Beam direction method, apparatus, and communication equipment

Abstract

To provide a beam indication method, device, and communication apparatus capable of indicating a reception beam for instruction information transmitted by a medium access control layer (MAC) or downlink control information (DCI).SOLUTION: A method includes a step in which a terminal apparatus receives first instruction information using a first reception beam and determines a second reception beam to be used for communication between a subsequent terminal apparatus and a network apparatus. The first reception beam corresponds to a first transmission and reception point (TRP) or a second TRP. By determining the second reception beam corresponding to the second TRP on the basis of the first instruction information, the terminal apparatus receives indication signaling using the second reception beam when receiving the indication signaling transmitted by the subsequent network apparatus using the second TRP, thereby enabling indication of the reception beam during communication and improving the success rate of signaling reception.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] This disclosure relates to the field of wireless communication technologies, and particularly to a beam indication method, apparatus, and communication device.

Background Art

[0002] In New Radio (NR), especially when the frequency band is in Frequency Range (FR) 2, since the high-frequency channel has fast attenuation, it is necessary to use beam-based transmission and reception to ensure coverage.

[0003] In Rel-16, dedicated beams such as the physical downlink control channel (PDCCH), physical downlink shared channel (PDSCH), physical uplink shared channel (PUSCH), physical uplink control channel (PUCCH), and each uplink and downlink reference signal are independently indicated, resulting in a large signaling overhead. Therefore, in order to reduce the signaling overhead, a common beam can be used, that is, one common beam can be indicated for a plurality of channels and / or reference signals. For example, it is a common beam shared by at least two channels or at least two reference signals.

[0004] However, how to indicate the transmission or reception of a beam during communication becomes an issue to be solved.

Summary of the Invention

Problems to be Solved by the Invention

[0005] The beam designation method, apparatus, and communication equipment proposed in this disclosure are intended to solve the technical problem that designation information transmitted by MAC or DCI cannot designate the receiving beam of that designation information. [Means for solving the problem]

[0006] A beam direction method proposed by an embodiment of one aspect of the present disclosure is applied to a terminal device and includes the steps of receiving first direction information transmitted from a network device using a first received beam, wherein the first direction information indicates a second received beam, where the first received beam corresponds to a first or second TRP, and the second received beam corresponds to the second TRP.

[0007] Selectively, the first receiving beam corresponds to the first TRP, and the second receiving beam corresponds to the initial beam of the second TRP.

[0008] Selectively, the first instruction information is a control element (MAC CE) of the first media access control layer, where the first MAC CE indicates an identifier of a first control resource set associated with the second TRP and a transmission setting instruction (TCI) state index corresponding to the initial beam of the second TRP, the initial beam of the second TRP corresponding to the first control resource set.

[0009] Selectively, the first instruction information is a second MAC CE and first downlink control information (DCI), where the second MAC CE indicates a plurality of activated TCI state indices, the first DCI indicates one TCI state index corresponding to the initial beam of the second TRP, and the one TCI state index is one of the plurality of activated TCI state indices included in the second MAC CE.

[0010] Selectively, the first receiving beam corresponds to the first TRP and the second receiving beam corresponds to the refresh beam of the second TRP, or the first receiving beam corresponds to the second TRP and the second receiving beam corresponds to the refresh beam of the second TRP.

[0011] Selectively, the first instruction information is a third MAC CE, where the third MAC CE indicates an identifier of a second control resource set associated with the second TRP and a TCI state index corresponding to the refresh beam of the second TRP, the refresh beam of the second TRP corresponding to the second control resource set.

[0012] Selectively, the first instruction information is a fourth MAC CE and a second DCI, where the fourth MAC CE indicates a plurality of activated TCI state indices, the second DCI indicates a single TCI state index corresponding to the refresh beam of the second TRP, and the single TCI state index is one of the plurality of activated TCI state indices contained in the fourth MAC CE.

[0013] Selectively, the multiple activated TCI state indices transported to the fourth MAC CE include one TCI state index corresponding to the initial beam of the second TRP.

[0014] Selectively, the first DCI and the second DCI include a target indicator field for indicating the TRP identifier and / or the corresponding control resource set pool index corresponding to the TCI state index.

[0015] Selectively, in the first DCI and the second DCI, each TCI state index corresponds to a pre-configured TRP identifier and / or a control resource set pool index.

[0016] Selectively, the TRP identifier and / or the corresponding control resource set pool index corresponding to the TCI state index in the first DCI and the second DCI is the TRP identifier and / or control resource set pool index indicated by the MAC CE that activates the TCI state index.

[0017] Selectively, the method further includes the step of determining the first received beam, wherein the first received beam is the initial received beam of the control resource set CORESET#0 associated with the first TRP.

[0018] Selectively, the method further includes the step of receiving a second instruction information using a known receiving beam corresponding to the first TRP, wherein the second instruction information is for determining the first receiving beam.

[0019] Selectively, the known received beam corresponds to CORESET#0 associated with the first TRP, or the known received beam corresponds to a third control resource set associated with the first TRP and is indicated by third instruction information transmitted by CORESET#0 associated with the first TRP.

[0020] Selectively, at least one of the first MAC CE, the second MAC CE, the third MAC CE, and the fourth MAC CE includes one or more TCI state indexes corresponding to a TRP identifier, or one or more TCI state indexes corresponding to a control resource set pool index.

[0021] Selectively, at least one of the first MAC CE, the second MAC CE, the third MAC CE, and the fourth MAC CE includes a plurality of TCI state indexes corresponding to identifiers of a plurality of TRPs, wherein each TCI state index has the identifier of the corresponding TRP, or a plurality of TCI state indexes corresponding to a plurality of control resource set pool indexes, wherein each TCI state index has the control resource set pool index.

[0022] Selectively, at least one of the first MAC CE, the second MAC CE, the third MAC CE, and the fourth MAC CE includes an indicator field corresponding to at least one TCI state index, the indicator field indicating whether or not the at least one TCI state index exists in the at least one MAC CE.

[0023] Another beam directing method proposed by an embodiment of another aspect of the present disclosure is applied to network equipment and includes the step of transmitting first directing information to terminal equipment using a first transmit beam, wherein the first directing information directs a second receive beam of the terminal equipment, the first transmit beam corresponds to a first receive beam of the terminal equipment, the first receive beam corresponds to a first transmit / receive point (TRP) or a second TRP, and the second receive beam corresponds to the second TRP.

[0024] Selectively, the first receiving beam is the beam of the first TRP, and the second receiving beam is the initial beam of the second TRP.

[0025] Optionally, the first indication information is a control element (MAC CE) of the first media access control layer, where the first MAC CE indicates an identifier of a first control resource set related to the second TRP and one transmission configuration indication (TCI) state index corresponding to an initial beam of the second TRP, and the initial beam of the second TRP corresponds to the first control resource set.

[0026] Optionally, the first indication information is a second MAC CE and first downlink control information (DCI), where the second MAC CE indicates a plurality of activated TCI state indexes, and the first DCI indicates one TCI state index corresponding to an initial beam of the second TRP, and the one TCI state index is one of the plurality of activated TCI state indexes included in the second MAC CE.

[0027] Optionally, the first received beam corresponds to a beam of the first TRP, the second received beam corresponds to an updated beam of the second TRP, or the first received beam corresponds to a beam of the second TRP, and the second received beam corresponds to an updated beam of the second TRP.

[0028] Optionally, the first indication information is a third MAC CE, where the third MAC CE indicates an identifier of a second control resource set related to the second TRP and one TCI state index corresponding to an updated beam of the second TRP, and the updated beam of the second TRP corresponds to the second control resource set.

[0029] Optionally, the first indication information is a fourth MAC CE and a second DCI, where the fourth MAC CE indicates a plurality of activated TCI state indexes, and the second DCI indicates one TCI state index corresponding to the updated beam of the second TRP, and the one TCI state index is one of the plurality of activated TCI state indexes included in the fourth MAC CE.

[0030] Optionally, among the plurality of TCI state indexes carried by the fourth MAC CE, one TCI state index corresponding to the initial beam of the second TRP is included.

[0031] Optionally, the first DCI and the second DCI include a target indication field for indicating the identifier of the TRP corresponding to the TCI state index and / or the corresponding control resource set pool index.

[0032] Optionally, in the first DCI and the second DCI, each TCI state index corresponds to a preset identifier of one TRP and / or a control resource set pool index of one.

[0033] Optionally, the identifier of the TRP corresponding to the TCI state index in the first DCI and the second DCI and / or the corresponding control resource set pool index is the TRP identifier and / or the control resource set pool index indicated by the MAC CE that activates the TCI state index.

[0034] Optionally, the first received beam is an initial received beam corresponding to the control resource set CORESET#0 related to the first TRP.

[0035] Selectively, the method further includes the step of transmitting a second instruction information to the terminal device using a transmit beam corresponding to a known receive beam of the terminal device, wherein the second instruction information indicates the first receive beam of the terminal device, and the known receive beam corresponds to the first TRP.

[0036] Selectively, the known received beam corresponds to CORESET#0 associated with the first TRP, or the known received beam corresponds to a third control resource set associated with the first TRP and is indicated by third instruction information transmitted by CORESET#0 associated with the first TRP.

[0037] Selectively, at least one of the first MAC CE, the second MAC CE, the third MAC CE, and the fourth MAC CE includes one or more TCI state indexes corresponding to a TRP identifier, or one or more TCI state indexes corresponding to a control resource set pool index.

[0038] Selectively, at least one of the first MAC CE, the second MAC CE, the third MAC CE, and the fourth MAC CE includes a plurality of TCI state indexes corresponding to identifiers of a plurality of TRPs, wherein each TCI state index has the identifier of the corresponding TRP, or a plurality of TCI state indexes corresponding to a plurality of control resource set pool indexes, wherein each TCI state index has the control resource set pool index.

[0039] Selectively, at least one of the first MAC CE, the second MAC CE, the third MAC CE, and the fourth MAC CE includes an indicator field corresponding to at least one TCI state index, the indicator field indicating whether or not the at least one TCI state index exists in the at least one MAC CE.

[0040] A beam indicating device proposed by an embodiment of one aspect of the present disclosure is applied to a terminal device and is a receiving module for receiving first indicating information transmitted from a network device using a first receiving beam, wherein the first indicating information includes a receiving module indicating a second receiving beam, where the first receiving beam corresponds to a first or second transmission / reception point (TRP) or a second TRP, and the second receiving beam corresponds to the second TRP.

[0041] In one possible implementation, the first receiving beam corresponds to the first TRP, and the second receiving beam corresponds to the initial beam of the second TRP.

[0042] One possible implementation is that the first instruction information is a control element (MAC CE) of the first media access control layer, where the first MAC CE indicates an identifier of a first control resource set associated with the second TRP and a transmission setting instruction (TCI) state index corresponding to the initial beam of the second TRP, and the initial beam of the second TRP corresponds to the first control resource set.

[0043] One possible implementation is that the first instruction information is a second MAC CE and first downlink control information (DCI), where the second MAC CE indicates a plurality of activated TCI state indices, the first DCI indicates one TCI state index corresponding to the initial beam of the second TRP, and the one TCI state index is one of the plurality of activated TCI state indices included in the second MAC CE.

[0044] One possible implementation is that the first receiving beam corresponds to the first TRP and the second receiving beam corresponds to the refresh beam of the second TRP, or the first receiving beam corresponds to the second TRP and the second receiving beam corresponds to the refresh beam of the second TRP.

[0045] One possible implementation is that the first instruction information is a third MAC CE, where the third MAC CE indicates an identifier for a second control resource set associated with the second TRP and a TCI state index corresponding to the refresh beam of the second TRP, and the refresh beam of the second TRP corresponds to the second control resource set.

[0046] One possible implementation is that the first instruction information is a fourth MAC CE and a second DCI, where the fourth MAC CE indicates a plurality of activated TCI state indices, the second DCI indicates a single TCI state index corresponding to the refresh beam of the second TRP, and the single TCI state index is one of the plurality of activated TCI state indices contained in the fourth MAC CE.

[0047] One possible implementation is that the multiple activated TCI state indices carried to the fourth MAC CE include one TCI state index corresponding to the initial beam of the second TRP.

