Beam Information Indication, Acquisition Method, Device, Terminal and Network Side Device

Abstract

The present application discloses a method and apparatus for beam information indication and acquisition, a terminal, and a network-side device, belonging to the field of communication technologies. The beam information acquisition method of the present application includes: obtaining first indication information, where the first indication information is used to indicate the beam information of at least two terminals. In the embodiments of the present application, the beam information of at least two terminals is indicated by the first indication information, so that the purpose of common beam indication for at least two terminals can be achieved through the first indication information, and further, when the number of terminals is large, signaling overhead can be reduced.

Description

Technical Field

[0001] This application relates to the field of communication technologies, and in particular, to a method and apparatus for beam information indication and acquisition, a terminal, and a network-side device. Background Art

[0002] After beam measurement and beam reporting, the network can perform beam indication on the channels or reference signals of the downlink and uplink to establish a beam link between the network and a user equipment (UE, also referred to as a terminal) for transmitting channels or reference signals. However, in related technologies, the beam indication mechanisms for various channels and reference signals are not the same, requiring a large amount of control signaling and resulting in a large signaling overhead. Summary of the Invention

[0003] Embodiments of this application provide a method and apparatus for beam information indication and acquisition, a terminal, and a network-side device, which can solve the problem in related technologies that the beam indication mechanisms for various channels and reference signals are not the same, requiring a large amount of control signaling and resulting in a large signaling overhead.

[0004] In a first aspect, a method for acquiring beam information is provided, which is applied to a terminal. The method includes:

[0005] Obtaining first indication information, where the first indication information is used to indicate beam information of at least two terminals.

[0006] In a second aspect, an apparatus for acquiring beam information is provided, which is applied to a terminal and includes:

[0007] A first acquisition module, configured to obtain first indication information, where the first indication information is used to indicate beam information of at least two terminals.

[0008] In a third aspect, a method for indicating beam information is provided, which is applied to a network-side device. The method includes:

[0009] Sending first indication information, where the first indication information is used to indicate beam information of at least two terminals.

[0010] In a fourth aspect, an apparatus for indicating beam information is provided, which is applied to a network-side device and includes:

[0011] A first sending module, configured to send first indication information, where the first indication information is used to indicate beam information of at least two terminals.

[0012] In a fifth aspect, a terminal is provided. The terminal includes a processor, a memory, and a program or instruction stored in the memory and executable on the processor. When the program or instruction is executed by the processor, the steps of the method described in the first aspect are implemented.

[0013] In a sixth aspect, a network-side device is provided. The network-side device includes a processor, a memory, and a program or instruction stored on the memory and executable on the processor. When the program or instruction is executed by the processor, the steps of the method described in the third aspect are implemented.

[0014] In a seventh aspect, a readable storage medium is provided. A program or instruction is stored on the readable storage medium. When the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented, or the steps of the method described in the third aspect are implemented.

[0015] In an eighth aspect, a chip is provided. The chip includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is configured to run a program or instruction to implement the method described in the first aspect, or to implement the method described in the third aspect.

[0016] In the embodiments of the present application, the beam information of at least two terminals is indicated by first indication information, so that the purpose of performing common beam indication on at least two terminals through the first indication information can be achieved. Furthermore, when the number of terminals is large, the signaling overhead can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A structural diagram of a network system to which the embodiments of the present application can be applied;

[0018] Figure 2 A flowchart showing the method for obtaining beam information according to the embodiments of the present application;

[0019] Figure 3 A flowchart showing the method for indicating beam information according to the embodiments of the present application;

[0020] Figure 4 A block diagram showing the modules of the beam information acquisition device according to the embodiments of the present application;

[0021] Figure 5 A block diagram showing the structure of the communication device according to the embodiments of the present application;

[0022] Figure 6 A block diagram showing the structure of the terminal according to the embodiments of the present application;

[0023] Figure 7 A block diagram showing the modules of the beam information indication device according to the embodiments of the present application;

[0024] Figure 8 A block diagram showing the structure of the network-side device according to the embodiments of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.

[0026] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such data may be interchanged under appropriate circumstances so that the embodiments of the present application can be implemented in an order different from those illustrated or described herein, and the objects distinguished by "first" and "second" are usually of the same category, and the number of objects is not limited. For example, the first object may be one or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally means an "or" relationship between the associated objects before and after.

[0027] It is worth noting that the technology described in the embodiments of the present application is not limited to the Long Term Evolution (LTE) / LTE-Advanced (LTE-A) system, and can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), and other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described technology can be used in the above-mentioned systems and radio technologies, as well as in other systems and radio technologies. However, the following description describes the New Radio (NR) system for example purposes, and the NR term is used in most of the following descriptions, although these technologies can also be applied to applications other than NR system applications, such as the 6th Generation (6G) communication system.

[0028] Figure 1The block diagram of a wireless communication system to which the embodiments of the present application can be applied is shown. The wireless communication system includes a terminal 11 and a network-side device 12. Among them, the terminal 11 can also be referred to as a terminal device or a user terminal (User Equipment, UE). The terminal 11 can be a mobile phone, a tablet personal computer, a laptop computer or a notebook computer, a personal digital assistant (Personal Digital Assistant, PDA), a handheld computer, a netbook, an ultra-mobile personal computer (UMPC), a mobile Internet device (Mobile Internet Device, MID), a wearable device or a vehicle-mounted device (VUE), a pedestrian terminal (PUE), etc. The wearable device includes: a bracelet, an earphone, glasses, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiments of the present application. The network-side device 12 can be a base station or a core network. Among them, the base station can be referred to as a Node B, an evolved Node B, an access point, a base transceiver station (Base Transceiver Station, BTS), a radio base station, a radio transceiver, a basic service set (Basic Service Set, BSS), an extended service set (Extended Service Set, ESS), a B node, an evolved B node (eNB), a home B node, a home evolved B node, a WLAN access point, a WiFi node, a transmitting and receiving point (Transmitting Receiving Point, TRP) or some other suitable term in the art. As long as the same technical effect is achieved, the base station is not limited to specific technical terms. It should be noted that in the embodiments of the present application, only the base station in the NR system is taken as an example, but the specific type of the base station is not limited.

[0029] To enable those skilled in the art to better understand the embodiments of the present application, the following description is first made.

[0030] I. Regarding the beam indication mechanism:

[0031] After beam measurement and beam reporting, the network can perform beam indication on the downlink and uplink channels or reference signals for establishing a beam link between the network and the terminal UE to achieve the transmission of the channels or reference signals.

[0032] 1. For the beam indication of the Physical Downlink Control Channel (PDCCH), the network configures K Transmission Configuration Indication states (TCI states) for each Control Resource Set (CORESET) using Radio Resource Control (RRC) signaling. When K > 1, 1 TCI state is indicated or activated by the Medium Access Control Element (MAC CE). When K = 1, no additional MAC CE command is required. When the UE monitors the PDCCH, the same Quasi-Colocation (QCL) is used for all Search Spaces within the CORESET, that is, the same TCI state is used to monitor the PDCCH. The reference signal (RS) in this TCI state, such as the Channel State Information Reference Signal resource (CSI-RS), semi-persistent CSI-RS resource, Synchronic Signal Block (SSB), etc., is spatially QCL with the port of the UE-specific Physical Downlink Control Channel-specific Demodulation Reference Signal (UE-specific PDCCH DMRS). The UE can thus know which receiving beam to use to receive the PDCCH based on this TCI state.

[0033] 2. For the beam indication of the Physical Downlink Shared Channel (PDSCH), the network configures M TCI states through RRC signaling, then activates 2N TCI states using the MAC CE command, and then notifies the TCI state through the N-bit TCI field of the Downlink Control Information (DCI). The reference signal in this TCI state is QCL with the Demodulation Reference Signal (DMRS) port of the PDSCH to be scheduled. The UE can know which receiving beam to use to receive the PDSCH according to this TCI state.

[0034] 3. For the beam indication of the Channel State Information Reference Signal (CSI-RS), when the CSI-RS type is periodic CSI-RS, the network configures the QCL information for the CSI-RS resource through RRC signaling. When the CSI-RS type is semi-persistent CSI-RS, the network indicates its QCL information when activating a CSI-RS resource from the CSI-RS resource set configured by RRC through the MAC CE command. When the CSI-RS type is aperiodic CSI-RS, the network configures the QCL for the CSI-RS resource through RRC signaling and uses DCI to trigger the CSI-RS.

[0035] 4. For the beam indication of the Physical Uplink Control Channel (PUCCH), the network configures the spatial relation information for each PUCCH resource through the Physical Uplink Control Channel Spatial Relation Information (PUCCH-SpatialRelationInfo) using RRC signaling. When the spatial relation information configured for the PUCCH resource contains multiple, one of the parameter spatial relation information is indicated or activated using the MAC-CE. When the spatial relation information configured for the PUCCH resource contains only 1, no additional MAC CE command is required.

