Communication method and communication device

Abstract

Provided are a communication method and a communication device, the method comprising: a terminal device receiving a first beam failure recovery acknowledgement from a network device, the first beam failure recovery acknowledgement being used for agreeing a beam failure recovery request for an ith transmit receive point (TRP) in M TRPs, the terminal equipment is configured and / or indicates a unified transmission configuration indication unifiedTCI state, M is a positive integer greater than or equal to 1, and i is a positive integer less than or equal to M; and the terminal device performs beam failure recovery on the ith TRP. According to the method in the embodiment of the invention, multi-TRP beam failure recovery can be realized.

Description

Communication method and communication device Technical Field

[0001] The present application relates to the field of communication technology, and more specifically, to a communication method and a communication device. Background Art

[0002] With the advancement of communication technology, some communication systems have introduced the unified transmission configuration indication (TCI) state to implement unified beam indication and transmission for both uplink and downlink. However, it is currently unclear how a terminal device configured and / or indicating the unified TCI state performs beam failure recovery (BFR) in a multi-TRP (multiple transmission reception point) scenario.

[0003] Summary of the Invention

[0004] The embodiments of the present application provide a communication method and a communication device. The following describes various aspects of the embodiments of the present application.

[0005] In a first aspect, a communication method is provided, including: a terminal device receives a first beam failure recovery confirmation from a network device, the first beam failure recovery confirmation being used to agree to a beam failure recovery request for an i-th transmission receiving point TRP among M transmission receiving points TRPs, the terminal device being configured and / or indicating a unified transmission configuration indication unified TCI state, M being a positive integer greater than or equal to 1, and i being a positive integer less than or equal to M; the terminal device performs beam failure recovery on the i-th TRP.

[0006] According to a second aspect, a communication method is provided, including: a network device sends a first beam failure recovery confirmation to a terminal device, wherein the first beam failure recovery confirmation is used to agree to a beam failure recovery request for the i-th TRP among M transmission receiving points TRP, and the terminal device is configured and / or indicates a unified transmission configuration indication unified TCI state, M is a positive integer greater than or equal to 1, and i is a positive integer less than or equal to M.

[0007] According to a third aspect, a communication device is provided, comprising: a receiving unit for receiving a first beam failure recovery confirmation from a network device, wherein the first beam failure recovery confirmation is used to agree to a beam failure recovery request for the i-th TRP among M transmission receiving points TRPs, and the device is configured and / or indicates a unified transmission configuration indication unified TCI state, M is a positive integer greater than or equal to 1, and i is a positive integer less than or equal to M; and a recovery unit for performing beam failure recovery on the i-th TRP.

[0008] In a fourth aspect, a communication device is provided, including: a sending unit for sending a first beam failure recovery confirmation to a terminal device, wherein the first beam failure recovery confirmation is used to agree to a beam failure recovery request for the i-th TRP among M transmission receiving points TRP, and the terminal device is configured and / or indicates a unified transmission configuration indication unified TCI state, M is a positive integer greater than or equal to 1, and i is a positive integer less than or equal to M.

[0009] In a fifth aspect, a communication device is provided, comprising a memory, a transceiver and a processor, wherein the memory is used to store programs, the processor sends and receives data through the transceiver, and the processor is used to call the program in the memory so that the communication device executes the method described in the first aspect.

[0010] In the sixth aspect, a communication device is provided, comprising a memory, a transceiver and a processor, wherein the memory is used to store programs, the processor sends and receives data through the transceiver, and the processor is used to call the program in the memory so that the communication device executes the method described in the second aspect.

[0011] In a seventh aspect, a communication device is provided, comprising a processor configured to call a program from a memory so that the communication device executes the method described in the first aspect.

[0012] In an eighth aspect, a communication device is provided, comprising a processor configured to call a program from a memory so that the communication device executes the method described in the second aspect.

[0013] In a ninth aspect, a chip is provided, comprising a processor for calling a program from a memory so that a device equipped with the chip executes the method described in the first aspect.

[0014] In a tenth aspect, a chip is provided, comprising a processor for calling a program from a memory so that a device equipped with the chip executes the method described in the second aspect.

[0015] In an eleventh aspect, a computer-readable storage medium is provided, on which a program is stored, wherein the program enables a computer to execute the method described in the first aspect.

[0016] In a twelfth aspect, a computer-readable storage medium is provided, on which a program is stored, wherein the program enables a computer to execute the method described in the second aspect.

[0017] In a thirteenth aspect, a computer program product is provided, comprising a program, wherein the program enables a computer to execute the method described in the first aspect.

[0018] In a fourteenth aspect, a computer program product is provided, comprising a program, wherein the program enables a computer to execute the method described in the second aspect.

[0019] In a fifteenth aspect, a computer program is provided, which enables a computer to execute the method described in the first aspect.

[0020] In a sixteenth aspect, a computer program is provided, which enables a computer to execute the method described in the second aspect.

[0021] In an embodiment of the present application, a terminal device configured and / or indicated in a unified TCI state receives a first beam failure recovery confirmation and performs beam failure recovery on the i-th TRP among M TRPs, thereby enabling beam failure recovery of multiple TRPs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] FIG1 is an example diagram of a wireless communication system used in an embodiment of the present application.

[0023] FIG2 is a schematic diagram of a beam failure recovery mechanism in an embodiment of the present application.

[0024] FIG3 is a schematic diagram of the structure of the BFR MAC CE in an embodiment of the present application.

[0025] FIG4 is a schematic diagram of an intra-cell multi-spatial domain filter and an inter-cell multi-spatial domain filter in an embodiment of the present application.

[0026] FIG5 is a schematic flowchart of a communication method provided in one embodiment of the present application.

[0027] Figure 6 is a schematic diagram of beam failure recovery based on multiple TRPs scheduled by M-DCI in an embodiment of the present application.

[0028] FIG7 is a schematic diagram of the relationship between the search space set and the CORESET in an embodiment of the present application.

[0029] FIG8 is a schematic structural diagram of a communication device provided in one embodiment of the present application.

[0030] FIG9 is a schematic structural diagram of a communication device provided in another embodiment of the present application.

[0031] FIG10 is a schematic structural diagram of a device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0032] The technical solution in this application will be described below with reference to the accompanying drawings.

[0033] FIG1 illustrates a wireless communication system 100 used in an embodiment of the present application. The wireless communication system 100 may include a network device 110 and a user equipment (UE) 120. The network device 110 may communicate with the UE 120. The network device 110 may provide communication coverage for a specific geographic area and may communicate with the UE 120 within the coverage area. The UE 120 may access a network (e.g., a wireless network) through the network device 110.

[0034] Figure 1 exemplarily shows a network device and two UEs. Optionally, the wireless communication system 100 may include multiple network devices, and each network device may include a different number of terminal devices within its coverage area, which is not limited in this embodiment of the present application. Optionally, the wireless communication system 100 may also include other network entities such as a network controller and a mobility management entity, which is not limited in this embodiment of the present application.

[0035] It should be understood that the technical solutions of the embodiments of the present application can be applied to various communication systems, such as: fifth generation (5G) system or new radio (NR), long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD), etc. The technical solutions provided in this application can also be applied to future communication systems, such as the sixth generation mobile communication system, satellite communication system, etc.

[0036] The UE in the embodiments of the present application may also be referred to as a terminal device, an access terminal, a user unit, a user station, a mobile station, a mobile station (MS), a mobile terminal (MT), a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent, or a user apparatus. The UE in the embodiments of the present application may refer to a device that provides voice and / or data connectivity to a user and can be used to connect people, objects, and machines, such as a handheld device or an in-vehicle device with wireless connection capabilities. The UE in the embodiments of the present application can be a mobile phone, a tablet, a laptop, a PDA, a mobile internet device (MID), a wearable device, a virtual reality (VR) device, an augmented reality (AR) device, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical surgery, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, etc. Optionally, the UE can be used to act as a base station. For example, the UE can act as a scheduling entity that provides sidelink signals between UEs in V2X or D2D, etc. For example, a cellular phone and a car communicate with each other using sidelink signals. The cellular phone and smart home devices communicate without relaying the communication signal through a base station.

[0037] The network device in the embodiments of the present application may be a device for communicating with a UE, and may also be referred to as an access network device or a radio access network device. For example, the network device may be a base station. The network device in the embodiments of the present application may refer to a radio access network (RAN) node (or device) that connects a UE to a wireless network. A base station may broadly cover various names as follows, or be replaced with the following names, such as: NodeB, evolved NodeB (eNB), next generation NodeB (gNB), relay station, access point, transmitting and receiving point (TRP), transmitting point (TP), master station MeNB, secondary station SeNB, multi-standard radio (MSR) node, home base station, network controller, access node, wireless node, access point (AP), transmission node, transceiver node, baseband unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), central unit (CU), distributed unit (DU), positioning node, etc. A base station may be a macro base station, a micro base station, a relay node, a donor node, or the like, or a combination thereof.

