WO2023065213A1

WO2023065213A1 - Beam failure recovery method and apparatus, and terminal device

Info

Publication number: WO2023065213A1
Application number: PCT/CN2021/125281
Authority: WO
Inventors: 尤心
Original assignee: Oppo广东移动通信有限公司
Priority date: 2021-10-21
Filing date: 2021-10-21
Publication date: 2023-04-27
Also published as: CN117643162A

Abstract

Embodiments of the present application provide a beam failure recovery (BFR) method and apparatus, and a terminal device. The method comprises: on the basis of whether at least a portion of TRPs among a plurality of TRPs trigger a BFR procedure, a terminal device determining whether beam failure has occurred in a first cell and/or determining whether to trigger the BFR procedure of the first cell, wherein the plurality of TRPs are TRPs of the first cell.

Description

A beam failure recovery method, device, and terminal equipment

technical field

The embodiments of the present application relate to the technical field of mobile communications, and in particular to a beam failure recovery method and device, and terminal equipment.

Background technique

For a cell, if a beam failure (Beam Failure) occurs in the cell, a beam failure recovery (Beam Failure Recovery, BFR) process for the cell will be triggered. With the evolution of standards, a cell can have multiple transmit and receive points (Transmit Receive Point, TRP), beam failure may occur for each independent TRP, in this case, how to trigger the beam failure recovery process of the cell needs clear.

Contents of the invention

Embodiments of the present application provide a beam failure recovery method and device, a terminal device, a chip, a computer-readable storage medium, a computer program product, and a computer program.

The beam failure recovery method provided in the embodiment of this application includes:

The terminal device determines whether a beam failure occurs in the first cell and/or determines whether to trigger a beam failure recovery procedure of the first cell based on whether at least some of the TRPs in the multiple TRPs trigger the beam failure recovery process, wherein the multiple TRPs is the TRP of the first cell.

The beam failure recovery device provided in the embodiment of the present application is applied to terminal equipment, and the device includes:

A determining unit, configured to determine whether a beam failure occurs in the first cell and/or determine whether to trigger a beam failure recovery procedure of the first cell based on whether at least part of the TRPs in the multiple TRPs trigger a beam failure recovery procedure, wherein the The multiple TRPs are TRPs of the first cell.

The terminal device provided in the embodiment of the present application includes a processor and a memory. The memory is used to store a computer program, and the processor is used to invoke and run the computer program stored in the memory to execute the above beam failure recovery method.

The chip provided in the embodiment of the present application is used to implement the above beam failure recovery method.

Specifically, the chip includes: a processor, configured to call and run a computer program from the memory, so that the device installed with the chip executes the above beam failure recovery method.

The computer-readable storage medium provided by the embodiment of the present application is used for storing a computer program, and the computer program enables the computer to execute the above beam failure recovery method.

The computer program product provided by the embodiments of the present application includes computer program instructions, and the computer program instructions cause a computer to execute the above beam failure recovery method.

The computer program provided in the embodiment of the present application, when running on a computer, enables the computer to execute the above beam failure recovery method.

Through the above technical solution, the terminal device determines whether a beam failure occurs in the first cell and/or determines whether to trigger the beam failure recovery procedure of the first cell based on whether at least some of the TRPs in the multiple TRPs trigger the beam failure recovery process, thus, For the case where the first cell has multiple TRPs, it is clarified how to determine whether beam failure has occurred in the first cell and/or how to determine whether to trigger the beam failure recovery process of the first cell, so that the first cell can recover from beam failure as soon as possible .

Description of drawings

The drawings described here are used to provide a further understanding of the application and constitute a part of the application. The schematic embodiments and descriptions of the application are used to explain the application and do not constitute an improper limitation to the application. In the attached picture:

FIG. 1 is a schematic diagram of an application scenario of an embodiment of the present application;

FIG. 2 is a schematic diagram 1 of a MAC CE for BFR provided by an embodiment of the present application;

Fig. 3 is the second schematic diagram of the MAC CE for BFR provided by the embodiment of the present application;

FIG. 4 is a schematic flowchart of a beam failure recovery method provided in an embodiment of the present application;

FIG. 5 is a schematic diagram of the structural composition of the beam failure recovery device provided by the embodiment of the present application;

FIG. 6 is a schematic structural diagram of a communication device provided by an embodiment of the present application;

FIG. 7 is a schematic structural diagram of a chip according to an embodiment of the present application;

Fig. 8 is a schematic block diagram of a communication system provided by an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

FIG. 1 is a schematic diagram of an application scenario of an embodiment of the present application.

As shown in FIG. 1 , a communication system 100 may include a terminal device 110 and a network device 120 . The network device 120 may communicate with the terminal device 110 through an air interface. Multi-service transmission is supported between the terminal device 110 and the network device 120 .

It should be understood that the embodiment of the present application is only described by using the communication system 100 as an example, but the embodiment of the present application is not limited thereto. That is to say, the technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Long Term Evolution (Long Term Evolution, LTE) system, LTE Time Division Duplex (Time Division Duplex, TDD), Universal Mobile Communication System (Universal Mobile Telecommunication System, UMTS), Internet of Things (Internet of Things, IoT) system, Narrow Band Internet of Things (NB-IoT) system, enhanced Machine-Type Communications (eMTC) system, 5G communication system (also known as New Radio (NR) communication system), or future communication systems, etc.

In the communication system 100 shown in FIG. 1 , the network device 120 may be an access network device that communicates with the terminal device 110 . The access network device can provide communication coverage for a specific geographical area, and can communicate with terminal devices 110 (such as UEs) located in the coverage area.

The network device 120 may be an evolved base station (Evolutional Node B, eNB or eNodeB) in a Long Term Evolution (Long Term Evolution, LTE) system, or a Next Generation Radio Access Network (NG RAN) device, Either a base station (gNB) in the NR system, or a wireless controller in a cloud radio access network (Cloud Radio Access Network, CRAN), or the network device 120 can be a relay station, an access point, a vehicle-mounted device, a wearable Devices, hubs, switches, bridges, routers, or network devices in the future evolution of the Public Land Mobile Network (Public Land Mobile Network, PLMN), etc.

The terminal device 110 may be any terminal device, including but not limited to a terminal device connected to the network device 120 or other terminal devices by wire or wirelessly.

For example, the terminal equipment 110 may refer to an access terminal, a user equipment (User Equipment, UE), a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, user agent, or user device. Access terminals can be cellular phones, cordless phones, Session Initiation Protocol (SIP) phones, IoT devices, satellite handheld terminals, Wireless Local Loop (WLL) stations, Personal Digital Assistant , PDA), handheld devices with wireless communication functions, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, terminal devices in 5G networks or terminal devices in future evolution networks, etc.

The terminal device 110 can be used for device-to-device (Device to Device, D2D) communication.

The wireless communication system 100 may also include a core network device 130 that communicates with the base station. The core network device 130 may be a 5G core network (5G Core, 5GC) device, for example, Access and Mobility Management Function (Access and Mobility Management Function , AMF), and for example, authentication server function (Authentication Server Function, AUSF), and for example, user plane function (User Plane Function, UPF), and for example, session management function (Session Management Function, SMF). Optionally, the core network device 130 may also be a packet core evolution (Evolved Packet Core, EPC) device of the LTE network, for example, a data gateway (Session Management Function+Core Packet Gateway, SMF+PGW- C) equipment. It should be understood that SMF+PGW-C can realize the functions of SMF and PGW-C at the same time. In the process of network evolution, the above-mentioned core network equipment may be called by other names, or a new network entity may be formed by dividing functions of the core network, which is not limited in this embodiment of the present application.

Various functional units in the communication system 100 may also establish a connection through a next generation network (next generation, NG) interface to implement communication.

For example, the terminal device establishes an air interface connection with the access network device through the NR interface to transmit user plane data and control plane signaling; the terminal device can establish a control plane signaling connection with the AMF through the NG interface 1 (N1 for short); access Network equipment such as the next generation wireless access base station (gNB), can establish a user plane data connection with UPF through NG interface 3 (abbreviated as N3); access network equipment can establish control plane signaling with AMF through NG interface 2 (abbreviated as N2) connection; UPF can establish a control plane signaling connection with SMF through NG interface 4 (abbreviated as N4); UPF can exchange user plane data with the data network through NG interface 6 (abbreviated as N6); AMF can communicate with SMF through NG interface 11 (abbreviated as N11) The SMF establishes a control plane signaling connection; the SMF may establish a control plane signaling connection with the PCF through an NG interface 7 (N7 for short).