[0036] 5. For the beam indication of the Physical Uplink Shared Channel (PUSCH), the spatial relation information of the PUSCH is that when the DCI carried by the PDCCH schedules the PUSCH, each SRI code point in the Scheduling Request Indication field (SRI field) of the DCI indicates an SRI, and this SRI is used to indicate the spatial relation information of the PUSCH.

[0037] 6. For the beam indication of the Sounding Reference Signal (SRS), when the SRS type is periodic SRS, the network configures the spatial relation information for the SRS resource through RRC signaling. When the SRS type is semi-persistent SRS, the network activates one from a set of spatial relation information configured by RRC through MAC CE signaling. When the SRS type is aperiodic SRS, the network configures the spatial relation information for the SRS resource through RRC signaling, and can also use MAC CE signaling to update the spatial relation information of the aperiodic SRS resource.

[0038] II. Regarding beam indication in the multi-Transmission Reception Point (multi-TRP) scenario:

[0039] The multi-TRP scenario was introduced in 3GPP Release 16. According to the transmission mode of the control information, it can be divided into DCI single transmission and DCI multi-transmission. The former is to send DCI on one TRP to schedule data transmission on multiple TRPs, and the latter is to allow sending DCI on multiple TRPs to separately schedule data transmission on their respective TRPs.

[0040] When the DCI schedules the PDSCH, when the scheduling offset or time offset between the DCI and the PDSCH is less than or equal to a preset threshold, the default beam needs to be used to transmit the PDSCH. The prior art stipulates as follows:

[0041] 1. For the multi-transmission of DCI based on multi-Transmission Reception Point / multi-Transmission Reception Panel, if the control resource set index (CORESET Pool Index) is configured, when the above scheduling interval is less than or equal to a preset threshold, the UE assumes that the reference information in the QCL information of the PDCCH with the lowest control resource set index (CORESET with lowest index) that has the same control resource set index value as the configured one is QCL with the PDSCH DMRS port.

[0042] The above CORESET with lowest index is the CORESET with lowest index in the CORESET that the UE needs to monitor corresponding to its respective CORESET Pool Index value in the latest slot. Here, the latest slot refers to the slot in which there is at least one CORESET associated with the corresponding CORESET Pool Index in the activated bandwidth part (BWP) of the serving cell.

[0043] If the UE does not support this feature, regardless of how the CORESET Pool Index is configured, the rules of 3GPP Release 15 are reused, that is, the CORESET with lowest index is the CORESET with lowest index in the CORESET that the UE needs to monitor in the latest slot, regardless of the CORESET Pool Index.

[0044] 2. For the single-transmission of DCI based on single-Transmission Reception Point / single-Transmission Reception Panel, when the above scheduling interval is less than or equal to a preset threshold and after receiving the activation command of the TCI state of the UE-specific PDSCH, the UE assumes that the PDSCH DMRS port uses the QCL parameters of the preset TCI state. That is, in the TCI state used for the activation of the PDSCH, the TCI state corresponding to the lowest code point is selected from the TCI code bits containing 2 different TCI states.

[0045] If all TCI codepoints correspond to a single TCI state, the behavior of Release 15 is used.

[0046] Among them, the beam information mentioned above can also be referred to as spatial relation information, spatial domain transmission filter information, spatial filter information, transmission configuration indication state (TCI state) information, quasi co-location (QCL) information, or QCL parameters, etc. Among them, downlink beam information can usually be represented by TCI state information or QCL information, and uplink beam information can usually be represented by spatial relation information. The identifier of the panel can be: the identifier of the antenna panel, the reference signal resource identifier, the reference signal resource set identifier, the TCI state identifier, the QCL information identifier, or the spatial relation identifier, etc.

[0047] As Figure 2 shown, an embodiment of the present application provides a method for obtaining beam information, which is applied to a terminal. The method includes:

[0048] Step 201: Obtain first indication information, where the first indication information is used to indicate the beam information of at least two terminals.

[0049] Here, the above first indication information can perform a common beam indication for at least two terminals. For example, for a high-frequency communication system, the communication link between the network and the terminal usually uses a single-beam mode, that is, the beam directions of the control channel, data channel, and reference signal are basically the same. At this time, the above first indication information can be considered for common beam indication, without separately performing beam indication for each channel and reference signal. That is, the present application can perform common beam indication for a large number of terminals, thereby reducing signaling overhead and ensuring the flexibility and robustness of beam indication.

[0050] The method for obtaining beam information according to the embodiment of the present application indicates the beam information of at least two terminals through the first indication information, so as to achieve the purpose of performing common beam indication for at least two terminals through the first indication information, and further reducing signaling overhead when the number of terminals is large.

[0051] Optionally, the first indication information is used to indicate the beam information of a terminal group, and the terminal group includes the at least two terminals.

[0052] In the embodiment of the present application, multiple terminals can be grouped, and then the beam information of the terminal group is indicated through the first indication information to achieve the purpose of saving the overhead of control signaling.

[0053] Optionally, the beam information acquisition method further includes: obtaining second indication information for indicating the grouping information of the terminal group;

[0054] Wherein, the second indication information includes the identifier of the terminal group, or the second indication information includes the identifier of the terminal group and the identifier of each terminal in the terminal group.

[0055] Optionally, the network side device indicates terminal grouping based on information such as the Synchronization Signal / Physical Broadcast Channel block (SSB) Resource Indicator (RI) / CSI-RS Resource Indicator (CRI) in the beam report of each terminal. That is, according to the beam information carried in the beam report, terminals with the same or similar beam information (even with less interference between beams) can be grouped into one group.

[0056] Optionally, obtaining the second indication information includes: obtaining the second indication information through Radio Resource Control (RRC) signaling, Medium Access Control Control Element (MAC CE) signaling, or Downlink Control Information (DCI) signaling. That is, the network side device can use RRC signaling, MAC CE signaling, or DCI signaling to indicate terminal grouping information to the terminal. Among them, the identifier (UE ID) information of the terminal, such as the Cell Radio Network Temporary Identifier (C-RNTI) of the UE, can be carried in the second indication information.

[0057] Optionally, the first indication information includes at least one of the following:

[0058] The identifier of the terminal group and a beam information; wherein, all UEs in the terminal group can use the same beam information;

[0059] The identifier of at least one terminal and a beam information; wherein, these terminals can use the same one beam information;

[0060] The identifier of one terminal and the corresponding beam information; wherein, other UEs can use the beam information of this UE;

[0061] The identifier of at least one terminal and the beam information corresponding to the identifier of each terminal; wherein, each UE can use its respective corresponding beam information.

[0062] Optionally, obtaining the first indication information includes: obtaining the first indication information through DCI signaling. The DCI signaling is located on the first set of common PDCCHs.

[0063] Optionally, the beam information obtaining method further includes: obtaining third indication information, where the third indication information is used to indicate the time-frequency information required for monitoring the first set of common PDCCHs.

[0064] For example, the third indication information can be obtained by obtaining network signaling (such as MAC CE signaling). Optionally, the above third indication information is sent by the network-side device when at least one terminal state in the terminal group changes (such as moving or rotating, etc.), or when the state change reaches a preset condition (such as the moving distance reaches a preset distance or the rotation angle reaches a predetermined angle).

[0065] Optionally, the third indication information includes at least one of the following:

[0066] The control resource set (CORESET) information corresponding to the first set of common PDCCHs;

[0067] The search space information corresponding to the first set of common PDCCHs.

[0068] In an embodiment of the present application, after the terminal moves, another SSB that meets the preset conditions can be determined by measuring the SSB. The network-side device sends the CORESET information and / or search space information to the terminal according to the mapping relationship or association relationship between the SSB and the COSESET and / or search space. The terminal can obtain the TCI state information of the first set of common PDCCHs according to the received CORESET information and / or the TCI state information of the search space information to monitor the first set of common PDCCHs.

[0069] Optionally, the beam information obtaining method further includes: determining the first beam information used by the first set of common PDCCHs. Optionally, determining the first beam information used by the first set of common PDCCHs includes at least one of the following:

[0070] Determining the first beam information according to the synchronization signal / physical broadcast channel signal block SSB beam information measured by the terminal at the initial access and meeting the preset conditions;

[0071] Determining the first beam information according to the fourth indication information;

[0072] After the first time, determining the first beam information according to the fourth indication information;

[0073] Before the first time, determine the first beam information according to the default beam information;

[0074] Wherein, the fourth indication information is used to indicate the TCI state information of the first set of common PDCCH.

[0075] Here, the fourth indication information can be obtained through RRC signaling or MAC CE signaling.

[0076] Optionally, when the first beam information is indicated by MAC CE signaling, the first time is the time after the first preset duration of the acknowledgement (ACK) information of transmitting the MAC CE signaling.

