Beam usage methods and related apparatuses

Abstract

The embodiment of the application discloses a beam using method, comprising: 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; the first communication device determines a beam used by a first control resource set according to a first rule, the beam used by the first control resource set is the first beam and / or the second beam. 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 uses the correct beam for transmission, thereby improving the communication transmission performance. For example, in a multi-site transmission scenario, the first communication device correctly applies the first beam and the second beam to the corresponding physical downlink control channel by the technical solution of the application, thereby realizing multi-site transmission.

Description

[0001] This application claims priority to Chinese Patent Application No. 202111277512.9, filed on October 29, 2021, entitled “Method for Using Beams and Related Apparatus”, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of communication technology, and in particular to a beam usage method and related apparatus. Background Technology

[0003] Fifth-generation (5G) mobile communication systems can employ high-frequency communication, specifically ultra-high-frequency (>6GHz) signals for data transmission. A major problem with high-frequency communication is the sharp decrease in signal energy with transmission distance, resulting in short transmission ranges. To overcome this issue, high-frequency communication uses analog beamforming technology. By weighting the antenna array, the signal energy is concentrated within a small angular range, forming a beam-like signal (called an analog beam, or simply a beam), thereby increasing the transmission distance.

[0004] Network devices and terminal devices use beamforming for transmission. A network device can indicate multiple beams of the same type to a terminal device. For example, multiple uplink common beams, multiple downlink common beams, or multiple uplink and downlink common beams. However, correctly applying the beams indicated by the network device to the corresponding channels is a problem that urgently needs to be solved. Summary of the Invention

[0005] This application provides a beam usage method and related apparatus for a first communication device to determine the beam to be used for a first control resource set according to a first rule. This enables the first communication device to correctly apply 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 uses the correct beam for transmission, thereby improving communication transmission performance.

[0006] The first aspect of this application provides a method for using beams, including:

[0007] The first communication device determines a first beam and a second beam, wherein the first beam and the second beam are beams of the same type; then, the first communication device determines the beam used by the first control resource set according to a first rule, wherein the beam used by the first control resource set is the first beam and / or the second beam.

[0008] In the above technical solution, the first communication device determines a first beam and a second beam, which 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 downlink common beams or two uplink and downlink common beams. The first communication device can determine the beam used by the first control resource set from the first beam and the second beam according to a first rule. This enables the first communication device to correctly apply 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 can use the correct beam for transmission, thereby improving communication transmission performance. For example, in a multi-site transmission scenario, the first communication device, through the technical solution of this application, determines to correctly apply the first beam and the second beam to the corresponding physical downlink control channel (PDCCH), thereby realizing multi-site transmission.

[0009] In one possible implementation, if the network device configures two control resource set groups for the terminal device, each control resource set group including at least one control resource set, the first communication device determines the beam used by the first control resource set according to a first rule, including:

[0010] If the first control resource set belongs to the first control resource set group in the two control resource set groups, the first communication device determines that the beam used by the first control resource set is the first beam; if the first control resource set belongs to the second control resource set group in the two control resource set groups, the first communication device determines that the beam used by the first control resource set is the second beam.

[0011] Wherein, the first control resource set group is the control resource set group with the smaller grouping index among the two control resource set groups, and the second control resource set group is the control resource set group with the larger grouping index among the two control resource set groups; or, the first control resource set group is the control resource set group with the larger grouping index among the two control resource set groups, and the second control resource set group is the control resource set group with the smaller grouping index among the two control resource set groups.

[0012] In the above implementation, for cases where the network device configures two control resource set groups for the terminal device, a specific method is provided for the first communication device to determine the beam used by the first control resource set, so that the first communication device can use the correct beam to transmit the PDCCH corresponding to the first control resource set. For example, in a multi-site transmission scenario, the two control resource set groups correspond to two sites respectively. Through the technical solution of this application, the first communication device can determine that the control resource set belonging to the two control resource set groups uses the corresponding beam, thereby realizing multi-site transmission.

[0013] In another possible implementation, if 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, the first communication device determines the beam used by the first control resource set according to a first rule, including:

[0014] If the first control resource set is the control resource set with the smaller index among the two control resource sets, the first communication device determines that the beam used by the first control resource set is the first beam; if the first control resource set is the control resource set with the larger index among the two control resource sets, the first communication device determines that the beam used by the first control resource set is the second beam; or...

[0015] If the first control resource set is the control resource set configured earlier in the two control resource sets, the first communication device determines that the beam used by the first control resource set is the first beam; if the first control resource set is the control resource set configured later in the two control resource sets, the first communication device determines that the beam used by the first control resource set is the second beam.

[0016] In the above implementation, for cases where 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 is provided for the first communication device to determine the beam used by the first control resource set, so that the first communication device can use the correct beam to transmit the PDCCH corresponding to the first control resource set. For example, in a multi-site transmission scenario, the two control resource sets correspond to two sites respectively. Through the technical solution of this application, the first communication device can determine the beams used by the two control resource sets respectively, thereby realizing multi-site transmission.

[0017] In another possible implementation, if 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, the first communication device determines the beam used by the first control resource set according to a first rule, including:

[0018] If the first control resource set is the control resource set with the larger index among the two control resource sets, the first communication device determines that the beam used by the first control resource set is the first beam; if the first control resource set is the control resource set with the smaller index among the two control resource sets, the first communication device determines that the beam used by the first control resource set is the second beam; or...

[0019] If the first control resource set is the control resource set configured later in the two control resource sets, the first communication device determines that the beam used by the first control resource set is the first beam; if the first control resource set is the control resource set configured earlier in the two control resource sets, the first communication device determines that the beam used by the first control resource set is the second beam.

[0020] In the above implementation, for cases where 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, another specific method is provided for the first communication device to determine the beam used for the first control resource set, so that the first communication device can use the correct beam to transmit the PDCCH corresponding to the first control resource set. For example, in a multi-site transmission scenario, the two control resource sets correspond to two sites respectively. Through the technical solution of this application, the first communication device can determine the beams used for the two control resource sets respectively, thereby realizing multi-site transmission.

[0021] In another possible implementation, the two sets of control resources are used for repeated transmissions of the control channel to satisfy any of the following conditions:

[0022] The network device configures two control resource sets for the terminal device, and these two control resource sets belong to different control resource set groups; or,

[0023] 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 is less than the index of the control resource set in the second control resource set group; or, the configuration order of the control resource sets in the first control resource set group precedes the configuration order of the control resource sets in the second control resource set group; wherein, the first control resource set group is the one with the smaller group index, and the second control resource set group is the one with the larger group index; or...

[0024] 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 is greater than the index of the control resource set in the second control resource set group; or, the configuration order of the control resource sets in the first control resource set group is after the configuration order of the control resource sets in the second control resource set group; wherein, the first control resource set group is the one with the smaller group index, and the second control resource set group is the one with the larger group index; or...

[0025] 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.

[0026] The above implementation provides specific examples of conditions that the repeated transmission of the control channel must satisfy using two sets of control resources, so that the first communication device can correctly determine the beam used by the two sets of control resources, thereby improving communication transmission performance. For example, in a multi-site transmission scenario, the first communication device can determine the beam used by the two sets of control resources through the technical solution of this application, thereby realizing multi-site transmission.

[0027] In another possible implementation, if 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 the first control resource set belongs to one of the one or more single-beam control resource sets, the first communication device determines the beam used by the first control resource set according to a first rule, including:

[0028] The first communication device determines that the beam used for the first control resource set is the first beam; or...

[0029] The first communication device determines that the beam used for the first control resource set is the second beam; or,

[0030] If the beam currently used by the first control resource set belongs to the same beam set as the first beam, the first communication device determines to update the beam currently used by the first control resource set to the first beam. If the beam currently used by the first control resource set belongs to the same beam set as the second beam, the first communication device determines to update the beam currently used by the first control resource set to the second beam.

[0031] In the above implementation, when the network device configures a control resource set group for the terminal device, and the first control resource set is a single-beam control resource set, a specific method is provided for the first communication device to determine the beam used by the first control resource set. This enables the first communication device to correctly determine the beam used by the first control resource set, facilitating the selection of a suitable beam for transmitting the PDCCH corresponding to the first control resource set, thereby improving communication transmission performance. For example, beams used by different sites are configured in different beam sets; in other words, beams in the same beam set are beams used by the same site. If the beam currently used by the first control resource set belongs to the same beam set as the first beam, then the PDCCH corresponding to the first control resource set is preferentially transmitted using the same site. Therefore, the beam currently used by the first control resource set is updated to the first beam. The same principle applies to the second beam, which will not be elaborated further here.

[0032] In another possible implementation, the first set of control resources is not used for repeated transmissions of the control channel.

[0033] In the above implementation, the first control resource set is not used for repeated transmission of the control channel with other control resource sets. The first communication device then determines the beam used by the first control resource set in conjunction with the first rule, so as to select a suitable beam for the transmission of the PDCCH corresponding to the first control resource set, thereby improving the communication transmission performance.

[0034] In another possible implementation, if the network device configures a control resource set group for the 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 by the first control resource set according to the first rule, including: the first communication device determines that the beam used by the first control resource set is the first beam and the second beam.

[0035] In this implementation, if the network device configures a control resource set group for the terminal device, and the first control resource set belongs to a multi-beam control resource set within that group, the first control resource set group can directly use the first and second beams. For example, if the first and second beams are used by two sites, the terminal device and the two sites transmit the PDCCH corresponding to the first control resource set through the corresponding beams, thereby achieving multi-site transmission.

[0036] In another possible implementation, the method further includes: a first communication device receiving a first media access control element (MAC CE) from a second communication device, the first MAC CE including an index of a first control resource set; the first communication device determining the beam used by the first control resource set according to a first rule, including:

[0037] 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 first beam, then the first communication device determines that at any time within a first time period, the first control resource set adopts the first common beam of two common beams of the same type that are effective at that time. The first time period is the time interval between the effective time of the beam indicated by the first MAC CE and the effective time of the beam indicated by the second MAC CE. The second MAC CE is the most recently received MAC CE after the first communication device receives the first MAC CE, used to indicate the beam adopted by the first control resource set; or,

[0038] 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, then the first communication device determines that at any time within the first time period, the first control resource set adopts the second common beam of two common beams of the same type that are effective at that time; or,

[0039] If the first MAC CE is a second type of MAC CE, and the first MAC CE includes second beam indication information and third beam indication information, the second beam indication information indicates the first beam, and the third beam indication information indicates the second beam, the first communication device determines that at any time within the first time period, the first control resource set adopts two common beams of the same type that are effective at any time.

[0040] In this implementation, the first communication device can determine the beam used by the first control resource set by combining the received first MAC CE. This enables the first communication device to correctly determine the beam used by the first control resource set, facilitating the selection of a suitable beam for the transmission of the PDCCH corresponding to the first control resource set, thereby improving communication transmission performance.

[0041] In another possible implementation, the method further includes: a first communication device determining the type of a first control resource set, the type of which includes: a single-beam control resource set or a multi-beam control resource set.

[0042] In this implementation, the first communication device can first determine the type of the first control resource set, and then correctly determine the beam used by the first control resource set based on the type of the first control resource set.

[0043] In another possible implementation, the first communication device determines the type of the first set of control resources, including:

[0044] The first communication device determines the type of the first control resource set based on the configuration parameters in the first control resource set; or...

[0045] A first communication device receives first indication information from a second communication device. The first indication information indicates whether the first control resource set is allowed to use multiple beams, or it indicates the type of the first control resource set, where the first communication device is a terminal device and the second communication device is a network device; or...

[0046] 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; or,

[0047] 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 the number of beams used by the first control resource set, including one or two beams; or, the third MAC CE indicates the beams used by the first control resource set, including a first beam and / or a second beam; or...

[0048] The first communication device receives a first MAC CE from the second communication device; the first communication device determines the type of the first control resource set based on the type of the first MAC CE.

[0049] The above implementation methods illustrate several possible ways for the first communication device to determine the type of the first control resource set, thereby facilitating the implementation of the solution. For example, the first communication device can determine the type of the first control resource set through configuration parameters of the first control resource set; this method is simple and easy to implement. Alternatively, the first communication device can determine the type of the first control resource set by receiving first indication information from the second communication device; or, the first communication device can indirectly determine the type of the first control resource set by the number of beams currently used by the first control resource set.

[0050] In another possible implementation, the first communication device determines the type of the first control resource set based on the type of the first MAC CE, including:

[0051] If the first MAC CE is a first type of MAC CE, then the first communication device determines the first control resource set as a single-beam control resource set; or, if the first MAC CE is a second type of MAC CE, then the first communication device determines the first control resource set as a multi-beam control resource set. Optionally, the first type of MAC CE is a MAC CE used to indicate a single beam, and the second type of MAC CE is a MAC CE used to indicate multiple beams.

[0052] The above implementation shows the specific process by which the first communication device determines the type of the first control resource set based on the type of the first MAC CE, which is beneficial for the implementation of the scheme.

[0053] In another possible implementation, the first communication device determines the type of the first control resource set based on the number of beams currently used by the first control resource set, including:

[0054] If the number of beams currently used in the first control resource set is 1, then the first communication device determines that the type of the first control resource set is a single-beam control resource set;

[0055] If the number of beams currently used in the first control resource set is greater than 1, then the first communication device determines that the type of the first control resource set is a multi-beam control resource set.

[0056] The above implementation method illustrates the specific process by which the first communication device determines the type of the first control resource set based on the number of beams currently used by the first control resource set, which is beneficial for the implementation of the scheme.

[0057] In another possible implementation, the single-beam control resource set currently uses 1 beam, while the multi-beam control resource set currently uses more than 1 beam.

[0058] The above implementation illustrates some possible ways to distinguish between the first beam and the second beam, for the first communication device to differentiate 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 can be represented in any of the ways shown above.

[0059] In another possible implementation, the first communication device includes a network device or a terminal device.

[0060] In another possible implementation, the first communication device determines the first beam and the second beam, including:

[0061] A first communication device receives second indication information from a second communication device. The second indication information is used to indicate a first beam and a second beam. The first communication device is a terminal device, and the second communication device is a network device. In this implementation, the first communication device can determine the first beam and the second beam through the second indication information from the second communication device.

[0062] A second aspect of this application provides a method for using a beam, comprising:

[0063] The first communication device determines a first beam and a second beam, wherein the first beam and the second beam are beams of the same type; the first communication device determines the beam used by the first physical uplink control channel (PUCCH) according to a first rule, wherein the beam used by the first PUCCH is the first beam and / or the second beam.

[0064] In the above technical solution, the first communication device determines a first beam and a second beam, which 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 by the first PUCCH from the first beam and the second beam based on a first rule, thereby enabling the first communication device to correctly apply the beam indicated by the network device to the first PUCCH, so that the first PUCCH can use the correct beam for transmission, thereby improving communication transmission performance. For example, in a multi-site transmission scenario, the first communication device determines, through the technical solution of this application, to correctly apply the first beam and the second beam to the corresponding PUCCH, thereby realizing multi-site transmission.

[0065] In one possible implementation, if the first PUCCH is a single-beam PUCCH, the first communication device determines the beam used by the first PUCCH according to a first rule, including:

[0066] The first communication device determines that the beam used by the first PUCCH is the first beam; or,

[0067] The first communication device determines that the beam used by the first PUCCH is the second beam; or,

[0068] If the beam currently used by the first PUCCH belongs to the same beam set as the first beam, the first communication device determines to update the beam currently used by the first PUCCH to the first beam; if the beam currently used by the first PUCCH belongs to the same beam set as the second beam, the first communication device determines to update the beam currently used by the first PUCCH to the second beam.

[0069] In the above implementation, for the case where the first PUCCH is a single-beam PUCCH, a specific method is provided for the first communication device to determine the beam used by the first PUCCH. This ensures the first communication device correctly determines the beam used by the first PUCCH, facilitating the selection of a suitable beam for transmission and thus improving communication performance. For example, beams used by different stations may be configured in different beam sets; in other words, beams in the same beam set belong to the same station. If the beam currently used by the first PUCCH belongs to the same beam set as the first beam, then the first PUCCH is preferentially transmitted using the same station. Therefore, the beam currently used by the first PUCCH is updated to the first beam. The same principle applies to the second beam, and will not be elaborated further here.

[0070] In another possible implementation, if the first PUCCH is a multi-beam PUCCH, the first communication device determines the beam used by the first PUCCH according to the first rule, including: the first communication device determines that the beam used by the first PUCCH is the first beam and the second beam.

[0071] In this implementation, when the first PUCCH is a multi-beam PUCCH, the first PUCCH can directly use the first and second beams. For example, the first and second beams are the beams used by two stations, and the terminal device transmits the first PUCCH with the two stations through the corresponding beams, thereby realizing multi-site transmission.

[0072] Another possible implementation method further includes: a first communication device receiving a fourth MAC CE from a second communication device, the fourth MAC CE including an index of the first PUCCH; the first communication device determining the beam used by the first PUCCH according to a first rule, including:

[0073] If the fourth MAC CE is a first type of MAC CE, and the fourth MAC CE includes fourth beam indication information used to indicate the first beam, then the first communication device determines that at any time within a second time period, the first PUCCH uses the first common beam of two common beams of the same type that are active at that time; the second time period is the time interval between the effective time of the beam indicated by the fourth MAC CE and the effective time of the beam indicated by the fifth MAC CE; the fifth MAC CE is the most recently received MAC CE after the first communication device receives the fourth MAC CE, used to indicate the beam used by the first PUCCH; or,

[0074] If the fourth MAC CE is a first type of MAC CE, and the fourth MAC CE includes fourth beam indication information that indicates the second beam, then the first communication device determines that at any time within the second time period, the first PUCCH uses the second common beam of the two common beams of the same type that are active at that time; or,

[0075] If the fourth MAC CE is a second type of MAC CE, and the fourth MAC CE includes a fifth beam indication information and a sixth beam indication information, the fifth beam indication information indicating the first beam and the sixth beam indication information indicating the second beam, then the first communication device determines that at any time within the second time period, the first PUCCH uses two common beams of the same type that are effective at that time.

[0076] In the above implementation, the first communication device can determine the specific method for determining the beam used by the first PUCCH in conjunction with the fourth MAC CE. This allows the first communication device to correctly determine the beam used by the first PUCCH, facilitating the selection of a suitable beam for transmission and thus improving communication transmission performance.

[0077] In another possible implementation, before the first communication device determines the beam used by the first PUCCH according to the first rule, the method further includes:

[0078] The first communication device determines the type of the first PUCCH, which includes a single-beam PUCCH or a multi-beam PUCCH. The single-beam PUCCH uses one beam, and the multi-beam PUCCH uses more than one beam.

[0079] In another possible implementation, the first communication device determines the type of the first PUCCH, including:

[0080] The first communication device determines the type of the first PUCCH based on the configuration parameters in the first PUCCH; or...

[0081] The first communication device receives first indication information from the second communication device; the first indication information is used to indicate whether the first PUCCH is allowed to use multiple beams, or to indicate the type of the first PUCCH; or...

[0082] The first communication device determines the type of the first PUCCH based on the number of beams currently used by the first PUCCH; or,

[0083] The first communication device receives a sixth MAC CE from the second communication device. The sixth MAC CE is used to indicate the type of the first PUCCH, or to indicate the number of beams used by the first PUCCH, which may be one beam or two beams, or to indicate the beams used by the first PUCCH, which may include a first beam and / or a second beam; or...

[0084] The first communication device receives a fourth MAC CE from the second communication device; the first communication device determines the type of the first PUCCH based on the type of the fourth MAC CE.

[0085] In another possible implementation, the first communication device determines the type of the first PUCCH based on the type of the fourth MAC CE, including:

[0086] If the fourth MAC CE is a first type MAC CE, then the first communication device determines that the first PUCCH is a single-beam PUCCH; or, if the fourth MAC CE is a second type MAC CE, then the first communication device determines that the first PUCCH is a multi-beam PUCCH. The first type MAC CE is used to indicate a single beam, and the second type MAC CE is used to indicate multiple beams.

[0087] In another possible implementation, if the network device configures two control resource set groups for the terminal device; the first communication device determines the beam used by the first PUCCH according to the first rule, including:

[0088] If the first PUCCH is associated with the packet index of the first control resource set packet in the two control resource set packets, then the first communication device determines that the beam used by the first PUCCH is the first beam; if the first PUCCH is associated with the packet index of the second control resource set packet in the two control resource set packets, then the first communication device determines that the beam used by the first PUCCH is the second beam.

[0089] Wherein, the first control resource set group is the control resource set group with the smaller grouping index among the two control resource set groups, and the second control resource set group is the control resource set group with the larger grouping index among the two control resource set groups; or, the first control resource set group is the control resource set group with the larger grouping index among the two control resource set groups, and the second control resource set group is the control resource set group with the smaller grouping index among the two control resource set groups.

[0090] In the above implementation, for cases where the network device configures two control resource set groups for the terminal device, a specific method is provided for the first communication device to determine the beam used by the first PUCCH, so that the first communication device can correctly determine the beam used by the first PUCCH, thereby improving communication transmission performance. For example, in a multi-site transmission scenario, the first communication device can determine the beams used by the multiple PUCCHs through the technical solution of this application, thereby realizing multi-site transmission.

[0091] In another possible implementation, the first communication device includes a network device or a terminal device.

[0092] In another possible implementation, the first communication device determines the first beam and the second beam, including:

[0093] A first communication device receives second indication information from a second communication device. The second indication information is used to indicate a first beam and a second beam. The first communication device is a terminal device, and the second communication device is a network device. In this implementation, the first communication device can determine the first beam and the second beam through the second indication information from the second communication device.

[0094] A third aspect of this application provides a method for using a beam, comprising:

[0095] The first communication device determines a first beam and a second beam, wherein the first beam and the second beam are beams of the same type; the first communication device receives third indication information from the second communication device, the third indication information being used to indicate any of the following:

[0096] The first shared channel uses the first beam; or...

[0097] The first shared channel uses the second beam; or...

[0098] The first shared channel uses the first beam and the second beam; or,

[0099] The first shared channel does not use the first beam and the second beam.

[0100] In the above technical solution, the first communication device determines a first beam and a second beam, which are beams of the same type. For example, if the first shared channel is a physical downlink sharing channel (PDSCH), then the first beam and the second beam are two downlink common beams or two uplink common beams. If the first shared channel is a physical uplink sharing channel (PUSCH), then the first beam and the second beam are two uplink common beams or two uplink common beams. The first communication device can determine the beam used for the first shared channel based on third indication information, thereby enabling the first communication device to correctly apply the beam indicated by the network device to the first shared channel, so that the first shared channel can use the correct beam for transmission, thereby improving communication transmission performance. The second communication device can flexibly instruct the first communication device to use the first beam and / or the second beam for transmission on the first shared channel through 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 through the technical solution of this application, thereby realizing multi-site transmission.

[0101] In one possible implementation, the third indication information is carried in downlink control information (DCI). In this implementation, the second communication device can send the third indication information to the first communication device via the DCI, thus providing a specific carrier for sending indication information.

[0102] In another possible implementation, if the value of the third indication information is "00", the third indication information is used to indicate that the first shared channel uses the first beam; if the value of the third indication information is "01", the third indication information is used to indicate that the first shared channel uses the second beam; if the value of the third indication information is "10", the third indication information is used to indicate that the first shared channel uses both the first and second beams; if the value of the third indication information is "11", the third indication information is used to indicate that the first shared channel does not use either the first or second beam.

[0103] The above implementation method shows some possible values ​​of the third indication information and the meaning of the corresponding indication, which facilitates the implementation of the scheme.

[0104] In another possible implementation, the first communication device includes a network device or a terminal device.

[0105] In another possible implementation, the first communication device determines the first beam and the second beam, including:

[0106] A first communication device receives second indication information from a second communication device. The second indication information is used to indicate a first beam and a second beam. The first communication device is a terminal device, and the second communication device is a network device. In this implementation, the first communication device can determine the first beam and the second beam through the second indication information from the second communication device.

