Beam Failure Determination Method, Apparatus, Device, and Storage Medium

Abstract

A beam failure determination method, device, terminal, and storage medium, relating to the field of communications technology, the method includes a step (402) of determining N reference signal resource sets for beam failure detection and a transmission / reception point (TRP) identifier corresponding to each of the reference signal resource sets, wherein the N reference signal resource sets include at least two different reference signal resource sets, the TRP identifiers corresponding to the at least two reference signal resource sets are different, and the physical cell identifiers corresponding to the at least two reference signal resource sets are the same.

Description

Technical Field

[0001] This application relates to the field of mobile communications, and particularly to a beam failure determination method, apparatus, terminal, and medium.

Background Art

[0002] In a new radio (NR) system, especially when the communication frequency band is in frequency band range 2, since the high-frequency channel rapidly attenuates, it is necessary to use beam-based transmission and reception to ensure coverage.

[0003] In the NR system, since the control channel also needs to use beam-based transmission and reception, when the user equipment (UE) moves or the direction of the antenna rotates, there may be problems with the reception beam or transmission beam currently configured for the UE to transmit and receive the physical downlink control channel (PDCCH), that is, the problem of beam failure occurs. The current communication protocol defines a reference signal resource set q0 for detecting beam failure. When the UE detects that the radio link quality of all reference signals within these reference signal resource sets is lower than threshold #1, it indicates that a beam failure has occurred. At this time, based on the reference signal resource set q1 for determining candidate beams configured by the base station, the UE detects whether there is a reference signal whose reference signal received power (RSRP) satisfies threshold #2 for each reference signal within the reference signal resource set. If so, when the UE notifies the base station that a beam failure has occurred, it can also notify a new candidate beam so that the base station configures a new beam for the terminal.

Summary of the Invention

Problems to be Solved by the Invention

[0004] Embodiments of the present application provide a beam failure determination method, apparatus, terminal, and medium, and can realize the recovery of network devices for beam failure in a single TRP in a scenario of multiple TRPs. The technical solution is as follows.

Means for Solving the Problem

[0005] According to one aspect of the present application, there is provided a beam failure determination method applied to a terminal. The method includes determining N reference signal resource sets for beam failure detection and a TRP identifier corresponding to each of the reference signal resource sets, where there are at least two different reference signal resource sets among the N reference signal resource sets, the TRP identifiers corresponding to the at least two reference signal resource sets are different, and the physical cell identifiers corresponding to the at least two reference signal resource sets are the same.

[0006] According to another aspect of the present application, there is provided a beam failure determination method applied to a network device. The method includes transmitting configuration information, where the configuration information includes at least one of the N reference signal resource sets for beam failure detection and configuring, for the terminal, a transceiver point (TRP) identifier corresponding to each of the reference signal resource sets in the at least one reference resource set, provided that there are at least two different reference signal resource sets among the N reference signal resource sets, the TRP identifiers corresponding to the at least two reference signal resource sets are different, and the physical cell identifiers corresponding to the at least two reference signal resource sets are the same. Signal

[0007] ​According to another aspect of the present application, a beam failure determination apparatus is provided, the apparatus including a determination module for determining N sets of reference signal resources for beam failure detection and a transceiver point (TRP) identifier corresponding to each of the sets of reference signal resources, where there are at least two different sets of reference signal resources among the N sets of reference signal resources, the TRP identifiers corresponding to the at least two different sets of reference signal resources are different, and the physical cell identifiers corresponding to the at least two different sets of reference signal resources are the same.

[0008] According to another aspect of the present application, a beam failure determination apparatus is provided, the apparatus including a configuration module for transmitting configuration information, where the configuration information includes at least one set of reference signal resources among the N sets of reference signal resources for beam failure detection and a transceiver point (TRP) identifier corresponding to each of the at least one set of reference signal resources, and the configuration module configures the terminal, where there are at least two different sets of reference signal resources among the N sets of reference signal resources, the TRP identifiers corresponding to the at least two different sets of reference signal resources are different, and the physical cell identifiers corresponding to the at least two different sets of reference signal resources are the same.

[0009] According to another aspect of the present application, a terminal is provided, the terminal including a processor, a transceiver connected to the processor, and a memory for storing executable instructions of the processor, where the processor is configured to load and execute the executable instructions to implement the above beam failure determination method.

[0010] According to another aspect of the present application, a network device is provided, the network device including a processor, a transceiver connected to the processor, and a memory for storing executable instructions of the processor, where the processor is configured to load and execute the executable instructions to implement the above beam failure determination method.

[0011] According to another aspect of the present application, there is provided a computer-readable storage medium storing executable instructions, and the executable instructions are loaded and executed by the processor to implement the above beam failure determination method.

Advantages of the Invention

[0012] The technical solution provided by the embodiments of the present application includes at least the following beneficial effects. By setting at least two reference signal resource sets in the terminal, the TRP identifiers corresponding to the at least two reference signal resource sets are different and the physical cell identifiers are the same. Therefore, when a beam failure occurs in any one of the multiple TRPs of the same serving cell, the terminal can accurately determine the beam failure event of the TRP, and further accurately notify the base station of the determination of the beam failure, thereby avoiding waste of communication resources.

Brief Description of the Drawings

[0013] To more clearly illustrate the technical solution of the embodiments of the present application, the following briefly introduces the drawings necessary for use in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative efforts.

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Embodiments for Carrying out the Invention

[0014] To make the objectives, technical solutions, and advantages of the present application clearer, the embodiments of the present application will be described in more detail below in conjunction with the accompanying drawings.

[0015] In all the following embodiments of the present disclosure, different steps are numbered with numbers, but these numbers are numbers assigned for clarity of the characters and do not limit the execution order or time slot of the steps. In all embodiments of the present disclosure, these numbered steps can be implemented individually or can be implemented in any combination. When these steps are implemented in any combination, their execution order is not limited by the numbered numbers, that is, they can be executed in any order.

[0016] First, some technical terms related to the present application will be briefly explained.

[0017] 〈Random Access Process〉 The random access process refers to the process from when the terminal device transmits a preamble, attempts to access the network, and until a basic signaling connection is established with the network. The random access process is one of the most fundamental requirements for any cellular communication system and is used to establish data communication between the terminal device and the network side. The random access process can be divided into a 4-step random access and a 2-step random access.

[0018] 〈4-Step Random Access〉 Figure 1 shows the 4 steps of the random access process in a contention-based random access process, as follows.

[0019] (1) The terminal device transmits Message 1: preamble to the network device. The terminal device transmits a preamble to the network device, and the network device estimates the transmission delay of the terminal device based on this to achieve uplink synchronization.

[0020] (2) The network device transmits Message 2: Random Access Response (RAR) to the terminal device. The network device transmits a timing advance command to adjust the transmission time of the terminal device based on the transmission delay estimated in the above step (1). Message 2 is compiled by the Media Access Control (MAC) layer of the network device and hosted by the Down Link Share Channel (DL_SCH). The network device schedules Message 2 using the Physical Downlink Control Channel (PDCCH), and addresses (also called scrambling) via the C-RNTI or RA-RNTI. The RA-RNTI is determined by the time-frequency resource position of the Physical Random Access Channel (PRACH) that hosts Message 1. Message 2 includes the timing advance of the uplink transmission, and allocates uplink resources and a temporary C-RNTI to Message 3.

[0021] (3) The terminal device transmits Message 3: the first scheduled transmission to the network device. After receiving Message 2, the terminal device transmits Message 3 on the allocated uplink resources and transmits the User Equipment Identify (UE ID) to the network device via the Physical Uplink Share Channel (PUSCH).

[0022] (4) The network device transmits Message 4: the contention resolution message to the terminal device. The network device transmits the contention resolution message to the terminal device on the Physical Downlink Share Channel (PDSCH).

[0023] 〈Two-step random access〉 In the process of contention-based random access, the four-step random access process can be integrated into a two-step random access process. Combined with Figure 2, it includes Message A and Message B after integration, and the related steps are as follows. (1) The terminal device transmits Message A to the network device. (2) After the network device receives message A sent from the terminal device, it sends message B to the terminal device.

[0024] Optionally, message A includes the content of message 1 and message 3. That is, message A includes a preamble and a UE ID. The UE ID may be one of a Cell Radio Network Temporary Identifier (C-RNTI), a temporary C-RNTI, a Random Access Radio Network Temporary Identifier (RA-RNTI), and a Non-Access Stratum UE ID.

[0025] Optionally, message B includes the content of message 2 and message 4. That is, message B includes a random access response and a contention resolution message.

[0026] Figure 3 is a block diagram of a communication system provided by an exemplary embodiment of the present disclosure. The communication system can include an access network 12 and a terminal device 14.

[0027] The access network 12 includes several network devices 120. The network device 120 may be a base station, and the base station is a device that is arranged in the access network and provides a wireless communication function to the terminal device. The base station can include various types of macro cells, micro base stations, relay stations, access points, etc. In systems adopting different radio access technologies, the names of the devices with base station functions may be different. For example, in the LTE system, it is called eNodeB or eNB, and in the 5G NR system, it is called gNodeB or gNB. As the communication technology evolves, the description of the "base station" may change. To facilitate the description of the embodiments of the present disclosure, the device that provides a wireless communication function to the above terminal device 14 is generically referred to as a network device. In vehicle network communication, the network device may be an in-vehicle terminal device.

