Beam failure recovery method, terminal and network side device

Abstract

The application discloses a beam failure recovery method, a terminal and a network side device, and belongs to the technical field of communication. The beam failure recovery method of the application comprises the following steps: a terminal performs measurement on at least two beam failure detection reference signal (BFD RS) sets configured by a network side device, and obtains a measurement result; in the case where it is determined according to the measurement result that the at least two BFD RS sets satisfy a beam failure condition, the terminal sends a target beam failure recovery request (BFRQ); the terminal receives a beam failure recovery response (BFRR) corresponding to the target BFRQ; and the terminal resets a transmission configuration indication (TCI) state of part of channels or all channels according to target beam information carried by the target BFRQ, and / or resets a configuration parameter of uplink power control according to the target beam information.

Description

Technical Field

[0001] This application belongs to the field of communication technology, specifically relating to a beam failure recovery method, a terminal, and network-side equipment. Background Technology

[0002] In high-frequency communication systems, due to the shorter wavelength of wireless signals, signal propagation is more easily blocked, leading to signal interruption and affecting data transmission.

[0003] The network-side equipment configures a beam failure detection reference signal for the terminal. The terminal measures the beam failure detection reference signal at the physical layer to determine whether a beam failure event has occurred. If a beam failure event occurs, it indicates that the beam link has been interrupted. If the beam link is not restored, it will affect data transmission and reduce the reliability of data transmission. Summary of the Invention

[0004] This application provides a beam failure recovery method, a terminal, and a network-side device, which can solve the problem of beam link interruption and reduced data transmission reliability.

[0005] Firstly, a beam failure recovery method is provided, the method comprising:

[0006] The terminal measures at least two sets of Beam Failure Detection Reference Signals (BFD RS) configured on the network-side equipment to obtain measurement results;

[0007] If, based on the measurement results, it is determined that at least two BFD RS sets meet the beam failure condition, the terminal sends a target beam failure recovery request (BFRQ).

[0008] The terminal receives the beam failure recovery response (BFRR) corresponding to the target BFRQ;

[0009] The terminal resets the Transmission Configuration Indicator (TCI) status of some or all channels based on the target beam information carried by the target BFRQ, and / or resets the configuration parameters of uplink power control based on the target beam information.

[0010] Secondly, a beam failure recovery device is provided, comprising:

[0011] The acquisition module is used to measure at least two sets of beam failure detection reference signals (BFD RS) configured on the network-side device and obtain the measurement results.

[0012] The transmitting module is configured to transmit a target beam failure recovery request (BFRQ) when it is determined, based on the measurement results, that the at least two BFD RS sets meet the beam failure condition.

[0013] The receiving module is used to receive the beam failure recovery response (BFRR) corresponding to the target BFRQ.

[0014] The reset module is used to reset the Transmission Configuration Indicator (TCI) status of some or all channels according to the target beam information carried by the target BFRQ, and / or to reset the configuration parameters of uplink power control according to the target beam information.

[0015] Thirdly, a beam failure recovery method is provided, the method comprising:

[0016] Network-side equipment is configured with at least two Beam Failure Detection Reference Signal (BFD RS) sets for the terminal;

[0017] The network-side device receives a Target Beam Failure Recovery Request (BFRQ).

[0018] The network-side device sends a beam failure recovery response (BFRR) corresponding to the target BFRQ.

[0019] Fourthly, a beam failure recovery device is provided, comprising:

[0020] The configuration module is used to configure at least two beam failure detection reference signal (BFD RS) sets for the terminal;

[0021] The receiving module is used to receive the Target Beam Failure Recovery Request (BFRQ).

[0022] The transmitting module is used to transmit the beam failure recovery response (BFRR) corresponding to the target BFRQ.

[0023] Fifthly, a terminal is provided, the terminal including a processor, a memory, and a program or instructions stored in the memory and executable on the processor, wherein the program or instructions, when executed by the processor, implement the steps of the method described in the first aspect.

[0024] In a sixth aspect, a terminal is provided, including a processor and a communication interface, wherein the processor is configured to measure at least two sets of beam failure detection reference signals (BFD RS) configured by a network-side device, obtain measurement results, and reset the transmission configuration indication (TCI) status of some or all channels according to the target beam information carried by the target BFRQ, and / or reset the configuration parameters of uplink power control according to the target beam information; the communication interface is configured to send a target beam failure recovery request (BFRQ) when it is determined, based on the measurement results, that the at least two sets of BFD RS meet the beam failure conditions; and receive a beam failure recovery response (BFRR) corresponding to the target BFRQ.

[0025] In a seventh aspect, a network-side device is provided, the network-side device including a processor, a memory, and a program or instructions stored in the memory and executable on the processor, wherein the program or instructions, when executed by the processor, implement the steps of the method as described in the third aspect.

[0026] Eighthly, a network-side device is provided, including a processor and a communication interface, wherein the processor is configured to configure at least two sets of beam failure detection reference signals (BFD RS) for a terminal; the communication interface is configured to receive a target beam failure recovery request (BFRQ) and send a beam failure recovery response (BFRR) corresponding to the target BFRQ.

[0027] A ninth aspect provides a readable storage medium on which a program or instructions are stored, which, when executed by a processor, implement the steps of the method described in the first aspect, or implement the steps of the method described in the third aspect.

[0028] In a tenth aspect, a chip is provided, the chip including a processor and a communication interface coupled to the processor, the processor being configured to run programs or instructions to implement the method as described in the first aspect, or to implement the method as described in the third aspect.

[0029] Eleventhly, a computer program / program product is provided, the computer program / program product being stored in a non-volatile storage medium, the program / program product being executed by at least one processor to implement the steps of the beam failure recovery method as described in the first or third aspect.

[0030] In this embodiment, the terminal measures at least two sets of Beam Failure Detection Reference Signals (BFD RS) configured by the network-side equipment to obtain measurement results. If, based on the measurement results, the at least two sets of BFD RS satisfy the beam failure condition, the terminal sends a Target Beam Failure Recovery Request (BFRQ). The terminal receives a Beam Failure Recovery Response (BFRR) corresponding to the target BFRQ. The terminal resets the Transmission Configuration Indicator (TCI) status of some or all channels based on the target beam information carried by the target BFRQ, and / or resets the uplink power control configuration parameters based on the target beam information. This method enables the terminal to quickly restore interrupted beam links, improving the reliability of data transmission. Attached Figure Description

[0031] Figure 1 This is a structural diagram of a network system provided in an embodiment of this application;

[0032] Figure 2 This is a flowchart of a beam failure recovery method provided in an embodiment of this application;

[0033] Figure 3 This is another flowchart of the beam failure recovery method provided in the embodiments of this application;

[0034] Figure 4 This is a structural diagram of the beam failure recovery device provided in an embodiment of this application;

[0035] Figure 5 This is another structural diagram of the beam failure recovery device provided in the embodiments of this application;

[0036] Figure 6 This is a structural diagram of the communication device provided in the embodiments of this application;

[0037] Figure 7 This is a structural diagram of the terminal provided in the embodiments of this application;

[0038] Figure 8 This is a structural diagram of the network-side device provided in the embodiments of this application. Detailed Implementation

[0039] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0040] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same class, not limited in number; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0041] It is worth noting that the technologies described in this application are not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), and other systems. The terms "system" and "network" in this application are often used interchangeably, and the described technologies can be used with the systems and radio technologies mentioned above, as well as with other systems and radio technologies. The following description describes New Radio (NR) systems for illustrative purposes, and NR terminology is used in most of the following description; however, these technologies can also be applied to applications beyond NR systems, such as 6th generation (6G) radio systems. th Generation 6G communication system.

[0042] Figure 1This diagram illustrates a block diagram of a wireless communication system applicable to embodiments of this application. The wireless communication system includes a terminal 11 and a network-side device 12. The terminal 11 can also be referred to as a terminal device or user equipment (UE). Terminal 11 can be a mobile phone, tablet computer, laptop computer, personal digital assistant (PDA), handheld computer, netbook, ultra-mobile personal computer (UMPC), mobile internet device (MID), wearable device, vehicle-mounted device (VUE), pedestrian terminal (PUE), etc. Wearable devices include smartwatches, wristbands, headphones, glasses, etc. It should be noted that this application does not limit the specific type of terminal 11. Network-side device 12 can be a base station or a core network. The base station can be referred to as a node B, evolved node B, access point, base transceiver station (BTS), radio base station, radio transceiver, basic service set (BSS), extended service set (ESS), B node, evolved B node (eNB), home B node, home evolved B node, WLAN access point, WiFi node, transmitting and receiving point (TRP), or any other suitable term in the field, as long as the same technical effect is achieved. The base station is not limited to specific technical terms. It should be noted that in this application embodiment, only the base station in the NR system is used as an example, but the specific type of base station is not limited.

[0043] The beam failure recovery method provided in this application will be described in detail below with reference to the accompanying drawings and through some embodiments and application scenarios.

[0044] Figure 2 The diagram shown is a flowchart of a beam failure recovery method provided in an embodiment of this application. Figure 2 As shown, the beam failure recovery method provided in this embodiment includes:

[0045] Step 201: The terminal measures at least two sets of Beam Failure Detection Reference Signals (BFD RS) configured on the network-side device and obtains the measurement results.

[0046] The terminal measures at least two sets of Beam Failure Detection Reference Signals (BFD RS). The network-side device can configure the BFD RS sets explicitly or implicitly. For example, in the explicit indication method, a new domain indicator control resource set pool index (i.e., CORESETPoolindex) or control resource group identifier (CORESETGroupID) is added to the BFD RS set. In the implicit indication method, the association between the BFD RS and CORESETPoolindex or CORESETGroupID is obtained based on the implicit configuration of the BFD RS.

[0047] The at least two BFD RS sets include at least one of the following:

[0048] A set of BFD RSs corresponding to one or more transmit / receive points (TRPs) in the same cell;

[0049] A set of BFD RS corresponding to one or more transmit / receive points (TRPs) in different cells;

[0050] A BFD RS set corresponding to one or more cells.

[0051] In other words, at least one of the at least two BFD RS sets may correspond to one or more TRPs, and / or at least one of the at least two BFD RS sets may correspond to some TRPs in the primary cell, or to some TRPs in the secondary cell, or to the primary cell, or to the secondary cell, or to multiple cells.

[0052] The TRP corresponding to the aforementioned BFD RS set can be indicated by the control resource set pool index (i.e., CORESETPoolindex) and / or the control resource group identifier (CORESETGroupID). Furthermore, the TRP can also be indicated by the BFD RS set identifier (i.e., BFD RS set ID) or the identifier of the NBI RS set.

[0053] Step 202: If, based on the measurement results, it is determined that at least two BFD RS sets meet the beam failure condition, the terminal sends a target beam failure recovery request (BFRQ).

[0054] The terminal measures each of the at least two BFD RS sets and determines whether a beam failure event has occurred in each BFD RS set based on the measurement results. A beam failure condition can be that one or more of the at least two BFD RS sets have experienced beam failure. If the at least two BFD RS sets meet the beam failure condition, the terminal sends a target BFRQ to the network-side device.

[0055] Step 203: The terminal receives the Beam Failure Recovery Response (BFRR) corresponding to the target BFRQ.

[0056] Step 204: The terminal resets the Transmission Configuration Indication (TCI) status of some or all channels according to the target beam information carried by the target BFRQ, and / or resets the configuration parameters of uplink power control according to the target beam information.

[0057] In this embodiment, the terminal measures at least two sets of Beam Failure Detection Reference Signals (BFD RS) configured by the network-side device to obtain measurement results. If, based on the measurement results, the at least two sets of BFD RS satisfy the beam failure condition, the terminal sends a target BFRQ. The terminal receives the BFRR corresponding to the target BFRQ. The terminal resets the TCI state of some or all channels based on the target beam information carried by the target BFRQ, and / or resets the uplink power control configuration parameters based on the target beam information. When the terminal detects that the at least two sets of BFD RS satisfy the beam failure condition, it sends the target BFRQ to the network-side device, enabling the network-side device and the terminal to quickly restore the interrupted beam link and improve the reliability of data transmission.

[0058] It should be noted that when available uplink resources exist, the target BFRQ includes a BFR MAC CE, and the BFR MAC CE includes beam failure recovery information for the BFD RS set where beam failure occurred; when the terminal currently has no available uplink grant and the network-side device has configured PUCCH resources for transmission scheduling requests, the target BFRQ includes a scheduling request and a BFR MAC CE; when the terminal currently has no available uplink grant and the network-side device has not configured PUCCH resources for transmission scheduling requests, the target BFRQ includes a RACH sequence, a scheduling request, and a BFR MAC CE.

[0059] The following describes the beam failure recovery methods provided in this application under different circumstances.

[0060] The first scenario: The at least two BFD RS sets include a first BFD RS set and a second BFD RS set, and the first BFD RS set and the second BFD RS set correspond to different TRPs of the first cell.

[0061] In the first case, there is a beam failure in one BFD RS set, that is, the beam failure condition is that a beam failure occurs in either the first BFD RS set or the second BFD RS set.

[0062] Accordingly, the terminal sending a Target Beam Failure Recovery Request (BFRQ) includes any one of the following:

[0063] Send the target BFRQ on the nearest available uplink grant;

[0064] If only one Physical Uplink Control Channel (PUCCH) is configured in the cell group where the first cell is located for sending beam failure recovery requests, the target BFRQ is sent through this PUCCH.

[0065] In the case where multiple PUCCHs for sending beam failure recovery requests are configured in the cell group where the first cell is located, the target BFRQ is sent through the PUCCH in the first cell associated with the set of failed or non-failed BFD RSs;

[0066] When the network-side device is configured with non-contention-based random access (CFRA), the target BFRQ is sent via CFRA;

[0067] If the network-side equipment is not configured with non-contention-based random access (CFRA), the target BFRQ is sent via contention-based random access (CBRA).

[0068] Specifically, if a beam failure occurs in either the first BFD RS set or the second BFD RS set, and the network-side equipment is configured with an NBI RS set, the UE will obtain a new beam by measuring the NBI RS.

[0069] The terminal sending the target BFRQ on the most recent available uplink (UL) grant can be understood as the terminal sending a BFR media access control (MAC) control element (CE) on the most recent available UL grant, which includes beam failure recovery (BFR) information corresponding to the failed BFD RS set.

[0070] In the first case, there are two BFD RS sets that have experienced beam failure, i.e., the beam failure condition includes the first BFD RS set experiencing beam failure, and the terminal is in the process of requesting beam failure recovery for the second BFD RS set experiencing beam failure.