Figure 1 exemplarily shows a base station, a core network device, and two terminal devices. Optionally, the wireless communication system 100 may include multiple base station devices and each base station may include other numbers of terminals within the coverage area. The device is not limited in the embodiment of this application.

It should be noted that FIG. 1 is only an illustration of a system applicable to this application, and of course, the method shown in the embodiment of this application may also be applicable to other systems. Furthermore, the terms "system" and "network" are often used interchangeably herein. The term "and/or" in this article is just an association relationship describing associated objects, which means that there can be three relationships, for example, A and/or B can mean: A exists alone, A and B exist simultaneously, and there exists alone B these three situations. In addition, the character "/" in this article generally indicates that the contextual objects are an "or" relationship. It should also be understood that the "indication" mentioned in the embodiments of the present application may be a direct indication, may also be an indirect indication, and may also mean that there is an association relationship. For example, A indicates B, which can mean that A directly indicates B, for example, B can be obtained through A; it can also indicate that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also indicate that there is an association between A and B relation. It should also be understood that the "correspondence" mentioned in the embodiments of the present application may mean that there is a direct correspondence or an indirect correspondence between the two, or that there is an association between the two, or that it indicates and is indicated. , configuration and configured relationship. It should also be understood that the "predefined" or "predefined rules" mentioned in the embodiments of this application can be used by pre-saving corresponding codes, tables or other It is implemented by indicating related information, and this application does not limit the specific implementation. For example, pre-defined may refer to defined in the protocol. It should also be understood that in the embodiment of the present application, the "protocol" may refer to a standard protocol in the communication field, for example, it may include the LTE protocol, the NR protocol, and related protocols applied to future communication systems, and this application does not limit this .

In order to facilitate the understanding of the technical solutions of the embodiments of the present application, the related technologies of the embodiments of the present application are described below. The following related technologies can be combined with the technical solutions of the embodiments of the present application as optional solutions, and all of them belong to the embodiments of the present application. protected range.

BFR of Special Cell (SpCell)

The Primary Cell (PCell) is the primary cell on the side of the Master Cell Group (MCG), and the Primary Secondary Cell (PSCell) is the primary cell on the side of the Secondary Cell Group (SCG). PCell and PSCell are collectively referred to as SpCell.

For SpCell, the standard defines its BFR. Specifically, when a beam failure occurs in the SpCell, the beam failure recovery process of the SpCell is triggered. The beam failure recovery process of the SpCell can be implemented through the following process: the terminal device tells the base station which downlink to use by means of random access beam to send a Random Access Response (Random Access Response, RAR), thereby restoring the downlink beam. Specifically, in the random access process, the terminal device sends a random access preamble (random access preamble) to the base station. Here, the random access preamble is configured according to a synchronization signal block (SS/PBCH, SSB), and the terminal device Select the random access preamble that needs to be sent in the following way: the terminal device measures the signal quality of the SSB (such as Reference Signal Received Power (RSRP)), and selects the SSB that satisfies the threshold according to the signal quality of the SSB (SSB and channel Status information-reference signal (Channel Status Information-Reference Signal, CSI-RS) is associated), select the random access preamble corresponding to the SSB, and further, select the physical address corresponding to the random access preamble Random access channel (Physical Random Access Channel, PRACH) resource. After the terminal device selects the random access preamble and the PRACH resource, it sends the selected random access preamble on the selected PRACH resource; after receiving the random access preamble, the base station sends the random access preamble or The PRACH resource where the random access preamble is located can determine which downlink beam associated with the SSB is used to feed back the RAR.

The main steps in the SpCell beam failure recovery process are explained below:

1. Beam failure detection.

The physical layer of the terminal device monitors whether the quality of the physical downlink control channel (Physical Downlink Control Channel, PDCCH) meets the predetermined/configured threshold. As an example, the quality of the PDCCH meets the predetermined/configured threshold may refer to the assumed block error rate of the PDCCH ( Hypothetical BLER) value is less than or equal to the predetermined/configured threshold. Here, the physical layer of the terminal device monitors the quality of the PDCCH in the following manner: the physical layer of the terminal device measures the signal quality of the reference signal (such as CSI-RS and/or SSB) corresponding to the PDCCH, if the signal quality of the reference signal meets the predetermined/configuration threshold, it is considered that the quality of the PDCCH corresponding to the reference signal meets the predetermined/configured threshold.

If the physical layer of the terminal device detects that the quality of the PDCCH does not meet the predetermined/configured threshold, the physical layer of the terminal device reports a beam failure event (beam failure instance) to the MAC layer of the terminal device. For a MAC entity, whenever the physical layer reports a beam failure event, it will add 1 to the counter BFI_COUNTER and restart the timer beamFailureDetectionTimer; if the value of the counter BFI_COUNTER reaches the maximum value during the running of the timer beamFailureDetectionTimer, the terminal device considers that a beamFailureDetectionTimer has occurred A beam failure triggers a beam failure recovery process. Here, for the SpCell, triggering a beam failure recovery process is also triggering a random access process.

2. Selection of new candidate beams.

The terminal device measures the signal quality of reference signals (such as CSI-RS and/or SSB), and selects a reference signal that satisfies a predetermined/configured threshold according to the signal quality of the reference signals. Here, since the reference signal has an association relationship with the beam, "selecting a reference signal satisfying a predetermined/configured threshold" can also be understood as "selecting a new candidate beam satisfying a condition".

Here, if the terminal device does not select a new candidate beam that satisfies the conditions, the terminal device adopts a contention-based random access (contention-based random access) process.

3. Beam failure recovery request.

The terminal device initiates a beam failure recovery request to the base station. Specifically, the terminal device can initiate a beam failure recovery request to the base station in the following ways:

Method 1: The terminal device selects the random access preamble and PRACH resources corresponding to the new candidate beam to initiate random access, and the base station can determine the new candidate beam according to the random access preamble or the PRACH resource.

Method 2: The terminal device reports the new candidate beam selected by it to the base station through a Physical Uplink Control Channel (PUCCH).

4. The terminal device monitors the response to the beam failure recovery request.

If the terminal device detects the feedback information sent by the base station for the beam failure recovery request or the newly transmitted scheduling information, the terminal device considers that the beam failure recovery is successfully completed; if the terminal device does not monitor the feedback information sent by the base station for the beam failure recovery request or If the scheduling information is newly transmitted, the terminal device considers that the beam failure recovery has not been successfully completed.

BFR of Secondary Cell (SCell)

Both the secondary cell on the MCG side and the secondary cell on the SCG side are called SCells. For SCells, BFRs are standardized and defined. Specifically, when a beam failure occurs on the SCell, the beam failure recovery process of the SCell is triggered. The beam failure recovery process of the SCell can be implemented through the following process: the terminal device passes the Media Access Control (MAC) A control element (Control Element, CE) informs the base station that a beam failure has occurred on the SCell.

The types of MAC CE used for beam failure recovery include BFR MAC CE and truncated BFR MAC CE (Truncated BFR MAC CE). Among them, the BFR MAC CE and the truncated BFR MAC CE have variable sizes. For ease of description, the BFR MAC CE and the truncated BFR MAC CE are referred to as MAC CEs for short below. The MAC CE includes a bitmap (bitmap) and N pieces of beam failure recovery information (beam failure recovery information), where N is an integer greater than or equal to 0. As shown in Figure 2, the bitmap in MAC CE is C _i field, which occupies 1 byte (octet); each beam failure recovery information in MAC CE includes AC field, R field and Candidate RS ID or R bits field , each beam failure recovery information occupies 1 byte. As shown in Figure 3, the bitmap in MAC CE is C _i field, occupying 4 bytes; each beam failure recovery information in MAC CE includes AC field, R field and Candidate RS ID field, each beam failure recovery Information occupies 1 byte. Each information field in the MAC CE is described below.

SP: This information field is used to indicate the beam failure detection of the SpCell. BFR MAC CE or Truncated BFR MAC CE is carried in the MAC PDU, and the MAC PDU is sent to the base station during the random access process. In this case, the value of the SP field is 1, which is used to indicate the detection of beam failure in the SpCell ; Otherwise, the value of the SP field is 1.

