Reference signal sending method, reference signal receiving method, and related apparatus

Abstract

The present application discloses a reference signal sending method, a reference signal receiving method, and a related apparatus. The reference signal sending method comprises: sending a reference signal on the basis of NR reference signal resources and a first correspondence, or, sending a reference signal on the basis of the NR reference signal resources and a second correspondence, wherein each reference signal resource among the NR reference signal resources comprises one or more reference signal ports, NR is an integer greater than or equal to 1, the first correspondence comprises a correspondence between the NR reference signal resources and a beam corresponding to each antenna port of a terminal device, and a correspondence between the one or more reference signal ports comprised in each reference signal resource and one or more antenna ports of the terminal device, and the second correspondence comprises a correspondence between the NR reference signal resources and the one or more antenna ports of the terminal device, and a correspondence between the one or more reference signal ports comprised in each reference signal resource and the beam corresponding to each antenna port.

Description

Reference signal sending method, reference signal receiving method and related devices

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office on July 26, 2023, with application number 202310930077.8 and invention name “Reference signal sending method, reference signal receiving method and related devices”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The embodiments of the present application relate to the field of communication technologies, and in particular to a reference signal sending method, a reference signal receiving method, and related devices. Background Art

[0003] Fifth-generation mobile communication systems (5G) utilize high-frequency communication, specifically ultra-high frequency (>6 GHz) signals, to transmit data. A major issue with high-frequency communication is that signal energy decreases dramatically with transmission distance, resulting in a short transmission distance. To overcome this, high-frequency communication employs simulated beamforming technology. This technology weights the antenna array to concentrate signal energy within a narrow angular range, creating a beam-like signal (called a simulated beam, or simply beamforming), thereby increasing transmission distance.

[0004] In uplink data transmission, in order to improve transmission performance, the terminal device needs to use a beam and codebook with better signal quality for uplink transmission. Specifically, the terminal device can determine a beam with better signal quality through the uplink beam management process. The network device can configure multiple sounding reference signal (SRS) resources for beam management for the terminal device, and each SRS resource corresponds to a beam of the terminal device. The terminal device uses the beam corresponding to each SRS resource to send the SRS. The network device measures the SRS on each SRS resource to obtain the quality of the beam corresponding to each SRS resource, thereby selecting a beam with better signal quality for uplink transmission. Then, the network device can indicate the beam with better signal quality to the terminal device. The codebook is determined by the network device by measuring the SRS. Specifically, the network device can configure an SRS resource for codebook measurement for the terminal device, and instruct the terminal device to use the beam with better signal quality to send the SRS corresponding to the SRS resource. The terminal device uses the beam with better signal quality to send the SRS corresponding to the SRS resource, and the network device measures the SRS corresponding to the SRS resource to determine the appropriate codebook. The network device then indicates the codebook to the terminal device.

[0005] It can be seen from this that beam determination and codebook determination are two independent processes. The two independent processes are executed sequentially, resulting in large and complex process delays, which in turn leads to low uplink transmission efficiency.

[0006] Summary of the Invention

[0007] The present application provides a reference signal sending method, a reference signal receiving method, and related devices, for a terminal device to send a reference signal to a network device based on NR reference signal resources and a first corresponding relationship, or a terminal device to send a reference signal to a network device based on NR reference signal resources and a second corresponding relationship. This facilitates the network device to determine the channel quality of each beam corresponding to each antenna port by measuring the reference signal, and facilitates the network device to select the beam and codebook for uplink transmission based on the channel quality of each beam corresponding to each antenna port. That is, the network device can determine the beam and codebook for uplink transmission in a single measurement process. This improves the uplink transmission efficiency.

[0008] The first aspect of the present application provides a reference signal sending method, which is performed by a terminal device. The terminal device may be a device or apparatus with a chip, or a device or apparatus with an integrated circuit, or a chip, chip system, module, or control unit in the aforementioned device or apparatus, and the present application does not limit this. It should be noted that in the present application, when referring to a terminal device, it may refer to the terminal device itself, or to a chip, functional module or integrated circuit in the terminal device that completes the method provided by the present application, and the present application does not limit this. In the first aspect and its possible implementation methods, the method is described as being performed by a terminal device. The method includes:

[0009] Terminal equipment according to N R Reference signal resources and the first corresponding relationship send a reference signal to the network device, or the terminal device sends a reference signal according to N R Reference signal resources and the second corresponding relationship send a reference signal to the network device; wherein N R is an integer greater than or equal to 1; the terminal device includes one or more antenna ports, and the first corresponding relationship includes N R The corresponding relationship between the reference signal resources and the beams corresponding to each antenna port of the terminal device, and the corresponding relationship between one or more reference signal ports included in each reference signal resource and one or more antenna ports; the second corresponding relationship includes N R The corresponding relationship between each reference signal resource and one or more antenna ports, and the corresponding relationship between one or more reference signal ports included in each reference signal resource and the beam corresponding to each antenna port of the terminal device.

[0010] From the above technical solution, it can be seen that the terminal device passes N RThe reference signal resource and the first correspondence are used to send a reference signal. This facilitates the network device to determine the channel quality of each beam corresponding to each antenna port by measuring the reference signal, and facilitates the network device to select the beam and codebook for uplink transmission based on the channel quality of each beam corresponding to each antenna port. In other words, the network device can determine the beam and codebook for uplink transmission in a single measurement process. There is no need to use multiple independent processes to determine the beam and codebook for uplink transmission. This reduces the complexity and latency of the process, thereby improving uplink transmission efficiency.

[0011] Based on the first aspect, in a possible implementation manner, the method further includes: the terminal device receives first configuration information from the network device, the first configuration information is used to configure the N R Reference signal resources, N R Each reference signal resource includes one or more reference signal ports. In this implementation, the terminal device can configure N R Reference signal resources. R A reference signal resource is used to send a reference signal.

[0012] The second aspect of the present application provides a configuration method, which is executed by a terminal device. The terminal device may be a device or apparatus with a chip, or a device or apparatus with an integrated circuit, or a chip, chip system, module, or control unit in the aforementioned device or apparatus, and the present application does not limit this. It should be noted that in the present application, when referring to a terminal device, it may refer to the terminal device itself, or to a chip, functional module or integrated circuit in the terminal device that completes the method provided by the present application, and the present application does not limit this. In the second aspect and its possible implementation methods, the method is described as being executed by a terminal device. The method includes:

[0013] The terminal device receives first configuration information from the network device; wherein the first configuration information is used to configure N R Reference signal resources, the terminal device includes one or more antenna ports, N R Each reference signal resource in the reference signal resources includes one or more reference signal ports, N R The reference signal resources correspond to the beams corresponding to each antenna port of the terminal device, and the one or more reference signal ports included in each reference signal resource correspond to the one or more antenna ports of the terminal device; or, N R The reference signal resources correspond to one or more antenna ports of the terminal device, and the one or more reference signal ports included in each reference signal resource correspond to the beam corresponding to each antenna port of the terminal device; N R is an integer greater than or equal to 1.

[0014] From the above technical solution, it can be seen that the network device is configured as N R There is a corresponding relationship between the reference signal resources and the antenna ports or beams, and there is a corresponding relationship between the reference signal ports and the antenna ports or beams. R Using a reference signal resource to send a reference signal to a network device allows the network device to determine the channel quality of each beam corresponding to each antenna port by measuring the reference signal. This facilitates the network device to select the beam and codebook for uplink transmission based on the channel quality of each beam corresponding to each antenna port. This means that the network device can determine the beam and codebook for uplink transmission in a single measurement process. This eliminates the need to use multiple independent processes to determine the beam and codebook for uplink transmission. This reduces process complexity and latency, thereby improving uplink transmission efficiency.

[0015] Based on the second aspect, in a possible implementation manner, the method further includes: the terminal device according to N R Reference signal resources and the first corresponding relationship send a reference signal to the network device, or the terminal device sends a reference signal according to N R Reference signal resources and the second corresponding relationship send a reference signal to the network device; wherein the first corresponding relationship includes N R The corresponding relationship between the reference signal resources and the beams corresponding to each antenna port of the terminal device, and the corresponding relationship between one or more reference signal ports included in each reference signal resource and one or more antenna ports; the second corresponding relationship includes N R The correspondence between each reference signal resource and one or more antenna ports, and the correspondence between one or more reference signal ports included in each reference signal resource and the beam corresponding to each antenna port of the terminal device. This makes it easier for the network device to determine the channel quality of each beam corresponding to each antenna port by measuring the reference signal, and facilitates the network device to select the beam and codebook for uplink transmission according to the channel quality of each beam corresponding to each antenna port. That is, the network device can determine the beam and codebook for uplink transmission in a single measurement process. There is no need to use multiple independent processes to achieve the determination of the beam and codebook for uplink transmission. This reduces the complexity and delay of the process, thereby improving the uplink transmission efficiency.

[0016] Based on the first aspect or the second aspect, in a possible implementation, the method further includes: the terminal device receives at least one of the following from the network device: first information, second information, or third information; wherein the first information indicates the antenna port used for uplink transmission, the second information indicates the beam used by each antenna port for uplink transmission, and the third information indicates the codebook used for uplink transmission. It can be seen that the terminal device can obtain at least one of the following: the first information, the second information, or the third information. Thereby, the terminal device determines the antenna port, the beam used by each antenna port, and the codebook in combination with the first information, the second information, and / or the third information, and performs uplink transmission with the network device. Thereby, the uplink transmission efficiency is improved and the uplink transmission performance is improved.

[0017] Based on the first aspect or the second aspect, in a possible implementation manner, the uplink transmission includes at least one of the following: physical uplink shared channel (PUSCH) transmission, physical uplink control channel (PUCCH) transmission, or sounding reference signal (SRS) transmission.

[0018] Based on the first aspect or the second aspect, in one possible implementation, the method further includes: the terminal device sending capability information to the network device, where the capability information includes at least one of the following: the number of antenna ports of the terminal device, the number of beams corresponding to each antenna port of the terminal device, the number of antenna ports supported by the terminal device for simultaneous transmission, one or more first antenna port combinations supported by the terminal device, or corresponding relationships supported by the terminal device; the corresponding relationships supported by the terminal device include one or more of the first corresponding relationships and the second corresponding relationships. In this implementation, the terminal device reports the capability information to the network device, thereby facilitating the network device to configure appropriate reference signal resources for the terminal device and facilitating the transmission of reference signals between the terminal device and the network device to measure the channel quality of each beam of each antenna port.

[0019] The third aspect of the present application provides a reference signal receiving method, which is performed by a network device. The network device may be a device or apparatus with a chip, or a device or apparatus with an integrated circuit, or a chip, chip system, module or control unit in the aforementioned device or apparatus, and the present application does not limit this. It should be noted that in the present application, when referring to a network device, it may refer to the network device itself, or to a chip, functional module or integrated circuit in the network device that completes the method provided in the present application, and the present application does not limit this. In the third aspect and its possible implementation methods, the method is described as being performed by a network device. The method includes:

[0020] The network device receives a reference signal from the terminal device; wherein the reference signal is a signal generated by the terminal device according to N R Reference signal resources and the first corresponding relationship are sent, or the terminal device sends N R Reference signal resources and the second corresponding relationship are sent; N R Each reference signal resource in the reference signal resources includes one or more reference signal ports, N R is an integer greater than or equal to 1; the terminal device includes one or more antenna ports; the first corresponding relationship includes N R The corresponding relationship between the reference signal resources and the beams corresponding to each antenna port of the terminal device, and the corresponding relationship between one or more reference signal ports included in each reference signal resource and one or more antenna ports; the second corresponding relationship includes N R The corresponding relationship between each reference signal resource and one or more antenna ports, and the corresponding relationship between one or more reference signal ports included in each reference signal resource and the beam corresponding to each antenna port of the terminal device.

[0021] From the above technical solution, it can be seen that the network device receives the reference signal from the terminal device. The reference signal is a signal transmitted by the terminal device according to N R Reference signal resources and the first corresponding relationship are sent, or the terminal device sends N R The reference signal resource and the second corresponding relationship are sent. This facilitates the network device to determine the channel quality of each beam corresponding to each antenna port by measuring the reference signal, and facilitates the network device to select the beam and codebook for uplink transmission based on the quality of each beam corresponding to each antenna port. In other words, the network device can determine the beam and codebook for uplink transmission in a single measurement process. There is no need to use multiple independent processes to determine the beam and codebook for uplink transmission. This reduces the complexity and latency of the process, thereby improving uplink transmission efficiency.

[0022] Based on the third aspect, in a possible implementation, the network device sends first configuration information to the terminal device, and the first configuration information is used to configure the N R Reference signal resources. Thus, the terminal device can R The reference signal resource is used to send a reference signal to the network device.

[0023] The fourth aspect of the present application provides a configuration method, which is performed by a network device. The network device may be a device or apparatus with a chip, or a device or apparatus with an integrated circuit, or a chip, chip system, module or control unit in the aforementioned device or apparatus, and this application does not limit this. It should be noted that in this application, when referring to a network device, it may refer to the network device itself, or to a chip, functional module or integrated circuit in the network device that completes the method provided in this application, and this application does not limit this. In the fourth aspect and its possible implementation methods, the method is described as being performed by a network device. Including:

[0024] The network device sends the first configuration information to the terminal device; wherein the first configuration information is used to configure N R Reference signal resources, the terminal device includes one or more antenna ports, N R Each reference signal resource in the reference signal resources includes one or more reference signal ports, N R The reference signal resources correspond to the beams corresponding to each antenna port of the terminal device, and the one or more reference signal ports included in each reference signal resource correspond to the one or more antenna ports of the terminal device; or, N R The reference signal resources correspond to one or more antenna ports of the terminal device, and the one or more reference signal ports included in each reference signal resource correspond to the beam corresponding to each antenna port of the terminal device; N R is an integer greater than or equal to 1. It can be seen that the network device is configured for the terminal device N R There is a corresponding relationship between the reference signal resources and the antenna ports or beams, and there is a corresponding relationship between the reference signal ports and the antenna ports or beams. R Using a reference signal resource to send a reference signal to a network device allows the network device to determine the channel quality of each beam corresponding to each antenna port by measuring the reference signal. This facilitates the network device to select the beam and codebook for uplink transmission based on the channel quality of each beam corresponding to each antenna port. This means that the network device can determine the beam and codebook for uplink transmission in a single measurement process. This eliminates the need to use multiple independent processes to determine the beam and codebook for uplink transmission. This reduces process complexity and latency, thereby improving uplink transmission efficiency.

[0025] Based on the fourth aspect, in a possible implementation manner, the method further includes: the network device receives a reference signal from the terminal device; wherein the reference signal is a signal received by the terminal device according to N R Reference signal resources and the first corresponding relationship are sent, or the terminal device sends N R Reference signal resources and the second corresponding relationship are sent; the first corresponding relationship includes NR The corresponding relationship between the reference signal resources and the beams corresponding to each antenna port of the terminal device, and the corresponding relationship between one or more reference signal ports included in each reference signal resource and one or more antenna ports; the second corresponding relationship includes N R The correspondence between each reference signal resource and one or more antenna ports, and the correspondence between one or more reference signal ports included in each reference signal resource and the beam corresponding to each antenna port of the terminal device. This makes it easier for the network device to determine the channel quality of each beam corresponding to each antenna port by measuring the reference signal, and facilitates the network device to select the beam and codebook for uplink transmission according to the channel quality of each beam corresponding to each antenna port. That is, the network device can determine the beam and codebook for uplink transmission in a single measurement process. There is no need to use multiple independent processes to achieve the determination of the beam and codebook for uplink transmission. This reduces the complexity and delay of the process, thereby improving the uplink transmission efficiency.

[0026] Based on the third aspect or the fourth aspect, in one possible implementation, the method further includes: the network device sending at least one of the following to the terminal device: first information, second information, or third information; wherein the first information indicates the antenna port used for uplink transmission, the second information indicates the beam used by each antenna port used for uplink transmission, and the third information indicates the codebook used for uplink transmission. The terminal device thereby determines the antenna port, the beam used by each antenna port, and the codebook based on the first information, the second information, and / or the third information, and performs uplink transmission with the network device. This improves uplink transmission efficiency and improves uplink transmission performance.

[0027] Based on the third aspect or the fourth aspect, in a possible implementation manner, uplink transmission includes at least one of the following: PUSCH transmission, PUCCH transmission, or SRS transmission.

[0028] Based on the third aspect or the fourth aspect, in one possible implementation, the method further includes: the network device receiving capability information from the terminal device, the capability information including at least one of the following: the number of antenna ports of the terminal device, the number of beams corresponding to each antenna port of the terminal device, the number of antenna ports supported by the terminal device for simultaneous transmission, one or more first antenna port combinations supported by the terminal device, or corresponding relationships supported by the terminal device; the corresponding relationships supported by the terminal device include one or more of the first corresponding relationships and the second corresponding relationships. In this implementation, the network device obtains the capability information of the terminal device, thereby facilitating the network device to configure appropriate reference signal resources for the terminal device and facilitating the transmission of reference signals between the terminal device and the network device to measure the channel quality of each beam of each antenna port.

[0029] Based on any one of the first to fourth aspects, in one possible implementation, in one or more first antenna port combinations, multiple antenna ports in the same first antenna port combination are not used for simultaneous transmission, and / or multiple antenna ports in different first antenna port groups can be used for simultaneous transmission; or, in one or more first antenna port combinations, multiple antenna ports in the same first antenna port combination can be used for simultaneous transmission, and / or multiple antenna ports in different first antenna port combinations are not used for simultaneous transmission. In this implementation, two possible implementations are defined for determining whether the antenna ports in the one or more first antenna port combinations support simultaneous transmission.

[0030] Based on any one of the first to fourth aspects, in one possible implementation, the first information includes a first bitmap, the bits in the first bitmap correspond to antenna ports of the terminal device, and the values ​​of the bits in the first bitmap are used to indicate whether to use the antenna port corresponding to the bit for uplink transmission. Thus, it can be seen that a specific implementation method for the first information indicating the antenna port used for uplink transmission is provided, thereby implementing the indication of the antenna port.

[0031] Based on any one of the first to fourth aspects, in a possible implementation, the first bitmap includes N bits, the N bits correspond one-to-one to the N antenna ports of the terminal device, and N is an integer greater than or equal to 1; when the value of one of the N bits is 1, it is used to indicate that the antenna port corresponding to the bit is used for uplink transmission; when the value of one of the N bits is 0, it is used to indicate that the antenna port corresponding to the bit is not used for uplink transmission; or, when the value of one of the N bits is 1, it is used to indicate that the antenna port corresponding to the bit is not used for uplink transmission; when the value of one of the N bits is 0, it is used to indicate that the antenna port corresponding to the bit is used for uplink transmission. It can be seen that one bit corresponds to one antenna port, so that the terminal device indicates whether to use the antenna port corresponding to the bit through the value of the bit, thereby realizing the indication of the antenna port. Furthermore, it is also beneficial to reduce the indication overhead.

[0032] Based on any of aspects 1 to 4, in one possible implementation, the first information includes a first field, the value of the first field being used to indicate one of one or more second antenna port combinations, where the antenna ports included in the second antenna port combination are used for uplink transmission. In this implementation, the network device can indicate the antenna port using the first field to indicate the second antenna port combination, thereby providing low indication overhead.

[0033] Based on any one of the first to fourth aspects, in one possible implementation, the one or more second antenna port combinations are antenna port combinations including no more than X antenna ports, where X is the number of antenna ports supported by the terminal device for simultaneous transmission. In this implementation, the antenna port combinations included in the one or more second antenna port combinations are defined, so that the network device selects one second antenna port combination therefrom and indicates the selected second antenna port combination to the terminal device.

