Communication method and related apparatus

Abstract

A communication method and a related apparatus. The method defines a power control mechanism for 3Tx transmission of a codebook. Specifically, in a case where two SRS resources containing two SRS ports are configured in an SRS resource set for codebook transmission, and a certain SRS port is protocol-restricted or configured not to transmit, on the basis of the total SRS transmission power, a terminal can equally allocate SRS transmission power for three SRS ports (e.g., an SRS port 1, an SRS port 2, and an SRS port 3) that are actually performing transmission, so that the SRS transmission power can be prevented from being allocated to an SRS port that does not actually perform transmission as much as possible, thereby improving communication performance.

Description

Communication method and related device

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on April 3, 2024, with application number 202410406134.7 and application name “Communication Methods and Related Devices”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of communication technology, and in particular to a communication method and related devices. Background Art

[0003] The sounding reference signal (SRS) is an uplink reference signal sent by a terminal to an access network device. The access network device can measure the SRS to estimate the uplink channel and allocate uplink resources based on this estimate. The access network device configures the time-frequency resources, transmit beam, and transmit power used by the terminal to transmit the SRS. Specifically, the access network device can configure one or more SRS resource sets for the terminal, each of which contains one or more SRS resources. Different SRS resource sets perform different functions. The protocol currently defines four main functions: antenna switching, codebook, non-codebook, and beam management. The current protocol supports terminals with uplink antenna ports of 1T, 2T, 4T, and 8T for codebook transmission. Correspondingly, the protocol defines SRS resources containing 1, 2, 4, and 8 SRS ports, respectively. In the future, terminals may support 3T uplink antenna ports for codebook transmission, but the current protocol does not discuss the power control issue of 3 SRS port transmission. Summary of the Invention

[0004] The present application provides a communication method and related devices, defines a power control mechanism for 3Tx transmission of a codebook, and is conducive to improving communication performance.

[0005] The present application is introduced below from different aspects. It should be understood that the implementation methods and beneficial effects of the following different aspects can be referenced to each other.

[0006] In the first aspect, the present application provides a communication method, which can be applied to the terminal side, such as the terminal or a communication module in the terminal, or a circuit or chip in the terminal responsible for the communication function (such as a modem chip, also known as a baseband chip, or a system on chip (SoC) chip or system in package (SIP) chip containing a modem core). Taking the application of this method to the terminal as an example, in this method, the terminal receives configuration information from an access network device, and the configuration information is used to configure an SRS resource set for codebook transmission, the SRS resource set including a first SRS resource and a second SRS resource, the first SRS resource including SRS port 1 and SRS port 2, and the second SRS resource including SRS port 3 and SRS port 4. When SRS port 1, SRS port 2 and SRS port 3 are transmitting, the SRS transmission power of SRS port 1, SRS port 2 and SRS port 3 is equally distributed based on the total SRS transmission power.

[0007] The embodiment of the present application defines an SRS resource set for codebook transmission, which is configured with two SRS resources including two SRS ports, and a power control mechanism when a protocol restricts or configures a certain SRS port not to send (or a protocol restricts or configures three SRS ports to send). This can effectively prevent the SRS transmission power from being allocated to the SRS port that is not actually sent, thereby increasing the SRS transmission power of each SRS port that is actually sent, which is beneficial to improving communication performance.

[0008] In a possible implementation, the evenly distributing the SRS transmit power of the SRS port 1, the SRS port 2, and the SRS port 3 based on the total SRS transmit power includes:

[0009] The SRS transmission powers of the SRS port 1, the SRS port 2, and the SRS port 3 are evenly distributed based on the total SRS transmission power and orthogonal frequency division multiplexing (OFDM) symbols occupied by the first SRS resource and the second SRS resource.

[0010] In this implementation, the SRS transmit power is allocated to each SRS port actually transmitting based on the total SRS transmit power and the OFDM symbols occupied by the SRS resources. This power allocation method combined with actual scenarios has high applicability and more accurate power allocation.

[0011] In one possible implementation, each SRS resource occupies one OFDM symbol. When the OFDM symbols occupied by the first SRS resource and the second SRS resource are the same, the total SRS transmission power is evenly distributed to the SRS port 1, the SRS port 2 and the SRS port 3. The total SRS transmission power is the transmission power of the one OFDM symbol.

[0012] In this implementation, if two SRS resources are sent on the same OFDM symbol, the SRS transmit power allocated to each SRS port is one-third of the total SRS transmit power (here the total SRS transmit power is defined on one OFDM symbol, i.e., the total SRS transmit power is the transmit power of that one OFDM symbol). This ensures that the power allocated to each SRS port that actually transmits is the same, and avoids power waste caused by allocating SRS transmit power to SRS ports that are not actually transmitting, which is beneficial to improving communication performance.

[0013] In one possible implementation, each SRS resource occupies one OFDM symbol. When the OFDM symbols occupied by the first SRS resource and the second SRS resource are different, the SRS transmit power of each of the SRS port 1, the SRS port 2, and the SRS port 3 is one-fourth of the total SRS transmit power, where the total SRS transmit power is the sum of the transmit powers corresponding to the OFDM symbols occupied by the first SRS resource and the second SRS resource. Alternatively, the SRS transmit power of each of the SRS port 1, the SRS port 2, and the SRS port 3 is one-half of the transmit power of one OFDM symbol.

[0014] In this implementation, if two SRS resources are sent on two OFDM symbols, the SRS transmission power allocated to each SRS port is one-fourth of the total SRS transmission power (here the total SRS transmission power is defined on two OFDM symbols, that is, the total SRS transmission power is the sum of the transmission powers of the two OFDM symbols) or one-half of the transmission power of one OFDM symbol. This ensures that the power allocated to each SRS port actually transmitted is the same, and that each SRS port actually transmitted can be allocated the maximum power possible.

[0015] In one possible implementation, the method further includes:

[0016] receiving first indication information from the access network device, where the first indication information instructs the SRS port 1, the SRS port 2, and the SRS port 3 to send; or,

[0017] The transmission of the SRS port 1, the SRS port 2 and the SRS port 3 is predefined. The predefined in this application may be predefined by a protocol and is not limited thereto.

[0018] In a possible implementation, the SRS ports correspond to physical uplink shared channel (PUSCH) ports one-to-one, the SRS port 1 corresponds to PUSCH port 1, the SRS port 2 corresponds to PUSCH port 2, and the SRS port 3 corresponds to PUSCH port 3.

[0019] In this implementation, two SRS resources containing two SRS ports are configured in an SRS resource set for codebook transmission, and the correspondence between the PUSCH port and the SRS port is restricted or configured by protocol when the SRS port is not sent, thereby avoiding the problem of port mapping confusion in subsequent PUSCH transmission, which is also beneficial to improving communication performance.

[0020] In a possible implementation, the PUSCH port 1 and the PUSCH port 2 have a coherent relationship.

[0021] In this implementation, by mapping the two SRS ports included in the first SRS resource to two PUSCH ports having a coherent relationship, the compatibility of the port mapping relationship when a partially coherent codebook is subsequently supported can be guaranteed.

[0022] In one possible implementation, the port number of the SRS port 1 is 1000, the port number of the SRS port 2 is 1001, and the port number of the SRS port 3 is 1000, or the port number of the SRS port 1 is 1000, the port number of the SRS port 2 is 1001, and the port number of the SRS port 3 is 1001; the port number of the PUSCH port 1 is 1000, the port number of the PUSCH port 2 is 1002, and the port number of the PUSCH port 3 is 1001.

