WO2021062672A1 - 一种发送波束失败恢复请求的方法及装置 - Google Patents

一种发送波束失败恢复请求的方法及装置 Download PDF

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Publication number
WO2021062672A1
WO2021062672A1 PCT/CN2019/109540 CN2019109540W WO2021062672A1 WO 2021062672 A1 WO2021062672 A1 WO 2021062672A1 CN 2019109540 W CN2019109540 W CN 2019109540W WO 2021062672 A1 WO2021062672 A1 WO 2021062672A1
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Prior art keywords
resource
beam failure
failure recovery
terminal device
information
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PCT/CN2019/109540
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English (en)
French (fr)
Inventor
张荻
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华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201980098115.XA priority Critical patent/CN114073146A/zh
Priority to PCT/CN2019/109540 priority patent/WO2021062672A1/zh
Publication of WO2021062672A1 publication Critical patent/WO2021062672A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • the embodiments of the present application relate to the field of communications, and in particular, to a method and device for sending a beam failure recovery request.
  • the fifth generation (5G) mobile communication system came into being, and the 5G mobile communication system It is called the new radio access technology (NR) system.
  • NR new radio access technology
  • a signal transmission mechanism based on beamforming technology is introduced, that is, the signal transmission power is increased by increasing the antenna gain, so as to compensate for the wireless signal path between the network equipment and the terminal equipment in the process of transmitting wireless signals in the high frequency band. loss.
  • the terminal device can measure the communication quality of the beam failure detection reference signal (BFD RS) configured by the network device to determine whether a beam failure occurs.
  • BFD RS beam failure detection reference signal
  • the terminal device When the terminal device determines that the beam fails, it sends a beam failure recovery request (BFRQ) to the network device on any physical uplink shared channel (PUSCH), so as to recover the failed link. If the BFRQ transmission fails, the terminal device needs to retransmit the BFRQ to ensure that the BFRQ transmission is successful. Therefore, the beam failure recovery time delay is increased.
  • BFRQ beam failure recovery request
  • the embodiments of the present application provide a method and device for sending a beam failure recovery request, which solves the problem of long beam failure recovery time delay.
  • this application provides a method for sending a beam failure recovery request.
  • the method can be applied to a terminal device, or the method can be applied to a communication device that can support the terminal device to implement the method.
  • the communication device includes a chip system.
  • the method includes: first determining the first resource, and sending N BFRQs on the first resource, where N is an integer greater than or equal to 1.
  • the method for sending a beam failure recovery request provided by the present application improves the transmission reliability by limiting the PUSCH resource for BFRQ transmission or by sending multiple identical BFRQs, and reduces the beam failure recovery time delay.
  • this application provides a method for receiving a beam failure recovery request.
  • the method can be applied to a network device, or the method can be applied to a communication device that can support the network device to implement the method.
  • the communication device includes a chip system.
  • the method includes: first determining the first resource, and receiving N BFRQs on the first resource, where N is an integer greater than or equal to 1.
  • the method for receiving a beam failure recovery request provided in the present application improves the transmission reliability by limiting the PUSCH resource for BFRQ transmission or by receiving multiple identical BFRQs, and reduces the beam failure recovery time delay.
  • determining the first resource includes: determining the first resource according to a beam failure case counter, and the beam failure case counter of the cell to which the first resource belongs is 0.
  • the beam failure case counter is 0, it means that the cell or cell group does not have beam failure, and the link quality of the cell or cell group is good. Therefore, the terminal device can select the resources of the cell with the beam failure case counter being 0 Determined as the first resource.
  • determining the first resource includes: determining the first resource according to the subcarrier interval, the subcarrier interval of the first resource is the largest among the subcarrier intervals of K resources, K is an integer, and K ⁇ 1. As the subcarrier spacing is larger, the length of an OFDM symbol is shorter. The resources with the largest subcarrier spacing can complete the transmission quickly. Therefore, the terminal device may select the resource with the largest subcarrier interval among the subcarrier intervals of K resources to be determined as the first resource, so as to complete the transmission of the beam failure request faster.
  • determining the first resource includes: determining the first resource according to the repeated identifier, and the first resource is configured with the repeated identifier.
  • the repeated identifier indicates that the resource can be used to repeatedly transmit multiple pieces of the same information.
  • the transmission reliability of the resource carrying the repeated identification is high, or the resource carrying the repeated identification can be used for the transmission of the URLLC service, and the resources allocated for the service need to ensure high-reliability and low-latency transmission. Therefore, transmitting the beam failure request on the resource carrying the repeated identifier can ensure the reliability of the transmission of the beam failure request, complete the beam failure recovery in time, and reduce the beam failure recovery time delay.
  • determining the first resource includes: determining the first resource according to a modulation and coding scheme, the modulation and coding scheme corresponding to the first resource is the smallest among the modulation and coding schemes corresponding to the L resources, and L is an integer, L ⁇ 1. Due to the smaller modulation and coding method, low-order modulation and low-rate channel coding schemes will be used to ensure communication quality. By selecting a smaller modulation and coding method, the transmission reliability of the beam failure recovery request can be ensured, thereby avoiding beam failure The retransmission of the recovery request reduces the delay of beam failure recovery.
  • the modulation and coding scheme corresponding to the first resource may refer to the modulation and coding scheme indicated by the indication information of the first resource.
  • N is predefined or configured.
  • N is determined according to the Modulation and Coding Scheme (MCS).
  • MCS Modulation and Coding Scheme
  • N beam failure recovery requests are independently coded. By repeatedly sending multiple beam failure recovery requests, the reliability of the beam failure recovery request transmission is improved.
  • this application provides a method for sending a beam failure recovery request.
  • the method can be applied to a terminal device, or the method can be applied to a communication device that can support the terminal device to implement the method.
  • the communication device includes a chip system.
  • the method includes: sending N BFRQs on the first resource, where N is an integer, and N ⁇ 2, and receiving beam failure recovery response information (may be referred to as Beam failure recovery response, BFRR for short).
  • the method for sending a beam failure recovery request provided by the present application improves transmission reliability by sending multiple identical BFRQs, and reduces the beam failure recovery time delay.
  • the present application provides a method for receiving a beam failure recovery request.
  • the method can be applied to a network device, or the method can be applied to a communication device that can support the network device to implement the method.
  • the communication device includes a chip system .
  • the method includes: receiving N BFRQs on the first resource, where N is an integer, and N ⁇ 2; and sending BFRR.
  • the method for receiving a beam failure recovery request provided by the present application improves the transmission reliability by receiving multiple identical BFRQs, and reduces the beam failure recovery time delay.
  • the N beam failure recovery requests are coded independently, and the N beam failure recovery requests are the same.
  • this application also provides a communication device for implementing the method described in the first aspect.
  • the communication device is a terminal device or a communication device that supports the terminal device to implement the method described in the first aspect.
  • the communication device includes a chip system.
  • the communication device includes: a processing unit and a sending unit.
  • the processing unit is configured to determine the first resource; the sending unit is configured to send N BFRQs on the first resource, where N is an integer, and N ⁇ 1.
  • this application also provides a communication device for implementing the method described in the second aspect.
  • the communication device is a network device or a communication device that supports the network device to implement the method described in the second aspect.
  • the communication device includes a chip system.
  • the communication device includes: a processing unit and a receiving unit.
  • the processing unit is configured to determine the first resource.
  • the receiving unit is configured to receive N BFRQs on the first resource, where N is an integer greater than or equal to 1.
  • the present application also provides a communication device for implementing the method described in the third aspect.
  • the communication device is a terminal device or a communication device that supports the terminal device to implement the method described in the third aspect.
  • the communication device includes a chip system.
  • the communication device includes: a sending unit and a receiving unit. The sending unit is used to send N BFRQs on the first resource, where N is an integer, and N ⁇ 2; the receiving unit is used to receive BFRR.
  • this application also provides a communication device for implementing the method described in the fourth aspect.
  • the communication device is a network device or a communication device that supports the network device to implement the method described in the fourth aspect.
  • the communication device includes a chip system.
  • the communication device includes: a receiving unit and a sending unit. The receiving unit is used to receive N BFRQs on the first resource, where N is an integer, and N ⁇ 2; the sending unit is used to send BFRR.
  • the functional modules of the fifth aspect and the eighth aspect described above can be implemented by hardware, or can be implemented by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above-mentioned functions.
  • the transceiver is used to complete the functions of the receiving unit and the transmitting unit
  • the processor is used to complete the function of the processing unit
  • the memory is used for the processor to process the program instructions of the method of the present application.
  • the processor, the transceiver, and the memory are connected through a bus and communicate with each other.
  • this application also provides a communication device for implementing the method described in the first aspect.
  • the communication device is a terminal device or a communication device that supports the terminal device to implement the method described in the first aspect, for example, the communication device includes a chip system.
  • the communication device includes a processor, configured to implement the functions of the method described in the first aspect.
  • the communication device may also include a memory for storing program instructions and data. The memory is coupled with the processor, and the processor can call and execute the program instructions stored in the memory to implement the functions in the method described in the first aspect.
  • the communication device may further include a communication interface, and the communication interface is used for the communication device to communicate with other devices. Exemplarily, if the communication device is a terminal device, the other device is a network device.
  • the specific method for sending the beam failure recovery request is the same as the corresponding description in the first aspect, and will not be repeated here.
  • this application also provides a communication device for implementing the method described in the second aspect.
  • the communication device is a network device or a communication device that supports the network device to implement the method described in the second aspect, for example, a chip system included in the communication device.
  • the communication device includes a processor, configured to implement the functions in the method described in the second aspect.
  • the communication device may also include a memory for storing program instructions and data. The memory is coupled with the processor, and the processor can call and execute program instructions stored in the memory to implement the functions in the method described in the second aspect.
  • the communication device may further include a communication interface, and the communication interface is used for the communication device to communicate with other devices. Exemplarily, if the communication device is a network device, the other device is a terminal device.
  • the specific method for receiving the beam failure recovery request is the same as the corresponding description in the second aspect, and will not be repeated here.
  • this application also provides a communication device for implementing the method described in the third aspect.
  • the communication device is a terminal device or a communication device that supports the terminal device to implement the method described in the third aspect, for example, the communication device includes a chip system.
  • the communication device includes a processor, configured to implement the functions of the method described in the third aspect.
  • the communication device may also include a memory for storing program instructions and data. The memory is coupled with the processor, and the processor can call and execute the program instructions stored in the memory to implement the functions in the method described in the third aspect.
  • the communication device may further include a communication interface, and the communication interface is used for the communication device to communicate with other devices. Exemplarily, if the communication device is a terminal device, the other device is a network device.
  • the specific method for sending the beam failure recovery request is the same as the corresponding description in the third aspect, and will not be repeated here.
  • this application also provides a communication device for implementing the method described in the fourth aspect.
  • the communication device is a network device or a communication device that supports the network device to implement the method described in the fourth aspect, for example, a chip system included in the communication device.
  • the communication device includes a processor, configured to implement the functions in the method described in the fourth aspect.
  • the communication device may also include a memory for storing program instructions and data. The memory is coupled with the processor, and the processor can call and execute the program instructions stored in the memory to implement the functions in the method described in the fourth aspect.
  • the communication device may further include a communication interface, and the communication interface is used for the communication device to communicate with other devices. Exemplarily, if the communication device is a network device, the other device is a terminal device.
  • the specific method for receiving the beam failure recovery request is the same as the corresponding description in the fourth aspect, and will not be repeated here.
  • this application also provides a computer-readable storage medium, including: computer software instructions; when the computer software instructions are executed in a communication device, the communication device is caused to execute any one of the first to fourth aspects mentioned above. The method described in the aspect.
  • this application also provides a computer program product containing instructions, which when the computer program product runs in a communication device, causes the communication device to execute the method described in any one of the first to fourth aspects above .
  • the present application provides a chip system that includes a processor and may also include a memory, which is used to implement the functions of the network device or the terminal device in the above method.
  • the chip system can be composed of chips, or it can include chips and other discrete devices.
  • this application also provides a communication system that includes the terminal device described in the fifth aspect or a communication device that supports the terminal device to implement the method described in the first aspect, and the network described in the sixth aspect A device or a communication device that supports a network device to implement the method described in the second aspect;
  • the communication system includes the terminal device described in the seventh aspect or a communication device that supports the terminal device to implement the method described in the third aspect, and the network device described in the eighth aspect or the network device that supports the method described in the fourth aspect.
  • the communication system includes the terminal device described in the ninth aspect or a communication device that supports the terminal device to implement the method described in the first aspect, and the network device described in the tenth aspect or the communication device that supports the network device to implement the method described in the second aspect.
  • the communication system includes the terminal device described in the eleventh aspect or a communication device that supports the terminal device to implement the method described in the third aspect, and the network device described in the twelfth aspect or the network device that supports the network device described in the fourth aspect.
  • Method of communication device is the terminal device described in the eleventh aspect or a communication device that supports the terminal device to implement the method described in the third aspect, and the network device described in the twelfth aspect or the network device that supports the network device described in the fourth aspect.
  • FIG. 1 is a schematic flowchart of a beam failure recovery process provided by an embodiment
  • FIG. 2 is a schematic diagram of the architecture of a communication system provided by an embodiment
  • FIG. 3 is a schematic diagram of the architecture of a communication system provided by an embodiment
  • FIG. 4 is a schematic diagram of the architecture of a communication system provided by an embodiment
  • FIG. 5 is a flowchart of a method for sending a beam failure recovery request provided by an embodiment
  • FIG. 6 is a flowchart of a method for sending a beam failure recovery request provided by an embodiment
  • FIG. 7 is a flowchart of a method for sending a beam failure recovery request provided by an embodiment
  • FIG. 8 is a schematic diagram of the composition of a communication device provided by an embodiment
  • FIG. 9 is a schematic diagram of the composition of a communication device provided by an embodiment.
  • words such as “exemplary” or “for example” are used as examples, illustrations, or illustrations. Any embodiment or design solution described as “exemplary” or “for example” in the embodiments of the present application should not be construed as being more preferable or advantageous than other embodiments or design solutions. To be precise, words such as “exemplary” or “for example” are used to present related concepts in a specific manner.
  • Control resource set (CORESET)
  • the network device can configure one or more resource sets for the terminal device to send a physical downlink control channel (PDCCH).
  • the network device can send a control channel to the terminal device on any control resource set corresponding to the terminal device.
  • the network device also needs to notify the terminal device of other associated configurations of the control resource set, such as a search space set.
  • the control resource set in this application may be a CORESET or control region defined by the 5G mobile communication system or an enhanced-physical downlink control channel (ePDCCH) set.
  • the time-frequency position occupied by the PDCCH can be referred to as the downlink control region.
  • the PDCCH In Long Term Evolution (LTE), the PDCCH is always located in the first m (m may be 1, 2, 3, and 4) symbols in a subframe. It should be noted that the positions of E-PDCCH and R-PDCCH in LTE are not in the first m symbols.
  • the downlink control area can be flexibly configured by radio resource control (Radio Resource Control, RRC) signaling through the control resource set and search space set:
  • RRC Radio Resource Control
  • the control resource set can be configured with PDCCH or control channel element (control channel element, CCE) frequency domain position, time domain continuous symbol number and other information;
  • the search space set can be configured with PDCCH detection period and offset, starting symbol in a time slot and other information.
  • the search space set can be configured with a PDCCH cycle as 1 time slot, and the time domain start symbol is symbol 0, then the terminal device can detect the PDCCH at the start position of each time slot.
  • the spatial-related parameter information may be quasi-collocation (QCL) information, or may be spatial-related information (spatial relation).
  • QCL information is used to indicate the spatial correlation parameters (also called spatial correlation characteristics) of downlink signals (such as PDCCH/PDSCH/CSI-RS/DMRS/TRS), and spatial correlation information is used to indicate uplink signals (such as PUCCH).
  • /PUSCH/SRS/DMRS spatial correlation parameters can also be referred to as spatial correlation characteristics).
  • Quasi-co-location can also be called quasi-co-location or co-location.
  • QCL information may also be referred to as QCL hypothesis information.
  • the QCL information is used to assist in describing the terminal equipment receiving beamforming information and the receiving process.
  • QCL information can be used to indicate the QCL relationship between two reference signals, where the target reference signal can generally be a demodulation reference signal (DMRS), a channel state information reference signal (CSI-RS) ), etc., and the reference signal or source reference signal to be quoted may generally be CSI-RS, synchronous signal broadcast channel block (synchronous signal/PBCH block, SSB), sounding reference signal (sounding reference signal, SRS), etc.
  • DMRS demodulation reference signal
  • CSI-RS channel state information reference signal
  • SRS sounding reference signal
  • TRS tracking reference signal
  • the target reference signal may generally be a downlink signal.
  • the signals corresponding to the antenna ports with the QCL relationship may have the same or similar spatial characteristic parameters (or called parameters), or the spatial characteristic parameters (or called parameters) of an antenna port may be used to determine the relationship with the antenna
  • the spatial characteristic parameter (or called the parameter) difference is smaller than a certain threshold.
  • the space-related information is used to assist in describing the beamforming information on the transmitting side of the terminal device and the transmission process.
  • the spatial correlation information is used to indicate the spatial transmission parameter relationship between two reference signals.
  • the target reference signal can generally be DMRS, SRS, etc.
  • the reference signal or source reference signal referred to can generally be CSI-RS, SRS, SSB etc. It should be understood that the target reference signal may generally be an uplink signal.
  • the spatial characteristic parameters of two reference signals or channels satisfying the QCL relationship are the same (or similar or similar), so that the spatial characteristic parameters of the target reference signal can be inferred based on the source reference signal resource index.
  • the spatial characteristics of the two reference signals or channels that satisfy the spatial correlation information are the same (or similar or similar), so that the spatial characteristics of the target reference signal can be inferred based on the source reference signal resource index parameter.
  • the spatial characteristic parameters include one or more of the following parameters:
  • Angle of incidence AoA
  • dominant (dominant) incidence angle AoA average incidence angle
  • power angular spectrum PAS
  • exit angle angle of departure, AoD
  • main exit angle Average exit angle, power angle spectrum of exit angle
  • terminal device transmit beamforming terminal device receive beamforming, spatial channel correlation, network device transmit beamforming, network device receive beamforming, average channel gain, average channel delay (average delay), delay spread (delay spread), Doppler spread (Doppler spread), Doppler shift (doppler shift), spatial reception parameters (spatial Rx parameters), etc.