[0077] Alternatively, when the first beam information is indicated by the previous DCI, the first time is the moment when the time interval between the PDCCH where the previous DCI is located and the current set of common PDCCH is greater than or equal to a preset threshold, and the PDCCH where the previous DCI is located is the previous set of common PDCCH or the previous dedicated PDCCH.

[0078] Alternatively, when the first beam information is indicated by RRC signaling, the first time is the time after the second preset duration of receiving the RRC signaling.

[0079] In the embodiments of the present application, the above first time can be understood as the effective time of the first beam information. When the first beam information is indicated by different methods, the time represented by the first time is different. For example, when the first beam information is indicated by MAC CE signaling, the first time refers to the time after the first preset duration after the hybrid automatic repeat request acknowledgement (HARQ-ACK) of receiving the MAC CE signaling is ACK, where HARQ-ACK includes ACK and negative acknowledge (NACK).

[0080] Optionally, the default beam information includes one of the following:

[0081] The SSB beam information measured by the terminal at initial access and meeting the preset conditions;

[0082] The beam information of the CORESET with the smallest CORESET ID in the current cell;

[0083] The current beam information or the original beam information, where the original beam information refers to the beam used before the first time.

[0084] The beam information indicated by the TCI state with a preset identifier in the TCI state pool.

[0085] Optionally, the beam information obtaining method further includes: determining the monitoring occasion information of the first set of common PDCCHs according to the TCI state information of the first set of common PDCCHs. The determining the monitoring occasion information of the first set of common PDCCHs according to the TCI state information of the first set of common PDCCHs includes:

[0086] Obtaining the configuration information of the first search space, where the configuration information includes monitoring occasion information (monitoringoccasion); determining the monitoring occasion information of the first set of common PDCCHs according to the TCI state information of the first set of common PDCCHs and a preset corresponding relationship, where the preset corresponding relationship is the corresponding relationship between the monitoring occasion information and the TCI state information of the set of common PDCCHs, and one TCI state information corresponds to at least one monitoring occasion information;

[0087] Alternatively, it is not necessary for the network side device to configure, but to determine the monitoring occasion information of the first set of common PDCCHs according to rules, that is, determining the synchronization signal / physical broadcast channel signal block SSB according to the source reference signal (ReferenceSignal, RS) in the TCI state information of the first set of common PDCCHs; determining the monitoring occasion information of the first set of common PDCCHs according to the parameter information of the SSB; for example, the source RS (i.e., source RS) is the SSB, or the QCL source of the source RS is the SSB;

[0088] Alternatively, determining the monitoring occasion information of the first set of common PDCCHs according to the corresponding relationship between the TCI state information of the first set of common PDCCHs and the second search space, where the second search space is the search space numbered 0. That is, the TCI state information of the first set of common PDCCHs has a corresponding relationship with the search space numbered 0, and the monitoring occasion information of the first set of common PDCCHs can be determined according to the configuration information of this search space and the corresponding relationship.

[0089] Here, the preset corresponding relationship may be carried by the configuration information or may be agreed upon by the protocol.

[0090] Optionally, the beam information obtaining method further includes: obtaining fifth indication information, where the fifth indication information is used to indicate the first information corresponding to the TCI state information of each terminal on the first set of common PDCCHs;

[0091] The first information includes at least one of the following:

[0092] TCI field, i.e., TCI field;

[0093] The order of TCI status information;

[0094] The bit length of TCI status information;

[0095] DCI size, i.e., DCI size.

[0096] The above-mentioned fifth indication information can be sent by sending network signaling (such as MAC CE signaling).

[0097] Optionally, the beam information acquisition method further includes: for the fifth indication information sent by different transmission and reception points, respectively obtaining the first information corresponding to the TCI status information of the terminal in each of the fifth indication information.

[0098] Here, for the group common PDCCH from different TRPs, the interpretation methods of the TCI status information of the common beams of the downlink and uplink of each terminal can be independent of each other.

[0099] Optionally, in the case where the number of terminals in the terminal group is greater than the number of TCI statuses that the DCI signaling can carry, perform at least one of the following operations:

[0100] Obtain sixth indication information, where the sixth indication information is used to indicate listening to the second group common PDCCH. Here, for the terminals newly added to the terminal group, the sixth indication information indicates that the terminal listens to the second group common PDCCH, that is, the PDCCH on another control resource set (CORESET) and / or search space. That is to say, the CORESET and search space of the second group common PDCCH are different from those of the first group common PDCCH.

[0101] Obtain the number of first TCI statuses configured by the network side device for the first group common PDCCH, where the number of first TCI statuses is greater than or equal to the number of terminals in the terminal group. Here, the number of first TCI statuses configured by the network side device for the first group common PDCCH can satisfy the number of terminals in the terminal group. For example, in the first group common PDCCH, it is extended from 3 bits to 4 bits to support the beam information indication of more terminals. Since the number of TCI states (TCI state) increases, the listening opportunities increase, so that more terminals can be supported.

[0102] Obtain at least two Radio Network Temporary Identity (RNTI) information of the first group of common Physical Downlink Control Channels (PDCCHs). Different terminal groups use different RNTI information. Here, the obtaining method can be obtaining according to network-side configuration or obtaining according to protocol agreement.

[0103] Obtain multiple groups of monitoring opportunities corresponding to the first group of common PDCCHs. When the number of terminals is large, these terminals can be divided into multiple parts, and the Transmit Coordination Information (TCI) status of the first group of common PDCCHs is configured to correspond to multiple groups of monitoring opportunities (such as odd and even monitoring opportunities). Then, terminals in each part can monitor according to different monitoring opportunities corresponding to the TCI status. For example, when the number of terminals increases, the monitoring opportunities of the first group of common PDCCHs are divided into two groups according to odd and even numbers, and different RNTI information is used for transmission respectively. Multiple terminals can determine whether the monitoring opportunity of each terminal for the first group of common PDCCHs is an odd monitoring opportunity or an even monitoring opportunity according to different RNTI information. Among them, the odd and even monitoring opportunities can correspond to the same TCI status.

[0104] Optionally, the beam information obtaining method further includes: obtaining at least two Radio Network Temporary Identity (RNTI) information of the first group of common PDCCHs. Different terminal groups use different RNTI information.

[0105] That is to say, the network-side device can configure multiple RNTI information for the first group of common PDCCHs. In this way, different terminal groups use different RNTI information. Further, for a terminal group with a large number of terminals, the terminal group can be divided into multiple parts (i.e., multiple subgroups), and different subgroups can use different RNTI information respectively.

[0106] The beam information obtaining method of the embodiments of the present application uses the first indication information to indicate the beam information of at least two terminals, so as to achieve the purpose of performing common beam indication on at least two terminals through the first indication information. Furthermore, when the number of terminals is large, signaling overhead can be reduced.

[0107] Such as Figure 3 As shown, the embodiments of the present application further provide a beam information indication method, which is applied to a network-side device and includes:

[0108] Step 301: Send first indication information, where the first indication information is used to indicate the beam information of at least two terminals.

[0109] Here, the above first indication information can perform common beam indication on at least two terminals. That is, the present application can perform common beam indication for the case of a large number of terminals, so as to reduce signaling overhead and ensure the flexibility and robustness of beam indication.

[0110] The beam information indication method according to the embodiments of the present application indicates the beam information of at least two terminals through first indication information, so as to achieve the purpose of performing common beam indication on at least two terminals through the first indication information, and further reduce signaling overhead when the number of terminals is large.

[0111] Optionally, the first indication information is used to indicate the beam information of a terminal group, and the terminal group includes the at least two terminals.

[0112] In the embodiments of the present application, multiple terminals can be grouped, and then the beam information of the terminal group is indicated through the first indication information, so as to achieve the purpose of saving the overhead of control signaling.

[0113] Optionally, the beam information indication method further includes: sending second indication information, where the second indication information is used to indicate the grouping information of the terminal group;

[0114] The second indication information includes the identifier of the terminal group, or the second indication information includes the identifier of the terminal group and the identifier of each terminal in the terminal group.

[0115] Optionally, the sending of the second indication information includes: sending the second indication information through Radio Resource Control (RRC) signaling, Medium Access Control Control Element (MAC CE) signaling, or Downlink Control Information (DCI) signaling. That is, the network side device can use RRC signaling, MAC CE signaling, or DCI signaling to indicate the terminal grouping information to the terminal. Among them, the identifier information of the terminal, such as the C-RNTI of the UE, can be carried in the second indication information.

[0116] Optionally, the beam information indication method further includes: obtaining the beam information in the beam report of the terminal; allocating terminals with the same or similar beam information to the same terminal group; where the similar beam information means that the difference between the spatial reception parameter values of different beam information is less than a preset threshold.

[0117] That is to say, the network side device indicates the terminal grouping based on information such as SSB RI / CRI in the beam reports of each terminal. That is, according to the beam information carried in the beam report, terminals with the same or similar beam information (even with less beam interference) can be grouped into one group.

