WO2020192566A1 - Procédé de reprise sur défaillance de faisceau et appareil de communication - Google Patents

Procédé de reprise sur défaillance de faisceau et appareil de communication Download PDF

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Publication number
WO2020192566A1
WO2020192566A1 PCT/CN2020/080328 CN2020080328W WO2020192566A1 WO 2020192566 A1 WO2020192566 A1 WO 2020192566A1 CN 2020080328 W CN2020080328 W CN 2020080328W WO 2020192566 A1 WO2020192566 A1 WO 2020192566A1
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WIPO (PCT)
Prior art keywords
multiple cells
terminal device
cell
beam failure
failure recovery
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PCT/CN2020/080328
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English (en)
Chinese (zh)
Inventor
管鹏
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华为技术有限公司
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Publication of WO2020192566A1 publication Critical patent/WO2020192566A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/382—Monitoring; Testing of propagation channels for resource allocation, admission control or handover
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24—Cell structures
    • H04W16/28—Cell structures using beam steering
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/04—Arrangements for maintaining operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/046—Wireless resource allocation based on the type of the allocated resource the resource being in the space domain, e.g. beams

Definitions

  • the present application relates to the field of communication, and more specifically, to a beam failure recovery method and communication device.
  • BFR beam failure recovery
  • the current technology specifies the beam failure recovery process of the primary cell (primary cell, PCell), but does not involve the beam failure recovery process of the secondary cell (secondary cell, SCell).
  • the present application provides a beam failure recovery method, which can prevent each cell from performing a beam failure recovery process separately, and can achieve the purpose of reducing overhead and time delay.
  • a beam failure recovery method includes: a terminal device detects that a beam failure occurs in at least one cell among a plurality of associated cells; the terminal device determines that a beam failure occurs in the plurality of cells; the terminal device determines at least one Available beams, the at least one available beam is used by the terminal device to communicate with the network device on the multiple cells.
  • the at least one available beam may be, for example, one available beam or multiple available beams.
  • the at least one available beam belongs to a set of candidate beams corresponding to one cell (denoted as: the first cell) of the multiple cells.
  • the terminal device detects that at least one cell of the multiple cells has a beam failure, it is considered that other cells associated with the at least one cell also have a beam failure.
  • the terminal device can determine at least one available beam, the at least one available beam is the new available beam of each cell in the multiple cells. Since the at least one available beam belongs to the set of candidate beams corresponding to the first cell, then if the If the beam failure recovery procedure is successful, the terminal device can communicate with the network device through the at least one available beam in each of the multiple cells.
  • the beam failure recovery method when beam failure occurs in at least one cell, it is considered that beam failure occurs in other cells associated with the cell, and if one of the associated cells fails to recover from beam failure, it is considered All other cells failed to recover from beam failure. Therefore, there is no need to perform a beam failure recovery process for each cell separately, which simplifies the beam failure recovery process of multiple cells, and can achieve the purpose of reducing overhead and time delay.
  • the at least one available beam may belong to a candidate beam set corresponding to two or more cells in the plurality of cells.
  • one beam may be selected as the available beam from the candidate beam sets corresponding to cell 1 and cell 2 respectively.
  • the multiple cells may all be SCells, or may include PCells.
  • the multiple cells correspond to one cell group; or, the multiple cells use the same beam, for example, the physical downlink control channel (PDCCH) beams of the multiple cells are the same.
  • the physical downlink control channel (PDCCH) beams of the multiple cells are the same.
  • the number of the at least one cell may be 1, that is, if the terminal device detects that a beam failure occurs in one of the multiple cells (for example, cell 1), it determines that the multiple cells all have a beam failure.
  • cell 1 may be the cell where beam failure occurs first among the multiple cells.
  • other cells in the multiple cells may also have beam failures at the same time. Therefore, in this application, if the terminal device detects that one of the multiple cells has a beam failure or at least one cell has a beam failure at the same time, it determines that the multiple cells have a beam failure.
  • the meaning of “simultaneous” here can be extended to “almost simultaneously”, in other words, the at least one cell has beam failures within a preset time period, or the time difference between the beam failures of the at least one cell that has beam failures does not exceed The preset duration.
  • the method may further include: the terminal device communicates with the network device through the at least one available beam on each of the multiple cells.
  • the method further includes: the terminal device uses the multiple cells to determine beam failures respectively. Reset or clear the counter of, and/or reset or clear the time windows corresponding to the multiple cells for determining beam failure.
  • the counter used to determine the beam failure is used to record the number of times that the physical layer of the terminal device reports a beam failure instance (beam failure instance).
  • the time window used to determine the beam failure is used by the terminal device to perform beam failure detection, that is, within the time window, the terminal device performs beam failure detection.
  • the terminal device determining at least one available beam includes: configuring a candidate beam set (denoted as: set q 1 ) in at least one of the multiple cells In the case of, the terminal device determines the at least one available beam.
  • the terminal device can autonomously determine the at least one available beam.
  • the terminal device may determine the at least one available beam according to the prior art.
  • the terminal device may determine the at least one available beam according to the set q 1 corresponding to the multiple cells. For example, in the case where the set q 1 of the multiple cells are configured differently, the terminal device may perform beam measurement on the reference signal corresponding to the set q 1 corresponding to each cell, and select the one with the best beam quality or meeting preset conditions. Or beams corresponding to multiple reference signals are used as the at least one available beam. That is, the at least one available beam is a beam that meets a preset condition or has the best beam quality among candidate beam sets corresponding to the multiple cells.
  • the terminal device can determine the beam with the best beam quality in each cell by performing beam measurement on the reference signal corresponding to the set q 1 corresponding to each cell, and then determine the beam with the best beam quality in each cell.
  • One or more beams are selected as the at least one available beam among beams.
  • the terminal device sends a beam failure recovery request to the network device according to the at least one available beam; the terminal device receives a beam failure recovery request for the beam failure recovery request Request a response, where the beam failure recovery request response is used to indicate that the beam failure recovery of the multiple cells is successful.
  • the terminal device receives the beam failure recovery request response for the first cell, it is considered that the beam failure recovery of the first cell is successful, and it is also considered that the beam failure recovery of other cells is also successful.
  • the beam failure recovery request includes at least one of the following information: an identity corresponding to the multiple cells, and an identity of one of the multiple cells , The beam identifier of the PDCCH corresponding to the multiple cells, or the identifier of the cell group corresponding to the multiple cells.
  • the method further includes: the terminal device uses the multiple cells to control beams respectively.
  • the time window for failure recovery is reset or cleared, and/or the counters used for controlling the number of beam failure recovery request retransmissions corresponding to the multiple cells are reset or cleared.
  • the counter used to control the number of beam failure recovery request retransmissions is used to record the number of times the terminal device sends the beam failure recovery request.
  • the time window used to control the beam failure recovery is used by the terminal device to receive the beam failure recovery request response, that is, within the time window, the terminal device receives the beam failure recovery request response.
  • the method further includes:
  • the terminal device receives the media access control control element (MAC CE) sent by the network device, and the MAC CE is used to add at least one target beam to the physical downlink control channel PDCCH, In the physical downlink share channel (PDSCH), physical uplink control channel (PUCCH) and/or physical uplink share channel (PUSCH) beam list, the at least one target beam Used for the terminal device to communicate with the network device on the multiple cells.
  • MAC CE media access control control element
  • the at least one target beam may be the at least one available beam.
  • the MAC CE may be for any one of the multiple cells.
  • the terminal device receives the above-mentioned MAC CE of the cell, it can be considered that the beam configuration performed by the MAC CE is for the multiple cells, that is, the terminal device believes that the multiple cells all use the target beam to send or receive PDCCH, PDSCH, PUCCH And/or PUSCH.
  • radio resource control (RRC) + MAC CE two-level configuration can be used to activate the target beam, and the method of this application introduces a new MAC CE without requiring RRC pre-configuration.
  • the purpose of activating the target beam is achieved, thereby reducing the frequency of RRC reconfiguration and further reducing signaling overhead.
  • the MAC CE may also be for cell grouping, and the specific format of the MAC CE is not limited in this application.
  • the method before the terminal device receives the MAC CE, the method further includes: the terminal device passes the transmission beam corresponding to the at least one available beam in the multiple cells Sending PUCCH; and/or, the terminal device receives PDCCH and/or PDSCH through the at least one available beam in the multiple cells.
  • the terminal device communicating with the network device through the at least one available beam on each cell of the multiple cells includes: the terminal device sends the PUCCH through the transmission beam corresponding to the at least one available beam in the multiple cells; And/or, the terminal device receives PDCCH and/or PDSCH through the at least one available beam in the multiple cells.
  • the terminal device transmits the PUCCH through the transmission beam corresponding to the at least one available beam on the multiple cells in the beam failure state; and/or, receives the PDCCH and/or PDSCH through the at least one available beam , Can avoid communication interruption caused by beam failure, and ensure the continuity of communication.
  • the beam failure state refers to the period of time before the beam failure recovery request response is received after the terminal device determines that it has a beam failure in a certain cell and sends a beam failure recovery request, that is, the beam has not recovered successfully. a period of time.
  • the method may further include:
  • the terminal device receives one (or a set of) or multiple BFR configurations sent by the network device, and the BFR configuration is used for the terminal device to perform beam failure recovery.
  • the network device may configure a set of BFR configurations for the multiple cells. For example, when the multiple cells are grouped into one cell, the network device may configure a set of BFR configuration for the terminal device, that is, the BFR configuration of each cell in a cell group is the same. For another example, the network device may configure a set of BFR configurations for cells that use the same beam (for example, the same PDCCH beam).
  • the network device configures a set of BFR configurations for each of the multiple cells.
  • the content included in the BFR configuration corresponding to one cell and the content included in the BFR configuration corresponding to the other cell may be partly or completely the same, or may be different.
