Beam Usage Method and Related Device

Abstract

An embodiment of the present application discloses a beam usage method, including: a first communication device determines a first beam and a second beam, and the first beam and the second beam are the same type of beam. The first communication device determines a beam used for a first control resource set according to a first rule, and the beam used for the first control resource set is the first beam and / or the second beam. In this way, the first communication device correctly applies the beam instructed by the network device to the channel corresponding to the control resource set, so that the channel corresponding to the control resource set is transmitted through the correct beam, thereby improving communication transmission performance.

Description

Technical Field

[0001] This application claims the priority of Chinese Patent Application No. 202111277512.9, titled "BEAM USAGE METHOD AND RELATED APPARATUS", filed on October 29, 2021, and Chinese Patent Application No. 202210963817.3, titled "BEAM USAGE METHOD AND RELATED APPARATUS", filed on August 11, 2022, which are hereby incorporated by reference in their entirety.

[0002] This application relates to the field of communication technologies, and particularly to a beam usage method and related apparatus.

Background Art

[0003] In the fifth (5 G) mobile communication system, high-frequency communication can be used, that is, data is transmitted using ultra-high bandwidth (>6 GHz) signals. The main problem of high-frequency communication is that as the transmission distance increases, the energy of the signal rapidly decreases, and as a result, the transmission distance of the signal becomes short. To solve this problem, analog beamforming technology is used in high-frequency communication. Weighting processing is performed on the antenna array to concentrate the signal energy in a small angular range and form a signal similar to an optical beam (analog beam, abbreviated as beam) to extend the transmission distance.

[0004] Transmission is performed between a network device and a terminal device via a beam. The network device can instruct the terminal device with multiple beams of the same type, for example, multiple uplink common beams, multiple downlink common beams, or multiple uplink and downlink common beams. However, how to correctly apply the beam instructed by the network device to the corresponding channel is an issue that needs to be urgently solved.

Summary of the Invention

[0005] This application provides a beam usage method and related apparatus such that a first communication device determines a beam to be used for a first control resource set according to a first rule. In this way, the first communication device correctly applies the beam instructed by the network device to the channel corresponding to the control resource set so that the channel corresponding to the control resource set is transmitted via the correct beam, thereby improving the communication transmission performance.

[0006] The first aspect of this application is that the first communication device determines a first beam and a second beam, where the first beam and the second beam are of the same type of beam, and then the first communication device determines a beam to be used for a first control resource set according to a first rule, where the beam to be used for the first control resource set is the first beam and / or the second beam and provides a beam usage method including this.

[0007] In the above technical solution, the first communication device determines the first beam and the second beam, and the first beam and the second beam are of the same type of beam. For example, the first beam and the second beam are common beams of the same type. For example, the first beam and the second beam are two downlink common beams or two uplink and downlink common beams. The first communication device can determine the beam to be used for the first control resource set from the first beam and the second beam according to the first rule. In this way, the first communication device correctly applies the beam instructed by the network device to the channel corresponding to the control resource set so that the channel corresponding to the control resource set is transmitted via the correct beam, and the communication transmission performance can be improved. For example, in a multi-site transmission scenario, the first communication device, according to the technical solution of this application, uses the first beam and the second beam for the corresponding physical downlink control channel to perform multi-site transmission(P determine to correctly apply to the DCCH).

[0008] In a possible implementation, when the network device configures two control resource set groups for the terminal device and each control resource set group includes at least one control resource set, it is possible for the first communication device to determine the beam used for the first control resource set according to the first rule. When the first control resource set belongs to the first control resource set group within the two control resource set groups, the first communication device determines that the beam used for the first control resource set is the first beam, or when the first control resource set belongs to the second control resource set group within the two control resource set groups, the first communication device determines that the beam used for the first control resource set is the second beam. including The first control resource set group is the control resource set group with a smaller group index among the two control resource set groups, the second control resource set group is the control resource set group with a larger group index among the two control resource set groups, or the first control resource set group is the control resource set group with a larger group index among the two control resource set groups, and the second control resource set group is the control resource set group with a smaller group index among the two control resource set groups.

[0009] In the foregoing implementation form, when the network device configures two control resource set groups for the terminal device, a specific method for the first communication device to determine the beam used for the first control resource set is provided. As a result, the first communication device transmits the PDCCH corresponding to the first control resource set via the correct beam. For example, in a multi-site transmission scenario, the two control resource set groups respectively correspond to two sites. According to the technical solution of this application, the first communication device can determine the corresponding beam used for the control resource sets belonging to the two control resource set groups for implementing multi-site transmission.

[0010] In another possible implementation form, when the network device configures two control resource sets for the terminal device and the two control resource sets are used for repeated transmission of the control channel, for the first communication device to determine the beam used for the first control resource set according to the first rule, when the first control resource set is the control resource set with a smaller index among the two control resource sets, for the first communication device to determine that the beam used for the first control resource set is the first beam, or when the first control resource set is the control resource set with a larger index among the two control resource sets, for the first communication device to determine that the beam used for the first control resource set is the second beam, or when the first control resource set is the control resource set with a higher configuration ranking among the two control resource sets, for the first communication device to determine that the beam used for the first control resource set is the first beam, or when the first control resource set is the control resource set with a lower configuration ranking among the two control resource sets, for the first communication device to determine that the beam used for the first control resource set is the second beam is included.

[0011] In the foregoing implementation form, when the network device configures two control resource sets for the terminal device and the two control resource sets are used for repeated transmission of the control channel, a specific method for the first communication device to determine the beam used for the first control resource set is provided. As a result, the first communication device transmits the PDCCH corresponding to the first control resource set via the correct beam. For example, in a multi-site transmission scenario, the two control resource sets respectively correspond to two sites. According to the technical solution of the present application, the first communication device can determine the beams respectively used for the two control resource sets to implement multi-site transmission.

[0012] In another possible implementation form, when the network device configures two control resource sets for the terminal device and the two control resource sets are used for repeated transmission of the control channel, for the first communication device to determine the beam used for the first control resource set according to the first rule, when the first control resource set is the control resource set with a larger index among the two control resource sets, for the first communication device to determine that the beam used for the first control resource set is the first beam, or when the first control resource set is the control resource set with a smaller index among the two control resource sets, for the first communication device to determine that the beam used for the first control resource set is the second beam, or when the first control resource set is the control resource set with a lower configuration ranking among the two control resource sets, for the first communication device to determine that the beam used for the first control resource set is the first beam, or when the first control resource set is the control resource set with a higher configuration ranking among the two control resource sets, for the first communication device to determine that the beam used for the first control resource set is the second beam is included.

[0013] In the foregoing implementation form, for the terminal device, the network device configures two control resource sets. When the two control resource sets are used for repeated transmission of the control channel, another specific method for the first communication device to determine the beam used for the first control resource set is provided. As a result, the first communication device transmits the PDCCH corresponding to the first control resource set via the correct beam. For example, in a multi-site transmission scenario, the two control resource sets respectively correspond to two sites. According to the technical solution of the present application, for implementing multi-site transmission, the first communication device can determine the beams respectively used for the two control resource sets.

[0014] In another possible implementation form, the fact that two control resource sets are used for repeated transmission of the control channel is subject to the following conditions, The network device configures two control resource set groups for the terminal device, and the two control resource sets belong to different control resource set groups, The network device configures two control resource set groups for the terminal device. The index of the control resource set in the first control resource set group within the two control resource set groups is smaller than the index of the control resource set in the second control resource set group within the two control resource set groups, or the configuration ranking of the control resource set in the first control resource set group is before the configuration ranking of the control resource set in the second control resource set group. The first control resource set group is the control resource set group with a smaller group index among the two control resource set groups, and the second control resource set group is the control resource set group with a larger group index among the two control resource set groups, or The network device configures two control resource set groups for the terminal device. The index of the control resource set in the first control resource set group within the two control resource set groups is greater than the index of the control resource set in the second control resource set group within the two control resource set groups, or the configuration ranking of the control resource set in the first control resource set group is later than the configuration ranking of the control resource set in the second control resource set group within the two control resource set groups. The first control resource set group is the control resource set group with a smaller group index among the two control resource set groups, and the second control resource set group is the control resource set group with a larger group index among the two control resource set groups, or The network device configures only one control resource set group for the terminal device, and the two control resource sets belong to the control resource set group. satisfies any one of the following.

[0015] In the foregoing implementation form, specific examples of some conditions satisfied when two control resource sets are used for repeated transmission of the control channel are that the first communication device correctly determines the beams used for the two control resource sets and improves the communication transmission performance. For example, in a multi-site transmission scenario, the first communication device can determine the beams used for the two control resource sets according to the technical solution of this application to implement multi-site transmission.

[0016] In another possible implementation form, when the network device configures one control resource set group for the terminal device, the control resource set group includes one or more single-beam control resource sets, and the first control resource set belongs to one of the one or more single-beam control resource sets, it is The first communication device determines that the beam used for the first control resource set is the first beam. The first communication device determines that the beam used for the first control resource set is the second beam, or If the beam currently used for the first control resource set and the first beam belong to the same beam set, the first communication device determines to update the beam currently used for the first control resource set to the first beam, or if the beam currently used for the first control resource set and the second beam belong to the same beam set, the first communication device determines to update the beam currently used for the first control resource set to the second beam includes.

[0017] In the foregoing implementation, the network device configures a control resource set group for the terminal device, and when the first control resource set is a single-beam Control resource set, a specific determination method for the first communication device to determine the beam used for the first control resource set is provided. In this way, the first communication device correctly determines the beam used for the first control resource set in order to select an appropriate beam for transmitting the PDCCH corresponding to the first control resource set to improve the communication transmission performance. For example, the beams used by different sites are composed of different beam sets. In other words, the beams within the same beam set are the beams used by the same site. When the beam currently used for the first control resource set and the first beam belong to the same beam set, the same site is preferably used to transmit the PDCCH corresponding to the first control resource set. Therefore, the beam currently used for the first control resource set is updated to the first beam. The same explanation applies to the second beam. Details are not provided one by one again in this specification.

[0018] In another possible implementation, the first control resource set is not used for repeated transmission of the control channel.

[0019] In the foregoing implementation, the first control resource set and another control resource set are not used for repeated transmission of the control channel. In this way, the first communication device refers to the first rule to select an appropriate beam for transmitting the PDCCH corresponding to the first control resource set in order to improve the communication transmission performance, thereby determining the beam used for the first control resource set.

[0020] In another possible implementation, when a network device configures one control resource set group for a terminal device, the control resource set group includes one or more multi-beam control resource sets, and the first control resource set belongs to one of the one or more multi-beam control resource sets, the first communication device determines the beam used for the first control resource set according to the first rule, which includes the first communication device determining that the beams used for the first control resource set are the first beam and the second beam.

[0021] In this implementation, when a network device configures a control resource set group for a terminal device and the first control resource set belongs to one of the control resource set groups, the first beam and the second beam can be directly used for the first control resource set group. For example, the first beam and the second beam are the beams used by two sites. The terminal device and the two sites transmit the PDCCH corresponding to the first control resource set via the corresponding beams to implement multi-site transmission.

[0022] In another possible implementation, the method includes the first communication device receiving a first media access control control element from the second communication device (Mfurther comprising receiving a first MAC CE), wherein the first MAC CE includes an index of a first control resource set. The first communication device determines a beam to be used for the first control resource set according to a first rule, wherein the first MAC CE is a first type of MAC CE, the first MAC CE includes first beam indication information, and when the first beam indication information indicates a first beam, the first communication device determines that, at any moment within a first period, the first common beam within two common beams of the same type that become valid at any moment is used for the first control resource set. The first period is a time interval from the time when the beam indicated by the first MAC CE becomes valid to the time when the beam indicated by a second MAC CE becomes valid. The second MAC CE indicates the beam used by the first control resource set and is the most recently received MAC CE by the first communication device after the first MAC CE is received; wherein the first MAC CE is a first type of MAC CE, the first MAC CE includes first beam indication information, and when the first beam indication information indicates a second beam, the first communication device determines that, at any moment within a first period, the second common beam within two common beams of the same type that become valid at any moment is used for the first control resource set; or wherein the first MAC CE is a second type of MAC CE, the first MAC CE includes second beam indication information and third beam indication information, the second beam indication information indicates a first beam, the third beam indication information indicates a second beam, and the first communication device determines that, at any moment within a first period, two common beams of the same type that become valid at any moment are used for the first control resource set.

[0023] In this implementation form, the first communication device can determine the beam used for the first control resource set by referring to the received first MAC CE. In this way, the first communication device correctly determines the beam used for the first control resource set in order to select an appropriate beam for transmitting the PDCCH corresponding to the first control resource set in order to improve the communication transmission performance.

[0024] In another possible implementation form, the method is that the first communication device determines the type of the first control resource set, and the determination further includes that the type of the first control resource set includes a single-beam control resource set or a multi-beam control resource set.

[0025] In this implementation form, the first communication device can first determine the type of the first control resource set, and then correctly determine the beam used for the first control resource set by referring to the type of the first control resource set.

[0026] In another possible implementation form, for the first communication device to determine the type of the first control resource set, the first communication device determines the type of the first control resource set based on the configuration parameters within the first control resource set, the first communication device receives first indication information from the second communication device, where the first indication information indicates whether a plurality of beams are permitted to be used for the first control resource set, or the first indication information indicates the type of the first control resource set, and the first communication device is a terminal device and the second communication device is a network device, the receiving the first communication device determines the type of the first control resource set based on the amount of beams currently used for the first control resource set, The first communication device receives a third MAC CE from the second communication device, where the third MAC CE indicates the type of the first control resource set, or the third MAC CE indicates the number of beams used for the first control resource set, and the number of beams includes 1 or 2, or the third MAC CE indicates the beams used for the first control resource set, and the beams used for the first control resource set include the first beam and / or the second beam, to receive or The first communication device receives a first MAC CE from the second communication device, and the first communication device determines the type of the first control resource set based on the type of the first MAC CE. including.

[0027] In the foregoing implementation, several possible implementations for the first communication device to determine the type of the first control resource set are shown to facilitate the implementation of the solution. For example, the first communication device can determine the type of the first control resource set using the configuration parameters within the first control resource set. This method is simple and easy to implement. Alternatively, the first communication device determines the type of the first control resource set by receiving first indication information from the second communication device. Alternatively, the first communication device indirectly determines the type of the first control resource set using the number of beams currently used for the first control resource set.

[0028] In another possible implementation, for the first communication device to determine the type of the first control resource set based on the type of the first MAC CE, when the first MAC CE is a first type of MAC CE, the first communication device determines that the first control resource set is a single-beam control resource set, or when the first MAC CE is a second type of MAC CE, the first communication device determines that the first control resource set is a multi-beam control resource set It includes. Optionally, the first type of MAC CE is a MAC CE that indicates a single beam, and the second type of MAC CE is a MAC CE that indicates multiple beams.

[0029] In the above implementation, for the ease of implementing the solution, a specific process is shown in which the first communication device determines the type of the first control resource set based on the type of the first MAC CE.

[0030] In another possible implementation, the first communication device may determine the type of the first control resource set based on the amount of beams currently used in the first control resource set. When the number of beams currently used in the first control resource set is 1, the first communication device determines that the type of the first control resource set is a single-beam control resource set, or When the number of beams currently used in the first control resource set is greater than 1, the first communication device determines that the type of the first control resource set is a multi-beam control resource set. It includes.

[0031] In the above implementation, for the ease of implementing the solution, a specific process is shown in which the first communication device refers to the number of beams currently used in the first control resource set to determine the type of the first control resource set.

[0032] In another possible implementation, the number of beams currently used in the single-beam Control resource set is 1, and the number of beams currently used in the multi-beam Control resource set is greater than 1.

[0033] In the foregoing implementation forms, several possible ways to distinguish between a first beam and a second beam are shown so that the first communication device can distinguish between two beams of the same type indicated by the network device. For example, in a multi-site transmission scenario, the first beam and the second beam may be beams used by two different sites. Specifically, the first beam and the second beam may be indicated by any one of the above methods.

[0034] In another possible implementation form, the first communication device includes a network device or a terminal device.

[0035] In another possible implementation form, the determination by the first communication device of the first beam and the second beam is the reception by the first communication device of second indication information from the second communication device, where the second indication information indicates the first beam and the second beam, the first communication device is a terminal device, and the second communication device is a network device. In this implementation form, the first communication device can determine the first beam and the second beam using the second indication information from the second communication device.

[0036] The second aspect of the present application is the determination by the first communication device of the first beam and the second beam, where the first beam and the second beam are beams of the same type, and the determination by the first communication device, in accordance with a first rule, of the beam used for the first physical uplink control channel (P (PUCCH), where the beam used for the first PUCCH is the first beam and / or the second beam. This includes a method for using beams.

[0037] In the foregoing technical solution, the first communication device determines a first beam and a second beam, and the first beam and the second beam are beams of the same type. For example, the first beam and the second beam are common beams of the same type. For example, the first beam and the second beam are two uplink common beams or two uplink and downlink common beams. The first communication device can determine the beam used for the first PUCCH from the first beam and the second beam according to the first rule. In this way, the first communication device can correctly apply the beam instructed by the network device to the first PUCCH in order to transmit the first PUCCH via the correct beam to improve the communication transmission performance. For example, in a multi-site transmission scenario, the first communication device determines to correctly apply the first beam and the second beam to the corresponding PUCCH in order to implement multi-site transmission according to the technical solution of the present application.

[0038] In a possible implementation, when the first PUCCH is a single-beam PUCCH, for the first communication device to determine the beam used for the first PUCCH according to the first rule is the first communication device determines that the beam used for the first PUCCH is the first beam, the first communication device determines that the beam used for the first PUCCH is the second beam, or when the beam currently used for the first PUCCH and the first beam belong to the same beam set, the first communication device determines to update the beam currently used for the first PUCCH to the first beam, or when the beam currently used for the first PUCCH and the second beam belong to the same beam set, the first communication device determines to update the beam currently used for the first PUCCH to the second beam including.

[0039] In the foregoing implementation manner, when the first PUCCH is a single-beam PUCCH, a specific determination method for the first communication device to determine the beam used for the first PUCCH is provided. In this way, the first communication device can correctly determine the beam used for the first PUCCH in order to select an appropriate beam for transmitting the first PUCCH to improve the communication transmission performance. For example, the beams used by different sites are composed of different beam sets. In other words, the beams within the same beam set are the beams used by the same site. When the beam currently used for the first PUCCH and the first beam belong to the same beam set, the same site is preferably used to transmit the first PUCCH. Therefore, the beam currently used for the first PUCCH is updated to the first beam. The description of the second beam is the same and will not be provided in detail again in this specification.

[0040] In another possible implementation manner, when the first PUCCH is a multi-beam PUCCH, the first communication device determining the beam used for the first PUCCH according to the first rule includes the first communication device determining that the beams used for the first PUCCH are the first beam and the second beam.

[0041] In this implementation manner, when the first PUCCH is a multi-beam PUCCH, the first beam and the second beam can be directly used for the first PUCCH. For example, the first beam and the second beam are the beams used by two sites. The terminal device and the two sites transmit the first PUCCH via the corresponding beams to implement multi-site transmission.

[0042] In another possible implementation manner, the method further includes the first communication device receiving a fourth MAC CE from the second communication device, where the fourth MAC CE includes the index of the first PUCCH. The first communication device determining the beam used for the first PUCCH according to the first rule is The fourth MAC CE is a first type of MAC CE. When the fourth MAC CE includes fourth beam indication information and the fourth beam indication information indicates a first beam, the first communication device determines, at any moment within a second period, that the first common beam within two common beams of the same type that become effective at any moment is used for the first PUCCH. The second period is a time interval from the effective time of the beam, that is, the beam indicated by the fourth MAC CE, to the effective time of the beam indicated by the fifth MAC CE. The fifth MAC CE indicates the beam used for the first PUCCH and is the MAC CE most recently received by the first communication device after the fourth MAC CE is received. The fourth MAC CE is a first type of MAC CE. When the fourth MAC CE includes fourth beam indication information and the fourth beam indication information indicates a second beam, the first communication device determines, at any moment within a second period, that the second common beam within two common beams of the same type that become effective at any moment is used for the first PUCCH, or The fourth MAC CE is a second type of MAC CE. When the fourth MAC CE includes fifth beam indication information and sixth beam indication information, the fifth beam indication information indicates a first beam, and the sixth beam indication information indicates a second beam, the first communication device determines, at any moment within a second period, that two common beams of the same type that become effective at any moment are used for the first PUCCH including.

[0043] In the foregoing implementation, a specific determination method is provided for the first communication device to determine the beam used for the first PUCCH with reference to the fourth MAC CE. In this way, the first communication device can correctly determine the beam used for the first PUCCH in order to select an appropriate beam for transmitting the first PUCCH to improve the communication transmission performance.

[0044] In another possible implementation, before the first communication device determines the beam used for the first PUCCH according to the first rule, the method is for the first communication device to determine the type of the first PUCCH, where the type of the first PUCCH includes a single-beam PUCCH or a multi-beam PUCCH, the number of beams used for the single-beam PUCCH is 1, and the number of beams used for the multi-beam PUCCH is greater than 1. further includes.

[0045] In another possible implementation, for the first communication device to determine the type of the first PUCCH is for the first communication device to determine the type of the first PUCCH based on the configuration parameters within the first PUCCH. for the first communication device to receive the first indication information from the second communication device, where the first indication information indicates whether a plurality of beams are permitted to be used for the first PUCCH, or indicates the type of the first PUCCH. for the first communication device to determine the type of the first PUCCH based on the number of beams currently used for the first PUCCH. for the first communication device to receive the sixth MAC CE from the second communication device, where the sixth MAC CE indicates the type of the first PUCCH, or indicates the number of beams used for the first PUCCH, the number of beams is 1 or 2, or the sixth MAC CE indicates the beam used for the first PUCCH, and the beam used for the first PUCCH includes the first beam and / or the second beam, or for the first communication device to receive the fourth MAC CE from the second communication device, and for the first communication device to determine the type of the first PUCCH based on the type of the fourth MAC CE. includes.

[0046] In another possible implementation, for the first communication device to determine the type of the first PUCCH based on the type of the fourth MAC CE, when the fourth MAC CE is the first type of MAC CE, the first communication device determines that the first PUCCH is a single-beam PUCCH, or when the fourth MAC CE is the second type of MAC CE, the first communication device determines that the first PUCCH is a multi-beam PUCCH, where the first type of MAC CE is a MAC CE indicating a single beam and the second type of MAC CE is a MAC CE indicating multiple beams, is included.

[0047] In another possible implementation, when the network device configures two control resource set groups for the terminal device, for the first communication device to determine the beam used for the first PUCCH according to the first rule, when the first PUCCH is associated with the group index of the first control resource set group within the two control resource set groups, the first communication device determines that the beam used for the first PUCCH is the first beam, or when the first PUCCH is associated with the group index of the second control resource set group within the two control resource set groups, the first communication device determines that the beam used for the first PUCCH is the second beam is included, The first control resource set group is the control resource set group with a smaller group index among the two control resource set groups, and the second control resource set group is the control resource set group with a larger group index among the two control resource set groups, or the first control resource set group is the control resource set group with a larger group index among the two control resource set groups, and the second control resource set group is the control resource set group with a smaller group index among the two control resource set groups.

[0048] In the foregoing implementation form, when the network device configures two control resource set groups for the terminal device, a specific method for the first communication device to determine the beam used for the first PUCCH is provided. As a result, the first communication device can correctly determine the beam used for the first PUCCH and improve the communication transmission performance. For example, in a multi-site transmission scenario, the first communication device can determine the beams used for multiple PUCCHs in accordance with the technical solution of this application to implement multi-site transmission.

[0049] In another possible implementation form, the first communication device includes a network device or a terminal device.

[0050] In another possible implementation form, the first communication device determining the first beam and the second beam is the first communication device receiving second indication information from the second communication device, where the second indication information indicates the first beam and the second beam, the first communication device is a terminal device, and the second communication device is a network device. is included. In this implementation form, the first communication device can determine the first beam and the second beam using the second indication information from the second communication device.

[0051] The third aspect of the present application is the first communication device determining a first beam and a second beam, the first beam and the second beam being of the same type of beam, and the first communication device receiving third instruction information from the second communication device, the third instruction information being the first beam is used for the first shared channel, the second beam is used for the first shared channel, the first beam and the second beam are used for the first shared channel, or the first beam and the second beam are not used for the first shared channel, receiving any one of which indicates providing a beam usage method including.

[0052] In the above technical solution, the first communication device determines the first beam and the second beam, and the first beam and the second beam are of the same type of beam. For example, when the first shared channel is a physical downlink shared channel (P DSCH), the first beam and the second beam are two downlink common beams or two uplink and downlink common beams. When the first shared channel is a physical uplink shared channel (PWhen it is (USCH), the first beam and the second beam are two uplink common beams or two uplink and downlink common beams. The first communication device can determine the beam used for the first shared channel based on the third indication information. In this way, the first communication device can correctly apply the beam indicated by the network device to the first shared channel in order to transmit the first shared channel via the correct beam to improve the communication transmission performance. The second communication device can flexibly instruct the first communication device to transmit the first shared channel via the first beam and / or the second beam by using the third indication information. For example, in a multi-site transmission scenario, the first communication device determines to correctly apply the first beam and the second beam to the first shared channel in order to implement multi-site transmission according to the technical solution of this application.

[0053] In a possible implementation form, the third indication information is downlink control information (D (CI) is carried. In this implementation form, the second communication device can use DCI to send the third indication information to the first communication device in order to provide a specific carrier for sending the indication information.