[0071] Accordingly, the first cell is the primary cell, and the target BFRQ includes beam failure recovery information of the first BFD RS set;

[0072] Accordingly, the terminal sending a Target Beam Failure Recovery Request (BFRQ) includes any one of the following:

[0073] Send the target BFRQ on the nearest available uplink grant;

[0074] When only one Physical Uplink Control Channel (PUCCH) is configured in the cell group where the first cell is located for sending beam failure recovery requests, the target BFRQ is sent through this PUCCH.

[0075] In the case where multiple PUCCHs for sending beam failure recovery requests are configured in the cell group where the first cell is located, the target BFRQ is sent through the nearest PUCCH among the multiple PUCCHs;

[0076] In the case where multiple PUCCHs for transmitting beam failure recovery requests are configured in the cell group to which the first cell belongs, the target BFRQ is transmitted through the PUCCH associated with the first BFD RS set or the second BFD RS set.

[0077] Multiple PUCCHs for sending beam failure recovery requests are configured in the cell group where the first cell is located. When the terminal receives a beam failure recovery response (BFRR) corresponding to the second BFD RS set, the target BFRQ is sent through the nearest PUCCH associated with the first BFD RS set or the second BFD RS set.

[0078] When the terminal receives the BFRR corresponding to the second BFD RS set, the target BFRQ is sent on the uplink grant scheduled by the BFRR corresponding to the second BFD RS set.

[0079] When the network-side device is configured with a CFRA associated with the first BFD RS set, the target BFRQ is sent via the CFRA;

[0080] If the network-side device is not configured with a CFRA associated with the first BFD RS set, the target BFRQ is sent via CBRA.

[0081] Specifically, if a beam failure is determined to have occurred in the first BFD RS set, and at least one second BFD RS set in the same cell also experiences a beam failure during the BFRQ process, the beam failure recovery request (BFRQ) procedure can be one of the following:

[0082] The signal is generated at the moment when the BFD RS set beam failure is announced, or at the last symbol of the last NBI RS resource in the NBI RS set associated with the BFD RS set that has experienced beam failure, or at the first symbol of the available UL grant, and ends at the last symbol of the HARQ-ACK corresponding to the UL grant received by the UE, or at the first or last symbol of the BFRR, or after the completion of PDCCH decoding.

[0083] If CFRA resources are configured, the announcement of BFD RS set beam failure can be made at the moment when the beam failure occurs, or at the last symbol of the last NBI RS resource in the NBI RS set associated with the BFDRS set that has experienced beam failure, or starting from the first symbol of CFRA and ending when the UE receives the first or last symbol of BFRR, or completes PDCCH decoding and verification, or when the Kth CFRA transmission is completed, where K transmissions are the maximum allowed number of CFRA transmissions configured by the network-side equipment.

[0084] If no CFRA resource is configured, the time to announce the beam failure of the BFD RS set, or the last symbol of the last NBI RS resource in the NBI RS set associated with the BFDRS set that has experienced beam failure, or the start of the first symbol of the CBRA, and the end when the UE receives the first or last symbol of the BFRR, or completes the PDCCH decoding and verification, or completes the Msg3 transmission in the Pth CBRA, wherein the Pth transmission is the maximum number of CBRA transmissions allowed configured by the network-side equipment;

[0085] The signal transmission begins at the moment when the BFD RS set beam failure is announced, or at the last symbol of the last NBI RS resource in the NBI RS set associated with the BFD RS set where beam failure occurred, or at the first symbol of the PUCCH resource closest to the moment of beam failure among all PUCCH resources configured by the network-side device, and ends when the UE receives the first or last symbol of the BFRR, or completes PDCCH decoding and verification, or completes the Qth SR transmission. The Qth transmission is the maximum number of allowed scheduling request transmissions configured by the network-side device.

[0086] When the above situation occurs in the primary cell, if the network-side equipment is configured with an NBI RS set, the UE will measure the NBI RS to obtain a new beam. The UE can then send the target BFRQ using any of the following methods:

[0087] The UE may continue with the BFRQ procedure corresponding to the second BFD RS set, and perform the BFRQ procedure corresponding to the first BFD RS set in any of the following ways:

[0088] Send the first BFR MAC CE on the most recently available UL grant;

[0089] If only one PUCCH resource is configured in the cell group where the first cell is located for sending scheduling requests after beam failure recovery, the UE will use this PUCCH resource to send scheduling requests.

[0090] If multiple PUCCH resources for beam failure recovery and scheduling request transmission are configured in the cell group where the first cell is located, any of the following methods can be adopted:

[0091] Send a scheduling request on the nearest PUCCH resource; send a scheduling request on the PUCCH resource associated with the first BFD RS set or the second BFD RS set; after the UE receives the BFRR corresponding to the second BFD RS set, send a scheduling request on the nearest PUCCH resource associated with the first BFD RS set or the second BFD RS set.

[0092] After the UE receives the BFRR corresponding to the second BFD RS set, it sends the first BFR MAC CE on the UL grant scheduled by the BFRR.

[0093] If the network-side device is configured with a CFRA associated with the first BFD RS set, and the terminal finds a new beam corresponding to the first BFD RS set, then the BFRQ information corresponding to the first BFD RS set is sent through the CFRA. Otherwise, if the network-side device is configured with a CFRA associated with the first BFD RS set, and the terminal finds a new beam corresponding to the first BFD RS set, then the BFRQ information is sent through the CFRA.

[0094] The first BFR MAC CE mentioned above includes at least one of the following: the identifier of the first BFR RS set and the new beam information corresponding to the first BFD RS set.

[0095] The aforementioned CBRA can be: a CBRA configured by the network-side equipment and associated with the first BFD RS set; or a CBRA configured by the network-side equipment and associated with the primary cell. When the target BFRQ is transmitted using the CBRA, if the new beam carried by the target BFRQ is associated with the second BFD RS set, the UE falls back to STRP.

[0096] In a primary cell, where the beam failure condition includes a beam failure in the first BFD RS set and the terminal is in the beam failure recovery request process for a beam failure in the second BFD RS set, if the BFRQ process corresponding to the second BFD RS set only proceeds up to before the second BFR MAC CE is placed on the PUSCH for transmission, or if the second BFR MAC CE corresponding to the second BFD RS set has been transmitted on the PUSCH but not multiplexed with the UL-SCH, the UE can continue the BFRQ process corresponding to the second BFD RS set and begin the BFRQ process corresponding to the first BFD RS set, or the UE can interrupt the BFRQ process corresponding to the second BFD RS set and use CBRA to transmit a target BFRQ, the target BFRQ also including beam failure recovery information for the second BFD RS set. The second BFR MAC CE contains at least one of the following: the identifier of the second BFD RS set and the new beam information corresponding to the second BFD RS set.

[0097] In the first case, there are two BFD RS sets that experience beam failure, i.e., the beam failure condition includes the first BFD RS set experiencing beam failure, and the terminal is in the process of requesting beam failure recovery for the second BFD RS set experiencing beam failure.

[0098] Correspondingly, the first cell is a secondary cell, and the target BFRQ includes beam failure recovery information of the first BFD RS set;

[0099] Accordingly, the terminal sending a Target Beam Failure Recovery Request (BFRQ) includes any one of the following:

[0100] Send the target BFRQ on the nearest available uplink grant;

[0101] In the case where multiple PUCCHs for sending beam failure recovery requests are configured in the cell group where the first cell is located, the target BFRQ is sent through the nearest PUCCH associated with the first BFD RS set;

[0102] In the case where multiple PUCCHs for transmitting beam failure recovery requests are configured in the cell group where the first cell is located, the target BFRQ is transmitted through the PUCCH associated with the first BFD RS set or the second BFD RS set;

[0103] Multiple PUCCHs for sending beam failure recovery requests are configured in the cell group where the first cell is located. When the terminal receives the BFRR corresponding to the second BFD RS set, the target BFRQ is sent through the nearest PUCCH associated with the first BFD RS set or the second BFD RS set.

[0104] When the terminal receives the BFRR corresponding to the second BFD RS set, the target BFRQ is sent on the uplink grant scheduled by the BFRR corresponding to the second BFD RS set.

[0105] When the first cell is the secondary cell, and the beam failure conditions include beam failure of the first BFD RS set and the terminal is in the beam failure recovery request process of the second BFD RS set, if the first BFD RS set has beam failed and the BFRQ corresponding to the second BFD RS set has not been sent on the PUSCH, or if the first BFD RS set has beam failed, the BFRQ corresponding to the second BFD RS set has been sent on the PUSCH, and the PUSCH is not multiplexed with the uplink shared transport channel UL-SCH, then the beam failure recovery request process corresponding to the second BFD RS set will continue or be interrupted, and the target BFRQ will be sent by at least one of the following:

[0106] Send the target BFRQ on the nearest available uplink grant;

[0107] If a PUCCH for sending beam failure recovery requests is configured in the cell group where the first cell is located, the target BFRQ is sent through the PUCCH.

[0108] In the case where multiple PUCCHs for sending beam failure recovery requests are configured in the cell group where the first cell is located, the target BFRQ is sent by selecting one PUCCH from the multiple PUCCHs according to the fourth preset rule;

[0109] The target BFRQ is transmitted via CFRA or CBRA in the primary cell of the cell group to which the first cell is located.

[0110] In the first scenario, and where two BFD RS sets experience beam failure (i.e., the beam failure condition includes simultaneous beam failure of both the first and second BFD RS sets), and the first cell is the primary cell, the terminal transmits the target BFRQ via CBRA.

[0111] In the first scenario, and where two BFD RS sets experience beam failure (i.e., the beam failure condition includes simultaneous beam failure of both the first and second BFD RS sets), if the first cell is a secondary cell, the terminal can transmit the target BFRQ using at least one of the following methods:

[0112] Send the target BFRQ on the nearest available uplink grant;

[0113] In the case where multiple PUCCHs are configured in the cell group where the first cell is located for sending beam failure recovery requests, the target BFRQ is sent from one of the multiple PUCCHs according to the fifth preset rule.

[0114] In the above, the simultaneous beam failure of the first BFD RS set and the second BFD RS set can be understood as follows: when the first BFD RS set experiences beam failure, the second BFD RS set has already experienced beam failure but has not yet entered the BFRQ process, or the network-side device predefines a time window, and the UE considers both BFD RS sets to have failed within this time window.

[0115] The target BFRQ includes at least one of the following: the identifier of the first BFR RS set, the identifier of the second BFD RS set, the new beam information corresponding to the first BFD RS set, and the new beam information corresponding to the second BFD RS set.

[0116] When the beam failure condition includes a beam failure in the first BFD RS set and the terminal is in the beam failure recovery request process for a beam failure in the second BFD RS set, the target BFRQ includes at least one of the following: the identifier of the first BFD RS set, the identifier of the second BFD RS set, the new beam information corresponding to the first BFD RS set, and the new beam information corresponding to the second BFD RS set. The BFD RS set identifier can be indicated by CORESETPoolindex or CORESETGroupID.

[0117] After receiving the BFRR, the terminal can reset the TCI state of the control resource set (CORESET) associated with the first BFD RS set, and / or the TCI state of the CORESET associated with the second BFD RS set, based on the target beam information. The target beam information is the new beam information carried in the target BFRQ.

[0118] In the second scenario, the at least two BFD RS sets include a first BFD RS set, a second BFD RS set, and a third BFD RS set. The first BFD RS set and the second BFD RS set correspond to different TRPs of the first cell, and the third BFD RS set corresponds to the first cell.

[0119] In the second case, the beam failure condition includes at least one of the following:

[0120] Both the first BFD RS set and the second BFD RS set experienced beam failure within the first preset time window;

[0121] The third BFD RS set experienced beam failure;

[0122] All BFD RS sets configured in the first cell experienced beam failure within the second preset time window.

[0123] If the network-side device is configured with a first NBI RS set and a second NBI RS set to obtain new beams for different TRPs of the first cell, and a third NBI RS set to obtain new beams for the first cell, then the UE will measure all RSs in all sets to find new beams; wherein, the first NBI RS set corresponds to the first BFD RS set, the second NBI RS set corresponds to the second BFD RS set, and the third NBI RS set corresponds to the third BFD RS set;

[0124] The first NBI RS set and the second NBI RS set correspond to different TRPs; the third NBI RS set can be configured with RRC, or can be directly composed of the first NBI RS set and the second NBI RS set.

[0125] In the second scenario, where the first cell is the primary cell, if the beam failure condition is that both the first and second BFD RS sets fail within a first preset time window, and / or the third BFD RS set experiences beam failure, the terminal sends the target BFRQ in at least one of the following ways:

[0126] If the network-side device is configured with CFRA resources, then CFRA is used to send BFRQ information;

[0127] If the network is not configured with CFRA resources, BFRQ information is sent via CBRA;

[0128] In this case, the target BFRQ includes a new beam learned from the third NBI RS set, but does not contain the identifier of the failed BFD RS set.

[0129] After receiving the BFRR, the terminal will reset the TCI state of at least all CORESETs according to the information of the new beam in the target BFRQ, or at least reset the TCI state of the CORESET corresponding to the new beam.

[0130] In the second case, the beam failure condition includes the beam failure of the third BFD RS set, and the beam failure of the first BFD RS set and the second BFD RS set before the beam failure of the third BFD RS set.

[0131] The first cell is the primary cell, and the target BFRQ includes the beam failure recovery information of the third BFD RS set;

[0132] If, based on the measurements, it is determined that at least two BFD RS sets satisfy the beam failure condition, the terminal sends a Target Beam Failure Recovery Request (BFRQ), including:

[0133] The beam failure recovery request process corresponding to the first BFD RS set and the second BFD RS set is interrupted, and the target BFRQ is sent via CFRA, CBRA, or available uplink grant, or PUCCH corresponding to the third BFD RS set. The target BFRQ includes new beam information obtained from the third NBI RS set, but does not include the identifier of the failed BFD RS set. Further, the TCI status of the corresponding CORESET is reset according to the new beam information (i.e., target beam information) obtained from the third NBI RS set, or the TCI status of all CORESETs corresponding to the first cell is reset.

[0134] or,

[0135] In the event of a conflict between the beam failure recovery request process corresponding to the first BFD RS set and the beam failure recovery request process corresponding to the third BFD RS set, for example, if the BFRQ process corresponding to the first BFD RS set is later than the BFRQ process corresponding to the second BFD RS set, and the BFRQ process corresponding to the first BFD RS set conflicts with the BFRQ process corresponding to the third BFD RS set, the beam failure recovery request process corresponding to the first BFD RS set is interrupted, and the BFRQ process corresponding to the second BFD RS set continues. The terminal does not initiate scheduling requests or random access, and transmits the target BFRQ on the uplink grant for transmitting the BFRQ corresponding to the second BFD RS set. The target BFRQ also includes beam failure recovery information of the second BFD RS set.