  • the above-mentioned angle may be decomposition values of different dimensions, or a combination of decomposition values of different dimensions.
  • the antenna ports may be antenna ports with different antenna port numbers, and/or antenna ports with the same antenna port number for information transmission or reception in different time and/or frequency and/or code domain resources, and/or Different antenna port numbers are used to transmit or receive information in different time and/or frequency and/or code domain resources.
  • These spatial characteristic parameters describe the spatial channel characteristics between the antenna ports of the source reference signal and the target reference signal, and help the terminal device to complete the receiving-side beamforming or receiving process according to the QCL information. It should be understood that the terminal device can receive the target reference signal according to the receiving beam information of the source reference signal indicated by the QCL information; these spatial characteristic parameters also help the terminal device to complete the beamforming or transmission process at the transmitting side according to the spatial related information. It should be understood that the terminal device may transmit the target reference signal according to the transmit beam information of the source reference signal indicated by the spatial related information.
  • the network equipment may indicate the demodulation reference signal of the PDCCH or the physical downlink shared channel (physical downlink shared channel, PDSCH) and the terminal equipment
  • the reference signal may be a CSI-RS.
  • each reported CSI-RS resource index corresponds to a transmit and receive beam pair established during the previous measurement based on the CSI-RS resource. It should be understood that the receiving beam information of the two reference signals or channels that satisfy the QCL relationship is the same, and the terminal device can infer the receiving beam information of receiving the PDCCH or PDSCH according to the reference signal resource index.
  • Network equipment can configure one or more types of QCL for terminal equipment at the same time, such as QCL type A+D, C+D:
  • QCL types A Doppler shift, Doppler spread, average delay, delay spread
  • the QCL relationship refers to the QCL relationship of type D
  • it can be considered as an airspace QCL.
  • the antenna port satisfies the spatial QCL relationship, it can be the QCL relationship between the downlink signal port and the downlink signal port, or the QCL relationship between the uplink signal port and the uplink signal port (referred to as spatial relation above), which can be two
  • the two signals have the same AOA or AOD, which is used to indicate that they have the same receiving beam or transmitting 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 transmit beam is determined according to the downlink receive beam
  • the downlink receive beam is determined according to the uplink transmit beam.
  • the two antenna ports are spatial QCL, it can mean that the corresponding beam directions of the two antenna ports are spatially consistent. From the perspective of the receiving end, if the two antenna ports are spatial QCL, it can mean that the receiving end can receive the signals sent by the two antenna ports in the same beam direction.
  • the signal transmitted on the port with the spatial QCL relationship may also have a corresponding beam, and the corresponding beam may include at least one of the following: the same receiving beam, the same transmitting beam, and the transmitting beam corresponding to the receiving beam (corresponding to the reciprocity Scene), the receiving beam corresponding to the transmitting beam (corresponding to the scene with reciprocity).
  • the signal transmitted on the port with the spatial 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 spatial 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 the downlink BPL The corresponding uplink BPL, the downlink BPL corresponding to the uplink 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.
  • scenario applicable to the QCL hypothesis in this application may also be two reference signals, or an association relationship between transmission objects.
  • TCI Transmission configuration indicator
  • TCI is used to indicate the QCL information of a signal or channel.
  • the channel can be PDCCH/CORESET or PDSCH.
  • the signal can be CSI-RS, DMRS, TRS or PTRS, etc.
  • TCI information means that the reference signal included in the TCI satisfies the QCL relationship with the channel or signal. It is mainly used to indicate that when a signal or channel is received, its spatial characteristic parameters and other information are the same as the spatial characteristic parameters of the reference signal included in the TCI. Similar, similar.
  • a TCI state can be configured with one or more reference signals that are referenced, and the associated QCL type (QCL type).
  • QCL types can be divided into four categories: A, B, C, and D, which are different combinations or choices of ⁇ Doppler shift, Doppler spread, average delay, delay spread, and spatial Rx parameter ⁇ .
  • the TCI status includes QCL information, or the TCI status is used to indicate QCL information.
  • Synchronous signal broadcast channel block (synchronous signal/physical broadcast channel (physical broadcast channel, PBCH) block, SS/PBCH block)
  • the SS/PBCH block can also be called SSB.
  • the SSB includes at least one of a primary synchronization signal (primary synchronization signal, PSS), a secondary synchronization signal (secondary synchronization signal, SSS), and a PBCH. It is mainly used for cell search, cell synchronization, and signals that carry broadcast information.
  • a component carrier can also be called a component carrier, a component carrier, or a component carrier.
  • Each carrier in multi-carrier aggregation can be called "CC", and each carrier is composed of one or more physical resource blocks (PRB), and each carrier can have its own corresponding physical downlink control channel ( physical downlink control channel, PDCCH), scheduling the physical downlink shared channel (PDSCH) of each CC; or, some carriers do not have PDCCH, at this time, the carrier can be cross-carrier scheduling, that is, the PDCCH scheduling of one CC The PDSCH of another CC.
  • the terminal device can receive data on multiple CCs.
  • Carrier aggregation may refer to the aggregation of multiple continuous or non-continuous unit carriers into a larger bandwidth.
  • the primary cell/primary serving cell (primary cell/primary serving cell, PCell) is the cell where the CA UE resides. Generally, only the PCell has a physical uplink control channel (PUCCH).
  • PUCCH physical uplink control channel
  • the secondary primary cell (Primary Secondary Cell, PSCell) is a special secondary cell on the secondary base station (secondary eNodeB, SeNB) that the primary base station (master eNodeB, MeNB) configures to the DC UE through RRC connection signaling.
  • a secondary cell refers to a cell configured to terminal equipment of CA through RRC connection signaling. It works on SCC (secondary carrier) and can provide more radio resources for terminal equipment of CA.
  • the SCell can have only downlink or both uplink and downlink.
  • SpCell For dual connectivity (DC) scenarios, SpCell refers to the PCell of the primary cell group (MCG) or the PSCell of the secondary cell group (SCG); otherwise, As in the CA scenario, SpCell refers to PCell.
  • MCG primary cell group
  • SCG secondary cell group
  • MCG/SCG refers to the primary cell group where the cell serving the terminal equipment in the primary base station is located.
  • a group of serving cells associated with the MeNB includes a PCell and one or more SCells.
  • SCG means that the group of the cell serving the UE in the secondary base station is the secondary cell group. In the dual link mode, it includes PSCells and zero or more SCells.
  • the MeNB is the base station to which the cell where the DC terminal equipment resides.
  • SeNB is another base station configured by MeNB to DC UE through RRC connection signaling.
  • the beam is a communication resource.
  • the beam can be a wide beam, or a narrow beam, or other types of beams.
  • the beam forming technology may be beamforming technology or other technical means.
  • the beamforming technology can be specifically a digital beamforming technology, an analog beamforming technology, and a hybrid digital/analog beamforming technology. Different beams can be considered as different resources.
  • the same information or different information can be sent through different beams.
  • multiple beams with the same or similar communication characteristics may be regarded as one beam.
  • a beam can include one or more antenna ports for transmitting data channels, control channels, and sounding signals.
  • a transmit beam can refer to the distribution of signal strength formed in different directions in space after a signal is emitted by an antenna.
  • the receiving beam may refer to the signal strength distribution of the wireless signal received from the antenna in different directions in space. It is understandable that one or more antenna ports forming a beam can also be regarded as an antenna port set.
  • the beam can be divided into the transmitting beam and the receiving beam of the network device, and the transmitting beam and the receiving beam of the terminal device.
  • the transmitting beam of the network device is used to describe the beamforming information on the transmitting side of the network device
  • the receiving beam of the base station is used to describe the beamforming information on the receiving side of the network device
  • the transmitting beam of the terminal device is used to describe the beamforming information on the transmitting side of the terminal device.
  • the receive beam is used to describe the beamforming information on the receiving side of the terminal device. That is, beams are used to describe beamforming information.
  • the beam may correspond to time resources and/or space resources and/or frequency domain resources.
  • the beam may also correspond to a reference signal resource (for example, a reference signal resource for beamforming), or beamforming information.
  • a reference signal resource for example, a reference signal resource for beamforming
  • the beam may also correspond to the information associated with the reference signal resource of the network device, where the reference signal may be a channel state information reference signal (CSI-RS), SSB, and demodulation reference signal (demodulation reference signal).
  • CSI-RS channel state information reference signal
  • SSB SSB
  • demodulation reference signal demodulation reference signal
  • signal DMRS
  • phase tracking signal phase tracking reference signal
  • PTRS phase tracking reference signal
  • TRS tracking reference signal
  • the information associated with the reference signal resource can be a reference signal resource identifier, or QCL information (especially type D QCL) etc.
  • the reference signal resource identifier corresponds to a transceiver beam pair established during the previous measurement based on the reference signal resource, and the terminal can infer beam information through the reference signal resource index.
  • the beam may also correspond to a spatial filter (spatial filter or spatial domain filter) and a spatial domain transmission filter (spatial domain transmission filter).
  • a spatial filter spatial filter or spatial domain filter
  • a spatial domain transmission filter spatial domain transmission filter
  • the receive beam can be equivalent to a spatial transmission filter, a spatial transmission filter, a spatial receive filter, and a spatial receive filter
  • the transmit beam can be equivalent to a spatial filter, a spatial transmission filter, a spatial transmit filter, and a spatial transmit filter.
  • the information of spatial related parameters can be equivalent to a spatial filter (spatial dimain transmission/receive filter).
  • the spatial filter generally includes a spatial transmission filter and/or a spatial reception filter.
  • the spatial filter can also be called a spatial transmission filter, a spatial reception filter, a spatial transmission filter, a spatial transmission filter, and so on.
  • the receiving beam on the terminal device side and the transmitting beam on the network device side may be downlink spatial filters
  • the transmitting beam on the terminal device side and the receiving beam on the network device side may be uplink spatial filters.
  • the antenna port may also be abbreviated as a port.
  • the transmitting antenna recognized by the receiving device, or the transmitting antenna that can be distinguished in space.
  • One antenna port can be configured for each virtual antenna, each virtual antenna can be a weighted combination of multiple physical antennas, and each antenna port can correspond to a reference signal port.
  • the network device may configure one or more downlink/uplink bandwidth regions for the terminal device.
  • the BWP may be composed of continuous PRBs in the frequency domain, and the BWP is a subset of the bandwidth of the terminal device.
  • the minimum granularity of the BWP in the frequency domain is 1 PRB.
  • the system may configure one or more bandwidth regions for the terminal device, and the multiple bandwidth regions may overlap in the frequency domain.
  • a terminal device may have only one activated BWP at a time, and the terminal device can only receive data/reference signals or send data/reference signals on the activated BWP (active BWP).
  • a specific BWP may also be a bandwidth set on a specific frequency, or a set composed of multiple RBs.
  • Reference signal configured for detecting beam failure and restoring beam failure
  • the network device In order to detect beam failure, the network device needs to indicate to the terminal device a reference signal resource for beam failure detection (also referred to as a link failure detection reference signal resource).
  • the beam failure detection reference signal resource can have the following possible indication methods.
  • the network device can display to the terminal device the configuration of the beam failure detection reference signal resource set (beam failure detection RS set) (for example, beam failure detection RS resourceconfig or beam failure detection RS or failure detection resources) (also called beam failure detection RS set). Failure detection reference signal resource collection).
  • the network equipment configuration beam failure detection reference signal resource set may be indicated by one or more of RRC, MAC-CE, and DCI signaling.
  • the reference signal for beam failure detection can also be indicated in an implicit manner.
  • the reference signal associated in the TCI (such as type-D QCL) indicating the PDCCH is used as the reference signal for beam failure detection.
  • the reference signal is related to the PDCCH.
  • the DMRS is a reference signal that satisfies the QCL relationship and is a reference signal that is sent periodically.
  • the terminal device may detect the beam failure according to the beam failure detection reference signal resource set; when the network device does not display the configuration for beam failure detection When the reference signal resource is set, the terminal device may fail to detect the beam according to the reference signal indicated in the above implicit manner.
  • the RS in the beam failure detection reference signal resource set and the demodulation reference signal of the downlink physical control channel PDCCH satisfy the QCL relationship or use the same TCI state as the PDCCH, when the channel quality information of some or all of the reference signals in the set (for example, reference signal receiving power (reference signal receiving power, RSRP), channel quality indicator (channel quality indicator, CQI), block error ratio (block error ratio, BLER), signal to interference plus noise ratio (signal to interference plus noise ratio, SINR), signal-to-noise ratio (signal noise ratio, SNR, etc.) is lower than a predetermined threshold, it is determined that the beam has failed.
  • reference signal receiving power reference signal receiving power
  • RSRP channel quality indicator
  • CQI channel quality indicator
  • block error ratio block error ratio
  • SINR signal to interference plus noise ratio
  • SINR signal-to-noise ratio
  • the lower than the predetermined threshold may be N consecutive times lower than the predetermined threshold or N times lower than the predetermined threshold within a certain period of time.
  • the predetermined threshold may be referred to as a beam failure detection threshold, and may also be referred to as a beam failure threshold. It should be understood that as long as the threshold used for beam failure detection can be the predetermined threshold, the name of the predetermined threshold is not limited in this application.
  • the beam failure detection threshold may be configured by the network device, or may be the same threshold as the radio link failure OOS (out of sync) threshold.
  • the beam failure detection threshold when the network device is configured with a beam failure detection threshold, the beam failure detection threshold is used to detect beam failure; when the network device is not configured with a beam failure detection threshold, the wireless link out-of-synchronization threshold can be used as the beam failure detection threshold detection The beam failed.
  • the beam failure detection reference signal may be used for the terminal to detect the channel quality of a certain transmission beam of the network device, and the transmission beam is a beam used when the network device communicates with the terminal.
  • the network device can also indicate to the terminal device the reference signal resource set used to restore the link between the terminal device and the network device (candidate beam RS list or candidate beam RS identification resource or beam failure candidate beam resource or candidate beam identification RS Or candidate beam list) (also referred to as a candidate reference signal resource set or a beam failure recovery reference signal resource set).
  • the terminal device needs to select the reference signal resource whose channel quality information (such as one or more of the following RSRP, RSRQ, CQI, SINR, etc.) is higher than the predetermined threshold from the set of candidate reference signal resources to restore the communication link road.
  • the candidate beam identification RS is used by the terminal device to initiate a link reconfiguration reference signal set after the terminal device determines that the transmission beam of the network device has a beam failure.
  • the network device may display the reference signal resource set configured for beam failure recovery to the terminal device.
  • the network equipment configuration beam failure detection reference signal resource set may be indicated by one or more of RRC, MAC-CE, and DCI signaling.
  • the reference signal resource set used for beam failure recovery can also be a certain default reference signal resource set, (for example, the reference signal resource set used for beam management BM, or the reference signal resource set used for RRM measurement, all or part of it A set of reference signal resources composed of SSB, or a set of reference signal resources that multiplex other functions).
  • the reference signal resource set used for beam management may be a reference signal resource set whose repetition is marked as "off” (it may also be a reference signal resource set whose repetition is marked as "on”).
  • the reference signal is identified in the reference signal resource set; when the network device is not configured with a candidate reference signal resource set, the reference signal is identified in the default reference signal resource set signal.
  • the identified reference signal can be used to recover beam failure.
  • the channel quality of the identified reference signal is greater than a preset threshold.
  • the above-mentioned predetermined threshold used for identifying the reference signal of the recovery link may be configured by the network device, or may also be a predefined threshold.
  • the threshold used for mobility measurement is used by default.
  • the predetermined threshold may be referred to as the beam failure recovery threshold, and may also be referred to as the link recovery threshold. It should be understood that any threshold used for beam failure recovery can be the predetermined threshold, and the present invention does not limit the name of the predetermined threshold.
  • the names of the reference signal resource set used for beam failure detection and the reference signal resource set used to restore the link between the terminal device and the network device may also have other names. This is not specifically limited.
  • beam failure may also be referred to as beam failure, link failure, link failure, communication failure, communication failure, communication link failure, communication link failure, and so on.
  • the communication failure may mean that the signal quality of the reference signal used for beam failure detection of the PDCCH is less than or equal to a preset threshold.
  • beam failure recovery can also be referred to as restoring the communication between the network device and the terminal device, beam failure recovery, beam failure recovery, beam recovery, link failure recovery, link failure recovery, link recovery, communication failure recovery , Communication failure recovery, communication link failure recovery, communication link failure recovery, communication recovery, link reconfiguration, etc.
  • the beam failure recovery request may also be referred to as beam failure recovery request information, beam failure recovery request information, beam recovery request information, link failure recovery request information, link failure recovery request information, link recovery request information , link recovery request information , Communication failure recovery request information, communication failure recovery request information, communication recovery request information, communication link failure recovery request information, communication link failure recovery request information, communication link recovery request information, link reconfiguration request information, reconfiguration Request information, etc.
  • the communication failure recovery request may refer to sending a signal on the resource used to carry the communication failure recovery request.
  • the beam failure recovery response may also be referred to as beam failure recovery response information, beam failure recovery response information, beam failure response information, beam failure response information, beam failure response information, beam recovery response, link failure recovery response information, link failure Recovery response information, link failure response information, link failure recovery response information, link failure Recovery response information, link failure response information, link failure response information, link failure recovery response information, link failure recovery response information, link failure recovery response information, link failure recovery response information, communication failure recovery response information, communication failure recovery response information, communication failure response information, communication failure response information, communication failure response information, communication recovery response information, communication recovery response information, link reconfiguration response information, reconfiguration response information, etc.
  • the communication failure recovery response information may be referred to as response information for short.
  • the beam failure recovery response information may refer to the reception of a cyclic redundancy check (CRC) on the control resource set and/or search space set used to send the beam failure recovery response.
