Beam indication method and apparatus, device, and medium

Abstract

Embodiments of the present invention disclose a beam indication method and apparatus, a device, and a medium. The method includes: receiving (S101) beam indication information transmitted by a network-side device, where the beam indication information is used to indicate a plurality of pieces of beam information of a channel or a reference signal, and the plurality of pieces of beam information correspond to different transmission and reception point TRP identification information; and transmitting (S102) the channel or the reference signal according to the beam indication information. (Fig. 1)

Description

Beam pointing methods, devices, equipment and media

[0001] Cross-reference to related applications

[0002] This application claims priority to Chinese Patent Application No. 202010082875.6, filed in China on February 7, 2020, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This invention relates to the field of mobile communication technology, and in particular to a beam pointing method, apparatus, device and medium. Background Technology

[0004] Analog beamforming is transmitted across the full bandwidth, and each polarization element on the panel of each high-frequency antenna array can only transmit an analog beam in a time-division multiplexed manner. The beamforming weights of the analog beam are achieved by adjusting the parameters of devices such as the RF front-end phase shifter.

[0005] Currently, the training of simulated beamforming vectors is usually carried out using a polling method. That is, each element of each antenna panel in each polarization direction sends training signals (i.e., candidate beamforming vectors) sequentially at a predetermined time in a time-division multiplexing manner. After measurement, the terminal equipment feeds back a beam report, which is used by the network-side equipment to implement simulated beam transmission in the next transmission service.

[0006] After beam measurement and beam reporting, network-side equipment can perform beam indication on downlink and uplink channels or reference signals to establish beam links between network-side equipment and terminal equipment, thereby enabling the transmission of channels or reference signals.

[0007] Currently, there are beamforming schemes for single-transmitting-receiving-point (TRP) scenarios, but no beamforming schemes for multi-TRP scenarios. If a single-TRP beamforming scheme is used for a multi-TRP scenario, errors will occur in the transmission of the channel or reference signal.

[0008] Summary of the Invention

[0009] This invention provides a beam indication method, apparatus, device, and medium that can perform beam indication for multi-TRP scenarios and ensure the correct transmission of channels or reference signals in multi-TRP scenarios.

[0010] In a first aspect, embodiments of the present invention provide a beam indication method, comprising:

[0011] Receive beam indication information sent by network-side equipment. The beam indication information is used to indicate multiple beam information of the channel or reference signal. Multiple beam information corresponds to different TRP identification information.

[0012] Based on beam indication information, the transmission channel or reference signal is used.

[0013] Secondly, embodiments of the present invention provide a beam indication method, comprising:

[0014] Beam indication information is sent to the terminal device so that the terminal device can transmit the channel or reference signal according to the beam indication information. The beam indication information is used to indicate multiple beam information of the channel or reference signal, and the multiple beam information corresponds to different TRP identification information.

[0015] Thirdly, embodiments of the present invention provide a beam pointing device, comprising:

[0016] The receiving module is used to receive beam indication information sent by the network-side device; the beam indication information is used to indicate multiple beam information of the channel or reference signal, and the multiple beam information corresponds to different TRP identification information;

[0017] The transmission module is used to transmit channel or reference signals according to beam indication information.

[0018] Fourthly, embodiments of the present invention provide a beam pointing device, comprising:

[0019] The transmitting module is used to send beam indication information to the terminal device so that the terminal device can transmit the channel or reference signal according to the beam indication information; wherein, the beam indication information is used to indicate multiple beam information of the channel or reference signal, and the multiple beam information corresponds to different TRP identification information.

[0020] Fifthly, embodiments of the present invention provide a terminal device, including: a memory, a processor, and a computer program stored in the memory and executable on the processor;

[0021] When a processor executes a computer program, it implements the beam indication method provided in the first aspect of the embodiments of the present invention.

[0022] In a sixth aspect, embodiments of the present invention provide a network-side device, including: a memory, a processor, and a computer program stored in the memory and executable on the processor;

[0023] When the processor executes a computer program, it implements the beam indication method provided in the second aspect of the embodiments of the present invention.

[0024] In a seventh aspect, embodiments of the present invention provide a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the beam indication method provided in the first or second aspect of embodiments of the present invention.

[0025] The beam indication method, apparatus, device, and medium of this invention can indicate beams in multi-TRP scenarios by using multiple beam information corresponding to different TRP identification information of the indicating channel or reference signal, and can ensure the correct transmission of the channel or reference signal in the multi-TRP scenario. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments of the present invention will be briefly introduced below. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 is a flowchart illustrating a beam indication method applied to a terminal device according to an embodiment of the present invention;

[0028] Figure 2 is a structural schematic diagram of a beam indicator device applied to a terminal device according to an embodiment of the present invention;

[0029] Figure 3 is a schematic diagram of the hardware structure of a terminal device provided in an embodiment of the present invention;

[0030] Figure 4 is a schematic diagram of the hardware structure of a network-side device provided in an embodiment of the present invention. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] In some embodiments of the present invention, after beam measurement and beam reporting, the network-side device can perform beam indication on the downlink and uplink channels or reference signals to establish a beam link between the network-side device and the terminal device, thereby enabling the transmission of the channels or reference signals.

[0033] For beam indication of the Physical downlink control channel (PDCCH), network-side equipment uses Radio Resource Control (RRC) signaling to configure K Transmission Configuration Indication (TCI) state information for each control resource set (CORESET). When K > 1, one TCI state information is indicated or activated by the Media Access Control (MAC) control element (CE); when K = 1, no additional MAC CE command is required. When listening to the PDCCH, the terminal equipment uses the same quasi-colocation (QCL) information, i.e., the same TCI state information, for the entire search space within the CORESET. The reference signal (RS) in this TCI status information (e.g., periodic channel status information reference signal (CSI-RS) resource, semi-persistent CSI-RS resource, synchronization signal block, etc.) shares spatial QCL with the terminal device's specific PDCCH demodulation reference signal (DMRS) port. Based on this TCI status information, the terminal device can determine which receive beam to use to receive the PDCCH.

[0034] For beam indication of the Physical Downlink Shared Channel (PDSCH), the network-side equipment configures M TCI state information via RRC signaling, activates 2N TCI state information using the MAC CE command, and then notifies the TCI state information through the N-bit TCI field of the DCI. The reference signal in this TCI state information is QCL with the DMRS port of the PDSCH to be scheduled. The terminal equipment can then determine which receive beam to use to receive the PDSCH based on this TCI state information.

[0035] For CSI-RS beam indication, when the CSI-RS type is periodic CSI-RS, the network-side device configures QCL information for the CSI-RS resource via RRC signaling. When the CSI-RS type is semi-persistent CSI-RS, the network-side device indicates its QCL information when activating a CSI-RS resource from the RRC-configured CSI-RS resource set via MAC CE command. When the CSI-RS type is aperiodic CSI-RS, the network-side device configures the QCL for the CSI-RS resource via RRC signaling and uses downlink control information (DCI) to trigger the CSI-RS.

[0036] For beam indication of the Physical uplink control channel (PUCCH), network-side devices use RRC signaling to configure spatial relation information for each PUCCH resource via the parameter PUCCH-SpatialRelationInfo. When multiple spatial relation information items are configured for a PUCCH resource, MACCE is used to indicate or activate one of them. When only one spatial relation information item is configured for a PUCCH resource, no additional MACCE command is required.

[0037] For beam indication of the Physical uplink shared channel (PUSCH), the spatial relation information of PUSCH is determined by each SRI code point in the Sounding Reference Signal resource indicator (SRI) field of the DCI carried by the PDCCH when scheduling PUSCH. This SRI is used to indicate the spatial relation information of PUSCH.

[0038] For beam indication of the Sounding Reference Signal (SRS), when the SRS type is periodic SRS, the network-side device configures spatial relation information for the SRS resource via RRC signaling. When the SRS type is semi-persistent SRS, the network-side device activates one of the spatial relation information configured in the RRC via the MAC CE command. When the SRS type is aperiodic SRS, the network-side device configures spatial relation information for the SRS resource via RRC signaling.

[0039] For multi-TRP scenarios, based on the way control information is sent, it can be divided into single DCI and multi-DCI. The former sends DCI from one TRP to schedule data transmission on multiple TRPs, while the latter allows DCI to be sent from multiple TRPs to schedule data transmission on their respective TRPs.