[0054] In another possible implementation form, when the value of the third indication information is "00", the third indication information indicates that the first beam is used for the first shared channel. When the value of the third indication information is "01", the third indication information indicates that the second beam is used for the first shared channel. When the value of the third indication information is "10", the third indication information indicates that the first beam and the second beam are used for the first shared channel. When the value of the third indication information is "11", the third indication information indicates that the first beam and the second beam are not used for the first shared channel.

[0055] In the foregoing implementation form, in order to facilitate the implementation of the solution, some possible values of the third instruction information and the meaning of the instructions corresponding to the values are shown.

[0056] In another possible implementation form, the first communication device includes a network device or a terminal device.

[0057] In another possible implementation form, the first communication device determining the first beam and the second beam is the first communication device receiving second instruction information from the second communication device, the second instruction information indicating the first beam and the second beam, the first communication device being a terminal device, and the second communication device being a network device. In this implementation form, the first communication device can determine the first beam and the second beam using the second instruction information from the second communication device.

[0058] The fourth aspect of this application is the first communication device determining the first beam and the second beam, the first beam and the second beam being the same type of beam, and the first communication device determining, according to a first rule, the beam used for a first sounding reference signal (S RS) resource, the beam used for the first SRS resource being the first beam and / or the second beam. A beam usage method is provided.

[0059] In the foregoing technical solution, the first communication device determines a first beam and a second beam, and the first beam and the second beam are beams of the same type. For example, the first beam and the second beam are common beams of the same type. For example, the first beam and the second beam are two uplink common beams or two uplink and downlink common beams. The first communication device can determine the beam used for the first SRS resource according to the first rule. In this way, the first communication device can correctly apply the beam indicated by the network device for the transmission of the corresponding reference signal, and improve the communication transmission performance.

[0060] In a possible implementation, when the network device configures two SRS resource sets of the same type for the terminal device, for the first communication device to determine the beam used for the first SRS resource according to the first rule, if the first SRS resource belongs to the corresponding SRS resource in the first SRS resource set within the two SRS resource sets, the first communication device determines that the beam used for the first SRS resource is the first beam, or if the first SRS resource belongs to the corresponding SRS resource in the second SRS resource set within the two SRS resource sets, the first communication device determines that the beam used for the first SRS resource is the second beam, includes The first SRS resource set is the SRS resource set with a smaller index among the two SRS resource sets, and the second SRS resource set is the SRS resource set with a larger index among the two SRS resource sets. The first SRS resource set is the SRS resource set with a larger index among the two SRS resource sets, and the second SRS resource set is the SRS resource set with a smaller index among the two SRS resource sets. The first SRS resource set is the SRS resource set with a higher configuration ranking among the two SRS resource sets, and the second SRS resource set is the SRS resource set with a lower configuration ranking among the two SRS resource sets. Or the first SRS resource set is the SRS resource set with a lower configuration ranking among the two SRS resource sets, and the second SRS resource set is the SRS resource set with a higher configuration ranking among the two SRS resource sets.

[0061] In the foregoing implementation form, when the network device configures two SRS resource set groups of the same type for the terminal device, a specific method for the first communication device to determine the beam used for the first SRS resource is provided. As a result, the first communication device transmits the first SRS resource via the correct beam, improving the communication transmission performance.

[0062] In another possible implementation form, when the network device configures one SRS resource set for the terminal device and the first SRS resource belongs to the SRS resource set, for the first communication device to determine the beam used for the first SRS resource according to the first rule, The first communication device determines that the beam used for the first SRS resource is the first beam. The first communication device determines that the beam used for the first SRS resource is the second beam. If the beam currently used for the first SRS resource and the first beam belong to the same beam set, the first communication device updates the beam currently used for the first SRS resource to the first beam, or if the beam currently used for the first SRS resource and the second beam belong to the same beam set, the first communication device updates the beam currently used for the first SRS resource to the second beam. The first communication device receives a first radio resource control ( (RRC) message or a first MAC CE from the second communication device, where the first RRC message or the first MAC CE indicates that one or both of the first beam and the second beam are used for the first SRS resource, and the first communication device determines the beam to be used for the first SRS resource based on the first RRC message or the first MAC CE, or The first communication device receives a second RRC message or a second MAC CE from the second communication device, second where the RRC message or the second MAC CE indicates that the first beam, the second beam, or both the first beam and the second beam are used for the first SRS resource, and the first communication device determines the beam to be used for the first SRS resource based on the second RRC message or the second MAC CE is included.

[0063] In the foregoing implementation form, when a network device configures an SRS resource set for a terminal device, a specific determination method for the first communication device to determine the beam used for the first SRS resource is provided. In this way, the first communication device can correctly determine the beam used for the first SRS resource in order to select an appropriate beam for transmitting the first SRS resource to improve communication transmission performance. For example, the beams used by different sites are composed of different beam sets. In other words, the beams within the same beam set are the beams used by the same site. When the beam currently used for the first SRS resource and the first beam belong to the same beam set, the same site is preferably used to transmit the first SRS resource. Therefore, the beam currently used for the first SRS resource is updated to the first beam. The description of the second beam is the same. Details are not provided one by one again in this specification.

[0064] In another possible implementation form, the first communication device includes a network device or a terminal device.

[0065] In another possible implementation form, for the first communication device to determine the first beam and the second beam, it is for the first communication device to receive second indication information from the second communication device, where the second indication information indicates the first beam and the second beam, the first communication device is a terminal device, and the second communication device is a network device. This is included. In this implementation form, the first communication device can determine the first beam and the second beam using the second indication information from the second communication device.

[0066] The fifth aspect of this application is a beam usage method, The first communication device determines a first beam and a second beam, where the first beam and the second beam are of the same type of beam, and the first communication device determines, according to a first rule, a beam to be used for a first channel state information reference signal (C (SI-RS) resource, where the beam to be used for the first CSI-RS resource is the first beam and / or the second beam to provide a beam usage method.

[0067] In the above technical solution, the first communication device determines the first beam and the second beam, and the first beam and the second beam are of the same type of beam. For example, the first beam and the second beam are common beams of the same type. For example, the first beam and the second beam are two uplink common beams or two uplink and downlink common beams. The first communication device can determine the beam to be used for the first CSI-RS resource according to the first rule. In this way, the first communication device can correctly apply the beam indicated by the network device for the transmission of the corresponding reference signal, and improve the communication transmission performance.

[0068] In a possible implementation, when the network device configures two CSI-RS resource sets of the same type for the terminal device, the first communication device determines the beam to be used for the first CSI-RS resource according to the first rule, which is When the first CSI-RS resource belongs to the corresponding CSI-RS resource in the first CSI-RS resource set within the two CSI-RS resource sets, the first communication device determines that the beam used for the first CSI-RS resource is the first beam, or when the first CSI-RS resource belongs to the corresponding CSI-RS resource in the second CSI-RS resource set within the two CSI-RS resource sets, the first communication device determines that the beam used for the first CSI-RS resource is the second beam. including The first CSI-RS resource set is the CSI-RS resource set with a smaller index among the two CSI-RS resource sets, and the second CSI-RS resource set is the CSI-RS resource set with a larger index among the two CSI-RS resource sets. The first CSI-RS resource set is the CSI-RS resource set with a larger index among the two CSI-RS resource sets, and the second CSI-RS resource set is the CSI-RS resource set with a smaller index among the two CSI-RS resource sets. The first CSI-RS resource set is the CSI-RS resource set with a higher configuration ranking among the two CSI-RS resource sets, and the second CSI-RS resource set is the CSI-RS resource set with a lower configuration ranking among the two CSI-RS resource sets, or the first CSI-RS resource set is the CSI-RS resource set with a lower configuration ranking among the two CSI-RS resource sets, and the second CSI-RS resource set is the CSI-RS resource set with a higher configuration ranking among the two CSI-RS resource sets.

[0069] In the foregoing implementation form, when the network device configures two CSI-RS resource set groups of the same type for the terminal device, a specific method for the first communication device to determine the beam used for the first CSI-RS resource is provided. As a result, the first communication device transmits the first CSI-RS resource via the correct beam, improving the communication transmission performance.

[0070] In another possible implementation form, when the network device configures one CSI-RS resource set for the terminal device and the first CSI-RS resource belongs to the CSI-RS resource set, for the first communication device to determine the beam used for the first CSI-RS resource according to the first rule, the first communication device determines that the beam used for the first CSI-RS resource is the first beam, the first communication device determines that the beam used for the first CSI-RS resource is the second beam, when the beam currently used for the first CSI-RS resource and the first beam belong to the same beam set, the first communication device updates the beam currently used for the first CSI-RS resource to the first beam, or when the beam currently used for the first CSI-RS resource and the second beam belong to the same beam set, the first communication device updates the beam currently used for the first CSI-RS resource to the second beam, the first communication device receives the first RRC message or the first MAC CE from the second communication device, where the first RRC message or the first MAC CE indicates that one or both of the first beam or the second beam are used for the first CSI-RS resource, the first communication device determines the beam used for the first CSI-RS resource based on the first RRC message or the first MAC CE, or The first communication device is to receive a second RRC message or a second MAC CE from a second communication device, where the first RRC message or the second MAC CE indicates that the first beam, the second beam, or both the first beam and the second beam are used for a first CSI-RS resource, and the first communication device determines a beam to be used for the first CSI-RS resource based on the second RRC message or the second MAC CE. including.

[0071] In the foregoing implementation, when a network device configures a CSI-RS resource set for a terminal device, a specific determination method for the first communication device to determine a beam used for the first CSI-RS resource is provided. In this way, the first communication device can correctly determine the beam used for the first CSI-RS resource in order to select an appropriate beam for transmitting the first CSI-RS resource to improve communication transmission performance. For example, the beams used by different sites are composed of different beam sets. In other words, the beams within the same beam set are the beams used by the same site. If the beam currently used for the first CSI-RS resource and the first beam belong to the same beam set, the same site is preferably used to transmit the first CSI-RS resource. Therefore, the beam currently used for the first CSI-RS resource is updated to the first beam. The same explanation applies to the second beam. Details are not provided one by one again in this specification.

[0072] In another possible implementation, the first communication device includes a network device or a terminal device.

[0073] In another possible implementation, for the first communication device to determine the first beam and the second beam, The first communication device receives second instruction information from the second communication device, where the second instruction information indicates a first beam and a second beam, the first communication device is a terminal device, and the second communication device is a network device, the receiving is included. In this implementation, the first communication device can determine the first beam and the second beam using the second instruction information from the second communication device.

[0074] Based on any one of the first aspect to the fifth aspect, the first beam and the second beam are two common beams of the same type indicated by the network device to the terminal device. The first beam and the second beam are The first beam is the beam with a smaller index among the two beams, and the second beam is the beam with a larger index among the two beams. The first beam is the beam corresponding to the smaller transmission configuration indicator (TCI) field value among the two beams, and the second beam is the larger one among the two beams (T beam corresponding to the CI) field value. The first beam is the beam with a higher configuration ranking among the two beams, and the second beam is the beam with a lower configuration ranking among the two beams. The first beam belongs to a first beam set, and the second beam belongs to a second beam set. The first beam set and the second beam set are two beam sets of the same type configured by the network device for the terminal device. The first beam set is the beam set with a smaller index among the two beam sets of the same type, and the second beam set is the beam set with a larger index among the two beam sets. Or the first beam set is the beam set with a higher configuration ranking among the two beam sets of the same type, and the second beam set is the beam set with a lower configuration ranking among the two beam sets. The first beam belongs to the first beam group, the second beam belongs to the second beam group, the first beam group and the second beam group are two beam groups of the same type that are activated by the network device using MAC CE, the first beam group is the beam group with a smaller index among the two beam groups of the same type, the second beam group is the beam group with a larger index among the two beam groups of the same type, or the first beam group is the beam group with a higher activation ranking in the MAC CE among the two beam groups of the same type, and the second beam group is the beam group with a lower activation ranking in the MAC CE among the two beam groups of the same type. The first beam is the beam indicated by the first TCI field in the DCI, and the second beam is the beam indicated by the second TCI field in the DCI. The first TCI field corresponds to the first beam group, and the second TCI field corresponds to the second beam group. The first communication device determines the first beam from the first beam group using the field value of the first TCI field and determines the second beam from the second beam group using the field value of the second TCI field. The first beam is the beam corresponding to the first part of the field value among all the field values of the TCI field in the DCI, and the second beam is the beam corresponding to the second part of the field value among all the field values of the TCI field in the DCI. The first part of the field value first corresponds to the beam group, and the second part of the field value corresponds to the second beam group. The first communication device determines the first beam from the first beam group using the first part of the field value and determines the second beam from the second beam group using the second part of the field value. The first beam and the second beam are two beams of the same type indicated by the same TCI field in the DCI. The first beam is the first of the two beams of the same type indicated by the same TCI field, and the second beam is the second of the two beams of the same type indicated by the same TCI field. The first beam is the beam with a higher activation ranking in the MAC CE among the two beams of the same type, and the second beam is the beam with a lower activation ranking in the MAC CE among the two beams of the same type, or The first beam is the beam indicated by the first DCI, and the second beam is the beam indicated by the second DCI. The first DCI is the DCI carried on the PDCCH corresponding to the first control resource set group within two control resource set groups configured by the network device for the terminal device. The second DCI is the DCI carried on the PDCCH corresponding to the second control resource set group within the two control resource set groups. The first control resource set group is the control resource set group with a smaller group index within the two control resource set groups, and the second control resource set group is the control resource set group with a larger group index within the two control resource set groups. Or the value of the field or the value of some bits of the field in the first DCI is the first value, and the value of the field or the value of some bits of the field in the second DCI is the second value. includes any one of the above.

[0075] In the foregoing implementation forms, several possible methods for distinguishing between a first beam and a second beam are shown so that the first communication device can distinguish between two beams of the same type indicated by the network device. For example, in a multi-site transmission scenario, the first beam and the second beam may be beams used by two different sites. Specifically, the first beam and the second beam may be indicated by any one of the above methods.

[0076] A sixth aspect of the present application is a processing module configured to determine a first beam and a second beam, the first beam and the second beam being beams of the same type, and to determine, according to a first rule, a beam to be used for a first control resource set, the beam to be used for the first control resource set being the first beam and / or the second beam. A communication device including the above is provided.

[0077] In a possible implementation form, when the network device configures two control resource set groups for the terminal device and each control resource set group includes at least one control resource set, the processing module is specifically configured such that when the first control resource set belongs to the first control resource set group among the two control resource set groups, it is determined that the beam to be used for the first control resource set is the first beam, or when the first control resource set belongs to the second control resource set group among the two control resource set groups, it is determined that the beam to be used for the first control resource set is the second beam and is thus specifically configured, The first control resource set group is the control resource set group with a smaller group index among the two control resource set groups, and the second control resource set group is the control resource set group with a larger group index among the two control resource set groups, or the first control resource set group is the control resource set group with a larger group index among the two control resource set groups, and the second control resource set group is the control resource set group with a smaller group index among the two control resource set groups.

[0078] In another possible implementation, when the network device configures two control resource sets for the terminal device and the two control resource sets are used for the repeated transmission of the control channel, the processing module If the first control resource set is the control resource set with a smaller index among the two control resource sets, determine that the beam used for the first control resource set is the first beam, or if the first control resource set is the control resource set with a larger index among the two control resource sets, determine that the beam used for the first control resource set is the second beam, or If the first control resource set is the control resource set with a higher configuration ranking among the two control resource sets, determine that the beam used for the first control resource set is the first beam, or if the first control resource set is the control resource set with a lower configuration ranking among the two control resource sets, determine that the beam used for the first control resource set is the second beam is specifically configured as follows.

[0079] In another possible implementation, when the network device configures two control resource sets for the terminal device and the two control resource sets are used for the repeated transmission of the control channel, the processing module If the first control resource set is the control resource set with a larger index among the two control resource sets, determine that the beam used for the first control resource set is the first beam, or if the first control resource set is the control resource set with a smaller index among the two control resource sets, determine that the beam used for the first control resource set is the second beam, or If the first control resource set is the control resource set with a lower configuration ranking among the two control resource sets, determine that the beam used for the first control resource set is the first beam, or if the first control resource set is the control resource set with a higher configuration ranking among the two control resource sets, determine that the beam used for the first control resource set is the second beam is specifically configured as follows.

[0080] In another possible implementation, the use of two control resource sets for the repeated transmission of the control channel is subject to the following conditions The network device configures two control resource set groups for the terminal device, and the two control resource sets belong to different control resource set groups The network device configures two control resource set groups for the terminal device, and the index of the control resource set in the first control resource set group within the two control resource set groups is smaller than the index of the control resource set in the second control resource set group within the two control resource set groups, or the configuration ranking of the control resource set in the first control resource set group is before the configuration ranking of the control resource set in the second control resource set group, and the first control resource set group is the control resource set group with a smaller group index among the two control resource set groups, and the second control resource set group is the control resource set group with a larger group index among the two control resource set groups, or The network device configures two control resource set groups for the terminal device, and the index of the control resource set in the first control resource set group within the two control resource set groups is greater than the index of the control resource set in the second control resource set group within the two control resource set groups, or the configuration ranking of the control resource set in the first control resource set group is later than the configuration ranking of the control resource set in the second control resource set group. The first control resource set group is the control resource set group with a smaller group index among the two control resource set groups, and the second control resource set group is the control resource set group with a larger group index among the two control resource set groups, or The network device configures only one control resource set group for the terminal device, and the two control resource sets belong to the control resource set group. satisfies any one of the following.

[0081] In another possible implementation, when the network device configures one control resource set group for the terminal device, the control resource set group includes one or more single-beam control resource sets, and the first control resource set belongs to one of the one or more single-beam control resource sets, the processing module determines that the beam used for the first control resource set is the first beam. determines that the beam used for the first control resource set is the second beam, or If the beam currently used in the first control resource set belongs to the same beam set as the first beam, determine to update the beam currently used in the first control resource set to the first beam, or if the beam currently used in the first control resource set belongs to the same beam set as the second beam, determine to update the beam currently used in the first control resource set to the second beam is specifically configured as follows.

[0082] In another possible implementation, the first control resource set is not used for repeated transmission of the control channel.

[0083] In another possible implementation, a network device configures a control resource set group for a terminal device, the control resource set group includes one or more multi-beam control resource sets, and when the first control resource set belongs to one of the one or more multi-beam control resource sets, the processing module is specifically configured to determine that the beams used in the first control resource set are the first beam and the second beam.

[0084] In another possible implementation, the transceiver module is configured to receive the first MAC CE from the second communication device, and the first MAC CE includes the index of the first control resource set. The processing module The first MAC CE is a first type of MAC CE, the first MAC CE includes first beam indication information, when the first beam indication information indicates a first beam, at any moment within a first period, it is determined that the first common beam within two common beams of the same type that become effective at any moment is used for a first control resource set, the first period is a time interval from the effective time point of the beam indicated by the first MAC CE to the effective time point of the beam indicated by a second MAC CE, the second MAC CE indicates the beam used for the first control resource set, and the second MAC CE is the MAC CE most recently received by the communication device after the first MAC CE is received. If the first MAC CE is a first type of MAC CE, the first MAC CE includes first beam indication information, and the first beam indication information indicates a second beam, at any moment within the first period, it is determined that the second common beam within two common beams of the same type that become effective at any moment is used for the first control resource set, or If the first MAC CE is a second type of MAC CE, the first MAC CE includes second beam indication information and third beam indication information, the second beam indication information indicates a first beam, and the third beam indication information indicates a second beam, at any moment within the first period, it is determined that two common beams of the same type that become effective at any moment are used for the first control resource set It is specifically configured as follows.

[0085] In another possible implementation, the processing module further determines the type of the first control resource set, and the type of the first control resource set includes a single-beam control resource set or a multi-beam control resource set.

[0086] In another possible implementation, the processing module determines the type of the first control resource set based on the configuration parameters within the first control resource set. Receive first indication information from a second communication device, where the first indication information indicates whether a plurality of beams are permitted to be used for a first control resource set, or the first indication information indicates the type of the first control resource set, the communication device is a terminal device, and the second communication device is a network device. Determine the type of the first control resource set based on the amount of beams currently used for the first control resource set. Receive a third MAC CE from the second communication device, where the third MAC CE indicates the type of the first control resource set, or the third MAC CE indicates the number of beams used for the first control resource set, the number of beams includes 1 or 2, or the third MAC CE indicates the beams used for the first control resource set, and the beams used for the first control resource set include a first beam and / or a second beam, or Receive a first MAC CE from the second communication device, and determine the type of the first control resource set based on the type of the first MAC CE. It is specifically configured as follows.

[0087] In another possible implementation, the processing module When the first MAC CE is a first type of MAC CE, determine that the first control resource set is a single-beam control resource set, or when the first MAC CE is a second type of MAC CE, determine that the first control resource set is a multi-beam control resource set, where the first type of MAC CE is a MAC CE indicating a single beam, and the second type of MAC CE is a MAC CE indicating a plurality of beams. It is specifically configured as follows.

[0088] In another possible implementation, the processing module When the number of beams currently used for the first control resource set is 1, determine that the type of the first control resource set is a single-beam control resource set, or If the number of beams currently used in the first control resource set is greater than 1, it is determined that the type of the first control resource set is a multi-beam control resource set. It is specifically configured as follows.

[0089] In another possible implementation, the single beam Control The number of beams currently used in the resource set is 1, and the multi-beam Control The number of beams currently used in the resource set is greater than 1.

[0090] In another possible implementation, the communication device includes a network device or a terminal device.

[0091] In another possible implementation, the processing module receives second instruction information from a second communication device, It is specifically configured such that the second instruction information indicates the first beam and the second beam, the communication device is a terminal device, and the second communication device is a network device.

[0092] The seventh aspect of this application is A processing module that determines a first beam and a second beam, the first beam and the second beam being of the same type of beam, determines the beam used for the first PUCCH according to a first rule, and is configured such that the beam used for the first PUCCH is the first beam and / or the second beam A communication device including the above is provided.

[0093] In a possible implementation, when the first PUCCH is a single-beam PUCCH, the processing module Determines that the beam used for the first PUCCH is the first beam, Determines that the beam used for the first PUCCH is the second beam, or If the beam currently used for the first PUCCH belongs to the same beam set as the first beam, determine to update the beam currently used for the first PUCCH to the first beam, or if the beam currently used for the first PUCCH belongs to the same beam set as the second beam, determine to update the beam currently used for the first PUCCH to the second beam It is specifically configured as follows.

[0094] In another possible implementation, when the first PUCCH is a multi-beam PUCCH, the processing module is specifically configured to determine that the beams used for the first PUCCH are the first beam and the second beam.

[0095] In another possible implementation, the transceiver module is configured to receive a fourth MAC CE from a second communication device, and the fourth MAC CE includes an index of the first PUCCH.

[0096] The processing module When the fourth MAC CE is a first type of MAC CE, the fourth MAC CE includes fourth beam indication information, and the fourth beam indication information indicates the first beam, at any moment within the second period, determine that the first common beam within two common beams of the same type that become valid at any moment is used for the first PUCCH. The second period is a time interval from the effective time point of the beam indicated by the fourth MAC CE, that is, the beam indicated by the fourth beam indication information, to the effective time point of the beam indicated by the fifth MAC CE. The fifth MAC CE indicates the beam used for the first PUCCH and is the MAC CE most recently received by the communication device after the fourth MAC CE is received. When the fourth MAC CE is the first type of MAC CE, the fourth MAC CE includes fourth beam indication information, and when the fourth beam indication information indicates a second beam, at any moment within the second period, it is determined that the second common beam within two common beams of the same type that become valid at any moment is used for the first PUCCH, or When the fourth MAC CE is the second type of MAC CE, the fourth MAC CE includes fifth beam indication information and sixth beam indication information, the fifth beam indication information indicates a first beam, and the sixth beam indication information indicates a second beam, at any moment within the second period, it is determined that two common beams of the same type that become valid at any moment are used for the first PUCCH It is specifically configured as follows.

[0097] In another possible implementation, the processing module determines the type of the first PUCCH, and the type of the first PUCCH includes a single-beam PUCCH or a multi-beam PUCCH, the number of beams used for the single-beam PUCCH is 1, and the number of beams used for the multi-beam PUCCH is greater than 1, and it is further configured as such.

[0098] In another possible implementation, the processing module determines the type of the first PUCCH based on the configuration parameters within the first PUCCH, receives first indication information from the second communication device, and the first indication information indicates whether a plurality of beams are permitted to be used for the first PUCCH, or indicates the type of the first PUCCH, determines the type of the first PUCCH based on the number of beams currently used for the first PUCCH Receive a sixth MAC CE from a second communication device, where the sixth MAC CE indicates a type of a first PUCCH, or indicates a number of beams used for the first PUCCH, the number of beams being 1 or 2, or the sixth MAC CE indicates a beam used for the first PUCCH, the beam used for the first PUCCH including a first beam and / or a second beam, or Receive a fourth MAC CE from a second communication device and determine a type of the first PUCCH based on a type of the fourth MAC CE is specifically configured as follows.

[0099] In another possible implementation, the processing module When the fourth MAC CE is a first type of MAC CE, determine that the first PUCCH is a single-beam PUCCH, or when the fourth MAC CE is a second type of MAC CE, determine that the first PUCCH is a multi-beam PUCCH, where the first type of MAC CE is a MAC CE indicating a single beam and the second type of MAC CE is a MAC CE indicating a plurality of beams, and is specifically configured as follows.

[0100] In another possible implementation, when a network device configures two control resource set groups for a terminal device, the processing module When the first PUCCH is associated with a group index of a first control resource set group within two control resource set groups, determine that the beam used for the first PUCCH is the first beam, or when the first PUCCH is associated with a group index of a second control resource set group within two control resource set groups, determine that the beam used for the first PUCCH is the second beam is specifically configured as follows, The first control resource set group is the control resource set group with a smaller group index among the two control resource set groups, and the second control resource set group is the control resource set group with a larger group index among the two control resource set groups, or the first control resource set group is the control resource set group with a larger group index among the two control resource set groups, and the second control resource set group is the control resource set group with a smaller group index among the two control resource set groups.