[0136] Alternatively, if the beam failure recovery request process corresponding to the first BFD RS set conflicts with the beam failure recovery request process corresponding to the third BFD RS set, for example, if the BFRQ process corresponding to the first BFD RS set is later than the BFRQ process corresponding to the second BFD RS set, and the BFRQ process corresponding to the first BFD RS set conflicts with the BFRQ process corresponding to the third BFD RS set, the beam failure recovery request process corresponding to the first BFD RS set is interrupted, and the BFRQ process corresponding to the second BFD RS set continues. The target BFRQ is sent via CFRA, CBRA, or an available uplink grant, or via the PUCCH corresponding to the third BFD RS set.

[0137] or,

[0138] Continue the BFRQ process corresponding to the first BFD RS set and the second BFD RS set respectively, and start the BFRQ process corresponding to the third BFD RS set. Transmit the target BFRQ on the uplink grant for transmitting the BFRQ corresponding to the second BFD RS set. The target BFRQ also includes beam failure recovery information of the first BFD RS set and / or beam failure recovery information of the second BFD RS set. That is, the BFR MAC CE corresponding to the first BFD RS set and the second BFD RS set respectively are transmitted in the same ULgrant as the BFR MAC CE corresponding to the third BFD RS set.

[0139] or,

[0140] Continue the BFRQ process corresponding to the first BFD RS set and the second BFD RS set respectively, and start the BFRQ process corresponding to the third BFD RS set. Send the BFRQ corresponding to the first BFD RS set through CFRA, CBRA, or available uplink grant, or PUCCH corresponding to the first BFD RS set, and transmit the target BFRQ on the uplink grant for transmitting the BFRQ corresponding to the second BFD RS set. The target BFRQ may also include beam failure recovery information of the second BFD RS set. That is, the BFRQ information (i.e., beam failure recovery information) corresponding to the first BFD RS set can be sent through UL grant or PUCCH resources or CFRA or CBRA, and the BFR MAC CE corresponding to the second BFD RS set and the BFR MAC CE corresponding to the third BFD RS set are transmitted in the same UL grant.

[0141] Alternatively, the BFRQ corresponding to the first BFD RS set and the BFRQ corresponding to the second BFD RS set can be sent via CFRA, CBRA, or available uplink grant, or via the PUCCH corresponding to the first BFD RS set and the second BFD RS set, respectively, and the target BFRQ can be sent via CFRA, CBRA, or available uplink grant, or via the PUCCH corresponding to the third BFD RS set. That is, the BFRQ information corresponding to the first BFD RS set and the second BFD RS set can be sent via their corresponding UL grant or PUCCH resources or CFRA (if configured) or CBRA, respectively, and the BFRQ information corresponding to the third BFD RS set can be transmitted via CFRA (if configured) or CBRA.

[0142] In the second case, the beam failure condition includes the beam failure of the third BFD RS set, and the beam failure of the first BFD RS set and the second BFD RS set before the beam failure of the third BFD RS set.

[0143] The first cell is the primary cell, and the target BFRQ includes the beam failure recovery information of the third BFD RS set;

[0144] The terminal resets the Transmission Configuration Indicator (TCI) status of some or all channels based on the target beam information carried by the target BFRQ, and / or resets the configuration parameters of uplink power control based on the target beam information, including:

[0145] If the terminal interrupts the beam failure recovery request process corresponding to the first BFD RS set and the second BFD RS set respectively, the TCI state of the corresponding CORESET is reset according to the target beam information, or the TCI state of all CORESETs corresponding to the first cell is reset.

[0146] or,

[0147] If the terminal interrupts the beam failure recovery request process corresponding to the first BFD RS set, continues to execute the beam failure recovery request process corresponding to the second BFD RS set, and starts the beam failure recovery request process corresponding to the third BFD RS set, if the first new beam information carried by the BFRQ associated with the second BFD RS set corresponds to the same TRP as the target beam information, then the TCI status of the corresponding CORESET or the TCI status of all CORESETs corresponding to the first cell is reset according to the target beam information.

[0148] or,

[0149] If the terminal interrupts the beam failure recovery request process corresponding to the first BFD RS set, continues to execute the beam failure recovery request process corresponding to the second BFD RS set, and starts the beam failure recovery request process corresponding to the third BFD RS set, if the first new beam information carried by the BFRQ associated with the second BFD RS set corresponds to a different TRP as the target beam information, then the TCI state of the corresponding CORESET is reset according to the target beam information, and the TCI state of the corresponding CORESET is reset according to the first new beam information.

[0150] Alternatively, if the terminal continues to execute the beam failure recovery request process corresponding to the first BFD RS set and the second BFD RS set respectively, and starts the beam failure recovery request process corresponding to the third BFD RS set, the TCI state of the CORESET corresponding to the new beam information of each of the first BFD RS set and the second BFD RS set is reset according to the new beam information carried by the BFRQ associated with each of the first BFD RS set and the second BFD RS set, and the TCI state of the corresponding CORESET is reset according to the target beam information;

[0151] or,

[0152] When the terminal continues to execute the beam failure recovery request process corresponding to the first BFD RS set and the second BFD RS set respectively, and starts the beam failure recovery request process corresponding to the third BFD RS set, the TCI status of the corresponding CORESET is reset according to the target beam information, or the TCI status of all CORESETs corresponding to the first cell is reset.

[0153] or,

[0154] When the terminal continues to execute the beam failure recovery request process corresponding to the first BFD RS set and the second BFD RS set respectively, and starts the beam failure recovery request process corresponding to the third BFD RS set, the second new beam information and the third new beam information are selected from the candidate new beam information according to the third preset rule to reset the TCI state of their respective CORESETs, or the TCI state of all CORESETs corresponding to the first cell is reset. The second new beam information and the third new beam information are associated with different BFD RS sets. The third preset rule can be based on the principle of closest time, resetting the TCI state of the corresponding CORESET with the latest new beam (i.e., the NBI RS resource corresponding to the new beam is closest to the BFRQ information transmission); or based on the principle of best quality, resetting the TCI state of the corresponding CORESET with the new beam with the highest RS measurement value.

[0155] The candidate new beam information includes the new beam information carried by the BFRQ associated with the first BFD RS set, the new beam information carried by the BFRQ associated with the second BFD RS set, and the target beam information.

[0156] In the second case, the beam failure condition includes the beam failure of the third BFD RS set, and the beam failure of the first BFD RS set and the second BFD RS set before the beam failure of the third BFD RS set.

[0157] Correspondingly, the first cell is a secondary cell, and the target BFRQ includes the beam failure recovery information of the third BFD RS set;

[0158] Accordingly, the terminal sending a Target Beam Failure Recovery Request (BFRQ) includes any one of the following:

[0159] Send the target BFRQ on the nearest available uplink grant;

[0160] If only one PUCCH is configured in the cell group where the first cell is located for sending beam failure recovery requests, the target BFRQ is sent through the PUCCH.

[0161] In the case where multiple PUCCHs are configured in the cell group to which the first cell is located for sending beam failure recovery requests, the target BFRQ is sent by selecting one PUCCH from the multiple PUCCHs according to the first preset rule.

[0162] In the third scenario, the at least two BFD RS sets include a first BFD RS set, a second BFD RS set, and a fourth BFD RS set. The first BFD RS set and the second BFD RS set correspond to different TRPs of the first cell. The fourth BFD RS set is either the BFD RS set corresponding to the second cell or the BFD RS set corresponding to a TRP in the second cell. The second cell and the first cell are in the same cell group.

[0163] For example, the network-side equipment is configured with a first BFD RS set, a second BFD RS set, a third BFD RS set, a fourth BFD RS set, and a fifth BFD RS set. The first and second BFD RS sets correspond to different TRPs of the first cell, and the fourth BFD RS set can correspond to the second cell or its TRP. The fourth and fifth BFD RS sets can correspond to different TRPs of the same cell, or to different cells. The third BFD RS set can be configured selectively.

[0164] The terminal measures each of the at least two BFD RS sets. If the measurement results indicate that the first BFD RS set or the second BFD RS set has experienced beam failure, the terminal will handle the situation in accordance with the method for beam failure of the first BFD RS set or the BFD RS set described in the previous embodiment.

[0165] If, based on the measurement results, it is determined that the first BFD RS set or the second BFD RS set has failed to transmit a beam, and the fourth BFD RS set also experiences a beam failure, then the fourth BFD RS set corresponds to the second cell. The cell identifiers or physical cell identifiers corresponding to the first cell and the second cell may be the same or different.

[0166] If the network-side device is configured with an NBI RS set associated with the BFD RS set, the UE measures each NBI RS set to find the corresponding new beam; generates a third BFR MAC CE based on the failure information and new beam information of the first or second BFD RS set, and generates a fourth BFR MAC CE based on the failure information and new beam information of the fourth BFD RS set.

[0167] The UE may transmit the target BFRQ in any of the following ways:

[0168] Send the third BFR MAC CE and the fourth BFR MAC CE on the most recent available UL grant, that is, send the BFRQ corresponding to the target BFD RS set and the target BFRQ on the most recent available uplink grant, wherein the target BFD RS set is the first BFD RS set or the second BFD RS set where beam failure occurred.

[0169] If only one PUCCH is configured in the cell group where the second cell is located for sending beam failure recovery requests, the target BFRQ is sent through this PUCCH;

[0170] In the case where multiple PUCCHs for sending beam failure recovery requests are configured in the cell group where the second cell is located, the target BFRQ is sent by selecting one PUCCH from the multiple PUCCHs according to the second preset rule;

[0171] When the network-side device is configured with non-contention-based random access (CFRA), the target BFRQ is sent via CFRA;

[0172] If the network-side equipment is not configured with non-contention-based random access (CFRA), the target BFRQ is sent via CBRA.

[0173] If the network-side device is configured with CBRA resources associated with a BFD RS set, then BFRQ information is sent using CBRA resources associated with either failed or non-failed BFD RS sets in the primary cell; otherwise, if a non-failed BFD RS set is associated with new beam information carried by the CBRA resources, then STRP is returned.

[0174] In the above, the second preset rule includes any one of the following:

[0175] Select the most recent PUCCH from multiple PUCCHs;

[0176] Select a PUCCH from among the multiple PUCCHs that is associated with a BFD RS set that has failed or not failed from the at least two BFD RS sets;

[0177] Select the PUCCH associated with the fourth BFD RS set from among the multiple PUCCHs;

[0178] Select the PUCCH corresponding to the primary cell in the cell group where the second cell is located from multiple PUCCHs.

[0179] If the target BFRQ contains new beam information, after the UE receives the BFRR, it will reset at least the TCI state of the CORESET associated with the BFD RS set where the beam failure occurred, according to the new beam information of the target BFRQ.

[0180] The terminal measures each of the at least two BFD RS sets. If, based on the measurement results, it is determined that the first BFD RS set or the second BFD RS set has failed to transmit a beam, and the fourth BFD RS set has also failed to transmit a beam, the fourth BFD RS set corresponds to a TRP in the second cell. The second cell includes at least two TRPs. The cell identifiers or physical cell identifiers corresponding to the first cell and the second cell may be the same or different.

[0181] If the network-side device is configured with an NBI RS set associated with the BFD RS set, the UE measures each NBI RS set to find the corresponding new beam.

[0182] The UE may transmit the target BFRQ in any of the following ways:

[0183] Send the target BFRQ on the nearest available uplink grant;

[0184] If only one PUCCH is configured in the cell group where the second cell is located for sending beam failure recovery requests, the target BFRQ is sent through this PUCCH;

[0185] When multiple PUCCHs for sending beam failure recovery requests are configured in the cell group where the second cell is located, the target BFRQ is sent from one PUCCH or at least two PUCCHs. When the network-side equipment is configured with multiple PUCCH resources on the primary cell and the first cell is the primary cell, BFRQ is performed in the following two cases:

[0186] If the set of failed BFD RSs in the first cell corresponds to the same TRP as the set of failed BFD RSs in the second cell, then a scheduling request is sent on the PUCCH resource associated with the set of failed or non-failed BFD RSs.

[0187] If the failed BFD RSs in the first cell and the failed BFD RSs in the second cell correspond to different TRPs, the UE will select one or more PUCCH resources to send a scheduling request according to certain preset rules, such as the PUCCH resource closest to the time when the beam failure was announced, or the RS with the highest measurement value.

[0188] Linked PUCCH resources.

[0189] If CFRA resources are configured, BFRQ information is sent via CFRA; otherwise, BFRQ information is sent via CBRA. Specifically, if the network-side device is configured with CBRA resources associated with a BFD RS set, BFRQ information is sent using CBRA resources associated with a failed or non-failed BFD RS set in the primary cell; otherwise, if a non-failed BFD RS set is associated with new beam information carried by CBRA resources, STRP is returned.

[0190] In other words, in the third case described above, the beam failure condition includes beam failure occurring in the first BFD RS set or the second BFD RS set, and beam failure occurring in the fourth BFD RS set.

[0191] The fourth BFD RS set is the BFD RS set corresponding to the TRP of the second cell. The second cell includes at least two TRPs. The target BFRQ includes the beam failure recovery information of the fourth BFD RS set and the beam failure recovery information of the target BFD RS set.

[0192] The target BFD RS set is either the first BFD RS set or the second BFD RS set where beam failure has occurred.

[0193] The terminal sending a Target Beam Failure Recovery Request (BFRQ) includes any one of the following:

[0194] Send the target BFRQ on the nearest available uplink grant;

[0195] If only one PUCCH is configured in the cell group where the second cell is located for sending beam failure recovery requests, the target BFRQ is sent through this PUCCH;

[0196] In the case where multiple PUCCHs are configured in the cell group where the second cell is located for sending beam failure recovery requests, the target BFRQ is sent from one PUCCH or at least two PUCCHs selected from the multiple PUCCHs.

[0197] In the case where multiple PUCCHs for sending beam failure recovery requests are configured in the cell group where the second cell is located, the target BFRQ is sent by selecting one or at least two target PUCCHs from the multiple PUCCHs. The target PUCCHs include the PUCCHs that correspond to the primary cell in the cell group where the second cell is located.

[0198] When the network-side device is configured with non-contention-based random access (CFRA), the target BFRQ is sent via CFRA;

[0199] If the network-side equipment is not configured with non-contention-based random access (CFRA), the target BFRQ is sent via CBRA.

[0200] In the third case, the beam failure condition includes beam failure occurring in the first BFD RS set or the second BFD RS set, and beam failure occurring in the fourth BFD RS set.

[0201] The target BFRQ includes beam failure recovery information of the fourth BFD RS set and beam failure recovery information of the target BFD RS set, wherein the target BFD RS set is the first BFD RS set or the second BFD RS set where beam failure occurred.