[0034] Based on any one of the first to fourth aspects, in one possible implementation, the one or more second antenna port combinations are antenna port combinations supported by the terminal device for simultaneous transmission. This facilitates the network device to select antenna ports that can be used for simultaneous transmission for the terminal device, thereby improving uplink transmission efficiency.

[0035] Based on any one of the first to fourth aspects, in one possible implementation, the second information includes a second field, the second field includes N groups of bits, each group of bits in the N groups of bits includes S bits, N is the number of antenna ports of the terminal device, the p-th group of bits in the N groups of bits corresponds to the p-th antenna port of the terminal device, the p-th group of bits is used to indicate the beam used by the p-th antenna port, p is an integer greater than or equal to 1 and less than or equal to N, and S is a positive integer. In this implementation, a possible implementation of the second information is shown. This achieves the indication of the beam used by each antenna port indicated by the first information.

[0036] Based on any one of the first to fourth aspects, in one possible implementation, the second information includes a third field, the third field includes X groups of bits, each group of bits in the X groups of bits includes S bits, X is the number of antenna ports for simultaneous transmission supported by the terminal device, the qth group of bits in the X groups of bits corresponds to the qth antenna port for uplink transmission, and the qth group of bits is used to indicate the beam used by the qth antenna port for uplink transmission among one or more antenna ports for uplink transmission indicated by the network device to the terminal device, q is an integer greater than or equal to 1 and less than or equal to X, and S is a positive integer. In this implementation, another possible implementation of the second information is shown. The third field includes X groups of bits, where X is the number of antenna ports for simultaneous transmission supported by the terminal device. Therefore, the indication overhead of the third field is relatively low. This implements the indication of the beam used by each antenna port indicated in the first information.

[0037] Based on any one of the first to fourth aspects, in a possible implementation manner, the one or more antenna ports used for uplink transmission are indicated by first information.

[0038] Based on any one of the first to fourth aspects, in one possible implementation, the third information indicates a codebook for uplink transmission, including: the third information indicates one or more codebooks selected from a first codebook set; the first codebook set is determined based on the number of antenna ports indicated by the first information and a first parameter, the first parameter including one or more of the following: the configured state of the transform precoder, the maximum rank number used for uplink transmission, whether the terminal device is configured in uplink full-power transmission mode, or the configured uplink full-power transmission mode of the terminal device; the configured state of the transform precoder is on or off. In this implementation, the codebook indicated by the third information and the method for determining the first codebook set to which the codebook belongs are shown, which facilitates the implementation of the solution.

[0039] Based on any one of the first to fourth aspects, in a possible implementation, N R Each reference signal resource includes N P Reference signal ports, terminal equipment includes N P antenna ports, N P Each antenna port corresponds to N R beams, N P is an integer greater than or equal to 1; the first corresponding relationship includes: N R Reference signal resources and N P Each antenna port corresponds to N R The beams correspond one to one, N R Each reference signal resource includes N P Reference signal ports and N P There is a one-to-one correspondence between each antenna port. This implementation illustrates a possible implementation of the first correspondence. Reference signal resources correspond one-to-one to the beam corresponding to each antenna port, and the reference signal ports included in each reference signal resource correspond one-to-one to the antenna port. This facilitates the terminal device to transmit the reference signal for the reference signal port of the corresponding reference signal resource in the beam of the appropriate antenna port. This facilitates network equipment to measure the reference signal and obtain the channel quality of each beam for each antenna port.

[0040] Based on any one of the first to fourth aspects, in a possible implementation manner, the first corresponding relationship includes: N R The reference signal resource i in the reference signal resources includes the reference signal port j and N P The beam i corresponding to antenna port j among the antenna ports corresponds to N P Beam i corresponding to antenna port j among antenna ports is used to send the reference signal on reference signal port j included in reference signal resource i, where i is greater than or equal to 1 and less than or equal to N RAn integer, j is greater than or equal to 1 and less than or equal to N P In this implementation, the correspondence between the antenna port beam and the reference signal port of the reference signal resource is more specifically shown. This facilitates the terminal device to send a reference signal to the network device. This facilitates the network device to measure the reference signal to obtain the channel quality of each beam of each antenna port.

[0041] Based on any one of the first to fourth aspects, in a possible implementation, N R Each reference signal resource includes N P Reference signal ports, terminal equipment includes N R antenna ports, N R Each antenna port corresponds to N P beams, N P is an integer greater than or equal to 1; the second corresponding relationship includes: N R Reference signal resources and N R There is a one-to-one correspondence between the antenna ports, N R Each reference signal resource includes N P Reference signal ports and N R Each antenna port corresponds to N P There is a one-to-one correspondence between the reference signal resources and antenna ports. This implementation illustrates a possible implementation of the first correspondence. Reference signal resources correspond one-to-one to antenna ports, and the reference signal ports included in each reference signal resource correspond one-to-one to the beams corresponding to each antenna port. This facilitates the terminal device to transmit the reference signal of the reference signal port of the corresponding reference signal resource in the beam of the appropriate antenna port. This facilitates the network device to measure the reference signal and obtain the channel quality of each beam of each antenna port.

[0042] Based on any one of the first to fourth aspects, in a possible implementation manner, the second corresponding relationship includes: N R The reference signal resource a in the reference signal resources includes the reference signal port b and N P The antenna port a in the reference signal port corresponds to the beam b, N P Beam b corresponding to antenna port a among the reference signal ports is used to send the reference signal on reference signal port b included in reference signal resource a, where a is greater than or equal to 1 and less than or equal to N R An integer greater than or equal to 1 and less than or equal to N PIn this implementation, the correspondence between the antenna port beam and the reference signal port of the reference signal resource is more specifically shown. This facilitates the terminal device to send a reference signal to the network device. This facilitates the network device to measure the reference signal to obtain the channel quality of each beam of each antenna port.

[0043] Based on any one of the first to fourth aspects, in a possible implementation manner, the first configuration information further includes N R The type parameter of the reference signal resource is used to indicate that the N R Reference signals corresponding to reference signal resources; or, the type parameter is used to indicate that N reference signals are sent using the second corresponding relationship. R In this implementation, the type parameter is used to instruct the terminal device to use the first corresponding relationship to send N reference signals corresponding to the reference signal resources. R Reference signals corresponding to reference signal resources; or, using a type parameter to instruct the terminal device to use a second corresponding relationship to send N R The reference signal corresponding to the reference signal resource is transmitted, thereby enabling the terminal device to send the reference signal in the manner indicated by the type parameter.

[0044] Based on any one of the first to fourth aspects, in a possible implementation manner, the first configuration information further includes first indication information, and the first indication information is used to indicate that the first corresponding relationship is used to send N R A reference signal corresponding to a reference signal resource; or

[0045] The first indication information is used to indicate that the second corresponding relationship is used to send N R A reference signal corresponding to a reference signal resource; or

[0046] The first indication information is used to indicate that one of the first corresponding relationship and the second corresponding relationship is selected to send N R In this implementation, the first indication information instructs the terminal device to send the reference signal using the corresponding correspondence relationship, thereby instructing the terminal device on the method of sending the reference signal.

[0047] It should be noted that the method provided in this application is also applicable to scenarios where a network device performs downlink transmission to a terminal device. For example, the network device sends a reference signal to the terminal device. Correspondingly, the terminal device receives the reference signal from the network device.

[0048] In the downlink transmission scenario, in any one of the first and second aspects, the terminal device transmits data according to N R Reference signal resources and the first corresponding relationship send a reference signal to the network device, or the terminal device sends a reference signal according to NR Reference signal resources and the second corresponding relationship send a reference signal to the network device, and the replacement description is: the terminal device receives the reference signal from the network device, where N R is an integer greater than or equal to 1; the reference signal is a signal generated by the network device according to N R Reference signal resources and the first corresponding relationship are sent, or the reference signal is sent by the network device according to N R A reference signal resource is sent according to a second corresponding relationship.

[0049] In the downlink transmission scenario, in any one of the first to fourth aspects above, the first corresponding relationship is replaced by: the first corresponding relationship includes N R The corresponding relationship between the reference signal resources and the beams corresponding to each antenna port of the network device, and the corresponding relationship between one or more reference signal ports included in each reference signal resource and one or more antenna ports of the network device; the second corresponding relationship includes N R The corresponding relationship between each reference signal resource and one or more antenna ports of the network device, and the corresponding relationship between one or more reference signal ports included in each reference signal resource and the beam corresponding to each antenna port of the network device.

[0050] In the downlink transmission scenario, in any one of the first to fourth aspects above, the first configuration information is replaced as follows: the first configuration information is used to configure N R Reference signal resources, the network device includes one or more antenna ports, N R Each reference signal resource in the reference signal resources includes one or more reference signal ports, N R The reference signal resources correspond to the beams corresponding to each antenna port of the network device, and the one or more reference signal ports included in each reference signal resource correspond to the one or more antenna ports of the network device; or, N R The reference signal resources correspond to one or more antenna ports of the network device, and the one or more reference signal ports included in each reference signal resource correspond to the beam corresponding to each antenna port of the network device; N R is an integer greater than or equal to 1.

[0051] In the downlink transmission scenario, in any of the third and fourth aspects above, the network device receives a reference signal from the terminal device, and the replacement description is: the network device receives a reference signal from the terminal device according to N R Reference signal resources and the first corresponding relationship send a reference signal to the terminal device, or the network device sends a reference signal according to N R The reference signal resource and the second corresponding relationship are used to send a reference signal to the terminal device.

[0052] In the downlink transmission scenario, in any of the first and second aspects above, the terminal device receives at least one of the following from the network device: first information, second information, or third information, and the replacement description is: the terminal device sends at least one of the following to the network device: first information, second information, or third information.

[0053] In the downlink transmission scenario, in any of the above-mentioned third and fourth aspects, the network device sends at least one of the following to the terminal device: first information, second information, or third information, and the replacement description is: the network device receives at least one of the following from the terminal device: first information, second information, or third information.

[0054] In the downlink transmission scenario, in any of the first to fourth aspects above, the first information replacement description is: the first information indicates the antenna port used for downlink transmission, the second information indicates the beam adopted by each antenna port used for downlink transmission, and the third information indicates the codebook used for downlink transmission.

[0055] In the downlink transmission scenario, in any of the first to fourth aspects above, the downlink transmission includes at least one of the following: physical downlink shared channel (PDSCH) transmission, physical downlink control channel (PDCCH) transmission, or channel state information reference signal (CSI-RS) transmission.

[0056] In the downlink transmission scenario, in any of the above-mentioned first to fourth aspects, the bits in the first bit map correspond to the antenna ports of the terminal device, and the values ​​of the bits in the first bit map are used to indicate whether the antenna port corresponding to the bit is used for uplink transmission. The replacement description is: the bits in the first bit map correspond to the antenna ports of the network device, and the values ​​of the bits in the first bit map are used to indicate whether the antenna port corresponding to the bit is used for downlink transmission.

[0057] In the downlink transmission scenario, in any of the above-mentioned first to fourth aspects, the first bit map includes N bits, the N bits correspond one-to-one to the N antenna ports of the terminal device, and N is an integer greater than or equal to 1; when the value of one of the N bits is 1, it is used to indicate that the antenna port corresponding to the bit is used for uplink transmission; when the value of one of the N bits is 0, it is used to indicate that the antenna port corresponding to the bit is not used for uplink transmission; or, when the value of one of the N bits is 1, it is used to indicate that the antenna port corresponding to the bit is not used for uplink transmission; when the value of one of the N bits is 0, it is used to indicate that the antenna port corresponding to the bit is used. The antenna port of the network device is used for uplink transmission, and the replacement description is: the first bit map includes N bits, and the N bits correspond one-to-one to the N antenna ports of the network device, and N is an integer greater than or equal to 1; when the value of one of the N bits is 1, it is used to indicate that the antenna port corresponding to the bit is used for downlink transmission; when the value of one of the N bits is 0, it is used to indicate that the antenna port corresponding to the bit is not used for downlink transmission; or, when the value of one of the N bits is 1, it is used to indicate that the antenna port corresponding to the bit is not used for downlink transmission; when the value of one of the N bits is 0, it is used to indicate that the antenna port corresponding to the bit is used for downlink transmission.

[0058] In the downlink transmission scenario, in any of the first to fourth aspects above, the value of the first field is used to indicate one of the one or more second antenna port combinations, and the antenna port included in the one second antenna port combination is used for uplink transmission. The replacement description is: the value of the first field is used to indicate one of the one or more second antenna port combinations, and the antenna port included in the one second antenna port combination is used for downlink transmission.

[0059] In the downlink transmission scenario, in any of the above-mentioned first to fourth aspects, one or more second antenna port combinations are antenna port combinations in which the number of antenna ports included does not exceed X, and X is the number of antenna ports supported by the terminal device for simultaneous transmission. The replacement description is: one or more second antenna port combinations are antenna port combinations in which the number of antenna ports included does not exceed X, and X is the number of antenna ports supported by the network device for simultaneous transmission.

[0060] In the downlink transmission scenario, in any of the above-mentioned first to fourth aspects, one or more second antenna port combinations are antenna port combinations supported by the terminal device for simultaneous transmission, and the replacement description is: one or more second antenna port combinations are antenna port combinations supported by the network device for simultaneous transmission.

[0061] In the downlink transmission scenario, in any of the above-mentioned first to fourth aspects, the p-th group of bits in the N groups of bits corresponds to the p-th antenna port of the terminal device, and the replacement description is: the p-th group of bits in the N groups of bits corresponds to the p-th antenna port of the network device.

[0062] In the downlink transmission scenario, in any of the first to fourth aspects above, the qth group of bits in the X groups of bits corresponds to the qth antenna port for uplink transmission, and the qth group of bits is used to indicate the beam used by the qth antenna port for uplink transmission of one or more antenna ports for uplink transmission indicated by the network device to the terminal device. The replacement description is: the qth group of bits in the X groups of bits corresponds to the qth antenna port for downlink transmission, and the qth group of bits is used to indicate the beam used by the qth antenna port for downlink transmission of one or more antenna ports for downlink transmission indicated by the terminal device to the network device. The one or more antenna ports for uplink transmission are replaced by the one or more antenna ports for downlink transmission.

[0063] In summary, in the downlink transmission scenario, in any of the first to fourth aspects above, the uplink transmission is replaced by downlink transmission, and the antenna port for uplink transmission is replaced by the antenna port for downlink transmission. The one or more antenna ports of the terminal device are replaced by the one or more antenna ports of the network device. The terminal device is based on N R Reference signal resources and the first corresponding relationship send a reference signal to the network device, or the terminal device sends a reference signal according to N R The reference signal resource and the second corresponding relationship are used to send the reference signal to the network device. The replacement description is: the terminal device receives the reference signal from the network device. The network device receives the reference signal from the terminal device. The replacement description is: the network device receives the reference signal from the terminal device according to N R Reference signal resources and the first corresponding relationship send a reference signal to the terminal device, or the network device sends a reference signal according to N R The reference signal resource and the second corresponding relationship are used to send a reference signal to the terminal device.

[0064] The fifth aspect of the present application provides a first communication device, which may be a device or apparatus with a chip, or a device or apparatus with an integrated circuit, or a chip, chip system, module or control unit in the aforementioned device or apparatus, and this application does not limit this. It should be noted that in this application, when referring to the first communication device, it may refer to the first communication device itself, or it may refer to a chip, functional module or integrated circuit in the first communication device that completes the method provided in this application, and this application does not limit this. In the fifth aspect and its possible implementation methods, the first communication device is used as an example for description. Including:

[0065] Transceiver module, used according to N R Reference signal resources and the first corresponding relationship are used to send a reference signal to the second communication device, or according to N R Reference signal resources and the second corresponding relationship send a reference signal to the second communication device; wherein N R is an integer greater than or equal to 1; the first communication device includes one or more antenna ports, and the first corresponding relationship includes N R The corresponding relationship between the reference signal resources and the beams corresponding to each antenna port of the first communication device, and the corresponding relationship between one or more reference signal ports included in each reference signal resource and one or more antenna ports; the second corresponding relationship includes N R The corresponding relationship between each reference signal resource and one or more antenna ports, and the corresponding relationship between the one or more reference signal ports included in each reference signal resource and the beam corresponding to each antenna port of the first communication device.

[0066] Based on the fifth aspect, in a possible implementation, the transceiver module is further used to: receive first configuration information from the second communication device, the first configuration information is used to configure N R Reference signal resources, N R Each of the reference signal resources includes one or more reference signal ports.

[0067] In the sixth aspect of the present application, a first communication device is provided, which may be a device or apparatus with a chip, or a device or apparatus with an integrated circuit, or a chip, chip system, module or control unit in the aforementioned device or apparatus, and this application does not limit this. It should be noted that in this application, when referring to the first communication device, it may refer to the first communication device itself, or it may refer to a chip, functional module or integrated circuit in the first communication device that completes the method provided in this application, and this application does not limit this. In the sixth aspect and its possible implementation methods, the first communication device is used as an example for description. Including:

[0068] The transceiver module is configured to receive first configuration information from the second communication device; wherein the first configuration information is used to configure N R Reference signal resources, the first communication device includes one or more antenna ports, N R Each reference signal resource in the reference signal resources includes one or more reference signal ports, N R The reference signal resources correspond to the beams corresponding to each antenna port of the first communication device, and the one or more reference signal ports included in each reference signal resource correspond to the one or more antenna ports of the first communication device; or, N RThe reference signal resources correspond to one or more antenna ports of the first communication device, and the one or more reference signal ports included in each reference signal resource correspond to the beam corresponding to each antenna port of the first communication device; N R is an integer greater than or equal to 1.

[0069] Based on the sixth aspect, in a possible implementation, the transceiver module is further configured to: R Reference signal resources and the first corresponding relationship are used to send a reference signal to the second communication device, or according to N R Reference signal resources and a second corresponding relationship send a reference signal to the second communication device; wherein the first corresponding relationship includes N R The corresponding relationship between the reference signal resources and the beams corresponding to each antenna port of the first communication device, and the corresponding relationship between one or more reference signal ports included in each reference signal resource and one or more antenna ports; the second corresponding relationship includes N R The corresponding relationship between each reference signal resource and one or more antenna ports, and the corresponding relationship between the one or more reference signal ports included in each reference signal resource and the beam corresponding to each antenna port of the first communication device.

[0070] Based on the fifth aspect or the sixth aspect, in a possible implementation method, the transceiver module is also used to: receive at least one of the following from the second communication device: first information, second information, or third information; wherein the first information indicates the antenna port used for uplink transmission, the second information indicates the beam adopted by each antenna port used for uplink transmission, and the third information indicates the codebook used for uplink transmission.

[0071] Based on the fifth aspect or the sixth aspect, in a possible implementation manner, uplink transmission includes at least one of the following: PUSCH transmission, PUCCH transmission, or SRS transmission.

[0072] Based on the fifth aspect or the sixth aspect, in a possible implementation method, the transceiver module is also used to: send capability information to the second communication device, the capability information includes at least one of the following: the number of antenna ports of the first communication device, the number of beams corresponding to each antenna port of the first communication device, the number of antenna ports supported by the first communication device for simultaneous transmission, one or more first antenna port combinations supported by the first communication device, or the corresponding relationship supported by the first communication device; the corresponding relationship supported by the first communication device includes one or more of the first corresponding relationship and the second corresponding relationship.