  • CRC cyclic redundancy check
  • DCI downlink control information
  • C-RNTI cell radio network temporary identifier
  • the beam failure recovery response information can also be the DCI scrambled by other information (such as the BFR-RNTI scrambled DCI)
  • the beam failure recovery response information may also be data scheduled by the foregoing DCI
  • the beam failure recovery response information may also be one of the following information: DCI scrambled by the cell radio network temporary identifier C-RNTI, modulation and coding method, DCI scrambled by the cell-specific wireless network temporary identifier MCS-C-RNTI, dedicated search
  • the downlink control information DCI in the space, the DCI scrambled by the RNTI of the private wireless network temporary identifier, the DCI scrambled by the RA-RNTI of the random access wireless network temporary identifier, the DCI containing the preset state value, and the DCI containing the transmission configuration indication TCI information ,
  • the embodiment of the present application does not limit this. It should be understood that the DCI indicating the newly transmitted data and the DCI scheduling bearer beam failure request information resources have the same hybrid automatic repeat request (HARQ) process identifier. Optionally, the two DCI's new data indicator (new date indicator, NDI) is different). It should be understood that after the terminal device receives the beam failure recovery response information, it considers that the beam failure recovery is successful. It should be understood that after the beam failure recovery is successful, the terminal device may no longer send the beam failure recovery request information, it may also stop or reset the beam failure detection counter, it may also stop or reset the beam failure detection timer, and it may also stop or stop or reset the beam failure detection counter. The beam failure recovery counter is reset, and the beam failure recovery timer can also be stopped or reset.
  • HARQ hybrid automatic repeat request
  • the beam recovery failure can be understood as the terminal device no longer sending the beam failure recovery request information, it can also be understood as stopping the beam failure recovery timer (or called clock) timing, or it can be understood as stopping the beam failure recovery Counter counts, etc.
  • cell can be understood as “serving cell” and “carrier”.
  • the cell includes at least one of a downlink carrier, an uplink (UL) carrier, and an uplink supplementary (SUL) carrier.
  • a cell may include a downlink carrier and an uplink carrier; or a cell may include a downlink carrier and an uplink supplementary carrier; or a cell may include a downlink carrier, an uplink carrier, and an uplink supplementary carrier.
  • the carrier frequency of the uplink supplementary carrier is lower than that of the uplink carrier to improve uplink coverage.
  • the uplink carrier and the downlink carrier have different carrier frequencies; in the TDD system, the uplink carrier and the downlink carrier have the same carrier frequency.
  • the uplink resource is on the uplink carrier; the downlink resource is on the downlink carrier.
  • the uplink carrier may be a normal uplink carrier, or may be a supplementary uplink (SUL) carrier.
  • SUL supplementary uplink
  • the time unit may be one or more radio frames, one or more subframes, one or more time slots, and one or more mini slots defined in the LTE or 5G NR system.
  • One or more orthogonal frequency division multiplexing (OFDM) symbols, etc. may also be a time window formed by multiple frames or subframes, such as a system information (SI) window.
  • SI system information
  • the smallest time scheduling unit is a transmission time interval (TTI) with a time length of 1 ms.
  • TTI transmission time interval
  • 5G supports not only the time-domain scheduling granularity of the time unit level, but also the time-domain scheduling granularity of the micro-time unit, as well as meeting the delay requirements of different services.
  • the time unit is mainly used for eMBB services
  • the micro time unit is mainly used for URLLC services. It should be noted that the above-mentioned time unit and micro-time unit are general terms.
  • a specific example can be that the time unit can be called a time slot, and the micro-time unit can be called a mini-slot, non-slot (non-slot -based) or mini-slot; or, the time unit can be called a subframe, and the micro time unit can be called a micro subframe; other similar time domain resource division methods are not limited.
  • the first time unit mentioned in this application may refer to a time slot or a mini time slot.
  • a time slot may include, for example, 14 time domain symbols, and a mini-slot may include less than 14, such as 2, 3, 4, 5, 6, or 7, etc.; or, for example, a time slot may include There are 7 time-domain symbols.
  • the number of time-domain symbols included in a mini-slot is less than 7, such as 2 or 4, and the specific value is not limited.
  • the time domain symbols here may be OFDM symbols.
  • kilohertz kilohertz
  • the corresponding time length is 0.5 ms; for a time slot with a sub-carrier spacing of 60 kHz, the corresponding time The length is shortened to 0.125ms.
  • the beam failure case counter may also be referred to as a beam failure case indication counter, and may also be referred to as a beam failure detection counter.
  • the reference signal information may include the reference signal resource index and/or the channel quality of the reference signal.
  • channel quality may include one or more of the following: reference signal receiving power (RSRP), signal to interference plus noise ratio (SINR), reference signal receiving quality (reference signal) Receiving quality, RSRQ), channel quality indication (CQI), or signal-to-noise ratio (signal noise ratio, SNR), etc.
  • Communication systems usually use different types of reference signals: one type of reference signal is used to estimate the channel, so that the received signal containing control information or data can be coherently demodulated; the other type is used to measure the channel state or channel quality to achieve Scheduling of terminal equipment.
  • the terminal equipment obtains the channel state information CSI based on the channel quality measurement of the CSI-RS.
  • the CSI includes at least one of a rank indicator (Rank Indicator, RI), a precoding indicator (Precoding Matrix Indicator, PMI), and a channel quality indicator (Channel Quality Indicator, CQI).
  • RI rank Indicator
  • PMI Precoding Matrix Indicator
  • CQI Channel Quality Indicator
  • modern communication systems usually use multi-antenna technology to increase system capacity and coverage or improve user experience.
  • Another advantage of using high-frequency bands is that the size of multi-antenna configurations can be greatly reduced, thereby facilitating site location. Acquire and deploy more antennas.
  • the high-frequency frequency band will cause greater path loss, especially the influence of factors such as the atmosphere and vegetation further aggravate the loss of wireless propagation.
  • the beamformed signals may include broadcast signals, synchronization signals, and cell-specific reference signals.
  • the direction of the shaped beam corresponding to the transmitted signal may no longer match the position of the user after the movement, so that the received signal is frequently interrupted.
  • a channel quality measurement and result report based on beamforming technology is introduced.
  • the measurement of the channel quality may be based on a synchronization signal or a cell-specific reference signal after beamforming. Compared with cell handover, user handover between different shaped beams is more dynamic and frequent, so a dynamic measurement reporting mechanism is needed.
  • the report of the channel quality result of the shaped beam may also be sent by the terminal device to the network device through PUCCH or PUSCH.
  • the terminal device selects the better N beams by measuring multiple beams sent by the network device, and reports the better N beam measurement information to the network device.
  • the beam measurement information mainly includes reference signal resource index and reference signal quality information.
  • the reference signal quality information can be reference signal received power (L1-reference signal received power, L1-RSRP), reference signal signal to interference plus noise ratio (L1-signal to interference plus noise ratio, L1-SINR), reference signal signal At least one of the channel quality information of the reference signal, such as the signal to interference plus noise ratio (SINR) or the channel quality indication (CQI) of the reference signal.
  • both the network equipment’s transmitting beam and the terminal’s receiving beam may change dynamically.
  • the terminal equipment may determine the better receiving beam based on the received signal.
  • the information of the multiple receiving beams is fed back to the network device, and the network device can instruct the terminal device to receive the beam by sending beam indication information to the terminal device.
  • the terminal device adopts beamforming in the analog domain, the terminal device can accurately determine the terminal receiving beam based on the beam indication information sent by the network device, thereby saving the beam scanning time of the terminal device and achieving the effect of power saving.
  • the network device can indicate the reception parameters adopted by the terminal device by configuring the QCL information of the PDCCH.
  • the method for configuring the QCL information of the PDCCH is as follows: RRC configures K candidate QCL information of the PDCCH, such as K TCI states; MAC-CE indicates the QCL information of the PDCCH (when K>1).
  • the protocol stipulates that the terminal equipment can assume that the DMRS of PDCCH and PDSCH and the SSB determined during initial access are QCL before the network equipment does not send RRC and MAC-CE.
  • the terminal device may measure the communication quality of the reference signal of the beam failure detection configured by the network device to determine whether a beam failure occurs.
  • Fig. 1 shows a schematic flowchart of a beam failure recovery process in the prior art. As shown in Fig. 1, the beam failure recovery process includes:
  • the terminal device measures a reference signal resource set (beam failure detection RS set) for beam failure detection, and determines that the beam between the terminal device and the network device has failed.
  • a reference signal resource set beam failure detection RS set
  • the terminal device when the terminal device determines that the channel quality information of all or part of the reference signals in the beam failure detection reference signal or the beam failure detection reference signal resource set is less than or equal to the beam failure detection threshold, the terminal device can determine The beam between the terminal device and the network device fails. Specifically, there can be the following steps:
  • the terminal device measures the channel quality of the reference signal in the beam failure detection reference signal resource set (also referred to as "signal quality").
  • the reference signal in the beam failure detection reference signal resource set may be referred to as q0.
  • the physical (PHY) layer of the terminal device will report to the media access control (MAC) layer Indication of beam failure case.
  • the reporting period of the beam failure case is a period for the physical (PHY) layer to report the beam failure case indication information to the media access control (media access control, MAC) layer.
  • PHY physical
  • MAC media access control
  • the reference signal resource in q0 and the CORESET/PDCCH of the SCell configuring the reference signal satisfy the QCL relationship (the beam failure detection reference signal resource and CORESET may have a one-to-one relationship, or a many-to-one relationship, or It is a one-to-many relationship).
  • the DMRS of the reference signal and the PDCCH in the beam failure detection reference signal resource set meets a quasi co-location (QCL) relationship or has the same TCI state as the PDCCH.
  • QCL quasi co-location
  • the terminal device determines that the current SCell has beam failure.
  • N is configured by a beam failure detection parameter (which may be a beamFailureInstanceMaxCount parameter configured by RRC signaling or MAC-CE signaling).
  • a beam failure detection parameter which may be a beamFailureInstanceMaxCount parameter configured by RRC signaling or MAC-CE signaling.
  • the beam failure detection timer in the beam failure detection parameters (which can be the beamFailureDetectionTimer parameter configured by RRC signaling or MAC-CE signaling).
  • the reporting period of the beam failure case is the period of the reference signal with the smallest period in q0 and the largest value in 2ms.
  • the length of the beam failure detection timer is an integer multiple of the reporting period of the beam failure case.
  • the terminal device maintains a beam failure event counter (referred to as BFI-COUNTER for short), and the initial value of the beam failure event counter is 0. If the MAC layer of the terminal device receives the beam failure instance indication sent by the PHY layer, the terminal device will start or restart the beam failure detection timer, and increase the BFI-COUNTER by one. When the BFI-COUNTER count value is greater than or equal to N, it is determined that the SCell has beam failure.
  • BFI-COUNTER a beam failure event counter
  • the beam failure detection timer expires, or high-level signaling reconfigures any of the beam failure detection parameters, set the BFI-COUNTER to 0. If the beam failure is restored successfully, the BFI-COUNTER is also set to 0, and the beam failure detection timer is stopped.
  • the manner in which the terminal device determines that the beam failed on a certain carrier between the terminal device and the network device is not limited to the above examples, and may also be determined by other judgment methods, which is not limited in this application. .
  • the terminal device determines that the beam with the network device on a certain carrier fails, it can be understood that the terminal device determines that the link with the network device on a certain carrier fails.
  • the terminal device recognizes the new link.
  • the terminal device can measure the reference signal in a certain reference signal resource set, and identify the reference signal used to restore the link between the terminal device and the network device.
  • the channel quality of the reference signal used to restore the link between the terminal device and the network device needs to be greater than or equal to the beam failure recovery threshold.
  • the reference signal may be referred to as the first reference signal or new beam for short.
  • the first reference signal may be one reference signal or may also be multiple reference signals.
  • the multiple reference signals can be used to restore the link of the carrier. Each of the multiple reference signals may be used to recover the carrier on which the reference signal is configured. Alternatively, the multiple reference signals may be used to restore the component carriers on which the multiple reference signals are configured.
  • the terminal device can identify reference signals in a candidate reference signal resource set (candidate beam identification RS set).
  • the terminal device can restore the link based on the reference signal.
  • the channel quality of the identified reference signal is greater than or equal to a beam failure recovery threshold.
  • the process of a terminal device identifying a reference signal can be understood as the terminal device determining a reference signal resource with a channel quality greater than or equal to the beam failure recovery threshold in the candidate reference signal resource set (may be referred to as new identified beam or new beam); the determination process here It may be determined by measuring the channel quality information of the candidate reference signal resource set.
  • the terminal device cannot identify a reference signal resource (new identified beam) whose channel quality is greater than or equal to the beam failure recovery threshold. In another possible situation, the terminal device does not perform step S102.
  • the network device configures or instructs the PUSCH resource for the terminal device.
  • the terminal device receives the configuration or the information indicating the PUSCH resource sent by the network device.
  • the PUSCH resource configured by the network device for the terminal device is referred to as the second resource for short.
  • the specific indication mode of the second resource may have one or more of the following modes:
  • the terminal device sends the first request information to request the second resource.
  • the second resource may be the PUSCH resource indicated by the network device through the uplink grant (or DCI).
  • the uplink grant (or DCI) may be DCI in which the CRC is scrambled by C-RNTI/MCS-C-RNTI.
  • the first request information indicates a beam failure event, which is carried on a PUCCH resource or a PRACH resource.
  • the first request information may be used to request uplink resources, which is carried on PUCCH resources or PRACH resources.
  • the first request information may also be referred to as scheduling request information.
  • the terminal device sending the first request information may be executed after step S101 and executed before step S104.
  • the terminal device sends the first request information.
  • the first request information may also be referred to as scheduling request information or the first request information and the scheduling request information use the same format.
  • the first request information may be used to request a resource for carrying the second request information (referred to as the second resource for short).
  • the second resource may be indicated or activated by the response information of the first request information.
  • the network device may also send response information of the first request information.
  • the response information of the first request information may be used to indicate the second resource allocated for the terminal, that is, the network device allocates resources for the terminal.
  • the second resource may be an aperiodic resource (or called a dynamic resource).
  • the network device determines whether to allocate the second resource according to whether there is a cell with a beam failure in the current network (indicated by the first request information), If the network device receives the first request information, it can learn that there are cells in the current network that have beam failures, and the network device can dynamically allocate second resources so that the terminal device can further report which cells have beam failures, and/or, Report the new link information of the cell where the beam failed to be restored. Since the beam failure event is an emergency, this method does not need to reserve periodic resources for sending the beam failure recovery request information in advance, which can effectively save resource overhead.
  • the response information of the first request information can also be used to activate a second resource, that is, a second resource originally allocated for the terminal.
  • the activation is triggered by the response information of the first request information.
  • the second resource is semi-persistent or periodic.
  • the second resource can be a semi-static resource or a static resource (such as PUSCH, PUCCH, or physical random access channel) activated by the response information of the first request information or the DCI signaling after the first request information. (physical random access channel, PRACH)).
  • the network device determines whether to activate the second resource according to whether there is a cell with a link failure in the current network (indicated by the first request information), and if the network device receives the first request information, it can learn about the current network There are cells in which beam failure occurs, and the network device activates the second resource, so that the terminal device can further report which cells have beam failure, and/or report new link information of the cell where the link failed to be restored.
  • the second resource may be configured by higher layer signaling or system information, or may be a preset resource.
  • the second resource may be configured by the network device for the terminal, and sent to the terminal through high-level signaling or system information.
  • the second resource may also be pre-appointed by the network device and the terminal device, or set in advance by the terminal, which is not limited in this application.
  • the second resource may also be a resource that has an association relationship with a resource used to carry the first request information.
  • the second resource may have a mapping relationship with the resource used to carry the first request information, so that the terminal can determine the second resource when it learns the resource used to carry the first request information.
  • the association between the resource used to carry the first request information and the second resource may be configured by system information such as master information block (MIB) or system information block (SIB), or It is configured by radio resource control (radio resource control, RRC) or media access control (media access control, MAC)-control element (CE) signaling.
  • the system information or signaling may be sent before sending the first request information.
  • the configuration of the resource used to carry the first request information and the second resource may also be configured through the foregoing system information or signaling. This method can no longer send the second request information through the resource allocated by the response information of the first request information, but directly send the second request information on the second resource, which can effectively reduce the beam recovery time delay and improve the beam recovery speed.
  • the network device can configure multiple resources for the terminal device to transmit the first request information, and configure multiple resources for the terminal device to transmit the second request information, and the terminal device can use the multiple resources for transmitting the second request information.
  • One or more resources are selected from a resource for requesting information to send the first request information, and one or more resources for transmitting the second request information may also be selected as the second resource.
  • the plurality of resources for transmitting the first request information and the plurality of resources for transmitting the second request information may be configured by the aforementioned system information such as MIB or SIB, or configured by signaling such as RRC or MAC-CE. .
  • the second resource may also be a resource associated with the first request information.
  • the network device can be configured through system information such as MIB or SIB, or through RRC or MAC-CE signaling, multiple resources for sending the first request information and multiple resources for sending the second request information, And the association relationship between the plurality of resources used to send the first request information and the plurality of resources used to send the second request information, the terminal may select one of the plurality of resources used to transmit the first request information to send the first request Information, one can also be selected as the second resource from a plurality of resources used to transmit the second request information.
  • Each resource used for transmitting the first request information may be associated with one or more second resources, and each resource used for transmitting the first request information may be associated with a different size of the second resource.
  • the terminal device sends the first request information on the second resource associated with the resource that sent the first request information.
  • the second resource may be a PUSCH resource or may be a PUCCH resource.
  • the second request information of the embodiment may be MAC-CE indicating cell information of the cell where the beam failed.
  • the response information of the first request information may be DCI information.
  • the second request information may include the identification information of the beam-failed cell and/or the reference signal information of the restored beam-failed cell.
  • the cell information of the beam-failed cell may include the identification information of the beam-failed cell and/or the reference signal information of the restored beam-failed cell.
  • the reference signal information of the cell where the beam recovery failed may be the index of the reference signal resource, and/or the channel quality information of the reference signal resource (such as one or more of the following RSRP, SINR, RSRQ, CQI, etc.).
  • the second resource may also be the PUSCH resource directly indicated by the network device through the uplink grant (or DCI).