[0048] One possible implementation is that the first DCI and the second DCI include a target indicator field for indicating the TRP identifier and / or the corresponding control resource set pool index corresponding to the TCI state index.

[0049] One possible implementation is that in the first DCI and the second DCI, each TCI state index corresponds to a pre-configured TRP identifier and / or to a control resource set pool index.

[0050] In one possible implementation, the TRP identifier and / or the corresponding control resource set pool index corresponding to the TCI state index in the first DCI and the second DCI is the TRP identifier and / or control resource set pool index indicated by the MAC CE that activates the TCI state index.

[0051] In one possible implementation, the apparatus further includes a determination module for determining the first received beam, where the first received beam is the initial received beam of the control resource set CORESET#0 associated with the first TRP.

[0052] In one possible implementation, the receiving module further receives second instruction information using a known receiving beam corresponding to the first TRP, and the second instruction information is for determining the first receiving beam.

[0053] One possible implementation is that the known received beam is the received beam of CORESET#0 associated with the first TRP, or the known received beam is determined based on third instruction information transmitted by CORESET#0 associated with the first TRP and is the received beam corresponding to the third control resource set associated with the first TRP.

[0054] One possible implementation is that at least one of the first MAC CE, the second MAC CE, the third MAC CE, and the fourth MAC CE includes one or more TCI state indexes corresponding to a TRP identifier, or one or more TCI state indexes corresponding to a control resource set pool index.

[0055] One possible implementation is that at least one of the first MAC CE, the second MAC CE, the third MAC CE, and the fourth MAC CE includes a plurality of TCI state indexes corresponding to identifiers of a plurality of TRPs, wherein each TCI state index has an identifier of the corresponding TRP, or a plurality of TCI state indexes corresponding to a plurality of control resource set pool indexes, wherein each TCI state index has a control resource set pool index.

[0056] One possible implementation is that at least one of the first MAC CE, the second MAC CE, the third MAC CE, and the fourth MAC CE includes an indicator field corresponding to at least one TCI state index, the indicator field indicating whether or not the at least one TCI state index exists in the at least one MAC CE.

[0057] Another beam indicating device proposed by an embodiment of another aspect of the present disclosure is applied to a network device and includes a transmitting module for transmitting first indicating information to a terminal device using a first transmitting beam, wherein the first indicating information indicates a second receiving beam of the terminal device, the first transmitting beam corresponds to a first receiving beam of the terminal device, the first receiving beam corresponds to a first or second TRP, and the second receiving beam corresponds to the second TRP.

[0058] In one possible implementation, the first receiving beam corresponds to the first TRP, and the second receiving beam corresponds to the initial beam of the second TRP.

[0059] One possible implementation is that the first instruction information is a control element (MAC CE) of the first media access control layer, where the first MAC CE indicates an identifier of a first control resource set associated with the second TRP and a transmission setting instruction (TCI) state index corresponding to the initial beam of the second TRP, and the initial beam of the second TRP corresponds to the first control resource set.

[0060] One possible implementation is that the first instruction information is a second MAC CE and first downlink control information (DCI), where the second MAC CE indicates a plurality of activated TCI state indices, the first DCI indicates one TCI state index corresponding to the initial beam of the second TRP, and the one TCI state index is one of the plurality of activated TCI state indices included in the second MAC CE.

[0061] One possible implementation is that the first receiving beam corresponds to the first TRP and the second receiving beam corresponds to the refresh beam of the second TRP, or the first receiving beam corresponds to the second TRP and the second receiving beam corresponds to the refresh beam of the second TRP.

[0062] One possible implementation is that the first instruction information is a third MAC CE, where the third MAC CE indicates an identifier for a second control resource set associated with the second TRP and a TCI state index corresponding to the refresh beam of the second TRP, and the refresh beam of the second TRP corresponds to the second control resource set.

[0063] One possible implementation is that the first instruction information is a fourth MAC CE and a second DCI, where the fourth MAC CE indicates a plurality of activated TCI state indices, the second DCI indicates a single TCI state index corresponding to the refresh beam of the second TRP, and the single TCI state index is one of the plurality of activated TCI state indices contained in the fourth MAC CE.

[0064] One possible implementation is that the multiple TCI state indices being transported to the fourth MAC CE include one TCI state index corresponding to the initial beam of the second TRP.

[0065] One possible implementation is that the first DCI and the second DCI include a target indicator field for indicating the TRP identifier and / or the corresponding control resource set pool index corresponding to the TCI state index.

[0066] One possible implementation is that in the first DCI and the second DCI, each TCI state index corresponds to a pre-configured TRP identifier and / or to a control resource set pool index.

[0067] In one possible implementation, the TRP identifier and / or the corresponding control resource set pool index corresponding to the TCI state index in the first DCI and the second DCI is the TRP identifier and / or control resource set pool index indicated by the MAC CE that activates the TCI state index.

[0068] In one possible implementation, the first received beam is the initial received beam corresponding to the control resource set CORESET#0 associated with the first TRP.

[0069] In one possible implementation, the transmitting module further transmits second instruction information to the terminal device using a transmitting beam corresponding to a known receiving beam of the terminal device, wherein the second instruction information instructs the first receiving beam of the terminal device, and the known receiving beam corresponds to the first TRP.

[0070] One possible implementation is that the known received beam corresponds to CORESET#0 associated with the first TRP, or the known received beam corresponds to a third control resource set associated with the first TRP and is indicated by a third instruction information transmitted by CORESET#0 associated with the first TRP.

[0071] One possible implementation is that at least one of the first MAC CE, the second MAC CE, the third MAC CE, and the fourth MAC CE includes one or more TCI state indexes corresponding to a TRP identifier, or one or more TCI state indexes corresponding to a control resource set pool index.

[0072] One possible implementation is that at least one of the first MAC CE, the second MAC CE, the third MAC CE, and the fourth MAC CE includes a plurality of TCI state indexes corresponding to identifiers of a plurality of TRPs, wherein each TCI state index has an identifier of the corresponding TRP, or a plurality of TCI state indexes corresponding to a plurality of control resource set pool indexes, wherein each TCI state index has a control resource set pool index.

[0073] One possible implementation is that at least one of the first MAC CE, the second MAC CE, the third MAC CE, and the fourth MAC CE includes an indicator field corresponding to at least one TCI state index, the indicator field indicating whether or not the at least one TCI state index exists in the at least one MAC CE.

[0074] A terminal device proposed by an embodiment of another aspect of the present disclosure includes, hereby, a transceiver, a memory, and a processor, wherein the memory stores a computer program, the transceiver transmits and receives data under the control of the processor, the processor reads the computer program in the memory and performs an operation to receive first instruction information transmitted from a network device using a first receive beam, the first instruction information instructs a second receive beam, where the first receive beam corresponds to a first transmit / receive point (TRP) or a second TRP, and the second receive beam corresponds to a second TRP.

[0075] In one possible implementation, the first receiving beam corresponds to the first TRP, and the second receiving beam corresponds to the initial beam of the second TRP.

[0076] One possible implementation is that the first instruction information is a control element (MAC CE) of the first media access control layer, where the first MAC CE indicates an identifier of a first control resource set associated with the second TRP and a transmission setting instruction (TCI) state index corresponding to the initial beam of the second TRP, and the initial beam of the second TRP corresponds to the first control resource set.

[0077] One possible implementation is that the first instruction information is a second MAC CE and first downlink control information (DCI), where the second MAC CE indicates a plurality of activated TCI state indices, the first DCI indicates one TCI state index corresponding to the initial beam of the second TRP, and the one TCI state index is one of the plurality of activated TCI state indices included in the second MAC CE.

[0078] One possible implementation is that the first receiving beam corresponds to the first TRP and the second receiving beam corresponds to the refresh beam of the second TRP, or the first receiving beam corresponds to the second TRP and the second receiving beam corresponds to the refresh beam of the second TRP.

[0079] One possible implementation is that the first instruction information is a third MAC CE, where the third MAC CE indicates an identifier for a second control resource set associated with the second TRP and a TCI state index corresponding to the refresh beam of the second TRP, and the refresh beam of the second TRP corresponds to the second control resource set.

[0080] One possible implementation is that the first instruction information is a fourth MAC CE and a second DCI, where the fourth MAC CE indicates a plurality of activated TCI state indices, the second DCI indicates a single TCI state index corresponding to the refresh beam of the second TRP, and the single TCI state index is one of the plurality of activated TCI state indices contained in the fourth MAC CE.

[0081] One possible implementation is that the multiple activated TCI state indices carried to the fourth MAC CE include one TCI state index corresponding to the initial beam of the second TRP.

[0082] One possible implementation is that the first DCI and the second DCI include a target indicator field for indicating the TRP identifier and / or the corresponding control resource set pool index corresponding to the TCI state index.

[0083] One possible implementation is that in the first DCI and the second DCI, each TCI state index corresponds to a pre-configured TRP identifier and / or to a control resource set pool index.

[0084] In one possible implementation, the TRP identifier and / or the corresponding control resource set pool index corresponding to the TCI state index in the first DCI and the second DCI is the TRP identifier and / or control resource set pool index indicated by the MAC CE that activates the TCI state index.

[0085] In one possible implementation, the processor further performs an operation to determine the first received beam, where the first received beam is the initial received beam of the control resource set CORESET#0 associated with the first TRP.

[0086] In one possible implementation, the processor further performs an operation to receive second instruction information using a known received beam corresponding to the first TRP, the second instruction information being for determining the first received beam.

[0087] One possible implementation is that the known received beam corresponds to CORESET#0 associated with the first TRP, or the known received beam corresponds to a third control resource set associated with the first TRP and is indicated by a third instruction information transmitted by CORESET#0 associated with the first TRP.

[0088] One possible implementation is that at least one of the first MAC CE, the second MAC CE, the third MAC CE, and the fourth MAC CE includes one or more TCI state indexes corresponding to a TRP identifier, or one or more TCI state indexes corresponding to a control resource set pool index.

[0089] One possible implementation is that at least one of the first MAC CE, the second MAC CE, the third MAC CE, and the fourth MAC CE includes a plurality of TCI state indexes corresponding to identifiers of a plurality of TRPs, wherein each TCI state index has an identifier of the corresponding TRP, or a plurality of TCI state indexes corresponding to a plurality of control resource set pool indexes, wherein each TCI state index has a control resource set pool index.

[0090] One possible implementation is that at least one of the first MAC CE, the second MAC CE, the third MAC CE, and the fourth MAC CE includes an indicator field corresponding to at least one TCI state index, the indicator field indicating whether or not the at least one TCI state index exists in the at least one MAC CE.

[0091] Network equipment proposed by embodiments of other aspects of the present disclosure includes a transceiver, memory, and a processor, wherein the memory stores a computer program; the transceiver transmits and receives data under the control of the processor; and the processor reads the computer program in the memory and performs an operation to transmit first instruction information to a terminal device using a first transmit beam, wherein the first instruction information instructs a second receive beam of the terminal device, the first transmit beam corresponds to a first receive beam of the terminal device, the first receive beam corresponds to a first transmit / receive point (TRP) or a second TRP, and the second receive beam corresponds to a second TRP.

[0092] In one possible implementation, the first receiving beam corresponds to the first TRP, and the second receiving beam corresponds to the initial beam of the second TRP.

[0093] One possible implementation is that the first instruction information is a control element (MAC CE) of the first media access control layer, where the first MAC CE indicates an identifier of a first control resource set associated with the second TRP and a transmission setting instruction (TCI) state index corresponding to the initial beam of the second TRP, and the initial beam of the second TRP corresponds to the first control resource set.

[0094] One possible implementation is that the first instruction information is a second MAC CE and first downlink control information (DCI), where the second MAC CE indicates a plurality of activated TCI state indices, the first DCI indicates one TCI state index corresponding to the initial beam of the second TRP, and the one TCI state index is one of the plurality of activated TCI state indices included in the second MAC CE.

[0095] One possible implementation is that the first receiving beam corresponds to the first TRP and the second receiving beam corresponds to the refresh beam of the second TRP, or the first receiving beam corresponds to the second TRP and the second receiving beam corresponds to the refresh beam of the second TRP.

