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

Abstract

The invention discloses a reference signal sending method, a reference signal receiving method and a related device. The method comprises the following steps: sending a reference signal according to NR reference signal resources and a first corresponding relation, or sending the reference signal according to the NR reference signal resources and a second corresponding relation, each reference signal resource in the NR reference signal resources comprises one or more reference signal ports, and NR is an integer greater than or equal to 1; the first corresponding relationship comprises a corresponding relationship between the NR reference signal resources and a beam corresponding to each antenna port of the terminal equipment, and a corresponding relationship between one or more reference signal ports included in each reference signal resource and one or more antenna ports of the terminal equipment; the second corresponding relationship comprises a corresponding relationship between the NR reference signal resources and one or more antenna ports of the terminal equipment, and a corresponding relationship between one or more reference signal ports included in each reference signal resource and a beam corresponding to each antenna port.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of communication technology, and in particular, to a reference signal sending method, a reference signal receiving method and related devices. Background Art

[0002] The fifth generation mobile communication system (5G) can use high-frequency communication, that is, use ultra-high frequency band (>6GHz) signals to transmit data. A major problem with high-frequency communication is that the signal energy drops sharply with the transmission distance, resulting in a short signal transmission distance. To overcome this problem, high-frequency communication uses analog beam technology, which concentrates the signal energy within a smaller angle range by weighting the antenna array to form a signal similar to a light beam (called an analog beam, or beam for short), thereby increasing the transmission distance.

[0003] 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 a plurality of 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 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.

[0004] It can be seen that the determination of the beam and the determination of the codebook are two independent processes, which are executed sequentially, resulting in a large and complex process delay, which in turn leads to low uplink transmission efficiency. Summary of the invention

[0005] The present application provides a reference signal sending method, a reference signal receiving method and related devices, which are used for a terminal device to transmit a reference signal according to N R The 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 RThe reference signal resource and the second corresponding relationship 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 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 one measurement process. This improves the uplink transmission efficiency.

[0006] 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, which is not specifically limited in the present application. 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, which is not specifically limited in the present application. In the first aspect and its possible implementation methods, the method is described as being performed by a terminal device. The method comprises:

[0007] The terminal device is based on N R The 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 a second corresponding relationship to 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.

[0008] It can be seen from the above technical solution that the terminal device passes N R A reference signal resource and a first corresponding relationship 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 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 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 uplink transmission efficiency.

[0009] 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 of the reference signal resources 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.

[0010] 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, which is not specifically limited in the present application. 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 in the present application, which is not specifically limited in the present application. In the second aspect and its possible implementation methods, the method is described as being executed by a terminal device. The method comprises:

[0011] 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 of 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 A reference signal resource corresponds to one or more antenna ports of the terminal device, and one or more reference signal ports included in each reference signal resource correspond to a beam corresponding to each antenna port of the terminal device; N R is an integer greater than or equal to 1.

[0012] 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. RThe reference signal resource sends a reference signal to the network device, which is beneficial 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 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 uplink transmission efficiency.

[0013] Based on the second aspect, in a possible implementation manner, the method further includes: the terminal device performs the following operations according to N R The 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 a second corresponding relationship to 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 a 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 easy for the network device to determine the channel quality of each beam corresponding to each antenna port by measuring the reference signal, and 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 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 uplink transmission efficiency.

[0014] 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.

[0015] 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 (physical uplink shared channel, PUSCH) transmission, physical uplink control channel (physical uplink control channel, PUCCH) transmission, or sounding reference signal (sounding reference signal, SRS) transmission.

[0016] Based on the first aspect or the second aspect, in a possible implementation, the method further includes: the terminal device sends capability information to the network device, and 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. In this implementation, the terminal device reports the capability information to the network device, so that the network device configures appropriate reference signal resources for the terminal device, and facilitates 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.

[0017] 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, which is not specifically limited in the present application. 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, which is not specifically limited in the present application. In the third aspect and its possible implementation methods, the method is described as being performed by a network device. The method comprises:

[0018] 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 The reference signal resources and the first corresponding relationship are sent, or the terminal device sends the reference signal resources according to N R Reference signal resources and the second corresponding relationship are sent; N R Each of 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.

[0019] It can be seen from the above technical solution that the network device receives the reference signal from the terminal device. The reference signal is a signal received by the terminal device according to N R The reference signal resources and the first corresponding relationship are sent, or the terminal device sends the reference signal resources according to N R A reference signal resource and a second corresponding relationship are sent. This makes it easy for the network device to determine the channel quality of each beam corresponding to each antenna port by measuring the reference signal, and it is easy for the network device to select the beam and codebook for uplink transmission according to the quality of each beam corresponding to each antenna port. That is, the network device can determine the beam and codebook for uplink transmission in one 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 delay of the process, thereby improving the uplink transmission efficiency.

[0020] Based on the third aspect, in a possible implementation manner, 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 A reference signal resource is used to send a reference signal to a network device.

[0021] 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, which is not specifically limited in this application. 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, which is not specifically limited in this application. In the fourth aspect and its possible implementation methods, the method is described as being performed by a network device. Including:

[0022] The network device sends 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 of the reference signal resources includes one or more reference signal ports, N RThe 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 A reference signal resource corresponds to one or more antenna ports of the terminal device, and one or more reference signal ports included in each reference signal resource correspond to a 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 The reference signal resource sends a reference signal to the network device, which is beneficial 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 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 uplink transmission efficiency.

[0023] 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 generated by the terminal device according to N R The reference signal resources and the first corresponding relationship are sent, or the terminal device sends the reference signal resources according to N R reference signal resources and a second corresponding relationship; 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 a 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 easy for the network device to determine the channel quality of each beam corresponding to each antenna port by measuring the reference signal, and 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 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 uplink transmission efficiency.

[0024] Based on the third aspect or the fourth aspect, in a possible implementation, the method further includes: the network device sends 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 for uplink transmission, and the third information indicates the codebook used for uplink transmission. Thus, 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. Thus, the uplink transmission efficiency is improved and the uplink transmission performance is improved.

[0025] 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.

[0026] Based on the third aspect or the fourth aspect, in a possible implementation, the method further includes: the network device receives capability information from the terminal device, 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 correspondence supported by the terminal device; the correspondence supported by the terminal device includes one or more of the first correspondence and the second correspondence. In this implementation, the network device obtains the capability information of the terminal device, so that the network device can configure a suitable reference signal resource for the terminal device, and can transmit reference signals between the terminal device and the network device to measure the channel quality of each beam of each antenna port.

[0027] Based on any one of the first to fourth aspects, 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. In this implementation, two possible implementations of whether the antenna ports in the one or more first antenna port combinations support simultaneous transmission are defined.

[0028] Based on any one of the first to fourth aspects, in a possible implementation, the first information includes a first bitmap, the bits in the first bitmap correspond to the antenna ports of the terminal device, and the values ​​of the bits in the first bitmap are used to indicate whether the antenna port corresponding to the bit is used for uplink transmission. It can be seen that a specific implementation method of the first information indicating the antenna port used for uplink transmission is provided to implement the indication of the antenna port.

[0029] 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 is indicated to use the antenna port corresponding to the bit through the value of the bit, thereby realizing the indication of the antenna port. Further, it is also beneficial to reduce the indication overhead.

[0030] Based on any one of the first to fourth aspects, 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. In this implementation, the network device can indicate a second antenna port combination through the first field, thereby indicating the antenna port. The indication overhead is small.

[0031] Based on any one of the first to fourth aspects, in a possible implementation manner, 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. In this implementation manner, the antenna port combinations included in the one or more second antenna port combinations are defined, so that the network device selects a second antenna port combination therefrom and indicates the selected second antenna port combination to the terminal device.

[0032] Based on any one of the first aspect to the fourth aspect, in a possible implementation, one or more second antenna port combinations are antenna port combinations for simultaneous transmission supported by the terminal device, thereby facilitating the network device to select antenna ports that can be used for simultaneous transmission for the terminal device, thereby improving uplink transmission efficiency.

[0033] Based on any one of the first to fourth aspects, in a 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. Thereby, the indication of the beams used by each antenna port indicated by the first information is achieved.