  • the uplink grant (or DCI) may be DCI in which the CRC is scrambled by C-RNTI/MCS-C-RNTI.
  • the second resource may be a resource dynamically allocated by a network device. This method does not need to reserve periodic resources in advance, and can effectively save resource overhead.
  • the second resource may be a semi-persistent or periodic resource activated by the network device through RRC, MAC-CE, or DCI.
  • the second resource may be a physical uplink shared channel (PUSCH), a physical uplink control channel (PUCCH), or a physical random access channel (PRACH).
  • PUSCH physical uplink shared channel
  • PUCCH physical uplink control channel
  • PRACH physical random access channel
  • the second resource may be configured by configuration information or be a preset resource.
  • the second resource may be configured by the network device for the terminal, and sent to the terminal through high-level signaling or system information.
  • the second resource may also be pre-appointed by the network device and the terminal device, or set in advance by the terminal, which is not limited in this application.
  • the configuration information can be configured by system information such as master information block (MIB) or system information block (system information block, SIB), or by radio resource control (RRC) or media access Control (media access control, MAC)-control element (CE) signaling configuration.
  • system information such as master information block (MIB) or system information block (system information block, SIB), or by radio resource control (RRC) or media access Control (media access control, MAC)-control element (CE) signaling configuration.
  • RRC radio resource control
  • CE media access Control
  • the configuration information may be configured by configured grant.
  • the second resource may be a PUSCH resource associated with PRACH or PUCCH.
  • the second resource may be the PUSCH resource in 2step PRACH.
  • the network device configures PRACH resources and PUSCH resources that have an association relationship, and the PUSCH resources do not require DCI indication.
  • the terminal device selects a PRACH resource to initiate a random access process, and sends other information (such as UE ID, etc.) on the PUSCH resource associated with the PRACH resource.
  • the PRACH resource or PUCCH resource is a resource that carries the first request information. The first request information is as described in Mode 1, and will not be repeated here.
  • the configuration information indicating the second resource by the network device may be sent in advance, and the configuration information may be sent by the network device to the terminal device before the terminal device determines that the beam fails, then the terminal device After the beam failure is found, the beam failure recovery request information is directly sent on the resource without waiting for the network device to allocate the PUSCH resource.
  • the terminal device can obtain one or more second resources through any one or more of the foregoing manners 1 to 5.
  • the terminal device sends a beam failure recovery request to the network device.
  • the beam failure recovery request is associated with a reference signal (new identified beam or new beam) whose channel quality identified in S102 is greater than or equal to the beam failure recovery threshold, and the terminal device can display the new identified beam or refer to it in an explicit or implicit manner.
  • the signal resource is notified to the network device.
  • the terminal device may display and report the resource index or resource identifier of the newly identified reference signal to the network device.
  • the network device configures the association relationship between multiple uplink resources for sending BFRQ information and multiple candidate reference signal resources in advance, and the terminal device implicitly indicates the newly identified reference signal resource by selecting the uplink resource for sending BFRQ.
  • the terminal device may also report at least one of the new beam (new beam) information, the cell identifier of the beam failure, and the like through one or more beam failure recovery request information. It can also be understood that the BFRQ indicates one or more of the new beam information, the cell identifier of the beam failure, and the beam failure event.
  • the terminal device can send a BFRQ to the network device, and through the network device, the beam failure between the terminal device and the network device can be restored, or the terminal device can send a BFRQ to another network device. BFRQ, restoring the beam failure between the terminal device and the network device through the other network device.
  • the BFRQ information of the PCell in the NR can be reported through PRACH resources.
  • the base station configures one or more PRACH resources, and configures each PRACH resource to be associated with a reference signal, and the reference signal is a reference signal used to recover the link failure.
  • the reference signal may be a reference signal in a candidate reference signal resource set configured by the base station.
  • the terminal device confirms that the beam fails, recognizes the new beam, and selects the PRACH resource associated with the new beam to send a signal. In this way, the terminal device can implicitly indicate the new beam information.
  • the uplink resource set configured by the network device for the first cell and used to send the beam failure request information of the first cell is called the first uplink resource set.
  • the number of physical random access channel (PRACH) resources included in the first uplink resource set is equal to the number of downlink reference signals in the candidate reference signal resource set of the first cell, that is, one PRACH resource and one The downlink reference signal is associated.
  • the terminal device identifies the reference signal that is greater than or equal to the beam failure recovery threshold in the candidate reference signal resource set, and sends the beam failure recovery request information on the PRACH resource associated with the reference signal.
  • the transmission beam when the terminal device sends information on a PRACH resource is the transmission beam corresponding to the reception beam of the downlink reference signal associated with the PRACH resource, that is, the terminal device can use the The transmitting beam corresponding to the receiving beam sends information on the PRACH resource.
  • a PRACH resource is associated with a downlink reference signal and an uplink reference signal, and the terminal device can be based on the determined downlink reference signal. The associated PRACH resource, and then the uplink reference signal associated with the PRACH resource is determined, so that the transmission beam of the uplink reference signal is used to send information on the PRACH resource.
  • the BFRQ information of the SCell in the NR can be reported in one step.
  • the BFRQ information can be carried on the PUSCH resource; it can also be carried on the PUCCH resource; where the BFRQ information can indicate the identity of the cell where the beam failed, and/or new beam information.
  • BFRQ information can also be reported in two steps, BFRQ1+BFRQ2.
  • BFRQ1 can be carried on PUCCH resources or PRACH resources
  • BFRQ2 can be carried on PUSCH resources or PUCCH resources.
  • BFRQ1 indicates the beam failure event
  • BFRQ2 indicates the cell identity and/or new beam information of the beam failure.
  • BFRQ1 indicates the beam failure event and/or the cell identifier of the beam failure
  • BFRQ2 indicates new beam information.
  • the above-mentioned BFRQ information is carried on the PUSCH resource, which can be understood as reporting the BFRQ information through the MAC-CE.
  • the media access control (MAC) layer of the terminal device maintains a beam failure recovery timer (beam failure recovery timer) and a beam failure recovery counter (beam failure recovery counter).
  • the beam failure recovery timer is used to control the entire beam failure recovery time
  • the beam failure recovery counter is used to limit the number of times the terminal device sends beam failure recovery requests.
  • the beam failure recovery counter reaches the maximum value, the terminal device considers that the beam failure recovery is unsuccessful and stops the beam failure recovery process.
  • the recovery time of the recovery timer and the count value of the recovery counter may be configured by the network device, or may be preset values.
  • S106 The network device receives the beam failure recovery request sent by the terminal device.
  • the network device may also send a beam failure recovery response to the terminal device, and the terminal device receives the beam failure recovery response, that is, S107 and S108 are executed.
  • the terminal device can detect the C-RNTI scrambled or MCS-C-RNTI scrambled DCI in the control resource set (CORESET) and the search space set (search space set) as the BFRR.
  • CORESET control resource set
  • search space set search space set
  • the CORESET and/or search space set may be a dedicated CORESET and/or search space set configured by the network device for the terminal device, which is used for the network device to send a request for beam failure recovery after the terminal device sends a beam failure request.
  • the downlink control resource of the response message may be a dedicated CORESET and/or search space set configured by the network device for the terminal device, which is used for the network device to send a request for beam failure recovery after the terminal device sends a beam failure request.
  • the time sequence of S101 and S102 in the beam failure recovery process is not limited, and it may be S102 before S101, S101 before S102, or S102 and S101 simultaneously. It should also be understood that S107 and S108 are optional steps.
  • the terminal device When the terminal device determines that the beam fails, it sends the MAC-CE used to carry the beam failure recovery request information to the network device on any PUSCH. If the MAC-CE used to carry the beam failure recovery request information can be transmitted on any PUSCH, it may be As a result, the reliability of one-time transmission of the MAC-CE is low, and retransmission is required to ensure the success of the MAC-CE transmission, which causes an increase in the delay of beam failure recovery.
  • a certain PUSCH resource is scheduled by a certain uplink grant (ul grant)
  • ul grant uplink grant
  • the code rate indicated by the ul grant is higher, then the BFRQ transmission accuracy rate is low, and retransmission is needed to improve the reliability of BFRQ transmission. , Increase the delay of beam failure recovery.
  • an embodiment of the present application provides a method for sending a beam failure recovery request.
  • the method includes: selecting a specific PUSCH resource, and sending at least one beam failure recovery request on the PUSCH resource. Or, send at least two beam failure recovery requests on any PUSCH resource. Therefore, by limiting the PUSCH resource for BFRQ transmission or by sending multiple identical BFRQs, the transmission reliability is improved, and the beam failure recovery time delay is reduced.
  • GSM global system of mobile communication
  • CDMA code division multiple access
  • WCDMA broadband code division multiple access
  • GPRS general packet radio service
  • LTE LTE system
  • FDD frequency division duplex
  • UMTS universal mobile telecommunication system
  • WiMAX worldwide interoperability for microwave access
  • 5G mobile communication system described in this application includes a non-standalone (NSA) 5G mobile communication system and/or a standalone (SA) 5G mobile communication system .
  • the technical solution provided in this application can also be applied to future communication systems, such as the sixth-generation mobile communication system.
  • the communication system may also be a PLMN network, a device-to-device (D2D) network, a machine-to-machine (M2M) network, an IoT network or other networks.
  • D2D device-to-device
  • M2M machine-to-machine
  • Fig. 2 is a schematic diagram of the architecture of a communication system applied in an embodiment of the present application.
  • the communication system 200 includes a network device 210 and a terminal device 220.
  • the terminal device 220 is connected to the network device 210 in a wireless manner.
  • FIG. 2 is only a schematic diagram.
  • the communication system may also include other devices, such as core network devices, wireless relay devices, and wireless backhaul devices, which are not shown in FIG. 2.
  • the core network equipment and the network equipment can be separate and different physical equipment, or they can integrate the functions of the core network equipment and the logical functions of the network equipment on the same physical equipment, or it can be a physical equipment that integrates part of the core network.
  • the terminal device can be a fixed location, or it can be movable.
  • the embodiment of the present application does not limit the number of terminal equipment, core network equipment, radio access network equipment, and terminal equipment included in the communication system.
  • the communication system 200 is in a single carrier scenario or carrier aggregation (CA) scenario.
  • the communication system 200 includes a network device 210 and a terminal device 220.
  • the network device 210 and the terminal device 220 communicate through a wireless network.
  • the terminal device 220 After detecting the failure of the link between the network device 210 and the terminal device 220, the terminal device 220 sends a BFRQ to the network device 210.
  • the network device 210 sends a beam failure recovery response (BFRR) or reconfigures the link to the terminal device 220.
  • BFRR beam failure recovery response
  • the network device 210 in FIG. 2 may include one or more cells.
  • the first cell can assist the second cell in link recovery.
  • the terminal device can be The BFRQ information is sent to the network device on the uplink resource belonging to the first cell, and the terminal device may receive the BFRR information sent by the network device on the downlink resource belonging to the second cell.
  • the terminal device 220 When the transmission direction of the communication system 200 is uplink transmission, the terminal device 220 is the sending end and the network device 210 is the receiving end. When the transmission direction of the communication system 200 is downlink transmission, the network device 210 is the sending end and the terminal device 220 is the receiving end. end.
  • FIG. 3 is a communication system 300 applicable to this application.
  • the communication system 300 is in a scenario of dual connectivity (DC) or coordinated multipoint transmission/reception (CoMP).
  • the communication system 300 includes a network device 310, a network device 320, and a terminal device 330.
  • the network device 310 is the network device when the terminal device 330 initially accesses, and is responsible for the RRC communication with the terminal device 330.
  • the network device 320 is added during the RRC reconfiguration to provide additional wireless resources.
  • the terminal device 330 configured with carrier aggregation is connected to the network device 310 and the network device 320.
  • the link between the network device 310 and the terminal device 330 may be called the first link.
  • the link between the network device 320 and the terminal device 330 The link can be called the second link.
  • the terminal device 330 can be used for transmitting BFRQ in the uplink.
  • the resource sends a BFRQ to the network device 310 or the network device 320, and after receiving the BFRQ, the network device 310 or the network device 320 sends a BFRR to the terminal device 330.
  • the terminal device 330 can restore the second link through the network device 310.
  • the above-mentioned communication system applicable to this application is only an example, and the communication system applicable to this application is not limited to this.
  • the number of network equipment and terminal equipment included in the communication system may also be other numbers, or a single base station or multiple carriers may be used.
  • the technical solutions in the embodiments of the present application may be applicable to situations where the primary cell (Pcell) is high frequency or low frequency, and the secondary cell (Scell) is high frequency or low frequency.
  • Pcell primary cell
  • Scell secondary cell
  • the uplink resources of the Pcell can be used to assist the Scell in restoring the link.
  • low frequency and high frequency are relative terms, but also can be divided by a certain frequency, such as 6GHz.
  • the technical solutions of the embodiments of the present application can also be applied to coordinated multipoint transmission/reception (CoMP) scenarios, where one TRP assists another TRP to restore the link.
  • the CoMP can be one or more scenarios of non-coherent joint transmission (NCJT), coherent joint transmission (CJT), and joint transmission (JT).
  • NCJT non-coherent joint transmission
  • CJT coherent joint transmission
  • JT joint transmission
  • the terminal equipment in the embodiments of this application may refer to user equipment, access terminals, user units, user stations, mobile stations, mobile stations, remote stations, remote terminals, mobile equipment, user terminals, terminals, wireless communication equipment, user agents, or User device.
  • the terminal equipment can also be a cellular phone, a cordless phone, a session initiation protocol (session initiation protocol, SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (personal digital assistant, PDA), with wireless communication Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in the future 5G network, or future evolution of the public land mobile network (PLMN) Terminal equipment, etc., which are not limited in the embodiment of the present application.
  • PLMN public land mobile network
  • the terminal device may also be a wearable device.
  • Wearable devices can also be called wearable smart devices. It is a general term for using wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes.
  • a wearable device is a portable device that is directly worn on the body or integrated into the user's clothes or accessories. Wearable devices are not only a kind of hardware device, but also realize powerful functions through software support, data interaction, and cloud interaction.
  • wearable smart devices include full-featured, large-sized, complete or partial functions that can be achieved without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, and need to cooperate with other devices such as smart phones.
  • the terminal device may also be a terminal device in the Internet of Things (IoT) system.
  • IoT Internet of Things
  • Its main technical feature is to pass items through communication technology. Connect with the network to realize the intelligent network of human-machine interconnection and interconnection of things.
  • the IOT technology can achieve massive connections, deep coverage, and power saving of the terminal through, for example, narrowband NB technology.
  • the terminal equipment may also include sensors such as smart printers, train detectors, gas stations, etc.
  • the main functions include collecting data (part of the terminal equipment), receiving control information and downlink data from network equipment, and sending electromagnetic waves. , To transmit uplink data to network equipment.
  • the network device in the embodiment of the application may be a device used to communicate with terminal devices.
  • the network device may be a global system for mobile communications (GSM) system or code division multiple access (CDMA)
  • GSM global system for mobile communications
  • CDMA code division multiple access
  • the base transceiver station (BTS) in the LTE system can also be the base station (NodeB, NB) in the wideband code division multiple access (WCDMA) system, or the evolved base station (evolved) in the LTE system.
  • NodeB, NB base station
  • WCDMA wideband code division multiple access
  • evolved evolved base station
  • NodeB, eNB, or eNodeB it can also be a wireless controller in a cloud radio access network (CRAN) scenario, or the network device can be a relay station, access point, in-vehicle device, wearable device, and future
  • the network equipment in the 5G network or the network equipment in the future evolved PLMN network, etc., are not limited in the embodiment of the present application.
  • the network device in the embodiment of the present application may be a device in a wireless network, for example, a radio access network (RAN) node that connects a terminal to the wireless network.
  • RAN nodes are: base station, next-generation base station gNB, transmission reception point (TRP), evolved Node B (evolved Node B, eNB), home base station, baseband unit (BBU) , Or the access point (AP) in the WiFi system.
  • the network device may include a centralized unit (CU) node, or a distributed unit (DU) node, or a RAN device including a CU node and a DU node.
  • CU centralized unit
  • DU distributed unit
  • FIG. 4 is an example diagram of a communication system provided by an embodiment of this application. As shown in Figure 3, the base station and the terminal equipment 1 to the terminal equipment 6 form a communication system. In this communication system, the terminal equipment 1-terminal equipment 6 can send uplink data to the base station, and the base station receives the uplink data sent by the terminal equipment 1-terminal equipment 6.
  • the base station may also send downlink data to terminal equipment 1-terminal equipment 6, and terminal equipment 1-terminal equipment 6 receive the downlink data.
  • the terminal device 4 to the terminal device 6 may also form a communication system.
  • the terminal device 5 can receive the uplink information sent by the terminal device 4 or the terminal device 6 and the downlink information sent by the terminal device 5 to the terminal device 4 or the terminal device 6.
  • Network equipment and terminal equipment can be deployed on land, including indoor or outdoor, handheld or vehicle-mounted; they can also be deployed on water; they can also be deployed on airborne aircraft, balloons, and satellites.
  • the embodiments of the present application do not limit the application scenarios of network equipment and terminal equipment.
  • the network equipment and the terminal equipment can communicate through a licensed spectrum, or communicate through an unlicensed spectrum, or communicate through a licensed spectrum and an unlicensed spectrum at the same time.
  • Network equipment and terminal equipment can communicate through a frequency spectrum below 6 GHz (gigahertz, GHz), communicate through a frequency spectrum above 6 GHz, and communicate using a frequency spectrum below 6 GHz and a frequency spectrum above 6 GHz at the same time.
  • the embodiment of the present application does not limit the spectrum resource used between the network device and the terminal device.
  • the time-domain symbols may be orthogonal frequency division multiplexing (OFDM) symbols, or single carrier-frequency division multiplexing (SC-FDM) symbols. symbol. Unless otherwise specified, the symbols in the embodiments of the present application refer to time-domain symbols.
  • OFDM orthogonal frequency division multiplexing
  • SC-FDM single carrier-frequency division multiplexing
  • PDSCH, PDCCH, and PUSCH are just examples of downlink data channels, downlink control channels, and uplink data channels.