[0202] The terminal resets the Transmission Configuration Indicator (TCI) status of some or all channels based on the target beam information carried by the target BFRQ, and / or resets the configuration parameters of uplink power control based on the target beam information, including:

[0203] The TCI state of the CORESET associated with the BFD RS set that has experienced beam failure is reset based on the target beam information carried by the target BFRQ.

[0204] The above embodiments provide a beam recovery method in multi-TRP scenarios and / or CA scenarios, in cases where beam failure occurs in some BFD RS sets, or all BFD RS sets, or at least two BFD RS sets fail simultaneously or not simultaneously. This method enables the network and UE to quickly restore the interrupted beam link and improve the reliability of data transmission.

[0205] like Figure 3 As shown in the figure, this application provides a beam failure recovery method, including:

[0206] Step 301: The network-side device configures at least two Beam Failure Detection Reference Signal (BFD RS) sets for the terminal.

[0207] Network-side devices can configure BFD RS sets explicitly or implicitly. For example, in the explicit indication method, a new domain indicator control resource set pool index (i.e., CORESETPoolindex) or control resource group identifier (CORESETGroupID) is added to the BFD RS set; in the implicit indication method, the association relationship between BFD RS and CORESETPoolindex or CORESETGroupID is obtained according to the implicit configuration of BFD RS.

[0208] The at least two BFD RS sets include at least one of the following:

[0209] A set of BFD RSs corresponding to one or more transmit / receive points (TRPs) in the same cell;

[0210] A set of BFD RS corresponding to one or more transmit / receive points (TRPs) in different cells;

[0211] A BFD RS set corresponding to one or more cells.

[0212] In other words, at least one of the at least two BFD RS sets may correspond to one or more TRPs, and / or at least one of the at least two BFD RS sets may correspond to some TRPs in the primary cell, or to some TRPs in the secondary cell, or to the primary cell, or to the secondary cell, or to multiple cells.

[0213] The TRP corresponding to the aforementioned BFD RS set can be indicated by the control resource set pool index (i.e., CORESETPoolindex) and / or the control resource group identifier (CORESETGroupID). Furthermore, the TRP can also be indicated by the BFD RS set identifier (i.e., BFD RS set ID) or the identifier of the NBI RS set.

[0214] Step 302: The network-side device receives the Target Beam Failure Recovery Request (BFRQ).

[0215] Under different circumstances, the terminal sends the target BFRQ to the network-side device through different transmission paths. Correspondingly, the network-side device receives the target BFRQ through the path sent by the terminal. For example, if the terminal sends the target BFRQ on the most recent available uplink grant, the network-side device receives the target BFRQ on the available uplink grant where the terminal sent it. If the terminal sends the target BFRQ through only one PUCCH configured in the cell group where the first cell is located, the network-side device receives the target BFRQ on that PUCCH.

[0216] Step 303: The network-side device sends a beam failure recovery response (BFRR) corresponding to the target BFRQ, so that the terminal resets the Transmission Configuration Indication (TCI) status of some or all channels according to the target beam information carried by the target BFRQ, and / or resets the configuration parameters of uplink power control according to the target beam information.

[0217] In this embodiment, the network-side device configures at least two sets of Beam Failure Detection Reference Signals (BFD RS) for the terminal; receives a Target Beam Failure Recovery Request (BFRQ); and sends a Beam Failure Recovery Response (BFRR) corresponding to the target BFRQ. This enables the terminal to reset the Transmission Configuration Indication (TCI) status of some or all channels based on the target beam information carried by the target BFRQ, and / or reset the uplink power control configuration parameters based on the target beam information. This process allows the network-side device and the terminal to quickly restore interrupted beam links, improving the reliability of data transmission.

[0218] Furthermore, the at least two BFD RS sets include at least one of the following:

[0219] A set of BFD RSs corresponding to one or more transmit / receive points (TRPs) in the same cell;

[0220] A set of BFD RS corresponding to one or more transmit / receive points (TRPs) in different cells;

[0221] A BFD RS set corresponding to one or more cells.

[0222] Furthermore, the at least two BFD RS sets include a first BFD RS set and a second BFD RS set, wherein the first BFD RS set and the second BFD RS set correspond to different TRPs of the first cell.

[0223] Furthermore, the at least two BFD RS sets also include a third BFD RS set corresponding to the first cell.

[0224] Furthermore, the at least two BFD RS sets also include a fourth BFD RS set, which is either the BFD RS set corresponding to the second cell or the BFD RS set corresponding to the TRP in the second cell.

[0225] The second cell is in the same cell group as the first cell.

[0226] Furthermore, the TRP can be indicated in at least one of the following ways:

[0227] Control resource pool index;

[0228] Control resource group identifier.

[0229] It should be noted that the beam failure recovery method provided in this application embodiment can be executed by a beam failure recovery device, or by a control module within that device for executing the beam failure recovery method. This application embodiment uses the beam failure recovery device executing the beam failure recovery method as an example to illustrate the beam failure recovery device provided in this application embodiment.

[0230] Figure 4 This is a structural diagram of the beam failure recovery device provided in the embodiments of this application, as shown below. Figure 4 As shown, this embodiment provides a beam failure recovery device, including:

[0231] The acquisition module is used to measure at least two sets of beam failure detection reference signals (BFD RS) configured on the network-side device and obtain the measurement results.

[0232] The transmitting module is configured to transmit a target beam failure recovery request (BFRQ) when it is determined, based on the measurement results, that the at least two BFD RS sets meet the beam failure condition.

[0233] The receiving module is used to receive the beam failure recovery response (BFRR) corresponding to the target BFRQ.

[0234] The reset module is used to reset the Transmission Configuration Indicator (TCI) status of some or all channels according to the target beam information carried by the target BFRQ, and / or to reset the configuration parameters of uplink power control according to the target beam information.

[0235] Furthermore, the at least two BFD RS sets include at least one of the following:

[0236] A set of BFD RSs corresponding to one or more transmit / receive points (TRPs) in the same cell;

[0237] A set of BFD RS corresponding to one or more transmit / receive points (TRPs) in different cells;

[0238] A BFD RS set corresponding to one or more cells.

[0239] Furthermore, the TRP can be indicated in at least one of the following ways:

[0240] Control resource pool index;

[0241] Control resource group identifier.

[0242] Furthermore, the at least two BFD RS sets include a first BFD RS set and a second BFD RS set, wherein the first BFD RS set and the second BFD RS set correspond to different TRPs of the first cell.

[0243] Furthermore, the at least two BFD RS sets include a first BFD RS set and a second BFD RS set, the first BFD RS set and the second BFD RS set correspond to different TRPs of the first cell, and the beam failure condition is that a beam failure occurs in the first BFD RS set or the second BFD RS set.

[0244] The target beam failure recovery request (BFRQ) includes any one of the following:

[0245] Send the target BFRQ on the nearest available uplink grant;

[0246] When only one Physical Uplink Control Channel (PUCCH) is configured in the cell group where the first cell is located for sending beam failure recovery requests, the target BFRQ is sent through this PUCCH.

[0247] When multiple PUCCHs for sending beam failure recovery requests are configured in the cell group where the first cell is located, the target BFRQ is sent through the PUCCH associated with the set of failed or non-failed BFD RSs corresponding to the TRP of the first cell.

[0248] When the network-side device is configured with non-contention-based random access (CFRA), the target BFRQ is sent via CFRA;

[0249] If the network-side device is not configured with non-contention-based random access (CFRA), the target BFRQ is sent via contention-based random access (CBRA).

[0250] Furthermore, the at least two BFD RS sets include a first BFD RS set and a second BFD RS set, the first BFD RS set and the second BFD RS set correspond to different TRPs of the first cell, and the beam failure condition includes a beam failure occurring in the first BFD RS set, and the terminal is in the beam failure recovery request process of the second BFD RS set.

[0251] The first cell is the primary cell, and the target BFRQ includes beam failure recovery information of the first BFD RS set;

[0252] The terminal sending a Target Beam Failure Recovery Request (BFRQ) includes any one of the following:

[0253] Send the target BFRQ on the nearest available uplink grant;

[0254] When only one Physical Uplink Control Channel (PUCCH) is configured in the cell group where the first cell is located for sending beam failure recovery requests, the target BFRQ is sent through this PUCCH.

[0255] In the case where multiple PUCCHs for sending beam failure recovery requests are configured in the cell group where the first cell is located, the target BFRQ is sent through the nearest PUCCH among the multiple PUCCHs;

[0256] In the case where multiple PUCCHs for transmitting beam failure recovery requests are configured in the cell group to which the first cell belongs, the target BFRQ is transmitted through the PUCCH associated with the first BFD RS set or the second BFD RS set.

[0257] Multiple PUCCHs for sending beam failure recovery requests are configured in the cell group where the first cell is located. When the terminal receives a beam failure recovery response (BFRR) corresponding to the second BFD RS set, the target BFRQ is sent through the nearest PUCCH associated with the first BFD RS set or the second BFD RS set.

[0258] When the terminal receives the BFRR corresponding to the second BFD RS set, the target BFRQ is sent on the uplink grant scheduled by the BFRR corresponding to the second BFD RS set.

[0259] When the network-side device is configured with a CFRA associated with the first BFD RS set, the target BFRQ is sent via the CFRA;

[0260] If the network-side device is not configured with a CFRA associated with the first BFD RS set, the target BFRQ is sent via CBRA.

[0261] Accordingly, the transmitting module is configured to either continue executing or interrupt the execution of the beam failure recovery request process corresponding to the second BFDRS set when a beam failure occurs in the first BFD RS set and the BFRQ corresponding to the second BFD RS set is not transmitted on the PUSCH, and to transmit the target BFRQ through CBRA.

[0262] If a beam failure occurs in the first BFD RS set, and the BFRQ corresponding to the second BFD RS set has been sent on the PUSCH, and the PUSCH is not multiplexed with the uplink shared transport channel UL-SCH, then the beam failure recovery request process corresponding to the second BFD RS set will continue or be interrupted, and the target BFRQ will be sent through CBRA.

[0263] The target BFRQ also includes beam failure recovery information from the second BFD RS set.

[0264] Furthermore, the at least two BFD RS sets include a first BFD RS set and a second BFD RS set, the first BFD RS set and the second BFD RS set correspond to different TRPs of the first cell, and the beam failure condition includes a beam failure occurring in the first BFD RS set, and the terminal is in the beam failure recovery request process of the second BFD RS set.

[0265] The first cell is a secondary cell, and the target BFRQ includes beam failure recovery information of the first BFD RS set;

[0266] The terminal sending a Target Beam Failure Recovery Request (BFRQ) includes any one of the following:

[0267] Send the target BFRQ on the nearest available uplink grant;

[0268] In the case where multiple PUCCHs for sending beam failure recovery requests are configured in the cell group where the first cell is located, the target BFRQ is sent through the nearest PUCCH associated with the first BFD RS set;

[0269] In the case where multiple PUCCHs for transmitting beam failure recovery requests are configured in the cell group where the first cell is located, the target BFRQ is transmitted through the PUCCH associated with the first BFD RS set or the second BFD RS set;

[0270] Multiple PUCCHs for sending beam failure recovery requests are configured in the cell group where the first cell is located. When the terminal receives the BFRR corresponding to the second BFD RS set, the target BFRQ is sent through the nearest PUCCH associated with the first BFD RS set or the second BFD RS set.

[0271] When the terminal receives the BFRR corresponding to the second BFD RS set, the target BFRQ is sent on the uplink grant scheduled by the BFRR corresponding to the second BFD RS set.

[0272] Accordingly, the transmitting module is configured to either continue or interrupt the beam failure recovery request process corresponding to the second BFD RS set when a beam failure occurs in the first BFD RS set and the BFRQ corresponding to the second BFD RS set is not transmitted on the PUSCH, or when a beam failure occurs in the first BFD RS set, the BFRQ corresponding to the second BFD RS set has been transmitted on the PUSCH, and the PUSCH is not multiplexed with the uplink shared transport channel UL-SCH, and transmit the target BFRQ through any of the following:

[0273] Send the target BFRQ on the nearest available uplink grant;

[0274] If a PUCCH for sending beam failure recovery requests is configured in the cell group where the first cell is located, the target BFRQ is sent through the PUCCH.

[0275] In the case where multiple PUCCHs for sending beam failure recovery requests are configured in the cell group where the first cell is located, the target BFRQ is sent by selecting one PUCCH from the multiple PUCCHs according to the fourth preset rule;

[0276] The target BFRQ is transmitted via CFRA or CBRA in the primary cell of the cell group to which the first cell is located.

[0277] Accordingly, the target BFRQ includes at least one of the following: the identifier of the first BFR RS set, the identifier of the second BFD RS set, the new beam information corresponding to the first BFD RS set, and the new beam information corresponding to the second BFD RS set.

[0278] Accordingly, the reset module is used to reset the TCI state of the CORESET associated with the first BFD RS set and / or the TCI state of the CORESET associated with the second BFD RS set according to the target beam information.

[0279] Furthermore, the beam failure condition includes the simultaneous occurrence of beam failure in both the first BFD RS set and the second BFD RS set;

[0280] The first cell is the primary cell;

[0281] The terminal sends a Target Beam Failure Recovery Request (BFRQ) including sending the target BFRQ via CBRA.

[0282] Furthermore, the beam failure condition includes the simultaneous occurrence of beam failure in both the first BFD RS set and the second BFD RS set;

[0283] The first cell is a secondary cell;

[0284] The terminal sending a Target Beam Failure Recovery Request (BFRQ) includes any one of the following:

[0285] Send the target BFRQ on the nearest available uplink grant;

[0286] In the case where multiple PUCCHs are configured in the cell group where the first cell is located for sending beam failure recovery requests, the target BFRQ is sent from one of the multiple PUCCHs according to the fifth preset rule.

[0287] Furthermore, the at least two BFD RS sets include a first BFD RS set and a second BFD RS set, the first BFD RS set and the second BFD RS set correspond to different TRPs of the first cell, and the third BFD RS set corresponds to the first cell;

[0288] Accordingly, the beam failure condition includes at least one of the following:

[0289] Both the first BFD RS set and the second BFD RS set experienced beam failure within the first preset time window;

[0290] The third BFD RS set experienced beam failure;

[0291] All BFD RS sets configured in the first cell experienced beam failure within the second preset time window.

[0292] Furthermore, the at least two BFD RS sets include a first BFD RS set and a second BFD RS set, the first BFD RS set and the second BFD RS set corresponding to different TRPs of the first cell, and a third BFD RS set corresponding to the first cell, wherein the first cell is the primary cell.