[0023] In one possible implementation, the method further includes:

[0024] Second indication information is received from the access network device, where the second indication information indicates that the SRS port 1 corresponds to the PUSCH port 1, the SRS port 2 corresponds to the PUSCH port 2, and the SRS port 3 corresponds to the PUSCH port 3.

[0025] In this implementation, the mapping relationship between the SRS port and the PUSCH port can be configured by the network, which is in line with actual applications.

[0026] In one possible implementation, the method further includes:

[0027] Capability information is sent to the access network device, where the capability information indicates a capability of the terminal to support transmission via three antenna ports.

[0028] In this implementation, the terminal can report its own capability information to the access network device, so that the access network device can configure corresponding resources for the terminal based on the capabilities supported by the terminal.

[0029] In the second aspect, the present application provides a communication method, which can be applied to the network side, such as an access network device on the network side or a component in the access network device (such as a circuit, a chip or a chip system, etc.). Taking the application of this method to the access network device as an example, in this method, the access network device can send configuration information to the terminal, and the configuration information is used to configure an SRS resource set for codebook transmission, and the SRS resource set includes a first SRS resource and a second SRS resource, the first SRS resource includes SRS port 1 and SRS port 2, and the second SRS resource includes SRS port 3 and SRS port 4. Then, the access network device can obtain channel state information based on the transmission on SRS port 1, the SRS port 2 and the SRS port 3.

[0030] In one possible implementation, the method further includes:

[0031] First indication information is sent to the terminal, where the first indication information instructs the SRS port 1, the SRS port 2, and the SRS port 3 to send.

[0032] In one possible implementation, the method further includes:

[0033] Second indication information is sent to the terminal, where the second indication information indicates that the SRS port 1 corresponds to the PUSCH port 1, the SRS port 2 corresponds to the PUSCH port 2, and the SRS port 3 corresponds to the PUSCH port 3.

[0034] In a third aspect, the present application provides a communication device, which may be a terminal, comprising:

[0035] a transceiver unit, configured to receive configuration information from an access network device, the configuration information being used to configure a sounding reference signal (SRS) resource set for codebook transmission, the SRS resource set comprising a first SRS resource and a second SRS resource, the first SRS resource comprising an SRS port 1 and an SRS port 2, and the second SRS resource comprising an SRS port 3 and an SRS port 4;

[0036] The processing unit is configured to, when the SRS port 1, the SRS port 2 and the SRS port 3 are transmitting, evenly distribute the SRS transmission power of the SRS port 1, the SRS port 2 and the SRS port 3 based on the total SRS transmission power.

[0037] In a possible implementation, the evenly distributing the SRS transmit power of the SRS port 1, the SRS port 2, and the SRS port 3 based on the total SRS transmit power includes:

[0038] The SRS transmission powers of the SRS port 1, the SRS port 2, and the SRS port 3 are evenly distributed based on the total SRS transmission power and the OFDM symbols occupied by the first SRS resource and the second SRS resource.

[0039] In one possible implementation, each SRS resource occupies one OFDM symbol. When the OFDM symbols occupied by the first SRS resource and the second SRS resource are the same, the total SRS transmission power is evenly distributed to the SRS port 1, the SRS port 2 and the SRS port 3. The total SRS transmission power is the transmission power of the one OFDM symbol.

[0040] In one possible implementation, each SRS resource occupies one OFDM symbol. When the OFDM symbols occupied by the first SRS resource and the second SRS resource are different, the SRS transmit power of each of the SRS port 1, the SRS port 2, and the SRS port 3 is one-fourth of the total SRS transmit power, where the total SRS transmit power is the sum of the transmit powers corresponding to the OFDM symbols occupied by the first SRS resource and the second SRS resource. Alternatively, the SRS transmit power of each of the SRS port 1, the SRS port 2, and the SRS port 3 is one-half of the transmit power of one OFDM symbol.

[0041] In a possible implementation, the transceiver unit is configured to receive first indication information from the access network device, where the first indication information instructs the SRS port 1, the SRS port 2, and the SRS port 3 to send; or

[0042] The transmission of the SRS port 1, the SRS port 2, and the SRS port 3 is predefined.

[0043] In a possible implementation, the SRS ports and PUSCH ports correspond one to one, the SRS port 1 corresponds to the physical uplink shared channel PUSCH port 1, the SRS port 2 corresponds to the PUSCH port 2, and the SRS port 3 corresponds to the PUSCH port 3.

[0044] In a possible implementation, the PUSCH port 1 and the PUSCH port 2 have a coherent relationship.

[0045] In one possible implementation, the port number of the SRS port 1 is 1000, the port number of the SRS port 2 is 1001, and the port number of the SRS port 3 is 1000, or the port number of the SRS port 1 is 1000, the port number of the SRS port 2 is 1001, and the port number of the SRS port 3 is 1001; the port number of the PUSCH port 1 is 1000, the port number of the PUSCH port 2 is 1002, and the port number of the PUSCH port 3 is 1001.

[0046] In a possible implementation, the transceiver unit is further configured to:

[0047] Second indication information is received from the access network device, where the second indication information indicates that the SRS port 1 corresponds to the PUSCH port 1, the SRS port 2 corresponds to the PUSCH port 2, and the SRS port 3 corresponds to the PUSCH port 3.

[0048] In a possible implementation, the transceiver unit is further configured to:

[0049] Capability information is sent to the access network device, where the capability information indicates a capability of the terminal to support transmission via three antenna ports.

[0050] In a fourth aspect, the present application provides a communication device, which may specifically be an access network device, comprising:

[0051] a transceiver unit, configured to send configuration information to a terminal, where the configuration information is used to configure an SRS resource set for codebook transmission, where the SRS resource set includes a first SRS resource and a second SRS resource, where the first SRS resource includes an SRS port 1 and an SRS port 2, and where the second SRS resource includes an SRS port 3 and an SRS port 4;

[0052] The processing unit is configured to obtain channel state information based on the transmissions on the SRS port 1, the SRS port 2, and the SRS port 3.

[0053] In a possible implementation, the transceiver unit is further configured to:

[0054] First indication information is sent to the terminal, where the first indication information instructs the SRS port 1, the SRS port 2, and the SRS port 3 to send.

[0055] In a possible implementation, the transceiver unit is further configured to:

[0056] Second indication information is sent to the terminal, where the second indication information indicates that the SRS port 1 corresponds to the PUSCH port 1, the SRS port 2 corresponds to the PUSCH port 2, and the SRS port 3 corresponds to the PUSCH port 3.

[0057] In a fifth aspect, the present application provides a communication device, comprising a processor and a transceiver, wherein the processor and the transceiver are configured to execute any method of the first to second aspects, or any possible implementation of any of the aspects.

[0058] Optionally, the communication device also includes a memory in which a computer program is stored; the above-mentioned processor and transceiver are used to call the computer program in the memory, so that the communication device executes any method in the first aspect to the second aspect, or a method shown in any possible implementation of any aspect therein.

[0059] In one possible design, the communication device may be a chip that implements the above method or a device including a chip.

[0060] In a sixth aspect, the present application provides a communication device, which includes a processor and an interface circuit, the interface circuit being used to receive signals from other communication devices outside the communication device and transmit them to the processor or send signals from the processor to other communication devices outside the communication device, and the processor being used to implement any method as described in any of the first to second aspects, or any possible implementation of any of the aspects, through a logic circuit or executing code instructions.