[0038] In some embodiments, the network device can be fixed or mobile. For example, a helicopter or drone can be configured to act as a mobile network device, and one or more cells can move according to the location of the mobile network device. In other examples, the helicopter or drone can be configured to act as a device for communicating with another network device. In some embodiments, the network device can refer to a CU or a DU, or the network device can include a CU and a DU, or the network device can also include an AAU.

[0039] It should be understood that network devices can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; can also be deployed on water; and can also be deployed in the air on aircraft, balloons, and satellites. The embodiments of this application do not limit the network devices and the scenarios in which they are used.

[0040] It should also be understood that all or part of the functions of the network device and UE in this application can also be implemented through software functions running on hardware, or through virtualization functions instantiated on a platform (such as a cloud platform).

[0041] Currently, some communication systems can support beam failure recovery (BFR) mechanisms in a variety of different scenarios. For example, some communication systems (such as Release 15 (R15) of the NR system) can support the beam failure recovery mechanism of the primary cell (primary cell (PCell) or primary secondary cell (PSCell)); some communication systems (such as R16 of the NR system) can support the beam failure recovery mechanism of the secondary cell (SCell); and some communication systems (such as R17 of the NR system) can support the beam failure recovery mechanism of the special cell (SpCell) or the SCell transmission reception point (TRP-specific).

[0042] The embodiments of the present application mainly relate to TRP-specific beam failure recovery. The TRP-specific beam failure recovery mechanism is introduced below in conjunction with Figure 2.

[0043] The first step is TRP-specific beam failure detection (BFD) based on the beam failure detection reference signal (BFD RS) and TRP-specific new beam identification (NBI) based on the new beam identification reference signal (NBI RS). Each TRP is configured with a BFD RS set (Set) and an NBI RS Set, and the BFD RS Set and the NBI RS Set correspond one to one. The BFD RS may include a periodic channel state information-reference signal (CSI-RS), and the NBI RS may include a synchronization signal block (synchronization signal and PBCH block, SSB) or CSI-RS. After the first step, the UE can also make a beam failure declaration.

[0044] The second step is the reporting of beam failure (beam failure recovery request, BFRQ). When a beam failure occurs in a TRP, the UE needs to use uplink resources to carry the media access control layer control element (media access control control element carrying beam failure request, BFR MAC CE) used to carry beam failure recovery to inform the network device of the beam failure of the TRP. Among them, the uplink resources can come from the physical uplink control channel (PUCCH-scheduling request, PUCCH-SR) request sent by the UE to carry the scheduling request, or it can be the physical uplink shared channel (PUSCH) resources used for other purposes. In addition, the BFR MAC CE can also be inserted in the random access message 3 (Msg 3) or message A (Msg A) (that is, sent through Msg 3 or Msg A).

[0045] The third step is the beam failure recovery response (BFRR). After receiving the BFRQ from the UE, if the network device agrees with the UE's TRP-specific beam failure recovery request, it needs to send the UE a confirmation message (such as a beam failure recovery confirmation), which means that the UE can automatically restore the spatial filter of the specific channel under the TRP of the beam failure.

[0046] The fourth step is to perform beam failure recovery 28 symbols or two time slots after receiving the BFRR. The UE can also recover the uplink industrial control parameters corresponding to the spatial filter.

[0047] It should be noted that in the embodiments of the present application, the spatial filter can also be called a beam. For ease of understanding, it is uniformly referred to as a spatial filter in the embodiments of the present application.

[0048] The TRP-specific beam failure recovery mechanism in FIG2 above can be applied to the operation of multi-TRP within a cell (intra-cell) and between cells (inter-cell). The format of the BFR MAC CE can be as shown in FIG3, wherein SP indicates beam failure detection of a special cell (SpCell) of the media access control (MAC) entity, Cm indicates beam failure detection of a secondary cell (SCell) identified by ServCellIndex m, Sn indicates whether the n-th serving cell is configured with two beam failure detection reference signal (BFD-RS) sets, AC indicates that the byte contains a candidate reference signal (candidate RS) identification (ID) field, ID indicates the identification of the BFD-RS set, and the candidate reference signal (candidate RS) identification (ID) can refer to qnew in the following embodiment (qnew can include qnew0 and / or qnew1), and m, n, and R are all integers.

[0049] With the continuous development of communication technology, a unified transmission configuration indication (unified TCI) state has been introduced in some communication systems. The unified TCI state can indicate the quasi co-location (QCL) relationship between different reference signals. For example, the UE can obtain from the received CSI-RS how to receive reference signals that have not yet been transmitted, such as the physical downlink control channel (PDCCH) demodulation reference signal (DMRS) or the physical downlink shared channel (PDSCH) DMRS QCL relationship. This QCL relationship mainly works in the millimeter wave frequency band (such as the FR2 band) and is mainly used for spatial filter indication.

[0050] The "unified" in the unified transmission configuration indication (unified TCI) state has many meanings. The first layer of "unified" means that this state unifies the uplink and downlink beam indication mechanisms. For example, in the R15 or R16 NR system, the TCI state is only used for downlink spatial filter indication, and the uplink spatial filter indication uses signaling based on spatial relation information. The second layer of "unified" means that the spatial filters between different channels are unified. The unified TCI can include the joint transmission configuration indication (joint TCI) state and the joint transmission configuration indication (separate TCI) states. The separate TCI state can include the downlink transmission configuration indication (DL TCI) state and the uplink transmission configuration indication (UL TCI) state. In the joint TCI state, the UE believes that different channels and signals in the uplink and downlink can have good spatial filter symmetry, that is, a symmetric spatial filter pair is used for uplink and downlink communication. In the separate DL TCI state, the UE unifies the downlink PDCCH (such as UE-specific) and PDSCH (such as UE-specific) into the same spatial filter for transmission. In the separate UL TCI state, the UE uses the same spatial filter for uplink PUCCH and PUSCH.

[0051] Currently, some communication systems (such as version 17 of the NR system) already support, in a single-TRP scenario, when the UE is configured and indicates the unified TCI state, restoring different downlink (or uplink) channels or signals to a unified downlink (or uplink) spatial filter. For example, when the unified TCI state is configured and indicated, after the beam failure recovery is confirmed, the UE can automatically restore different downlink channels (PDCCH or PDSCH, etc.) and signals (CSI-RS, etc.) to a unified downlink spatial filter. Similarly, the UE can also automatically restore different uplink channels (PUCCH or PUSCH, etc.) and signals (sounding reference signal (SRS)), etc.) to a unified uplink spatial filter. At the same time, the UE can also adjust the power control parameters of the uplink or uplink channels and signals to the new spatial filter accordingly.

[0052] However, it is currently unclear how a terminal device configured and / or indicated in a unified TCI state performs beam failure recovery (BFR) in a multi-TRP (multiple transmission reception point, multi-TRP) scenario.

[0053] In order to solve one or more of the above technical problems, the present application proposes a communication method and a communication device.

[0054] The method in the embodiment of the present application is applicable to automatic beam recovery of multiple TRPs within a cell and between cells. The following describes multiple TRPs within a cell and between cells in conjunction with FIG4 .

[0055] As shown in Figure 4, TRP 410 and TRP 420 are located in the same serving cell, which belongs to multiple TRPs within the cell. At this time, TRP 410 and TRP 420 have the same physical cell identity (PCI) value (PCI#M), and the UE cannot distinguish TRP 410 and TRP 420 through PCI; TRP 410 and TRP 430 are located in different serving cells, which belong to multiple TRPs between cells. TRP 410 and TRP 430 have the same serving cell index (serving cell index), but have different PCI values ​​(PCI#M and PCI#N). The UE can distinguish the two TRPs by performing measurements related to PCI.

[0056] In the embodiments of the present application, no distinction is made between multiple TRPs within a cell and multiple TRPs between cells unless otherwise specified.

[0057] The embodiments of the present application are described in detail below with reference to FIG5 to FIG7 .

[0058] FIG5 is a schematic flow chart of a communication method according to an embodiment of the present application. The method 500 shown in FIG5 may include steps S510 and S520, which are as follows:

[0059] S510, the terminal device receives a first beam failure recovery confirmation from the network device.

[0060] Among them, the terminal device can be configured and / or indicated in a unified TCI state. Optionally, the network device can configure the unified TCI state for the terminal device through radio resource control (RRC) signaling. For example, the network device can configure the unified TCI state to the terminal device through RRC signaling when the terminal device switches to the RRC connected state. Optionally, the network device can indicate the unified TCI state to the terminal device through a media access control layer control element (MAC CE) or downlink control information (DCI). For example, the network device can indicate the unified TCI state to the terminal device through MAC CE when the terminal device is in the RRC connected state.

