna port associated with the SRS resource.

40. The method according to claim 38 or 39, wherein The P SRS resources belong to 1 or M SRS resource sets, where M is a positive integer greater than or equal to 2.

41. The method according to claim 40, wherein The numbers of SRS ports corresponding to different SRS resources in the same SRS resource set are the same or different; and / or the numbers of SRS ports corresponding to SRS resources in different SRS resource sets are different.

42. The method according to claim 38 or 40, wherein The number of SRS resources included in different SRS resource sets is the same or different.

43. The method according to any one of claims 41 to 42, wherein: The types of different SRS resource sets are the same or different; the types of the SRS resource sets include any one or more of periodic, aperiodic and semi-persistent.

44. The method according to any one of claims 38 to 43, wherein Different SRS resources occupy different time domain positions.

45. The method of claim 44, wherein: The different time domain positions include one or more of the following: The time slots are different; The symbols are different.

46. The method according to claim 44 or 45, wherein The time slots of the SRS resources in different SRS resource sets are different, and / or the symbols of different SRS resources in the same resource set are different.

47. The method according to any one of claims 38 to 46, wherein Different SRS resources are associated with different antenna ports.

48. The method according to any one of claims 38 to 47, wherein When the first number is 3 and the second number is 8, the P SRS resources include: 2 first SRS resources with a number of SRS ports of 3 and 1 second SRS resource with a number of SRS ports of 2.

49. A method according to any one of claims 38 to 47, wherein When the first quantity is 3 and the second quantity is 8, the P SRS resources include: 2 first SRS resources with an SRS port quantity of 3 consisting of 1 third SRS resource with an SRS port quantity of 1 and 1 second SRS resource with an SRS port quantity of 2; and 1 second SRS resource with an SRS port quantity of 2.

50. The method according to any one of claims 38 to 47, wherein When the first quantity is 3 and the second quantity is 8, the P SRS resources include: 2 first SRS resources with an SRS port quantity of 3 configured by 1 fourth SRS resource with an SRS port quantity of 4; 1 second SRS resource with an SRS port quantity of 2; and 1 SRS port corresponding to the fourth SRS resource is configured as unavailable.

51. The method of claim 50, wherein: The SRS port configured as unavailable among the SRS ports corresponding to the fourth SRS resource is: the SRS port identified by the largest index, or the SRS port identified by the smallest index.

52. The method according to any one of claims 38 to 47, wherein In a case where the first quantity is 3 and the second quantity is 4, the P SRS resources include: one first SRS resource with an SRS port quantity of 3 and one third SRS resource with an SRS port quantity of 1.

53. The method according to any one of claims 38 to 47, wherein: When the first quantity is 3 and the second quantity is 4, the P SRS resources include: a first SRS resource with an SRS port quantity of 3 consisting of 1 second SRS resource with an SRS port quantity of 2 and 1 third SRS resource with an SRS port quantity of 1, and 1 of the third SRS resource.

54. The method according to any one of claims 38 to 47, wherein When the first quantity is 3 and the second quantity is 4, the P SRS resources include: 1 first SRS resource with an SRS port quantity of 3 configured by a fourth SRS resource with an SRS port quantity of 4, and 1 third SRS resource with an SRS port quantity of 1; 1 SRS port corresponding to the fourth SRS resource is configured as unavailable.

55. The method according to any one of claims 38 to 47, wherein When the first quantity is 3 and the second quantity is 4, the P SRS resources include: 2 second SRS resources with the quantity of SRS ports being 2.

56. The method according to any one of claims 38 to 47, wherein When the first quantity is 3 and the second quantity is 4, the P SRS resources include: one second SRS resource with an SRS port quantity of 2 and two third SRS resources with an SRS port quantity of 1.

57. The method according to any one of claims 48 to 56, wherein The first SRS resource is associated with three antenna ports; The second SRS resource is associated with two antenna ports; The third SRS resource is associated with one antenna port.

58. The method according to any one of claims 38 to 57, wherein The power scaling factor is used to adjust the linear value of the transmission power of the SRS resource corresponding to the power scaling factor to determine the actual value of the transmission power of the SRS resource.

59. The method according to any one of claims 38 to 57, wherein The power scaling factors of different SRS resources among the P SRS resources are the same or different.

60. The method according to any one of claims 38 to 57, wherein The power scaling factor corresponding to the SRS resource is related to the number of SRS ports and the number of antenna ports associated with the SRS resource.

61. The method of claim 48 or 49, wherein The power scaling factor corresponding to the second SRS resource with 2 SRS ports is 2 / 3, and the power scaling factor corresponding to the first SRS resource with 3 SRS ports is 1.

62. The method according to claim 50 or 51, wherein The power scaling factor corresponding to the second SRS resource with the number of SRS ports being 2 is 1 / 2, and the power scaling factor corresponding to the fourth SRS resource with the number of SRS ports being 4 is 3 / 4.