[0073] The seventh aspect of the present application provides a second communication device, which may be a device or apparatus with a chip, or a device or apparatus integrated with a circuit, or a chip, chip system, module or control unit in the aforementioned device or apparatus, and this application does not limit it. It should be noted that in this application, when referring to the second communication device, it may refer to the second communication device itself, or it may refer to a chip, functional module, or integrated circuit in the second communication device that completes the method provided in this application, and this application does not limit it. In the seventh aspect and its possible implementation methods, the second communication device is used as an example for description. Including:

[0074] The transceiver module is configured to receive a reference signal from a first communication device; wherein the reference signal is a signal generated by the first communication device according to N R Reference signal resources and the first corresponding relationship are sent, or the first communication device sends the reference signal resources according to N R Reference signal resources and the second corresponding relationship are sent; N R Each reference signal resource in the reference signal resources includes one or more reference signal ports, N R is an integer greater than or equal to 1; the first communication device includes one or more antenna ports; the first corresponding relationship includes N R The corresponding relationship between the reference signal resources and the beams corresponding to each antenna port of the first communication device, and the corresponding relationship between one or more reference signal ports included in each reference signal resource and one or more antenna ports; the second corresponding relationship includes N R The corresponding relationship between each reference signal resource and one or more antenna ports, and the corresponding relationship between the one or more reference signal ports included in each reference signal resource and the beam corresponding to each antenna port of the first communication device.

[0075] Based on the seventh aspect, in a possible implementation, the transceiver module is further used to: send first configuration information to the first communication device, and the first configuration information is used to configure N R Reference signal resources.

[0076] In an eighth aspect of the present application, a second communication device is provided, which may be a device or apparatus with a chip, or a device or apparatus integrated with a circuit, or a chip, chip system, module or control unit in the aforementioned device or apparatus, and this application does not limit this. It should be noted that in this application, when referring to the second communication device, it may refer to the second communication device itself, or it may refer to a chip, functional module, or integrated circuit in the second communication device that completes the method provided in this application, and this application does not limit this. In the eighth aspect and its possible implementation methods, the second communication device is used as an example for description. Including:

[0077] The transceiver module is used to send the first configuration information to the first communication device; wherein the first configuration information is used to configure N R Reference signal resources, the first communication device includes one or more antenna ports, N R Each reference signal resource in the reference signal resources includes one or more reference signal ports, N R The reference signal resources correspond to the beams corresponding to each antenna port of the first communication device, and the one or more reference signal ports included in each reference signal resource correspond to the one or more antenna ports of the first communication device; or, N R The reference signal resources correspond to one or more antenna ports of the first communication device, and the one or more reference signal ports included in each reference signal resource correspond to the beam corresponding to each antenna port of the first communication device; N R is an integer greater than or equal to 1.

[0078] Based on the eighth aspect, in a possible implementation, the transceiver module is further used to: receive a reference signal from the first communication device; wherein the reference signal is a signal received by the first communication device according to N R Reference signal resources and the first corresponding relationship are sent, or the first communication device sends the reference signal resources according to N R Reference signal resources and the second corresponding relationship are sent; the first corresponding relationship includes N R The corresponding relationship between the reference signal resources and the beams corresponding to each antenna port of the first communication device, and the corresponding relationship between one or more reference signal ports included in each reference signal resource and one or more antenna ports; the second corresponding relationship includes N R The corresponding relationship between each reference signal resource and one or more antenna ports, and the corresponding relationship between the one or more reference signal ports included in each reference signal resource and the beam corresponding to each antenna port of the first communication device.

[0079] Based on the seventh aspect or the eighth aspect, in a possible implementation method, the transceiver module is also used to: send at least one of the following items to the first communication device: first information, second information, or third information; wherein the first information indicates the antenna port used for uplink transmission, the second information indicates the beam adopted by each antenna port used for uplink transmission, and the third information indicates the codebook used for uplink transmission.

[0080] Based on the seventh aspect or the eighth aspect, in a possible implementation manner, uplink transmission includes at least one of the following: PUSCH transmission, PUCCH transmission, or SRS transmission.

[0081] Based on the seventh aspect or the eighth aspect, in a possible implementation method, the transceiver module is also used to: receive capability information from the first communication device, the capability information includes at least one of the following: the number of antenna ports of the first communication device, the number of beams corresponding to each antenna port of the first communication device, the number of antenna ports supported by the first communication device for simultaneous transmission, one or more first antenna port combinations supported by the first communication device, or the corresponding relationship supported by the first communication device; the corresponding relationship supported by the first communication device includes one or more of the first corresponding relationship and the second corresponding relationship.

[0082] Based on any one of aspects 5 to 8, in a possible implementation, in one or more first antenna port combinations, multiple antenna ports in the same first antenna port combination are not used for simultaneous transmission, and / or, multiple antenna ports in different first antenna port groups can be used for simultaneous transmission; or, in one or more first antenna port combinations, multiple antenna ports in the same first antenna port combination can be used for simultaneous transmission, and / or, multiple antenna ports in different first antenna port combinations are not used for simultaneous transmission.

[0083] Based on any one of aspects 5 to 8, in a possible implementation method, the first information includes a first bit map, the bits in the first bit map correspond to the antenna ports of the first communication device, and the values ​​of the bits in the first bit map are used to indicate whether the antenna port corresponding to the bit is used for uplink transmission.

[0084] Based on any one of the fifth to eighth aspects, in a possible implementation method, the first bit map includes N bits, the N bits correspond one-to-one to the N antenna ports of the first communication device, and N is an integer greater than or equal to 1; when the value of one of the N bits is 1, it is used to indicate that the antenna port corresponding to the bit is used for uplink transmission; when the value of one of the N bits is 0, it is used to indicate that the antenna port corresponding to the bit is not used for uplink transmission; or, when the value of one of the N bits is 1, it is used to indicate that the antenna port corresponding to the bit is not used for uplink transmission; when the value of one of the N bits is 0, it is used to indicate that the antenna port corresponding to the bit is used for uplink transmission.

[0085] Based on any one of aspects 5 to 8, in a possible implementation, the first information includes a first field, and the value of the first field is used to indicate a second antenna port combination among one or more second antenna port combinations, and the antenna port included in the second antenna port combination is used for uplink transmission of the first communication device.

[0086] Based on any one of aspects 5 to 8, in one possible implementation, one or more second antenna port combinations are antenna port combinations including no more than X antenna ports, where X is the number of antenna ports supported by the first communication device for simultaneous transmission.

[0087] Based on any one of the fifth aspect to the eighth aspect, in a possible implementation manner, the one or more second antenna port combinations are antenna port combinations supported by the first communication device for simultaneous transmission.

[0088] Based on any one of the fifth to eighth aspects, in a possible implementation method, the second information includes a second field, the second field includes N groups of bits, each group of bits in the N groups of bits includes S bits, N is the number of antenna ports of the first communication device, the p-th group of bits in the N groups of bits corresponds to the p-th antenna port of the first communication device, the p-th group of bits is used to indicate the beam adopted by the p-th antenna port, p is an integer greater than or equal to 1 and less than or equal to N, and S is a positive integer.

[0089] Based on any one of aspects 5 to 8, in a possible implementation, the second information includes a third field, the third field includes X groups of bits, each group of bits in the X groups of bits includes S bits, X is the number of antenna ports for simultaneous transmission supported by the first communication device, the qth group of bits in the X groups of bits corresponds to the qth antenna port for uplink transmission, and the qth group of bits is used to indicate the beam adopted by the qth antenna port for uplink transmission among one or more antenna ports for uplink transmission indicated by the second communication device to the first communication device, q is an integer greater than or equal to 1 and less than or equal to X, and S is a positive integer.

[0090] Based on any one of the fifth aspect to the eighth aspect, in a possible implementation manner, the one or more antenna ports used for uplink transmission are indicated by first information.

[0091] Based on any one of the fifth to eighth aspects, in a possible implementation method, the third information indicates a codebook for uplink transmission, including: the third information indicates one or more codebooks selected from the first codebook set; the first codebook set is determined based on the number of antenna ports indicated by the first information and the first parameter, and the first parameter includes one or more of the following: the state in which the transform precoder is configured, the maximum rank number adopted for uplink transmission, whether the first communication device is configured with an uplink full-power transmission mode, or the uplink full-power transmission mode in which the first communication device is configured; the state in which the transform precoder is configured is on or off.

[0092] Based on any one of the fifth to eighth aspects, in a possible implementation, N R Each reference signal resource includes NP reference signal ports, the first communication device includes N P antenna ports, N P Each antenna port corresponds to N R beams, N P is an integer greater than or equal to 1; the first corresponding relationship includes: N R Reference signal resources and N P Each antenna port corresponds to N R The beams correspond one to one, N R Each reference signal resource includes N P Reference signal ports and N P The antenna ports correspond one to one.

[0093] Based on any one of the fifth to eighth aspects, in a possible implementation manner, the first corresponding relationship includes: N R The reference signal resource i in the reference signal resources includes the reference signal port j and N P The beam i corresponding to antenna port j among the antenna ports corresponds to N P Beam i corresponding to antenna port j among antenna ports is used to send the reference signal on reference signal port j included in reference signal resource i, where i is greater than or equal to 1 and less than or equal to N R An integer, j is greater than or equal to 1 and less than or equal to N P An integer.

[0094] Based on any one of the fifth to eighth aspects, in a possible implementation, N R Each reference signal resource includes N P reference signal ports, the first communication device includes N R antenna ports, N R Each antenna port corresponds to N P beams, N P is an integer greater than or equal to 1; the second corresponding relationship includes: N R Reference signal resources and N R There is a one-to-one correspondence between the antenna ports, N R Each reference signal resource includes N P Reference signal ports and N R Each antenna port corresponds to N P The beams correspond one to one.

[0095] Based on any one of the fifth to eighth aspects, in a possible implementation manner, the second corresponding relationship includes: N RThe reference signal resource a in the reference signal resources includes the reference signal port b and N P The antenna port a in the reference signal port corresponds to the beam b, N P Beam b corresponding to antenna port a among the reference signal ports is used to send the reference signal on reference signal port b included in reference signal resource a, where a is greater than or equal to 1 and less than or equal to N R An integer greater than or equal to 1 and less than or equal to N P An integer.

[0096] Based on any one of the fifth to eighth aspects, in a possible implementation manner, the first configuration information further includes N R The type parameter of the reference signal resource is used to indicate that the N R Reference signals corresponding to reference signal resources; or, the type parameter is used to indicate that N reference signals are sent using the second corresponding relationship. R The reference signal corresponding to the reference signal resource.

[0097] Based on any one of the fifth aspect to the eighth aspect, in a possible implementation manner, the first configuration information further includes first indication information, and the first indication information is used to indicate that the first corresponding relationship is used to send N R A reference signal corresponding to a reference signal resource; or

[0098] The first indication information is used to indicate that the second corresponding relationship is used to send N R A reference signal corresponding to a reference signal resource; or

[0099] The first indication information is used to indicate that one of the first corresponding relationship and the second corresponding relationship is selected to send N R The reference signal corresponding to the reference signal resource.

[0100] In a ninth aspect of the present application, a communication device is provided, comprising: a processor and a memory. The memory stores a computer program or computer instructions, and the processor is configured to call and execute the computer program or computer instructions stored in the memory, so that the processor implements any one of the implementations of any one of the first to eighth aspects.

[0101] Optionally, the communication device further includes a transceiver, and the processor is used to control the transceiver to transmit and receive signals.

[0102] In a tenth aspect, the present application provides a communication device, comprising a processor, wherein the processor is configured to call a computer program or computer instruction stored therein, so that the processor implements any one of the implementations of any one of the first to eighth aspects.

[0103] Optionally, the communication device further includes a transceiver, and the processor is used to control the transceiver to transmit and receive signals.

[0104] In an eleventh aspect of the present application, a communication device is provided, which includes a processor, and the processor is used to execute any one of the implementation methods of any one of the first to eighth aspects.

[0105] A twelfth aspect of the present application provides a computer program product comprising instructions, characterized in that when the computer program product is run on a computer, the computer is enabled to execute any one of the implementation methods of any one of the first to eighth aspects.

[0106] In a thirteenth aspect, the present application provides a computer-readable storage medium comprising computer instructions, which, when executed on a computer, enables the computer to execute any one of the implementation methods in any one of the first to eighth aspects.

[0107] In the fourteenth aspect of the present application, a chip device is provided, comprising a processor for calling a computer program or computer instruction in the memory so that the processor executes any one of the implementation methods of any one of the first to eighth aspects mentioned above.

[0108] Optionally, the processor is coupled to the memory via an interface.

[0109] The fifteenth aspect of the present application provides a communication system, which includes a terminal device and a network device; the terminal device is used to execute any one of the implementation methods shown in the first aspect, and the network device is used to execute any one of the implementation methods shown in the third aspect; or, the terminal device is used to execute any one of the implementation methods shown in the second aspect, and the network device is used to execute any one of the implementation methods shown in the fourth aspect.

[0110] Through the above technical solution, it can be known that the terminal device receives the first configuration information from the network device. The first configuration information is used to configure the N R Reference signal resources, N R Each reference signal resource includes one or more reference signal ports, and the terminal device includes one or more antenna ports. R is an integer greater than or equal to 1. Then, the terminal device calculates the value of N R Reference signal resources and the first corresponding relationship send a reference signal to the network device, or the terminal device sends a reference signal according to N R Reference signal resources and the second corresponding relationship send reference signals to the network device. The first corresponding relationship includes N RThe corresponding relationship between the reference signal resources and the beams corresponding to each antenna port of the terminal device, and the corresponding relationship between one or more reference signal ports included in each reference signal resource and one or more antenna ports. The second corresponding relationship includes N R The correspondence between the reference signal resources and one or more antenna ports, and the correspondence between the one or more reference signal ports included in each reference signal resource and the beam corresponding to each antenna port of the terminal device. The terminal device passes N R The reference signal resource and the first correspondence are used to send a reference signal, so that the network device can determine the channel quality of each beam corresponding to each antenna port by measuring the reference signal, and select the beam and codebook for uplink transmission based on the channel quality of each beam corresponding to each antenna port. In other words, the network device can determine the beam and codebook for uplink transmission in a single measurement process. There is no need to use multiple independent processes to determine the beam and codebook for uplink transmission. This reduces the complexity and latency of the process, thereby improving uplink transmission efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0111] FIG1 is a schematic diagram of a communication system according to an embodiment of the present application;

[0112] FIG2 is another schematic diagram of a communication system according to an embodiment of the present application;

[0113] FIG3 is a schematic diagram of a process for determining a beam and a codebook;

[0114] FIG4 is a schematic diagram of a reference signal sending method and a reference signal receiving method according to an embodiment of the present application;

[0115] FIG5 is a schematic diagram of a scenario of a reference signal sending method according to an embodiment of the present application;

[0116] FIG6 is a schematic diagram of another scenario of the reference signal sending method according to an embodiment of the present application;

[0117] FIG7 is a schematic structural diagram of a communication device according to an embodiment of the present application;

[0118] FIG8 is another schematic structural diagram of a communication device according to an embodiment of the present application;

[0119] FIG9 is another structural diagram of the communication device according to an embodiment of the present application;

[0120] FIG10 is a schematic structural diagram of a terminal device according to an embodiment of the present application;

[0121] FIG11 is a schematic structural diagram of a base station according to an embodiment of the present application. DETAILED DESCRIPTION

[0122] The embodiment of the present application provides a reference signal sending method, a reference signal receiving method and related devices, which are used by a terminal device to transmit a reference signal according to N R Reference signal resources and the first corresponding relationship send a reference signal to the network device, or the terminal device sends a reference signal according to N R The reference signal resources and the second correspondence are used to send a reference signal to the network device. This facilitates the network device to determine the channel quality of each beam corresponding to each antenna port by measuring the reference signal, and facilitates the network device to select the beam and codebook for uplink transmission based on the channel quality of each beam corresponding to each antenna port. In other words, the network device can determine the beam and codebook for uplink transmission in a single measurement process.

[0123] The technical solution in this application will be described below with reference to the accompanying drawings.

[0124] The technical solutions of the present application can be applied to various communication systems. For example, 5G systems, new radio (NR) systems, long term evolution (LTE) systems, LTE frequency division duplex (FDD) systems, LTE time division duplex (TDD) systems, universal mobile telecommunication systems (UMTS), future communication networks after 5G networks, and vehicle-to-everything (V2X) communication systems.

[0125] The communication system to which this application is applicable includes network equipment and terminal equipment, and the network equipment and the terminal equipment can communicate using beams.

[0126] The terminal device and network device of this application are introduced below.

[0127] The terminal device may be a wireless terminal device capable of receiving network device scheduling information and instruction information. The terminal device may be a device that provides voice and / or data connectivity to a user, a handheld device with wireless connection function, or other processing device connected to a wireless modem.

[0128] Terminal equipment, also known as user equipment (UE), mobile station (MS), mobile terminal (MT), or customer premise equipment (CPE), is a device that includes wireless communication capabilities (providing voice / data connectivity to users). For example, it can be a handheld device or vehicle-mounted device with wireless connectivity. Currently, some examples of terminal equipment include mobile phones, tablets, laptops, PDAs, mobile internet devices (MIDs), wearable devices, virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, wireless terminals in the Internet of Vehicles (IoV), wireless terminals in self-driving cars, wireless terminals in remote medical surgery, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, and wireless terminals in smart homes. For example, wireless terminals in unmanned driving can be drones, helicopters, or airplanes. For example, wireless terminals in the Internet of Vehicles can be onboard equipment, complete vehicle equipment, onboard modules, vehicles, or ships. Wireless terminals in industrial control can be cameras, robots, or robotic arms. Wireless terminals in smart homes can be televisions, air conditioners, vacuum cleaners, speakers, or set-top boxes.

[0129] It should be noted that the terminal device can be a device or apparatus with a chip, or a device or apparatus with an integrated circuit, or a chip, chip system, module or control unit in the device or apparatus shown above, and this application does not limit it specifically. It should be noted that in this application, when referring to a terminal device, it can refer to the terminal device itself, or it can refer to a chip, functional module or integrated circuit in the terminal device that performs the method provided in this application, and this application does not limit it specifically.

[0130] A network device may be a device in a wireless network. For example, a network device may be a device deployed in a radio access network that provides wireless communication capabilities for terminal devices. For example, a network device may be a radio access network (RAN) node that connects a terminal device to a wireless network. The network device may also be referred to as an access network device, a RAN entity, an access node, a network node, or a communication device.

[0131] Specifically, the network device may be an access network device for a cellular system related to the Third Generation Partnership Project (3GPP). For example, a 4G communication system or a 5G communication system. The network device may also be an access network device in an open access network (O-RAN or ORAN) or a cloud radio access network (CRAN). Alternatively, the network device may be an access network device in a communication system resulting from the fusion of two or more of the above communication systems.

[0132] The network device includes, but is not limited to, an evolved Node B (eNB), 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., a home evolved NodeB, or a home Node B, HNB), a baseband unit (BBU), an access point (AP) in a wireless fidelity (WIFI) system, a macro base station, a micro base station, a wireless relay node, a donor node, a wireless controller in a CRAN scenario, a wireless backhaul node, a transmission point (TP), or a transmission and receiving point (TRP), and may also be a network device in a 5G mobile communication system. For example, a next generation NodeB (gNB), a TRP, or a TP in an NR system; or one or a group of antenna panels (including multiple antenna panels) of a base station in a 5G mobile communication system; or the network device may also be a network node constituting a gNB or a transmission point. For example, a centralized unit (CU), a distributed unit (DU), a centralized unit control plane (CU-CP), a centralized unit user plane (CU-UP), or a radio unit (RU), etc. The CU and DU can be set separately, or they can also be included in the same network element, such as a BBU. The RU can be included in a radio frequency device or a radio frequency unit. For example, in a remote radio unit (RRU), an active antenna unit (AAU), or a remote radio head (RRH). Alternatively, the network device can also be a server, a wearable device, a vehicle, or an on-board device, etc. For example, the access network device in the V2X technology can be a road side unit (RSU).