[0061] It should be noted that the network device can configure one or more TCI states (including unified TCI states) for the terminal device, and the "indication" in the above embodiment may refer to: instructing the terminal device to use a specific TCI state or activate a specific TCI state. For example, if the terminal device is configured with only one TCI state, the terminal device can be instructed to use the TCI state; if the terminal device is configured with multiple TCI states, the terminal device can be instructed to activate a specific TCI state therein. Of course, in the embodiment of the present application, the TCI state may be directly indicated without configuring the TCI state. At this time, the TCI state can be configured while indicating the TCI state.

[0062] The first beam failure recovery confirmation may be used to approve the beam failure recovery request for the i-th transmission reception point TRP among the M transmission reception points TRPs, where M is a positive integer greater than or equal to 1, and i is a positive integer less than or equal to M.

[0063] For example, the first beam failure recovery confirmation may be a confirmation message sent by the network device to the terminal device in the third step of Figure 2. The confirmation message may indicate approval of the TRP-specific beam failure recovery request of the terminal device.

[0064] S520, the terminal device performs beam failure recovery on the i-th TRP.

[0065] The beam failure recovery for the i-th TRP here may refer to restoring the channel and / or signal corresponding to the i-th TRP to the same spatial domain filter.

[0066] The channels and / or signals corresponding to the TRP may include: a physical downlink control channel (PDCCH) transmitted using resources in a control channel resource set (CORESET) corresponding to the TRP, and a first signal and / or first channel scheduled by the DCI carried in the PDCCH.

[0067] Optionally, the first signal includes an uplink signal and / or a downlink signal. For example, the first signal may include an access point-channel state information-reference signal (AP-CSI-RS) and / or an access point-sounding reference signal (AP-SRS).

[0068] Optionally, the first channel may include an uplink channel and / or a downlink channel. For example, the first channel may include a physical downlink shared channel (PDSCH) and / or a physical uplink shared channel (PUSCH).

[0069] In an embodiment of the present application, the terminal device may determine the first spatial filter based on the first index of the i-th CORESET in the CORESET pool. Further, the terminal device may perform beam failure recovery of the first spatial filter for the i-th TRP.

[0070] Among them, M TRPs can correspond to multiple DCIs (multi-DCI, M-DCI), that is, each TRP in the M TRPs can send its own DCI to schedule the terminal device. Optionally, the first index includes the CORESETPoolIndex of the i-th group of CORESETs.

[0071] The i-th group of CORESETs may be a CORESET configured by the network device for the terminal device for communication between the terminal device and the i-th TRP. Optionally, the grouping of CORESETs may be configured explicitly or implicitly. Taking the explicit method as an example, assuming that M is 2 (i.e., there are 2 TRPs in total), the network device may configure an RRC parameter CORESETPoolIndex for each CORESET of the terminal device. The parameter CORESETPoolIndex may divide the CORESET pool into two groups. For example, the CORESETs with a CORESETPoolIndex value of 0 are the first group, and the CORESETs with a CORESETPoolIndex value of 1 are the second group. Each group of CORESETs corresponds to one TRP. Taking the implicit method as an example, assuming that M is 2, the default value of the RRC parameter CORESETPoolIndex corresponding to each CORESET can be different. For example, the default value of the RRC parameter CORESETPoolIndex corresponding to one CORESET is 0, and the default value of the RRC parameter CORESETPoolIndex corresponding to another CORESET is 1. At this time, the CORESET with a CORESETPoolIndex value of 0 is the first group, and the CORESET with a CORESETPoolIndex value of 1 is the second group.

[0072] The first spatial domain filter may be the spatial domain filter corresponding to the first RS corresponding to the i-th TRP (corresponding to the first index). The first RS here may refer to a candidate reference signal (candidate RS) in the NBI RS Set. The first RS may be selected by the terminal device from the NBI RS Set, or may be configured or indicated by a network device. For example, the terminal device may determine the spatial domain filter corresponding to the first RS in the NBI RS Set corresponding to the first index (corresponding to the i-th TRP) as the first spatial domain filter.

[0073] Optionally, the terminal device may restore the i-th group of CORESETs to the first spatial filter. Here, restoring the i-th group of CORESETs to the first spatial filter may be understood as: using the first spatial filter to transmit the i-th group of CORESETs

[0074] Optionally, the terminal device may restore the first signal and / or first channel scheduled by the DCI in the i-th group of CORESETs to the first spatial domain filter. The DCI in the i-th group of CORESETs may refer to the DCI carried in the i-th group of CORESETs. Restoring the first signal and / or first channel scheduled by the DCI in the i-th group of CORESETs to the first spatial domain filter may be understood as: transmitting the first signal and / or first channel using the first spatial domain filter.

[0075] For example, for the downlink, assuming that the CORESET pool is divided into two groups, the terminal device can restore the first group of CORESETs (such as the carried PDCCH) to the spatial domain filter corresponding to qnew0 selected from NBI RS Set#0; the terminal device can restore the second group of CORESETs (such as the carried PDCCH) to the spatial domain filter corresponding to qnew1 selected from NBI RS Set#1.

[0076] The terminal device can restore the PDSCH and / or AP-CSI-RS scheduled by the DCI in the first group of CORESET (i.e., CORESETPoolIndex=0) to the spatial domain filter corresponding to qnew0 selected from NBI RS Set#0; the terminal device can restore the PDSCH and / or AP-CSI-RS scheduled by the DCI in the second group of CORESET (i.e., CORESETPoolIndex=1) to the spatial domain filter corresponding to qnew1 selected from NBI RS Set#1.

[0077] For another example, for the uplink, assuming that the CORESET pool is divided into two groups, the terminal device can restore the PUSCH and / or PUCCH and / or AP-SRS scheduled by the DCI in the first group of CORESET (i.e., CORESETPoolIndex=0) to the spatial domain filter corresponding to qnew0 selected from NBI RS Set#0; the terminal device can restore the PUSCH and / or PUCCH and / or AP-SRS scheduled by the DCI in the second group of CORESET (i.e., CORESETPoolIndex=1) to the spatial domain filter corresponding to qnew1 selected from NBI RS Set#1.

[0078] For signals (such as periodic or semi-persistent CSI-RS) and / or channels (such as semi-persistent PDSCH) that are not scheduled by DCI in the CORESET pool, the radio resource control (RRC) signaling can be used to configure whether the channel and / or signal performs beam failure recovery and to which TRP corresponding spatial filter. For periodic or semi-persistent CSI-RS, the granularity of the RRC configuration can be based on the CSI-RS resource set or CSI-RS resource, that is, a CSI-RS resource set or CSI-RS resource is restored to the spatial filter corresponding to the TRP.

[0079] For example, the terminal device can receive a first RRC signaling from a network device, and the first RRC signaling can be used to indicate that the second signal and / or the second channel should be restored to the second spatial domain filter; further, the terminal device can restore the second signal and / or the second channel to the second spatial domain filter based on the first RRC signaling.

[0080] The second spatial domain filter may be determined based on the second index of the j-th group of CORESET in the CORESET pool, the second signal may include a signal other than the signal scheduled by the DCI in the CORESET pool, the second channel may include a channel other than the channel scheduled by the DCI in the CORESET pool, and j is a positive integer less than or equal to M. Optionally, the second spatial domain filter may be the first spatial domain filter, that is, the spatial domain filter corresponding to the i-th TRP.

[0081] As shown in Figure 6, the spatial domain filter fails in the TRP in the serving cell PCI#A, and the CORESETPoolIndex corresponding to the TRP is 0. The terminal device can restore the channel and / or signal corresponding to the TRP to the first spatial domain filter corresponding to the TRP. For signals and / or channels that are not scheduled by the DCI in the CORESET pool, the first RRC signaling indicates that they are restored to the first spatial domain filter, and the terminal device can also restore these channels and / or signals to the first spatial domain filter.

[0082] Optionally, taking the CORESET pool being divided into two groups as an example, RRC configuration can be implemented in the following ways:

[0083] Method 1:

[0084] Two RRC parameters can be set, namely followFirstCORESETsBFR{enable,disable} and followSecondCORESETsBFR{enable,disable}, where followFirstCORESETsBFR corresponds to the first group of CORESETs and followSecondCORESETsBFR corresponds to the second group of CORESETs. 'enable' can represent beam failure recovery, and 'disable' can represent not performing beam failure recovery.

[0085] Method 2:

[0086] An RRC parameter followCORESETsBFR can be set with a value of {0,1,2}, where '0' means no beam failure recovery, '1' means beam failure recovery based on the spatial filters corresponding to the first set of CORESETs, and '2' means beam failure recovery based on the spatial filters corresponding to the second set of CORESETs.