63. The method according to claim 52 or 53, wherein The power scaling factor corresponding to the first SRS resource with the number of SRS ports being 3 is 1, and the power scaling factor corresponding to the third SRS resource with the number of SRS ports being 1 is 1 / 3.

64. The method of claim 54, wherein: The power scaling factor corresponding to the first SRS resource whose number of SRS ports is 3 is 3 / 4, and the power scaling factor corresponding to the third SRS resource whose number of SRS ports is 1 is 1 / 4.

65. The method of claim 55, wherein The power scaling factor corresponding to the second SRS resource with the number of SRS ports being 2 is 1.

66. The method of claim 56, wherein The power scaling factor corresponding to the second SRS resource with the number of SRS ports being 2 is 1, and the power scaling factor corresponding to the third SRS resource with the number of SRS ports being 1 is 1 / 2.

67. The method according to any one of claims 38 to 66, wherein The method further comprises: Receive the SRS antenna switching capability sent by the terminal; wherein the SRS antenna switching capability includes one or more groups of antenna switching capabilities supported by the terminal; the antenna switching capability includes a first quantity and a second quantity supported by the terminal.

68. The method of claim 67, wherein The SRS antenna switching capability includes: a first antenna switching capability; the first antenna switching capability indicates a set of first quantity and second quantity supported by the terminal.

69. The method of claim 67, wherein The SRS antenna switching capability also includes: the number of uplink transmission layers; the number of uplink transmission layers is carried in the uplink MIMO layer number field in the SRS antenna switching capability; the uplink MIMO layer number field indicates the number of transmission layers of the transmitting antenna supported by the terminal.

70. The method of claim 67, wherein The SRS antenna switching capability also includes: a guard interval between two adjacent SRS resources; the value of the guard interval satisfies any one of the following: The value of the guard interval is less than or equal to N symbols; wherein N is a positive integer greater than or equal to 1; The value of the guard interval is less than or equal to Q microseconds, where Q is a positive number.

71. The method of claim 70, wherein The guard interval is related to a type of SRS antenna switching supported by the terminal in a preset frequency band.

72. The method of claim 67, wherein The SRS antenna switching capability further includes: a second antenna switching capability; the second antenna switching capability indicates a first quantity and a second quantity of multiple groups supported by the terminal for antenna switching fallback.

73. The method according to any one of claims 38 to 72, wherein The SRS configuration information is related to a preset frequency band; or, The SRS configuration information is related to the antenna switching capability supported by the terminal; or, The SRS configuration information is related to an antenna switching capability supported by the terminal, and the antenna switching capability is related to a preset frequency band.

74. The method according to any one of claims 38 to 73, wherein The method further comprises: The SRS configuration information and / or the power scaling information are delivered to the terminal.

75. A communication device, comprising: The first sending unit is configured to send P SRS resources according to the sounding reference signal SRS configuration information and power scaling information; wherein the power scaling information includes P power scaling factors; the P power scaling factors correspond one-to-one to the P SRS resources; the P SRS resources are SRS resources for antenna switching indicated by the SRS configuration information; the P power scaling factors are used to ensure that the transmission power of the SRS ports corresponding to different SRS resources among the P SRS resources is the same; P is a positive integer greater than or equal to 1.

76. A communication device, comprising: The second receiving unit is configured to receive P sounding reference signal SRS resources; wherein the P SRS resources are related to SRS configuration information and power scaling information; the power scaling information includes P power scaling factors; the P power scaling factors correspond one-to-one to the P SRS resources; the P SRS resources are SRS resources for antenna switching indicated by the SRS configuration information; the P power scaling factors are used to ensure that the transmission power of SRS ports corresponding to different SRS resources among the P SRS resources is the same; P is a positive integer greater than or equal to 1.

77. A communication device, comprising: memory for storing computer programs; a processor, connected to the memory, configured to call and execute the computer program from the memory to implement the method according to any one of claims 1 to 37, or to implement the method according to any one of claims 38 to 74; A transceiver is used to send and receive information when sending and receiving information with other external devices.

78. A chip, comprising: memory for storing computer programs; A processor, connected to the memory, configured to call and execute a computer program from the memory, so that a device equipped with the chip performs the method according to any one of claims 1 to 37, or performs the method according to any one of claims 38 to 74; A transceiver is used to send and receive information between a device or chip.

79. A computer-readable storage medium storing a computer program, wherein the computer program, when executed by at least one processor, implements the method according to any one of claims 1 to 37, or implements the method according to any one of claims 38 to 74.

80. A computer program product comprising a computer program or instructions, which, when executed by a processor, implement the steps of the method as claimed in any one of claims 1 to 37; or implement the steps of the method as claimed in any one of claims 38 to 74.

81. A computer program comprising computer program instructions, which, when executed by a processor, implement the method according to any one of claims 1 to 37, or the method according to any one of claims 38 to 74.

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