C _i (BFR MAC CE): This information field is used to indicate the beam failure detection of the SCell whose serving cell index (ServCellIndex) is i. The value of the C _i field is 1 to indicate that the beam failure of the SCell whose ServCellIndex is i has been detected and the evaluation of candidate beams has been completed, and it is used to indicate the beam failure recovery information corresponding to the SCell whose ServCellIndex is i (that is, contains the AC field bytes) are present. The value of the C _i field is 0 to indicate that the beam failure of the SCell whose ServCellIndex is i has not been detected or the beam failure of the SCell whose ServCellIndex is i has been detected but the evaluation of candidate beams has not been completed, and is used to indicate that the ServCellIndex is i The beam failure recovery information (that is, the byte including the AC field) corresponding to the SCell does not exist.

C _i (Truncated BFR MAC CE): This information field is used to indicate the beam failure detection of the SCell whose serving cell index (ServCellIndex) is i. The value of the C _i field is 1 to indicate that the beam failure of the SCell whose ServCellIndex is i has been detected and the evaluation of candidate beams has been completed, and it is used to indicate the beam failure recovery information corresponding to the SCell whose ServCellIndex is i (that is, contains the AC field bytes) may be present. The value of the C _i field is 0 to indicate that the beam failure of the SCell whose ServCellIndex is i has not been detected or the beam failure of the SCell whose ServCellIndex is i has been detected but the evaluation of candidate beams has not been completed, and is used to indicate that the ServCellIndex is i The beam failure recovery information (that is, the byte including the AC field) corresponding to the SCell does not exist.

It should be pointed out that the number of beam failure recovery information (that is, bytes including the AC field) in the Truncated BFR MAC CE may be 0.

AC: This information field is located in the beam failure recovery information (the beam failure recovery information occupies one byte). The AC field is used to indicate whether there is an available beam, and is used to indicate that the candidate reference signal identification (Candidate RS ID) field is in the AC field Whether it exists in the byte where it is located. Wherein, if the signal quality of at least one SSB in the list candidateBeamRSSCellList meets the threshold (for example, the SS-RSRP of at least one SSB is greater than or equal to the threshold rsrp-ThresholdBFR) or the signal quality of at least one CSI-RS in the list candidateBeamRSSCellList meets the threshold ( For example, if there is at least one CSI-RS whose CSI-RSRP is greater than or equal to the threshold rsrp-ThresholdBFR), the value of the AC field is 1; otherwise, the value of the AC field is 0. Further, if the value of the AC field is 1, whether there is a Candidate RS ID field in the byte where the AC field is located; if the value of the AC field is 0, there is no Candidate RS ID in the byte where the AC field is located field, and replaced by R bits.

Candidate RS ID: This information field is located in the beam failure recovery information (the beam failure recovery information occupies one byte). The Candidate RS ID field is used to indicate the beam identifier of the available beam. Specifically, the Candidate RS ID field carries the SSB or CSI-RSRP index whose number quality meets the threshold.

R: Reserved bit, the default setting is 0.

Based on the above solutions, it can be known that for a cell, if a beam failure occurs in the cell, a beam failure recovery process for the cell will be triggered. With the evolution of standards, a cell can have multiple TRPs, and beam failure may occur for each independent TRP. In this case, how to trigger the beam failure recovery process of the cell needs to be clarified. To this end, the following technical solutions of the embodiments of the present application are proposed.

In order to facilitate understanding of the technical solutions of the embodiments of the present application, the technical solutions of the present application are described in detail below through specific examples. As optional solutions, the above related technologies may be combined with the technical solutions of the embodiments of the present application in any combination, and all of them belong to the protection scope of the embodiments of the present application. The embodiment of the present application includes at least part of the following content.

Fig. 4 is a schematic flowchart of a beam failure recovery method provided in an embodiment of the present application. As shown in Fig. 4, the beam failure recovery method includes the following steps:

Step 401: The terminal device determines whether a beam failure occurs in the first cell and/or determines whether to trigger the beam failure recovery procedure of the first cell based on whether at least some of the TRPs in the multiple TRPs trigger the beam failure recovery procedure, wherein the The multiple TRPs are TRPs of the first cell.

In this embodiment of the present application, the first cell has multiple TRPs, and beam failure may occur for each independent TRP. For ease of description, any TRP in the first cell is called a target TRP. In some optional implementation manners, it may be determined whether a beam failure has occurred in the target TRP in the following manner:

The physical layer of the terminal device detects that the signal quality of the target TRP does not meet the specified threshold, and reports a beam failure event to the MAC layer of the terminal device; the MAC layer of the terminal device receives a beam failure event reported by the physical layer After the failure event, add 1 to the value of the first counter and restart the third timer; if the value of the first counter reaches the maximum value during the operation of the third timer, the terminal device determines the target A beam failure occurs in the TRP, and a beam failure recovery process of the target TRP is triggered.

In the above solution, as an example, the first counter may be a counter BFI_COUNTE, and the third timer may be a timer beamFailureDetectionTimer.

In the above solution, optionally, the physical layer of the terminal device measures the beam failure detection reference signal set configured for the target TRP by the network device, and determines whether the quality of the PDCCH corresponding to the target TRP meets a specified threshold based on the measurement result. Here, optionally, the beam failure detection reference signal set includes a CSI-RS set and/or an SSB set.

It should be noted that the network device can configure an independent beam failure detection configuration for each TRP. Here, the beam failure detection configuration includes configuration of at least one of the following information: beam failure detection reference signal set, counter BFI_COUNTE, timer beamFailureDetectionTimer, terminal For each TRP, the device will perform the above beam failure detection according to the corresponding beam failure detection configuration, so as to determine whether the TRP has a beam failure.

In the embodiment of the present application, the multiple TRPs include 2 TRPs or a greater number (greater than 2) of TRPs. The following uses 2 TRPs as an example for illustration, and a larger number of TRPs is also applicable to the embodiment of the present application. Technical solutions.

The following describes how the terminal device determines whether a beam failure occurs in the first cell and/or how to determine whether to trigger a beam failure recovery procedure of the first cell in conjunction with the multiple TRPs including the first TRP and the second TRP.

Option One

If the first TRP triggers a beam failure recovery procedure, and if the beam failure recovery procedure triggered by the first TRP has not been successfully completed, the second TRP triggers a beam failure recovery procedure, then the terminal device Determining that a beam failure has occurred in the first cell and/or determining to trigger a beam failure recovery procedure of the first cell.

In some optional implementation manners, if the first TRP triggers a beam failure recovery procedure, the terminal device uses the first uplink resource to send beam failure information of the first TRP. Here, optionally, the first uplink resource is any uplink resource that can be used by the terminal device; or, the first uplink resource is an uplink resource associated with the first TRP; or, the first uplink The resources are uplink resources associated with the second TRP.

In some optional implementation manners, when the first uplink resource is an uplink resource associated with the second TRP, the terminal device uses the uplink resource associated with the second TRP to send the first TRP After the beam failure information, if the terminal device does not receive the feedback information for the beam failure information sent by the network device or the scheduling information for scheduling new transmissions, the terminal device determines that a beam failure occurs in the second TRP failure, and trigger the beam failure recovery process of the second TRP or directly trigger the beam failure recovery process of the first cell.

In the above scheme, the beam failure information of the first TRP is carried in the first type of BFR MAC CE. As an example, the first type of BFR MAC CE may be called a TRP BFR MAC CE or a truncated TRP BFR MAC CE. In some optional implementation manners, the beam failure information of the first TRP includes at least one of the following:

first information, where the first information is used to indicate the TRP identifier of the first TRP;

second information, where the second information is used to indicate whether beam failure has occurred in the first TRP;

third information, where the third information is used to indicate whether the first TRP has available beams;

Fourth information, where the fourth information is used to indicate beam identities of available beams on the first TRP;

Fifth information, where the fifth information is used to indicate the cell identity of the first cell;

Sixth information, where the sixth information is used to indicate a bandwidth part (BandWidth Part, BWP) identifier corresponding to the first cell;

seventh information, where the seventh information is used to indicate whether beam failure occurs in the first cell;

Eighth information, where the eighth information is used to indicate whether the first cell has available beams;

Ninth information, where the ninth information is used to indicate beam identities of available beams on the first cell.