[0133] It should be noted that in different systems, CU (or CU-CP and CU-UP), DU or RU may have different names, but those skilled in the art can understand their meanings. For example, in the ORAN system, CU may also be called an open centralized unit (O-CU) or an open CU, DU may also be called an open distributed unit (O-DU), CU-CP may also be called an open centralized unit control plane (O-CU-CP), CU-UP may also be called an open centralized unit user plane (O-CU-UP), and RU may also be called an open radio unit (O-RU). This application does not limit this. Any of the CU, CU-CP, CU-UP, DU and RU in this application may be implemented by a software module, a hardware module, or a combination of a software module and a hardware module.

[0134] Optionally, for network elements in the ORAN system, each network element may implement the protocol layer functions shown in Table 1 below.

[0135] Table 1

[0136] It should be noted that, in the ORAN system, the network device in this application may be one or more network elements in Table 1 above.

[0137] The following describes the architecture of the CU and DU of an access network device. The access network device includes at least one CU and at least one DU. Optionally, the access network device also includes at least one RU.

[0138] The following is an introduction using the example of an access network device including a CU and a DU. The CU has some functions of the core network, and the CU may include a CU-CP and a CU-UP. The CU and the DU may be configured according to the protocol layer functions of the wireless network they implement. For example, the CU is configured to implement the functions of the packet data convergence protocol (PDCP) layer and the protocol layers above it (for example, the RRC layer and / or the SDAP layer). The DU is configured to implement the functions of the protocol layers below the PDCP layer (for example, the RLC layer, the MAC layer, and / or the physical (PHY) layer). For another example, the CU is configured to implement the functions of the protocol layers above the PDCP layer (such as the RRC layer and / or the SDAP layer), and the DU is configured to implement the functions of the PDCP layer and the protocol layers below it (for example, the RLC layer, the MAC layer, and / or the PHY layer, etc.).

[0139] When a CU includes a CU-CP and a CU-UP, the CU-CP is used to implement the control plane functions of the CU, and the CU-UP is used to implement the user plane functions of the CU. For example, when the CU is configured to implement the functions of the PDCP layer, RRC layer, and SDAP layer, the CU-CP is used to implement the RRC layer functions and the control plane functions of the PDCP layer, and the CU-UP is used to implement the SDAP layer functions and the user plane functions of the PDCP layer.

[0140] The CU-CP can interact with network elements in the core network that implement control plane functions. The network elements in the core network that implement control plane functions can be access and mobility function network elements, such as the access and mobility management function (AMF) in the 5G system. The access and mobility function network element is responsible for mobility management in the mobile network, such as location update of terminal devices, registration network of terminal devices, and switching of terminal devices.

[0141] The CU-UP can interact with network elements in the core network that implement user plane functions. Network elements in the core network that implement user plane functions, such as the User Plane Function (UPF) in the 5G system, are responsible for forwarding and receiving data in terminal devices.

[0142] The above configuration of CU and DU is only an example, and the functions of CU and DU can also be configured as needed. For example, the CU or DU can be configured to have the functions of more protocol layers, or the CU or DU can be configured to have partial processing functions of the protocol layer. For example, some functions of the RLC layer and the functions of the protocol layers above the RLC layer are set in the CU, and the remaining functions of the RLC layer and the functions of the protocol layers below the RLC layer are set in the DU. For another example, the functions of the CU or DU can be divided according to the service type or other system requirements. For example, according to the delay, the functions whose processing time needs to meet the smaller delay requirement are set in the DU, and the functions that do not need to meet the delay requirement are set in the CU.

[0143] The DU and RU can work together to implement the functions of the PHY layer. A DU can be connected to one or more RUs. The functions of the DU and RU can be configured in various ways according to the design. For example, the DU is configured to implement the baseband function, and the RU is configured to implement the mid-RF function. For another example, the DU is configured to implement the high-layer functions in the PHY layer, and the RU is configured to implement the low-layer functions in the PHY layer or to implement the low-layer functions and the RF functions. The high-layer functions in the physical layer may include a part of the functions of the physical layer, which is closer to the MAC layer, and the low-layer functions in the physical layer may include another part of the functions of the physical layer, which is closer to the mid-RF side.

[0144] Network devices can also be core network devices. For example, functional entities on the control plane of a network device include the access and mobility management function (AMF) or the session management function (SMF). The AMF is responsible for user access management, security authentication, mobility management, and other functions. Functional entities on the data plane include the user plane function (UPF). The UPF is responsible for managing user plane data transmission, traffic statistics, and other functions.

[0145] It should be noted that the network device can be a device or apparatus with a chip, or a device or apparatus with an integrated circuit, or a chip, chip system, module or control unit in the aforementioned device or apparatus, and this application does not limit this. It should be noted that in this application, when referring to a network device, it can refer to the network device itself, or it can refer to a chip, functional module or integrated circuit in the network device that performs the method provided in this application, and this application does not limit this.

[0146] To facilitate understanding of the technical solutions of the embodiments of the present application, two possible communication systems to which the method provided in the embodiments of the present application is applicable are shown below in conjunction with FIG1 and FIG2 .

[0147] Figure 1 is a schematic diagram of a communication system according to an embodiment of the present application. As shown in Figure 1 , the communication system includes at least one network device. For example, network device 111 is shown in Figure 1 . The communication system also includes at least one terminal device. For example, terminal device 121 and terminal device 122 are shown in Figure 1 . Network device 111 can communicate with terminal devices 121 and 122 using beamforming.

[0148] FIG2 is another schematic diagram of a communication system according to an embodiment of the present application. As shown in FIG2 , the communication system may include at least two network devices. For example, network device 211, network device 212, and network device 213 as shown in FIG2 . The communication system also includes at least one terminal device. For example, terminal device 221 as shown in FIG2 . Terminal device 221 may be provided with communication services by multiple network devices. For example, as shown in FIG2 , network device 211 may use beam 1 to transmit with terminal device 221, and network device 212 may use beam 2 to transmit with terminal device 221. Network device 213 may use beam 3 to transmit with terminal device 221. In other words, a terminal device may be provided with communication services by multiple network devices simultaneously.

[0149] The following introduces some technical terms involved in this application.

[0150] Beam: A beam is a communication resource. It can be wide, narrow, or any other type of beam. Beam formation can be achieved through beamforming or other techniques. Beamforming techniques include digital beamforming, analog beamforming, and hybrid digital / analog beamforming. Different beams can be considered different resources.

[0151] In the NR protocol, beam can be called spatial domain filter, spatial filter, spatial domain parameter, spatial parameter, spatial parameter, spatial domain setting, spatial setting, quasi-colocation (QCL) information, QCL assumption, or QCL indication, etc. The beam can be indicated by the transmission configuration indicator state (TCI-state) parameter or by the spatial relation parameter. Therefore, in this application, beam can be replaced by spatial domain filter, spatial filter, spatial domain parameter, spatial parameter, spatial setting, spatial setting, quasi-colocation (QCL) information, QCL assumption, QCL indication, TCI-state) (including uplink TCI-state, downlink TCI-state), or spatial relationship, etc. The above terms are also equivalent to each other. Beam can also be replaced by other terms representing beams, which are not limited in this application.

[0152] The transmitter can send the same or different information via different beams. Alternatively, multiple beams with the same or similar communication characteristics can be considered a single beam. A beam can include one or more antenna ports for transmitting data channels, control channels, and sounding signals.

[0153] A beam used to transmit a signal may be referred to as a transmission beam (Tx beam), a spatial domain transmission filter, a spatial transmission filter, a spatial domain transmission parameter, a spatial transmission parameter, a spatial domain transmission setting, or a spatial transmission setting. An uplink transmit beam may be indicated by any of a spatial relationship, a TCI-state, and a sounding reference signal (SRS) resource (indicating a transmit beam using the SRS). Therefore, an uplink transmit beam may also be replaced by an SRS resource.

[0154] A beam used to receive a signal may be referred to as a reception beam (Rx beam), a spatial domain reception filter, a spatial reception filter, a spatial domain reception parameter, or a spatial reception parameter, a spatial domain reception setting, or a spatial reception setting.

[0155] For example, a transmit beam can refer to the distribution of signal strength in different directions in space after a signal is transmitted by an antenna, while a receive beam can refer to the distribution of signal strength in different directions in space after a wireless signal is received by an antenna. It is understood that the one or more antenna ports that form a beam can also be considered an antenna port set.

[0156] When using low- or medium-frequency bands, the transmitter can send signals omnidirectionally or across a wide angle. When using high-frequency bands, thanks to the shorter carrier wavelength of high-frequency communication systems, antenna arrays consisting of multiple antenna elements can be deployed at both the transmitter and receiver ends. The transmitter transmits signals with specific beamforming weights, forming a spatially directional beam. Simultaneously, the receiver receives the signals using an antenna array with specific beamforming weights. This helps improve the received signal power at the receiver and combats path loss.

[0157] QCL: Quasi-colocation relationship is used to indicate that multiple resources have one or more identical or similar communication characteristics. For multiple resources with a quasi-colocation relationship, the same or similar communication configuration can be adopted. For example, if two antenna ports have a quasi-colocation relationship, the large-scale characteristics of the channel for transmitting a symbol on one port can be inferred from the large-scale characteristics of the channel for transmitting a symbol on the other port. Large-scale characteristics may include: delay spread, average delay, Doppler spread, Doppler shift, average gain, receiving parameters, terminal device receiving beam number, transmit / receive channel correlation, receive arrival angle, receiver antenna spatial correlation, main angle of arrival (AoA), average arrival angle, AoA spread, etc. Specifically, the colocation indication is used to indicate whether at least two groups of antenna ports have a colocation relationship, including: the colocation indication is used to indicate whether the channel state information reference signals sent by at least two groups of antenna ports come from the same transmission point, or the colocation indication is used to indicate whether the channel state information reference signals sent by at least two groups of antenna ports come from the same beam group.

[0158] Resources: In communication protocols, the term "beam" is not used directly to represent a beam. Instead, other methods are used to implicitly describe beam-related operations. For example, in beam measurement, there is a corresponding relationship between beams and resources (for example, a network device uses a beam to transmit the resource corresponding to the beam), and the quality of the resource measured by the terminal device is equivalent to measuring the quality of the beam. Resources can be uplink signal resources or downlink signal resources. Uplink signals include but are not limited to sounding reference signals (SRS) or demodulation reference signals (DMRS). Downlink signals include but are not limited to channel state information reference signals (CSI-RS), cell-specific reference signals (CS-RS), user equipment-specific reference signals (US-RS), demodulation reference signals (DMRS), and synchronization system / physical broadcast channel blocks (SS / PBCH blocks). The SS / PBCH block can be simply referred to as a synchronization signal block (SSB).

[0159] Resources can be configured through radio resource control (RRC) signaling. In terms of the configuration structure, a resource is an information element (IE), which includes relevant parameters of the corresponding uplink signal or relevant parameters of the corresponding downlink signal. For example, the relevant parameters of the uplink signal may include the type of uplink signal, the resource element carrying the uplink signal, the transmission time and period of the uplink signal, and the number of ports used to send the uplink signal. The relevant parameters of the downlink signal may include the type of downlink signal, the resource element carrying the downlink signal, the transmission time and period of the downlink signal, and the number of ports used to send the downlink signal. For example, if the uplink signal is a reference signal, the reference signal resource may include one or more reference signal ports and the transmission time and period of the reference signal. For example, if the reference signal is an SRS, the SRS resource may include one or more SRS ports.

[0160] Each resource has a unique index, which is used to identify the corresponding uplink signal resource or the corresponding downlink signal resource. It is understandable that the resource index can also be called the resource identifier, which is not specifically limited in this application.

[0161] Antenna port: An antenna port can be understood as a digital channel or a digital port. A digital channel or a digital port can be considered an RF channel that can connect to one or more physical antennas. Therefore, an antenna port can correspond to one or more physical antennas. For example, if an antenna port corresponds to four physical antennas, and each physical antenna uses a beam to transmit signals, then the antenna port corresponds to four beams.

[0162] Reference signal port: A reference signal resource may include one or more reference signal ports, each corresponding to a reference signal. Each reference signal port may correspond to an antenna port, and different reference signal ports may correspond to different antenna ports. A terminal device measures the reference signals on multiple reference signal ports to obtain the channel quality of multiple antenna ports or multiple beams corresponding to the multiple reference signal ports.

[0163] TCI: It can also be called TCI state (TCI-state). In uplink and downlink transmission, the correct beam needs to be used between the network device and the terminal device to achieve correct transmission. In downlink transmission, the network device needs to indicate to the terminal device the downlink transmission beam it uses. The terminal device can determine the appropriate receiving beam based on the downlink transmission beam, and the receiving beam is used to receive information from the network device. In uplink transmission, the network device also needs to indicate to the terminal device which uplink transmission beam the terminal device uses to send information to the network device. The network device can determine the uplink transmission beam with better signal quality for the terminal device. Both the uplink transmission beam and the downlink transmission beam can be indicated by the corresponding TCI state. Specifically, the downlink transmission beam can be indicated by the downlink TCI state, and the uplink transmission beam can be indicated by the uplink TCI state.

[0164] In the 3GPP protocol, the network device can indicate the TCI state to the terminal device through the TCI field in the downlink control information (DCI). The size of the TCI field is 3 bits and can be specifically expressed as 8 different field values ​​(codepoints). Each field value of the TCI field can be associated with an index of a TCI state. The index of the TCI state can uniquely identify a TCI state, and the TCI state can be a downlink TCI state or an uplink TCI state. Each field value of the TCI field can also be associated with two TCI state indexes, and the two TCI state indexes can uniquely identify two TCI states, and the two TCI states can include a downlink TCI state and an uplink TCI state.

[0165] The downlink TCI state includes several parameters that allow the terminal device to determine the relevant information of the downlink transmit beam and thus determine the appropriate receive beam to receive information from the network device. The TCI state is configured by the network device for each terminal device. The structure of the downlink TCI state is as follows:

[0166] Each TCI state includes its own index (tci-StateId) and two quasi-colocation information (QCL-info). Each QCL-info includes a reference signal resource, which is used to indicate that the downlink transmission of the TCI state should use the same downlink timing, frequency offset or receiving beam as the reference signal resource. It is specifically determined by the type of the QCL-info. The QCL type can have four values ​​{typeA, typeB, typeC, typeD}. When the QCL type is typeA, typeB and typeC, the downlink transmission should be carried out using the same downlink timing and frequency offset as the reference signal resource. When the QCL type is typeD, the downlink transmission should be carried out using the same receiving beam as the reference signal resource. Of the two QCL-infos mentioned above, one is of typeD and the other is of typeA or typeB or typeC. The terminal device can determine which receiving beam to use to receive the corresponding downlink transmission through the QCL-info of typeD. The specific execution steps are as follows:

[0167] The network device indicates a downlink TCI state to the terminal device through DCI. The terminal device determines the reference signal resource in the QCL information of type D in the downlink TCI state. The terminal device uses the receiving beam of the reference signal resource as the receiving beam used for downlink transmission. It should be noted that the receiving beam of the reference signal resource is obtained by the terminal device in advance through the beam management process. Through the beam management process, the terminal device can determine which receiving beam is best to receive the reference signal resource, and use the receiving beam as the receiving beam of the reference signal resource.

[0168] The uplink TCI state includes a reference signal resource, which is used to indicate that the uplink transmission using this TCI state should use the same uplink transmit beam as the reference signal resource. The terminal device can determine which transmit beam to use for uplink transmission through this reference signal resource. In the uplink TCI state, the reference signal resource is not included in the QCL-info, and the QCL type is not distinguished, because there is no need to refer to the uplink timing and frequency offset information, only the uplink transmit beam. The structure of the uplink TCI state is shown below:

[0169] The specific steps are as follows:

[0170] The network device indicates a certain uplink TCI state to the terminal device through the DCI. The terminal device determines the reference signal resource in the uplink TCI state. The terminal device uses the transmit beam of the reference signal resource as the transmit beam used by the terminal device for uplink transmission. It should be noted that the transmit beam of the reference signal resource is obtained by the terminal device in advance through the beam management process.

[0171] The following describes the configuration, activation and indication of TCI status.

[0172] TCI-state configuration: The network device configures multiple TCI-states to the terminal device through RRC signaling. These TCI-states all include a QCL-Info of type D. The network device can also configure TCI-states that do not include QCL-Info of type D. However, these TCI-states are not used to indicate data transmission beams and are not further explained here.

[0173] TCI-state activation: After a network device is configured with multiple TCI-states, it must activate eight of them through a media access control element (MAC-CE). These eight TCI-states correspond one-to-one to the eight values ​​of the TCI field in the DCI. That is, the MACCE determines which TCI-states the eight values ​​of the DCI TCI field correspond to.

[0174] TCI state indication: The network device indicates a specific TCI-state through the TCI field in the DCI. For example, the value of the TCI field in the DCI sent by the network device to the terminal device is 000, indicating that the data transmission beam adopts the TCI state corresponding to 000. The reference signal contained in the QCL-Info of type D in this TCI state is the channel state information-reference signal (CSI-RS) with an index of #1, indicating that the beam used for data transmission is the same as the receiving beam corresponding to the CSI-RS with an index of #1. The receiving beam corresponding to the CSI-RS with an index of #1 can be determined through the beam measurement process and is known to the terminal device. Therefore, through the specific value of the TCI field, the terminal device can determine the beam corresponding to the data transmission beam, and thus adopt the corresponding beam to send or receive data.

[0175] It should be noted that the three descriptions of TCI state, TCI-state and TCI state in this article can be used interchangeably.

[0176] In uplink data transmission, in order to improve transmission performance, the terminal device needs to use a beam and codebook with better signal quality for uplink transmission. Specifically, the terminal device can determine a beam with better signal quality through the uplink beam management process. As shown in Figure 3, the network device can configure multiple SRS resources for beam management for the terminal device, and each SRS resource corresponds to a beam of the terminal device. The terminal device uses the beam corresponding to each SRS resource for beam management to send SRS. The network device measures the SRS on each SRS resource for beam management to obtain the quality of the beam corresponding to each SRS resource for beam management, thereby selecting a beam with better signal quality for uplink transmission. Then, the network device can indicate the beam with better signal quality to the terminal device. The codebook is determined by the codebook determination process. Specifically, the network device can configure an SRS resource for codebook measurement for the terminal device, and instruct the terminal device to use the beam with better signal quality to send the SRS corresponding to the SRS resource. The terminal device uses the beam with better signal quality to transmit the SRS corresponding to the SRS resource. The network device measures the SRS corresponding to the SRS resource to determine the appropriate codebook. The network device then indicates the codebook to the terminal device. The terminal device can use the beam with better signal quality and codebook for uplink transmission with the network device. Therefore, beam determination and codebook determination are two independent processes. These two independent processes are executed sequentially, resulting in large and complex process delays, which in turn leads to low uplink transmission efficiency.

[0177] The present application provides a corresponding technical solution for a terminal device to send a reference signal based on NR reference signal resources and a first corresponding relationship, so that the network device can determine the channel quality of each beam corresponding to each antenna port by measuring the reference signal, and the network device can select the beam and codebook for uplink transmission according to the channel quality of each beam corresponding to each antenna port. That is, the network device can determine the beam and codebook for uplink transmission in a single measurement process. There is no need to use multiple independent processes to achieve the determination of the beam for uplink transmission and the determination of the codebook. This reduces the complexity and delay of the process, thereby improving the uplink transmission efficiency.

[0178] In the present application, optionally, uplink transmission includes at least one of the following: PUCCH transmission, SRS transmission, or PUSCH transmission.

[0179] The technical solution of this application is introduced below in conjunction with specific embodiments.

[0180] FIG4 is a schematic diagram of an embodiment of a reference signal sending method and a reference signal receiving method according to an embodiment of the present application. Referring to FIG4 , the method includes:

[0181] 401. A network device sends first configuration information to a terminal device. The first configuration information is used to configure NR reference signal resources. Correspondingly, the terminal device receives the first configuration information from the network device.