[0028] The terminal device 14 can include various handheld devices, in-vehicle devices, wearable devices, computing devices or Internet of Things (IoT) devices or Industry Internet of Things (IIoT) devices or other processing devices connected to a wireless modem, which have a wireless communication function, and various forms of user devices, mobile stations (MS), terminal devices, etc. To facilitate the description, the devices described above are generically referred to as terminal devices. Between the network device 120 and the terminal device 14, they communicate with each other through a certain air interface technology, such as the Uu interface.

[0029] The technical solutions of the embodiments of the present disclosure can be applied to various communication systems, such as Frequency Division Duplex (FDD) systems, Time Division Duplex (TDD) systems, Advanced long Term Evolution (LTE-A) systems, New Radio (NR) systems, evolved systems of NR systems, LTE-based access to Unlicensed spectrum (LTE-U) systems, NR-U systems, Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication systems, Wireless Local Area Networks (WLAN), Wireless Fidelity (WiFi), next-generation communication systems, or other communication systems, etc.

[0030] Generally, conventional communication systems support a limited number of connections and are easy to implement. However, with the development of communication technologies, mobile communication systems support not only conventional communications but also, for example, Device-to-Device (D2D) communication, Machine-to-Machine (M2M) communication, Machine-Type Communication (MTC), Vehicle-to-Vehicle (V2V) communication, and Vehicle-to-Everything (V2X) systems. The embodiments of the present application can also be applied to these communication systems.

[0031] Each serving cell of the terminal has at most one q0 and one q1 for each bandwidth part (BWP) of the Primary Cell (Pcell), Primary Secondary Cell (PScell), and Secondary Cell (SCell), and they are not configured otherwise. q0 is a reference signal resource set for beam failure detection, and q1 is a reference signal resource set for candidate beam discovery. Even if multiple TRPs are configured for the terminal to transmit PDCCH in the activation BWP for one serving cell, only one q0 and one q1 are configured for the serving cell only. Therefore, since both q0 and q1 are configured for the serving cell, there is a technical problem of not distinguishing multiple TRPs of the serving cell. However, in reality, when the terminal is configured to monitor the PDCCH of multiple TRPs of the serving cell, if a beam failure occurs in the PDCCH of TRP1 but the beam link of TRP2 is normal, since the base station does not know the beam status on the UE side, the base station continues to use TRP1 and TRP2 to transmit PDCCH to the terminal. If the PDCCH indication content transmitted by TRP1 and TRP2 is the same, that is, if TRP1 repeatedly transmits the PDCCH of TRP2, the occurrence of a beam failure in TRP1 will affect the reliability of the PDCCH. If the PDCCH transmitted by TRP1 is only for scheduling the PDSCH or PUSCH of TRP1, the occurrence of a beam failure in TRP1 will affect the waste of PDCCH resources and PDSCH / PUSCH resources, and increase the power consumption of the terminal for monitoring unnecessary PDCCH.

[0032] FIG. 4 is a flowchart of a beam failure determination method provided by an embodiment of the present application. This method is illustrated by applying it to the terminal shown in FIG. 1. This method includes the following step 402.

[0033] Step 402: Determine N reference signal resource sets for beam failure detection and the TRP identifier corresponding to each reference signal resource set. Among the N reference signal resource sets, there are at least two different reference signal resource sets. The TRP identifiers corresponding to the at least two reference signal resource sets are different, and the physical cell identifiers corresponding to the at least two reference signal resource sets are the same.

[0034] Exemplarily, reference signal resource set 1 corresponds to TPR1, and reference signal resource set 2 corresponds to TRP2. Here, TRP1 and TRP2 are two different TRPs, and TRP1 and TRP2 correspond to the same serving cell 1.

[0035] The correspondence between the N reference signal resource sets and the N TRP identifiers may be any of the following four methods. · The TRP identifier includes a control resource set index identifier (CORESET pool index), and the control resource set index identifier corresponds to the TRP one-to-one. · The TRP identifier includes a reference signal resource set index, and the reference signal resource set index corresponds to the TRP one-to-one. · The TRP identifier includes a reference signal resource index, and the reference signal resource index corresponds to the TRP one-to-one. · The TRP identifier includes a TRP number.

[0036] Exemplarily, the physical cell identifier includes the physical cell identifier of the terminal's serving cell and / or adjacent cell.

[0037] Exemplarily, the reference signal resource is a synchronization signal block (Synchronization Signal Block, SSB), Channel State Information Reference Signal (CSI-RS), Positioning Reference Signal (PRS), Tracking Reference Signal (TRS), and includes at least one of the Sounding Reference Signals (SRS).

[0038] In summary, the method provided by this embodiment sets at least two reference signal resource sets for the terminal, so that the TRP identifiers corresponding to the at least two reference signal resource sets are different and the physical cell identifiers are the same. Therefore, when a beam failure occurs in any one of the multiple TRPs of the same serving cell, the terminal can accurately determine the beam failure event of the TRP, and further accurately notify the base station of the beam failure decision, avoiding waste of communication resources.

[0039] In an alternative embodiment based on FIG. 4, step 402 may be implemented in any of the following three ways.

[0040] 1. The network device sends first configuration information to the terminal, and the first configuration information is used to configure N reference signal resource sets and the TRP identifiers corresponding to the N reference signal resource sets. The terminal receives the first configuration information from the network device and determines N reference signal resource sets for beam failure detection based on the first configuration information. Table 1 schematically shows the N reference signal resource sets.

[0041]

Table 1

[0042] 2. The terminal determines N default reference signal resource sets and the TRP identifiers corresponding to the N reference signal resource sets.

[0043] For each of these N TRPs, the default reference signal resource set is the reference signal resource set corresponding to the target TCI state, and the target TCI state is the Transmission Configuration Indication (TCI) state when the terminal monitors the PDCCH in the CORESET corresponding to that TRP, which is configured for the terminal.

[0044] For example, for TRP1, the default reference signal resource set corresponding to TRP1 includes the reference signal resources corresponding to TCI state 1, and TCI state 1 is the TCI state when the terminal monitors the PDCCH in the CORESET corresponding to TRP1, which is configured for the terminal. Also, for example, for TRP2, the default reference signal resource set corresponding to TRP2 includes the reference signal resources corresponding to TCI state 2, and TCI state 2 is the TCI state when the terminal monitors the PDCCH in the CORESET corresponding to TRP2, which is configured for the terminal. Table 2 schematically shows the N reference signal resource sets.

[0045] [Table 2]

[0046] Note that each element in Table 2 exists individually, and although these elements are illustratively listed in the same table, it does not mean that all elements in the table must exist simultaneously as shown in the table. The value of each element does not depend on the values of the other elements in Table 2. Therefore, those skilled in the art can understand that the value of each element in this Table 2 is an individual embodiment.

[0047] 3. The network device transmits second configuration information to the terminal, and the second configuration information is used to constitute a first partial reference signal resource set among N reference signal resource sets and a TRP identifier corresponding to the first partial reference signal resource set. The terminal receives the second configuration information from the network device and determines the first partial reference signal resource set based on the second configuration information. Further, the terminal further determines a default second partial reference signal resource set, and the second partial reference signal resource set is the remaining set other than the first partial reference signal resource set among the N reference signal resource sets.

[0048] FIG. 5 is a flowchart of a beam failure determination method provided by an embodiment of the present application. This method is illustrated by applying it to the terminal shown in FIG. 1. This method includes the following steps 502 to 506.

[0049] Step 502, the terminal determines N reference signal resource sets for beam failure detection and a TRP identifier corresponding to each reference signal resource set.

[0050] Among the N reference signal resource sets, there are at least two different reference signal resource sets, the TRP identifiers corresponding to the at least two reference signal resource sets are different, and the physical cell identifiers corresponding to the at least two reference signal resource sets are the same.

[0051] Exemplarily, reference signal resource set 1 corresponds to TPR1, and reference signal resource set 2 corresponds to TRP2. Here, TRP1 and TRP2 are two different TRPs, and TRP1 and TRP2 correspond to the same serving cell 1.

[0052] The correspondence relationship between the N reference signal resource sets and the N TRP identifiers may be any of the following four methods. · The TRP identifier includes a control resource set index identifier (CORESET pool index), and the control resource set index identifier corresponds to the TRP one-to-one. · The TRP identifier includes a reference signal resource set index, and the reference signal resource set index corresponds one-to-one to the TRP. · The TRP identifier includes a reference signal resource index, and the reference signal resource index corresponds one-to-one to the TRP. · The TRP identifier includes a TRP number.

[0053] Step 504. When the reference signal in the first reference signal resource set among at least two reference signal resource sets meets the beam failure condition, the terminal determines that a beam failure has occurred on the first TRP corresponding to the first reference signal resource set.

[0054] Exemplarily, the beam failure condition includes that the radio link quality of the reference signal is less than a threshold.

[0055] Optionally, the radio link quality of the reference signal is represented by the L1-reference signal received power (RSRP). Optionally, the radio link quality of the reference signal is represented by the L1-signal-to-interference-and-noise ratio (SINR).

[0056] Step 506. When a beam failure occurs on the first TRP, the terminal sends a beam failure recovery request to the network device.