[0293] The terminal sending a Target Beam Failure Recovery Request (BFRQ) includes any one of the following:

[0294] When CFRA is configured on the network-side device, the target BFRQ is sent via CFRA;

[0295] When the network-side device is not configured with CFRA, the target BFRQ is sent via CBRA.

[0296] Furthermore, the at least two BFD RS sets include a first BFD RS set and a second BFD RS set, the first BFD RS set and the second BFD RS set correspond to different TRPs of the first cell, the third BFD RS set corresponds to the first cell, and the beam failure condition includes the beam failure of the third BFD RS set, and the beam failure of the first BFD RS set and the second BFD RS set before the beam failure of the third BFD RS set.

[0297] The first cell is the primary cell, and the target BFRQ includes the beam failure recovery information of the third BFD RS set;

[0298] Correspondingly, the sending module is used for:

[0299] Interrupt the beam failure recovery request process corresponding to the first BFD RS set and the second BFD RS set respectively, and send the target BFRQ via CFRA, or CBRA, or available uplink grant, or PUCCH corresponding to the third BFD RS set;

[0300] or,

[0301] In the event of a conflict between the beam failure recovery request process corresponding to the first BFD RS set and the beam failure recovery request process corresponding to the third BFD RS set, the beam failure recovery request process corresponding to the first BFD RS set is interrupted, and the target BFRQ is transmitted on the uplink grant for transmitting the BFRQ corresponding to the second BFD RS set. The target BFRQ also includes beam failure recovery information of the second BFD RS set.

[0302] Alternatively, if the beam failure recovery request process corresponding to the first BFD RS set conflicts with the beam failure recovery request process corresponding to the third BFD RS set, the beam failure recovery request process corresponding to the first BFD RS set is interrupted, and the target BFRQ is sent via CFRA, CBRA, or an available uplink grant, or the PUCCH corresponding to the third BFD RS set.

[0303] or,

[0304] The target BFRQ is transmitted on the uplink grant of the BFRQ corresponding to the second BFD RS set. The target BFRQ also includes beam failure recovery information of the first BFD RS set and / or beam failure recovery information of the second BFD RS set.

[0305] or,

[0306] The BFRQ corresponding to the first BFD RS set is sent via CFRA, or CBRA, or available uplink grant, or PUCCH corresponding to the first BFD RS set, and the target BFRQ is transmitted on the uplink grant for transmitting the BFRQ corresponding to the second BFD RS set. The target BFRQ may also include beam failure recovery information of the second BFD RS set.

[0307] Alternatively, the BFRQ corresponding to the first BFD RS set and the BFRQ corresponding to the second BFD RS set may be sent via CFRA, CBRA, or available uplink grant, or via the PUCCH corresponding to the first BFD RS set and the second BFD RS set, respectively, and the target BFRQ may be sent via CFRA, CBRA, or available uplink grant, or via the PUCCH corresponding to the third BFD RS set.

[0308] Furthermore, the at least two BFD RS sets include a first BFD RS set and a second BFD RS set, the first BFD RS set and the second BFD RS set correspond to different TRPs of the first cell, the third BFD RS set corresponds to the first cell, and the beam failure condition includes the beam failure of the third BFD RS set, and the beam failure of the first BFD RS set and the second BFD RS set before the beam failure of the third BFD RS set.

[0309] The first cell is the primary cell, and the target BFRQ includes the beam failure recovery information of the third BFD RS set;

[0310] Accordingly, the reset module is used for:

[0311] If the terminal interrupts the beam failure recovery request process corresponding to the first BFD RS set and the second BFD RS set respectively, the TCI state of the corresponding CORESET is reset according to the target beam information, or the TCI state of all CORESETs corresponding to the first cell is reset.

[0312] or,

[0313] If the terminal interrupts the beam failure recovery request process corresponding to the first BFD RS set and continues to execute the beam failure recovery request process corresponding to the second BFD RS set, if the first new beam information carried by the BFRQ associated with the second BFD RS set corresponds to the same TRP as the target beam information, then the TCI status of the corresponding CORESET or the TCI status of all CORESETs corresponding to the first cell is reset according to the target beam information.

[0314] or,

[0315] If the terminal interrupts the beam failure recovery request process corresponding to the first BFD RS set and continues to execute the beam failure recovery request process corresponding to the second BFD RS set, if the first new beam information carried by the BFRQ associated with the second BFD RS set corresponds to a different TRP as the target beam information, then the TCI state of the corresponding CORESET is reset according to the target beam information, and the TCI state of the corresponding CORESET is reset according to the first new beam information.

[0316] Alternatively, if the terminal continues to execute the beam failure recovery request process corresponding to the first BFD RS set and continues to execute the beam failure recovery request process corresponding to the second BFD RS set, the TCI state of the CORESET corresponding to the new beam information of each of the first BFD RS set and the second BFD RS set is reset according to the new beam information carried by the BFRQ associated with each of the two sets, and the TCI state of the corresponding CORESET is reset according to the target beam information.

[0317] or,

[0318] If the terminal continues to execute the beam failure recovery request process corresponding to the first BFD RS set and continues to execute the beam failure recovery request process corresponding to the second BFD RS set, the TCI status of the corresponding CORESET is reset according to the target beam information, or the TCI status of all CORESETs corresponding to the first cell is reset.

[0319] or,

[0320] If the terminal continues to execute the beam failure recovery request process corresponding to the first BFD RS set and continues to execute the beam failure recovery request process corresponding to the second BFD RS set, the second new beam information and the third new beam information are selected from the candidate new beam information according to the third preset rule to reset the TCI status of their respective CORESETs, or the TCI status of all CORESETs corresponding to the first cell is reset, and the second new beam information and the third new beam information are associated with different BFD RS sets;

[0321] The candidate new beam information includes the new beam information carried by the BFRQ associated with the first BFD RS set, the new beam information carried by the BFRQ associated with the second BFD RS set, and the target beam information.

[0322] Furthermore, the at least two BFD RS sets include a first BFD RS set and a second BFD RS set, the first BFD RS set and the second BFD RS set correspond to different TRPs of the first cell, the third BFD RS set corresponds to the first cell, the first cell is a secondary cell, and the target BFRQ includes the beam failure recovery information of the third BFD RS set.

[0323] The terminal sending a Target Beam Failure Recovery Request (BFRQ) includes any one of the following:

[0324] Send the target BFRQ on the nearest available uplink grant;

[0325] If only one PUCCH is configured in the cell group where the first cell is located for sending beam failure recovery requests, the target BFRQ is sent through the PUCCH.

[0326] In the case where multiple PUCCHs are configured in the cell group to which the first cell is located for sending beam failure recovery requests, the target BFRQ is sent by selecting one PUCCH from the multiple PUCCHs according to the first preset rule.

[0327] Furthermore, the at least two BFD RS sets include a first BFD RS set, a second BFD RS set, and a fourth BFD RS set. The first BFD RS set and the second BFD RS set correspond to different TRPs of the first cell. The fourth BFD RS set is a BFD RS set corresponding to the second cell, or a BFD RS set corresponding to a TRP in the second cell. The second cell and the first cell are in the same cell group.

[0328] Furthermore, the at least two BFD RS sets include a first BFD RS set, a second BFD RS set, and a fourth BFD RS set. The first BFD RS set and the second BFD RS set correspond to different TRPs of the first cell. The beam failure condition includes beam failure occurring in either the first BFD RS set or the second BFD RS set, and beam failure occurring in the fourth BFD RS set.

[0329] Correspondingly, the fourth BFD RS set is the BFD RS set corresponding to the second cell, and the target BFRQ includes the beam failure recovery information of the fourth BFD RS set;

[0330] The terminal sending a Target Beam Failure Recovery Request (BFRQ) includes any one of the following:

[0331] On the most recently available uplink grant, transmit the BFRQ corresponding to the target BFD RS set and the target BFRQ, wherein the target BFD RS set is either the first BFD RS set or the second BFD RS set where beam failure has occurred.

[0332] If only one PUCCH is configured in the cell group where the second cell is located for sending beam failure recovery requests, the target BFRQ is sent through this PUCCH;

[0333] In the case where multiple PUCCHs for sending beam failure recovery requests are configured in the cell group where the second cell is located, the target BFRQ is sent by selecting one PUCCH from the multiple PUCCHs according to the second preset rule;

[0334] When the network-side device is configured with non-contention-based random access (CFRA), the target BFRQ is sent via CFRA;

[0335] If the network-side equipment is not configured with non-contention-based random access (CFRA), the target BFRQ is sent via CBRA.

[0336] Furthermore, the second preset rule includes any one of the following:

[0337] Select the most recent PUCCH from multiple PUCCHs;

[0338] Select a PUCCH from among the multiple PUCCHs that is associated with a BFD RS set that has failed or not failed from the at least two BFD RS sets;

[0339] Select the PUCCH associated with the fourth BFD RS set from among the multiple PUCCHs;

[0340] Select the PUCCH corresponding to the primary cell in the cell group where the second cell is located from multiple PUCCHs.

[0341] Furthermore, the at least two BFD RS sets include a first BFD RS set, a second BFD RS set, and a fourth BFD RS set. The first BFD RS set and the second BFD RS set correspond to different TRPs of the first cell. The beam failure condition includes beam failure occurring in either the first BFD RS set or the second BFD RS set, and beam failure occurring in the fourth BFD RS set.

[0342] The fourth BFD RS set is the BFD RS set corresponding to the TRP of the second cell. The second cell includes at least two TRPs. The target BFRQ includes the beam failure recovery information of the fourth BFD RS set and the beam failure recovery information of the target BFD RS set.

[0343] The target BFD RS set is either the first BFD RS set or the second BFD RS set where beam failure has occurred.

[0344] Accordingly, the terminal sending a Target Beam Failure Recovery Request (BFRQ) includes any one of the following:

[0345] Send the target BFRQ on the nearest available uplink grant;

[0346] If only one PUCCH is configured in the cell group where the second cell is located for sending beam failure recovery requests, the target BFRQ is sent through this PUCCH;

[0347] In the case where multiple PUCCHs are configured in the cell group where the second cell is located for sending beam failure recovery requests, the target BFRQ is sent from one PUCCH or at least two PUCCHs selected from the multiple PUCCHs.

[0348] In the case where multiple PUCCHs for sending beam failure recovery requests are configured in the cell group where the second cell is located, the target BFRQ is sent by selecting one or at least two target PUCCHs from the multiple PUCCHs. The target PUCCHs include the PUCCHs that correspond to the primary cell in the cell group where the second cell is located.

[0349] When the network-side device is configured with non-contention-based random access (CFRA), the target BFRQ is sent via CFRA;

[0350] If the network-side equipment is not configured with non-contention-based random access (CFRA), the target BFRQ is sent via CBRA.

[0351] Furthermore, the at least two BFD RS sets include a first BFD RS set, a second BFD RS set, and a fourth BFD RS set. The first BFD RS set and the second BFD RS set correspond to different TRPs of the first cell. The beam failure condition includes beam failure occurring in either the first BFD RS set or the second BFD RS set, and beam failure occurring in the fourth BFD RS set.

[0352] The target BFRQ includes beam failure recovery information of the fourth BFD RS set and beam failure recovery information of the target BFD RS set, wherein the target BFD RS set is the first BFD RS set or the second BFD RS set where beam failure occurred.

[0353] The reset module is used to reset the TCI state of the CORESET associated with the BFD RS set that has experienced beam failure, based on the target beam information carried by the target BFRQ.

[0354] In this embodiment, the terminal measures at least two sets of Beam Failure Detection Reference Signals (BFD RS) configured by the network-side device to obtain measurement results. If, based on the measurement results, the at least two sets of BFD RS satisfy the beam failure condition, the terminal sends a target BFRQ. The terminal receives the BFRR corresponding to the target BFRQ. The terminal resets the TCI state of some or all channels based on the target beam information carried by the target BFRQ, and / or resets the uplink power control configuration parameters based on the target beam information. When the terminal detects that the at least two sets of BFD RS satisfy the beam failure condition, it sends the target BFRQ to the network-side device, enabling the network-side device and the terminal to quickly restore the interrupted beam link and improve the reliability of data transmission.

[0355] The beam failure recovery device in this application embodiment can be a device, a device or electronic device with an operating system, or a component, integrated circuit, or chip in a terminal. The device or electronic device can be a mobile terminal or a non-mobile terminal. For example, a mobile terminal can include, but is not limited to, the types of terminals 11 listed above, while a non-mobile terminal can be a server, network attached storage (NAS), personal computer (PC), television (TV), ATM, or self-service machine, etc. This application embodiment does not specifically limit the specific type of terminal.

[0356] The beam failure recovery device provided in this application embodiment can achieve... Figure 1 The various processes implemented in the method embodiments achieve the same technical effect, and will not be described again here to avoid repetition.

[0357] like Figure 5 As shown in the figure, this application embodiment also provides a beam failure recovery device 500, including:

[0358] Configuration module 501 is used to configure at least two beam failure detection reference signal (BFD RS) sets for the terminal;

[0359] Receiver module 502 is used to receive target beam failure recovery request (BFRQ);

[0360] The transmitting module 503 is used to transmit the beam failure recovery response (BFRR) corresponding to the target BFRQ.

[0361] Furthermore, the at least two BFD RS sets include at least one of the following:

[0362] A set of BFD RSs corresponding to one or more transmit / receive points (TRPs) in the same cell;

[0363] A set of BFD RS corresponding to one or more transmit / receive points (TRPs) in different cells;

[0364] A BFD RS set corresponding to one or more cells.

[0365] Furthermore, the TRP can be indicated in at least one of the following ways:

[0366] Control resource pool index;

[0367] Control resource group identifier.

[0368] Furthermore, the at least two BFD RS sets include a first BFD RS set and a second BFD RS set, wherein the first BFD RS set and the second BFD RS set correspond to different TRPs of the first cell.

[0369] Furthermore, the at least two BFD RS sets also include a third BFD RS set corresponding to the first cell.

[0370] Furthermore, the at least two BFD RS sets also include a fourth BFD RS set, which is either the BFD RS set corresponding to the second cell or the BFD RS set corresponding to the TRP in the second cell; the second cell and the first cell are in the same cell group.

[0371] In this embodiment, the network-side device configures at least two sets of Beam Failure Detection Reference Signals (BFD RS) for the terminal; receives a Target Beam Failure Recovery Request (BFRQ); and sends a Beam Failure Recovery Response (BFRR) corresponding to the target BFRQ. This enables the terminal to reset the Transmission Configuration Indication (TCI) status of some or all channels based on the target beam information carried by the target BFRQ, and / or reset the uplink power control configuration parameters based on the target beam information. This process allows the network-side device and the terminal to quickly restore interrupted beam links, improving the reliability of data transmission.