[0087] Method 3:

[0088] An RRC parameter followCORESETsBFR can be set with a value of {0,1,2,3}, where '0' means no beam failure recovery, '1' means beam failure recovery based on the spatial filters corresponding to the first CORESET, '2' means beam failure recovery based on the spatial filters corresponding to the second CORESET, and '3' means beam failure recovery based on both the spatial filters corresponding to the first and second CORESETs.

[0089] For signals and / or channels that are not scheduled by DCI in the CORESET pool and have no RRC signaling configured for beam failure recovery, the terminal device may not perform beam failure recovery on them.

[0090] For example, the terminal device may not perform beam failure recovery on the third signal and / or the third channel. The third signal may be a signal other than the signal scheduled by the DCI in the CORESET pool, and the third channel may be a channel other than the channel scheduled by the DCI in the CORESET pool.

[0091] In an embodiment of the present application, when M TRPs use single-DCI (S-DCI) scheduling, only one TRP among the M TRPs sends DCI to schedule signals and / or channels from the M TRPs to the terminal device. At this time, there is no RRC parameter CORESETPoolIndex, the M TRPs are in the same service cell, and the terminal device cannot distinguish the transmission of these M TRPs based on CORESETPoolIndex or PCI.

[0092] Optionally, the network device may divide the CORESET pool into multiple groups through RRC signaling (eg, an RRC parameter similar to CORESETPoolIndex may be introduced into the RRC signaling).

[0093] For example, the terminal device may receive a second RRC signaling, wherein the second RRC signaling may be used to indicate the CORESETs included in the i-th group CORESET and the first index of the i-th group CORESET in the CORESET pool.

[0094] At this time, when the CORESET pool is divided into multiple groups, beam failure recovery can be performed on M TRPs with reference to the method in the above embodiment.

[0095] Optionally, in addition to the above-mentioned grouping scheme using CORESET, the search space set (SSS) of the downlink control channel can also be grouped through RRC signaling, so that the terminal device can perform TRP-specific beam failure recovery on the CORESET to which it is associated based on the grouping of the search space set. Different search space set groups can correspond to different search periods and offsets.

[0096] Optionally, each search space set group can be associated with a CORESET. There can be a maximum of 10 search space set groups and a maximum of 3 CORESETs on a bandwidth part (BWP), so this correspondence can be many-to-one. When configuring resources, the network device can ensure that the same search space set group will not be associated with two groups of CORESETs, and these two groups of CORESETs correspond to different TRPs. For example, as shown in Figure 7, CORESET#a can correspond to search space set#1, CORESET#b can correspond to search space set#2 and search space set#3, and CORESET#c can correspond to search space set#10. The first search space set group can include search space set#1, search space set#2 and search space set#3, and the second search space set group includes search space set#10.

[0097] The RRC snippet shows how a search space set is associated with a CORESET. For example, in the following RRC snippet, "SearchSpaceId" represents the index of the search space set, and "ControlResourceSetId" represents the index of the CORESET associated with the search space set represented by "SearchSpaceId".

[0098]

[0099] For example, the terminal device may receive a third radio resource control RRC signaling, where the third RRC signaling may be used to indicate the search space set included in the i-th search space set group and the index of the i-th search space set group in the search space set pool; further, the terminal device may determine the index of the i-th search space set group in the search space set pool as the first index of the i-th group CORESET in the CORESET pool. The i-th group CORESET may include the CORESET associated with the search space set in the i-th search space set group.

[0100] At this time, when the search space set pool is divided into multiple groups, the method in the above embodiment can be referred to to perform beam failure recovery on M TRPs.

[0101] For example, for the downlink, assuming that the search space set pool is divided into two groups, the terminal device can restore all CORESETs associated with the first search space set group (such as the carried PDCCH) to the spatial filter corresponding to qnew0 selected from NBI RS Set#0; the terminal device can restore all CORESETs associated with the second search space set group (such as the carried PDCCH) to the spatial filter corresponding to qnew1 selected from NBI RS Set#1.

[0102] The terminal device can restore the PDSCH and / or AP-CSI-RS scheduled by the DCI in all CORESETs associated with the first search space set group to the spatial filter corresponding to qnew0 selected from NBI RS Set#0; the terminal device can restore the PDSCH and / or AP-CSI-RS scheduled by the DCI in all CORESETs associated with the second search space set group to the spatial filter corresponding to qnew1 selected from NBI RS Set#1.

[0103] For another example, for the uplink, assuming that all CORESETs associated with the search space set pool are divided into two groups, the terminal device can restore the PUSCH and / or PUCCH and / or AP-SRS scheduled by the DCI in all CORESETs associated with the first search space set group to the spatial filter corresponding to qnew0 selected from NBI RS Set#0; the terminal device can restore the PUSCH and / or PUCCH and / or AP-SRS scheduled by the DCI in all CORESETs associated with the second search space set group to the spatial filter corresponding to qnew1 selected from NBI RS Set#1.

[0104] For DCI-scheduled signals (such as periodic or semi-persistent CSI-RS) and / or channels (such as semi-persistent PDSCH) in all CORESETs that are not associated with the search space set pool, RRC signaling can be used to configure whether the channel and / or signal performs beam failure recovery and to which TRP corresponding spatial filter.

[0105] For signals and / or channels that are not scheduled by DCI in all CORESETs associated with the search space set pool and for which beam failure recovery is not configured by RRC signaling, the terminal device may not perform beam failure recovery on them.

[0106] The advantage of this is that RRC configuration is performed through the search space set, and the granularity of beam failure recovery can be finer (compared to CORESET grouping). In addition, it can also be adjusted according to the type of search space set. For example, the search space set for BFR and the search space set for paging can be controlled independently, allowing their beam failure recovery to a specific TRP, thereby reducing the latency of specific control information.

[0107] In an embodiment of the present application, a TRP-specific beam failure recovery scheme can be pre-specified in the communication protocol, eliminating the need for configuration via RRC signaling and improving beam failure recovery efficiency. Furthermore, this eliminates the need to consider whether multi-TRP operation is based on M-DCI or S-DCI; both are applicable, making it more convenient.

[0108] Optionally, the grouping of CORESETs may be predefined in the communication protocol.

[0109] For example, target configuration information may be set in the terminal device based on the communication protocol, and the target configuration information may include: the target CORESET used for the terminal device to communicate with the i-th TRP is restored to the spatial domain filter corresponding to the target RS.

[0110] At this time, the terminal device can restore the target CORESET to the spatial domain filter corresponding to the target RS according to the target configuration information.

[0111] Optionally, the grouping of the search space set may also be predefined in the communication protocol.

[0112] For example, target configuration information may be set in the terminal device based on the communication protocol, and the target configuration information may include: a CORESET associated with a target search space set may be restored to a spatial domain filter corresponding to a target RS.

[0113] At this time, the terminal device can restore the target CORESET to the spatial filter corresponding to the target RS according to the target configuration information. The target CORESET may include the CORESET associated with the target search space set that is used for communication between the terminal device and the i-th TRP.

[0114] Furthermore, the terminal device may also restore the target signal and / or target channel scheduled by the DCI on the target CORESET to the spatial domain filter corresponding to the target RS according to the target configuration information.

[0115] Optionally, the target signal may include AP-CSI-RS.

[0116] Optionally, the target channel may include PDSCH and / or PUSCH.

[0117] The specific beam failure recovery method can be referred to the aforementioned embodiment and will not be repeated here.

[0118] In an embodiment of the present application, the terminal device may report the RS identifier corresponding to the TRP in which the beam failed to be formed to the network device. Accordingly, the network device may instruct the terminal device to restore the TRP to the spatial domain filter corresponding to the RS.

[0119] Optionally, the terminal device may send a beam failure recovery request to the network device. The beam failure recovery request may carry first information, and the first information may be used to indicate the target RS. The beam failure recovery request may be the BFRQ reported by the terminal device to the network device in the second step of FIG. 2 . That is, the terminal device may send the beam failure recovery request to the network device before S510.

[0120] Furthermore, the network device may send a target unified TCI state to the terminal device, or in other words, the network device may indicate to the terminal device the target unified TCI state associated with the target RS. For example, the network device may send the target unified TCI state to the terminal device via a MAC CE. The target unified TCI state may be associated with the target RS. Optionally, the association between the target unified TCI state and the target RS may be configured when the network device configures the unified TCI state for the terminal device. The one or more TCI states configured by the network device for the terminal device may include the target unified TCI state.

[0121] Alternatively, because the network device knows the association between the target unified TCI state and the target RS, after receiving the first information, the network device may not send the target unified TCI state, but instead may send only a confirmation message to the terminal device. For example, the network device may send confirmation information to the terminal device, where the confirmation information may be used to indicate whether the network device agrees to perform beam failure recovery on the signal and / or channel under the target unified TCI state.