[0061] In the seventh aspect, the present application provides a computer-readable storage medium, which stores a computer program or instruction. When the computer program or instruction is executed by a computer, it implements the method shown in any method in the first aspect to the second aspect, or any possible implementation of any aspect therein.

[0062] In an eighth aspect, the present application provides a computer program product. When a computer reads and executes the computer program product, the computer executes any method in the first to second aspects, or a method shown in any possible implementation of any aspect.

[0063] In the ninth aspect, the present application provides a chip system comprising at least one processor and an interface, the processor being used to read and execute instructions stored in a memory, and when the instructions are executed, the chip executes a method as described in any one of the first aspect or the second aspect, or a method as shown in any possible implementation of any one of the aspects.

[0064] In a tenth aspect, the present application provides a communication system, which may include a terminal and an access network device. The terminal is configured to perform the method described in the first aspect or any possible implementation of the first aspect. The access network device is configured to perform the method described in the second aspect or any possible implementation of the second aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] FIG1 is a schematic diagram of the architecture of a communication system used in an embodiment of the present application;

[0066] FIG2 is a flow chart of a communication method according to an embodiment of the present application;

[0067] FIG3 is a schematic diagram of 3Tx SRS resources provided in an embodiment of the present application;

[0068] FIG4 is a schematic structural diagram of a possible communication device provided in an embodiment of the present application;

[0069] FIG5 is a schematic structural diagram of a possible communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0070] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application.

[0071] In the description of this application, "first" and "second" etc. are only used to distinguish different objects, rather than to describe a specific order. In addition, unless otherwise specified, " / " means "or", for example, A / B can mean A or B. "And / or" in this article is merely a description of the association relationship of associated objects, indicating that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, "at least one" means one or more, and "plurality" means two or more. "At least one of the following items" or similar expressions refers to any combination of these items, including any combination of single items or plural items. For example, at least one of a, b, or c can mean: a, b, c; a and b; a and c; b and c; or a and b and c. Among them, a, b, c can be single or multiple.

[0072] The terms "comprise," "include," "have," and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or elements is not limited to the listed steps or elements but may optionally include steps or elements not listed, or may optionally include other steps or elements inherent to the process, method, product, or apparatus.

[0073] In this application, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described in this application as "exemplary," "for example," or "for example" should not be construed as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary," "for example," or "for example" is intended to present the relevant concepts in a concrete way.

[0074] It can be understood that in this application, "when", "if" and "if" all mean that the device will perform corresponding processing under certain objective circumstances, and do not limit the time. It does not require that the device must perform a judgment action when it is implemented, nor does it mean that there are other limitations.

[0075] Elements used in the singular herein are intended to mean "one or more" rather than "one and only one" unless specifically stated otherwise.

[0076] It is understood that in each embodiment of the present application, "A corresponds to B" means that there is a corresponding relationship between A and B, and B can be determined according to A. Determining B according to A does not mean determining B only according to A, and B can also be determined according to A and / or other information.

[0077] To better understand the embodiments of the present application, the following first introduces the system architecture involved in the embodiments of the present application:

[0078] Please refer to Figure 1, which is a schematic diagram of the architecture of the communication system used in the embodiments of the present application. It should be noted that Figure 1 is a possible, non-limiting system schematic diagram. As shown in Figure 1, the communication system 10 includes a radio access network (RAN) 100 and a core network (CN) 200. Optionally, the communication system 10 may also include the Internet 300. The RAN 100 includes at least one RAN node (such as 110a and 110b in Figure 1, collectively referred to as 110) and at least one terminal (such as 120a-120j in Figure 1, collectively referred to as 120). The RAN 100 may also include other RAN nodes, such as wireless relay equipment and / or wireless backhaul equipment (not shown in Figure 1). The terminal 120 is connected to the RAN node 110 wirelessly. The RAN node 110 is connected to the core network 200 wirelessly or wiredly. The core network elements in the core network 200 and the RAN nodes 110 in the RAN 100 can be separate physical devices, or they can be a single physical device that integrates core network logical functions and radio access network logical functions. Alternatively, they can be a single physical device that integrates some core network element functions and some RAN node 110 functions. Terminals and RAN nodes 110 can be connected to each other via wired or wireless means. Figure 1 is merely a schematic diagram; the communication system may also include other network devices, such as wireless relay devices and wireless backhaul equipment, which are not shown in Figure 1.

[0079] The RAN 100 may be a cellular system related to the Third Generation Partnership Project (3GPP), such as a 4G or 5G mobile communication system, or a future-oriented evolutionary system (such as a 6G mobile communication system). The RAN 100 may also be an open access network (O-RAN or ORAN), a cloud radio access network (CRAN), or a wireless fidelity (WiFi) system. The RAN 100 may also be a communication system that integrates two or more of the above systems.

[0080] RAN node 110, sometimes also referred to as radio access network equipment, access network equipment, RAN entity, or access node, constitutes part of a communication system and facilitates wireless access for terminals. Multiple RAN nodes 110 in the communication system 10 can be of the same type or different types. In some scenarios, the roles of RAN node 110 and terminal 120 are relative. For example, network element 120i in Figure 1 can be a helicopter or drone, which can be configured as a mobile base station. For terminal 120j accessing RAN 100 via network element 120i, network element 120i is a base station; however, for base station 110a, network element 120i is a terminal. RAN node 110 and terminal 120 are sometimes referred to as communication devices. For example, network elements 110a and 110b in Figure 1 can be understood as communication devices with base station functionality, and network elements 120a-120j can be understood as communication devices with terminal functionality.

[0081] In one possible scenario, the RAN node 110 may be a base station, an evolved NodeB (eNodeB), an access point (AP), a transmission reception point (TRP), a next-generation NodeB (gNB), a next-generation base station in a sixth-generation (6G) mobile communication system, a base station in a future mobile communication system, or an access node in a WiFi system. The RAN node 110 may be a macro base station (such as 110a in FIG1 ), a micro base station or an indoor station (such as 110b in FIG1 ), a relay node or a donor node, or a wireless controller in a CRAN scenario. Optionally, the RAN node 110 may also be a server, a wearable device, a vehicle, or an onboard device. For example, the wireless access network device in vehicle-to-everything (V2X) technology may be a roadside unit (RSU). All or part of the functions of the RAN node 110 in this application may also be implemented through software functions running on hardware, or through virtualized functions instantiated on a platform (such as a cloud platform). The RAN node 110 in this application may also be a logical node, a logical module or software that can implement all or part of the functions of the RAN node 110.

[0082] In another possible scenario, multiple RAN nodes 110 collaborate to assist the terminal in achieving wireless access, and different RAN nodes 110 respectively implement part of the functions of the base station. For example, the RAN node 110 can be a centralized unit (CU), a distributed unit (DU), a CU-control plane (CP), a CU-user plane (UP), or a radio unit (RU). The CU and DU can be set separately or included in the same network element, such as a baseband unit (BBU). The RU can be included in a radio frequency device or radio frequency unit, such as a remote radio unit (RRU), an active antenna unit (AAU), or a remote radio head (RRH).