[0040] When DCI schedules PDSCH, if the scheduling offset (or time offset) between DCI and PDSCH is less than or equal to a preset threshold, the default beam needs to be used to transmit PDSCH.

[0041] For multi-DCI based multi-TRP transmission, if a control resource set pool index (CORESETPoolIndex) is configured, when the above scheduling interval is less than or equal to a preset threshold, the terminal device assumes that the RS in the QCL information of the PDSCH DMRS ports is QCL with the control resource set (CORESET with lowest index) that has the same CORESETPoolIndex value.

[0042] The aforementioned "CORESET with lowest index" refers to the CORESET with the lowest index among the CORESETs that the terminal device needs to listen to, corresponding to their respective CORESETPoolIndex values, in the latest slot. Here, "latest slot" refers to a slot within the serving cell's active bandwidth part (BWP) that contains at least one CORESET associated with the corresponding CORESETPoolIndex.

[0043] If the terminal device does not support this feature, then regardless of how CORESETPoolIndex is configured, CORESET with lowest index is the CORESET with lowest index in the CORESET that the terminal device needs to listen to in the latest slot, and it is unrelated to CORESETPoolIndex.

[0044] For single-DCI based Multi-TRP transmission, when the above scheduling interval is less than or equal to a preset threshold, and after receiving an activation command for the specific PDSCH TCI state information of the terminal device, the terminal device assumes that the PDSCH DMRS ports use the QCL parameters of the default TCI state information.

[0045] That is, in the TCI state used for PDSCH activation, the TCI state information corresponding to the lowest code point is selected from the TCI code points containing two different TCI state information.

[0046] Among them, the spatial relation information, TCI state information, QCL information, and QCL parameters mentioned above represent beam information.

[0047] Downlink beam information is typically represented using TCI state information and QCL information. Uplink beam information is typically represented using spatial relation information.

[0048] Currently, there is no conclusion on how to perform beam indication when transmitting channels or reference signals in a multi-TRP scenario. If beam indication as in a single-TRP scenario is still used, it will be impossible to determine which TRP the indicated beam information is for, leading to incorrect transmission.

[0049] Based on this, some embodiments of the present invention provide a beam indication method for multi-TRP scenarios.

[0050] Specifically, in multi-TRP scenarios, the following beam indication method is used for each channel or reference signal:

[0051] The network-side device sends beam indication information to the terminal device. This beam indication information is used to indicate multiple beam information of the channel or reference channel, and the multiple beam information corresponds to different TRP identification information. The terminal device transmits the channel or reference channel according to the beam indication information.

[0052] Through the embodiments of the present invention, multiple beam information corresponding to different TRP identification information can be indicated, and beam indication can be performed for multi-TRP scenarios, which can ensure the correct transmission of channels or reference signals in multi-TRP scenarios.

[0053] In some possible implementations of this invention, the beam information may further include: TRP identification information; wherein, the TRP identification information may be CORESETPoolIndex.

[0054] For PDCCH, RRC configures a TCI state pool, or a set of candidate TCI states. The TCI state pool can be used to represent all TRP identification information, or a separate TCI state pool can be configured for each TRP identification information. If TRP identification information belongs to different cells, each TRP identification information can correspond to a TCI state pool configured by the network for its respective cell. MAC CE activates the TCI state information of PDCCH.

[0055] When a PDCCH is sent sequentially or simultaneously by multiple TRPs, the TCI state identifier (ID) configured in RRC or activated by MAC CE corresponds to multiple QCL RSs (such as QCL-TypeD RSs), which are used to determine the QCL information of the PDCCH corresponding to different TRP identifiers. Alternatively, MAC CE can be used to activate multiple TCI state information for the PDCCH, each used to determine the QCL information of the PDCCH corresponding to different TRP identifiers. That is, TCI state information including multiple QCL RSs is activated from the TCI state pool, or multiple TCI state information is activated from the TCI state pool. Multiple QCL RSs correspond to different TRP identifiers; multiple TCI state information correspond to different TRP identifiers.

[0056] Among them, there is a correspondence between the multiple QCL RS and different TRP identification information, and there is a correspondence between the multiple TCI state information and different TRP identification information. The correspondence between the multiple QCL RS or multiple TCI state information and different TRP identification information can be determined according to preset rules, such as the order of indexing.

[0057] When the MAC CE activates the TCI state information of the PDCCH on a BWP of a component carrier (CC), the TCI state information is applied to the first PDCCH. The CORESET where the first PDCCH is located is a CORESET with the same CORESET identifier as the CC in the CC list where the CC is located and with the same TRP identifier information as the CORESET where the PDCCH is located; or, the CORESET where the first PDCCH is located is a CORESET with the same TRP identifier information as the CC in the CC list where the CC is located.

[0058] When the MAC CE activates the TCI state information of the second PDCCH corresponding to a certain TRP identifier, the TCI state information is applied to all PDCCHs corresponding to that certain TRP identifier.

[0059] The second PDCCH can be a PDCCH on any control resource set corresponding to a certain TRP identifier, or a PDCCH on a control resource set with a preset control resource set identifier corresponding to a certain TRP identifier.

[0060] Through the embodiments of the present invention, multiple TCI state information corresponding to different TRP identification information can be indicated, beam indication can be performed on multi-TRP scenarios, and the correct transmission of PDCCH in multi-TRP scenarios can be guaranteed.

[0061] For PDSCH, when the DCI for scheduling PDSCH does not contain a TCI field,

[0062] For single-DCI mode, PDSCH uses the TCI state information of the PDCCH where the DCI is scheduled; alternatively, PDSCH uses the multiple TCI state information corresponding to the lowest code point in the TCI field that has multiple TCI state information. These multiple TCI state information are used to determine the QCL information of multiple TRPs corresponding to the PDSCH, meaning that each of the multiple TCI state information corresponds to a different TRP identifier.

[0063] In multi-DCI mode, PDSCH uses the TCI state information of the PDCCH where the scheduling DCI is located. For example, if PDCCH1 of TRP1 schedules PDSCH1, then PDSCH1 uses the TCI state information of PDCCH1.

[0064] When a MAC CE activates a set of TCI state information for a PDSCH on a certain BWP of a certain CC, the set of TCI state information is applied to all PDSCHs in the CC list of that CC that have the same TRP identification information as that PDSCH.

[0065] Among them, TRP identification information can be explicitly added to the MAC CE that activates a set of TCI state information.

[0066] When PDCCH schedules PDSCH across carriers, and the scheduling offset is less than or equal to a preset threshold, the TCI state information of the scheduled PDSCH can be determined based on the TCI state information with the smallest ID in a set of TCI state information that corresponds to the preset TRP identifier information and is active for PDSCH on the network side.

[0067] The preset TRP identifier information can be the TRP identifier information corresponding to the scheduled PDSCH, the TRP identifier information corresponding to the PDCCH, the TRP identifier information with a preset value, or the TRP identifier information corresponding to the TCI state information indicated by the DCI of the PDCCH, etc.

[0068] Through the embodiments of the present invention, multiple TCI state information corresponding to different TRP identification information can be indicated, beam indication can be performed on multi-TRP scenarios, and the correct transmission of PDSCH in multi-TRP scenarios can be guaranteed.

[0069] For PUCCH, the network uses RRC signaling to configure a spatial relationship information pool. This spatial relationship information pool can be used to correspond to all TRP identification information, or a separate spatial relationship information pool can be configured for each TRP identification information. If TRP identification information belongs to different cells, each TRP identification information can correspond to the spatial relationship information pool configured in its respective cell. MAC CE activates the spatial relationship information of PUCCH.

[0070] When a PUCCH is transmitted sequentially or simultaneously by multiple TRPs, the spatial relationship information configured by RRC or activated by MAC CE includes multiple source reference signals, each used to determine the PUCCH corresponding to a different TRP identifier; or, MAC CE is used to activate multiple spatial relationship information for this PUCCH, each used to determine the PUCCH corresponding to a different TRP identifier. That is, spatial relationship information including multiple source reference signals is activated from the spatial relationship information pool, or multiple spatial relationship information is activated from the spatial relationship information pool. The multiple source reference signals correspond to different TRP identifiers; the multiple spatial relationship information correspond to different TRP identifiers.

[0071] Among them, there is a correspondence between the multiple source reference signals and different TRP identification information, and there is a correspondence between the multiple spatial relationship information and different TRP identification information. The correspondence between the multiple source reference signals or multiple spatial relationship information and different TRP identification information can be determined according to preset rules, such as the order of indexing.