[0122] Optionally, when the target unified TCI state is in an activated state, the terminal device may restore the i-th TRP to the spatial domain filter corresponding to the target RS.

[0123] For example, the target unified TCI state may be a joint TCI state. In this case, the terminal device may restore at least one of the uplink channel, uplink signal, downlink channel, and downlink signal to which the joint TCI state applies to the spatial domain filter corresponding to the target RS.

[0124] For another example, the target unified TCI state may be a DL TCI state. In this case, the terminal device may restore the downlink channel and / or downlink signal affected by the DL TCI state to the spatial domain filter corresponding to the target RS.

[0125] For another example, the target unified TCI state may be a UL TCI state. In this case, the terminal device may restore the uplink channel and / or uplink signal affected by the UL TCI state to the spatial domain filter corresponding to the target RS.

[0126] In the above embodiment, the downlink channel may include: PDCCH and / or PDSCH. The downlink signal may include AP-CSI-RS. The uplink channel may include: PUCCH and / or PUSCH. The downlink signal may include SRS.

[0127] In an embodiment of the present application, a terminal device configured and / or indicated in a unified TCI state receives a first beam failure recovery confirmation and performs beam failure recovery on the i-th TRP among M TRPs, thereby enabling beam failure recovery of multiple TRPs.

[0128] The method embodiment of the present application is described in detail above in conjunction with Figures 1 to 7 . The device embodiment of the present application is described in detail below in conjunction with Figures 8 and 10 . It should be understood that the description of the method embodiment corresponds to the description of the device embodiment. Therefore, for parts not described in detail, reference can be made to the above method embodiment.

[0129] FIG8 is a schematic structural diagram of a communication device provided in an embodiment of the present application. As shown in FIG8 , the device 800 includes a receiving unit 810 and a recovery unit 820, specifically as follows:

[0130] A receiving unit 810 is configured to receive a first beam failure recovery confirmation from a network device, where the first beam failure recovery confirmation is used to approve a beam failure recovery request for an i-th transmission reception point TRP among M transmission reception points TRPs, where the device is configured and / or indicates a unified transmission configuration indication (TCI) state, where M is a positive integer greater than 1, and i is a positive integer less than or equal to M.

[0131] The recovery unit 820 is used to perform beam failure recovery on the i-th TRP.

[0132] Optionally, the recovery unit 820 is specifically used to: determine a first spatial domain filter based on the first index of the i-th group of control channel resource set CORESET in the CORESET pool, the i-th group of CORESET being the CORESET configured by the network device for the device to communicate between the device and the i-th TRP; and perform beam failure recovery of the first spatial domain filter on the i-th TRP.

[0133] Optionally, the recovery unit 820 is specifically configured to: determine a spatial domain filter corresponding to a first reference signal RS in a new beam finding reference signal set NBI RS Set corresponding to the first index as the first spatial domain filter.

[0134] Optionally, the restoration unit 820 is specifically configured to restore the i-th group of CORESETs to the first-wave spatial domain filter.

[0135] Optionally, the restoration unit 820 is specifically configured to restore the first signal and / or first channel scheduled by the downlink control information DCI in the i-th group of CORESET to the first spatial domain filter.

[0136] Optionally, the first channel includes an uplink channel and / or a downlink channel, and the first signal includes an uplink signal and / or a downlink signal.

[0137] Optionally, the first signal includes an access point-channel state information-reference signal AP-CSI-RS.

[0138] Optionally, the first channel includes a physical downlink shared channel PDSCH and / or a physical uplink shared channel PUSCH.

[0139] Optionally, the recovery unit 820 is also used to: receive a first radio resource control RRC signaling from a network device, the first RRC signaling is used to indicate that the second signal and / or the second channel is restored to a second spatial domain filter, the second spatial domain filter is determined based on the second index of the j-th group of CORESET in the CORESET pool, the second signal includes a signal other than the signal scheduled by the downlink control information DCI in the CORESET pool, the second channel includes a channel other than the channel scheduled by the DCI in the CORESET pool, and j is a positive integer less than or equal to M; based on the first RRC signaling, the second signal and / or the second channel is restored to the second spatial domain filter.

[0140] Optionally, the recovery unit 820 is further used to: not perform beam failure recovery on a third signal and / or a third channel, the third signal being a signal other than a signal scheduled by the downlink control information DCI in the CORESET pool, and the third channel being a channel other than a channel scheduled by the DCI in the CORESET pool.

[0141] Optionally, the M TRPs correspond to multiple downlink control information M-DCI, and the first index includes the CORESETPoolIndex of the i-th group of CORESETs.

[0142] Optionally, the M TRPs correspond to single downlink control information S-DCI, wherein the receiving unit 810 is further used to: receive a second radio resource control RRC signaling, the second RRC signaling being used to indicate the CORESETs included in the i-th group CORESET and the first index of the i-th group CORESET in the CORESET pool.

[0143] Optionally, the M TRPs correspond to single downlink control information S-DCI, wherein the receiving unit 810 is further used to: receive a third radio resource control RRC signaling, the third RRC signaling being used to indicate the search space set contained in the i-th search space set search space set group and the index of the i-th search space set group in the search space set pool; the device 800 also includes a determining unit 830, used to: determine the index of the i-th search space set group in the search space set pool as the first index of the i-th group of control channel resource set CORESET in the CORESET pool, and the i-th group of CORESET includes the CORESET associated with the search space set in the i-th search space set group.

[0144] Optionally, the device is configured with target configuration information based on the communication protocol, and the target configuration information includes: restoring the target control channel resource set CORESET used for the device to communicate with the i-th TRP to the spatial domain filter corresponding to the target reference signal RS; wherein the recovery unit 820 is specifically used to: restore the target CORESET to the spatial domain filter corresponding to the target RS according to the target configuration information.

[0145] Optionally, the device is configured with target configuration information based on the communication protocol, and the target configuration information includes: the control channel resource set CORESET associated with the target search space set search space set is restored to the spatial domain filter corresponding to the target reference signal RS; wherein the recovery unit 820 is specifically used to: restore the target CORESET to the spatial domain filter corresponding to the target RS according to the target configuration information, and the target CORESET includes the CORESET associated with the target search space set for communication between the device and the i-th TRP.

[0146] Optionally, the restoration unit 820 is specifically configured to restore the target signal and / or target channel scheduled by the downlink control information DCI on the target CORESET to a spatial domain filter corresponding to the target RS according to the target configuration information.

[0147] Optionally, the target signal includes an access point-channel state information-reference signal AP-CSI-RS.

[0148] Optionally, the target channel includes a physical downlink shared channel PDSCH.

[0149] Optionally, the device 800 also includes a sending unit 840, which is used to: send a beam failure recovery request to the network device, the beam failure recovery request carries first information, and the first information is used to indicate a target reference signal RS; the receiving unit 810 is also used to: receive a target unified TCI state sent by the network device, and the target unified TCI state is associated with the target RS.

[0150] Optionally, the restoration unit 820 is specifically configured to: when the target unified TCI state is in an activated state, restore the i-th TRP to a spatial domain filter corresponding to the target reference signal RS.

[0151] Optionally, the target unified TCI state includes a joint transmission configuration indication joint TCI state; wherein the recovery unit 820 is specifically used to: restore at least one of the uplink channel, uplink signal, downlink channel and downlink signal affected by the joint TCI state to the spatial domain filter corresponding to the target RS.

[0152] Optionally, the target unified TCI state includes a downlink transmission configuration indication DL TCI state; wherein the recovery unit 820 is specifically configured to restore the downlink channel and / or downlink signal affected by the DL TCI state to the spatial domain filter corresponding to the target RS.

[0153] Optionally, the target unified TCI state includes an uplink transmission configuration indication UL TCI state; wherein the recovery unit 820 is specifically used to: restore the uplink channel and / or uplink signal affected by the UL TCI state to the spatial domain filter corresponding to the target RS.

[0154] Optionally, the downlink channel includes: a physical downlink control channel PDCCH and / or a physical downlink shared channel PDSCH, and the downlink signal includes an access point-channel state information-reference signal AP-CSI-RS.

[0155] Optionally, the uplink channel includes: a physical uplink control channel PUCCH and / or a physical uplink shared channel PUSCH, and the downlink signal includes a sounding reference signal SRS.

[0156] FIG9 is a schematic structural diagram of a communication device provided in an embodiment of the present application. As shown in FIG9 , the device 900 includes a sending unit 910, which is specifically as follows:

[0157] The sending unit 910 is used to send a first beam failure recovery confirmation to the terminal device, where the first beam failure recovery confirmation is used to agree to the beam failure recovery request for the i-th TRP among M transmission receiving points TRP. The terminal device is configured and / or indicates a unified transmission configuration indication unified TCI state, where M is a positive integer greater than or equal to 1, and i is a positive integer less than or equal to M.