[0034] Based on any one of the first to fourth aspects, 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 terminal device, the qth group of bits in the X groups of bits corresponds to the qth antenna port for uplink transmission, 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, X is the number of antenna ports for simultaneous transmission supported by the terminal device. Therefore, the indication overhead of the third field is small. The indication of the beams used by each antenna port indicated by the first information is realized.

[0035] Based on any one of the first aspect to the fourth aspect, in a possible implementation manner, the one or more antenna ports used for uplink transmission are indicated by first information.

[0036] Based on any one of the first to fourth aspects, in a possible implementation, 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 according to 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 used for uplink transmission, whether the terminal device is configured with an 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. 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 is conducive to the implementation of the solution.

[0037] Based on any one of the first to fourth aspects, in a possible implementation manner, N R Each of the reference signal resources includes NP 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 of the reference signal resources includes N P Reference signal ports and N P The antenna ports correspond one to one. In this implementation, a possible implementation of the first correspondence is shown. The reference signal resource corresponds one to one to the beam corresponding to each antenna port, and the reference signal port included in each reference signal resource corresponds one to one to the antenna port. This facilitates the terminal device to send the reference signal of the reference signal port of the corresponding reference signal resource in the beam of the appropriate antenna port. It is convenient for the network device to measure the reference signal to obtain the channel quality of each beam of each antenna port.

[0038] Based on any one of the first aspect to the fourth aspect, 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 in 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 In this implementation, the correspondence between the beam of the antenna port 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. It is convenient for the network device to measure the reference signal to obtain the channel quality of each beam of each antenna port.

[0039] Based on any one of the first to fourth aspects, in a possible implementation manner, N R Each of the reference signal resources 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; the second corresponding relationship includes: N R Reference signal resources and N R There is a one-to-one correspondence between N antenna ports. R Each of the reference signal resources includes N P Reference signal ports and N R Each antenna port corresponds to N P The reference signal resources correspond to the antenna ports one-to-one. In this implementation, a possible implementation of the first correspondence is shown. The reference signal resources correspond to the antenna ports one-to-one, and the reference signal ports included in each reference signal resource correspond to the beams corresponding to each antenna port one-to-one. This facilitates the terminal device to send the reference signal of the reference signal port of the corresponding reference signal resource in the beam of the appropriate antenna port. It is convenient for the network device to measure the reference signal to obtain the channel quality of each beam of each antenna port.

[0040] Based on any one of the first aspect to the fourth aspect, 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 P In this implementation, the correspondence between the beam of the antenna port 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. It is convenient for 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 aspect to the fourth aspect, 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 A reference signal corresponding to a reference signal resource; or, the type parameter is used to indicate that N reference signals are sent using a second corresponding relationship. R In this implementation, a type parameter is used to indicate that the terminal device sends N reference signals corresponding to the reference signal resources using the first corresponding relationship. R A reference signal corresponding to a reference signal resource; or, a type parameter is used to indicate that the terminal device uses a second corresponding relationship to send N RThe 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.

[0042] Based on any one of the first aspect to the fourth 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 N R A reference signal corresponding to a reference signal resource; or

[0043] 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

[0044] 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 indicates that the terminal device sends the reference signal using the corresponding corresponding relationship, thereby implementing the indication of the terminal device sending the reference signal.

[0045] It should be noted that the method provided in the present application is also applicable to the scenario where the network device performs downlink transmission to the 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.

[0046] In the downlink transmission scenario, in any one of the first and second aspects, the terminal device transmits the N R The 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 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 The 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 and a second corresponding relationship are sent.

[0047] In the scenario of downlink transmission, in any 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 RThe method further comprises the following steps: a) a correspondence between reference signal resources and one or more antenna ports of a network device, and b) a correspondence between one or more reference signal ports included in each reference signal resource and a beam corresponding to each antenna port of the network device.

[0048] In the downlink transmission scenario, in any one of the first to fourth aspects above, the first configuration information is replaced by: 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 of 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 A reference signal resource corresponds to one or more antenna ports of the network device, and 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; N R is an integer greater than or equal to 1.

[0049] In the scenario of downlink transmission, 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 The 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.

[0050] 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.

[0051] In the downlink transmission scenario, in any of the third and fourth aspects above, 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.

[0052] 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 used by each antenna port used for downlink transmission, and the third information indicates the codebook used for downlink transmission.

[0053] 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.

[0054] In the downlink transmission scenario, in any of the first to fourth aspects above, 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.

[0055] In the downlink transmission scenario, in any of the first to fourth aspects above, 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 replacement description is: the first bit map includes N bits, 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.

[0056] In the scenario of downlink transmission, in any of the first to fourth aspects above, 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, and the replacement description is: 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 downlink transmission.

[0057] In the downlink transmission scenario, in any of the first to fourth aspects above, one or more second antenna port combinations are antenna port combinations in which the number of antenna ports included does not exceed X, where X is the number of antenna ports supported by the terminal device for simultaneous transmission, and 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, where X is the number of antenna ports supported by the network device for simultaneous transmission.

[0058] In the downlink transmission scenario, in any of the first to fourth aspects above, 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.

[0059] In the downlink transmission scenario, in any of the first to fourth aspects above, the pth group of bits in the N groups of bits corresponds to the pth antenna port of the terminal device, and the replacement description is: the pth group of bits in the N groups of bits corresponds to the pth antenna port of the network device.

[0060] In the scenario of downlink transmission, 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 among the one or more antenna ports for uplink transmission indicated by the network device to the terminal device, and 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 among the 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.

[0061] In summary, in the scenario of downlink transmission, in any of the first to fourth aspects above, the uplink transmission is replaced with downlink transmission, and the antenna port for uplink transmission is replaced with the antenna port for downlink transmission. One or more antenna ports of the terminal device are replaced with one or more antenna ports of the network device. The terminal device is configured according to NR The 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 The 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.

[0062] 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, which is not specifically limited in the present application. It should be noted that in the present application, when referring to the first communication device, it may refer to the first communication device itself, or to a chip, functional module or integrated circuit in the first communication device that completes the method provided in the present application, etc., which is not specifically limited in the present application. In the fifth aspect and its possible implementation methods, the first communication device is taken as an example for description. Including:

[0063] Transceiver module, used according to N R The 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 to 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 method further comprises the steps of: determining a correspondence between each reference signal resource and one or more antenna ports, and determining a correspondence between one or more reference signal ports included in each reference signal resource and a beam corresponding to each antenna port of the first communication device.

[0064] Based on the fifth aspect, in a possible implementation manner, the transceiver module is further used to: receive first configuration information from the second communication device, the first configuration information being used to configure the N R Reference signal resources, N R Each of the reference signal resources includes one or more reference signal ports.

[0065] The sixth 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, which is not specifically limited in the present application. It should be noted that in the present application, when referring to the first communication device, it may refer to the first communication device itself, or to a chip, functional module or integrated circuit in the first communication device that completes the method provided in the present application, etc., which is not specifically limited in the present application. In the sixth aspect and its possible implementation methods, the first communication device is taken as an example for description. Including:

[0066] The transceiver module is used to receive the 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 of 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.

[0067] Based on the sixth aspect, in a possible implementation manner, the transceiver module is further used to: R The 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 to 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 method further comprises the steps of: determining a correspondence between each reference signal resource and one or more antenna ports, and determining a correspondence between one or more reference signal ports included in each reference signal resource and a beam corresponding to each antenna port of the first communication device.

[0068] 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 used by each antenna port used for uplink transmission, and the third information indicates the codebook used for uplink transmission.

[0069] 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.

[0070] 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 including 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 a 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.

[0071] 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 with an integrated circuit, or a chip, chip system, module or control unit in the aforementioned device or apparatus, which is not specifically limited in the present application. It should be noted that in the present 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 the present application, which is not specifically limited in the present application. In the seventh aspect and its possible implementation methods, the second communication device is used as an example for description. Including:

[0072] The transceiver module is used 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 The reference signal resources are sent according to the first corresponding relationship, or the first communication device sends the reference signal resources according to the first corresponding relationship. R Reference signal resources and the second corresponding relationship are sent; N R Each of 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 NR The method further comprises the steps of: determining a correspondence between each reference signal resource and one or more antenna ports, and determining a correspondence between one or more reference signal ports included in each reference signal resource and a beam corresponding to each antenna port of the first communication device.