[0072] When the MAC CE activates the spatial relationship information of a PUCCH on a BWP of a component carrier (CC), the spatial relationship information is applied to all PUCCHs in the CC list of the CC that contain the PUCCH and that have the same TRP identification information as the PUCCH; or, the spatial relationship information is applied to all PUCCHs in the CC list of the CC that contain the PUCCH and that have the same TRP identification information as the PUCCH.

[0073] When the MAC CE activates the spatial relationship information of the first PUCCH corresponding to a certain TRP identifier, the spatial relationship information is applied to all PUCCHs corresponding to that TRP identifier.

[0074] The first PUCCH can be any PUCCH corresponding to a certain TRP identifier or a PUCCH with a preset PUCCH resource identifier corresponding to a certain TRP identifier.

[0075] Through the embodiments of the present invention, multiple spatial relationship information corresponding to different TRP identification information can be indicated, beam indication can be performed on multi-TRP scenarios, and the correct transmission of PUCCH in multi-TRP scenarios can be guaranteed.

[0076] When a network-side device activates multiple spatial relation information for a PUCCH resource, the terminal device can choose one of the spatial relation information to send a PUCCH to the network-side device.

[0077] When the spatial relation information of PUCCH is not configured, the spatial relation information of PUCCH can be determined based on the default TCI state information or QCL information on the corresponding preset TRP identifier information.

[0078] The preset TRP identifier information can be the TRP identifier information associated with the PUCCH resource by the RRC configuration or MAC CE indication, the TRP identifier information corresponding to the PDCCH that schedules the PUCCH, or the TRP identifier information with a default identifier value.

[0079] The default TCI state information or QCL information can be the TCI state information or QCL information of the CORESET corresponding to the preset TRP and having the smallest CORESET id, or the TCI state information of the smallest TCI state id among a set of active TCI state information corresponding to the preset TRP identifier information, or the TCI state information corresponding to the lowest code point in the TCI field of the DCI, or the TCI state information corresponding to the lowest code point with one TCI state information in the TCI field of the DCI, or the TCI state information corresponding to the lowest code point with multiple TCI state information in the TCI of the DCI.

[0080] Through the embodiments of the present invention, multiple spatial relationship information corresponding to different TRP identification information can be indicated, beam indication can be performed on multi-TRP scenarios, and the correct transmission of PUCCH in multi-TRP scenarios can be guaranteed.

[0081] For PUSCH, multiple SRS resources can be associated with different TRP identification information (e.g., each TRP identification information corresponds to a set of SRS resources), or the spatial relation information of an SRS resource can be associated with the TRP identification information, or the source reference signal in the spatial relation information of an SRS resource can be associated with the TRP identification information. In DCI, multiple SRIs, or an SRI with multiple spatial relation information, or an SRI with spatial relation information of multiple source reference signals, are indicated to correspond to different TRP identification information, where multiple source reference signals are associated with different TRP identification information.

[0082] When the DCI indicates multiple SRIs, or indicates an SRI with multiple spatial relations, or indicates an SRI with spatial relation information of multiple source reference signals, the terminal device can autonomously select one SRI from the multiple SRIs to determine the spatial relation information of the PUSCH; or, select one spatial relation information from one SRI with multiple spatial relations to determine the spatial relation information of the PUSCH; or, select one source reference signal from one SRI with spatial relation information of multiple source reference signals.

[0083] Through the embodiments of the present invention, multiple beam information corresponding to different TRP identification information can be indicated, and beam indication can be performed for multi-TRP scenarios, which can ensure the correct transmission of PUSCH in multi-TRP scenarios.

[0084] For CSI-RS, for aperiodic CSI-RS, when the scheduling interval (or triggering interval) between DCI and aperiodic CSI-RS is less than or equal to a preset threshold, if there are other downlink signals on the symbol where the CSI-RS is located, the TCI state information of the CSI-RS is determined based on the TCI state information of the other downlink signals.

[0085] When other downlink signals are PDSCH, for single DCI mode, when the TCI code point indicated by DCI corresponds to two TCI state information, the TCI state information of the PDSCH with the same TRP identifier information as the TCI state information of the CSI-RS (or the source RS in the TCI state information) is used as the TCI state information of the CSI-RS; or, the TCI state information of the PDSCH with the same TRP identifier information as the PDCCH that triggered the CSI-RS is used as the TCI state information of the CSI-RS; or, the default TCI state information in a set of TCI state information corresponding to the preset TRP identifier information is used as the TCI state information of the CSI-RS.

[0086] The correspondence between TCI state information and TRP identification information can be indicated by the network (such as RRC or MAC CE).

[0087] The default TCI state information can be TCI state information with a preset TCI state ID.

[0088] The preset TRP identifier information can be the TRP identifier information corresponding to PDSCH, the TRP identifier information corresponding to PDCCH, or the TRP identifier information corresponding to the TCI state information of CSI-RS.

[0089] For multi-DCI mode, the TCI state information of CSI-RS can be determined based on the TCI state information of PDSCH in the preset TRP identification information.

[0090] The preset TRP identifier information can be the TRP identifier information corresponding to PDSCH, the TRP identifier information corresponding to PDCCH that schedules PDSCH, or the TRP identifier information corresponding to TCI state information of CSI-RS.

[0091] When other downlink signals are periodic CSI-RS, semi-persistent CSI-RS, or another aperiodic CSI-RS whose TCI state is already active, if the aperiodic CSI-RS corresponds to the same TRP identifier information as other CSI-RS, then the TCI state information of this CSI-RS is determined based on the TCI state information of the other CSI-RS. Otherwise, the TCI state information of other CSI-RS can be used, or the default TCI state information corresponding to the same TRP identifier information of the aperiodic CSI-RS can be used (such as the TCI state information with the smallest TCI state id among a set of TCI state information activated by MAC CE).

[0092] If there are no other downlink signals on the symbol where the CSI-RS is located, the TCI state information of the CSI-RS is determined based on the TCI state information of the CORESET with the smallest CORESET id in the CORESET with the same TRP identifier information corresponding to the CSI-RS or the same TRP identifier information corresponding to the PDCCH that triggered the CSI-RS.

[0093] When a network-side device indicates the TCI state information of a CSI-RS on a certain BWP of a certain CC, the TCI state information is applied to all CSI-RS in the CC list of the CC that the CC belongs to, and which have the same TRP identification information as the CSI-RS. Alternatively, the TCI state information is applied to all CSI-RS in the CC list of the CC that the CC belongs to, and which have the same CSI-RS resource index as the CSI-RS and which have the same TRP identification information as the CSI-RS.

[0094] Through the embodiments of the present invention, multiple TCI state information corresponding to different TRP identification information can be indicated, beam indication can be performed on multi-TRP scenarios, and the correct transmission of CSI-RS in multi-TRP scenarios can be guaranteed.

[0095] For SRS, network-side devices can configure or instruct that an SRS resource has multiple spatial relations corresponding to different TRP identification information; or, the spatial relations of an SRS resource include multiple source RSs corresponding to different TRP identification information; or, when configuring the spatial relation information of an SRS in RRC or activating the spatial relation information in MAC CE, the corresponding TRP identification information is carried.

[0096] When a MAC CE activates the spatial relation information of an SRS on a certain BWP of a certain CC, the spatial relation information is applied to all SRS in the CC list of the CC that contain the CC and that have the same TRP identification information as the SRS. Alternatively, the spatial relation information is applied to all SRS in the CC list of the CC that contain the CC and that have the same TRP identification information as the SRS and have the same SRS resource index.

[0097] The MAC CE can carry this TRP identification information.

[0098] When the spatial relation information of SRS is not configured, the spatial relation information of SRS can be determined based on the default TCI state information or QCL information of the corresponding preset TRP identifier information.

[0099] The preset TRP identification information can be the TRP identification information associated with the SRS resource, either from RRC configuration or MAC CE indication.

[0100] The default TCI state information or QCL information can be the TCI state information or QCL information of the CORESET with the smallest CORESET id corresponding to the preset TRP identifier information, the TCI state information of the smallest TCI state id among a group of active TCI state information corresponding to the preset TRP identifier information, the TCI state information corresponding to the lowest code point in the TCI field of the DCI, the TCI state information corresponding to the lowest code point with one TCI state information in the TCI field of the DCI, or the TCI state information corresponding to the lowest code point with multiple TCI state information in the TCI of the DCI.