  • data channels and control channels may be used as examples.
  • FIG. 5 is a flowchart of a method for sending a beam failure recovery request provided by an embodiment of the application. As shown in Figure 5, the method may include:
  • S501 The terminal device determines the first resource.
  • the terminal device After the terminal device determines that the beam fails, it needs to send a beam failure recovery request to the network device. In some embodiments, the terminal device first determines the first resource used to send the beam failure recovery request, and then sends the beam failure recovery request on the first resource, thereby reducing the beam failure recovery time delay by limiting the PUSCH resource for BFRQ transmission .
  • the terminal device may determine the first resource in any one of the following methods S501a to S501d.
  • the terminal device determines the first resource according to the beam failure case counter.
  • the network device may configure beam failure detection parameters for the cell to which the terminal device belongs through RRC signaling or MAC-CE signaling.
  • the beam failure detection parameters include the maximum number of beam failure instances (beamFailureInstanceMaxCount).
  • the terminal device maintains a beam failure instance counter (BFI counter) for a cell or a cell group to realize beam failure detection. When the BFI counter is 0, it means that there is no beam failure in the cell or cell group, and the link quality of the cell or cell group is good. Therefore, the terminal device can select the resource of the cell whose beam failure case counter is 0 and determine it as The first resource.
  • BFI counter beam failure instance counter
  • a cell group may include one or more cells.
  • the cell group may refer to MCG or SCG.
  • the cell group may also be configured by a network device, or may be indicated or determined in other ways.
  • the cell group may also have other definitions or indication methods, and the embodiment of the present application does not limit the definition or indication method of the cell group.
  • the terminal device determines the first resource according to the subcarrier interval.
  • the terminal device may receive one or more indication information sent by the network device, where the one or more indication information is used to indicate K resources, and the K resources may be PUSCH resources.
  • the network device configures K resources for the terminal device in advance.
  • K is an integer, and K ⁇ 1.
  • the resource may refer to orthogonal frequency division multiplexing (OFDM) symbols on a time unit.
  • the time unit may refer to time slots, sub-slots, mini-slots, and so on.
  • the K resources may be frequency division multiplexed resources, or may be time division multiplexed resources, or may be code division multiplexed resources.
  • the terminal device may select the resource with the largest subcarrier interval among the subcarrier intervals of K resources to be determined as the first resource, so as to complete the transmission of the beam failure request faster.
  • the terminal device may determine the first resource according to the subcarrier interval, where the subcarrier interval of the first resource is the largest among the subcarrier intervals of the K resources.
  • the terminal device determines the first resource according to the subcarrier interval, and the subcarrier interval of the component carrier to which the first resource belongs is the largest among the subcarrier intervals of the component carriers to which the K resources belong.
  • the terminal device determines the first resource according to the subcarrier interval, and the subcarrier interval of the cell to which the first resource belongs is the largest among the subcarrier intervals of the cells to which the K resources belong.
  • the terminal device determines the first resource according to the repeated identifier.
  • the network device configures the terminal device with a resource carrying a repeated identifier through RRC signaling, MAC-CE signaling, or DCI signaling.
  • the terminal device may determine the resource carrying the repeated identifier as the first resource.
  • the repeated identifier indicates that the resource can be used to repeatedly transmit multiple pieces of the same information.
  • the transmission reliability of the resource carrying the repeated identification is high, or the resource carrying the repeated identification can be used for the transmission of the URLLC service, and the resources allocated for the service need to ensure high-reliability and low-latency transmission. Therefore, transmitting the beam failure request on the resource carrying the repeated identifier can ensure the reliability of the transmission of the beam failure request, complete the beam failure recovery in time, and reduce the beam failure recovery time delay.
  • the resource carrying the repeated identification can also be described as a resource configured with a repeated identification or a resource configured with a repeated identification parameter. Repeated identification can also be referred to as "aggregation factor”.
  • the terminal device may determine the first resource according to an aggregation factor (Aggregation Factor), and the first resource is configured with an aggregation factor.
  • the aggregation factor indicates the number of repetitions of data or information carried by the PUSCH resource. Understandably, the number of repetitions is generally greater than one.
  • the terminal device determines the first resource according to the modulation and coding scheme.
  • the network device configures L resources for the terminal device through RRC signaling, MAC-CE signaling, or DCI signaling, and also indicates the corresponding modulation and coding mode for the L resources, L is an integer, and L ⁇ 1 .
  • the terminal device may select the resource of the smallest modulation and coding scheme among the modulation and coding schemes corresponding to the L resources and determine it as the first resource. Due to the smaller modulation and coding method, low-order modulation and low-rate channel coding schemes will be used to ensure communication quality. By selecting a smaller modulation and coding method, the transmission reliability of the beam failure recovery request can be ensured, thereby avoiding beam failure The retransmission of the recovery request reduces the delay of beam failure recovery.
  • the modulation and coding scheme corresponding to the first resource may refer to the modulation and coding scheme indicated by the indication information of the first resource.
  • the "modulation and coding mode" in the embodiment of the present application can also be replaced with “modulation order”, and can also be replaced with "code rate”.
  • S501a and S501b can be used in combination.
  • the terminal device selects more than two resources of a cell with a beam failure case counter of 0.
  • the terminal device may select the resource with the largest subcarrier interval among resources of a cell with a beam failure case counter of 0 as the first resource.
  • S501a and S501c can be used in combination.
  • the terminal device selects two or more resources of a cell with a beam failure case counter of 0.
  • the terminal device may select a resource configured with an aggregation factor among resources of a cell with a beam failure case counter of 0 as the first resource.
  • S501a and S501d can be used in combination.
  • the terminal device selects the resources of more than two cells with a beam failure case counter of 0.
  • the terminal device can select the resource with the smallest modulation and coding scheme among the resources of the cell with a beam failure case counter of 0 as the first resource. Resources.
  • any two or any three of S501a, S501b, S501c, and S501d can be used in combination or these four can be used in combination.
  • it is necessary to define which rule is preferentially used that is, which rule is preferentially used to select resources).
  • the priority of S501a is greater than the priority of at least one of the following rules: S501b, S501c, and S501d. For example, if S501a, S501b, S501c, and S501d all exist, then S501a has the highest priority.
  • the priority of S501b is greater than the priority of S501c and S501d; or the priority of S501b is greater than the priority of S501c or S501d.
  • the priority of S501c is greater than the priority of S501d.
  • the terminal device may first select a resource according to a rule with a higher priority, and when the resource has multiple resources, select a resource from the multiple resources according to a rule with the second highest priority, and so on.
  • the terminal device may also determine the first resource according to the repeated identifier or the modulation and coding method. For example, it is determined that the resource carrying the repetitive identifier or the smallest modulation and coding scheme among the resources with the largest interval between two or more subcarriers is the first resource.
  • S502 The terminal device sends N beam failure recovery requests on the first resource.
  • the terminal device can repeatedly send the beam failure recovery request multiple times.
  • the beam failure recovery request information may be carried on the MAC-CE.
  • the terminal device sends N identical MAC-CEs carrying beam failure recovery request information on one or more PUSCH resources.
  • N is an integer greater than or equal to 1.
  • the first resource belongs to the first time unit
  • the terminal device may repeatedly send the first resource N times within the first time unit, and each first resource carries one or more Beam failure recovery request.
  • the terminal device may repeatedly send the first resource N times within N first time units, and each first resource carries a beam failure recovery request.
  • the N beam failure recovery requests can be sent at the same time or in time sharing.
  • N is an integer greater than 1
  • N beam failure recovery requests are sent on a first resource.
  • N is an integer greater than 1
  • the N beam failure recovery requests are sent on multiple first resources respectively. For example: N beam failure recovery requests are sent on multiple first resources respectively.
  • N >1, and N beam failure recovery requests are independently coded.
  • independent coding means that two pieces of information are coded independently before being sent, and two bit sequences are generated after coding, and the two bit sequences after coding are respectively mapped to different time-frequency-space resources (time-domain resources, frequency-domain resources). It is different from at least one of the airspace resources), and is sent from one device to another. After receiving, the other device decodes the two bit sequences on the two resources respectively to obtain the two pieces of information. For example: first information and second information.
  • Independent encoding means that the first information and the second information are obtained by encoding separately.
  • the first information is represented by Q1 bits
  • the second information is represented by Q2 bits.
  • the terminal device encodes the Q1 bits to obtain Q1' bits, and encodes the Q2 bits to obtain Q2' bits.
  • the terminal device sends the Q1' bits and Q2' bits to the network device.
  • the network device decodes the Q1' bits to obtain the first information; and decodes the Q2' bits to obtain the second information.
  • N beam failure recovery requests are the same.
  • the same N beam failure recovery requests means that the contents of the N beam failure recovery requests are completely the same.
  • the beam failure recovery request may be used to indicate the cell information of the cell where the beam failed.
  • the beam failure recovery request may include the identification information of the beam failure cell and/or the reference signal information of the recovery beam failure cell.
  • the cell information of the beam-failed cell may include the identification information of the beam-failed cell and/or the reference signal information of the restored beam-failed cell.
  • the terminal device can bear the beam failure recovery request on the MAC-CE and send it to the network device.
  • the identification information of the beam failing cell may be the identification of the beam failing cell, or the index of the beam failing cell, or it may be indication information indicating the identification of the beam failing cell (for example, a bitmap indicates Cell ID, each bit in the bitmap corresponds to a cell. When the bit is 1, the cell corresponding to the bit has a beam failure; when the bit is 0, the cell corresponding to the bit does not have a beam failure).
  • the reference signal information of the restored beam failed cell may be the reference signal resource index of the restored beam failed cell, or the reference signal resource index of the restored beam failed cell and the signal of the reference signal resource.
  • the quality may also be the indication information of the reference signal resource of the cell where the beam failed to be restored is not identified.
  • the reference signal resource of the cell where the beam recovery fails may be a CSI-RS resource, or may be an SSB resource.
  • N is predefined or configured.
  • the so-called pre-defined can be understood as pre-defined in the standard or agreement.
  • the so-called configuration can be understood as the network device configuring the value of N for the terminal device through signaling.
  • the signaling may be RRC signaling, MAC-CE signaling, or DCI signaling.
  • the terminal device may adjust N according to the transmission code rate of the uplink grant (ul grant). For example, N is determined based on MCS.
  • the MCS may be indicated by the indication information indicating the PUSCH (such as DCI), and may also be indicated by other information such as RRC signaling or MAC-CE or system information.
  • N P
  • N Q
  • P and Q are integers, P ⁇ 0, Q ⁇ 0, P ⁇ Q.
  • the preset threshold can be configured by the network device, or pre-defined by the protocol.
  • “MCS" in the embodiment of the present application can also be replaced with "modulation order", and can also be replaced with "code rate".
  • S503 The network device determines the first resource.
  • the network device may determine the first resource according to at least one parameter among the beam failure case counter, the subcarrier interval, the repetition identifier, and the modulation and coding scheme.
  • the first resource may be determined according to at least one parameter among the beam failure case counter, the subcarrier interval, the repetition identifier, and the modulation and coding scheme.
  • the network device determining the first resource is an optional step.
  • S504 The network device receives N beam failure recovery requests on the first resource.
  • the network device After receiving the N beam failure recovery requests, the network device independently decodes the N beam failure recovery requests. For example, after receiving the network device, the two bit sequences on the two resources are respectively decoded to obtain the two pieces of information. For example: first information and second information. Independent encoding means that the first information and the second information are obtained by encoding separately.
  • the first information is represented by Q1 bits
  • the second information is represented by Q2 bits.
  • the terminal device encodes the Q1 bits to obtain Q1' bits, and encodes the Q2 bits to obtain Q2' bits.
  • the terminal device sends the Q1' bits and Q2' bits to the network device.
  • the network device decodes the Q1' bits to obtain the first information; and decodes the Q2' bits to obtain the second information.
  • the method for sending a beam failure recovery request improves the transmission reliability by limiting the PUSCH resource for BFRQ transmission or by sending multiple identical BFRQs, and reduces the beam failure recovery time delay.
  • the terminal device may select the first resource from the second resource to send the link failure recovery request information according to the foregoing method.
  • the terminal device can select the network device configuration in S104 or instruct one PUSCH resource in the PUSCH to send N repeated BFRQs (also referred to as N identical BFRQ MAC-CEs).
  • N repeated BFRQ information is independently encoded.
  • the terminal device can select the network device configuration in S104 or instruct multiple PUSCH resources in the PUSCH to send N repeated BFRQs (also referred to as N same BFRQ MAC-CE). For example, the terminal device selects two PUSCH resources to carry two BFRQ MAC-CEs respectively.
  • the terminal device For Mode 1 and Mode 2, it is an optional step for the terminal device to select the PUSCH resource to send the beam failure recovery request information according to a preset rule. That is, the terminal device may not execute the terminal device to select the PUSCH resource according to the preset rule to send the beam failure recovery request information. At this time, the PUSCH resource selected by the terminal device may depend on the implementation of the terminal device.
  • Manner 3 The terminal device bears the N same BFRQs on the first resource determined in S501.
  • the first resource may be determined by the terminal device from the second resource according to the method described in S501.
  • this embodiment may also include other steps, such as beam failure detection.
  • the network device may also configure a second resource for the terminal device.
  • the terminal device selects one or more resources from the second resource as the first resource, and sends N beam failure recovery requests on the first resource.
  • For the method for the terminal device to obtain the second resource reference may be made to the description of the foregoing embodiment S104 for details, which will not be repeated.
  • N identical BFRQs may be simply referred to as the second request information.
  • the method for sending a beam failure recovery request improves the reliability of the information transmission by limiting the resource for sending the link failure recovery request information, reduces the information transmission delay, and realizes the link failure recovery with high reliability and low delay. .
  • Fig. 7 is a flowchart of a method for sending a beam failure recovery request provided by an embodiment of the application. As shown in Figure 7, the method may include:
  • the terminal device determines that the beam between the terminal device and the network device has failed.
  • the terminal device may measure the beam failure detection reference signal resource set (beam failure detection RS set) to determine the beam failure between the terminal device and the network device.
  • beam failure detection RS set beam failure detection reference signal resource set
  • the terminal device recognizes the new link.
  • the terminal device can identify reference signals in a candidate reference signal resource set (candidate beam identification RS set).
  • the terminal device can restore the link based on the reference signal.
  • S102 which will not be repeated.
  • S703 The terminal device sends N beam failure recovery requests.
  • the terminal device may repeat the beam failure recovery request twice or more.
  • the beam failure recovery request information may be carried on the MAC-CE.
  • the terminal device sends N identical MAC-CEs carrying beam failure recovery request information on one or more PUSCH resources.
  • N is an integer greater than or equal to 2.
  • N beam failure recovery requests are independently coded.
  • N is predefined or configured. Or, N is determined based on MCS. For detailed explanation, please refer to the explanation of S502, which will not be repeated.
  • the network device receives N beam failure recovery requests.
  • the network device sends a beam failure recovery response to the terminal device.
  • S706 The terminal device receives a beam failure recovery response sent by the network device.
  • the method for sending a beam failure recovery request improves the reliability of the information transmission by repeatedly sending the beam failure recovery request information multiple times, reduces the information transmission delay, and realizes a link failure recovery with high reliability and low delay. .
  • the network device and the terminal device include hardware structures and/or software modules corresponding to each function.
  • the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software-driven hardware depends on the specific application scenarios and design constraints of the technical solution.
  • FIG. 8 and FIG. 9 are schematic structural diagrams of possible communication devices provided by embodiments of this application. These communication devices can be used to implement the functions of the terminal device or the network device in the foregoing method embodiment, and therefore can also achieve the beneficial effects of the foregoing method embodiment.
  • the communication device may be the terminal device 220 shown in FIG. 2, or the network device 210 shown in FIG. 2, or may be a module applied to the terminal device or the network device (such as chip).
  • the communication device 800 includes a processing unit 810 and a transceiving unit 820.
  • the communication device 800 is used to implement the functions of the terminal device or the network device in the method embodiments shown in FIG. 5 to FIG. 7.
  • the transceiver unit 820 is used to perform S502; the processing unit 810 is used to perform S501.
  • the transceiver unit 820 is used to perform S504; the processing unit 810 is used to perform S503.
  • the transceiver unit 820 is used to perform S502; the processing unit 810 is used to perform S501a to S501d.
  • the transceiver unit 820 is used to perform S504; the processing unit 810 is used to perform S503.
  • the transceiver unit 820 is used to perform S703 and S706; the processing unit 810 is used to perform S701 to S702.
  • the transceiver unit 820 is used to perform S704 and S705.
  • processing unit 810 and the transceiving unit 820 can be obtained directly by referring to the relevant descriptions in the method embodiments shown in FIG. 5 to FIG. 7, and will not be repeated here.
  • the communication device 900 includes a processor 910 and an interface circuit 920.
  • the processor 910 and the interface circuit 920 are coupled to each other.
  • the interface circuit 920 may be a transceiver or an input/output interface.
  • the communication device 900 may further include a memory 930 for storing instructions executed by the processor 910 or storing input data required by the processor 910 to run the instructions or storing data generated after the processor 910 runs the instructions.
  • the processor 910 is used to perform the functions of the above-mentioned processing unit 810, and the interface circuit 920 is used to perform the functions of the above-mentioned transceiving unit 820.
  • the terminal device chip When the foregoing communication device is a chip applied to a terminal device, the terminal device chip implements the function of the terminal device in the foregoing method embodiment.
  • the terminal device chip receives information from other modules in the terminal device (such as a radio frequency module or antenna), and the information is sent by the network device to the terminal device; or, the terminal device chip sends information to other modules in the terminal device (such as a radio frequency module or antenna).
  • the antenna sends information, which is sent from the terminal device to the network device.
  • the network device chip implements the function of the network device in the foregoing method embodiment.
  • the network device chip receives information from other modules in the network device (such as radio frequency modules or antennas), and the information is sent by the terminal device to the network device; or, the network device chip sends information to other modules in the network device (such as radio frequency modules or antennas).
  • the antenna sends information, which is sent by the network device to the terminal device.