[0073] Based on the seventh aspect, in a possible implementation manner, 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.

[0074] The eighth 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 with an integrated circuit, or a chip, chip system, module or control unit in the aforementioned device or apparatus, which is not specifically limited in the present application. It should be noted that in the present 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 the present application, which is not specifically limited in the present application. In the eighth aspect and its possible implementation methods, the second communication device is described as an example. Including:

[0075] A transceiver module is used to send 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 of 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.

[0076] Based on the eighth aspect, in a possible implementation manner, the transceiver module is further used to: receive a reference signal from the first communication device; wherein the reference signal is a signal generated by the first communication device according to N R The reference signal resources are sent according to the first corresponding relationship, or the first communication device sends the reference signal resources according to N R reference signal resources and a second corresponding relationship; the first corresponding relationship includes N RThe 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 method further comprises the steps of: determining a correspondence between each reference signal resource and one or more antenna ports, and determining a correspondence between one or more reference signal ports included in each reference signal resource and a beam corresponding to each antenna port of the first communication device.

[0077] 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 used by each antenna port used for uplink transmission, and the third information indicates the codebook used for uplink transmission.

[0078] 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.

[0079] 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 including 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 a 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.

[0080] Based on any one of aspects 5 to 8, in a possible implementation method, 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.

[0081] Based on any one of the fifth to eighth aspects, 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.

[0082] 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.

[0083] 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.

[0084] Based on any one of aspects 5 to 8, in a possible implementation, 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 first communication device for simultaneous transmission.

[0085] 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.

[0086] 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.

[0087] Based on any one of the fifth to eighth aspects, in a possible implementation method, 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, 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 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.

[0088] 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.

[0089] Based on any one of the fifth to eighth aspects, in a possible implementation method, the third information indicates a codebook used 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, 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 first communication device is configured with an uplink full-power transmission mode; the state in which the transform precoder is configured is on or off.

[0090] Based on any one of the fifth to eighth aspects, in a possible implementation manner, N R Each of the reference signal resources includes N P 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 of the reference signal resources includes N P Reference signal ports and N P The antenna ports correspond one to one.

[0091] 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 in 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.

[0092] Based on any one of the fifth to eighth aspects, in a possible implementation manner, NR Each of the reference signal resources 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 The antenna ports correspond one to one, N R Each of the reference signal resources includes N P Reference signal ports and N R Each antenna port corresponds to N P The beams correspond one to one.

[0093] Based on any one of the fifth to eighth 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 P An integer.

[0094] Based on any one of the fifth aspect to the eighth aspect, 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 A reference signal corresponding to a reference signal resource; or, the type parameter is used to indicate that N reference signals are sent using a second corresponding relationship. R The reference signal corresponding to the reference signal resource.

[0095] 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 N R A reference signal corresponding to a reference signal resource; or

[0096] 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

[0097] 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.

[0098] In a ninth aspect of the present application, a communication device is provided, the communication device comprising: a processor and a memory. The memory stores a computer program or a computer instruction, and the processor is used to call and run the computer program or the computer instruction stored in the memory, so that the processor implements any one of the implementation methods in any one of the first aspect to the eighth aspect.

[0099] Optionally, the communication device further includes a transceiver, and the processor is used to control the transceiver to send and receive signals.

[0100] In a tenth aspect, the present application provides a communication device, the communication device comprising a processor. The processor is used to call a computer program or computer instruction stored therein, so that the processor implements any one of the implementation methods in 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 send and receive signals.

[0102] 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.

[0103] A twelfth aspect of the present application provides a computer program product comprising instructions, characterized in that when it is run on a computer, it enables the computer to execute any implementation method of any one of the first to eighth aspects.

[0104] The thirteenth aspect of 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.

[0105] In a fourteenth aspect, the present application provides a chip device, 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 in any one of the first to eighth aspects described above.

[0106] Optionally, the processor is coupled to the memory via an interface.

[0107] In the fifteenth aspect of the present application, a communication system is provided, 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.

[0108] 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 of the reference signal resources 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 The 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 first corresponding relationship includes N R The second correspondence includes N R The corresponding relationship between the reference signal resources 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 terminal device. The terminal device uses N R A reference signal resource and a first corresponding relationship 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 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 one measurement process. There is no need to determine the beam and codebook for uplink transmission through multiple independent processes. Thereby reducing the complexity and delay of the process, and thus improving the uplink transmission efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0109] Figure 1 A schematic diagram of a communication system according to an embodiment of the present application;

[0110] Figure 2 Another schematic diagram of the communication system according to the embodiment of the present application;

[0111] Figure 3 A schematic diagram of a process for determining a beam and a codebook;

[0112] Figure 4 A schematic diagram of a reference signal sending method and a reference signal receiving method according to an embodiment of the present application;

[0113] Figure 5 A schematic diagram of a scenario of a reference signal sending method according to an embodiment of the present application;

[0114] Figure 6 This is another schematic diagram of a reference signal sending method according to an embodiment of the present application;

[0115] Figure 7 A schematic diagram of the structure of a communication device according to an embodiment of the present application;

[0116] Figure 8 This is another schematic diagram of the structure of the communication device according to the embodiment of the present application;

[0117] Fig. 9 This is another structural diagram of the communication device according to the embodiment of the present application;

[0118] Fig.10 A schematic diagram of the structure of a terminal device according to an embodiment of the present application;

[0119] Fig.11 A structural diagram of a base station according to an embodiment of the present application. DETAILED DESCRIPTION

[0120] The present application provides a reference signal sending method, a reference signal receiving method and related devices, which are used for a terminal device to transmit a reference signal according to N R The 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. 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 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 one measurement process.

[0121] The technical solution in this application will be described below in conjunction with the accompanying drawings.

[0122] The technical solution of the present application can be applied to various communication systems. For example, 5G system, new radio (NR) system, long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD), universal mobile telecommunication system (UMTS), mobile communication system after 5G network (for example, 6G mobile communication system), vehicle to everything (V2X) communication system, etc.

[0123] The communication system to which the present application is applicable includes a network device and a terminal device, and the network device and the terminal device can communicate using beams.

[0124] The terminal device and network device of this application are introduced below.

[0125] The terminal device may be a wireless terminal device capable of receiving network device scheduling information and indication information. The terminal device may be a device that provides voice and / or data connectivity to a user, or a handheld device with wireless connection function, or other processing device connected to a wireless modem.

[0126] Terminal equipment, also known as user equipment (UE), mobile station (MS), mobile terminal (MT), customer premise equipment (CPE), etc. Terminal equipment is a device that includes wireless communication functions (providing voice / data connectivity to users). For example, a handheld device with wireless connection function, or a vehicle-mounted device, etc. At present, some examples of terminal equipment are: mobile phones, tablet computers, laptops, PDAs, mobile internet devices (MID), wearable devices, virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, wireless terminals in Internet of Vehicles, wireless terminals in self-driving, wireless terminals in remote medical surgery, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, or wireless terminals in smart homes, etc. For example, the wireless terminal in unmanned driving can be a drone, helicopter, or airplane. For example, the wireless terminal in the Internet of Vehicles can be a vehicle-mounted device, vehicle equipment, vehicle-mounted module, vehicle, or ship. The wireless terminal in industrial control can be a camera, robot, or robotic arm. The wireless terminal in a smart home can be a TV, air conditioner, sweeper, speaker, or set-top box.

[0127] 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. It should be noted that in this application, when referring to the terminal device, it can refer to the terminal device itself, or it can refer to the chip, functional module or integrated circuit in the terminal device that completes the method provided in this application, and this application does not limit it.

[0128] A network device may be a device in a wireless network. For example, a network device may be a device deployed in a wireless access network to provide wireless communication functions for a terminal device. For example, a network device may be a radio access network (RAN) node that connects a terminal device to a wireless network, and may also be referred to as an access network device, a RAN entity, an access node, a network node, or a communication device.

[0129] 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 (open RAN, O-RAN or ORAN) or a cloud radio access network (cloud radio access network, CRAN). Alternatively, the network device may also be an access network device in a communication system obtained by integrating two or more of the above communication systems.