In the above solution, the beam failure information of one or more TRPs can be carried in the first type of BFR MAC CE. For example: the first type of BFR MAC CE only bears beam failure information of the first TRP. For example: the first type of BFR MAC CE bears the beam failure information of the first TRP and the beam failure information of the second TRP.

Option II

If the beam failure recovery process triggered by the first TRP, the terminal device starts or restarts the first timer; if the beam failure recovery process triggered by the first TRP has not yet After successful completion, and the second TRP triggers a beam failure recovery procedure, the terminal device determines that a beam failure has occurred in the first cell and/or determines to trigger a beam failure recovery procedure of the first cell.

In some optional implementation manners, if the beam failure recovery procedure triggered by the first TRP is successfully completed during the running period of the first timer, the terminal device stops the first timer.

In some optional implementation manners, when the first uplink resource is an uplink resource associated with the second TRP, the terminal device uses the uplink resource associated with the second TRP to send the first TRP After the beam failure information, if the terminal device does not receive the feedback information sent by the network device for the beam failure information or the scheduling information for scheduling new transmissions within the running period of the first timer, the terminal device determines A beam failure occurs in the second TRP, and triggers a beam failure recovery process of the second TRP or directly triggers a beam failure recovery process of the first cell.

As an example: after the terminal device uses the uplink resource associated with the second TRP to send the beam failure information of the first TRP, if the terminal device does not receive the feedback of the beam failure information sent by the network device within the running period of the first timer information or the scheduling information used to schedule new transmissions, it is determined that beam failure has occurred in the second TRP, and the beam failure recovery process of the second TRP is triggered. Further, the terminal device can determine that beam failure has occurred in the first cell and then trigger the beam failure of the first cell. beam failure recovery process.

As an example: after the terminal device uses the uplink resource associated with the second TRP to send the beam failure information of the first TRP, if the terminal device does not receive the feedback of the beam failure information sent by the network device within the running period of the first timer information or scheduling information used to schedule new transmissions, the terminal device may directly determine that a beam failure has occurred in the first cell, thereby triggering a beam failure recovery process of the first cell.

Sixth information, where the sixth information is used to indicate the BWP identifier corresponding to the first cell;

third solution

If the beam failure recovery process triggered by the first TRP, the terminal device starts or restarts the second timer; if the beam failure recovery process triggered by the first TRP has not yet After successful completion, the terminal device determines that a beam failure has occurred in the first cell and/or determines to trigger the beam failure recovery process of the first cell; and/or, the terminal device determines that the beam of the first TRP Failed recovery process failed.

In some optional implementation manners, if the beam failure recovery procedure triggered by the first TRP is successfully completed during the running period of the second timer, the terminal device stops the second timer.

In some optional implementation manners, when the first uplink resource is an uplink resource associated with the second TRP, the terminal device uses the uplink resource associated with the second TRP to send the first TRP After the beam failure information, if the terminal device does not receive the feedback information sent by the network device for the beam failure information or the scheduling information for scheduling new transmissions within the running period of the second timer, the terminal device determines A beam failure occurs in the second TRP, and triggers a beam failure recovery process of the second TRP or directly triggers a beam failure recovery process of the first cell.

As an example: after the terminal device uses the uplink resource associated with the second TRP to send the beam failure information of the first TRP, if the terminal device does not receive the feedback for the beam failure information sent by the network device within the running period of the second timer information or the scheduling information used to schedule new transmissions, it is determined that beam failure has occurred in the second TRP, and the beam failure recovery process of the second TRP is triggered. Further, the terminal device can determine that the beam failure recovery process of the first TRP fails and/or A beam failure occurs in the first cell, thereby triggering a beam failure recovery process of the first cell.

As an example: after the terminal device uses the uplink resource associated with the second TRP to send the beam failure information of the first TRP, if the terminal device does not receive the feedback for the beam failure information sent by the network device within the running period of the second timer information or the scheduling information used to schedule new transmissions, it can directly determine that the beam failure recovery process of the first TRP fails and/or the beam failure occurs in the first cell, and then trigger the beam failure recovery process of the first cell.

It should be noted that the above schemes 2 and 3 can be implemented independently or in combination.

In this embodiment of the present application, when the terminal device determines that a beam failure occurs in the first cell, it triggers a beam failure recovery process of the first cell. How to trigger the beam failure recovery process of the first cell will be described below in combination with different situations of the first cell.

Case 1: a case where the first cell is an SCell.

In this case, if the terminal device determines to trigger the beam failure recovery process of the first cell, the terminal device reports the beam failure information of the first cell, and the beam failure information of the first cell is used for Perform beam failure recovery of the first cell.

In the above scheme, the beam failure information of the first cell is carried in the second type of BFR MAC CE. The second type of BFR MAC CE may be called a BFR MAC CE or a truncated BFR MAC CE. In some optional implementation manners, the beam failure recovery information of the first cell includes at least one of the following:

Ninth information, where the ninth information is used to indicate beam identities of available beams on the first cell;

Tenth information, where the tenth information is used to indicate the TRP identifier of the TRP whose beam failure occurred in the first cell;

Eleventh information, where the eleventh information is used to indicate whether at least some TRPs in the first cell have beam failures;

Twelfth information, where the twelfth information is used to indicate whether at least some TRPs in the first cell have available beams;

Thirteenth information, where the thirteenth information is used to indicate beam identities of available beams on at least some TRPs in the first cell.

In the above solution, the eleventh information includes a first bit map, and the first bit map includes a plurality of bits, and each bit in the plurality of bits is associated with a TRP in the first cell Correspondingly, the value of the bit is used to indicate whether beam failure occurs in the TRP corresponding to the bit.

Case 2: the case where the first cell is a special cell SpCell.

In this case, if the terminal device determines to trigger a beam failure recovery procedure of the first cell, the terminal device triggers a random access procedure to the first cell.

Specifically, the terminal device selects a random access preamble and PRACH resources corresponding to the new candidate beam to initiate random access, and the base station can determine the new candidate beam according to the random access preamble or the PRACH resource. If the terminal device detects the feedback information sent by the base station for the beam failure recovery request or the newly transmitted scheduling information, the terminal device considers that the beam failure recovery is successfully completed; if the terminal device does not monitor the feedback information sent by the base station for the beam failure recovery request or If the scheduling information is newly transmitted, the terminal device considers that the beam failure recovery has not been successfully completed. Further, optionally, the terminal device may report the beam failure information of the first cell to the network device through MSG3 or MSGA.

The technical solutions of the embodiments of the present application are illustrated below in conjunction with specific application examples.

Application example one

The physical layer of the terminal device judges whether the quality of the PDCCH corresponding to the reference signal meets the predetermined/configured threshold (such as the PDCCH Whether the Hypothetical BLER is less than or equal to the threshold), if it is detected that the quality of the PDCCH corresponding to the reference signal does not meet the predetermined/configured threshold, a beam failure event is reported to the MAC layer. For the MAC entity of the terminal device, whenever the physical layer reports a beam failure event to it, it will add 1 to the counter BFI_COUNTER and restart the timer beamFailureDetectionTimer. If the value of the counter BFI_COUNTER reaches the maximum value during the running of the timer beamFailureDetectionTimer, the terminal device considers that a beam failure has occurred in the TRP, and triggers the beam failure recovery process of the TRP.

If the first TRP in the cell triggers the beam failure recovery process, and the second TRP in the cell triggers the beam failure recovery process when the beam failure recovery process triggered by the first TRP has not been successfully completed, the terminal device considers that the A beam failure occurs in a cell, and the beam failure recovery process of the cell is triggered.

In some optional implementation manners, if a beam failure occurs in the first TRP, the terminal device may use any uplink resource or an uplink resource associated with the first TRP and/or the second TRP to generate the beam failure information of the first TRP, Optionally, the beam failure information of the first TRP is carried in the TRP BFR MAC CE.

In some optional implementation manners, if the cell where the beam failure occurs is an SCell, the terminal device reports the beam failure information of the cell to recover the beam failure of the cell. Optionally, the beam failure information of the cell is carried in the BFR MAC CE.