[0107] The fourth aspect of this application provides a method for using a beam, including:

[0108] The first communication device determines a first beam and a second beam, wherein the first beam and the second beam are beams of the same type; the first communication device determines the beam used for the first sounding reference signal (SRS) resource according to a first rule, wherein the beam used for the first SRS resource is the first beam and / or the second beam.

[0109] In the above technical solution, the first communication device determines a first beam and a second beam, which are beams of the same type. For example, the first beam and the second beam are two 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 by the first SRS resource based on a first rule, thereby enabling the first communication device to correctly apply the beam indicated by the network device to the transmission of the corresponding reference signal, improving communication transmission performance.

[0110] In one possible implementation, if the network device configures two SRS resource sets of the same type for the terminal device, the first communication device determines the beam used by the first SRS resource according to a first rule, including:

[0111] If the first SRS resource belongs to the SRS resource corresponding to the first SRS resource set in the two SRS resource sets, the first communication device determines that the beam used by the first SRS resource is the first beam; if the first SRS resource belongs to the SRS resource corresponding to the second SRS resource set in the two SRS resource sets, the first communication device determines that the beam used by the first SRS resource is the second beam.

[0112] Wherein, the first SRS resource set is the SRS resource set with the smaller index among the two SRS resource sets, and the second SRS resource set is the SRS resource set with the larger index among the two SRS resource sets; or, the first SRS resource set is the SRS resource set with the larger index among the two SRS resource sets, and the second SRS resource set is the SRS resource set with the smaller index among the two SRS resource sets; or, the first SRS resource set is the SRS resource set with the earlier configuration order among the two SRS resource sets, and the second SRS resource set is the SRS resource set with the later configuration order among the two SRS resource sets; or, the first SRS resource set is the SRS resource set with the later configuration order among the two SRS resource sets, and the second SRS resource set is the SRS resource set with the earlier configuration order among the two SRS resource sets.

[0113] In the above implementation, for cases where the network device configures two sets of SRS resources of the same type for the terminal device, a specific method is provided for the first communication device to determine the beam used for the first SRS resource, so that the first communication device can use the correct beam to transmit the first SRS resource, thereby improving the communication transmission performance.

[0114] In another possible implementation, if the network device configures an SRS resource set for the terminal device, and the first SRS resource belongs to that SRS resource set, the first communication device determines the beam used by the first SRS resource according to a first rule, including:

[0115] The first communication device determines that the beam used for the first SRS resource is the first beam; or,

[0116] The first communication device determines that the beam used for the first SRS resource is the second beam; or,

[0117] If the beam currently used by the first SRS resource belongs to the same beam set as the first beam, the first communication device updates the beam currently used by the first SRS resource to the first beam; if the beam currently used by the first SRS resource belongs to the same beam set as the second beam, the first communication device updates the beam currently used by the first SRS resource to the second beam; or,

[0118] A first communication device receives a first Radio Resource Control (RRC) message or a first MAC CE from a second communication device; the first RRC message or the first MAC CE is used to indicate that the first SRS resource uses one or both of a first beam and a second beam; the first communication device determines the beam used by the first SRS resource based on the first RRC message or the first MAC CE; or,

[0119] The first communication device receives a second RRC message or a second MAC CE from the second communication device; the first RRC message or the second MAC CE is used to indicate whether the first SRS resource uses a first beam, or a second beam, or both a first beam and a second beam; the first communication device determines the beam used by the first SRS resource based on the second RRC message or the second MAC CE.

[0120] In the above implementation, for cases where the network device configures an SRS resource set for the terminal device, a specific method is provided for the first communication device to determine the beam used by the first SRS resource. This enables the first communication device to correctly determine the beam used by the first SRS resource, facilitating the selection of a suitable beam for transmission and thus improving communication transmission performance. For example, beams used by different sites may be configured in different beam sets; in other words, beams in the same beam set belong to the same site. If the beam currently used by the first SRS resource belongs to the same beam set as the first beam, then the first SRS resource is preferentially transmitted using the same site. Therefore, the beam currently used by the first SRS resource is updated to the first beam. The same principle applies to the second beam, and will not be elaborated further here.

[0121] In another possible implementation, the first communication device includes a network device or a terminal device.

[0122] In another possible implementation, the first communication device determines the first beam and the second beam, including:

[0123] A first communication device receives second indication information from a second communication device. The second indication information is used to indicate a first beam and a second beam. The first communication device is a terminal device, and the second communication device is a network device. In this implementation, the first communication device can determine the first beam and the second beam through the second indication information from the second communication device.

[0124] The fifth aspect of this application provides a method for using a beam, including:

[0125] The first communication device determines a first beam and a second beam, wherein the first beam and the second beam are beams of the same type; the first communication device determines the beam used by the first channel state information-reference signal (CSI-RS) resource according to a first rule, wherein the beam used by the first CSI-RS resource is the first beam and / or the second beam.

[0126] In the above technical solution, the first communication device determines a first beam and a second beam, which are beams of the same type. For example, the first beam and the second beam are two 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 by the first CSI-RS resource based on a first rule, thereby enabling the first communication device to correctly apply the beam indicated by the network device to the transmission of the corresponding reference signal, improving communication transmission performance.

[0127] In one possible implementation, if the network device configures two sets of CSI-RS resources of the same type for the terminal device, the first communication device determines the beam used by the first CSI-RS resource according to a first rule, including:

[0128] If the first CSI-RS resource belongs to the CSI-RS resource corresponding to the first CSI-RS resource set in the two CSI-RS resource sets, the first communication device determines that the beam used by the first CSI-RS resource is the first beam; if the first CSI-RS resource belongs to the CSI-RS resource corresponding to the second CSI-RS resource set in the two CSI-RS resource sets, the first communication device determines that the beam used by the first CSI-RS resource is the second beam.

[0129] Wherein, the first CSI-RS resource set is the CSI-RS resource set with the smaller index among the two CSI-RS resource sets, and the second CSI-RS resource set is the CSI-RS resource set with the larger index among the two CSI-RS resource sets; or, the first CSI-RS resource set is the CSI-RS resource set with the larger index among the two CSI-RS resource sets, and the second CSI-RS resource set is the CSI-RS resource set with the smaller index among the two CSI-RS resource sets; or, the first CSI-RS resource set is the CSI-RS resource set with the earlier configuration order among the two CSI-RS resource sets, and the second CSI-RS resource set is the CSI-RS resource set with the later configuration order among the two CSI-RS resource sets; or, the first CSI-RS resource set is the CSI-RS resource set with the later configuration order among the two CSI-RS resource sets, and the second CSI-RS resource set is the CSI-RS resource set with the earlier configuration order among the two CSI-RS resource sets.

[0130] In the above implementation, for cases where the network device configures two sets of CSI-RS resources of the same type for the terminal device, a specific method is provided for the first communication device to determine the beam used for the first CSI-RS resource, so that the first communication device can use the correct beam to transmit the first CSI-RS resource, thereby improving the communication transmission performance.

[0131] In another possible implementation, if the network device configures a CSI-RS resource set for the terminal device, and the first CSI-RS resource belongs to this CSI-RS resource set, the first communication device determines the beam used by the first CSI-RS resource according to a first rule, including:

[0132] The first communication device determines that the beam used for the first CSI-RS resource is the first beam; or,

[0133] The first communication device determines that the beam used for the first CSI-RS resource is the second beam; or,

[0134] If the beam currently used by the first CSI-RS resource belongs to the same beam set as the first beam, the first communication device updates the beam currently used by the first CSI-RS resource to the first beam; if the beam currently used by the first CSI-RS resource belongs to the same beam set as the second beam, the first communication device updates the beam currently used by the first CSI-RS resource to the second beam; or,

[0135] A first communication device receives a first RRC message or a first MAC CE from a second communication device; the first RRC message or the first MAC CE is used to indicate that the first CSI-RS resource uses one or both of a first beam and a second beam; the first communication device determines the beam used by the first CSI-RS resource based on the first RRC message or the first MAC CE; or,

[0136] The first communication device receives a second RRC message or a second MAC CE from the second communication device; the first RRC message or the second MAC CE is used to indicate whether the first CSI-RS resource uses a first beam, or a second beam, or both a first beam and a second beam; the first communication device determines the beam used by the first CSI-RS resource based on the second RRC message or the second MAC CE.

[0137] In the above implementation, for cases where the network device configures a CSI-RS resource set for the terminal device, a specific method is provided for the first communication device to determine the beam used by the first CSI-RS resource. This enables the first communication device to correctly determine the beam used by the first CSI-RS resource, facilitating the selection of a suitable beam for transmission and thus improving communication transmission performance. For example, beams used by different sites may be configured in different beam sets; in other words, beams in the same beam set belong to the same site. If the beam currently used by the first CSI-RS resource belongs to the same beam set as the first beam, then the first CSI-RS resource is preferentially transmitted using the same site. Therefore, the beam currently used by the first CSI-RS resource is updated to the first beam. The same principle applies to the second beam, and will not be elaborated further here.

[0138] In another possible implementation, the first communication device includes a network device or a terminal device.

[0139] In another possible implementation, the first communication device determines the first beam and the second beam, including:

[0140] A first communication device receives second indication information from a second communication device. The second indication information is used to indicate a first beam and a second beam. The first communication device is a terminal device, and the second communication device is a network device. In this implementation, the first communication device can determine the first beam and the second beam through the second indication information from the second communication device.

[0141] Based on any one of the first to fifth aspects, 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 include any one of the following:

[0142] The first beam is the beam with the smaller index of the two beams, and the second beam is the beam with the larger index of the two beams; or,

[0143] The first beam is the beam with the smaller corresponding Transmission Configuration Indicator (TCI) field value among the two beams, and the second beam is the beam with the larger corresponding TCI field value among the two beams; or,

[0144] The first beam is the beam that appears earlier in the configuration order of the two beams, and the second beam is the beam that appears later in the configuration order of the two beams; or...

[0145] The first beam belongs to the first beam set, and the second beam belongs to the second beam set. The first and second beam sets 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 the smaller index among the two beam sets of the same type, and the second beam set is the beam set with the larger index among the two beam sets; or, the first beam set is the beam set configured earlier in the order among the two beam sets of the same type, and the second beam set is the beam set configured later in the order among the two beam sets; or...

[0146] The first beam belongs to the first beam group, and the second beam belongs to the second beam group. The first and second beam groups are two beam groups of the same type activated by the network device via MAC CE. The first beam group is the beam group with the smaller index among the two beam groups of the same type, and the second beam group is the beam group with the larger index among the two beam groups of the same type; or, the first beam group is the beam group of the same type that is activated earlier in the MAC CE activation order, and the second beam group is the beam group of the same type that is activated later in the MAC CE activation order; or...

[0147] 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; or,

[0148] The first beam is the beam corresponding to the first portion of the field values ​​in the TCI field of the DCI, and the second beam is the beam corresponding to the second portion of the field values ​​in the TCI field of the DCI; the first portion of field values ​​corresponds to a beam group, and the second portion of field values ​​corresponds to a second beam group; the first communication device determines the first beam from the first beam group using the first portion of field values, and determines the second beam from the second beam group using the second portion of field values; or...

[0149] The first beam and the second beam are two beams of the same type indicated by the same TCI field in the DCI, wherein the first beam is the first of two beams of the same type indicated by the same TCI field, and the second beam is the second of two beams of the same type indicated by the same TCI field; or,

[0150] The first beam is the beam that appears earlier in the activation order of the MAC CE among two beams of the same type; the second beam is the beam that appears later in the activation order of the MAC CE among two beams of the same type; or,

[0151] 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 by the PDCCH corresponding to the first control resource set packet among the two control resource set packets 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 packet among the two control resource set packets. The first control resource set packet is the control resource set packet with the smaller packet index among the two control resource set packets, and the second control resource set packet is the control resource set packet with the larger packet index among the two control resource set packets. Alternatively, the value of a field or a portion of bits of a field in the first DCI is the first value, and the value of a field or a portion of bits of a field in the second DCI is the second value.

[0152] The above implementation illustrates some possible ways to distinguish between the first beam and the second beam, for the first communication device to differentiate 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 can be represented in any of the ways shown above.

[0153] A sixth aspect of this application provides a communication device, comprising:

[0154] The processing module is used to determine a first beam and a second beam, wherein the first beam and the second beam are beams of the same type; and to determine the beam used by the first control resource set according to a first rule, wherein the beam used by the first control resource set is the first beam and / or the second beam.

[0155] In one possible implementation, if 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 used for:

[0156] If the first control resource set belongs to the first control resource set group in the two control resource set groups, the beam used by the first control resource set is determined to be the first beam; if the first control resource set belongs to the second control resource set group in the two control resource set groups, the beam used by the first control resource set is determined to be the second beam.

[0157] Wherein, the first control resource set group is the control resource set group with the smaller grouping index among the two control resource set groups, and the second control resource set group is the control resource set group with the larger grouping index among the two control resource set groups; or, the first control resource set group is the control resource set group with the larger grouping index among the two control resource set groups, and the second control resource set group is the control resource set group with the smaller grouping index among the two control resource set groups.

[0158] In another possible implementation, if the network device configures two sets of control resources for the terminal device, and these two sets of control resources are used for repeated transmission of the control channel, the processing module is specifically used for:

[0159] If the first control resource set is the control resource set with the smaller index among the two control resource sets, the beam used by the first control resource set is determined to be the first beam; if the first control resource set is the control resource set with the larger index among the two control resource sets, the beam used by the first control resource set is determined to be the second beam; or...

[0160] If the first control resource set is the control resource set that is configured earlier in the two control resource sets, the beam used by the first control resource set is determined to be the first beam; if the first control resource set is the control resource set that is configured later in the two control resource sets, the beam used by the first control resource set is determined to be the second beam.

[0161] In another possible implementation, if the network device configures two sets of control resources for the terminal device, and these two sets of control resources are used for repeated transmission of the control channel, the processing module is specifically used for:

[0162] If the first control resource set is the control resource set with the larger index among the two control resource sets, the beam used by the first control resource set is determined to be the first beam; if the first control resource set is the control resource set with the smaller index among the two control resource sets, the beam used by the first control resource set is determined to be the second beam; or...

[0163] If the first control resource set is the control resource set configured later in the two control resource sets, the beam used by the first control resource set is determined to be the first beam; if the first control resource set is the control resource set configured earlier in the two control resource sets, the beam used by the first control resource set is determined to be the second beam.

[0164] In another possible implementation, the two sets of control resources used for repeated transmission of the control channel satisfy any of the following conditions:

[0165] The network device configures two control resource sets for the terminal device, and these two control resource sets belong to different control resource set groups; or,

[0166] 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 is less than the index of the control resource set in the second control resource set group; or, the configuration order of the control resource sets in the first control resource set group precedes the configuration order of the control resource sets in the second control resource set group; wherein, the first control resource set group is the one with the smaller group index, and the second control resource set group is the one with the larger group index; or...

[0167] 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 is greater than the index of the control resource set in the second control resource set group; or, the configuration order of the control resource sets in the first control resource set group is after the configuration order of the control resource sets in the second control resource set group; wherein, the first control resource set group is the one with the smaller group index, and the second control resource set group is the one with the larger group index; or...

[0168] 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.

[0169] In another possible implementation, if 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 the first control resource set belongs to one of the one or more single-beam control resource sets, the processing module is specifically used for:

[0170] The beam used by the first control resource set is determined to be the first beam; or,

[0171] The beam used for the first set of control resources is determined to be the second beam; or,

[0172] If the beam currently used by the first control resource set belongs to the same beam set as the first beam, it is determined that the beam currently used by the first control resource set will be updated to the first beam. If the beam currently used by the first control resource set belongs to the same beam set as the second beam, it is determined that the beam currently used by the first control resource set will be updated to the second beam.

[0173] In another possible implementation, the first set of control resources is not used for repeated transmissions of the control channel.

[0174] In another possible implementation, if the network device configures a control resource set group for the 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 processing module is specifically used for:

[0175] The first control resource set is determined to use the first beam and the second beam.

[0176] In another possible implementation, the transceiver module is further configured to: receive a first MACCE from a second communication device, the first MACCE including an index of a first control resource set; the processing module is specifically configured to:

[0177] 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 first beam, then it is determined that at any time within a first time period, the first control resource set adopts the first common beam among two common beams of the same type that are effective at that time. The first time period is the time interval between the effective time of the beam indicated by the first MAC CE and the effective time of the beam indicated by the second MAC CE. The second MAC CE is the most recently received MAC CE after the communication device receives the first MAC CE, used to indicate the beam adopted by the first control resource set; or,

[0178] 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, then it is determined that at any time within the first time period, the first control resource set adopts the second common beam of the two common beams of the same type that are effective at that time; or,

[0179] If the first MAC CE is a second type of MAC CE, and the first MAC CE includes second beam indication information and third beam indication information, the second beam indication information indicates the first beam, and the third beam indication information indicates the second beam, then it is determined that at any time within the first time period, the first control resource set adopts two common beams of the same type that are effective at any time.

[0180] In another possible implementation, the processing module is also used for:

[0181] The type of the first control resource set is determined. The type of the first control resource set includes: a single-beam control resource set or a multi-beam control resource set.

[0182] In another possible implementation, the processing module is specifically used for:

[0183] The type of the first control resource set is determined based on the configuration parameters in the first control resource set; or...

[0184] The system receives first indication information from a second communication device. This first indication information indicates whether the first control resource set is allowed to use multiple beams, or it 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.

[0185] The type of the first control resource set is determined based on the number of beams currently used in the first control resource set; or,

[0186] Receive a third MAC CE from the second communication device, the third MAC CE being used to indicate the type of the first control resource set, or, the third MAC CE being used to indicate the number of beams used by the first control resource set, the number of beams including one beam or two beams; or, the third MAC CE being used to indicate the beams used by the first control resource set, the beams used by the first control resource set including a first beam and / or a second beam; or,

[0187] Receive a first MAC CE from a second communication device; determine the type of a first control resource set based on the type of the first MAC CE.

[0188] In another possible implementation, the processing module is specifically used for:

[0189] If the first MAC CE is a first type of MAC CE, then the first control resource set is determined to be a single-beam control resource set; or, if the first MAC CE is a second type of MAC CE, then the first control resource set is determined to be a multi-beam control resource set. The first type of MAC CE is a MAC CE used to indicate a single beam, and the second type of MAC CE is a MAC CE used to indicate multiple beams.

[0190] In another possible implementation, the processing module is specifically used for:

[0191] If the number of beams currently used in the first control resource set is 1, then the type of the first control resource set is determined to be a single-beam control resource set.

[0192] If the number of beams currently used in the first control resource set is greater than 1, then the type of the first control resource set is determined to be a multi-beam control resource set.

[0193] In another possible implementation, the single-beam control resource set currently uses 1 beam, while the multi-beam control resource set currently uses more than 1 beam.

[0194] In another possible implementation, the communication device includes network equipment or terminal equipment.

[0195] In another possible implementation, the processing module is specifically used for:

[0196] The device receives second indication information from a second communication device, which is used to indicate a first beam and a second beam. The communication device is a terminal device, and the second communication device is a network device.

[0197] A seventh aspect of this application provides a communication device, comprising:

[0198] The processing module is used to determine a first beam and a second beam, wherein the first beam and the second beam are beams of the same type; and to determine the beam used by the first PUCCH according to a first rule, wherein the beam used by the first PUCCH is the first beam and / or the second beam.

[0199] In one possible implementation, if the first PUCCH is a single-beam PUCCH, the processing module is specifically used for:

[0200] The beam used by the first PUCCH is determined to be the first beam; or,

[0201] The beam used by the first PUCCH is determined to be the second beam; or,

[0202] If the beam currently used by the first PUCCH belongs to the same beam set as the first beam, it is determined that the beam currently used by the first PUCCH will be updated to the first beam; if the beam currently used by the first PUCCH belongs to the same beam set as the second beam, it is determined that the beam currently used by the first PUCCH will be updated to the second beam.

[0203] In another possible implementation, if the first PUCCH is a multi-beam PUCCH, the processing module is specifically used for:

[0204] The first PUCCH uses the first beam and the second beam.

[0205] In another possible implementation, the transceiver module is also used to: receive a fourth MACCE from the second communication device, the fourth MACCE including the index of the first PUCCH;

[0206] The processing module is specifically used for:

[0207] If the fourth MAC CE is a first type of MAC CE, and the fourth MAC CE includes fourth beam indication information indicating a first beam, then it is determined that at any time within the second time period, the first PUCCH uses the first common beam of two common beams of the same type that are active at that time; the second time period is the time interval between the effective time of the beam indicated by the fourth MAC CE and the effective time of the beam indicated by the fifth MAC CE; the fifth MAC CE is the most recently received MAC CE after the communication device receives the fourth MAC CE, used to indicate the beam used by the first PUCCH; or,

[0208] If the fourth MAC CE is a first type of MAC CE, and the fourth MAC CE includes fourth beam indication information that indicates the second beam, then it is determined that at any time within the second time period, the first PUCCH uses the second common beam of the two common beams of the same type that are active at that time; or,

[0209] If the fourth MAC CE is a second type of MAC CE, and the fourth MAC CE includes a fifth beam indication information and a sixth beam indication information, with the fifth beam indication information indicating the first beam and the sixth beam indication information indicating the second beam, then it is determined that at any time within the second time period, the first PUCCH adopts the two common beams of the same type that are effective at that time.

[0210] In another possible implementation, the processing module is also used for:

[0211] The type of the first PUCCH is determined. The type of the first PUCCH includes a single-beam PUCCH or a multi-beam PUCCH. The single-beam PUCCH uses 1 beam, and the multi-beam PUCCH uses more than 1 beam.

[0212] In another possible implementation, the processing module is specifically used for:

[0213] The type of the first PUCCH is determined based on the configuration parameters in the first PUCCH; or...

[0214] Receive first indication information from the second communication device; the first indication information is used to indicate whether the first PUCCH is allowed to use multiple beams, or to indicate the type of the first PUCCH; or...

[0215] The type of the first PUCCH is determined based on the number of beams currently used by the first PUCCH; or,

[0216] Receive a sixth MAC CE from the second communication device. The sixth MAC CE is used to indicate the type of the first PUCCH, or to indicate the number of beams used by the first PUCCH, which may be one beam or two beams, or to indicate the beams used by the first PUCCH, which may include a first beam and / or a second beam; or,

[0217] Receive the fourth MAC CE from the second communication device; determine the type of the first PUCCH based on the type of the fourth MAC CE.

[0218] In another possible implementation, the processing module is specifically used for:

[0219] If the fourth MAC CE is a first type MAC CE, then the first PUCCH is determined to be a single-beam PUCCH; or, if the fourth MAC CE is a second type MAC CE, then the first PUCCH is determined to be a multi-beam PUCCH; the first type MAC CE is a MAC CE used to indicate a single beam, and the second type MAC CE is a MAC CE used to indicate multiple beams.

[0220] In another possible implementation, if the network device configures two control resource set groups for the terminal device; the processing module is specifically used for:

[0221] If the first PUCCH is associated with the group index of the first control resource set group in the two control resource set groups, then the beam used by the first PUCCH is determined to be the first beam; if the first PUCCH is associated with the group index of the second control resource set group in the two control resource set groups, then the beam used by the first PUCCH is determined to be the second beam.

[0222] Wherein, the first control resource set group is the control resource set group with the smaller grouping index among the two control resource set groups, and the second control resource set group is the control resource set group with the larger grouping index among the two control resource set groups; or, the first control resource set group is the control resource set group with the larger grouping index among the two control resource set groups, and the second control resource set group is the control resource set group with the smaller grouping index among the two control resource set groups.

[0223] In another possible implementation, the communication device includes network equipment or terminal equipment.

[0224] In another possible implementation, the processing module is specifically used for:

[0225] The device receives second indication information from a second communication device, which is used to indicate a first beam and a second beam. The communication device is a terminal device, and the second communication device is a network device.

[0226] The eighth aspect of this application provides a communication device, comprising:

[0227] The transceiver module is used to determine a first beam and a second beam, wherein the first beam and the second beam are beams of the same type; and to receive third indication information from a second communication device, wherein the third indication information is used to indicate any of the following:

[0228] The first shared channel uses the first beam; or...