[0057] The beam failure recovery request is used to indicate that a beam failure has occurred on the first TRP, or indicates that a beam failure has occurred on a TRP but does not indicate which TRP the beam failure has occurred on, and is used to indicate which TRP the beam failure has occurred on in subsequent signaling.

[0058] In summary, in the method provided by this embodiment, when a beam failure occurs in the first TRP, the terminal sends a beam failure recovery request to the network device, so that when a beam failure occurs in any one of the TRPs in the scenario transmitted by multiple TRPs, the terminal can accurately send the beam failure recovery request to the network device.

[0059] In an alternative embodiment based on FIG. 5, there are the following two transmission methods in step 506. In Method 1, as shown in the embodiment of FIG. 6 below, a beam failure recovery request is sent via a random access time-frequency resource. In Method 2, as shown in the embodiment of FIG. 7, a beam failure recovery request is sent via the SR hosted on the Physical Uplink Control Channel (PUCCH).

[0060] For the first type of transmission method (random access time-frequency resource) of the beam failure recovery request, FIG. 6 is a flowchart of a beam failure determination method provided by an embodiment of the present application. This method is illustrated by being applied to the terminal and the network device shown in FIG. 1. This method includes the following steps 502 to 512.

[0061] Step 502, the terminal determines N reference signal resource sets for beam failure detection, and the TRP identifier corresponding to each reference signal resource set.

[0062] There are at least two different reference signal resource sets in the N reference signal resource sets, the TRP identifiers corresponding to at least two reference signal resource sets are different, and the physical cell identifiers corresponding to at least two reference signal resource sets are the same.

[0063] Step 504: When the reference signal in the first reference signal resource set among at least two reference signal resource sets satisfies the beam failure condition, the terminal determines that a beam failure has occurred for the first TRP corresponding to the first reference signal resource set.

[0064] Step 506-1: When a beam failure occurs for the first TRP, the terminal transmits a first random access preamble on a first random access time-frequency resource. The first random access preamble is used to indicate a beam failure recovery request.

[0065] In the above embodiment, Step 506-1 is a method for transmitting a first random access preamble when a beam failure occurs provided by the embodiment of the present application. Step 506-1 may be executed individually or in combination with any step of the present disclosure.

[0066] The beam failure recovery request is used to indicate that a beam failure has occurred for the first TRP, or indicates that a beam failure has occurred for a TRP but does not indicate which TRP the beam failure has occurred for, and is used to indicate which TRP the beam failure has occurred for in subsequent signaling. The first random access preamble is a preamble assigned to indicate a beam failure recovery request among a plurality of random access preambles.

[0067] This step includes, but is not limited to, at least one of the following embodiments. · When a beam failure occurs for the first TRP and the first TRP is the TRP of the PCell, transmit a first random access preamble on a first random access time-frequency resource. · When a beam failure occurs for the first TRP and the first TRP is the TRP of the PSCell, transmit a first random access preamble on a first random access time-frequency resource. If the TRP where beam failure occurs is the TRP of the PCell or PScell, and beam failure occurs in any TRP belonging to the PCell or PScell, a beam failure recovery request is sent using the first random access time-frequency resource. · If beam failure occurs in the first TRP, and the first TRP is the TRP in which CORESET#0 of the terminal in the PCell is configured, the first random access preamble is sent using the first random access time-frequency resource. · If beam failure occurs in the first TRP, and the first TRP is the TRP in which CORESET#0 of the terminal in the PScell is configured, the first random access preamble is sent using the first random access time-frequency resource.

[0068] Note that the configuration of CORESET#0 of the terminal means that the terminal receives the indication information of CORESET#0 from the first TRP before beam failure occurs in the first TRP.

[0069] For the first random time-frequency resource, exemplarily, the first random access time-frequency resource may be the random access time-frequency resource corresponding to the first TRP, or may be the random access time-frequency resource corresponding to the second TRP. The random access time-frequency resource can be abbreviated as the random access resource.

[0070] When the first random time-frequency resource is the random access time-frequency resource corresponding to the first TRP itself, the first random access time-frequency resource is the random access time-frequency resource corresponding to the first SSB transmitted by the first TRP. The method for the terminal to determine the first random access time-frequency resource can include the following. 1. For the CORESETpoolindex identifier corresponding to the first TRP The reference signal resource corresponding to the TCI state of at least one corresponding CORESET is the first SSB, and the random access time-frequency resource of the first SSB is determined as the first random access time-frequency resource. That is, the first SSB is the reference signal resource corresponding to the TCI state of at least one CORESET corresponding to the CORESET pool index identifier corresponding to the first TRP. 2. The reference signal resource corresponding to the TCI state of at least one CORESET corresponding to the CORESET pool index identifier corresponding to the first TRP is the first CSI-RS. The first SSB corresponds to the first CSI-RS, and the random access time-frequency resource of the first SSB is determined as the first random access time-frequency resource. That is, the first CSI-RS is the reference signal resource corresponding to the TCI state of at least one CORESET corresponding to the CORESET index identifier corresponding to the first TRP. 3. The network device directly indicates the first SSB corresponding to the first TRP or directly indicates the first SSB corresponding to the CORESET pool index identifier corresponding to the first TRP.

[0071] In the case where the first random time-frequency resource is the random access time-frequency resource corresponding to another TRP, The first random access time-frequency resource is the random access time-frequency resource corresponding to the second SSB, and the second SSB is the SSB transmitted by the TRP in which the terminal's CORESET #0 is configured. The TRP in which the terminal's CORESET #0 is configured may be the same as or different from the first TRP. Exemplarily, when CORESET #0 is configured in the first TRP itself where a beam failure has occurred, its own random access resource is preferentially used.

[0072] In this case, the method further includes transmitting identification information on a PUSCH of message A in a two-step random access process, where the identification information is used to indicate the identifier of the first TRP, or transmitting identification information on a PUSCH of message 3 in a four-step random access process.

[0073] That is, the terminal notifies the network device that a beam failure has occurred by means of the first random access preamble in message A or message 1, and notifies the network device that the TRP where the beam failure has occurred is the first TRP by means of message A or message 3.

[0074] Exemplarily, the identification information includes at least one of a reference signal resource set index or a reference signal resource index corresponding to the first TRP, the identifier of the first TRP, and the cell identifier of the first TRP.

[0075] Exemplarily, the reference signal resource includes at least one of SSB, CSI-RS, PRS, TRS, and SRS.

[0076] Exemplarily, the first TRP includes one or more TRPs. When the first TRP includes a plurality of TRPs, it is necessary to indicate the identification information of each TRP among the first TRPs. The plurality of TRPs may belong to different cells, or the plurality of TRPs may belong to the same cell. When the plurality of TRPs belong to the same cell and there is a TRP in the cell where no beam failure has occurred, the identification information of the plurality of TRPs where the beam failure has occurred is indicated. When beam failures have occurred in all TRPs within the cell, the identification information of the plurality of TRPs where the beam failures have occurred can be indicated respectively, or the identification information of the cell can be directly indicated.

[0077] In an alternative implementation, the network device also performs a second for discovering candidate beams Configure the reference signal resource set of [[ID=]] for the terminal. When there is a reference signal in the second reference signal resource set whose radio link quality is greater than the threshold, determine the candidate beam corresponding to the reference signal as the target candidate beam.

[0078] That is, the radio link quality of the reference signal corresponding to the target candidate beam is greater than the threshold, and the reference signal is a reference signal in the second reference signal resource set for discovering candidate beams. The radio link quality is represented by L1-RSRP or L1-SINR.

[0079] In this case, the first random access time-frequency resource is the random access time-frequency resource corresponding to the SSB corresponding to the target candidate beam.

[0080] Exemplarily, the SSB corresponding to the target candidate beam is the SSB transmitted by the first TRP or the second TRP. When the SSB corresponding to the target candidate beam is the SSB transmitted by the second TRP, the terminal also transmits identification information for indicating the first TRP on the PUSCH of message A in the two-step random access process, or transmits the identification information on the PUSCH of message 3 in the four-step random access process.

[0081] Step 508, the network device receives the first random access preamble on the first random access time-frequency resource. After the network device receives the first random access preamble transmitted from the terminal, it determines that a beam failure has occurred at the terminal.

[0082] Step 510, the network device determines the first TRP.

[0083] When the first random access time-frequency resource is the random access time-frequency resource of the first SSB, the network device determines that a beam failure has occurred at the first TRP based on the first SSB corresponding to the first random access time-frequency resource.

[0084] However, the first SSB and the first TRP are in a corresponding relationship. For example, the first SSB is a reference signal resource corresponding to the TCI state of at least one CORESET corresponding to the CORESET pool index identifier corresponding to the first TRP. Also, for example, the first SSB corresponds to the first CSI-RS, and the random access time-frequency resource of the first SSB is determined as the first random access time-frequency resource. That is, the first CSI-RS is a reference signal resource corresponding to the TCI state of at least one CORESET corresponding to the CORESET pool index identifier corresponding to the first TRP. Also, for example, the network device directly indicates the first SSB corresponding to the first TRP, or directly indicates the first SSB corresponding to the CORESET pool index identifier corresponding to the first TRP.

[0085] When the first random access time-frequency resource is an SSB transmitted by the second SSB or another TRP, the network device also receives identification information on the PUSCH of message A in the two-step random access process, determines the first TRP based on the identification information, or the network device receives identification information on the PUSCH of message 3 in the four-step random access process, and the network device determines the first TRP based on the identification information.