[0130] The network equipment includes, but is not limited to: evolved Node B (eNB), radio network controller (RNC), Node B (NB), base station controller (BSC), base transceiver station (BTS), home base station (e.g., home evolved NodeB, or home Node B, HNB), baseband unit (BBU), access point (AP) in wireless fidelity (WIFI) system, macro base station, micro base station, wireless relay node, donor node, wireless controller in CRAN scenario, wireless backhaul node, transmission point (TP) or transmission and receiving point (TRP), etc., and can also be network equipment in 5G mobile communication system. For example, the next generation NodeB (gNB), TRP, TP in NR system; or, one or a group of antenna panels (including multiple antenna panels) of base stations in 5G mobile communication system; or, the network equipment can 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. CU and DU can be set separately, or can also be included in the same network element, such as BBU. 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).

[0131] 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 (open centralized unit, O-CU) or an open CU, DU may also be called an open distributed unit (open distributed unit, O-DU), CU-CP may also be called an open-centralized unit-control plane (opencentralized unit control plane, O-CU-CP), CU-UP may also be called an open-centralized unit-user plane (open centralized unit user plane, O-CU-UP), and RU may also be called an open radio unit (openradio unit, O-RU), which is not limited in this application. Any of the CU, CU-CP, CU-UP, DU and RU in this application may be implemented together through a software module, a hardware module, or a combination of a software module and a hardware module.

[0132] Optionally, for network elements in the ORAN system, each network element may implement the protocol layer functions shown in Table 1 below.

[0133] Table 1

[0134]

[0135]

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

[0137] The following describes the architecture of the CU and DU of the 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 an access network device including a CU and a DU as an example. 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 (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 (for example, the RLC layer, the MAC layer, and / or the PHY layer, etc.).

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

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

[0141] CU-UP can interact with network elements in the core network that are used to implement user plane functions. Network elements in the core network that are used to 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, by delay, the functions that need to meet the smaller delay requirements for processing time are set in the DU, and the functions that do not need to meet the delay requirements are set in the CU.

[0143] DU and RU can cooperate to jointly implement the functions of the PHY layer. A DU can be connected to one or more RUs. The functions of DU and RU can be configured in a variety of ways according to the design. For example, DU is configured to implement baseband functions, and RU is configured to implement mid-RF functions. For another example, DU is configured to implement high-level functions in the PHY layer, and RU is configured to implement low-level functions in the PHY layer or to implement the low-level functions and RF functions. The high-level 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-level 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] The network device may also be a core network device. For example, the functional entity of the network device for the control plane includes 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, etc. The functional entity of the data plane includes the user plane function (UPF). The UPF is responsible for managing the transmission of user plane data, 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 it. 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 completes the method provided in this application, and this application does not limit it.

[0146] To facilitate understanding of the technical solution of the embodiment of the present application, Figure 1 and Figure 2Two possible communication systems to which the method provided in the embodiments of the present application is applicable are shown.

[0147] Figure 1 FIG. 1 is a schematic diagram of a communication system according to an embodiment of the present application. Figure 1 As shown, the communication system includes at least one network device. Figure 1 The network device 111 shown in the figure, the communication system also includes at least one terminal device. Figure 1 The terminal device 121 and the terminal device 122 are shown. The network device 111 can use beams to transmit with the terminal device 121 and the terminal device 122.

[0148] Figure 2 FIG. 1 is another schematic diagram of the communication system according to an embodiment of the present application. Figure 2 As shown, the communication system may include at least two network devices. Figure 2 The network device 211, the network device 212 and the network device 213 shown in FIG. The communication system also includes at least one terminal device. For example, Figure 2 The terminal device 221 shown in FIG. The terminal device 221 may be provided with communication services by multiple network devices. For example, Figure 2 As shown, network device 211 can use beam 1 to transmit with terminal device 221, and network device 212 can use beam 2 to transmit with terminal device 221. Network device 213 can use beam 3 to transmit with terminal device 221. That is to say, one terminal device can be provided with communication services by multiple network devices at the same time.

[0149] Some technical terms involved in this application are introduced below.

[0150] Beam: A beam is a communication resource. A beam can be a wide beam, a narrow beam, or other types of beams. The technology used to form the beam can be beamforming technology or other technical means. Beamforming technology can specifically include digital beamforming technology, analog beamforming technology, and hybrid digital / analog beamforming technology. Different beams can be considered as different resources.

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

[0152] The transmitter can send the same information or different information through different beams. Optionally, multiple beams with the same or similar communication characteristics can be regarded as one beam. One beam can include one or more antenna ports for transmitting data channels, control channels, and detection 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 one of a spatial relationship, a TCI-state, and a sounding reference signal (SRS) resource (indicating a transmit beam using the SRS). Therefore, the 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 may refer to the distribution of signal strength in different directions of space after a signal is transmitted by an antenna, and a receive beam may refer to the distribution of signal strength in different directions of space of a wireless signal received from an antenna. It is understandable that one or more antenna ports forming a beam may also be regarded as an antenna port set.

[0156] When the transmitter uses low-frequency or medium-frequency bands, it can send signals omnidirectionally or at a wider angle. When using high-frequency bands, thanks to the smaller carrier wavelength of the high-frequency communication system, an antenna array consisting of many antenna elements can be arranged at the transmitter and receiver. The transmitter sends signals with a certain beamforming weight, so that the transmitted signal forms a beam with spatial directivity. At the same time, the antenna array is used at the receiver to receive the signal with a certain beamforming weight. This is beneficial to increase the received power of the signal at the receiver and combat 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 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 arrival angle (angel-of-arrival, AoA), average arrival angle, AoA extension, 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 are 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 are from the same beam group.

[0158] Resources: In the communication protocol, the word beam is not directly used to characterize the beam, but other methods are used to implicitly describe beam-related operations. For example, in beam measurement, there is a corresponding relationship between the beam and the resource (for example, the network device uses a beam to send the resource corresponding to the beam), and the terminal device measures the quality of the resource, which 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), UE specific reference signals (US-RS), demodulation reference signals (DMRS), and synchronization system / physical broadcast channel blocks (SS / PBCH blocks). Among them, SS / PBCH blocks can be referred to as synchronization signal blocks (SSBs).

[0159] Resources can be configured through radio resource control (RRC) signaling. In terms of configuration structure, a resource is an information element (IE), including 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, the uplink signal is a reference signal, and the reference signal resource may include one or more reference signal ports and the transmission time and period of the reference signal. For example, the reference signal is an SRS, and the SRS resource includes one or more SRS ports.

[0160] Each resource has a unique index, which is used to identify the resource of the corresponding uplink signal or the resource of the corresponding downlink signal. It can be understood that the index of the resource can also be called the identification of the resource, 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, and a digital channel or a digital port can be considered as an RF channel, which can connect one or more physical antennas. Therefore, an antenna port can correspond to one or more physical antennas. For example, an antenna port corresponds to four physical antennas, and each physical antenna uses a beam to send signals. Then the antenna port corresponds to four beams.

[0162] Reference signal port: The reference signal resource may include one or more reference signal ports, each of which corresponds 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. The terminal device obtains the channel quality of multiple antenna ports or multiple beams corresponding to the multiple reference signal ports by measuring the reference signals on the multiple reference signal ports.

[0163] TCI: It can also be called TCI state (TCI-state). In uplink and downlink transmission, the correct beams need 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 a suitable 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, which can be specifically represented as 8 different field values ​​(codepoint). 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, which 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, which 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, through which the terminal device can determine the relevant information of the downlink transmit beam, thereby determining the appropriate receive beam to receive information from the network device. The TCI state is configured by the network device to each terminal device. The structure of the downlink TCI state is shown below:

[0166]

[0167] Each TCI state includes an index of its own (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 above two QCL-info, 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:

[0168] 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 acquired 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 the best to receive the reference signal resource, and use the receiving beam as the receiving beam of the reference signal resource.

[0169] 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 transmission beam as the reference signal resource. The terminal device can determine which transmission beam to use for uplink transmission through the 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 transmission beam. The structure of the uplink TCI state is shown below:

[0170]

[0171]

[0172] The specific steps are as follows:

[0173] The network device indicates a certain uplink TCI state to the terminal device through 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.

[0174] The following describes the configuration, activation and indication of TCI status.