[0096] One possible implementation is that the first instruction information is a third MAC CE, where the third MAC CE indicates an identifier for a second control resource set associated with the second TRP and a TCI state index corresponding to the refresh beam of the second TRP, and the refresh beam of the second TRP corresponds to the second control resource set.

[0097] One possible implementation is that the first instruction information is a fourth MAC CE and a second DCI, where the fourth MAC CE indicates a plurality of activated TCI state indices, the second DCI indicates a single TCI state index corresponding to the refresh beam of the second TRP, and the single TCI state index is one of the plurality of activated TCI state indices contained in the fourth MAC CE.

[0098] One possible implementation is that the multiple TCI state indices being transported to the fourth MAC CE include one TCI state index corresponding to the initial beam of the second TRP.

[0099] One possible implementation is that the first DCI and the second DCI include a target indicator field for indicating the TRP identifier and / or the corresponding control resource set pool index corresponding to the TCI state index.

[0100] One possible implementation is that in the first DCI and the second DCI, each TCI state index corresponds to a pre-configured TRP identifier and / or to a control resource set pool index.

[0101] In one possible implementation, the TRP identifier and / or the corresponding control resource set pool index corresponding to the TCI state index in the first DCI and the second DCI is the TRP identifier and / or control resource set pool index indicated by the MAC CE that activates the TCI state index.

[0102] In one possible implementation, the first received beam is the initial received beam corresponding to the control resource set CORESET#0 associated with the first TRP.

[0103] In one possible implementation, the processor further performs an operation to transmit second instruction information to the terminal device using a transmit beam corresponding to a known receive beam of the terminal device, wherein the second instruction information instructs the first receive beam of the terminal device, and the known receive beam corresponds to the first TRP.

[0104] One possible implementation is that the known received beam corresponds to CORESET#0 associated with the first TRP, or the known received beam corresponds to a third control resource set associated with the first TRP and is indicated by a third instruction information transmitted by CORESET#0 associated with the first TRP.

[0105] One possible implementation is that at least one of the first MAC CE, the second MAC CE, the third MAC CE, and the fourth MAC CE includes one or more TCI state indexes corresponding to a TRP identifier, or one or more TCI state indexes corresponding to a control resource set pool index.

[0106] One possible implementation is that at least one of the first MAC CE, the second MAC CE, the third MAC CE, and the fourth MAC CE includes a plurality of TCI state indexes corresponding to identifiers of a plurality of TRPs, wherein each TCI state index has an identifier of the corresponding TRP, or a plurality of TCI state indexes corresponding to a plurality of control resource set pool indexes, wherein each TCI state index has a control resource set pool index.

[0107] One possible implementation is that at least one of the first MAC CE, the second MAC CE, the third MAC CE, and the fourth MAC CE includes an indicator field corresponding to at least one TCI state index, the indicator field indicating whether or not the at least one TCI state index exists in the at least one MAC CE.

[0108] A communication system proposed by an embodiment of another aspect of the present disclosure includes terminal equipment and network equipment, wherein the terminal equipment is capable of implementing the beam pointing method described in one aspect, and the network equipment is capable of implementing the beam pointing method described in another aspect.

[0109] A computer storage medium proposed by an embodiment of another aspect of the present disclosure stores computer-executable instructions and, after the computer-executable instructions are executed by a processor, can implement the beam direction method described in one aspect.

[0110] A computer storage medium proposed by an embodiment of another aspect of the present disclosure stores computer-executable instructions and, after the computer-executable instructions are executed by a processor, can implement the beam direction method described in the other aspect.

[0111] A computer program product that includes a computer program proposed by an embodiment of another aspect of the present disclosure can implement the beam pointing method described in one or another aspect when the computer program is executed by a processor.

[0112] The technical solutions provided by the embodiments of this disclosure may include the following technical effects:

[0113] The terminal device uses a first receive beam to receive first instruction information and determines a second receive beam to be used for communication between the subsequent terminal device and the network device. Here, the first receive beam corresponds to a first or second TRP, and based on the first instruction information, the terminal device determines a second receive beam corresponding to the second TRP. As a result, if a signaling signal is received in which a subsequent network device transmits a beam instruction using the second TRP, the terminal device uses the second receive beam to receive it, thereby realizing the instruction beam instruction for the instruction information during communication and improving the success rate of signaling reception.

[0114] Additional features and advantages of this application are partially shown in the following description, some of which will become apparent from the following description or will be understood through the practice of this application. [Brief explanation of the drawing]

[0115] The above and / or additional aspects and advantages of this disclosure will be made clearer and easier to understand by the description of the embodiments in conjunction with the following drawings. [Figure 1] This is a schematic flowchart of the beam direction method provided by the embodiments of this disclosure. [Figure 2] This is a schematic flowchart of another beam directing method provided by the embodiments of this disclosure. [Figure 3] This is a schematic flowchart of another beam directing method provided by the embodiments of this disclosure. [Figure 4]This is a schematic flowchart of another beam directing method provided by the embodiments of this disclosure. [Figure 5] This is a schematic diagram of the beam pointing device provided by the embodiments of this disclosure. [Figure 6] This is a schematic diagram of another beam pointing device provided by the embodiments of this disclosure. [Figure 7] This is a block diagram of a terminal device provided by the embodiments of this disclosure. [Figure 8] This is a schematic diagram of the network equipment provided by the embodiments of this disclosure. [Modes for carrying out the invention]

[0116] Herein, exemplary embodiments are described in detail, and examples are shown in the drawings. Where the following description relates to the drawings, unless otherwise stated, the same numbers in different drawings represent the same or similar elements. The embodiments described below in the exemplary embodiments do not represent all embodiments consistent with the embodiments of the present disclosure. Rather, they are merely examples of apparatus and methods consistent with some aspects of the embodiments of the present disclosure, which are described in detail in the appended claims.

[0117] The terms used in the embodiments of this disclosure are for the purpose of describing specific embodiments and are not intended to limit the embodiments of this disclosure. The singular forms “one” and “the said” used in the embodiments and appended claims of this disclosure are also intended to include the plural form unless the context clearly indicates otherwise. The terms “and / or” as used herein refer to any combination of one or more related enumerated items or all possible combinations.

[0118] In the embodiments of this disclosure, we may use terms such as first, second, third, etc., to describe various types of information, but it should be understood that this information should not be limited to these terms. These terms are simply used to distinguish the same type of information. For example, without departing from the scope of the embodiments of this disclosure, first information may be called second information, and similarly, second information may be called first information. Depending on the context, the words “then” and “if” as used herein may be interpreted as “when…” or “in the case of…” or “in response to a decision.”

[0119] The embodiments of this disclosure will be described in detail below, examples of which are shown in the accompanying drawings, where the same or similar reference numerals from beginning to end indicate the same or similar elements. The embodiments described below with reference to the accompanying drawings are for illustrative purposes only and should not be understood as limitations to this disclosure.

[0120] The beam directing method, apparatus, and communication equipment provided in this disclosure will be described in detail below with reference to the drawings.

[0121] Explanation of terms: The initial beam is the beam used for the first time to perform uplink and downlink transmission between the terminal equipment and the Transmission and Reception Point (TRP); the known beam is a beam that has already been used to perform uplink and downlink transmission between the terminal equipment and the TRP; the refresh beam is a beam that is scheduled to be used to perform uplink and downlink transmission between the terminal equipment and the TRP; the TRP corresponds to the serving cell or adjacent cell of the terminal equipment; the Control Resource Set (CORESET) is the configuration resource and is a resource for transmitting Downlink Control Information (DCI) signaling by the Downlink Control Channel (PDCCH).

[0122] For a Control Resource Set Pool Index (CORESET Pool Index), one CORESET Pool Index value corresponds to one or more CORESETs, and each CORESET Pool Index corresponds to one TRP. In other words, CORESETs corresponding to different CORESET Pool Index values ​​are used for PDCCH channels of different TRPs.

[0123] Figure 1 is a schematic flowchart of a beam directing method provided by an embodiment of this disclosure, which is applied to terminal equipment.

[0124] As shown in Figure 1, the following step 101 is included.

[0125] In step 101, the first receive beam is used to receive first instruction information transmitted from the network device, the first instruction information instructs the second receive beam, where the first receive beam corresponds to a first or second TRP, and the second receive beam corresponds to a second TRP.

[0126] The beam pointing methods of the embodiments of this disclosure can be applied to any terminal equipment. The terminal equipment can be scattered throughout a mobile communication system, and each terminal equipment may be stationary or moving. The terminal equipment may also be called a mobile station, user station, mobile unit, user unit, wireless unit, remote unit, mobile device, terminal equipment, wireless device, wireless communication equipment, remote device, mobile user station, access user equipment, mobile user equipment, wireless user equipment, remote user equipment, handheld device, user agent, mobile client, client, in-vehicle equipment, wearable device, or several other appropriate terms. The terminal equipment may be a mobile phone, personal digital assistant (PDA), wireless modem, wireless communication equipment, handheld device, tablet computer, laptop computer, cordless telephone, wireless local loop (WLL) station, etc., and may communicate with network equipment in a mobile communication system.

[0127] Here, network equipment is located in a radio access network to provide wireless access functionality to terminal equipment. Network equipment may be a base station (BS). Network equipment can wirelessly communicate with terminal equipment via one or more antennas. Network equipment can provide communication coverage to the geographic area of ​​its location. The base station may include different types such as macro base stations, micro base stations, relay stations, and access points. In some embodiments, base stations may be referred to to those skilled in the art as base station transceivers, radio base stations, access points, radio transceivers, Basic Service Sets (BSS), Extended Service Sets (ESS), Node B, evolved Node B (eNB or eNodeB), or other appropriate terms. Exemplarily, in a 5G system, a base station is called a gNB. For ease of explanation, in embodiments of this disclosure, devices that provide wireless communication functionality to the terminal equipment are collectively referred to as network equipment.

[0128] In this embodiment, the terminal device uses a first receive beam to receive first instruction information and determines a second receive beam to be used during subsequent communication between the terminal device and the network device. Here, the first receive beam corresponds to a first transmit / receive point (TRP) or a second TRP, meaning that the first receive beam may receive either first instruction information transmitted from the first TRP or first instruction information transmitted from the second TRP. In one implementation, if the first instruction information is transmitted from the first TRP, the first TRP notifies the terminal device of the subsequent second receive beam using the first instruction information, the second receive beam corresponds to the second TRP, and the terminal device uses the second receive beam to receive communication content transmitted from the second TRP, which includes data on a shared channel or signaling or reference signals on a control channel. In another implementation, if the first instruction information is transmitted from the second TRP, i.e., the first received beam corresponds to the second TRP and the second received beam still corresponds to the second TRP, the second TRP notifies the terminal equipment by the first instruction information that the subsequent second transmitted beam is still transmitted by the second TRP, and updates the received beam used when the terminal equipment receives the communication content transmitted from itself in accordance with the second TRP. By determining the second received beam corresponding to the second TRP based on the first instruction information, when receiving beam instruction signaling transmitted by subsequent network equipment using the second TRP, the second received beam is used for reception, completing the instruction of the received beam, and if the TRP switches or the TRP itself requires a beam update during communication, the instruction information is implemented for the received beam, improving the success rate of signaling reception.

[0129] Based on the above embodiment, the terminal device uses the first received beam to receive the first instruction information transmitted from the network device. However, in different scenarios, the second TRP beam corresponding to the second received beam indicated by the first instruction information will be different, and may indicate the initial beam or the refresh beam. Three different scenarios will be described below.

[0130] In one scenario, the first received beam corresponds to the first TRP, and the second received beam corresponds to the initial beam of the second TRP. In this embodiment, the terminal device uses the first received beam to receive first instruction information transmitted from the network device, where the first instruction information indicates the initial beam corresponding to the second TRP. For example, the first TRP may correspond to the TRP of the serving cell, and the second TRP may correspond to the TRP of the serving cell or an adjacent cell. Since the terminal device has not previously communicated with the second TRP, it does not know the initial beam to communicate with the second TRP and needs to send instruction information via the first TRP to indicate it.

[0131] In this scenario, the signaling that gives the first instruction information is also different, and will be explained in the following two implementation forms.

[0132] In one embodiment of this disclosure, the first instruction information is a control element (referred to as a control element, CE, or control unit) MAC CE of the first medium access control (MAC) layer.