[0086] In an alternative implementation, the network device also configures a second reference signal resource set for the terminal to discover candidate beams. When the first random access time-frequency resource is a random access time-frequency resource corresponding to an SSB corresponding to a target candidate beam, the network device determines the target candidate beam based on the SSB corresponding to the first random access time-frequency resource.

[0087] Step 512: The network device performs beam failure recovery for the terminal with respect to the first TRP.

[0088] If there is a target candidate beam notified by the terminal, the network device performs beam failure recovery for the terminal based on the target candidate beam. For example, the network device designates the target candidate beam as the beam after recovery. If there is no target candidate beam notified by the terminal, the network device either self-designates a beam as the beam after recovery, or the network device instructs the terminal to perform beam management measurement and notification, and designates the beam after recovery based on the notification result.

[0089] In summary, in the method provided by this embodiment, when a beam failure occurs at the first TRP, the terminal transmits a first random access preamble using the first random access time-frequency resource, and indicates the first TRP by the first random access time-frequency resource or identification information, so that the network device can accurately know that a beam failure has occurred at the first TRP, and the network device can perform beam failure recovery for the terminal with respect to the first TRP.

[0090] Regarding the second type of transmission method (SR-BFR) of the beam failure recovery request, FIG. 7 is a flowchart of a beam failure determination method provided by an embodiment of the present application. This method is illustrated by being applied to the terminal and the network device shown in FIG. 1. This method includes the following steps 502 to 515.

[0091] Step 502: The terminal determines N reference signal resource sets for beam failure detection and the TRP identifier corresponding to each reference signal resource set.

[0092] Among the N reference signal resource sets, there are at least two different reference signal resource sets, the TRP identifiers corresponding to the at least two reference signal resource sets are different, and the physical cell identifiers corresponding to the at least two reference signal resource sets are the same.

[0093] Step 504. If the reference signal in the first reference signal resource set among at least two reference signal resource sets meets the beam failure condition, the terminal determines that a beam failure has occurred at the first TRP corresponding to the first reference signal resource set.

[0094] Step 506-2. If the terminal has a beam failure at the first TRP, it transmits an SR-BFR to the network device on the PUCCH. The SR-BFR is an SR for a beam failure recovery request.

[0095] Exemplarily, the PUCCH is the PUCCH of the primary cell group, or the PUCCH is the PUCCH of the secondary cell group, or the PUCCH is the PUCCH of an adjacent cell, or the PUCCH is the PUCCH transmitted by a third TRP that belongs to the same cell as the first TRP and where no beam failure has occurred, or the PUCCH is the PUCCH of a serving cell to which a non-first TRP that has no beam failure belongs.

[0096] In one example, the first TRP is the TRP of a Scell. The PUCCH is the PUCCH of the primary cell group, or the PUCCH is the PUCCH of the secondary cell group, or the PUCCH is the PUCCH transmitted by a fourth TRP in the Scell to which the first TRP belongs where no beam failure has occurred, or the PUCCH is the PUCCH of another serving cell other than the Scell to which the first TRP belongs.

[0097] In one example, the first TRP is the TRP of the PCell or PScell. The PUCCH is the PUCCH of the primary cell group, or the PUCCH is the PUCCH of the secondary cell group, or the PUCCH is the PUCCH transmitted by a fifth TRP in which no beam failure has occurred in the PCell or PScell to which the first TRP belongs, or the PUCCH is the PUCCH of another serving cell other than the PCell or PScell to which the first TRP belongs.

[0098] In one example, the first TRP is a TRP in which CORESET#0 of the terminal in the PCell or PScell is not configured. The PUCCH is the PUCCH of the primary cell group, or the PUCCH is the PUCCH of the secondary cell group, or the PUCCH is the PUCCH transmitted by a sixth TRP in which no beam failure has occurred in the PCell or PScell to which the first TRP belongs, where the sixth TRP includes a TRP in which CORESET#0 of the terminal is configured or a TRP in which CORESET#0 of the terminal is not configured, or the PUCCH is the PUCCH of another serving cell other than the PCell or PScell to which the first TRP belongs.

[0099] In one example, the first TRP is a TRP in which CORESET#0 of the terminal in the PCell or PScell is configured. The PUCCH is the PUCCH of the primary cell group, or the PUCCH is the PUCCH of the secondary cell group, or the PUCCH is the PUCCH transmitted by a seventh TRP in which no beam failure has occurred in the PCell or PScell to which the first TRP belongs, where the seventh TRP includes a TRP in which CORESET#0 of the terminal is not configured, or the PUCCH is the PUCCH of another serving cell other than the PCell or PScell to which the first TRP belongs.

[0100] In one example, the first TRP is a TRP of an adjacent cell. The PUCCH is a PUCCH of a primary cell group, or the PUCCH is a PUCCH of a secondary cell group, or the PUCCH is a PUCCH of an adjacent cell.

[0101] In the above embodiment, step 506-2 is a method for transmitting SR-BFR on the PUCCH when a beam failure occurs provided by the embodiment of the present application. Step 506-2 may be executed individually or in combination with any step of the present disclosure.

[0102] Step 507, the network device receives the SR-BFR transmitted on the PUCCH, transmits resource configuration information to the terminal, and after the network device receives the SR-BFR, determines that a beam failure has occurred at the TRP.

[0103] The network device generates resource configuration information for scheduling PUSCH resources. Optionally, the resource configuration information is included in the UL grant scheduling information, and the UL grant scheduling information is returned by the network device based on the SR-BFR.

[0104] The network device transmits UL grant scheduling information to the terminal. The UL grant scheduling information can be abbreviated as UL grant.

[0105] Step 509, the terminal receives the resource configuration information of the network device, the resource configuration information is used to allocate PUSCH resources, and the terminal receives the uplink license (UL grant) scheduling information transmitted from the network device, and determines the scheduled PUSCH resources from the UL grant. transmitted uplink license (UL grant) scheduling information, and determines the scheduled PUSCH resources from the UL grant.

[0106] Step 511, the terminal transmits identification information on the PUSCH resource, and the identification information is used to indicate the first TRP.

[0107] The terminal transmits a Medium Access Control Control Element (MAC CE) on a PUSCH resource, and the MAC CE contains identification information for indicating a first TRP.

[0108] Exemplarily, the identification information includes at least one of a control resource set index identifier corresponding to the first TRP, a reference signal resource set index or a reference signal resource index corresponding to the first TRP, an identifier of the first TRP, and a cell identifier of the first TRP.

[0109] Exemplarily, the reference signal resource includes at least one of SSB, CSI-RS, PRS, TRS, and SRS.

[0110] Exemplarily, the first TRP includes one or more TRPs. When the first TRP includes a plurality of TRPs, it is necessary to indicate the identification information of each TRP among the first TRPs. The plurality of TRPs may belong to different cells, or the plurality of TRPs may belong to the same cell. When the plurality of TRPs belong to the same cell and there is a TRP in which beam failure has not occurred in the cell, the identification information of the plurality of TRPs in which beam failure has occurred is indicated. When beam failure has occurred in all TRPs in the cell, the identification information of the plurality of TRPs in which beam failure has occurred can be indicated respectively, or the identification information of the cell can be directly indicated.

[0111] In an alternative implementation, a second reference signal resource set for discovering candidate beams is further configured for the terminal. When there is a reference signal in the second reference signal resource set whose radio link quality is greater than a threshold, the candidate beam corresponding to the reference signal is determined as a target candidate beam. That is, the radio link quality of the reference signal corresponding to the target candidate beam is greater than the threshold, and the reference signal is a reference signal in the second reference signal resource set for discovering candidate beams. The radio link quality is represented by L1-RSRP or L1-SINR.

[0112] In this case, the terminal further transmits the reference signal identifier of the target candidate beam on the PUSCH resource. The radio link quality of the reference signal corresponding to the target candidate beam is greater than a threshold, and the reference signal is a reference signal in a second reference signal resource set for discovering candidate beams.

[0113] Step 513: The network device determines, based on the identification information, that a beam failure has occurred at the first TRP. The network device receives the identification information on the PUSCH resource, and determines, based on the identification information, that a beam failure has occurred at the first TRP.

[0114] Step 515: The network device performs beam failure recovery for the terminal with respect to the first TRP.

[0115] If the PUSCH resource further includes the reference signal identifier of the target candidate beam notified by the terminal, the network device performs beam failure recovery for the terminal based on the target candidate beam. For example, the network device designates the target candidate beam as the beam after recovery. If there is no target candidate beam notified by the terminal, the network device either self-designates a beam as the beam after recovery, or the network device instructs the terminal to perform beam management measurement and reporting, and designates the beam after recovery based on the reporting result.

[0116] In summary, the method provided by this embodiment can accurately inform the network device that a beam failure has occurred at the first TRP when a beam failure occurs at the first TRP, by the terminal using SR-BFR to indicate the occurrence of the beam failure and indicating the first TRP by the identification information transmitted on the PUSCH resource, and the network device can perform beam failure recovery for the terminal with respect to the first TRP.

[0117] FIG. 8 is a flowchart of a beam failure determination method provided by an embodiment of the present application. This method is applied to network devices, and this method includes the following step 802.