[0182] N R Each reference signal resource in the N reference signal resources includes one or more reference signal ports. R is an integer greater than or equal to 1. For details about reference signal resources and reference signal ports, please refer to the relevant introduction of the aforementioned technical terms.

[0183] Optionally, the terminal device includes one or more antenna ports. Each of the one or more antenna ports corresponds to one or more beams. For information about antenna ports and one or more beams corresponding to each antenna port, please refer to the relevant introduction of the aforementioned technical terms. For example, as shown in Figure 5, the terminal device includes antenna port Tx0, antenna port Tx1, antenna port Tx2, and antenna port Tx3. Antenna port Tx0 corresponds to beam 1 and beam 2, antenna port Tx1 corresponds to beam 3 and beam 4, antenna port Tx2 corresponds to beam 5 and beam 6, and antenna port Tx3 corresponds to beam 7 and beam 8. It should be noted that the example shown in Figure 5 above is based on the example that the number of beams corresponding to each antenna port of the terminal device is equal. In actual applications, the number of beams corresponding to each antenna port may be different, and this application does not limit this.

[0184] In one possible implementation, N R The reference signal resources correspond to the beams corresponding to each antenna port of the terminal device, N R One or more reference signal ports included in each of the reference signal resources correspond to one or more antenna ports of the terminal device.

[0185] Optional, N R Each reference signal resource includes N P Reference signal ports, terminal equipment includes N P antenna ports, N P Each antenna port corresponds to N R beams, N P is an integer greater than or equal to 1. N R Reference signal resources and N P Each antenna port corresponds to N R The beams correspond one to one, N R Each reference signal resource includes N P Reference signal ports and N P The antenna ports correspond one to one.

[0186] In this implementation, it is stipulated that the number of reference signal resources is equal to the number of beams corresponding to each antenna port of the terminal device, and the number of reference signal ports included in each reference signal resource is equal to the number of antenna ports included in the terminal device.

[0187] For example, as shown in Figure 5, N R The reference signal resources include two reference signal resources, specifically SRS#0 and SRS#1. SRS#0 includes four reference signal ports, specifically represented as SRS#0: SRS#1 includes four reference signal ports, specifically denoted as SRS#1: Antenna port Tx0 corresponds to beam 1 and beam 2, antenna port Tx1 corresponds to beam 3 and beam 4, antenna port Tx2 corresponds to beam 5 and beam 6, and antenna port Tx3 corresponds to beam 7 and beam 8. SRS#0 corresponds to beam 1 of antenna port Tx0, beam 3 of antenna port Tx1, beam 5 of antenna port Tx2, and beam 7 of antenna port Tx3. SRS#1 corresponds to beam 2 of antenna port Tx0, beam 4 of antenna port Tx1, beam 6 of antenna port Tx2, and beam 8 of antenna port Tx3. Reference signal port for SRS#0 Corresponding to antenna port Tx0, reference signal port of SRS#0 Corresponding to antenna port Tx1, reference signal port of SRS#0 Corresponding to antenna port Tx2, reference signal port of SRS#0 Corresponding to antenna port Tx3. Reference signal port for SRS#1 Corresponding to antenna port Tx0, reference signal port of SRS#1 Corresponding antenna port Tx1, reference signal port of SRS#1 Corresponding to antenna port Tx2, reference signal port of SRS#1 Corresponding antenna port Tx3.

[0188] In another possible implementation, N R Each reference signal resource corresponds to one or more antenna ports of the terminal device, and the one or more reference signal ports included in each reference signal resource correspond to the beam corresponding to each antenna port of the terminal device.

[0189] Optional, N R Each reference signal resource includes N P Reference signal ports, terminal equipment includes N R antenna ports, N R Each antenna port corresponds to N P beams, N Pis an integer greater than or equal to 1. N R Reference signal resources and N R There is a one-to-one correspondence between the antenna ports, N R Each reference signal resource includes N P Reference signal ports and N R Each antenna port corresponds to N P The beams correspond one to one.

[0190] In this implementation, it is stipulated that the number of reference signal resources is equal to the number of antenna ports included in the terminal device, and the number of reference signal ports included in each reference signal resource is equal to the number of beams corresponding to each antenna port.

[0191] For example, as shown in Figure 6, N R The reference signal resources include four reference signal resources, namely SRS#0, SRS#1, SRS#2 and SRS#3. Each of the four reference signal resources includes two reference signal ports. Specifically, it can be expressed as follows: SRS#0: SRS#1: SRS#2: SRS#3: Antenna port Tx0 corresponds to beams 1 and 2, antenna port Tx1 corresponds to beams 3 and 4, antenna port Tx2 corresponds to beams 5 and 6, and antenna port Tx3 corresponds to beams 7 and 8. SRS#0 corresponds to antenna port Tx0, SRS#1 corresponds to antenna port Tx1, SRS#2 corresponds to antenna port Tx2, and SRS#3 corresponds to antenna port Tx3. Reference signal port for SRS#0 Reference signal port corresponding to beam 1, SRS#0 Corresponding to beam 2. Reference signal port of SRS#1 Corresponding to beam 3, SRS#1 reference signal port Corresponding to beam 4. Reference signal port for SRS#2 Corresponding to beam 5, SRS#2 reference signal port Corresponding to beam 6. Reference signal port for SRS#3 Corresponding to beam 7, SRS#3 reference signal port Corresponding to beam 8.

[0192] It should be noted that N is optional. R Each reference signal resource is located in one or more SRS resource sets. Each SRS resource set may be an SRS resource set or a subset of an SRS resource set.

[0193] Optional, N R The reference signal resources are N R SRS resources, N R Each of the SRS resources includes one or more SRS ports.

[0194] Optionally, the first configuration information is carried in RRC signaling.

[0195] Optionally, in an ORAN system, the above step 401 may be performed by an O-CU-CP network element.

[0196] In a possible implementation, the first configuration information further includes N R The type parameter of the reference signal resource is used to indicate that the terminal device uses the first corresponding relationship to send N R Reference signal corresponding to the reference signal resource; or, the type parameter is used to instruct the terminal device to send N using the second corresponding relationship R The reference signal corresponding to the reference signal resource.

[0197] For details about the first corresponding relationship and the second corresponding relationship, please refer to the relevant introduction of step 402 below, which will not be described in detail here.

[0198] Specifically, currently, the type (usage) parameter has four values, each value indicates a corresponding meaning, as shown in Table 2. In this application, a fifth value of the type parameter is added (for example, referred to as the first value here). The name of the fifth value of the type parameter is not limited in this application. In this implementation, the communication protocol only supports the first correspondence, so when the value of the type parameter is the first value, it indicates that the first correspondence is used to send N R Alternatively, the communication protocol only supports the second corresponding relationship, so when the value of the type parameter is the first value, it indicates that the second corresponding relationship is used to send N R The reference signal corresponding to the reference signal resource.

[0199] Table 2

[0200] In another possible implementation, the first configuration information further includes N R When the type parameter is the second value, the type parameter is used to indicate that N reference signal resources are sent using the first corresponding relationship. R Reference signal corresponding to reference signal resources; when the value of the type parameter is the third value, the type parameter is used to indicate that N is sent using the second corresponding relationship. R The reference signal corresponding to the reference signal resource.

[0201] For details about the first corresponding relationship and the second corresponding relationship, please refer to the relevant introduction of step 402 below, which will not be described in detail here.

[0202] Specifically, currently, the type parameter has four values, each value indicates a corresponding meaning, as shown in Table 2 above. In this application, two values ​​of the type parameter are added (here referred to as the second value and the third value). In this implementation, the communication protocol supports the first correspondence and the second correspondence. When the value of the type parameter is the first value, the type parameter is used to indicate that N is sent using the first correspondence. R When the type parameter takes the third value, the type parameter is used to indicate that N reference signals are sent using the second corresponding relationship. R It should be noted that this application does not limit the names of the two values ​​of the type parameter (ie, the second value and the third value), and this application does not limit them specifically.

[0203] In another possible implementation, the first configuration information further includes first indication information, and the first indication information is used to indicate that the first corresponding relationship is used to send N R Reference signals corresponding to reference signal resources; or, the first indication information is used to indicate that N reference signals are sent using the second corresponding relationship. R The reference signal corresponding to the reference signal resource.

[0204] For details about the first corresponding relationship and the second corresponding relationship, please refer to the relevant introduction of step 402 below, which will not be described in detail here.

[0205] Specifically, the communication protocol only supports the first corresponding relationship. When the value of the first indication information is the first value, the first indication information indicates that the first corresponding relationship is used to send N R Alternatively, the communication protocol only supports the second corresponding relationship, and when the value of the first indication information is the first value, the first indication information indicates that the second corresponding relationship is used to send N R The reference signal corresponding to the reference signal resource.

[0206] In another possible implementation, the first configuration information further includes first indication information; when the value of the first indication information is the second value, the first indication information is used to indicate that the first corresponding relationship is used to send N R When the value of the first indication information is the third value, the first indication information is used to indicate that the second corresponding relationship is used to send N R The reference signal corresponding to the reference signal resource.

[0207] Specifically, the communication protocol supports the first corresponding relationship and the second corresponding relationship. When the value of the first indication information is the second value, the first indication information indicates that the first corresponding relationship is used to send N R When the value of the first indication information is the third value, the first indication information indicates that N reference signals corresponding to the reference signal resources are sent using the second corresponding relationship. R The reference signal corresponding to the reference signal resource.

[0208] In another possible implementation, the first configuration information further includes first indication information, and the first indication information is used to indicate that one of the first and second corresponding relationships is selected to send N R The reference signal corresponding to the reference signal resource.

[0209] In this implementation, the communication protocol supports the first correspondence and the second correspondence. The network device can instruct the terminal device to select one of the correspondences and send N R The reference signal corresponding to the reference signal resource.

[0210] Optional, N R A reference signal resource satisfies one or more of the following:

[0211] 1. The number of reference signal ports configured on the same symbol shall not exceed Z. Z is the maximum number of antenna ports supported by the terminal device for simultaneous transmission. Specifically, the terminal device may report the maximum number Z of antenna ports supported by the terminal device for simultaneous transmission to the network device through capability information.

[0212] 2. For the same reference signal resource, the number of reference signal ports configured on the same symbol shall not exceed Z.

[0213] 3. The reference signal ports corresponding to the antenna ports used for simultaneous transmission are configured on the same symbol. Optionally, the terminal device may report the antenna ports used for simultaneous transmission supported by the terminal device to the network device through capability information.

[0214] 4. The reference signal ports corresponding to antenna ports that cannot be used for simultaneous transmission should not be configured on the same symbol. That is, the reference signal ports corresponding to antenna ports that cannot be used for simultaneous transmission should be configured on different symbols. Optionally, the terminal device can report the antenna ports that the terminal device cannot use for simultaneous transmission to the network device through capability information.

[0215] 5. Different reference signal resources are sent through different symbols.

[0216] 6. Reference signal ports with the same number in different reference signal resources are sent using different symbols. Or,

[0217] 7. Different reference signal ports of the same reference signal resource are sent through different symbols.

[0218] Optionally, the above step 401 is an optional step. For example, the N R The N reference signal resources may be preconfigured, or the N R The reference signal resources are determined by the terminal device itself and are not specifically limited in this application.

[0219] The above step 401 shows that the technical solution of the present application is applied to the scenario where the terminal device performs uplink transmission to the network device. It should be noted that the technical solution of the present application is also applicable to the scenario where the network device performs downlink transmission to the terminal device.

[0220] In the downlink transmission scenario, the first configuration information in step 401 can be replaced by the following description: The first configuration information is used to configure N R Reference signal resources, the network device includes one or more antenna ports, N R Each reference signal resource in the reference signal resources includes one or more reference signal ports, N R The reference signal resources correspond to the beams corresponding to each antenna port of the network device, and the one or more reference signal ports included in each reference signal resource correspond to the one or more antenna ports of the network device; or, N R The reference signal resources correspond to one or more antenna ports of the network device, and the one or more reference signal ports included in each reference signal resource correspond to the beam corresponding to each antenna port of the network device; N R is an integer greater than or equal to 1. Therefore, it can be seen that the first configuration information is similar to the first configuration information in the aforementioned step 401, and the details can be referred to the aforementioned related introduction.

[0221] In one possible implementation, N R The reference signal resources correspond to the beams corresponding to each antenna port of the network device, N R One or more reference signal ports included in each of the reference signal resources correspond to one or more antenna ports of the terminal device.

[0222] In this implementation, N R Each reference signal resource includes N P Reference signal ports, network equipment includes N P antenna ports, N P Each antenna port corresponds to N R beams, N P is an integer greater than or equal to 1. N RReference signal resources and N P Each antenna port corresponds to N R The beams correspond one to one, N R Each reference signal resource includes N P Reference signal ports and N P The antenna ports correspond one to one.

[0223] In another possible implementation, N R Each reference signal resource corresponds to one or more antenna ports of the network device, and the one or more reference signal ports included in each reference signal resource correspond to a beam corresponding to each antenna port of the network device.

[0224] In this implementation, N R Each reference signal resource includes N P Reference signal ports, network equipment includes N R antenna ports, N R Each antenna port corresponds to N P beams, N P is an integer greater than or equal to 1. N R Reference signal resources and N R There is a one-to-one correspondence between the antenna ports, N R Each reference signal resource includes N P Reference signal ports and N R Each antenna port corresponds to N P The beams correspond one to one.

[0225] In the downlink transmission scenario, optional, N R The reference signal resources are N R CSI-RS resources, N R Each CSI-RS resource includes one or more CSI-RS ports. R Each reference signal resource is located in one or more CSI-RS resource sets, and each CSI-RS resource set may be a CSI-RS resource set or a subset of a CSI-RS resource set.

[0226] Optionally, the embodiment shown in FIG4 further includes step 401a. Step 401a may be performed before step 401.

[0227] 401a: The network device sends capability information to the terminal device. Correspondingly, the terminal device receives the capability information from the network device.

[0228] The capability information includes at least one of the following: the number of antenna ports of the terminal device, the number of beams corresponding to each antenna port of the terminal device, the number of antenna ports supported by the terminal device for simultaneous transmission, one or more first antenna port combinations supported by the terminal device, or a corresponding relationship supported by the terminal device. The corresponding relationship supported by the terminal device includes one or more of the first corresponding relationship and the second corresponding relationship. For the first corresponding relationship and the second corresponding relationship, please refer to the relevant introduction below, which will not be introduced in detail here.

[0229] For example, as shown in Figure 5, the terminal device includes four antenna ports, namely antenna port Tx0 through antenna port Tx3. Each antenna port of the terminal device corresponds to two beams. As shown in Figure 5, antenna port Tx0 corresponds to beams 1 and 2, antenna port Tx1 corresponds to beams 3 and 4, antenna port Tx2 corresponds to beams 5 and 6, and antenna port Tx3 corresponds to beams 7 and 8. The terminal device supports two antenna ports for simultaneous transmission. For example, antenna port Tx0 and antenna port Tx1 can be used for simultaneous transmission. Antenna port Tx2 and antenna port Tx3 can also be used for simultaneous transmission.

[0230] In one possible implementation, among the one or more first antenna port combinations, multiple antenna ports in the same first antenna port combination are not used for simultaneous transmission, and / or multiple antenna ports in different first antenna port combinations are used for simultaneous transmission. That is, multiple antenna ports in the same first antenna port combination cannot be used for simultaneous transmission, and / or multiple antenna ports in different first antenna port combinations can be used for simultaneous transmission.

[0231] For example, as shown in Figure 5, the terminal device includes four antenna ports, namely antenna port Tx0 to antenna port Tx3. The one or more first antenna ports include two first antenna port combinations, wherein the first first antenna port combination includes antenna port Tx0 and antenna port Tx2, and antenna port Tx0 and antenna port Tx2 cannot be used for simultaneous transmission. The second first antenna port combination includes antenna port Tx1 and antenna port Tx3, and antenna port Tx1 and antenna port Tx3 cannot be used for simultaneous transmission. Therefore, it can be seen that the antenna ports in the first first antenna port combination cannot be used for simultaneous transmission, and the antenna ports in the second first antenna port combination cannot be used for simultaneous transmission. Antenna port Tx0 and antenna port Tx1 can be used for simultaneous transmission, and antenna port Tx2 and antenna port Tx3 can be used for simultaneous transmission. Therefore, it can be seen that the antenna ports corresponding to the first first antenna port combination and the second first antenna port combination can be used for simultaneous transmission.

[0232] In another possible implementation, among the one or more first antenna port combinations, multiple antenna ports in the same first antenna port combination are used for simultaneous transmission, and / or multiple antenna ports in different first antenna port combinations are not used for simultaneous transmission. That is, the same first antenna port can be used for simultaneous transmission, and / or multiple antenna ports in different antenna port combinations cannot be used for simultaneous transmission.

[0233] For example, as shown in Figure 5, the terminal device includes four antenna ports, namely antenna port Tx0 to antenna port Tx3. The one or more first antenna port combinations include two first antenna port combinations, wherein the first antenna port combination includes antenna port Tx0 and antenna port Tx1, and the second antenna port combination includes antenna port Tx2 and antenna port Tx3. Antenna port Tx0 and antenna port Tx1 can be used for simultaneous transmission, and antenna port Tx2 and antenna port Tx3 can be used for simultaneous transmission. Therefore, it can be seen that the antenna ports in the first antenna port combination can be used for simultaneous transmission, and the antenna ports in the second antenna port combination can be used for simultaneous transmission. However, the antenna ports corresponding to the first antenna port combination and the second antenna port combination cannot be used for simultaneous transmission. For example, antenna port Tx0 and antenna port Tx2 cannot be used for simultaneous transmission, and antenna port Tx1 and antenna port Tx3 cannot be used for simultaneous transmission.

[0234] Optionally, in an ORAN system, the above step 401a may be performed by an O-CU-CP network element.

[0235] 402. The terminal device receives the N R Reference signal resources and the first corresponding relationship send a reference signal to the network device, or the terminal device sends a reference signal according to N R The reference signal resource and the second corresponding relationship are used to send a reference signal to the network device. Correspondingly, the network device receives the reference signal from the terminal device.

[0236] The following first introduces the terminal equipment according to N R The process of sending a reference signal to a network device based on a reference signal resource and a first correspondence.

[0237] The first correspondence includes: N R The corresponding relationship between the reference signal resources and the beams corresponding to each antenna port of the terminal device, and the corresponding relationship between one or more reference signal ports included in each reference signal resource and one or more antenna ports of the terminal device.

[0238] In this implementation, the reference signal resource corresponds to the beam corresponding to each antenna port, and the reference signal port of each reference signal resource corresponds to the antenna port. It can be seen that the beam corresponding to the antenna port is used to send the reference signal on the reference signal port corresponding to the antenna port of the reference signal resource corresponding to the beam. Specifically, the terminal device determines the reference signal resource and reference signal port corresponding to each beam corresponding to each antenna port according to the first corresponding relationship. Then, the terminal device sends the reference signal on the reference signal port corresponding to the antenna port of the reference signal resource corresponding to the beam through each beam corresponding to each antenna port. Accordingly, the network device measures the reference signal from the terminal device and obtains N R The channel information of each reference signal resource is obtained. That is, the channel information of each beam corresponding to each antenna port is obtained. The network device determines the channel quality of each beam corresponding to each antenna port based on the channel information of each beam corresponding to each antenna port.

[0239] In one possible implementation, N R Each reference signal resource includes N P Reference signal ports, terminal equipment includes N P antenna ports, N P Each antenna port corresponds to N R beams, N P is an integer greater than or equal to 1; the first corresponding relationship includes: N R Reference signal resources and N P Each antenna port corresponds to N R The beams correspond one to one, N R Each reference signal resource includes N P Reference signal ports and N P The antenna ports correspond one to one.