[0229] The first shared channel uses the second beam; or...

[0230] The first shared channel uses the first beam and the second beam; or,

[0231] The first shared channel does not use the first beam and the second beam.

[0232] In one possible implementation, the third instruction information is carried in the DCI.

[0233] In another possible implementation, if the value of the third indication information is "00", the third indication information is used to indicate that the first shared channel uses the first beam; if the value of the third indication information is "01", the third indication information is used to indicate that the first shared channel uses the second beam; if the value of the third indication information is "10", the third indication information is used to indicate that the first shared channel uses both the first and second beams; if the value of the third indication information is "11", the third indication information is used to indicate that the first shared channel does not use either the first or second beam.

[0234] In another possible implementation, the communication device includes network equipment or terminal equipment.

[0235] In another possible implementation, the processing module is specifically used for:

[0236] The device receives second indication information from a second communication device, which is used to indicate a first beam and a second beam. The communication device is a terminal device, and the second communication device is a network device.

[0237] The ninth aspect of this application provides a communication device, comprising:

[0238] The processing module is used to determine a first beam and a second beam, wherein the first beam and the second beam are beams of the same type; and to determine the beam used by the first SRS resource according to a first rule, wherein the beam used by the first SRS resource is the first beam and / or the second beam.

[0239] In one possible implementation, if the network device configures two SRS resource sets of the same type for the terminal device, the processing module is specifically used for:

[0240] If the first SRS resource belongs to the SRS resource corresponding to the first SRS resource set in the two SRS resource sets, the beam used by the first SRS resource is determined to be the first beam; if the first SRS resource belongs to the SRS resource corresponding to the second SRS resource set in the two SRS resource sets, the beam used by the first SRS resource is determined to be the second beam.

[0241] Wherein, the first SRS resource set is the SRS resource set with the smaller index among the two SRS resource sets, and the second SRS resource set is the SRS resource set with the larger index among the two SRS resource sets; or, the first SRS resource set is the SRS resource set with the larger index among the two SRS resource sets, and the second SRS resource set is the SRS resource set with the smaller index among the two SRS resource sets; or, the first SRS resource set is the SRS resource set with the earlier configuration order among the two SRS resource sets, and the second SRS resource set is the SRS resource set with the later configuration order among the two SRS resource sets; or, the first SRS resource set is the SRS resource set with the later configuration order among the two SRS resource sets, and the second SRS resource set is the SRS resource set with the earlier configuration order among the two SRS resource sets.

[0242] In another possible implementation, if the network device configures an SRS resource set for the terminal device, and the first SRS resource belongs to the SRS resource set, the processing module is specifically used for:

[0243] The beam used for the first SRS resource is determined to be the first beam; or,

[0244] The beam used for the first SRS resource is determined to be the second beam; or,

[0245] If the beam currently used by the first SRS resource belongs to the same beam set as the first beam, the beam currently used by the first SRS resource is updated to the first beam; if the beam currently used by the first SRS resource belongs to the same beam set as the second beam, the beam currently used by the first SRS resource is updated to the second beam.

[0246] In another possible implementation, the communication device includes network equipment or terminal equipment.

[0247] In another possible implementation, the processing module is specifically used for:

[0248] Receive second indication information from the second communication device, the second indication information being used to indicate the first beam and the second beam.

[0249] The tenth aspect of this application provides a communication device, comprising:

[0250] The processing module is used to determine a first beam and a second beam, wherein the first beam and the second beam are beams of the same type; and to determine the beam used by the first CSI-RS resource according to a first rule, wherein the beam used by the first CSI-RS resource is the first beam and / or the second beam.

[0251] In one possible implementation, if the network device configures two sets of CSI-RS resources of the same type for the terminal device, the processing module is specifically used for:

[0252] If the first CSI-RS resource belongs to the CSI-RS resource corresponding to the first CSI-RS resource set in the two CSI-RS resource sets, the beam used by the first CSI-RS resource is determined to be the first beam; if the first CSI-RS resource belongs to the CSI-RS resource corresponding to the second CSI-RS resource set in the two CSI-RS resource sets, the beam used by the first CSI-RS resource is determined to be the second beam.

[0253] Wherein, the first CSI-RS resource set is the CSI-RS resource set with the smaller index among the two CSI-RS resource sets, and the second CSI-RS resource set is the CSI-RS resource set with the larger index among the two CSI-RS resource sets; or, the first CSI-RS resource set is the CSI-RS resource set with the larger index among the two CSI-RS resource sets, and the second CSI-RS resource set is the CSI-RS resource set with the smaller index among the two CSI-RS resource sets; or, the first CSI-RS resource set is the CSI-RS resource set with the earlier configuration order among the two CSI-RS resource sets, and the second CSI-RS resource set is the CSI-RS resource set with the later configuration order among the two CSI-RS resource sets; or, the first CSI-RS resource set is the CSI-RS resource set with the later configuration order among the two CSI-RS resource sets, and the second CSI-RS resource set is the CSI-RS resource set with the earlier configuration order among the two CSI-RS resource sets.

[0254] In another possible implementation, if the network device configures a CSI-RS resource set for the terminal device, and the first CSI-RS resource belongs to the CSI-RS resource set, the processing module is specifically used for:

[0255] The beam used for the first CSI-RS resource is determined to be the first beam; or,

[0256] The beam used for the first CSI-RS resource is determined to be the second beam; or,

[0257] If the beam currently used by the first CSI-RS resource belongs to the same beam set as the first beam, the beam currently used by the first CSI-RS resource will be updated to the first beam; if the beam currently used by the first CSI-RS resource belongs to the same beam set as the second beam, the beam currently used by the first CSI-RS resource will be updated to the second beam.

[0258] In another possible implementation, the communication device includes network equipment or terminal equipment.

[0259] In another possible implementation, the processing module is specifically used for:

[0260] Receive second indication information from the second communication device, the second indication information being used to indicate the first beam and the second beam.

[0261] Based on any one of the sixth to tenth aspects, in one 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 include any one of the following:

[0262] The first beam is the beam with the smaller index of the two beams, and the second beam is the beam with the larger index of the two beams; or,

[0263] The first beam is the beam with the smaller corresponding TCI field value among the two beams, and the second beam is the beam with the larger corresponding TCI field value among the two beams; or,

[0264] The first beam is the beam that appears earlier in the configuration order of the two beams, and the second beam is the beam that appears later in the configuration order of the two beams; or...

[0265] The first beam belongs to the first beam set, and the second beam belongs to the second beam set. The first and second beam sets 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 the smaller index among the two beam sets of the same type, and the second beam set is the beam set with the larger index among the two beam sets; or, the first beam set is the beam set configured earlier in the order among the two beam sets of the same type, and the second beam set is the beam set configured later in the order among the two beam sets; or...

[0266] The first beam belongs to the first beam group, and the second beam belongs to the second beam group. The first and second beam groups are two beam groups of the same type activated by the network device via MAC CE. The first beam group is the beam group with the smaller index among the two beam groups of the same type, and the second beam group is the beam group with the larger index among the two beam groups of the same type; or, the first beam group is the beam group of the same type that is activated earlier in the MAC CE activation order, and the second beam group is the beam group of the same type that is activated later in the MAC CE activation order; or...

[0267] 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 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; or,

[0268] The first beam is the beam corresponding to the first portion of the field values ​​in the TCI field of the DCI, and the second beam is the beam corresponding to the second portion of the field values ​​in the TCI field of the DCI; the first portion of field values ​​corresponds to a beam group, and the second portion of field values ​​corresponds to a second beam group; the communication device determines the first beam from the first beam group using the first portion of field values, and determines the second beam from the second beam group using the second portion of field values; or...

[0269] The first beam and the second beam are two beams of the same type indicated by the same TCI field in the DCI, wherein the first beam is the first of two beams of the same type indicated by the same TCI field, and the second beam is the second of two beams of the same type indicated by the same TCI field; or,

[0270] The first beam is the beam that appears earlier in the activation order of the MAC CE among two beams of the same type; the second beam is the beam that appears later in the activation order of the MAC CE among two beams of the same type; or,

[0271] 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 by the PDCCH corresponding to the first control resource set packet among the two control resource set packets 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 packet among the two control resource set packets. The first control resource set packet is the control resource set packet with the smaller packet index among the two control resource set packets, and the second control resource set packet is the control resource set packet with the larger packet index among the two control resource set packets. Alternatively, the value of a field or a portion of bits of a field in the first DCI is the first value, and the value of a field or a portion of bits of a field in the second DCI is the second value.

[0272] The above implementation illustrates some possible ways to distinguish between the first and second beams, allowing communication devices to differentiate between two beams of the same type indicated by network equipment. For example, in a multi-site transmission scenario, the first and second beams could be beams used by two different sites. Specifically, the first and second beams can be represented in any of the ways shown above.

[0273] The eleventh aspect of this application provides a communication device, comprising a processor and a memory. The memory stores computer programs or computer instructions, and the processor is used to call and execute the computer programs or computer instructions stored in the memory, causing the processor to implement any one of the implementation methods of the first to fifth aspects.

[0274] Optionally, the communication device may also include a transceiver, and the processor is used to control the transceiver to send and receive signals.

[0275] The twelfth aspect of this application provides a communication device including a processor. The processor is configured to invoke a computer program or computer instructions stored in memory, causing the processor to implement any one of the implementations of the first to fifth aspects; or, the processor is configured to execute any one of the implementations of the first to fifth aspects.

[0276] Optionally, the communication device may also include a transceiver, and the processor is used to control the transceiver to send and receive signals.

[0277] The thirteenth aspect of this application provides a communication device including a processor for executing any implementation of any one of the first to fifth aspects.

[0278] The fourteenth aspect of this application provides a computer program product including instructions, characterized in that, when run on a computer, it causes the computer to perform any of the implementations of any one of the first to fifth aspects.

[0279] The fifteenth aspect of this application provides a computer-readable storage medium including computer instructions that, when executed on a computer, cause the computer to perform any of the implementations of any one of the first to fifth aspects.

[0280] The sixteenth aspect of this application provides a chip device including a processor for calling a computer program or computer instructions in the memory to cause the processor to execute any of the implementations described in any of the first to fifth aspects.

[0281] Optionally, the processor is coupled to the memory via an interface.

[0282] As can be seen from the above technical solutions, the embodiments of this application have the following advantages:

[0283] As can be seen from the above technical solution, the first communication device determines a first beam and a second beam, which are beams of the same type. 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 by the first control resource set according to a first rule, and the beam used by the first control resource set is the first beam and / or the second beam. Therefore, through the technical solution of this application, the first communication device can determine the beam used by the first control resource set from the first beam and the second beam based on the first rule, thereby enabling the first communication device to correctly apply 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 can use the correct beam for transmission, thereby improving communication transmission performance. For example, in a multi-site transmission scenario, the first communication device, through the technical solution of this application, determines to correctly apply the first beam and the second beam to the corresponding physical downlink control channel, thereby realizing multi-site transmission. Attached Figure Description

[0284] Figure 1 This is a schematic diagram of a communication system according to an embodiment of this application;

[0285] Figure 2 This is another schematic diagram of the communication system according to an embodiment of this application;

[0286] Figure 3 This is a schematic diagram of a MAC CE for activating TCI, applicable to the beam usage method of this application embodiment;

[0287] Figure 4This is a schematic diagram of one embodiment of the beam usage method of this application;

[0288] Figure 5 This is a schematic diagram of a scenario for beam usage method according to an embodiment of this application;

[0289] Figure 6 This is a schematic diagram of another embodiment of the beam usage method of this application;

[0290] Figure 7 This is a schematic diagram of another embodiment of the beam usage method of this application;

[0291] Figure 8 This is a schematic diagram of another embodiment of the beam usage method of this application;

[0292] Figure 9 This is a schematic diagram of another embodiment of the beam usage method of this application;

[0293] Figure 10 This is a schematic diagram of the communication device according to an embodiment of this application;

[0294] Figure 11 This is another structural schematic diagram of the communication device according to an embodiment of this application;

[0295] Figure 12 This is another structural schematic diagram of the communication device according to an embodiment of this application;

[0296] Figure 13 This is another structural schematic diagram of the communication device according to an embodiment of this application;

[0297] Figure 14 This is another structural schematic diagram of the communication device according to an embodiment of this application. Detailed Implementation

[0298] This application provides a beam usage method and related apparatus for a first communication device to determine the beam used by a first control resource set according to a first rule. This enables the first communication device to correctly apply the beam indicated by the network device to the channel corresponding to the control resource set, ensuring that the channel corresponding to the control resource set uses the correct beam for transmission, thereby improving communication transmission performance.

[0299] The technical solutions in this application will now be described with reference to the accompanying drawings.

[0300] The technical solution of this application can be applied to various communication systems. For example, 5G systems, new radio (NR) systems, long term evolution (LTE) systems, LTE frequency division duplex (FDD) systems, LTE time division duplex (TDD) systems, universal mobile telecommunication system (UMTS), mobile communication systems after 5G networks (e.g., 6G mobile communication systems), vehicle-to-everything (V2X) communication systems, etc.

[0301] The communication system to which this application applies includes a first communication device, which is either a terminal device or a network device. Optionally, if the first communication device is a terminal device, the communication system further includes a second communication device, which is either a network device. Unless otherwise specified below, the first communication device can be understood as either a terminal device or a network device.

[0302] The terminal equipment and network equipment of this application are described below.

[0303] The terminal device can be a wireless terminal device capable of receiving network device scheduling and instruction information. The terminal device can be a device that provides voice and / or data connectivity to the user, a handheld device with wireless connectivity, or other processing device connected to a wireless modem.

[0304] Terminal equipment, also known as user equipment (UE), mobile station (MS), or mobile terminal (MT), is a device that includes wireless communication capabilities (providing voice / data connectivity to users). Examples include handheld devices with wireless connectivity and in-vehicle devices. Currently, some examples of terminal equipment include: mobile phones, tablets, laptops, PDAs, mobile internet devices (MIDs), wearable devices, virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, wireless terminals in vehicle-to-everything (V2X) communication, wireless terminals in self-driving cars, wireless terminals in remote medical surgery, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, and wireless terminals in smart homes. For example, wireless terminals in V2X communication can be in-vehicle equipment, vehicle-mounted equipment, in-vehicle modules, or vehicles themselves. In industrial control, wireless terminals can be cameras, robots, etc. In smart homes, wireless terminals can be televisions, air conditioners, robot vacuums, speakers, set-top boxes, etc.

[0305] A network device can be a device within a wireless network. For example, a network device can be a device deployed in a radio access network (RAN) that provides wireless communication capabilities to terminal devices. For instance, a network device can be a RAN node that connects terminal devices to a wireless network; it can also be called an access network device.

[0306] Network equipment includes, but is not limited to: evolved Node B (eNB), radio network controller (RNC), Node B (NB), base station controller (BSC), base transceiver station (BTS), home base station (e.g., home-evolved Node B, or home Node B, HNB), baseband unit (BBU), access point (AP), wireless relay node, wireless backhaul node, transmission point (TP), or transmission and reception point (TRP) in a wireless fidelity (WIFI) system, and can also be network equipment in a 5G mobile communication system. For example, next-generation Node B (gNB), transmission and reception point (TRP), or TP in an NR system; or one or a group of antenna panels (including multiple antenna panels) of a base station in a 5G mobile communication system; or, network equipment can also be network nodes constituting a gNB or transmission point. For example, BBU, or distributed unit (DU), etc.

[0307] In some deployments, a gNB may include a centralized unit (CU) and a dedicated unit (DU). The gNB may also include an active antenna unit (AAU). The CU implements some of the gNB's functions, and the DU implements others. For example, the CU handles non-real-time protocols and services, implementing radio resource control (RRC) and packet data convergence protocol (PDCP) layer functions. The DU handles physical layer protocols and real-time services, implementing radio link control (RLC), MAC, and physical (PHY) layer functions. The AAU implements some physical layer processing functions, radio frequency processing, and active antenna-related functions. Information from the RRC layer ultimately becomes information from the PHY layer, or is derived from PHY layer information. Therefore, in this architecture, higher-layer signaling (such as RRC layer signaling) can be considered to be sent by the DU, or by both the DU and AAU. It is understood that network devices can be one or more of CU nodes, DU nodes, and AAU nodes. In addition, the CU can be classified as a network device in the RAN or as a network device in the core network (CN), and this application does not limit this.

[0308] To facilitate understanding of the technical solutions in the embodiments of this application, the following is combined with... Figure 1 and Figure 2 Two possible communication systems to which the beam usage method provided in the embodiments of this application is applicable are shown.

[0309] Figure 1 This is a schematic diagram of a communication system according to an embodiment of this application. Figure 1 As shown, the communication system includes at least one network device. For example, such as Figure 1 The network device 111 shown, the communication system also includes at least one terminal device. For example, such as... Figure 1 The terminal devices 121 and 122 are shown. Network device 111 can transmit with terminal devices 121 and 122 using beamforming.

[0310] Figure 2 This is another schematic diagram of the communication system according to an embodiment of this application. For example... Figure 2 As shown, the communication system may include at least two network devices. For example, such as Figure 2 Network devices 211, 212, and 213 are shown. The communication system also includes at least one terminal device. For example, such as... Figure 2The terminal device 221 shown. Terminal device 221 can be provided with communication services by multiple network devices. For example, such as... Figure 2 As shown, network device 211 can use beam 1 to transmit with terminal device 221, network device 212 can use beam 2 to transmit with terminal device 221, and network device 213 can use beam 3 to transmit with terminal device 221. In other words, a single terminal device can be provided with communication services simultaneously by multiple network devices.

[0311] To facilitate understanding of the technical solution of this application, some technical terms involved in this application will be introduced below.

[0312] 1. Beam: A beam is a communication resource. A beam can be wide, narrow, or other types of beams, and the technology used to form a beam can be beamforming technology or other techniques. Beamforming technology can specifically be digital beamforming technology, analog beamforming technology, and hybrid digital / analog beamforming technology. Different beams can be considered different resources.

[0313] In the NR protocol, a beam can be referred to as a spatial domain filter, spatial filter, spatial domain parameter, spatial parameter, spatial domain setting, spatial setting, quasi-colocation (QCL) information, QCL hypothesis, or QCL indication, etc. The beam can be indicated by TCI-state parameters or spatial relation parameters. Therefore, in this application, beam can be replaced by spatial domain filter, spatial filter, spatial parameter, spatial parameter, spatial setting, spatial setting, QCL information, QCL hypothesis, QCL indication, TCI-state (including uplink TCI-state and downlink TCI-state), or spatial relation, etc. The above terms are also equivalent to each other. Beam can also be replaced with other beam-related terms, which are not limited herein.

[0314] The beam used to transmit signals can be called a transmission beam (Tx 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 can be indicated by TCI-state.

[0315] The beam used to receive signals can be called a reception beam (Rx beam), a spatial domain reception filter, a spatial reception filter, a spatial domain reception parameter, a spatial domain reception setting, or a spatial reception setting.

[0316] Both transmit and receive beams can be indicated by spatial relation, TCI-state, or SRS resource (indicating the transmit beam using that SRS). Therefore, the transmit beam can also be replaced by an SRS resource.

[0317] The transmitting beam can refer to the distribution of signal strength in different directions in space after a signal is transmitted through an antenna, while the receiving beam can refer to the distribution of signal strength in different directions in space of a wireless signal received from an antenna.

[0318] Furthermore, the beam can be a wide beam, a narrow beam, or other types of beam. The beamforming technology can be beamforming technology or other technologies. Specifically, beamforming technology can be digital beamforming technology, analog beamforming technology, hybrid digital beamforming technology, or hybrid analog beamforming technology, etc.

[0319] Beams are generally associated with resources. For example, during beam measurement, network devices measure different beams using different resources. The terminal device provides feedback on the measured resource quality, allowing the network device to determine the quality of the corresponding beam. During data transmission, beam information is also indicated through its corresponding resource. For instance, network devices use the TCI field in DCI to indicate the PDSCH beam information of the terminal device.

[0320] In one possible implementation, multiple beams with the same or similar communication characteristics are considered as a single beam. A beam may include one or more antenna ports for transmitting data channels, control channels, and probe signals, etc. The one or more antenna ports forming a beam can also be considered as a set of antenna ports.

[0321] 2. Transmission Configuration Indicator State (TCI-state)

[0322] The TCI-state is used to indicate the downlink beam. Network devices can generate different beams pointing in different transmission directions. During downlink data transmission, when a network device uses a specific beam to send data to a terminal device, it needs to inform the terminal device of the information of the transmit beam it is using. This allows the terminal device to use the corresponding receive beam to receive the data sent by the network device. In 3GPP Release 15 (3GPP R15) or 3GPP R16, the network device indicates the relevant information of the transmit beam it is using to the terminal device through the TCI field in the DCI. Specifically, the TCI field is 3 bits in size and can represent 8 different field values ​​(code points). Each value of the TCI field corresponds to an index of the TCI-state, and a TCI-state index can uniquely identify a TCI-state. A TCI-state includes several parameters that determine the relevant information of the transmit beam. The TCI-state is configured by the network device for each terminal device. The structure of the TCI-state is shown below:

[0323]

[0324] Each TCI-state includes its own index tci-StateId and two QCL-Infos. Each QCL-Info includes a cell field and a bwp-Id, indicating which bandwidth part (BWP) of which cell the TCI-state applies to. Different cells or different BWPs within the same cell can be configured with different QCL-Infos. The QCL-Info also includes a reference signal, indicating which reference signal resource it forms a quasi-correspondence with. In 3GPP R15 or 3GPP R16 protocols, beams are generally replaced by other terms. For example, in data transmission and channel measurements, beams correspond to reference signal resources, one beam per reference signal resource. Therefore, indicating which reference signal resource forms a QCL relationship essentially means which beam forms a QCL relationship. A QCL relationship means that two reference signal resources (or two antenna ports, with a one-to-one correspondence between antenna ports and reference signal resources) share certain spatial parameters. Which spatial parameters are identical depends on the type of the QCL-Info, specifically another field, qcl-Type. The qcl-Type can have four values: {typeA, typeB, typeC, typeD}. Taking typeD as an example, typeD indicates that the two reference signal resources have the same spatial reception parameter information, that is, the two beams have the same reception beam. At most one of the two QCL-Info values ​​included in the TCI-state can be TypeD.

[0325] The following example illustrates how network devices based on the 3GPP R15 or 3GPP R16 protocols use TCI-state to indicate the receive beam information of the data transmission beam to a terminal device, including the configuration, activation, and indication of TCI-state.

[0326] TCI-state configuration: Network devices configure multiple TCI-states to terminal devices via RRC signaling. Each of these TCI-states includes a QCL-Info of type type D. Network devices can also configure TCI-states that do not include a QCL-Info of type type D; however, these TCI-states are not used for data transmission beam indication and will not be discussed further here.

[0327] TCI-state activation: After configuring multiple TCI-states on a network device, eight of them need to be activated via MAC-CE. These eight TCI-states correspond one-to-one with the eight values ​​of the TCI field in the DCI. That is, which eight TCI-states correspond to the eight values ​​of the TCI field in the DCI is determined by MAC CE.

[0328] Figure 3 A schematic diagram of a MAC CE for activating the TCI state, applicable to embodiments of this application. (See diagram below.) Figure 3 As shown, fields T0 to T(R-2)*8+7 correspond to the TCI-states configured in the first step, with indices from 0 to (R-2)*8+7 respectively. Each field is 1 bit in size and can have a value of 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 8 activated fields with a value of 1, and the rest are all 0. The TCI-states corresponding to these 8 fields with a value of 1 are the 8 TCI-states corresponding to the 8 values ​​of the TCI field in the DCI. For example, the minimum value of the TCI field (000) corresponds to the TCI-state with the smallest activated index in the MAC CE, and so on, one-to-one. There are many types of MAC CEs. In addition to MAC CEs used for TCI-state activation, there are many other MAC CEs for various purposes. This application only relates to MAC CEs used for TCI-state or TCI-state combination activation. Therefore, unless otherwise specified, the MAC CEs mentioned in this application refer to this type of MAC CE.