[0118] Optionally, the first indication information includes at least one of the following:

[0119] The identifier of the terminal group and a beam information; where all terminals in the terminal group can use the same beam information;

[0120] The identifier of at least one terminal and a beam information; where these terminals can use the same one beam information;

[0121] The identifier of a terminal and the corresponding beam information; among which, other terminals can use the beam information of this UE.

[0122] The identifier of at least one terminal and the beam information corresponding to the identifier of each of the terminals.

[0123] Optionally, the sending of the first indication information includes:

[0124] Sending the first indication information through DCI signaling.

[0125] Optionally, the DCI signaling is located on the first set of common physical downlink control channels PDCCH.

[0126] Optionally, the beam information indication method further includes:

[0127] Sending third indication information, where the third indication information is used to indicate the time-frequency information required for monitoring the first set of common PDCCH. Optionally, the above third indication information is sent by the network-side device when at least one terminal state in the terminal group changes (such as moving or rotating, etc.), or when the state change reaches a preset condition (such as the moving distance reaches a preset distance or the rotation angle reaches a predetermined angle).

[0128] Optionally, the third indication information includes at least one of the following:

[0129] The control resource set information corresponding to the first set of common PDCCH;

[0130] The search space information corresponding to the first set of common PDCCH.

[0131] Optionally, the beam information indication method further includes: determining the first beam information used by the first set of common PDCCH. Optionally, the determining of the first beam information used by the first set of common PDCCH includes at least one of the following:

[0132] Determining the first beam information according to the synchronization signal / physical broadcast channel signal block SSB beam information measured by the terminal during initial access and meeting the preset conditions;

[0133] Determining the first beam information according to the fourth indication information;

[0134] After the first time, determining the first beam information according to the fourth indication information;

[0135] Before the first time, determining the first beam information according to the default beam information;

[0136] Wherein, the fourth indication information is used to indicate the transmission configuration indication (TCI) state information of the first group of common PDCCHs.

[0137] Optionally, the beam information indication method further includes: sending the fourth indication information.

[0138] Optionally, when the first beam information is indicated by MAC CE signaling, the first time is the time after the first preset duration for transmitting the ACK information;

[0139] Or, when the first beam information is indicated by a previous DCI, the first time is the moment when the time interval between the PDCCH where the previous DCI is located and the current group of common PDCCHs is greater than or equal to a preset threshold, and the PDCCH where the previous DCI is located is the previous group of common PDCCHs or the previous dedicated PDCCH;

[0140] Or, when the first beam information is indicated by RRC signaling, the first time is the time after the second preset duration for sending the RRC signaling.

[0141] In the embodiments of the present application, the above-mentioned first time can be understood as the effective time of the first beam information. When the first beam information is indicated by different methods, the time represented by the first time is different. For example, when the first beam information is indicated by MAC CE signaling, the first time refers to the time after the first preset duration after the HARQ-ACK of the received MAC CE signaling is ACK, where HARQ-ACK includes ACK and NACK.

[0142] Optionally, the default beam information includes one of the following:

[0143] The SSB beam information measured by the terminal during initial access and meeting the preset conditions;

[0144] The beam information of the CORESET with the smallest CORESET ID in the current cell;

[0145] The current beam information or the original beam information, where the original beam information refers to the beam used before the first time;

[0146] The beam information indicated by the TCI state with a preset identifier in the TCI state pool.

[0147] Optionally, the beam information indication method further includes:

[0148] Sending the configuration information of the first search space, where the configuration information includes the monitoring opportunity information.

[0149] Optionally, the beam information indication method further includes:

[0150] Sending fifth indication information, where the fifth indication information is used to indicate first information corresponding to the TCI state information of each terminal on the first set of common PDCCHs;

[0151] The first information includes at least one of the following:

[0152] TCI domain, that is, TCI field;

[0153] The order of the TCI state information;

[0154] The bit length of the TCI state information;

[0155] DCI size, that is, DCI size.

[0156] Here, the network side device may send the fifth indication information by sending network signaling (such as MAC CE signaling). For the group common PDCCHs from different TRPs, the interpretation methods of the TCI state information of the common beams in the downlink and uplink of each terminal may be independent of each other.

[0157] Optionally, when the number of terminals in the terminal group is greater than the number of TCI states that the DCI signaling can carry, perform at least one of the following operations;

[0158] Sending sixth indication information, where the sixth indication information is used to indicate that a first terminal in the terminal group listens to a second set of common PDCCHs. Here, for a terminal newly added to the terminal group, the sixth indication information indicates that the terminal listens to the second set of common PDCCHs, that is, the PDCCH on another control resource set and / or search space. That is to say, the control resource set and search space of the second set of common PDCCHs are different from those of the first set of common PDCCHs.

[0159] Configuring a first number of TCI states for the first set of common PDCCHs, where the first number of TCI states is greater than or equal to the number of terminals in the terminal group. Here, the first number of TCI states configured by the network side device for the first set of common PDCCHs can satisfy the number of terminals in the terminal group. For example, in the first set of common PDCCHs, it is extended from 3 bits to 4 bits to support the beam information indication of more terminals. Since the number of TCI states (TCI state) increases, the listening opportunities increase, so that more terminals can be supported.

[0160] Configuring at least two radio network temporary identity RNTI information for the first set of common PDCCHs, and different terminal groups use different RNTI information;

[0161] Configure the TCI state of the first set of common PDCCHs to correspond to multiple sets of monitoring opportunities. When the number of terminals is large, these terminals can be divided into multiple parts, and the TCI state of the first set of common PDCCHs is configured to correspond to multiple sets of monitoring opportunities (such as odd and even monitoring opportunities). Then, the terminals in each part can perform monitoring according to the different monitoring opportunities corresponding to the TCI state. For example, when the number of terminals increases, the monitoring opportunities of the first set of common PDCCHs are divided into two groups according to odd and even numbers, and different RNTI information is used for transmission. Multiple terminals can determine whether the monitoring opportunity of the first set of common PDCCHs for each terminal is an odd monitoring opportunity or an even monitoring opportunity according to different RNTI information. Among them, the odd and even monitoring opportunities can correspond to the same TCI state.

[0162] Optionally, the beam information indication method further includes: configuring at least two radio network temporary identity (RNTI) information for the first set of common PDCCHs, and different terminal groups use different RNTI information.

[0163] That is to say, the network side device can configure multiple RNTI information for the first set of common PDCCHs. In this way, different terminal groups use different RNTI information. Further, for a terminal group with a large number of terminals, the terminal group can be divided into multiple parts (i.e., multiple subgroups), and different subgroups can use different RNTI information respectively.

[0164] The beam information indication method of the present application indicates the beam information of at least two terminals through the first indication information, so as to achieve the purpose of common beam indication for at least two terminals through the first indication information. Furthermore, when the number of terminals is large, signaling overhead can be reduced.

[0165] It should be noted that for the beam information acquisition method provided in the embodiments of the present application, the execution subject can be a beam information acquisition device, or a control module in the beam information acquisition device for executing the beam information acquisition method. In the embodiments of the present application, the beam information acquisition method is executed by the beam information acquisition device as an example to illustrate the beam information acquisition device provided in the embodiments of the present application.

[0166] As Figure 4 shown, the embodiments of the present application further provide a beam information acquisition device 400, which is applied to a terminal and includes:

[0167] A first acquisition module 401, configured to acquire first indication information, where the first indication information is used to indicate the beam information of at least two terminals.

[0168] In the beam information acquisition device of the embodiments of the present application, the first indication information is used to indicate the beam information of a terminal group, and the terminal group includes the at least two terminals.

[0169] The beam information acquisition device according to an embodiment of the present application further includes:

[0170] A second acquisition module, configured to acquire second indication information, where the second indication information is used to indicate the grouping information of the terminal group;

[0171] Wherein, the second indication information includes the identifier of the terminal group, or the second indication information includes the identifier of the terminal group and the identifier of each terminal in the terminal group.

[0172] For the beam information acquisition device according to an embodiment of the present application, the first indication information includes at least one of the following:

[0173] The identifier of the terminal group and a beam information;

[0174] The identifier of at least one terminal and a beam information;

[0175] The identifier of one terminal and the corresponding beam information;

[0176] The identifier of at least one terminal and the beam information corresponding to the identifier of each of the terminals.

[0177] For the beam information acquisition device according to an embodiment of the present application, the first acquisition module 401 includes:

[0178] A first acquisition unit, configured to acquire the first indication information through DCI signaling.

[0179] For the beam information acquisition device according to an embodiment of the present application, the DCI signaling is located on the first group of common physical downlink control channels PDCCH.

[0180] The beam information acquisition device according to an embodiment of the present application further includes:

[0181] A third acquisition module, configured to acquire third indication information, where the third indication information is used to indicate the time-frequency information required for monitoring the first group of common PDCCH.

[0182] For the beam information acquisition device according to an embodiment of the present application, the third indication information includes at least one of the following:

[0183] The control resource set information corresponding to the first group of common PDCCH;

[0184] The search space information corresponding to the first group of common PDCCH.