[0175] 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, but these TCI-states are not used for data transmission beam indication, so they are not further explained here.

[0176] TCI-state activation: After the network device configures multiple TCI-states, it is also necessary to activate 8 of them through the media access control element (MAC-CE). These 8 TCI-states correspond one-to-one to the 8 values ​​of the TCI field in the DCI. That is, the 8 values ​​of the TCI field of the DCI correspond to which 8 TCI-states are determined by MACCE.

[0177] 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 the 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 use the corresponding beam to send or receive data.

[0178] It should be noted that the three descriptions of TCI state, TCI-state and TCI state in this article can be interchangeable.

[0179] 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. Figure 3As shown, the network device can configure a plurality of 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 send the SRS corresponding to the SRS resource, and the network device measures the SRS corresponding to the SRS resource to determine a suitable codebook. Then, the network device indicates the codebook to the terminal device. The terminal device can use the beam with better signal quality and the codebook to perform uplink transmission with the network device. It can be seen that the determination of the beam and the determination of the codebook are two independent processes, which are executed sequentially, resulting in a large and complex process delay, which in turn leads to low uplink transmission efficiency.

[0180] This application provides a corresponding technical solution for terminal equipment to R A reference signal resource and a first corresponding relationship 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 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 one measurement process. There is no need to determine the beam and codebook for uplink transmission through multiple independent processes. Thereby reducing the complexity and delay of the process, and thus improving the uplink transmission efficiency.

[0181] In the present application, optionally, uplink transmission includes at least one of the following: PUCCH transmission, SRS transmission, or PUSCH transmission.

[0182] The technical solution of the present application is introduced below in conjunction with specific embodiments.

[0183] Figure 4 This is a schematic diagram of an embodiment of the reference signal sending method and the reference signal receiving method of the present application. Figure 4 , methods include:

[0184] 401. The network device sends first configuration information to the terminal device. The first configuration information is used to configure the N R Reference signal resources. Correspondingly, the terminal device receives the first configuration information from the network device.

[0185] N R Each of the reference signal resources includes one or more reference signal ports. R is an integer greater than or equal to 1. For reference signal resources and reference signal ports, please refer to the relevant introduction of the aforementioned technical terms.

[0186] 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 each antenna port corresponding to one or more beams, please refer to the relevant introduction of the aforementioned technical terms. For example, Figure 5 As shown, 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 above Figure 5 The example shown 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.

[0187] 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.

[0188] Optional, N R Each of the reference signal resources 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 of the reference signal resources includes N P Reference signal ports and N P The antenna ports correspond one to one.

[0189] 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.

[0190] For example, Figure 5 As shown, 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 of 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 of SRS#1 Corresponding to antenna port Tx0, reference signal port of SRS#1 Corresponding to antenna port Tx1, reference signal port of SRS#1 Corresponding to antenna port Tx2, reference signal port of SRS#1 Corresponding antenna port Tx3.

[0191] In another possible implementation, N R A reference signal resource corresponds to one or more antenna ports of a terminal device, and one or more reference signal ports included in each reference signal resource correspond to a beam corresponding to each antenna port of the terminal device.

[0192] Optional, N R Each of the reference signal resources 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 N antenna ports. R Each of the reference signal resources includes N P Reference signal ports and N R Each antenna port corresponds to N P The beams correspond one to one.

[0193] 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.

[0194] For example, Figure 6 As shown, 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: 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. 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 of SRS#0 Corresponding to beam 1, reference signal port of SRS#0 Corresponding to beam 2. Reference signal port of SRS#1 Corresponding to beam 3, reference signal port of SRS#1 Corresponding to beam 4. Reference signal port of SRS#2 Corresponding to beam 5, reference signal port of SRS#2 Corresponding to beam 6. Reference signal port of SRS#3 Corresponding to beam 7, reference signal port of SRS#3 Corresponding to beam 8.

[0195] It should be noted that N is optional. R The reference signal resources are located in one or more SRS resource sets. Each SRS resource set may be an SRS resource set (SRS resource set) or a subset of an SRS resource set.

[0196] Optional, N R The reference signal resources are N R SRS resources, N R Each SRS resource includes one or more SRS ports.

[0197] Optionally, the first configuration information is carried in RRC signaling.

[0198] Optionally, in an ORAN system, the above step 401 may be performed by an O-CU-CP network element.

[0199] 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 A reference signal corresponding to a reference signal resource; or, the type parameter is used to instruct the terminal device to send N reference signals using the second corresponding relationship. R The reference signal corresponding to the reference signal resource.

[0200] For 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.

[0201] 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.

[0202] Table 2

[0203]

[0204] In another possible implementation, the first configuration information further includes N R When the value of 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 a reference signal resource; when the value of the type parameter is the third value, the type parameter is used to indicate that the second corresponding relationship is used to send N R The reference signal corresponding to the reference signal resource.

[0205] For 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.

[0206] 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 (herein referred to as the second value and the third value). In this implementation, the communication protocol supports the first corresponding relationship and the second corresponding relationship. 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 corresponding relationship. R When the value of the type parameter is the third value, the type parameter is used to indicate that the second corresponding relationship is used to send N reference signals corresponding to the reference signal resources. R It should be noted that the present application does not limit the names of the two values ​​(ie, the second value and the third value) of the type parameter, and the present application does not limit them specifically.

[0207] In another possible implementation, the first configuration information further includes first indication information, and the first indication information is used to indicate that the N R reference signal resources corresponding to the reference signal; or, 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.

[0208] For 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.

[0209] 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.

[0210] 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 reference signals corresponding to the reference signal resources; R The reference signal corresponding to the reference signal resource.

[0211] 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 the second corresponding relationship is used to send N reference signals corresponding to the reference signal resources. R The reference signal corresponding to the reference signal resource.

[0212] In another possible implementation, the first configuration information further includes first indication information, where 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.

[0213] In this implementation, the communication protocol supports the first correspondence relationship and the second correspondence relationship. The network device can instruct the terminal device to select one of the correspondence relationships to send N R The reference signal corresponding to the reference signal resource.

[0214] Optional, N R A reference signal resource meets one or more of the following requirements:

[0215] 1. The number of reference signal ports configured on the same symbol does 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.

[0216] 2. For the same reference signal resource, the number of reference signal ports configured on the same symbol shall not exceed Z.

[0217] 3. The reference signal ports corresponding to the antenna ports for simultaneous transmission are configured on the same symbol. Optionally, the terminal device may report the antenna ports for simultaneous transmission supported by the terminal device to the network device through capability information.

[0218] 4. The reference signal ports corresponding to the antenna ports that cannot be used for simultaneous transmission are not configured on the same symbol, that is, the reference signal ports corresponding to the 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.

[0219] 5. Different reference signal resources are sent through different symbols.

[0220] 6. Reference signal ports with the same number in different reference signal resources are sent through different symbols. Or,

[0221] 7. Different reference signal ports of the same reference signal resource are sent through different symbols.

[0222] Optionally, the above step 401 is an optional step. R The N reference signal resources may be preconfigured, or the N R The reference signal resource is determined by the terminal device itself and is not specifically limited in this application.

[0223] 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.

[0224] In the downlink transmission scenario, the first configuration information in step 401 above 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 of 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 A reference signal resource corresponds to one or more antenna ports of the network device, and 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; N R is an integer greater than or equal to 1. It can be seen that the first configuration information is similar to the first configuration information of the aforementioned step 401, and the details can be referred to the aforementioned related introduction.

[0225] 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.

[0226] In this implementation, optionally, N R Each of the reference signal resources includes N P Reference signal ports, network devices include 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 of the reference signal resources includes N P Reference signal ports and N P The antenna ports correspond one to one.

[0227] In another possible implementation, N R Each reference signal resource corresponds to one or more antenna ports of the network device, and one or more reference signal ports included in each reference signal resource corresponds to a beam corresponding to each antenna port of the network device.

[0228] In this implementation, optionally, N R Each of the reference signal resources includes N P Reference signal ports, network devices include 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 N antenna ports. R Each of the reference signal resources includes N P Reference signal ports and N R Each antenna port corresponds to N P The beams correspond one to one.