[0329] TCI-state indication: Network devices indicate a specific TCI-state through the TCI field in the DCI. For example, if the TCI field value in the DCI sent by the network device to the terminal device is 000, it indicates that the data transmission beam uses the TCI-state corresponding to 000. The reference signal contained in the type D QCL-Info within this TCI-state is CSI-RS with index #1, indicating that the beam used for data transmission is the same as the receiving beam corresponding to CSI-RS with index #1. The receiving beam corresponding to CSI-RS with index #1 can be determined through beam measurement procedures and is known to the terminal device. Therefore, through the specific value of the TCI field, the terminal device can determine the receiving beam corresponding to the data transmission beam and thus use the corresponding receiving beam to receive data. It should be noted that the two description methods of TCI-state and TCI status in this article can be used interchangeably.

[0330] 3. Spatial relation (used to indicate the uplink beam)

[0331] In current communication protocols, the uplink transmission beam is indicated by a spatial relation, which functions similarly to TCI-state, informing the terminal device which transmission beam to use for uplink transmission.

[0332] Spatial relations also need to be configured via RRC first. The configuration structure is shown below:

[0333]

[0334] This includes spatial relation identifiers, cell identifiers, target reference signal resources, path loss measurement reference signals, and power control parameters. The target reference signal resource (which can be any of the following: SRS, synchronization signal block, physical broadcast channel block (SSB), and CSI-RS) indicates the corresponding uplink beam. If the uplink transmission uses spatial relation #1, and this spatial relation #1 includes a target reference signal resource #2, it indicates that the transmit beam used for this uplink transmission is the transmit or receive beam of the target reference signal. For example, if the target reference signal resource is an uplink resource SRS, it means that the transmit beam used for the uplink transmission is the transmit beam of that SRS (the transmit beam of the SRS is known). Similarly, if the target reference signal resource is a downlink resource such as an SSB or CSI-RS, it means that the transmit beam used for the uplink transmission is the receive beam of that SSB or the receive beam of the CSI-RS (the receive beam of that SSB or the receive beam of the CSI-RS is known).

[0335] Network devices can configure multiple spatial relations for terminal devices. Then, one of these is activated via MAC CE for the corresponding data transmission. Uplink transmissions, including PUCCH, SRS, and PUSCH, all require corresponding spatial relations. The spatial relation for PUCCH is indicated by MAC CE signaling. The spatial relation for SRS is also indicated by MAC CE signaling. During PUSCH transmission, a specific SRS is associated, and the spatial relation of that SRS is used for transmission.

[0336] 4. Antenna panel

[0337] A panel refers to an antenna panel, which can be the antenna panel of a network device or the antenna panel of a terminal device. An antenna panel typically has one or more antennas arranged in an antenna array to perform beamforming, thereby forming a simulated beam. This antenna array can generate simulated beams pointing in different directions. In other words, each antenna panel can form multiple simulated beams, and beam measurement can be used to determine which simulated beam is optimal for that antenna panel. Terminal devices can be equipped with multiple antenna panels, which can be distributed in different locations and facing different directions. This ensures that regardless of the terminal device's orientation, at least one antenna panel is facing the network device, enabling data transmission. The terminal device can simultaneously activate all antenna panels for transmission. Alternatively, to reduce power consumption, the terminal device can use only a single antenna panel for transmission at a time, turning off the other unused antenna panels. The terminal device typically needs to notify the network device of the antenna panel's on / off status; that is, the terminal device and network device generally need to exchange antenna panel status information.

[0338] In the embodiments of this application, unless otherwise specified, the antenna panel refers to the antenna panel of the terminal device. The antenna panel can also be represented by an antenna panel index, etc. In addition, antenna panels can be implicitly represented in other ways. For example, antenna panels can be represented by antenna ports (such as CSI-RS ports, SRS ports, demodulation reference signal (DMRS) ports, phase tracking reference signal (PTRS) ports, CRS ports, time-frequency tracking reference signal (TRS) ports, SSB ports, etc.) or groups of antenna ports. They can also be represented by resources (such as CSI-RS resources, SRS resources, DMRS resources, PTRS resources, cell reference signal (CRS) resources, TRS resources, SSB resources, etc.) or groups of resources. They can also be represented by a channel (such as PUCCH, PUSCH, physical random access channel (PRACH), PDSCH, PDCCH, physical broadcast channel (PBCH), etc.). Alternatively, they can be represented by beams, QCL, TCI-state, spatial relation, or an index configured in QCL, TCI-state, spatial relation. It can also be characterized by beam groups, QCL groups, TCI-state groups, spatial relation groups, etc. In other words, the antenna panel / panel identifier described in this application can be replaced with the identifiers mentioned above.

[0339] 5. Common beam.

[0340] Currently, each channel uses a separate beam indicator. For example, the beams of PDCCH and PDSCH are indicated by TCI-state, while the beams of PUCCH and PUSCH are indicated by spatial relation. Each channel has its own corresponding beam. In this application, a common beam is defined for use with multiple uplink and / or downlink channels simultaneously.

[0341] Common beam: The same beam used by multiple channels, multiple reference signals, and / or multiple reference signals. Multiple channels include, but are not limited to, at least one of the following: PDCCH, PDSCH, PUCCH, PUSCH, PRACH. Reference signals include, but are not limited to, at least one of the following: SSB, CSI-RS, DMRS, PTRS, TRS, SRS, etc.

[0342] For example, common beams can be specifically divided into the following three types.

[0343] Joint common beam: Used simultaneously for the transmission of at least one channel or at least one reference signal in both uplink and downlink. Examples include PDCCH, PDSCH, PUCCH, and PUSCH. A joint common beam can also be called an uplink / downlink common beam.

[0344] Uplink common beam: Used simultaneously for transmission on multiple uplink channels, and / or for transmission on various uplink channels, and / or for transmission on one or more uplink reference signals. Examples include PUCCH, PUSCH, and SRS.

[0345] Downlink common beam: Used simultaneously for transmission on multiple downlink channels, and / or for transmission on various downlink channels, and / or for transmission on one or more downlink reference signals. Examples include PDCCH, PDSCH, and CSI-RS.

[0346] Unless otherwise specified, the common beams mentioned later may refer to any one of them.

[0347] In this application, the network device can indicate at least two common beams of the same type to the terminal device. For example, the first beam and the second beam mentioned below 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. Specifically, the type of the first beam and the second beam should be understood in conjunction with the specific embodiments.

[0348] Common beam form: A common beam can be a newly defined structure (different from the existing TCI-state and spatial relation structures). For example, a common beam includes beam indication information, including but not limited to one or more of the following: common beam identifier (ID), logical cell ID, physical cell ID, bandwidth portion ID, reference signal resource for beam determination, QCL type, uplink power control related parameters (such as path loss measurement reference signal resource, p0, closed loop index, etc.).

[0349] Application scope of common beams: Common beams can be cell-level, meaning one common beam is used for transmission of multiple channels within a single cell. Common beams can be BWP-level, used for transmission of multiple beams within a single BWP. Common beams can also be cross-cell, used for transmission of multiple channels across multiple cells. These multiple cells can be multiple cells within a single frequency band. These multiple cells can also be multiple cells across frequency bands. The common beam can also be at the control-resource set (CORESET) level, meaning that all PDCCHs corresponding to the CORESET, and / or all PDSCHs scheduled by the PDCCHs of the CORESET, and / or all PUSCHs scheduled by the PDCCHs of the CORESET, and / or the PUCCHs or PUSCHs for the feedback information (ACK or NACK) transmission of the PDSCHs scheduled by the PDCCHs of the CORESET all use the same common beam.

[0350] Common beams are also represented using TCI-state or spatial relation. For example, downlink common beams are represented using TCI-state, while uplink common beams are represented using spatial relation.

[0351] In other words, the common beam in this application can be represented in the protocol as a TCI-state or spatial relation, or other parameters used to indicate the uplink transmission beam, or other parameters used to indicate the downlink transmission beam.

[0352] Compared to common beams, beams defined in 3GPP R15 and 3GPP R16 protocols, such as TCI-state, spatial relation, and spatial filter, are called ordinary beams. Ordinary beams are used for transmission on a single channel, not for transmission on multiple channels or multiple reference signals simultaneously. Network devices need to specify a separate ordinary 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. Since the common beam is the same beam used by multiple channels or multiple signals, it can uniformly indicate the corresponding beam for multiple channels or multiple signals. This achieves efficient beam indication, avoids complex indication commands, and saves additional overhead.

[0353] 6. Control Resource Set: This is a set of frequency domain resources used to indicate PDCCH transmission. It is a parameter configuration unit for PDCCH transmission and includes relevant configuration parameters for PDCCH.

[0354] 7. Control Resource Set Grouping: This includes at least one control resource set. Each control resource set group corresponds to a group index (CORESETPoolIndex). The configuration parameters of a control resource set include the group index, which indicates the control resource set group it belongs to.

[0355] 8. Search Space: This indicates the set of time-domain locations for PDCCH transmissions and the corresponding time-frequency locations of multiple PDCCH resources within the search space. For example, the search space defines the PDCCH transmission period, which is the period of PDCCH opportunities within the search space. A PDCCH can actually be understood as a detection point or detection period in the time domain. For example, taking a time unit as a time slot, a PDCCH transmission period contains P time slots. Furthermore, the search space indicates the offset value of the starting time slot of the PDCCH transmission period, for example, S. Then, a PDCCH transmission period corresponds to a time window, with the starting time slot numbered S+P*n and the ending time slot numbered S+P*(n+1)-1, where n is a positive integer and P is a positive integer. Further, the search space indicates which consecutive time slots within the PDCCH transmission period have PDCCH opportunities, and which symbols within these time slots have PDCCH opportunities.

[0356] In this application, the network device indicates at least two beams of the same type to the terminal device. These at least two beams of the same type can be at least two downlink common beams, or at least two uplink common beams, or at least two uplink and downlink common beams. If the at least two beams of the same type are downlink common beams, they can be used for the transmission of PDCCH, PDSCH, and / or CSI-RS. If the at least two beams of the same type are uplink common beams, they can be used for the transmission of PUCCH, PUSCH, and / or SRS. If the at least two beams of the same type are both uplink and downlink common beams, they can be used for the transmission of PDCCH, PDSCH, CSI-RS, PUCCH, PUSCH, and / or SRS. The following embodiments use the network device indicating a first beam and a second beam to the terminal device as an example to illustrate a scheme in which the first communication device correctly applies the beams indicated by the network device to the corresponding channel transmission or reference signal transmission.

[0357] The technical solution of this application is described below with reference to specific embodiments.

[0358] Figure 4 This is a schematic diagram of one embodiment of the beam usage method according to this application. Please refer to... Figure 4 The methods of using beams include:

[0359] 401. The first communication device determines the first beam and the second beam.

[0360] The first beam and the second beam are two beams that the network device indicates to the terminal device. For example, the first beam and the second beam are two beams that the network device indicates to the terminal device via DCI.

[0361] The first and second beams are two common beams of the same type. Figure 4 In the illustrated embodiment, 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.

[0362] In some embodiments, the first beam and the second beam in this application can be beams used by the same site. Alternatively, the first beam and the second beam can be beams used by different sites. For example, as... Figure 5 As shown, in a scenario where a terminal device transmits data to multiple sites, site 1 uses the first beam to transmit data to the terminal device, and site 2 uses the second beam to transmit data to the terminal device.

[0363] The following describes some ways to distinguish between the first beam and the second beam. Optionally, the first beam and the second beam include any of the following:

[0364] 1. The first beam is the beam with the smaller index of the two beams, and the second beam is the beam with the larger index of the two beams; or, the first beam is the beam with the larger index of the two beams, and the second beam is the beam with the smaller index of the two beams.

[0365] 2. The first beam is the beam with the smaller corresponding TCI field value among the two beams, and the second beam is the beam with the larger corresponding TCI field value among the two beams; or, the first beam is the beam with the larger corresponding TCI field value among the two beams, and the second beam is the beam with the smaller corresponding TCI field value among the two beams.

[0366] Specifically, network devices indicate the beam to terminal devices through the TCI field in the DCI. For example, a network device may send two DCIs, where the DCI with the smaller TCI value indicates the first beam, and the DCI with the larger TCI value indicates the second beam. That is, the TCI value indicating the first beam is less than the TCI value indicating the second beam; or, the DCI with the larger TCI value indicates the first beam, and the DCI with the smaller TCI value indicates the second beam. That is, the TCI value indicating the first beam is greater than the TCI value indicating the second beam.

[0367] 3. The first beam is the beam that appears earlier in the configuration order of the two beams, and the second beam is the beam that appears later in the configuration order of the two beams; or, the first beam is the beam that appears later in the configuration order of the two beams, and the second beam is the beam that appears earlier in the configuration order of the two beams.

[0368] Specifically, the beam configuration order can be understood as the order in which the beam is arranged in the beam list configured by the network device for the terminal device. This beam list includes multiple beams of the same type configured by the network device for the terminal device, specifically including the first beam and the second beam. For example, beam list {beam0, beam2, beam3}. Beam0 is configured first, and beam3 is configured last.

[0369] 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.

[0370] 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 that appears earlier in the configuration order among two beam sets of the same type, and the second beam set is the beam set that appears later in the configuration order among two beam sets of the same type. Alternatively, the first beam set is the beam set that appears later in the configuration order among two beam sets of the same type, and the second beam set is the beam set that appears earlier in the configuration order among two beam sets of the same type.

[0371] 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 activated by the network device for the terminal device through MAC CE.

[0372] 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; or, the first beam group is the beam group that is activated earlier in the MAC CE among two beam groups of the same type, and the second beam group is the beam group that is activated later in the MAC CE among two beam groups of the same type. Alternatively, the first beam group is the beam group that is activated later in the MAC CE among two beam groups of the same type, and the second beam group is the beam group that is activated earlier in the MAC CE among two beam groups of the same type.

[0373] 6. The first beam is the beam indicated by the network device through the first TCI field in the DCI, and the second beam is the beam indicated by the network device through the second TCI field in the same 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 is not always present; its presence in the DCI is determined by the configuration information. For example, if two control resource set groups are configured, the second TCI field does not exist. Conversely, if a single control resource set group is configured and two common beams of the same type are used, the second TCI field exists.

[0374] Specifically, the DCI includes multiple TCI fields. The TCI fields in the DCI are interpreted sequentially. The first TCI field read can be considered the first TCI field in the DCI, and the second TCI field read can be considered the second TCI field in the DCI. The beam indicated by the first TCI field in the DCI is the first beam, and the beam indicated by the second TCI field in the DCI is the second beam.

[0375] Optionally, the first TCI field and the second TCI field of the DCI can be understood as two different subfields in the same TCI field, or the first part of the bits and the second part of the bits in the same TCI field.

[0376] 7. The first beam is the beam corresponding to the first portion of all field values ​​in the TCI field of the DCI obtained by the network device. The second beam is the beam corresponding to the second portion of all field values ​​in the TCI field of the DCI obtained by the network device. The first portion of field values ​​corresponds to one beam group, and the second portion of field values ​​corresponds to a second beam group. The first communication device determines the first beam from the first beam group using the first portion of field values, and determines the second beam from the second beam group using the second portion of field values.

[0377] Specifically, all field values ​​of a TCI field in this DCI are divided into two parts: a first part and a second part. Optionally, the first part consists of the smaller field values, and the second part consists of the larger field values. For example, the first part might consist of field values ​​0 to 3, and the second part might consist of field values ​​4 to 7. Alternatively, the first part might consist of even-numbered field values, and the second part might consist of odd-numbered field values. For example, the first part might consist of even-numbered field values, and the second part of odd-numbered field values. Or, the first part might consist of odd-numbered field values, and the second part of even-numbered field values. In other words, if a TCI field in a DCI takes the value of the first part, it indicates that the DCI points to the first beam. If a TCI field in a DCI takes the value of the second part, it indicates that the DCI points to the second beam.

[0378] 8. The first beam and the second beam are two beams of the same type indicated by the same TCI field in the DCI of the network device. The first beam is the first beam of the two beams of the same type indicated by the same TCI field, and the second beam is the second beam of the two beams of the same type indicated by the same TCI field; or, the first beam is the beam that is activated earlier in the MAC CE among the two beams of the same type, and the second beam is the beam that is activated later in the MAC CE among the two beams of the same type; or, the first beam is the beam that is activated later in the MAC CE among the two beams of the same type, and the second beam is the beam that is activated earlier in the MAC CE among the two beams of the same type.

[0379] 9. The first beam is the beam indicated by the first DCI, and the second beam is the beam indicated by the second DCI.

[0380] In one possible implementation, the first DCI is used by the network device to indicate a first beam to the terminal device, and the second DCI is used by the network device to indicate a second beam to the terminal device. The value of the first field in the first DCI is used to indicate that the beam indicated by the first DCI is the first beam, and the value of the first field in the second DCI is used to indicate that the beam indicated by the second DCI is the second beam.

[0381] The first and second DCIs can be distinguished by a field or a portion of a field within a DCI (such as the first or last bit of the TCI field). For example, if the first bit of the TCI field in a DCI is 0, then the DCI is the first DCI. If the first bit of the TCI field in a DCI is 1, then the DCI is the second DCI. Similarly, if a 1-bit field in a DCI is 0, then the DCI is the first DCI; if the 1-bit field is 1, then the DCI is the second DCI. In other words, a DCI contains a field or a portion of a field that indicates whether it points to the first or second beam. When the field or a portion of a field has a first value (e.g., 0), it indicates that the DCI points to the first beam. When the field or a portion of a field has a second value (e.g., 1), it indicates that the DCI points to the second beam. For example, if a field or some bits of a field in a DCI (Digital Cryo Interchange) take a first value (e.g., 0), the TCI field in that DCI corresponds to the first beam group. The first communication device determines the first beam from the first beam group based on the TCI field value. In other words, that DCI is the first DCI. Conversely, if a field or some bits of a field in a DCI take a second value (e.g., 1), the TCI field in that DCI corresponds to the second beam group. The first communication device determines the second beam from the second beam group based on the TCI field value. In other words, that DCI is the second DCI.

[0382] In the above implementation, the first beam group and the second beam group are two beam groups activated by a single MAC CE. Alternatively, the first beam group and the second beam group are two beam groups activated by two independent MAC CEs respectively. The MAC CE includes a field whose value is a first value, for example, 0, indicating that the beam group indicated by the MAC CE is the first beam group. The field's value is a second value, for example, 1, indicating that the beam group indicated by the MAC CE is the second beam group.

[0383] In another possible implementation, the first DCI and the second DCI can be distinguished by the control resource set packet corresponding to the PDCCH. The first DCI is the DCI carried by the PDCCH corresponding to the first control resource set packet among the two control resource set packets configured by the network device for the terminal device, and the second DCI is the DCI carried by the PDCCH corresponding to the second control resource set packet among the two control resource set packets.

[0384] Optionally, the first control resource set group is the control resource set group with the smaller grouping index among the two control resource set groups, and the second control resource set group is the control resource set group with the larger grouping index among the two control resource set groups; or, the first control resource set group is the control resource set group with the larger grouping index among the two control resource set groups, and the second control resource set group is the control resource set group with the smaller grouping index among the two control resource set groups.

[0385] In this application, for multi-site transmission scenarios, the network device may include multiple sites, that is, the network device is a collective term for these multiple sites; or, the network device may be some of the multiple sites. For example, the network device may be one of the multiple sites, but this application does not specifically limit the choice.

[0386] Optionally, if the first communication device is a terminal device, the first beam and the second beam in 401 above can be indicated by the second communication device to the first communication device. Please refer to the following text for details. Figure 9 The relevant descriptions in the illustrated embodiments are as follows.

[0387] 402. The first communication device determines the beam used by the first control resource set according to the first rule.

[0388] The first control resource set uses a first beam and / or a second beam.

[0389] Optionally, the beam used by the first communication device to determine the first control resource set according to the first rule can also be described as: the beam used by the first communication device to determine the first PDCCH set according to the first rule. The first PDCCH belongs to the PDCCH corresponding to the first control resource set. The technical solution of this application will be introduced below using the beam used by the first communication device to determine the first control resource set according to the first rule as an example.

[0390] The above 402 is described below in conjunction with some possible scenarios.

[0391] Scenario 1: If 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 aforementioned 402 specifically includes:

[0392] If the first control resource set belongs to the first control resource set group in the two control resource set groups, the first communication device determines that the beam used by the first control resource set is the first beam;

[0393] If the first control resource set belongs to the second control resource set group in the two control resource set groups, the first communication device determines that the beam used by the first control resource set is the second beam.

[0394] In other words, based on the above scenario one, the first rule specifically includes: if the first control resource set belongs to the first control resource set group in the two control resource set groups, then the beam used by the first control resource set is the first beam; if the first control resource set belongs to the second control resource set group in the two control resource set groups, then the beam used by the first control resource set is the second beam.

[0395] The following describes two possible implementation methods for grouping the first control resource set and the second control resource set:

[0396] Implementation Method 1: The first control resource set group is the control resource set group with the smaller grouping index among the two control resource set groups, and the second control resource set group is the control resource set group with the larger grouping index among the two control resource set groups.

[0397] Implementation Method 2: The first control resource group is the control resource set group with the larger grouping index among the two control resource set groups, and the second control resource set group is the control resource set group with the smaller grouping index among the two control resource set groups.

[0398] Specifically, the process of a network device configuring two control resource set groups for a terminal device includes: the network device configuring multiple control resource sets for the terminal device, where the first part of the control resource sets corresponds to group index 0, and the second part corresponds to group index 1. In other words, these multiple control resource sets are divided into two control resource set groups, each with a corresponding group index (CORESETPoon Index). That is, control resource sets with the same group index can constitute a single control resource set group. In other words, control resource sets within the same control resource set group have the same group index. In other words, the network device implicitly configures two control resource set groups for the terminal device.

[0399] For example, the grouping index CORESETPOul Index for the first control resource set group is 0, and the grouping index CORESETPOul Index for the second control resource set group is 1. The configuration parameters for each control resource set include a grouping index, which indicates the control resource set group to which the control resource set belongs.

[0400] It should be noted that if the configuration parameters of a control resource set do not include a grouping index, the default grouping index for that control resource set is 0. Therefore, this control resource set can also be considered to belong to the control resource set group with a grouping index of 0.

[0401] Optionally, for multi-site transmission scenarios, these two control resource set groups can be understood as control resource set groups used by the two sites respectively. For example, as Figure 5 As shown, 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. Through the technical solution of this application, the first communication device can determine that the control resource set in the first control resource set group of site 1 uses the first beam, and the control resource set in the second control resource set group of site 2 uses the second beam.

[0402] Scenario 2: If the network device configures two control resource sets for the terminal device, and these two control resource sets are used for repeated transmission of the control channel PDCCH. Using two control resource sets for repeated PDCCH transmission can be understood as: the PDCCH corresponding to the two control resource sets is the same PDCCH, or the content transmitted by 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 repeated PDCCH transmission through the correlation between the two control resource sets or the correlation between the search spaces corresponding to the two control resource sets. The following describes two possible implementations of the above 402 scenario.

[0403] Implementation Method 1

[0404] The aforementioned 402 specifically includes:

[0405] If the first control resource set is the control resource set with the smaller index among the two control resource sets, the first communication device determines that the beam used by the first control resource set is the first beam; if the first control resource set is the control resource set with the larger index among the two control resource sets, the first communication device determines that the beam used by the first control resource set is the second beam; or...

[0406] If the first control resource set is the control resource set with the smaller index among the two control resource sets, the first communication device determines that the beam used by the first control resource set is the first beam indicated by the network device to the terminal device; if the first control resource set is the control resource set with the larger index among the two control resource sets, the first communication device determines that the beam used by the first control resource set is the second beam indicated by the network device to the terminal device; wherein, the beam indicated by the network device to the terminal device includes the first beam and the second beam; or,

[0407] If the first control resource set is the control resource set configured earlier in the two control resource sets, the first communication device determines that the beam used by the first control resource set is the first beam; if the first control resource set is the control resource set configured later in the two control resource sets, the first communication device determines that the beam used by the first control resource set is the second beam; or...