In some optional implementation manners, if the cell where the beam failure occurs is an SpCell, the terminal device triggers a random access procedure to recover the beam of the cell.

In the above solution, optionally, the terminal device may carry at least one of the following information in the beam failure recovery process of the cell:

The community identification of the community;

The corresponding BWP identifier of the cell;

The TRP identifier of the TRP whose beam failure occurred in the cell; here, the TRP whose beam failure occurred is explicitly indicated by the identifier of the beam failure detection reference signal set corresponding to the TRP or the TRP identifier, or the beam failure can also be implicitly generated by 1 bit Failed TRPs, for example, the value of 1 bit is 1 to indicate that the TRP with beam failure is the first TRP, and the value of 1 bit is 0 is used to indicate that the TRP with beam failure is the second TRP;

A bit map used to indicate whether each TRP in the cell has a beam failure; here, each bit in the bit map corresponds to a TRP, for example, the value of a bit is 1 to indicate that a beam failure has occurred in the corresponding TRP, and the bit The value of the bit is 0 to indicate that no beam failure has occurred in the corresponding TRP;

Whether the TRP with beam failure in the cell has an available beam;

The beam identifier of the available beam on the TRP where the beam failure occurs in the cell;

Indication information used to indicate whether beam failure occurs in the cell;

Indication information used to indicate whether the cell has available beams;

Beam IDs of available beams on the cell.

The above technical solutions of the embodiments of the present application can intuitively judge whether beam failures occur in both TRPs, and then determine whether beam failures occur in a cell, which provides a basis for recovering from beam failures in a cell.

Application example two

If the beam failure recovery process triggered by the first TRP in the cell, the terminal device starts or restarts the first timer, if the beam failure recovery process triggered by the first TRP has not been successfully completed during the running period of the first timer, and the If the second TRP triggers the beam failure recovery process, the terminal device considers that the beam failure has occurred in the cell, and triggers the beam failure recovery process of the cell. Optionally, if the beam failure recovery process triggered by the first TRP is successfully completed during the running period of the first timer (for example, the terminal device receives feedback information from the network device or receives new scheduling information from the network device), the terminal The device stops the first timer.

The community identification of the community;

The corresponding BWP identifier of the cell;

Whether the TRP with beam failure in the cell has an available beam;

Indication information used to indicate whether the cell has available beams;

Beam IDs of available beams on the cell.

The above technical solutions of the embodiments of the present application can intuitively judge whether beam failures occur in both TRPs, and then determine whether beam failures occur in a cell, which provides a basis for recovering from beam failures in a cell. Wherein, the first timer is used to judge whether beam failure occurs in both TRPs, which is beneficial to increase the success rate of beam failure recovery. In addition, the terminal device sends the beam failure information of the TRP with beam failure by using the uplink resources associated with the TRP without beam failure. The channel quality of the TRP where the beam failure occurs is relatively weak, and in this case, it can also be considered that the beam failure occurs in the cell. The overall time delay of beam failure recovery can be reduced through the above technical solution.

Application Example 3

If the beam failure recovery process triggered by the first TRP in the cell, the terminal device starts or restarts the second timer; if the beam failure recovery process triggered by the first TRP has not been successfully completed during the running period of the second timer, the terminal device It is considered that a beam failure has occurred in the cell, and a beam failure recovery process of the cell is triggered. Optionally, if the beam failure recovery process triggered by the first TRP is successfully completed during the running period of the second timer (for example, the terminal device has received feedback information from the network device or received new scheduling information from the network device), the terminal The device stops the second timer.

The community identification of the community;

The corresponding BWP identifier of the cell;

Whether the TRP with beam failure in the cell has an available beam;

Indication information used to indicate whether the cell has available beams;

Beam IDs of available beams on the cell.

The above technical solutions of the embodiments of the present application can intuitively judge whether beam failures occur in both TRPs, and then determine whether beam failures occur in a cell, which provides a basis for recovering from beam failures in a cell. Wherein, beam failure occurs in the first TRP, if the beam failure recovery process of the first TRP is not completed within the running period of the second timer, it is considered that the beam failure has occurred in the cell, so that the overall time for beam failure recovery can be reduced delay.

The preferred embodiments of the present application have been described in detail above in conjunction with the accompanying drawings. However, the present application is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present application, various simple modifications can be made to the technical solutions of the present application. These simple modifications all belong to the protection scope of the present application. For example, the various specific technical features described in the above specific implementation manners can be combined in any suitable manner if there is no contradiction. Separately. As another example, any combination of various implementations of the present application can also be made, as long as they do not violate the idea of the present application, they should also be regarded as the content disclosed in the present application. For another example, on the premise of no conflict, the various embodiments described in this application and/or the technical features in each embodiment can be combined with the prior art arbitrarily, and the technical solutions obtained after the combination should also fall within the scope of this application. protected range.

It should also be understood that in the various method embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the order of execution, and the order of execution of the processes should be determined by their functions and internal logic, and should not be used in this application. The implementation of the examples constitutes no limitation. In addition, in this embodiment of the application, the terms "downlink", "uplink" and "sidelink" are used to indicate the transmission direction of signals or data, wherein "downlink" is used to indicate that the transmission direction of signals or data is sent from the station The first direction to the user equipment in the cell, "uplink" is used to indicate that the signal or data transmission direction is the second direction sent from the user equipment in the cell to the station, and "side line" is used to indicate that the signal or data transmission direction is A third direction sent from UE1 to UE2. For example, "downlink signal" indicates that the transmission direction of the signal is the first direction. In addition, in the embodiment of the present application, the term "and/or" is only an association relationship describing associated objects, indicating that there may be three relationships. Specifically, A and/or B may mean: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" in this article generally indicates that the contextual objects are an "or" relationship.

Fig. 5 is a schematic diagram of the structural composition of the beam failure recovery device provided by the embodiment of the present application, which is applied to terminal equipment. As shown in Fig. 5, the beam failure recovery device includes:

The determining unit 501 is configured to determine whether a beam failure occurs in the first cell and/or determine whether to trigger a beam failure recovery procedure of the first cell based on whether at least some of the TRPs in the multiple TRPs trigger a beam failure recovery procedure, wherein the The multiple TRPs are TRPs of the first cell.

In some optional implementation manners, the plurality of TRPs include a first TRP and a second TRP.

In some optional implementation manners, the determining unit 501 is configured to: if the beam failure recovery process triggered by the first TRP, and the beam failure recovery process triggered by the first TRP has not been successfully completed, the If the second TRP triggers a beam failure recovery procedure, it is determined that a beam failure has occurred in the first cell and/or it is determined to trigger a beam failure recovery procedure of the first cell.

In some optional implementation manners, the device further includes: a control unit 502;

The control unit 502 is configured to start or restart a first timer if the first TRP triggers a beam failure recovery procedure;

The determining unit 501 is configured to determine if the beam failure recovery process triggered by the first TRP has not been successfully completed during the running period of the first timer, and the beam failure recovery process is triggered by the second TRP A beam failure occurs in the first cell and/or it is determined to trigger a beam failure recovery procedure of the first cell.

In some optional implementation manners, the control unit 502 is further configured to stop the first timer if the beam failure recovery process triggered by the first TRP is successfully completed during the running period of the first timer. device.

The control unit 502 is configured to start or restart a second timer if the first TRP triggers a beam failure recovery procedure;

The determining unit 501 is configured to determine that a beam failure has occurred in the first cell and/or determine that the beam failure recovery process triggered by the first TRP has not been successfully completed during the running period of the second timer. Triggering a beam failure recovery procedure of the first cell.

In some optional implementation manners, the control unit 502 is further configured to stop the second timer if the beam failure recovery process triggered by the first TRP is successfully completed during the running period of the second timer. device.

In some optional embodiments, the device also includes:

The sending unit 503 is configured to use the first uplink resource to send beam failure information of the first TRP if the first TRP triggers a beam failure recovery procedure.

In some optional implementation manners, the first uplink resource is any uplink resource that can be used by the terminal device; or, the first uplink resource is an uplink resource associated with the first TRP; or, the second An uplink resource is an uplink resource associated with the second TRP.