[0240] For example, as shown in Figure 5, N R The reference signal resources include two reference signal resources, specifically SRS#0 and SRS#1. SRS#0 includes four reference signal ports, specifically represented as SRS#0: SRS#1 includes four reference signal ports, specifically denoted as SRS#1: Antenna port Tx0 corresponds to beams 1 and 2, antenna port Tx1 corresponds to beams 3 and 4, antenna port Tx2 corresponds to beams 5 and 6, and antenna port Tx3 corresponds to beams 7 and 8. The following describes the first correspondence relationship in conjunction with Table 3 and Table 4. This first correspondence relationship includes the correspondence relationship shown in Table 3 and the correspondence relationship shown in Table 4.

[0241] Table 3

[0242] Table 4

[0243] Optionally, the first corresponding relationship includes: N R The reference signal resource i in the reference signal resources includes the reference signal port j and N P The beam i corresponding to antenna port j among the antenna ports corresponds to N P Beam i corresponding to antenna port j among antenna ports is used to send the reference signal on reference signal port j included in reference signal resource i, where i is greater than or equal to 1 and less than or equal to N R An integer, j is greater than or equal to 1 and less than or equal to N P An integer.

[0244] In other words, the first corresponding relationship includes: the reference signal on the reference signal port j included in the reference signal resource i is sent through the beam i corresponding to the antenna port j of the terminal device; or, in other words, the first corresponding relationship includes: the reference signal resource i includes N P The reference signals corresponding to the reference signal ports are respectively transmitted through N P The reference signal on reference signal port 1 included in reference signal resource i is sent through beam i corresponding to antenna port 1, the reference signal on reference signal port 2 included in reference signal resource i is sent through beam i corresponding to antenna port 2, and so on. For example, N R The reference signal resources include reference signal resource 1 and reference signal resource 2. Each reference signal resource includes two reference signal ports. The terminal device includes two antenna ports, namely antenna port 1 and antenna port 2, and each antenna port corresponds to two beams. The reference signal on the first reference signal port included in reference signal resource 1 is sent through the first beam corresponding to antenna port 1, and the reference signal on the second reference signal port included in reference signal resource 1 is sent through the first beam corresponding to antenna port 2. The reference signal on the first reference signal port included in reference signal resource 2 is sent through the second beam corresponding to antenna port 1, and the reference signal on the second reference signal port included in reference signal resource 2 is sent through the second beam corresponding to antenna port 2.

[0245] It should be noted that, optionally, reference signal resource i refers to the reference signal resource with index i, or N R The i-th reference signal resource among the reference signal resources. Optionally, the i-th reference signal resource may refer to the i-th reference signal resource configured in the configuration order, or the i-th reference signal resource sorted in the order of index size, for example, N RThe reference signal resources are sorted from large to small according to the index, or sorted from small to large according to the index, which is not limited in this application.

[0246] It should be noted that, optionally, reference signal port j refers to a reference signal port with index j, or a reference signal resource including N P The jth reference signal port among the reference signal ports. Optionally, the jth reference signal port may refer to the jth reference signal port sorted in configuration order, or the jth reference signal port sorted in order of index size, for example, N P The reference signal ports are sorted from large to small according to the index, or sorted from small to large according to the index, which is not limited in this application.

[0247] It should be noted that, optionally, beam i refers to the beam with index i, or the N corresponding to an antenna port. R Optionally, the i-th beam may refer to the i-th beam in the configuration order, or the i-th beam sorted in the order of index size, for example, N R The beams are sorted from large to small according to the index, or sorted from small to large according to the index, which is not limited in this application.

[0248] For example, as shown in Figure 5, N R The reference signal resources include two reference signal resources, specifically SRS#0 and SRS#1. SRS#0 includes four reference signal ports, specifically represented as SRS#0: SRS#1 includes four reference signal ports, specifically denoted as SRS#1: Antenna port Tx0 corresponds to beam 1 and beam 2, antenna port Tx1 corresponds to beam 3 and beam 4, antenna port Tx2 corresponds to beam 5 and beam 6, and antenna port Tx3 corresponds to beam 7 and beam 8.

[0249] SRS#0 corresponds to beam 1 of antenna port Tx0, beam 3 of antenna port Tx1, beam 5 of antenna port Tx2, and beam 7 of antenna port Tx3. Corresponding to antenna port Tx0, reference signal port of SRS#0 Corresponding to antenna port Tx1, reference signal port of SRS#0 Corresponding to antenna port Tx2, reference signal port of SRS#0 Corresponding antenna port Tx3.

[0250] Therefore, it can be seen that the reference signal port of SRS#0 Corresponding to the beam 1 of antenna port Tx0. Reference signal port for SRS#0 Beam 3 of antenna port Tx1. Reference signal port for SRS#0 Beam 5 of antenna port Tx2. Reference signal port for SRS#0 Corresponds to beam 7 of antenna port Tx3. SRS#1 corresponds to beam 2 of antenna port Tx0, beam 4 of antenna port Tx1, beam 6 of antenna port Tx2, and beam 8 of antenna port Tx3. Reference signal port for SRS#1 Corresponding to antenna port Tx0, reference signal port of SRS#1 Corresponding antenna port Tx1, reference signal port of SRS#1 Corresponding to antenna port Tx2, reference signal port of SRS#1 Corresponding to antenna port Tx3. Therefore, it can be seen that the reference signal port of SRS#1 Corresponding to antenna port Tx0 beam 2. SRS#1 reference signal port Beam 4 of antenna port Tx1. Reference signal port for SRS#1 Beam 6 of antenna port Tx2. Reference signal port for SRS#1 Corresponding to beam 8 of antenna port Tx3. It can be seen that the first corresponding relationship can be expressed as shown in Table 5:

[0251] Table 5

[0252] Therefore, the terminal device sends the reference signal port of SRS#0 through beam 1 of antenna port Tx0 The reference signal of SRS#0 is sent through beam 3 of antenna port Tx1. The reference signal of SRS#0 is sent through beam 5 of antenna port Tx2. The reference signal on the antenna port Tx3 is sent through beam 7 of SRS#0. The terminal device sends the reference signal of SRS#1 through beam 2 of antenna port Tx0. The reference signal on the antenna port Tx1 is sent through beam 4 of SRS#1. The reference signal on the antenna port Tx2 is sent through beam 6 of SRS#1. The reference signal on the antenna port Tx3 and the reference signal port for transmitting SRS#1 through beam 8 of antenna port Tx3 The reference signal on .

[0253] The following describes the terminal equipment according to NR The process of sending a reference signal by using a reference signal resource and a second corresponding relationship.

[0254] The second correspondence includes N R The corresponding relationship between each reference signal resource and one or more antenna ports of the terminal device, and the corresponding relationship between one or more reference signal ports included in each reference signal resource and the beam corresponding to each antenna port of the terminal device.

[0255] In this implementation, the reference signal resource corresponds to the antenna port, and the reference signal port included in each reference signal resource corresponds to the beam corresponding to each antenna port. It can be seen that the beam corresponding to the antenna port is used to send the reference signal on the reference signal port corresponding to the beam of the reference signal resource corresponding to the antenna port. Specifically, the terminal device determines the reference signal resource and reference signal port corresponding to each beam corresponding to each antenna port according to the second corresponding relationship. Then, the terminal device sends the reference signal on the reference signal port corresponding to the beam of the reference signal resource corresponding to the antenna port through each beam corresponding to each antenna port. Accordingly, the network device measures the reference signal from the terminal device and obtains N R The channel information of each reference signal resource is obtained. That is, the channel information of each beam corresponding to each antenna port is obtained. The network device determines the channel quality of each beam corresponding to each antenna port based on the channel information of each beam corresponding to each antenna port.

[0256] In one possible implementation, N R Each reference signal resource includes N P Reference signal ports, terminal equipment includes N R antenna ports, N R Each antenna port corresponds to N P beams, N P is an integer greater than or equal to 1; the second corresponding relationship includes: N R Reference signal resources and N R There is a one-to-one correspondence between the antenna ports, N R Each reference signal resource includes N P Reference signal ports and N R Each antenna port corresponds to N P The beams correspond one to one.

[0257] For example, as shown in Figure 6, N RThe reference signal resources include four reference signal resources, namely SRS#0, SRS#1, SRS#2 and SRS#3. Each of the four reference signal resources includes two reference signal ports. Specifically, it can be expressed as follows: SRS#0: SRS#1: SRS#2: SRS#3: Antenna port Tx0 corresponds to beams 1 and 2, antenna port Tx1 corresponds to beams 3 and 4, antenna port Tx2 corresponds to beams 5 and 6, and antenna port Tx3 corresponds to beams 7 and 8. The second correspondence is described below in conjunction with Table 6 and Table 7. That is, the second correspondence includes the correspondence shown in Table 6 and the correspondence shown in Table 7.

[0258] Table 6

[0259] Table 7

[0260] Optionally, the second corresponding relationship includes: N R The reference signal resource a in the reference signal resources includes the reference signal port b and N P The antenna port a in the reference signal port corresponds to the beam b, N P Beam b corresponding to antenna port a among the reference signal ports is used to send the reference signal on reference signal port b included in reference signal resource a, where a is greater than or equal to 1 and less than or equal to N R An integer greater than or equal to 1 and less than or equal to N P An integer.

[0261] In other words, the second corresponding relationship includes that the reference signal on the reference signal port b included in the reference signal resource a is sent through the beam b corresponding to the antenna port a of the terminal device; or, in other words, the second corresponding relationship includes: the reference signal resource a includes N P The reference signals corresponding to the reference signal ports are respectively transmitted through the N P That is, the reference signal on reference signal port 1 included in reference signal resource a is sent through the first beam corresponding to antenna port 1, the reference signal on reference signal port 2 included in reference signal resource a is sent through the second beam corresponding to antenna port 1, and so on. For example, N RThe reference signal resources include reference signal resource 1 and reference signal resource 2. Each reference signal resource includes two reference signal ports. The terminal device includes two antenna ports, namely antenna port 1 and antenna port 2, and each antenna port corresponds to two beams. The reference signal on the first reference signal port included in reference signal resource 1 is sent through the first beam corresponding to antenna port 1, and the reference signal on the second reference signal port included in reference signal resource 1 is sent through the second beam corresponding to antenna port 1. The reference signal on the first reference signal port included in reference signal resource 2 is sent through the first beam corresponding to antenna port 2. The reference signal on the second reference signal port included in reference signal resource 2 is sent through the second beam corresponding to antenna port 2.

[0262] It should be noted that, optionally, the reference signal resource a refers to the reference signal resource with an index of a, or the ath reference signal resource among the NR reference signal resources. Optionally, the ath reference signal resource is the ath reference signal resource configured in the configuration order, or the ath reference signal resource sorted in order of index size, which is not specifically limited in this application.

[0263] It should be noted that, optionally, the reference signal port b refers to the reference signal port with index b, or a reference signal resource including N P Optionally, the bth reference signal port may refer to the bth reference signal port sorted in configuration order, or the bth reference signal port sorted in index size order, which is not specifically limited in this application.

[0264] Optionally, beam b refers to the beam indexed as b, or the N corresponding to an antenna port. P Optionally, the bth beam may refer to the bth beam in the configuration order, or the bth beam sorted in the order of index size, which is not limited in this application.

[0265] Optionally, antenna port a refers to the antenna port indexed as a, or the N antenna port included in the terminal device. R The ath antenna port among the antenna ports.

[0266] For example, as shown in Figure 6, N R The reference signal resources include four reference signal resources, namely SRS#0, SRS#1, SRS#2 and SRS#3. Each of the four reference signal resources includes two reference signal ports. Specifically, it can be expressed as follows: SRS#0: SRS#1: SRS#2: SRS#3: Antenna port Tx0 corresponds to beam 1 and beam 2, antenna port Tx1 corresponds to beam 3 and beam 4, antenna port Tx2 corresponds to beam 5 and beam 6, and antenna port Tx3 corresponds to beam 7 and beam 8.

[0267] SRS#0 corresponds to antenna port Tx0, SRS#1 corresponds to antenna port Tx1, SRS#2 corresponds to antenna port Tx2, and SRS#3 corresponds to antenna port Tx3. Reference signal port corresponding to beam 1, SRS#0 Corresponding to beam 2. Reference signal port of SRS#1 Corresponding to beam 3, SRS#1 reference signal port Corresponding to beam 4. Reference signal port for SRS#2 Corresponding to beam 5, SRS#2 reference signal port Corresponding to beam 6. Reference signal port for SRS#3 Corresponding to beam 7, SRS#3 reference signal port Corresponding to beam 8. Therefore, it can be seen that the reference signal port of SRS#0 Corresponding to the reference signal port of beam 1 of antenna port Tx0, SRS#0 Corresponding to antenna port Tx0 beam 2. SRS#1 reference signal port Corresponding to the beam 3 of antenna port Tx1, the reference signal port of SRS#1 Beam 4 of antenna port Tx1. Reference signal port for SRS#2 Corresponding to the beam 5 of antenna port Tx2, the reference signal port of SRS#2 Beam 6 of antenna port Tx2. Reference signal port for SRS#3 Corresponding to beam 7 of antenna port Tx3, reference signal port of SRS#3 Corresponding to beam 8 of antenna port Tx3. It can be seen that the second corresponding relationship can be expressed as shown in Table 8:

[0268] Table 8

[0269] Therefore, the terminal device sends the reference signal port of SRS#0 through beam 1 of antenna port Tx0 The reference signal on the antenna port Tx0 is sent through beam 2 of SRS#0. The terminal device sends the reference signal of SRS#1 through beam 3 of antenna port Tx1. The reference signal on the antenna port Tx1 is sent through beam 4 of SRS#1. The terminal device sends the reference signal of SRS#2 through beam 5 of antenna port Tx2. The reference signal on the antenna port Tx2 is sent through beam 6 of SRS#2. The terminal device sends the reference signal of SRS#3 through beam 7 of antenna port Tx3. The reference signal on the antenna port Tx3 is sent through beam 8 of SRS#3. The reference signal on .

[0270] Optionally, the first correspondence and the second correspondence may be specified in a communication protocol or pre-configured in the terminal device and the network device, which is not specifically limited in this application. For example, the network device may configure the first correspondence and the second correspondence for the terminal device via RRC signaling.

[0271] Optionally, in an ORAN system, the above step 402 may be performed by an O-RU network element.

[0272] The above step 402 shows that the technical solution of the present application is applied to the scenario where the terminal device performs uplink transmission to the network device. It should be noted that the technical solution of the present application is also applicable to the scenario where the network device performs downlink transmission to the terminal device.

[0273] In the downlink transmission scenario, the above step 402 can be replaced by the following description: the network device receives the N R Reference signal resources and the first corresponding relationship send a reference signal to the terminal device, or the network device sends a reference signal according to N R The reference signal resource and the second corresponding relationship are used to send a reference signal to the terminal device. Correspondingly, the terminal device receives the reference signal from the network device.

[0274] The first correspondence includes N R The correspondence between each reference signal resource and the beam corresponding to each antenna port of the network device, and the correspondence between one or more reference signal ports included in each reference signal resource and one or more antenna ports of the network device. It can be seen that the first correspondence is similar to the first correspondence in the aforementioned step 402, and the details can be referred to the aforementioned related introduction.

[0275] The second correspondence includes N RThe correspondence between each reference signal resource and one or more antenna ports of the network device, and the correspondence between one or more reference signal ports included in each reference signal resource and the beam corresponding to each antenna port of the network device. It can be seen that the second correspondence is similar to the second correspondence in step 402. For details, please refer to the relevant introduction above.

[0276] Optionally, the embodiment shown in FIG4 further includes step 403. Step 403 may be performed after step 402.

[0277] 403. The network device sends at least one of the following to the terminal device: first information, second information, or third information. Correspondingly, the terminal device receives at least one of the following from the network device: first information, second information, or third information.

[0278] Optionally, the first information, the second information, or the third information may be carried via DCI signaling or MAC CE signaling. The first information, the second information, or the third information may be carried in the same signaling. The first information, the second information, or the third information may also be carried in different signaling.

[0279] The first information indicates the antenna port used for uplink transmission. For example, as shown in Figure 5, the terminal device includes four antenna ports, and the network device measures the reference signal from the terminal device to obtain the channel information of each antenna port, and determines the channel quality of each antenna port based on the channel information of each antenna port. The network device can select one or more antenna ports from the four antenna ports, and indicate the selected one or more antenna ports to the terminal device through the first information. For example, the network device can select one or more antenna ports with the best channel quality from the four antenna ports. It can be seen that the network device can indicate the antenna port used for uplink transmission to the terminal device. This enables flexible selection of suitable antenna ports for uplink transmission, which is beneficial to improving uplink transmission performance.

[0280] In one possible implementation, the first information includes a first bit map, the bits in the first bit map correspond to the antenna ports of the terminal device, and the values ​​of the bits in the first bit map are used to indicate whether the terminal device uses the antenna port corresponding to the bit for uplink transmission.

[0281] For example, the first bitmap includes N bits, and the N bits correspond one-to-one to the N antenna ports of the terminal device, where N is an integer greater than or equal to 1, and N is the number of antenna ports included in the terminal device. When the value of one of the N bits is 1, it is used to instruct the terminal device to use the antenna port corresponding to the bit for uplink transmission; when the value of one of the N bits is 0, it is used to instruct the terminal device not to use the antenna port corresponding to the bit for uplink transmission. Alternatively, when the value of one of the N bits is 1, it is used to instruct the terminal device not to use the antenna port corresponding to the bit for uplink transmission; when the value of one of the N bits is 0, it is used to instruct the terminal device to use the antenna port corresponding to the bit for uplink transmission. For example, as shown in Figure 5, the terminal device includes four antenna ports, namely antenna port Tx0 to antenna port Tx3. Therefore, the first bitmap includes four bits, of which the first bit corresponds to antenna port Tx0, the second bit corresponds to antenna port Tx1, the third bit corresponds to antenna port Tx2, and the fourth bit corresponds to antenna port Tx3. For example, the value of the first bitmap is 1100, so it can be seen that the network device instructs the terminal device to use antenna port Tx0 and antenna port Tx1 for uplink transmission.

[0282] In another possible implementation, the first information includes a first field, a value of the first field is used to indicate one of the one or more second antenna port combinations, and the antenna port included in the one second antenna port combination is used for uplink transmission.

[0283] Optionally, each of the one or more second antenna port combinations includes no more than X antenna ports, where X is the number of antenna ports supported by the terminal device for simultaneous transmission.

[0284] In one possible implementation, the one or more second antenna port combinations are antenna port combinations including no more than X antenna ports. For example, as shown in FIG5 , the terminal device includes four antenna ports, and X is 2, so the one or more second antenna port combinations include six second antenna port combinations, including second antenna port combination 1 to second antenna port combination 6, respectively. Second antenna port combination 1 includes antenna port Tx0 and antenna port Tx1. Second antenna port combination 2 includes antenna port Tx0 and antenna port Tx2. Second antenna port 3 includes antenna port Tx0 and antenna port Tx3. Second antenna port combination 4 includes antenna port Tx1 and antenna port Tx2. Second antenna port 5 includes antenna port Tx1 and antenna port Tx3. Second antenna port combination 6 includes antenna port Tx2 and antenna port Tx3. Therefore, the length of the first field can be 3 bits, and different values ​​of the first field indicate different second antenna port combinations. As shown in Table 9:

[0285] Table 9

[0286] For example, if the value of the first field is 000, then the first field indicates the second antenna port combination 1. The network device instructs the terminal device to use the antenna port in the second antenna port combination 1 for uplink transmission.