  • the processor in the embodiments of the present application may be a central processing unit (Central Processing Unit, CPU), or other general-purpose processors, digital signal processors (Digital Signal Processors, DSPs), and application specific integrated circuits. (Application Specific Integrated Circuit, ASIC), Field Programmable Gate Array (Field Programmable Gate Array, FPGA) or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof.
  • the general-purpose processor may be a microprocessor or any conventional processor.
  • the method steps in the embodiments of the present application can be implemented by hardware, or can be implemented by a processor executing software instructions.
  • Software instructions can be composed of corresponding software modules, which can be stored in random access memory (Random Access Memory, RAM), flash memory, read-only memory (Read-Only Memory, ROM), and programmable read-only memory (Programmable ROM) , PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electrically erasable programmable read-only memory (Electrically EPROM, EEPROM), register, hard disk, mobile hard disk, CD-ROM or well-known in the art Any other form of storage medium.
  • RAM Random Access Memory
  • ROM read-only memory
  • PROM programmable read-only memory
  • Erasable PROM Erasable PROM
  • EPROM electrically erasable programmable read-only memory
  • register hard disk, mobile hard disk, CD-ROM or well-known in the art Any other form of storage medium.
  • An exemplary storage medium is coupled to the processor, so that the processor can read information from the storage medium and write information to the storage medium.
  • the storage medium may also be an integral part of the processor.
  • the processor and the storage medium may be located in the ASIC.
  • the ASIC can be located in a network device or a terminal device.
  • the processor and the storage medium may also exist as discrete components in the network device or terminal device.
  • the disclosed device and method can be implemented in other ways.
  • the device embodiments described above are merely illustrative.
  • the division of the modules or units is only a logical function division. In actual implementation, there may be other division methods, for example, multiple units or components may be divided. It can be combined or integrated into another device, or some features can be omitted 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 parts may or may not be physically separate.
  • the parts displayed as units may be one physical unit or multiple physical units, that is, they may be located in one place, or they may be distributed to multiple different places. . Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • the functional units in the various embodiments 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 above-mentioned integrated unit can be implemented in the form of hardware or software functional unit.
  • the above-mentioned embodiments it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
  • software it can be implemented in the form of a computer program product in whole or in part.
  • the computer program product includes one or more computer programs or instructions.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, network equipment, user equipment, or other programmable devices.
  • the computer program or instruction 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 program or instruction may be transmitted from a website, a computer, or The server or data center transmits to another website site, computer, server or data center through wired or wireless means.
  • 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 integrates one or more available media.
  • the usable medium may be a magnetic medium, such as a floppy disk, a hard disk, and a magnetic tape; it may also be an optical medium, such as a digital video disc (digital video disc, DVD); and it may also be a semiconductor medium, such as a solid state drive (solid state drive). , SSD).
  • “at least one” refers to one or more, and “multiple” refers to two or more.
  • “And/or” describes the association relationship of the associated objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, and B exists alone, where A, B can be singular or plural.
  • the character “/” generally indicates that the associated objects before and after are an “or” relationship; in the formula of this application, the character “/” indicates that the associated objects before and after are a kind of "division” Relationship.

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Abstract

公开了一种发送波束失败恢复请求的方法及装置，涉及通信领域，解决了波束失败恢复的时延较长的问题。该方法包括：选择特定的PUSCH资源，在该PUSCH资源上发送至少一个波束失败恢复请求。或者，在任意的PUSCH资源上发送至少两个波束失败恢复请求。从而，通过限制MAC-CE传输的PUSCH资源或者通过发送多个相同的MAC-CE提高传输可靠性，降低了波束失败恢复时延。

Description

一种发送波束失败恢复请求的方法及装置 技术领域
本申请实施例涉及通信领域，尤其涉及一种发送波束失败恢复请求的方法及装置。
背景技术
为了应对未来爆炸性的移动数据流量增长、海量移动通信的设备连接、不断涌现的各类新业务和应用场景，第五代(the fifth generation，5G)移动通信系统应运而生，5G移动通信系统又称为新无线接入技术(new radio access technology，NR)系统。
在NR系统中，引入了基于波束赋形技术的信号传输机制，即通过增大天线增益来提高信号发射功率，从而补偿网络设备与终端设备间采用高频频段传输无线信号过程中无线信号的路径损耗。但是，由于在高频信道下的无线信号的绕射能力较差，可能存在无线信号被阻挡无法继续传输的情况。为了防止无线信号被阻挡导致通信突然中断的情况发生，终端设备可以测量网络设备配置的波束失败检测参考信号(beam failure detection reference signal，BFD RS)的通信质量来确定是否发生波束失败。在终端设备确定波束失败时，在任意的物理上行共享信道(Physical Uplink Shared Channel，PUSCH)上向网络设备发送波束失败恢复请求(beam failure recovery request，BFRQ)，以便于恢复失败的链路。若BFRQ传输失败，终端设备需要重传BFRQ来保证BFRQ传输成功，因此，增加了波束失败恢复时延。
发明内容
本申请实施例提供一种发送波束失败恢复请求的方法及装置，解决了波束失败恢复时延较长的问题。
为达到上述目的，本申请采用如下技术方案：
第一方面，本申请提供了一种发送波束失败恢复请求的方法，该方法可应用于终端设备，或者该方法可应用于可以支持终端设备实现该方法的通信装置，例如该通信装置包括芯片系统，方法包括：先确定第一资源，在第一资源上发送N个BFRQ，其中，N为大于1或等于1的整数。本申请提供的发送波束失败恢复请求的方法，通过限制BFRQ传输的PUSCH资源或者通过发送多个相同的BFRQ提高传输可靠性，降低了波束失败恢复时延。
第二方面，本申请提供了一种接收波束失败恢复请求的方法，该方法可应用于网络设备，或者该方法可应用于可以支持网络设备实现该方法的通信装置，例如该通信装置包括芯片系统，方法包括：先确定第一资源，在第一资源上接收N个BFRQ，其中，N为大于1或等于1的整数。本申请提供的接收波束失败恢复请求的方法，通过限制BFRQ传输的PUSCH资源或者通过接收多个相同的BFRQ提高传输可靠性，降低了波束失败恢复时延。
在一种可能的实现方式中，确定第一资源，包括：根据波束失败事例计数器确定第一资源，第一资源所属的小区的波束失败事例计数器为0。当波束失败事例计数器 为0时，表示该小区或小区组未出现波束失败的情况，该小区或小区组的链路质量较好，因此，终端设备可以选择波束失败事例计数器为0的小区的资源确定为第一资源。
在另一种可能的实现方式中，确定第一资源，包括：根据子载波间隔确定第一资源，第一资源的子载波间隔在K个资源的子载波间隔中最大，K为整数，K≥1。由于子载波间隔越大，一个OFDM符号长度越短。最大子载波间隔的资源可以较快的完成传输。因此，终端设备可以选择K个资源的子载波间隔中最大子载波间隔的资源确定为第一资源，以较快的完成波束失败请求的传输。
在另一种可能的实现方式中，确定第一资源，包括：根据重复标识确定第一资源，第一资源配置了重复标识。该重复标识指示该资源可以用于重复传输多个相同的信息。或者说携带重复标识的资源的传输可靠性较高，或者说携带重复标识的资源可以用于URLLC业务的传输，为该业务分配的资源需要保证高可靠低时延的传输。因此在携带重复标识的资源上传输波束失败请求可以保证波束失败请求传输的可靠性，及时完成波束失败恢复，减少波束失败恢复时延。
在另一种可能的实现方式中，确定第一资源，包括：根据调制编码方式确定第一资源，第一资源对应的调制编码方式在L个资源对应的调制编码方式中最小，L为整数，L≥1。由于较小的调制编码方式，会采用低阶调制方式和低速率的信道编码方案，来保证通信质量，通过选取较小的调制编码方式可以保证波束失败恢复请求的传输可靠性，进而避免波束失败恢复请求的重传，降低了波束失败恢复的时延。可选的，所述第一资源对应的调制编码方式可以指第一资源的指示信息所指示的调制编码方式。
在另一种可能的实现方式中，N为预定义的或者配置的。
在另一种可能的实现方式中，N是根据调制编码方式(Modulation and Coding Scheme，MCS)确定的。
在另一种可能的实现方式中，N是根据MCS确定的，包括：当MCS大于或等于预设门限时，N＝P；当MCS小于预设门限时，N＝Q；其中，P和Q均为整数，P≥0，Q≥0，P≥Q。
在另一种可能的实现方式中，当N>1时，N个波束失败恢复请求独立编码。通过重复发送多个波束失败恢复请求，提高波束失败恢复请求传输的可靠性。
在另一种可能的实现方式中，当N>1时，N个波束失败恢复请求相同。
第三方面，本申请提供了一种发送波束失败恢复请求的方法，该方法可应用于终端设备，或者该方法可应用于可以支持终端设备实现该方法的通信装置，例如该通信装置包括芯片系统，方法包括：在第一资源上发送N个BFRQ，N为整数，N≥2，接收波束失败恢复响应信息(可以简称为Beam failure recovery response，BFRR)。本申请提供的发送波束失败恢复请求的方法，通过发送多个相同的BFRQ提高传输可靠性，降低了波束失败恢复时延。
第四方面，本申请提供了一种接收波束失败恢复请求的方法，该方法可应用于网络设备，或者该方法可应用于可以支持网络设备实现该方法的通信装置，例如该通信装置包括芯片系统，方法包括：在第一资源上接收N个BFRQ，N为整数，N≥2；发送BFRR。本申请提供的接收波束失败恢复请求的方法，通过接收多个相同的BFRQ提高传输可靠性，降低了波束失败恢复时延。
在一种可能的实现方式中，当N>1时，N个波束失败恢复请求独立编码，N个波束失败恢复请求相同。
第五方面，本申请还提供了一种通信装置，用于实现上述第一方面描述的方法。通信装置为终端设备或支持终端设备实现该第一方面描述的方法的通信装置，例如该通信装置包括芯片系统。例如，该通信装置包括：处理单元和发送单元。所述处理单元，用于确定第一资源；所述发送单元，用于在第一资源上发送N个BFRQ，N为整数，N≥1。
可选地，具体的方法同第一方面中相应的描述，这里不再赘述。
第六方面，本申请还提供了一种通信装置，用于实现上述第二方面描述的方法。通信装置为网络设备或支持网络设备实现该第二方面描述的方法的通信装置，例如该通信装置包括芯片系统。例如，通信装置包括：处理单元和接收单元。所述处理单元，用于确定第一资源。所述接收单元，用于在第一资源上接收N个BFRQ，N为大于1或等于1的整数。
可选地，具体的方法同第二方面中相应的描述，这里不再赘述。
第七方面，本申请还提供了一种通信装置，用于实现上述第三方面描述的方法。通信装置为终端设备或支持终端设备实现该第三方面描述的方法的通信装置，例如该通信装置包括芯片系统。例如，该通信装置包括：发送单元和接收单元。所述发送单元，用于在第一资源上发送N个BFRQ，N为整数，N≥2；接收单元，用于接收BFRR。
可选地，具体的方法同第三方面中相应的描述，这里不再赘述。
第八方面，本申请还提供了一种通信装置，用于实现上述第四方面描述的方法。通信装置为网络设备或支持网络设备实现该第四方面描述的方法的通信装置，例如该通信装置包括芯片系统。例如，通信装置包括：接收单元和发送单元。所述接收单元，用于在第一资源上接收N个BFRQ，N为整数，N≥2；所述发送单元，用于发送BFRR。
可选地，具体的方法同第四方面中相应的描述，这里不再赘述。
需要说明的是，上述第五方面和第八方面的功能模块可以通过硬件实现，也可以通过硬件执行相应的软件实现。硬件或软件包括一个或多个与上述功能相对应的模块。例如，收发器，用于完成接收单元和发送单元的功能，处理器，用于完成处理单元的功能，存储器，用于处理器处理本申请的方法的程序指令。处理器、收发器和存储器通过总线连接并完成相互间的通信。具体的，可以参考第一方面所述的方法至第四方面所述的方法中的终端设备或网络设备的行为的功能。
第九方面，本申请还提供了一种通信装置，用于实现上述第一方面描述的方法。所述通信装置为终端设备或支持终端设备实现该第一方面描述的方法的通信装置，例如该通信装置包括芯片系统。例如所述通信装置包括处理器，用于实现上述第一方面描述的方法的功能。所述通信装置还可以包括存储器，用于存储程序指令和数据。所述存储器与所述处理器耦合，所述处理器可以调用并执行所述存储器中存储的程序指令，用于实现上述第一方面描述的方法中的功能。所述通信装置还可以包括通信接口，所述通信接口用于该通信装置与其它设备进行通信。示例性地，若所述通信装置为终端设备，该其它设备为网络设备。
可选地，具体的发送波束失败恢复请求的方法同第一方面中相应的描述，这里不 再赘述。
第十方面，本申请还提供了一种通信装置，用于实现上述第二方面描述的方法。所述通信装置为网络设备或支持网络设备实现该第二方面描述的方法的通信装置，例如该通信装置包括的芯片系统。例如所述通信装置包括处理器，用于实现上述第二方面描述的方法中的功能。所述通信装置还可以包括存储器，用于存储程序指令和数据。所述存储器与所述处理器耦合，所述处理器可以调用并执行所述存储器中存储的程序指令，用于实现上述第二方面描述的方法中的功能。所述通信装置还可以包括通信接口，所述通信接口用于该通信装置与其它设备进行通信。示例性地，若所述通信装置为网络设备，该其它设备为终端设备。
可选地，具体的接收波束失败恢复请求的方法同第二方面中相应的描述，这里不再赘述。
第十一方面，本申请还提供了一种通信装置，用于实现上述第三方面描述的方法。所述通信装置为终端设备或支持终端设备实现该第三方面描述的方法的通信装置，例如该通信装置包括芯片系统。例如所述通信装置包括处理器，用于实现上述第三方面描述的方法的功能。所述通信装置还可以包括存储器，用于存储程序指令和数据。所述存储器与所述处理器耦合，所述处理器可以调用并执行所述存储器中存储的程序指令，用于实现上述第三方面描述的方法中的功能。所述通信装置还可以包括通信接口，所述通信接口用于该通信装置与其它设备进行通信。示例性地，若所述通信装置为终端设备，该其它设备为网络设备。