[0229] In the downlink transmission scenario, optional, N R The reference signal resources are N R CSI-RS resources, N R Each CSI-RS resource in the CSI-RS resources includes one or more CSI-RS ports. R The reference signal resources are 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.

[0230] Optional, Figure 4 The illustrated embodiment further includes step 401a. Step 401a may be performed before step 401.

[0231] 401a. The network device sends capability information to the terminal device. Correspondingly, the terminal device receives the capability information from the network device.

[0232] 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.

[0233] For example, Figure 5 As shown, the terminal device includes four antenna ports, namely antenna port Tx0 to antenna port Tx3. Each antenna port of the terminal device corresponds to two beams, such as Figure 5 It can be seen that 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. The number of antenna ports supported by the terminal device for simultaneous transmission is 2. For example, 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.

[0234] In a 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.

[0235] For example, Figure 5 As shown, 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.

[0236] 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.

[0237] For example, Figure 5 As shown, 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.

[0238] Optionally, in an ORAN system, the above step 401a may be performed by an O-CU-CP network element.

[0239] 402. The terminal device receives the R The 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.

[0240] Next, we will introduce 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.

[0241] 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.

[0242] 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 resources and reference signal ports 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 according to the channel information of each beam corresponding to each antenna port.

[0243] In one possible implementation, N R Each of the reference signal resources 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 of the reference signal resources includes N P Reference signal ports and N P The antenna ports correspond one to one.

[0244] For example, Figure 5 As shown, 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. The first corresponding relationship is introduced below in combination with Table 3 and Table 4. That is, the first corresponding relationship includes the corresponding relationship shown in Table 3 and the corresponding relationship shown in Table 4.

[0245] Table 3

[0246]

[0247] Table 4

[0248]

[0249] 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 in 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.

[0250] 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 resource includes 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 the 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 the 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 the 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 the reference signal resource 2 is sent through the second beam corresponding to antenna port 2.

[0251] It should be noted that, optionally, reference signal resource i refers to a reference signal resource with index i, or N RThe 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 the size of the index, for example, N R The 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.

[0252] 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.

[0253] It should be noted that, optionally, beam i refers to the beam with index i, or 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 the size of the index, 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.

[0254] For example, Figure 5 As shown, 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.

[0255] 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. Reference signal port of 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 antenna port Tx3.

[0256] 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 of SRS#0 Corresponding to the beam 3 of antenna port Tx1. Reference signal port of SRS#0 Beam 5 corresponding to 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 of SRS#1 Corresponding to antenna port Tx0, reference signal port of SRS#1 Corresponding to 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 the beam 2 of antenna port Tx0. Reference signal port of SRS#1 Corresponding to the beam 4 of antenna port Tx1. Reference signal port of SRS#1 Beam 6 corresponding to antenna port Tx2. Reference signal port for SRS#1 Corresponding to the beam 8 of the antenna port Tx3. It can be seen that the first corresponding relationship can be expressed as shown in Table 5:

[0257] Table 5

[0258]

[0259]

[0260] 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 Tx1 is used to send the reference signal port of SRS#0 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 used to send the reference signal port of SRS#0 through beam 7 of antenna port Tx3. 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 used to send the reference signal port of SRS#1 through beam 6 of antenna port Tx2. 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 .

[0261] The following describes the terminal equipment according to N R A process of sending a reference signal according to a reference signal resource and a second corresponding relationship.

[0262] 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.

[0263] In this implementation, the reference signal resources correspond to antenna ports, and the reference signal ports included in each reference signal resource correspond to the beams 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 resources and reference signal ports 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 according to the channel information of each beam corresponding to each antenna port.

[0264] In one possible implementation, N R Each of the reference signal resources 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 N antenna ports. R Each of the reference signal resources includes N P Reference signal ports and N R Each antenna port corresponds to NP The beams correspond one to one.

[0265] For example, Figure 6 As shown, 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: 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. The second corresponding relationship is introduced below in combination with Table 6 and Table 7. That is, the second corresponding relationship includes the corresponding relationship shown in Table 6 and the corresponding relationship shown in Table 7.

[0266] Table 6

[0267] Reference signal resources Antenna Port SRS#0 Antenna port Tx0 SRS#1 Antenna port Tx1 SRS#2 Antenna port Tx2 SRS#3 Antenna port Tx3

[0268] Table 7

[0269]

[0270]

[0271] 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.

[0272] 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 PThat 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 R The reference signal resource includes 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 the 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 the 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 the 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 the reference signal resource 2 is sent through the second beam corresponding to antenna port 2.

[0273] It should be noted that, optionally, the reference signal resource a refers to the reference signal resource with index a, or N R The ath reference signal resource among the reference signal resources. Optionally, the ath reference signal resource is the ath reference signal resource configured in a configuration order, or the ath reference signal resource sorted in an order of index size, which is not specifically limited in this application.

[0274] 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 the present application.

[0275] Optionally, beam b refers to the beam indexed by b, or 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.

[0276] Optionally, antenna port a refers to the antenna port indexed as a, or N included in the terminal device. R The ath antenna port among the antenna ports.

[0277] For example, Figure 6 As shown, 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: 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.

[0278] 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 of SRS#0 Corresponding to beam 1, reference signal port of SRS#0 Corresponding to beam 2. Reference signal port of SRS#1 Corresponding to beam 3, reference signal port of SRS#1 Corresponding to beam 4. Reference signal port of SRS#2 Corresponding to beam 5, reference signal port of SRS#2 Corresponding to beam 6. Reference signal port of SRS#3 Corresponding to beam 7, reference signal port of SRS#3 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, SRS#0 of antenna port Tx0 Corresponding to the beam 2 of antenna port Tx0. Reference signal port of SRS#1 Corresponding to the reference signal port of beam 3 of antenna port Tx1, SRS#1 Beam 4 of the corresponding antenna port Tx1. Reference signal port of SRS#2 Corresponding to the reference signal port of beam 5 of antenna port Tx2, SRS#2 Beam 6 corresponding to antenna port Tx2. Reference signal port of SRS#3 Corresponding to the reference signal port of beam 7 of antenna port Tx3, SRS#3 Corresponding to the beam 8 of the antenna port Tx3. It can be seen that the second corresponding relationship can be expressed as shown in Table 8:

[0279] Table 8

[0280]

[0281] 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 2 of antenna port Tx0. 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 .

[0282] Optionally, the first correspondence and the second correspondence may be specified in the 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 through RRC signaling.

[0283] Optionally, in an ORAN system, the above step 402 may be performed by an O-RU network element.

[0284] 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.

[0285] In the scenario of downlink transmission, the above step 402 can be replaced by: the network device receives the N R The 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.

[0286] The first correspondence includes N RThe corresponding relationship between the reference signal resource and the beam corresponding to each antenna port of the network device, and the corresponding relationship between the one or more reference signal ports included in each reference signal resource and the one or more antenna ports of the network device. It can be seen that the first corresponding relationship is similar to the first corresponding relationship in the aforementioned step 402, and the details can be referred to the aforementioned related introduction.

[0287] The second correspondence 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. It can be seen that the second corresponding relationship is similar to the second corresponding relationship in the aforementioned step 402, and the details can be referred to the aforementioned related introduction.

[0288] Optional, Figure 4 The illustrated embodiment further includes step 403. Step 403 may be performed after step 402.

[0289] 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.

[0290] Optionally, the first information, the second information, or the third information may be carried by DCI signaling, or by 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 signalings.

[0291] The first information indicates the antenna port used for uplink transmission. Figure 5 As shown, 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. Thereby, flexible selection of suitable antenna ports for uplink transmission is achieved, which is conducive to improving uplink transmission performance.

[0292] In one possible implementation, the first information includes a first bit map, the bits in the first bit map correspond to 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.

[0293] 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. 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 indicate that the terminal device uses 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 indicate that the terminal device does not 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 indicate that the terminal device does not 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 indicate that the terminal device uses the antenna port corresponding to the bit for uplink transmission. For example, Figure 5 As shown, the terminal device includes four antenna ports, namely antenna port Tx0 to antenna port Tx3. Therefore, the first bitmap includes four bits, the first bit of the four bits 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, if the value of the first bitmap is 1100, it can be known that the network device instructs the terminal device to use antenna port Tx0 and antenna port Tx1 for uplink transmission.