[0118] Step 802: Transmit configuration information. The configuration information includes at least one of the N reference signal resource sets for beam failure detection, and for each of the at least one reference signal resource set, a transmit-receive point (TRP) identifier corresponding to the reference signal resource set is configured for the terminal. However, among the N reference signal resource sets, there are at least two different reference signal resource sets, the TRP identifiers corresponding to the at least two reference signal resource sets are different, and the physical cell identifiers corresponding to the at least two reference signal resource sets are the same. Signal In one example, the network device transmits first configuration information to the terminal, and the first configuration information is used to configure the N reference signal resource sets.

[0119] In one example, the network device transmits second configuration information to the terminal, and the second configuration information is used to configure the first partial reference signal resource sets among the N reference signal resource sets.

[0120]

[0121]

[0122] In summary, the method provided by this embodiment configures at least two reference signal resource sets for the terminal, so that the TRP identifiers corresponding to the at least two reference signal resource sets are different and the physical cell identifiers are the same. Therefore, when a beam failure occurs in any one of the multiple TRPs of the same serving cell, the terminal can accurately determine the beam failure event of the TRP, and further accurately notify the base station of the beam failure determination, thereby avoiding waste of communication resources.​FIG. 9 is a block diagram of a beam failure determination apparatus provided according to an embodiment of the present application. This apparatus can be implemented as a terminal or as a part of a terminal. The apparatus includes an N reference signal resource set for beam failure detection and a determination module 920 for determining a transmission and reception point (TRP) identifier corresponding to each of the reference signal resource sets, where there are at least two different reference signal resource sets among the N reference signal resource sets, the TRP identifiers corresponding to the at least two reference signal resource sets are different, and the physical cell identifiers corresponding to the at least two reference signal resource sets are the same.

[0123] In one alternative implementation of the present application, the TRP identifier includes a control resource set index identifier, the control resource set index identifier corresponding one-to-one to the TRP, or the TRP identifier includes a reference signal resource set index or a reference signal resource index, the reference signal resource set index corresponding one-to-one to the TRP, or the reference signal resource index corresponding one-to-one to the TRP or the TRP identifier includes a TRP number.

[0124] In one alternative implementation of the present application, the physical cell identifier includes the physical cell identifier of the serving cell and / or adjacent cells of the terminal.

[0125] In one alternative implementation of the present application, the determining module 920 receives first configuration information from a network device, the first configuration information is used to configure the N reference signal resource sets, or the determining module 920 determines the default N reference signal resource sets, or the determining module 920 receives second configuration information from the network device, the second configuration information is used to configure a reference signal resource set of a first portion of the N reference signal resource sets, determines a default reference signal resource set of a second portion, and the reference signal resource set of the second portion is the remaining set other than the reference signal resource set of the first portion of the N reference signal resource sets.

[0126] In one alternative implementation of the present application, for each of the N TRPs, the default reference signal resource set is a reference signal resource set corresponding to a target TCI state, and the target TCI state is the TCI state when monitoring PDCCH in a control resource set corresponding to the TRP configured for the terminal.

[0127] In one alternative implementation of the present application, when a reference signal in a first reference signal resource set among the at least two reference signal resource sets satisfies a beam failure condition, the determining module 920 determines that a beam failure has occurred in a first TRP corresponding to the first reference signal resource set.

[0128] In one alternative implementation of the present application, when a beam failure occurs in the first TRP, the apparatus further includes a transmitting module 940 for transmitting a beam failure recovery request to a network device.

[0129] In one alternative implementation of the present application, when a beam failure occurs at the first TRP, the transmission module 940 further transmits a first random access preamble on a first random access time-frequency resource, and the first random access preamble is used to indicate a beam failure recovery request.

[0130] In one alternative implementation of the present application, when a beam failure occurs at the first TRP and the first TRP is the TRP of the PCell, the transmission module 940 further transmits the first random access preamble on the first random access time-frequency resource, or when a beam failure occurs at the first TRP and the first TRP is the TRP of the PSCell, the transmission module 940 transmits the first random access preamble on the first random access time-frequency resource.

[0131] In one alternative implementation of the present application, when a beam failure occurs at the first TRP and the first TRP is the TRP where the CORESET #0 of the terminal in the PCell is configured, the transmission module 940 further transmits the first random access preamble on the first random access time-frequency resource, or when a beam failure occurs at the first TRP and the first TRP is the TRP where the CORESET #0 of the terminal in the PSCell is configured, the transmission module 940 transmits the first random access preamble on the first random access time-frequency resource.

[0132] In one alternative implementation of the present application, the first random access time-frequency resource is the It is a random access time-frequency resource corresponding to the first SSB transmitted by the first TRP. The first SSB is a reference signal resource corresponding to the TCI state of at least one CORESET corresponding to the control resource set index identifier corresponding to the first TRP, or the first SSB corresponds to a first CSI-RS, and the first CSI-RS is a reference signal resource corresponding to the TCI state of at least one CORESET corresponding to the control resource set index identifier corresponding to the first TRP.

[0133] In one alternative implementation of the present application, the first random access time-frequency resource is a random access time-frequency resource corresponding to a second SSB, and the second SSB is an SSB transmitted by a TRP in which CORESET#0 is configured.

[0134] In one alternative implementation of the present application, the first random access time-frequency resource is a random access time-frequency resource corresponding to an SSB corresponding to a target candidate beam, and the radio link quality of the reference signal corresponding to the target candidate beam is greater than a threshold, and the reference signal is a reference signal in a second reference signal resource set for discovering candidate beams.

[0135] In one alternative implementation of the present application, the SSB corresponding to the target candidate beam is an SSB transmitted by the first TRP or the second TRP.

[0136] In one alternative implementation of the present application, the transmission module 940 further transmits identification information in the PUSCH of message A in the two-step random access process, and the identification information is used to indicate the first TRP, or transmits the identification information in the PUSCH of message 3 in the four-step random access process.

[0137] In one alternative implementation of the present application, when a beam failure occurs at the first TRP, the transmission module 940 further transmits an SR-BFR to the network device via PUCCH, and the SR-BFR is an SR for beam failure recovery.

[0138] In one alternative implementation of the present application, the PUCCH is a PUCCH of a primary cell group, or the PUCCH is a PUCCH of a secondary cell group, or the PUCCH is a PUCCH of an adjacent cell, or the PUCCH is a PUCCH transmitted by a third TRP that belongs to the same cell as the first TRP and where no beam failure has occurred, or the PUCCH is a PUCCH of a serving cell to which a non-first TRP that has not experienced a beam failure belongs.

[0139] In one alternative implementation of the present application, the first TRP is a TRP of a Scell, and the PUCCH is a PUCCH of a primary cell group, or the PUCCH is a PUCCH of a secondary cell group, or the PUCCH is a PUCCH transmitted by a fourth TRP in the Scell to which the first TRP belongs and where no beam failure has occurred, or the PUCCH is a PUCCH of a serving cell other than the Scell to which the first TRP belongs.

[0140] In one alternative implementation of the present application, the first TRP is a TRP of a PCell or a PScell, and the PUCCH is a PUCCH of a primary cell group, or the PUCCH is a PUCCH of a secondary cell group, or the PUCCH is a PUCCH transmitted by a fifth TRP in the PCell or PScell to which the first TRP belongs and where no beam failure has occurred, or the PUCCH is a PUCCH of a serving cell other than the PCell or PScell to which the first TRP belongs. 。

[0141] In one alternative implementation of the present application, the first TRP is a TRP in which CORESET#0 of the terminal in the PCell or PScell is not configured. The PUCCH is the PUCCH of the primary cell group, or the PUCCH is the PUCCH of the secondary cell group, or the PUCCH is the PUCCH transmitted by a sixth TRP in which no beam failure has occurred in the PCell or PScell to which the first TRP belongs, the sixth TRP including a TRP in which CORESET#0 of the terminal is configured or a TRP in which CORESET#0 of the terminal is not configured, or the PUCCH is the PUCCH of another serving cell other than the PCell or PScell to which the first TRP belongs.

[0142] In one alternative implementation of the present application, the first TRP is a TRP in which CORESET#0 of the terminal in the PCell or PScell is configured. The PUCCH is the PUCCH of the primary cell group, or the PUCCH is the PUCCH of the secondary cell group, or the PUCCH is the PUCCH transmitted by a seventh TRP in which no beam failure has occurred in the PCell or PScell to which the first TRP belongs, the seventh TRP including a TRP in which CORESET#0 of the terminal is not configured, or the PUCCH is the PUCCH of another serving cell other than the PCell or PScell to which the first TRP belongs.

[0143] In one alternative implementation of the present application, the first TRP is a TRP of an adjacent cell, the PUCCH is the PUCCH of the primary cell group, or the PUCCH is the PUCCH of the secondary cell group, or the PUCCH is the PUCCH of the adjacent cell.

[0144] In one alternative implementation of the present application, the apparatus further includes a receiving module 960 for receiving resource configuration information of the network device, where the resource configuration information is used to allocate PUSCH resources, and a transmitting module 940 for transmitting identification information on the PUSCH resources, where the identification information is used to indicate the first TRP.

[0145] In one alternative implementation of the present application, the resource configuration information is included in a UL grant, and the UL grant is sent back by a network device based on the SR-BFR.

[0146] In one alternative implementation of the present application, the transmitting module 940 transmits a MAC CE on the PUSCH resources, and the MAC CE includes identification information for indicating the first TRP.