[0101] In another possible implementation form, the communication device includes a network device or a terminal device.

[0102] In another possible implementation form, the processing module receives second indication information from a second communication device, and is specifically configured such that the second indication information indicates a first beam and a second beam, the communication device is a terminal device, and the second communication device is a network device.

[0103] The eighth aspect of this application is to determine a first beam and a second beam, the first beam and the second beam being of the same type of beam a processing module configured to and a transceiver module configured to receive third indication information from a second communication device, the third indication information indicating that the first beam is used for a first shared channel, the second beam is used for the first shared channel, the first beam and the second beam are used for the first shared channel, or the first beam and the second beam are not used for the first shared channel, and providing a communication device including the transceiver module that indicates any one of the above.

[0104] In a possible implementation form, the third indication information is carried by DCI.

[0105] In another possible implementation form, when the value of the third indication information is "00", the third indication information indicates that the first beam is used for the first shared channel. When the value of the third indication information is "01", the third indication information indicates that the second beam is used for the first shared channel. When the value of the third indication information is "10", the third indication information indicates that the first beam and the second beam are used for the first shared channel. When the value of the third indication information is "11", the third indication information indicates that the first beam and the second beam are not used for the first shared channel.

[0106] In another possible implementation form, the communication device includes a network device or a terminal device.

[0107] In another possible implementation form, the processing module receives the second indication information from the second communication device, and is specifically configured such that the second indication information indicates the first beam and the second beam, the communication device is a terminal device, and the second communication device is a network device.

[0108] The ninth aspect of this application is a processing module configured to determine a first beam and a second beam, the first beam and the second beam being of the same type of beam, and to determine, according to a first rule, the beam used for a first SRS resource, and the beam used for the first SRS resource being the first beam and / or the second beam. A communication device including the above is provided.

[0109] In a possible implementation form, when the network device configures two SRS resource sets of the same type for the terminal device, the processing module If the first SRS resource belongs to the corresponding SRS resource in the first SRS resource set within the two SRS resource sets, determine that the beam used for the first SRS resource is the first beam, or if the first SRS resource belongs to the corresponding SRS resource in the second SRS resource set within the two SRS resource sets, determine that the beam used for the first SRS resource is the second beam is specifically configured as The first SRS resource set is the SRS resource set with a smaller index among the two SRS resource sets, and the second SRS resource set is the SRS resource set with a larger index among the two SRS resource sets. The first SRS resource set is the SRS resource set with a larger index among the two SRS resource sets, and the second SRS resource set is the SRS resource set with a smaller index among the two SRS resource sets. The first SRS resource set is the SRS resource set with a higher configuration ranking among the two SRS resource sets, and the second SRS resource set is the SRS resource set with a lower configuration ranking among the two SRS resource sets. Or the first SRS resource set is the SRS resource set with a lower configuration ranking among the two SRS resource sets, and the second SRS resource set is the SRS resource set with a higher configuration ranking among the two SRS resource sets.

[0110] In another possible implementation, when the network device configures one SRS resource set for the terminal device and the first SRS resource belongs to the SRS resource set, the processing module determines that the beam used for the first SRS resource is the first beam determines that the beam used for the first SRS resource is the second beam, or If the beam currently used for the first SRS resource belongs to the same beam set as the first beam, update the beam currently used for the first SRS resource to the first beam, or if the beam currently used for the first SRS resource belongs to the same beam set as the second beam, update the beam currently used for the first SRS resource to the second beam is specifically configured as follows.

[0111] In another possible implementation form, the communication device includes a network device or a terminal device.

[0112] In another possible implementation form, the processing module receives second indication information from a second communication device, and the second indication information indicates the first beam and the second beam, is specifically configured as follows.

[0113] The tenth aspect of this application is a processing module configured to determine a first beam and a second beam, the first beam and the second beam being beams of the same type, and determine, according to a first rule, the beam used for a first CSI-RS resource, the beam used for the first CSI-RS resource being the first beam and / or the second beam A communication device including the above is provided.

[0114] In a possible implementation form, when the network device configures two CSI-RS resource sets of the same type for the terminal device, the processing module If the first CSI-RS resource belongs to the corresponding CSI-RS resource in the first CSI-RS resource set within the two CSI-RS resource sets, determine that the beam used for the first CSI-RS resource is the first beam, or if the first CSI-RS resource belongs to the corresponding CSI-RS resource in the second CSI-RS resource set within the two CSI-RS resource sets, determine that the beam used for the first CSI-RS resource is the second beam is specifically configured as The first CSI-RS resource set is the CSI-RS resource set with a smaller index among the two CSI-RS resource sets, the second CSI-RS resource set is the CSI-RS resource set with a larger index among the two CSI-RS resource sets, the first CSI-RS resource set is the CSI-RS resource set with a larger index among the two CSI-RS resource sets, the second CSI-RS resource set is the CSI-RS resource set with a smaller index among the two CSI-RS resource sets, the first CSI-RS resource set is the CSI-RS resource set with a higher configuration ranking among the two CSI-RS resource sets, the second CSI-RS resource set is the CSI-RS resource set with a lower configuration ranking among the two CSI-RS resource sets, or the first CSI-RS resource set is the CSI-RS resource set with a lower configuration ranking among the two CSI-RS resource sets, and the second CSI-RS resource set is the CSI-RS resource set with a higher configuration ranking among the two CSI-RS resource sets.

[0115] In another possible implementation, when the network device configures one CSI-RS resource set for the terminal device and the first CSI-RS resource belongs to the CSI-RS resource set, the processing module determines that the beam used for the first CSI-RS resource is the first beam Determine that the beam used for the first CSI-RS resource is the second beam, If the beam currently used for the first CSI-RS resource and the first beam belong to the same beam set, update the beam currently used for the first CSI-RS resource to the first beam, or if the beam currently used for the first CSI-RS resource and the second beam belong to the same beam set, update the beam currently used for the first CSI-RS resource to the second beam It is specifically configured as follows.

[0116] In another possible implementation, the communication device includes a network device or a terminal device.

[0117] In another possible implementation, the processing module Receives second indication information from a second communication device, and the second indication information indicates the first beam and the second beam. It is specifically configured as follows.

[0118] Based on any one of the sixth aspect to the tenth aspect, in a possible implementation, the first beam and the second beam are two common beams of the same type indicated by the network device to the terminal device. The first beam and the second beam are The first beam is the beam with a smaller index among the two beams, and the second beam is the beam with a larger index among the two beams. The first beam is the beam corresponding to the smaller transmission configuration indicator (TCI) field value among the two beams, and the second beam is the beam corresponding to the larger TCI field value among the two beams. The first beam is the beam with a higher configuration ranking among the two beams, and the second beam is the beam with a lower configuration ranking among the two beams. The first beam belongs to the first beam set, the second beam belongs to the second beam set, and the first beam set and the second beam set are two beam sets of the same type configured by a network device for a terminal device. The first beam set is the beam set with a smaller index among the two beam sets of the same type, and the second beam set is the beam set with a larger index among the two beam sets. Or the first beam set is the beam set with a higher configuration ranking among the two beam sets of the same type, and the second beam set is the beam set with a lower configuration ranking among the two beam sets. The first beam belongs to the first beam group, the second beam belongs to the second beam group, and the first beam group and the second beam group are two beam groups of the same type activated by a network device using MAC CE. The first beam group is the beam group with a smaller index among the two beam groups of the same type, and the second beam group is the beam group with a larger index among the two beam groups. Or the first beam group is the beam group with a higher activation ranking within the MAC CE among the two beam groups of the same type, and the second beam group is the beam group with a lower activation ranking within the MAC CE among the two beam groups of the same type. The first beam is the beam indicated by the first TCI field in the DCI, and the second beam is the beam indicated by the second TCI field in the DCI. The first TCI field corresponds to the first beam group, and the second TCI field corresponds to the second beam group. The communication device uses the field value of the first TCI field to determine the first beam from the first beam group and uses the field value of the second TCI field to determine the second beam from the second beam group. The first beam is a beam corresponding to the first part of the field value within all field values of the TCI field in the DCI, and the second beam is a beam corresponding to the second part of the field value within all field values of the TCI field in the DCI. The first part of the field value first corresponds to a beam group, and the second part of the field value corresponds to a second beam group. The communication device determines the first beam from the first beam group using the first part of the field value and determines the second beam from the second beam group using the second part of the field value. The first beam and the second beam are two beams of the same type indicated by the same TCI field in the DCI. The first beam is the first of the two beams of the same type indicated by the same TCI field, and the second beam is the second of the two beams of the same type indicated by the same TCI field. The first beam is the beam with a higher activation ranking in the MAC CE among the two beams of the same type, and the second beam is the beam with a lower activation ranking in the MAC CE among the two beams of the same type, or The first beam is the beam indicated by the first DCI, the second beam is the beam indicated by the second DCI, the first DCI is the DCI carried on the PDCCH corresponding to the first control resource set group within two control resource set groups configured by the network device for the terminal device, the second DCI is the DCI carried on the PDCCH corresponding to the second control resource set group within two control resource set groups, the first control resource set group is the control resource set group with a smaller group index within two control resource set groups, the second control resource set group is the control resource set group with a larger group index within two control resource set groups, or the value of the field or the value of some bits of the field in the first DCI is the first value, and the value of the field or the value of some bits of the field in the second DCI is the second value. including any one of them.

[0119] In the foregoing implementation manner, several possible methods for distinguishing the first beam and the second beam are shown so that the communication device can distinguish two beams of the same type indicated by the network device. For example, in a multi-site transmission scenario, the first beam and the second beam may be the beams used by two different sites. Specifically, the first beam and the second beam may be shown in any one of the above methods.

[0120] The eleventh aspect of this application provides a communication device. The communication device includes a processor and a memory. The memory stores a computer program or computer instructions. The processor is configured to call and operate the computer program or computer instructions stored in the memory, so that the processor can implement any implementation manner of any one of the first aspect to the fifth aspect.

[0121] Optionally, the communication device further includes a transceiver. The processor is configured to control the transceiver to receive and transmit signals.

[0122] A twelfth aspect of the present application provides a communication device. The communication device includes a processor. The processor is configured to call a computer program or computer instructions in a memory to enable the processor to implement any implementation form of any one of the first aspect to the fifth aspect. Alternatively, the processor is configured to perform any implementation form of any one of the first aspect to the fifth aspect.

[0123] Optionally, the communication device further includes a transceiver. The processor is configured to control the transceiver to receive and transmit signals.

[0124] A thirteenth aspect of the present application provides a communication device. The communication device includes a processor. The processor is configured to perform any implementation form of any one of the first aspect to the fifth aspect.

[0125] A fourteenth aspect of the present application provides a computer program product including instructions. When the computer program product operates on a computer, the computer is enabled to perform any implementation form of any one of the first aspect to the fifth aspect.

[0126] A fifteenth aspect of the present application provides a computer-readable storage medium including computer instructions. When the instructions are operated on a computer, the computer is enabled to perform any implementation form according to any one of the first aspect to the fifth aspect.

[0127] A sixteenth aspect of the present application provides a chip device including a processor. The processor is configured to call a computer program or computer instructions in a memory to enable the processor to perform any implementation form of any one of the first aspect to the fifth aspect.

[0128] Optionally, the processor is coupled to the memory via an interface.

[0129] From the above technical solutions, it can be found that the embodiments of the present application have the following advantages.

[0130] From the above technical solutions, it can be found that the first communication device determines the first beam and the second beam, the first beam and the second beam are beams of the same type, and the first beam and the second beam are two beams instructed by the network device to the terminal device. The first communication device determines the beam used for the first control resource set according to the first rule, and the beam used for the first control resource set is the first beam and / or the second beam. According to the technical solution of the present application, it can be found that the first communication device can determine the beam used for the first control resource set from the first beam and the second beam according to the first rule. In this way, the first communication device correctly applies the beam instructed by the network device to the channel corresponding to the control resource set so that the channel corresponding to the control resource set is transmitted through the correct beam, and the communication transmission performance can be improved. For example, in a multi-site transmission scenario, the first communication device determines to correctly apply the first beam and the second beam to the corresponding physical downlink control channel for implementing multi-site transmission according to the technical solution of the present application.

Brief Description of the Drawings

[0131]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Figure 14

Embodiments for Carrying Out the Invention

[0132] Embodiments of the present application provide a beam usage method and related devices such that a first communication device determines a beam to be used for a first control resource set according to a first rule. In this way, the first communication device correctly applies the beam indicated by the network device to the channel corresponding to the control resource set so that the channel corresponding to the control resource set is transmitted via the correct beam, improving communication transmission performance.

[0133] Hereinafter, the technical solutions of the present application will be described with reference to the accompanying drawings.

[0134] The technical solution of this application is applicable to various communication systems, such as 5G systems, New Radio (N (NR) systems, Long Term Evolution (L (LTE) systems, LTE Frequency Division Duplexing F (FDD) systems, LTE Time Division Duplexing (T (TDD) systems, Universal Mobile Telecommunication System (U (UMTS), post-5G network systems for mobile communications system (e.g., 6G mobile communication systems), or vehicle-to-vehicle / road-to-vehicle (V (V2X) communication systems.

[0135] The communication system applicable to this application includes a first communication device. The first communication device is a terminal device or a network device. Optionally, when the first communication device is a terminal device, the communication system further includes a second communication device. The second communication device is a network device. Unless otherwise specified in the following description, the first communication device may be understood as a terminal device or a network device.

[0136] Hereinafter, the terminal device and the network device in this application will be described.

[0137] The terminal device may be a wireless terminal device capable of receiving scheduling and indication information from a network device. The terminal device may be a device that provides voice and / or data connections to a user, a handheld device with a wireless connection function, or another processing device connected to a wireless modem.

[0138] The terminal device may be a user equipment (U (UE), a mobile station (M (MS), a mobile terminal (MIt is also called, for example, (T). A terminal device is a device equipped with a wireless communication function (providing voice / data connection to a user), such as a handheld device or an in-vehicle device having a wireless connection function. Currently, some examples of terminal devices are mobile phones, tablet computers, notebook computers, palmtop computers, mobile Internet devices (M ID), wearable devices, virtual reality (V R) devices, augmented reality (A R) devices, wireless terminals in industrial control, wireless terminals in vehicle Internet, wireless terminals in self-driving, wireless terminals in remote medical surgery, wireless terminals in smart grid, wireless terminals in transportation safety, wireless terminals in smart city, wireless terminals in smart home, etc. For example, a wireless terminal in vehicle Internet may be an in-vehicle device, the entire vehicle device, an in-vehicle module, a vehicle, etc. A wireless terminal in industrial control may be a camera, a robot, etc. A wireless terminal in smart home may be a TV, an air conditioner, a floor sweeper, a speaker, a set-top box, etc.

[0139] A network device may be a device within a wireless network. For example, a network device may be a device deployed in a wireless access network to provide a wireless communication function to a terminal device. For example, a network device may be a wireless access network (R AN) node and may also be called an access network device.

[0140] A network device is an evolved Node B (eNB), Radio Network Controller (R NC), Node B (N B), Base Station Controller (B SC), Base Transceiver Station (B TS), Home Base Station (e.g., home evolved NodeB, or home Node B, HNB), Baseband Unit (B BU), Wireless Fidelity (Wi-Fi ) Access Point in (A P), Radio Relay Node, Radio Backhaul Node, Transmission Point (T P), Transmission and Reception Point (T RP), etc., including but not limited to, or network devices within a 5G mobile communication system, e.g., next generation NodeB (gNB) within an NR system, Transmission and Reception Point (T RP), or TP, or one or a group of antenna panels (including multiple antenna panels) of a base station within a 5G mobile communication system. Alternatively, the network device may be a gNB or a network node forming a transmission point, e.g., BBU or Distributed Unit (D U).

[0141] In some arrangements, the gNB may include a Central Unit (C U) and DU. The gNB may further include an Active Antenna Unit (A AU). The CU implements some functions of the gNB, and the DU implements some functions of the gNB. For example, the CU is responsible for processing non-real-time protocols and services, and implements the functions of the Radio Resource Control (R RC) layer and the Packet Data Convergence Protocol (P DCP) layer. The DU processes physical layer protocols and real-time services, and implements the Radio Link Control (R LC) layer, MAC layer, and physical (PIt plays a role in implementing the functions of the HY) layer. The AAU implements some physical layer processing functions, radio frequency processing, and functions related to active antennas. Information in the RRC layer is ultimately changed from or to information in the PHY layer. Therefore, in this architecture, upper layer signaling (e.g., RRC layer signaling) may also be considered to be transmitted by the DU or transmitted by the DU and the AAU. It may be understood that the network device may be a device including any one or more of the CU node, DU node, and AAU node. In addition, the CU may be classified as a network device within the RAN or the CU may be classified as a network device within the core network (C N). This is not limited in this application.

[0142] To facilitate understanding of the technical solutions in the embodiments of this application, with reference to FIGS. 1 and 2, two possible communication systems to which the beam usage method provided in the embodiments of this application is applicable are shown below.

[0143] FIG. 1 is a schematic diagram of a communication system according to an embodiment of this application. As shown in FIG. 1, the communication system includes at least one network device, such as network device 111 shown in FIG. 1. The communication system further includes at least one terminal device, such as terminal devices 121 and 122 shown in FIG. 1. The network device 111 can perform transmissions with the terminal devices 121 and 122 via beams.

[0144] Figure 2 is another schematic diagram of a communication system according to an embodiment of the present application. As shown in Figure 2, the communication system can include at least two network devices, for example, network device 211, network device 212, and network device 213 shown in Figure 2. The communication system further includes at least one terminal device, for example, terminal device 221 shown in Figure 2. The plurality of network devices can provide communication services to terminal device 221. For example, as shown in Figure 2, network device 211 can perform transmission with terminal device 221 via beam 1. Network device 212 can perform transmission with terminal device 221 via beam 2. Network device 213 can perform transmission with terminal device 221 via beam 3. In other words, all of the plurality of network devices can provide communication services to one terminal device.

[0145] To facilitate understanding of the technical solutions of the present application, some technical terms in the present application will be described below.

[0146] 1. Beam: A beam is a communication resource. The beam may be a wide beam, a narrow beam, or another type of beam. The beamforming technology may be beamforming technology or another technical means. Specifically, the beamforming technology may be digital beamforming technology, analog beamforming technology, or hybrid digital / analog beamforming technology. Different beams can be regarded as different resources.

[0147] In the NR protocol, a beam may be referred to as a spatial domain filter, spatial filter, spatial domain parameter, spatial parameter, spatial domain setting, spatial setting, quasi-collocation (Q CL) information, QCL assumption, QCL indication, etc. The beam may be indicated using the TCI-state parameter or may be indicated using a spatial relation parameter. Therefore, in this application, the beam may be replaced by a spatial domain filter, spatial filter, spatial domain parameter, spatial parameter, spatial domain setting, spatial setting, QCL information, QCL assumption, QCL indication, TCI-state (including uplink TCI-state and downlink TCI-state), spatial relation, etc. The above terms are also equivalent to each other. The beam may alternatively be replaced by another term for representing the beam. This is not limited in this application.

[0148] The beam used for transmitting a signal is a transmission beam (T x beam), spatial domain transmission filter, spatial transmission filter, spatial domain transmission parameter, spatial transmission parameter, spatial domain transmission setting, or spatial transmission setting. The transmission beam may be indicated using the TCI-state.

[0149] The 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, a spatial reception parameter, a spatial domain reception setting, or a spatial reception setting.

[0150] Each of the transmission beam and the reception beam may be indicated using any one of a spatial relationship, a TCI-state, and an SRS resource (the transmission beam for which SRS is used is indicated). Therefore, the transmission beam may be alternatively replaced with an SRS resource.

[0151] The transmission beam can mean the distribution of signal strengths formed in different directions in space after the signal is transmitted through the antenna. The reception beam can mean the distribution of signal strengths in different directions in space of the radio signal received through the antenna.

[0152] In addition, the beam may be a wide beam, a narrow beam, or another type of beam. The beamforming technique may be a beamforming technique or another technique. The beamforming technique may specifically be a digital beamforming technique, an analog beamforming technique, a hybrid digital beamforming technique, a hybrid analog beamforming technique, etc.

[0153] A beam generally corresponds to a resource. For example, when performing beam measurement, network devices measure different beams using different resources, and the terminal device feeds back the resource quality measured, so that the network device knows the quality of the corresponding beam. During data transmission, the beam information is also indicated using the resource corresponding to the beam information. For example, the network device uses the TCI field of DCI to indicate information regarding the PDSCH beam of the terminal device.

[0154] In a possible implementation form, a plurality of beams having the same or similar communication functions are regarded as one beam. One beam may include one or more antenna ports configured to transmit a data channel, a control channel, a sounding signal, etc. The one or more antenna ports forming the beam may also be regarded as one set of antenna ports.

[0155] 2. Transmission Configuration Indicator State (T CI-state) The TCI-state indicates a downlink beam. The network device can generate different beams indicating different transmission directions. In downlink data transmission, when transmitting data to the terminal device using the specified beam, the network device needs to notify the terminal device of information regarding the transmission beam used by the network device. In this way, the terminal device can receive the data transmitted by the network device using the receiving beam corresponding to the transmission beam. 3GPP Release 15 (3In the GPP R15 protocol or 3GPP R16 protocol, the network device uses the TCI field of DCI to instruct the terminal device about the related information of the transmission beam used by the network device. Specifically, the size of the TCI field is 3 bits, which can specifically indicate 8 different field values (code points). Each value of the TCI field corresponds to one TCI-state index, and the TCI-state index can uniquely identify one TCI-state. The TCI-state includes several parameters, and the related information of the transmission beam may be determined using these parameters. The TCI-state is configured by the network device for each terminal device. The structure of the TCI-state is shown as follows. TCI-State::=SEQUENCE { Tci-StateId TCI-StateId, qcl-Type1 QCL-Info, qcl-Type2 QCL-Info … } QCL-Info::=SEQUENCE { Cell ServCellIndex bwp-Id BWP-Id referenceSignal CHOICE { csi-rs NZP-CSI-RS-ResourceId, ssb SSB-Index }, qcl-Type ENUMERATED{typeA,typeB,typeC,typeD}, … }

[0156] Each TCI-state includes the index Tci-StateId of the TCI-state and two pieces of QCL-Info. Each piece of QCL-Info is the cell and bandwidth part to which the TCI-state is applied (BIt includes a cell field that respectively indicates [[ID=]], and a bwp-Id. Specifically, different QCL-Info may be configured for different cells or different BWPs of the same cell. QCL-Info further includes a reference signal that instructs to form a quasi-collocation relationship with a specific reference signal resource. In the 3GPP R15 protocol or the 3GPP R16 protocol, a beam is generally replaced by another term. For example, in both data transmission and channel measurement, a beam corresponds to a reference signal resource, and one beam corresponds to one reference signal resource. Therefore, instructing to form a QCL relationship with a specific reference signal resource in this specification essentially means forming a QCL relationship with a specific beam. The QCL relationship means that two reference signal resources (or two antenna ports, and there is also a one-to-one correspondence between the antenna port and the reference signal resource) have the same spatial parameter. Which specific spatial parameters are the same depends on the type of QCL-Info, that is, another field qcl-Type of QCL-Info. The value of qcl-Type can be four: {typeA, typeB, typeC, typeD}. In this specification, typeD is used as an example. In this specification, typeD instructs that two reference signal resources have the same spatial reception parameter information. Specifically, two beams have the same reception beam. Among the two pieces of QCL-Info included in the TCI-state, there is at most one piece of QCL-Info whose type is typeD.

[0157] In the following, an example is used to specifically describe how a network device uses the TCI-state to indicate the reception beam information of a data transmission beam to a terminal device based on the 3GPP R15 protocol or the 3GPP R16 protocol, including the configuration, activation, and indication of the TCI-state.

[0158] TCI-state Configuration: The network device configures multiple TCI-states for the terminal device using RRC signaling. These TCI-states each contain a piece of QCL-Info of type typeD. The network device may alternatively configure TCI-states that do not contain QCL-info of type typeD. However, these TCI-states do not indicate data transmission beams. Therefore, no further description is provided in this specification.

[0159] TCI-state Activation: After configuring multiple TCI-states, the network device further needs to activate 8 TCI-states using MAC CE. The 8 TCI-states have a one-to-one correspondence with the 8 values of the TCI field in the DCI. In other words, the 8 TCI-states corresponding to the 8 values of the TCI field in the DCI are determined using MAC CE.

[0160] Figure 3 is for activating the TCI state and is a schematic diagram of the structure of the MAC CE to which one embodiment of the present application is applicable. As shown in Figure 3, the fields T0 to T( N -2)×8 +7 each have an index from 0 to ( NIt is (-2)×8 + 7, corresponding to the TCI-state configured in the first step. Each field has a size of 1 bit and a value that can be 0 or 1. A value of 1 indicates that the TCI-state is activated, and a value of 0 indicates that the TCI-state is not activated. Theoretically, each MAC CE can have eight activated fields with a value of 1, and the values of the remaining fields are all 0. The TCI-states corresponding to the eight fields with a value of 1 are the eight TCI-states corresponding to the eight values of the TCI field in the DCI. For example, the minimum value (000) of the TCI field corresponds to the activated TCI-state with the minimum index in the MAC CE, and so on. The value and the TCI-state have a one-to-one correspondence. There are many types of MAC CEs. In addition to the MAC CE for activating the TCI-state, there are still a large number of MAC CEs for other purposes. This application only relates to the MAC CE for activating the TCI-state or a combination of TCI-states. Therefore, unless otherwise specified, the MAC CE in this application is such a MAC CE.