  • the BFR configuration in this application may include one or more of the following (1) to (7), and the following is an explanation of each item.
  • Reference signal resource set used for beam failure detection (denoted as: set q 0 )
  • the reference signal corresponding to the set q 0 may be located on some or all of the multiple cells.
  • the reference signal corresponding to the set q 0 may be located on any one or more of the multiple cells.
  • the reference signal corresponding to the set q 0 of a certain cell can be located on this cell, or on other cells, or on this cell and other cells.
  • the set q 1 may also be referred to as a candidate beam set. Similar to the set q 1 , the reference signal corresponding to the set q 1 may be located on some or all of the multiple cells. Further, the reference signal corresponding to the set q 1 and the reference signal corresponding to the set q 0 may be located on the same cell. Of course, the two may also be located on different cells, which is not limited in this application.
  • a counter that is, denoted as: the first counter
  • time window denoted as: the first time window
  • the network device may configure a first counter and/or a first time window for each cell group, or may configure a first counter and/or a first time window for each cell.
  • the network device can configure a first counter and/or first time window for each cell, but this application does not limit the above configuration methods, and other reasonable configuration methods should also fall within the protection scope of this application .
  • the multiple cells use the same beam, such as a PDCCH beam, only one first counter and/or first time window may be configured, and the first counter and/or first time window may be shared by the multiple cells,
  • the configuration of the second counter and/or the second time window described below is similar.
  • the network device can configure one or more uplink resources for sending beam failure recovery requests. Further, if uplink resources for sending beam failure recovery requests are configured on multiple cells, the terminal device can select the uplink resource with the earlier time according to the position of the uplink resources on the at least two cells in the time domain. Send beam failure recovery request. In addition, the terminal device may select an uplink resource on a cell with a smaller or larger identity to send the beam failure recovery request according to the size of the identities of the at least two cells.
  • the uplink resource used to send the beam failure recovery request may be associated with the set q 1.
  • the other one of the two may be determined By.
  • the association relationship between the uplink resource and the set q 1 may be configured by a network device or specified by an agreement, which is not limited in this application. It can be understood that in the case where the terminal device knows the association relationship between the uplink resource and the set q 1 , the network device may only configure one of the uplink resource and the set q 1 .
  • a control resource set (CORESET) and/or search space set used to receive a response to a beam failure recovery request.
  • the network device can be configured with one or more search space sets and/or one or more CORESET. Further, in the case that the network device is configured with multiple CORESETs, the network device may choose to send the beam failure recovery request response on the CORESET earlier in time according to the positions of the multiple CORESETs in the time domain. In addition, the network device may choose to send the beam failure recovery request response on the CORESET corresponding to the cell with the smaller or larger identity according to the size of the identities of the at least two cells.
  • the time window used to control the overall time of the BFR ie, the time window used to control the beam failure recovery, denoted as: the second time window.
  • a second time window may be configured for each cell group, or a second time window may be configured for each cell.
  • a second time window can be configured for each cell, but this application does not limit the above configuration methods, and other reasonable configuration methods should also fall within the protection scope of this application.
  • the second time window may be beamFailureRecoveryTimer in the prior art, but the embodiment of the present application does not limit this.
  • a counter used to control the number of retransmissions of the beam failure recovery request (denoted as: the second counter).
  • a second counter may be configured for each cell group, or a second counter may be configured for each cell.
  • a second counter can be configured for each cell, but this application does not limit the above configuration methods, and other reasonable configuration methods should also fall within the protection scope of this application.
  • the second counter may be the preambleTransMax in the prior art, but the embodiment of the present application does not limit this.
  • the terminal device can perform beam failure detection, newly available beam discovery, and send a beam failure recovery request and receive a beam failure recovery response, that is, the terminal device can perform a beam failure recovery process.
  • a beam failure recovery method includes: a network device generates one or more BFR configurations, and the one or more BFR configurations are used for multiple associated cells to perform beam failure recovery; The terminal device sends the one or more BFR configurations.
  • the terminal device can perform beam failure recovery according to one or more BFR configurations provided by the network device.
  • the content included in the BFR configuration can be referred to the description of the first aspect, which is not repeated here.
  • the method may further include: the network device receives a beam failure recovery request sent by the terminal device, where the beam failure recovery request is used to indicate at least one of the multiple cells A beam failure occurs in a cell; the network device sends a beam failure recovery request response for the beam failure recovery request to the terminal device, and the beam failure recovery request response is used to indicate that the beam failure recovery of the multiple cells is successful.
  • the beam failure recovery method when beam failure occurs in at least one cell, it is considered that beam failure occurs in other cells associated with the cell, and if one of the associated cells fails to recover from beam failure, it is considered All other cells failed to recover from beam failure. Therefore, there is no need to separately perform the beam failure recovery process for each cell, so that the beam failure recovery process of multiple cells is simplified, and the purpose of reducing overhead and time delay can be achieved.
  • the method further includes:
  • the network device sends a media access control control element MAC CE to the terminal device, where the MAC CE is used to add at least one target beam to the beam lists of the PDCCH, PDSCH, PUCCH and/or PUSCH respectively corresponding to the multiple cells,
  • the at least one target beam is used for the terminal device to communicate with the network device in the multiple cells.
  • the network device receives the PUCCH in the multiple cells through the receive beam corresponding to the at least one available beam;
  • the network device transmits the PDCCH and/or PDSCH through the at least one available beam in the multiple cells.
  • a communication device which includes modules or units for executing the method in the first aspect and any one of the possible implementation manners of the first aspect.
  • a communication device including a processor.
  • the processor is coupled with the memory and can be used to execute instructions in the memory to implement the foregoing first aspect and the method in any one of the possible implementation manners of the first aspect.
  • the communication device further includes a memory.
  • the communication device further includes a communication interface, and the processor is coupled with the communication interface.
  • the communication device is a terminal device.
  • the communication interface may be a transceiver, or an input/output interface.
  • the communication device is a chip configured in a terminal device.
  • the communication interface may be an input/output interface.
  • the transceiver may be a transceiver circuit.
  • the input/output interface may be an input/output circuit.
  • a communication device which includes modules or units for executing the second aspect and the method in any one of the possible implementation manners of the second aspect.
  • a communication device including a processor.
  • the processor is coupled with the memory and can be used to execute instructions in the memory to implement the foregoing second aspect and the method in any one of the possible implementation manners of the second aspect.
  • the communication device further includes a memory.
  • the communication device further includes a communication interface, and the processor is coupled with the communication interface.
  • the communication device is a network device.
  • the communication interface may be a transceiver or an input/output interface.
  • the communication device is a chip configured in a network device.
  • the communication interface may be an input/output interface.
  • the transceiver may be a transceiver circuit.
  • the input/output interface may be an input/output circuit.
  • a processor including: an input circuit, an output circuit, and a processing circuit.
  • the processing circuit is configured to receive signals through the input circuit and transmit signals through the output circuit, so that the processor executes the method in any one of the first aspect to the second aspect and any one of the first aspect to the second aspect.
  • the foregoing processor may be a chip
  • the input circuit may be an input pin
  • the output circuit may be an output pin
  • the processing circuit may be a transistor, a gate circuit, a flip-flop, and various logic circuits.
  • the input signal received by the input circuit may be received and input by, for example, but not limited to, a receiver
  • the signal output by the output circuit may be, for example, but not limited to, output to and transmitted by the transmitter
  • the circuit can be the same circuit, which is used as an input circuit and an output circuit at different times.
  • the embodiments of the present application do not limit the specific implementation manners of the processor and various circuits.
  • a processing device including a processor and a memory.
  • the processor is used to read instructions stored in the memory, receive signals through a receiver, and transmit signals through a transmitter to execute any one of the first aspect to the second aspect and any one of the first aspect to the second aspect.
  • processors there are one or more processors and one or more memories.
  • the memory may be integrated with the processor, or the memory and the processor may be provided separately.
  • the memory can be a non-transitory (non-transitory) memory, such as a read only memory (ROM), which can be integrated with the processor on the same chip, or can be set in different On the chip, the embodiment of the present application does not limit the type of memory and the setting mode of the memory and the processor.
  • ROM read only memory
  • sending measurement configuration information may be a process of outputting measurement configuration information from the processor
  • receiving information may be a process of receiving information by the processor.
  • the processed output data may be output to the transmitter, and the input data received by the processor may come from the receiver.
  • the transmitter and receiver can be collectively referred to as a transceiver.
  • the processing device in the above eighth aspect may be a chip, and the processor may be implemented by hardware or software.
  • the processor When implemented by hardware, the processor may be a logic circuit, an integrated circuit, etc.; when implemented by software
  • the processor may be a general-purpose processor, which is implemented by reading software codes stored in the memory.
  • the memory may be integrated in the processor, may be located outside the processor, and exist independently.
  • a computer program product includes: a computer program (also called code, or instruction), which when the computer program is run, causes the computer to execute the first to second aspects above And the method in any one of the possible implementations of the first aspect to the second aspect.
  • a computer program also called code, or instruction
  • a computer-readable medium stores a computer program (also called code, or instruction) when it runs on a computer, so that the computer executes the first to second aspects above.
  • a computer program also called code, or instruction
  • a communication system including the aforementioned network equipment and terminal equipment.
  • Figure 1 is a schematic diagram of a communication system suitable for this application.
  • Fig. 2 is an exemplary flow chart of the beam failure recovery method provided by the present application.
  • Fig. 3 is a schematic structural diagram of a communication device provided by the present application.
  • Fig. 4 is a schematic structural diagram of a terminal device provided by the present application.
  • Fig. 5 is a schematic structural diagram of a network device provided by the present application.