[0372] Optional, such as Figure 6 As shown, this application embodiment also provides a communication device 600, including a processor 601, a memory 602, and a program or instructions stored in the memory 602 and executable on the processor 601. For example, when the communication device 600 is a terminal, the program or instructions executed by the processor 601 implement the above-mentioned... Figure 2The various processes of the beam failure recovery method embodiment shown can achieve the same technical effect. When the communication device 600 is a network-side device, the above-described process is implemented when the program or instruction is executed by the processor 601. Figure 3 The various processes of the beam failure recovery method embodiment shown are all able to achieve the same technical effect, and will not be described again here to avoid repetition.

[0373] This application embodiment also provides a terminal, including a processor and a communication interface. The processor is used to measure at least two sets of Beam Failure Detection Reference Signals (BFD RS) configured by the network-side device, obtain measurement results, and reset the Transmission Configuration Indicator (TCI) state of some or all channels according to the target beam information carried by the target BFRQ, and / or reset the configuration parameters of uplink power control according to the target beam information. The communication interface is used to send a Target Beam Failure Recovery Request (BFRQ) and receive a Beam Failure Recovery Response (BFRR) corresponding to the target BFRQ when it is determined, based on the measurement results, that the at least two sets of BFD RS meet the beam failure condition; and to receive a Beam Failure Recovery Response (BFRR) corresponding to the target BFRQ. This terminal embodiment corresponds to the above-described terminal-side method embodiment. All implementation processes and methods of the above method embodiments can be applied to this terminal embodiment and achieve the same technical effect. Specifically, Figure 7 A schematic diagram of the hardware structure of a terminal to implement an embodiment of this application.

[0374] The terminal 100 includes, but is not limited to, at least some of the following components: radio frequency unit 101, network module 102, audio output unit 103, input unit 104, sensor 105, display unit 106, user input unit 107, interface unit 108, memory 109, and processor 110.

[0375] Those skilled in the art will understand that the terminal 100 may also include a power supply (such as a battery) for supplying power to various components. The power supply may be logically connected to the processor 110 through a power management system, thereby enabling functions such as managing charging, discharging, and power consumption through the power management system. Figure 7 The terminal structure shown does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0376] It should be understood that, in this embodiment, the input unit 104 may include a graphics processing unit (GPU) 1041 and a microphone 1042. The GPU 1041 processes image data of still images or videos obtained by an image capture device (such as a camera) in video capture mode or image capture mode. The display unit 106 may include a display panel 1061, which may be configured in the form of a liquid crystal display, an organic light-emitting diode, or the like. The user input unit 107 includes a touch panel 1071 and other input devices 1072. The touch panel 1071 is also called a touch screen. The touch panel 1071 may include a touch detection device and a touch controller. Other input devices 1072 may include, but are not limited to, a physical keyboard, function keys (such as volume control buttons, power buttons, etc.), a trackball, a mouse, and a joystick, which will not be described in detail here.

[0377] In this embodiment, the radio frequency unit 101 receives downlink data from the network-side device and processes it for the processor 110; additionally, it sends uplink data to the network-side device. Typically, the radio frequency unit 101 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, etc.

[0378] The memory 109 can be used to store software programs or instructions and various data. The memory 109 may primarily include a program or instruction storage area and a data storage area. The program or instruction storage area may store the operating system, application programs or instructions required for at least one function (such as sound playback, image playback, etc.). Furthermore, the memory 109 may include high-speed random access memory and non-volatile memory, wherein the non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. For example, at least one disk storage device, flash memory device, or other non-volatile solid-state storage device.

[0379] Processor 110 may include one or more processing units; optionally, processor 110 may integrate an application processor and a modem processor, wherein the application processor mainly handles the operating system, user interface, and applications or instructions, and the modem processor mainly handles wireless communication, such as a baseband processor. It is understood that the aforementioned modem processor may also not be integrated into processor 110.

[0380] The radio frequency unit 101 is configured to, when the measurement results indicate that the at least two BFD RS sets meet the beam failure condition, send a target beam failure recovery request (BFRQ) and receive a beam failure recovery response (BFRR) corresponding to the target BFRQ.

[0381] The processor 110 is configured to measure at least two sets of beam failure detection reference signals (BFD RS) configured by the network-side device, obtain measurement results, reset the transmission configuration indication (TCI) status of some or all channels according to the target beam information carried by the target BFRQ, and / or reset the configuration parameters of uplink power control according to the target beam information.

[0382] In this implementation, the terminal measures at least two sets of Beam Failure Detection Reference Signals (BFD RS) configured by the network-side equipment to obtain measurement results. If, based on the measurement results, the at least two sets of BFD RS satisfy the beam failure condition, the terminal sends a Target Beam Failure Recovery Request (BFRQ). The terminal receives a Beam Failure Recovery Response (BFRR) corresponding to the target BFRQ. The terminal resets the Transmission Configuration Indicator (TCI) status of some or all channels based on the target beam information carried by the target BFRQ, and / or resets the uplink power control configuration parameters based on the target beam information. This process enables the terminal to quickly restore interrupted beam links, improving the reliability of data transmission.

[0383] Furthermore, the at least two BFD RS sets include at least one of the following:

[0384] A set of BFD RSs corresponding to one or more transmit / receive points (TRPs) in the same cell;

[0385] A set of BFD RS corresponding to one or more transmit / receive points (TRPs) in different cells;

[0386] A BFD RS set corresponding to one or more cells.

[0387] Furthermore, the at least two BFD RS sets include a first BFD RS set and a second BFD RS set, wherein the first BFD RS set and the second BFD RS set correspond to different TRPs of the first cell.

[0388] Furthermore, the beam failure condition is that a beam failure occurs in either the first BFD RS set or the second BFD RS set;

[0389] The terminal sending a Target Beam Failure Recovery Request (BFRQ) includes any one of the following:

[0390] Send the target BFRQ on the nearest available uplink grant;

[0391] When only one Physical Uplink Control Channel (PUCCH) is configured in the cell group where the first cell is located for sending beam failure recovery requests, the target BFRQ is sent through this PUCCH.

[0392] When multiple PUCCHs for sending beam failure recovery requests are configured in the cell group where the first cell is located, the target BFRQ is sent through the PUCCH associated with the set of failed or non-failed BFD RSs corresponding to the TRP of the first cell.

[0393] When the network-side device is configured with non-contention-based random access (CFRA), the target BFRQ is sent via CFRA;

[0394] If the network-side device is not configured with non-contention-based random access (CFRA), the target BFRQ is sent via contention-based random access (CBRA).

[0395] Furthermore, the beam failure condition includes a beam failure occurring in the first BFD RS set, and the terminal being in the beam failure recovery request process for a beam failure occurring in the second BFD RS set.

[0396] The first cell is the primary cell, and the target BFRQ includes beam failure recovery information of the first BFD RS set;

[0397] The terminal sending a Target Beam Failure Recovery Request (BFRQ) includes any one of the following:

[0398] Send the target BFRQ on the nearest available uplink grant;

[0399] When only one Physical Uplink Control Channel (PUCCH) is configured in the cell group where the first cell is located for sending beam failure recovery requests, the target BFRQ is sent through this PUCCH.

[0400] In the case where multiple PUCCHs for sending beam failure recovery requests are configured in the cell group where the first cell is located, the target BFRQ is sent through the nearest PUCCH among the multiple PUCCHs;

[0401] In the case where multiple PUCCHs for transmitting beam failure recovery requests are configured in the cell group to which the first cell belongs, the target BFRQ is transmitted through the PUCCH associated with the first BFD RS set or the second BFD RS set.

[0402] Multiple PUCCHs for sending beam failure recovery requests are configured in the cell group where the first cell is located. When the terminal receives a beam failure recovery response (BFRR) corresponding to the second BFD RS set, the target BFRQ is sent through the nearest PUCCH associated with the first BFD RS set or the second BFD RS set.

[0403] When the terminal receives the BFRR corresponding to the second BFD RS set, the target BFRQ is sent on the uplink grant scheduled by the BFRR corresponding to the second BFD RS set.

[0404] When the network-side device is configured with a CFRA associated with the first BFD RS set, the target BFRQ is sent via the CFRA;

[0405] If the network-side device is not configured with a CFRA associated with the first BFD RS set, the target BFRQ is sent via CBRA.

[0406] Furthermore, the beam failure condition includes a beam failure occurring in the first BFD RS set, and the terminal being in the beam failure recovery request process for a beam failure occurring in the second BFD RS set.

[0407] The first cell is a secondary cell, and the target BFRQ includes beam failure recovery information of the first BFD RS set;

[0408] The terminal sending a Target Beam Failure Recovery Request (BFRQ) includes any one of the following:

[0409] Send the target BFRQ on the nearest available uplink grant;

[0410] In the case where multiple PUCCHs for sending beam failure recovery requests are configured in the cell group where the first cell is located, the target BFRQ is sent through the nearest PUCCH associated with the first BFD RS set;

[0411] In the case where multiple PUCCHs for transmitting beam failure recovery requests are configured in the cell group where the first cell is located, the target BFRQ is transmitted through the PUCCH associated with the first BFD RS set or the second BFD RS set;

[0412] Multiple PUCCHs for sending beam failure recovery requests are configured in the cell group where the first cell is located. When the terminal receives the BFRR corresponding to the second BFD RS set, the target BFRQ is sent through the nearest PUCCH associated with the first BFD RS set or the second BFD RS set.

[0413] When the terminal receives the BFRR corresponding to the second BFD RS set, the target BFRQ is sent on the uplink grant scheduled by the BFRR corresponding to the second BFD RS set.

[0414] Furthermore, the radio frequency unit 101 is used for:

[0415] If a beam failure occurs in the first BFD RS set and the BFRQ corresponding to the second BFD RS set is not transmitted on the PUSCH, then the beam failure recovery request process corresponding to the second BFD RS set is either continued or interrupted, and the target BFRQ is transmitted via CBRA.

[0416] If a beam failure occurs in the first BFD RS set, and the BFRQ corresponding to the second BFD RS set has been sent on the PUSCH, and the PUSCH is not multiplexed with the uplink shared transport channel UL-SCH, then the beam failure recovery request process corresponding to the second BFD RS set will continue or be interrupted, and the target BFRQ will be sent through CBRA.

[0417] The target BFRQ also includes beam failure recovery information from the second BFD RS set.

[0418] Furthermore, the radio frequency unit 101 is used for:

[0419] If a beam failure occurs in the first BFD RS set and the BFRQ corresponding to the second BFD RS set is not transmitted on the PUSCH, or if a beam failure occurs in the first BFD RS set, the BFRQ corresponding to the second BFD RS set has been transmitted on the PUSCH, and the PUSCH is not multiplexed with the uplink shared transport channel UL-SCH, then the beam failure recovery request process corresponding to the second BFD RS set will continue or be interrupted, and the target BFRQ will be transmitted via any of the following methods:

[0420] Send the target BFRQ on the nearest available uplink grant;

[0421] If a PUCCH for sending beam failure recovery requests is configured in the cell group where the first cell is located, the target BFRQ is sent through the PUCCH.

[0422] In the case where multiple PUCCHs for sending beam failure recovery requests are configured in the cell group where the first cell is located, the target BFRQ is sent by selecting one PUCCH from the multiple PUCCHs according to the fourth preset rule;

[0423] The target BFRQ is transmitted via CFRA or CBRA in the primary cell of the cell group to which the first cell is located.

[0424] Furthermore, the beam failure condition includes the simultaneous occurrence of beam failure in both the first BFD RS set and the second BFD RS set;

[0425] The first cell is the primary cell;

[0426] The terminal sends a Target Beam Failure Recovery Request (BFRQ) including:

[0427] The target BFRQ is sent via CBRA.

[0428] Furthermore, the beam failure condition includes the simultaneous occurrence of beam failure in both the first BFD RS set and the second BFD RS set;

[0429] The first cell is a secondary cell;

[0430] The terminal sending a Target Beam Failure Recovery Request (BFRQ) includes any one of the following:

[0431] Send the target BFRQ on the nearest available uplink grant;

[0432] In the case where multiple PUCCHs are configured in the cell group where the first cell is located for sending beam failure recovery requests, the target BFRQ is sent from one of the multiple PUCCHs according to the fifth preset rule.

[0433] Furthermore, the target BFRQ includes at least one of the following: the identifier of the first BFR RS set, the identifier of the second BFD RS set, and the new beam information corresponding to the first BFD RS set and the new beam information corresponding to the second BFD RS set.

[0434] Furthermore, the processor 110 is configured to reset the TCI state of the CORESET associated with the first BFD RS set and / or the TCI state of the CORESET associated with the second BFD RS set based on the target beam information.

[0435] Furthermore, the at least two BFD RS sets also include a third BFD RS set corresponding to the first cell;

[0436] The beam failure condition includes at least one of the following:

[0437] Both the first BFD RS set and the second BFD RS set experienced beam failure within the first preset time window;

[0438] The third BFD RS set experienced beam failure;

[0439] All BFD RS sets configured in the first cell experienced beam failure within the second preset time window.

[0440] Furthermore, the first residential community is the primary residential community.

[0441] The terminal sending a Target Beam Failure Recovery Request (BFRQ) includes any one of the following:

[0442] When CFRA is configured on the network-side device, the target BFRQ is sent via CFRA;

[0443] When the network-side device is not configured with CFRA, the target BFRQ is sent via CBRA.

[0444] Furthermore, the beam failure condition includes the beam failure occurring in the third BFD RS set, and the beam failure occurring in the first BFD RS set and the second BFD RS set before the beam failure occurring in the third BFD RS set.

[0445] The first cell is the primary cell, and the target BFRQ includes the beam failure recovery information of the third BFD RS set;

[0446] Radio frequency unit 101, used for:

[0447] Interrupt the beam failure recovery request process corresponding to the first BFD RS set and the second BFD RS set respectively, and send the target BFRQ via CFRA, or CBRA, or available uplink grant, or PUCCH corresponding to the third BFD RS set;

[0448] or,

[0449] In the event of a conflict between the beam failure recovery request process corresponding to the first BFD RS set and the beam failure recovery request process corresponding to the third BFD RS set, the beam failure recovery request process corresponding to the first BFD RS set is interrupted, and the target BFRQ is transmitted on the uplink grant for transmitting the BFRQ corresponding to the second BFD RS set. The target BFRQ also includes beam failure recovery information of the second BFD RS set.

[0450] Alternatively, if the beam failure recovery request process corresponding to the first BFD RS set conflicts with the beam failure recovery request process corresponding to the third BFD RS set, the beam failure recovery request process corresponding to the first BFD RS set is interrupted, and the target BFRQ is sent via CFRA, CBRA, or an available uplink grant, or the PUCCH corresponding to the third BFD RS set.