[0161] TCI-state Indication: The network device uses the TCI field in the DCI to indicate a specific TCI-state. For example, the value of the TCI field in the DCI sent by the network device to the terminal device is 000, which corresponds to 000 and indicates the TCI-state used for the data transmission beam. The reference signal included in the QCL-Info whose type is typeD in the TCI-state is the CSI-RS with index #1, indicating that the data transmission beam is the same as the reception beam corresponding to the CSI-RS with index #1. The reception beam corresponding to the CSI-RS with index #1 may be determined by the beam measurement procedure and is known to the terminal device. Therefore, the terminal device can determine the reception beam corresponding to the data transmission beam in order to receive data via the corresponding reception beam by using the specific value of the TCI field. It should be noted that the two description methods in this specification, namely TCI-state and TCI state, may be replaced with each other.

[0162] 3. spatial relation (indicating the uplink beam) In the current communication protocol, the transmission beam for uplink transmission is indicated using spatial relation. Spatial relation has a similar function to TCI-state and notifies the terminal device of the transmission beam used for uplink transmission.

[0163] Spatial relation also needs to be configured first by the RRC. The configuration structure of spatial relation is as follows. PUCCH-SpatialRelationInfo::= SEQUENCE{ pucch-SpatialRelationInfoId PUCCH-SpatialRelationInfoId, servingCellId ServCellIndex referenceSignal CHOICE{ ssb-Index SSB-Index, csi-RS-Index NZP-CSI-RS-ResourceId, srs SEQUENCE { resource SRS-ResourceId, uplinkBWP BWP-Id } } pucch-PathlossReferenceRS-Id PUCCH-PathlossReferenceRS-Id, p0-PUCCH-Id p0-PUCCH-Id, closedLoopIndex ENUMERATED { i0,i1}

[0164] The configuration structure includes identifiers of spatial relations, cell identifiers, target reference signal resources, path loss measurement reference signals, power control parameters, etc. The target reference signal resource (which can be any one of SRS, synchronization signal, and physical broadcast channel block (S SB), and CSI-RS) indicates the corresponding uplink beam. If spatial relation #1 is used for uplink transmission and spatial relation #1 includes target reference signal resource #2, it indicates that the transmission beam used for uplink transmission is the transmission beam or reception beam of the target reference signal. For example, if the target reference signal resource is the uplink resource SRS, it indicates that the transmission beam used for uplink transmission is the transmission beam of SRS (the transmission beam of SRS is known). In another example, the target reference signal resource is a downlink resource such as SSB or CSI-RS, which indicates that the transmission beam used for uplink transmission is the reception beam of SSB or the reception beam of CSI-RS (the reception beam of SSB or the reception beam of CSI-RS is known).

[0165] The network device can configure multiple spatial relations for the terminal device. Then, one of the spatial relations is activated for the corresponding data transmission using the MAC CE. The uplink transmission includes PUCCH transmission, SRS transmission, PUSCH transmission, etc., each of which requires the corresponding spatial relation. The spatial relation of the PUCCH is indicated using MAC CE signaling. The spatial relation of the SRS is also indicated using MAC CE signaling. The PUSCH is associated with a specific SRS during transmission and is transmitted using the spatial relation of the SRS.

[0166] 4. Antenna panel The panel is an antenna panel, which may be an antenna panel of a network device or an antenna panel of a terminal device. Generally, there is one or more antennas on one antenna panel. These antennas are arranged in an antenna array to perform beamforming to form analog beams. The antenna array can generate analog beams pointing in different directions. In other words, multiple analog beams may be formed on each antenna panel, and which analog beam is most suitable for use on the antenna panel may be determined by beam measurement. The terminal device may include multiple antenna panels. These antenna panels may be distributed at different positions and face different directions. Thereby, regardless of which direction the terminal device is facing, it can be ensured that at least one antenna panel faces the network device, and the terminal device can perform data transmission with the network device. The terminal device can make all antenna panels transmissible simultaneously. Alternatively, in order to reduce the power consumption of the terminal device, the terminal device can perform transmission using only one antenna panel at a time, and another unused antenna panel may be closed. Whether the antenna panel of the terminal device is in an active state or an inactive state generally needs to be notified to the network device. In other words, the terminal device and the network device generally need to exchange status information of the antenna panel.

[0167] In the embodiments of this application, unless otherwise specified, each antenna panel is an antenna panel of a terminal device. The antenna panel may be indicated using an antenna panel index, etc. In addition, the antenna panel may alternatively be implicitly indicated in another way. For example, the antenna panel may be an antenna port (e.g., CSI-RS port, SRS port, demodulation reference signal (D MRS) port, phase tracking reference signal (P TRS) port, CRS port, time-frequency tracking reference signal (TIt may alternatively be indicated using an RS port, or an SSB port, or an antenna port group, and resources (e.g., CSI-RS resources, SRS resources, DMRS resources, PTRS resources, cell reference signals (C It may alternatively be indicated using an RS resource, a TRS resource, or an SSB resource, or a resource group, and channels (e.g., PUCCH, PUSCH, or physical random access channel (P RACH), PDSCH, PDCCH, or physical broadcast channel (P BCH)) It may alternatively be indicated, and may alternatively be indicated via a beam, QCL, TCI-state, spatial relation, or an index, TCI-state, or spatial relation configured with QCL, and may alternatively be indicated via a beam group, QCL group, TCI-state group, or spatial relation group. In other words, the identifier of the antenna panel / panel in this application may be replaced with the identifier of the foregoing content.

[0168] 5. Common Beam Currently, separate beam indications are used for each channel. For example, the beam of PDCCH and the beam of PDSCH are indicated using TCI-state, and the beam of PUCCH and the beam of PUSCH are indicated using spatial relation. Each channel has its corresponding beam. In this application, a common beam is defined and is for all of a plurality of uplink and / or downlink channels.

[0169] The common beam is the same beam that is jointly used for a plurality of channels, a plurality of types of channels, a plurality of reference signals, and / or a plurality of types of reference signals. The plurality of channels or the plurality of types of channels include, but are not limited to, at least one of PDCCH, PDSCH, PUCCH, PUSCH, and PRACH. The reference signals include, but are not limited to, at least one of signals such as SSB, CSI-RS, DMRS, PTRS, TRS, and SRS.

[0170] For example, the common beam may specifically be classified into the following three types.

[0171] The joint common beam is for transmitting at least one uplink channel or reference signal and at least one downlink channel or reference signal, for example, both PDCCH, PDSCH, PUCCH, and PUSCH. The joint common beam may also be called the uplink and downlink common beam.

[0172] The uplink common beam is for transmitting all of a plurality of uplink channels and / or all of a plurality of types of uplink channels and / or all of one or more uplink reference signals, such as PUCCH, PUSCH, and SRS.

[0173] The downlink common beam is for transmitting all of a plurality of downlink channels and / or all of a plurality of types of downlink channels and / or all of one or more downlink reference signals, such as PDCCH, PDSCH, and CSI-RS.

[0174] Unless otherwise specified, the common beam described below may be any of the three types of common beams.

[0175] In this application, the network device can instruct the terminal device to use at least two common beams of the same type. For example, the first beam and the second beam in the following description are two common beams of the same type. For example, the first beam and the second beam are two uplink and downlink common beams, two uplink common beams, or two downlink common beams. The types of the first beam and the second beam should be specifically understood with reference to specific embodiments.

[0176] Form of the common beam: The common beam may be a newly defined structure (different from the existing structures of TCI-state and spatial relation). For example, the common beam includes related information for beam indication and a common beam identifier (I D), logical cell ID (cell ID), physical cell ID, bandwidth part ID, reference signal resource for determining the beam, QCL type, and one or more of uplink power control related parameters (for example, path loss measurement reference signal resource, p0, or closed loop index (closedLoopIndex)), but is not limited thereto.

[0177] Scope of application of the common beam: The common beam may be at the cell level. Specifically, one common beam is for the transmission of multiple channels within a cell. The common beam may be at the BWP level and may be for the transmission of multiple beams within one BWP. Alternatively, the common beam may be for cross-cell, that is, for the transmission of multiple channels within multiple cells. The multiple cells may be multiple cells within one band. Alternatively, the multiple cells may be multiple cross-band cells. The common beam is a control resource set (CIt may also be the level of ORESET). Specifically, the same common beam is used for all PDCCHs corresponding to the CORESET, and / or all PDSCHs scheduled by the PDCCH of the CORESET, and / or all PUSCHs scheduled by the PDCCH of the CORESET, and / or the PUCCH or PUSCH that transmits the feedback information (ACK or NACK) of the PDSCH scheduled by the PDCCH of the CORESET.

[0178] The common beam is also indicated using a TCI-state or a spatial relation. For example, the downlink common beam is indicated using a TCI-state. The uplink common beam is indicated using a spatial relation.

[0179] In other words, the common beam in the present application can be embodied in a protocol in the form of a TCI-state, a spatial relation, another parameter indicating an uplink transmission beam, or another parameter indicating a downlink transmission beam.

[0180] Compared with the common beam, the beams defined in the 3GPP R15 protocol and the 3GPP R16 protocol, such as TCI-state, spatial relation, or spatial filter, are usually called normal beams. The common beam is for single-channel transmission and not for simultaneously transmitting multiple channels or multiple reference signals. The network device needs to separately indicate a normal beam for each channel for transmission. However, in the technical solution of this application, the network device can indicate at least two common beams of the same type to the terminal device. The common beam is the same beam that is jointly used by multiple channels or multiple signals. Therefore, the corresponding beam may be collectively indicated for multiple channels or multiple signals. This efficiently performs beam indication, avoids complex indication commands, and saves additional overhead.

[0181] 6. The control resource set indicates a frequency-domain resource set for PDCCH transmission and is a parameter configuration unit for PDCCH transmission, including the related configuration parameters of the PDCCH.

[0182] 7. The control resource set group includes at least one control resource set. Each control resource set group corresponds to one group index (CORESETPool Index). The configuration parameters of the control resource set include the group index that indicates the control resource set group corresponding to the control resource set.

[0183] 8. The search space indicates a time domain position set for PDCCH transmission and a time - frequency position corresponding to a plurality of PDCCH resources within the search space. For example, the search space defines a PDCCH transmission cycle, that is, a cycle of PDCCH opportunities within the search space. The PDCCH may actually be understood as a detection point or detection period of the PDCCH in the time domain. For example, one time unit is a slot. One PDCCH transmission cycle includes P slots. Further, the search space indicates an offset value of the start slot of the PDCCH transmission cycle. For example, when the offset value is S, one PDCCH transmission period corresponds to one time window, the start slot number is S + P×n, the end slot number is S + P×(n + 1)-1, n is a positive integer, and P is a positive integer. Further, the search space indicates which consecutive slots within the PDCCH transmission cycle have PDCCH opportunities and which symbols within these slots have PDCCH opportunities.

[0184] In this application, the network device instructs the terminal device to use at least two beams of the same type. The at least two beams of the same type may be at least two downlink common beams, at least two uplink common beams, or at least two uplink and downlink common beams. When the at least two beams of the same type are downlink common beams, the at least two beams of the same type may be for transmitting PDCCH, PDSCH, and / or CSI-RS. When the at least two beams of the same type are uplink common beams, the at least two beams of the same type may be for transmitting PUCCH, PUSCH, and / or SRS. When the at least two beams of the same type are uplink and downlink common beams, the at least two beams of the same type may be for transmitting PDCCH, PDSCH, CSI-RS, PUCCH, PUSCH, and / or SRS. In the following embodiments, an example where the network device instructs the terminal device to use a first beam and a second beam is for explaining a solution in which the first communication device correctly applies the beams instructed by the network device for transmitting the corresponding channel or reference signal.

[0185] In the following, the technical solution of this application will be described with reference to specific embodiments.

[0186] FIG. 4 is a schematic diagram of an embodiment of a beam usage method according to an embodiment of this application. Refer to FIG. 4. The beam usage method includes the following steps.

[0187] 401: The first communication device determines a first beam and a second beam.

[0188] The first beam and the second beam are two beams instructed by the network device to the terminal device. For example, the first beam and the second beam are two beams instructed by the network device to the terminal device using DCI.

[0189] The first beam and the second beam are two common beams of the same type. In the embodiment shown in FIG. 4, the first beam and the second beam are two downlink common beams, or the first beam and the second beam are two uplink and downlink common beams. The first communication device includes a terminal device or a network device.

[0190] In some implementations, in this application, the first beam and the second beam may be beams used by the same site. Alternatively, the first beam and the second beam are beams used by different sites. For example, as shown in FIG. 5, in a scenario where a terminal device performs transmissions with multiple sites, Site 1 performs transmissions with the terminal device via the first beam, and Site 2 performs transmissions with the terminal device via the second beam.

[0191] Hereinafter, some methods for distinguishing between the first beam and the second beam will be described. Optionally, the first beam and the second beam include any one of the following.

[0192] 1. The first beam is the beam with the smaller index among the two beams, and the second beam is the beam with the larger index among the two beams, or the first beam is the beam with the larger index among the two beams, and the second beam is the beam with the smaller index among the two beams.

[0193] 2. The first beam is the beam corresponding to the smaller TCI field value among the two beams, and the second beam is the beam corresponding to the larger TCI field value among the two beams, or the first beam is the beam corresponding to the larger TCI field value within the two beams, and the second beam is the beam corresponding to the smaller TCI field value within the two beams.

[0194] Specifically, the network device uses the TCI field in the DCI to instruct the terminal device to beam. For example, the network device transmits two pieces of DCI. The DCI with a smaller value in the TCI field instructs the first beam, and the DCI with a larger value in the TCI field instructs the second beam. In other words, the value of the TCI field that instructs the first beam is smaller than the value of the TCI field that instructs the second beam. Alternatively, the DCI with a larger value in the TCI field instructs the first beam, and the DCI with a smaller value in the TCI field instructs the second beam. In other words, the value of the TCI field that instructs the first beam is larger than the value of the TCI field that instructs the second beam.

[0195] 3. The first beam is the beam with a higher configuration ranking among the two beams, and the second beam is the beam with a lower configuration ranking among the two beams, or the first beam is the beam with a lower configuration ranking among the two beams, and the second beam is the beam with a higher configuration ranking among the two beams.

[0196] Specifically, the configuration ranking of the beam may be understood as the arrangement ranking of the beam in the beam list configured by the network device for the terminal device. The beam list includes a plurality of beams of the same type configured by the network device for the terminal device, and specifically includes the first beam and the second beam. For example, the beam list is the beam list {beam 0, beam 2, beam 3}. The configuration ranking of beam 0 is the highest, and the configuration ranking of beam 3 is the lowest.

[0197] 4. The first beam belongs to the first beam set, and the second beam belongs to the second beam set. The first beam set and the second beam set are two beam sets of the same type configured by the network device for the terminal device.

[0198] Optionally, the first beam set is the beam set with the smaller index among two beam sets of the same type, and the second beam set is the beam set with the larger index among two beam sets of the same type. Alternatively, the first beam set is the beam set with the larger index among two beam sets of the same type, and the second beam set is the beam set with the smaller index among two beam sets of the same type. Alternatively, the first beam set is the beam set with the higher configuration ranking among two beam sets of the same type, and the second beam set is the beam set with the lower configuration ranking among two beam sets of the same type. Alternatively, the first beam set is the beam set with the lower configuration ranking among two beam sets of the same type, and the second beam set is the beam set with the higher configuration ranking among two beam sets of the same type.

[0199] 5. The first beam belongs to the first beam group, and the second beam belongs to the second beam group. The first beam group and the second beam group are two beam groups of the same type that are activated by the network device for the terminal device using MAC CE.

[0200] Optionally, the first beam group is the beam group with the smaller index among two beam groups of the same type, and the second beam group is the beam group with the larger index among two beam groups of the same type. Alternatively, the first beam group is the beam group with a higher activation ranking in the MAC CE among two beam groups of the same type, and the second beam group is the beam group with a lower activation ranking in the MAC CE among two beam groups of the same type. Alternatively, the first beam group is the beam group with a lower activation ranking in the MAC CE among two beam groups of the same type, and the second beam group is the beam group with a higher activation ranking in the MAC CE among two beam groups of the same type.

[0201] 6. The first beam is the beam indicated by the network device using the first TCI field in the DCI, and the second beam is the beam indicated by the network device using the second TCI field in the DCI. The first TCI field corresponds to the first beam group, and the second TCI field corresponds to the second beam group. The first communication device determines the first beam from the first beam group using the field value of the first TCI field and determines the second beam from the second beam group using the field value of the second TCI field. The second TCI field does not always exist, and whether the second TCI field exists in the DCI is determined by configuration information. For example, when two control resource set groups are configured, the second TCI field does not exist. In another example, the second TCI field exists when a single control resource set group is configured and two common beams of the same type are configured.

[0202] Specifically, the DCI includes a plurality of TCI fields. The TCI fields within the DCI are interpreted sequentially. The TCI field that is the first read can be regarded as the first TCI field within the DCI. The TCI field that is the second read can be regarded as the second TCI field within the DCI. The beam indicated by the first TCI field within the DCI is the first beam, and the beam indicated by the second TCI field within the DCI is the second beam.

[0203] Optionally, the first TCI field and the second TCI field within the DCI may be understood as two different sub-fields within the same TCI field, or the front part and the rear part of the bits within the same TCI field.

[0204] 7. The first beam is a beam corresponding to the first part of the field values within all the field values of the TCI field in the DCI transmitted by the network device, and the second beam is a beam corresponding to the second part of the field values within all the field values of the TCI field in the DCI transmitted by the network device. The first part of the field value first corresponds to a beam group, and the second part of the field value corresponds to a second beam group. The first communication device determines the first beam from the first beam group using the first part of the field value and determines the second beam from the second beam group using the second part of the field value.

[0205] Specifically, all field values of the TCI field within the DCI are divided into two parts, including the first part of the field value and the second part of the field value. Optionally, the first part of the field value is the part with a smaller field value, and the second part of the field value is the part with a larger field value. For example, the first part of the field value is from field value 0 to field value 3, and the second part of the field value is from field value 4 to field value 7. Alternatively, the first part of the field value is the field value with an even number, and the second part of the field value is the field value with an odd number. For example, the first part of the field value is even, and the second part of the field value is odd. Alternatively, the first part of the field value is the field value with an odd number, and the second part of the field value is the field value with an even number. In other words, if the value of the TCI field within one piece of DCI is the first part of the field value, it indicates that the DCI instructs to indicate the first beam. If the value of the TCI field within one piece of DCI is the second part of the field value, it indicates that the DCI instructs to indicate the second beam.

[0206] 8. The first beam and the second beam are two beams of the same type indicated by the network device using the same TCI field within the DCI. The first beam is the first beam among the two beams of the same type indicated by the same TCI field. The second beam is the second beam among the two beams of the same type indicated by the same TCI field. The first beam is the beam with a higher activation ranking within the MAC CE among the two beams of the same type, and the second beam is the beam with a lower activation ranking within the MAC CE among the two beams of the same type, or the first beam is the beam with a lower activation ranking within the MAC CE among the two beams of the same type, and the second beam is the beam with a higher activation ranking within the MAC CE among the two beams of the same type.

[0207] 9. The first beam is the beam indicated by the first DCI, and the second beam is the beam indicated by the second DCI.

[0208] In a possible implementation form, the first DCI is used by the network device to indicate the first beam to the terminal device, and the second DCI is used by the network device to indicate the second beam to the terminal device. The value of the first field in the first DCI indicates that the beam indicated by the first DCI is the first beam, and the value of the first field in the second DCI indicates that the beam indicated by the second DCI is the second beam.

[0209] The first DCI and the second DCI can be distinguished by using bits of a field or a part of a field within the DCI (e.g., the first or last bit of the TCI field). For example, if the value of the first bit of the TCI field within a piece of DCI is equal to 0, the DCI is the first DCI. If the value of the first bit of the TCI field within a piece of DCI is equal to 1, the DCI is the second DCI. In another example, if the value of a 1-bit field within a piece of DCI is equal to 0, the DCI is the first DCI. If the value of the 1-bit field is equal to 1, the DCI is the second DCI. In other words, bits of a field or a part of a field exist in the DCI, indicating that the DCI instructs the first beam or the second beam. If the value of the field of a part of the bits of the field is the first value, for example, if the value is equal to 0, it indicates that the DCI instructs the first beam, that is, the DCI is the first DCI. If the value of the field of a part of the bits of the field is the second value, for example, if the value is equal to 1, it indicates that the DCI instructs the second beam, that is, the DCI is the second DCI. In another example, if the value of a field or a part of the bits of a field within a piece of DCI is the first value, for example, if the value is equal to 0, the TCI field within the DCI corresponds to the first beam group. The first communication device determines the first beam from the first beam group by using the field value of the TCI field. In other words, the DCI is the first DCI. If the value of a field or a part of the bits of a field within a piece of DCI is the second value, for example, if the value is equal to 1, the TCI field within the DCI corresponds to the second beam group. The first communication device determines the second beam from the second beam group by using the field value of the TCI field. In other words, the DCI is the second DCI.

[0210] In the foregoing implementation form, the first beam group and the second beam group are two beam groups activated using a single MAC CE. Alternatively, the first beam group and the second beam group are two beam groups separately activated using two independent MAC CEs. The MAC CE includes a field. When the value of the field is the first value, for example, when the value is 0, it indicates that the beam group indicated by the MAC CE is the first beam group. When the value of the field is the second value, for example, when the value is 1, it indicates that the beam group indicated by the MAC CE is the second beam group.

[0211] In another possible implementation form, the first DCI and the second DCI can be distinguished using a control resource set group corresponding to the PDCCH. The first DCI is the DCI carried by the PDCCH corresponding to the first control resource set group within the two control resource set groups configured by the network device for the terminal device. The second DCI is the DCI carried by the PDCCH corresponding to the second control resource set group within the two control resource set groups.

[0212] Optionally, the first control resource set group is the control resource set group with a smaller group index among the two control resource set groups, and the second control resource set group is the control resource set group with a larger group index among the two control resource set groups. Alternatively, the first control resource set group is the control resource set group with a larger group index among the two control resource set groups, and the second control resource set group is the control resource set group with a smaller group index among the two control resource set groups.

[0213] In this application, in a multi-site transmission scenario, a network device can include multiple sites. In other words, a network device is a general term for multiple sites. Alternatively, a network device is part of multiple sites. For example, a network device is one of multiple sites. This is not specifically limited in this application.

[0214] Optionally, when the first communication device is a terminal device, the first beam and the second beam of 401 may be instructed by the second communication device to the first communication device. For details, refer to the relevant description in the following embodiments shown in FIG. 9.

[0215] 402: The first communication device determines the beam to be used for the first control resource set according to the first rule.

[0216] The beam to be used for the first control resource set is the first beam and / or the second beam.

[0217] Optionally, the first communication device determines the beam to be used for the first control resource set according to the first rule may be alternatively described as the first communication device determines the beam to be used for the first PDCCH set according to the first rule. The first PDCCH belongs to the PDCCH corresponding to the first control resource set. Hereinafter, an example in which the first communication device determines the beam to be used for the first control resource set according to the first rule is used to explain the technical solution of this application.

[0218] Hereinafter, 402 will be described with reference to some possible cases.

[0219] Case 1: When the network device configures two control resource set groups for the terminal device, and each control resource set group includes at least one control resource set, 402 is When the first control resource set belongs to the first control resource set group within the two control resource set groups, the first communication device determines that the beam used for the first control resource set is the first beam, or When the first control resource set belongs to the second control resource set group within the two control resource set groups, the first communication device determines that the beam used for the first control resource set is the second beam, Specifically includes.

[0220] In other words, based on Case 1, the first rule specifically includes that when the first control resource set belongs to the first control resource set group within the two control resource set groups, the beam used for the first control resource set is the first beam, or when the first control resource set belongs to the second control resource set group within the two control resource set groups, the beam used for the first control resource set is the second beam.

[0221] Hereinafter, two possible implementation forms of the first control resource set group and the second control resource set group will be described.

[0222] Implementation form 1: The first control resource set group is the control resource set group with a smaller group index among the two control resource set groups, and the second control resource set group is the control resource set group with a larger group index among the two control resource set groups.

[0223] Implementation form 2: The first control resource set Group is the control resource set group with a larger group index among the two control resource set groups, and the second control resource set group is the control resource set group with a smaller group index among the two control resource set groups.

[0224] Specifically, the process of the network device configuring two control resource set groups for the terminal device includes the network device configuring a plurality of control resource sets for the terminal device. Among the plurality of control resource sets, the first part of the control resource set corresponds to group index 0, and the second part of the control resource set corresponds to group index 1. In other words, the plurality of control resource sets are divided into two control resource set groups, and each control resource set group has a corresponding group index (CORESETPoon Index). In other words, control resource sets with the same group index can form a control resource set group. In other words, control resource sets within the same control resource set group correspond to the same group index. In other words, the network device implicitly configures two control resource set groups for the terminal device.

[0225] For example, the first control resource set group has a group index CORESETPool Index = 0, and the second control resource set group has a group index CORESETPool Index = 1. The configuration parameters of each control resource set include the group index indicating the control resource set group to which the control resource set belongs.

[0226] It should be noted that if the configuration parameters of the control resource set do not include the group index, the group index corresponding to the control resource set is equal to 0 by default. Therefore, the control resource set may also be regarded as a control resource set belonging to the control resource set group with a group index of 0.

[0227] Optionally, in a multi-site transmission scenario, the two control resource set groups can be understood as the control resource set groups respectively used by two sites. For example, as shown in FIG. 5, site 1 corresponds to the first control resource set group, and site 2 corresponds to the second control resource set group. Site 1 uses the first beam, and site 2 uses the second beam. According to the technical solution of the present application, the first communication device can determine that the first beam is used for the control resource set within the first control resource set group of site 1, and the second beam is used for the control resource set within the second control resource set group of site 2.