  • GSM global system for mobile communications
  • CDMA code division multiple access
  • WCDMA broadband code division multiple access
  • GPRS general packet radio service
  • LTE long term evolution
  • FDD frequency division duplex
  • TDD LTE Time division duplex
  • UMTS universal mobile telecommunication system
  • WiMAX worldwide interoperability for microwave access
  • the network device in this application is a device deployed in a wireless access network to provide wireless communication functions for terminal devices.
  • Network equipment includes, but is not limited to: evolved Node B (eNB), Radio Network Controller (RNC), Node B (Node B, NB), Base Station Controller (BSC) , Base transceiver station (Base Transceiver Station, BTS), home base station (for example, Home evolved NodeB, or Home Node B, HNB), baseband unit (BaseBand Unit, BBU), wireless fidelity (Wireless Fidelity, WIFI) system Access point (Access Point, AP), wireless relay node, wireless backhaul node, transmission point (transmission point, TP) or transmission and reception point (transmission and reception point, TRP), etc., can also be 5G, such as NR ,
  • the gNB may include a centralized unit (CU) and a DU.
  • the gNB may also include a radio unit (RU).
  • CU implements some functions of gNB
  • DU implements some functions of gNB, for example, CU implements radio resource control (radio resource control, RRC), packet data convergence protocol (packet data convergence protocol, PDCP) layer functions
  • DU implements wireless link
  • RRC radio resource control
  • PDCP packet data convergence protocol
  • DU implements wireless link
  • RLC radio link control
  • MAC media access control
  • PHY physical
  • the network device may be a CU node, or a DU node, or a device including a CU node and a DU node.
  • the CU can be divided into network equipment in an access network (radio access network, RAN), and the CU can also be divided into network equipment in a core network (core network, CN), which is not limited in this application.
  • the terminal equipment in this application may also be referred to as user equipment (UE), terminal, access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile equipment, user terminal, terminal , Wireless communication equipment, user agent or user device.
  • the terminal device in the embodiment of the present application may be a mobile phone (mobile phone), a tablet computer (pad), a computer with wireless transceiver function, a virtual reality (VR) terminal device, and an augmented reality (AR) terminal Equipment, wireless terminals in industrial control, wireless terminals in unmanned driving (self-driving), wireless terminals in remote medical, wireless terminals in smart grid, transportation safety ( Wireless terminals in transportation safety, wireless terminals in smart cities, and wireless terminals in smart homes.
  • the embodiment of this application does not limit the application scenario.
  • two communication devices with communication connections can obtain gain through beamforming (beamforing) respectively.
  • the transmitting end such as the network device 110
  • the receiving end such as the terminal device 120
  • the transmitting end can obtain the pairing relationship between the transmitting beam and the receiving beam through beam training.
  • the beam can be understood as a spatial filter, spatial parameters, or spatial domain filter.
  • the beam used to transmit a signal can be called a transmission beam (Tx beam), or it can be called a spatial domain transmission filter or a spatial transmission parameter;
  • the beam used to receive a signal can be It is called a receive beam (reception beam, Rx beam), or can be called a spatial domain receive filter (spatial domain receive filter) or a spatial receive parameter (spatial RX parameter).
  • the transmitting beam may refer to the distribution of signal strength in different directions in space after a signal is transmitted through the antenna
  • the receiving beam may refer to the signal strength distribution of the wireless signal received from the antenna in different directions in space.
  • the beam may be a wide beam, or a narrow beam, or other types of beams.
  • the beam forming technology may be beamforming technology or other technologies.
  • the beamforming technology may specifically be a digital beamforming technology, an analog beamforming technology, or a hybrid digital/analog beamforming technology, etc.
  • multiple beams with the same or similar communication characteristics are regarded as one beam.
  • One or more antenna ports can be included in a beam for transmitting data channels, control channels, and sounding signals.
  • One or more antenna ports forming a beam can also be regarded as an antenna port set.
  • the beam may be a spatial filter, for example.
  • this application does not exclude the possibility of defining other terms to represent the same or similar meanings in future agreements.
  • the beam pairing relationship that is, the pairing relationship between the transmitting beam and the receiving beam, that is, the pairing relationship between the spatial transmitting filter and the spatial receiving filter.
  • a larger beamforming gain can be obtained by transmitting signals between the transmitting beam and the receiving beam with a beam pairing relationship.
  • the transmitting end may send the reference signal through beam scanning, and the receiving end may also receive the reference signal through beam scanning.
  • the transmitting end can form beams with different directivities in the airspace by beamforming, and can poll on multiple beams with different directivities to transmit the reference signal through beams with different directivities, so that The power of the reference signal transmitted in the direction of the transmission beam can reach the maximum.
  • the receiving end can also form beams with different directivities in the airspace through beamforming, and can poll on multiple beams with different directivities to receive reference signals through beams with different directivities, so that the receiving end can receive The power of the reference signal can reach the maximum in the direction in which the receiving beam points.
  • the receiving end can perform channel measurement based on the received reference signal, and report the measurement result to the transmitting end through CSI.
  • the receiving end can report a part of the reference signal resource with a larger reference signal receiving power (RSRP) to the sending end, such as reporting the identification of the reference signal resource, so that the sending end can use the channel when transmitting data or signaling.
  • RSRP reference signal receiving power
  • the reference signal can be used for beam measurement or beam quality monitoring.
  • Beam measurement is to obtain beam quality information by measuring a reference signal.
  • Parameters used to measure beam quality include RSRP and hypothetical block error ratio (hypothetical BLER), but are not limited to this.
  • beam quality can also be determined by reference signal receiving quality (RSRQ), signal-noise ratio (signal-noise ratio, SNR), signal-to-interference plus noise ratio (SINR, or signal-to-interference ratio). Noise ratio) and other parameters.
  • RSSQ reference signal receiving quality
  • SNR signal-noise ratio
  • SINR signal-to-interference plus noise ratio
  • Noise ratio Noise ratio
  • the reference signal resource can be used to configure the transmission attributes of the reference signal, for example, the position of the time-frequency resource, the port mapping relationship, the power factor, and the scrambling code. For details, refer to the prior art.
  • the transmitting end device may send the reference signal based on the reference signal resource, and the receiving end device may receive the reference signal based on the reference signal resource.
  • the reference signals involved in the embodiments of the present application may include, for example, channel state information reference signal (CSI-RS), synchronization signal block (synchronization signal block, SSB), and sounding reference signal (sounding reference signal, SRS).
  • CSI-RS channel state information reference signal
  • SSB synchronization signal block
  • SRS sounding reference signal
  • the reference signal resources may include CSI-RS resources (CSI-RS resources), SSB resources, and SRS resources (SRS resources).
  • SSB can also be called synchronization signal/physical broadcast channel block (synchronization signal/physical broadcast channel block, SS/PBCH block), and the corresponding SSB resource can also be called synchronization signal/physical broadcast channel block resource (SS/PBCH block resource), which can be abbreviated as SSB resource.
  • SSB can also refer to SSB resources.
  • the SSB can be regarded as an SS/PBCH block, and the SSB resource can be regarded as an SS/PBCH block resource.
  • each reference signal resource can correspond to a reference signal resource identifier, for example, CSI-RS resource indicator (CSI-RS resource indicator, CRI), SSB resource indicator (SSB resource indicator, SSBRI) , SRS resource index (SRS resource index, SRI).
  • CSI-RS resource indicator CRI
  • SSB resource indicator SSB resource indicator, SSBRI
  • SRS resource index SRS resource index, SRI
  • the SSB resource identifier may also be referred to as an SSB identifier (SSB index).
  • the signals corresponding to the antenna ports with the QCL relationship have the same parameters, or the parameters of one antenna port can be used to determine the parameters of the other antenna port that has the QCL relationship with the antenna port, or the two antenna ports have the same parameters , Or, the parameter difference between the two antenna ports is less than a certain threshold.
  • the parameters may include one or more of the following: delay spread, Doppler spread, Doppler shift, average delay, average Gain, spatial reception parameters (spatial Rx parameters).
  • the spatial reception parameters may include one or more of the following: angle of arrival (angle of arrival, AOA), average AOA, AOA extension, angle of departure (angle of departure, AOD), average departure angle AOD, AOD extension, reception Antenna spatial correlation parameter, transmit antenna spatial correlation parameter, transmit beam, receive beam, and resource identifier.
  • the above-mentioned angle may be decomposition values of different dimensions, or a combination of decomposition values of different dimensions.
  • Antenna ports are antenna ports with different antenna port numbers, and/or antenna ports that have the same antenna port number for information transmission or reception in different time and/or frequency and/or code domain resources, and/or have different Antenna port number The antenna port for information transmission or reception in different time and/or frequency and/or code domain resources.
  • the resource identifier may include: CSI-RS resource identifier, or SRS resource identifier, or SSB resource identifier, or the resource identifier of the preamble sequence transmitted on the Physical Random Access Channel (PRACH), or the demodulation reference signal (DMRS) resource identifier is used to indicate the beam on the resource.
  • CSI-RS resource identifier or SRS resource identifier, or SSB resource identifier, or the resource identifier of the preamble sequence transmitted on the Physical Random Access Channel (PRACH), or the demodulation reference signal (DMRS) resource identifier is used to indicate the beam on the resource.
  • the above QCL relationship can be divided into the following four types based on different parameters:
  • Type A Doppler frequency shift, Doppler spread, average delay, and delay spread;
  • Type B Doppler frequency shift, Doppler spread
  • Type C Doppler frequency shift, average delay
  • Type D (type D): Space receiving parameters.
  • QCL involved in the embodiment of the present application is a type D QCL.
  • QCL can be understood as a QCL of type D, that is, a QCL defined based on spatial reception parameters.
  • the QCL relationship between the port of the downstream signal and the port of the downstream signal, or the port of the upstream signal and the port of the upstream signal can be that the two signals have the same AOA or AOD , Used to indicate the same receive beam or transmit beam.