[0287] In another possible implementation, the one or more second antenna port combinations are antenna port combinations supported by the terminal device for simultaneous transmission. The information of the antenna port combinations supported by the terminal device for simultaneous transmission can be reported by the terminal device to the network device. For example, as shown in Figure 5, the terminal device includes four antenna ports, namely antenna port Tx0 to antenna port Tx3. X is 2. Antenna port Tx0 and antenna port Tx1 can be used for simultaneous transmission. Antenna port Tx2 and antenna port Tx3 can be used for simultaneous transmission. Therefore, the one or more second antenna port combinations include a second antenna port combination 1 and a second antenna port combination 2. The second antenna port combination 1 includes antenna port Tx0 and antenna port Tx1. The second antenna port combination 2 includes antenna port Tx2 and antenna port Tx3. Therefore, it can be seen that the length of the first field can be 1 bit, and different values ​​of the first field indicate different second antenna port combinations. As shown in Table 10:

[0288] Table 10

[0289] For example, if the value of the first field is 1, then the first field indicates the second antenna port combination 2. The network device instructs the terminal device to use the antenna port in the second antenna port combination 2 for uplink transmission.

[0290] The second information indicates the beams used by each antenna port for uplink transmission. For example, as shown in Figure 5, the terminal device includes four antenna ports, each corresponding to two beams. The network device measures the reference signal from the terminal device to obtain channel information for each beam corresponding to each antenna port, and determines the channel quality of each beam corresponding to each antenna port based on the channel information for each beam corresponding to each antenna port. The network device can select the corresponding antenna port and one or more beams corresponding to each antenna port from the beams corresponding to each antenna port. The network device then indicates to the terminal device the beams used by each selected antenna port using the second information. For example, the network device selects antenna port Tx0 and antenna port Tx1 with the best channel quality from the four antenna ports, and selects beam 1 for antenna port Tx0 and beam 3 for antenna port Tx1. Thus, the network device can indicate to the terminal device the beams used by each antenna port for uplink transmission. This allows the terminal device to select an appropriate beam for uplink transmission, which helps improve uplink transmission performance and efficiency.

[0291] In one possible implementation, the second information includes a second field, the second field includes N groups of bits, each group of bits in the N groups of bits includes S bits, N is the number of antenna ports of the terminal device, the p-th group of bits in the N groups of bits corresponds to the p-th antenna port of the terminal device, the p-th group of bits is used to indicate the beam used by the p-th antenna port, p is an integer greater than or equal to 1 and less than or equal to N, and S is a positive integer. It should be noted that when the number of antenna ports indicated by the first information is less than N, the group bits corresponding to the antenna ports not indicated in the first information in the N groups of bits are reserved and do not indicate any information. Optionally, the number of beams corresponding to different antenna ports of the terminal device is equal. Then S is equal to M is the number of beams corresponding to each antenna port. Refers to rounding log2M upwards.

[0292] For example, as shown in Figure 5, the terminal device includes four antenna ports, each of which corresponds to two beams. Therefore, the second field includes four groups of bits, each of which includes one bit. When the value of the bit is 0, it indicates that the first beam corresponding to the antenna port corresponding to the group of bits is used; when the value of the bit is 1, it indicates that the second beam corresponding to the antenna port corresponding to the group of bits is used. Among the four groups of bits, the first group of bits corresponds to antenna port Tx0, the second group of bits corresponds to antenna port Tx1, the third group of bits corresponds to antenna port Tx2, and the fourth group of bits corresponds to antenna port Tx3. The first field indicates that the terminal device uses antenna port Tx0 and antenna port Tx1. The value of the first group of bits is 0, indicating that beam 1 of antenna port Tx0 is used. The value of the second group of bits is 0, indicating that beam 3 of antenna port Tx1 is used. The third and fourth groups of bits are reserved and do not indicate any information.

[0293] It can be seen from this that the terminal device can know based on the first information and the second information that if an antenna port is used for uplink transmission, a group of bits corresponding to the antenna port is used to indicate the beam used by the antenna port, and if an antenna port is not used for uplink transmission, a group of bits corresponding to the antenna port is reserved and no indication is given. For example, as shown in Figure 5, the terminal device includes four antenna ports, so the second field includes four groups of bits. The first information indicates that the terminal device uses the first antenna port and the third antenna port for uplink transmission, and does not use the second antenna port and the fourth antenna port, then the first group of bits and the third group of bits in the above four groups of bits are respectively used to indicate the beams used on the above first antenna port and the third antenna port, respectively. The second group of bits and the fourth group of bits in the above four groups of bits are reserved and do not indicate any information.

[0294] In one possible implementation, the second information includes a second field, the second field includes N groups of bits, each group of bits in the N groups of bits includes S bits, N is the number of antenna ports of the terminal device, the p-th group of bits in the N groups of bits corresponds to the p-th antenna port for uplink transmission among one or more antenna ports for uplink transmission indicated by the network device to the terminal device, the p-th group of bits is used to indicate the beam used by the p-th antenna port for uplink transmission, p is an integer greater than or equal to 1 and less than or equal to N, and S is a positive integer. In other words, the first information indicates that L antenna ports are used for uplink transmission, that is, if there are L antenna ports for uplink transmission, then the first L groups of bits in the above-mentioned N groups of bits are used to indicate the beams used on the L antenna ports respectively, and the remaining NL groups of bits are reserved and do not make any indication. L is an integer greater than or equal to 1 and less than or equal to N.

[0295] Optionally, the number of beams corresponding to different antenna ports of the terminal device is equal. Then S is equal to M is the number of beams corresponding to each antenna port. Refers to rounding log2M upwards.

[0296] In another possible implementation, the second information includes a third field, which includes X groups of bits, each of which includes S bits, where X is the number of antenna ports for simultaneous transmission supported by the terminal device. The qth group of bits in the X groups of bits corresponds to the qth antenna port used for uplink transmission, and the qth group of bits is used to indicate the beam used by the qth antenna port used for uplink transmission among the one or more antenna ports used for uplink transmission indicated by the network device to the terminal device. q is an integer greater than or equal to 1 and less than or equal to X, and S is a positive integer. Optionally, the qth antenna port used for uplink transmission is the qth antenna port among the one or more antenna ports used for uplink transmission indicated by the first information. Optionally, if the first information indicates L antenna ports, the first L groups of bits in the X groups of bits correspond one-to-one to the L antenna ports. A group of bits in the first L groups of bits is used to indicate the beam used by the antenna port corresponding to the group of bits. The last XL groups of bits in the N groups of bits are reserved and do not indicate any information. L is an integer greater than or equal to 1 and less than or equal to N.

[0297] For example, as shown in Figure 5, the first information indicates that the terminal device uses antenna port Tx0 and antenna port Tx1. Each antenna port of the terminal device corresponds to two beams. X is 3, so the third field includes three groups of bits. The first group of bits corresponds to antenna port Tx0, the second group of bits corresponds to antenna port Tx1, and the third group of bits is reserved and does not indicate any information. Each group of bits includes one bit. When the value of the bit is 0, it indicates that the first beam corresponding to the antenna port corresponding to the group of bits is used; when the value of the bit is 1, it indicates that the second beam corresponding to the antenna port corresponding to the group of bits is used. Of the two groups of bits, the value of the first group of bits is 0, indicating that beam 1 of antenna port Tx0 is used. The value of the second group of bits is 1, indicating that beam 4 of antenna port Tx1 is used.

[0298] The third information indicates the codebook used for uplink transmission. It can be seen that the network device obtains the channel quality of each beam of each antenna port by measuring the reference signal of the terminal device. The network device thus selects a suitable codebook for the terminal device in combination with the channel quality of each beam of each antenna port. This enables the selection of a suitable beam and codebook for the terminal device in one measurement process. The network device can determine the beam and codebook for uplink transmission in one measurement process. There is no need to determine the beam and codebook for uplink transmission through multiple independent processes. This reduces the complexity and delay of the process, thereby improving the efficiency of uplink transmission.

[0299] Optionally, the third information indicates one or more codebooks selected from the first codebook set. The first codebook set is determined based on the number of antenna ports indicated by the first information and a first parameter, where the first parameter includes one or more of the following: a configured state of a transform precoder, a maximum rank number adopted for uplink transmission, whether the terminal device is configured in an uplink full-power transmission mode, or an uplink full-power transmission mode configured for the terminal device; and whether the configured state of the transform precoder is enabled (disabled) or disabled (enabled).

[0300] Accordingly, the terminal device determines the number of antenna ports indicated by the network device based on the first information. The terminal device then determines a first codebook set based on the number of antenna ports. Optionally, the terminal device selects the first codebook set based on the number of antenna ports and the first parameter. The terminal device selects the codebook indicated by the third information from the first codebook set.

[0301] Optionally, the uplink transmission includes at least one of the following: PUSCH transmission, PUCCH transmission, or SRS transmission.

[0302] Optionally, the network device sends at least one of the following to the terminal device via MAC CE or DCI: first information, second information, or third information.

[0303] It should be noted that the first information, the second information and the third information can be sent separately or simultaneously, and this application does not impose any specific limitations.

[0304] Optionally, in an ORAN system, the above step 403 may be performed by an O-RU network element.

[0305] The above step 403 shows that the technical solution of the present application is applied to the scenario where the terminal device performs uplink transmission to the network device. It should be noted that the technical solution of the present application is also applicable to the scenario where the network device performs downlink transmission to the terminal device.

[0306] In the downlink transmission scenario, the above step 403 can be alternatively described as: the terminal device sends at least one of the following to the network device: the first information, the second information, or the third information. Correspondingly, the network device receives at least one of the following from the terminal device: the first information, the second information, or the third information.

[0307] The first information indicates the antenna port used for downlink transmission. It can be seen that the first information is similar to the first information in the aforementioned step 403. For details, please refer to the relevant introduction of the aforementioned first information.

[0308] The second information indicates the beams used by each antenna port for downlink transmission. It can be seen that the second information is similar to the second information in the aforementioned step 403. For details, please refer to the relevant introduction of the aforementioned second information.

[0309] The third information indicates the codebook used for downlink transmission. It can be seen that the third information is similar to the third information in the aforementioned step 403. For details, please refer to the relevant introduction of the aforementioned third information.

[0310] In the downlink transmission scenario, the uplink transmission in the above step 403 is replaced by downlink transmission.

[0311] Optionally, the downlink transmission includes at least one of the following: PDSCH transmission, PDCCH transmission, or CSI-RS transmission.

[0312] Optionally, the embodiment shown in FIG4 further includes step 404. Step 404 may be performed after step 403.

[0313] 404. The terminal device performs uplink transmission with the network device through the antenna port indicated by the first information, the beam used by each antenna port indicated by the second information, and / or the codebook indicated by the third information.

[0314] For example, the terminal device sends a PUSCH to the network device through the antenna port indicated by the first information, the beam adopted by each antenna port indicated by the second information, and / or the codebook indicated by the third information.

[0315] Optionally, in an ORAN system, the above step 404 may be performed by an O-RU network element.

[0316] The above step 404 shows that the technical solution of the present application is applied to the scenario where the terminal device performs uplink transmission to the network device. It should be noted that the technical solution of the present application is also applicable to the scenario where the network device performs downlink transmission to the terminal device.

[0317] In the downlink transmission scenario, the above step 404 can be replaced by the description as: the network device performs downlink transmission with the terminal device through the antenna port indicated by the first information, the beam adopted by each antenna port indicated by the second information, and / or the code book indicated by the third information.

[0318] For example, the network device sends the PDSCH to the terminal device through the antenna port indicated by the first information, the beam used by each antenna port indicated by the second information, and / or the codebook indicated by the third information.

[0319] In an embodiment of the present application, the terminal device sends a reference signal to the network device according to the NR reference signal resources and the first correspondence, or the terminal device sends a reference signal to the network device according to the NR reference signal resources and the second correspondence. The first correspondence includes the correspondence between the NR reference signal resources and the beams corresponding to each antenna port of the terminal device, and the correspondence between one or more reference signal ports included in each reference signal resource and one or more antenna ports. The second correspondence includes N R The correspondence between each reference signal resource and one or more antenna ports, and the correspondence between one or more reference signal ports included in each reference signal resource and the beam corresponding to each antenna port of the terminal device. This makes it easier for the network device to determine the channel quality of each beam corresponding to each antenna port by measuring the reference signal, and facilitates the network device to select the beam and codebook for uplink transmission according to the channel quality of each beam corresponding to each antenna port. That is, the network device can determine the beam and codebook for uplink transmission in a single measurement process. There is no need to use multiple independent processes to achieve the determination of the beam and codebook for uplink transmission. This reduces the complexity and delay of the process, thereby improving the uplink transmission efficiency.

[0320] The communication device provided in the embodiments of the present application is described below.

[0321] FIG7 is a schematic diagram of the structure of a communication device according to an embodiment of the present application. Referring to FIG7 , the communication device can be used to execute the process executed by the terminal device in the embodiment shown in FIG4 . For details, please refer to the relevant description of the above method embodiment.

[0322] The communication device 700 includes a transceiver module 701. Optionally, the communication device 700 further includes a processing module 702.

[0323] The processing module 702 is used to process data. The transceiver module 701 can implement corresponding communication functions. The transceiver module 701 can also be called a communication interface or a communication module.

[0324] Optionally, the communication device 700 may further include a storage module, which may be used to store instructions and / or data. The processing module 702 may read the instructions and / or data in the storage module so that the communication device implements the aforementioned method embodiment.

[0325] The communication device module 700 can be used to perform the actions performed by the terminal device in the above method embodiments. The communication device 700 can be a terminal device or a component that can be configured in a terminal device. The processing module 702 is used to perform the processing-related operations on the terminal device side in the above method embodiments. The transceiver module 701 is used to perform the reception-related operations on the terminal device side in the above method embodiments.

[0326] Optionally, the transceiver module 701 may include a sending module and a receiving module. The sending module is used to perform the sending operation in the above method embodiment. The receiving module is used to perform the receiving operation in the above method embodiment.

[0327] It should be noted that the communication device 700 may include a sending module but not a receiving module. Alternatively, the communication device 700 may include a receiving module but not a sending module. The specific implementation depends on whether the above solution executed by the communication device 700 includes a sending action and a receiving action.

[0328] Optionally, the communication device 700 is used to execute the actions performed by the terminal device in the embodiment shown in FIG. 4 above.

[0329] For example, the communication device 700 is used to execute the actions executed by the terminal device in the embodiment shown in FIG4 above. The communication device 700 executes the following scheme:

[0330] The transceiver module 701 is used to R Reference signal resources and the first corresponding relationship send a reference signal to the network device, or, according to N R Reference signal resources and the second corresponding relationship send a reference signal to the network device; wherein N Ris an integer greater than or equal to 1; the communication device 700 includes one or more antenna ports, and the first corresponding relationship includes N R The corresponding relationship between the reference signal resources and the beams corresponding to each antenna port of the communication device 700, and the corresponding relationship between one or more reference signal ports included in each reference signal resource and one or more antenna ports; the second corresponding relationship includes N R The corresponding relationship between each reference signal resource and one or more antenna ports, and the corresponding relationship between the one or more reference signal ports included in each reference signal resource and the beam corresponding to each antenna port of the communication device 700.

[0331] For another example, the communication device 700 executes the following scheme:

[0332] The transceiver module 701 is used to receive the first configuration information from the network device; wherein the first configuration information is used to configure N R Reference signal resources, the communication device 700 includes one or more antenna ports, N R Each reference signal resource in the reference signal resources includes one or more reference signal ports, N R The reference signal resources correspond to the beams corresponding to each antenna port of the communication device 700, and the one or more reference signal ports included in each reference signal resource correspond to the one or more antenna ports of the communication device 700; or, N R The reference signal resources correspond to one or more antenna ports of the communication device 700, and the one or more reference signal ports included in each reference signal resource correspond to the beam corresponding to each antenna port of the communication device 700; N R is an integer greater than or equal to 1.

[0333] It should be understood that the specific process of each module executing the above corresponding process has been described in detail in the above method embodiment, and for the sake of brevity, it will not be repeated here.

[0334] The processing module 702 in the above embodiment can be implemented by at least one processor or processor-related circuits. The transceiver module 701 can be implemented by a transceiver or transceiver-related circuits. The transceiver module 701 can also be called a communication module or communication interface. The storage module can be implemented by at least one memory.

[0335] FIG8 is a schematic diagram of the structure of a communication device according to an embodiment of the present application. Referring to FIG8 , the communication device can be used to execute the process executed by the network device in the embodiment shown in FIG4 . For details, please refer to the relevant description of the above method embodiment.

[0336] The communication device 800 includes a transceiver module 801. Optionally, the communication device 800 further includes a processing module 802.

[0337] The transceiver module 801 can implement corresponding communication functions, and the processing module 802 is used for data processing. The transceiver module 801 can also be called a communication interface or a communication module.

[0338] Optionally, the communication device 800 may further include a storage module, which may be used to store instructions and / or data. The processing module 802 may read the instructions and / or data in the storage module so that the communication device implements the aforementioned method embodiment.

[0339] The communication device module 800 can be used to perform the actions performed by the network device in the above method embodiments. The communication device 800 can be a network device or a component that can be configured in a network device. The transceiver module 801 is used to perform the reception-related operations on the network device side of the above method embodiments, and the processing module 802 is used to perform the processing-related operations on the network device side of the above method embodiments.

[0340] Optionally, the transceiver module 801 may include a sending module and a receiving module. The sending module is used to perform the sending operation in the above method embodiment. The receiving module is used to perform the receiving operation in the above method embodiment.

[0341] It should be noted that the communication device 800 may include a sending module but not a receiving module. Alternatively, the communication device 800 may include a receiving module but not a sending module. The specific implementation depends on whether the above solution executed by the communication device 800 includes a sending action and a receiving action.

[0342] Optionally, the communication device 800 is used to execute the actions performed by the network device in the embodiment shown in FIG. 4 above.

[0343] For example, the communication device 800 is used to perform the actions performed by the network device in the embodiment shown in FIG4 above. The communication device 800 performs the following scheme:

[0344] The transceiver module 801 is used to receive a reference signal from a terminal device; wherein the reference signal is a signal received by the terminal device according to N R Reference signal resources and the first corresponding relationship are sent, or the terminal device sends N R Reference signal resources and the second corresponding relationship are sent; N R Each reference signal resource in the reference signal resources includes one or more reference signal ports, N R is an integer greater than or equal to 1; the terminal device includes one or more antenna ports; the first corresponding relationship includes N RThe corresponding relationship between the reference signal resources and the beams corresponding to each antenna port of the terminal device, and the corresponding relationship between one or more reference signal ports included in each reference signal resource and one or more antenna ports; the second corresponding relationship includes N R The corresponding relationship between each reference signal resource and one or more antenna ports, and the corresponding relationship between one or more reference signal ports included in each reference signal resource and the beam corresponding to each antenna port of the terminal device.

[0345] For another example, the communication device 800 executes the following scheme:

[0346] The transceiver module 801 is used to send the first configuration information to the terminal device; wherein the first configuration information is used to configure N R Reference signal resources, the terminal device includes one or more antenna ports, N R Each reference signal resource in the reference signal resources includes one or more reference signal ports, N R The reference signal resources correspond to the beams corresponding to each antenna port of the terminal device, and the one or more reference signal ports included in each reference signal resource correspond to the one or more antenna ports of the terminal device; or, N R The reference signal resources correspond to one or more antenna ports of the terminal device, and the one or more reference signal ports included in each reference signal resource correspond to the beam corresponding to each antenna port of the terminal device; N R is an integer greater than or equal to 1.

[0347] It should be understood that the specific process of each module executing the above corresponding process has been described in detail in the above method embodiment, and for the sake of brevity, it will not be repeated here.

[0348] The processing module 802 in the above embodiment can be implemented by at least one processor or processor-related circuits. The transceiver module 801 can be implemented by a transceiver or transceiver-related circuits. The transceiver module 801 can also be referred to as a communication module or communication interface. The storage module can be implemented by at least one memory.