[0101] Through the embodiments of the present invention, multiple beam information corresponding to different TRP identification information of the indicating channel or reference signal can be used to indicate beams in multi-TRP scenarios, thereby ensuring the correct transmission of SRS in multi-TRP scenarios.

[0102] The network-side equipment mentioned above can be a base station, which can be a commonly used base station, an evolved Node Base Station (eNB), a network-side device in a 5G system (such as a next-generation Node Base Station (gNB) or a transmission and reception point (TRP)), or a cell, or a network-side device in a subsequently evolved communication system. However, the above terminology does not constitute a limitation on the scope of protection of this invention. In some embodiments, the terminal device can be a mobile phone, tablet computer, smartwatch, smart home appliance, etc., and this embodiment of the invention does not limit it.

[0103] Based on the above, embodiments of the present invention provide a beam indication method applied to a terminal device. As shown in Figure 1, Figure 1 is a flowchart illustrating a beam indication method applied to a terminal device provided by an embodiment of the present invention. The beam indication method applied to a terminal device may include:

[0104] S101: Receive beam indication information sent by the network-side device.

[0105] Among them, beam indication information is used to indicate multiple beam information of the channel or reference signal, and multiple beam information corresponds to different TRP identification information.

[0106] S102: Transmit channel or reference signal according to beam indication information.

[0107] The beam indication method of this invention can perform beam indication for multi-TRP scenarios and ensure the correct transmission of channels or reference signals in multi-TRP scenarios.

[0108] In some possible implementations of the embodiments of the present invention, the channel includes any one of the following: PDCCH, PDSCH, PUCCH, and PUSCH;

[0109] The reference signal may include: CSI-RS or SRS.

[0110] In some possible implementations of this invention, the channel includes a PDCCH; the beam indication information may include any one of the following:

[0111] The TCI state pool is used to correspond to all TRP identification information;

[0112] Each TRP identifier corresponds to a TCI state pool;

[0113] Each cell has its own corresponding TCI state pool, and each TRP identifier uses the TCI state pool corresponding to its cell.

[0114] In some possible implementations of the embodiments of the present invention, before transmitting the channel or reference signal according to the beam indication information, the beam indication method applied to the terminal device provided by the embodiments of the present invention further includes:

[0115] Activate the TCI state information corresponding to different TRP identifiers from the TCI state pool.

[0116] In some possible implementations of this invention, activating TCI state information corresponding to different TRP identifier information from the TCI state pool includes:

[0117] Activate TCI state information from the TCI state pool, including multiple quasi-co-address reference signals, each corresponding to a different TRP identifier; or,

[0118] Multiple TCI state information are activated from the TCI state pool, and each TCI state information corresponds to a different TRP identifier.

[0119] In some possible implementations of the embodiments of the present invention, the correspondence between the quasi-co-address reference signal and the TRP identification information, or the correspondence between the TCI status information and the TRP identification information, is determined by a preset rule.

[0120] In some possible implementations of the present invention, when the TCI state information is the TCI state information of the PDCCH on the first BWP of the first CC activated by the MAC CE, the TCI state information is applied to the first PDCCH, and the CORESET where the first PDCCH is located is a CORESET with the same CORESET identifier as the CORESET where the PDCCH is located, which is one of all CCs in the CC list where the first CC is located and has the same TRP identifier information as the CORESET where the PDCCH is located; or, the CORESET where the first PDCCH is located is one of all CCs in the CC list where the first CC is located and has the same TRP identifier information as the CORESET where the PDCCH is located.

[0121] In some possible implementations of the present invention, when the TCI state information is the TCI state information of the second PDCCH corresponding to the first TRP identifier information activated by MAC CE, the TCI state information is applied to all PDCCHs corresponding to the first TRP identifier information.

[0122] In some possible implementations of embodiments of the present invention, the second PDCCH may include:

[0123] PDCCH on any CORESET corresponding to the first TRP identifier information; or,

[0124] The PDCCH on the CORESET with the preset CORESET identifier corresponding to the first TRP identifier information.

[0125] In some possible implementations of this invention, the channel includes PDSCH;

[0126] If the DCI used to schedule the PDSCH does not contain a TCI field, the DCI mode is single DCI mode, and the beam indication information includes:

[0127] The TCI state information of the PDCCH where DCI is located; or,

[0128] In the DCI's TCI field, the lowest code point with multiple TCI state information corresponds to multiple TCI state information, and each of the multiple TCI state information corresponds to a different TRP identifier information.

[0129] If the DCI used to schedule the PDSCH does not contain a TCI state field, the DCI mode is multi-DCI mode, and the beam indication information includes:

[0130] The TCI state information of the PDCCH where DCI is located.

[0131] In some possible implementations of the present invention, when the TCI state information is a set of TCI state information of the PDSCH on the second BWP of the second CC activated by the MAC CE, the set of TCI state information is applied to all PDSCHs in all CCs in the CC list where the second CC is located and which correspond to the same TRP identification information as the PDSCH.

[0132] In some possible implementations of the present invention, when the PDCCH schedules the PDSCH across carriers and the scheduling offset is less than or equal to a preset offset threshold, the TCI state information of the scheduled PDSCH is determined according to the smallest TCI state information among a set of TCI state information activated by the network-side device for the PDSCH, corresponding to the preset TRP identifier information.

[0133] In some possible implementations of the embodiments of the present invention, the preset TRP identification information includes any one of the following:

[0134] The TRP identifier information corresponding to the scheduled PDSCH;

[0135] TRP identification information corresponding to PDCCH;

[0136] TRP identification information with preset values;

[0137] The TRP identifier information corresponding to the TCI status information indicated by the DCI of the PDCCH.

[0138] In some possible implementations of this invention, the channel includes a PUCCH; the beam indication information may include any one of the following:

[0139] A spatial relationship information pool that corresponds to all TRP identification information;

[0140] Each TRP identifier corresponds to a spatial relationship information pool;

[0141] The spatial relationship information pools corresponding to different communities are used, and each TRP identifier uses the spatial relationship information pool corresponding to its community.

[0142] In some possible implementations of the embodiments of the present invention, before transmitting the channel or reference signal according to the beam indication information, the beam indication method applied to the terminal device provided by the embodiments of the present invention further includes:

[0143] Activate spatial relationship information corresponding to different TRP identifiers from the spatial relationship information pool.

[0144] In some possible implementations of this invention, activating spatial relationship information corresponding to different TRP identifiers from the spatial relationship information pool includes:

[0145] Activate spatial relation information from the spatial relation information pool, which includes multiple source reference signals, each corresponding to a different TRP identifier; or,

[0146] Multiple spatial relationship information is activated from the spatial relationship information pool, and each spatial relationship information corresponds to a different TRP identifier.

[0147] In some possible implementations of the embodiments of the present invention, the correspondence between the source reference signal and the TRP identification information, or the correspondence between the spatial relationship information and the TRP identification information, is determined by a preset rule.

[0148] In some possible implementations of the present invention, when the spatial relationship information is the spatial relationship information of the PUCCH on the third BWP of the third CC activated by the MAC CE, the spatial relationship information is applied to all PUCCHs in the CC list where the third CC is located that have the same PUCCH resources and the same TRP identification information as the PUCCH; or, the spatial relationship information is applied to all PUCCHs in the CC list where the third CC is located that have the same TRP identification information as the PUCCH.

[0149] In some possible implementations of the present invention, when the spatial relationship information is the spatial relationship information of the first PDCCH corresponding to the second TRP identifier information activated by MAC CE, the spatial relationship information is applied to all PUCCHs corresponding to the second TRP identifier information.

[0150] In some possible implementations of embodiments of the present invention, the first PUCCH may include:

[0151] Any PUCCH corresponding to the second TRP identifier information; or,

[0152] A PUCCH with a preset PUCCH resource identifier that corresponds to the second TRP identifier information.

[0153] In some possible implementations of the embodiments of the present invention, the beam indication information may further include: TRP identification information.

[0154] In some possible implementations of the embodiments of the present invention, the beam indication method applied to a terminal device provided by the embodiments of the present invention further includes:

[0155] Select one spatial relationship from multiple spatial relationship information.

[0156] In some possible implementations of the embodiments of the present invention, the method further includes:

[0157] If the beam indication information does not include the spatial relation information of the PUCCH, the spatial relation information of the PUCCH is determined based on the default TCI state information or QCL information of the preset TRP identifier information.