  • the AOA and AOD of the two signals may have a corresponding relationship, or the AOD and AOA of the two signals may have a corresponding relationship, that is, the beam can be used Reciprocity, the uplink transmission beam is determined according to the downlink reception beam, or the downlink reception beam is determined according to the uplink transmission beam.
  • the signal transmitted on the port with the QCL relationship may also have a corresponding beam, and the corresponding beam includes at least one of the following: the same receiving beam, the same sending beam, and the sending beam corresponding to the receiving beam (corresponding to the scenario with reciprocity) ), the receiving beam corresponding to the sending beam (corresponding to the scenario with reciprocity).
  • the signal transmitted on the port with the QCL relationship can also be understood as using the same spatial filter to receive or transmit the signal.
  • the spatial filter may be at least one of the following: precoding, weight of the antenna port, phase deflection of the antenna port, and amplitude gain of the antenna port.
  • the signal transmitted on the port with the QCL relationship can also be understood as having a corresponding beam pair link (BPL), and the corresponding BPL includes at least one of the following: the same downlink BPL, the same uplink BPL, and corresponding to the downlink BPL The upstream BPL of, and the downstream BPL corresponding to the upstream BPL.
  • BPL beam pair link
  • the spatial reception parameter (ie, QCL of type D) can be understood as a parameter for indicating the direction information of the reception beam.
  • TCI Transmission configuration indicator
  • TCI can be used to indicate the QCL relationship between two reference signals.
  • Network equipment can configure a TCI state (TCI state) list for terminal equipment through high-level signaling (such as radio resource control (RRC) messages), and can use high-level signaling (such as MAC CE) or physical layer signaling ( For example, DCI activates or indicates one or more of the TCI states.
  • the network device can configure the TCI state list for the terminal device through the RRC message, and the terminal device is receiving the physical downlink control channel (PDCCH) from the network device.
  • RRC radio resource control
  • PDCCH physical downlink control channel
  • one or more of the control channel TCI status list can be activated according to the MAC CE instruction, where the control channel TCI status list is a subset of the above TCI status list; the terminal device can obtain DCI from the PDCCH, and then according to the DCI Indicate the selection of one or more TCI states in the data channel TCI state list, where the data channel TCI state list is a subset of the above TCI state list and is indicated to the terminal device through MAC CE signaling.
  • the configuration information of a TCI state may include the identification of one or two reference signal resources and the associated QCL type.
  • the terminal device can demodulate the PDCCH or PDSCH according to the indication of the TCI status.
  • the terminal device can know which transmit beam is used by the network device to transmit signals, and then can determine which receive beam to use to receive signals according to the beam pairing relationship determined by the channel measurement.
  • BFR is also called link recovery procedures (link recovery procedures) in the physical layer protocol.
  • the beam quality in this application is also called radio link quality (radio link quality).
  • the prior art standardizes the process of beam failure recovery between network equipment and terminal equipment.
  • the terminal equipment side it mainly includes the following four parts:
  • the network device can configure reference signal resources for beam failure detection.
  • the beam failure instance indication (beam failure instance indication) is sent to the upper layer of the terminal device. If the beam failure instance indication occurs for N consecutive times, the upper layer of the terminal device announces that the beam failure has occurred, and N is a positive integer. It should be understood that this application does not limit the specific parameters of threshold#1. For example, threshold#1 can be the assumed block error rate.
  • threshold#1 may be RSRP.
  • the physical layer of the terminal device sends a beam failure instance indication to the upper layer of the terminal device.
  • the higher layer may be the MAC layer, but this application does not limit it.
  • the network device may configure the terminal device with reference signal resources used to determine available beams (or called candidate beams or newly available beams), that is, a candidate reference signal resource set or called a candidate beam set.
  • the terminal device detects whether there is a candidate reference signal resource whose beam quality is better than the threshold value threshold#2 in the candidate reference signal resource set, and if so, reports the candidate reference signal resource whose beam quality is better than the threshold value threshold#2 to the network device.
  • threshold#2 may be an assumed block error rate. In this case, the beam quality is better than threshold#2, which may mean that the assumed block error rate is less than or equal to threshold#2.
  • threshold#1 can be the reference signal received power (L1-reference signal received power, L1-RSRP) of layer 1.
  • L1-RSRP reference signal received power
  • the beam quality is better than threshold#2, which can mean that L1-RSRP is greater than or equal to threshold#2 .
  • the upper layer of the terminal device determines the available beam (marked as q_new), and informs its associated random access channel (RACH) resource to the physical layer of the terminal device, and the physical layer of the terminal device sends the beam on the RACH resource.
  • the preamble sequence (ie, BFRQ) corresponding to the available beam is used to implicitly inform the network equipment that the terminal device has a beam failure on the serving cell where the RACH resource is located, and that the terminal device has found a new available beam (ie, The beam corresponding to the reference signal resource corresponding to the RACH resource).
  • the terminal device After sending the beam failure recovery request, the terminal device uses q_new to monitor a dedicated control channel resource set (control resource set, CORESET) and its corresponding search space (search space) in order to obtain the terminal device's response to the BFRQ.
  • the response of the terminal device to the BFRQ is a downlink control channel (physical downlink control channel, PDCCH), that is, if the terminal device receives the PDCCH in the search space corresponding to the dedicated control channel resource set, the beam failure recovery is successful.
  • PDCCH physical downlink control channel
  • FIG. 1 shows a schematic diagram of a communication system suitable for the present application.
  • the communication system 100 may include at least one network device, such as the network device 110 shown in FIG. 1; the communication system 100 may also include at least one terminal device, such as the terminal device 120 shown in FIG. 1.
  • the terminal device 120 and the network device 110 may communicate in a manner of carrier aggregation (CA).
  • CA carrier aggregation
  • the network device 110 communicates with the terminal device 120 through aggregate component carriers (CC) CC1, CC2, and CC3.
  • CC1 corresponds to cell 1
  • CC2 corresponds to cell 2
  • CC3 corresponds to cell 3
  • cell 1 may be a primary cell (PCell)
  • cell 2 and cell 3 may be secondary cells (SCell).
  • PCell primary cell
  • SCell secondary cells
  • the network device 110 may also aggregate more cells, and the three cells shown in FIG. 1 are only exemplary. It should also be understood that the cell and component carrier in this application represent the same concept, and the two can be used interchangeably.
  • the current technology specifies the beam failure recovery process of the primary cell (for example, cell 1 shown in Figure 1). Through the beam failure recovery process, the primary cell can adjust the current failed beam to the available beam, thereby avoiding frequent wireless links caused by beam failure The road fails. However, how the secondary cell performs beam failure recovery is not covered in the prior art.
  • the present application provides a beam failure recovery method.
  • a beam failure occurs in at least one cell, it is considered that other cells associated with the at least one cell have beam failures, and if at least one of these associated cells If the beam fails to recover successfully, it is considered that other cells have failed to recover successfully. Therefore, there is no need to separately perform the beam failure recovery process for each cell, so that the beam failure recovery process of multiple cells is simplified, and the purpose of reducing overhead and time delay can be achieved.
  • the solution of this application can be applied to a scenario where multiple associated cells use the same set of beams. That is, no matter which cell they work in, the beams of the network equipment and terminal equipment have only a few fixed beams. For example, the network device has only fixed 64 beams to receive/send signals, and the terminal device has only fixed 8 beam directions to receive/send signals.
  • Fig. 2 is a schematic flowchart of a beam failure recovery method provided according to the present application.
  • the method may include S210 to S270, and each step is described in detail below.
  • S210 The network device sends the BFR configuration of multiple associated cells to the terminal device.
  • the terminal device receives the BFR configuration sent by the network device.
  • the multiple cells may include or may not include the primary cell, that is, all of them are secondary cells, but this application does not limit this.
  • the multiple cells may correspond to one cell group. That is, the network device can group cells, and the multiple cells are grouped into one group.
  • a master cell group (MCG) or a secondary cell group (SCG) in the prior art may be reused to group cells, that is, a cell group may be one MCG or SCG.
  • MCG master cell group
  • SCG secondary cell group
  • other methods may be used to group cells, for example, cells using the same beam may be grouped into a group, and the present application does not limit the manner of cell grouping. The meaning of "cells using the same beam" will be described in detail below, and will not be described here.
  • a cell group can uniquely correspond to a group identifier.
  • the group ID can be configured by the network device, and the terminal device can determine which cells belong to a cell group according to the group ID.
  • the multiple cells may also be cells using the same beam.
  • the use of the same beam in the multiple cells may mean any of the following:
  • the PDCCH beams of the multiple cells are the same.
  • PDCCH beams are the same.
  • the CORESET with the same index (or identifier) in the CORESET corresponding to the multiple cells corresponds to the same activated TCI.
  • the multiple cells are cell 1, cell 2, and cell 3. If the CORESET corresponding to cell 1 is CORESET ⁇ 1, 2, 3 ⁇ , and the activated TCI corresponding to CORESET ⁇ 1, 2, 3 ⁇ is TCI ⁇ 1,2,3 ⁇ , then the activated TCI corresponding to CORESET ⁇ 1,2,3 ⁇ corresponding to cell 2 and cell 3 are also TCI ⁇ 1,2,3 ⁇ respectively.
  • the CORESET with the same index among the CORESETs corresponding to the multiple cells corresponds to the same configuration TCI.
  • the multiple cells are cell 1, cell 2, and cell 3.
  • the CORESET corresponding to cell 1 is CORESET ⁇ 1, 2, 3 ⁇
  • the configuration TCI corresponding to CORESET ⁇ 1, 2, 3 ⁇ is TCI respectively ⁇ 1,2;3,4;5,6 ⁇
  • the configuration TCI corresponding to CORESET1 is TCI1 and TCI2
  • the configuration TCI corresponding to CORESET2 is TCI3 and TCI4
  • the configuration TCI corresponding to CORESET3 is TCI5 and TCI6, then cell 2 and
  • the configuration TCI corresponding to the CORESET ⁇ 1, 2, 3 ⁇ corresponding to the cell 3 is also TCI ⁇ 1,2; 3, 4; 5, 6 ⁇ respectively.