[0158] Optionally, the sending unit 910 is also used to: send a first radio resource control RRC signaling to the terminal device, the first RRC signaling is used to indicate that the second signal and / or the second channel is restored to a second spatial domain filter, the second spatial domain filter is determined based on the second index of the j-th group of control channel resource set CORESET in the CORESET pool, the second signal includes a signal other than the signal scheduled by the downlink control information DCI in the CORESET pool, the second channel includes a channel other than the channel scheduled by the DCI in the CORESET pool, and j is a positive integer less than or equal to M.

[0159] Optionally, the M TRPs correspond to multiple downlink control information M-DCI.

[0160] Optionally, the M TRPs correspond to single downlink control information S-DCI, wherein the sending unit 910 is further used to: send a second radio resource control RRC signaling to the terminal device, the second RRC signaling being used to indicate the CORESETs included in the i-th group CORESET and the first index of the i-th group CORESET in the CORESET pool.

[0161] Optionally, the M TRPs correspond to single downlink control information S-DCI, wherein the sending unit is further used to: send a third radio resource control RRC signaling to the terminal device, the third RRC signaling being used to indicate the search space set contained in the i-th search space set search space set group and the index of the i-th search space set group in the search space set pool.

[0162] Optionally, the device 900 also includes a receiving unit 920, which is used to: receive a beam failure recovery request sent by the terminal device, the beam failure recovery request carries first information, and the first information is used to indicate a target reference signal RS; the sending unit 910 is also used to: send a target unified TCI state to the terminal device, and the target unified TCI state is associated with the target RS.

[0163] Optionally, the target unified TCI state includes one or more of a joint transmission configuration indication ("joint TCI") state, a downlink transmission configuration indication ("DL") state, and an uplink transmission configuration indication ("UL") state.

[0164] Optionally, the downlink channels affected by the joint TCI state and / or the DL TCI state include: a physical downlink control channel PDCCH and / or a physical downlink shared channel PDSCH, and the downlink signal includes an access point-channel state information-reference signal AP-CSI-RS.

[0165] Optionally, the uplink channels affected by the joint TCI state and / or the UL TCI state include: a physical uplink control channel PUCCH and / or a physical uplink shared channel PUSCH, and the downlink signal includes a sounding reference signal SRS.

[0166] FIG10 is a schematic diagram of the structure of an apparatus provided in one embodiment of the present application. The dotted lines in FIG10 indicate that the unit or module is optional. Apparatus 1000 may be used to implement the method described in the above method embodiment. Apparatus 1000 may be a chip or a communication device.

[0167] The device 1000 may include one or more processors 1010. The processor 1010 may support the device 1000 to implement the method described in the method embodiment above. The processor 1010 may be a general-purpose processor or a special-purpose processor. For example, the processor may be a central processing unit (CPU). Alternatively, the processor may be another general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, etc. The general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc.

[0168] The apparatus 1000 may further include one or more memories 1020. The memories 1020 store programs that can be executed by the processor 1010, causing the processor 1010 to perform the methods described in the above method embodiments. The memories 1020 may be independent of the processor 1010 or integrated into the processor 1010.

[0169] The apparatus 1000 may further include a transceiver 1030. The processor 1010 may communicate with other devices or chips via the transceiver 1030. For example, the processor 1010 may transmit and receive data with other devices or chips via the transceiver 1030.

[0170] The present invention also provides a computer-readable storage medium for storing a program. The computer-readable storage medium can be applied to the communication device provided in the present invention, and the program enables a computer to execute the method performed by the communication device in each embodiment of the present invention.

[0171] The present application also provides a computer program product. The computer program product includes a program. The computer program product can be applied to the communication device provided in the present application, and the program causes a computer to execute the method performed by the communication device in each embodiment of the present application.

[0172] The embodiments of the present application also provide a computer program. The computer program can be applied to the communication device provided in the embodiments of the present application, and the computer program enables a computer to execute the method performed by the communication device in each embodiment of the present application.

[0173] It should be understood that in the embodiments of the present application, "B corresponding to A" means that B is associated with A and B can be determined based on A. However, it should also be understood that determining B based on A does not mean determining B based solely on A, but B can also be determined based on A and / or other information.

[0174] It should be understood that the term "and / or" in this document simply describes a relationship between related objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0175] It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0176] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0177] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0178] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0179] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium can be any available medium that can be read by a computer or a data storage device such as a server or data center that includes one or more available media integrated therein. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a digital versatile disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0180] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A communication method, characterized in that: include: The terminal device receives a first beam failure recovery confirmation from the network device, where the first beam failure recovery confirmation is used to approve a beam failure recovery request for an i-th transmission reception point TRP among M transmission reception points TRPs, and the terminal device is configured and / or indicates a unified transmission configuration indication unified TCI state, where M is a positive integer greater than or equal to 1, and i is a positive integer less than or equal to M; The terminal device performs beam failure recovery on the i-th TRP.

2. The method according to claim 1, characterized in that The terminal device performs beam failure recovery on the i-th TRP, including: The terminal device determines a spatial domain filter based on a first index of an i-th control channel resource set CORESET in a CORESET pool, where the i-th CORESET is a CORESET configured by a network device for the terminal device to communicate with the i-th TRP; The terminal device performs beam failure recovery of the first spatial domain filter on the i-th TRP.

3. The method according to claim 2, characterized in that The terminal device determines a first spatial domain filter based on a first index of the i-th group of CORESETs in the CORESET pool, including: The terminal device determines the spatial domain filter corresponding to the first reference signal RS in the new beam finding reference signal set NBI RS Set corresponding to the first index as the first spatial domain filter.

4. The method according to claim 2 or 3, characterized in that The terminal device performs beam failure recovery of the first spatial filter on the i-th TRP, including: The terminal device restores the i-th group of CORESETs to the first spatial domain filter.

5. The method according to claim 4, characterized in that Restoring, by the terminal device, the i-th group of CORESETs to the first spatial domain filter includes: The terminal device restores the first signal and / or first channel scheduled by the downlink control information DCI in the i-th group CORESET to the first spatial domain filter.

6. The method according to claim 5, characterized in that The first channel includes an uplink channel and / or a downlink channel, and the first signal includes an uplink signal and / or a downlink signal.

7. The method according to claim 6, characterized in that The first signal includes an access point-channel state information-reference signal AP-CSI-RS.

8. The method according to claim 6 or 7, characterized in that The first channel includes a physical downlink shared channel PDSCH and / or a physical uplink shared channel PUSCH.

9. The method according to any one of claims 2 to 8, characterized in that The method further comprises: The terminal device receives a first radio resource control RRC signaling from a network device, where the first RRC signaling is used to instruct to restore a second signal and / or a second channel to a second spatial domain filter, where the second spatial domain filter is determined based on a second index of a j-th group of CORESETs in the CORESET pool, the second signal includes a signal other than a signal scheduled by downlink control information DCI in the CORESET pool, the second channel includes a channel other than a channel scheduled by the DCI in the CORESET pool, and j is a positive integer less than or equal to M; The terminal device restores the second signal and / or the second channel to the second spatial domain filter based on the first RRC signaling.

10. The method according to any one of claims 2 to 8, characterized in that The method further comprises: The terminal device does not perform beam failure recovery on the third signal and / or the third channel, the third signal is a signal other than the signal scheduled by the downlink control information DCI in the CORESET pool, and the third channel is a channel other than the channel scheduled by the DCI in the CORESET pool.

11. The method according to any one of claims 2 to 10, characterized in that The M TRPs correspond to multiple downlink control information M-DCI, and the first index includes the CORESETPoolIndex of the i-th group of CORESETs.

12. The method according to any one of claims 2 to 10, characterized in that The M TRPs correspond to a single downlink control information S-DCI, wherein the method further includes: The terminal device receives second radio resource control RRC signaling, where the second RRC signaling is used to indicate the CORESETs included in the i-th group CORESET and the first index of the i-th group CORESET in the CORESET pool.

13. The method according to any one of claims 2 to 10, characterized in that The M TRPs correspond to a single downlink control information S-DCI, wherein the method further includes: The terminal device receives third radio resource control RRC signaling, where the third RRC signaling is used to indicate the search space sets included in the i-th search space set search space set group and the index of the i-th search space set group in the search space set pool; The terminal device determines the index of the i-th search space set group in the search space set pool as the first index of the i-th control channel resource set CORESET in the CORESET pool, and the i-th group of CORESET includes the CORESET associated with the search space set in the i-th search space set group.