[0158] In some possible implementations of the embodiments of the present invention, the preset TRP identification information includes:

[0159] TRP identification information associated with PUCCH resources.

[0160] In some possible implementations of this invention, the default TCI status information or QCL information includes:

[0161] The TCI state information or QCL information of the CORESET with the smallest CORESET id, corresponding to the preset TRP identifier information; or,

[0162] The TCI state information with the smallest TCI state identifier among a set of activated TCI state information corresponding to the preset TRP identifier information; or,

[0163] The TCI state information corresponding to the lowest code point in the TCI field of the DCI; or,

[0164] The TCI field of the DCI contains the TCI state information corresponding to the lowest code point of a TCI state; or,

[0165] The TCI of DCI contains the TCI state information corresponding to the lowest code point with multiple TCI state information.

[0166] In some possible implementations of this invention, the channel includes a PUSCH; beam indication information may include:

[0167] Multiple detection reference signal resources indicate that the multiple detection reference signal resources are associated with different TRP identification information; or,

[0168] A probe reference signal resource indication with multiple spatial relationship information, wherein the multiple spatial relationship information are associated with different TRP identification information; or,

[0169] A probe reference signal resource indicator with spatial relationship information of multiple source reference signals, wherein the multiple source reference signals are associated with different TRP identification information.

[0170] In some possible implementations of the embodiments of the present invention, the beam indication method applied to a terminal device provided by the embodiments of the present invention further includes:

[0171] Choose one SRI from multiple SRIs; or,

[0172] Select one spatial relation from an SRI that has multiple spatial relation information; or,

[0173] Select a source reference signal from a probe reference signal resource indication that has spatial relationship information of multiple source reference signals.

[0174] In some possible implementations of the embodiments of the present invention, the reference signal may include CSI-RS; before transmitting the channel or reference signal according to the beam indication information, the beam indication method applied to the terminal device provided in the embodiments of the present invention further includes:

[0175] If the CSI-RS is an aperiodic CSI-RS, the scheduling interval between the DCI and the aperiodic CSI-RS is less than or equal to a preset interval threshold, and there are other downlink signals on the symbol where the CSI-RS is located, the TCI state information of the CSI-RS is determined based on the TCI state information of the other downlink signals.

[0176] If the CSI-RS is an aperiodic CSI-RS, the scheduling interval between the DCI and the aperiodic CSI-RS is less than or equal to a preset interval threshold, and there are no other downlink signals on the symbol where the CSI-RS is located, the TCI state information of the CSI-RS is determined based on the TCI state information of the CORESET with the smallest CORESET id in the control resource set that has the same TRP identification information as the CSI-RS or the same TRP identification information as the PDCCH that triggered the CSI-RS.

[0177] In some possible implementations of the embodiments of the present invention, if other downlink signals are PDSCH, the DCI mode is single DCI mode;

[0178] The CSI-RS TCI state information is determined based on the TCI state information of other downlink signals, including any one of the following:

[0179] The TCI status information of the PDSCH that corresponds to the same TRP identifier information as the TCI status information of CSI-RS is determined as the TCI status information of CSI-RS.

[0180] The TCI status information of the PDSCH that corresponds to the same TRP identifier information as the source reference signal in the TCI status information of CSI-RS is determined as the TCI status information of CSI-RS.

[0181] The TCI status information of the PDCSH that has the same TRP identifier information as the PDCCH that triggers CSI-RS is determined as the TCI status information of CSI-RS.

[0182] The default TCI status information in a set of TCI status information corresponding to the preset TRP identifier information is determined as the TCI status information of CSI-RS.

[0183] In some possible implementations of this invention, the correspondence between TCI state information and TRP identification information is indicated by the network.

[0184] In some possible implementations of this invention, the default TCI state information includes:

[0185] TCI state information with a preset TCI state identifier.

[0186] In some possible implementations of the embodiments of the present invention, the preset TRP identification information includes:

[0187] TRP identification information corresponding to PDSCH; or,

[0188] TRP identification information corresponding to PDCCH; or,

[0189] TRP identification information corresponding to the TCI status information of CSI-RS.

[0190] In some possible implementations of the embodiments of the present invention, if other downlink signals are PDSCH, the DCI mode is multi-DCI mode;

[0191] The CSI-RS TCI state information is determined based on the TCI state information of other downlink signals, including:

[0192] The TCI state information of CSI-RS is determined based on the TCI state information of the PDSCH in the preset TRP identification information.

[0193] In some possible implementations of the embodiments of the present invention, the preset TRP identification information includes:

[0194] TRP identification information corresponding to PDSCH; or,

[0195] The TRP identifier information corresponding to the PDCCH that schedules the PDSCH; or,

[0196] TRP identification information corresponding to the TCI state information of CSI-RS.

[0197] In some possible implementations of the embodiments of the present invention, if the other downlink signal is a periodic CSI-RS or a semi-persistent CSI-RS or another non-periodic CSI-RS in which the TCI state has been activated;

[0198] The CSI-RS TCI state information is determined based on the TCI state information of other downlink signals, including:

[0199] If the CSI-RS corresponds to the same TRP identification information as other downlink signals, the TCI state information of the CSI-RS is determined based on the TCI state information of the other downlink signals;

[0200] If CSI-RS corresponds to different TRP identification information from other downlink signals, the TCI state information of CSI-RS is determined based on the TCI state information of other downlink signals or the default TCI state information of CSI-RS corresponding to the same TRP identification information.

[0201] In some possible implementations of the present invention, when the TCI status information is the TCI status information of the CSI-RS on the fourth bandwidth portion of the fourth member carrier indicated by the network-side device, the TCI status information is applied to all CSI-RS in the member carrier list where the fourth member carrier is located and which have the same TRP identification information as the CSI-RS, or the TCI status information is applied to CSI-RS with the same CSI-RS resource index in the member carrier list where the fourth member carrier is located and which have the same TRP identification information as the CSI-RS.

[0202] In some possible implementations of the embodiments of the present invention, the reference signal includes SRS; the beam indication information includes:

[0203] A spatial relationship information, which contains multiple source reference signals, each corresponding to a different TRP identifier; or,

[0204] Multiple spatial relationship information, each corresponding to a different TRP identifier.

[0205] In some possible implementations of the present invention, when the spatial relation information is the spatial relation information of the SRS on the fifth BWP of the fifth CC activated by the MAC CE, the spatial relation information is applied to all SRS in all CCs in the CC list where the fifth CC is located and which have the same TRP identification information as the SRS; or, the spatial relation information is applied to all SRS in all CCs in the CC list where the fifth CC is located and which have the same TRP identification information as the SRS and have the same SRS resource index.

[0206] In some possible implementations of the present invention, the method further includes: if the beam indication information does not include the spatial relation information of the SRS; determining the spatial relation information of the SRS based on the default TCI state information or QCL information of the preset TRP identification information.

[0207] In some possible implementations of the embodiments of the present invention, the preset TRP identification information includes:

[0208] TRP identification information associated with SRS resources.

[0209] In some possible implementations of this invention, the default TCI state information or QCL information includes:

[0210] Corresponding to the preset TRP identifier information, the TCI state information or QCL information of the CORESET with the smallest CORESET id; or,

[0211] The TCI state information corresponding to the smallest TCI state ID in a set of activated TCI state information corresponding to the preset TRP identifier information; or,

[0212] The TCI state information corresponding to the lowest code point in the TCI field of the DCI; or,

[0213] The TCI field of the DCI contains the TCI state information corresponding to the lowest code point of a TCI state; or,

[0214] The TCI of DCI contains the TCI state information corresponding to the lowest code point with multiple TCI state information.

[0215] In some possible implementations of the embodiments of the present invention, the above-mentioned TRP identification information can be CORESETPoolIndex.

[0216] This invention also provides a beam indication method applied to a network-side device. The beam indication method applied to a network-side device may include: sending beam indication information to a terminal device, so that the terminal device can transmit a channel or reference signal according to the beam indication information, wherein the beam indication information is used to indicate multiple beam information of the channel or reference signal, and the multiple beam information corresponds to different TRP identification information.

[0217] Corresponding to the above-described method embodiments, this invention also provides a beam indicator device applied to a terminal device, as shown in FIG2. FIG2 is a schematic structural diagram of a beam indicator device applied to a terminal device provided in this invention. The beam indicator device 200 applied to the terminal device may include:

[0218] The receiving module 201 is used to receive beam indication information sent by the network-side device.