[0451] or,

[0452] The target BFRQ is transmitted on the uplink grant of the BFRQ corresponding to the second BFD RS set. The target BFRQ also includes beam failure recovery information of the first BFD RS set and / or beam failure recovery information of the second BFD RS set.

[0453] or,

[0454] The BFRQ corresponding to the first BFD RS set is sent via CFRA, or CBRA, or available uplink grant, or PUCCH corresponding to the first BFD RS set, and the target BFRQ is transmitted on the uplink grant for transmitting the BFRQ corresponding to the second BFD RS set. The target BFRQ may also include beam failure recovery information of the second BFD RS set.

[0455] Alternatively, the BFRQ corresponding to the first BFD RS set and the BFRQ corresponding to the second BFD RS set may be sent via CFRA, CBRA, or available uplink grant, or via the PUCCH corresponding to the first BFD RS set and the second BFD RS set, respectively, and the target BFRQ may be sent via CFRA, CBRA, or available uplink grant, or via the PUCCH corresponding to the third BFD RS set.

[0456] Furthermore, the beam failure condition includes the beam failure occurring in the third BFD RS set, and the beam failure occurring in the first BFD RS set and the second BFD RS set before the beam failure occurring in the third BFD RS set.

[0457] The first cell is the primary cell, and the target BFRQ includes the beam failure recovery information of the third BFD RS set;

[0458] The processor 110 is used for:

[0459] If the terminal interrupts the beam failure recovery request process corresponding to the first BFD RS set and the second BFD RS set respectively, the TCI state of the corresponding CORESET is reset according to the target beam information, or the TCI state of all CORESETs corresponding to the first cell is reset.

[0460] or,

[0461] If the terminal interrupts the beam failure recovery request process corresponding to the first BFD RS set and continues to execute the beam failure recovery request process corresponding to the second BFD RS set, if the first new beam information carried by the BFRQ associated with the second BFD RS set corresponds to the same TRP as the target beam information, then the TCI status of the corresponding CORESET or the TCI status of all CORESETs corresponding to the first cell is reset according to the target beam information.

[0462] or,

[0463] If the terminal interrupts the beam failure recovery request process corresponding to the first BFD RS set and continues to execute the beam failure recovery request process corresponding to the second BFD RS set, if the first new beam information carried by the BFRQ associated with the second BFD RS set corresponds to a different TRP as the target beam information, then the TCI state of the corresponding CORESET is reset according to the target beam information, and the TCI state of the corresponding CORESET is reset according to the first new beam information.

[0464] Alternatively, if the terminal continues to execute the beam failure recovery request process corresponding to the first BFD RS set and continues to execute the beam failure recovery request process corresponding to the second BFD RS set, the TCI state of the CORESET corresponding to the new beam information of each of the first BFD RS set and the second BFD RS set is reset according to the new beam information carried by the BFRQ associated with each of the two sets, and the TCI state of the corresponding CORESET is reset according to the target beam information.

[0465] or,

[0466] If the terminal continues to execute the beam failure recovery request process corresponding to the first BFD RS set and continues to execute the beam failure recovery request process corresponding to the second BFD RS set, the TCI status of the corresponding CORESET is reset according to the target beam information, or the TCI status of all CORESETs corresponding to the first cell is reset.

[0467] or,

[0468] If the terminal continues to execute the beam failure recovery request process corresponding to the first BFD RS set and continues to execute the beam failure recovery request process corresponding to the second BFD RS set, the second new beam information and the third new beam information are selected from the candidate new beam information according to the third preset rule to reset the TCI status of their respective CORESETs, or the TCI status of all CORESETs corresponding to the first cell is reset, and the second new beam information and the third new beam information are associated with different BFD RS sets;

[0469] The candidate new beam information includes the new beam information carried by the BFRQ associated with the first BFD RS set, the new beam information carried by the BFRQ associated with the second BFD RS set, and the target beam information.

[0470] Furthermore, the first cell is a secondary cell, and the target BFRQ includes the beam failure recovery information of the third BFD RS set;

[0471] The terminal sending a Target Beam Failure Recovery Request (BFRQ) includes any one of the following:

[0472] Send the target BFRQ on the nearest available uplink grant;

[0473] If only one PUCCH is configured in the cell group where the first cell is located for sending beam failure recovery requests, the target BFRQ is sent through the PUCCH.

[0474] In the case where multiple PUCCHs are configured in the cell group to which the first cell is located for sending beam failure recovery requests, the target BFRQ is sent by selecting one PUCCH from the multiple PUCCHs according to the first preset rule.

[0475] Furthermore, the at least two BFD RS sets also include a fourth BFD RS set, which is either the BFD RS set corresponding to the second cell or the BFD RS set corresponding to the TRP in the second cell.

[0476] The second cell is in the same cell group as the first cell.

[0477] Furthermore, the beam failure conditions include beam failure occurring in the first BFD RS set or the second BFD RS set, and beam failure occurring in the fourth BFD RS set.

[0478] The fourth BFD RS set is the BFD RS set corresponding to the second cell, and the target BFRQ includes the beam failure recovery information of the fourth BFD RS set;

[0479] The terminal sending a Target Beam Failure Recovery Request (BFRQ) includes any one of the following:

[0480] On the most recently available uplink grant, transmit the BFRQ corresponding to the target BFD RS set and the target BFRQ, wherein the target BFD RS set is either the first BFD RS set or the second BFD RS set where beam failure has occurred.

[0481] If only one PUCCH is configured in the cell group where the second cell is located for sending beam failure recovery requests, the target BFRQ is sent through this PUCCH;

[0482] In the case where multiple PUCCHs for sending beam failure recovery requests are configured in the cell group where the second cell is located, the target BFRQ is sent by selecting one PUCCH from the multiple PUCCHs according to the second preset rule;

[0483] When the network-side device is configured with non-contention-based random access (CFRA), the target BFRQ is sent via CFRA;

[0484] If the network-side equipment is not configured with non-contention-based random access (CFRA), the target BFRQ is sent via CBRA.

[0485] Furthermore, the second preset rule includes any one of the following:

[0486] Select the most recent PUCCH from multiple PUCCHs;

[0487] Select a PUCCH from among the multiple PUCCHs that is associated with a BFD RS set that has failed or not failed from the at least two BFD RS sets;

[0488] Select the PUCCH associated with the fourth BFD RS set from among the multiple PUCCHs;

[0489] Select the PUCCH corresponding to the primary cell in the cell group where the second cell is located from multiple PUCCHs.

[0490] Furthermore, the beam failure conditions include beam failure occurring in the first BFD RS set or the second BFD RS set, and beam failure occurring in the fourth BFD RS set.

[0491] The fourth BFD RS set is the BFD RS set corresponding to the TRP of the second cell. The second cell includes at least two TRPs. The target BFRQ includes the beam failure recovery information of the fourth BFD RS set and the beam failure recovery information of the target BFD RS set.

[0492] The target BFD RS set is either the first BFD RS set or the second BFD RS set where beam failure has occurred.

[0493] The terminal sending a Target Beam Failure Recovery Request (BFRQ) includes any one of the following:

[0494] Send the target BFRQ on the nearest available uplink grant;

[0495] If only one PUCCH is configured in the cell group where the second cell is located for sending beam failure recovery requests, the target BFRQ is sent through this PUCCH;

[0496] In the case where multiple PUCCHs are configured in the cell group where the second cell is located for sending beam failure recovery requests, the target BFRQ is sent from one PUCCH or at least two PUCCHs selected from the multiple PUCCHs.

[0497] In the case where multiple PUCCHs for sending beam failure recovery requests are configured in the cell group where the second cell is located, the target BFRQ is sent by selecting one or at least two target PUCCHs from the multiple PUCCHs. The target PUCCHs include the PUCCHs that correspond to the primary cell in the cell group where the second cell is located.

[0498] When the network-side device is configured with non-contention-based random access (CFRA), the target BFRQ is sent via CFRA;

[0499] If the network-side equipment is not configured with non-contention-based random access (CFRA), the target BFRQ is sent via CBRA.

[0500] Furthermore, the beam failure conditions include beam failure occurring in the first BFD RS set or the second BFD RS set, and beam failure occurring in the fourth BFD RS set.

[0501] The target BFRQ includes beam failure recovery information of the fourth BFD RS set and beam failure recovery information of the target BFD RS set, wherein the target BFD RS set is the first BFD RS set or the second BFD RS set where beam failure occurred.

[0502] The processor 101 is used to reset the TCI state of the CORESET associated with the BFD RS set that has experienced beam failure, based on the target beam information carried by the target BFRQ.

[0503] Furthermore, the TRP can be indicated in at least one of the following ways:

[0504] Control resource pool index;

[0505] Control resource group identifier.

[0506] This application also provides a network-side device, including a processor and a communication interface. The processor is used to configure at least two sets of Beam Failure Detection Reference Signals (BFD RS) for a terminal, and the communication interface is used to receive a Target Beam Failure Recovery Request (BFRQ) and send a Beam Failure Recovery Response (BFRR) corresponding to the Target BFRQ. This network-side device embodiment corresponds to the above-described network-side device method embodiment. All implementation processes and methods of the above method embodiments can be applied to this network-side device embodiment and achieve the same technical effects.

[0507] Specifically, embodiments of this application also provide a network-side device. For example... Figure 8 As shown, the network-side device 800 includes: an antenna 81, a radio frequency (RF) device 82, and a baseband device 83. The antenna 81 is connected to the RF device 82. In the uplink direction, the RF device 82 receives information through the antenna 81 and transmits the received information to the baseband device 83 for processing. In the downlink direction, the baseband device 83 processes the information to be transmitted and sends it to the RF device 82. The RF device 82 processes the received information and then transmits it through the antenna 81.

[0508] The aforementioned frequency band processing device can be located in the baseband device 83. The method executed by the network-side device in the above embodiments can be implemented in the baseband device 83, which includes a processor 84 and a memory 85.

[0509] Baseband device 83 may include, for example, at least one baseband board on which multiple chips are disposed, such as... Figure 8 As shown, one of the chips, for example, is a processor 84, which is connected to a memory 85 to call the program in the memory 85 and execute the network device operation shown in the above method embodiment.

[0510] The baseband device 83 may also include a network interface 86 for exchanging information with the radio frequency device 82, such as a common public radio interface (CPRI).

[0511] Specifically, the network-side device in this embodiment of the invention further includes: instructions or programs stored in memory 85 and executable on processor 84, wherein processor 84 calls the instructions or programs in memory 85 to execute. Figure 5 The methods executed by each module shown achieve the same technical effect, and to avoid repetition, they will not be described in detail here.

[0512] This application also provides a readable storage medium storing a program or instructions. When the program or instructions are executed by a processor, they implement the various processes of the above-described beam failure recovery method embodiments and achieve the same technical effect. To avoid repetition, they will not be described again here.

[0513] The processor mentioned above is the processor in the terminal described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.

[0514] This application embodiment also provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the various processes of the above-described beam failure recovery method embodiments and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0515] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0516] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0517] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a computer software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0518] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A beam failure recovery method, characterized in that, The method comprises: A terminal performs measurement on at least two beam failure detection reference signal (BFD RS) sets configured by a network side device, and obtains measurement results; In a case where it is determined according to the measurement results that the at least two BFD RS sets satisfy a beam failure condition, the terminal sends a target beam failure recovery request (BFRQ); The terminal receives a beam failure recovery response (BFRR) corresponding to the target BFRQ; The terminal resets transmission configuration indication (TCI) states of part or all channels according to target beam information carried by the target BFRQ, and / or resets configuration parameters of uplink power control according to the target beam information; The at least two BFD RS sets comprise a first BFD RS set and a second BFD RS set, the first BFD RS set and the second BFD RS set correspond to different TRPs of a first cell, and the first cell is a primary cell; The beam failure condition comprises that the first BFD RS set has beam failure, and the terminal is in a beam failure recovery request process in which the second BFD RS set has beam failure; The target BFRQ comprises beam failure recovery information of the first BFD RS set and beam failure recovery information of the second BFD RS set; The terminal sending the target BFRQ comprises: In a case where the first BFD RS set has beam failure, and a BFRQ corresponding to the second BFD RS set has not been sent on a PUSCH, the terminal continues to execute or interrupts execution of a beam failure recovery request process corresponding to the second BFD RS set, and sends the target BFRQ through a contention-based random access (CBRA); The terminal resetting TCI states of part or all channels according to target beam information carried by the target BFRQ, and / or resetting configuration parameters of uplink power control according to the target beam information, comprises: The terminal resets TCI states of a CORESET associated with the first BFD RS set and / or TCI states of a CORESET associated with the second BFD RS set according to the target beam information.

2. The method of claim 1, wherein, The terminal sending the target BFRQ in a case where it is determined according to the measurement that the at least two BFD RS sets satisfy the beam failure condition, further comprises: In a case where the first BFD RS set has beam failure, a BFRQ corresponding to the second BFD RS set has been sent on a PUSCH, and the PUSCH is not multiplexed with an uplink shared transport channel (UL-SCH), the terminal continues to execute or interrupts execution of a beam failure recovery request process corresponding to the second BFD RS set, and sends the target BFRQ through a CBRA.

3. The method of claim 1, wherein, The target BFRQ comprises at least one of: An identifier of the first BFR RS set; An identifier of the second BFD RS set; New beam information corresponding to the first BFD RS set. New beam information corresponding to the second BFD RS set.

4. The method of claim 1, wherein, The at least two BFD RS sets further include a third BFD RS set corresponding to the first cell; The beam failure condition includes at least one of the following: Beam failure occurs in the first preset time window for both the first BFD RS set and the second BFD RS set; Beam failure occurs in the third BFD RS set; Beam failure occurs in the second preset time window for all BFD RS sets configured by the first cell.

5. The method of claim 4, wherein, The terminal sending the target beam failure recovery request BFRQ includes any one of the following: In the case that the network side device configures CFRA, the target BFRQ is sent through CFRA; In the case that the network side device does not configure CFRA, the target BFRQ is sent through CBRA.