[0083] In different systems, CU (or CU-CP and CU-UP), DU or RU may also have different names, but those skilled in the art can understand their meanings. For example, in the ORAN system, CU may also be called O-CU (Open CU), DU may also be called O-DU, CU-CP may also be called O-CU-CP, CU-UP may also be called O-CU-UP, and RU may also be called O-RU. For the convenience of description, this application uses CU, CU-CP, CU-UP, DU and RU as examples for description. Any unit of CU (or CU-CP, CU-UP), DU and RU in this application can be implemented by a software module, a hardware module, or a combination of a software module and a hardware module.

[0084] A terminal may also be referred to as a terminal device, user equipment (UE), mobile station, mobile terminal, etc. Terminals can be widely used in various scenarios, such as device-to-device (D2D), vehicle-to-everything (V2X) communication, machine-type communication (MTC), Internet of Things (IOT), virtual reality, augmented reality, industrial control, autonomous driving, telemedicine, smart grid, smart furniture, smart office, smart wearable, smart transportation, smart city, etc. A terminal may be a mobile phone, tablet computer, computer with wireless transceiver function, wearable device, vehicle, drone, helicopter, airplane, ship, robot, robotic arm, smart home device, etc. The embodiments of the present application do not limit the device form of the terminal.

[0085] For ease of description, the following description uses a base station as an example of RAN node 110. Base stations and terminals can be fixed or mobile. They can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; on water; or on aircraft, balloons, and satellites. The embodiments of this application do not limit the application scenarios of base stations and terminals.

[0086] The roles of base stations and terminals can be relative. For example, the helicopter or drone 120i in Figure 1 can be configured as a mobile base station. To terminals 120j accessing the wireless access network 100 via 120i, terminal 120i is a base station. However, to base station 110a, 120i is a terminal, meaning that communication between 110a and 120i occurs via a wireless air interface protocol. Of course, communication between 110a and 120i can also occur via a base station-to-base station interface protocol. In this case, 120i is also a base station relative to 110a. Therefore, base stations and terminals can be collectively referred to as communication devices. 110a and 110b in Figure 1 can be referred to as communication devices with base station functionality, while 120a-120j in Figure 1 can be referred to as communication devices with terminal functionality.

[0087] Communication between base stations and terminals, between base stations, and between terminals can be carried out through authorized spectrum, unauthorized spectrum, or both; communication can be carried out through spectrum below 6 gigahertz (GHz), spectrum above 6 GHz, or spectrum below 6 GHz and spectrum above 6 GHz. The embodiments of the present application do not limit the spectrum resources used for wireless communication.

[0088] In the embodiments of the present application, the functions of the base station may also be performed by a module (such as a chip) in the base station, or by a control subsystem that includes the base station functions. The control subsystem that includes the base station functions here may be a control center in the above-mentioned application scenarios such as smart grid, industrial control, smart transportation, and smart city. The functions of the terminal may also be performed by a module (such as a chip or modem) in the terminal, or by a device that includes the terminal functions.

[0089] In this application, a base station sends downlink signals or downlink information to a terminal, and the downlink information is carried on a downlink channel; the terminal sends uplink signals or uplink information to the base station, and the uplink information is carried on an uplink channel. In order to communicate with the base station, the terminal needs to establish a wireless connection in the cell controlled by the base station. The cell with which the terminal has established a wireless connection is called the serving cell of the terminal. When the terminal communicates with the serving cell, it will also be interfered with by signals from neighboring cells.

[0090] To facilitate understanding of the relevant contents of the embodiments of this application, some of the knowledge / terms required for the present application are introduced below. It should be noted that these explanations are intended to make the embodiments of this application easier to understand and should not be regarded as limiting the scope of protection claimed by this application.

[0091] 1. Antenna port, SRS port, and physical downlink shared channel (PUSCH) port

[0092] An antenna port is an identifier of a physical channel or physical signal based on the air interface environment. It is a logical concept and refers to a logical port used for spatial transmission. It can correspond to one or more physical antennas. An antenna port is equivalent to a transmission channel. The channel environment changes remain the same for the same antenna port. The receiver can use this information to perform channel estimation and demodulate the transmitted signal. When an antenna port transmits SRS, it can be called an SRS port, that is, an SRS port is used to transmit SRS, or an SRS port is an antenna port used to transmit SRS. When an antenna port transmits PUSCH, it can be called a PUSCH port, that is, a PUSCH port is used to transmit PUSCH, or an antenna port used to transmit PUSCH.

[0093] 2. SRS

[0094] SRS is a reference signal for channel estimation sent by the terminal to the access network equipment (such as the base station). Depending on the usage of SRS, SRS can be divided into the following four types: SRS for beam management, SRS for codebook transmission, SRS for non-codebook transmission, and SRS for antenna switching. The terminal can obtain multiple SRS resource sets and configurations through high-layer signaling. Each SRS resource set configuration includes its purpose, periodic characteristics, etc. The purpose of SRS resources mainly involved in this application is codebook.

[0095] 3. The purpose of SRS resources is codebook

[0096] In codebook-based uplink transmission, the access network device will configure an SRS resource set (SRS resource set) with codebook usage for the terminal. An SRS resource set will include one or more SRS resources. The terminal sends SRS according to the configuration parameters of the one or more SRS resources. Accordingly, the access network device receives the SRS and then performs channel measurement. If the number of SRS resources is greater than one, the access network device will select an SRS resource with the best channel conditions from multiple SRS resources and indicate it to the terminal through the SRS resource indicator (SRI) field in the downlink control information (DCI). In addition to this support, the access network device will also calculate the precoding matrix for uplink transmission based on the channel measurement result of the selected SRS resource and indicate it to the terminal. After receiving the indication information, the terminal sends the physical uplink shared channel (PUSCH) according to the indicated SRS resource and precoding matrix.

[0097] It should be understood that the current standard supports transmission with uplink antenna ports of 1T, 2T, 4T, and 8T. Correspondingly, the protocol defines SRS resources with 1, 2, 4, and 8 ports (SRS ports may be referred to as ports in this application) respectively. For example, if a terminal has 2T uplink transmit antenna ports, the access network device can configure an SRS resource set with a usage of codebook for the terminal. This SRS resource set includes one or two SRS resources, each containing 2 ports. The access network device can measure the 2T channel based on the 2-port SRS in the SRS resource set and calculate the precoding matrix to indicate to the terminal. With the development of communication technology, future terminals may support transmission of codebooks with 3T uplink antenna ports, but the current protocol does not support the configuration of SRS resources containing 3 ports. After careful research, it was found that a possible implementation of 3Tx SRS resources is to configure two SRS resources containing 2 SRS ports in an SRS resource set, and restrict or configure a certain SRS port to not transmit the SRS resource. It should be noted that when two SRS resources containing two SRS ports are configured in an SRS resource set, the power value will be linearly distributed to the four configured SRS ports according to the current protocol practice. This will cause the SRS transmission power to be allocated to the port that does not actually send SRS resources, resulting in power waste.

[0098] Based on this, the present application proposes a communication method, which defines a power control mechanism for 3Tx transmission of a codebook, which can minimize power waste and is conducive to improving communication performance.