14. The method according to claim 1, wherein The terminal device is configured with target configuration information based on a communication protocol, the target configuration information including: a spatial domain filter corresponding to a target control channel resource set CORESET for the terminal device to communicate with the i-th TRP to be restored; The terminal device performs beam failure recovery on the i-th TRP, including: The terminal device restores the target CORESET to the spatial domain filter corresponding to the target RS according to the target configuration information.

15. The method according to claim 1, wherein The terminal device is configured with target configuration information based on a communication protocol, and the target configuration information includes: a control channel resource set CORESET associated with a target search space set search space set is restored to a spatial domain filter corresponding to a target reference signal RS; The terminal device performs beam failure recovery on the i-th TRP, including: The terminal device restores the target CORESET to the spatial domain filter corresponding to the target RS according to the target configuration information, where the target CORESET includes the CORESET associated with the target search space set that is used for communication between the terminal device and the i-th TRP.

16. The method according to claim 14 or 15, characterized in that Restoring, by the terminal device, the target CORESET to a spatial domain filter corresponding to the target RS according to the target configuration information, including: The terminal device restores the target signal and / or target channel scheduled by the downlink control information DCI on the target CORESET to the spatial domain filter corresponding to the target RS according to the target configuration information.

17. The method according to claim 16, characterized in that The target signal includes an access point-channel state information-reference signal AP-CSI-RS.

18. The method according to claim 16 or 17, characterized in that The target channel includes a physical downlink shared channel PDSCH.

19. The method according to claim 1, wherein Before the terminal device performs beam failure recovery on the i-th TRP, the method further includes: The terminal device sends a beam failure recovery request to the network device, where the beam failure recovery request carries first information, where the first information is used to indicate a target reference signal RS; The terminal device receives a target unified TCI state sent by the network device, where the target unified TCI state is associated with the target RS.

20. The method according to claim 19, characterized in that The terminal device performs beam failure recovery on the i-th TRP, including: When the target unified TCI state is in an activated state, the terminal device restores the i-th TRP to the spatial domain filter corresponding to the target reference signal RS.

21. The method according to claim 20, characterized in that The target unified TCI state includes a joint transmission configuration indication joint TCI state; The terminal device restores the i-th TRP to the spatial domain filter corresponding to the target RS, including: The terminal device restores at least one of the uplink channel, uplink signal, downlink channel and downlink signal affected by the joint TCI state to the spatial domain filter corresponding to the target RS.

22. The method according to claim 20, characterized in that The target unified TCI state includes a downlink transmission configuration indication DL TCI state; The terminal device restores the i-th TRP to the spatial domain filter corresponding to the target RS, including: The terminal device restores the downlink channel and / or downlink signal affected by the DL TCI state to the spatial domain filter corresponding to the target RS.

23. The method according to claim 20, characterized in that The target unified TCI state includes an uplink transmission configuration indication UL TCI state; The terminal device restores the i-th TRP to the spatial domain filter corresponding to the target RS, including: The terminal device restores the uplink channel and / or uplink signal affected by the UL TCI state to the spatial domain filter corresponding to the target RS.

24. The method according to claim 21 or 22, characterized in that The downlink channel includes: a physical downlink control channel PDCCH and / or a physical downlink shared channel PDSCH, and the downlink signal includes an access point-channel state information-reference signal AP-CSI-RS.

25. The method according to claim 21 or 23, characterized in that The uplink channel includes: a physical uplink control channel PUCCH and / or a physical uplink shared channel PUSCH, and the downlink signal includes a sounding reference signal SRS.

26. A communication method, characterized in that: include: The network device sends a first beam failure recovery confirmation to the terminal device, and the first beam failure recovery confirmation is used to agree to the beam failure recovery request for the i-th TRP among M transmission receiving points TRP. The terminal device is configured and / or indicates a unified transmission configuration indication unified TCI state, M is a positive integer greater than or equal to 1, and i is a positive integer less than or equal to M.

27. The method according to claim 26, characterized in that The method further comprises: The network device sends a first radio resource control RRC signaling to the terminal device, where the first RRC signaling is used to instruct the second signal and / or second channel to be restored to a second spatial domain filter, where the second spatial domain filter is determined based on the second index of the j-th group of control channel resource set CORESET in the CORESET pool, and the second signal includes a signal other than a signal scheduled by the downlink control information DCI in the CORESET pool, and the second channel includes a channel other than a channel scheduled by the DCI in the CORESET pool, and j is a positive integer less than or equal to M.

28. The method according to claim 26 or 27, characterized in that The M TRPs correspond to multiple downlink control information M-DCI.

29. The method according to claim 26 or 27, characterized in that The M TRPs correspond to a single downlink control information S-DCI, wherein the method further includes: The network device sends a second radio resource control RRC signaling to the terminal device, where the second RRC signaling is used to indicate the CORESETs included in the i-th group CORESET and a first index of the i-th group CORESET in the CORESET pool.

30. The method according to claim 26 or 27, characterized in that The M TRPs correspond to a single downlink control information S-DCI, wherein the method further includes: The network device sends a third radio resource control RRC signaling to the terminal device, where the third RRC signaling is used to indicate the search space sets included in the i-th search space set search space set group and the index of the i-th search space set group in the search space set pool.

31. The method according to claim 26, wherein The method further comprises: The network device receives a beam failure recovery request sent by the terminal device, where the beam failure recovery request carries first information, where the first information is used to indicate a target reference signal RS; The network device sends a target unified TCI state to the terminal device, where the target unified TCI state is associated with the target RS.

32. The method according to claim 31, characterized in that The target unified TCI state includes one or more of a joint transmission configuration indication ("joint TCI") state, a downlink transmission configuration indication ("DL") state, and an uplink transmission configuration indication ("UL") state.

33. The method according to claim 32, characterized in that The downlink channels affected by the joint TCI state and / or the DL TCI state include: a physical downlink control channel PDCCH and / or a physical downlink shared channel PDSCH, and the downlink signal includes an access point-channel state information-reference signal AP-CSI-RS.

34. The method according to claim 32, wherein The uplink channels affected by the joint TCI state and / or the UL TCI state include: a physical uplink control channel PUCCH and / or a physical uplink shared channel PUSCH, and the downlink signal includes a sounding reference signal SRS.

35. A communication device, characterized in that: include: a receiving unit, configured to receive a first beam failure recovery confirmation from a network device, wherein the first beam failure recovery confirmation is used to approve a beam failure recovery request for an i-th transmission reception point TRP among M transmission reception points TRPs, wherein the device is configured and / or indicates a unified transmission configuration indication unified TCI state, where M is a positive integer greater than 1, and i is a positive integer less than or equal to M; A recovery unit is used to perform beam failure recovery on the i-th TRP.

36. The device according to claim 35, characterized in that The recovery unit is specifically used for: Determining a first spatial domain filter based on a first index of an i-th control channel resource set CORESET in a CORESET pool, where the i-th CORESET is a CORESET configured by a network device for the apparatus to communicate with the i-th TRP; Perform beam failure recovery of the first spatial filter on the i-th TRP.

37. The device according to claim 36, characterized in that The recovery unit is specifically used for: The spatial domain filter corresponding to the first reference signal RS in the new beam finding reference signal set NBI RS Set corresponding to the first index is determined as the first spatial domain filter.

38. The device according to claim 36 or 37, characterized in that The recovery unit is specifically used for: Restore the i-th group of CORESET to the first spatial domain filter.

39. The device according to claim 38, characterized in that The recovery unit is specifically used for: Restoring the first signal and / or first channel scheduled by the downlink control information DCI in the i-th group CORESET to the first spatial domain filter.

40. The device of claim 39, wherein The first channel includes an uplink channel and / or a downlink channel, and the first signal includes an uplink signal and / or a downlink signal.

41. The device according to claim 40, characterized in that The first signal includes an access point-channel state information-reference signal AP-CSI-RS.

42. The device according to claim 40 or 41, characterized in that The first channel includes a physical downlink shared channel PDSCH and / or a physical uplink shared channel PUSCH.

43. The device according to any one of claims 36 to 42, characterized in that The recovery unit is further configured to: receiving first radio resource control (RRC) signaling from a network device, where the first RRC signaling is used to instruct restoration of a second signal and / or a second channel to a second spatial domain filter, where the second spatial domain filter is a spatial domain filter determined based on a second index of the j-th CORESET in the CORESET pool, the second signal includes a signal other than a signal scheduled by downlink control information (DCI) in the CORESET pool, the second channel includes a channel other than a channel scheduled by the DCI in the CORESET pool, and j is a positive integer less than or equal to M; The second signal and / or the second channel is restored to the second spatial domain filter based on the first RRC signaling.

44. The device according to any one of claims 36 to 42, characterized in that The recovery unit is further configured to: Beam failure recovery is not performed on the third signal and / or the third channel, where the third signal is a signal other than the signal number scheduled by the downlink control information DCI in the CORESET pool, and the third channel is a channel other than the channel scheduled by the DCI in the CORESET pool.