  • the activated TCI set corresponding to all CORESETs corresponding to one cell is the same as the activated TCI set corresponding to all CORESETs corresponding to the other cell.
  • the multiple cells are cell 1, cell 2, and cell 3, if all the CORESETs corresponding to cell 1 are CORESET ⁇ 1, 2, 3 ⁇ , and any CORESET in CORESET ⁇ 1, 2, 3 ⁇ corresponds to All activated TCIs belong to TCI ⁇ 1,2,3 ⁇ , then the activated TCI corresponding to any CORESET in all CORESETs corresponding to cell 2 belongs to TCI ⁇ 1,2,3 ⁇ , and all CORESETs corresponding to cell 3 The activated TCI corresponding to any CORESET also belongs to TCI ⁇ 1,2,3 ⁇ .
  • the configured TCI set corresponding to all CORESETs corresponding to one cell is the same as the configured TCI set corresponding to all CORESETs corresponding to the other cell.
  • the multiple cells are cell 1, cell 2, and cell 3, if all the CORESETs corresponding to cell 1 are CORESET ⁇ 1, 2, 3 ⁇ , and any CORESET in CORESET ⁇ 1, 2, 3 ⁇ corresponds to All configuration TCIs belong to TCI ⁇ 1,2,3,4,5,6 ⁇ , then the activated TCI corresponding to any CORESET of all CORESETs corresponding to cell 2 belongs to TCI ⁇ 1,2,3,4,5 ,6 ⁇ , the activated TCI corresponding to any CORESET in all the CORESETs corresponding to cell 3 also belongs to TCI ⁇ 1,2,3,4,5,6 ⁇ .
  • the multiple TCI list configurations corresponding to the multiple cells have a non-empty intersection.
  • the multiple cells have a one-to-one correspondence with the multiple TCI list configurations.
  • the TCI list configuration ⁇ 1,2 ,3 ⁇ can be exactly the same; or, two of the TCI list configurations are a subset of another TCI list configuration, for example, TCI list configurations 1 and 2 are a subset of 3; or, one of the TCI list configurations is the other two A subset of the TCI list configuration, for example, TCI list configuration 1 is a subset of 2 and 3.
  • the multiple cells may also be associated in other ways, which is not limited in this application.
  • multiple cells in a band are associated cells. That is, the multiple cells in this application may belong to the same frequency band.
  • the network equipment can allocate a set of BFR configurations to the multiple cells.
  • the network device may configure a set of BFR configurations for each cell group, that is, the BFR configuration of each cell in a cell group is the same.
  • the BFR configuration of each cell in a cell group is the same.
  • multiple high-frequency cells in one SCG can use the same BFR configuration.
  • a network device can configure a set of BFR configurations for cells that use the same beam.
  • the network device configures a set of BFR configurations for each of the multiple cells. For any two cells of the plurality of cells, the content included in the BFR configuration corresponding to one cell and the content included in the BFR configuration corresponding to the other cell may be partly or completely the same, or may be different.
  • the BFR configuration in this application may include one or more of the following (1) to (7), and the following is an explanation of each item.
  • Reference signal resource set used for beam failure detection (denoted as: set q 0 )
  • a set q 0 may be configured for each cell, where the set q 0 corresponding to each cell may be the same or different.
  • the reference signal corresponding to the set q 0 may be located on some or all of the multiple cells.
  • the reference signal corresponding to the set q 0 may be located on any one or more of the multiple cells.
  • the reference signal corresponding to the set q 0 of a certain cell may be located on this cell, or on another cell, or on this cell and other cells.
  • the terminal device can determine whether a beam failure occurs in the cell by detecting the set q 0 corresponding to the cell. For example, if the terminal device detects that the beam quality corresponding to the set q 0 corresponding to cell 1 of the multiple cells is worse than a preset threshold, such as threshold#1, it sends a beam failure instance indication to the upper layer of the terminal device. If the beam failure instance indication occurs consecutively preset times (for example, N times), the terminal device determines that the beam failure occurs in cell 1, and N is a positive integer.
  • a preset threshold such as threshold#1
  • the reference signal described in this application being located in a certain cell means that the frequency domain resource that carries the reference signal belongs to the frequency band where the cell is located.
  • the set q 1 may also be referred to as a candidate beam set, which is used by the terminal device to determine an available beam (or the new available beam described in the foregoing), that is, the available beam determined by the terminal device belongs to the set q 1 .
  • a set q 1 may be configured for each cell, where the set q 1 corresponding to each cell may be the same or different.
  • the reference signal corresponding to the set q 1 may be located on some or all of the multiple cells. Further, the reference signal corresponding to the set q 1 and the reference signal corresponding to the set q 0 may be located on the same cell. Of course, the two may also be located on different cells, which is not limited in this application.
  • a counter (denoted as: the first counter) and/or time window (denoted as: the first time window) used to determine beam failure.
  • the first counter records the number of reported beam failure instance indications, which may be the BFI_COUNTER in the prior art, but the embodiment of the present application does not limit this.
  • the beam failure instance indication is reported. And every time a beam failure instance indication is reported, the first counter is incremented by 1, and when the first counter reaches a preset number of times, such as N, it is determined that a beam failure has occurred.
  • the reference signal quality is lower than the threshold event is detected and reported for N consecutive times, it is determined that the beam has failed. It should be understood that the event that the reference signal quality is lower than the threshold means that the beam quality corresponding to the reference signal resource in the set q 0 is worse than the preset threshold.
  • the first time window the time interval for each determination and reporting of the reference signal quality lower than the threshold event.
  • the terminal device may perform beam failure detection in the first time window, and if it detects and reports the reference signal quality lower than the threshold event for N consecutive times in the first time window, it is determined that the beam fails. It should be understood that the reporting here means that the physical layer of the terminal device reports to the higher layer of the terminal device.
  • the terminal device can clear or reset the first counter and/or the first time window of the cell.
  • a first counter and/or a first time window may be configured for each cell group, or a first counter and/or a first time window may be configured for each cell.
  • a first counter and/or a first time window can be configured for each cell, but this application does not limit the above configuration methods, and other reasonable configuration methods should also fall within the protection scope of this application.
  • the uplink resources include time domain resources and frequency domain resources. It can be understood that the time domain resource indicates the position of the uplink resource in the time domain, and the frequency domain resource indicates the position of the uplink resource in the frequency domain.
  • the uplink resource may also include resources such as code domain and/or space domain.
  • the network device may configure one or more uplink resources for sending the beam failure recovery request.
  • the network device may configure the uplink resource on one of the multiple cells, that is, the uplink resource used for sending the beam failure recovery request may be located on one of the multiple cells.
  • the network device may also configure the uplink resources on two or more cells among the multiple cells, that is, the uplink resources used for sending the beam failure recovery request are located on at least two cells.
  • the terminal device can select the uplink resource with the earlier time according to the position of the uplink resources on the at least two cells in the time domain. Send beam failure recovery request.
  • the terminal device may select an uplink resource on a cell with a smaller or larger identity to send the beam failure recovery request according to the size of the identities of the at least two cells.
  • the frequency domain position of the uplink resource belongs to the frequency band corresponding to the cell.
  • the uplink resource used to send the beam failure recovery request may be associated with the set q 1.
  • the other one of the two may be determined By.
  • the association relationship between the uplink resource and the set q 1 may be configured by a network device or specified by an agreement, which is not limited in this application. It can be understood that in the case where the terminal device knows the association relationship between the uplink resource and the set q 1 , the network device may only configure one of the uplink resource and the set q 1 .
  • the network device may only configure one search space set, which corresponds to one of the multiple cells, that is, the frequency domain position of the search space included in the search space set belongs to the cell The corresponding frequency band.
  • the network device may also configure at least two search space sets, and the at least two search space sets have a one-to-one correspondence with at least two of the multiple cells, that is, one search space set corresponds to one cell.
  • a search space set may include one or more search spaces.
  • one CORESET can correspond to one search space set or multiple search space sets.
  • the network device can configure only one CORESET or its corresponding search space set, and the terminal device can determine the corresponding search space set or CORESET according to the corresponding relationship between the CORESET and the search space set, and the CORESET corresponds to one of the multiple cells , That is, the frequency domain position of the CORESET belongs to the frequency band corresponding to the cell.
  • the network device may also configure at least two CORESETs or search space sets corresponding to each CORESET respectively.
  • the at least two CORESETs correspond to at least two of the multiple cells in a one-to-one correspondence, that is, one CORESET corresponds to one cell.
  • the network device may choose to send the beam failure recovery request response on the CORESET earlier in time according to the positions of the multiple CORESETs in the time domain.
  • the network device may choose to send the beam failure recovery request response on the CORESET corresponding to the cell with the smaller or larger identity according to the size of the identities of the at least two cells.
  • the terminal device opens the second time window when determining that a beam failure occurs, and if the beam failure recovery request response is not received when the second time window expires, it is determined that the beam failure recovery is not successful. Further, the terminal device may no longer use the method of the present application for beam failure recovery. For example, the terminal device may use other methods such as contention-based random access for beam failure recovery.
  • a second time window may be configured for each cell group, or a second time window may be configured for each cell.
  • a second time window can be configured for each cell, but this application does not limit the above configuration methods, and other reasonable configuration methods should also fall within the protection scope of this application.
  • the terminal device can clear or reset the corresponding second time window.
  • the second time window may be beamFailureRecoveryTimer in the prior art, but the embodiment of the present application does not limit this.