[0099] The communication method and communication device provided by this application are described in detail below:

[0100] Please refer to Figure 2, which is a flow chart of the communication method provided by an embodiment of the present application. The execution subject of the method shown in Figure 2 can be an access network device, or a terminal. Alternatively, the execution subject of the method shown in Figure 2 can also be an access network device, or a chip in the terminal. For the convenience of description, this application is mainly explained with the access network device or the terminal as the execution subject. It should be understood that Figure 2 is a schematic flow chart of an embodiment of the method of the present application, which shows the detailed communication steps or operations of the method, but these steps or operations are only examples. The embodiment of the present application can also perform other operations or variations of the various operations in Figure 2. In addition, the various steps in Figure 2 can be executed in a different order from that presented in Figure 2, and it may not be necessary to execute all the operations in Figure 2. As shown in Figure 2, the communication method may include the following steps:

[0101] S201: The access network device sends configuration information to the terminal. Correspondingly, the terminal receives the configuration information from the access network device.

[0102] The configuration information is used to configure an SRS resource set for codebook transmission, or is referred to as the configuration information for configuring an SRS resource set for codebook transmission. The SRS resource set includes two SRS resources, namely a first SRS resource and a second SRS resource, wherein the first SRS resource includes SRS port 1 and SRS port 2, and the second SRS resource includes SRS port 3 and SRS port 4. Here, SRS port 1, SRS port 2, SRS port 3 and SRS port 4 are used to distinguish the SRS ports in different SRS resources, which are not necessarily the actual numbers of the SRS ports. For example, in a possible implementation, the numbers of SRS port 1 and SRS port 2 in the first SRS resource can be 1000 and 1001 respectively, and the numbers of SRS port 3 and SRS port 4 in the second SRS resource can be 1000 and 1001 respectively. As another example, in another possible implementation, SRS port 1 and SRS port 2 in the first SRS resource may be numbered 1001 and 1000 respectively, and SRS port 3 and SRS port 4 in the second SRS resource may be numbered 1001 and 1000 respectively, which is not limited in this application.

[0103] It should be understood that the above configuration information may be carried in higher layer signaling, such as radio resource control (RRC) signaling.

[0104] Optionally, in some feasible implementations, the terminal may also report / send capability information to the access network device, indicating the terminal's ability to support transmission on three antenna ports. Specifically, before step S201, the terminal may report its ability to support transmission on three antenna ports to the access network device. Accordingly, the access network device receives the terminal's capability information and, if it determines that the terminal supports transmission on three antenna ports, sends configuration information to the terminal. In yet another embodiment, the terminal may determine to use transmission on three antenna ports, or to enter a state of transmission on three antenna ports, based on information such as the configuration.

[0105] S202: When SRS port 1, SRS port 2 and SRS port 3 are transmitting, the terminal evenly distributes the SRS transmission power of SRS port 1, SRS port 2 and SRS port 3 based on the total SRS transmission power.

[0106] Here, the transmission of SRS port 1, SRS port 2, and SRS port 3 can be specifically understood as the transmission of SRS port 1, SRS port 2, and SRS port 3, and the non-transmission of SRS port 4; or described as the case where only SRS port 1, SRS port 2, and SRS port 3 transmit; or described as the case where there is one SRS resource among the two SRS resources and only one SRS port transmits; or described as the case where there is one SRS port among the four SRS ports that does not transmit; or described as the case where only three SRS ports among the four SRS ports transmit. It should be understood that which SRS ports transmit / which SRS ports do not transmit can be predefined or network configured, and this application does not limit it. The predefined here can be predefined by the protocol and is not limited. For the convenience of description, the following mainly uses the definition of which SRS ports transmit as an example for schematic explanation. For example, the access network device may send first indication information to the terminal, where the first indication information indicates that SRS port 1, SRS port 2, and SRS port 3 are to be sent, or the protocol predefines that SRS port 1, SRS port 2, and SRS port 3 are to be sent. Exemplarily, the first indication information may be carried in higher-layer signaling, such as RRC signaling. Optionally, the configuration information and the first indication information may be carried in the same RRC signaling, or the configuration information and the first indication information may be carried in two separate RRC signalings, without limitation.

[0107] As described in S201 above, SRS port 1, SRS port 2, SRS port 3, and SRS port 4 are only used to distinguish the SRS ports in different SRS resources, and are not the numbers of the SRS ports. Based on this, the situations in which SRS port 1, SRS port 2, and SRS port 3 are sent can include the following two situations: 1. The SRS ports numbered 1000, 1001 in the first SRS resource, and numbered 1000 in the second SRS resource are sent (or the SRS port numbered 1001 in the second SRS resource is not sent); 2. The SRS ports numbered 1000, 1001 in the first SRS resource, and numbered 1001 in the second SRS resource are sent (or the SRS port numbered 1000 in the second SRS resource is not sent).

[0108] It should be understood that the above-mentioned average distribution of the SRS transmission power of SRS port 1, SRS port 2 and SRS port 3 based on the total SRS transmission power can also be replaced by the description that the SRS transmission power of SRS port 1, SRS port 2 and SRS port 3 is associated with the total SRS transmission power. Optionally, it can also be understood that SRS port 1, SRS port 2 and SRS port 3 all use the same SRS transmission power to send SRS to the access network device, wherein the SRS transmission power of any SRS port is associated with the total SRS transmission power. It should be noted that due to hardware errors, there may be errors in the actual SRS transmission power on SRS port 1, SRS port 2 and SRS port 3, that is, they are not absolutely the same. Within a certain error range, the SRS transmission power can be considered to be the same.

[0109] In some feasible implementation manners, the above-mentioned terminal averagely distributes the SRS transmit power of SRS port 1, SRS port 2, and SRS port 3 based on the total SRS transmit power, which can be specifically understood as: the terminal averagely distributes the SRS transmit power of SRS port 1, SRS port 2, and SRS port 3 based on the total SRS transmit power and the OFDM symbols occupied by the first SRS resource and the second SRS resource. Optionally, it can also be understood that the SRS transmit power of SRS port 1, SRS port 2, and SRS port 3 is associated with the OFDM symbols occupied by the first SRS resource and the second SRS resource. Alternatively, it can be understood that the SRS transmit power of SRS port 1, SRS port 2, and SRS port 3 is associated with the total SRS transmit power and the OFDM symbols occupied by the first SRS resource and the second SRS resource.

[0110] In one possible implementation, each SRS resource occupies one OFDM symbol. If the first SRS resource and the second SRS resource occupy the same OFDM symbol, the total SRS transmit power is evenly distributed to SRS port 1, SRS port 2, and SRS port 3. The total SRS transmit power is the transmit power of one OFDM symbol. That is, the SRS transmit power allocated to any one of SRS port 1, SRS port 2, and SRS port 3 satisfies the following conditions:

[0111] Where P is the transmit power of each SRS port, is the total SRS transmission power, Defined on this 1 OFDM symbol.

[0112] Optionally, if the access network device configures time domain repetition for the first SRS resource and the second SRS resource respectively and the number of OFDM symbols repeatedly transmitted by each SRS resource is N, where N is an integer greater than 1. When the N OFDM symbols occupied by the first SRS resource and the N OFDM symbols occupied by the second SRS resource are the same, the total SRS transmission power is It can be defined on the N OFDM symbols, that is, the total SRS transmission power is the sum of the transmission powers of N OFDM symbols, where the transmission power of each SRS port is In other words, the transmit power of each SRS port on each OFDM symbol is is the total SRS transmission power, Defined on 1 OFDM symbol.