[0294] In another possible implementation manner, the first information includes a first field, a value of the first field is used to indicate a second antenna port combination among the one or more second antenna port combinations, and an antenna port included in the second antenna port combination is used for uplink transmission.

[0295] 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.

[0296] In a possible implementation, the one or more second antenna port combinations are antenna port combinations including antenna ports whose number does not exceed X. Figure 5As shown, the terminal device includes four antenna ports, X is 2, and therefore 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:

[0297] Table 9

[0298] First Field Second antenna port combination 000 Second antenna port combination 1 001 Second antenna port combination 2 010 Second antenna port combination 3 011 Second antenna port combination 4 100 Second antenna port combination 5 101 Second antenna port combination 6

[0299] 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.

[0300] In another possible implementation, the one or more second antenna port combinations are antenna port combinations for simultaneous transmission supported by the terminal device. Information about the antenna port combinations for simultaneous transmission supported by the terminal device may be reported by the terminal device to the network device. Figure 5 As shown, 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 second antenna port combination 1 and second antenna port combination 2. Second antenna port combination 1 includes antenna port Tx0 and antenna port Tx1. 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:

[0301] Table 10

[0302] First Field Second antenna port combination 0 Second antenna port combination 1 1 Second antenna port combination 2

[0303] 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.

[0304] The second information indicates the beams used by each antenna port for uplink transmission. Figure 5 As shown, the terminal device includes four antenna ports, and each antenna port corresponds to two beams. The network device measures the reference signal from the terminal device to obtain the channel information of each beam corresponding to each antenna port, and determines the channel quality of each beam corresponding to each antenna port according to the channel information of each beam corresponding to each antenna port. The network device can select the corresponding antenna port and one or more beams corresponding to the antenna port from each beam corresponding to each antenna port. Then, the network device indicates the beams adopted by each selected antenna port to the terminal device through 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 of antenna port Tx0 and beam 3 of antenna port Tx1. It can be seen that the network device can indicate the beams adopted by each antenna port used for uplink transmission to the terminal device. Thereby selecting a suitable beam for uplink transmission for the terminal device. It is conducive to improving uplink transmission performance and efficiency.

[0305] 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. Refer to log 2 M is rounded up.

[0306] For example, Figure 5As shown, the terminal device includes four antenna ports, and each antenna port corresponds to two beams. Therefore, the second field includes four groups of bits, and each group of bits in the four groups 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 adopted; 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 adopted. 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 adopts 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 adopted. The value of the second group of bits is 0, indicating that beam 3 of antenna port Tx1 is adopted. The third group of bits and the fourth group of bits are reserved and do not indicate any information.

[0307] It can be seen that the terminal device can know from 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 without any indication. Figure 5 As shown, 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 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.

[0308] 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 the above 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 without any indication. L is an integer greater than or equal to 1 and less than or equal to N.

[0309] 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. Refer to log 2 M is rounded up.

[0310] In another 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, the qth group of bits is used to indicate the beam used by the qth antenna port for uplink transmission among the 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. Optionally, the qth antenna port for uplink transmission is the qth antenna port among the one or more antenna ports 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.

[0311] For example, Figure 5 As shown, 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. In 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.

[0312] 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. Thus, the network device selects a suitable codebook for the terminal device in combination with the channel quality of each beam of each antenna port. It is possible to select 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. Thereby reducing the complexity and delay of the process, thereby improving the uplink transmission efficiency.

[0313] Optionally, the third information indicates one or more codebooks selected from the first codebook set. The first codebook set is determined according to the number of antenna ports indicated by the first information and a first parameter, the first parameter including one or more of the following: a state in which a transform precoder is configured, a maximum number of ranks used 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; the state in which the transform precoder is configured is disabled or enabled.

[0314] Correspondingly, the terminal device determines the number of antenna ports indicated by the network device according to the first information. Then, the terminal device determines the first codebook set according to the number of antenna ports. Optionally, the terminal device selects the first codebook set according to 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.

[0315] Optionally, the uplink transmission includes at least one of the following: PUSCH transmission, PUCCH transmission, or SRS transmission.

[0316] 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.

[0317] 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 make any specific limitation.

[0318] Optionally, in an ORAN system, the above step 403 may be performed by an O-RU network element.

[0319] 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.

[0320] In the scenario of downlink transmission, the above step 403 can be replaced by: the terminal device sends at least one of the following to the network device: first information, second information, or third information. Correspondingly, the network device receives at least one of the following from the terminal device: first information, second information, or third information.

[0321] 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, and the details can refer to the relevant introduction of the aforementioned first information.

[0322] 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, and the details can be referred to the relevant introduction of the aforementioned second information.

[0323] The third information indicates a codebook for downlink transmission. It can be seen that the third information is similar to the third information in the aforementioned step 403, and the relevant introduction of the aforementioned third information can be referred to for details.

[0324] In the scenario of downlink transmission, the uplink transmission in the above step 403 is replaced by downlink transmission.

[0325] Optionally, the downlink transmission includes at least one of the following: PDSCH transmission, PDCCH transmission, or CSI-RS transmission.

[0326] Optional, Figure 4 The illustrated embodiment further includes step 404. Step 404 may be performed after step 403.

[0327] 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.

[0328] 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.

[0329] Optionally, in an ORAN system, the above step 404 may be performed by an O-RU network element.

[0330] 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.

[0331] In the downlink transmission scenario, the above step 404 can be replaced by a 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 codebook indicated by the third information.

[0332] 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.

[0333] In the embodiment of the present application, the terminal device R The 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 The first corresponding relationship includes N R The second correspondence includes N R The correspondence between a 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 easy for the network device to determine the channel quality of each beam corresponding to each antenna port by measuring the reference signal, and 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 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 uplink transmission efficiency.

[0334] The communication device provided in the embodiment of the present application is described below.

[0335] Figure 7 This is a schematic diagram of the structure of the communication device of the embodiment of the present application. Figure 7 , the communication device can be used to perform Figure 4 For details of the process executed by the terminal device in the embodiment shown, please refer to the relevant introduction in the above method embodiment.

[0336] The communication device 700 includes a transceiver module 701. Optionally, the communication device 700 also includes a processing module 702.

[0337] The processing module 702 is used for data processing. The transceiver module 701 can realize the corresponding communication function. The transceiver module 701 can also be called a communication interface or a communication module.

[0338] 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.

[0339] The communication device module 700 can be used to perform the actions performed by the terminal device in the above method embodiment. 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 embodiment. The transceiver module 701 is used to perform the reception-related operations on the terminal device side in the above method embodiment.

[0340] 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.

[0341] 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. Specifically, it may depend on whether the above solution executed by the communication device 700 includes a sending action and a receiving action.

[0342] Optionally, the communication device 700 is used to perform the above Figure 4 Actions performed by the terminal device in the illustrated embodiment.

[0343] For example, the communication device 700 is used to execute the above Figure 4 The actions performed by the terminal device in the embodiment shown. The communication device 700 performs the following scheme:

[0344] The transceiver module 701 is used to R The reference signal resources and the first corresponding relationship are used to send a reference signal to the network device, or, according to N R reference signal resources and a second corresponding relationship to send a reference signal to the network device; wherein N R is 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 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.

[0345] For another example, the communication device 700 executes the following scheme:

[0346] The transceiver module 701 is used to receive first configuration information from a 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 of the reference signal resources includes one or more reference signal ports, N RThe 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.

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

[0349] Figure 8 This is a schematic diagram of the structure of the communication device of the embodiment of the present application. Figure 8 , the communication device can be used to perform Figure 4 For details of the process executed by the network device in the illustrated embodiment, please refer to the relevant introduction in the above method embodiment.

[0350] The communication device 800 includes a transceiver module 801. Optionally, the communication device 800 also includes a processing module 802.

[0351] 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.

[0352] 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.

[0353] The communication device module 800 can be used to perform the actions performed by the network device in the above method embodiment. 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 in the above method embodiment, and the processing module 802 is used to perform the processing-related operations on the network device side in the above method embodiment.

[0354] 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.

[0355] 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. Specifically, it may depend on whether the above solution executed by the communication device 800 includes a sending action and a receiving action.

[0356] Optionally, the communication device 800 is used to perform the above Figure 4 Actions performed by the network device in the illustrated embodiment.