可选地，具体的发送波束失败恢复请求的方法同第三方面中相应的描述，这里不再赘述。
第十二方面，本申请还提供了一种通信装置，用于实现上述第四方面描述的方法。所述通信装置为网络设备或支持网络设备实现该第四方面描述的方法的通信装置，例如该通信装置包括的芯片系统。例如所述通信装置包括处理器，用于实现上述第四方面描述的方法中的功能。所述通信装置还可以包括存储器，用于存储程序指令和数据。所述存储器与所述处理器耦合，所述处理器可以调用并执行所述存储器中存储的程序指令，用于实现上述第四方面描述的方法中的功能。所述通信装置还可以包括通信接口，所述通信接口用于该通信装置与其它设备进行通信。示例性地，若所述通信装置为网络设备，该其它设备为终端设备。
可选地，具体的接收波束失败恢复请求的方法同第四方面中相应的描述，这里不再赘述。
第十三方面，本申请还提供了一种计算机可读存储介质，包括：计算机软件指令；当计算机软件指令在通信装置中运行时，使得通信装置执行上述第一方面至第四方面中任一方面所述的方法。
第十四方面，本申请还提供了一种包含指令的计算机程序产品，当计算机程序产品在通信装置中运行时，使得通信装置执行上述第一方面至第四方面中任一方面所述的方法。
第十五方面，本申请提供了一种芯片系统，该芯片系统包括处理器，还可以包括存储器，用于实现上述方法中网络设备或终端设备的功能。该芯片系统可以由芯片构 成，也可以包含芯片和其他分立器件。
第十六方面，本申请还提供了一种通信系统，所述通信系统包括第五方面描述的终端设备或支持终端设备实现该第一方面描述的方法的通信装置，以及第六方面描述的网络设备或支持网络设备实现该第二方面描述的方法的通信装置；
或所述通信系统包括第七方面描述的终端设备或支持终端设备实现该第三方面描述的方法的通信装置，以及第八方面描述的网络设备或支持网络设备实现该第四方面描述的方法的通信装置；
所述通信系统包括第九方面描述的终端设备或支持终端设备实现该第一方面描述的方法的通信装置，以及第十方面描述的网络设备或支持网络设备实现该第二方面描述的方法的通信装置；
或所述通信系统包括第十一方面描述的终端设备或支持终端设备实现该第三方面描述的方法的通信装置，以及第十二方面描述的网络设备或支持网络设备实现该第四方面描述的方法的通信装置。
另外，上述任意方面的设计方式所带来的技术效果可参见第一方面和第四方面中不同设计方式所带来的技术效果，此处不再赘述。
本申请中，终端设备、网络设备和通信装置的名字对设备本身不构成限定，在实际实现中，这些设备可以以其他名称出现。只要各个设备的功能和本申请类似，属于本申请权利要求及其等同技术的范围之内。
附图说明
图1为一实施例提供的波束失败恢复流程的示意性流程图；
图2为一实施例提供的通信系统的架构示意图；
图3为一实施例提供的通信系统的架构示意图；
图4为一实施例提供的通信系统的架构示意图；
图5为一实施例提供的发送波束失败恢复请求的方法流程图；
图6为一实施例提供的发送波束失败恢复请求的方法流程图；
图7为一实施例提供的发送波束失败恢复请求的方法流程图；
图8为一实施例提供的通信装置的组成示意图；
图9为一实施例提供的通信装置的组成示意图。
具体实施方式
本申请说明书和权利要求书及上述附图中的术语“第一”、“第二”和“第三”等是用于区别不同对象，而不是用于限定特定顺序。
在本申请实施例中，“示例性的”或者“例如”等词用于表示作例子、例证或说明。本申请实施例中被描述为“示例性的”或者“例如”的任何实施例或设计方案不应被解释为比其它实施例或设计方案更优选或更具优势。确切而言，使用“示例性的”或者“例如”等词旨在以具体方式呈现相关概念。
为了下述各实施例的描述清楚简洁，首先给出相关技术的简要介绍：
1、控制资源集合(control resource set，CORESET)
为了提高终端设备盲检控制信道的效率，NR标准制定过程中提出了控制资源集合的概念。网络设备可为终端设备配置一个或多个资源集合，用于发送物理下行控制信 道(physical downlink control channel，PDCCH)。网络设备可以在终端设备对应的任一控制资源集合上，向终端设备发送控制信道。此外，网络设备还需要通知终端设备所述控制资源集合的相关联的其他配置，例如搜索空间集合等。每个控制资源集合的配置信息存在差异，例如频域宽度差异、时域长度差异等。可扩展地，本申请中的控制资源集合可以是5G移动通信系统定义的CORESET或控制区域(control region)或增强物理下行控制信道(enhanced-physical downlink control channel，ePDCCH)集合(set)。
PDCCH所占用的时频位置可以称之为下行控制区域。在长期演进(Long Term Evolution，LTE)中，PDCCH始终位于一个子帧的前m个(m可能的取值为1、2、3和4)符号。应注意，LTE中E-PDCCH和R-PDCCH的位置未处于前m个符号。
在NR中，下行控制区域可以由无线资源控制(Radio Resource Control，RRC)信令通过控制资源集合和搜索空间集合(search space set)灵活配置：
控制资源集合可以配置PDCCH或控制信道单元(control channel element，CCE)的频域位置，时域的持续符号数等信息；
搜索空间集合可配置PDCCH的检测周期以及偏移量，在一个时隙内的起始符号等信息。
例如，搜索空间集合可配置PDCCH周期为1个时隙，而时域起始符号为符号0，则终端设备可以在每个时隙的起始位置检测PDCCH。
2、空间相关参数信息
空间相关参数信息可以是准共址(quasi-collocation，QCL)信息，还可以是空间相关信息(spatial relation)。一般来说，QCL信息用于指示下行信号(如PDCCH/PDSCH/CSI-RS/DMRS/TRS)的空间相关参数(还可以称为空间相关特性)，空间相关信息用于指示上行信号(如PUCCH/PUSCH/SRS/DMRS)的空间相关参数(还可以称为空间相关特性)。
准共址，也可以称为准共站、同位置。QCL信息也可以称为QCL假设信息。QCL信息用于辅助描述终端设备接收波束赋形信息以及接收流程。
QCL信息可以用于指示两个参考信号之间的QCL关系，其中目标参考信号一般可以是解调参考信号(demodulation reference signal，DMRS)，信道状态信息参考信号(channel state information reference signal，CSI-RS)等，而被引用的参考信号或者源参考信号一般可以是CSI-RS、同步信号广播信道块(synchronous signal/PBCH block，SSB))，探测参考信号(sounding reference signal，SRS)等。应理解，追踪参考信号(tracking reference signal，TRS)也是CSI-RS的一种。应理解，目标参考信号一般可以是下行信号。
具有QCL关系的天线端口对应的信号中可以具有相同的或相近的空间特性参数(或称为参数)，或者，一个天线端口的空间特性参数(或称为参数)，可以用于确定与该天线端口具有QCL关系的另一个天线端口的空间特性参数(或称为参数)，或者，两个天线端口具有相同的或相似的空间特性参数(或称为参数)，或者，两个天线端口间的空间特性参数(或称为参数)差小于某阈值。
空间相关信息用于辅助描述终端设备发射侧波束赋形信息以及发射流程。
空间相关信息用于指示两个参考信号之间的空间发送参数关系，其中目标参考信号一般是可以是DMRS，SRS等，而被引用的参考信号或者源参考信号一般可以是CSI-RS、SRS、SSB等。应理解，目标参考信号一般可以是上行信号。
应理解，满足QCL关系的两个参考信号或信道的空间特性参数是相同的(或相近的，或相似的)，从而基于该源参考信号资源索引可推断出目标参考信号的空间特性参数。
还应理解，满足空间相关性信息的两个参考信号或信道的空间特性参数是相同的(或相近的，或相似的)，从而基于该源参考信号资源索引可推断出目标参考信号的空间特性参数。
其中，空间特性参数包括以下参数中的一种或多种：
入射角(angle of arrival，AoA)、主(dominant)入射角AoA、平均入射角、入射角的功率角度谱(power angular spectrum，PAS)、出射角(angle of departure，AoD)、主出射角、平均出射角、出射角的功率角度谱、终端设备发送波束成型、终端设备接收波束成型、空间信道相关性、网络设备发送波束成型、网络设备接收波束成型、平均信道增益、平均信道时延(average delay)、时延扩展(delay spread)、多普勒扩展(Doppler spread)、多普勒频移(doppler shift)、空间接收参数(spatial Rx parameters)等。
其中，上述角度可以为不同维度的分解值，或不同维度分解值的组合。天线端口可以为具有不同天线端口编号的天线端口，和/或，具有相同天线端口号在不同时间和/或频率和/或码域资源内进行信息发送或接收的天线端口，和/或，具有不同天线端口号在不同时间和/或频率和/或码域资源内进行信息发送或接收的天线端口。
这些空间特性参数描述了源参考信号与目标参考信号的天线端口间的空间信道特性，有助于终端设备根据该QCL信息完成接收侧波束赋形或接收处理过程。应理解，终端设备可以根据QCL信息指示的源参考信号的接收波束信息，接收目标参考信号；这些空间特性参数还有助于终端设备根据该空间相关信息完成发射侧波束赋形或者发射处理过程，应理解，终端设备可以根据空间相关信息指示的源参考信号的发射波束信息，发射目标参考信号。
其中，为了节省网络设备对终端设备的QCL信息指示开销，作为一种可选的实施方式，网络设备可以指示PDCCH或物理下行共享信道(physical downlink shared channel，PDSCH)的解调参考信号与终端设备之前上报的多个参考信号资源中的一个或多个是满足QCL关系的，例如，该参考信号可以是CSI-RS。这里，每一个上报的CSI-RS资源索引对应了一个之前基于该CSI-RS资源测量时建立的一个收发波束对。应理解，满足QCL关系的两个参考信号或信道的接收波束信息是相同的，该终端设备可以根据该参考信号资源索引推断出接收PDCCH或PDSCH的接收波束信息。
现有标准中定义了四种类型的QCL，网络设备可以同时给终端设备配置一个或多种类型的QCL，如QCL type A+D，C+D：
QCL types A：Doppler shift，Doppler spread，average delay，delay spread
QCL types B：Doppler shift，Doppler spread
QCL types C：average delay，Doppler shift
QCL types D：Spatial Rx parameter
当QCL关系指类型D的QCL关系时，可以认为是空域QCL。当天线端口满足空域QCL关系时，可以是下行信号的端口和下行信号的端口之间，或上行信号的端口和上行信号的端口之间的QCL关系(上文中称为spatial relation)，可以是两个信号具有相同的AOA或AOD，用于表示具有相同的接收波束或发射波束。又例如对于下行信号和上行信号间或上行信号与下行信号的端口间的QCL关系，可以是两个信号的AOA和AOD具有对应关系，或两个信号的AOD和AOA具有对应关系，即可以利用波束互易性，根据下行接收波束确定上行发射波束，或根据上行发射波束确定下行接收波束。
从发送端来看，如果说两个天线端口是空域QCL的，则可以是指这两个天线端口的对应的波束方向在空间上是一致的。从接收端来看，如果说两个天线端口是空域QCL的，则可以是指接收端能够在同一波束方向上接收到这两个天线端口发送的信号。
具有空域QCL关系的端口上传输的信号还可以具有对应的波束，对应的波束可以包括以下至少之一：相同的接收波束、相同的发射波束、与接收波束对应的发射波束(对应于有互易的场景)、与发射波束对应的接收波束(对应于有互易的场景)。
具有空域QCL关系的端口上传输的信号还可以理解为使用相同的空间滤波器(spatial filter)接收或发送信号。空间滤波器可以为以下至少之一：预编码，天线端口的权值，天线端口的相位偏转，天线端口的幅度增益。
具有空域QCL关系的端口上传输的信号还可以理解为具有对应的波束对连接(beam pair link，BPL)，对应的BPL包括以下至少之一：相同的下行BPL，相同的上行BPL，与下行BPL对应的上行BPL，与上行BPL对应的下行BPL。
因此，空间接收参数(即，类型D的QCL)可以理解为用于指示接收波束的方向信息的参数。
在本申请的举例中，某些参数的对应关系也可以应用于QCL描述下的场景。
应理解，本申请中适用于QCL假设的场景，也可以是两个参考信号，进一步或者是传输对象间的关联关系。
3、传输配置指示(transmission configuration indicator，TCI)状态(state)
TCI用于指示信号或信道的QCL信息。其中信道可以是PDCCH/CORESET或者是PDSCH。信号可以是CSI-RS、DMRS、TRS或PTRS等。TCI信息是指TCI中包括的参考信号与该信道或信号满足QCL关系，主要用于指示接收信号或信道时，其空间特性参数等信息与TCI中包括的参考信号的空间特性参数等信息相同，相似，相近。
一个TCI状态(TCI state)可以配置一个或多个被引用的参考信号，及所关联的QCL类型(QCL type)。QCL类型又可以分为A、B、C和D四个类别，分别是{Doppler shift，Doppler spread，average delay，delay spread，spatial Rx parameter}的不同组合或选择。TCI状态包括QCL信息，或者TCI状态用于指示QCL信息。
4、同步信号广播信道块(synchronous signal/物理广播信道(physical broadcast channel，PBCH)block，SS/PBCH block)
SS/PBCH block还可以称为SSB。其中，SSB包含主同步信号(primary synchronization signal，PSS)、辅同步信号(secondary synchronization signal，SSS) 和PBCH中的至少一个。主要用于小区搜索、小区同步、承载广播信息的信号。
5、小区载波相关概念：
单元载波(component carrier，CC)又可以称为分量载波，组成载波，或成员载波等。多载波聚合中的每个载波都可以称为“CC”，每个载波由一个或多个物理资源块(physical resource block，PRB)组成，每个载波上可以有各自对应的物理下行控制信道(physical downlink control channel，PDCCH)，调度各自CC的物理下行共享信道(physical downlink shared channel，PDSCH)；或者，有些载波没有PDCCH，此时所述载波可以进行跨载波调度，也即一个CC的PDCCH调度另一个CC的PDSCH。终端设备可以在多个CC上接收数据。
载波聚合(carrier aggregation，CA)可以是指将多个连续或非连续的单元载波聚合成更大的带宽。
主小区/主服务小区(primary cell/primary serving cell，PCell)是CA UE驻留的小区。一般情况下只有PCell才有物理上行控制信道(physical uplink control channel，PUCCH)。
辅助主小区(Primary Secondary Cell，PSCell)是主基站(master eNodeB，MeNB)通过RRC连接信令配置给DC UE的在辅基站(secondary eNodeB，SeNB)上的一个特殊辅小区。
辅小区(Secondary Cell，SCell)是指通过RRC连接信令配置给CA的终端设备的小区，工作在SCC(辅载波)上，可以为CA终端设备提供更多的无线资源。SCell可以只有下行，也可以上下行同时存在。
特殊小区(Special Cell，SpCell)，对于双连接(dual connectivity，DC)场景，SpCell指主小区组(master cell group，MCG)的PCell或者辅小区组(secondary cell group，SCG)的PSCell；否则，如CA场景，SpCell指PCell。
MCG/SCG是指主基站中为终端设备提供服务的小区所在的组为主小区组。在双连接模式下，MeNB关联的一组服务小区，包括PCell和一个或多个SCell。
SCG是指辅基站中为UE提供服务的小区所在的组为辅小区组。在双链接模式下，包括PSCell和0个或者多个SCell。
MeNB是DC终端设备驻留小区所属的基站。
SeNB是MeNB通过RRC连接信令配置给DC UE的另一个基站。
6、波束(beam)：
波束是一种通信资源。波束可以是宽波束，或者窄波束，或者其他类型波束。形成波束的技术可以是波束赋形技术或者其他技术手段。波束赋形技术可以具体为数字波束赋形技术，模拟波束赋形技术，混合数字/模拟波束赋形技术。不同的波束可以认为是不同的资源。通过不同的波束可以发送相同的信息或者不同的信息。可选的，可以将具有相同或者类似的通信特征的多个波束视为是一个波束。一个波束内可以包括一个或多个天线端口，用于传输数据信道，控制信道和探测信号等，例如，发射波束可以是指信号经天线发射出去后在空间不同方向上形成的信号强度的分布，接收波束可以是指从天线上接收到的无线信号在空间不同方向上的信号强度分布。可以理解的是，形成一个波束的一个或多个天线端口也可以看作是一个天线端口集。
波束可以分为网络设备的发送波束和接收波束，与终端设备的发送波束和接收波束。网络设备的发送波束用于描述网络设备发送侧波束赋形信息，基站接收波束用于描述网络设备接收侧波束赋形信息，终端设备的发送波束用于描述终端设备发送侧波束赋形信息，终端接收波束用于描述终端设备接收侧波束赋形信息。也即波束用于描述波束赋形信息。
波束可以对应时间资源和/或空间资源和/或频域资源。
可选地，波束还可以与参考信号资源(例如，波束赋形的参考信号资源)，或者波束赋形信息对应。
可选地，波束还可以与网络设备的参考信号资源关联的信息对应，其中参考信号可以为信道状态信息参考信号(channel state information reference signal，CSI-RS)，SSB，解调参考信号(demodulation reference signal，DMRS)、相位跟踪信号(phase tracking reference signal，PTRS)跟踪信号(tracking reference signal，TRS)等，参考信号资源关联的信息可以是参考信号资源标识，或者QCL信息(特别是type D类型的QCL)等。其中，参考信号资源标识对应了之前基于该参考信号资源测量时建立的一个收发波束对，通过该参考信号资源索引，终端可推断波束信息。
可选地，波束还可以与空域滤波器(spatial filter或spatial domain filter)、空域传输滤波器(spatial domain transmission filter)对应。
其中，接收波束可以等价于空间传输滤波器，空域传输滤波器，空域接收滤波器，空间接收滤波器；发送波束可以等价于空域滤波器，空域传输滤波器，空域发送滤波器，空间发送滤波器。空间相关参数的信息可以等价于空间滤波器(spatial dimain transmission/receive filter)。可选地，空间滤波器一般包括空间发送滤波器，和/或空间接收滤波器。该空间滤波器还可以称之为空域发送滤波器，空域接收滤波器，空间传输滤波器，空域传输滤波器等。其中，终端设备侧的接收波束和网络设备侧的发送波束可以为下行空间滤波器，终端设备侧的发送波束和网络设备侧的接收波束可以为上行空间滤波器。
7、天线端口(antenna port)
天线端口也可以简称端口。被接收端设备所识别的发射天线，或者在空间上可以区分的发射天线。针对每个虚拟天线可以配置一个天线端口，每个虚拟天线可以为多个物理天线的加权组合，每个天线端口可以与一个参考信号端口对应。
8、带宽区域(bandwidth part，BWP)
网络设备可为终端设备配置一个或多个下行/上行带宽区域，该BWP可以是由频域上连续的PRB组成，BWP为终端设备带宽内的一个子集。该BWP在频域上的最小粒度是1个PRB。系统可为终端设备配置一个或多个带宽区域，且所述多个带宽区域在频域上可以重叠(overlap)。
在单载波场景下，一个终端设备在同一时刻可以只有一个激活的BWP，终端设备只能在激活的BWP(active BWP)上接收数据/参考信号，或者发送数据/参考信号。
在本申请中，适用于BWP场景的情况中，特定的BWP也可以是一个特定的频率上的带宽集合，或者是多个RB组成的集合。
9、检测波束失败及恢复波束失败所配置的参考信号