[0113] In another possible implementation, each SRS resource occupies one OFDM symbol. When the OFDM symbols occupied by the first SRS resource and the second SRS resource are different, the SRS transmit power of each SRS port among SRS port 1, SRS port 2, and SRS port 3 is one-fourth of the total SRS transmit power (or the total SRS transmit power is evenly distributed among the four configured SRS ports). The total SRS transmit power is the sum of the transmit powers corresponding to the OFDM symbols occupied by the first SRS resource and the second SRS resource. That is, the SRS transmit power allocated to any one of SRS port 1, SRS port 2, and SRS port 3 satisfies:

[0114] Where P is the transmit power of each SRS port, is the total SRS transmission power, It is defined on the two OFDM symbols, that is, the total SRS transmission power is the sum of the transmission powers corresponding to the two OFDM symbols.

[0115] It can be understood that the SRS transmission power of each of the above-mentioned SRS port 1, SRS port 2 and SRS port 3 is one quarter of the total SRS transmission power, which can also be replaced by / equivalent to being described as / equivalent to being the SRS transmission power of each of the above-mentioned SRS port 1, SRS port 2 and SRS port 3 is half of the transmission power of 1 OFDM symbol.

[0116] Optionally, if the access network device configures time domain repetition for the first SRS resource and the second SRS resource respectively and the number of OFDM symbols repeatedly transmitted by each SRS resource is N, where N is an integer greater than 1. When the N OFDM symbols occupied by the first SRS resource and the N OFDM symbols occupied by the second SRS resource are different, the total SRS transmission power is It can be defined on 2N OFDM symbols, that is, the total SRS transmission power is the sum of the transmission power of 2N OFDM symbols, where the transmission power of each SRS port is In other words, the transmit power of each SRS port in each OFDM symbol is is the total SRS transmission power, Defined on 1 OFDM symbol.

[0117] It can be understood that, taking the example that both the first SRS resource and the second SRS resource occupy 1 OFDM symbol, the OFDM symbols occupied by the first SRS resource and the second SRS resource are different, there may be the following two situations: first, the OFDM symbol occupied by the first SRS resource and the OFDM symbol occupied by the first SRS resource are adjacent (or the OFDM symbol occupied by the first SRS resource and the OFDM symbol occupied by the first SRS resource are called 2 consecutive OFDM symbols); second, the OFDM symbol occupied by the first SRS resource and the OFDM symbol occupied by the first SRS resource are not adjacent (or the OFDM symbol occupied by the first SRS resource and the OFDM symbol occupied by the first SRS resource are called 2 non-continuous / discontinuous OFDM symbols).

[0118] Optionally, in some feasible implementations, when the access network device configures the terminal with the above-mentioned two SRS resources containing two SRS ports, if it is necessary to achieve the transmission of three SRS ports by not transmitting a certain SRS port, then it is also necessary to predefine the correspondence / mapping relationship between the SRS port number and the PUSCH port number. It should be understood that for 4Tx transmission, the mapping relationship between the SRS port and the PUSCH port is relatively direct. Specifically, the SRS port with an SRS port number of 1000 corresponds to the PUSCH port with a PUSCH port number of 1000, the SRS port with an SRS port number of 1001 corresponds to the PUSCH port with a PUSCH port number of 1001, the SRS port with an SRS port number of 1002 corresponds to the PUSCH port with a PUSCH port number of 1002, and the SRS port with an SRS port number of 1003 corresponds to the PUSCH port with a PUSCH port number of 1003. However, in 3Tx transmission, the SRS resource is composed of two SRS resources containing two SRS ports. Therefore, the SRS ports in each SRS resource are usually numbered 1000 / 1001, while the PUSCH ports are numbered 1000 / 1001 / 1002. If the mapping is confused, the performance of uplink data transmission will be impaired. Therefore, in the case of 3Tx transmission, this application also proposes a mapping relationship between SRS ports and PUSCH ports. Generally speaking, SRS ports and PUSCH ports have a one-to-one correspondence (or it is called that SRS ports and PUSCH ports have a one-to-one mapping relationship).

[0119] In one possible implementation, it is possible to predefine or configure SRS port 1 to correspond to PUSCH port 1, SRS port 2 to correspond to PUSCH port 2, and SRS port 3 to correspond to PUSCH port 3. The predefinition here may be predefined by a protocol. For example, the port number of the above-mentioned SRS port 1 is 1000, the port number of the SRS port 2 is 1001, and the port number of the SRS port 3 is 1000, or the port number of the SRS port 1 is 1000, the port number of the SRS port 2 is 1001, and the port number of the SRS port 3 is 1001. The port number of the above-mentioned PUSCH port 1 is 1000, the port number of the PUSCH port 2 is 1001, and the port number of the PUSCH port 3 is 1002. Taking the mapping relationship between the SRS port and the PUSCH port configured by the network as an example, the access network device can configure the corresponding relationship between the SRS port and the PUSCH port through high-layer signaling. For example, the access network device may send RRC signaling to the terminal, where the RRC signaling includes second indication information, where the second indication information indicates that SRS port 1 corresponds to PUSCH port 1, SRS port 2 corresponds to PUSCH port 2, and SRS port 3 corresponds to PUSCH port 3. Optionally, the configuration information, the first indication information, and the second indication information may be carried in the same RRC signaling and sent, or the configuration information, the first indication information, and the second indication information may be carried in different RRC signaling and sent, without limitation.

[0120] For example, as shown in Figure 3, assuming that the SRS port numbered 1001 of the second SRS resource is not sent, then the SRS port numbered 1000 in the first SRS resource can correspond to the PUSCH port numbered 1000, the SRS port numbered 1001 can correspond to the PUSCH port numbered 1001, and the SRS port numbered 1000 in the second SRS resource can correspond to the PUSCH port numbered 1002.

[0121] In another possible implementation, it is possible to predefine or configure SRS port 1 to correspond to PUSCH port 1, SRS port 2 to correspond to PUSCH port 2, and SRS port 3 to correspond to PUSCH port 3, and PUSCH port 1 and PUSCH port 2 have a coherent relationship. The predefinition may be predefined by a protocol and is not limited. For example, the port number of the above-mentioned SRS port 1 is 1000, the port number of the SRS port 2 is 1001, and the port number of the SRS port 3 is 1000, or the port number of the SRS port 1 is 1000, the port number of the SRS port 2 is 1001, and the port number of the SRS port 3 is 1001. The port number of the above-mentioned PUSCH port 1 is 1000, the port number of the PUSCH port 2 is 1002, and the port number of the PUSCH port 3 is 1001. This is because the antenna composition during 3Tx transmission may be in 2+1 mode, that is, two antennas are from frequency band A and the other antenna is from frequency band B. Therefore, the antenna corresponding to the actual transmission of the 2-port SRS resource has coherent transmission capability. Therefore, it is necessary to map the two SRS ports in the first SRS resource to two PUSCH ports with a coherent relationship respectively. This is conducive to improving the compatibility of the port mapping relationship when supporting partial coherent codebooks in the future.

[0122] For example, if the SRS port with SRS port number 1001 of the second SRS resource is not sent, then the SRS port with SRS port number 1000 in the first SRS resource can correspond to the PUSCH port with PUSCH port number 1000, and the SRS port with SRS port number 1001 can correspond to the PUSCH port with PUSCH port number 1002 (here the PUSCH port with PUSCH port number 1000 and the PUSCH port with PUSCH port number 1002 are antenna coherence groups, or have a coherent relationship), and the SRS port with SRS port number 1000 in the second SRS resource can correspond to the PUSCH port with PUSCH port number 1001.