In some optional implementation manners, the device further includes: a receiving unit;

If the first uplink resource is an uplink resource associated with the second TRP, after the sending unit 503 uses the uplink resource associated with the second TRP to send the beam failure information of the first TRP, if the If the receiving unit does not receive the feedback information for the beam failure information sent by the network device or the scheduling information for scheduling new transmissions, the determining unit 501 determines that a beam failure has occurred in the second TRP, and triggers the The beam failure recovery procedure of the second TRP may trigger the beam failure recovery procedure of the first cell.

If the first uplink resource is an uplink resource associated with the second TRP, after the sending unit 502 uses the uplink resource associated with the second TRP to send the beam failure information of the first TRP, if the The receiving unit does not receive the feedback information for the beam failure information sent by the network device or the scheduling information for scheduling new transmissions during the running period of the first timer, then the determining unit 501 determines that the second TRP occurs beam failure, and trigger the beam failure recovery process of the second TRP or trigger the beam failure recovery process of the first cell.

In some optional implementation manners, the beam failure information of the first TRP is carried in the first type of BFR MAC CE.

In some optional implementation manners, the beam failure information of the first TRP includes at least one of the following:

In some optional embodiments, the device also includes:

The sending unit 503 is configured to report the beam failure information of the first cell if the determining unit 501 determines to trigger the beam failure recovery process of the first cell when the first cell is an SCell, The beam failure information of the first cell is used to recover the beam failure of the first cell; or, if the first cell is an area SpCell, if the determination unit 501 determines to trigger the first cell A beam failure recovery procedure triggers a random access procedure to the first cell.

In some optional implementation manners, the beam failure information of the first cell is carried in the second type of BFR MAC CE.

In some optional implementation manners, the beam failure recovery information of the first cell includes at least one of the following:

Eleventh information, where the eleventh information is used to indicate whether beam failure has occurred in at least some TRPs in the first cell;

In some optional implementation manners, the eleventh information includes a first bit map, and the first bit map includes a plurality of bits, and each bit in the plurality of bits is related to the first cell corresponds to a TRP in , and the value of the bit is used to indicate whether beam failure occurs in the TRP corresponding to the bit.

In some optional embodiments, the device also includes:

The detection unit 504 is configured to detect through the physical layer of the terminal device that the signal quality of the target TRP does not meet the specified threshold, and report a beam failure event to the MAC layer of the terminal device; the MAC layer of the terminal device receives the After a beam failure event reported by the physical layer, add 1 to the value of the first counter and restart the third timer; if the value of the first counter reaches the maximum value during the running period of the third timer, determine A beam failure occurs in the target TRP, and a beam failure recovery process of the target TRP is triggered;

Wherein, the target TRP is any TRP in the first cell.

In some optional implementation manners, the detection unit 504 is further configured to measure the beam failure detection reference signal set configured by the network device for the target TRP through the physical layer of the terminal device, and determine the target TRP based on the measurement result Whether the quality of the corresponding PDCCH meets the specified threshold.

In some optional implementation manners, the beam failure detection reference signal set includes a CSI-RS set and/or an SSB set.

Those skilled in the art should understand that the relevant descriptions of the above-mentioned apparatus for recovering from beam failure in the embodiment of the present application can be understood with reference to the relevant description of the method for recovering from beam failure in the embodiment of the present application.

FIG. 6 is a schematic structural diagram of a communication device 600 provided in an embodiment of the present application. The communication device may be a terminal device or a network device. The communication device 600 shown in FIG. 6 includes a processor 610, and the processor 610 can invoke and run a computer program from a memory, so as to implement the method in the embodiment of the present application.

Optionally, as shown in FIG. 6 , the communication device 600 may further include a memory 620 . Wherein, the processor 610 can invoke and run a computer program from the memory 620, so as to implement the method in the embodiment of the present application.

Wherein, the memory 620 may be an independent device independent of the processor 610 , or may be integrated in the processor 610 .

Optionally, as shown in FIG. 6, the communication device 600 may further include a transceiver 630, and the processor 610 may control the transceiver 630 to communicate with other devices, specifically, to send information or data to other devices, or receive other Information or data sent by the device.

Wherein, the transceiver 630 may include a transmitter and a receiver. The transceiver 630 may further include antennas, and the number of antennas may be one or more.

Optionally, the communication device 600 may specifically be the network device of the embodiment of the present application, and the communication device 600 may implement the corresponding processes implemented by the network device in each method of the embodiment of the present application. For the sake of brevity, details are not repeated here. .

Optionally, the communication device 600 may specifically be the mobile terminal/terminal device of the embodiment of the present application, and the communication device 600 may implement the corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiment of the present application, for the sake of brevity , which will not be repeated here.

FIG. 7 is a schematic structural diagram of a chip according to an embodiment of the present application. The chip 700 shown in FIG. 7 includes a processor 710, and the processor 710 can call and run a computer program from a memory, so as to implement the method in the embodiment of the present application.

Optionally, as shown in FIG. 7 , the chip 700 may further include a memory 720 . Wherein, the processor 710 can invoke and run a computer program from the memory 720, so as to implement the method in the embodiment of the present application.

Wherein, the memory 720 may be an independent device independent of the processor 710 , or may be integrated in the processor 710 .

Optionally, the chip 700 may also include an input interface 730 . Wherein, the processor 710 can control the input interface 730 to communicate with other devices or chips, specifically, can obtain information or data sent by other devices or chips.

Optionally, the chip 700 may also include an output interface 740 . Wherein, the processor 710 can control the output interface 740 to communicate with other devices or chips, specifically, can output information or data to other devices or chips.

Optionally, the chip can be applied to the network device in the embodiment of the present application, and the chip can implement the corresponding processes implemented by the network device in the methods of the embodiment of the present application. For the sake of brevity, details are not repeated here.

Optionally, the chip can be applied to the mobile terminal/terminal device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the mobile terminal/terminal device in the various methods of the embodiments of the present application. For the sake of brevity, here No longer.

It should be understood that the chip mentioned in the embodiment of the present application may also be called a system-on-chip, a system-on-chip, a system-on-a-chip, or a system-on-a-chip.

Fig. 8 is a schematic block diagram of a communication system 800 provided by an embodiment of the present application. As shown in FIG. 8 , the communication system 800 includes a terminal device 810 and a network device 820 .

Wherein, the terminal device 810 can be used to realize the corresponding functions realized by the terminal device in the above method, and the network device 820 can be used to realize the corresponding functions realized by the network device in the above method. .

It should be understood that the processor in the embodiment of the present application may be an integrated circuit chip, which has a signal processing capability. In the implementation process, each step of the above-mentioned method embodiments may be completed by an integrated logic circuit of hardware in a processor or instructions in the form of software. The above-mentioned processor can be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other available Program logic devices, discrete gate or transistor logic devices, discrete hardware components. Various methods, steps, and logic block diagrams disclosed in the embodiments of the present application may be implemented or executed. A general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, register. The storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps of the above method in combination with its hardware.

It can be understood that the memory in the embodiments of the present application may be a volatile memory or a nonvolatile memory, or may include both volatile and nonvolatile memories. Among them, the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electronically programmable Erase Programmable Read-Only Memory (Electrically EPROM, EEPROM) or Flash. The volatile memory can be Random Access Memory (RAM), which acts as external cache memory. By way of illustration and not limitation, many forms of RAM are available, such as Static Random Access Memory (Static RAM, SRAM), Dynamic Random Access Memory (Dynamic RAM, DRAM), Synchronous Dynamic Random Access Memory (Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous connection dynamic random access memory (Synchlink DRAM, SLDRAM ) and Direct Memory Bus Random Access Memory (Direct Rambus RAM, DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but not be limited to, these and any other suitable types of memory.

It should be understood that the above-mentioned memory is illustrative but not restrictive. For example, the memory in the embodiment of the present application may also be a static random access memory (static RAM, SRAM), a dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM), etc. That is, the memory in the embodiments of the present application is intended to include, but not be limited to, these and any other suitable types of memory.

The embodiment of the present application also provides a computer-readable storage medium for storing computer programs.

Optionally, the computer-readable storage medium can be applied to the network device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the network device in the methods of the embodiments of the present application. For brevity, here No longer.

Optionally, the computer-readable storage medium can be applied to the mobile terminal/terminal device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the mobile terminal/terminal device in the various methods of the embodiments of the present application , for the sake of brevity, it is not repeated here.

The embodiment of the present application also provides a computer program product, including computer program instructions.