[0133] Here, the first MAC CE indicates an identifier for a first control resource set associated with the second TRP and a Transmission Configuration Indicator (TCI) state index corresponding to the initial beam of the second TRP, where the initial beam of the second TRP corresponds to the first control resource set. Here, the identifier for the first control resource set is, for example, CORESET#1, or CORESET#2, or CORESET#3, and is not limited to these in this embodiment.

[0134] In this embodiment, the first MAC CE activates one TCI state index, which corresponds to the initial beam of the second TRP, and the initial beam of the second TRP corresponds to the first control resource set, i.e., the first control resource set also corresponds to this activated TCI state index. The TCI state index activated by the MAC CE can further be used for the transmission of other control resource sets belonging to the same group as the first control resource set, or for the transmission of a Physical Downlink Shared Channel (PDSCH), Physical Uplink Shared Channel (PUSCH), Physical Uplink Control Channel (PUCCH), or reference signal, the reference signal including a Channel State Information-Reference Signal (CSI-RS), Sounding Reference Signal (SRS), Positioning Reference Signal (PRS), Demodulation Reference Signal (DMRS), etc. In other words, one TCI state index activated by MAC CE can correspond to one common beam.

[0135] In another implementation of this disclosure, the first instruction information is a second MAC CE and first downlink control information (DCI), i.e., the first instruction information is determined based on the second MAC CE and the first downlink control information (DCI).

[0136] Here, the second MAC CE indicates multiple activated TCI state indices, the first DCI indicates one TCI state index corresponding to the initial beam of the second TRP, and this one TCI state index is one of the multiple activated TCI state indices contained in the second MAC CE. That is, when the second MAC CE indicates that multiple TCI state indices have been activated, the first DCI is used to determine one TCI state index from the multiple activated TCI state indices, and this determined TCI state index is set as the TCI state index corresponding to the initial beam of the second TRP. A single TCI state index indicated by DCI can be used to transmit other control resource sets belonging to the same group as the first control resource set, or to transmit physical downlink shared channels (PDSCH), physical uplink shared channels (PUSCH), physical uplink control channels (PUCCH), or reference signals, including channel state information-reference signals (CSI-RS), sounding reference signals (SRS), positioning reference signals (PRS), demodulation reference signals (DMRS), etc. In other words, a single TCI state index indicated by DCI can correspond to a single common beam.

[0137] In the second scenario, the first receive beam used in conjunction with the terminal equipment corresponds to the first TRP, and the second receive beam corresponds to the refresh beam of the second TRP, i.e., the refresh beam of the second TRP is also indicated by the first TRP transmitting instruction information. Considering the first and second scenarios together, i.e., both the initial beam and the refresh beam of the second TRP are indicated by the first TRP transmitting instruction information. For example, the first TRP may correspond to the TRP of the serving cell, and the second TRP may correspond to the TRP of the serving cell or an adjacent cell.

[0138] In the third scenario, the first receive beam used in response to the terminal equipment corresponds to the second TRP, and the subsequent receive beam still corresponds to the second TRP, that is, it instructs itself to update the receive beam corresponding to the second TRP, thereby updating the receive beam corresponding to the terminal equipment. Thus, the first receive beam corresponds to the second TRP, and the second receive beam corresponds to the update beam of the second TRP. Considering the first and third scenarios together, that is, the initial beam of the second TRP is instructed by the first TRP transmitting instruction information, and the update beam of the second TRP is instructed by the second TRP transmitting instruction information. For example, the first TRP may correspond to the TRP of the serving cell, and the second TRP may correspond to the TRP of the serving cell or an adjacent cell.

[0139] The signaling for providing the first instruction information differs between the second and third scenarios, and these will be explained in the following two implementation forms.

[0140] In one implementation, the first instruction information is a third MAC CE, where the third MAC CE indicates an identifier for a second control resource set associated with a second TRP and a TCI state index corresponding to the update beam of the second TRP, and the update beam of the second TRP corresponds to the second control resource set. Here, the identifier for the second control resource set is, for example, CORESET#1, CORESET#2, or CORESET#3, and is not limited to this embodiment. A single TCI state index activated by MAC CE can further be used for the transmission of other control resource sets belonging to the same group as the second control resource set, or for physical downlink shared channels (PDSCH), physical uplink shared channels (PUSCH), physical uplink control channels (PUCCH), or reference signals, including channel state information-reference signals (CSI-RS), sounding reference signals (SRS), positioning reference signals (PRS), demodulation reference signals (DMRS), etc. In other words, a single TCI state index activated by MAC CE can correspond to a single common beam.

[0141] Furthermore, the TCI state index is used to indicate beams; that is, the corresponding beam can be determined based on the reference signal resource indicated by the TCI state index.

[0142] The identifier of the second control resource set may be the same as the identifier of the first control resource set, or it may be different from the identifier of the first control resource set. For example, the identifier of the first control resource set may be CORESET#0 and the identifier of the second control resource set may be CORESET#1, or both the identifier of the first control resource set and the identifier of the second control resource set may be CORESET#0 or CORESET#1. This example is not limited to these examples.

[0143] In another implementation, the first instruction information is a fourth MAC CE and a second DCI, where the fourth MAC CE indicates multiple activated TCI state indices, the second DCI indicates one TCI state index corresponding to the update beam of the second TRP, and the one TCI state index is one of the multiple activated TCI state indices contained in the fourth MAC CE. A single TCI state index indicated by DCI can further be used for the transmission of other control resource sets belonging to the same group as a second control resource set, or for physical downlink shared channels (PDSCH), physical uplink shared channels (PUSCH), physical uplink control channels (PUCCH), or reference signals, including channel state information reference signals (CSI-RS), sounding reference signals (SRS), positioning reference signals (PRS), demodulation reference signals (DMRS), etc. In other words, a single TCI state index indicated by DCI can correspond to a single common beam.

[0144] In one embodiment of the embodiments of the present disclosure, at least one of the first MAC CE, second MAC CE, third MAC CE, and fourth MAC CE includes one or more TCI state indexes corresponding to a TRP identifier, or one or more TCI state indexes corresponding to a control resource set pool index.

[0145] In a second embodiment of the embodiments of the present disclosure, at least one of the first MAC CE, second MAC CE, third MAC CE, and fourth MAC CE includes a plurality of TCI state indexes corresponding to a plurality of TRP identifiers, wherein each TCI state index has an identifier for the corresponding TRP, or a plurality of TCI state indexes corresponding to a plurality of control resource set pool indexes, wherein each TCI state index has a corresponding control resource set pool index.

[0146] In a second embodiment of the embodiments of this disclosure, at least one of the first, second, third, and fourth MAC CEs includes an indicator field corresponding to at least one TCI state index, the indicator field indicating whether at least one TCI state index exists in at least one MAC CE. For example, (first indicator field), (second indicator field), (activation TCI field for the first TRP), (activation TCI field for the second TRP). The first indicator field corresponds to the first TRP, and for example, if the indicator field is 0, it indicates that this MAC CE (activation TCI field for the first TRP) does not have a TCI state index, i.e., the TCI state corresponding to the first TRP is not activated. The second indicator field corresponds to the second TRP. For example, if the indicator field is 1, it indicates that this MAC CE (the activated TCI field of the second TRP) has a TCI state index, meaning that the TCI state corresponding to the second TRP is activated.

[0147] In embodiments of this disclosure, when a MAC CE indicates multiple activated TCI state indices, when indicating the initial beam of a second TRP, one MAC CE needs to indicate multiple TCI state indices and one DCI needs to indicate one TCI state index corresponding to the initial beam of the second TRP. Furthermore, if it is necessary to indicate a refresh beam of the second TRP, another MAC CE needs to indicate multiple TCI state indices and one DCI needs to indicate one TCI state index corresponding to the refresh beam of the second TRP. In other words, two MAC CEs are required to indicate the initial beam of the second TRP and then the subsequent refresh beam, and the MAC CEs are integrated to save signaling overhead.

[0148] In one implementation, the multiple activated TCI state indices carried to the fourth MAC CE of this embodiment include one TCI state index corresponding to the initial beam of the second TRP, that is, the multiple activated TCI state indices carried to the fourth MAC CE include at least one TCI state index corresponding to an initial beam and one TCI state index corresponding to a refresh beam. This means that when it is necessary to indicate the initial beam of the second TRP, it is only necessary to send a DCI to indicate one TCI state index corresponding to the initial beam of the second TRP from the multiple activated TCI state indices carried to the fourth MAC CE, or, without requiring a DCI to indicate the initial beam of the second TRP, the specified TCI state index among the multiple activated TCI state indices of the fourth MAC CE is directly identified as the initial beam of the second TRP. For example, a TCI state index is specified to the TCI state index with the smallest corresponding TCI state index value, or a fourth MAC CE provides a mapping relationship between a combination of codepoints and TCI states in the DCI's TCI indication field, where the TCI state combination includes one or two TCI states, and the specified TCI state index is one TCI state index within the TCI state combination corresponding to the specified DCI codepoint, for example, the specified DCI codepoint is the codepoint with the smallest possible value for the codepoint. Then, if it is necessary to indicate the refresh beam of the second TRP, another DCI is sent to indicate one of the TCI state indices among the multiple activated TCI state indices of the fourth MAC CE corresponding to the refresh beam of the second TRP. By indicating the MAC CEs for both the initial beam indication and the refresh beam indication with a single MAC CE, MAC CE savings are achieved, reducing system costs.

[0149] In embodiments of this disclosure, in some scenarios, the first received beam corresponds to the first TRP and the second received beam corresponds to the initial beam of the second TRP, and in another scenario, the first received beam corresponds to the first TRP and the second received beam corresponds to the refresh beam of the second TRP. In these two scenarios, if the MAC CE indicates multiple activated TCI state indices, the DCI needs to indicate one TCI state index from the multiple activated TCI state indices and whether this one TCI state index corresponds to the first TRP or the second TRP, thereby improving the efficiency and accuracy of the indication. Hereinafter, these embodiments will be described in detail by the following three implementations.

[0150] In the first embodiment, the first DCI and the second DCI include a target indicator field, where the target indicator field indicates the identifier of the TRP corresponding to the TCI state index and / or the corresponding control resource set pool index. That is, the target indicator field indicates which TRP and / or control resource set pool the TCI state index corresponds to. Here, each control resource set pool index and TRP have a correspondence, and once the control resource set pool index is determined, it is determined which TRP it corresponds to, for example, the first TRP or the second TRP.

[0151] In a second embodiment, in the first and second DCIs, each TCI state index corresponds to a pre-configured TRP identifier and / or a control resource set pool index. That is, different TCI state indexes have the same TRP identifier, i.e., different TRP identifiers result in different corresponding TCI state indexes. For example, if the TCI state indexes corresponding to the first TRP are 1 and 2, then the TCI state indexes corresponding to the second TRP are 3 and 4. This allows determining which TRP corresponds to which TRP by having the TCI state index correspond to a pre-configured TRP identifier, for example, the first TRP or the second TRP. Alternatively, different TCI state indexes have the same control resource set pool index, and determining which TRP corresponds to which TRP by having the TCI state index correspond to a pre-configured control resource set pool index, for example, the first TRP or the second TRP. Here, each control resource set pool index and TRP have a corresponding relationship. Once a control resource set pool index is determined, it is determined which TRP it corresponds to, for example, the first TRP or the second TRP.

[0152] In a third implementation, the TRP identifier and / or the corresponding control resource set pool index corresponding to the TCI status index in the first DCI and the second DCI is the TRP identifier and / or control resource set pool index indicated by the MAC CE that activates the TCI status index.

[0153] To illustrate with an example of the first DCI, in one implementation of this disclosure, the TRP identifier corresponding to the TCI state index in the first DCI is the TRP identifier indicated by the MAC CE that activates the TCI state index; that is, the MAC CE indicates the TRP identifier. In one implementation, the MAC CE format has different bit positions for TCI state indices that activate different TRPs, and based on the bit position, it is possible to determine which TRP the activated TCI state index belongs to. In a second embodiment, the control resource set pool index corresponding to the TCI state index in the first DCI is the control resource set pool index indicated by the MAC CE that activates the TCI state index. In a third implementation, the MAC CE format includes a CORESET ID, and each CORESET ID corresponds to a unique control resource set pool index, so the TRP corresponding to this TCI state index can be determined based on the CORESET ID. In a fourth embodiment, different bit values ​​can also be set to indicate whether or not to activate the TCI state index of each TRP, and to indicate which TRP's TCI state index has been activated.