[0123] The embodiment of the present application defines a power control mechanism in which two SRS resources including two SRS ports are configured in an SRS resource set for codebook transmission, and a protocol restricts or configures a certain SRS port not to send (or a protocol restricts or configures three SRS ports to send). This can avoid the SRS transmission power being allocated to the port that is not actually sent, thereby increasing the SRS transmission power of each SRS port that is actually sent, which is beneficial to improving communication performance.

[0124] In one embodiment, the total transmission power of the SRS is It may also be associated with other parameters, such as but not limited to bandwidth part (BWP), carrier f, serving cell c and other parameters, which are not further limited in this application.

[0125] The communication device provided in this application will be described in detail below with reference to FIG. 4 and FIG. 5 .

[0126] It is understood that in order to implement the functions in the above embodiments, the communication device includes hardware structures and / or software modules corresponding to the execution of each function. It should be readily apparent to those skilled in the art that, in combination with the units and method steps of each example described in the embodiments disclosed in this application, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in hardware or in a manner driven by computer software depends on the specific application scenario and design constraints of the technical solution.

[0127] Figures 4 and 5 are schematic diagrams of possible communication devices provided in embodiments of the present application. These communication devices can be used to implement the functions of a terminal or access network device (e.g., a base station) in the above-described method embodiments, thereby also achieving the beneficial effects of the above-described method embodiments. In the embodiments of the present application, the communication device can be one of the terminals 120a-120j shown in Figure 1, or it can be a RAN node 110a or 110b shown in Figure 1. Alternatively, it can be a module (e.g., a chip) applied to a terminal or access network device.

[0128] As shown in Figure 4, a communication device 400 includes a processing unit 410 and a transceiver unit 420. The communication device 400 is used to implement the functions of the terminal or access network device in the method embodiment shown in Figure 2 above.

[0129] In one implementation, when the communication device 400 is used to implement the functions of the terminal in the method embodiment shown in FIG3 :

[0130] The transceiver unit 420 is used to receive configuration information from the access network device, where the configuration information is used to configure a sounding reference signal SRS resource set for codebook transmission, where the SRS resource set includes a first SRS resource and a second SRS resource, where the first SRS resource includes SRS port 1 and SRS port 2, and the second SRS resource includes SRS port 3 and SRS port 4; the processing unit 410 is used to evenly distribute the SRS transmission power of the SRS port 1, the SRS port 2, and the SRS port 3 based on the total SRS transmission power when the SRS port 1, the SRS port 2, and the SRS port 3 are transmitting.

[0131] When the communication device 400 is used to implement the functions of the access network device in the method embodiment shown in FIG3 :

[0132] The transceiver unit 420 is used to send configuration information to the terminal, where the configuration information is used to configure an SRS resource set for codebook transmission, where the SRS resource set includes a first SRS resource and a second SRS resource, where the first SRS resource includes SRS port 1 and SRS port 2, and the second SRS resource includes SRS port 3 and SRS port 4; the processing unit 410 is used to obtain channel state information based on the transmission on SRS port 1, the SRS port 2, and the SRS port 3.

[0133] For a more detailed description of the processing unit 410 and the transceiver unit 420 , reference may be made to the relevant description in the method embodiment shown in FIG. 2 .

[0134] As shown in Figure 5, communication device 500 includes a processor 510 and an interface circuit 520. Processor 510 and interface circuit 520 are coupled to each other. It is understood that interface circuit 520 can be a transceiver or an input / output interface. Optionally, communication device 500 may also include a memory 530 for storing instructions executed by processor 510, input data required by processor 510 to execute instructions, or data generated after processor 510 executes instructions.

[0135] When the communication device 500 is used to implement the method shown in FIG. 2 , the processor 510 is used to implement the functions of the processing unit 410 , and the interface circuit 520 is used to implement the functions of the transceiver unit 420 .

[0136] When the communication device is a chip used in a terminal, the terminal chip implements the functions of the terminal in the above method embodiments. The terminal chip receives information sent to the terminal by the access network device through other modules in the terminal (such as a radio frequency module or antenna); or the terminal chip sends information to other modules in the terminal (such as a radio frequency module or antenna), and the information is sent by the terminal to the access network device.

[0137] When the above-mentioned communication device is a module applied to an access network device, the access network device module implements the functions of the access network device in the above-mentioned method embodiment. The access network device module receives information from other modules in the access network device (such as a radio frequency module or an antenna), and the information is sent by the terminal to the access network device; or, the access network device module sends information to other modules in the access network device (such as a radio frequency module or an antenna), and the information is sent by the access network device to the terminal. The access network device module here can be a baseband chip of the access network device, or a CU, DU or other module, or a device under the open radio access network (O-RAN) architecture, such as an open CU, open DU and other devices.

[0138] It is understood that the processor in the embodiments of the present application may be a central processing unit (CPU), or may be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. The general-purpose processor may be a microprocessor or any conventional processor.

[0139] The method steps in the embodiments of the present application can be implemented in hardware or in software instructions that can be executed by a processor. The software instructions can be composed of corresponding software modules, and the software modules can be stored in random access memory, flash memory, read-only memory, programmable read-only memory, erasable programmable read-only memory, electrically erasable programmable read-only memory, registers, hard disk, mobile hard disk, CD-ROM or any other form of storage medium well known in the art. An exemplary storage medium is coupled to the processor so that the processor can read information from the storage medium and write information to the storage medium. The storage medium can also be an integral part of the processor. The processor and storage medium can be located in an ASIC. In addition, the ASIC can be located in an access network device or a terminal. The processor and storage medium can also exist in an access network device or a terminal as discrete components.

[0140] In the above embodiments, all or part of the embodiments may be implemented using software, hardware, firmware, or any combination thereof. When implemented using software, all or part of the embodiments may be implemented in the form of a computer program product. The computer program product includes one or more computer programs or instructions. When the computer program or instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present application are performed in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, a network device, a user device, or other programmable device. The computer program or instructions may be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another. For example, the computer program or instructions may be transferred from one website, computer, server, or data center to another website, computer, server, or data center via wired or wireless means. The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or data center that integrates one or more available media. The available medium may be a magnetic medium, such as a floppy disk, hard disk, or magnetic tape; an optical medium, such as a digital video disk; or a semiconductor medium, such as a solid-state drive. The computer-readable storage medium may be a volatile or nonvolatile storage medium, or may include both volatile and nonvolatile types of storage media.

[0141] In the various embodiments of the present application, unless otherwise specified or there is a logical conflict, the terms and / or descriptions between different embodiments are consistent and can be referenced by each other. The technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationships.

[0142] It is understood that the various numbers used in the embodiments of this application are merely for ease of description and are not intended to limit the scope of the embodiments of this application. The order of the sequence numbers of the above-mentioned processes does not necessarily imply a specific order of execution; the order of execution of the processes should be determined by their functions and inherent logic.

Claims

1. A communication method, characterized in that: include: receiving configuration information from an access network device, the configuration information being used to configure a sounding reference signal (SRS) resource set for codebook transmission, the SRS resource set comprising a first SRS resource and a second SRS resource, the first SRS resource comprising an SRS port 1 and an SRS port 2, and the second SRS resource comprising an SRS port 3 and an SRS port 4; In the case where the SRS port 1, the SRS port 2 and the SRS port 3 are transmitting, the SRS transmission powers of the SRS port 1, the SRS port 2 and the SRS port 3 are evenly distributed based on the total SRS transmission power.