[0408] If the first control resource set is the control resource set configured earlier in the two control resource sets, the first communication device determines that the beam used by the first control resource set is the first beam indicated by the network device to the terminal device; if the first control resource set is the control resource set configured later in the two control resource sets, the first communication device determines that the beam used by the first control resource set is the second beam indicated by the network device to the terminal device; wherein, the beam indicated by the network device to the terminal device includes the first beam and the second beam.

[0409] The configuration order of a control resource set can be understood as the order in which the control resource set is arranged in the list of control resource sets configured by the network device for the terminal device.

[0410] The two control resource sets mentioned above are used for repeated transmission of control channels, meaning that the control channels corresponding to the two control resource sets transmit the same content (e.g., the same data). Specifically, each of the two control resource sets can correspond to one or more search spaces. If there is an association between the search spaces corresponding to the two control resource sets, it indicates that the two control resource sets are used for repeated transmission of control channels.

[0411] In other words, based on implementation method 1 of scenario 2 above, the first rule specifically includes:

[0412] If the first control resource set is the control resource set with the smaller index among the two control resource sets, then the beam used by the first control resource set is the first beam; if the first control resource set is the control resource set with the larger index among the two control resource sets, then the beam used by the first control resource set is the second beam; or,

[0413] If the first control resource set is the control resource set that is configured earlier in the two control resource sets, then the beam used by the first control resource set is the first beam; if the first control resource set is the control resource set that is configured later in the two control resource sets, then the beam used by the first control resource set is the second beam.

[0414] Implementation Method 2

[0415] The aforementioned 402 specifically includes:

[0416] If the first control resource set is the control resource set with the larger index among the two control resource sets, the first communication device determines that the beam used by the first control resource set is the first beam; if the first control resource set is the control resource set with the smaller index among the two control resource sets, the first communication device determines that the beam used by the first control resource set is the second beam; or...

[0417] If the first control resource set is the control resource set with the larger index among the two control resource sets, the first communication device determines that the beam used by the first control resource set is the first beam indicated by the network device to the terminal device; if the first control resource set is the control resource set with the smaller index among the two control resource sets, the first communication device determines that the beam used by the first control resource set is the second beam indicated by the network device to the terminal device; wherein, the beam indicated by the network device to the terminal device includes the first beam and the second beam; or,

[0418] If the first control resource set is the control resource set configured later in the two control resource sets, the first communication device determines that the beam used by the first control resource set is the first beam; if the first control resource set is the control resource set configured earlier in the two control resource sets, the first communication device determines that the beam used by the second control resource set is the second beam; or...

[0419] If the first control resource set is the control resource set configured later in the two control resource sets, the first communication device determines that the beam used by the first control resource set is the first beam indicated by the network device to the terminal device; if the first control resource set is the control resource set configured earlier in the two control resource sets, the first communication device determines that the beam used by the second control resource set is the second beam indicated by the network device to the terminal device; wherein, the beam indicated by the network device to the terminal device includes the first beam and the second beam.

[0420] In other words, based on implementation method 2 of scenario 2 above, the first rule specifically includes:

[0421] If the first control resource set is the control resource set with the larger index among the two control resource sets, then the beam used by the first control resource set is the first beam; if the first control resource set is the control resource set with the smaller index among the two control resource sets, then the beam used by the first control resource set is the second beam; or,

[0422] If the first control resource set is the control resource set configured later in the two control resource sets, then the beam used by the first control resource set is the first beam; if the first control resource set is the control resource set configured earlier in the two control resource sets, then the beam used by the second control resource set is the second beam.

[0423] It should be noted that if Situations 1 and 2 are met—that is, if the network device configures two control resource set groups for the terminal device, and these two control resource sets are used for repeated transmission of the control channel—the determination methods provided in Situations 1 and 2 may conflict. For example, if the two control resource sets belong to the same control resource set group, according to the determination method provided in Situation 1, the two control resource sets should use the same beam. However, according to the determination method provided in Situation 2, the two control resource sets should use the first beam and the second beam, respectively. As another example, if the two control resource sets belong to different control resource set groups, and the control resource set with the smaller index is located in the control resource set group with the larger group index, according to Implementation Method 1 in Situation 1, the control resource set with the smaller index should use the second beam. However, according to Implementation Method 1 in Situation 2, the control resource set with the smaller index should use the first beam.

[0424] Therefore, for the second scenario, the following provision is further proposed to resolve the aforementioned conflict, so that the first communication device can determine the beam used by the first control resource set through the determination method provided in the first scenario or the second scenario. In the second scenario, the following is also included:

[0425] 1. If a network device configures two control resource set groups for a terminal device, then the two control resource sets belong to different control resource set groups.

[0426] In other words, if a network device is configured with two control resource set packets, and these two control resource sets are used for repeated transmission of the control channel, then these two control resource sets must belong to different control resource set packets, and cannot belong to the same control resource set packet.

[0427] 2. If the network device configures two control resource set groups for the terminal device, based on the implementation method 1 of scenario one and the implementation method 1 of scenario two above, then the index of the control resource set in the first control resource set group is less than the index of the control resource set in the second control resource set group; or, the configuration order of the control resource sets in the first control resource set group is before the configuration order of the control resource sets in the second control resource set group.

[0428] The first control resource set group is the control resource set group with the smaller grouping index among the two control resource set groups, and the second control resource set group is the control resource set group with the larger grouping index among the two control resource set groups.

[0429] 3. If the network device configures two control resource set groups for the terminal device, based on implementation method 1 of scenario one and implementation method 2 of scenario two above, then the index of the control resource set in the first control resource set group is greater than the index of the control resource set in the second control resource set group; or, the configuration order of the control resource set in the first control resource set group is after the configuration order of the control resource set in the second control resource set group.

[0430] The first control resource set group is the control resource set group with the smaller grouping index among the two control resource set groups, and the second control resource set group is the control resource set group with the larger grouping index among the two control resource set groups.

[0431] 4. The condition that two control resource sets are used for repeated transmission of the control channel is met: the network device only configures one control resource set packet for the terminal device.

[0432] In other words, a network device can only configure two control resource sets for repeated transmission of the control channel if it configures only one control resource set packet for the terminal device. Conversely, if a network device configures two control resource set packets for the terminal device, the network device cannot configure two control resource sets for repeated transmission of the control channel.

[0433] Optionally, for multi-site transmission scenarios, these two sets of control resources can be understood as the sets of control resources used by each of the two sites respectively. For example, such as Figure 5 As shown, site 1 uses a control resource set with a smaller index, while site 2 uses a control resource set with a larger index. Through the technical solution of this application, the first communication device can determine the beam used by the control resource sets of different sites. For example, as... Figure 5 As shown, in the technical solution of this application, the first communication device can determine that the control resource set of site 1 adopts the first beam and the control resource set of site 2 adopts the second beam.

[0434] Scenario 3: If the network device configures a control resource set group for the terminal device, and 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, then the above-mentioned 402 specifically includes any of the following:

[0435] 1. The first communication device determines that the beam used for the first control resource set is the first beam; or,

[0436] In this implementation, if scenario three is met, the first communication device can default to determining that the beam used by the first control resource set is the first beam. That is, the first communication device does not need to consider the beam currently used by the first control resource set, but directly defaults to determining that the first control resource set uses the first beam.

[0437] 2. The first communication device determines that the beam used for the first control resource set is the second beam; or,

[0438] In this implementation, if scenario three is met, the first communication device can default to determining that the beam used by the first control resource set is the second beam. That is, the first communication device does not need to consider the beam currently used by the first control resource set, but directly defaults to determining that the first control resource set uses the second beam.

[0439] 3. If the beam currently used by the first control resource set belongs to the same beam set as the first beam, the first communication device determines to update the beam currently used by the first control resource set to the first beam. If the beam currently used by the first control resource set belongs to the same beam set as the second beam, the first communication device determines to update the beam currently used by the first control resource set to the second beam.

[0440] In this implementation, if scenario three is satisfied, the first communication device determines the updated beam to be used by the first control resource set, taking into account the beam currently used by the first control resource set. If the beam currently used by the first control resource set belongs to the same beam set as the first beam (e.g., the beam set configured by the network device for the terminal device), then the beam currently used by the first control resource set is updated to the first beam. If the beam currently used by the first control resource set belongs to the same beam set as the second beam, then the beam currently used by the first control resource set is updated to the second beam.

[0441] For example, the aforementioned beam set is one of multiple beam sets composed of the same type of common beams configured by the network device for the terminal device. Different beam sets can correspond to different sites. That is, different sites use beams configured in different beam sets; in other words, beams in the same beam set are beams used by the same site. Therefore, if the beam currently used by the first control resource set belongs to the same beam set as the first beam, the PDCCH corresponding to the first control resource set will be transmitted preferentially using the same site. Therefore, the beam currently used by the first control resource set will be updated to the first beam. The same principle applies to the second beam, which will not be explained in detail here.

[0442] In other words, based on scenario three above, the first rule specifically includes:

[0443] If the beam currently used by the first control resource set belongs to the same beam set as the first beam, then the beam currently used by the first control resource set is updated to the first beam; if the beam currently used by the first control resource set belongs to the same beam set as the second beam, then the beam currently used by the first control resource set is updated to the second beam.

[0444] Optionally, the method shown in scenario three above can be used if the first set of control resources is not used for repeated transmission of the control channel. That is, the first set of control resources is not combined with other sets of control resources for repeated transmission of the control channel.

[0445] Scenario 4: If the network device configures a control resource set group for the terminal device, and this 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, then 402 specifically includes: the first communication device determining that the first control resource set uses a first beam and a second beam. That is, the first control resource set uses both the first beam and the second beam for transmission.

[0446] In other words, based on the above scenario four, the first rule specifically includes: the first control resource set uses a first beam and a second beam.

[0447] Scenario 5: The first communication device receives a first MAC CE from the second communication device; the first MAC CE includes an index of a first control resource set; 402 specifically includes:

[0448] If the first MAC CE is a first type of MAC CE, and the first MAC CE includes first beam indication information indicating a first beam, then the first communication device determines that at any time within a first time period, the first control resource set adopts the first common beam of two common beams of the same type that are active at that time. The first time period is the time interval between the effective time of the beam indicated by the first MAC CE and the effective time of the beam indicated by the second MAC CE. The second MAC CE is the most recently received MAC CE after the first communication device receives the first MAC CE, used to indicate the beam adopted by the first control resource set. Alternatively,

[0449] If the first MAC CE is a first type of MAC CE, and the first MAC CE includes first beam indication information indicating a second beam, then the first communication device determines that at any time within a first time period, the first control resource set uses the second common beam of two common beams of the same type that are active at that time. Alternatively,

[0450] If the first MAC CE is a second type of MAC CE, and the first MAC CE includes second beam indication information and third beam indication information, the second beam indication information indicates the first beam, and the third beam indication information indicates the second beam, the first communication device determines that at any time within the first time period, the first control resource set adopts two common beams of the same type that are effective at any time.

[0451] In scenario five, if the first MAC CE is a first type of MAC CE, and the first MAC CE also includes first beam indication information, which indicates a single beam. If the first communication device receives a first MAC CE of the first type from the second communication device, and the first MAC CE includes an index of a first control resource set, then the first communication device determines that the first control resource set is a single-beam control resource set, i.e., that the first control resource set uses a single beam. As for which specific beam is used, i.e., whether the first beam or the second beam is used, the second communication device can indicate this through the first beam indication information. It can be stipulated that the beam indicated by the first beam indication information must 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) correspond to TCI state 1 and TCI state 2 respectively, then 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 control resource set will subsequently use the first beam. 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 first control resource set will subsequently use the second beam.

[0452] It should be noted that when the beams corresponding to the first and second beams change, the beam used by the first control resource set also changes accordingly. For example, using the above method, the first communication device determines that the first control resource set uses the first beam. When the TCI state corresponding to the first beam changes from TCI state 1 to TCI state 3, the first control resource set will use the beam corresponding to TCI state 3, not the beam corresponding to TCI state 1. In other words, indicating a beam in the first MAC CE does not tell the terminal device to always use that beam, but rather tells the first communication device which of the two common beams to use subsequently by comparing that beam with the currently active beams (i.e., the first beam and the second beam). Specifically, if the beam indicated in the first MAC CE is the same as the first common beam of the two currently active common beams, then at any time within the subsequent first time period, the terminal device will use the first common beam of the two common beams active at that time. If the first MAC CE indicates that a beam is the same as the second common beam of the two currently active common beams, then at any time in the subsequent first time period, the terminal device uses the second common beam of the two common beams active at that time.

[0453] If the first MAC CE is a second type of MAC CE, the first MAC CE also includes second beam indication information and third beam indication information. The second beam indication information is used to indicate one beam, and the third beam indication information is used to indicate one beam. It can be stipulated that the two beams indicated by the two beam indication information included in the first MAC CE must be the same as the two beams currently used (i.e., the first beam and the second beam). The first communication device can also ignore the beam indication information in the first MAC CE because, in common beam mode, the beams of the first control resource set do not need to be indicated through the MAC CE, but are directly indicated by the common beam (i.e., the first beam and the second beam) by the second communication device. In other words, if the second communication device configures a common beam for the first communication device (i.e., it is currently in common beam mode), the first communication device can directly ignore the two beams indicated in the received first MAC CE. Alternatively, if the second communication device indicates 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 in the received first MAC CE. Optionally, the first control resource set may be specified to directly adopt the two beams indicated by the second and third beam indication information. It is not required that the two beams indicated by the second and third beam indication information be the same as the two currently active common beams.

[0454] Based on scenarios three through five above, optionally, the above... Figure 4The illustrated embodiment also includes 402a. 402a may be executed prior to 402.

[0455] 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.

[0456] In this context, a single-beam control resource set uses one beam, while a multi-beam control resource set uses more than one beam. For example, a multi-beam control resource set uses two beams.

[0457] The following describes several possible implementations of how the first communication device determines the type of the first set of control resources.

[0458] Implementation method 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.

[0459] Specifically, the network device configures a first control resource set for the terminal device. The configuration parameters of this first control resource set include information indicating its type. The first communication device can determine the type of the first control resource set using these configuration parameters. For example, these configuration parameters can be used to configure whether the first control resource set is a single-beam control resource set or a multi-beam control resource set.

[0460] Implementation Method 2: The first communication device receives first indication information from the second communication device. This first indication information indicates whether the first control resource set is allowed to use multiple beams, or indicates the type of the first control resource set. This first indication information is included in the configuration information sent by the network device to the terminal device.

[0461] In implementation method 2, the first communication device can be a terminal device, and the second communication device can be a network device.

[0462] Specifically, the network device configures a first control resource set for the terminal device. The configuration parameters of this first control resource set indicate whether it can use one or more beams for transmission, which can be determined in conjunction with the network device's indication information. The network device can use additional first indication information to indicate whether the first control resource set is allowed to use multiple beams. If the first control resource set is allowed to use multiple beams, it is considered a multi-beam control resource set. If the first control resource set is not allowed to use multiple beams, it is considered a single-beam control resource set. The terminal device can determine the type of the first control resource set using this first indication information. For example, this first indication information can be used to configure whether the first control resource set uses a single beam or multiple beams. Furthermore, when the first indication information indicates that the first control resource set uses a single beam, the network device can also indicate to the terminal device via second indication information whether the first control resource set uses a first beam or a second beam. This second indication information can be provided through RRC signaling, MAC-CE signaling, or DCI signaling. Alternatively, the first indication information can be used directly to indicate whether the first set of control resources uses the first beam, the second beam, or both the first and second beams.

[0463] Implementation method 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.

[0464] Specifically, if the number of beams currently used by 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; if the number of beams currently used by 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.

[0465] Implementation Method 4: The first communication device receives a third MAC CE from the second communication device. This third MAC CE indicates the type of the first control resource set, or indicates that the first control resource set uses one or two beams, or indicates the beams of the first control resource set. The beams used by the first control resource set include a first beam and / or a second beam. That is, the third MAC CE indicates that the first control resource set uses the first beam, or the second beam, or both.

[0466] The first communication device can be a terminal device, and the second communication device can be a network device.

[0467] Specifically, the third MAC CE may include one or more 1-bit fields, each corresponding to a control resource set, used to indicate the type of the control resource set or to indicate whether the control resource set uses one or two beams. The control resource set corresponding to the one or more 1-bit fields includes a first control resource set. The third MAC CE may also include one or more 2-bit fields, each corresponding to a control resource set, used to indicate whether the control resource set uses a first beam, a second beam, or both beams (i.e., both the first and second beams).

[0468] For example, this third MAC CE includes three 2-bit fields, corresponding to three control resource sets within a bandwidth part (BWP). Each 2-bit field corresponds to one control resource set, indicating whether that control resource set uses the first beam, the second beam, or both beams (i.e., both the first and second beams). The control resource sets corresponding to these three 2-bit fields 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 with the second largest index, and so on.

[0469] For example, the third MAC CE includes 12 2-bit fields, corresponding to 12 control resource sets within a cell. Each 2-bit field corresponds to one control resource set, indicating whether the control resource set uses the first beam, the second beam, or both beams (i.e., both the first and second beams). The control resource sets corresponding to these 12 2-bit fields 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 with the second largest index, and so on. Every four 2-bit fields are located in the same 8-bit byte (i.e., one row in the third MAC CE), meaning the 12 2-bit fields occupy a total of 3 8-bit bytes. Optionally, the number of 8-bit bytes used to carry the 2-bit fields in the third MAC CE can be adjusted according to the actual number of control resource sets configured in a cell. For example, when the number of control resource sets configured in a cell is less than 4, the third MAC CE for that cell only includes 1 8-bit byte used to carry the 2-bit fields. When the number of control resource sets configured in a cell is greater than 4 but less than 8, the third MAC CE of that cell includes 2 8-bit bytes for carrying the aforementioned 2-bit field. When the number of control resource sets configured in a cell is greater than 8 but not more than 12, the third MAC CE of that cell includes only 3 8-bit bytes for carrying the aforementioned 2-bit field. When the number of control resource sets configured in a cell exceeds 12, the third MAC CE of that cell includes more than 3 8-bit bytes for carrying the aforementioned 2-bit field; the specific number of bytes is equal to the number of control resource sets divided by 4 and then rounded up. For example, if a cell is configured with 14 control resource sets, the number of 8-bit bytes in the third MAC CE of that cell for carrying the aforementioned 2-bit field is equal to 14 / 4 rounded up, which is 4.

[0470] Implementation method 5: The first communication device receives the first MAC CE from the second communication device; the first communication device determines the type of the first control resource set according to the type of the first MAC CE.

[0471] The first MAC CE is either 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.

[0472] Specifically, the first communication device can determine the type of the first control resource set by receiving the first MAC CE. For example, if the first communication device receives a first MAC CE from the second communication device that is a first type of MAC CE, and the first MAC CE includes an index of the first control resource set, then the first communication device determines that the first control resource set is a single-beam control resource set, that is, it determines that the first control resource set uses a single beam, such as the first beam. If the first communication device receives a first MAC CE from the second communication device that is a second type of MAC CE, and the first MAC CE includes an index of the first control resource set, then the first communication device determines that the first control resource set is a multi-beam control resource set, that is, it determines that the first control resource set uses two beams, for example, the first control resource set uses the first beam and the second beam.

[0473] Using the above method, the network device can indicate or switch the type of the first control resource set, or in other words, indicate or switch the number of beams used by the first control resource set, by sending the first MAC CE to the terminal device.

[0474] Optional, Figure 4 The illustrated embodiment also includes 403, which can be executed after 402.

[0475] 403. The first communication device transmits the PDCCH corresponding to the first control resource set through the beam adopted by the first control resource set.

[0476] Specifically, after the first communication device determines the beam used by the first control resource set, it can transmit the PDCCH corresponding to the first control resource set through that beam.

[0477] For example, such as Figure 5 As shown, the first control resource set uses the first beam, and the terminal device can transmit the PDCCH corresponding to the first control resource set with station 1 through the first beam.

[0478] For example, such as Figure 5 As shown, the first control resource set uses the second beam, and the terminal device can transmit the PDCCH corresponding to the first control resource set with station 2 through the second beam.

[0479] For example, such as Figure 5As shown, the first control resource set uses a first beam and a second beam. The terminal device can transmit the PDCCH corresponding to the first control resource set with station 1 through the first beam, and the terminal device can transmit the PDCCH corresponding to the first control resource set with station 2 through the second beam. That is, the PDCCH corresponding to the first control resource set is repeatedly transmitted.

[0480] It should be noted that the above Figure 4 The illustrated embodiment uses the beam used by the first communication device to determine the first control resource set as an example to introduce the technical solution of this application. The process for determining the beam used for other control resource sets is similar. For example, as... Figure 5 As shown, in a multi-site transmission scenario, the terminal device determines the beam used by the first control resource set as the first beam and the beam used by the second control resource set as the second beam. The terminal device can transmit the PDCCH corresponding to the first control resource set with station 1 through the first beam, and transmit the PDCCH corresponding to the second control resource set with station 2 through the second beam. This achieves multi-site transmission. In other words, through 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 PDCCH, thereby achieving multi-site transmission.

[0481] In this embodiment, the first communication device determines a first beam and a second beam, which are beams of the same type. 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 by the first control resource set according to a first rule, whereby the beam used by the first control resource set is the first beam and / or the second beam. Therefore, through the technical solution of this application, the first communication device can determine the beam used by the first control resource set from the first beam and the second beam based on the first rule. This allows the first communication device to correctly apply the beam indicated by the network device to the PDCCH corresponding to the control resource set, ensuring that the PDCCH corresponding to the control resource set uses the correct beam for transmission, thereby improving communication transmission performance.

[0482] It should be noted that the above Figure 4 The illustrated embodiment uses the example of a network device indicating two beams of the same type to a terminal device to illustrate the technical solution of this application. When a network device indicates one beam to a terminal device, for a multi-beam control resource set, the first communication device can determine that the multi-beam control resource set does not use that beam; or, the first communication device can determine that the beam is the first beam used in the multi-beam control resource set; or, the first communication device can determine that the beam is the second beam used in the multi-beam control resource set.

[0483] It should be noted that the above Figure 4 In the illustrated embodiment, the network device indicates two beams of the same type to the terminal device, namely a first beam and a second beam. The communication protocol may specify that the first and second beams should not be applied to a particular set of control resources. For example, the first and second beams should not be present in a single-beam control resource set. In other words, for a single-beam control resource set, the network device may additionally indicate the corresponding beam to the terminal device.

[0484] Figure 6 This is a schematic diagram of another embodiment of the beam usage method of this application. Please refer to... Figure 6 The methods of using beams include:

[0485] 601. The first communication device determines the first beam and the second beam.

[0486] The first beam and the second beam are two beams that the network device indicates to the terminal device. For example, the first beam and the second beam are two beams that the network device indicates to the terminal device via DCI.

[0487] The first and second beams are two common beams of the same type. Figure 6 In the illustrated 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.

[0488] The first communication equipment includes terminal equipment or network equipment.

[0489] In some implementations, the first beam and the second beam may be beams used by the same site; or, the first beam and the second beam may be beams used by different sites.

[0490] For information on how to distinguish between the first and second beams, please refer to the aforementioned [reference]. Figure 4 The relevant descriptions of the embodiments shown will not be repeated here.

[0491] In this application, for multi-site transmission scenarios, the network device may include multiple sites, that is, the network device is a collective term for these multiple sites; or, the network device may be some of the multiple sites. For example, the network device may be one of the multiple sites, but this application does not specifically limit the choice.

[0492] Optionally, if the first communication device is a terminal device, the first beam and the second beam in 601 above can be indicated by the second communication device to the first communication device. Please refer to the following text for details. Figure 9 The relevant descriptions in the illustrated embodiments are as follows.

[0493] 602. The first communication device determines the beam used by the first PUCCH according to the first rule.

[0494] The first PUCCH uses the first beam and / or the second beam.