[0185] The beam information acquisition device according to an embodiment of the present application further includes:

[0186] A first determination module, configured to determine the first beam information used by the first group of common PDCCH.

[0187] The beam information acquisition device according to an embodiment of the present application, the first determination module includes at least one of the following:

[0188] The first determination unit is configured to determine the first beam information according to the synchronization signal / physical broadcast channel signal block SSB beam information measured by the terminal when initially accessing and satisfying a preset condition;

[0189] The second determination unit is configured to determine the first beam information according to the fourth indication information;

[0190] The third determination unit is configured to determine the first beam information according to the fourth indication information after a first time;

[0191] The fourth determination unit is configured to determine the first beam information according to the default beam information before a first time;

[0192] Wherein, the fourth indication information is used to indicate the transmission configuration indication TCI state information of the first set of common PDCCH.

[0193] The beam information acquisition device according to an embodiment of the present application further includes:

[0194] The second determination module is configured to determine the monitoring opportunity information of the first set of common PDCCH according to the TCI state information of the first set of common PDCCH.

[0195] The beam information acquisition device according to an embodiment of the present application, the second determination module includes:

[0196] The fifth determination unit is configured to obtain the configuration information of the first search space, the configuration information includes monitoring opportunity information; determine the monitoring opportunity information of the first set of common PDCCH according to the TCI state information of the first set of common PDCCH and a preset correspondence relationship, the preset correspondence relationship is the correspondence relationship between the monitoring opportunity information and the TCI state information of the group common PDCCH, and one TCI state information corresponds to at least one monitoring opportunity information;

[0197] The sixth determination unit is configured to determine the synchronization signal / physical broadcast channel signal block SSB according to the source reference signal RS in the TCI state information of the first set of common PDCCH; determine the monitoring opportunity information of the first set of common PDCCH according to the parameter information of the SSB;

[0198] The seventh determination unit is configured to determine the monitoring opportunity information of the first set of common PDCCH according to the correspondence relationship between the TCI state information of the first set of common PDCCH and the second search space, and the second search space is the search space numbered 0.

[0199] The beam information acquisition device according to an embodiment of the present application further includes:

[0200] A fourth acquisition module, configured to acquire fifth indication information, where the fifth indication information is used to indicate first information corresponding to the TCI state information of each terminal on each first group of common PDCCHs;

[0201] The first information includes at least one of the following:

[0202] TCI field;

[0203] The order of the TCI state information;

[0204] The bit length of the TCI state information;

[0205] DCI size.

[0206] The beam information acquisition device according to an embodiment of the present application further includes:

[0207] A fifth acquisition module, configured to respectively acquire, for the fifth indication information sent by different transmission and reception points, the first information corresponding to the TCI state information of the terminal in each fifth indication information.

[0208] In the beam information acquisition device according to an embodiment of the present application, when the first beam information is indicated by a MAC CE signaling, the first time is the time after a first preset duration of the ACK information for transmitting the MAC CE signaling;

[0209] Alternatively, when the first beam information is indicated by a previous DCI, the first time is the moment when the time interval between the PDCCH where the previous DCI is located and the current group of common PDCCHs is greater than or equal to a preset threshold, and the PDCCH where the previous DCI is located is the previous group of common PDCCH or the previous dedicated PDCCH;

[0210] Alternatively, when the first beam information is indicated by an RRC signaling, the first time is the time after a second preset duration of receiving the RRC signaling.

[0211] In the beam information acquisition device according to an embodiment of the present application, the default beam information includes one of the following:

[0212] The SSB beam information measured by the terminal during initial access and meeting a preset condition;

[0213] The beam information of the CORESET with the smallest CORESET ID in the current cell;

[0214] The current beam information or the original beam information, where the original beam information refers to the beam used before the first time;

[0215] The beam information indicated by the TCI state with a preset identifier in the TCI state pool.

[0216] The beam information acquisition device according to the embodiment of the present application, when the number of terminals in the terminal group is greater than the number of TCI states that the DCI signaling can carry, performs at least one of the following operations:

[0217] Obtain sixth indication information, where the sixth indication information is used to indicate monitoring the second group of common PDCCHs;

[0218] Obtain the number of first TCI states configured by the network side device for the first group of common PDCCHs, where the number of first TCI states is greater than or equal to the number of terminals in the terminal group;

[0219] Obtain at least two radio network temporary identity (RNTI) information of the first group of common PDCCHs, and different terminal groups use different RNTI information;

[0220] Obtain multiple groups of monitoring opportunities corresponding to the first group of common PDCCHs.

[0221] The beam information acquisition device according to the embodiment of the present application further includes:

[0222] A sixth acquisition module, configured to obtain at least two radio network temporary identity (RNTI) information of the first group of common PDCCHs, and different terminal groups use different RNTI information.

[0223] The beam information acquisition device according to the embodiment of the present application indicates the beam information of at least two terminals through first indication information, so as to achieve the purpose of performing common beam indication on at least two terminals through the first indication information, and further reduce signaling overhead when the number of terminals is large.

[0224] The beam information acquisition device in the embodiment of the present application can be a device, or a component, an integrated circuit, or a chip in a terminal. The device can be a mobile terminal or a non-mobile terminal. Exemplarily, the mobile terminal may include, but is not limited to, the types of the above-listed terminal 11, and the non-mobile terminal may be a server, a network attached storage (NAS), a personal computer (PC), a television (TV), a teller machine, or a self-service machine, etc., which are not specifically limited in the embodiment of the present application.

[0225] The beam information acquisition device in the embodiments of the present application can be a device with an operating system. The operating system can be the Android operating system, the iOS operating system, or other possible operating systems, which are not specifically limited in the embodiments of the present application.

[0226] The beam information acquisition device provided in the embodiments of the present application can implement Figure 2 all the processes implemented by the method embodiments and achieve the same technical effects. To avoid repetition, they will not be elaborated here.

[0227] Optionally, as Figure 5 shown, the embodiments of the present application further provide a communication device 500, including a processor 501, a memory 502, and a program or instruction stored on the memory 502 and executable on the processor 501. For example, when the communication device 500 is a terminal, when the program or instruction is executed by the processor 501, it implements all the processes of the above-mentioned beam information acquisition method embodiments applied to the terminal and can achieve the same technical effects. When the communication device 500 is a network-side device, when the program or instruction is executed by the processor 501, it implements all the processes of the above-mentioned beam information indication method embodiments applied to the network device side and can achieve the same technical effects. To avoid repetition, they will not be elaborated here.

[0228] Figure 6 It is a schematic diagram of the hardware structure of a terminal for implementing the embodiments of the present application.

[0229] The terminal 600 includes, but is not limited to: a radio frequency unit 601, a network module 602, an audio output unit 603, an input unit 604, a sensor 605, a display unit 606, a user input unit 607, an interface unit 608, a memory 609, and a processor 610 and other components.

[0230] Those skilled in the art can understand that the terminal 600 may further include a power source (such as a battery) for supplying power to each component. The power source can be logically connected to the processor 610 through a power management system, so as to implement functions such as management of charging, discharging, and power consumption management through the power management system. Figure 6 The terminal structure shown in [] does not limit the terminal. The terminal may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0231] It should be understood that in the embodiments of the present application, the input unit 604 may include a Graphics Processing Unit (GPU) 6041 and a microphone 6042. The GPU 6041 processes the image data of static pictures or videos obtained by an image capture device (such as a camera) in the video capture mode or the image capture mode. The display unit 606 may include a display panel 6061, and the display panel 6061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 607 includes a touch panel 6071 and other input devices 6072. The touch panel 6071 is also called a touch screen. The touch panel 6071 may include two parts: a touch detection device and a touch controller. The other input devices 6072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, power on / off keys, etc.), a trackball, a mouse, a joystick, which will not be elaborated here.

[0232] In the embodiments of the present application, after receiving the downlink data from the network side device, the radio frequency unit 601 sends it to the processor 610 for processing; in addition, it sends the uplink data to the network side device. Generally, the radio frequency unit 601 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.

[0233] The memory 609 can be used to store software programs or instructions and various data. The memory 609 mainly includes a program or instruction storage area and a data storage area. Among them, the program or instruction storage area can store an operating system, applications or instructions required for at least one function (such as a sound playback function, an image playback function, etc.), etc. In addition, the memory 609 may include a high-speed random access memory, and may also include a non-volatile memory. Among them, the non-volatile memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash memory. For example, at least one disk storage device, a flash memory device, or other non-volatile solid state storage devices.

[0234] The processor 610 may include one or more processing units; optionally, the processor 610 may integrate an application processor and a modem processor. Among them, the application processor mainly processes the operating system, user interface, applications or instructions, etc., and the modem processor mainly processes wireless communications, such as a baseband processor. It can be understood that the above-mentioned modem processor may not be integrated into the processor 610 either.