2. The method according to claim 1, characterized in that The evenly allocating the SRS transmit power of the SRS port 1, the SRS port 2, and the SRS port 3 based on the total SRS transmit power includes: The SRS transmission powers of the SRS port 1, the SRS port 2, and the SRS port 3 are evenly distributed based on the total SRS transmission power and the orthogonal frequency division multiplexing (OFDM) symbols occupied by the first SRS resource and the second SRS resource.

3. The method according to claim 2, characterized in that Each SRS resource occupies one OFDM symbol. When the OFDM symbols occupied by the first SRS resource and the second SRS resource are the same, the total SRS transmit power is evenly distributed to the SRS port 1, the SRS port 2 and the SRS port 3, where the total SRS transmit power is the transmit power of the one OFDM symbol.

4. The method according to claim 2, characterized in that Each SRS resource occupies one OFDM symbol. In the case where the OFDM symbols occupied by the first SRS resource and the second SRS resource are different, The SRS transmission power of each of the SRS port 1, the SRS port 2, and the SRS port 3 is one quarter of the total SRS transmission power, where the total SRS transmission power is the sum of the transmission powers corresponding to the OFDM symbols occupied by the first SRS resource and the second SRS resource; or The SRS transmission power of each of the SRS port 1, the SRS port 2, and the SRS port 3 is half of the transmission power of one OFDM symbol.

5. The method according to any one of claims 1 to 4, characterized in that The method further comprises: receiving first indication information from the access network device, where the first indication information instructs the SRS port 1, the SRS port 2, and the SRS port 3 to send; or, The transmission of the SRS port 1, the SRS port 2, and the SRS port 3 is predefined.

6. The method according to any one of claims 1 to 5, characterized in that The SRS ports correspond to physical uplink shared channel PUSCH ports one by one, the SRS port 1 corresponds to PUSCH port 1, the SRS port 2 corresponds to PUSCH port 2, and the SRS port 3 corresponds to PUSCH port 3; the PUSCH port 1 and the PUSCH port 2 have a coherent relationship.

7. The method according to claim 6, characterized in that The port number of the SRS port 1 is 1000, the port number of the SRS port 2 is 1001, and the port number of the SRS port 3 is 1000, or the port number of the SRS port 1 is 1000, the port number of the SRS port 2 is 1001, and the port number of the SRS port 3 is 1001; the port number of the PUSCH port 1 is 1000, the port number of the PUSCH port 2 is 1002, and the port number of the PUSCH port 3 is 1001.

8. The method according to claim 6 or 7, characterized in that The method further comprises: Second indication information is received from the access network device, where the second indication information indicates that the SRS port 1 corresponds to the PUSCH port 1, the SRS port 2 corresponds to the PUSCH port 2, and the SRS port 3 corresponds to the PUSCH port 3.

9. The method according to any one of claims 1 to 8, characterized in that The method further comprises: Capability information is sent to the access network device, where the capability information indicates a capability of the terminal to support transmission via three antenna ports.

10. A communication device, characterized in that: include: a transceiver unit, configured to receive configuration information from an access network device, the configuration information being used to configure a sounding reference signal (SRS) resource set for codebook transmission, the SRS resource set comprising a first SRS resource and a second SRS resource, the first SRS resource comprising an SRS port 1 and an SRS port 2, and the second SRS resource comprising an SRS port 3 and an SRS port 4; The processing unit is configured to, when the SRS port 1, the SRS port 2 and the SRS port 3 are transmitting, evenly distribute the SRS transmission power of the SRS port 1, the SRS port 2 and the SRS port 3 based on the total SRS transmission power.

11. The device according to claim 10, characterized in that The evenly allocating the SRS transmit power of the SRS port 1, the SRS port 2, and the SRS port 3 based on the total SRS transmit power includes: The SRS transmission powers of the SRS port 1, the SRS port 2, and the SRS port 3 are evenly distributed based on the total SRS transmission power and the orthogonal frequency division multiplexing (OFDM) symbols occupied by the first SRS resource and the second SRS resource.

12. The device according to claim 11, characterized in that Each SRS resource occupies one OFDM symbol. When the OFDM symbols occupied by the first SRS resource and the second SRS resource are the same, the total SRS transmit power is evenly distributed to the SRS port 1, the SRS port 2 and the SRS port 3, where the total SRS transmit power is the transmit power of the one OFDM symbol.

13. The device according to claim 11, characterized in that Each SRS resource occupies one OFDM symbol. When the OFDM symbols occupied by the first SRS resource and the second SRS resource are different, the SRS transmit power of each of the SRS port 1, the SRS port 2, and the SRS port 3 is one-fourth of the total SRS transmit power, where the total SRS transmit power is the sum of the transmit powers corresponding to the OFDM symbols occupied by the first SRS resource and the second SRS resource; or The SRS transmission power of each of the SRS port 1, the SRS port 2, and the SRS port 3 is half of the transmission power of one OFDM symbol.

14. The device according to any one of claims 10 to 13, characterized in that The transceiver unit is configured to receive first indication information from the access network device, where the first indication information instructs the SRS port 1, the SRS port 2, and the SRS port 3 to send; or The transmission of the SRS port 1, the SRS port 2, and the SRS port 3 is predefined.

15. The device according to any one of claims 10 to 14, characterized in that The SRS ports correspond to physical uplink shared channel PUSCH ports one by one, the SRS port 1 corresponds to PUSCH port 1, the SRS port 2 corresponds to PUSCH port 2, and the SRS port 3 corresponds to PUSCH port 3; the PUSCH port 1 and the PUSCH port 2 have a coherent relationship.

16. The device according to claim 15, characterized in that The port number of the SRS port 1 is 1000, the port number of the SRS port 2 is 1001, and the port number of the SRS port 3 is 1000, or the port number of the SRS port 1 is 1000, the port number of the SRS port 2 is 1001, and the port number of the SRS port 3 is 1001; the port number of the PUSCH port 1 is 1000, the port number of the PUSCH port 2 is 1002, and the port number of the PUSCH port 3 is 1001.

17. The device according to claim 15 or 16, characterized in that The transceiver unit is further configured to: Second indication information is received from the access network device, where the second indication information indicates that the SRS port 1 corresponds to the PUSCH port 1, the SRS port 2 corresponds to the PUSCH port 2, and the SRS port 3 corresponds to the PUSCH port 3.

18. The device according to any one of claims 10 to 17, characterized in that The transceiver unit is further configured to: Capability information is sent to the access network device, where the capability information indicates a capability of the terminal to support transmission via three antenna ports.

19. A communication device, characterized in that: The method comprises a processor and an interface circuit, wherein the interface circuit is used to receive signals from other communication devices outside the communication device and transmit them to the processor or send signals from the processor to other communication devices outside the communication device, and the processor is used to implement the method according to any one of claims 1 to 9 through a logic circuit or by executing code instructions, or to implement the method according to any one of claims 10 to 18.

20. A computer-readable storage medium, characterized in that The storage medium stores a computer program or instruction. When the computer program or instruction is executed by the communication device, the method according to any one of claims 1 to 9 is implemented, or the method according to any one of claims 10 to 18 is implemented.

21. A computer program product, characterized in that The method comprises a computer program code, and when the computer program code is run on a computer, the method according to any one of claims 1 to 9 is implemented, or the method according to any one of claims 10 to 18 is implemented.

Images