Optionally, the computer program product may be applied to the network device in the embodiment of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application. For the sake of brevity, the Let me repeat.

Optionally, the computer program product can be applied to the mobile terminal/terminal device in the embodiments of the present application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the mobile terminal/terminal device in the methods of the embodiments of the present application, For the sake of brevity, details are not repeated here.

The embodiment of the present application also provides a computer program.

Optionally, the computer program can be applied to the network device in the embodiment of the present application. When the computer program is run on the computer, the computer executes the corresponding process implemented by the network device in each method of the embodiment of the present application. For the sake of brevity , which will not be repeated here.

Optionally, the computer program can be applied to the mobile terminal/terminal device in the embodiment of the present application. When the computer program is run on the computer, the computer executes each method in the embodiment of the present application to be implemented by the mobile terminal/terminal device For the sake of brevity, the corresponding process will not be repeated here.

Those skilled in the art can appreciate that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present application.

Those skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the above-described system, device and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

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

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

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

If the functions described above are realized in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory,) ROM, random access memory (Random Access Memory, RAM), magnetic disk or optical disc, etc., which can store program codes. .

The above is only a specific implementation of the application, but the scope of protection of the application is not limited thereto. Anyone familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the application. Should be covered within the protection scope of this application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

A beam failure recovery method, the method comprising:

The terminal device determines whether a beam failure occurs in the first cell and/or determines whether to trigger the beam failure recovery procedure of the first cell based on whether at least some TRPs among the multiple sending and receiving point TRPs trigger the beam failure recovery procedure, wherein the The multiple TRPs are TRPs of the first cell.
The method of claim 1, wherein the plurality of TRPs includes a first TRP and a second TRP.
The method according to claim 2, wherein the terminal device determines whether a beam failure occurs in the first cell and/or determines whether to trigger the first cell based on whether at least part of the TRPs in the multiple TRPs trigger the beam failure recovery procedure beam failure recovery process, including:

If the first TRP triggers a beam failure recovery procedure, and if the beam failure recovery procedure triggered by the first TRP has not been successfully completed, the second TRP triggers a beam failure recovery procedure, then the terminal device Determining that a beam failure has occurred in the first cell and/or determining to trigger a beam failure recovery procedure of the first cell.
The method according to claim 2, wherein the terminal device determines whether a beam failure occurs in the first cell and/or determines whether to trigger the first cell based on whether at least part of the TRPs in the multiple TRPs trigger the beam failure recovery procedure beam failure recovery process, including:

If the first TRP triggers a beam failure recovery procedure, the terminal device starts or restarts a first timer;

If the beam failure recovery process triggered by the first TRP has not been successfully completed during the running period of the first timer, and the beam failure recovery process is triggered by the second TRP, then the terminal device determines that the first A beam failure occurs in a cell and/or it is determined to trigger a beam failure recovery procedure of the first cell.
The method according to claim 4, wherein the method further comprises:

If the beam failure recovery process triggered by the first TRP is successfully completed during the running period of the first timer, the terminal device stops the first timer.
The method according to claim 2 or 4, wherein the terminal device determines whether a beam failure occurs in the first cell and/or determines whether to trigger the first cell based on whether at least part of the TRPs in the multiple TRPs trigger the beam failure recovery procedure. The beam failure recovery process of a cell includes:

If the first TRP triggers a beam failure recovery procedure, the terminal device starts or restarts a second timer;

If the beam failure recovery process triggered by the first TRP has not been successfully completed during the running period of the second timer, the terminal device determines that a beam failure has occurred in the first cell and/or determines to trigger the first TRP. Beam failure recovery procedure for a cell.
The method according to claim 6, wherein the method further comprises:

If the beam failure recovery process triggered by the first TRP is successfully completed during the running period of the second timer, the terminal device stops the second timer.
The method according to any one of claims 3 to 7, wherein the method further comprises:

If the first TRP triggers a beam failure recovery procedure, the terminal device uses the first uplink resource to send beam failure information of the first TRP.
The method of claim 8, wherein,

The first uplink resource is any uplink resource that the terminal device can use; or,

The first uplink resource is an uplink resource associated with the first TRP; or,

The first uplink resource is an uplink resource associated with the second TRP.
The method according to claim 9, wherein, when the first uplink resource is an uplink resource associated with the second TRP, the method further comprises:

After the terminal device sends the beam failure information of the first TRP using the uplink resource associated with the second TRP, if the terminal device does not receive the feedback information for the beam failure information sent by the network device or uses For scheduling newly transmitted scheduling information, the terminal device determines that a beam failure has occurred in the second TRP, and triggers a beam failure recovery process of the second TRP or triggers a beam failure recovery process of the first cell.
The method according to claim 9, wherein, when the first uplink resource is an uplink resource associated with the second TRP, the method further comprises:

After the terminal device uses the uplink resource associated with the second TRP to send the beam failure information of the first TRP, if the terminal device does not receive the information sent by the network device for the The feedback information of the beam failure information or the scheduling information used to schedule new transmissions, the terminal device determines that a beam failure has occurred in the second TRP, and triggers the beam failure recovery process of the second TRP or triggers the first Beam failure recovery process for a cell.
The method according to any one of claims 8 to 11, wherein the beam failure information of the first TRP is carried in the first type of beam failure recovery BFR medium access control MAC control unit CE.
The method according to any one of claims 8 to 12, wherein the beam failure information of the first TRP includes at least one of the following:

first information, where the first information is used to indicate the TRP identifier of the first TRP;

second information, where the second information is used to indicate whether beam failure has occurred in the first TRP;

third information, where the third information is used to indicate whether the first TRP has available beams;

Fourth information, where the fourth information is used to indicate beam identities of available beams on the first TRP;

Fifth information, where the fifth information is used to indicate the cell identity of the first cell;

Sixth information, where the sixth information is used to indicate the BWP identifier corresponding to the first cell;

seventh information, where the seventh information is used to indicate whether beam failure occurs in the first cell;

Eighth information, where the eighth information is used to indicate whether the first cell has available beams;

Ninth information, where the ninth information is used to indicate beam identities of available beams on the first cell.
The method according to any one of claims 1 to 13, wherein the method further comprises:

When the first cell is a secondary cell SCell, if the terminal device determines to trigger a beam failure recovery procedure of the first cell, the terminal device reports beam failure information of the first cell, and the second The beam failure information of a cell is used to recover the beam failure of the first cell; or,

When the first cell is a special cell SpCell, if the terminal device determines to trigger a beam failure recovery procedure of the first cell, the terminal device triggers a random access procedure to the first cell.
The method according to claim 14, wherein the beam failure information of the first cell is carried in the second type of BFR MAC CE.
The method according to claim 14 or 15, wherein the beam failure recovery information of the first cell includes at least one of the following:

Fifth information, where the fifth information is used to indicate the cell identity of the first cell;

Sixth information, where the sixth information is used to indicate the BWP identifier of the bandwidth part corresponding to the first cell;

seventh information, where the seventh information is used to indicate whether beam failure occurs in the first cell;

Eighth information, where the eighth information is used to indicate whether the first cell has available beams;

Ninth information, where the ninth information is used to indicate beam identities of available beams on the first cell;

Tenth information, where the tenth information is used to indicate the TRP identifier of the TRP whose beam failure occurred in the first cell;

Eleventh information, where the eleventh information is used to indicate whether at least some TRPs in the first cell have beam failures;

Twelfth information, where the twelfth information is used to indicate whether at least some TRPs in the first cell have available beams;

Thirteenth information, where the thirteenth information is used to indicate beam identities of available beams on at least some TRPs in the first cell.
The method according to claim 16, wherein the eleventh information includes a first bit map, the first bit map includes a plurality of bits, each bit in the plurality of bits is related to the A TRP in the first cell corresponds, and the value of the bit is used to indicate whether beam failure occurs in the TRP corresponding to the bit.
The method according to any one of claims 1 to 17, wherein the method further comprises:

The physical layer of the terminal device detects that the signal quality of the target TRP does not meet a specified threshold, and reports a beam failure event to the MAC layer of the terminal device;

After receiving a beam failure event reported by the physical layer, the MAC layer of the terminal device adds 1 to the value of the first counter and restarts the third timer;