[0235] Among them, the radio frequency unit 601 is used to obtain first indication information, and the first indication information is used to indicate beam information of at least two terminals.

[0236] In the terminal according to the embodiment of the present application, the beam information of at least two terminals is indicated by the first indication information, so that the purpose of common beam indication for at least two terminals can be achieved through the first indication information, and further, when the number of terminals is large, signaling overhead can be reduced.

[0237] Optionally, the first indication information is used to indicate beam information of a terminal group, and the terminal group includes the at least two terminals.

[0238] Optionally, the radio frequency unit 601 is further used to obtain second indication information, and the second indication information is used to indicate grouping information of the terminal group;

[0239] Among them, the second indication information includes an identifier of the terminal group, or the second indication information includes an identifier of the terminal group and an identifier of each terminal in the terminal group.

[0240] Optionally, the first indication information includes at least one of the following:

[0241] An identifier of the terminal group and a beam information;

[0242] Identifiers of at least one terminal and a beam information;

[0243] An identifier of a terminal and corresponding beam information;

[0244] Identifiers of at least one terminal and beam information corresponding to identifiers of each of the terminals.

[0245] Optionally, the obtaining of the first indication information includes:

[0246] Obtaining the first indication information through DCI signaling.

[0247] Optionally, the DCI signaling is located on a first set of common physical downlink control channels PDCCH.

[0248] Optionally, the radio frequency unit 601 is further used to obtain third indication information, and the third indication information is used to indicate time-frequency information required for monitoring the first set of common PDCCH.

[0249] Optionally, the third indication information includes at least one of the following:

[0250] Control resource set information corresponding to the first set of common PDCCH;

[0251] Search space information corresponding to the first set of common PDCCH.

[0252] Optionally, a processor 610 is configured to determine first beam information used by the first set of common PDCCHs.

[0253] Optionally, the determining of the first beam information used by the first set of common PDCCHs includes at least one of the following:

[0254] Determining the first beam information according to the synchronization signal / physical broadcast channel signal block SSB beam information measured by the terminal during initial access and satisfying a preset condition;

[0255] Determining the first beam information according to fourth indication information;

[0256] After a first time, determining the first beam information according to the fourth indication information;

[0257] Before the first time, determining the first beam information according to default beam information;

[0258] Wherein, the fourth indication information is used to indicate transmission configuration indication TCI state information of the first set of common PDCCHs.

[0259] Optionally, the processor 610 is further configured to determine monitoring occasion information of the first set of common PDCCHs according to the TCI state information of the first set of common PDCCHs.

[0260] Optionally, the determining of the monitoring occasion information of the first set of common PDCCHs according to the TCI state information of the first set of common PDCCHs includes:

[0261] Obtaining configuration information of a first search space, where the configuration information includes monitoring occasion information; determining the monitoring occasion information of the first set of common PDCCHs according to the TCI state information of the first set of common PDCCHs and a preset corresponding relationship, where the preset corresponding relationship is a corresponding relationship between monitoring occasion information and TCI state information of group common PDCCHs, and one TCI state information corresponds to at least one monitoring occasion information;

[0262] Alternatively, determining a synchronization signal / physical broadcast channel signal block SSB according to a source reference signal RS in the TCI state information of the first set of common PDCCHs; determining the monitoring occasion information of the first set of common PDCCHs according to parameter information of the SSB;

[0263] Alternatively, determining the monitoring occasion information of the first set of common PDCCHs according to a corresponding relationship between the TCI state information of the first set of common PDCCHs and a second search space, where the second search space is a search space numbered 0.

[0264] Optionally, the radio frequency unit 601 is further configured to obtain fifth indication information, where the fifth indication information is used to indicate first information corresponding to the TCI state information of each terminal on the first set of common PDCCHs;

[0265] The first information includes at least one of the following:

[0266] TCI field;

[0267] Order of the TCI state information;

[0268] Bit length of the TCI state information;

[0269] DCI size.

[0270] Optionally, the processor 610 is further configured to, for the fifth indication information sent by different transmit-receive points, respectively obtain the first information corresponding to the TCI state information of the terminal in each fifth indication information.

[0271] Optionally, when the first beam information is indicated by MAC CE signaling, the first time is the time after a first preset duration of the ACK information for transmitting the MAC CE signaling;

[0272] Alternatively, when the first beam information is indicated by a previous DCI, the first time is the moment when the time interval between the PDCCH where the previous DCI is located and the current set of common PDCCHs is greater than or equal to a preset threshold, and the PDCCH where the previous DCI is located is the previous set of common PDCCH or the previous dedicated PDCCH;

[0273] Alternatively, when the first beam information is indicated by RRC signaling, the first time is the time after a second preset duration of receiving the RRC signaling.

[0274] Optionally, the default beam information includes one of the following:

[0275] SSB beam information measured by the terminal during initial access and meeting a preset condition;

[0276] Beam information of the CORESET with the smallest CORESET ID in the current cell;

[0277] Current beam information or original beam information, where the original beam information refers to the beam used before the first time;

[0278] Beam information indicated by the TCI state with a preset identifier in the TCI state pool.

[0279] Optionally, the processor 610 is further configured to perform at least one of the following operations when the number of terminals in the terminal group is greater than the number of TCI states that the DCI signaling can carry:

[0280] Obtain sixth indication information, where the sixth indication information is used to indicate listening to the second group of common PDCCHs;

[0281] Obtain the number of first TCI states configured by the network side device for the first group of common PDCCHs, where the number of first TCI states is greater than or equal to the number of terminals in the terminal group;

[0282] Obtain at least two radio network temporary identity (RNTI) information of the first group of common PDCCHs, where different terminal groups use different RNTI information;

[0283] Obtain multiple sets of monitoring opportunities corresponding to the first group of common PDCCHs.

[0284] Optionally, the radio frequency unit 601 is further configured to obtain at least two radio network temporary identity (RNTI) information of the first group of common PDCCHs, where different terminal groups use different RNTI information.

[0285] The terminal according to the embodiment of the present application indicates the beam information of at least two terminals through the first indication information, so as to achieve the purpose of performing common beam indication on at least two terminals through the first indication information, and further reduce signaling overhead when the number of terminals is large.

[0286] As Figure 7 shown, the embodiment of the present application further provides a beam information indication device 700, which is applied to a network side device and includes:

[0287] A first sending module 701, configured to send first indication information, where the first indication information is used to indicate the beam information of at least two terminals.

[0288] In the beam information indication device according to the embodiment of the present application, the first indication information is used to indicate the beam information of a terminal group, and the terminal group includes the at least two terminals.

[0289] The beam information indication device according to the embodiment of the present application further includes:

[0290] A second sending module, configured to send second indication information, where the second indication information is used to indicate the grouping information of the terminal group;

[0291] The second indication information includes an identifier of the terminal group, or the second indication information includes an identifier of the terminal group and an identifier of each terminal in the terminal group.

[0292] The beam information indication device according to an embodiment of the present application further includes:

[0293] A seventh acquisition module, configured to acquire beam information in a beam report of the terminal;

[0294] A first grouping module, configured to allocate terminals with the same or similar beam information to the same terminal group;

[0295] Wherein, the similar beam information means that the difference between the spatial reception parameter values of different beam information is less than a preset threshold.

[0296] For the beam information indication device according to an embodiment of the present application, the first indication information includes at least one of the following:

[0297] A terminal group identifier and a beam information;

[0298] Identifiers of at least one terminal and a beam information;

[0299] An identifier of a terminal and the corresponding beam information;

[0300] Identifiers of at least one terminal and beam information corresponding to each identifier of the terminal.

[0301] For the beam information indication device according to an embodiment of the present application, the first sending module 701 includes:

[0302] A first sending unit, configured to send the first indication information through DCI signaling.

[0303] For the beam information indication device according to an embodiment of the present application, the DCI signaling is located on the first group of common physical downlink control channels PDCCH.

[0304] The beam information indication device according to an embodiment of the present application further includes:

[0305] A third sending module, configured to send third indication information, where the third indication information is used to indicate time-frequency information required for monitoring the first group of common PDCCH.

[0306] For the beam information indication device according to an embodiment of the present application, the third indication information includes at least one of the following:

[0307] Control resource set information corresponding to the first group of common PDCCH;

[0308] Search space information corresponding to the first group of common PDCCH.

[0309] The beam information indication device according to an embodiment of the present application further includes:

[0310] A third determination module, configured to determine first beam information used by the first group of common PDCCH.

[0311] The beam information indicating device according to an embodiment of the present application, wherein the third determination module includes at least one of the following:

[0312] An eighth determination unit, configured to determine the first beam information according to the synchronization signal / physical broadcast channel signal block SSB beam information measured by the terminal at initial access and satisfying a preset condition;

[0313] A ninth determination unit, configured to determine the first beam information according to the fourth indication information;

[0314] A tenth determination unit, configured to determine the first beam information according to the fourth indication information after a first time;

[0315] An eleventh determination unit, configured to determine the first beam information according to the default beam information before the first time;

[0316] Wherein, the fourth indication information is used to indicate the transmission configuration indication TCI state information of the first group of common PDCCHs.