[0154] Figure 2 is a schematic flowchart of another beam directing method provided by an embodiment of the present disclosure. This method is applied to terminal equipment and, as shown in Figure 2, the method includes the following steps 201-202.

[0155] In step 201, the first received beam is determined.

[0156] In one embodiment of the embodiments of this disclosure, the first received beam is the initial received beam of the control resource set CORESET#0 associated with the first TRP. Here, the initial received beam is the beam that the terminal equipment uses for the first time to perform uplink and downlink transmission with the first TRP. The initial received beam of CORESET#0 associated with the first TRP can be determined by the terminal equipment based on the value of the Reference Signal Receiving Power (RSRP) detected for the Synchronization Signal and PBCH Block (SSB) transmitted from the network equipment. When the terminal equipment detects that the RSRP value exceeds a threshold, it initiates random access using the PRACH resource corresponding to this SSB, i.e., determines the received beam corresponding to this SSB as the initial received beam of CORESET#0, thereby determining the first received beam.

[0157] In another embodiment of the embodiments of the present disclosure, a known receiving beam corresponding to a first TRP is used to receive a second instruction information, and the second instruction information indicates the first receiving beam. That is, a known receiving beam corresponding to a first TRP is used to receive the second instruction information, and the second instruction information indicates the first receiving beam.

[0158] Here, the known received beam is the beam already used when the terminal device receives the downlink transmission sent from the first TRP. In one implementation, the known received beam corresponds to CORESET#0 associated with the first TRP, i.e., the known beam is the beam corresponding to CORESET#0 determined when the terminal device detects the RSRP value of the synchronization signal block SSB transmitted from the network device and the RSRP value is greater than a threshold. In another implementation, the known received beam corresponds to a third control resource set associated with the first TRP and is indicated by third instruction information transmitted by CORESET#0 associated with the first TRP.

[0159] In step 202, the first receive beam is used to receive first instruction information transmitted from the network device, where the first instruction information indicates a second receive beam, the first receive beam corresponds to a first transmit / receive point (TRP) or a second TRP, and the second receive beam corresponds to a second TRP.

[0160] Step 202 can be described by referring to the description of any embodiment above, as the principle is the same and will not be described here.

[0161] In the beam indication method of this embodiment, terminal equipment receives first indication information using a first received beam and determines a second received beam to be used when subsequent terminal equipment communicates with network equipment. Here, the first received beam corresponds to a first or second TRP; that is, the first received beam may be the received beam used when receiving first indication information transmitted from the first TRP, or the received beam used when receiving first indication information transmitted from the second TRP. By determining a second received beam corresponding to the second TRP based on the first indication information, when subsequent network equipment receives indication signaling transmitted using the second TRP, it uses the second received beam to receive it, completing the indication of the received beam and improving the success rate of signaling reception.

[0162] Figure 3 is a schematic flowchart of another beam directing method provided by an embodiment of the present disclosure, which is applied to network equipment.

[0163] As shown in Figure 3, this method includes the following step 301.

[0164] In step 301, a first instruction information is transmitted to a terminal device using a first transmit beam, where the first instruction information instructs a second receive beam of the terminal device, the first transmit beam corresponds to the first receive beam of the terminal device, the first receive beam corresponds to a first transmit / receive point (TRP) or a second TRP, and the second receive beam corresponds to a second TRP.

[0165] The beam directing method of the embodiments of this disclosure is applicable to any network equipment, where the network equipment is located in a radio access network to provide radio access functionality to terminal equipment. The network equipment may be a base station (BS). The network equipment can wirelessly communicate with terminal equipment via one or more antennas. The network equipment can provide communication coverage to the geographic area of ​​its location. The base station may include different types such as macro base stations, micro base stations, relay stations, and access points. In some embodiments, the base station may be referred to to those skilled in the art as a base station transceiver, radio base station, access point, radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), Node B, evolved Node B (eNB or eNodeB), or other appropriate terminology. Exemplarily, in a 5G system, the base station is called a gNB. For ease of explanation, in embodiments of this disclosure, the devices that provide radio communication functionality to the terminal equipment are collectively referred to as network equipment.

[0166] Herein, terminal equipment may also be called by those skilled in the art a mobile station, user station, mobile unit, user unit, wireless unit, remote unit, mobile device, terminal equipment, wireless device, wireless communication equipment, remote device, mobile user station, access user equipment, mobile user equipment, wireless user equipment, remote user equipment, handheld device, user agent, mobile client, client, in-vehicle equipment, wearable device, or several other appropriate terms. Terminal equipment may also be a mobile phone, personal digital assistant (PDA), wireless modem, wireless communication equipment, handheld device, tablet computer, laptop computer, cordless telephone, wireless local loop (WLL) station, etc., which can communicate with network equipment in a mobile communication system.

[0167] In this embodiment, the network device transmits first instruction information to the terminal device using a first transmit beam, and the terminal device determines a second receive beam based on the first instruction information, where the second receive beam is the receive beam used by the terminal device to communicate with the network device again after receiving the first instruction information.

[0168] In this embodiment, the first transmit beam corresponds to the first receive beam of a terminal device, where the first receive beam corresponds to either a first transmit / receive point (TRP) or a second TRP. That is, the first receive beam may receive either first instruction information transmitted from the first TRP, or first instruction information transmitted from the second TRP. In one implementation, when the first instruction information is transmitted from the first TRP, the first TRP can notify the terminal device of the subsequent second receive beam using the first instruction information, and the second receive beam corresponds to the second TRP. In another implementation, when the first instruction information is transmitted from the second TRP, that is, when the first receive beam corresponds to the second TRP and the second receive beam still corresponds to the second TRP, the corresponding terminal device updates the receive beam used when receiving communication content transmitted from the second TRP. Based on the first instruction information, the terminal device's second receive beam is determined, so that when a subsequent network device uses the second TRP to transmit instruction beam signaling, the terminal device receives it using the second receive beam, completing the instruction of the terminal device's receive beam. If the TRP switches during communication or if the TRP's transmit beam needs to be updated, the system enables beam switching and improves the success rate of signaling reception.

[0169] Based on the above embodiment, the network device transmits first instruction information to the terminal device using a first transmit beam. In different scenarios, the first receive beam corresponds to either a first or second TRP, and the beam of the second TRP corresponding to the second transmit beam indicated by the first instruction information is different; it may indicate the initial beam or the refresh beam. Three different scenarios are described below.

[0170] In one scenario, the first received beam corresponds to the beam of the first TRP, and the second received beam corresponds to the initial beam of the second TRP. In this embodiment, the network device uses the first transmitted beam of the first TRP to send first instruction information to the terminal device, where the first instruction information indicates the initial beam corresponding to the second TRP. For example, the first TRP may correspond to the TRP of a serving cell, and the second TRP may correspond to the TRP of a serving cell or an adjacent cell. Since the terminal device has not previously communicated with the second TRP, it does not know the initial beam to communicate with the second TRP and needs to send the first instruction information via the first TRP to indicate it.

[0171] In this scenario, the signaling that gives the first instruction information is also different, and will be explained in the following two implementation forms.

[0172] In one embodiment of this disclosure, the first instruction information is a control element (CE) MAC CE of the first medium access control (MAC) layer, or a control unit MAC CE of the first medium access control layer.

[0173] Here, the first MAC CE indicates an identifier for a first control resource set associated with the second TRP and a transmission setting instruction (TCI) state index corresponding to the initial beam of the second TRP, where the initial beam of the second TRP corresponds to the first control resource set. Here, the identifier for the first control resource set is, for example, CORESET#1, CORESET#2, or CORESET#3, and is not limited to these in this embodiment.

[0174] In this embodiment, the first MAC CE activates one TCI state index, which corresponds to the initial beam of the second TRP, and the initial beam of the second TRP corresponds to the first control resource set, i.e., the first control resource set also corresponds to this activated TCI state index. The TCI state index activated by the MAC CE can further be used for the transmission of other control resource sets belonging to the same group as the first control resource set, or for the transmission of a Physical Downlink Shared Channel (PDSCH), Physical Uplink Shared Channel (PUSCH), Physical Uplink Control Channel (PUCCH), or reference signal, the reference signal including a Channel State Information Reference Signal (CSI-RS), Sounding Reference Signal (SRS), Positioning Reference Signal (PRS), Demodulation Reference Signal (DMRS), etc. In other words, one TCI state index activated by MAC CE can correspond to one common beam.

[0175] In another implementation of this disclosure, the first instruction information is a second MAC CE and first downlink control information (DCI), i.e., the first instruction information is determined based on the second MAC CE and the first downlink control information (DCI).

[0176] Here, the second MAC CE indicates multiple activated TCI state indices, the first DCI indicates one TCI state index corresponding to the initial beam of the second TRP, and this one TCI state index is one of the multiple activated TCI state indices contained in the second MAC CE. That is, when the second MAC CE indicates that multiple TCI state indices have been activated, the first DCI is used to determine one TCI state index from the multiple activated TCI state indices, and this determined TCI state index is set as the TCI state index corresponding to the initial beam of the second TRP. A single TCI state index indicated by DCI can be used to transmit other control resource sets belonging to the same group as the first control resource set, or to transmit physical downlink shared channels (PDSCH), physical uplink shared channels (PUSCH), physical uplink control channels (PUCCH), or reference signals, including channel state information reference signals (CSI-RS), sounding reference signals (SRS), positioning reference signals (PRS), demodulation reference signals (DMRS), etc. In other words, a single TCI state index indicated by DCI can correspond to a single common beam.

[0177] In the second scenario, the first received beam corresponds to the beam of the first TRP, and the second received beam corresponds to the refresh beam of the second TRP, i.e., the refresh beam of the second TRP is also indicated by the first TRP transmitting instruction information. Considering the first and second scenarios together, i.e., both the initial beam and the refresh beam of the second TRP are indicated by the first TRP transmitting first instruction information. For example, the first TRP may correspond to the TRP of the serving cell, and the second TRP may correspond to the TRP of the serving cell or an adjacent cell.

[0178] In the third scenario, the receiving beam corresponding to itself is instructed to update in response to the second TRP. As a result, the first receiving beam corresponds to the second TRP, and the second receiving beam corresponds to the update beam of the second TRP. Considering the first and third scenarios together, that is, the initial beam of the second TRP is instructed by the first TRP transmitting instruction information, and the update beam of the second TRP is instructed by the second TRP transmitting the first instruction information. For example, the first TRP corresponds to the serving cell's TRP, and the second TRP can correspond to the serving cell's or an adjacent cell's TRP.

[0179] The signaling for providing the first instruction information differs between the second and third scenarios, and these will be explained in the following two implementation forms.

[0180] In one implementation, the first instruction information is a third MAC CE, where the third MAC CE indicates an identifier for a second control resource set associated with a second TRP and a TCI state index corresponding to the update beam of the second TRP, and the update beam of the second TRP corresponds to the second control resource set. Here, the identifier for the second control resource set is, for example, CORESET#1, CORESET#2, or CORESET#3, and is not limited to this embodiment. A single TCI state index activated by MAC CE can further be used for the transmission of other control resource sets belonging to the same group as the second control resource set, or for physical downlink shared channels (PDSCH), physical uplink shared channels (PUSCH), physical uplink control channels (PUCCH), or reference signals, including channel state information reference signals (CSI-RS), sounding reference signals (SRS), positioning reference signals (PRS), demodulation reference signals (DMRS), etc. In other words, a single TCI state index activated by MAC CE can correspond to a single common beam.

[0181] Furthermore, the TCI state index is used to indicate beams; that is, the corresponding beam can be determined based on the reference signal resource indicated by the TCI state index.

[0182] The identifier of the second control resource set may be the same as the identifier of the first control resource set, or it may be different from the identifier of the first control resource set. For example, the identifier of the first control resource set may be CORESET#0 and the identifier of the second control resource set may be CORESET#1, or both the identifier of the first control resource set and the identifier of the second control resource set may be CORESET#0 or CORESET#1. This example is not limited to these examples.