[0357] For example, the communication device 800 is used to execute the above Figure 4 The actions performed by the network device in the embodiment shown. The communication device 800 performs the following scheme:

[0358] 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 The reference signal resources and the first corresponding relationship are sent, or the terminal device sends the reference signal resources according to N R Reference signal resources and the second corresponding relationship are sent; N R Each of 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.

[0359] For another example, the communication device 800 executes the following scheme:

[0360] The transceiver module 801 is used to send 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 of the reference signal resources includes one or more reference signal ports, N RThe 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 A reference signal resource corresponds to one or more antenna ports of the terminal device, and one or more reference signal ports included in each reference signal resource correspond to a beam corresponding to each antenna port of the terminal device; N R is an integer greater than or equal to 1.

[0361] 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.

[0362] The processing module 802 in the above embodiment can be implemented by at least one processor or processor-related circuit. The transceiver module 801 can be implemented by a transceiver or a transceiver-related circuit. The transceiver module 801 can also be called a communication module or a communication interface. The storage module can be implemented by at least one memory.

[0363] The embodiment of the present application also provides a communication device 900. The communication device 900 includes a processor 910, the processor 910 is coupled to a memory 920, the memory 920 is used to store computer programs or instructions and / or data, and 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.

[0364] Optionally, the communication device 900 includes one or more processors 910.

[0365] Optional, such as Fig. 9 As shown, the communication device 900 may further include a memory 920 .

[0366] Optionally, the communication device 900 may include one or more memories 920 .

[0367] Optionally, the memory 920 may be integrated with the processor 910 or provided separately.

[0368] Optional, such as Fig. 9 As shown, the communication device 900 may further include a transceiver 930, and the transceiver 930 is used for receiving and / or sending signals. For example, the processor 910 is used to control the transceiver 930 to receive and / or send signals.

[0369] As a solution, the communication device 900 is used to implement the operations performed by the terminal device in the above method embodiment.

[0370] 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.

[0371] As another solution, the communication device 900 is used to implement the operations performed by the network device in the above method embodiment.

[0372] 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.

[0373] The present application also 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.

[0374] When the communication device 1000 is a terminal device, Fig.10 FIG. 1 shows a simplified schematic diagram of the structure of a terminal device. Fig.10 As shown, the terminal device includes a processor, a memory, and a transceiver.

[0375] 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).

[0376] The processor is mainly used to process communication protocols and communication data, as well as to control terminal devices, execute software programs, process software program data, etc. The memory is mainly used to store software programs and data. The radio frequency circuit is mainly used for converting baseband signals and radio frequency signals and processing radio frequency signals. The antenna is mainly used to send and receive radio frequency signals in the form of electromagnetic waves. Input and output devices. For example, touch screens, display screens, keyboards, etc. are mainly used to receive data input by users and output data to users. It should be noted that some types of terminal devices may not have input and output devices.

[0377] When data needs to be sent, the processor performs baseband processing on the data to be sent and 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, Fig.10Only one memory, processor and transceiver are shown. 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. The memory may be set independently of the processor or integrated with the processor, and the embodiments of the present application do not limit this.

[0378] In the embodiment of the present application, the antenna and the 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.

[0379] like Fig.10 As shown, 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.

[0380] Optionally, the device for implementing the receiving function in the transceiver 1030 may be regarded as a receiving module, and the device for implementing the sending function in the transceiver 1030 may be regarded as a sending module, that is, the transceiver 1030 includes a receiver and a transmitter. A transceiver may sometimes be referred to as a transceiver, a transceiver module, or a transceiver circuit, etc. A receiver may sometimes be referred to as a receiver, a receiving module, or a receiving circuit, etc. A transmitter may sometimes be referred to as a transmitter, a transmitting module, or a transmitting circuit, etc.

[0381] Processor 1001 is used to execute the above Figure 4 In the embodiment shown, the processing action on the terminal device side is performed by the transceiver 1030. Figure 4 In the embodiment shown, the transceiver 1030 is used to perform the transceiver operation on the terminal device side. Figure 4 Step 401 to step 402 in the embodiment shown. Optionally, the transceiver 1030 is also used to perform Figure 4 Step 401a, step 403 and step 404 in the illustrated embodiment.

[0382] It should be understood that Fig.10 This is only an example and not a limitation. The terminal device including the transceiver module and the processing module may not rely on Figure 7 or Fig.10 The structure shown.

[0383] When the communication device 1000 is a chip, the chip includes a processor, a memory and a transceiver. The transceiver may be an input / output circuit or a communication interface; the processor may be a processing module or a microprocessor or an integrated circuit integrated on the chip. The sending operation of the terminal device in the above method embodiment may be understood as the output of the chip, and the receiving operation of the terminal device in the above method embodiment may be understood as the input of the chip.

[0384] The present application also provides a communication device 1100, which can be a network device or a chip. The communication device 1100 can be used to perform the above Figure 4 The operations performed by the network devices in the illustrated embodiment.

[0385] When the communication device 1100 is a network device, for example, it is a base station. Fig.11 A simplified schematic diagram of the base station structure is shown. 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 be usually 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 to baseband signals; part 1130 can usually be called a transceiver module, a transceiver, a transceiver circuit, or a transceiver. 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 used to implement the receiving function in part 1130 can be regarded as a receiver, and the device used to implement the sending function can be regarded as a transmitter, that is, part 1130 includes a receiver 1132 and a transmitter 1131. A receiver may also be called a receiving module, a receiver, or a receiving circuit, etc., and a transmitter may be called a transmitting module, a transmitter, or a transmitting circuit, etc.

[0386] Part 1110 and part 1120 may include one or more single boards, each of which may include one or more processors and one or more memories. The processor is used to read and execute the program in the memory to realize the baseband processing function and the control of the base station. If there are multiple single boards, each single board can be interconnected to enhance the processing capability. As an optional implementation, multiple single boards may share one or more processors, or multiple single boards may share one or more memories, or multiple single boards may share one or more processors at the same time.

[0387] For example, the transceiver module of part 1130 is used to perform Figure 4In the embodiment shown, the network device performs the sending and receiving related processes. The processor in part 1110 is used to perform Figure 4 The illustrated embodiment is a process related to processing performed by a network device.

[0388] It should be understood that Fig.11 This is only an example and not a limitation. The network device including the processor, memory and transceiver may not rely on Figure 8 or Fig.11 The structure shown.

[0389] When the communication device 1100 is a chip, the chip includes a transceiver, a memory and a processor. The transceiver may be an input / output circuit or a communication interface; the processor may be a processor, a microprocessor or an integrated circuit integrated on the chip. The sending operation of the network device in the above method embodiment may be understood as the output of the chip, and the receiving operation of the network device in the above method embodiment may be understood as the input of the chip.

[0390] An embodiment of the present application also provides a computer-readable storage medium on which are stored computer instructions for implementing the method executed by a terminal device or a network device in the above method embodiment.

[0391] 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.

[0392] 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 a terminal device or a network device in the above method embodiment.

[0393] 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.

[0394] The present application also 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 above Figure 4 The illustrated embodiments provide methods.

[0395] In a possible implementation, the input of the chip device corresponds to the above Figure 4 In the receiving operation of the embodiment shown, the output of the chip device corresponds to the above Figure 4 The sending operation in the embodiment shown.

[0396] Optionally, the processor is coupled to the memory via an interface.

[0397] Optionally, the chip device further comprises a memory, in which computer programs or computer instructions are stored.

[0398] 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 processors for controlling the above Figure 4 The embodiment shown provides an integrated circuit for executing the program of the method. The memory mentioned in any of the above places can be a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, a random access memory (RAM), etc.

[0399] Those skilled in the art can clearly understand that, for the sake of convenience and brevity of description, the explanation of the relevant contents and beneficial effects in any of the communication devices provided above can refer to the corresponding method embodiments provided above, and will not be repeated here.

[0400] In the several embodiments provided in the present 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 only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, 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.

[0401] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0402] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0403] 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 a computer device (which can be a personal computer, a server, or a network device, etc.) to perform 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 USB flash drives, mobile hard drives, ROM, RAM, magnetic disks, or optical disks.

[0404] 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 aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned 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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