[0317] The beam information indicating device according to an embodiment of the present application further includes:

[0318] A fourth sending module, configured to send the fourth indication information.

[0319] In the beam information indicating device according to an embodiment of the present application, when the first beam information is indicated by a MAC CE signaling, the first time is the time after a first preset duration of transmitting the ACK information of the MAC CE signaling;

[0320] Alternatively, when the first beam information is indicated by a previous DCI, the first time is the moment when the time interval between the PDCCH where the previous DCI is located and the current group of common PDCCHs is greater than or equal to a preset threshold, and the PDCCH where the previous DCI is located is the previous group of common PDCCHs or the previous dedicated PDCCH;

[0321] Alternatively, when the first beam information is indicated by an RRC signaling, the first time is the time after a second preset duration of sending the RRC signaling.

[0322] The beam information indicating device according to an embodiment of the present application, wherein the default beam information includes one of the following:

[0323] The SSB beam information measured by the terminal at initial access and satisfying a preset condition;

[0324] The beam information of the CORESET with the smallest CORESET ID in the current cell;

[0325] Current beam information or original beam information, where the original beam information refers to the beam used before the first time;

[0326] Beam information indicated by a TCI state with a preset identifier in the TCI state pool.

[0327] The beam information indicating device according to an embodiment of the present application further includes:

[0328] A fifth sending module, configured to send configuration information of a first search space, where the configuration information includes monitoring occasion information.

[0329] The beam information indicating device according to an embodiment of the present application further includes:

[0330] A sixth sending module, configured to send fifth indication information, where the fifth indication information is used to indicate first information corresponding to TCI state information of each terminal on the first group of common PDCCHs;

[0331] The first information includes at least one of the following:

[0332] TCI field;

[0333] Order of TCI state information;

[0334] Bit length of TCI state information;

[0335] DCI size.

[0336] When the number of terminals in the terminal group is greater than the number of TCI states that the DCI signaling can carry, the beam information indicating device according to an embodiment of the present application performs at least one of the following operations;

[0337] Send sixth indication information, where the sixth indication information is used to indicate that a first terminal in the terminal group monitors a second group of common PDCCHs;

[0338] Configure a first number of TCI states for the first group of common PDCCHs, where the first number of TCI states is greater than or equal to the number of terminals in the terminal group;

[0339] Configure at least two radio network temporary identity (RNTI) information for the first group of common PDCCHs, and different terminal groups use different RNTI information;

[0340] Configure multiple groups of monitoring occasions corresponding to the TCI states of the first group of common PDCCHs.

[0341] The beam information indicating device according to an embodiment of the present application further includes:

[0342] A first configuration module, configured to configure at least two radio network temporary identity (RNTI) information for the first group of common PDCCHs, where different terminal groups use different RNTI information.

[0343] In the beam information indicating device according to the embodiment of the present application, the beam information of at least two terminals is indicated by the first indication information, so that the purpose of performing common beam indication on at least two terminals through the first indication information can be achieved. Furthermore, when the number of terminals is relatively large, signaling overhead can be reduced.

[0344] Specifically, the embodiment of the present application further provides a network-side device. As Figure 8 shown, the network-side device 800 includes: an antenna 801, a radio frequency device 802, and a baseband device 803. The antenna 801 is connected to the radio frequency device 802. In the uplink direction, the radio frequency device 802 receives information through the antenna 801 and sends the received information to the baseband device 803 for processing. In the downlink direction, the baseband device 803 processes the information to be sent and sends it to the radio frequency device 802. After processing the received information, the radio frequency device 802 sends it out through the antenna 81.

[0345] The above frequency band processing device may be located in the baseband device 803. The method executed by the network-side device in the above embodiments may be implemented in the baseband device 803. The baseband device 803 includes a processor 804 and a memory 805.

[0346] The baseband device 803 may include, for example, at least one baseband board, and a plurality of chips are arranged on the baseband board. As Figure 8 shown, one of the chips is, for example, the processor 804, which is connected to the memory 805 to call the program in the memory 805 and execute the operations of the network-side device shown in the above method embodiments.

[0347] The baseband device 803 may further include a network interface 806 for interacting with the radio frequency device 802. The interface is, for example, a common public radio interface (CPRI for short).

[0348] Specifically, the network-side device according to the embodiment of the present invention further includes: instructions or programs stored on the memory 805 and executable on the processor 804. The processor 804 calls the instructions or programs in the memory 805 to execute Figure 7 the methods executed by the modules shown, and achieves the same technical effects. To avoid repetition, details are not described herein.

[0349] An embodiment of the present application further provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, it implements each process of the above-mentioned embodiment of the beam information acquisition method or the embodiment of the beam information indication method, and can achieve the same technical effect. To avoid repetition, it will not be elaborated here.

[0350] Wherein, the processor is the processor in the terminal described in the above embodiment. The readable storage medium includes a computer-readable storage medium, such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disc, etc.

[0351] Another embodiment of the present application provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run a network-side device program or instruction to implement each process of the above-mentioned embodiment of the beam information acquisition method or the embodiment of the beam information indication method, and can achieve the same technical effect. To avoid repetition, it will not be elaborated here.

[0352] It should be understood that the chip mentioned in the embodiment of the present application may also be referred to as a system-on-chip, a system chip, a chip system, or a system-on-chip, etc.

[0353] It should be noted that in this article, the term "including", "comprising" or any other variant thereof is intended to cover a non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the phrase "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in a reverse order according to the functions involved. For example, the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0354] Through the description of the above embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus a necessary general hardware platform. Of course, they can also be implemented by hardware, but in many cases, the former is a better implementation. Based on such an understanding, the technical solution of the present application, 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 for causing a terminal (which can be a mobile phone, computer, server, or network-side device, etc.) to execute the methods described in various embodiments of the present application.

[0355] The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all of them belong to the protection scope of the present application.

Claims

1. A beam information acquisition method, applied to a terminal, characterized in that, Including: Obtaining first indication information, where the first indication information is used to indicate beam information of a terminal group, and the terminal group includes at least two terminals; The method further includes: Obtaining second indication information, where the second indication information is used to indicate grouping information of the terminal group; Wherein, the second indication information includes an identifier of the terminal group, or the second indication information includes an identifier of the terminal group and an identifier of each terminal in the terminal group; Wherein, the first indication information includes at least one of the following: An identifier of the terminal group and one beam information; Identifiers of at least one terminal and one beam information; An identifier of one terminal and corresponding beam information; Identifiers of at least one terminal and beam information corresponding to the identifier of each of the terminals; Wherein, the obtaining of the first indication information includes: Obtaining the first indication information through DCI signaling.

2. The method according to claim 1, wherein The DCI signaling is located on a first set of common physical downlink control channels PDCCH.

3. The method according to claim 2, characterized in that, It further includes: Obtaining third indication information, where the third indication information is used to indicate time-frequency information required for monitoring the first set of common PDCCH.

4. The method according to claim 3, wherein The third indication information includes at least one of the following: Control resource set information corresponding to the first set of common PDCCH; Search space information corresponding to the first set of common PDCCH.

5. The method according to claim 2, characterized in that It further includes: Determining first beam information used by the first set of common PDCCH.

6. The method according to claim 5, wherein The determining of the first beam information used by the first set of common PDCCH includes at least one of the following: Determining the first beam information according to the synchronization signal / physical broadcast channel signal block SSB beam information measured by the terminal during initial access and meeting a preset condition; Determining the first beam information according to fourth indication information; After a first time, determining the first beam information according to the fourth indication information; Before the first time, determining the first beam information according to default beam information; Wherein, the fourth indication information is used to indicate transmission configuration indication TCI state information of the first set of common PDCCH.

7. The method according to claim 6, characterized in that It further includes: Determining monitoring opportunity information of the first set of common PDCCH according to the TCI state information of the first set of common PDCCH.

8. The method according to claim 7, wherein The determining of the monitoring opportunity information of the first set of common PDCCH according to the TCI state information of the first set of common PDCCH includes: Obtaining configuration information of a first search space, where the configuration information includes monitoring opportunity information; determining the monitoring opportunity information of the first set of common PDCCH according to the TCI state information of the first set of common PDCCH and a preset corresponding relationship, where the preset corresponding relationship is a corresponding relationship between monitoring opportunity information and TCI state information of group common PDCCH, and one TCI state information corresponds to at least one monitoring opportunity information; Or, determining a synchronization signal / physical broadcast channel signal block SSB according to a source reference signal RS in the TCI state information of the first set of common PDCCH; determining the monitoring opportunity information of the first set of common PDCCH according to parameter information of the SSB; Alternatively, according to the correspondence between the TCI state information of the first set of common PDCCHs and the second search space, determine the monitoring occasion information of the first set of common PDCCHs, where the second search space is the search space numbered 0.