6. The method of claim 4, wherein, The beam failure condition includes beam failure in the third BFD RS set, and beam failure in the first BFD RS set and the second BFD RS set before beam failure in the third BFD RS set; The target BFRQ includes beam failure recovery information of the third BFD RS set; In the case that the at least two BFD RS sets meet the beam failure condition according to the measurement, the terminal sends a target beam failure recovery request BFRQ, including: Interrupting the beam failure recovery request process corresponding to the first BFD RS set and the second BFD RS set respectively, and sending the target BFRQ through CFRA, or CBRA, or an available uplink grant, or a PUCCH corresponding to the third BFD RS set; Or, In the case that the beam failure recovery request process corresponding to the first BFD RS set conflicts with the beam failure recovery request process corresponding to the third BFD RS set, interrupting the beam failure recovery request process corresponding to the first BFD RS set, and transmitting the target BFRQ on the uplink grant for transmitting the BFRQ corresponding to the second BFD RS set, the target BFRQ further including beam failure recovery information of the second BFD RS set; Or, in the case that the beam failure recovery request process corresponding to the first BFD RS set conflicts with the beam failure recovery request process corresponding to the third BFD RS set, interrupting the beam failure recovery request process corresponding to the first BFD RS set, and sending the target BFRQ through CFRA, or CBRA, or an available uplink grant, or a PUCCH corresponding to the third BFD RS set; Or, Transmitting the target BFRQ on the uplink grant for transmitting the BFRQ corresponding to the second BFD RS set, the target BFRQ further including beam failure recovery information of the first BFD RS set and / or beam failure recovery information of the second BFD RS set; Or, The first BFD RS set corresponding BFRQ is transmitted through CFRA, or CBRA, or available uplink grant, or the PUCCH corresponding to the first BFD RS set, and the target BFRQ is transmitted on the uplink grant for transmitting the second BFD RS set corresponding BFRQ, and the target BFRQ can further include the beam failure recovery information of the second BFD RS set; Or, the first BFD RS set corresponding BFRQ and the second BFD RS set corresponding BFRQ are respectively transmitted through CFRA, or CBRA, or available uplink grant, or the PUCCH corresponding to the first BFD RS set and the second BFD RS set, and the target BFRQ is transmitted through CFRA, or CBRA, or available uplink grant, or the PUCCH corresponding to the third BFD RS set.

7. The method of claim 4, wherein, The beam failure condition includes that the third BFD RS set occurs beam failure, and the first BFD RS set and the second BFD RS set occur beam failure before the third BFD RS set occurs beam failure; The target BFRQ includes the beam failure recovery information of the third BFD RS set; The terminal resets the transmission configuration indication (TCI) state of part of channels or all channels according to the target beam information carried by the target BFRQ, and / or resets the configuration parameters of uplink power control, including: In the case that the terminal interrupts the beam failure recovery request process corresponding to the first BFD RS set and the second BFD RS set, the TCI state of the CORESET corresponding to the target beam information is reset, or the TCI state of all CORESETs corresponding to the first cell is reset; Or, In the case that the terminal interrupts the beam failure recovery request process corresponding to the first BFD RS set and continues to execute the beam failure recovery request process corresponding to the second BFD RS set, if the first new beam information carried by the BFRQ associated with the second BFD RS set and the target beam information correspond to the same TRP, the TCI state of the CORESET corresponding to the target beam information or the TCI state of all CORESETs corresponding to the first cell is reset; Or, In a case that the terminal interrupts a beam failure recovery request process corresponding to the first BFD RS set and continues to execute a beam failure recovery request process corresponding to the second BFD RS set, if first new beam information carried by a BFRQ associated with the second BFD RS set and the target beam information correspond to different TRPs, a TCI state of a CORESET corresponding to the target beam information is reset according to the target beam information, and a TCI state of a CORESET corresponding to the first new beam information is reset according to the first new beam information; Or, in a case that the terminal continues to execute the beam failure recovery request process corresponding to the first BFD RS set and continues to execute the beam failure recovery request process corresponding to the second BFD RS set, TCI states of CORESETs corresponding to new beam information carried by BFRQs associated with the first BFD RS set and the second BFD RS set are reset according to the new beam information, and a TCI state of a CORESET corresponding to the target beam information is reset according to the target beam information; Or, In a case that the terminal continues to execute the beam failure recovery request process corresponding to the first BFD RS set and continues to execute the beam failure recovery request process corresponding to the second BFD RS set, a TCI state of a CORESET corresponding to the target beam information is reset according to the target beam information, or TCI states of all CORESETs corresponding to the first cell are reset; Or, In a case that the terminal continues to execute the beam failure recovery request process corresponding to the first BFD RS set and continues to execute the beam failure recovery request process corresponding to the second BFD RS set, second new beam information and third new beam information associated with different BFD RS sets are selected from candidate new beam information according to a third preset rule to reset TCI states of CORESETs corresponding to the second new beam information and the third new beam information respectively, or TCI states of all CORESETs corresponding to the first cell are reset. The candidate new beam information includes new beam information carried by a BFRQ associated with the first BFD RS set, new beam information carried by a BFRQ associated with the second BFD RS set, and the target beam information.

8. The method of claim 1, wherein, The at least two BFD RS sets further include a fourth BFD RS set, the fourth BFD RS set being a BFD RS set corresponding to a second cell or a BFD RS set corresponding to a TRP in the second cell; The second cell and the first cell are in a same cell group.

9. The method of claim 8, wherein, The beam failure condition includes that the first BFD RS set or the second BFD RS set occurs beam failure, and the fourth BFD RS set occurs beam failure. The fourth BFD RS set is a BFD RS set corresponding to a second cell, and the target BFRQ includes beam failure recovery information of the fourth BFD RS set; The terminal sending a target beam failure recovery request BFRQ includes any one of the following: In a case where a cell group where the second cell is located is configured with only one PUCCH for sending a beam failure recovery request, the target BFRQ is sent through the PUCCH; In a case where the cell group where the second cell is located is configured with multiple PUCCHs for sending a beam failure recovery request, the target BFRQ is sent through a PUCCH selected from the multiple PUCCHs according to a second preset rule; In a case where a network-side device is configured with a contention-free random access CFRA, the target BFRQ is sent through the CFRA; In a case where the network-side device is not configured with the contention-free random access CFRA, the target BFRQ is sent through a CBRA. The second preset rule includes any one of the following:

10. The method of claim 9, wherein, A latest PUCCH is selected from the multiple PUCCHs; A PUCCH associated with a failed or unfailed BFD RS set in the at least two BFD RS sets is selected from the multiple PUCCHs; A PUCCH associated with the fourth BFD RS set is selected from the multiple PUCCHs; A PUCCH corresponding to a primary cell in the cell group where the second cell is located is selected from the multiple PUCCHs. The beam failure condition includes that the first BFD RS set or the second BFD RS set has a beam failure, and the fourth BFD RS set has a beam failure; 11. The method of claim 8, wherein, The fourth BFD RS set is a BFD RS set corresponding to a TRP of a second cell, the second cell includes at least two TRPs, and the target BFRQ includes beam failure recovery information of the fourth BFD RS set and beam failure recovery information of a target BFD RS set; The target BFD RS set is the first BFD RS set or the second BFD RS set that has a beam failure; The terminal sending a target beam failure recovery request BFRQ includes any one of the following: The target BFRQ is sent on a latest available uplink grant; In a case where a cell group where the second cell is located is configured with only one PUCCH for sending a beam failure recovery request, the target BFRQ is sent through the PUCCH; In a case where the cell group where the second cell is located is configured with multiple PUCCHs for sending a beam failure recovery request, the target BFRQ is sent through one PUCCH or at least two PUCCHs selected from the multiple PUCCHs; ​ In a case where a plurality of PUCCHs for sending a beam failure recovery request are configured in a cell group in which the second cell is located, one or at least two target PUCCHs are selected from the plurality of PUCCHs to send the target BFRQ, and the target PUCCHs include a PUCCH corresponding to a primary cell in the cell group in which the second cell is located among the plurality of PUCCHs; In a case where the network-side device configures a contention-free random access CFRA, the target BFRQ is sent through the CFRA; In a case where the network-side device does not configure the contention-free random access CFRA, the target BFRQ is sent through a CBRA.

12. The method of claim 8, wherein, The beam failure condition includes that the first BFD RS set or the second BFD RS set has a beam failure, and the fourth BFD RS set has a beam failure; The target BFRQ includes beam failure recovery information of the fourth BFD RS set and beam failure recovery information of a target BFD RS set, and the target BFD RS set is the first BFD RS set or the second BFD RS set that has a beam failure; The terminal resets a transmission configuration indication TCI state of part of channels or all channels according to target beam information carried by the target BFRQ, and / or resets a configuration parameter of uplink power control according to the target beam information, including: The TCI state of a CORESET associated with a BFD RS set that has a beam failure is reset according to target beam information carried by the target BFRQ.

13. The method of claim 1 wherein, The TRP can be indicated in at least one of the following ways: A control resource set pool index; A control resource group identifier. 14.A method for beam failure recovery, the method comprising: Including: The network-side device configures at least two beam failure detection reference signal BFD RS sets for the terminal, the at least two BFD RS sets include a first BFD RS set and a second BFD RS set, the first BFD RS set and the second BFD RS set correspond to different TRPs of a first cell, and the first cell is a primary cell; The network-side device receives a target beam failure recovery request BFRQ, the target BFRQ is sent by the terminal through a contention-based random access CBRA in a case where the at least two BFD RS sets are measured and it is determined according to a measurement result that the at least two BFD RS sets satisfy a beam failure condition, the beam failure condition includes that the first BFD set has a beam failure, and the terminal is in a beam failure recovery request process in which the second BFD RS set has a beam failure; The network-side device sends a beam failure recovery response BFRR corresponding to the target BFRQ, so that the terminal resets a transmission configuration indication TCI state of part of channels or all channels according to target beam information carried by the target BFRQ, and / or resets a configuration parameter of uplink power control according to the target beam information; The terminal sends the target BFRQ through the CBRA, specifically including: In a case that the first BFD RS set occurs beam failure and the second BFD RS set corresponding BFRQ is not sent on PUSCH, continuing to perform or interrupting to perform the beam failure recovery request procedure corresponding to the second BFD RS set, and sending the target BFRQ through CBRA; The target BFRQ includes beam failure recovery information of the first BFD RS set and beam failure recovery information of the second BFD RS set; The terminal resets a transmission configuration indication (TCI) state of part of channels or all channels according to target beam information carried by the target BFRQ, and / or resets a configuration parameter of uplink power control according to the target beam information, including: The terminal resets a TCI state of a CORESET associated with the first BFD RS set and / or a TCI state of a CORESET associated with the second BFD RS set according to the target beam information.

15. The method of claim 14, wherein, The at least two BFD RS sets further include a third BFD RS set corresponding to the first cell.

16. The method of claim 14, wherein, The at least two BFD RS sets further include a fourth BFD RS set, the fourth BFD RS set being a BFD RS set corresponding to a second cell or a BFD RS set corresponding to a TRP in the second cell. The second cell is in a same cell group as the first cell.

17. The method of claim 14, wherein, The TRP can be indicated by at least one of the following: A control resource set pool index; A control resource group identifier.

18. An apparatus for beam failure recovery, the apparatus comprising: The method includes: A measurement module configured to measure at least two beam failure detection reference signal (BFD RS) sets configured by a network side device to obtain a measurement result; A sending module configured to send a target beam failure recovery request (BFRQ) in a case that the at least two BFD RS sets satisfy a beam failure condition according to the measurement result; A receiving module configured to receive a beam failure recovery response (BFRR) corresponding to the target BFRQ; A resetting module configured to reset a transmission configuration indication (TCI) state of part of channels or all channels according to target beam information carried by the target BFRQ, and / or reset a configuration parameter of uplink power control according to the target beam information. The at least two BFD RS sets include a first BFD RS set and a second BFD RS set, the first BFD RS set and the second BFD RS set corresponding to different TRPs of a first cell, the first cell being a primary cell; The beam failure condition includes that the first BFD RS set occurs beam failure and the terminal is in a beam failure recovery request procedure in which the second BFD RS set occurs beam failure; The target BFRQ includes beam failure recovery information of the first BFD RS set and beam failure recovery information of the second BFD RS set; The sending module is specifically configured to: In a case that the first BFD RS set occurs beam failure and the BFRQ corresponding to the second BFD RS set is not sent on the PUSCH, the beam failure recovery request procedure corresponding to the second BFD RS set is continued to be executed or interrupted to be executed, and the target BFRQ is sent through the CBRA. The resetting module is specifically configured to: reset a TCI state of a CORESET associated with the first BFD RS set and / or reset a TCI state of a CORESET associated with the second BFD RS set according to the target beam information.

19. An apparatus for beam failure recovery, the apparatus comprising: comprise: The configuration module is configured to configure at least two BFD RS sets for a terminal, the at least two BFD RS sets comprising a first BFD RS set and a second BFD RS set, the first BFD RS set and the second BFD RS set corresponding to different TRPs of a first cell, the first cell being a primary cell; The receiving module is configured to receive a target BFRQ, the target BFRQ being sent by the terminal through the CBRA in a case that the at least two BFD RS sets are measured and it is determined according to a measurement result that the at least two BFD RS sets satisfy a beam failure condition, the beam failure condition comprising that the first BFD set occurs beam failure and the terminal is in a beam failure recovery request procedure in which the second BFD RS set occurs beam failure; The sending module is configured to send a BFRR corresponding to the target BFRQ, so that the terminal resets a TCI state of part of channels or all channels and / or resets a configuration parameter of uplink power control according to target beam information carried by the target BFRQ; The terminal sends the target BFRQ through the CBRA specifically comprises: In a case that the first BFD RS set occurs beam failure and the BFRQ corresponding to the second BFD RS set is not sent on the PUSCH, the beam failure recovery request procedure corresponding to the second BFD RS set is continued to be executed or interrupted to be executed, and the target BFRQ is sent through the CBRA; The target BFRQ comprises beam failure recovery information of the first BFD RS set and beam failure recovery information of the second BFD RS set; The terminal resets a TCI state of part of channels or all channels and / or resets a configuration parameter of uplink power control according to target beam information carried by the target BFRQ, which comprises: The terminal resets a TCI state of a CORESET associated with the first BFD RS set and / or resets a TCI state of a CORESET associated with the second BFD RS set according to the target beam information.

20. A terminal, characterized by A computer readable storage medium having stored thereon a program or instructions, which when executed by a processor, implement the steps of the beam failure recovery method according to any one of claims 1 to 13, or implement the steps of the beam failure recovery method according to any one of claims 14 to 17.

21. A network-side device, comprising: A computer readable storage medium having stored thereon a program or instructions, which when executed by a processor, implement the steps of the beam failure recovery method according to any one of claims 1 to 13, or implement the steps of the beam failure recovery method according to any one of claims 14 to 17.

22. A readable storage medium, characterized by, A computer readable storage medium having stored thereon a program or instructions, which when executed by a processor, implement the steps of the beam failure recovery method according to any one of claims 1 to 13, or implement the steps of the beam failure recovery method according to any one of claims 14 to 17.

Images