[0219] Beam indication information is used to indicate multiple beam information of a channel or reference signal, and multiple beam information corresponds to different TRP identification information.

[0220] The transmission module 202 is used to transmit a channel or reference signal according to beam indication information.

[0221] This invention also provides a beam indication device applied to a network-side device. The beam indication device applied to a network-side device may include: a transmitting module, configured to transmit beam indication information to a terminal device, so that the terminal device can transmit a channel or reference signal according to the beam indication information; wherein the beam indication information is used to indicate multiple beam information of the channel or reference signal, and the multiple beam information corresponds to different TRP identification information.

[0222] Figure 3 is a schematic diagram of the hardware structure of a terminal device provided in an embodiment of the present invention. The terminal device 300 includes, but is not limited to, components such as: a radio frequency unit 301, a network module 302, an audio output unit 303, an input unit 304, a sensor 305, a display unit 306, a user input unit 307, an interface unit 308, a memory 309, a processor 310, and a power supply 311. Those skilled in the art will understand that the terminal device structure shown in Figure 3 does not constitute a limitation on the terminal device; the terminal device may include more or fewer components than shown, or combine certain components, or have different component arrangements. In this embodiment of the present invention, the terminal device includes, but is not limited to, mobile phones, tablet computers, laptop computers, PDAs, in-vehicle terminals, wearable devices, and pedometers.

[0223] The radio frequency unit 301 is used to receive beam indication information, transmission channel or reference signal sent by the network side device; the beam indication information is used to indicate multiple beam information of the channel or reference signal, and the multiple beam information corresponds to different TRP identification information.

[0224] Through the embodiments of the present invention, beam indication can be performed for multi-TRP scenarios, and the correct transmission of channels or reference signals in multi-TRP scenarios can be guaranteed.

[0225] It should be understood that, in this embodiment of the invention, the radio frequency unit 301 can be used for receiving and transmitting signals during information transmission or calls. Specifically, it receives downlink data from the base station and processes it with the processor 310; additionally, it transmits uplink data to the base station. Typically, the radio frequency unit 301 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, etc. Furthermore, the radio frequency unit 301 can also communicate with networks and other devices through a wireless communication system.

[0226] The terminal device provides users with wireless broadband internet access through network module 302, such as helping users send and receive emails, browse web pages, and access streaming media.

[0227] The audio output unit 303 can convert audio data received by the radio frequency unit 301 or the network module 302 or stored in the memory 309 into audio signals and output them as sound. Furthermore, the audio output unit 303 can also provide audio output related to specific functions performed by the terminal device 300 (e.g., call signal reception sound, message reception sound, etc.). The audio output unit 303 includes a speaker, a buzzer, and a receiver, etc.

[0228] Input unit 304 is used to receive audio or video signals. Input unit 304 may include a graphics processing unit (GPU) 3041 and a microphone 3042. The GPU 3041 processes image data of still images or videos acquired by an image capture device (such as a camera) in video capture mode or image capture mode. The processed image frames can be displayed on display unit 306. The image frames processed by GPU 3041 can be stored in memory 309 (or other storage media) or transmitted via radio frequency unit 301 or network module 302. Microphone 3042 can receive sound and process such sound into audio data. The processed audio data can be converted into a format that can be transmitted to a mobile communication base station via radio frequency unit 301 in telephone call mode.

[0229] The terminal device 300 also includes at least one sensor 305, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor and a proximity sensor. The ambient light sensor can adjust the brightness of the display panel 3061 according to the ambient light level, and the proximity sensor can turn off the display panel 3061 and / or backlight when the terminal device 300 is moved to the ear. As a type of motion sensor, an accelerometer sensor can detect the magnitude of acceleration in various directions (generally three axes). When stationary, it can detect the magnitude and direction of gravity and can be used to identify the terminal device's posture (such as landscape / portrait switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer, tapping), etc. The sensor 305 may also include a fingerprint sensor, pressure sensor, iris sensor, molecular sensor, gyroscope, barometer, hygrometer, thermometer, infrared sensor, etc., which will not be described in detail here.

[0230] The display unit 306 is used to display information input by the user or information provided to the user. The display unit 306 may include a display panel 3061, which may be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), or the like.

[0231] User input unit 307 can be used to receive input numerical or character information, and generate key signal inputs related to user settings and function control of the terminal device. Specifically, user input unit 307 includes touch panel 3071 and other input devices 3072. Touch panel 3071, also known as a touch screen, can collect touch operations on or near the user (such as operations performed by the user using a finger, stylus, or any suitable object or accessory on or near touch panel 3071). Touch panel 3071 may include two parts: a touch detection device and a touch controller. The touch detection device detects the user's touch position and the signal generated by the touch operation, and transmits the signal to the touch controller; the touch controller receives touch information from the touch detection device, converts it into touch point coordinates, and sends it to processor 310, which receives and executes commands from processor 310. In addition, touch panel 3071 can be implemented using various types such as resistive, capacitive, infrared, and surface acoustic wave. In addition to touch panel 3071, user input unit 307 may also include other input devices 3072. Specifically, other input devices 3072 may include, but are not limited to, physical keyboards, function keys (such as volume control buttons, power buttons, etc.), trackballs, mice, joysticks, etc., which will not be described in detail here.

[0232] Furthermore, the touch panel 3071 can cover the display panel 3061. When the touch panel 3071 detects a touch operation on or near it, it transmits the information to the processor 310 to determine the type of touch event. Subsequently, the processor 310 provides corresponding visual output on the display panel 3061 according to the type of touch event. Although in Figure 3, the touch panel 3071 and the display panel 3061 are shown as two separate components to implement the input and output functions of the terminal device, in some embodiments, the touch panel 3071 and the display panel 3061 can be integrated to implement the input and output functions of the terminal device. Specific details are not limited here.

[0233] Interface unit 308 serves as an interface for connecting external devices to terminal device 300. For example, external devices may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device with an identification module, an audio input / output (I / O) port, a video I / O port, a headphone port, and so on. Interface unit 308 can be used to receive input from external devices (e.g., data, power, etc.) and transmit the received input to one or more elements within terminal device 300, or it can be used to transmit data between terminal device 300 and external devices.

[0234] The memory 309 can be used to store software programs and various data. The memory 309 may primarily include a program storage area and a data storage area. The program storage area may store the operating system, applications required for at least one function (such as sound playback, image playback, etc.), etc.; the data storage area may store data created based on the use of the mobile phone (such as audio data, phonebook, etc.). Furthermore, the memory 309 may include high-speed random access memory, and may also include non-volatile memory, such as at least one disk storage device, flash memory device, or other volatile solid-state storage device.

[0235] The processor 310 is the control center of the terminal device. It connects various parts of the terminal device via various interfaces and lines. By running or executing software programs and / or modules stored in the memory 309, and by calling data stored in the memory 309, it performs various functions and processes data of the terminal device, thereby providing overall monitoring of the terminal device. The processor 310 may include one or more processing units; preferably, the processor 310 may integrate an application processor and a modem processor. The application processor mainly handles the operating system, user interface, and applications, while the modem processor mainly handles wireless communication. It is understood that the modem processor may not be integrated into the processor 310.

[0236] The terminal device 300 may also include a power supply 311 (such as a battery) for supplying power to various components. Preferably, the power supply 311 can be logically connected to the processor 310 through a power management system, thereby enabling functions such as managing charging, discharging, and power consumption through the power management system.

[0237] In addition, the terminal device 300 includes some functional modules not shown, which will not be described in detail here.

[0238] Preferably, the present invention also provides a terminal device, including a processor 310, a memory 309, and a computer program stored in the memory 309 and executable on the processor 310. When the computer program is executed by the processor 310, it implements the various processes of the above-described beam indication method embodiment applied to the terminal device and achieves the same technical effect. To avoid repetition, it will not be described again here.

[0239] Figure 4 is a schematic diagram of the hardware structure of a network-side device provided in an embodiment of the present invention. The network-side device 400 includes: a memory 401, a processor 402, a transceiver 403, and a computer program stored in the memory 401 and executable on the processor 402.

[0240] The transceiver 403 can be used to: send beam indication information to the terminal device so that the terminal device can transmit the channel or reference signal according to the beam indication information; wherein the beam indication information is used to indicate multiple beam information of the channel or reference signal, and the multiple beam information corresponds to different TRP identification information.