[0147] In one alternative implementation of the present application, the identification information includes at least one of a control resource set index identifier corresponding to the first TRP, a reference signal resource set index or a reference signal resource index corresponding to the first TRP, an identifier of the first TRP, and a cell identifier of the first TRP.

[0148] In one alternative implementation of the present application, the transmitting module 940 further transmits a reference signal identifier of a target candidate beam on the PUSCH resources, where the radio link quality of the reference signal corresponding to the target candidate beam is greater than a threshold, and the reference signal is a reference signal in a second reference signal resource set for discovering candidate beams.

[0149] FIG. 10 is a block diagram of a beam failure determination apparatus provided by an embodiment of the present application. This apparatus can be implemented as a network device or as part of a network device. The apparatus includes a configuration module 102 for transmitting configuration information. being 0, the configuration information includes at least one reference signal resource set among N reference signal resource sets for configuration beam failure detection, and each reference signal resource set among the at least one reference Signal resource set, and a configuration module 1020 for configuring the terminal with a transmit-receive point (TRP) identifier corresponding to each reference signal resource set among the at least one reference signal resource set. Among the N reference signal resource sets, there are at least two different reference signal resource sets, the TRP identifiers corresponding to the at least two reference signal resource sets are different, and the physical cell identifiers corresponding to the at least two reference signal resource sets are the same.

[0150] In one alternative implementation of the present application, the configuration module 1020 transmits first configuration information, and the first configuration information is used to configure the N reference signal resource sets, or the configuration module 1020 transmits second configuration information, and the second configuration information is used to configure a first partial reference signal resource set among the N reference signal resource sets.

[0151] In one alternative implementation of the present application, the apparatus is a receiving module 1040 for receiving a beam failure recovery request transmitted from the terminal, and the beam failure recovery request further includes the receiving module 1040 transmitted by the terminal when a beam failure occurs at a first TRP.

[0152] In one alternative implementation of the present application, the receiving module 1040 receives a first random access preamble on a first random access time-frequency resource, and the first random access preamble is used to indicate a beam failure recovery request.

[0153] In one alternative implementation of the present application, the apparatus further includes a determination module 1060 for determining that a beam failure has occurred at the first TRP based on a first SSB corresponding to the first random access time frequency resource, where the first SSB is a reference signal resource corresponding to the TCI state of at least one CORESET corresponding to a control resource set index identifier corresponding to the first TRP, or the first SSB corresponds to a first CSI-RS, and the first CSI-RS is a reference signal resource corresponding to the TCI state of at least one CORESET corresponding to a control resource set index identifier corresponding to the first TRP.

[0154] In one alternative implementation of the present application, the receiving module 1040 receives identification information on a PUSCH of a message A in a two-step random access process, and determines that a beam failure has occurred at the first TRP based on the identification information, or the receiving module 1040 receives the identification information on a PUSCH of a message 3 in a four-step random access process, and determines that a beam failure has occurred at the first TRP based on the identification information.

[0155] In one alternative implementation of the present application, the receiving module 1040 receives an SR-BFR transmitted on a PUCCH, and the SR-BFR is an SR for beam failure recovery.

[0156] In one alternative implementation of the present application, the PUCCH is a PUCCH of a primary cell group, or the PUCCH is a PUCCH of a secondary cell group, or the PUCCH is a PUCCH of an adjacent cell, or the PUCCH is a PUCCH transmitted by a third TRP belonging to the same cell as the first TRP and where no beam failure has occurred, or the PUCCH is a PUCCH of a serving cell to which a non-first TRP where no beam failure has occurred belongs.

[0157] In one alternative implementation of the present application, the first TRP is the TRP of the Scell, the PUCCH is the PUCCH of the primary cell group, or the PUCCH is the PUCCH of the secondary cell group, or the PUCCH is the PUCCH transmitted by a fourth TRP in which no beam failure has occurred in the Scell to which the first TRP belongs, or the PUCCH is the PUCCH of another serving cell other than the Scell to which the first TRP belongs.

[0158] In one alternative implementation of the present application, the first TRP is the TRP of the PCell or the PScell, the PUCCH is the PUCCH of the primary cell group, or the PUCCH is the PUCCH of the secondary cell group, or the PUCCH is the PUCCH transmitted by a fifth TRP in which no beam failure has occurred in the PCell or the PScell to which the first TRP belongs, or the PUCCH is the PUCCH of another serving cell other than the PCell or the PScell to which the first TRP belongs.

[0159] In one alternative implementation of the present application, the first TRP is a TRP in which CORESET#0 of the terminal in the PCell or the PScell is not configured. The PUCCH is the PUCCH of the primary cell group, or the PUCCH is the PUCCH of the secondary cell group, or the PUCCH is the PUCCH transmitted by a sixth TRP in which no beam failure has occurred in the PCell or the PScell to which the first TRP belongs, the sixth TRP including a TRP in which CORESET#0 of the terminal is configured or a TRP in which CORESET#0 of the terminal is not configured, or the PUCCH is the PUCCH of another serving cell other than the PCell or the PScell to which the first TRP belongs.

[0160] In one alternative implementation of the present application, the first TRP is the TRP in which the CORESET#0 of the terminal in the PCell or PScell is configured. The PUCCH is the PUCCH of the primary cell group, or the PUCCH is the PUCCH of the secondary cell group, or the PUCCH is the PUCCH transmitted by the seventh TRP in which no beam failure has occurred in the PCell or PScell to which the first TRP belongs, the seventh TRP including the TRP in which the CORESET#0 of the terminal is not configured, or the PUCCH is the PUCCH of another serving cell other than the PCell or PScell to which the first TRP belongs.

[0161] In one alternative implementation of the present application, the first TRP is the TRP of an adjacent cell, the PUCCH is the PUCCH of the primary cell group, or the PUCCH is the PUCCH of the secondary cell group, or the PUCCH is the PUCCH of the adjacent cell.

[0162] In one alternative implementation of the present application, the configuration module 1020 transmits resource configuration information to the terminal, the resource configuration information is used to allocate PUSCH resources, the receiving module 1040 receives identification information on the PUSCH resources, and the determination module 1060 determines, based on the identification information, that a beam failure has occurred in the first TRP.

[0163] In one alternative implementation of the present application, the resource configuration information is included in a UL grant, and the UL grant is returned by the network device based on the SR-BFR.

[0164] In one alternative implementation of the present application, the receiving module 1040 receives a MAC CE on the PUSCH resource, and the identification information is included in the MAC CE.

[0165] In one alternative implementation of the present application, the identification information includes a control resource set index identifier corresponding to the first TRP, a reference signal resource set index or a reference signal resource index corresponding to the first TRP, an identifier of the first TRP, and at least one of a cell identifier of the first TRP.

[0166] FIG. 11 is a schematic configuration diagram of a terminal provided by an exemplary embodiment of the present application. The terminal includes a processor 1101, a receiver 1102, a transmitter 1103, a memory 1104, and a bus 1105.

[0167] The processor 1101 includes one or more processing cores. By executing software programs and modules, the processor 1101 performs various functional applications and information processing.

[0168] The receiver 1102 and the transmitter 1103 can be implemented as one communication component, and the communication component may be a communication chip.

[0169] The memory 1104 is connected to the processor 1101 via the bus 1105.

[0170] The memory 1104 stores at least one instruction, and the processor 1101 executes the at least one instruction to implement various steps of the method embodiments described above.

[0171] In addition, the memory 1104 may be implemented by any type of volatile or non-volatile storage device or a combination thereof. The volatile or non-volatile storage device includes, but is not limited to, a magnetic disk or an optical disk, an electrically erasable programmable read-only memory (EEPROM), an erasable programmable read-only memory (EPROM), a static random access memory (SRAM), a read-only memory (ROM), a magnetic memory, a flash memory, and a programmable read-only memory (PROM).

[0172] In an exemplary embodiment, there is further provided a computer-readable storage medium storing at least one instruction, at least one program, a code set or an instruction set, and the at least one instruction, the one program, the code set or the instruction set is loaded and executed by the processor to implement a beam failure determination method executed by a terminal provided by the embodiments of the above methods.

[0173] FIG. 12 shows a schematic configuration diagram of a network device provided by an exemplary embodiment of the present application. The network device includes a processor 1201, a receiver 1202, a transmitter 1203, a memory 1204, and a bus 1205.

[0174] The processor 1201 includes one or more processing cores, and the processor 1201 executes various functional applications and information processing by executing software programs and modules.

[0175] The receiver 1202 and the transmitter 1203 can be realized as one communication component, and the communication component may be a communication chip.

[0176] The memory 1204 is connected to the processor 1201 via the bus 1205.

[0177] The memory 1204 stores at least one instruction, and the processor 1201 executes the at least one instruction to implement various steps of the embodiments of the above methods.

[0178] Also, the memory 1204 may be implemented by any type of volatile or non-volatile storage device or a combination thereof, and the volatile or non-volatile storage device includes, but is not limited to, a magnetic disk or an optical disk, an electrically erasable programmable read-only memory (EEPROM), an erasable programmable read-only memory (EPROM), a static random access memory (SRAM), a read-only memory (ROM), a magnetic memory, a flash memory, and a programmable read-only memory (PROM).