[0228] Case 2: The network device configures two control resource sets for the terminal device, and the two control resource sets are used for the repeated transmission of the control channel PDCCH. The fact that the two control resource sets are used for the repeated transmission of the PDCCH can be understood as follows: The PDCCH corresponding to the two control resource sets is the same PDCCH, or the content transmitted on the PDCCH corresponding to the two control resource sets is the same. For example, the terminal device can determine that the two control resource sets are used for the repeated transmission of the PDCCH by using the association relationship between the two control resource sets or the association relationship between the search spaces corresponding to the two control resource sets. Hereinafter, two possible implementation forms of 402 will be described.

[0229] Implementation form 1 402 is When the first control resource set is the control resource set with a smaller index among the two control resource sets, the first communication device determines that the beam used for the first control resource set is the first beam, or when the first control resource set is the control resource set with a larger index among the two control resource sets, the first communication device determines that the beam used for the first control resource set is the second beam. When the first control resource set is the control resource set with a smaller index among the two control resource sets, the first communication device determines that the beam used for the first control resource set is the first beam indicated by the network device to the terminal device, or when the first control resource set is the control resource set with a larger index among the two control resource sets, the first communication device determines that the beam used for the first control resource set is the second beam indicated by the network device to the terminal device, and the beam indicated by the network device to the terminal device includes the first beam and the second beam, to determine. When the first control resource set is the control resource set with a higher configuration ranking among the two control resource sets, the first communication device determines that the beam used for the first control resource set is the first beam, or when the first control resource set is the control resource set with a lower configuration ranking among the two control resource sets, the first communication device determines that the beam used for the first control resource set is the second beam, or When the first control resource set is the control resource set with a higher configuration ranking among the two control resource sets, the first communication device determines that the beam used for the first control resource set is the first beam indicated by the network device to the terminal device, or when the first control resource set is the control resource set with a lower configuration ranking among the two control resource sets, the first communication device determines that the beam used for the first control resource set is the second beam indicated by the network device to the terminal device, and the beam indicated by the network device to the terminal device includes the first beam and the second beam, to determine, specifically includes.

[0230] The configuration ranking of the control resource set can be understood as the arrangement ranking of the control resource sets in the control resource set list configured by the network device for the terminal device.

[0231] The above two control resource sets are used for the repeated transmission of the control channel, that is, the same content (for example, the same data) is transmitted on the control channels corresponding to the two control resource sets. Specifically, each of the two control resource sets can correspond to one or more pieces of search space. If there is a relationship between the search spaces corresponding to the two control resource sets respectively, it indicates that the two control resource sets are used for the repeated transmission of the control channel.

[0232] In other words, based on Implementation Form 1 of Case 2, the first rule is that if the first control resource set is the control resource set with a smaller index among the two control resource sets, the beam used for the first control resource set is the first beam, or if the first control resource set is the control resource set with a larger index among the two control resource sets, the beam used for the first control resource set is the second beam, or if the first control resource set is the control resource set with a higher configuration ranking among the two control resource sets, the beam used for the first control resource set is the first beam, or if the first control resource set is the control resource set with a lower configuration ranking among the two control resource sets, the beam used for the first control resource set is the second beam is specifically included.

[0233] Implementation Form 2 402 is When the first control resource set is the control resource set with a larger index among the two control resource sets, the first communication device determines that the beam used for the first control resource set is the first beam, or when the first control resource set is the control resource set with a smaller index among the two control resource sets, the first communication device determines that the beam used for the first control resource set is the second beam. When the first control resource set is the control resource set with a larger index among the two control resource sets, the first communication device determines that the beam used for the first control resource set is the first beam indicated by the network device to the terminal device, or when the first control resource set is the control resource set with a smaller index among the two control resource sets, the first communication device determines that the beam used for the first control resource set is the second beam indicated by the network device to the terminal device, where the beam indicated by the network device to the terminal device includes the first beam and the second beam, to determine. When the first control resource set is the control resource set with a lower configuration ranking among the two control resource sets, the first communication device determines that the beam used for the first control resource set is the first beam, or when the first control resource set is the control resource set with a higher configuration ranking among the two control resource sets, the first communication device determines that the beam used for the second control resource set is the second beam, or When the first control resource set is the control resource set with a lower configuration ranking among the two control resource sets, the first communication device determines that the beam used for the first control resource set is the first beam indicated to the terminal device by the network device, or when the first control resource set is the control resource set with a higher configuration ranking among the two control resource sets, the first communication device determines that the beam used for the second control resource set is the second beam indicated to the terminal device by the network device, and the beam indicated to the terminal device by the network device includes the first beam and the second beam, specifically including determining this.

[0234] In other words, based on Implementation Form 2 of Case 2, the first rule is When the first control resource set is the control resource set with a larger index among the two control resource sets, the beam used for the first control resource set is the first beam, or when the first control resource set is the control resource set with a smaller index among the two control resource sets, the beam used for the first control resource set is the second beam, or When the first control resource set is the control resource set with a lower configuration ranking among the two control resource sets, the beam used for the first control resource set is the first beam, or when the first control resource set is the control resource set with a higher configuration ranking among the two control resource sets, the beam used for the second control resource set is the second beam Specifically including this.

[0235] When Case 1 and Case 2 are satisfied, that is, when the network device configures two control resource set groups for the terminal device and the two control resource sets are used for repeated transmission of the control channel, it should be noted that there may be a conflict when the decision-making methods provided in Case 1 and Case 2 are used. For example, when the two control resource sets belong to the same control resource set group, according to the decision-making method provided in Case 1, the same beam should be used for the two control resource sets. However, according to the decision-making method provided in Case 2, the first beam and the second beam should be used for the two control resource sets respectively. In another example, when the two control resource sets belong to different control resource set groups, the control resource set with a smaller index among the two control resource sets enters the control resource set group with a larger group index. According to Embodiment 1 of Case 1, the second beam is used for the control resource set with a smaller index. However, according to Embodiment 1 of Case 2, the first beam should be used for the control resource set with a smaller index.

[0236] Therefore, hereinafter, in order to resolve the aforementioned conflict, any one of the following regulations for the solution of Case 2 is further proposed, so that the first communication device determines the beam used for the first control resource set according to the decision-making method provided in Case 1 or Case 2. Case 2 further includes any one of the following.

[0237] 1. When the network device configures two control resource set groups for the terminal device, the two control resource sets belong to different control resource set groups.

[0238] In other words, when the network device constitutes two control resource set groups and the two control resource sets are used for repeated transmission of the control channel, the two control resource sets must belong to different control resource set groups and cannot belong to the same control resource set group.

[0239] 2. When the network device constitutes two control resource set groups for the terminal device based on Embodiment 1 of Case 1 and Embodiment 1 of Case 2, the index of the control resource set in the first control resource set group among the two control resource set groups is smaller than the index of the control resource set in the second control resource set group among the two control resource set groups. Alternatively, the configuration ranking of the control resource set in the first control resource set group is before the configuration ranking of the control resource set in the second control resource set group.

[0240] The first control resource set group is the control resource set group with a smaller group index among the two control resource set groups, and the second control resource set group is the control resource set group with a larger group index among the two control resource set groups.

[0241] 3. When the network device constitutes two control resource set groups for the terminal device based on Embodiment 1 of Case 1 and Embodiment 2 of Case 2, the index of the control resource set in the first control resource set group among the two control resource set groups is larger than the index of the control resource set in the second control resource set group among the two control resource set groups. Alternatively, the configuration ranking of the control resource set in the first control resource set group is after the configuration ranking of the control resource set in the second control resource set group.

[0242] The first control resource set group is the control resource set group with a smaller group index among the two control resource set groups, and the second control resource set group is the control resource set group with a larger group index among the two control resource set groups.

[0243] 4. The use of two control resource sets for repeated transmission of the control channel satisfies the condition that the network device configures only one control resource set group for the terminal device.

[0244] In other words, when the network device configures only one control resource set group for the terminal device, the two control resource sets can be configured for repeated transmission of the control channel. In other words, when the network device configures two control resource set groups for the terminal device, the network device cannot configure two control resource sets for repeated transmission of the control channel.

[0245] Optionally, in a multi-site transmission scenario, the two control resource sets can be understood as the control resource sets used by two sites respectively. For example, as shown in FIG. 5, Site 1 uses a control resource set with a smaller index, and Site 2 uses a control resource set with a larger index. According to the technical solution of this application, the first communication device can determine the beams used for the control resource sets of different sites. For example, as shown in FIG. 5, in the technical solution of this application, the first communication device can determine that the first beam is used for the control resource set of Site 1 and the second beam is used for the control resource set of Site 2.

[0246] Case 3: The network device configures a control resource set group for the terminal device, the control resource set group includes one or more single-beam control resource sets, and when the first control resource set belongs to one of the one or more single-beam control resource sets, 402 specifically includes any one of the following.

[0247] 1. The first communication device determines that the beam used for the first control resource set is the first beam.

[0248] In this implementation form, when Case 3 is satisfied, the first communication device can default to determine that the beam used for the first control resource set is the first beam. In other words, the first communication device does not need to consider the beam currently used for the first control resource set, but directly determines by default that the first beam is used for the first control resource set.

[0249] 2. The first communication device determines that the beam used for the first control resource set is the second beam.

[0250] In this implementation form, when Case 3 is satisfied, the first communication device can default to determine that the beam used for the first control resource set is the second beam. In other words, the first communication device does not need to consider the beam currently used for the first control resource set, but directly determines by default that the second beam is used for the first control resource set.

[0251] 3. If the beam currently used in the first control resource set and the first beam belong to the same beam set, the first communication device updates the beam currently used in the first control resource set to the first beam, or if the beam currently used in the first control resource set and the second beam belong to the same beam set, the first communication device updates the beam currently used in the first control resource set to the second beam.

[0252] In this implementation, when Case 3 is satisfied, the first communication device determines the beam to be used in the updated first control resource set in consideration of the beam currently used in the first control resource set. If the beam currently used in the first control resource set and the first beam belong to the same beam set (for example, the beam set configured by the network device for the terminal device), the beam currently used in the first control resource set is updated to the first beam. If the beam currently used in the first control resource set and the second beam belong to the same beam set, the beam currently used in the first control resource set is updated to the second beam.

[0253] For example, the beam set is one of a plurality of beam sets including common beams of the same type configured by the network device for the terminal device. Different beam sets can correspond to different sites. In other words, the beams used by different sites are configured within different beam sets. In other words, the beams within the same beam set are the beams used by the same site. Therefore, when the beam currently used in the first control resource set and the first beam belong to the same beam set, the same site is preferably used to transmit the PDCCH corresponding to the first control resource set. Therefore, the beam currently used in the first control resource set is updated to the first beam. The same explanation applies to the second beam. Details are not provided one by one again in this specification.

[0254] In other words, based on Case 3, the first rule specifically includes that when the beam currently used in the first control resource set and the first beam belong to the same beam set, the beam currently used in the first control resource set is updated to the first beam, or when the beam currently used in the first control resource set and the second beam belong to the same beam set, the beam currently used in the first control resource set is updated to the second beam. Specifically, this is included.

[0255] Optionally, the conditions for using the method shown in Case 3 are as follows: The first control resource set is not used for repeated transmission of the control channel. In other words, the first control resource set is not combined with another control resource set for repeated transmission of the control channel.

[0256] Case 4: The network device configures one control resource set group for the terminal device. The control resource set group includes one or more multi-beam control resource sets. When the first control resource set belongs to one of the one or more multi-beam control resource sets, 402 specifically includes that the first communication device determines that the beams used for the first control resource set are the first beam and the second beam. In other words, both the first beam and the second beam are used for the first control resource set for transmission.

[0257] In other words, based on Case 4, the first rule specifically includes that the beams used for the first control resource set are the first beam and the second beam.

[0258] Case 5: The first communication device receives the first MAC CE from the second communication device. The first MAC CE includes the index of the first control resource set. 402 The first MAC CE is a first type of MAC CE, the first MAC CE includes first beam indication information, and when the first beam indication information indicates a first beam, the first communication device determines that, at any moment within a first period, the first common beam within two common beams of the same type that become effective at any moment is used for a first control resource set, where the first period is a time interval between the effective time point of the beam indicated by the first MAC CE and the effective time point of the beam indicated by a second MAC CE, the second MAC CE indicates the beam used for the first control resource set, and the second MAC CE is the most recently received MAC CE by the first communication device after the first MAC CE is received. The first MAC CE is a first type of MAC CE, the first MAC CE includes first beam indication information, and when the first beam indication information indicates a second beam, the first communication device determines that, at any moment within a first period, the second common beam within two common beams of the same type that become effective at any moment is used for a first control resource set, or The first MAC CE is a second type of MAC CE, the first MAC CE includes second beam indication information and third beam indication information, the second beam indication information indicates a first beam, the third beam indication information indicates a second beam, and the first communication device determines that, at any moment within a first period, two common beams of the same type that become effective at any moment are used for a first control resource set. Specifically includes.

[0259] In Case 5, when the first MAC CE is of the first type of MAC CE, the first MAC CE further includes first beam indication information, and the first beam indication information indicates one beam. If the first MAC CE transmitted by the second communication device and received by the first communication device is of the first type of MAC CE and the first MAC CE includes an index of the first control resource set, the first communication device determines that the first control resource set is a single-beam control resource set, that is, determines that a single beam is used for the first control resource set. The second communication device can indicate, via the first beam indication information, which beam is specifically used, that is, whether the first beam or the second beam is used. The beam indicated by the first beam indication information needs to be specified to be the same as one of the two currently used beams (i.e., the first beam and the second beam). For example, if the two currently used beams (i.e., the first beam and the second beam) respectively correspond to TCI state 1 and TCI state 2, the TCI state corresponding to the beam indicated by the first beam indication information is either TCI state 1 or TCI state 2. If the beam indicated by the first beam indication information is the same as the currently used first beam, the first communication device determines that the first beam should continue to be used for the first control resource set. If the beam indicated by the first beam indication information is the same as the currently used second beam, the first communication device determines that the second beam should continue to be used for the first control resource set.

[0260] corresponding to the first beam and the second beam statusNote that after the change, the beam used for the first control resource set also changes accordingly. For example, according to the above method, the first communication device determines that the first beam is used for the first control resource set. After the TCI state corresponding to the first beam changes from TCI state 1 to TCI state 3, the beam corresponding to TCI state 3 rather than the beam corresponding to TCI state 1 should be used for the first control resource set. In other words, the first MAC CE indicates the beam, which first communication does not notify the device to always continue using the beam, but based on which of the two currently active beams (i.e., the first beam and the second beam) is the same as the beam, notifies the first communication device to continue using one of the two common beams. Specifically, if the beam indicated by the first MAC CE is the same as the first common beam of the two currently active common beams, the terminal device uses the first common beam of the two common beams that are active at that moment at any instant within the subsequent first period. If the beam indicated by the first MAC CE is the same as the second common beam of the two currently active common beams, the terminal device uses the second common beam of the two common beams that are active at that moment at any instant within the subsequent first period.

[0261] When the first MAC CE is the second type of MAC CE, the first MAC CE further includes second beam indication information and third beam indication information. The second beam indication information indicates one beam, and the third beam indication information indicates one beam. The two beams indicated by the two pieces of beam indication information included in the first MAC CE can be specified to be the same as the two currently used beams (i.e., the first beam and the second beam). The first communication device may alternatively ignore the beam indication information in the first MAC CE, because in the common beam mode, the beam of the first control resource set does not need to be indicated in the MAC CE, but the common beams (i.e., the first beam and the second beam) indicated by the second communication device are directly used. In other words, the second communication device When configuring a common beam for the first communication device (i.e., the current mode is the common beam mode), the first communication device can directly ignore the two beams indicated by the received first MAC CE. Alternatively, the second communication device When indicating two beams (i.e., the first beam and the second beam) for the first communication device, the first communication device can directly ignore the two beams indicated by the received first MAC CE. Optionally, it may be alternatively specified that the two beams indicated by the second beam indication information and the third indication information are directly used in the first control resource set. Here, it is not required that the two beams indicated by the second beam indication information and the third indication information be the same as the two currently active common beams.

[0262] Based on Case 3 to Case 5, optionally, the embodiment shown in FIG. 4 further includes 402a. 402a may be performed before 402.

[0263] 402a: The first communication device determines the type of the first control resource set. The type of the first control resource set includes a single-beam control resource set or a multi-beam control resource set.

[0264] The number of beams used for the single-beam control resource set is 1, and the number of beams used for the multi-beam control resource set is greater than 1. For example, the number of beams used for the multi-beam control resource set is 2.

[0265] Hereinafter, several possible implementation forms in which the first communication device determines the type of the first control resource set will be described.

[0266] Implementation form 1: The first communication device determines the type of the first control resource set based on the configuration parameters in the first control resource set.

[0267] Specifically, the network device configures the first control resource set for the terminal device, and the configuration parameters of the first control resource set include information indicating the type of the first control resource set. The first communication device can use the configuration parameters to determine the type of the first control resource set. For example, the configuration parameters may be for configuring that the first control resource set is a single-beam control resource set or a multi-beam control resource set.

[0268] Implementation form 2: The first communication device receives the first instruction information from the second communication device. The first instruction information indicates whether a plurality of beams are permitted to be used for the first control resource set, or indicates the type of the first control resource set. The first instruction information is included in the configuration information transmitted by the network device to the terminal device.

[0269] In Embodiment 2, the first communication device may be a terminal device, and the second communication device may be a network device.

[0270] Specifically, the network device configures a first control resource set for the terminal device. The configuration parameters of the first control resource set can be determined by referring to the indication information from the network device, and it is indicated that one or more beams can be used for transmission in the first control resource set. The network device can use additional first indication information to indicate whether a plurality of beams are permitted to be used in the first control resource set. If a plurality of beams are permitted to be used in the first control resource set, it indicates that the first control resource set is a multi-beam control resource set. If a plurality of beams are not permitted to be used in the first control resource set, it indicates that the first control resource set is a single-beam control resource set. The terminal device can use the first indication information to determine the type of the first control resource set. For example, the first indication information may be for configuring so that a single beam or a plurality of beams are used in the first control resource set. Further, when the first indication information indicates that a single beam is used in the first control resource set, the network device can use the second indication information to further indicate to the terminal device that the first beam or the second beam is used in the first control resource set. The second indication information may be indicated using RRC signaling, MAC CE signaling, or DCI signaling. Alternatively, the first indication information can directly indicate that the first beam, the second beam, or both the first beam and the second beam are used in the first control resource set.

[0271] Embodiment 3: The first communication device determines the type of the first control resource set based on the number of beams currently used in the first control resource set.

[0272] Specifically, when the number of beams currently used in the first control resource set is 1, the first communication device can determine that the type of the first control resource set is a single-beam control resource set. When the number of beams currently used in the first control resource set is greater than 1, the first communication device can determine that the type of the first control resource set is a multi-beam control resource set.

[0273] Embodiment 4: The first communication device receives a third MAC CE from the second communication device. The third MAC CE indicates the type of the first control resource set, or the third MAC CE indicates that one or two beams are used in the first control resource set, or the third MAC CE indicates the beam of the first control resource set. The beam used in the first control resource set includes the first beam and / or the second beam. In other words, the third MAC CE indicates that the first beam, the second beam, or both the first beam and the second beam are used in the first control resource set.

[0274] The first communication device may be a terminal device, and the second communication device may be a network device.

[0275] Specifically, the third MAC CE can include one or more 1-bit fields. Each 1-bit field corresponds to one control resource set and indicates the type of the control resource set or indicates that one or two beams are used in the control resource set. The control resource sets respectively corresponding to the one or more 1-bit fields include the first control resource set. The third MAC CE can include one or more 2-bit fields. Each 2-bit field corresponds to one control resource set and indicates that the first beam, the second beam, or two beams (i.e., the first beam and the second beam) are used in the control resource set.

[0276] For example, the third MAC CE includes three 2-bit fields corresponding to three control resource sets within one bandwidth part (B WP). Each 2-bit field corresponds to one control resource set and indicates that the first beam, the second beam, or both beams (i.e., the first beam and the second beam) are used for the control resource set. The control resource sets corresponding to the three 2-bit fields respectively include the first control resource set. Specifically, the first 2-bit field corresponds to the control resource set with the minimum index, the second 2-bit field corresponds to the control resource set ranked second in index, and so on.

[0277] In another example, the third MAC CE includes twelve 2-bit fields corresponding to twelve control resource sets within one cell. Each 2-bit field corresponds to one control resource set and indicates that the first beam, the second beam, or both beams (i.e., the first beam and the second beam) are used for the control resource set. The control resource sets corresponding to the twelve 2-bit fields respectively include the first control resource set. Specifically, the first 2-bit field corresponds to the control resource set with the smallest index, the second 2-bit field corresponds to the control resource set ranked second in index, and so on. Every fourth 2-bit field within the twelve 2-bit fields is located within the same 8-bit byte (i.e., a row within the third MAC CE), that is, the twelve 2-bit fields occupy a total of three 8-bit bytes. Optionally, the number of 8-bit bytes within the third MAC CE for carrying the 2-bit fields may be alternatively adjusted based on the number of control resource sets actually configured for the cell. For example, if the number of control resource sets configured for the cell is less than 4, the third MAC CE corresponding to the cell includes only one 8-bit byte for carrying the 2-bit fields. If the number of control resource sets configured for the cell is greater than 4 and less than 8, the third MAC CE corresponding to the cell includes two 8-bit bytes for carrying the 2-bit fields. If the number of control resource sets configured for the cell is greater than 8 and does not exceed 12, the third MAC CE corresponding to the cell includes only three 8-bit bytes for carrying the 2-bit fields. If the number of control resource sets configured for the cell exceeds 12, the third MAC CE corresponding to the cell includes more than three 8-bit bytes for carrying the 2-bit fields, and the specific number of bytes is equal to the ceiling of dividing the number of control resource sets by 4. For example, if there are 14 control resource sets configured for the cell and they are for carrying 2-bit fields, the number of 8-bit bytes included in the third MAC CE corresponding to the cell is equal to the ceiling of 14 / 4, that is, equal to 4.

[0278] Implementation form 5: The first communication device receives the first MAC CE from the second communication device, and the first communication device determines the type of the first control resource set based on the type of the first MAC CE.

[0279] The first MAC CE is a first type of MAC CE or a second type of MAC CE. The first MAC CE includes an index of the first control resource set.

[0280] Specifically, the first communication device can use the received first MAC CE to determine the type of the first control resource set. For example, if the first MAC CE received by the first communication device from the second communication device is a first type of MAC CE and the first MAC CE includes an index of the first control resource set, the first communication device determines that the first control resource set is a single-beam control resource set, that is, it is determined that a single beam, for example, the first beam, is used for the first control resource set. If the first MAC CE received by the first communication device from the second communication device is a second type of MAC CE and the first MAC CE includes an index of the first control resource set, the first communication device determines that the first control resource set is a multi-beam control resource set, that is, it is determined that two beams, for example, the first beam and the second beam, are used for the first control resource set.

[0281] According to the foregoing method, the network device can send the first MAC CE to the terminal device to indicate or switch the type of the first control resource set, or to indicate or switch the number of beams used for the first control resource set.

[0282] Optionally, the embodiment shown in FIG. 4 further includes 403, and 403 may be performed after 402.

[0283] 403: The first communication device transmits the PDCCH corresponding to the first control resource set via the beam used for the first control resource set.

[0284] Specifically, after determining the beam used for the first control resource set, the first communication device can transmit the PDCCH corresponding to the first control resource set via the beam.

[0285] For example, as shown in FIG. 5, the beam used for the first control resource set is the first beam, and the terminal device can transmit the PDCCH corresponding to the first control resource set at Site 1 via the first beam.

[0286] For example, as shown in FIG. 5, the beam used for the first control resource set is the second beam, and the terminal device can transmit the PDCCH corresponding to the first control resource set at Site 2 via the second beam.

[0287] For example, as shown in FIG. 5, the beams used for the first control resource set are the first beam and the second beam. Site 1 can transmit the PDCCH corresponding to the first control resource set to the terminal device via the first beam, and Site 2 can transmit the PDCCH corresponding to the first control resource set, that is, repeatedly transmit the PDCCH corresponding to the first control resource set to the terminal device via the second beam.

[0288] In the embodiment shown in FIG. 4, it should be noted that the example of the first communication device determining the beam used for the first control resource set is for explaining the technical solution of the present application. The process of determining the beam used for another control resource set is the same. For example, as shown in FIG. 5, in a multi-site transmission scenario, the terminal device determines that the beam used for the first control resource set is the first beam and the beam used for the second control resource set is the second beam. The terminal device can perform the transmission of the PDCCH corresponding to the first control resource set at site 1 via the first beam and perform the transmission of the PDCCH corresponding to the second control resource set at site 2 via the second beam. In this way, multi-site transmission is implemented. In other words, according to the technical solution of the present application, the first communication device can correctly apply two beams of the same type indicated by the network device to the corresponding PDCCH to implement multi-site transmission.

[0289] In the embodiment of the present application, the first communication device determines the first beam and the second beam. The first beam and the second beam are beams of the same type, and the first beam and the second beam are two beams indicated by the network device to the terminal device. The first communication device determines the beam used for the first control resource set according to the first rule. The beam used for the first control resource set is the first beam and / or the second beam. It can be found that according to the technical solution of the present application, the first communication device can determine the beam used for the first control resource set from the first beam and the second beam according to the first rule. In this way, the first communication device can correctly apply the beam indicated by the network device to the PDCCH corresponding to the control resource set so that the PDCCH corresponding to the control resource set is transmitted via the correct beam, and the communication transmission performance can be improved.