[0495] The above 602 is described below in conjunction with some possible scenarios.

[0496] Scenario A: If the first PUCCH is a single-beam PUCCH, then 602 above specifically includes any of the following:

[0497] 1. The first communication device determines that the beam used by the first PUCCH is the first beam; or,

[0498] In this implementation, if condition A is met, the first communication device can default to determining that the first PUCCH uses the first beam. That is, the first communication device does not need to consider the beam currently used by the first PUCCH, but directly defaults to determining that the first PUCCH uses the first beam.

[0499] 2. The first communication device determines that the beam used by the first PUCCH is the second beam; or,

[0500] In this implementation, if condition A is met, the first communication device can default to determining that the first PUCCH uses the second beam. That is, the first communication device does not need to consider the current beam used by the first PUCCH, but directly defaults to determining that the first PUCCH uses the second beam.

[0501] 3. If the beam currently used by the first PUCCH belongs to the same beam set as the first beam, the first communication device determines to update the beam currently used by the first PUCCH to the first beam; if the beam currently used by the first PUCCH belongs to the same beam set as the second beam, the first communication device determines to update the beam currently used by the first PUCCH to the second beam.

[0502] In this implementation, if condition A is met, the first communication device determines the beam used by the first PUCCH after the update, taking into account the beam currently used by the first PUCCH. If the beam currently used by the first PUCCH belongs to the same beam set as the first beam, then the beam currently used by the first PUCCH is updated to the first beam. If the beam currently used by the first PUCCH belongs to the same beam set as the second beam, then the beam currently used by the first PUCCH is updated to the second beam.

[0503] In other words, based on scenario A, the first rule mentioned above specifically includes:

[0504] The first PUCCH uses the first beam; or,

[0505] The first PUCCH uses the second beam; or,

[0506] If the beam currently used by the first PUCCH belongs to the same beam set as the first beam, then the beam currently used by the first PUCCH is updated to the first beam; if the beam currently used by the first PUCCH belongs to the same beam set as the second beam, then the beam currently used by the first PUCCH is updated to the second beam.

[0507] Scenario B: If the first PUCCH is a multi-beam PUCCH, 602 specifically includes: the first communication device determining that the first PUCCH uses the first beam and the second beam. That is, the first communication device can determine that the multi-beam PUCCH is transmitted using the first beam and the second beam.

[0508] In other words, based on scenario B, the first rule mentioned above specifically includes: the first PUCCH uses the first beam and the second beam.

[0509] Scenario C: If the network device configures two control resource set groups for the terminal device, the aforementioned 602 specifically includes:

[0510] If the first PUCCH is associated with a first control resource set packet (CRS) or with a packet index of the first CRS, the first communication device determines that the first PUCCH uses the first beam. If the first PUCCH is associated with a second CRS or with a packet index of the second CRS, the first communication device determines that the first PUCCH uses the second beam. For example, associating the first PUCCH with the packet index of the first CRS includes: the configuration parameters of the first PUCCH include the packet index of the first CRS.

[0511] The first control resource set group is the control resource set group with the smaller grouping index among the two control resource set group groups, and the second control resource set group is the control resource set group with the larger grouping index among the two control resource set group groups. Alternatively, the first control resource set group is the control resource set group with the larger grouping index among the two control resource set group groups, and the second control resource set group is the control resource set group with the smaller grouping index among the two control resource set group groups;

[0512] For the configuration process of configuring two control resource set groups for terminal devices by network devices, please refer to the aforementioned document. Figure 4 The details of 402 in the illustrated embodiment will not be repeated here.

[0513] In other words, based on scenario C, the first rule mentioned above specifically includes:

[0514] If the first PUCCH is associated with the first control resource set group in the two control resource set groups or with the group index of the first control resource set group, then the first PUCCH uses the first beam; if the first PUCCH is associated with the group index of the second control resource set group in the two control resource set groups, then the first PUCCH uses the second beam.

[0515] Optionally, in a multi-site transmission scenario, these two control resource set groups can be understood as control resource set groups used by the two sites respectively. For example, as Figure 5 As shown, station 1 corresponds to the first control resource set packet, and station 2 corresponds to the second control resource set packet. Station 1 uses the first beam, and station 2 uses the second beam. If the first PUCCH is associated with the packet index of the first control resource set packet, it can be understood that the first PUCCH is the PUCCH between station 1 and the terminal device. Therefore, through the technical solution of this application, the first communication device can determine that the first PUCCH uses the first beam. If the first PUCCH is associated with the packet index of the second control resource set packet, it can be understood that the first PUCCH is the PUCCH between station 2 and the terminal device. Therefore, through the technical solution of this application, the first communication device can determine that the first PUCCH uses the second beam.

[0516] Scenario D: The first communication device receives a fourth MAC CE from the second communication device; the fourth MAC CE includes the index of the first PUCCH; step 602 specifically includes:

[0517] If the fourth MAC CE is a first type of MAC CE, and the fourth MAC CE includes fourth beam indication information used to indicate the first beam, then the first communication device determines that at any time within a second time period, the first PUCCH uses the first common beam of two common beams of the same type that are active at that time. The second time period is the time interval between the effective time of the beam indicated by the fourth MAC CE and the effective time of the beam indicated by the fifth MAC CE. The fifth MAC CE is the most recently received MAC CE after the first communication device receives the fourth MAC CE, used to indicate the beam used by the first PUCCH. Alternatively,

[0518] If the fourth MAC CE is a first type of MAC CE, and the fourth MAC CE includes fourth beam indication information indicating a second beam, then the first communication device determines that at any time within the second time period, the first PUCCH uses the second common beam of the two common beams of the same type that are active at that time. Alternatively,

[0519] If the fourth MAC CE is a second type of MAC CE, and the fourth MAC CE includes a fifth beam indication information and a sixth beam indication information, the fifth beam indication information is used to indicate the first beam, and the sixth beam indication information is used to indicate the second beam, then the first communication device determines that at any time within the second time period, the first PUCCH adopts two common beams of the same type that are effective at that time.

[0520] Specifically, the fourth MAC CE is a first-type MAC CE, and it also includes fourth beam indication information, which is used to indicate a beam. If the first communication device receives a first-type MAC CE from the second communication device, and this fourth MAC CE includes an index of the first PUCCH, then the first communication device determines that the first PUCCH is a single-beam PUCCH, that is, it determines that the first PUCCH uses a single beam. As for which specific beam is used, i.e., whether the first beam or the second beam is used, the second communication device can indicate this through the fourth beam indication information. It can be stipulated that the beam indicated by the fourth beam indication information must 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) correspond to TCI state 1 and TCI state 2 respectively, then the TCI state corresponding to the beam indicated by the fourth beam indication information is either TCI state 1 or TCI state 2. If the beam indicated by the fourth beam indication information is the same as the currently used first beam, then the first communication device determines that the first PUCCH will subsequently use the first beam. If the beam indicated by the fourth beam indication information is the same as the currently used second beam, then the first communication device determines that the first PUCCH will subsequently use the second beam.

[0521] It should be noted that when the beams corresponding to the first and second beams change, the beam used by the first PUCCH also changes accordingly. For example, using the method described above, the first communication device determines that the first PUCCH uses the first beam. When the TCI state corresponding to the first beam changes from TCI state 1 to TCI state 3, the first PUCCH will use the beam corresponding to state 3, not the beam corresponding to TCI state 1. In other words, indicating a beam in the fourth MAC CE does not tell the first communication device to always use that beam, but rather tells the first communication device which of the two common beams to use subsequently by comparing that beam with the currently active beam. Specifically, if the beam indicated in the fourth MAC CE is the same as the first common beam of the two currently active common beams, then at any time during the subsequent second time period, the terminal device will use the first common beam of the two common beams active at that time. If the fourth MAC CE indicates that a beam is the same as the second common beam of the two currently active common beams, then at any time during the subsequent second time period, the terminal device uses the second common beam of the two common beams active at that time.

[0522] If the fourth MAC CE is a second type of MAC CE, it also includes fifth and sixth beam indication information. The fifth beam indication information indicates one beam, and the sixth beam indication information indicates another beam. It can be stipulated that the two beams indicated by the two beam indication information included in the fourth MAC CE must be the same as the two beams currently used (i.e., the first and second beams). The first communication device can also ignore the beam indication information in the fourth MAC CE because in common beam mode, the PUCCH beam does not need to be indicated through the MAC CE, but directly uses the common beam indicated by the network device (i.e., the first and second beams). In other words, if the second communication device configures a common beam for the first communication device (i.e., it is currently in common beam mode), the terminal device can directly ignore the two beams indicated in the received fourth MAC CE. Alternatively, if the second communication device indicates two common beams (i.e., the first and second beams) for the first communication device, the first communication device can directly ignore the two beams indicated in the received fourth MAC CE. Optionally, the first PUCCH may be specified to directly use the two beams indicated by the fifth and sixth beam indication information. It is not required that the two beams indicated by the fifth and sixth beam indication information be the same as the two currently active common beams.

[0523] Based on scenario A, scenario B, or scenario D above, optionally, the above... Figure 6 The illustrated embodiment also includes 602a. 602a may be executed prior to 602.

[0524] 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.

[0525] The single-beam PUCCH uses one beam, while the multi-beam PUCCH uses more than one beam. For example, the multi-beam PUCCH uses two beams.

[0526] The following describes several possible implementations of how the first communication device determines the type of the first PUCCH.

[0527] Implementation method 1: The first communication device determines the type of the first PUCCH according to the configuration parameters in the first PUCCH.

[0528] Specifically, the network device configures a first PUCCH for the terminal device. The configuration parameters of this first PUCCH include information indicating the type of the first PUCCH. The first communication device can determine the type of the first PUCCH through these configuration parameters. For example, these configuration parameters can be used to configure whether the first PUCCH is a single-beam PUCCH or a multi-beam PUCCH.

[0529] Implementation Method 2: The first communication device receives first indication information from the second communication device. This first indication information is used to indicate whether the first PUCCH is allowed to use multiple beams, or to indicate the type of the first PUCCH.

[0530] For example, the first communication device is a terminal device, and the second communication device is a terminal device. The aforementioned first indication information may be included in the configuration information sent by the network device to the terminal device.

[0531] In implementation method 2, the first communication device can be a terminal device, and the second communication device can be a network device.

[0532] Specifically, the network device configures a first PUCCH for the terminal device. The configuration parameters of this first PUCCH indicate whether it can use one or more beams for transmission, which can be determined in conjunction with the network device's indication information. The network device can use the first indication information to indicate whether the first PUCCH is allowed to use multiple beams. If the first PUCCH is allowed to use multiple beams, it is considered a multi-beam PUCCH. If the first PUCCH is not allowed to use multiple beams, it is considered 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 can be used to configure whether the first PUCCH uses a single beam or multiple beams. Furthermore, when the first indication information indicates that the PUCCH uses a single beam, the network device can also use a second indication information to indicate to the terminal device whether to use the first beam or the second beam. The second indication information can be provided through RRC signaling, MAC-CE signaling, or DCI signaling. Alternatively, the first indication information can be used to indicate whether the first PUCCH uses a first beam, a second beam, or both beams (i.e., a first beam and a second beam).

[0533] Implementation method 3: The first communication device determines the type of the first PUCCH based on the number of beams currently used by the first PUCCH.

[0534] Specifically, if the number of beams currently used by the first PUCCH is 1, the first communication device can determine that the type of the first PUCCH is a single-beam PUCCH; if the number of beams currently used by 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.

[0535] Implementation Method 4: The first communication device receives a sixth MAC CE from the second communication device. The sixth MAC CE is used to indicate the type of one or more PUCCHs, or to indicate whether one or more PUCCHs use one or two beams, or to indicate whether one or more PUCCHs use a first beam, a second beam, or both beams (i.e., a first beam and a second beam). The one or more PUCCHs include the first PUCCH.

[0536] Specifically, the sixth MAC CE may include one or more 1-bit fields, each corresponding to a PUCCH, used to indicate the type of the PUCCH or to indicate whether the PUCCH uses one or two beams. The sixth MAC CE may also include one or more 2-bit fields, each corresponding to a PUCCH, used to indicate whether the PUCCH uses a first beam, a second beam, or both beams (i.e., a first beam and a second beam).

[0537] For example, the sixth MAC CE includes three 2-bit fields corresponding to three PUCCHs within a bandwidth part (BWP). Each 2-bit field corresponds to one PUCCH and indicates whether the PUCCH uses the first beam, the second beam, or both beams (i.e., the first beam and the second beam). 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 smallest index, and so on.

[0538] For example, the sixth MAC CE includes 12 2-bit fields, corresponding to the 12 PUCCHs in a cell. Each 2-bit field corresponds to one PUCCH, indicating whether the PUCCH uses the first beam, the second beam, or both beams (i.e., the first beam and the second beam). 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 smallest index, and so on. Every four 2-bit fields are located within the same 8-bit byte, meaning the 12 2-bit fields occupy a total of 3 8-bit bytes. Optionally, the number of 8-bit bytes used to carry the 2-bit fields in the sixth MAC CE can be adjusted based on the actual number of PUCCHs configured in a cell. For example, when the number of PUCCHs configured in a cell is less than 4, the sixth MAC CE for that cell includes only 1 8-bit byte used to carry the 2-bit fields. When a cell has more than 4 but less than 8 PUCCHs, the sixth MAC CE for that cell includes 2 8-bit bytes for carrying the aforementioned 2-bit field. When a cell has more than 8 but no more than 12 PUCCHs, the sixth MAC CE for that cell includes only 3 8-bit bytes for carrying the aforementioned 2-bit field. When a cell has more than 12 PUCCHs, the sixth MAC CE for that cell includes more than 3 8-bit bytes for carrying the aforementioned 2-bit field; the specific number of bytes is equal to the number of PUCCHs divided by 4 and then rounded up. For example, if a cell has 14 PUCCHs, the number of 8-bit bytes for carrying the aforementioned 2-bit field in the sixth MAC CE for that cell is equal to 14 / 4 rounded up, which is 4.

[0539] Implementation method 5: The first communication device receives the fourth MAC CE from the second communication device; the first communication device determines the type of the first PUCCH based on the type of the fourth MAC CE.

[0540] The fourth MAC CE is either a first-type MAC CE or a second-type MAC CE. The fourth MAC CE includes the index of the first PUCCH.

[0541] Specifically, the first communication device can determine the type of the first PUCCH by the type of the received fourth MAC CE. For example, if the first communication device receives a fourth MAC CE of type 1 from the second communication device, and this fourth MAC CE includes an index of the first PUCCH, then the first communication device determines that the first PUCCH is a single-beam PUCCH, that is, it determines that the first PUCCH uses a single beam, such as the first beam. If the first communication device receives a fourth MAC CE of type 2 from the second communication device, and this fourth MAC CE includes an index of the first PUCCH, then the first communication device determines that the first PUCCH is a multi-beam PUCCH, that is, it determines that the first PUCCH uses two beams. For example, the first PUCCH uses the first beam and the second beam.

[0542] Using the above method, the network device can indicate or switch the type of the first PUCCH, or in other words, indicate or switch the number of beams used by the first PUCCH, by sending a fourth MAC CE to the terminal device.

[0543] Optional, Figure 6 The illustrated embodiment also includes 603, which can be executed after 602.

[0544] 603. The first communication device transmits the first PUCCH through the beam used by the first PUCCH.

[0545] Specifically, after the first communication device determines the beam used by the first PUCCH, it can transmit the first PUCCH through that beam.

[0546] For example, such as Figure 5 As shown, the first PUCCH uses the first beam, and the terminal device can transmit the first PUCCH with station 1 through the first beam.

[0547] For example, such as Figure 5 As shown, the first PUCCH uses the second beam, and the terminal device can transmit the first PUCCH with station 2 through the second beam.

[0548] It should be noted that the above Figure 6 The illustrated embodiment uses the determination of the beam used by the first communication device for the first PUCCH as an example to introduce the technical solution of this application. The process for determining the beam used by other PUCCHs is similar. For example, as... Figure 5As shown, in a multi-site transmission scenario, the terminal device determines the beam used by the first PUCCH as the first beam and the beam used by the second PUCCH as the second beam. The terminal device can transmit the first PUCCH with site 1 through the first beam and transmit the second PUCCH with site 2 through the second beam. This achieves multi-site transmission. In other words, through 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 PUCCHs, thereby achieving multi-site transmission.

[0549] In this embodiment, the first communication device determines a first beam and a second beam, both of the same type. The first and second beams are two beams indicated by the network device to the terminal device. The first communication device determines the beam used by the first PUCCH according to a first rule, whereby the first PUCCH uses the first beam and / or the second beam. Therefore, through the technical solution of this application, the first communication device can determine the beam used by the first PUCCH from the first and second beams based on the first rule. This allows the first communication device to correctly apply the beam indicated by the network device to the first PUCCH, ensuring that the first PUCCH uses the correct beam for transmission, thereby improving communication transmission performance.

[0550] Figure 7 This is a schematic diagram of another embodiment of the beam usage method of this application. Please refer to... Figure 7 The methods of using beams include:

[0551] 701. The first communication device determines the first beam and the second beam.

[0552] The first beam and the second beam are two beams that the network device indicates to the terminal device. For example, the first beam and the second beam are two beams that the network device indicates to the terminal device via DCI. The first beam and the second beam are two common beams of the same type.

[0553] In some implementations, the first beam and the second beam can be beams used by the same site. Alternatively, the first beam and the second beam can be beams used by different sites. For example, as... Figure 5 As shown, in a scenario where a terminal device transmits data to multiple sites, site 1 uses the first beam to transmit data to the terminal device, and site 2 uses the second beam to transmit data to the terminal device.

[0554] For some possible ways to distinguish between the first and second beams, please refer to the aforementioned [reference needed]. Figure 4 The relevant description of 401 in the illustrated embodiment will not be repeated here.

[0555] Optionally, if the first communication device is a terminal device, the first beam and the second beam in 701 above can be indicated by the second communication device to the first communication device. Please refer to the following text for details. Figure 9 The relevant descriptions in the illustrated embodiments are as follows.

[0556] 702. The second communication device sends a third instruction message to the first communication device.

[0557] The third indication information is used to indicate any of the following: the first shared channel uses a first beam; or, the first shared channel uses a second beam; or, the first shared channel uses both a first beam and a second beam; or, the first shared channel does not use either a first beam or a second beam.

[0558] Specifically, the first communication device is a terminal device, and the second communication device is a network device. The network device configures two beams of the same type for the terminal device. The network device can flexibly instruct the terminal device to use the first beam and / or the second beam for transmission on the first shared channel. For example, as... Figure 5 As shown, in a multi-site transmission scenario, site 1 uses the first beam to transmit with the terminal device via the first shared channel, while site 2 uses the second beam to transmit via the first shared channel. It can be understood that sites 1 and 2 repeatedly transmit the same data with the terminal device. Therefore, the network device can be configured to configure the terminal device to use both the first and second beams for transmission via the first shared channel. For example, if site 1 is configured to use the first beam for transmission with the terminal device via the first shared channel, then the network device can configure the terminal device to use the first beam for transmission via the first shared channel.

[0559] In this application, for multi-site transmission scenarios, the network device may include multiple sites, that is, the network device is a collective term for these multiple sites; or, the network device may be some of the multiple sites. For example, the network device may be one of the multiple sites, but this application does not specifically limit the choice.

[0560] Optionally, if the first shared channel is PDSCH, then the first beam and the second beam are two downlink common beams, or two uplink and downlink common beams.

[0561] Optionally, if the first shared channel is PUSCH, then the first beam and the second beam are two uplink common beams, or, are two uplink and downlink common beams.

[0562] In some implementations, the third indication information is carried in the downlink control information (DCI).

[0563] Specifically, the third indication information can be a field in the DCI, and the four different values ​​of this field can indicate the following four situations respectively: the first shared channel uses the first beam; the first shared channel uses the second beam; the first shared channel uses both the first and second beams; the first shared channel does not use either the first or second beam.

[0564] For example, if the value of the third indication information is "00", the third indication information is used to indicate that the first shared channel uses the first beam; if the value of the third indication information is "01", the third indication information is used to indicate that the first shared channel uses the second beam; if the value of the third indication information is "10", the third indication information is used to indicate that the first shared channel uses both the first and second beams; if the value of the third indication information is "11", the third indication information is used to indicate that the first shared channel does not use either the first or second beam.

[0565] It should be noted that the above is merely an example of the value of the third indication information and is not intended to limit this application. For example, if the value of the third indication information is "01", it indicates that the first shared channel uses the first beam; if the value of the third indication information is "00", it indicates that the first shared channel uses the second beam; if the value of the third indication information is "10", it indicates that the first shared channel uses both the first and second beams; if the value of the third indication information is "11", it indicates that the first shared channel does not use either the first or second beam. This application does not impose any specific limitations. Furthermore, the bit length of the third indication information can also be greater than 2 bits.

[0566] Optional, Figure 7 The illustrated embodiment also includes 703, which can be executed after 702.

[0567] 703. The first communication device transmits through the first shared channel via the first beam; or, the first communication device transmits through the first shared channel via the second beam; or, the first communication device transmits through the first beam and the second beam.

[0568] It should be noted that the above Figure 7 The illustrated embodiment uses the first communication device determining the beam used in the first shared channel as an example to introduce the technical solution of this application. The process for determining the beam used in other shared channels is similar. For example, as... Figure 5As shown, in a multi-site transmission scenario, the terminal device determines the beam used for the first shared channel as the first beam and the beam used for the second shared channel as the second beam. The terminal device can transmit with site 1 via the first beam through the first shared channel and with site 2 via the second beam through the second shared channel. This achieves multi-site transmission. In other words, through 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 channels, thereby achieving multi-site transmission.

[0569] In this embodiment, a first communication device determines a first beam and a second beam, which are beams of the same type. The first beam and the second beam are two beams indicated by the network device to the terminal device. The first communication device receives third indication information from a second communication device. The third indication information indicates any of the following: the first shared channel uses the first beam; or, the first shared channel uses the second beam; or, the first shared channel uses both the first and second beams; or, the first shared channel does not use either the first or second beam. Therefore, through the technical solution of this application, the first communication device can determine the beam used by the first shared channel based on the third indication information, thereby enabling the first communication device to correctly apply the beam indicated by the network device to the first shared channel, so that the first shared channel can use the correct beam for transmission, thereby improving communication transmission performance.

[0570] Figure 8 This is a schematic diagram of another embodiment of the beam usage method of this application. Please refer to... Figure 8 The methods of using beams include:

[0571] 801. The first communication device determines the first beam and the second beam.

[0572] The first beam and the second beam are two beams that the network device indicates to the terminal device. For example, the first beam and the second beam are two beams that the network device indicates to the terminal device via DCI.

[0573] The first and second beams are two common beams of the same type. Figure 8 In the illustrated 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.

[0574] In some implementations, the first beam and the second beam can be beams used by the same site. Alternatively, the first beam and the second beam can be beams used by different sites. For example, as... Figure 5As shown, in a scenario where a terminal device transmits data to multiple sites, site 1 uses the first beam to transmit data to the terminal device, and site 2 uses the second beam to transmit data to the terminal device.

[0575] For information on how to distinguish between the first and second beams, please refer to the aforementioned [reference]. Figure 4 The relevant descriptions of the embodiments shown will not be repeated here.

[0576] In this application, for multi-site transmission scenarios, the network device may include multiple sites, that is, the network device is a collective term for these multiple sites; or, the network device may be some of the multiple sites. For example, the network device may be one of the multiple sites, but this application does not specifically limit the choice.

[0577] Optionally, if the first communication device is a terminal device, the first beam and the second beam in step 801 above can be indicated by the second communication device to the first communication device; please refer to the following text for details. Figure 9 The relevant descriptions in the illustrated embodiments are as follows.

[0578] 802. The first communication device determines the beam used for the first SRS resource according to the first rule.

[0579] The first SRS resource uses the first beam and / or the second beam.

[0580] The above 802 is described below in conjunction with some possible scenarios.