45. The device according to any one of claims 36 to 44, characterized in that The M TRPs correspond to multiple downlink control information M-DCI, and the first index includes the CORESETPoolIndex of the i-th group of CORESETs.

46. ​​The device according to any one of claims 36 to 44, characterized in that The M TRPs correspond to a single downlink control information S-DCI, wherein the receiving unit is further configured to: A second radio resource control RRC signaling is received, where the second RRC signaling is used to indicate the CORESETs included in the i-th group CORESET and a first index of the i-th group CORESET in the CORESET pool.

47. The device according to any one of claims 36 to 44, characterized in that The M TRPs correspond to single downlink control information S-DCI, wherein the receiving unit is further used to: receive third radio resource control RRC signaling, where the third RRC signaling is used to indicate the search space sets included in the i-th search space set search space set group and the index of the i-th search space set group in the search space set pool; The apparatus further includes a determining unit, configured to: determine an index of the i-th search space set group in the search space set pool as a first index of the i-th control channel resource set CORESET in the CORESET pool, wherein the i-th group of CORESETs includes a CORESET associated with a search space set in the i-th search space set group.

48. The device according to claim 35, characterized in that The device is configured with target configuration information based on a communication protocol, the target configuration information including: a spatial domain filter corresponding to a target control channel resource set CORESET for the device to communicate with the i-th TRP to be restored to a target reference signal RS; The recovery unit is specifically configured to restore the target CORESET to a spatial domain filter corresponding to the target RS according to the target configuration information.

49. The device according to claim 35, characterized in that The device is configured with target configuration information based on a communication protocol, the target configuration information including: a control channel resource set CORESET associated with a target search space set search space set restored to a spatial domain filter corresponding to a target reference signal RS; The recovery unit is specifically used to: restore the target CORESET to the spatial domain filter corresponding to the target RS according to the target configuration information, and the target CORESET includes the CORESET used for communication between the device and the i-th TRP in the CORESET associated with the target search space set.

50. The device according to claim 48 or 49, characterized in that The restoration unit is specifically configured to restore the target signal and / or target channel scheduled by the downlink control information DCI on the target CORESET to the spatial domain filter corresponding to the target RS according to the target configuration information.

51. The device according to claim 50, characterized in that The target signal includes an access point-channel state information-reference signal AP-CSI-RS.

52. The device according to claim 50 or 51, characterized in that The target channel includes a physical downlink shared channel PDSCH.

53. The device according to claim 35, characterized in that The apparatus further includes a sending unit, configured to: send a beam failure recovery request to the network device, wherein the beam failure recovery request carries first information, and the first information is used to indicate a target reference signal RS; The receiving unit is further configured to receive a target unified TCI state sent by the network device, where the target unified TCI state is associated with the target RS.

54. The method according to claim 53, wherein The restoration unit is specifically configured to restore the i-th TRP to a spatial domain filter corresponding to the target reference signal RS when the target unified TCI state is in an activated state.

55. The device according to claim 54, characterized in that The target unified TCI state includes a joint transmission configuration indication joint TCI state; The restoration unit is specifically configured to restore at least one of the uplink channel, uplink signal, downlink channel and downlink signal in the joint TCI state to a spatial domain filter corresponding to the target RS.

56. The device according to claim 54, characterized in that The target unified TCI state includes a downlink transmission configuration indication DL TCI state; The restoration unit is specifically configured to restore the downlink channel and / or downlink signal to which the DL TCI state is applied to the spatial domain filter corresponding to the target RS.

57. The device according to claim 54, characterized in that The target unified TCI state includes an uplink transmission configuration indication UL TCI state; The restoration unit is specifically configured to restore the uplink channel and / or uplink signal affected by the UL TCI state to the spatial domain filter corresponding to the target RS.

58. The device according to claim 55 or 56, characterized in that The downlink channel includes: a physical downlink control channel PDCCH and / or a physical downlink shared channel PDSCH, and the downlink signal includes an access point-channel state information-reference signal AP-CSI-RS.

59. The device according to claim 55 or 57, characterized in that The uplink channel includes: a physical uplink control channel PUCCH and / or a physical uplink shared channel PUSCH, and the downlink signal includes a sounding reference signal SRS.

60. A communication device, characterized in that include: A sending unit is used to send a first beam failure recovery confirmation to a terminal device, wherein the first beam failure recovery confirmation is used to agree to a beam failure recovery request for the i-th TRP among M transmission receiving points TRP. The terminal device is configured and / or indicates a unified transmission configuration indication unified TCI state, M is a positive integer greater than or equal to 1, and i is a positive integer less than or equal to M.

61. The device according to claim 60, characterized in that The sending unit is further configured to: A first radio resource control RRC signaling is sent to the terminal device, where the first RRC signaling is used to instruct the second signal and / or second channel to be restored to a second spatial domain filter, where the second spatial domain filter is determined based on the second index of the j-th group of control channel resource set CORESET in the CORESET pool, and the second signal includes signals other than signals scheduled by the downlink control information DCI in the CORESET pool, and the second channel includes channels other than channels scheduled by the DCI in the CORESET pool, where j is a positive integer less than or equal to M.

62. The device according to claim 60 or 61, characterized in that The M TRPs correspond to multiple downlink control information M-DCI.

63. The device according to claim 60 or 61, characterized in that The M TRPs correspond to a single downlink control information S-DCI, wherein the sending unit is further configured to: Send a second radio resource control RRC signaling to the terminal device, where the second RRC signaling is used to indicate the CORESETs included in the i-th group CORESET and the first index of the i-th group CORESET in the CORESET pool.

64. The device according to claim 60 or 61, characterized in that The M TRPs correspond to a single downlink control information S-DCI, wherein the sending unit is further configured to: Sending a third radio resource control RRC signaling to the terminal device, where the third RRC signaling is used to indicate the search space sets included in the i-th search space set search space set group and the index of the i-th search space set group in the search space set pool.

65. The device according to claim 60, characterized in that The device further includes a receiving unit, configured to: receiving a beam failure recovery request sent by the terminal device, where the beam failure recovery request carries first information, where the first information is used to indicate a target reference signal RS; The sending unit is further configured to send a target unified TCI state to the terminal device, where the target unified TCI state is associated with the target RS.

66. The device according to claim 65, characterized in that The target unified TCI state includes one or more of a joint transmission configuration indication ("joint TCI") state, a downlink transmission configuration indication ("DL") state, and an uplink transmission configuration indication ("UL") state.

67. The device according to claim 66, characterized in that The downlink channels affected by the joint TCI state and / or the DL TCI state include: a physical downlink control channel PDCCH and / or a physical downlink shared channel PDSCH, and the downlink signal includes an access point-channel state information-reference signal AP-CSI-RS.

68. The device according to claim 66, characterized in that The uplink channels affected by the joint TCI state and / or the UL TCI state include: a physical uplink control channel PUCCH and / or a physical uplink shared channel PUSCH, and the downlink signal includes a sounding reference signal SRS.

69. A communication device, characterized in that It includes a memory, a transceiver and a processor, the memory is used to store programs, the processor sends and receives data through the transceiver, and the processor is used to call the program in the memory so that the communication device executes the method as described in any one of claims 1 to 25.

70. A communication device, characterized in that It includes a memory, a transceiver and a processor, the memory is used to store programs, the processor sends and receives data through the transceiver, and the processor is used to call the program in the memory so that the communication device executes the method as described in any one of claims 26 to 34.

71. A communication device, characterized in that The device comprises a processor configured to call a program from a memory so as to enable the communication device to execute the method according to any one of claims 1 to 25.

72. A communication device, characterized in that The device comprises a processor configured to call a program from a memory so as to cause the communication device to execute the method according to any one of claims 26 to 34.

73. A chip, characterized in that The device comprises a processor configured to call a program from a memory so that a device equipped with the chip executes the method according to any one of claims 1 to 25.

74. A chip, characterized in that The device comprises a processor configured to call a program from a memory so that a device equipped with the chip executes the method according to any one of claims 26 to 34.

75. A computer-readable storage medium, characterized in that A program is stored thereon, the program causing a computer to execute the method according to any one of claims 1 to 25.

76. A computer-readable storage medium, characterized in that A program is stored thereon, the program causing a computer to execute the method according to any one of claims 26 to 34.

77. A computer program product, characterized in that The method comprises a program for causing a computer to execute the method according to any one of claims 1 to 25.

78. A computer program product, characterized in that A program is included, the program causing a computer to execute the method according to any one of claims 26 to 34.

79. A computer program, characterized in that The computer program causes a computer to execute the method according to any one of claims 1 to 25.

80. A computer program, characterized in that The computer program causes a computer to execute the method according to any one of claims 26 to 34.

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