  • a counter used to control the number of retransmissions of the beam failure recovery request (denoted as: the second counter).
  • the terminal device After determining that a beam failure occurs, the terminal device sends a beam failure recovery request to the network device. If the beam failure recovery request response is not received within a preset time, the beam failure recovery request is sent again. Each time a beam failure recovery request is sent, the second counter is incremented by 1. If the terminal device has not received the beam failure recovery request response when the second counter reaches the preset maximum value, the beam failure recovery request is not retransmitted.
  • a second counter may be configured for each cell group, or a second counter may be configured for each cell.
  • a second counter can be configured for each cell, but this application does not limit the above configuration methods, and other reasonable configuration methods should also fall within the protection scope of this application.
  • the terminal device can clear or reset the corresponding second counter if the terminal device receives a beam failure recovery request response when the second counter does not overflow or does not reach the preset maximum value.
  • the second counter may be the preambleTransMax in the prior art, but the embodiment of the present application does not limit this.
  • the terminal device detects that at least one of the multiple cells has a beam failure.
  • S230 The terminal device determines that beam failure occurs in the multiple cells.
  • the terminal device can determine (or detect) whether beam failure occurs in the cell by detecting the set q 0 corresponding to the cell. For example, for cell 1 of the multiple cells, if the terminal device detects that the beam quality corresponding to the set q 0 corresponding to cell 1 is worse than a preset threshold, such as threshold#1, it sends a beam failure instance indication to the upper layer of the terminal device . If the beam failure instance indication occurs for a preset number of consecutive times, for example, the first counter reaches the maximum value, the terminal device may determine that the beam failure occurs in cell 1.
  • a preset threshold such as threshold#1
  • the upper layer of the terminal device can determine that the beam fails in cell 1. If the terminal device detects that the beam failure occurs in cell 1, it is considered that other cells in the multiple cells also have beam failure, that is, the multiple cells all have beam failure.
  • the number of the at least one cell may be 1, that is, if the terminal device detects that a beam failure occurs in one of the multiple cells (for example, cell 1), it determines that the multiple cells all have a beam failure.
  • cell 1 may be the cell where beam failure occurs first among the multiple cells.
  • other cells in the multiple cells may also have beam failures at the same time. For example, in the case where the BFR configuration adopts the above method 1, the multiple cells may have beam failures at the same time.
  • the terminal device detects that one of the multiple cells has a beam failure or at least one cell has a beam failure at the same time, it determines that the multiple cells have a beam failure.
  • the meaning of "simultaneous” here can be extended to "almost simultaneously", in other words, the at least one cell has beam failures within a preset time period, or the time difference between the beam failures of the at least one cell that has beam failures does not exceed The preset duration.
  • the MAC entity that manages cell 1 can notify the MAC entity that manages other cells of the multiple cells (for example, cell 2) that the beam fails in cell 1 .
  • the MAC entity of cell 2 considers that cell 1 also has a beam failure.
  • the MAC entity of cell 2 clears or resets the first counter and/or the first counter of cell 2 according to the notification of the MAC entity of cell 1.
  • the method may further include:
  • the terminal device determines at least one available beam, so that each cell of the multiple cells communicates with the network device through the at least one available beam.
  • the at least one available beam is used by the terminal device to communicate with the network device on each of the multiple cells.
  • S240 may be performed when the network device configures the set q 1 for the terminal device, and in this case, the at least one available beam may be determined by the terminal device itself.
  • the at least one available beam belongs to a set q 1 corresponding to one cell (denoted as: the first cell) of the multiple cells. That is, the at least one available beam is determined from the set q 1 corresponding to the first cell.
  • the set q 1 corresponding to the first cell may be configured by the network device for the cell group to which the first cell belongs, or may be dedicated to the first cell.
  • the first cell may be at least one cell where the beam occurs, or it may be the at least one cell, which is not limited in this application.
  • the terminal device may determine the at least one available beam according to the set q 1 respectively corresponding to the multiple cells.
  • the terminal device may perform beam measurement on the reference signal corresponding to the set q 1 corresponding to each cell, and select the one with the best beam quality or meeting preset conditions.
  • beams corresponding to multiple reference signals are used as the at least one available beam.
  • the terminal device can determine the beam with the best beam quality in each cell by performing beam measurement on the reference signal corresponding to the set q 1 corresponding to each cell, and then determine the beam with the best beam quality in each cell.
  • One or more beams are selected from the beams as the at least one available beam.
  • the one or more reference signals with the best beam quality or meeting preset conditions may belong to the set q 1 corresponding to the first cell.
  • the terminal device may determine the at least one available beam from the set q 1 corresponding to any cell (for example, the first cell) of the multiple cells.
  • the terminal device determines the at least one available beam, and the at least one available beam is the new available beam of each cell in the multiple cells. Since the at least one available beam belongs to the candidate beam set corresponding to the first cell, then if the first available beam is If the beam failure recovery procedure of a cell succeeds, the terminal device can communicate with the network device through the at least one available beam in each cell of the multiple cells.
  • the beam failure recovery method when beam failure occurs in at least one cell, it is considered that beam failure occurs in other cells associated with the cell, and if at least one of the associated cells fails to recover from beam failure, then It is considered that other cells have failed to recover from beam failure. Therefore, there is no need to separately perform the beam failure recovery process for each cell, so that the beam failure recovery process of multiple cells is simplified, and the purpose of reducing overhead and time delay can be achieved.
  • the at least one available beam may belong to a candidate beam set corresponding to two or more cells in the plurality of cells.
  • one beam may be selected as the available beam from the candidate beam sets corresponding to cell 1 and the campus respectively.
  • the method may also include:
  • the terminal device sends a beam failure recovery request to the network device according to the at least one available beam.
  • the terminal device may determine the transmission beam failure recovery based on the association relationship between the set q 1 and the uplink resource used to send the beam failure recovery request
  • the requested uplink resource can then send a beam failure recovery request on the uplink resource.
  • the terminal device can directly select the uplink resource for sending the beam failure recovery request, and send the beam failure recovery request on the uplink resource request.
  • the terminal device may generate a beam failure recovery request on the only uplink resource used to generate a beam failure recovery request.
  • the terminal device can select multiple uplink resources that are used to generate the beam failure recovery request, which is earlier in time, so that the beam failure recovery request can be sent as soon as possible to realize the beam failure recovery as soon as possible.
  • the terminal device receives a beam failure recovery request response for the beam failure recovery request sent by the network device.
  • the beam failure recovery request response is used to indicate that the beam failure recovery of the multiple cells is successful.
  • the network device may send a beam failure recovery request response on the corresponding CORESET and/or search space set.
  • the terminal device detects the beam failure recovery request response on the corresponding CORESET and/or search space set, and if the beam failure recovery request response is received, the beam failure recovery request response of the first cell is successfully recovered, and the terminal device confirms the multiple The beams of other cells in the cell failed to recover successfully.
  • the terminal device determines that the beam of cell 1 fails to recover successfully, the MAC entity managing cell 1 notifies the MAC entity of managing cell 2 that the beam of cell 1 fails to recover successfully. According to the notification of cell 1, the MAC entity of cell 2 considers that the beam of cell 2 has failed to recover successfully. Further, the MAC entity of cell 2 may clear or reset the second time window and/or the second counter of cell 2 to zero.
  • the beam failure recovery request includes any one of the following information: the identity corresponding to the multiple cells, the identity of one of the multiple cells, the beam identity of the PDCCH corresponding to the multiple cells, Or the identity of the cell group corresponding to multiple cells.
  • the network device may determine the cell group or cell where the beam failure occurs according to the identities corresponding to the multiple cells or the identities of the cell group corresponding to the multiple cells.
  • the network device can determine the occurrence of the occurrence based on the identity corresponding to the multiple cells, the identity of one of the multiple cells, or the beam identity of the PDCCH corresponding to the multiple cells. The multiple cells where the beam failed.
  • S240 may be executed after S250.
  • the terminal device when the network device does not configure the set q 1 for the terminal device, the terminal device cannot determine the at least one available beam by itself. In this case, at the same time or after determining that the multiple cells have beams, the terminal device may send a beam failure recovery request to the network device to notify the network device that the multiple cells have beam failures. After the network device receives the beam failure recovery request, the network device may configure at least one beam for a cell in the multiple cells, such as the first cell, and other cells in the multiple cells also use the at least one beam as Available beams; or, the network device may configure at least one beam for each cell group as an available beam for each cell of the cell group. Correspondingly, according to the configuration of the network device, the terminal device can determine the at least one available beam.
  • S250 may be executed instead of S240.
  • the network device after the network device receives the beam failure recovery request, it can turn off the transmission of multiple cells, that is, the terminal device does not expect to communicate with the network device on the multiple cells.
  • the network device after the network device receives the beam failure recovery request, it can trigger beam training to find available beams.
  • the method may further include:
  • the terminal device communicates with the network device through the at least one available beam on the multiple cells.
  • the terminal device may communicate with the network device through the at least one available beam or the receiving beam corresponding to the at least one available beam in the beam failure state. For example, before the network device performs beam reconfiguration, the terminal device transmits the PUCCH on the multiple cells through the transmission beam corresponding to the at least one available beam; and/or, the terminal device transmits the PUCCH on the multiple cells through the at least one available beam.
  • the beam can be used to receive PDCCH and/or PDSCH.
  • the beam failure state refers to the period of time before the beam failure recovery request response is received after the terminal device determines that it has a beam failure in a certain cell and sends a beam failure recovery request, that is, the beam has not recovered successfully. a period of time.
  • the terminal device uses the at least one available beam to communicate with the network device in the beam failure state, which can avoid communication interruption caused by the beam failure and ensure the continuity of communication.
  • the method may also include:
  • the network device sends the MAC CE to the terminal device.