[0581] Scenario A: If the network device configures two SRS resource sets of the same type for the terminal device, the aforementioned 802 specifically includes:

[0582] If the first SRS resource belongs to the SRS resource corresponding to the first SRS resource set in the two SRS resource sets of the same type, the first communication device determines that the beam used by the first SRS resource is the first beam; if the first SRS resource belongs to the SRS resource corresponding to the second SRS resource set in the two SRS resource sets of the same type, the first communication device determines that the beam used by the first SRS resource is the second beam.

[0583] In one possible implementation, the first SRS resource set is the SRS resource set with the smaller index among the two SRS resource sets of the same type, and the second SRS resource set is the SRS resource set with the larger index among the two SRS resource sets of the same type; or, the first SRS resource set is the SRS resource set with the earlier configuration order among the two SRS resource sets of the same type, and the second SRS resource set is the SRS resource set with the later configuration order among the two SRS resource sets of the same type.

[0584] In another possible implementation, the first SRS resource set is the SRS resource set with the larger index among the two SRS resource sets of the same type, and the second SRS resource set is the SRS resource set with the smaller index among the two SRS resource sets of the same type; or, the first SRS resource set is the SRS resource set with the later configuration order among the two SRS resource sets of the same type, and the second SRS resource set is the SRS resource set with the earlier configuration order among the two SRS resource sets of the same type.

[0585] Specifically, the types of SRS resource sets include: codebook, noncodebook, antenna switch, and beam management.

[0586] In other words, based on scenario A, the first rule mentioned above specifically includes:

[0587] If the first SRS resource belongs to the SRS resource corresponding to the first SRS resource set in the two SRS resource sets of the same type, then the first SRS resource uses the first beam; if the first SRS resource belongs to the SRS resource corresponding to the second SRS resource set in the two SRS resource sets of the same type, then the first SRS resource uses the second beam.

[0588] Scenario B: If the network device configures an SRS resource set for the terminal device, and the first SRS resource belongs to the SRS resource set, then the aforementioned 802 specifically includes any of the following:

[0589] 1. The first communication device determines that the beam used for the first SRS resource is the first beam; or,

[0590] In this implementation, if condition B is met, the first communication device can default to determining that the first SRS resource uses the first beam. That is, the first communication device does not need to consider the current beam used by the first SRS resource, but directly defaults to determining that the first SRS resource uses the first beam.

[0591] 2. The first communication device determines that the beam used for the first SRS resource is the second beam; or,

[0592] In this implementation, if condition B is met, the first communication device can default to determining that the first SRS resource uses the second beam. That is, the first communication device does not need to consider the current beam used by the first SRS resource, but directly defaults to determining that the first SRS resource uses the second beam.

[0593] 3. If the beam currently used by the SRS resource set belongs to the same beam set as the first beam, the first communication device updates the beam currently used by the first SRS resource to the first beam; if the beam currently used by the SRS resource set belongs to the same beam set as the second beam, the first communication device updates the beam currently used by the first SRS resource to the second beam.

[0594] In this implementation, if condition B is met, the first communication device determines the beam used by the first SRS resource after the update, taking into account the beam currently used by the first SRS resource. If the beam currently used by the first SRS resource belongs to the same beam set as the first beam, then the beam currently used by the first SRS resource is updated to the first beam. If the beam currently used by the first SRS resource belongs to the same beam set as the second beam, then the beam currently used by the first SRS resource is updated to the second beam.

[0595] For example, the aforementioned beam set is one of multiple beam sets composed of the same type of common beams configured by the network device for the terminal device. Different beam sets can correspond to different sites. That is, different sites use beams configured in different beam sets; in other words, beams in the same beam set are beams used by the same site. Therefore, if the beam currently used by the first SRS resource belongs to the same beam set as the first beam, the first SRS resource will be transmitted using the same site first. Therefore, the beam currently used by the first SRS resource is updated to the first beam. The same principle applies to the second beam, and will not be explained further here.

[0596] 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 is used to indicate whether the first SRS resource uses one or both of the first and second beams. The first communication device determines the beam used by the first SRS resource through the first RRC message or the first MAC-CE.

[0597] If the first RRC message or the first MAC-CE indicates that the first SRS resource uses either the first beam or the second beam, then the first communication device defaults to using the first beam or the second beam for the first SRS resource. Furthermore, the second communication device can also indicate to the first communication device via the first RRC message or the first MAC-CE that the first SRS resource uses either the first beam or the second beam; alternatively, the second communication device can also indicate to the first communication device via other RRC messages or MAC-CE that the first SRS resource uses either the first beam or the second beam.

[0598] 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 second MAC-CE is used to indicate whether the first SRS resource uses a first beam, a second beam, or both. The first communication device determines the beam used by the first SRS resource through the second RRC message or the second MAC-CE.

[0599] Note that the five methods in scenario B above are not limited to scenario B. That is, if the network device configures multiple SRS resource sets for the terminal device, the first communication device can also use the above methods to determine the beam of each SRS resource.

[0600] In other words, based on scenario B, the first rule mentioned above specifically includes:

[0601] The first SRS resource uses the first beam; or,

[0602] The first SRS resource uses the second beam; or,

[0603] If the beam currently used by the SRS resource set belongs to the same beam set as the first beam, then the beam currently used by the first SRS resource is updated to the first beam; if the beam currently used by the SRS resource set belongs to the same beam set as the second beam, then the beam currently used by the first SRS resource is updated to the second beam, or...

[0604] The first SRS resource is instructed via a first RRC message or a first MAC-CE to use either a first beam or both of a second beam; if the first RRC message or the first MAC-CE indicates that the first SRS resource uses either a first beam or a second beam, then the first SRS resource defaults to using the first beam or defaults to using the second beam; if the first RRC message or the first MAC-CE indicates that the first SRS resource uses both of a first beam and a second beam, then the first SRS resource uses both the first beam and the second beam; or,

[0605] The first SRS resource is instructed via a second RRC message or a second MAC-CE to use either a first beam, a second beam, or both the first and second beams, or the first SRS resource uses the beam indicated by the second RRC message or the second MAC-CE.

[0606] Optional, Figure 8 The illustrated embodiment also includes 803, which can be executed after 802.

[0607] 803. The first communication device transmits the first SRS resource through the beam used by the first SRS resource.

[0608] For example, the first communication device determines that the first SRS resource uses a first beam. If the first communication device is a terminal device, the terminal device transmits SRS on the first SRS resource using the first beam. If the first communication device is a network device, the network device receives SRS on the first SRS resource using the first beam.

[0609] For example, the first communication device determines that the first SRS resource uses the second beam. If the first communication device is a terminal device, the terminal device transmits SRS on the first SRS resource using the second beam. If the first communication device is a network device, the network device receives SRS on the first SRS resource using the second beam.

[0610] In this embodiment, the first communication device determines a first beam and a second beam, which are beams of the same type. 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 SRS resource according to a first rule. The beam used for the first SRS resource is the first beam and / or the second beam. Therefore, through the technical solution of this application, the first communication device can determine the beam used for the first SRS resource based on the first rule, thereby enabling the first communication device to correctly apply the beam indicated by the network device to the transmission of the corresponding reference signal, improving communication transmission performance.

[0611] This application also provides another embodiment, which is similar to the one described above. Figure 8 The embodiments shown are similar; the technical solution of this embodiment will be described below with reference to steps 8001 to 8003. The method provided in this embodiment includes:

[0612] 8001. The first communication device determines the first beam and the second beam.

[0613] The first beam and the second beam are two beams that the network device indicates to the terminal device. For example, the first beam and the second beam are two beams that the network device indicates to the terminal device via DCI.

[0614] The first and second beams are two common beams of the same type. Figure 4 In the illustrated 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.

[0615] In some implementations, the first beam and the second beam can be beams used by the same site. Alternatively, the first beam and the second beam can be beams used by different sites. For example, as... Figure 5As shown, in a scenario where a terminal device transmits data to multiple sites, site 1 uses the first beam to transmit data to the terminal device, and site 2 uses the second beam to transmit data to the terminal device.

[0616] For information on how to distinguish between the first and second beams, please refer to the aforementioned [reference]. Figure 4 The relevant descriptions of the embodiments shown will not be repeated here.

[0617] In this application, for multi-site transmission scenarios, the network device may include multiple sites, that is, the network device is a collective term for these multiple sites; or, the network device may be some of the multiple sites. For example, the network device may be one of the multiple sites, but this application does not specifically limit the choice.

[0618] Optionally, if the first communication device is a terminal device, the first beam and the second beam in step 8001 above can be indicated by the second communication device to the first communication device. Please refer to the following text for details. Figure 9 The relevant descriptions in the illustrated embodiments are as follows.

[0619] 8002. The first communication device determines the beam used for the first CSI-RS resource according to the first rule.

[0620] The first CSI-RS resource uses the first beam and / or the second beam.

[0621] The above 8002 is described below in conjunction with some possible scenarios.

[0622] Scenario A: If the network device configures two CSI-RS resource sets for the terminal device in the same CSI-RS resource configuration, the above-mentioned 8002 specifically includes:

[0623] If the first CSI-RS resource belongs to the CSI-RS resource corresponding to the first CSI-RS resource set in the two CSI-RS resource sets, the first communication device determines that the beam used by the first CSI-RS resource is the first beam; if the first CSI-RS resource belongs to the CSI-RS resource corresponding to the second CSI-RS resource set in the two CSI-RS resource sets, the first communication device determines that the beam used by the first CSI-RS resource is the second beam.

[0624] In one possible implementation, the first CSI-RS resource set is the CSI-RS resource set with the smaller index among the two CSI-RS resource sets, and the second CSI-RS resource set is the CSI-RS resource set with the larger index among the two CSI-RS resource sets; or, the first CSI-RS resource set is the CSI-RS resource set with the earlier configuration order among the two CSI-RS resource sets, and the second CSI-RS resource set is the CSI-RS resource set with the later configuration order among the two CSI-RS resource sets.

[0625] In another possible implementation, the first CSI-RS resource set is the CSI-RS resource set with the larger index among the two CSI-RS resource sets, and the second CSI-RS resource set is the CSI-RS resource set with the smaller index among the two CSI-RS resource sets; or, the first CSI-RS resource set is the CSI-RS resource set with the later configuration order among the two CSI-RS resource sets, and the second CSI-RS resource set is the CSI-RS resource set with the earlier configuration order among the two CSI-RS resource sets.

[0626] Specifically, the types of CSI-RS resource sets include: codebook, non-codebook, antenna switching, and beam management.

[0627] In other words, based on scenario A, the first rule mentioned above specifically includes:

[0628] If the first CSI-RS resource belongs to the CSI-RS resource corresponding to the first CSI-RS resource set in the two CSI-RS resource sets, then the first CSI-RS resource uses the first beam; if the first CSI-RS resource belongs to the CSI-RS resource corresponding to the second CSI-RS resource set in the two CSI-RS resource sets, then the first CSI-RS resource uses the second beam.

[0629] Scenario B: If the network device configures a CSI-RS resource set for the terminal device, and the first CSI-RS resource belongs to the CSI-RS resource set, then the aforementioned 8002 specifically includes any of the following:

[0630] 1. The first communication device determines that the beam used for the first CSI-RS resource is the first beam; or,

[0631] In this implementation, if condition B is met, the first communication device can default to determining that the first CSI-RS resource uses the first beam. That is, the first communication device does not need to consider the beam currently used by the first CSI-RS resource, but directly defaults to determining that the first CSI-RS resource uses the first beam.

[0632] 2. The first communication device determines that the beam used for the first CSI-RS resource is the second beam; or,

[0633] In this implementation, if condition B is met, the first communication device can default to determining that the beam used by the first CSI-RS resource is the second beam. That is, the first communication device does not need to consider the beam currently used by the first CSI-RS resource, but directly defaults to determining that the first CSI-RS resource uses the second beam.

[0634] 3. If the beam currently used by the CSI-RS resource set belongs to the same beam set as the first beam, the first communication device updates the beam currently used by the first CSI-RS resource to the first beam; if the beam currently used by the CSI-RS resource set belongs to the same beam set as the second beam, the first communication device updates the beam currently used by the first CSI-RS resource to the second beam.

[0635] In this implementation, if condition B is met, the first communication device determines the beam used by the first CSI-RS resource after the update, taking into account the beam currently used by the first CSI-RS resource. If the beam currently used by the first CSI-RS resource belongs to the same beam set as the first beam, then the beam currently used by the first CSI-RS resource is updated to the first beam. If the beam currently used by the first CSI-RS resource belongs to the same beam set as the second beam, then the beam currently used by the first CSI-RS resource is updated to the second beam.

[0636] For example, the aforementioned beam set is one of multiple beam sets composed of the same type of common beams configured by the network device for the terminal device. Different beam sets can correspond to different sites. That is, different sites use beams configured in different beam sets; in other words, beams in the same beam set are beams used by the same site. Therefore, if the beam currently used by the first CSI-RS resource belongs to the same beam set as the first beam, the first CSI-RS resource will be transmitted using the same site first. Therefore, the beam currently used by the first CSI-RS resource will be updated to the first beam. The same principle applies to the second beam, and will not be explained further here.

[0637] 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 is used to indicate whether the first CSI-RS resource uses one or both of the first and second beams. The first communication device determines the beam used by the first CSI-RS resource through the first RRC message or the first MAC-CE.

[0638] If the first RRC message or the first MAC-CE indicates that the first CSI-RS resource uses one of the first beam and the second beam, then the first communication device defaults to using the first beam or defaults to using the second beam for the first CSI-RS resource. Furthermore, the second communication device can also indicate to the first communication device via the first RRC message or the first MAC-CE that the first CSI-RS resource uses the first beam or the second beam; alternatively, the second communication device can also indicate to the first communication device via other RRC messages or MAC-CE that the first CSI-RS resource uses the first beam or the second beam.

[0639] 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 second MAC-CE is used to indicate whether the first CSI-RS resource uses a first beam, a second beam, or both. The first communication device determines the beam used by the first CSI-RS resource through the second RRC message or the second MAC-CE.

[0640] Note that the five methods in scenario B above are not limited to scenario B. That is, if the network device configures multiple CSI-RS resource sets for the terminal device, the first communication device can also use the above methods to determine the beam of each CSI-RS resource.

[0641] In other words, based on scenario B, the first rule mentioned above specifically includes:

[0642] The first CSI-RS resource uses the first beam; or,

[0643] The first CSI-RS resource uses the second beam; or,

[0644] If the beam currently used by the CSI-RS resource set belongs to the same beam set as the first beam, then the beam currently used by the first CSI-RS resource is updated to the first beam; if the beam currently used by the CSI-RS resource set belongs to the same beam set as the second beam, then the beam currently used by the first CSI-RS resource is updated to the second beam, or...

[0645] The first CSI-RS resource is instructed via a first RRC message or a first MAC-CE to use either a first beam or both of a second beam; if the first RRC message or the first MAC-CE indicates that the first CSI-RS resource uses either a first beam or a second beam, then the first CSI-RS resource defaults to using the first beam or defaults to using the second beam; if the first RRC message or the first MAC-CE indicates that the first CSI-RS resource uses both of a first beam and a second beam, then the first CSI-RS resource uses both the first beam and the second beam; or,

[0646] The first CSI-RS resource is instructed via a second RRC message or a second MAC-CE to use either a first beam, a second beam, or both the first and second beams, and the first CSI-RS resource uses the beam indicated by the second RRC message or the second MAC-CE.

[0647] Optionally, this embodiment also includes 8003, which can be executed after 8002.

[0648] 8003. The first communication device transmits the first CSI-RS resource through the beam used by the first CSI-RS resource.

[0649] For example, the first communication device determines that the first CSI-RS resource uses a first beam. If the first communication device is a terminal device, the terminal device transmits CSI-RS on the first CSI-RS resource using the first beam. If the first communication device is a network device, the network device receives CSI-RS on the first CSI-RS resource using the first beam.

[0650] For example, the first communication device determines that the first CSI-RS resource uses the second beam. If the first communication device is a terminal device, the terminal device transmits CSI-RS on the first CSI-RS resource using the second beam. If the first communication device is a network device, the network device receives CSI-RS on the first CSI-RS resource using the second beam.

[0651] In this embodiment, the first communication device determines a first beam and a second beam, which are beams of the same type. 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 CSI-RS resource according to a first rule. The beam used for the first CSI-RS resource is the first beam and / or the second beam. Therefore, through the technical solution of this application, the first communication device can determine the beam used for the first CSI-RS resource based on the first rule, thereby enabling the first communication device to correctly apply the beam indicated by the network device to the transmission of the corresponding reference signal, improving communication transmission performance.

[0652] The following is combined Figure 9 The illustrated embodiment describes the process by which a second communication device instructs a first communication device to indicate a first beam and a second beam.

[0653] Figure 9 This is a schematic diagram of another embodiment of the beam usage method of this application. Please refer to... Figure 9 The methods include:

[0654] 901. The second communication device sends a second instruction message to the first communication device. Correspondingly, the first communication device receives the second instruction message from the second communication device.

[0655] The second indication information is used to indicate at least two common beams of the same type. Specifically, this application's technical solution is illustrated using the example of the second indication information indicating the first and second beams. The first communication device is a terminal device, and the second communication device is a network device.

[0656] The first beam and the second beam can be two downlink common beams, or two uplink common beams, or two uplink and downlink common beams. The specific first beam and the second beam should be understood in conjunction with the above embodiments. For example, if used for PDCCH transmission, the first beam and the second beam can be two downlink common beams or two uplink and downlink common beams.

[0657] 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, thereby enabling multi-site transmission.

[0658] Optionally, the second instruction information can be carried in the DCI.

[0659] It should be noted that a network device can indicate the first beam and the second beam respectively through two DCIs; or, a network device can indicate the first beam and the second beam respectively through two TCI fields of the same DCI; or, a network device can indicate the first beam and the second beam respectively through different field values ​​in the same TCI field of the same DCI; or, a network device can indicate the first beam and the second beam through the same TCI field value.

[0660] For information on how to distinguish between the first and second beams, please refer to the aforementioned [reference]. Figure 4 The relevant description of 401 in the illustrated embodiment will not be repeated here.

[0661] Optional, Figure 9 The illustrated embodiment also includes 902 and 903, which can be executed before 901.

[0662] 902. The second communication device sends configuration information to the first communication device. Correspondingly, the first communication device receives the configuration information from the second communication device.

[0663] The configuration information is used to configure a full beam set for the first communication device, which includes at least one of the following: a downlink common beam, an uplink common beam, and an uplink and downlink common beam.

[0664] Optionally, the common beam configured by the second communication device for the first communication device can be further subdivided into multiple beam sets. The beam indices in these multiple beam sets can be different, making it easy to distinguish the beam set to which a beam belongs by the beam index. For example, beams used by different stations can be configured in different beam sets and use different indices. The first communication device can determine which station a beam corresponds to by using the indicated beam index.

[0665] Optionally, configuration information can be carried in RRC signaling.

[0666] 903. The second communication device sends a fourth instruction message to the first communication device. Correspondingly, the first communication device receives the fourth instruction message from the second communication device.

[0667] The fourth indication information is used to activate a subset of the beam set configured during the process of activating the first communication device in 902 above. The beams included in this subset are used to further indicate the first beam and the second beam to the first communication device via the second indication information in 901 above.

[0668] Optionally, the fourth indication information is carried in the MAC CE, and the beam information included in the subset of the beam set is carried in the MAC CE. For example, each beam activated by the MAC CE corresponds to a field value in the TCI field of the DCI in 901 above. When the second communication device sends a DCI to the first communication device, the first communication device can determine which of the active beams the second communication device is indicating through the value of the TCI field in the DCI. For example, the configuration information in 902 above configures 64 beams, and the MAC CE activates eight of them in the process in 903 above. These eight beams correspond to the eight field values ​​of the TCI field in the DCI. When the first communication device receives a DCI, if the value of the TCI field in the DCI is #0, it indicates that it is indicating the first of the eight active beams in the MAC CE.

[0669] Optionally, a MAC CE can activate only one type of beam or multiple types of beams. Beams of the same type activated by a MAC CE can be divided into multiple beam groups, with different beam groups corresponding to different stations. The first communication device can determine which station a beam corresponds to based on its beam group.

[0670] Optionally, multiple beam groups of the same type can be activated by a single MAC CE. For example, a single MAC CE can activate multiple beams of the same type, which can be divided into multiple beam groups. Alternatively, multiple beam groups of the same type can be activated separately by multiple MAC CEs. For example, each MAC CE can activate only one group of beams of the same type.

[0671] It should be noted that if a subset of the beam set activated by the MAC CE in step 903 above includes only one beam, the first communication device directly uses that beam, and the second communication device does not need to further indicate the beam from the activated beams through the process in step 901 above. Therefore, it can be understood that in this implementation, the first and second beams in step 901 above can be directly indicated by the MAC CE, and this application does not limit the specifics.

[0672] The above-described method embodiments can be implemented individually or in combination. The terminology and related technologies used in each embodiment can be referenced interchangeably. That is, technical solutions that are not contradictory or logically conflicting between different embodiments can be combined with each other; this application does not impose any specific limitations.

[0673] The communication device provided in the embodiments of this application is described below.

[0674] Figure 10 This is a schematic diagram of the communication device according to an embodiment of this application. Please refer to... Figure 10 Communication devices can be used to perform Figure 4 The illustrated embodiments Figures 6 to 9 The process executed by the first communication device in the embodiments shown above, as well as in the embodiments shown in steps 8001 to 8003 above, can be found in the relevant descriptions in the above method embodiments.

[0675] The communication device 1000 includes a processing module 1001. Optionally, the communication device 1000 also includes a transceiver module 1002. The transceiver module 1002 can implement corresponding communication functions, and the processing module 1001 is used for data processing. The transceiver module 1002 can also be referred to as a communication interface or a communication module.

[0676] Optionally, the communication device 1000 may further include a storage module, which can be used to store instructions and / or data. The processing module 1001 can read the instructions and / or data in the storage module to enable the communication device to implement the aforementioned method embodiments.

[0677] The communication device 1000 can be used to perform the actions performed by the first communication device in the above method embodiment. The communication device 1000 can be the first communication device or a component configurable on the first communication device. The processing module 1001 is used to perform processing-related operations on the first communication device side in the above method embodiment. Optionally, the transceiver module 1002 is used to perform receiving-related operations on the first communication device side in the above method embodiment.

[0678] Optionally, the transceiver module 1002 may include a sending module and a receiving module. The sending module is used to perform the sending operation in the above method embodiments. The receiving module is used to perform the receiving operation in the above method embodiments.

[0679] It should be noted that the communication device 1000 may include a transmitting module but not a receiving module. Alternatively, the communication device 1000 may include a receiving module but not a transmitting module. Specifically, it depends on whether the above-described scheme executed by the communication device 1000 includes both transmitting and receiving actions.

[0680] As an example, the communication device 1000 is used to perform the above. Figure 4 The actions performed by the first communication device in the illustrated embodiment.

[0681] The processing module 1001 is used to determine a first beam and a second beam, wherein the first beam and the second beam are beams of the same type; and to determine the beam used by the first control resource set according to a first rule, wherein the beam used by the first control resource set is the first beam and / or the second beam.

[0682] Optionally, the processing module 1001 is used to perform the above. Figure 4 Examples 402a and 403 shown in the embodiments.

[0683] As an example, the communication device 1000 is used to perform the above. Figure 6 The actions performed by the first communication device in the illustrated embodiment.

[0684] The processing module 1001 is used to determine a first beam and a second beam, wherein the first beam and the second beam are beams of the same type; and to determine the beam used by the first PUCCH according to a first rule, wherein the beam used by the first PUCCH is the first beam and / or the second beam.

[0685] Optionally, the processing module 1001 is used to perform the above. Figure 6603 in the illustrated embodiment.

[0686] As an example, the communication device 1000 is used to perform the above. Figure 8 The actions performed by the first communication device in the illustrated embodiment.

[0687] The processing module 1001 is used to determine a first beam and a second beam, wherein the first beam and the second beam are beams of the same type; and to determine the beam used by the first SRS resource according to a first rule, wherein the beam used by the first SRS resource is either the first beam or the second beam.