[0183] In another implementation, the first instruction information is a fourth MAC CE and a second DCI, where the fourth MAC CE indicates multiple activated TCI state indices, the second DCI indicates one TCI state index corresponding to the update beam of the second TRP, and the one TCI state index is one of the multiple activated TCI state indices contained in the fourth MAC CE. A single TCI state index indicated by DCI can further be used for the transmission of other control resource sets belonging to the same group as a second control resource set, or for physical downlink shared channels (PDSCH), physical uplink shared channels (PUSCH), physical uplink control channels (PUCCH), or reference signals, including channel state information reference signals (CSI-RS), sounding reference signals (SRS), positioning reference signals (PRS), demodulation reference signals (DMRS), etc. In other words, a single TCI state index indicated by DCI can correspond to a single common beam.

[0184] In one embodiment of the embodiments of the present disclosure, at least one of the first MAC CE, second MAC CE, third MAC CE, and fourth MAC CE includes one or more TCI state indexes corresponding to a TRP identifier, or one or more TCI state indexes corresponding to a control resource set pool index.

[0185] In a second embodiment of the embodiments of the present disclosure, at least one of the first MAC CE, second MAC CE, third MAC CE, and fourth MAC CE includes a plurality of TCI state indexes corresponding to a plurality of TRP identifiers, each TCI state index having the identifier of the corresponding TRP, or a plurality of TCI state indexes corresponding to a plurality of control resource set pool indexes, each TCI state index having the control resource set pool index.

[0186] In a second embodiment of the embodiments of this disclosure, at least one of the first, second, third, and fourth MAC CEs includes an indicator field corresponding to at least one TCI state index, the indicator field indicating whether at least one TCI state index exists in at least one MAC CE. For example, (first indicator field), (second indicator field), (activation TCI field for the first TRP), (activation TCI field for the second TRP). The first indicator field corresponds to the first TRP, and if the indicator field is 0, it indicates that this MAC CE (activation TCI field for the first TRP) does not have a TCI state index, i.e., the TCI state corresponding to the first TRP is not activated. The second indicator field corresponds to the second TRP, and if the indicator field is 1, it indicates that this MAC CE (the activated TCI field of the second TRP) has a TCI state index, meaning that the TCI state corresponding to the second TRP is activated.

[0187] In embodiments of this disclosure, when a MAC CE indicates multiple activated TCI state indices, when indicating the initial beam of a second TRP, one MAC CE needs to indicate multiple TCI state indices and one DCI needs to indicate one TCI state index corresponding to the initial beam of the second TRP. Furthermore, if it is necessary to indicate a refresh beam of the second TRP, another MAC CE needs to indicate multiple TCI state indices and one DCI needs to indicate one TCI state index corresponding to the refresh beam of the second TRP. In other words, two MAC CEs are required to indicate the initial beam of the second TRP and then the subsequent refresh beam, and the MAC CEs are integrated to save signaling overhead.

[0188] In one implementation, the multiple activated TCI state indices carried to the fourth MAC CE of this embodiment include one TCI state index corresponding to the initial beam of the second TRP, that is, the multiple activated TCI state indices carried to the fourth MAC CE include at least one TCI state index corresponding to an initial beam and one TCI state index corresponding to a refresh beam. This means that when it is necessary to indicate the initial beam of the second TRP, it is only necessary to send a DCI to indicate one TCI state index corresponding to the initial beam of the second TRP from the multiple activated TCI state indices carried to the fourth MAC CE, or, without requiring a DCI to indicate the initial beam of the second TRP, the specified TCI state index among the multiple activated TCI state indices of the fourth MAC CE is directly identified as the initial beam of the second TRP. For example, a TCI state index is specified to the TCI state index with the smallest corresponding TCI state index value, or a fourth MAC CE provides a mapping relationship between the codepoint of the DCI's TCI instruction field and a combination of TCI states, where the TCI state combination includes one or two TCI states, and the specified TCI state index is one TCI state index within the TCI state combination corresponding to the specified DCI codepoint, for example, the specified DCI codepoint is the codepoint with the smallest possible value for the codepoint. Then, if it is necessary to indicate the refresh beam of the second TRP, another DCI is sent to indicate one of the TCI state indices of the fourth MAC CE corresponding to the refresh beam of the second TRP. By indicating the MAC CEs for both the initial beam and the refresh beam with a single MAC CE, MAC CE savings are achieved, reducing system costs.

[0189] In embodiments of this disclosure, in some scenarios, the first received beam corresponds to the first TRP and the second received beam corresponds to the initial beam of the second TRP, and in another scenario, the first received beam corresponds to the first TRP and the second received beam corresponds to the refresh beam of the second TRP. In these two scenarios, if the MAC CE indicates multiple activated TCI state indices, the DCI needs to indicate one TCI state index from the multiple activated TCI state indices, and that this one TCI state index corresponds to either the first TRP or the second TRP, thereby improving the efficiency and accuracy of the indication. Hereinafter, these embodiments will be specifically described in the following three implementations.

[0190] In the first embodiment, the first DCI and the second DCI include a target indicator field, where the target indicator field indicates the identifier of the TRP corresponding to the TCI state index and / or the corresponding control resource set pool index. That is, the target indicator field indicates which TRP and / or control resource set pool the TCI state index corresponds to. Here, each control resource set pool index and TRP have a correspondence, and once the control resource set pool index is determined, it is determined which TRP it corresponds to, for example, the first TRP or the second TRP.

[0191] In a second embodiment, in the first and second DCIs, each TCI state index corresponds to a pre-configured TRP identifier and / or a control resource set pool index. That is, different TCI state indexes have the same TRP identifier, i.e., different TRP identifiers result in different corresponding TCI state indexes. For example, if the TCI state indexes corresponding to the first TRP are 1 and 2, then the TCI state indexes corresponding to the second TRP are 3 and 4. This allows determining which TRP corresponds to which TRP by having the TCI state index correspond to a pre-configured TRP identifier, for example, the first TRP or the second TRP. Alternatively, different TCI state indexes have the same control resource set pool index, and determining which TRP corresponds to which TRP by having the TCI state index correspond to a pre-configured control resource set pool index, for example, the first TRP or the second TRP. Here, each control resource set pool index and TRP have a corresponding relationship. Once a control resource set pool index is determined, it is determined which TRP it corresponds to, for example, the first TRP or the second TRP.

[0192] In a third implementation, the TRP identifier and / or the corresponding control resource set pool index corresponding to the TCI status index in the first DCI and the second DCI is the TRP identifier and / or control resource set pool index indicated by the MAC CE that activates the TCI status index.

[0193] To illustrate with an example of the first DCI, in one implementation, the TRP identifier corresponding to the TCI state index in the first DCI is the TRP identifier indicated by the MAC CE that activates the TCI state index; that is, the MAC CE indicates the TRP identifier. In one implementation, the MAC CE format has different bit position settings for TCI state indices that activate different TRPs, and based on the bit position, it is possible to determine which TRP the activated TCI state index belongs to. In a second embodiment, the control resource set pool index corresponding to the TCI state index in the first DCI is the control resource set pool index indicated by the MAC CE that activates the TCI state index. In a third implementation, the MAC CE format includes a CORESET ID, and each CORESET ID corresponds to a unique control resource set pool index, so the TRP corresponding to this TCI state index can be determined based on the CORESET ID. In a fourth embodiment, different bit values ​​can also be set to indicate whether or not to activate the TCI state index of each TRP, and to indicate which TRP's TCI state index has been activated.

[0194] In embodiments of the present disclosure, a first transmit beam is used to transmit first instruction information to a terminal device, where the first transmit beam corresponds to a first receive beam, i.e., the terminal device receives the first instruction information using the first receive beam. Regarding the method for determining the first receive beam used by the terminal device, in one implementation of embodiments of the present disclosure, the first receive beam is an initial receive beam corresponding to a control resource set CORESET#0 associated with a first TRP. Here, the initial receive beam is the beam used for the first time by the terminal device to perform uplink and downlink transmission with the first TRP. The initial receive beam corresponding to CORESET#0 associated with the first TRP can be determined by the terminal device based on the detected RSRP value of a synchronization signal block SSB transmitted from a network device. When the terminal device detects that the RSRP value exceeds a threshold, it initiates random access using the PRACH resource corresponding to this SSB, i.e., the receive beam corresponding to this SSB is set as the initial receive beam of CORESET#0, thereby determining the first receive beam.

[0195] Figure 4 is a schematic flowchart of another beam directing method provided by an embodiment of the present disclosure, which is applied to network equipment and illustrates another method for directing a first received beam of terminal equipment, and as shown in Figure 4, this method includes the following steps 401-402.

[0196] In step 401, a second instruction is transmitted to the terminal device using a transmit beam corresponding to a known receive beam of the terminal device.

[0197] Here, the second instruction information indicates the first received beam of the terminal device, and the known received beam corresponds to the first TRP.

[0198] In embodiments of this disclosure, the known received beam is the received beam already used by the terminal device when the first TRP transmits a downlink transmission to the terminal device. In one implementation, the known received beam corresponds to CORESET#0 associated with the first TRP, i.e., the known received beam is the beam corresponding to CORESET#0 determined when the terminal device detects the RSRP value of the synchronization signal block SSB transmitted from the network device and the RSRP value is greater than a threshold. In another implementation, the known received beam corresponds to a third control resource set associated with the first TRP and is indicated by third instruction information transmitted by CORESET#0 associated with the first TRP.

[0199] In step 402, the first transmission beam is used to transmit the first instruction information to the terminal device.

[0200] Here, step 402 can refer to the description of any of the embodiments described above, as the principle is the same, and the description is omitted here.

[0201] In the beam direction method of this embodiment, the network device uses a first transmit beam to send first direction information to the terminal device to determine a second receive beam to be used by the terminal device during subsequent communication between the terminal device and the network device. Here, the first receive beam corresponds to a first or second TRP, and the second receive beam corresponds to a second TRP. As a result, when the network device uses the second TRP to transmit a signaling signal that directs the beam, the terminal device receives it using the second receive beam, completing the direction of the terminal device's receive beam and improving the success rate of signaling reception.

[0202] In correspondence with the beam pointing methods provided by some of the embodiments described above, the present disclosure further provides beam pointing devices, and since the beam pointing devices provided by the embodiments of the present disclosure correspond to the methods provided by some of the embodiments described above, embodiments of beam pointing methods also apply to beam pointing devices provided by these embodiments, and such embodiments are omitted in this embodiment.

[0203] Figure 5 is a schematic diagram of a beam directing device 110 provided by an embodiment of the present disclosure. The device is applied to terminal equipment.

[0204] As shown in Figure 5, this beam pointing device 110 includes a receiving module 51.

[0205] The receiving module 51 uses a first receiving beam to receive first instruction information transmitted from a network device, the first instruction information instructs a second receiving beam, where the first receiving beam corresponds to a first or second transmission / reception point (TRP), and the second receiving beam corresponds to a second TRP.

[0206] Furthermore, in one possible implementation, the first receiving beam corresponds to the first TRP, and the second receiving beam corresponds to the initial beam of the second TRP.

[0207] One possible implementation is that the first instruction information is a control element (MAC CE) of the first media access control layer, where the first MAC CE indicates an identifier of a first control resource set associated with the second TRP and a transmission setting instruction (TCI) state index corresponding to the initial beam of the second TRP, and the initial beam of the second TRP corresponds to the first control resource set.

[0208] One possible implementation is that the first instruction information is a second MAC CE and first downlink control information (DCI), where the second MAC CE indicates a plurality of activated TCI state indices, the first DCI indicates one TCI state index corresponding to the initial beam of the second TRP, and the one TCI state index is one of the plurality of activated TCI state indices included in the second MAC CE.

[0209] One possible implementation is that the first receiving beam corresponds to the first TRP and the second receiving beam corresponds to the refresh beam of the second TRP, or the first receiving beam corresponds to the second TRP and the second receiving beam corresponds to the refresh beam of the second TRP.

[0210] One possible implementation is that the first instruction information is a third MAC CE, where the third MAC CE indicates an identifier for a second control resource set associated with the second TRP and a TCI state index corresponding to the refresh beam of the second TRP, and the refresh beam of the second TRP corresponds to the second control resource set.