[0349] The present application also provides a communication device 900. The communication device 900 includes a processor 910, which is coupled to a memory 920. The memory 920 is used to store computer programs or instructions and / or data. The processor 910 is used to execute the computer programs or instructions and / or data stored in the memory 920, so that the method in the above method embodiment is executed.

[0350] Optionally, the communication device 900 includes one or more processors 910.

[0351] Optionally, as shown in FIG9 , the communication device 900 may further include a memory 920 .

[0352] Optionally, the communication device 900 may include one or more memories 920 .

[0353] Optionally, the memory 920 may be integrated with the processor 910 or provided separately.

[0354] 9 , the communication device 900 may further include a transceiver 930 , which is configured to receive and / or transmit signals. For example, the processor 910 is configured to control the transceiver 930 to receive and / or transmit signals.

[0355] As a solution, the communication device 900 is used to implement the operations performed by the terminal device in the above method embodiment.

[0356] For example, the processor 910 is used to implement the processing-related operations performed by the terminal device in the above method embodiment, and the transceiver 930 is used to implement the sending and receiving-related operations performed by the terminal device in the above method embodiment.

[0357] As another solution, the communication device 900 is used to implement the operations performed by the network device in the above method embodiment.

[0358] For example, the processor 910 is used to implement the processing-related operations performed by the network device in the above method embodiment, and the transceiver 930 is used to implement the sending and receiving-related operations performed by the network device in the above method embodiment.

[0359] The present application further provides a communication device 1000, which may be a terminal device, a processor of a terminal device, or a chip. The communication device 1000 may be used to execute the operations executed by the terminal device in the above method embodiment.

[0360] When the communication apparatus 1000 is a terminal device, a simplified schematic diagram of the terminal device is shown in Figure 10. As shown in Figure 10, the terminal device includes a processor, a memory, and a transceiver.

[0361] The memory can store computer program codes. The transceiver includes a transmitter 1031 , a receiver 1032 , a radio frequency circuit (not shown in the figure), an antenna 1033 , and an input and output device (not shown in the figure).

[0362] The processor is primarily used to process communication protocols and communication data, control terminal devices, execute software programs, and process software program data. Memory is primarily used to store software programs and data. Radio frequency circuits are primarily used to convert baseband signals into radio frequency signals and process radio frequency signals. Antennas are primarily used to transmit and receive radio frequency signals in the form of electromagnetic waves. Input / output devices. For example, touch screens, displays, and keyboards are primarily used to receive user input and output data to the user. It should be noted that some types of terminal devices may not have input / output devices.

[0363] When data needs to be sent, the processor performs baseband processing on the data to be sent, and then outputs the baseband signal to the RF circuit. The RF circuit performs RF processing on the baseband signal and then sends the RF signal outward in the form of electromagnetic waves through the antenna. When data is sent to the terminal device, the RF circuit receives the RF signal through the antenna, converts the RF signal into a baseband signal, and outputs the baseband signal to the processor. The processor converts the baseband signal into data and processes the data. For ease of explanation, Figure 10 shows only one memory, processor, and transceiver. In an actual terminal device product, there may be one or more processors and one or more memories. The memory may also be referred to as a storage medium or a storage device, etc. The memory may be set independently of the processor or integrated with the processor, and this is not limited in the embodiments of the present application.

[0364] In the embodiment of the present application, the antenna and radio frequency circuit with transceiver functions can be regarded as the transceiver module of the terminal device, and the processor with processing function can be regarded as the processing module of the terminal device.

[0365] As shown in Figure 10, the terminal device includes a processor 1010, a memory 1020, and a transceiver 1030. The processor 1010 may also be referred to as a processing unit, a processing board, a processing module, a processing device, etc. The transceiver 1030 may also be referred to as a transceiver unit, a transceiver, a transceiver device, etc.

[0366] Alternatively, the device implementing the receiving function in transceiver 1030 may be considered a receiving module, and the device implementing the transmitting function in transceiver 1030 may be considered a transmitting module. That is, transceiver 1030 includes a receiver and a transmitter. A transceiver may also be sometimes referred to as a transceiver, a transceiver module, or a transceiver circuit. A receiver may also be sometimes referred to as a receiver, a receiving module, or a receiving circuit. A transmitter may also be sometimes referred to as a transmitter, a transmitting module, or a transmitting circuit.

[0367] The processor 1001 is configured to execute processing actions on the terminal device side in the embodiment shown in FIG. 4 , and the transceiver 1030 is configured to execute transceiver actions on the terminal device side in the embodiment shown in FIG. 4 . For example, the transceiver 1030 is configured to execute steps 401 to 402 in the embodiment shown in FIG. 4 . Optionally, the transceiver 1030 is further configured to execute steps 401a, 403, and 404 in the embodiment shown in FIG. 4 .

[0368] It should be understood that FIG10 is merely an example and not a limitation, and the terminal device including the transceiver module and the processing module may not rely on the structure shown in FIG7 or FIG10.

[0369] When the communication device 1000 is a chip, the chip includes a processor, memory, and a transceiver. The transceiver can be an input / output circuit or a communication interface; the processor can be a processing module, microprocessor, or integrated circuit integrated on the chip. The sending operation of the terminal device in the above method embodiment can be understood as the chip's output, and the receiving operation of the terminal device in the above method embodiment can be understood as the chip's input.

[0370] The present application further provides a communication device 1100, which can be a network device or a chip. The communication device 1100 can be used to execute the operations executed by the network device in the embodiment shown in FIG. 4 .

[0371] When the communication device 1100 is a network device, for example, a base station. Figure 11 shows a simplified schematic diagram of the base station structure. The base station includes part 1110, part 1120, and part 1130. Part 1110 is mainly used for baseband processing, controlling the base station, etc.; part 1110 is usually the control center of the base station, which can usually be called a processor, and is used to control the base station to perform the processing operations on the network device side in the above method embodiment. Part 1120 is mainly used to store computer program code and data. Part 1130 is mainly used for receiving and transmitting radio frequency signals and converting radio frequency signals into baseband signals; part 1130 can usually be called a transceiver module, a transceiver, a transceiver circuit, or a transceiver, etc. The transceiver module of part 1130 can also be called a transceiver or a transceiver, etc., which includes an antenna 1133 and a radio frequency circuit (not shown in the figure), wherein the radio frequency circuit is mainly used for radio frequency processing. Optionally, the device for implementing the receiving function in section 1130 may be considered a receiver, and the device for implementing the transmitting function may be considered a transmitter, that is, section 1130 includes a receiver 1132 and a transmitter 1131. A receiver may also be referred to as a receiving module, a receiver, or a receiving circuit, and a transmitter may be referred to as a transmitting module, a transmitter, or a transmitting circuit.

[0372] Sections 1110 and 1120 may include one or more boards, each of which may include one or more processors and one or more memories. The processor is used to read and execute programs in the memory to implement baseband processing functions and control the base station. If multiple boards are present, the boards may be interconnected to enhance processing capabilities. As an optional implementation, multiple boards may share one or more processors, multiple boards may share one or more memories, or multiple boards may simultaneously share one or more processors.

[0373] For example, the transceiver module in part 1130 is used to execute the transceiver-related processes executed by the network device in the embodiment shown in Figure 4. The processor in part 1110 is used to execute the processing-related processes executed by the network device in the embodiment shown in Figure 4.

[0374] It should be understood that FIG11 is merely an example and not a limitation, and the network device including the processor, memory, and transceiver may not rely on the structure shown in FIG8 or FIG11.

[0375] When the communication device 1100 is a chip, the chip includes a transceiver, a memory, and a processor. The transceiver can be an input / output circuit or a communication interface; the processor can be a processor, microprocessor, or integrated circuit integrated on the chip. The network device's sending operation in the above method embodiment can be understood as the chip's output, and the network device's receiving operation in the above method embodiment can be understood as the chip's input.

[0376] An embodiment of the present application also provides a computer-readable storage medium on which computer instructions for implementing the method executed by a terminal device or a network device in the above method embodiment are stored.

[0377] For example, when the computer program is executed by a computer, the computer can implement the method performed by the terminal device or the network device in the above method embodiment.

[0378] An embodiment of the present application also provides a computer program product comprising instructions, which, when executed by a computer, enables the computer to implement the method executed by the terminal device or the network device in the above method embodiment.

[0379] An embodiment of the present application also provides a communication system, which includes the terminal device in the above embodiment and the network device in the above embodiment.

[0380] An embodiment of the present application further provides a chip device, including a processor, configured to call a computer program or computer instruction stored in the memory so that the processor executes the method provided in the embodiment shown in FIG. 4 .

[0381] In a possible implementation, the input of the chip device corresponds to the receiving operation in the embodiment shown in FIG. 4 , and the output of the chip device corresponds to the sending operation in the embodiment shown in FIG. 4 .

[0382] Optionally, the processor is coupled to the memory via an interface.

[0383] Optionally, the chip device further includes a memory, in which computer programs or computer instructions are stored.

[0384] The processor mentioned in any of the above may be a general-purpose central processing unit, a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling the execution of the program of the method provided in the embodiment shown in FIG4 . The memory mentioned in any of the above may be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM), etc.

[0385] Those skilled in the art can clearly understand that, for the sake of convenience and brevity of description, the explanation and beneficial effects of the relevant contents in any of the communication devices provided above can refer to the corresponding method embodiments provided above, and will not be repeated here.

[0386] 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 an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0387] 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.

[0388] In addition, the functional units in the various embodiments of the present application may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0389] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the part that essentially contributes to the technical solution of the present application or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

[0390] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A reference signal sending method, characterized in that: The method comprises: Receive first configuration information from a network device, wherein the first configuration information is used to configure N R reference signal resources, the N R Each reference signal resource in the N reference signal resources includes one or more reference signal ports. R is an integer greater than or equal to 1; According to the N R reference signal resources and a first corresponding relationship to send a reference signal, or, according to the N R A reference signal resource and a second corresponding relationship are used to send a reference signal; Among them, the first corresponding relationship includes the N R A correspondence between a reference signal resource and a beam corresponding to each antenna port of a terminal device, and a correspondence between one or more reference signal ports included in each reference signal resource and one or more antenna ports of the terminal device; the second correspondence includes the N R The corresponding relationship between each reference signal resource and one or more antenna ports of the terminal device, and the corresponding relationship between one or more reference signal ports included in each reference signal resource and the beam corresponding to each antenna port of the terminal device.

2. The method according to claim 1, characterized in that The method further comprises: Receive at least one of the following from the network device: first information, second information, or third information; wherein the first information indicates an antenna port used for uplink transmission, the second information indicates a beam adopted by each antenna port used for uplink transmission, and the third information indicates a codebook used for uplink transmission.

3. The method according to claim 1 or 2, characterized in that: The method further comprises: Sending capability information to the network device, the capability information including at least one of the following: the number of antenna ports of the terminal device, the number of beams corresponding to each antenna port of the terminal device, the number of antenna ports supported by the terminal device for simultaneous transmission, one or more first antenna port combinations supported by the terminal device, or a corresponding relationship supported by the terminal device; The correspondence relationships supported by the terminal device include one or more of the first correspondence relationship and the second correspondence relationship.

4. A reference signal receiving method, characterized in that: The method comprises: Sending first configuration information to the terminal device, wherein the first configuration information is used to configure N R reference signal resources, the N R Each reference signal resource in the N reference signal resources includes one or more reference signal ports. R is an integer greater than or equal to 1; Receive a reference signal from the terminal device; wherein the reference signal is a signal generated by the terminal device according to the N R The reference signal resources are sent according to the first corresponding relationship, or the terminal device sends the reference signal resources according to the N R reference signal resources and a second corresponding relationship; the first corresponding relationship includes the N R The corresponding relationship between the reference signal resources and the beams corresponding to each antenna port of the terminal device, and the corresponding relationship between one or more reference signal ports included in each reference signal resource and one or more antenna ports of the terminal device; the second corresponding relationship includes the N R The corresponding relationship between each reference signal resource and one or more antenna ports of the terminal device, and the corresponding relationship between one or more reference signal ports included in each reference signal resource and the beam corresponding to each antenna port of the terminal device.

5. The method according to claim 4, characterized in that The method further comprises: Send at least one of the following to the terminal device: first information, second information, or third information; wherein the first information indicates the antenna port used for uplink transmission, the second information indicates the beam used by each antenna port used for uplink transmission, and the third information indicates the codebook used for uplink transmission.

6. The method according to claim 2 or 4, characterized in that: The uplink transmission includes at least one of the following: physical uplink shared channel PUSCH transmission, physical uplink control channel PUCCH transmission, or sounding reference signal SRS transmission.

7. The method according to any one of claims 4 to 6, characterized in that The method further comprises: Receive capability information from the terminal device, the capability information including at least one of the following: the number of antenna ports of the terminal device, the number of beams corresponding to each antenna port of the terminal device, the number of antenna ports supported by the terminal device for simultaneous transmission, one or more first antenna port combinations supported by the terminal device, or corresponding relationships supported by the terminal device; the corresponding relationships supported by the terminal device include one or more of the first corresponding relationships and the second corresponding relationships.

8. The method according to claim 3 or 7, characterized in that: Among the one or more first antenna port combinations, multiple antenna ports in the same first antenna port combination are not used for simultaneous transmission, and / or multiple antenna ports in different first antenna port groups can be used for simultaneous transmission; or, Among the one or more first antenna port combinations, multiple antenna ports in the same first antenna port combination can be used for simultaneous transmission, and / or multiple antenna ports in different first antenna port combinations are not used for simultaneous transmission.

9. The method according to claim 2, 5 or 6, characterized in that: The first information includes a first bit map, the bits in the first bit map correspond to the antenna ports of the terminal device, and the values ​​of the bits in the first bit map are used to indicate whether the antenna port corresponding to the bits is used for uplink transmission.

10. The method according to claim 9, characterized in that The first bitmap includes N bits, the N bits correspond one-to-one to the N antenna ports of the terminal device, and N is an integer greater than or equal to 1; When the value of one of the N bits is 1, it is used to indicate that the antenna port corresponding to the bit is used for uplink transmission; when the value of one of the N bits is 0, it is used to indicate that the antenna port corresponding to the bit is not used for uplink transmission; or, When the value of one of the N bits is 1, it is used to indicate that the antenna port corresponding to the bit is not used for uplink transmission; when the value of one of the N bits is 0, it is used to indicate that the antenna port corresponding to the bit is used for uplink transmission.

11. The method according to claim 2, 5 or 6, characterized in that: The first information includes a first field, a value of the first field is used to indicate a second antenna port combination among one or more second antenna port combinations, and the antenna port included in the second antenna port combination is used for uplink transmission.

12. The method according to claim 11, characterized in that The one or more second antenna port combinations are antenna port combinations including an antenna port number not exceeding X, where X is the number of antenna ports supported by the terminal device for simultaneous transmission.

13. The method according to claim 11 or 12, characterized in that: The one or more second antenna port combinations are antenna port combinations supported by the terminal device for simultaneous transmission.

14. The method according to any one of claims 2, 5, 6, 9 to 13, characterized in that The second information includes a second field, the second field includes N groups of bits, each group of bits in the N groups of bits includes S bits, N is the number of antenna ports of the terminal device, the p-th group of bits in the N groups of bits corresponds to the p-th antenna port of the terminal device, the p-th group of bits is used to indicate the beam used by the p-th antenna port, p is an integer greater than or equal to 1 and less than or equal to N, and S is a positive integer.

15. The method according to any one of claims 2, 5, 6, 9 to 13, characterized in that The second information includes a third field, the third field includes X groups of bits, each group of bits in the X groups of bits includes S bits, X is the number of antenna ports for simultaneous transmission supported by the terminal device, the qth group of bits in the X groups of bits corresponds to the qth antenna port for uplink transmission among one or more antenna ports for uplink transmission indicated by the network device to the terminal device, the qth group of bits is used to indicate the beam used by the qth antenna port for uplink transmission, q is an integer greater than or equal to 1 and less than or equal to X, and S is a positive integer.

16. The method according to claim 15, characterized in that The one or more antenna ports used for uplink transmission are indicated by the first information.

17. The method according to any one of claims 2, 5, 6, 9 to 16, characterized in that The third information indicates a codebook used for uplink transmission, including: The third information indicates one or more codebooks selected from the first codebook set; The first codebook set is determined based on the number of antenna ports indicated by the first information and a first parameter, wherein the first parameter includes one or more of the following: the state in which the transform precoder is configured, the maximum rank number adopted for uplink transmission, whether the terminal device is configured in uplink full-power transmission mode, or the uplink full-power transmission mode configured by the terminal device; the state in which the transform precoder is configured is on or off.

18. The method according to any one of claims 1 to 17, characterized in that The N R Each of the reference signal resources includes N P reference signal ports, the terminal device includes N P antenna ports, the N P Each antenna port corresponds to N R beams, the N P is an integer greater than or equal to 1; The first corresponding relationship includes: R The reference signal resources and the N P Each antenna port corresponds to N R The beams correspond one to one, and the N R Each of the reference signal resources includes N P The reference signal ports are connected to the N P The antenna ports correspond one to one.

19. The method according to claim 18, characterized in that The first corresponding relationship includes: R The reference signal port j included in the reference signal resource i of the N reference signal resources is P The beam i corresponding to the antenna port j among the antenna ports corresponds to the N P The beam i corresponding to the antenna port j among the antenna ports is used to send the reference signal on the reference signal port j included in the reference signal resource i, and the i is greater than or equal to 1 and less than or equal to the N R An integer, wherein j is greater than or equal to 1 and less than or equal to N P An integer.

20. The method according to any one of claims 1 to 19, characterized in that The N R Each of the reference signal resources includes N P reference signal ports, the terminal device includes N R antenna ports, the N R Each antenna port corresponds to N P beams, the N P is an integer greater than or equal to 1; The second corresponding relationship includes: R The reference signal resources and the N R The antenna ports correspond one to one, and the N R Each of the reference signal resources includes N P The reference signal ports are connected to the N R Each antenna port corresponds to N P The beams correspond one to one.

21. The method according to claim 20, characterized in that The second corresponding relationship includes: R The reference signal resource a in the reference signal resources includes a reference signal port b and the N P The antenna port a in the reference signal ports corresponds to the beam b corresponding to the N P The beam b corresponding to the antenna port a among the reference signal ports is used to send the reference signal on the reference signal port b included in the reference signal resource a, and the a is greater than or equal to 1 and less than or equal to the N R An integer, wherein b is greater than or equal to 1 and less than or equal to N P An integer.

22. The method according to any one of claims 1 to 21, characterized in that The first configuration information also includes the N R A reference signal resource type parameter, The type parameter is used to indicate that the N R A reference signal corresponding to a reference signal resource; or The type parameter is used to indicate that the N R The reference signal corresponding to the reference signal resource.

23. The method according to any one of claims 1 to 21, characterized in that The first configuration information also includes first indication information, and the first indication information is used to indicate that the N R A reference signal corresponding to a reference signal resource; or The first indication information is used to indicate that the N R A reference signal corresponding to a reference signal resource; or The first indication information is used to indicate that one of the first corresponding relationship and the second corresponding relationship is selected to send the N R The reference signal corresponding to the reference signal resource.

24. A communication device, characterized in that: The communication device includes a transceiver module; The transceiver module is used to perform the method according to any one of claims 1 to 3 and 8 to 23; or, The transceiver module is used to execute the method as claimed in any one of claims 4 to 23.

25. A communication device, characterized in that: The communication device comprises a processor; the processor is used to execute a computer program or computer instructions in a memory to implement the method as claimed in any one of claims 1 to 3, 8 to 23, or to implement the method as claimed in any one of claims 4 to 23.

26. The communication device according to claim 25, characterized in that The communication device further comprises the memory, which is used to store the computer program or computer instructions.

27. A computer-readable storage medium, characterized in that: A computer program is stored thereon, and when the computer program is executed by a communication device, the communication device executes the method according to any one of claims 1 to 23.

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