[0290] In the embodiment shown in FIG. 4, it should be noted that the example where the network device instructs the terminal device to use two beams of the same type is for explaining the technical solution of this application. When the network device instructs the terminal device to use one beam, for the multi-beam control resource set, the first communication device can determine that the beam is not used for the multi-beam control resource set, the first communication device can determine to use the beam as the first beam used for the multi-beam control resource set, or the first communication device can determine to use the beam as the second beam used for the multi-beam control resource set.

[0291] It should be noted that in the embodiment shown in FIG. 4, the network device instructs the terminal device to use two beams of the same type, namely the first beam and the second beam. In the communication protocol, it can be specified that the first beam and the second beam are not applied to a specific control resource set. For example, the first beam and the second beam should not be applied to the single-beam control resource set. In other words, in the case of the single-beam control resource set, the network device can further indicate the corresponding beam to the terminal device.

[0292] FIG. 6 is a schematic diagram of another embodiment of the beam usage method according to an embodiment of this application. Please refer to FIG. 6. The beam usage method includes the following steps.

[0293] 601: The first communication device determines the first beam and the second beam.

[0294] The first beam and the second beam are two beams instructed by the network device to the terminal device. For example, the first beam and the second beam are two beams instructed by the network device to the terminal device using DCI.

[0295] The first beam and the second beam are two common beams of the same type. In the embodiment shown in FIG. 6, the first beam and the second beam are two uplink common beams, or the first beam and the second beam are two uplink and downlink common beams.

[0296] The first communication device includes a terminal device or a network device.

[0297] In some implementations, the first beam and the second beam may be beams used by the same site. Alternatively, the first beam and the second beam are beams used by different sites.

[0298] For some ways to distinguish the first beam from the second beam, refer to the related description of the embodiment shown in FIG. 4. Details are not repeatedly described herein.

[0299] In this application, in a multi-site transmission scenario, the network device can include multiple sites. In other words, the network device is a general term for multiple sites. Alternatively, the network device is part of multiple sites. For example, the network device is one of multiple sites. This is not specifically limited in this application.

[0300] Optionally, when the first communication device is a terminal device, the first beam and the second beam of 601 may be indicated to the first communication device by the second communication device. For details, refer to the related description in the following embodiment shown in FIG. 9.

[0301] 602: The first communication device determines the beam used for the first PUCCH according to the first rule.

[0302] The beam used for the first PUCCH is the first beam and / or the second beam.

[0303] In the following, 602 will be described with reference to some possible cases.

[0304] Case A: When the first PUCCH is a single-beam PUCCH, 602 specifically includes any one of the following.

[0305] 1. The first communication device determines that the beam used for the first PUCCH is the first beam.

[0306] In this implementation, when Case A is satisfied, the first communication device can, by default, determine that the beam used for the first PUCCH is the first beam. In other words, the first communication device does not need to consider the beam currently used for the first PUCCH, but directly determines by default that the first beam is used for the first PUCCH.

[0307] 2. The first communication device determines that the beam used for the first PUCCH is the second beam.

[0308] In this implementation, when Case A is satisfied, the first communication device can, by default, determine that the beam used for the first PUCCH is the second beam. In other words, the first communication device does not need to consider the beam currently used for the first PUCCH, but directly determines by default that the second beam is used for the first PUCCH.

[0309] 3. When the beam currently used for the first PUCCH and the first beam belong to the same beam set, the first communication device updates the beam currently used for the first PUCCH to the first beam, or when the beam currently used for the first PUCCH and the second beam belong to the same beam set, the first communication device updates the beam currently used for the first PUCCH to the second beam.

[0310] In this implementation form, when Case A is satisfied, the first communication device determines the beam to be used for the updated first PUCCH in consideration of the beam currently used for the first PUCCH. When the beam currently used for the first PUCCH and the first beam belong to the same beam set, the beam currently used for the first PUCCH is updated to the first beam. When the beam currently used for the first PUCCH and the second beam belong to the same beam set, the beam currently used for the first PUCCH is updated to the second beam.

[0311] In other words, based on Case A, the first rule is that the beam used for the first PUCCH is the first beam, the beam used for the first PUCCH is the second beam, or when the beam currently used for the first PUCCH and the first beam belong to the same beam set, the beam currently used for the first PUCCH is updated to the first beam, or when the beam currently used for the first PUCCH and the second beam belong to the same beam set, the beam currently used for the first PUCCH is updated to the second beam is specifically included.

[0312] Case B: When the first PUCCH is a multi-beam PUCCH, 602 specifically includes that the first communication device determines that the beams used for the first PUCCH are the first beam and the second beam. In other words, the first communication device can determine to transmit the multi-beam PUCCH via the first beam and the second beam.

[0313] In other words, based on Case B, the first rule specifically includes that the beams used for the first PUCCH are the first beam and the second beam.

[0314] Case C: When the network device configures two control resource set groups for the terminal device, 602 Specifically includes that when the first PUCCH is associated with the first control resource set group within the two control resource set groups or with the group index of the first control resource set group, the first communication device determines that the beam used for the first PUCCH is the first beam; or when the first PUCCH is associated with the second control resource set group within the two control resource set groups or with the group index of the second control resource set group, the first communication device determines that the beam used for the first PUCCH is the second beam. For example, the first PUCCH being associated with the group index of the first control resource set group includes that the configuration parameters of the first PUCCH include the group index of the first control resource set group.

[0315] The first control resource set group is the control resource set group with a smaller group index among the two control resource set groups, and the second control resource set group is the control resource set group with a larger group index among the two control resource set groups. Alternatively, the first control resource set group is the control resource set group with a larger group index among the two control resource set groups, and the second control resource set group is the control resource set group with a smaller group index among the two control resource set groups.

[0316] Regarding the configuration process in which the network device configures two control resource set groups for the terminal device, refer to the relevant description of 402 in the embodiment shown in FIG. 4. Details are not repeatedly described herein.

[0317] In other words, based on case C, the first rule is that if the first PUCCH is associated with the first control resource set group within two control resource set groups, or with the group index of the first control resource set group, the beam used for the first PUCCH is the first beam, or if the first PUCCH is the second control resource set group or the group index of the second control resource set group within two control resource set groups associated with, the beam used for the first PUCCH is the second beam is specifically included.

[0318] Optionally, in a multi-site transmission scenario, the two control resource set groups can be understood as the control resource set groups used by two sites respectively. For example, as shown in FIG. 5, site 1 corresponds to the first control resource set group, and site 2 corresponds to the second control resource set group. Site 1 uses the first beam, and site 2 uses the second beam. If the first PUCCH is associated with the group index of the first control resource set group, the first PUCCH can be understood as the PUCCH between site 1 and the terminal device. Therefore, according to the technical solution of the present application, the first communication device can determine that the first beam is used for the first PUCCH. If the first PUCCH is associated with the group index of the second control resource set group, the first PUCCH can be understood as the PUCCH between site 2 and the terminal device. Therefore, according to the technical solution of the present application, the first communication device can determine that the second beam is used for the first PUCCH.

[0319] Case D: The first communication device receives the fourth MAC CE from the second communication device, and the fourth MAC CE includes the index of the first PUCCH. Step 602 is The fourth MAC CE is a first type of MAC CE. When the fourth MAC CE includes fourth beam indication information and the fourth beam indication information indicates a first beam, the first communication device determines that, at any moment within a second period, the first common beam within two common beams of the same type that become valid at any moment is used for the first PUCCH. The second period is a time interval between the time when the beam indicated by the fourth MAC CE becomes valid and the time when the beam indicated by the fifth MAC CE becomes valid. The fifth MAC CE indicates the beam used for the first PUCCH and is the MAC CE most recently received by the first communication device after the fourth MAC CE is received. When the fourth MAC CE is a first type of MAC CE, the fourth MAC CE includes fourth beam indication information, and the fourth beam indication information indicates a second beam, the first communication device determines that, at any moment within the second period, the second common beam within two common beams of the same type that become valid at any moment is used for the first PUCCH, or When the fourth MAC CE is a second type of MAC CE, the fourth MAC CE includes fifth beam indication information and sixth beam indication information, the fifth beam indication information indicates a first beam, and the sixth beam indication information indicates a second beam, the first communication device specifically includes determining that, at any moment within the second period, two common beams of the same type that become valid at any moment are used for the first PUCCH.

[0320] Specifically, when the fourth MAC CE is the first type of MAC CE, the fourth MAC CE further includes fourth beam indication information, and the fourth beam indication information indicates one beam. When the fourth MAC CE transmitted by the second communication device and received by the first communication device is the first type of MAC CE and the fourth MAC CE includes the index of the first PUCCH, the first communication device determines that the first PUCCH is a single-beam PUCCH, that is, determines that a single beam is used for the first PUCCH. The second communication device can use the fourth beam indication information to indicate which beam is specifically used, that is, whether the first beam or the second beam is used. The beam indicated by the fourth beam indication information can be specified to be the same as one of the two currently used beams (that is, the first beam and the second beam). For example, when the two currently used beams (that is, the first beam and the second beam) respectively correspond to TCI state 1 and TCI state 2, the TCI state corresponding to the beam indicated by the fourth beam indication information is either TCI state 1 or TCI state 2. When the beam indicated by the fourth beam indication information is the same as the currently used first beam, the first communication device determines that the first beam should continue to be used for the first PUCCH. When the beam indicated by the fourth beam indication information is the same as the currently used second beam, the first communication device determines that the second beam should continue to be used for the first PUCCH.

[0321] Corresponding to the first beam and the second beam statusIt should be noted that after the change, the beam used for the first PUCCH also changes accordingly. For example, according to the above method, the first communication device determines that the first beam is used for the first PUCCH. After the TCI state corresponding to the first beam changes from TCI state 1 to TCI state 3, the beam corresponding to state 3 rather than the beam corresponding to TCI state 1 is used for the first PUCCH. In other words, the fourth MAC CE indicates the beam, which does not notify the first communication device to always continue using the beam, but rather notifies the first communication device to continue using one of the two common beams based on which of the two currently active beams is the same as the beam. Specifically, if the beam indicated by the fourth MAC CE is the same as the first common beam of the two currently active common beams, the terminal device uses the first common beam of the two common beams that are active at that moment at any instant within the subsequent second period. If the beam indicated by the fourth MAC CE is the same as the second common beam of the two currently active common beams, the terminal device uses the second common beam of the two common beams that are active at that moment at any instant within the subsequent second period.

[0322] When the fourth MAC CE is the second type of MAC CE, the fourth MAC CE further includes fifth beam indication information and sixth beam indication information. The fifth beam indication information indicates one beam, and the sixth beam indication information indicates one beam. It can be specified that the two beams indicated by the two pieces of beam indication information included in the fourth MAC CE need to be the same as the two currently used beams (i.e., the first beam and the second beam). The first communication device may alternatively ignore the beam indication information in the fourth MAC CE because in the common beam mode, the beam of the PUCCH does not need to be indicated in the MAC CE, second communicationThis is because the common beams (i.e., the first beam and the second beam) indicated by the device are directly used. In other words, when the second communication device configures the common beam for the first communication device (i.e., the current mode is the common beam mode), first communication the device can directly ignore the two beams indicated by the received fourth MAC CE. Alternatively, when the second communication device indicates two common beams (i.e., the first beam and the second beam) for the first communication device, the first communication device can directly ignore the two beams indicated by the received fourth MAC CE. Optionally, it may be alternatively specified that the two beams indicated by the fifth beam indication information and the sixth indication information are directly used for the first PUCCH. Here, it is not necessary that the two beams indicated by the fifth beam indication information and the sixth indication information are the same as the two currently active common beams.

[0323] Based on Case A, Case B, or Case D, optionally, the embodiment shown in FIG. 6 further includes 602a. 602a may be performed before 602.

[0324] 602a: The first communication device determines the type of the first PUCCH. The type of the first PUCCH includes a single-beam PUCCH or a multi-beam PUCCH. The first communication device may be a terminal device.

[0325] The number of beams used for the single-beam PUCCH is 1, and the number of beams used for the multi-beam PUCCH is greater than 1. For example, the number of beams used for the multi-beam PUCCH is 2.

[0326] Hereinafter, several possible implementations in which the first communication device determines the type of the first PUCCH will be described.

[0327] Implementation form 1: The first communication device determines the type of the first PUCCH based on the configuration parameters in the first PUCCH.

[0328] Specifically, the network device configures the first PUCCH for the terminal device, and the configuration parameters of the first PUCCH include information indicating the type of the first PUCCH. The first communication device can use the configuration parameters to determine the type of the first PUCCH. For example, the configuration parameters may be for configuring that the first PUCCH is a single-beam PUCCH or a multi-beam PUCCH.

[0329] Implementation form 2: The first communication device receives first indication information from the second communication device. The first indication information indicates whether a plurality of beams are permitted to be used for the first PUCCH, or indicates the type of the first PUCCH.

[0330] For example, the first communication device is a terminal device, and the second communication device is network a device. The first indication information may be included in the configuration information transmitted by the network device to the terminal device.

[0331] In implementation form 2, the first communication device may be a terminal device, and the second communication device may be a network device.

[0332] Specifically, the network device configures a first PUCCH for the terminal device. The configuration parameters of the first PUCCH can be determined with reference to the indication information from the network device, indicating that one or more beams can be used for the transmission of the first PUCCH. The network device can use the first indication information to indicate whether a plurality of beams are permitted to be used for the first PUCCH. If a plurality of beams are permitted to be used for the first PUCCH, it indicates that the first PUCCH is a multi-beam PUCCH. If a plurality of beams are not permitted to be used for the first PUCCH, it indicates that the first PUCCH is a single-beam PUCCH. The terminal device can use the first indication information to determine the type of the first PUCCH. For example, the first indication information may be for configuring a single beam or a plurality of beams to be used for the first PUCCH. Further, when the first indication information indicates that a single beam is used for the PUCCH, the network device can use the second indication information to further indicate to the terminal device that the first beam or the second beam is to be used. The second indication information may be indicated using RRC signaling, MAC CE signaling, or DCI signaling. Alternatively, the first indication information can indicate that the first beam, the second beam, or two beams (i.e., the first beam and the second beam) are to be used for the first PUCCH.

[0333] Implementation form 3: The first communication device determines the type of the first PUCCH based on the number of beams currently used for the first PUCCH.

[0334] Specifically, when the number of beams currently used for the first PUCCH is 1, the first communication device can determine that the type of the first PUCCH is a single-beam PUCCH. When the number of beams currently used for the first PUCCH is greater than 1, the first communication device can determine that the type of the first PUCCH is a multi-beam PUCCH.

[0335] Embodiment 4: The first communication device receives the sixth to sixth MAC CE from the second communication device The sixth MAC CE indicates the type of one or more PUCCHs. The sixth MAC CE indicates that one or two beams are used for one or more PUCCHs, or the sixth MAC CE indicates that the first beam, the second beam, or two beams (i.e., the first beam and the second beam) are used for one or more PUCCHs. One or more PUCCHs include the first PUCCH.

[0336] Specifically, the sixth MAC CE can include one or more 1-bit fields. Each 1-bit field corresponds to one PUCCH and indicates the type of the PUCCH or indicates that one or two beams are used for the PUCCH. The sixth MAC CE can include one or more 2-bit fields. Each 2-bit field corresponds to one PUCCH and indicates that the first beam, the second beam, or two beams (i.e., the first beam and the second beam) are used for the PUCCH.

[0337] For example, the sixth MAC CE is one of B W inside PIt includes three 2-bit fields corresponding to three PUCCHs. Each 2-bit field corresponds to one PUCCH and indicates that the first beam, the second beam, or two beams (i.e., the first beam and the second beam) are used for the PUCCH. Specifically, the first 2-bit field corresponds to the PUCCH with the smallest index, the second 2-bit field corresponds to the PUCCH with the second-ranked index, and so on.

[0338] In another example, the sixth MAC CE includes twelve 2-bit fields corresponding to twelve PUCCHs within one cell. Each 2-bit field corresponds to one PUCCH and indicates that the first beam, the second beam, or both beams (i.e., the first beam and the second beam) are used for the PUCCH. Specifically, the first 2-bit field corresponds to the PUCCH with the smallest index, the second 2-bit field corresponds to the PUCCH with the second-ranked index, and so on. Every fourth 2-bit field among the twelve 2-bit fields is located within the same 8-bit byte, that is, the twelve 2-bit fields occupy a total of three 8-bit bytes. Optionally, the number of 8-bit bytes within the sixth MAC CE for carrying the 2-bit fields may alternatively be adjusted based on the number of PUCCHs actually configured in the cell. For example, if the number of PUCCHs configured in the cell is less than 4, the sixth MAC CE corresponding to the cell includes only one 8-bit byte for carrying the 2-bit fields. If the number of PUCCHs configured in the cell is greater than 4 and less than 8, the sixth MAC CE corresponding to the cell includes two 8-bit bytes for carrying the 2-bit fields. If the number of PUCCHs configured in the cell is greater than 8 and does not exceed 12, the sixth MAC CE corresponding to the cell includes only three 8-bit bytes for carrying the 2-bit fields. If the number of PUCCHs configured in the cell exceeds 12, the sixth MAC CE corresponding to the cell includes more than three 8-bit bytes for carrying the 2-bit fields, and the specific number of bytes is equal to the ceiling of dividing the number of PUCCHs by 4. For example, the cell is configured with 14 PUCCHs for carrying 2-bit fields, and the number of 8-bit bytes included in the sixth MAC CE corresponding to the cell is equal to the ceiling of 14 / 4, that is, 4.

[0339] Implementation form 5: The first communication device receives the fourth MAC CE from the second communication device, and the first communication device determines the type of the first PUCCH based on the type of the fourth MAC CE.

[0340] The fourth MAC CE is a first type of MAC CE or a second type of MAC CE. The fourth MAC CE includes an index of the first PUCCH.

[0341] Specifically, the first communication device can determine the type of the first PUCCH based on the type of the received fourth MAC CE. For example, if the fourth MAC CE transmitted by the second communication device and received by the first communication device is the first type of MAC CE and the fourth MAC CE includes an index of the first PUCCH, the first communication device determines that the first PUCCH is a single-beam PUCCH, that is, it determines that a single beam, for example, the first beam, is used for the first PUCCH. If the fourth MAC CE transmitted by the second communication device and received by the first communication device is the second type of MAC CE and the fourth MAC CE includes an index of the first PUCCH, the first communication device determines that the first PUCCH is a multi-beam PUCCH, that is, it determines that two beams are used for the first PUCCH. For example, the first beam and the second beam are used for the first PUCCH.

[0342] According to the foregoing method, the network device can transmit the fourth MAC CE to the terminal device to instruct or switch the type of the first PUCCH, or to instruct or switch the number of beams used for the first PUCCH.

[0343] Optionally, the embodiment shown in FIG. 6 further includes 603, and 603 may be performed after 602.

[0344] 603: The first communication device transmits the first PUCCH via the beam used for the first PUCCH.

[0345] Specifically, after determining the beam used for the first PUCCH, the first communication device can transmit the first PUCCH via the beam.

[0346] For example, as shown in FIG. 5, the beam used for the first PUCCH is the first beam, and the terminal device can transmit the first PUCCH with Site 1 via the first beam.

[0347] For example, as shown in FIG. 5, the beam used for the first PUCCH is the second beam, and the terminal device can transmit the first PUCCH with Site 2 via the second beam.

[0348] It should be noted that in the embodiment shown in FIG. 6, the example of the first communication device determining the beam used for the first PUCCH is for explaining the technical solution of this application. The process of determining the beam used for another PUCCH is the same. For example, as shown in FIG. 5, in a multi-site transmission scenario, the terminal device determines that the beam used for the first PUCCH is the first beam and the beam used for the second PUCCH is the second beam. The terminal device can transmit the first PUCCH with Site 1 via the first beam and transmit the second PUCCH with Site 2 via the second beam. In this way, multi-site transmission is implemented. In other words, according to the technical solution of this application, the first communication device can correctly apply two beams of the same type indicated by the network device to the corresponding PUCCH to implement multi-site transmission.

[0349] In an embodiment of the present application, a first communication device determines a first beam and a second beam. The first beam and the second beam are beams of the same type, and the first beam and the second beam are two beams instructed by a network device to a terminal device. The first communication device determines a beam used for a first PUCCH according to a first rule. The beam used for the first PUCCH is the first beam and / or the second beam. According to the technical solution of the present application, it can be found that the first communication device can determine the beam used for the first PUCCH from the first beam and the second beam according to the first rule. In this way, the first communication device can correctly apply the beam instructed by the network device to the first PUCCH in order to transmit the first PUCCH via the correct beam to improve the communication transmission performance.

[0350] FIG. 7 is a schematic diagram of another embodiment of a beam usage method according to an embodiment of the present application. Please refer to FIG. 7. The beam usage method includes the following steps.

[0351] 701: The first communication device determines a first beam and a second beam.

[0352] The first beam and the second beam are two common beams of the same type. In the embodiment shown in the figure, the first beam and the second beam are two uplink common beams, or the first beam and the second beam are two uplink and downlink common beams. The first communication device includes a terminal device or a network device. 8

[0353] ​In some implementations, the first beam and the second beam may be beams used by the same site. Alternatively, the first beam and the second beam are beams used by different sites. For example, as shown in FIG. 5, in a scenario where a terminal device communicates with a plurality of sites, Site 1 communicates with the terminal device via the first beam, and Site 2 communicates with the terminal device via the second beam.

[0354] For some possible ways to distinguish the first beam and the second beam, refer to the relevant description of 401 in the embodiment shown in FIG. 4. Details are not repeatedly described herein.

[0355] Optionally, when the first communication device is a terminal device, the first beam and the second beam of 701 may be instructed by the second communication device to the first communication device. For details, refer to the relevant description in the following embodiment shown in FIG. 9.

[0356] 702: The second communication device transmits third instruction information to the first communication device.

[0357] The third instruction information instructs any one of the following: the first beam is used for the first shared channel, the second beam is used for the first shared channel, the first beam and the second beam are used for the first shared channel, or the first beam and the second beam are not used for the first shared channel.

[0358] Specifically, the first communication device is a terminal device, and the second communication device is a network device. The network device forms two beams of the same type for the terminal device. The network device can flexibly instruct the terminal device to transmit a first shared channel via the first beam and / or the second beam. For example, as shown in FIG. 5, in a multi-site transmission scenario, Site 1 transmits the first shared channel to the terminal device via the first beam, and Site 2 transmits the first shared channel via the second beam. It can be understood that Site 1 and Site 2 perform repeated transmission of the same data to the terminal device. In this case, the network device can configure the terminal device to transmit the first shared channel via the first beam and the second beam. For example, if Site 1 is configured to transmit the first shared channel to the terminal device via the first beam, the transmission of the first shared channel by the terminal device via the first beam can be configured by the network device.

[0359] In the present application, in a multi-site transmission scenario, the network device can include a plurality of sites. In other words, the network device is a general term for a plurality of sites. Alternatively, the network device is part of a plurality of sites. For example, the network device is one of a plurality of sites. This is not specifically limited in the present application.

[0360] Optionally, when the first shared channel is a PDSCH, the first beam and the second beam are two downlink common beams, or two uplink and downlink common beams.

[0361] Optionally, when the first shared channel is a PUSCH, the first beam and the second beam are two uplink common beams, or two uplink and downlink common beams.

[0362] In some implementation forms, the third indication information is carried by downlink control information DCI.

[0363] Specifically, the third indication information may be a field within the DCI. Four different values of the field can respectively indicate the following four cases: The first beam is used for the first shared channel, the second beam is used for the first shared channel, the first beam and the second beam are used for the first shared channel, and the first beam and the second beam are not used for the first shared channel.

[0364] For example, when the value of the third indication information is "00", the third indication information indicates that the first beam is used for the first shared channel. When the value of the third indication information is "01", the third indication information indicates that the second beam is used for the first shared channel. When the value of the third indication information is "10", the third indication information indicates that the first beam and the second beam are used for the first shared channel. When the value of the third indication information is "11", the third indication information indicates that the first beam and the second beam are not used for the first shared channel.

[0365] It should be noted that the above is only an example of the value of the third indication information and is not a limitation to this application. For example, when the value of the third indication information is "01", the third indication information indicates that the first beam is used for the first shared channel. When the value of the third indication information is "00", the third indication information indicates that the second beam is used for the first shared channel. When the value of the third indication information is "10", the third indication information indicates that the first beam and the second beam are used for the first shared channel. When the value of the third indication information is "11", the third indication information indicates that the first beam and the second beam are not used for the first shared channel. This is not specifically limited in this application. In addition, the length of the third indication information may also be greater than 2 bits.

[0366] Optionally, the embodiment shown in FIG. 7 further includes 703, and 703 may be performed after 702.

[0367] 703: The first communication device transmits the first shared channel via the first beam, the first communication device transmits the first shared channel via the second beam, or the first communication device transmits the first shared channel via the first beam and the second beam.

[0368] Note that in the embodiment shown in FIG. 7, the example of the first communication device determining the beam used for the first shared channel is for explaining the technical solution of this application. The process of determining the beam used for another shared channel is the same. For example, as shown in FIG. 5, in a multi-site transmission scenario, the terminal device determines that the beam used for the first shared channel is the first beam and the beam used for the second shared channel is the second beam. The terminal device can transmit the first shared channel with site 1 via the first beam and transmit the second shared channel with site 2 via the second beam. In this way, multi-site transmission is implemented. In other words, according to the technical solution of this application, the first communication device can correctly apply two beams of the same type indicated by the network device to the corresponding shared channel to implement multi-site transmission.

[0369] In an embodiment of the present application, the first communication device determines a first beam and a second beam. The first beam and the second beam are beams of the same type, and the first beam and the second beam are two beams instructed by a network device to a terminal device. The first communication device receives third instruction information from the second communication device. The third instruction information instructs any one of the following: the first beam is used for a first shared channel, the second beam is used for the first shared channel, the first beam and the second beam are used for the first shared channel, or the first beam and the second beam are not used for the first shared channel. According to the technical solution of the present application, it can be found that the first communication device can determine the beam used for the first shared channel based on the third instruction information. In this way, the first communication device can correctly apply the beam instructed by the network device to the first shared channel in order to transmit the first shared channel through the correct beam to improve the communication transmission performance.