[0688] Optionally, the processing module 1001 is used to perform the above. Figure 8 803 in the illustrated embodiment.

[0689] As an example, the communication device 1000 is used to perform the above. Figure 9 The actions performed by the first communication device in the illustrated embodiment. For example, the transceiver module 1002 is used to perform the above-mentioned actions. Figure 9 901 in the illustrated embodiment. Optionally, the transceiver module 1002 is used to perform the above. Figure 9 Examples 902 and 903 shown in the embodiments.

[0690] It should be understood that the specific procedures for each module to perform the above-mentioned corresponding processes have been described in detail in the above method embodiments, and will not be repeated here for the sake of brevity.

[0691] The processing module 1001 in the above embodiments can be implemented by at least one processor or processor-related circuitry. The transceiver module 1002 can be implemented by a transceiver or transceiver-related circuitry. The transceiver module 1002 can also be referred to as a communication module or communication interface. The storage module can be implemented by at least one memory.

[0692] The communication device provided in the embodiments of this application is described below.

[0693] Figure 11 This is a schematic diagram of the communication device according to an embodiment of this application. Please refer to... Figure 11 Communication devices can be used to perform Figure 7 The process executed by the first communication device in the illustrated embodiment is described in detail in the relevant descriptions of the above method embodiments.

[0694] The communication device 1100 includes a transceiver module 1101. Optionally, the communication device 1100 also includes a processing module 1102. The transceiver module 1101 can implement corresponding communication functions, and the processing module 1102 is used for data processing. The transceiver module 1101 can also be referred to as a communication interface or a communication module.

[0695] Optionally, the communication device 1100 may further include a storage module, which can be used 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 aforementioned method embodiments.

[0696] The communication device 1100 can be used to perform the actions performed by the first communication device in the above method embodiment. The communication device 1100 can be the first communication device or a component configurable on the first communication device. The transceiver module 1101 is used to perform reception-related operations on the first communication device side in the above method embodiment, and the processing module 1102 is used to perform processing-related operations on the first communication device side in the above method embodiment.

[0697] Optionally, the transceiver module 1101 may include a sending module and a receiving module. The sending module is used to perform the sending operation in the above method embodiments. The receiving module is used to perform the receiving operation in the above method embodiments.

[0698] It should be noted that the communication device 1100 may include a transmitting module but not a receiving module. Alternatively, the communication device 1100 may include a receiving module but not a transmitting module. Specifically, it depends on whether the above-described scheme executed by the communication device 1100 includes both transmitting and receiving actions.

[0699] As an example, the communication device 1100 is used to perform the above. Figure 7 The actions performed by the first communication device in the illustrated embodiment.

[0700] Transceiver module 1101 is used to determine a first beam and a second beam, wherein the first beam and the second beam are beams of the same type; and to receive third indication information from a second communication device, wherein the third indication information is used to indicate any of the following:

[0701] The first shared channel uses the first beam; or...

[0702] The first shared channel uses the second beam; or...

[0703] The first shared channel uses the first beam and the second beam; or,

[0704] The first shared channel does not use the first beam and the second beam.

[0705] Optionally, the processing module 1102 is used to perform the above. Figure 7 703 in the illustrated embodiment.

[0706] It should be understood that the specific procedures for each module to perform the above-mentioned corresponding processes have been described in detail in the above method embodiments, and will not be repeated here for the sake of brevity.

[0707] The processing module 1102 in the above embodiments can be implemented by at least one processor or processor-related circuitry. The transceiver module 1101 can be implemented by a transceiver or transceiver-related circuitry. The transceiver module 1101 can also be referred to as a communication module or communication interface. The storage module can be implemented by at least one memory.

[0708] This application also provides a communication device 1200. Please refer to... Figure 12 The communication device 1200 includes a processor 1210 coupled to a memory 1220 for storing computer programs or instructions and / or data. The processor 1210 is used to execute the computer programs or instructions and / or data stored in the memory 1220, so that the methods in the above method embodiments are executed.

[0709] Optionally, the communication device 1200 may include one or more processors 1210.

[0710] Optionally, such as Figure 12 As shown, the communication device 1200 may also include a memory 1220.

[0711] Optionally, the communication device 1200 may include one or more memory 1220s.

[0712] Alternatively, the memory 1220 may be integrated with the processor 1210 or set separately.

[0713] Optionally, such as Figure 12 As shown, the communication device 1200 may further include a transceiver 1230, which is used for receiving and / or transmitting signals. For example, a processor 1210 is used to control the transceiver 1230 to receive and / or transmit signals.

[0714] As one option, the communication device 1200 is used to implement the operations performed by the first communication device in the above method embodiments.

[0715] For example, processor 1210 is used to implement the processing-related operations performed by the first communication device in the above method embodiment, and transceiver 1230 is used to implement the transmission-reception-related operations performed by the first communication device in the above method embodiment.

[0716] This application also provides a communication device 1300, which can be a terminal device, a processor of the terminal device, or a chip. The communication device 1300 can be used to perform the operations performed by the first communication device in the above method embodiments.

[0717] When the communication device 1300 is a terminal device Figure 13A simplified structural diagram of a terminal device is shown. (For example...) Figure 13 As shown, the terminal device includes a processor, a memory, and a transceiver. The memory can store computer program code, and the transceiver includes a transmitter 1331, a receiver 1332, radio frequency circuitry (not shown), an antenna 1333, and input / output devices (not shown).

[0718] The processor is primarily used for processing communication protocols and data, controlling terminal devices, executing software programs, and processing software program data. The memory is primarily used for storing software programs and data. The radio frequency (RF) circuit is primarily used for converting baseband signals to RF signals and processing RF signals. The antenna is primarily used for transmitting and receiving RF signals in the form of electromagnetic waves. Input / output devices, such as touchscreens, displays, and keyboards, are primarily used for receiving user input data and outputting data to the user. It should be noted that some types of terminal devices may not have input / output devices.

[0719] When data needs to be sent, the processor performs baseband processing on the data to be sent and outputs the baseband signal to the radio frequency (RF) circuit. The RF circuit then processes the baseband signal and transmits it outward as electromagnetic waves through the antenna. When data is sent to the terminal device, the RF circuit receives the RF signal through the antenna, converts it into a baseband signal, and outputs the baseband signal to the processor. The processor then converts the baseband signal back into data and processes it. For ease of explanation, Figure 13 Only one memory, processor, and transceiver are shown in the illustration. In actual terminal device products, there may be one or more processors and one or more memories. Memory can also be called storage medium or storage device, etc. Memory can be set up independently of the processor or integrated with the processor; this application does not limit this.

[0720] In this embodiment, the antenna and radio frequency circuit with transceiver function can be regarded as the transceiver module of the terminal device, and the processor with processing function can be regarded as the processing module of the terminal device.

[0721] like Figure 13 As shown, the terminal device includes a processor 1310, a memory 1320, and a transceiver 1330. The processor 1310 can also be referred to as a processing unit, processing board, processing module, processing device, etc., and the transceiver 1330 can also be referred to as a transceiver unit, transceiver, transceiver device, etc.

[0722] Optionally, the device in transceiver 1330 used to implement the receiving function can be regarded as a receiving module, and the device in transceiver 1330 used to implement the transmitting function can be regarded as a transmitting module. That is, transceiver 1330 includes a receiver and a transmitter. A transceiver may also be called a transceiver unit, transceiver module, or transceiver circuit, etc. A receiver may also be called a receiver unit, receiving module, or receiving circuit, etc. A transmitter may also be called a transmitter, transmitting module, or transmitting circuit, etc.

[0723] For example, in one implementation, processor 1310 is used to execute Figure 4 In the embodiment shown, the transceiver 1330 is used to perform the processing actions on the first communication device side. Figure 4 The transmitting and receiving operations on the first communication device side. For example, transceiver 1330 is used to perform... Figure 4 The determination operation at 401 in the illustrated embodiment may specifically involve receiving first indication information from the second communication device, used to indicate the first beam and the second beam. The processor 1310 is used to execute... Figure 4 The processing operation of 402 in the illustrated embodiment. Optionally, the processor 1310 is also configured to perform... Figure 4 The processing operations of 402a and 403 in the illustrated embodiment.

[0724] For example, in one implementation, processor 1310 is used to execute Figure 6 The illustrated embodiment shows the processing actions on the first communication device side. The transceiver 1330 is used to perform... Figure 6 The embodiment shown illustrates the transmit and receive operations on the first communication device side. The processor 1310 is used to execute... Figure 6 The processing actions in the illustrated embodiment. For example, transceiver 1330 is used to perform... Figure 6 The determination operation of 601 in the illustrated embodiment may specifically involve receiving first indication information from the second communication device, used to indicate the first beam and the second beam. Processor 1310 is used to execute... Figure 6 The processing operation of 602 in the illustrated embodiment. Optionally, the processor 1310 is also configured to perform... Figure 6 The processing operation of 603 in the illustrated embodiment.

[0725] For example, in one implementation, processor 1310 is used to execute Figure 7 The illustrated embodiment shows the processing actions on the first communication device side. The transceiver 1330 is used to perform... Figure 7 The embodiment shown illustrates the transmit and receive operations on the first communication device side. The processor 1310 is used to execute... Figure 7 The processing actions in the illustrated embodiment. For example, transceiver 1330 is used to perform... Figure 7The determining operations 701 and 702 in the illustrated embodiment may specifically involve receiving first indication information from the second communication device, used to indicate the first beam and the second beam. Optionally, the processor 1310 is further configured to perform... Figure 7 The processing operation of 703 in the illustrated embodiment.

[0726] For example, in one implementation, processor 1310 is used to execute Figure 8 The illustrated embodiment shows the processing actions on the first communication device side. The transceiver 1330 is used to perform... Figure 8 The embodiment shown illustrates the transmit and receive operations on the first communication device side. The processor 1310 is used to execute... Figure 8 The processing actions in the illustrated embodiment. For example, transceiver 1330 is used to perform... Figure 8 The determination operation of 801 in the illustrated embodiment may specifically involve receiving first indication information from the second communication device, used to indicate the first beam and the second beam. Processor 1310 is used to execute... Figure 8 The processing operation of 802 in the illustrated embodiment. Optionally, the processor 1310 is also configured to perform... Figure 8 The processing operation of 803 in the illustrated embodiment.

[0727] For example, in one implementation, processor 1310 is used to execute the processing actions on the first communication device side in the embodiments shown in steps 8001 to 8003 above. Transceiver 1330 is used to execute the transmit and receive actions on the first communication device side in the embodiments shown in steps 8001 to 8003. For example, transceiver 1330 is used to execute the determination operation 8001 in the embodiments shown in steps 8001 to 8003, specifically receiving first indication information from the second communication device to indicate the first beam and the second beam. Processor 1310 is used to execute the processing operation 8002 in the embodiments shown in steps 8001 to 8003. Optionally, processor 1310 is also used to execute the processing operation 8003 in the embodiments shown in steps 8001 to 8003.

[0728] For example, in one implementation, transceiver 1330 is used to perform... Figure 9 The embodiment shown illustrates the transmit and receive operations on the first communication device side. Transceiver 1330 is used to perform... Figure 9 901 in the illustrated embodiment. Optionally, transceiver 1330 is used to perform... Figure 9 Examples 902 and 903 shown in the embodiments.

[0729] It should be understood that Figure 13 This is merely an example and not a limitation; the terminal device described above, which includes a transceiver module and a processing module, may not rely on... Figure 11 or Figure 12The structure shown.

[0730] When the communication device 1300 is a chip, the chip includes a processor, a memory, and a transceiver. The transceiver can be an input / output circuit or a communication interface; the processor can be a processing module integrated on the chip, a microprocessor, or an integrated circuit. In the above method embodiments, the sending operation of the terminal device can be understood as the output of the chip, and the receiving operation of the terminal device in the above method embodiments can be understood as the input of the chip.

[0731] This application also provides a communication device 1400, which can be a network device or a chip. The communication device 1400 can be used to perform the above-described... Figure 4 , Figure 6 , Figure 7 and Figure 8 The operations performed by the first communication device in the method embodiment shown can also be used to perform the above-described operations. Figure 9 The operation performed by the second communication device in the method embodiment shown.

[0732] When the communication device 1400 is a network device, such as a base station. Figure 14 A simplified schematic diagram of a base station structure is shown. The base station includes sections 1410, 1420, and 1430. Section 1410 is mainly used for baseband processing and base station control; section 1410 is typically the control center of the base station, often referred to as a processor, used to control the base station to perform processing operations on the network device side in the above method embodiments. Section 1420 is mainly used to store computer program code and data. Section 1430 is mainly used for the transmission and reception of radio frequency signals and the conversion between radio frequency signals and baseband signals; section 1430 is often referred to as a transceiver module, transceiver, transceiver circuit, or transceiver unit. The transceiver module of section 1430, also referred to as a transceiver or transceiver unit, includes an antenna 1433 and a radio frequency circuit (not shown in the figure), wherein the radio frequency circuit is mainly used for radio frequency processing. Optionally, the device in section 1430 used to implement the receiving function can be regarded as a receiver, and the device used to implement the transmitting function can be regarded as a transmitter; that is, section 1430 includes a receiver 1432 and a transmitter 1431. A receiver can also be called a receiving module, receiver, or receiving circuit, while a transmitter can be called a transmitting module, transmitter, or transmitting circuit.

[0733] Sections 1410 and 1420 may include one or more circuit boards, each of which may include one or more processors and one or more memories. The processors are used to read and execute programs in the memories to implement baseband processing functions and control the base station. If multiple circuit boards exist, they can be interconnected to enhance processing capabilities. As an alternative implementation, multiple circuit boards may share one or more processors, multiple circuit boards may share one or more memories, or multiple circuit boards may simultaneously share one or more processors.

[0734] For example, in one implementation, the transceiver module in section 1430 is used to perform... Figure 4 , Figure 6 , Figure 7 and Figure 8 The transmit / receive related processes are performed by the first communication device in the illustrated embodiment. The processor in section 1410 is used to execute... Figure 4 , Figure 6 , Figure 7 and Figure 8 The illustrated embodiment and the embodiments shown in steps 8001 to 8003 above describe the processes related to the processing performed by the first communication device. In another implementation, the transceiver module in part 1430 is used to perform... Figure 9 The transmission and reception related processes are performed by the second communication device in the illustrated embodiment.

[0735] It should be understood that Figure 14 This is for illustrative purposes only and not as a limitation. The network devices mentioned above, including processors, memory, and transceivers, may be independent of... Figure 11 or Figure 12 The structure shown.

[0736] When the communication device 1400 is a chip, the chip includes a transceiver, a memory, and a processor. The transceiver can be an input / output circuit or a communication interface; the processor can be a processor integrated on the chip, a microprocessor, or an integrated circuit. In the above method embodiments, the transmitting operation of the network device can be understood as the output of the chip, and the receiving operation of the network device in the above method embodiments can be understood as the input of the chip.

[0737] This application also provides a computer-readable storage medium storing computer instructions for implementing the method executed by the first communication device in the above method embodiments.

[0738] For example, when the computer program is executed by the computer, it enables the computer to implement the method executed by the first communication device in the above method embodiments.

[0739] This application also provides a computer program product containing instructions that, when executed by a computer, cause the computer to implement the method executed by the first communication device in the above method embodiments.

[0740] This application also provides a communication system, which includes the first communication device and the second communication device described in the above embodiments.

[0741] This application also provides a chip device, including a processor, configured to call computer programs or computer instructions stored in the memory, so that the processor executes the above-described... Figure 4 , Figures 6 to 9 The beam usage method shown in the embodiments and the embodiments shown in steps 8001 to 8003 above.

[0742] In one possible implementation, the input of the chip device corresponds to the above. Figure 4 , Figures 6 to 9 The receiving operation in the illustrated embodiment corresponds to the output of the chip device described above. Figure 4 , Figures 6 to 9 The embodiments shown and the transmission operations in the embodiments shown in steps 8001 to 8003 above.

[0743] Optionally, the processor is coupled to the memory via an interface.

[0744] Optionally, the chip device may also include a memory that stores computer programs or computer instructions.

[0745] The processor mentioned above can be a general-purpose central processing unit, a microprocessor, an application-specific integrated circuit (ASIC), or one or more devices used to control the above. Figure 4 , Figures 6 to 9 The integrated circuit executing the beam usage method of the embodiments shown in the examples and the embodiments shown in steps 8001 to 8003 above. The memory mentioned in any of the above places can be read-only memory (ROM) or other types of static storage devices that can store static information and instructions, such as random access memory (RAM).

[0746] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the explanations and beneficial effects of the relevant content in any of the communication devices provided above can be referred to the corresponding method embodiments provided above, and will not be repeated here.

[0747] In this application, the terminal device or network device may include a hardware layer, an operating system layer running on top of the hardware layer, and an application layer running on top of the operating system layer. The hardware layer may include hardware such as a central processing unit (CPU), a memory management unit (MMU), and memory (also known as main memory). The operating system layer may be any one or more computer operating systems that implement business processing through processes, such as Linux, Unix, Android, iOS, or Windows. The application layer may include applications such as browsers, address books, word processing software, and instant messaging software.

[0748] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and modules described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0749] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of modules is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple modules or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be indirect coupling or communication connection through some interfaces, apparatuses, or modules, and may be electrical, mechanical, or other forms.

[0750] The modules described as separate components may or may not be physically separate. The components shown as modules may or may not be physical modules; that is, they may be located in one place or distributed across multiple network modules. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.

[0751] Furthermore, the functional modules in the various embodiments of this application can be integrated into one processing module, or each module can exist physically separately, or two or more modules can be integrated into one module. The integrated modules described above can be implemented in hardware or as software functional modules.

[0752] If the integrated module is implemented as a software functional module and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the essential contribution of the technical solution of this application, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the processes of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory, random access memory, magnetic disks, or optical disks.

[0753] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit it. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A beam pointing method, characterized in that, The method comprises: receiving configuration information, the configuration information being used for configuring two control resource set (CORESET) groups, each CORESET group comprising at least one CORESET; receiving a first DCI and a second DCI, the first DCI indicating a first common beam, the second DCI indicating a second common beam, each of the first common beam and the second common beam being used for transmission of multiple channels and / or multiple reference signals, the first DCI being a DCI carried by a physical downlink control channel (PDCCH) corresponding to a CORESET in a CORESET group with a smaller index of the two CORESET groups, the second DCI being a DCI carried by a PDCCH corresponding to a CORESET in a CORESET group with a larger index of the two CORESET groups; if a CORESET corresponding to a first PDCCH belongs to the CORESET group with the smaller index of the two CORESET groups, determining that a beam corresponding to the first PDCCH is the first common beam; or if a CORESET corresponding to a first PDCCH belongs to the CORESET group with the larger index of the two CORESET groups, determining that a beam corresponding to the first PDCCH is the second common beam.

2. The method of claim 1, wherein, The configuration information is further used for configuring two sounding reference signal (SRS) resource groups of a codebook type, comprising a first SRS resource group and a second SRS resource group; wherein SRSs in the first SRS resource group adopt the first common beam, and SRSs in the second SRS resource group adopt the second common beam.

3. A beam pointing method, characterized in that, The method comprises: receiving configuration information, the configuration information being used for configuring one control resource set (CORESET) group, the CORESET group comprising at least one CORESET; receiving a first downlink control information (DCI), the first DCI indicating two common beams of a same type, the two common beams comprising a first common beam and a second common beam; wherein each common beam is used for transmission of multiple channels and / or multiple reference signals; if a CORESET corresponding to a first physical downlink control channel (PDCCH) is a single-beam CORESET, a beam corresponding to the first PDCCH is the first common beam or the second common beam; or if a CORESET corresponding to a first PDCCH is a multi-beam CORESET, a beam corresponding to the first PDCCH is the first common beam and the second common beam.

4. The method of claim 3, wherein, The configuration information is further used for configuring two sounding reference signal (SRS) resource groups of a codebook type, comprising a first SRS resource group and a second SRS resource group; wherein SRSs in the first SRS resource group adopt the first common beam, and SRSs in the second SRS resource group adopt the second common beam.

5. The method of claim 3, wherein, The method further comprises: receive a second DCI, the second DCI scheduling a physical downlink shared channel (PDSCH), the second DCI indicating that the PDSCH uses the first common beam or the second common beam or both the first common beam and the second common beam of the two common beams.

6. A communication device, characterized by comprising: a receiving module, configured to receive configuration information, the configuration information being used to configure two control resource set (CORESET) groups, each CORESET group including at least one CORESET; the receiving module is further configured to receive a first DCI and a second DCI, the first DCI indicating a first common beam, the second DCI indicating a second common beam, each of the first common beam and the second common beam being used for transmission of multiple channels and / or multiple reference signals, the first DCI being a DCI carried by a physical downlink control channel (PDCCH) corresponding to a CORESET in a CORESET group with a smaller index of the two CORESET groups, the second DCI being a DCI carried by a PDCCH corresponding to a CORESET in a CORESET group with a larger index of the two CORESET groups; a processing module, configured to determine, if a CORESET corresponding to a first PDCCH belongs to the CORESET group with the smaller index of the two CORESET groups, a beam corresponding to the first PDCCH as the first common beam; or determine, if the CORESET corresponding to the first PDCCH belongs to the CORESET group with the larger index of the two CORESET groups, the beam corresponding to the first PDCCH as the second common beam. the configuration information is further used to configure two codebook-type sounding reference signal (SRS) resource groups, including a first SRS resource group and a second SRS resource group; wherein 7. The communication apparatus according to claim 6, wherein SRSs in the first SRS resource group use the first common beam, and SRSs in the second SRS resource group use the second common beam. comprising:

8. A communications device, characterized by a receiving module, configured to receive configuration information, the configuration information being used to configure one control resource set (CORESET) group, the CORESET group including at least one CORESET; the receiving module is further configured to receive a first downlink control information (DCI), the first DCI indicating two common beams of a same type, the two common beams including a first common beam and a second common beam; wherein each common beam is used for transmission of multiple channels and / or multiple reference signals; a processing module, configured to determine, if a CORESET corresponding to a first physical downlink control channel (PDCCH) is a single-beam CORESET, a beam corresponding to the first PDCCH as the first common beam or the second common beam; or determine, if the CORESET corresponding to the first PDCCH is a multi-beam CORESET, the beam corresponding to the first PDCCH as the first common beam and the second common beam. ​ 9. The apparatus of claim 8, wherein, The configuration information is also used to configure two types of codebook-based sounding reference signal (SRS) resource groups, including a first SRS resource group and a second SRS resource group. The SRS in the first SRS resource group adopts the first common beam, and the SRS in the second SRS resource group adopts the second common beam.

10. The apparatus of claim 8, wherein The receiving module is further configured to receive a second DCI, the second DCI scheduling a physical downlink shared channel (PDSCH), and the second DCI indicating that the PDSCH adopts the first common beam, or the second common beam, or both the first common beam and the second common beam.

11. A communications device, characterized by The communication apparatus comprises a processing module configured to perform the processing operations of the method of any one of claims 1 to 5.

12. The communication apparatus according to claim 11, wherein, The communication apparatus further comprises a transceiver module configured to perform the transceiving operations of the method of any one of claims 1 to 5.

13. A communications device, characterized by The communication apparatus comprises: a memory configured to store computer programs or computer instructions; a processor configured to execute the computer programs or computer instructions stored in the memory, so that the communication apparatus performs the method of any one of claims 1 to 5.

14. A communications device, characterized by The communication apparatus comprises a processor configured to execute computer programs or computer instructions in a memory to perform the method of any one of claims 1 to 5.

15. A communications device, characterized by The communication apparatus comprises a processor configured to perform the method of any one of claims 1 to 5.

16. A computer readable storage medium characterized by: The computer program is stored on the communication apparatus and, when executed by the communication apparatus, causes the communication apparatus to perform the method of any one of claims 1 to 5.

17. A computer program product, characterised in that, The computer program product comprises computer instructions which, when executed by a computer, cause the computer to perform the method of any one of claims 1 to 5.

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