[0179] In an exemplary embodiment, there is further provided a computer-readable storage medium storing at least one instruction, at least one program, a code set or an instruction set, and the at least one instruction, the one program, the code set or the instruction set is loaded and executed by the processor to implement the beam failure determination method provided by the embodiments of the above methods.

[0180] Those skilled in the art will understand that all or some of the steps of the above embodiments may be executed by hardware or may be realized by instructing the relevant hardware by a program, and the program may be stored in a computer-readable storage medium such as a read-only memory, a magnetic disk or an optical disk.

[0181] The above are only alternative embodiments of the present application and do not limit the present application. Modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall all be included within the protection scope of the present disclosure.

Claims

1. A beam failure determination method applied to a terminal, comprising: determining a default N reference signal resource sets for beam failure detection and a transceiver point (TRP) identifier corresponding to each of the reference signal resource sets, wherein at least two different reference signal resource sets exist in the N reference signal resource sets, the TRP identifiers corresponding to the at least two reference signal resource sets are different, and the physical cell identifiers corresponding to the at least two reference signal resource sets are the same; when a reference signal in a first reference signal resource set among the at least two reference signal resource sets meets a beam failure condition, determining that a beam failure has occurred at a first TRP corresponding to the first reference signal resource set; when a beam failure occurs at the first TRP, transmitting an SR-BFR to a network device via a physical uplink control channel (PUCCH), where the SR-BFR is a scheduling request (SR) for a beam failure recovery request; the method further comprises: receiving resource configuration information of the network device, where the resource configuration information is used to allocate physical uplink shared channel (PUSCH) resources; and transmitting identification information via the PUSCH resources, where the identification information is used to indicate the first TRP. A beam failure determination method, characterized by the above.

2. The TRP identifier includes a control resource set index identifier, and the control resource set index identifier corresponds to the TRP one-to-one; or the TRP identifier includes a reference signal resource set index or a reference signal resource index, and the reference signal resource set index corresponds to the TRP one-to-one, or the reference signal resource index corresponds to the TRP one-to-one; or the TRP identifier includes a TRP number. The beam failure determination method according to Claim 1, characterized by the above.

3. The physical cell identifier includes the physical cell identifier of the serving cell and / or adjacent cells of the terminal. The beam failure determination method according to Claim 2, characterized by the above.

4. For each of the N TRPs, the default reference signal resource set is a reference signal resource set corresponding to a target transmission configuration indication (TCI) state, and the target TCI state is the TCI state when monitoring the PDCCH in the control resource set corresponding to the TRP configured for the terminal. The beam failure determination method according to claim 1, characterized in that.

5. When a beam failure occurs in the first TRP, the step of transmitting a beam failure recovery request to the network device is When a beam failure occurs in the first TRP, the step of transmitting a first random access preamble on a first random access time-frequency resource, wherein the first random access preamble is used to indicate a beam failure recovery request. The beam failure determination method according to claim 1, characterized in that.

6. When a beam failure occurs in the first TRP, the step of transmitting a first random access preamble on a first random access time-frequency resource is When a beam failure occurs in the first TRP and the first TRP is the TRP of the primary cell (PCell), the step of transmitting the first random access preamble on the first random access time-frequency resource, Or, When a beam failure occurs in the first TRP and the first TRP is the TRP of the primary secondary cell (PScell), the step of transmitting the first random access preamble on the first random access time-frequency resource, including. The beam failure determination method according to claim 5, characterized in that.

7. When a beam failure occurs in the first TRP, the step of transmitting a first random access preamble on a first random access time-frequency resource is When a beam failure occurs in the first TRP and the first TRP is the TRP in which CORESET #0 of the terminal in the primary cell (PCell) is configured, the step of transmitting the first random access preamble on the first random access time-frequency resource, Or, When a beam failure occurs in the first TRP, and the first TRP is a TRP in which the terminal's CORESET#0 in the primary secondary cell (PScell) is configured, the step of transmitting the first random access preamble on the first random access time-frequency resource, including The beam failure determination method according to claim 5, characterized in that

8. The first random access time-frequency resource is a random access time-frequency resource corresponding to a first synchronization signal block (SSB) transmitted by the first TRP. The beam failure determination method according to claim 6, characterized in that

9. The first SSB is a reference signal resource corresponding to the TCI state of at least one CORESET corresponding to the control resource set index identifier corresponding to the first TRP, Or, The first SSB corresponds to a first channel state information reference signal (CSI-RS), and the first CSI-RS is a reference signal resource corresponding to the transmission configuration indication (TCI) state of at least one control resource set (CORESET) corresponding to the control resource set index identifier corresponding to the first TRP. The beam failure determination method according to claim 8, characterized in that

10. The first random access time-frequency resource is a random access time-frequency resource corresponding to a second SSB, and the second SSB is an SSB transmitted by a TRP in which the terminal's CORESET#0 is configured. The beam failure determination method according to claim 6, characterized in that

11. The first random access time-frequency resource is a random access time-frequency resource corresponding to an SSB corresponding to a target candidate beam, The radio link quality of the reference signal corresponding to the target candidate beam is greater than a threshold, and the reference signal is a reference signal in a second reference signal resource set for discovering candidate beams. The beam failure determination method according to claim 6, characterized in that

12. The SSB corresponding to the target candidate beam is an SSB transmitted by the first TRP or the second TRP. The beam failure determination method according to claim 11, characterized in that

13. A step of transmitting the identification information on a physical uplink shared channel (PUSCH) of a message A in a two-step random access process, wherein the identification information is used to indicate the first TRP. Or, A step of transmitting the identification information on the PUSCH of a message 3 in a four-step random access process, further comprising. The beam failure determination method according to claim 10, characterized in that.

14. The PUCCH is a PUCCH of a primary cell group, Or, The PUCCH is a PUCCH of a secondary cell group, Or, The PUCCH is a PUCCH of an adjacent cell, Or, The PUCCH is a PUCCH transmitted by a third TRP that belongs to the same cell as the first TRP and where no beam failure has occurred. Or, The PUCCH is a PUCCH of a serving cell to which a TRP other than the first TRP belongs among the TRPs where no beam failure has occurred. The beam failure determination method according to claim 1, characterized in that.

15. The first TRP is a TRP of a secondary cell (Scell), The PUCCH is a PUCCH of a primary cell group, Or, The PUCCH is a PUCCH of a secondary cell group, Or, The PUCCH is a PUCCH transmitted by a fourth TRP that belongs to the Scell where the first TRP belongs and where no beam failure has occurred. Or, The PUCCH is a PUCCH of another serving cell other than the Scell where the first TRP belongs. The beam failure determination method according to claim 1, characterized in that.

16. The first TRP is a TRP of a primary cell (PCell) or a primary secondary cell (PScell), The PUCCH is a PUCCH of a primary cell group, Or, The PUCCH is a PUCCH of a secondary cell group, Or, The PUCCH is a PUCCH transmitted by a fifth TRP that belongs to the PCell or the PScell where the first TRP belongs and where no beam failure has occurred. Or, The PUCCH is a PUCCH of another serving cell other than the PCell or the PScell where the first TRP belongs. The beam failure determination method according to claim 1, characterized in that.

17. The first TRP is a TRP in which CORESET#0 of the terminal in a primary cell (PCell) or a primary-secondary cell (PScell) is not configured, The PUCCH is a PUCCH of a primary cell group, or, The PUCCH is a PUCCH of a secondary cell group, or, The PUCCH is a PUCCH transmitted by a sixth TRP in which beam failure has not occurred in the PCell or the PScell to which the first TRP belongs, and the sixth TRP includes a TRP in which CORESET#0 of the terminal is configured or a TRP in which CORESET#0 of the terminal is not configured, The beam failure determination method according to claim 1, characterized in that.

18. The first TRP is a TRP in which CORESET#0 of the terminal in a primary cell (PCell) or a primary-secondary cell (PScell) is configured, The PUCCH is a PUCCH of a primary cell group, or, The PUCCH is a PUCCH of a secondary cell group, or, The PUCCH is a PUCCH transmitted by a seventh TRP in which beam failure has not occurred in the PCell or the PScell to which the first TRP belongs, and the seventh TRP includes a TRP in which CORESET#0 of the terminal is not configured, The beam failure determination method according to claim 1, characterized in that.

19. The first TRP is a TRP of an adjacent cell, The PUCCH is a PUCCH of a primary cell group, or, The PUCCH is a PUCCH of a secondary cell group, or, The PUCCH is a PUCCH of an adjacent cell, The beam failure determination method according to claim 1, characterized in that.

20. The resource configuration information is included in an uplink grant (UL grant), and the UL grant is returned by the network device based on the SR-BFR, The beam failure determination method according to claim 1, characterized in that.

21. The step of transmitting the identification information on the PUSCH resource, wherein the identification information is used to indicate the first TRP is, A step of transmitting a Media Access Control Control Element (MAC CE) on the PUSCH resource, the step including including the identification information for indicating the first TRP in the MAC CE. The beam failure determination method according to claim 1, characterized in that.

22. The identification information is A control resource set index identifier corresponding to the first TRP, A reference signal resource set index or a reference signal index corresponding to the first TRP, An identifier of the first TRP, At least one of a cell identifier of the first TRP. The beam failure determination method according to claim 1, characterized in that.