[0211] One possible implementation is that the first instruction information is a fourth MAC CE and a second DCI, where the fourth MAC CE indicates a plurality of activated TCI state indices, the second DCI indicates a single TCI state index corresponding to the refresh beam of the second TRP, and the single TCI state index is one of the plurality of activated TCI state indices contained in the fourth MAC CE.

[0212] One possible implementation is that the multiple activated TCI state indices carried to the fourth MAC CE include one TCI state index corresponding to the initial beam of the second TRP.

[0213] One possible implementation is that the first DCI and the second DCI include a target indicator field for indicating the TRP identifier and / or the corresponding control resource set pool index corresponding to the TCI state index.

[0214] One possible implementation is that in the first DCI and the second DCI, each TCI state index corresponds to a pre-configured TRP identifier and / or to a control resource set pool index.

[0215] In one possible implementation, the TRP identifier and / or the corresponding control resource set pool index corresponding to the TCI state index in the first DCI and the second DCI is the TRP identifier and / or control resource set pool index indicated by the MAC CE that activates the TCI state index.

[0216] In one possible implementation, the apparatus further includes a determination module for determining the first received beam, where the first received beam is the initial received beam of the control resource set CORESET#0 associated with the first TRP.

[0217] In one possible implementation, the receiving module 51 further receives second instruction information using a known receiving beam corresponding to the first TRP, and the second instruction information is for determining the first receiving beam.

[0218] One possible implementation is that a known received beam corresponds to a CORESET#0 associated with the first TRP, or the known received beam corresponds to a third control resource set associated with the first TRP and is indicated by a third instruction information transmitted by the CORESET#0 associated with the first TRP.

[0219] One possible implementation is that at least one of the first MAC CE, the second MAC CE, the third MAC CE, and the fourth MAC CE includes one or more TCI state indexes corresponding to a TRP identifier, or one or more TCI state indexes corresponding to a control resource set pool index.

[0220] One possible implementation is that at least one of the first MAC CE, the second MAC CE, the third MAC CE, and the fourth MAC CE includes a plurality of TCI state indexes corresponding to identifiers of a plurality of TRPs, where each TCI state index has the identifier of the corresponding TRP, or a plurality of TCI state indexes corresponding to a plurality of control resource set pool indexes, where each TCI state index has the control resource set pool index.

[0221] One possible implementation is that at least one of the first MAC CE, the second MAC CE, the third MAC CE, and the fourth MAC CE includes an indicator field corresponding to at least one TCI state index, the indicator field indicating whether or not the at least one TCI state index exists in the at least one MAC CE.

[0222] In the apparatus of the embodiments of this disclosure, a terminal device uses a first receive beam to receive first instruction information and determines a second receive beam to be used when subsequent terminal devices communicate with network devices. Here, the first receive beam corresponds to a first or second TRP, meaning the first receive beam may be the receive beam used when receiving first instruction information transmitted from the first TRP, or the receive beam used when receiving first instruction information transmitted from the second TRP. Based on the first instruction information, a second receive beam corresponding to the second TRP is determined, and so when subsequent network devices receive instruction signaling transmitted using the second TRP, they use the second receive beam to receive it, completing the instruction on the receive beam and improving the success rate of signaling reception.

[0223] In correspondence with the beam pointing methods provided by some of the embodiments described above, the present disclosure further provides beam pointing devices, and since the beam pointing devices provided by the embodiments of the present disclosure correspond with the beam pointing methods provided by some of the embodiments described above, embodiments of the beam pointing methods also apply to the beam pointing devices provided by these embodiments, and are omitted from description in these embodiments.

[0224] Figure 6 is a schematic diagram of a beam pointing device 120 provided by an embodiment of the present disclosure. The device is applied to network equipment.

[0225] Here, the beam pointing device 120 includes a transmitting module 61.

[0226] The transmitting module 61 transmits first instruction information to a terminal device using a first transmitting beam, wherein the first instruction information instructs a second receiving beam of the terminal device, the first transmitting beam corresponds to the first receiving beam of the terminal device, the first receiving beam corresponds to a first or second TRP, and the second receiving beam corresponds to the second TRP.

[0227] Furthermore, in one possible implementation, the first receiving beam is the beam of the first TRP, and the second receiving beam is the initial beam of the second TRP.

[0228] One possible implementation is that the first instruction information is a control element (MAC CE) of the first media access control layer, where the first MAC CE indicates an identifier of a first control resource set associated with the second TRP and a transmission setting instruction (TCI) state index corresponding to the initial beam of the second TRP, and the initial beam of the second TRP corresponds to the first control resource set.

[0229] One possible implementation is that the first instruction information is a second MAC CE and first downlink control information (DCI), where the second MAC CE indicates a plurality of activated TCI state indices, the first DCI indicates one TCI state index corresponding to the initial beam of the second TRP, and the one TCI state index is one of the plurality of activated TCI state indices included in the second MAC CE.

[0230] One possible implementation is that the first receiving beam corresponds to the beam of the first TRP and the second receiving beam corresponds to the refresh beam of the second TRP, or the first receiving beam corresponds to the beam of the second TRP and the second receiving beam corresponds to the refresh beam of the second TRP.

[0231] One possible implementation is that the first instruction information is a third MAC CE, where the third MAC CE indicates an identifier for a second control resource set associated with the second TRP and a TCI state index corresponding to the refresh beam of the second TRP, and the refresh beam of the second TRP corresponds to the second control resource set.

[0232] One possible implementation is that the first instruction information is a fourth MAC CE and a second DCI, where the fourth MAC CE indicates a plurality of activated TCI state indices, the second DCI indicates a single TCI state index corresponding to the refresh beam of the second TRP, and the single TCI state index is one of the plurality of activated TCI state indices contained in the fourth MAC CE.

[0233] One possible implementation is that the multiple TCI state indices being transported to the fourth MAC CE include one TCI state index corresponding to the initial beam of the second TRP.

[0234] One possible implementation is that the first DCI and the second DCI include a target indicator field for indicating the TRP identifier and / or the corresponding control resource set pool index corresponding to the TCI state index.

[0235] One possible implementation is that in the first DCI and the second DCI, each TCI state index corresponds to a pre-configured TRP identifier and / or to a control resource set pool index.

[0236] In one possible implementation, the TRP identifier and / or the corresponding control resource set pool index corresponding to the TCI state index in the first DCI and the second DCI is the TRP identifier and / or control resource set pool index indicated by the MAC CE that activates the TCI state index.

[0237] In one possible implementation, the first received beam is the initial received beam corresponding to the control resource set CORESET#0 associated with the first TRP.

[0238] In one possible implementation, the transmitting module 61 further transmits second instruction information to the terminal device using a transmitting beam corresponding to a known receiving beam of the terminal device, wherein the second instruction information instructs the first receiving beam of the terminal device, and the known receiving beam corresponds to the first TRP.

[0239] One possible implementation is that the known received beam corresponds to CORESET#0 associated with the first TRP, or the known received beam corresponds to a third control resource set associated with the first TRP and is indicated by a third instruction information transmitted by CORESET#0 associated with the first TRP.

[0240] One possible implementation is that at least one of the first MAC CE, the second MAC CE, the third MAC CE, and the fourth MAC CE includes one or more TCI state indexes corresponding to a TRP identifier, or one or more TCI state indexes corresponding to a control resource set pool index.

[0241] One possible implementation is that at least one of the first MAC CE, the second MAC CE, the third MAC CE, and the fourth MAC CE includes a plurality of TCI state indexes corresponding to identifiers of a plurality of TRPs, where each TCI state index has the identifier of the corresponding TRP, or a plurality of TCI state indexes corresponding to a plurality of control resource set pool indexes, where each TCI state index has the control resource set pool index.

[0242] One possible implementation is that at least one of the first MAC CE, the second MAC CE, the third MAC CE, and the fourth MAC CE includes an indicator field corresponding to at least one TCI state index, the indicator field indicating whether or not the at least one TCI state index exists in the at least one MAC CE.

[0243] In embodiments of the present disclosure, a network device uses a first transmit beam to transmit first instruction information to a terminal device to determine a second receive beam to be used by the terminal device during subsequent communication between the terminal device and the network device. Here, the first receive beam corresponds to a first or second TRP, and the second receive beam corresponds to a second TRP, so that when the network device subsequently transmits instruction signaling using the second TRP, the terminal device uses the second receive beam to receive it and improve the success rate of signaling reception.

[0244] Figure 7 is a block diagram of a terminal device provided by an embodiment of the present disclosure. For example, the terminal device 600 may be a mobile phone, a computer, a digital broadcasting user device, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, and the like.

[0245] As shown in Figure 7, the terminal includes a transceiver 800, a processor 810, and memory 820.

[0246] Here, memory 820 stores a computer program, transceiver 800 transmits and receives data under the control of processor 810, processor 810 reads the computer program in memory 820 and performs an operation to receive first instruction information transmitted from network equipment using a first receive beam, the first instruction information instructs a second receive beam, where the first receive beam corresponds to a first or second TRP, and the second receive beam corresponds to the second TRP.

[0247] The transceiver 800 transmits and receives data under the control of the processor 810.

[0248] Here, in Figure 7, the bus architecture may include any number of interconnected buses and bridges to which various circuits of one or more processors represented by processor 810 and memory represented by memory 820 are linked. The bus architecture may also link various other circuits such as peripherals, voltage regulators, and power management circuits, all of which are well known to those skilled in the art and are therefore not described herein. The bus interface provides an interface. The transceiver 800 may be a plurality of elements including a transmitter and a receiver that provide a unit for communicating with various other devices on a transmission medium including a wireless channel, a wired channel, or an optical cable. For different user equipment, the user interface may be an interface to which necessary devices can be externally and internally connected, and the connected devices include, but are not limited to, a numeric keypad, a display, a speaker, a microphone, a joystick, etc.

[0249] The processor 810 manages the bus architecture and normal operations, and the memory 820 can store data used when the processor 810 performs operations.

[0250] Selectively, the processor 810 may be a Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), a Field-Programmable Gate Array (FPGA), or a Complex Programmable Logic Device (CPLD), and the processor 810 may employ a multi-core architecture.

[0251] The processor 810 executes any of the methods shown in Figures 1-2 provided by embodiments of this disclosure, in accordance with the obtained executable instructions, by calling a computer program stored in memory. The processor 810 and the memory 820 may be physically separated.

[0252] In one possible implementation, the first receiving beam corresponds to the first TRP, and the second receiving beam corresponds to the initial beam of the second TRP.

[0253] One possible implementation is that the first instruction information is a control element (MAC CE) of the first media access control layer, where the first MAC CE indicates an identifier of a first control resource set associated with the second TRP and a transmission setting instruction (TCI) state index corresponding to the initial beam of the second TRP, and the initial beam of the second TRP corresponds to the first control resource set.

[0254] One possible implementation is that the first instruction information is a second MAC CE and first downlink control information (DCI), where the second MAC CE indicates a plurality of activated TCI state indices, the first DCI indicates one TCI state index corresponding to the initial beam of the second TRP, and the one TCI state index is one of the plurality of activated TCI state indices included in the second MAC CE.

[0255] One possible implementation is that the first receiving beam corresponds to the first TRP and the second receiving beam corresponds to the refresh beam of the second TRP, or the first receiving beam corresponds to the second TRP and the second receiving beam corresponds to the refresh beam of the second TRP.

[0256] One possible implementation is that the first instruction information is a third MAC CE, where the third MAC CE indicates an identifier for a second control resource set associated with the second TRP and a TCI state index corresponding to the refresh beam of the second TRP, and the refresh beam of the second TRP corresponds to the second control resource set.

[0257] One possible implementation is that the first instruction information is a fourth MAC CE and a second DCI, where the fourth MAC CE indicates a plurality of activated TCI state indices, the second DCI indicates a single TCI state index corresponding to the refresh beam of the second TRP, and the single TCI state index is one of the plurality of activated TCI state indices contained in the fourth MAC CE.

[0258] One possible implementation is that the multiple activated TCI state indices carried to the fourth MAC CE include one TCI state index corresponding to the initial beam of the second TRP.