If the value of the first counter reaches a maximum value during the running period of the third timer, the terminal device determines that a beam failure has occurred in the target TRP, and triggers a beam failure recovery process of the target TRP;

Wherein, the target TRP is any TRP in the first cell.
The method according to claim 18, wherein said method further comprises:

The physical layer measurement network device of the terminal device configures the beam failure detection reference signal set for the target TRP, and determines whether the quality of the physical downlink control channel PDCCH corresponding to the target TRP meets a specified threshold based on the measurement result.
The method according to claim 19, wherein the beam failure detection reference signal set includes a channel state information-reference signal CSI-RS set and/or a synchronization signal block SSB set.
A beam failure recovery device, applied to terminal equipment, the device includes:

A determining unit, configured to determine whether a beam failure occurs in the first cell and/or determine whether to trigger a beam failure recovery procedure of the first cell based on whether at least part of the TRPs in the multiple TRPs trigger a beam failure recovery procedure, wherein the The multiple TRPs are TRPs of the first cell.
The apparatus of claim 21, wherein the plurality of TRPs comprises a first TRP and a second TRP.
The device according to claim 22, wherein the determining unit is configured to: if the first TRP triggers a beam failure recovery process, and the beam failure recovery process triggered by the first TRP has not been successfully completed , the second TRP triggers a beam failure recovery procedure, then it is determined that a beam failure has occurred in the first cell and/or it is determined to trigger a beam failure recovery procedure of the first cell.
The device according to claim 22, wherein the device further comprises: a control unit;

The control unit is configured to start or restart a first timer if the first TRP triggers a beam failure recovery procedure;

The determining unit is configured to determine that the beam failure recovery process triggered by the first TRP has not been successfully completed during the running period of the first timer, and the beam failure recovery process is triggered by the second TRP. A beam failure occurs in the first cell and/or it is determined to trigger a beam failure recovery process of the first cell.
The device according to claim 24, wherein the control unit is further configured to stop the first timer if the beam failure recovery process triggered by the first TRP is successfully completed during the running period of the first timer. a timer.
The device according to claim 22 or 24, wherein the device further comprises: a control unit;

The control unit is configured to start or restart a second timer if the first TRP triggers a beam failure recovery procedure;

The determination unit is configured to determine that a beam failure has occurred in the first cell and/or determine a trigger if the beam failure recovery process triggered by the first TRP has not been successfully completed during the running period of the second timer. A beam failure recovery procedure of the first cell.
The device according to claim 26, wherein the control unit is further configured to stop the first TRP if the beam failure recovery process triggered by the first TRP is successfully completed during the running period of the second timer. Two timers.
The device according to any one of claims 23 to 27, wherein the device further comprises:

A sending unit, configured to use the first uplink resource to send beam failure information of the first TRP if the first TRP triggers a beam failure recovery procedure.
The apparatus of claim 28, wherein,

The first uplink resource is any uplink resource that the terminal device can use; or,

The first uplink resource is an uplink resource associated with the first TRP; or,

The first uplink resource is an uplink resource associated with the second TRP.
The device according to claim 29, wherein the device further comprises: a receiving unit;

When the first uplink resource is an uplink resource associated with the second TRP, after the sending unit uses the uplink resource associated with the second TRP to send the beam failure information of the first TRP, if the The receiving unit does not receive the feedback information for the beam failure information sent by the network device or the scheduling information for scheduling new transmissions, then the determining unit determines that a beam failure has occurred in the second TRP, and triggers the second TRP. The beam failure recovery procedure of the TRP may trigger the beam failure recovery procedure of the first cell.
The device according to claim 29, wherein the device further comprises: a receiving unit;

When the first uplink resource is an uplink resource associated with the second TRP, after the sending unit uses the uplink resource associated with the second TRP to send the beam failure information of the first TRP, if the The receiving unit does not receive the feedback information sent by the network device for the beam failure information or the scheduling information used to schedule the new transmission during the running period of the first timer, then the determining unit determines that a beam occurs in the second TRP failure, and trigger the beam failure recovery process of the second TRP or trigger the beam failure recovery process of the first cell.
The apparatus according to any one of claims 28 to 31, wherein the beam failure information of the first TRP is carried in the first type of BFR MAC CE.
The apparatus according to any one of claims 28 to 32, wherein the beam failure information of the first TRP includes at least one of the following:

first information, where the first information is used to indicate the TRP identifier of the first TRP;

second information, where the second information is used to indicate whether beam failure has occurred in the first TRP;

third information, where the third information is used to indicate whether the first TRP has available beams;

Fourth information, where the fourth information is used to indicate beam identities of available beams on the first TRP;

Fifth information, where the fifth information is used to indicate the cell identity of the first cell;

Sixth information, where the sixth information is used to indicate the BWP identifier corresponding to the first cell;

seventh information, where the seventh information is used to indicate whether beam failure occurs in the first cell;

Eighth information, where the eighth information is used to indicate whether the first cell has available beams;

Ninth information, where the ninth information is used to indicate beam identities of available beams on the first cell.
The device according to any one of claims 21 to 33, wherein the device further comprises:

a sending unit, configured to report beam failure information of the first cell if the determining unit determines to trigger a beam failure recovery procedure of the first cell when the first cell is an SCell, and the first cell The beam failure information of a cell is used to restore the beam failure of the first cell; or, in the case where the first cell is a zone SpCell, if the determination unit determines to trigger the beam failure recovery of the first cell process, trigger a random access process to the first cell.
The apparatus according to claim 34, wherein the beam failure information of the first cell is carried in the second type of BFR MAC CE.
The apparatus according to claim 34 or 35, wherein the beam failure recovery information of the first cell includes at least one of the following:

Fifth information, where the fifth information is used to indicate the cell identity of the first cell;

Sixth information, where the sixth information is used to indicate the BWP identifier corresponding to the first cell;

seventh information, where the seventh information is used to indicate whether beam failure occurs in the first cell;

Eighth information, where the eighth information is used to indicate whether the first cell has available beams;

Ninth information, where the ninth information is used to indicate beam identities of available beams on the first cell;

Tenth information, where the tenth information is used to indicate the TRP identifier of the TRP whose beam failure occurred in the first cell;

Eleventh information, where the eleventh information is used to indicate whether at least some TRPs in the first cell have beam failures;

Twelfth information, where the twelfth information is used to indicate whether at least some TRPs in the first cell have available beams;

Thirteenth information, where the thirteenth information is used to indicate beam identities of available beams on at least some TRPs in the first cell.
The apparatus according to claim 36, wherein the eleventh information includes a first bit map, the first bit map includes a plurality of bits, each bit in the plurality of bits is related to the A TRP in the first cell corresponds, and the value of the bit is used to indicate whether beam failure occurs in the TRP corresponding to the bit.
The device according to any one of claims 21 to 37, wherein the device further comprises:

The detection unit is configured to detect that the signal quality of the target TRP does not meet a specified threshold through the physical layer of the terminal device, and report a beam failure event to the MAC layer of the terminal device; the MAC layer of the terminal device receives the After a beam failure event reported by the physical layer, add 1 to the value of the first counter and restart the third timer; if the value of the first counter reaches the maximum value during the running period of the third timer, determine the A beam failure occurs in the target TRP, and a beam failure recovery process of the target TRP is triggered;

Wherein, the target TRP is any TRP in the first cell.
The apparatus according to claim 38, wherein the detection unit is further configured to measure the beam failure detection reference signal set configured by the network device for the target TRP through the physical layer of the terminal device, and determine the Whether the quality of the PDCCH corresponding to the target TRP meets the specified threshold.
The apparatus according to claim 39, wherein the beam failure detection reference signal set comprises a CSI-RS set and/or an SSB set.
A terminal device, comprising: a processor and a memory, the memory is used to store a computer program, the processor is used to call and run the computer program stored in the memory, and execute the computer program described in any one of claims 1 to 20 Methods.
A chip, comprising: a processor, configured to call and run a computer program from a memory, so that a device equipped with the chip executes the method according to any one of claims 1 to 20.
A computer-readable storage medium for storing a computer program, the computer program causing a computer to execute the method according to any one of claims 1-20.
A computer program product comprising computer program instructions for causing a computer to perform the method as claimed in any one of claims 1 to 20.
A computer program that causes a computer to perform the method as claimed in any one of claims 1 to 20.