[0241] In Figure 4, the bus architecture can include any number of interconnected buses and bridges, specifically linking various circuits of one or more processors represented by processor 402 and memory represented by memory 401. The bus architecture can also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. The bus interface provides the interface. Transceiver 403 can be multiple elements, including transmitters and transceivers, providing a unit for communicating with various other devices over a transmission medium, for receiving and transmitting data under the control of processor 402. Processor 402 is responsible for managing the bus architecture and general processing, and memory 401 can store data used by processor 402 during operation.

[0242] Preferably, the present invention also provides a network-side device, including a processor 402, a memory 401, and a computer program stored in the memory 401 and executable on the processor 402. When the computer program is executed by the processor 402, it implements various processes of the beam indication method embodiment applied to the network-side device and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0243] This invention also provides a computer-readable storage medium storing computer program instructions. When executed by a processor, these computer program instructions implement various processes of the beam pointing method embodiment provided in this invention for a terminal device or for a network-side device, achieving the same technical effects. To avoid repetition, these instructions are not described further here. Examples of the computer-readable storage medium include non-transitory computer-readable storage media, such as read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0244] The aspects of the present invention have been described above with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It should be understood that each block in the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing apparatus to produce a machine such that these instructions, executable via the processor of the computer or other programmable data processing apparatus, enable the implementation of the functions / actions specified in one or more blocks of the flowchart illustrations and / or block diagrams. Such a processor can be, but is not limited to, a general-purpose processor, a special-purpose processor, a special application processor, or a field-programmable logic circuit. It is also understood that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can also be implemented by dedicated hardware performing the specified functions or actions, or can be implemented by a combination of dedicated hardware and computer instructions.

[0245] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0246] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in the various embodiments of the present invention.

[0247] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of the present invention.

Claims

1. A beam pointing method, comprising: Receive beam indication information sent by network-side equipment, wherein the beam indication information is used to indicate multiple beam information of the channel or reference signal, and the multiple beam information corresponds to different transmit / receive point (TRP) identification information; The channel or the reference signal is transmitted according to the beam indication information.

2. The method according to claim 1, wherein, The channel includes any one of the following: Physical downlink control channel (PDCCH), physical downlink shared channel (PDSCH), physical uplink control channel (PUCCH), and physical uplink shared channel (PUSCH); The reference signal includes: Channel State Information Reference Signal (CSI-RS) or Sounding Reference Signal (SRS).

3. The method according to claim 2, wherein, The channel includes a PDCCH; the beam indication information includes any one of the following: The Transmission Configuration Indicator (TCI) state pool is used to correspond to all TRP identification information; The TCI state pool corresponding to each TRP identifier; Different cells correspond to different TCI state pools, and each TRP identifier corresponds to the TCI state pool of its respective cell.

4. The method according to claim 3, wherein, Before transmitting the channel or the reference signal according to the beam indication information, the method further includes: Activate the TCI state information corresponding to different TRP identifiers from the TCI state pool.

5. The method according to claim 4, wherein, Activating TCI state information corresponding to different TRP identifiers from the TCI state pool includes: Activate TCI state information from the TCI state pool, including multiple quasi-co-address reference signals, each corresponding to a different TRP identifier; or, Multiple TCI state information are activated from the TCI state pool, and each of the multiple TCI state information corresponds to a different TRP identifier.

6. The method according to claim 5, wherein, The correspondence between the quasi-co-address reference signal and the TRP identification information, or the correspondence between the TCI status information and the TRP identification information, is determined by a preset rule.

7. The method according to claim 4, wherein, When the TCI status information is the TCI status information of the PDCCH on the first bandwidth portion of the first member carrier activated by the medium access control control element, the TCI status information is applied to the first PDCCH, and the control resource set in which the first PDCCH is located is a control resource set among all member carriers in the member carrier list in which the first member carrier is located, that corresponds to the same TRP identification information as the control resource set in which the PDCCH is located, and that has the same control resource set identification; or, the control resource set in which the first PDCCH is located is a control resource set among all member carriers in the member carrier list in which the first member carrier is located, and that corresponds to the same TRP identification information as the control resource set in which the PDCCH is located.

8. The method according to claim 4, wherein, When the TCI status information is the TCI status information of the second PDCCH corresponding to the first TRP identification information activated by the media access control control element, the TCI status information is applied to all PDCCHs corresponding to the first TRP identification information.

9. The method according to claim 8, wherein, The second PDCCH includes: PDCCH on any control resource set corresponding to the first TRP identification information; or, The PDCCH on the control resource set with the preset control resource set identifier corresponding to the first TRP identifier information.

10. The method according to claim 2, wherein, The channel includes PDSCH; If the downlink control information (DCI) of the PDSCH scheduling does not contain a TCI field, the DCI mode is a single DCI mode, and the beam indication information includes: The TCI status information of the PDCCH where the DCI is located; or, The lowest code point in the TCI field of the DCI contains multiple TCI state information, and each of the multiple TCI state information corresponds to a different TRP identifier. If the DCI used to schedule the PDSCH does not have a TCI domain, the DCI mode is a multi-DCI mode, and the beam indication information includes: The TCI status information of the PDCCH where the DCI is located.

11. The method according to claim 10, wherein, When the TCI status information is a set of TCI status information for a PDSCH on the second bandwidth portion of a second member carrier activated by a medium access control element, the set of TCI status information is applied to all PDSCHs in the member carrier list where the second member carrier is located, and all PDSCHs have the same TRP identification information as the PDSCH.

12. The method according to claim 10, wherein, When the PDCCH schedules the PDSCH across carriers, and the scheduling offset is less than or equal to the preset offset threshold, the TCI status information of the scheduled PDSCH is determined according to the smallest TCI status information in a set of TCI status information activated by the network-side device for the PDSCH, corresponding to the preset TRP identifier information.

13. The method according to claim 12, wherein, The preset TRP identifier information includes any one of the following: The TRP identifier information corresponding to the scheduled PDSCH; TRP identification information corresponding to PDCCH; TRP identification information with preset values; The TRP identifier information corresponding to the TCI status information indicated by the DCI of the PDCCH.

14. The method according to claim 2, wherein, The channel includes PUCCH; the beam indication information includes any one of the following: A spatial relationship information pool that corresponds to all TRP identification information; The spatial relationship information pool corresponding to each TRP identifier; The spatial relationship information pools corresponding to different communities are defined, and each TRP identifier corresponds to the spatial relationship information pool of its respective community.

15. The method according to claim 14, wherein, Before transmitting the channel or the reference signal according to the beam indication information, the method further includes: Activate spatial relationship information corresponding to different TRP identifiers from the spatial relationship information pool.

16. The method according to claim 15, wherein, Activating spatial relationship information corresponding to different TRP identifiers from the spatial relationship information pool includes: Activate spatial relationship information comprising multiple source reference signals from the spatial relationship information pool, wherein each source reference signal corresponds to a different TRP identifier; or, Multiple spatial relationship information is activated from the spatial relationship information pool, and each of the multiple spatial relationship information corresponds to a different TRP identifier.

17. The method according to claim 16, wherein, The correspondence between the source reference signal and the TRP identification information, or the correspondence between the spatial relationship information and the TRP identification information, is determined by a preset rule.

18. The method according to claim 15, wherein, When the spatial relationship information is the spatial relationship information of a PUCCH on the third bandwidth portion of a third member carrier activated by a medium access control element, the spatial relationship information is applied to all member carriers in the member carrier list where the third member carrier is located, and to PUCCHs with the same PUCCH resource identifier as the PUCCH with the same TRP identifier information; or, the spatial relationship information is applied to all PUCCHs in the member carrier list where the third member carrier is located, and to PUCCHs with the same TRP identifier information as the PUCCH.

19. The method according to claim 15, wherein, When the spatial relationship information is the spatial relationship information of the first PUCCH corresponding to the second TRP identification information activated by the media access control element, the spatial relationship information is applied to all PUCCHs corresponding to the second TRP identification information.

20. The method according to claim 19, wherein, The first PUCCH includes: Any PUCCH corresponding to the second TRP identifier information; or, The PUCCH with a preset PUCCH resource identifier corresponding to the second TRP identifier information.

21. The method according to claim 1, wherein, The beam indication information also includes: TRP identification information.

22. The method of claim 15, further comprising: Select one spatial relationship from multiple spatial relationship information.