[0259] One possible implementation is that the first DCI and the second DCI include a target indicator field for indicating the TRP identifier and / or the corresponding control resource set pool index corresponding to the TCI state index.

[0260] One possible implementation is that in the first DCI and the second DCI, each TCI state index corresponds to a pre-configured TRP identifier and / or to a control resource set pool index.

[0261] In one possible implementation, the TRP identifier and / or the corresponding control resource set pool index corresponding to the TCI state index in the first DCI and the second DCI is the TRP identifier and / or control resource set pool index indicated by the MAC CE that activates the TCI state index.

[0262] In one possible implementation, the processor further performs an operation to determine the first received beam, where the first received beam is the initial received beam of the control resource set CORESET#0 associated with the first TRP.

[0263] In one possible implementation, the processor further performs an operation to receive second instruction information using a known received beam corresponding to the first TRP, the second instruction information being for determining the first received beam.

[0264] One possible implementation is that the known received beam corresponds to CORESET#0 associated with the first TRP, or the known received beam corresponds to a third control resource set associated with the first TRP and is indicated by a third instruction information transmitted by CORESET#0 associated with the first TRP.

[0265] One possible implementation is that at least one of the first MAC CE, the second MAC CE, the third MAC CE, and the fourth MAC CE includes one or more TCI state indexes corresponding to a TRP identifier, or one or more TCI state indexes corresponding to a control resource set pool index.

[0266] One possible implementation is that at least one of the first MAC CE, the second MAC CE, the third MAC CE, and the fourth MAC CE includes a plurality of TCI state indexes corresponding to identifiers of a plurality of TRPs, where each TCI state index has the identifier of the corresponding TRP, or a plurality of TCI state indexes corresponding to a plurality of control resource set pool indexes, where each TCI state index has the control resource set pool index.

[0267] One possible implementation is that at least one of the first MAC CE, the second MAC CE, the third MAC CE, and the fourth MAC CE includes an indicator field corresponding to at least one TCI state index, the indicator field indicating whether or not the at least one TCI state index exists in the at least one MAC CE.

[0268] Furthermore, the terminal equipment provided by the embodiment of the present invention can implement all the steps of the method realized in the embodiment of the method shown in Figures 1 and 2, and can achieve the same technical effects. Therefore, the same parts and beneficial effects as those of the embodiment of the method in this embodiment will not be specifically described here.

[0269] As shown in Figure 8, this is a schematic diagram of the network equipment provided by an embodiment of the present disclosure. As shown in Figure 8, the network equipment includes a transceiver 900, a processor 910, and memory 920.

[0270] Here, the memory 920 stores a computer program, the transceiver 900 transmits and receives data under the control of the processor 910, the processor 910 reads the computer program in the memory 920 and performs an operation to transmit first instruction information to a terminal device using a first transmit beam, where the first instruction information instructs a second receive beam of the terminal device, the first transmit beam corresponds to a first receive beam of the terminal device, the first receive beam corresponds to a first transmit / receive point (TRP) or a second TRP, and the second receive beam corresponds to the second TRP.

[0271] The transceiver 900 transmits and receives data under the control of the processor 910.

[0272] Here, in Figure 8, the bus architecture may include any number of interconnected buses and bridges to which various circuits of one or more processors represented by processor 910 and memory represented by memory 920 are linked. The bus architecture may also link various other circuits such as peripherals, voltage regulators, and power management circuits, all of which are well known to those skilled in the art and are therefore not described herein. The bus interface provides an interface. The transceiver 900 may be a plurality of elements including a transmitter and receiver that provide a unit for communicating with various other devices on a transmission medium including a wireless channel, a wired channel, or an optical cable. Processor 910 manages the bus architecture and normal operations, and memory 920 can store data used when processor 910 performs operations.

[0273] The processor 910 may be a CPU, ASIC, FPGA, or CPLD, and the processor 910 may employ a multi-core architecture.

[0274] In one possible implementation, the first receiving beam corresponds to the first TRP, and the second receiving beam corresponds to the initial beam of the second TRP.

[0275] One possible implementation is that the first instruction information is a control element (MAC CE) of the first media access control layer, where the first MAC CE indicates an identifier of a first control resource set associated with the second TRP and a transmission setting instruction (TCI) state index corresponding to the initial beam of the second TRP, and the initial beam of the second TRP corresponds to the first control resource set.

[0276] One possible implementation is that the first instruction information is a second MAC CE and first downlink control information (DCI), where the second MAC CE indicates a plurality of activated TCI state indices, the first DCI indicates one TCI state index corresponding to the initial beam of the second TRP, and the one TCI state index is one of the plurality of activated TCI state indices included in the second MAC CE.

[0277] One possible implementation is that the first receiving beam corresponds to the first TRP and the second receiving beam corresponds to the refresh beam of the second TRP, or the first receiving beam corresponds to the second TRP and the second receiving beam corresponds to the refresh beam of the second TRP.

[0278] One possible implementation is that the first instruction information is a third MAC CE, where the third MAC CE indicates an identifier for a second control resource set associated with the second TRP and a TCI state index corresponding to the refresh beam of the second TRP, and the refresh beam of the second TRP corresponds to the second control resource set.

[0279] One possible implementation is that the first instruction information is a fourth MAC CE and a second DCI, where the fourth MAC CE indicates a plurality of activated TCI state indices, the second DCI indicates a single TCI state index corresponding to the refresh beam of the second TRP, and the single TCI state index is one of the plurality of activated TCI state indices contained in the fourth MAC CE.

[0280] One possible implementation is that the multiple TCI state indices being transported to the fourth MAC CE include one TCI state index corresponding to the initial beam of the second TRP.

[0281] One possible implementation is that the first DCI and the second DCI include a target indicator field for indicating the TRP identifier and / or the corresponding control resource set pool index corresponding to the TCI state index.

[0282] One possible implementation is that in the first DCI and the second DCI, each TCI state index corresponds to a pre-configured TRP identifier and / or to a control resource set pool index.

[0283] In one possible implementation, the TRP identifier and / or the corresponding control resource set pool index corresponding to the TCI state index in the first DCI and the second DCI is the TRP identifier and / or control resource set pool index indicated by the MAC CE that activates the TCI state index.

[0284] In one possible implementation, the first received beam is the initial received beam corresponding to the control resource set CORESET#0 associated with the first TRP.

[0285] In one possible implementation, the processor further performs an operation to transmit second instruction information to the terminal device using a transmit beam corresponding to a known receive beam of the terminal device, wherein the second instruction information instructs the first receive beam of the terminal device, and the known receive beam corresponds to the first TRP.

[0286] One possible implementation is that the known received beam corresponds to CORESET#0 associated with the first TRP, or the known received beam corresponds to a third control resource set associated with the first TRP and is indicated by a third instruction information transmitted by CORESET#0 associated with the first TRP.

[0287] One possible implementation is that at least one of the first MAC CE, the second MAC CE, the third MAC CE, and the fourth MAC CE includes one or more TCI state indexes corresponding to a TRP identifier, or one or more TCI state indexes corresponding to a control resource set pool index.

[0288] One possible implementation is that at least one of the first MAC CE, the second MAC CE, the third MAC CE, and the fourth MAC CE includes a plurality of TCI state indexes corresponding to identifiers of a plurality of TRPs, where each TCI state index has the identifier of the corresponding TRP, or a plurality of TCI state indexes corresponding to a plurality of control resource set pool indexes, where each TCI state index has the control resource set pool index.

[0289] As a possible implementation form, at least one of the first MAC CE, the second MAC CE, the third MAC CE, and the fourth MAC CE includes an indication field corresponding to at least one TCI state index, and the indication field indicates whether the at least one TCI state index exists in the at least one MAC CE.

[0290] Note that the above network device provided by the embodiments of the present invention can implement all the method steps of the methods implemented in the embodiments of FIGS. 3 to 4 above, and can achieve the same technical effects. Here, the same parts and beneficial effects of the method embodiments of this embodiment will not be specifically described.

[0291] To implement the above embodiments, the present disclosure further proposes a communication system.

[0292] The communication system provided by the embodiments of the present disclosure includes a terminal device and a network device. The terminal device can implement the beam indication method described in any one of 1 to 2 above, and the network device can implement the beam indication method described in any one of 3 to 4 above.

[0293] To implement the above embodiments, the present disclosure further proposes a computer storage medium.

[0294] The computer storage medium provided by the embodiments of the present disclosure stores an executable program. When the executable program is executed by a processor, the above methods such as at least one of FIGS. 1 to 4 can be implemented.

[0295] To implement the above embodiments, the present disclosure further proposes a computer program product.

[0296] In the computer program products provided by embodiments of this disclosure, when an executable program is executed by a processor, the above method as shown in at least one of Figures 1 to 4 can be realized.

[0297] A person skilled in the art will readily conceive of other embodiments of this disclosure after reviewing the specification and practicing the inventions disclosed herein. This disclosure is intended to cover any variations, uses, or adaptive changes of the invention, which include common or commonly used technical means in the art not disclosed herein, in accordance with the general principles of the invention. The specification and examples are to be considered merely illustrative, and the true scope and spirit of this disclosure are indicated by the following claims.

[0298] This disclosure is not limited to the exact structure described above and shown in the drawings, and various modifications and changes may be made as long as they do not deviate from its scope. The scope of this disclosure is limited only to the attached claims.

Claims

1. A beam direction method, which is performed by terminal equipment, A step of receiving first instruction information transmitted from a network device using a first receive beam, wherein the first instruction information indicates a second receive beam. The first receiving beam corresponds to the first transmission / reception point (TRP), and the second receiving beam corresponds to the refresh beam of the second TRP. The second receiving beam is used for transmitting at least two of the following: the physical downlink control channel (PDCCH), the physical downlink shared channel (PDSCH), and the reference signal. The first instruction information consists of the control element (MAC CE) of the media access control layer and the downlink control information (DCI), The MAC CE indicates a plurality of activated Transmission Configuration Instruction (TCI) status indices, The DCI indicates a TCI state index corresponding to the refresh beam of the second TRP, and the TCI state index is one of a plurality of activated TCI state indices included in the MAC CE. The TRP identifier and / or the corresponding control resource set pool index in the DCI corresponding to the TCI status index is the TRP identifier and / or control resource set pool index indicated by the MAC CE that activates the TCI status index. A beam direction method characterized by the following:

2. A beam direction method, which is performed by network equipment, The process includes the step of transmitting first instruction information to a terminal device using a first transmit beam, The first instruction information indicates the second receiving beam of the terminal device, and the first transmitting beam corresponds to the first receiving beam of the terminal device. The first receiving beam corresponds to the first transmission / reception point (TRP), and the second receiving beam corresponds to the refresh beam of the second TRP. The second receiving beam is used for transmitting at least two of the following: the physical downlink control channel (PDCCH), the physical downlink shared channel (PDSCH), and the reference signal. The first instruction information consists of the control element (MAC CE) of the media access control layer and the downlink control information (DCI), The MAC CE indicates a plurality of activated Transmission Configuration Instruction (TCI) status indices, The DCI indicates a TCI state index corresponding to the refresh beam of the second TRP, and the TCI state index is one of a plurality of activated TCI state indices included in the MAC CE. The TRP identifier and / or the corresponding control resource set pool index in the DCI corresponding to the TCI status index is the TRP identifier and / or control resource set pool index indicated by the MAC CE that activates the TCI status index. A beam direction method characterized by the following:

3. Terminal equipment, including a transceiver, memory and processor, The memory stores a computer program, the transceiver transmits and receives data under the control of the processor, and the processor reads the computer program in the memory to realize the method according to claim 1. A terminal device characterized by the following features.

4. Network equipment, including transceivers, memory, and processor, The memory stores a computer program, the transceiver transmits and receives data under the control of the processor, and the processor reads the computer program in the memory to implement the method according to claim 2. Network equipment characterized by the following features.

5. A computer storage medium that stores computer-executable instructions, When the computer-executable instruction is executed by the processor, the method according to claim 1 is realized. A computer storage medium characterized by the following features.

6. A computer storage medium that stores computer-executable instructions, When the computer-executable instruction is executed by the processor, the method according to claim 2 is realized. A computer storage medium characterized by the following features.

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