9. The method according to claim 2, characterized in that, It further includes: Obtain fifth indication information, where the fifth indication information is used to indicate first information corresponding to the TCI state information of each terminal on the first set of common PDCCHs; The first information includes at least one of the following: TCI field; Order of TCI state information; Bit length of TCI state information; DCI size.

10. The method according to claim 9, wherein It further includes: For the fifth indication information sent by different transmission and reception points, respectively obtain the first information corresponding to the TCI state information of the terminal in each fifth indication information.

11. The method according to claim 6, wherein When the first beam information is indicated by MAC CE signaling, the first time is the time after a first preset duration of transmitting the ACK information of the MAC CE signaling; Alternatively, when the first beam information is indicated by a previous DCI, the first time is the moment when the time interval between the PDCCH where the previous DCI is located and the current set of common PDCCHs is greater than or equal to a preset threshold, and the PDCCH where the previous DCI is located is the previous set of common PDCCHs or the previous dedicated PDCCH; Alternatively, when the first beam information is indicated by RRC signaling, the first time is the time after a second preset duration of receiving the RRC signaling.

12. The method according to claim 6, wherein The default beam information includes one of the following: SSB beam information measured by the terminal at initial access and meeting preset conditions; Beam information of the CORESET with the smallest CORESET ID in the current cell; Current beam information or original beam information, where the original beam information refers to the beam used before the first time; Beam information indicated by the TCI state with a preset identifier in the TCI state pool.

13. The method according to claim 2, wherein When the number of terminals in the terminal group is greater than the number of TCI states that the DCI signaling can carry, perform at least one of the following operations: Obtain sixth indication information, where the sixth indication information is used to indicate monitoring of the second set of common PDCCHs; Obtain the number of first TCI states configured by the network side device for the first set of common PDCCHs, where the number of first TCI states is greater than or equal to the number of terminals in the terminal group; Obtain at least two radio network temporary identity RNTI information of the first set of common PDCCHs, and different terminal groups use different RNTI information; Obtain multiple sets of monitoring occasions corresponding to the first set of common PDCCHs.

14. The method according to claim 6, wherein It further includes: Obtain at least two radio network temporary identity RNTI information of the first set of common PDCCHs, and different terminal groups use different RNTI information.

15. A beam information indication method, applied to a network-side device, characterized in that, It includes: Send first indication information, where the first indication information is used to indicate the beam information of the terminal group, and the terminal group includes at least two terminals; The method further includes: Send a second indication message, where the second indication message is used to indicate the grouping information of the terminal group; The second indication message includes an identifier of the terminal group, or the second indication message includes an identifier of the terminal group and an identifier of each terminal within the terminal group; Wherein, the first indication message includes at least one of the following: A terminal group identifier and a beam information; Identifiers of at least one terminal and a beam information; An identifier of a terminal and a corresponding beam information; Identifiers of at least one terminal and beam information corresponding to the identifier of each of the terminals; Wherein, the sending of the first indication message includes: Send the first indication message through DCI signaling.

16. The method according to claim 15, wherein Further includes: Obtain the beam information in the beam report of the terminal; Allocate terminals with the same or similar beam information to the same terminal group; Wherein, the similar beam information means that the difference between the spatial reception parameter values of different beam information is less than a preset threshold.

17. The method according to claim 15, wherein The DCI signaling is located on the first set of common physical downlink control channels PDCCH.

18. The method according to claim 17, characterized in that, Further includes: Send a third indication message, where the third indication message is used to indicate the time-frequency information required for monitoring the first set of common PDCCH.

19. The method according to claim 18, wherein The third indication message includes at least one of the following: Control resource set information corresponding to the first set of common PDCCH; Search space information corresponding to the first set of common PDCCH.

20. The method according to claim 17, wherein Further includes: Determine a first beam information used by the first set of common PDCCH.

21. The method according to claim 20, wherein The determining of the first beam information used by the first set of common PDCCH includes at least one of the following: Determine the first beam information according to the synchronization signal / physical broadcast channel signal block SSB beam information measured by the terminal at initial access and meeting the preset conditions; Determine the first beam information according to a fourth indication message; After a first time, determine the first beam information according to the fourth indication message; Before the first time, determine the first beam information according to the default beam information; Wherein, the fourth indication message is used to indicate the transmission configuration indication TCI state information of the first set of common PDCCH.

22. The method according to claim 21, characterized in that, Further includes: Send the fourth indication message.

23. The method according to claim 21, wherein In the case where the first beam information is indicated by MAC CE signaling, the first time is the time after a first preset duration of transmitting the ACK information of the MAC CE signaling; Or, in the case where the first beam information is indicated by a previous DCI, the first time is the moment when the time interval between the PDCCH where the previous DCI is located and the current group common PDCCH is greater than or equal to a preset threshold, and the PDCCH where the previous DCI is located is a previous group common PDCCH or a previous dedicated PDCCH; Or, in the case where the first beam information is indicated by RRC signaling, the first time is the time after a second preset duration of sending the RRC signaling.

24. The method according to claim 21, wherein The default beam information includes one of the following: The SSB beam information measured by the terminal at initial access and meeting the preset conditions; Beam information of the CORESET with the smallest CORESET ID in the current cell; Current beam information or original beam information, where the original beam information refers to the beam used before the first time; Beam information indicated by the TCI state with a preset identifier in the TCI state pool.

25. The method according to claim 22, wherein Further includes: Send the configuration information of the first search space, where the configuration information includes monitoring occasion information.

26. The method according to claim 17, characterized in that, Further includes: Send the fifth indication information, where the fifth indication information is used to indicate the first information corresponding to the TCI state information of each terminal on the first group of common PDCCHs; The first information includes at least one of the following: TCI field; Order of TCI state information; Bit length of TCI state information; DCI size.

27. The method according to claim 17, wherein When the number of terminals in the terminal group is greater than the number of TCI states that the DCI signaling can carry, perform at least one of the following operations; Send the sixth indication information, where the sixth indication information is used to indicate that the first terminal in the terminal group monitors the second group of common PDCCHs; Configure the first number of TCI states for the first group of common PDCCHs, where the first number of TCI states is greater than or equal to the number of terminals in the terminal group; Configure at least two radio network temporary identity (RNTI) information for the first group of common PDCCHs, and different terminal groups use different RNTI information; Configure multiple groups of monitoring occasions corresponding to the TCI states of the first group of common PDCCHs.

28. The method according to claim 17, wherein Further includes: Configure at least two radio network temporary identity (RNTI) information for the first group of common PDCCHs, and different terminal groups use different RNTI information.

29. A beam information acquisition device, applied to a terminal, characterized in that, Includes: The first acquisition module is used to acquire the first indication information, where the first indication information is used to indicate the beam information of the terminal group, and the terminal group includes at least two terminals; The device further includes: The second acquisition module is used to acquire the second indication information, where the second indication information is used to indicate the grouping information of the terminal group; Wherein, the second indication information includes the identifier of the terminal group, or the second indication information includes the identifier of the terminal group and the identifier of each terminal in the terminal group; Wherein, the first indication information includes at least one of the following: The identifier of the terminal group and one beam information; The identifier of at least one terminal and one beam information; The identifier of one terminal and the corresponding beam information; The identifier of at least one terminal and the beam information corresponding to the identifier of each terminal; Wherein, the first acquisition module is used for: Acquire the first indication information through DCI signaling.

30. A terminal, characterized in that, Includes a processor, a memory, and a program or instruction stored on the memory and executable on the processor. When the program or instruction is executed by the processor, it implements the steps of the beam information acquisition method according to any one of claims 1 to 14.

31. A beam information indication device, applied to a network-side device, characterized in that Includes: The first sending module is used to send the first indication information, where the first indication information is used to indicate the beam information of the terminal group, and the terminal group includes at least two terminals; The device further includes: The second sending module is used to send the second indication information, where the second indication information is used to indicate the grouping information of the terminal group; The second indication information includes an identifier of a terminal group, or the second indication information includes an identifier of a terminal group and an identifier of each terminal in the terminal group; Among them, the first indication information includes at least one of the following: A terminal group identifier and a beam information; Identifiers of at least one terminal and a beam information; An identifier of a terminal and corresponding beam information; Identifiers of at least one terminal and beam information corresponding to the identifier of each of the terminals; Among them, the first sending module is configured to: Send the first indication information through DCI signaling.

32. A network-side device, characterized in that, Comprising a processor, a memory, and a program or instruction stored on the memory and executable on the processor, the program or instruction, when executed by the processor, implements the steps of the beam information indication method according to any one of claims 15 to 28.

33. A readable storage medium, characterized in that, The program or instruction is stored on the readable storage medium, and when the program or instruction is executed by the processor, it implements the steps of the beam information acquisition method according to any one of claims 1 to 14 or the steps of the beam information indication method according to any one of claims 15 to 28.

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