  • the terminal device receives the MAC CE sent by the network device.
  • the MAC CE is used to add at least one target beam to the beam lists of the PDCCH, PDSCH, PUCCH and/or PUSCH corresponding to the multiple cells respectively, and the target beam is used by the terminal device to perform in the multiple cells and the network device. Communication.
  • the at least one target beam may be the at least one available beam.
  • the network device can perform beam reconfiguration on the cell, and the network device can configure at least one available beam reported by the terminal device to the terminal device, or can configure other beams.
  • the MAC CE may be for any one of the multiple cells.
  • the terminal device receives the above-mentioned MAC CE of the cell, it can be considered that the beam configuration performed by the MAC CE is for the multiple cells, that is, the terminal device believes that the multiple cells all use the target beam to send or receive PDCCH, PDSCH, PUCCH And/or PUSCH.
  • the purpose of updating the beam configurations of multiple cells through signaling for one cell can be achieved, so that there is no need to perform beam configuration for each cell, and signaling overhead is saved.
  • the prior art adopts RRC+MAC CE two-level configuration to activate the target beam, and the method of this application introduces a new MAC CE, which can achieve the purpose of activating the target beam without the need for RRC pre-configuration. Reduce the frequency of RRC reconfiguration and further reduce signaling overhead.
  • the MAC CE may also be for cell grouping, and the specific format of the MAC CE is not limited in this application.
  • the MAC-CE signaling includes one or more of the following: identification of at least one target beam, cell identification, cell grouping identification, bandwidth part (BWP) identification, PDCCH resource identification (That is, CORESET ID), PUCCH resource ID, PUCCH resource collection ID, CSI-RS resource ID, CSI-RS resource collection ID, CSI-RS resource setting ID, SRS resource ID, SRS resource collection ID, SRS group ID.
  • PDCCH resource identification That is, CORESET ID
  • PUCCH resource ID PUCCH resource collection ID
  • CSI-RS resource ID CSI-RS resource collection ID
  • CSI-RS resource setting ID CSI-RS resource setting ID
  • SRS resource ID SRS resource collection ID
  • SRS group ID SRS group ID
  • the MAC-CE needs to include: at least one target beam identifier, in ⁇ cell ID/cell group ID/BWP ID ⁇ One or more of the PDCCH resource identifiers (ie CORESET identifiers).
  • the MAC-CE when MAC-CE signaling is used to add a new beam configuration to multiple cells as PUCCH beams, the MAC-CE needs to include: at least one target beam ID, in ⁇ cell ID/cell group ID/BWP ID ⁇ One or more of the PUCCH resource identifiers.
  • the foregoing MAC-CE signaling may be identified by the LCID (logic channel) of the MAC-CE.
  • adding the target beam to the beam list of the PDCCH and/or PDSCH can be achieved by adding the TCI corresponding to the target beam to the beam list of the PDCCH and/or PDSCH, but this application does not limit this. It should also be understood that adding the target beam to the beam list of PUCCH and/or PUSCH can be implemented by adding the spatial relation corresponding to the target beam to the beam list of PUCCH and/or PUSCH, but this application Not limited.
  • Fig. 3 is a schematic block diagram of a communication device provided by an embodiment of the present application.
  • the communication device 300 may include a processing unit 310.
  • the communication device 300 may further include a transceiver unit 320.
  • the communication device 300 may correspond to the terminal device in the above method embodiment, for example, it may be a terminal device or a chip configured in the terminal device.
  • the processing unit may be a processor
  • the transceiver unit may be a transceiver.
  • the communication device may further include a storage unit, and the storage unit may be a memory. The storage unit is used to store instructions, and the processing unit executes the instructions stored in the storage unit, so that the communication device executes the foregoing method.
  • the processing unit may be a processor, and the transceiver unit may be an input/output interface, a pin or a circuit, etc.; the processing unit executes the instructions stored in the storage unit to enable the communication
  • the device executes the operations performed by the terminal device in the above method 2
  • the storage unit can be a storage unit in the chip (for example, a register, a cache, etc.), or a storage unit located outside the chip in the communication device ( For example, read only memory, random access memory, etc.)
  • the communication device 300 may correspond to the terminal device in the method according to the embodiment of the present application, and the communication device 300 may include a unit for executing the method executed by the terminal device in the method in FIG. 2.
  • each unit in the communication device and other operations and/or functions described above are intended to implement the corresponding process of the method in FIG. 2.
  • the processing unit 310 may be used to perform S220 to S240 in the method shown in FIG. 2
  • the transceiving unit 320 may be used to perform S210 and S250 to S280 in the method shown in FIG. 2.
  • the processing unit 310 is configured to detect that a beam failure occurs in at least one of the multiple associated cells; determine that a beam failure occurs in the multiple cells; the processing unit is also configured to determine at least one available beam, which is at least One available beam is used by the terminal device to communicate with the network device on each of the multiple cells, where the at least one available beam belongs to a set of candidate beams corresponding to one of the multiple cells.
  • the processing unit 310 is specifically configured to determine the at least one available beam when at least one of the multiple cells is configured with a candidate beam set.
  • the transceiving unit 320 is configured to: send a beam failure recovery request to the network device according to the at least one available beam; receive a beam failure recovery request response for the beam failure recovery request, and the beam fails The recovery request response is used to indicate that the beams of the multiple cells have failed to recover successfully.
  • the transceiving unit 320 is further configured to: receive a media access control control element MAC CE sent by the network device, where the MAC CE is used to add at least one target beam to the physical downlink corresponding to the multiple cells.
  • the at least one target beam is used by the device to communicate with the network on the multiple cells The device communicates.
  • the transceiving unit 320 is further configured to: transmit the PUCCH through the transmission beam corresponding to the at least one available beam in the multiple cells; and/or, through the at least one available beam in the multiple cells Receive PDCCH and/or PDSCH.
  • the processing unit 310 is further configured to: reset or clear the time windows for the control beam failure recovery corresponding to the multiple cells, and/or, respectively correspond to the multiple cells Reset or clear the counter used to control the number of beam failure recovery request retransmissions.
  • the processing unit 310 is further configured to: reset or clear counters corresponding to the multiple cells for determining beam failure, and/or use the multiple cells to correspond to each other.
  • the time window for determining beam failure is reset or cleared.
  • the communication device 800 may correspond to the network device in the above method embodiment, for example, it may be a network device or a chip configured in the network device.
  • the processing unit may be a processor
  • the transceiver unit may be a transceiver.
  • the communication device may further include a storage unit, and the storage unit may be a memory. The storage unit is used to store instructions, and the processing unit executes the instructions stored in the storage unit, so that the communication device executes the foregoing method.
  • the processing unit may be a processor, and the transceiver unit may be an input/output interface, a pin or a circuit, etc.; the processing unit executes the instructions stored in the storage unit to enable the
  • the communication device executes the operations performed by the network device in the above method
  • the storage unit may be a storage unit in the chip (for example, a register, a cache, etc.), or a storage unit located outside the chip in the communication device ( For example, read-only memory, random access memory, etc.).
  • the communication device 300 may correspond to the network device in the method according to the embodiment of the present application, and the communication device 300 may include a unit for executing the method executed by the network device in FIG. 2.
  • each unit in the communication device 300 and other operations and/or functions described above are intended to implement the corresponding process of the method 200 in FIG. 2.
  • the transceiving unit 320 may be used to execute S210 and S250 to S280 in the method in FIG.
  • the processing unit 310 may be used to generate one or more BFR configurations, and the one or more BFR configurations are used for beam failure recovery in multiple associated cells; the transceiver unit 320 may be used to send the one or more BFR configurations to the terminal device. BFR configuration.
  • the transceiver unit 320 is further configured to receive a beam failure recovery request sent by the terminal device, where the beam failure recovery request is used to indicate that at least one cell of the multiple cells has a beam failure; and send to the terminal device a beam failure recovery request; A beam failure recovery request response of the failed recovery request, where the beam failure recovery request response is used to indicate that the beam failure recovery of the multiple cells is successful.
  • the transceiving unit 320 is further configured to generate a medium access control control element MAC CE to the terminal device, and the MAC CE is used to add at least one target beam to the PDCCH, PDSCH, PUCCH, and PDCCH corresponding to the multiple cells. /Or in the PUSCH beam list, the at least one target beam is used for the terminal device to communicate with the network device in the multiple cells.
  • MAC CE medium access control control element
  • the transceiving unit 320 is further configured to receive PUCCH in the multiple cells through the receiving beam corresponding to the at least one available beam; and/or, the network device sends the PDCCH and the PDCCH through the at least one available beam in the multiple cells / Or PDSCH.
  • the network equipment in each of the above device embodiments corresponds to the network equipment or terminal equipment in the terminal equipment and method embodiments, and the corresponding modules or units execute the corresponding steps, for example, the transceiver unit (transceiver) method executes the method. And/or the steps of receiving, other steps except sending and receiving may be executed by the processing unit (processor).
  • the transceiving unit may include a transmitting unit and/or a receiving unit, the transceiver may include a transmitter and/or a receiver, which respectively implement the transceiving function; there may be one or more processors.
  • the above-mentioned terminal device or network device may be a chip, and the processing unit may be realized by hardware or software.
  • the processing unit may be a logic circuit, integrated circuit, etc.; when realized by software,
  • the processing unit may be a general-purpose processor, which is implemented by reading software codes stored in a storage unit.
  • the storage unit may be integrated in the processor, or may be located outside the processor and exist independently.
  • FIG. 4 is a schematic structural diagram of a terminal device 10 provided by this application. For ease of description, FIG. 4 only shows the main components of the terminal device. As shown in FIG. 4, the terminal device 10 includes a processor, a memory, a control circuit, an antenna, and an input and output device.