[0370] FIG. 8 is a schematic diagram of another embodiment of a beam usage method according to an embodiment of the present application. Refer to FIG. 8. The beam usage method includes the following steps.

[0371] 801: The first communication device determines a first beam and a second beam.

[0372] The first beam and the second beam are two beams instructed by a network device to a terminal device. For example, the first beam and the second beam are two beams instructed by a network device to a terminal device using DCI.

[0373] The first beam and the second beam are two common beams of the same type. In the embodiment shown in FIG. 4, the first beam and the second beam are two uplink common beams, or the first beam and the second beam are two uplink and downlink common beams. The first communication device includes a terminal device or a network device.

[0374] In some implementations, the first beam and the second beam may be beams used by the same site. Alternatively, the first beam and the second beam are beams used by different sites. For example, as shown in FIG. 5, in a scenario where a terminal device performs transmissions with multiple sites, Site 1 performs transmission with the terminal device via the first beam, and Site 2 performs transmission with the terminal device via the second beam.

[0375] For some ways to distinguish the first beam from the second beam, refer to the relevant description of the embodiment shown in FIG. 4. Details are not repeatedly described herein.

[0376] In this application, in a multi-site transmission scenario, the network device can include multiple sites. In other words, the network device is a general term for multiple sites. Alternatively, the network device is part of multiple sites. For example, the network device is one of multiple sites. This is not specifically limited in this application.

[0377] Optionally, when the first communication device is a terminal device, the first beam and the second beam of 801 may be instructed by the second communication device to the first communication device. For details, refer to the relevant description in the following embodiment shown in FIG. 9.

[0378] 802: The first communication device determines the beam to be used for the first SRS resource according to the first rule.

[0379] The beam used for the first SRS resource is the first beam and / or the second beam.

[0380] In the following, 802 will be described with reference to several possible cases.

[0381] Case A: When the network device configures two SRS resource sets of the same type for the terminal device, 802 If the first SRS resource belongs to the corresponding SRS resource in the first SRS resource set within the two SRS resource sets of the same type, the first communication device determines that the beam used for the first SRS resource is the first beam, or if the first SRS resource belongs to the corresponding SRS resource in the second SRS resource set within the two SRS resource sets of the same type, the first communication device determines that the beam used for the first SRS resource is the second beam is specifically included.

[0382] In a possible implementation, the first SRS resource set is the SRS resource set with a smaller index among the two SRS resource sets of the same type, the second SRS resource set is the SRS resource set with a larger index among the two SRS resource sets of the same type, or the first SRS resource set is the control resource set with a higher configuration ranking among the two SRS resource sets of the same type, and the second SRS resource set is the control resource set with a lower configuration ranking among the two SRS resource sets of the same type.

[0383] In another possible implementation, the first SRS resource set is the SRS resource set with a larger index among two SRS resource sets of the same type, and the second SRS resource set is the SRS resource set with a smaller index among two SRS resource sets of the same type, or the first SRS resource set is the control resource set with a lower configuration ranking among two SRS resource sets of the same type, and the second SRS resource set is the control resource set with a higher configuration ranking among two SRS resource sets of the same type.

[0384] Specifically, the types of SRS resource sets include codebook, Noncodebook, antennaSwitch, and beamManagement.

[0385] In other words, based on Case A, the first rule is when the first SRS resource belongs to the corresponding SRS resource in the first SRS resource set within two SRS resource sets of the same type, the beam used for the first SRS resource is the first beam, or when the first SRS resource belongs to the corresponding SRS resource in the second SRS resource set within two SRS resource sets of the same type, the beam used for the first SRS resource is the second beam which specifically includes.

[0386] Case B: When the network device configures one SRS resource set for the terminal device and the first SRS resource belongs to the SRS resource set, 802 specifically includes any one of the following.

[0387] 1. The first communication device determines that the beam used for the first SRS resource is the first beam.

[0388] In this implementation form, when case B is satisfied, the first communication device can, by default, determine that the beam used for the first SRS source is the first beam. In other words, the first communication device does not need to consider the beam currently used for the first SRS resource, but can directly determine, by default, that the first beam is used for the first SRS resource.

[0389] 2. The first communication device determines that the beam used for the first SRS resource is the second beam.

[0390] In this implementation form, when case B is satisfied, the first communication device can, by default, determine that the beam used for the first SRS source is the second beam. In other words, the first communication device does not need to consider the beam currently used for the first SRS resource, but can directly determine, by default, that the second beam is used for the first SRS resource.

[0391] 3. When the beam currently used for the SRS resource set and the first beam belong to the same beam set, the first communication device updates the beam currently used for the first SRS resource to the first beam, or when the beam currently used for the SRS resource set and the second beam belong to the same beam set, the first communication device updates the beam currently used for the first SRS resource to the second beam.

[0392] In this implementation form, when case B is satisfied, the first communication device determines the beam used for the updated first SRS source in consideration of the beam currently used for the first SRS resource. When the beam currently used for the first SRS source and the first beam belong to the same beam set, the beam currently used for the first SRS source is updated to the first beam. When the beam currently used for the first SRS source and the second beam belong to the same beam set, the beam currently used for the first SRS source is updated to the second beam.

[0393] For example, a beam set is one of a plurality of beam sets that includes a common beam of the same type configured by a network device for a terminal device. Different beam sets can correspond to different sites. In other words, the beams used by different sites are configured within different beam sets. Stated differently, the beams within the same beam set are the beams used by the same site. Therefore, when the beam currently used for the first SRS resource and the first beam belong to the same beam set, the same site is preferably used to transmit the first SRS resource. Therefore, the beam currently used for the first SRS resource is updated to the first beam. The same explanation applies to the second beam. Details are not provided one by one again in this specification.

[0394] 4. The first communication device receives a first RRC message or a first MAC CE from the second communication device. The first RRC message or the first MAC CE indicates that one or both of the first beam and the second beam are used for the first SRS resource. The first communication device uses the first RRC message or the first MAC CE to determine the beam used for the first SRS resource.

[0395] When the first RRC message or the first MAC CE indicates that one of the first beam and the second beam is used for the first SRS resource, the first communication device either considers by default that the first beam is used for the first SRS resource or considers by default that the second beam is used for the first SRS resource. Further, the second communication device can use the first RRC message or the first MAC CE to further instruct the first communication device that the first beam or the second beam is used for the first SRS resource. Alternatively, the second communication device can use another RRC message or MAC CE to instruct the first communication device that the first beam or the second beam is used for the first SRS resource.

[0396] 5. The first communication device receives a second RRC message or a second MAC CE from the second communication device. The second RRC message or the second MAC CE indicates that the first beam, the second beam, or both the first beam and the second beam are used for the first SRS resource. The first communication device uses the second RRC message or the second MAC CE to determine the beam used for the first SRS resource.

[0397] Note that the five ways of Case B are not alternatively limited to Case B. Specifically, when the network device configures a plurality of SRS resource sets for the terminal device, the first communication device can also use the foregoing method to determine the beam of each SRS resource.

[0398] In other words, based on Case B, the first rule is that the beam used for the first SRS resource is the first beam, the beam used for the first SRS resource is the second beam, If the beam currently used in the SRS resource set and the first beam belong to the same beam set, the beam currently used in the first SRS resource is updated to the first beam, or if the beam currently used in the SRS resource set and the second beam belong to the same beam set, the beam currently used in the first SRS resource is updated to the second beam. The first RRC message or the first MAC CE indicates that one or both of the first beam and the second beam are used for the first SRS resource. When the first RRC message or the first MAC CE indicates that one of the first beam and the second beam is used for the first SRS resource, it is considered by default that the first beam is used for the first SRS resource, or it is considered by default that the second beam is used for the first SRS resource. When the first RRC message or the first MAC CE indicates that both of the first beam and the second beam are used for the first SRS resource, the first beam and the second beam are used for the first SRS resource, or The second RRC message or the second MAC CE indicates that the first beam, the second beam, or both the first beam and the second beam are used for the first SRS resource, and the beam indicated by the second RRC message or the second MAC CE is used for the first SRS resource. Specifically includes this.

[0399] Optionally, the embodiment shown in FIG. 8 further includes 803, and 803 may be performed after 802.

[0400] 803: The first communication device transmits the first SRS resource via the beam used for the first SRS resource.

[0401] For example, the first communication device determines that the first beam is used for the first SRS resource. When the first communication device is a terminal device, the terminal device transmits SRS on the first SRS resource via the first beam. When the first communication device is a network device, the network device receives SRS on the first SRS resource via the first beam.

[0402] For example, the first communication device determines that the second beam is used for the first SRS resource. When the first communication device is a terminal device, the terminal device transmits SRS on the first SRS resource via the second beam. When the first communication device is a network device, the network device receives SRS on the first SRS resource via the second beam.

[0403] In an embodiment of the present application, the first communication device determines the first beam and the second beam. The first beam and the second beam are of the same type of beam, and the first beam and the second beam are two beams instructed by the network device to the terminal device. The first communication device determines the beam used for the first SRS resource according to the first rule. The beam used for the first SRS resource is the first beam and / or the second beam. According to the technical solution of the present application, it can be found that the first communication device can determine the beam used for the first SRS resource according to the first rule. In this way, the first communication device can correctly apply the beam instructed by the network device for the transmission of the corresponding reference signal, and improve the communication transmission performance.

[0404] The present application further provides another embodiment. This embodiment is the same as the embodiment shown in FIG. 8. Hereinafter, with reference to steps 8001 to 8003, the technical solution in this embodiment will be described. The method provided in this embodiment includes the following steps.

[0405] 8001: The first communication device determines a first beam and a second beam.

[0406] The first beam and the second beam are two beams instructed by the network device to the terminal device. For example, the first beam and the second beam are two beams instructed by the network device to the terminal device using DCI.

[0407] The first beam and the second beam are two common beams of the same type. book In an embodiment, the first beam and the second beam are two uplink common beams, or the first beam and the second beam are two uplink and downlink common beams. The first communication device includes a terminal device or a network device.

[0408] In some implementations, the first beam and the second beam may be beams used by the same site. Alternatively, the first beam and the second beam are beams used by different sites. For example, as shown in FIG. 5, in a scenario where the terminal device performs transmissions with multiple sites, Site 1 performs transmissions with the terminal device via the first beam, and Site 2 performs transmissions with the terminal device via the second beam.

[0409] For some methods of distinguishing the first beam from the second beam, refer to the relevant description of the embodiment shown in FIG. 4. Details are not repeatedly described herein.

[0410] In this application, in a multi-site transmission scenario, the network device can include multiple sites. In other words, the network device is a general term for multiple sites. Alternatively, the network device is part of multiple sites. For example, the network device is one of multiple sites. This is not specifically limited in this application.

[0411] Optionally, when the first communication device is a terminal device, the first beam and the second beam in step 8001 may be instructed by the second communication device to the first communication device. For details, please refer to the relevant descriptions in the following embodiments shown in FIG. 9.

[0412] 8002: The first communication device determines the beam to be used for the first CSI-RS resource according to the first rule.

[0413] The beam to be used for the first CSI-RS resource is the first beam and / or the second beam.

[0414] In the following, 8002 will be described with reference to some possible cases.

[0415] Case A: When the network device configures two CSI-RS resource sets for the terminal device with the same CSI-RS resource configuration, 8002 When the first CSI-RS resource belongs to the corresponding CSI-RS resource in the first CSI-RS resource set within the two CSI-RS resource sets, the first communication device determines that the beam to be used for the first CSI-RS resource is the first beam, or when the first CSI-RS resource belongs to the corresponding CSI-RS resource in the second CSI-RS resource set within the two CSI-RS resource sets, the first communication device determines that the beam to be used for the first CSI-RS resource is the second beam Specifically includes.

[0416] In a possible implementation form, the first CSI-RS resource set is the CSI-RS resource set with a smaller index among the two CSI-RS resource sets, and the second CSI-RS resource set is the CSI-RS resource set with a larger index among the two CSI-RS resource sets, or the first CSI-RS resource set is the CSI-RS resource set with a higher configuration ranking among the two CSI-RS resource sets, and the second CSI-RS resource set is the CSI-RS resource set with a lower configuration ranking among the two CSI-RS resource sets.

[0417] In another possible implementation form, the first CSI-RS resource set is the CSI-RS resource set with a larger index among the two CSI-RS resource sets, and the second CSI-RS resource set is the CSI-RS resource set with a smaller index among the two CSI-RS resource sets, or the first CSI-RS resource set is the CSI-RS resource set with a lower configuration ranking among the two CSI-RS resource sets, and the second CSI-RS resource set is the CSI-RS resource set with a higher configuration ranking among the two CSI-RS resource sets.

[0418] Specifically, the types of CSI-RS resource sets include codebook, non-codebook, antenna switching, and beam management.

[0419] In other words, based on Case A, the first rule is that when the first CSI-RS resource belongs to the corresponding CSI-RS resource in the first CSI-RS resource set within the two CSI-RS resource sets, the beam used for the first CSI-RS resource is the first beam, or when the first CSI-RS resource belongs to the corresponding CSI-RS resource in the second CSI-RS resource set within the two CSI-RS resource sets, the beam used for the first CSI-RS resource is the second beam Specifically includes this.

[0420] Case B: When the network device configures one CSI-RS resource set for the terminal device and the first CSI-RS resource belongs to the CSI-RS resource set, 8002 specifically includes any one of the following.

[0421] 1. The first communication device determines that the beam used for the first CSI-RS resource is the first beam.

[0422] In this implementation form, when Case B is satisfied, the first communication device can, by default, determine that the beam used for the first CSI-RS source is the first beam. In other words, the first communication device does not need to consider the beam currently used for the first CSI-RS resource, but directly determines by default that the first beam is used for the first CSI-RS resource.

[0423] 2. The first communication device determines that the beam used for the first CSI-RS resource is the second beam.

[0424] In this implementation form, when Case B is satisfied, the first communication device can, by default, determine that the beam used for the first CSI-RS source is the second beam. In other words, the first communication device does not need to consider the beam currently used for the first CSI-RS resource, but directly determines by default that the second beam is used for the first CSI-RS resource.

[0425] 3. When the beam currently used in the CSI-RS resource set and the first beam belong to the same beam set, the first communication device updates the beam currently used in the first CSI-RS resource to the first beam, or when the beam currently used in the CSI-RS resource set and the second beam belong to the same beam set, the first communication device updates the beam currently used in the first CSI-RS resource to the second beam.

[0426] In this implementation form, when Case B is satisfied, the first communication device determines the beam to be used in the updated first CSI-RS resource in consideration of the beam currently used in the first CSI-RS resource. When the beam currently used in the first CSI-RS source and the first beam belong to the same beam set, the beam currently used in the first CSI-RS source is updated to the first beam. When the beam currently used in the first CSI-RS source and the second beam belong to the same beam set, the beam currently used in the first CSI-RS source is updated to the second beam.

[0427] For example, the beam set is one of a plurality of beam sets including common beams of the same type configured by the network device for the terminal device. Different beam sets can correspond to different sites. In other words, the beams used by different sites are configured within different beam sets. In other words, the beams within the same beam set are the beams used by the same site. Therefore, when the beam currently used in the first CSI-RS resource and the first beam belong to the same beam set, the same site is preferably used to transmit the first CSI-RS resource. Therefore, the beam currently used in the first CSI-RS resource is updated to the first beam. The same explanation applies to the second beam. Details are not provided one by one again in this specification.

[0428] 4. The first communication device receives a first RRC message or a first MAC CE from the second communication device. The first RRC message or the first MAC CE indicates that one or both of the first beam and the second beam are used for the first CSI-RS resource. The first communication device determines the beam to be used for the first CSI-RS resource using the first RRC message or the first MAC CE.

[0429] When the first RRC message or the first MAC CE indicates that one of the first beam and the second beam is used for the first CSI-RS resource, the first communication device either considers by default that the first beam is used for the first CSI-RS resource or considers by default that the second beam is used for the first CSI-RS resource. Further, the second communication device can further indicate to the first communication device, using the first RRC message or the first MAC CE, that the first beam or the second beam is used for the first CSI-RS resource. Alternatively, the second communication device can indicate to the first communication device, using another RRC message or MAC CE, that the first beam or the second beam is used for the first CSI-RS resource.

[0430] 5. The first communication device receives a second RRC message or a second MAC CE from the second communication device. The second RRC message or the second MAC CE indicates that the first beam, the second beam, or both the first beam and the second beam are used for the first CSI-RS resource. The first communication device determines the beam to be used for the first CSI-RS resource using the second RRC message or the second MAC CE.

[0431] Note that the five methods of Case B are not alternatively limited to Case B. Specifically, when a network device configures a plurality of CSI-RS resource sets for a terminal device, the first communication device can also determine the beam of each CSI-RS resource using the methods described above.

[0432] In other words, based on Case B, the first rule is that the beam used for the first CSI-RS resource is the first beam, the beam used for the first CSI-RS resource is the second beam, if the beam currently used for the CSI-RS resource set and the first beam belong to the same beam set, the beam currently used for the first CSI-RS resource is updated to the first beam, or if the beam currently used for the CSI-RS resource set and the second beam belong to the same beam set, the beam currently used for the first CSI-RS resource is updated to the second beam, the first RRC message or the first MAC CE indicates that one or both of the first beam and the second beam are used for the first CSI-RS resource. When the first RRC message or the first MAC CE indicates that one of the first beam and the second beam is used for the first CSI-RS resource, whether it is considered default that the first beam is used for the first CSI-RS resource, or whether it is considered default that the second beam is used for the first CSI-RS resource, or when the first RRC message or the first MAC CE indicates that both of the first beam and the second beam are used for the first CSI-RS resource, the first beam and the second beam are used for the first CSI-RS resource, or The second RRC message or the second MAC CE indicates that the first beam, the second beam, or both the first beam and the second beam are used for the first CSI-RS resource, and the beam indicated by the second RRC message or the second MAC CE is used for the first CSI-RS resource. Specifically, this includes.

[0433] Optionally, this embodiment further includes 8003, and 8003 may be performed after 8002.

[0434] 8003: The first communication device transmits the first CSI-RS resource via the beam used for the first CSI-RS resource.

[0435] For example, the first communication device determines that the first beam is used for the first CSI-RS resource. When the first communication device is a terminal device, the terminal device transmits CSI-RS on the first CSI-RS resource via the first beam. When the first communication device is a network device, the network device receives CSI-RS on the first CSI-RS resource via the first beam.

[0436] For example, the first communication device determines that the first beam is used for the second CSI-RS resource. When the first communication device is a terminal device, the terminal device transmits CSI-RS on the first CSI-RS resource via the second beam. When the first communication device is a network device, the network device receives CSI-RS on the first CSI-RS resource via the second beam.

[0437] In an embodiment of the present application, the first communication device determines a first beam and a second beam. The first beam and the second beam are beams of the same type, and the first beam and the second beam are two beams instructed by a network device to a terminal device. The first communication device determines, according to a first rule, the beam used for the first CSI-RS resource. The beam used for the first CSI-RS resource is the first beam and / or the second beam. According to the technical solution of the present application, it can be found that the first communication device can determine the beam used for the first CSI-RS resource according to the first rule. In this way, the first communication device can correctly apply the beam instructed by the network device for the transmission of the corresponding reference signal, and improve the communication transmission performance.

[0438] Referring to the embodiment shown in FIG. 9, hereinafter, the process in which the second communication device instructs the first communication device of the first beam and the second beam will be described.

[0439] FIG. 9 is a schematic diagram of another embodiment of a beam usage method according to an embodiment of the present application. Refer to FIG. 9. The method includes the following steps.

[0440] 901: The second communication device transmits second instruction information to the first communication device. Correspondingly, the first communication device receives the second instruction information from the second communication device.

[0441] The second instruction information instructs at least two common beams of the same type. Specifically, the technical solution of the present application is described herein using the example where the second instruction information instructs the first beam and the second beam. The first communication device is a terminal device, and the second communication device is a network device.

[0442] The first beam and the second beam are two downlink common beams, two uplink common beams, or two uplink and downlink common beams. Specifically, the first beam and the second beam should be understood with reference to the foregoing embodiments. For example, when the first beam and the second beam are used for PDCCH transmission, the first beam and the second beam are two downlink common beams or two uplink and downlink common beams.

[0443] In some implementations, the first beam and the second beam are beams used by the same site. Alternatively, the first beam and the second beam are beams used by different sites for multi-site transmission.

[0444] Optionally, the second indication information may be carried in DCI.

[0445] Note that the network device can separately indicate the first beam and the second beam using two pieces of DCI, the network device can separately indicate the first beam and the second beam using two TCI fields within the same DCI, the network device can separately indicate the first beam and the second beam using different field values within the same TCI field within the same DCI, or the network device can indicate the first beam and the second beam using the same TCI field value.

[0446] For some methods of distinguishing the first beam from the second beam, refer to the related description of 401 in the embodiment shown in FIG. 4. Details are not repeatedly described herein.

[0447] Optionally, the embodiment shown in FIG. 9 further includes 902 and 903, and 902 and 903 may be performed before 901.

[0448] 902: The second communication device transmits configuration information to the first communication device. Correspondingly, the first communication device receives the configuration information from the second communication device.

[0449] The configuration information is for configuring a full beam set for the first communication device. The full beam set includes a downlink common beam, an uplink common beam, and at least one of the uplink and downlink common beams.

[0450] Optionally, the common beam configured by the second communication device for the first communication device may be further grouped into a plurality of beam sets. The indices of the beams within the plurality of beam sets may be different, so that the beam set to which a beam belongs can be distinguished using the index of the beam. For example, the beams used at different sites may be configured within different beam sets and different indices are used. The first communication device can determine which site corresponds to the beam using the index of the indicated beam.

[0451] Optionally, the configuration information may be carried by RRC signaling.

[0452] 903: The second communication device transmits fourth indication information to the first communication device. Correspondingly, the first communication device receives the fourth indication information from the second communication device.

[0453] The fourth indication information is for activating a subset of the beam set configured in the process of 902 for the first communication device. The beams included in the subset further indicate a first beam and a second beam to the first communication device using the indication information in 901. 2 The indication information is used to further instruct the first communication device of the first beam and the second beam.

[0454] Optionally, the fourth indication information is carried by a MAC CE, and the beam information included in a subset of the beam set is carried by a MAC CE. For example, each beam activated by a MAC CE corresponds to each field value of the TCI field in the DCI of 901. After the second communication device sends one piece of DCI to the first communication device, the first communication device can use the value of the TCI field in the DCI to determine which beam in the activated beam is indicated by the second communication device. For example, 64 beams are configured using the configuration information of 902, and the MAC CE activates 8 out of the 64 beams in the process of 903. The eight beams respectively correspond to eight field values of the TCI field in the DCI. After the first communication device receives one piece of DCI, if the value of the TCI field in the DCI is #0, the first beam among the eight beams activated by the MAC CE is indicated.

[0455] Optionally, one MAC CE may activate only one type of beam or multiple types of beams. The same type of beams activated by the MAC CE may be put into multiple beam groups, and different beam groups correspond to different sites. The first communication device can determine which site corresponds to the beam based on the beam group to which the beam belongs.

[0456] Optionally, multiple beam groups of the same type may be activated using one MAC CE. For example, one MAC CE activates multiple beams of the same type, and the multiple beams of the same type may be put into multiple beam groups. Alternatively, multiple beam groups of the same type may be separately activated using multiple MAC CEs. For example, each MAC CE activates only one group of beams of the same type.

[0457] When the subset of the beam set activated by the MAC CE at 903 contains only one beam, it should be noted that the first communication device directly uses that beam, and the second communication device does not need to further indicate a beam from the beam activated in the process of 901. Therefore, in this implementation form, it can be understood that the first beam and the second beam of 901 can be directly indicated using the MAC CE. This is not specifically limited in this application.

[0458] The foregoing method embodiments may be implemented separately or in combination. For the terms and related technologies in the embodiments, reference is made to each other. In other words, technical solutions that do not conflict or logically compete with each other among different embodiments can be combined with each other. This is not specifically limited in this application.

[0459] Hereinafter, the communication device provided in the embodiments of this application will be described.

[0460] FIG. 10 is a schematic diagram of the structure of a communication device according to an embodiment of this application. Please refer to FIG. 10. The communication device may be configured to perform the processes performed by the first communication device in the embodiment shown in FIG. 4, the embodiments shown in FIGS. 6 to 9, and the embodiments shown in steps 8001 to 8003. For details, please refer to the relevant descriptions in the foregoing method embodiments.

[0461] The communication device 1000 includes a processing module 1001. Optionally, the communication device 1000 further includes a transceiver module 1002. The transceiver module 1002 can implement corresponding communication functions, and the processing module 1001 is configured to perform data processing. The transceiver module 1002 may be referred to as a communication interface or a communication module.

[0462] Optionally, communication device 1000 may further include a memory module. The memory module may be configured to store instructions and / or data. Processing module 1001 may be able to read instructions and / or data in the memory module so that the communication device can implement the foregoing method embodiments.

[0463] Communication device placement 1 1000 may be configured to perform the actions performed by the first communication device in the foregoing method embodiments. Communication device 1000 may be the first communication device or a component that can be arranged in the first communication device. Processing module 1001 is configured to perform processing-related operations on the first communication device in the foregoing method embodiments. Optionally, transceiver module 1002 is configured to perform reception-related operations on the first communication device in the foregoing method embodiments.

[0464] Optionally, transceiver module 1002 may include a transmission module and a reception module. The transmission module is configured to perform the transmission operations in the foregoing method embodiments. The reception module is configured to perform the reception operations in the foregoing method embodiments.