23. The method of claim 14, further comprising: If the beam indication information does not include the spatial relationship information of PUCCH, the spatial relationship information of PUCCH is determined according to the default TCI status information or quasi-co-address information of the corresponding preset TRP identifier information.

24. The method according to claim 23, wherein, The preset TRP identification information includes: TRP identification information associated with PUCCH resources.

25. The method according to claim 23, wherein, The default TCI status information or quasi-co-address information includes: TCI status information or quasi-co-address information of the control resource set that corresponds to the preset TRP identifier information and has a minimum control resource set identifier; or, The TCI state information with the smallest TCI state identifier among a set of activated TCI state information corresponding to the preset TRP identifier information; or, The TCI state information corresponding to the lowest code point in the TCI field of the DCI; or, The TCI field of the DCI contains the TCI state information corresponding to the lowest code point with TCI state information; or The TCI of DCI contains the TCI state information corresponding to the lowest code point with multiple TCI state information.

26. The method according to claim 2, wherein, The channel includes PUSCH; the beam indication information includes: Multiple detection reference signal resources indicate that the multiple detection reference signal resources are associated with different TRP identification information; or, A detection reference signal resource indication having multiple spatial relationship information, wherein the multiple spatial relationship information is associated with different TRP identification information; or, A probe reference signal resource indicator with spatial relationship information of multiple source reference signals, wherein the multiple source reference signals are associated with different TRP identification information.

27. The method of claim 26, further comprising: Select one probe reference signal resource indication from multiple probe reference signal resource indications; or, Select one spatial relationship information from a detection reference signal resource indication that has multiple spatial relationship information; or, Select a source reference signal from a probe reference signal resource indication that has spatial relationship information of multiple source reference signals.

28. The method according to claim 2, wherein, The reference signal includes CSI-RS; prior to transmitting the channel or the reference signal according to the beam indication information, the method further includes: If the CSI-RS is an aperiodic CSI-RS, the scheduling interval between the DCI and the aperiodic CSI-RS is less than or equal to a preset interval threshold, and there are other downlink signals on the symbol where the CSI-RS is located, the TCI status information of the CSI-RS is determined based on the TCI status information of the other downlink signals; If the CSI-RS is an aperiodic CSI-RS, the scheduling interval between the DCI and the aperiodic CSI-RS is less than or equal to a preset interval threshold, and there are no other downlink signals on the symbol where the CSI-RS is located, the TCI status information of the control resource set with the smallest control resource set identifier is determined according to the control resource set with the same TRP identifier information corresponding to the CSI-RS or the same TRP identifier information corresponding to the PDCCH that triggered the CSI-RS.

29. The method according to claim 28, wherein, If the other downlink signal is PDSCH, the DCI mode is single DCI mode; The determination of the TCI status information of the CSI-RS based on the TCI status information of the other downlink signals includes any one of the following: The TCI status information of the PDSCH that has the same TRP identifier information as the TCI status information of the CSI-RS is determined as the TCI status information of the CSI-RS. The TCI status information of the PDSCH that corresponds to the same TRP identifier information as the source reference signal in the TCI status information of the CSI-RS is determined as the TCI status information of the CSI-RS. The TCI status information of the PDSCH that has the same TRP identification information as the PDCCH that triggers the CSI-RS is determined as the TCI status information of the CSI-RS. The default TCI status information in a set of TCI status information corresponding to the preset TRP identifier information is determined as the TCI status information of the CSI-RS.

30. The method according to claim 29, wherein, The default TCI status information includes: TCI status information with a preset TCI status identifier.

31. The method according to claim 29, wherein, The preset TRP identification information includes: The TRP identification information corresponding to the PDSCH; or, The TRP identification information corresponding to the PDCCH; or, TRP identification information corresponding to the TCI status information of CSI-RS.

32. The method according to claim 28, wherein, If the other downlink signal is PDSCH, the DCI mode is multi-DCI mode; Determining the TCI status information of the CSI-RS based on the TCI status information of the other downlink signals includes: The TCI status information of the CSI-RS is determined based on the TCI status information of the PDSCH corresponding to the preset TRP identifier information.

33. The method according to claim 32, wherein, The preset TRP identification information includes: TRP identification information corresponding to PDSCH; or, The TRP identification information corresponding to the PDCCH that schedules the PDSCH; or, TRP identification information corresponding to the TCI status information of CSI-RS.

34. The method according to claim 28, wherein, If the other downlink signal is a periodic CSI-RS, a semi-persistent CSI-RS, or another non-periodic CSI-RS for which the TCI state has already taken effect; Determining the TCI status information of the CSI-RS based on the TCI status information of the other downlink signals includes: If the CSI-RS corresponds to the same TRP identifier information as the other downlink signals, the TCI status information of the CSI-RS is determined based on the TCI status information of the other downlink signals; If the CSI-RS corresponds to different TRP identifier information than the other downlink signals, the TCI status information of the CSI-RS is determined according to the TCI status information of the other downlink signals or the default TCI status information that corresponds to the same TRP identifier information as the CSI-RS.

35. The method according to claim 28, wherein, When the TCI status information is the TCI status information of the CSI-RS on the fourth bandwidth portion of the fourth member carrier indicated by the network-side device, the TCI status information is applied to all CSI-RS in the member carrier list where the fourth member carrier is located and which have the same TRP identification information as the CSI-RS; or, the TCI status information is applied to all CSI-RS with the same CSI-RS resource index in the member carrier list where the fourth member carrier is located and which have the same TRP identification information as the CSI-RS.

36. The method according to claim 2, wherein, The reference signal includes SRS; the beam indication information includes: A spatial relationship information, wherein the spatial relationship information comprises multiple source reference signals, and the multiple source reference signals respectively correspond to different TRP identification information; or, Multiple spatial relationship information, each corresponding to a different TRP identifier.

37. The method according to claim 36, wherein, When the spatial relationship information is the spatial relationship information of the SRS on the fifth bandwidth portion of the fifth member carrier activated by the medium access control element, the spatial relationship information is applied to all SRS in the member carrier list where the fifth member carrier is located and which have the same TRP identification information as the SRS; or, the spatial relationship information is applied to SRS with the same SRS resource index in the member carrier list where the fifth member carrier is located and which have the same TRP identification information as the SRS.

38. The method of claim 36, further comprising: If the beam indication information does not include the spatial relationship information of the SRS, the spatial relationship information of the SRS is determined according to the default TCI status information or quasi-co-address information of the corresponding preset TRP identifier information.

39. The method according to claim 38, wherein, The preset TRP identification information includes: TRP identification information associated with SRS resources.

40. The method according to claim 38, wherein, The default TCI status information or quasi-co-address information includes: TCI status information or quasi-co-address information of the control resource set with a minimum control resource set identifier, corresponding to the preset TRP identifier information; or, The TCI state information with the smallest TCI state identifier among a set of activated TCI state information corresponding to the preset TRP identifier information; or, The TCI state information corresponding to the lowest code point in the TCI field of the DCI; or, The TCI field of the DCI contains the TCI state information corresponding to the lowest code point with TCI state information; or, The TCI of DCI contains the TCI state information corresponding to the lowest code point with multiple TCI state information.

41. A beam pointing method, comprising: A beam indication information is sent to a terminal device so that the terminal device can transmit a channel or reference signal according to the beam indication information, wherein the beam indication information is used to indicate multiple beam information of the channel or reference signal, and the multiple beam information corresponds to different TRP identification information.

42. A beam pointing device, comprising: The receiving module is used to receive beam indication information sent by the network-side device. The beam indication information is used to indicate multiple beam information of the channel or reference signal, and the multiple beam information corresponds to different TRP identification information. A transmission module is used to transmit the channel or the reference signal according to the beam indication information.

43. A beam pointing device, comprising: A transmitting module is used to transmit beam indication information to a terminal device, so that the terminal device can transmit a channel or reference signal according to the beam indication information; wherein the beam indication information is used to indicate multiple beam information of the channel or reference signal, and the multiple beam information corresponds to different TRP identification information.

44. A terminal device, comprising: A memory, a processor, and a computer program stored in the memory and executable on the processor; When the processor executes the computer program, it implements the beam pointing method as described in any one of claims 1 to 40.

45. A network-side device, comprising: A memory, a processor, and a computer program stored in the memory and executable on the processor; When the processor executes the computer program, it implements the beam indication method as described in claim 41.

46. ​​A computer-readable storage medium storing a computer program that, when executed by a processor, implements the beam pointing method as claimed in any one of claims 1 to 41.