  • the processor is mainly used to process the communication protocol and communication data, and to control the entire terminal device, execute the software program, and process the data of the software program, for example, to support the terminal device to perform the actions described in the above method embodiment.
  • the memory is mainly used to store software programs and data.
  • the control circuit is mainly used for the conversion of baseband signals and radio frequency signals and the processing of radio frequency signals.
  • the control circuit and the antenna together can also be called a transceiver, which is mainly used to send and receive radio frequency signals in the form of electromagnetic waves.
  • Input and output devices such as touch screens, display screens, and keyboards, are mainly used to receive data input by users and output data to users.
  • the processor can read the software program in the storage unit, interpret and execute the instructions of the software program, and process the data of the software program.
  • the processor performs baseband processing on the data to be sent and outputs the baseband signal to the radio frequency circuit.
  • the radio frequency circuit performs radio frequency processing on the baseband signal and then sends the radio frequency signal to the outside in the form of electromagnetic waves through the antenna.
  • the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, and the processor converts the baseband signal into data and processes the data.
  • FIG. 4 only shows a memory and a processor. In actual terminal devices, there may be multiple processors and memories.
  • the memory may also be referred to as a storage medium or a storage device, etc., which is not limited in the embodiment of the present application.
  • the processor may include a baseband processor and a central processing unit.
  • the baseband processor is mainly used to process communication protocols and communication data.
  • the central processing unit is mainly used to control the entire terminal device and execute Software program, processing the data of the software program.
  • the processor in FIG. 4 integrates the functions of the baseband processor and the central processing unit.
  • the baseband processor and the central processing unit may also be independent processors, which are interconnected by technologies such as buses.
  • the terminal device may include multiple baseband processors to adapt to different network standards, the terminal device may include multiple central processors to enhance its processing capabilities, and various components of the terminal device may be connected through various buses.
  • the baseband processor can also be expressed as a baseband processing circuit or a baseband processing chip.
  • the central processing unit can also be expressed as a central processing circuit or a central processing chip.
  • the function of processing the communication protocol and communication data can be built in the processor, or can be stored in the storage unit in the form of a software program, and the processor executes the software program to realize the baseband processing function.
  • the antenna and control circuit with the transceiver function may be regarded as the transceiver unit 101 of the terminal device 10, and the processor with the processing function may be regarded as the processing unit 102 of the terminal device 10.
  • the terminal device 10 includes a transceiver unit 101 and a processing unit 102.
  • the transceiver unit may also be referred to as a transceiver, a transceiver, a transceiver, and so on.
  • the device for implementing the receiving function in the transceiver unit 101 can be regarded as the receiving unit, and the device for implementing the sending function in the transceiver unit 101 as the sending unit, that is, the transceiver unit 101 includes a receiving unit and a sending unit.
  • the receiving unit may also be called a receiver, a receiver, a receiving circuit, etc.
  • the sending unit may be called a transmitter, a transmitter, or a transmitting circuit, etc.
  • the terminal device shown in FIG. 4 can perform various actions performed by the terminal device in the foregoing method. Here, in order to avoid redundant description, detailed descriptions thereof are omitted.
  • Fig. 5 is a schematic structural diagram of a network device provided by the present application.
  • the network device may be a base station, for example. As shown in Fig. 5, the base station can be applied to the communication system shown in Fig. 1 to perform the functions of the network device in the above method embodiment.
  • the base station 20 may include one or more radio frequency units, such as a remote radio unit (RRU) 201 and one or more baseband units (BBU) (also known as digital units (DU)) ) 202.
  • RRU 201 may be called a transceiver unit, a transceiver, a transceiver circuit, or a transceiver, etc., and it may include at least one antenna 2011 and a radio frequency unit 2012.
  • the RRU 201 part is mainly used for receiving and sending of radio frequency signals and conversion of radio frequency signals and baseband signals, for example, for transmitting the BFR configuration of the foregoing method embodiment.
  • the BBU 202 part is mainly used for baseband processing, control of the base station, and so on.
  • the RRU 201 and the BBU 202 may be physically set together, or may be physically separated, that is, a distributed base station.
  • the BBU 202 is the control center of the base station, and may also be called a processing unit, which is mainly used to complete baseband processing functions, such as channel coding, multiplexing, modulation, and spreading.
  • the BBU (processing unit) 202 may be used to control the base station to execute the operation procedure of the network device in the foregoing method embodiment.
  • the BBU 202 may be composed of one or more single boards, and multiple single boards may jointly support a radio access network (such as an LTE network) with a single access indication, or may respectively support different access standards Wireless access network (such as LTE network, 5G network or other network).
  • the BBU 202 further includes a memory 2021 and a processor 2022, and the memory 2021 is used to store necessary instructions and data.
  • the processor 2022 is used to control the base station to perform necessary actions, for example, used to control the base station to execute the operation procedure of the network device in the foregoing method embodiment.
  • the memory 2021 and the processor 2022 may serve one or more single boards. In other words, the memory and the processor can be set separately on each board. It can also be that multiple boards share the same memory and processor. In addition, necessary circuits can be provided on each board.
  • the network equipment is not limited to the above forms, and may also be in other forms: for example: including BBU and adaptive radio unit (ARU), or BBU and active antenna unit (AAU); or Customer premises equipment (CPE) may also be in other forms, which is not limited by this application.
  • ARU adaptive radio unit
  • AAU BBU and active antenna unit
  • CPE Customer premises equipment
  • the processor in the embodiment of the present application may be an integrated circuit chip with signal processing capability.
  • the steps of the foregoing method embodiments can be completed by hardware integrated logic circuits in the processor or instructions in the form of software.
  • the aforementioned processor may be a general-purpose processor, a digital signal processor (digital signal processor, DSP), an application specific integrated circuit (ASIC), a field programmable gate array (field programmable gate array, FPGA) or other Programming logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • Programming logic devices discrete gates or transistor logic devices, discrete hardware components.
  • the methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers.
  • the storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.
  • processor in this embodiment of the application may be a central processing unit (central processing unit, CPU), and the processor may also be other general-purpose processors, digital signal processors (digital signal processors, DSP), and application-specific integrated circuits. (application specific integrated circuit, ASIC), ready-made programmable gate array (field programmable gate array, FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc.
  • CPU central processing unit
  • DSP digital signal processors
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • programmable logic devices discrete gates or transistor logic devices, discrete hardware components, etc.
  • the memory in the embodiments of the present application may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory can be read-only memory (ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), electrically erasable programmable only Read memory (electrically EPROM, EEPROM) or flash memory.
  • the volatile memory may be random access memory (RAM), which is used as an external cache.
  • RAM random access memory
  • static random access memory static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • Access memory synchronous DRAM, SDRAM
  • double data rate synchronous dynamic random access memory double data rate SDRAM, DDR SDRAM
  • enhanced synchronous dynamic random access memory enhanced SDRAM, ESDRAM
  • synchronous connection dynamic random access memory Take memory (synchlink DRAM, SLDRAM) and direct memory bus random access memory (direct rambus RAM, DR RAM).
  • the present application also provides a computer program product, the computer program product includes: computer program code, when the computer program code runs on a computer, the computer executes the embodiment shown in FIG. 2 Method in.
  • the present application also provides a computer-readable medium storing program code, which when the program code runs on a computer, causes the computer to execute the embodiment shown in FIG. 2 Method in.
  • the present application also provides a system, which includes the aforementioned one or more terminal devices and one or more network devices.
  • the foregoing embodiments can be implemented in whole or in part by software, hardware, firmware or any other combination.
  • the above-mentioned embodiments may be implemented in the form of a computer program product in whole or in part.
  • the computer program product includes one or more computer instructions.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium.
  • the computer instructions may be transmitted from a website, computer, server, or data center.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or a data center that includes one or more sets of available media.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, and a magnetic tape), an optical medium (for example, a digital versatile disc (DVD)), or a semiconductor medium.
  • the semiconductor medium may be a solid state drive.
  • the size of the sequence number of the above-mentioned processes does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic, rather than corresponding to the embodiments of the present application.
  • the implementation process constitutes any limitation.
  • At least one of York or “at least one of York or “at least one of" herein means all or any combination of the listed items, for example, "A, At least one of B and C" can mean: A alone, B alone, C alone, A and B, B and C, and A, B and C.
  • B corresponding to A means that B is associated with A, and B can be determined according to A.
  • determining B according to A does not mean that B is determined only according to A, and B can also be determined according to A and/or other information.
  • the disclosed system, device, and method may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or It can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • each unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium.
  • the technical solution of this application essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in each embodiment of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (read-only memory, ROM), random access memory (random access memory, RAM), magnetic disk or optical disk and other media that can store program code .

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Abstract

La présente invention concerne un procédé de reprise sur défaillance de faisceau et un appareil de communication qui permettent d'éviter que des cellules n'effectuent séparément un processus de reprise sur défaillance de faisceau et d'atteindre le but de réduire le surdébit et le retard. Le procédé consiste : à déterminer, si un dispositif terminal détecte qu'une défaillance de faisceau se produit dans au moins une cellule parmi de multiples cellules qui sont associées, qu'une défaillance de faisceau se produit dans les multiples cellules ; à faire déterminer, par le dispositif terminal, au moins un faisceau disponible, le ou les faisceaux disponibles étant utilisés pour que le dispositif terminal communique avec un dispositif de réseau dans chaque cellule parmi les multiples cellules, le ou les faisceaux disponibles appartenant à un ensemble de faisceaux candidats correspondant à une cellule parmi les multiples cellules.
PCT/CN2020/080328 2019-03-26 2020-03-20 Procédé de reprise sur défaillance de faisceau et appareil de communication WO2020192566A1 (fr)

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WO2023066214A1 (fr) * 2021-10-20 2023-04-27 华为技术有限公司 Procédé de reprise sur défaillance de faisceau et appareil de communication

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