[0465] It should be noted that communication device 1000 can include a transmission module but not a reception module, or communication device 1000 can include a reception module but not a transmission module, which may specifically depend on whether the foregoing solution executed by communication device 1000 includes transmission actions and reception actions.

[0466] In one example, communication device 1000 is configured to perform the actions performed by the first communication device in the embodiment shown in FIG. 4.

[0467] The processing module 1001 determines a first beam and a second beam, the first beam and the second beam are beams of the same type, and according to a first rule, determines a beam to be used for a first resource set, and the beam to be used for the first control resource set is the first beam and / or is configured to be the second beam.

[0468] Optionally, the processing module 1001 is configured to perform 402a and 403 in the embodiment shown in FIG. 4.

[0469] In one example, the communication device 1000 is configured to perform actions performed by a first communication device in the embodiment shown in FIG. 6.

[0470] The processing module 1001 determines a first beam and a second beam, the first beam and the second beam are beams of the same type, and according to a first rule, determines a beam to be used for a first PUCCH, and the beam to be used for the first PUCCH is the first beam and / or is configured to be the second beam.

[0471] Optionally, the processing module 1001 is configured to perform 603 in the embodiment shown in FIG. 6.

[0472] In one example, the communication device 1000 is configured to perform actions performed by a first communication device in the embodiment shown in FIG. 8.

[0473] The processing module 1001 determines a first beam and a second beam, the first beam and the second beam are beams of the same type, and according to a first rule, determines a beam to be used for a first SRS resource, and the beam to be used for the first SRS resource is the first beam and / or is configured to be the second beam.

[0474] Optionally, the processing module 1001 is configured to perform 803 in the embodiment shown in FIG. 8.

[0475] In one example, the communication device 1000 is configured to perform the actions performed by the first communication device in the embodiment shown in FIG. 9. For example, the transceiver module 1002 is configured to perform 901 in the embodiment shown in FIG. 9. Optionally, the transceiver module 1002 is configured to perform 902 and 903 in the embodiment shown in FIG. 9.

[0476] It should be understood that the specific processes by which the modules perform the corresponding processes described above are described in detail in the foregoing method embodiments. For the sake of brevity, the details are not repeated herein.

[0477] The processing module 100 in the foregoing embodiments 1 may be implemented by at least one processor or processor-related circuitry. The transceiver module 1002 may be implemented by a transceiver or transceiver-related circuitry. The transceiver module 1002 may also be referred to as a communication module or communication interface. The storage module may be implemented by at least one memory.

[0478] Hereinafter, the communication device provided in the embodiments of the present application will be described.

[0479] FIG. 11 is a schematic diagram of the structure of a communication device according to an embodiment of the present application. Please refer to FIG. 11. The communication device may be configured to perform the processing performed by the first communication device in the embodiment shown in FIG. 7. For details, please refer to the relevant descriptions in the foregoing method embodiments.

[0480] The communication device 1100 includes a transceiver module 1101. Optionally, the communication device 1100 further includes a processing module 1102. The transceiver module 1101 can perform corresponding communication functions, and the processing module 1102 is configured to perform data processing. The transceiver module 1101 may be referred to as a communication interface or a communication module.

[0481] Optionally, the communication device 1100 may further include a storage module. The storage module may be configured to store instructions and / or data. The processing module 1102 can read the instructions and / or data in the storage module so that the communication device can implement the foregoing method embodiments.

[0482] Communication device placement 1 1100 may be configured to perform the actions performed by the first communication device in the foregoing method embodiments. The communication device 1100 may be the first communication device or a component that can be arranged in the first communication device. The transceiver module 1101 is configured to perform reception-related operations on the first communication device in the foregoing method embodiments. The processing module 1102 is configured to perform processing-related operations on the first communication device in the foregoing method embodiments.

[0483] Optionally, the transceiver module 1101 may include a transmission module and a reception module. The transmission module is configured to perform the transmission operation in the foregoing method embodiments. The reception module is configured to perform the reception operation in the foregoing method embodiments.

[0484] It should be noted that the communication device 1100 can include a transmission module but not a reception module, or the communication device 1100 can include a reception module but not a transmission module, which may specifically depend on whether the foregoing solution executed by the communication device 1100 includes transmission actions and reception actions.

[0485] In one example, the communication device 1100 is configured to perform the actions performed by the first communication device in the embodiment shown in FIG. 7.

[0486] The transceiver module 1101 is configured to determine a first beam and a second beam, the first beam and the second beam being of the same type of beam, and to receive third indication information from a second communication device, the third indication information being The first beam is used for a first shared channel, The second beam is used for a first shared channel, The first beam and the second beam are used for a first shared channel, or The first beam and the second beam are not used for a first shared channel, and instructs any one of them.

[0487] Optionally, the processing module 1102 is configured to perform 703 in the embodiment shown in FIG. 7.

[0488] It should be understood that the specific processes by which the modules perform the corresponding processes described above are described in detail in the foregoing method embodiments. For the sake of brevity, details are not repeated herein.

[0489] The processing module 1102 in the foregoing embodiment may be implemented by at least one processor or processor-related circuitry. The transceiver module 1101 may be implemented by a transceiver or transceiver-related circuitry. The transceiver module 1101 may also be referred to as a communication module or communication interface. The storage module may be implemented by at least one memory.

[0490] One embodiment of the present application further provides a communication device 1200. Refer to FIG. 12. The communication device 1200 includes a processor 1210. The processor 1210 is coupled to a memory 1220. The memory 1220 is configured to store a computer program or instructions and / or data. The processor 1210 is configured to execute the computer program or instructions and / or data stored in the memory 1220 to perform the method in the foregoing method embodiments.

[0491] Optionally, the communication device 1200 includes one or more processors 1210.

[0492] Optionally, as shown in FIG. 12, the communication device 1200 may further include a memory 1220.

[0493] Optionally, the communication device 1200 includes one or more memories 1220.

[0494] Optionally, the memory 1220 and the processor 1210 may be integrated together or arranged separately.

[0495] Optionally, as shown in FIG. 12, the communication device 1200 may further include a transceiver 1230. The transceiver 1230 is configured to receive and / or transmit signals. For example, the processor 1210 is configured to control the transceiver 1230 to receive and / or transmit signals.

[0496] In the solution, the communication device 1200 is configured to perform the operations performed by the first communication device in the foregoing method embodiments.

[0497] For example, the processor 1210 is configured to perform processing-related operations performed by the first communication device in the foregoing method embodiments, and the transceiver 1230 is configured to perform transmission and reception-related operations performed by the first communication device in the foregoing method embodiments.

[0498] This application further provides a communication device 1300. The communication device 1300 may be a terminal device, a processor of the terminal device, or a chip. The communication device 1300 may be configured to perform the operations performed by the first communication device in the foregoing method embodiments.

[0499] When the communication device 1300 is a terminal device, FIG. 13 is a simplified schematic diagram of the structure of the terminal device. As shown in FIG. 13, the terminal device includes a processor, a memory, and a transceiver. The memory can store computer program code. The transceiver includes a transmitter 1331, a receiver 1332, a radio frequency circuit (not shown), an antenna 1333, and an input / output device (not shown).

[0500] The processor is mainly configured to process communication protocols and communication data, control the terminal device, execute software programs, and process data of software programs. The memory is mainly configured to store software programs and data. The radio frequency circuit is mainly configured to perform conversion between baseband signals and radio frequency signals and process radio frequency signals. The antenna is mainly configured to transmit and receive radio frequency signals in the form of electromagnetic waves. The input / output data device, such as a touch screen, a display, or a keyboard, is mainly configured to receive data input by the user and output it to the user. Note that depending on the type of the terminal device, it may not have an input / output device.

[0501] When data needs to be transmitted, the processor performs baseband processing on the data to be transmitted and outputs a baseband signal to the radio frequency circuit. The radio frequency circuit performs radio frequency processing on the baseband signal and then transmits a radio frequency signal in the form of an electromagnetic wave via an antenna. When data is transmitted to the terminal device, the radio frequency circuit receives a radio frequency signal via the antenna, converts the radio frequency 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 simplicity of explanation, FIG. 13 shows only one memory, one processor, and one transceiver. In an actual terminal device product, there may be one or more processors and one or more memories. The memory may be referred to as a storage medium, a storage device, etc. The memory may be arranged independently of the processor or integrated with the processor. This is not limited in the embodiments of the present application.

[0502] In the embodiments of the present application, an antenna and a radio frequency circuit having a transmission function and a reception function may be regarded as a transceiver module of the terminal device, and a processor having a processing function may be regarded as a processing module of the terminal device.

[0503] As shown in FIG. 13, the terminal device includes a processor 1310, a memory 1320, and a transceiver 1330. The processor 1310 may be referred to as a processing unit, a processing board, a processing module, a processing device, etc. The transceiver 1330 may be referred to as a transceiver unit, a transceiver machine, or a transceiver device, etc.

[0504] Optionally, components in the transceiver 1330 configured to implement a receiving function may be regarded as a receiving module, and components in the transceiver 1330 configured to implement a transmitting function may be regarded as a transmitting module. In other words, the transceiver 1330 includes a receiver and a transmitter. The transceiver may sometimes be referred to as a transceiver unit, a transceiver module, a transceiver circuit, etc. The receiver may be referred to as a receiver, a receiving module, a receiving circuit, etc. The transmitter may be referred to as a transmitter, a transmission module, a transmission circuit, etc.

[0505] For example, in one implementation, the processor 1310 is configured to perform processing actions on the first communication device in the embodiment shown in FIG. 4, and the transceiver 1330 is configured to perform transmitting and receiving actions on the first communication device in FIG. 4. For example, the transceiver 1330 performs the determination operation of 401 in the embodiment shown in FIG. 4, specifically, that is, it is configured to receive first instruction information for instructing the first beam and the second beam from the second communication device. The processor 1310 is configured to perform the processing operation of 402 in the embodiment shown in FIG. 4. Optionally, the processor 1310 is further configured to perform the processing operations of 402a and 403 in the embodiment shown in FIG. 4.

[0506] For example, in one implementation, the processor 1310 is configured to perform processing actions on the first communication device in the embodiment shown in FIG. 6. The transceiver 1330 is configured to perform transmission and reception actions on the first communication device in the embodiment shown in FIG. 6. The processor 1310 is configured to perform processing actions in the embodiment shown in FIG. 6. For example, the transceiver 1330 is configured to perform the determination operation of 601 in the embodiment shown in FIG. 6, specifically, that is, to receive the first instruction information for instructing the first beam and the second beam from the second communication device. The processor 1310 is configured to perform the processing operation of 602 in the embodiment shown in FIG. 6. Optionally, the processor 1310 is further configured to perform the processing operation of 603 in the embodiment shown in FIG. 6.

[0507] For example, in one implementation, the processor 1310 is configured to perform processing actions on the first communication device in the embodiment shown in FIG. 7. The transceiver 1330 is configured to perform transmission and reception actions on the first communication device in the embodiment shown in FIG. 7. The processor 1310 is configured to perform processing actions in the embodiment shown in FIG. 7. For example, the transceiver 1330 is configured to perform the determination operations of 701 and 702 in the embodiment shown in FIG. 7, specifically, that is, to receive the first instruction information for instructing the first beam and the second beam from the second communication device. Optionally, the processor 1310 is further configured to perform the processing operation of 703 in the embodiment shown in FIG. 7.

[0508] For example, in one implementation form, the processor 1310 is configured to perform processing actions on the first communication device in the embodiment shown in FIG. 8. The transceiver 1330 is configured to perform transmission and reception actions on the first communication device in the embodiment shown in FIG. 8. The processor 1310 is configured to perform the processing actions in the embodiment shown in FIG. 8. For example, the transceiver 1330 is configured to perform the determination operation of 801 in the embodiment shown in FIG. 8, specifically, that is, to receive the first instruction information for instructing the first beam and the second beam from the second communication device. The processor 1310 is configured to perform the processing operation of 802 in the embodiment shown in FIG. 8. Optionally, the processor 1310 is further configured to perform the processing operation of 803 in the embodiment shown in FIG. 8.

[0509] For example, in one implementation form, the processor 1310 is configured to perform processing actions on the first communication device in the embodiment shown from step 8001 to step 8003. The transceiver 1330 is configured to perform transmission and reception actions on the first communication device in the embodiment shown from step 8001 to step 8003. For example, the transceiver 1330 is configured to perform the determination operation of 8001 in the embodiment shown from step 8001 to step 8003, specifically, that is, to receive the first instruction information for instructing the first beam and the second beam from the second communication device. The processor 1310 is configured to perform the processing operation of 8002 in the embodiment shown from step 8001 to step 8003. Optionally, the processor 1310 is further configured to perform the processing operation of 8003 in the embodiment shown from step 8001 to step 8003.

[0510] For example, in one implementation form, the transceiver 1330 is configured to perform transmission and reception actions with respect to the first communication device in the embodiment shown in FIG. 9. The transceiver 1330 is configured to perform 901 in the embodiment shown in FIG. 9. Optionally, the transceiver 1330 is configured to perform 902 and 903 in the embodiment shown in FIG. 9.

[0511] It should be understood that FIG. 13 is merely an example and not a limitation. The terminal device including the transceiver module and the processing module may not depend on the structure shown in FIG. 11 or FIG. 12.

[0512] When the communication device 1300 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 integrated on the chip, a microprocessor, or an integrated circuit. The transmission operation of the terminal device in the foregoing method embodiment may be understood as the output of the chip, and the reception operation of the terminal device in the foregoing method embodiment may be understood as the input of the chip.

[0513] This application further provides a communication device 1400. The communication device 1400 may be a network device or a chip. The communication device 1400 may be configured to perform the operations performed by the first communication device in the method embodiments shown in FIGS. 4, 6, 7, and 8, or may be configured to perform the operations performed by the second communication device in the method embodiment shown in FIG. 9.

[0514] When the communication device 1400 is a network device, for example, a base station, FIG. 14 is a simplified schematic diagram of the structure of the base station. The base station includes a portion 1410, a portion 1420, and a portion 1430. The portion 1410 is mainly configured to perform baseband processing, base station control, etc. The portion 1410 is usually the control center of the base station and may usually be called a processor, and is configured to control the base station to perform processing operations in the network device in the foregoing method embodiments. The portion 1420 is mainly configured to store computer program code and data. The portion 1430 is mainly configured to transmit and receive radio frequency signals and convert radio frequency signals and baseband signals. The portion 1430 may usually be called a transceiver module, a transceiver unit, a transceiver circuit, a transceiver, etc. The transceiver module of the portion 1430 may also be called a transceiver unit, a transceiver, etc., and includes an antenna 1433 and a radio frequency circuit (not shown). The radio frequency circuit is mainly configured to perform radio frequency processing. Optionally, in the portion 1430, components configured to implement a receiving function may be regarded as a receiving unit, and components configured to implement a transmitting function may be regarded as a transmitting unit. In other words, the portion 1430 includes a receiver 1432 and a transmitter 1431. The receiver may also be called a receiving module, a receiver, a receiving circuit, etc. The transmitter may also be called a transmission module, a transmitter, a transmission circuit, etc.

[0515] The portion 1410 and the portion 1420 may include one or more boards. Each board may include one or more processors and one or more memories. The processor is configured to read and execute a program in the memory and implement baseband processing functions and base station control. When there are multiple boards, the boards may be interconnected with each other to enhance processing capabilities. In an optional implementation, multiple boards may share one or more processors, multiple boards may share one or more memories, or all of the multiple boards may share one or more processors.

[0516] For example, in one implementation form, the transceiver module of part 1430 is configured to perform transmission and reception related processing performed by the first communication device in the embodiments shown in FIGS. 4, 6, 7, and 8. The processor of part 1410 is configured to perform processing related processing performed by the first communication device in the embodiments shown in FIGS. 4, 6, 7, and 8, and in the embodiments shown from step 8001 to step 8003. In another implementation form, the transceiver module of part 1430 is configured to perform transmission and reception related processing performed by the second communication device in the embodiment shown in FIG. 9.

[0517] It should be understood that FIG. 14 is merely an example and not a limitation. The network device including a processor, a memory, and a transceiver may not depend on the structure shown in FIG. 11 or FIG. 12.

[0518] When the communication device 1400 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 integrated on the chip, a microprocessor, or an integrated circuit. The transmission operation of the network device in the foregoing method embodiment may be understood as the output of the chip, and the reception operation of the network device in the foregoing method embodiment may be understood as the input of the chip.

[0519] One embodiment of the present application further provides a computer-readable storage medium. The computer-readable storage medium stores computer instructions used to implement the method performed by the first communication device in the foregoing method embodiment. or program to store.

[0520] For example, a computer instruction orWhen the program is executed by a computer, the computer is enabled to implement the method performed by the first communication device in the foregoing method embodiments.

[0521] Embodiments of the present application further provide a computer program product including the specification or program For example, when instructions or program are executed by a computer, the computer is enabled to implement the method performed by the first communication device in the foregoing method embodiments.

[0522] One embodiment of the present application further provides a communication system. The communication system includes the first communication device and the second communication device in the foregoing embodiments.

[0523] One embodiment of the present application further provides a chip device including a processor configured to call a computer program or computer instructions stored in a memory to enable the processor to perform the beam usage method in the embodiments shown in FIGS. 4, 6 to 9, and the embodiments shown in steps 8001 to 8003.

[0524] In a possible implementation form, the input of the chip device corresponds to the reception operation in the embodiments shown in FIGS. 4 and 6 to 9. The output of the chip device corresponds to the transmission operation in the embodiments shown in FIGS. 4, 6 to 9, and the embodiments shown in steps 8001 to 8003.

[0525] Optionally, the processor is coupled to the memory via an interface.

[0526] Optionally, the chip device further includes a memory. The memory stores a computer program or computer instructions.

[0527] The processor mentioned above is a general-purpose central processing unit, a microprocessor, or an application-specific integrated circuit (Aone or more integrated circuits configured to control the program execution of the beam usage method in the embodiments shown in FIGS. 4, 6 to 9, and the embodiments shown in steps 8001 to 8003. The memory mentioned somewhere above may be a read-only memory (R OM), or another type of static storage device capable of storing static information and instructions, a random access memory (R AM), etc. may also be used.

[0528] For the purpose of simplicity and conciseness of the description, those skilled in the art should clearly understand that the description and beneficial effects of the content related to any of the communication devices provided above should refer to the corresponding method embodiments provided above. Details are not repeated in this specification.

[0529] In this application, the terminal device or the network device may include a hardware layer, an operating system layer operating on the hardware layer, and an application layer operating on the operating system layer. The hardware layer may include a central processing unit (C PU), memory management unit (M MU), and hardware such as a memory (sometimes called a main memory). The operating system of the operating system layer may be any one or more computer operating systems that implement service processing using a process, for example, a Linux operating system, a Unix operating system, an Android operating system, an iOS operating system, or a windows operating system. The application layer may include applications such as a browser, an address book, word processing software, and instant messaging software.

[0530] For the sake of simplicity, those skilled in the art will clearly understand that for the detailed operation processes of the aforementioned systems, devices, and modules, reference may be made to the corresponding processes of the aforementioned method embodiments. Details will not be repeatedly described in this specification.

[0531] In some embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods can also be implemented in other ways. For example, the described device embodiments are merely examples. For example, the division into modules is only a logical function division, and in actual implementation forms, other divisions may be possible. For example, multiple modules or components may be combined or integrated as another system, or some features may be ignored or not performed. In addition, the mutual coupling, direct coupling, or communication connection shown or described may be implemented through some interfaces. The indirect coupling or communication connection between devices or modules may be implemented in electronic, mechanical, or other forms.

[0532] The modules described as separate parts may or may not be physically separate, and the parts shown as modules may or may not be physical modules. They may be located in one position or distributed among multiple network modules. Some or all of the modules may be selected based on actual requirements to achieve the purpose of the embodiment's solution.

[0533] In addition, the functional modules in the embodiments of this application may be integrated as one processing module, or each of the modules may physically exist alone, or two or more modules may be integrated as one module. The integrated module may be implemented in the form of hardware or in the form of a software functional module.

[0534] When the integrated module is implemented in the form of a software functional module and sold or used as an independent product, the integrated unit may be stored in a computer-readable storage medium. Based on such understanding, part of the technical solution of this application that essentially contributes, or all or part of the technical solution, may be implemented in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for instructing a computer device (which may be a personal computer, a server, or a network device) to perform all or part of the steps of the method described in the embodiments of this application. The aforementioned storage medium includes any medium that can store program code, such as a USB flash drive, a removable hard disk, a read-only memory, a random access memory, a magnetic disk, or an optical disk.

[0535] In conclusion, the foregoing embodiments are only intended to illustrate the technical solution of this application and are not intended to limit the technical solution of this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should ...

Claims

1. A beam indication method, wherein the method comprises: receiving indication information, wherein the indication information indicates two common beams of the same type, the two common beams include a first common beam and a second common beam, and each common beam is used to transmit a plurality of channels and / or a plurality of reference signals; determining a beam corresponding to a first reference signal or a first channel, wherein the beam corresponding to the first reference signal or the first channel is the first common beam, or the second common beam, or the first common beam and the second common beam; A beam indication method comprising the above.

2. When the first channel is a first physical downlink control channel (PDCCH) and two control resource set (CORESET) groups are configured for a terminal device, each CORESET group includes at least one CORESET. When the CORESET corresponding to the first PDCCH belongs to the CORESET group with a smaller index among the two CORESET groups, the beam corresponding to the first PDCCH is the first common beam, or When the CORESET corresponding to the first PDCCH belongs to the CORESET group with a larger index among the two CORESET groups, the beam corresponding to the first PDCCH is the second common beam. The method according to Claim 1.

3. The method according to Claim 2, wherein the first common beam is indicated by a first DCI, the second common beam is indicated by a second DCI, the first DCI is carried by a PDCCH corresponding to the CORESET group with a smaller index, and the second DCI is carried by a PDCCH corresponding to the CORESET group with a larger index.

4. When the first channel is a first PDCCH and one CORESET group is configured for a terminal device, the CORESET group includes at least one CORESET. When the CORESET is a single-beam CORESET, the beam corresponding to the first PDCCH is the first common beam or the second common beam, or When the CORESET is a multi-beam CORESET, the beams corresponding to the first PDCCH are the first common beam and the second common beam. The method according to claim 1.

5. The type of the CORESET is determined using the configuration parameters of the CORESET corresponding to the first PDCCH. The method according to claim 4.

6. The first reference signal is a sounding reference signal (SRS). When two SRS resource sets of type "codebook" are configured for the terminal device, the SRS in the first SRS resource set within the two SRS resource sets uses the first common beam, and the SRS in the second SRS resource set within the two SRS resource sets uses the second common beam. The method according to claim 1.

7. The method according to claim 1, wherein the first channel is a physical downlink shared channel (PDSCH), and the beam corresponding to the PDSCH is indicated using downlink control information (DCI).

8. The DCI is The PDSCH uses the first common beam. The PDSCH uses the second common beam, or The PDSCH uses the first common beam and the second common beam The method according to claim 7, which is used to indicate any one of the above.

9. A receiving module configured to receive indication information, where the indication information indicates two common beams of the same type, the two common beams include a first common beam and a second common beam, and each common beam is used to transmit a plurality of channels and / or a plurality of reference signals; A processing module configured to determine a beam corresponding to a first reference signal or a first channel, where the beam corresponding to the first reference signal or the first channel is the first common beam, or the second common beam, or the first common beam and the second common beam; A communication device comprising the above.

10. When the first channel is a first physical downlink control channel (PDCCH) and two control resource set (CORESET) groups are configured for a terminal device, each CORESET group includes at least one CORESET, when the CORESET corresponding to the first PDCCH belongs to the CORESET group with a smaller index among the two CORESET groups, the beam corresponding to the first PDCCH is the first common beam, or when the CORESET corresponding to the first PDCCH belongs to the CORESET group with a larger index among the two CORESET groups, the beam corresponding to the first PDCCH is the second common beam, The communication device according to claim 9.

11. The first common beam is indicated by a first DCI, the second common beam is indicated by a second DCI, the first DCI is carried by a PDCCH corresponding to the CORESET group with a smaller index, and the second DCI is carried by a PDCCH corresponding to the CORESET group with a larger index. The communication device according to claim 10.

12. When the first channel is a first PDCCH and one CORESET group is configured for a terminal device, the CORESET group includes at least one CORESET, when the CORESET is a single-beam CORESET, the beam corresponding to the first PDCCH is the first common beam or the second common beam, or when the CORESET is a multi-beam CORESET, the beam corresponding to the first PDCCH is the first common beam and the second common beam, The communication device according to claim 9.

13. The type of the CORESET is determined using the configuration parameters of the CORESET corresponding to the first PDCCH, The communication device according to claim 12.

14. The first reference signal is a sounding reference signal (SRS), When two SRS resource sets of type "codebook" are configured for a terminal device, the SRS in the first SRS resource set within the two SRS resource sets uses the first common beam, and the SRS in the second SRS resource set within the two SRS resource sets uses the second common beam. The communication device according to claim 9.

15. The communication device according to claim 9, wherein the first channel is a physical downlink shared channel (PDSCH), and the beam corresponding to the PDSCH is indicated using downlink control information (DCI).

16. The DCI is the PDSCH uses the first common beam, the PDSCH uses the second common beam, or the PDSCH uses the first common beam and the second common beam The communication device according to claim 15, which is used to indicate any one of them.

17. A communication device, wherein the communication device includes a processor, and the processor is configured to perform the method according to any one of claims 1 to 8.

18. A computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a communication device, the communication device is enabled to perform the method according to any one of claims 1 to 8.

19. A computer program, wherein the computer program includes computer instructions, and when the computer instructions are run on a computer, the computer is enabled to perform the method according to any one of claims 1 to 8.

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