23. A step of transmitting a reference signal identifier of a target candidate beam on a PUSCH resource, the step further including that a radio link quality of a reference signal corresponding to the target candidate beam is greater than a threshold, and the reference signal is a reference signal in a second reference signal resource set for discovering candidate beams. The beam failure determination method according to claim 1, characterized in that.

24. A beam failure determination method applied to a network device, A step of transmitting second configuration information, the second configuration information including configuring, for a terminal, a first partial reference signal resource set of N reference signal resource sets for beam failure detection, and a transmission and reception point (TRP) identifier corresponding to each reference signal resource set in the first partial reference signal resource sets. Among the N reference signal resource sets, there are at least two different reference signal resource sets, TRP identifiers corresponding to the at least two reference signal resource sets are different, and physical cell identifiers corresponding to the at least two reference signal resource sets are the same. The method is A step of receiving a beam failure recovery request transmitted from the terminal, the beam failure recovery request further including a step of being transmitted by the terminal when a beam failure occurs on a first TRP. The step of receiving a beam failure recovery request transmitted from the terminal is A step of receiving an SR-BFR transmitted on a Physical Uplink Control Channel (PUCCH), the SR-BFR including an SR for a beam failure recovery request. The method is A step of transmitting resource configuration information to a terminal, wherein the resource configuration information is used to allocate a physical uplink shared channel (PUSCH) resource, A step of receiving identification information on the PUSCH resource, wherein the identification information is used to indicate the first TRP, And a step of determining that a beam failure has occurred at the first TRP based on the identification information. A beam failure determination method characterized by the above.

25. The step of receiving a beam failure recovery request transmitted from the terminal is A step of receiving a first random access preamble on a first random access time-frequency resource, wherein the first random access preamble is used to indicate a beam failure recovery request. The beam failure determination method according to claim 24, characterized by the above.

26. The method further includes a step of determining that a beam failure has occurred at the first TRP based on a first synchronization signal block (SSB) corresponding to the first random access time-frequency resource, The first SSB is a reference signal resource corresponding to a transmission configuration indication (TCI) state of at least one control resource set (CORESET) corresponding to a control resource set index identifier corresponding to the first TRP, or the first SSB corresponds to a first channel state information reference signal (CSI-RS), and the first CSI-RS is a reference signal resource corresponding to a TCI state of at least one CORESET corresponding to a control resource set index identifier corresponding to the first TRP. The beam failure determination method according to claim 25, characterized by the above.

27. A step of receiving the identification information on a physical uplink shared channel (PUSCH) of a message A in a two-step random access process, and determining that a beam failure has occurred at the first TRP based on the identification information, Or A step of receiving the identification information on a PUSCH of a message 3 in a four-step random access process and determining that a beam failure has occurred at the first TRP based on the identification information. The beam failure determination method according to claim 25, characterized by the above.

28. The PUCCH is a PUCCH of a primary cell group. Or, the PUCCH is a PUCCH of a secondary cell group, Or, the PUCCH is a PUCCH of an adjacent cell, Or, the PUCCH is a PUCCH transmitted by a third TRP that belongs to the same cell as the first TRP and where beam failure has not occurred, Or, the PUCCH is a PUCCH of a serving cell to which a TRP other than the first TRP belongs among TRPs where beam failure has not occurred, The beam failure determination method according to claim 24, characterized by the above.

29. The first TRP is a TRP of a secondary cell (Scell), the PUCCH is a PUCCH of a primary cell group, Or, the PUCCH is a PUCCH of a secondary cell group, Or, the PUCCH is a PUCCH transmitted by a fourth TRP where beam failure has not occurred in the Scell to which the first TRP belongs, Or, the PUCCH is a PUCCH of another serving cell other than the Scell to which the first TRP belongs, The beam failure determination method according to claim 24, characterized by the above.

30. The first TRP is a TRP of a primary cell (PCell) or a primary secondary cell (PScell), the PUCCH is a PUCCH of a primary cell group, Or, the PUCCH is a PUCCH of a secondary cell group, Or, the PUCCH is a PUCCH transmitted by a fifth TRP where beam failure has not occurred in the PCell or the PScell to which the first TRP belongs, Or, the PUCCH is a PUCCH of another serving cell other than the PCell or the PScell to which the first TRP belongs, The beam failure determination method according to claim 24, characterized by the above.

31. The first TRP is a TRP in which CORESET #0 of the terminal in a primary cell (PCell) or a primary secondary cell (PScell) is not configured, the PUCCH is a PUCCH of a primary cell group, Or, the PUCCH is a PUCCH of a secondary cell group, Or, The PUCCH is a PUCCH transmitted by a sixth TRP in which beam failure has not occurred in the PCell or the PSCell to which the first TRP belongs, and the sixth TRP includes a TRP in which the terminal's CORESET#0 is configured or a TRP in which the terminal's CORESET#0 is not configured. The beam failure determination method according to claim 24, characterized in that.

32. The first TRP is a TRP in which the terminal's CORESET#0 is configured in a primary cell (PCell) or a primary secondary cell (PSCell). The PUCCH is a PUCCH of a primary cell group. Or, The PUCCH is a PUCCH of a secondary cell group. Or, The PUCCH is a PUCCH transmitted by a seventh TRP in which beam failure has not occurred in the PCell or the PSCell to which the first TRP belongs, and the seventh TRP includes a TRP in which the terminal's CORESET#0 is not configured. The beam failure determination method according to claim 24, characterized in that.

33. The first TRP is a TRP of an adjacent cell. The PUCCH is a PUCCH of a primary cell group. Or, The PUCCH is a PUCCH of a secondary cell group. Or, The PUCCH is a PUCCH of an adjacent cell. The beam failure determination method according to claim 24, characterized in that.

34. The resource configuration information is included in an uplink grant (UL grant), and the UL grant is returned by the network device based on the SR-BFR. The beam failure determination method according to claim 24, characterized in that.

35. The step of receiving the identification information with the PUSCH resource is The step of receiving a media access control unit (MAC CE) with the PUSCH resource, the step including that the identification information is included in the MAC CE. The beam failure determination method according to claim 34, characterized in that.

36. The identification information is A control resource set index identifier corresponding to the first TRP, A reference signal resource set index or a reference signal resource index corresponding to the first TRP, An identifier of the first TRP, Including at least one of a cell identifier of the first TRP. The beam failure determination method according to claim 27, characterized in that...

37. A beam failure determination device, comprising: a default N reference signal resource sets for beam failure detection, and a determination module for determining a transceiver point (TRP) identifier corresponding to each of the reference signal resource sets; at least two different reference signal resource sets exist in the N reference signal resource sets, the TRP identifiers corresponding to the at least two reference signal resource sets are different, and the physical cell identifiers corresponding to the at least two reference signal resource sets are the same; when a reference signal in a first reference signal resource set among the at least two reference signal resource sets satisfies a beam failure condition, it is determined that a beam failure has occurred at a first TRP corresponding to the first reference signal resource set; when a beam failure occurs at the first TRP, an SR-BFR is transmitted to a network device via a physical uplink control channel (PUCCH), and the SR-BFR is a scheduling request (SR) for a beam failure recovery request; The device further comprises: a receiving module for receiving resource configuration information of the network device, where the resource configuration information is used for allocating physical uplink shared channel (PUSCH) resources; a transmitting module for transmitting identification information via the PUSCH resources, where the identification information is used to indicate the first TRP. A beam failure determination device, characterized in that...

38. A beam failure determination device, comprising: a configuration module for transmitting second configuration information, where the second configuration information includes a first part of the N reference signal resource sets for beam failure detection and a transceiver point (TRP) identifier corresponding to each reference signal resource set in the first part of the reference signal resource sets, and the configuration module configures the terminal; at least two different reference signal resource sets exist in the N reference signal resource sets, the TRP identifiers corresponding to the at least two reference signal resource sets are different, and the physical cell identifiers corresponding to the at least two reference signal resource sets are the same; The device further comprises: A receiving module that receives a beam failure recovery request transmitted from the terminal, the beam failure recovery request further including a receiving module transmitted by the terminal when a beam failure occurs at a first TRP The receiving module is further used to receive an SR-BFR transmitted on a Physical Uplink Control Channel (PUCCH), and the SR-BFR is an SR for a beam failure recovery request The configuration module transmits resource configuration information to the terminal, and the resource configuration information is used to allocate Physical Uplink Shared Channel (PUSCH) resources The receiving module receives identification information on the PUSCH resource, determines that a beam failure has occurred at the first TRP based on the identification information, and the identification information is used to indicate the first TRP A beam failure determination device characterized by the above

39. A terminal comprising: A processor; A transceiver connected to the processor; A memory for storing executable instructions of the processor, The processor is configured to load and execute the executable instructions to implement the beam failure determination method according to any one of Claims 1 to 23 A terminal characterized by the above

40. A network device comprising: A processor; A transceiver connected to the processor; A memory for storing executable instructions of the processor, The processor is configured to load and execute the executable instructions to implement the beam failure determination method according to any one of Claims 24 to 36 A network device characterized by the above

41. A computer-readable storage medium storing executable instructions, The executable instructions are loaded and executed by a processor to implement the beam failure determination method according to any one of Claims 1 to 23 A computer-readable storage medium characterized by the above

42. A computer-readable storage medium storing executable instructions, The executable instructions are loaded and executed by a processor to implement the beam failure determination method according to any one of Claims 24 to 36 A computer-readable storage medium characterized by the above

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