为了检测波束失败，网络设备需要给终端设备指示用于波束失败检测参考信号资源(也可以称为链路失败检测参考信号资源)。波束失败检测参考信号资源可以有以下几种可能的指示方式。例如，网络设备可以给终端设备显示配置用于波束失败检测参考信号资源集合(beam failure detection RS set)(例如，beam failure detection RS resourceconfig或beam failure detection RS或failure detection resources)(也可以称为波束失败检测参考信号资源集合)。网络设备配置波束失败检测参考信号资源集合可以通过RRC、MAC-CE、DCI信令中的一种或多种信令指示。再例如，波束失败检测的参考信号还可以通过隐式方式指示，如将指示PDCCH的TCI(如type-D QCL)中关联的参考信号作为波束失败检测的参考信号，该参考信号是与PDCCH的DMRS满足QCL关系的参考信号，且为周期发送的参考信号。可选地，当网络设备显示配置了用于波束失败检测的参考信号资源集合时，终端设备可以根据该波束失败检测参考信号资源集合检测波束失败；当网络设备没有显示配置用于波束失败检测的参考信号资源集合时，终端设备可以按照上述隐式方式指示的参考信号检测波束失败。
其中，波束失败检测参考信号资源集合中的RS与下行物理控制信道PDCCH的解调参考信号满足QCL关系或者与PDCCH使用相同的TCI状态，当该集合中的部分或者所有参考信号的信道质量信息(如参考信号接收功率(reference signal receiving power，RSRP)，信道质量指示(channel quality indicator，CQI)，块差错率(block error ratio，BLER)，信号与干扰加噪声比(signal to Interference plus noise ratio，SINR)，信噪比(signal noise ratio，SNR)等)低于预定门限，则判定为波束失败。其中低于预定门限可以是连续N次低于预定门限或者一定时间段内N次低于预定门限。该预定门限可以称为波束失败检测门限，还可以称为波束失败门限。应理解，只要是用于波束失败的检测的门限均可以为该预定门限，本申请不对该预定门限的名称做限定。可选的，该波束失败检测门限可以是网络设备配置的，还可以是与无线波束失败失步门限(radio link failure OOS(out of sync))相同的门限。可选地，当网络设备配置了波束失败检测门限时，使用该波束失败检测门限检测波束失败；当网络设备没有配置波束失败检测门限时，可以将无线链路失步门限作为波束失败检测门限检测波束失败。应理解，这里波束失败检测参考信号可以是用于终端检测网络设备的某一发射波束的信道质量，该发射波束是网络设备与该终端进行通信时所使用的波束。
为了恢复波束失败,网络设备还可以给终端设备指示用于恢复终端设备与网络设备链路的参考信号资源集合(candidate beam RS list或candidate beam RS identification resource或beam failure candidate beam resource或candidate beam identification RS或candidate beam list)(也可以称为候选参考信号资源集合或波束失败恢复参考信号资源集合)。波束失败后，终端设备需要从候选参考信号资源集合中选出信道质量信息(如以下一项或多项RSRP、RSRQ、CQI、SINR等)高于预定门限的参考信号资源，用于恢复通信链路。也可以理解为candidate beam identification RS用于终端设备在判断出网络设备的发射波束发生波束失败后，用于发起链路重配的参考信号集合。例如，网络设备可以给终端设备显示配置用于波束失败恢复的参考信号资源集合。网络设备配置波束失败检测参考信号资源集合可以通过RRC、MAC-CE、DCI信令中的一种或多种信令指示。用于波束失败恢复的参考信号资源集合还可以是某个默认的参考信号 资源集合，(例如用于波束管理BM的参考信号资源集合，或者是用于RRM测量的参考信号资源集合，所有或部分SSB组成的参考信号资源集合，或者是复用其他功能的某个参考信号资源集合)。其中，用于波束管理(beam management，BM)的参考信号资源集合可以是repetition标识为“off”的参考信号资源集合(还可以是repetition标识为”on”的参考信号资源集合)。可选地，当网络设备配置了候选参考信号资源集合时，在该参考信号资源集合中识别参考信号；当网络设备没有配置候选参考信号资源集合时，在该默认的参考信号资源集合中识别参考信号。该识别的参考信号可以用于恢复波束失败。可选地，该识别的参考信号的信道质量大于预设门限。
可选的，上述用于识别恢复链路的参考信号过程中的预定门限可以由网络设备配置，或者还可以是预定义的门限。例如，当网络设备没有配置该门限时，默认使用用于移动性测量的门限。该预定门限可以称为波束失败恢复门限，还可以称为链路恢复门限。应理解，只要是用于波束失败恢复的门限均可以为该预定门限，本发明不对该预定门限的名称做限定。
应理解，在具体实现中，用于波束失败检测的参考信号资源集合以及用于恢复终端设备与网络设备链路的参考信号资源集合这两个集合的名称还可以有其他叫法，本申请对此不作具体限定。
在本申请实施例中，波束失败还可以称为波束故障、链路失败、链路故障、通信失败、通信故障、通信链路失败、通信链路故障等。在本申请实施例中，这些概念是相同的含义。该通信失败可以是指用于PDCCH的波束失败检测的参考信号的信号质量小于或者等于预设门限。
在本申请实施例中，波束失败恢复也可以称为恢复网络设备与终端设备通信，波束失败恢复、波束故障恢复、波束恢复、链路失败恢复、链路故障恢复、链路恢复、通信失败恢复、通信故障恢复、通信链路失败恢复、通信链路故障恢复、通信恢复、链路重配等。
本申请实施例中，波束失败恢复请求又可以称为波束失败恢复请求信息、波束故障恢复请求信息、波束恢复请求信息、链路失败恢复请求信息、链路故障恢复请求信息、链路恢复请求信息、通信失败恢复请求信息、通信故障恢复请求信息、通信恢复请求信息、通信链路失败恢复请求信息、通信链路故障恢复请求信息、通信链路恢复请求信息、链路重配请求信息、重配请求信息等。可选地，通信失败恢复请求可以是指在用于承载通信失败恢复请求的资源上发送信号。
应理解，本申请中的“信息”可以替换为“消息”。
本申请实施例中，波束失败恢复响应又可以称为波束失败恢复响应信息、波束故障恢复响应信息、波束失败响应信息、波束故障响应信息、波束恢复响应、链路失败恢复响应信息、链路故障恢复响应信息、链路失败响应信息、链路故障响应信息、链路恢复响应信息、通信失败恢复响应信息、通信故障恢复响应信息、通信失败响应信息、通信故障响应信息、通信恢复响应信息、通信链路失败恢复响应信息、通信链路故障恢复响应信息、通信链路故障响应信息、通信链路失败响应信息、通信链路响应信息、链路重配响应信息、重配响应信息等。应理解，本申请中，通信失败恢复响应信息可以简称为响应信息。
本申请实施例中，波束失败恢复响应信息可以是指在用于发送波束失败恢复响应的控制资源集合和/或搜索空间集合上接收循环冗余校验(cyclic redundancy check，CRC)由小区无线网络临时标识(cell radio network temporary identifier，C-RNTI)加扰的下行控制信息(downlink control information，DCI)，该波束失败恢复响应信息还可以由其他信息加扰的DCI(如BFR-RNTI加扰的DCI)，该波束失败恢复响应信息还可以是由上述DCI调度的数据，该波束失败恢复响应信息还可以是由上述DCI调度的数据的ACK。该波束失败恢复响应信息还可以是以下信息中的一种：小区无线网络临时标识C-RNTI加扰的DCI、调制编码方式小区特定无线网络临时标识MCS-C-RNTI加扰的DCI、专用搜索空间内的下行控制信息DCI、专用无线网络临时标识RNTI加扰的DCI、随机接入无线网络临时标识RA-RNTI加扰的DCI、包含预设状态值的DCI、包含传输配置指示TCI信息的DCI、所述发生波束失败的小区的准共址QCL指示信息或指示新传数据的DCI。本申请实施例对此并不作限定。应理解，该指示新传数据的DCI与调度承载波束失败请求信息资源的DCI具有相同的混合自动重传请求(hybrid automatic repeat request，HARQ)进程标识(process identifier)，可选地，该两个DCI的新数据指示(new date indicator，NDI)不同)。应理解，当终端设备接收到波束失败恢复响应信息后，认为波束失败恢复成功。应理解，波束失败恢复成功后，终端设备可以不再发送波束失败恢复请求信息，还可以停止或重置波束失败检测的计数器，还可以停止或重置波束失败检测的计时器、还可以停止或重置波束失败恢复计数器，还可以停止或重置波束失败恢复计时器等。
应理解，本申请实施例中的波束失败、波束失败恢复、波束失败恢复请求信息和波束失败恢复响应信息的名称还可以有其他叫法，本申请对此不作具体限定。
应理解，本申请中，波束恢复失败可以理解为终端设备不再发送波束失败恢复请求信息，也可以理解为停止波束失败恢复计时器(或称为时钟)计时，也可以理解为停止波束失败恢复计数器计数等。
应理解，本申请实施例中，“波束”可以替换为“链路”。
还应理解，本申请实施例中，“小区”可以理解为“服务小区”、“载波”。
可选地，小区包括下行载波、上行(uplink,UL)载波、上行补充(supplementary uplink，SUL)载波中的至少一个。具体地，小区可以包括下行载波、上行载波；或者小区可以包括下行载波、上行补充载波；或者小区包括下行载波、上行载波、上行补充载波。
可选地，上行补充载波的载频低于上行载波，用以提高上行覆盖。
可选地，一般情况下，FDD系统中，上行载波与下行载波的载频不同；TDD系统中，上行载波与下行载波的载频相同。
还应理解，本申请实施例中，上行资源在上行载波上；下行资源在下行载波上。
还应理解，本申请实施例中，上行载波可以是正常的上行载波，还可以是补充上行(supplementary uplink，SUL)载波。
应理解，本申请实施例中的“检测”可以理解为“接收”，还可以理解为“解码”。
应理解，本申请中，时间单元可以是LTE或者5G NR系统中定义的一个或多个无线帧，一个或多个子帧，一个或多个时隙，一个或多个微时隙(mini slot)，一个或 多个正交频分复用(orthogonal frequency division multiplexing，OFDM)符号等，也可以是多个帧或子帧构成的时间窗口，例如系统信息(system information，SI)窗口。
在LTE系统中，最小的时间调度单元为一个1ms时间长度的传输时间间隔(transmission time interval，TTI)。5G既支持时间单元级别的时域调度粒度，也可以支持微时间单元的时域调度粒度，以及满足不同业务的时延需求。例如，时间单元主要用于eMBB业务，微时间单元主要用于URLLC业务。需要说明的是，上述时间单元和微时间单元是一般性的说法，具体的一个例子可以为，时间单元可以称为时隙，微时间单元可以称为微时隙、非时隙(non-slot-based)或迷你时隙(mini-slot)；或者，时间单元可以称为子帧，微时间单元可以称为微子帧；其他类似的时域资源划分方式都不做限定。本申请所述的第一时间单元可以是指时隙或迷你时隙等。例如，一个时隙比如可以包括14个时域符号，一个迷你时隙包括的时域符号数小于14，比如2、3、4、5、6或7等等；或者，一个时隙比如可以包括7个时域符号，一个迷你时隙包括的时域符号数小于7，比如2或4等等，具体取值也不做限定。这里的时域符号可以是OFDM符号。对于子载波间隔为15千赫兹(kilohertz，kHz)的一个时隙，包括6个或7个时域符号，对应的时间长度为0.5ms；对于子载波间隔为60kHz的一个时隙，对应的时间长度则缩短为0.125ms。
应理解，本申请中，“小区标识”还可以替换为“小区索引”。
应理解，本申请实施例中，波束失败事例计数器，还可以称为波束失败事例指示计数器，还可以称为波束失败检测计数器。
应理解，本申请各实施例中，参考信号信息可以包括参考信号资源索引和/或参考信号的信道质量。其中，信道质量可以包括以下一项或多项：参考信号接收功率(reference signal receiving power，RSRP)、信号与干扰加噪声比(signal to interference plus noise ratio，SINR)、参考信号接收质量(reference signal receiving quality，RSRQ)、信道质量指示(channel quality indication，CQI)、或信噪比(signal noise ratio，SNR)等。
通信系统通常使用不同种类的参考信号：一类参考信号用于估计信道，从而可以对含有控制信息或者数据的接收信号进行相干解调；另一类用于信道状态或信道质量的测量，从而实现对终端设备的调度。终端设备基于对CSI-RS的信道质量测量得到信道状态信息CSI。所述CSI包括秩指示(Rank Indicator，RI)、预编码指示(Precoding Matrix Indicator，PMI)和信道质量指示(Channel Quality Indicator，CQI)等中的至少一种。这些CSI信息可由终端设备通过PUCCH或PUSCH发送给网络设备。
随着智能终端特别是视频业务的出现，当前的频谱资源已经难以满足用户对容量需求的爆炸式增长。具有更大的可用带宽的高频频段特别是毫米波频段，日益成为下一代通信系统的候选频段。另一方面，现代通信系统通常使用多天线技术来提高系统的容量和覆盖或者改善用户的体验，使用高频频段带来的另一个好处就是可以大大减小多天线配置的尺寸，从而便于站址获取和更多天线的部署。然而，与现有LTE等系统的工作频段不同的是，高频频段将导致更大的路径损耗，特别是大气、植被等因素的影响更进一步加剧了无线传播的损耗。
为克服上述较大的传播损耗，一种基于波束赋形技术的信号传输机制被采用，以 通过较大的天线增益来补偿信号传播过程中的上述损耗。其中，波束赋形的信号可包括广播信号、同步信号和小区特定的参考信号等。
当信号基于波束赋形技术进行传输时，一旦用户发生移动，可能出现传输信号对应的赋形波束的方向不再匹配移动后的用户位置，从而接收信号频繁中断的问题。为跟踪所述信号传输过程中的赋形波束变化，一种基于波束赋形技术的信道质量测量及结果上报被引入。所述信道质量的测量可以基于波束赋形后的同步信号或小区特定参考信号。相比小区切换，用户在不同赋形波束间的切换更加动态和频繁，因此一种动态的测量上报机制被需要。可选地，类似于CSI信息的上报，所述赋形波束的信道质量结果的上报也可由终端设备通过PUCCH或PUSCH发送给网络设备。
终端设备通过对网络设备发送的多个波束进行测量选择其较优的N个波束，并将较优的N个波束测量信息上报给网络设备。波束测量信息主要包括参考信号资源索引和参考信号质量信息。参考信号质量信息可以为参考信号的接收功率(L1-reference signal received power，L1-RSRP)、参考信号的信号噪声干扰比(L1-signal to interference plus noise ratio，L1-SINR)、参考信号的信号噪声干扰比(signal to interference plus noise ratio，SINR)或参考信号的信道质量指示(channel quality indication，CQI)等参考信号的信道质量信息中的至少一个。
在下行信号的传输中，网络设备发射波束和终端接收波束均可能发生动态变化，终端设备基于接收信号确定的较优接收波束可能包括多个，为了使终端设备确定自身的接收波束，终端设备可以将多个接收波束的信息反馈给网络设备，网络设备可以通过向终端设备发送波束指示信息来向终端设备指示终端接收波束。当终端设备采用模拟域的波束赋形时，终端设备可以基于网络设备发送的波束指示信息来精确的确定终端接收波束，从而可以节省终端设备的波束扫描时间，达到省电的效果。例如，网络设备可以通过配置PDCCH的QCL信息指示终端设备所采用的接收参数。具体地，PDCCH的QCL信息配置方法如下：RRC配置PDCCH的K个候选QCL信息，如K TCI states；MAC-CE指示PDCCH的QCL信息(当K>1时)。
此外协议中还规定网络设备在没有发送RRC和MAC-CE之前，终端设备可以假设PDCCH和PDSCH的DMRS与初始接入时确定的SSB是QCL的。
但是由于在通信过程中存在遮挡，高频信道下的绕射能力差，导致当前服务的波束被阻挡，信号无法继续传输。为了防止在出现波束被阻挡的情况下，通信被突然中段，需要引入相应的机制对当前链路质量进行检测，并在发生阻挡的情况下快速恢复链路。
为了防止无线信号被阻挡导致通信突然中断的情况发生，终端设备可以测量网络设备配置的波束失败检测的参考信号的通信质量来确定是否发生波束失败。图1示出了现有技术中波束失败恢复流程的示意性流程图，如图1所示，该波束失败恢复流程包括：
S101、终端设备测量波束失败检测的参考信号资源集合(beam failure detection RS set)，确定该终端设备与网络设备之间的波束失败。
在一些实施例中，当终端设备判断连续M次波束失败检测参考信号或者波束失败检测参考信号资源集合中所有或部分参考信号的信道质量信息小于或等于波束失败检 测门限时，该终端设备可以确定该终端设备与网络设备之间的波束发生失败。具体地，可以有如下步骤：
1、终端设备测量波束失败检测参考信号资源集合内的参考信号的信道质量(也可称为“信号质量”)。为描述方便，可以将波束失败检测参考信号资源集合内的参考信号称为q0。当波束失败事例上报周期内q0中全部或部分参考信号的信道质量小于或等于链路失败检测门限时，则终端设备的物理(PHY)层会向介质访问控制(media access control，MAC)层上报波束失败事例指示信息。
其中，所述波束失败事例上报周期为物理(PHY)层向介质访问控制(media access control，MAC)层上报波束失败事例指示信息的周期。
应理解，该q0中的参考信号资源与配置该参考信号的SCell的CORESET/PDCCH满足QCL关系(波束失败检测参考信号资源与CORESET可以是一对一的关系，或者是多对一的关系，或者是一对多的关系)。例如，波束失败检测参考信号资源集合中参考信号与PDCCH的DMRS满足准共址(quasi co-location，QCL)关系或者与PDCCH具有相同的TCI状态。
2、若终端设备检测连续N次波束失败事例(也可以理解为MAC层在波束失败检测计时器运行时，收到了N个波束失败事例信息)，则终端设备判定当前SCell发生波束失败。
其中，N通过波束失败检测参数(可以是RRC信令或MAC-CE信令配置的beamFailureInstanceMaxCount参数)配置。
N次波束失败事例是否连续或者说N次波束失败事例的计数，通过波束失败检测参数中的波束失败检测计时器(可以是RRC信令或MAC-CE信令配置的beamFailureDetectionTimer参数)控制。
其中，波束失败事例上报周期为q0中的周期最小的参考信号的周期和2ms中的最大值。波束失败检测计时器的长度为波束失败事例上报周期的整数倍。
终端设备会维护一个波束失败事例计数器(简称为BFI-COUNTER)，该波束失败事例计数器初始值为0。如果终端设备的MAC层接收到PHY层发送的波束失败事例指示信息(beam failure instance indication)，终端设备就会启动或者重启波束失败检测计时器，并且使得BFI-COUNTER加一。当BFI-COUNTER计数值大于或等于N，则确定该SCell发生波束失败。
如果波束失败检测计时器超时，或者高层信令重配了波束失败检测参数中的任何一个参数，将BFI-COUNTER置为0。如果波束失败恢复成功，也将BFI-COUNTER置为0，停止波束失败检测计时器。
应理解，本实施例中，该终端设备确定与网络设备之间在某个载波上的波束发生失败的方式并不限于以上举例，还可以由其他判断方式确定，本申请对此并不作任何限定。
应理解，终端设备确定与网络设备之间在某个载波上的波束发生失败，可以理解为，终端设备确定与网络设备之间在某个载波上的链路发生失败。
S102、终端设备识别新链路。
终端设备可以测量某个参考信号资源集合中的参考信号，识别出用于恢复终端设 备与网络设备之间的链路的参考信号。一般地，该用于恢复终端设备与网络设备之间的链路的参考信号的信道质量需要大于或等于波束失败恢复门限。该参考信号可以简称为第一参考信号或new beam。该第一参考信号可以为一个参考信号或者还可以为多个参考信号。该多个参考信号可以用于恢复载波的链路。该多个参考信号中的每个参考信号可以用于恢复配置该参考信号的载波。或者，该多个参考信号可以用于恢复配置该多个参考信号的单元载波。
在一些实施例中，终端设备可以识别候选参考信号资源集合(candidate beam identification RS set)中的参考信号。终端设备可以根据该参考信号恢复链路。可选地，该识别出的参考信号的信道质量大于或等于波束失败恢复门限。终端设备识别参考信号的过程，可以理解为终端设备在候选参考信号资源集合中确定信道质量大于或者等于波束失败恢复门限的参考信号资源(可以简称为new identified beam或new beam)；这里的确定过程可以是测量所述候选参考信号资源集合的信道质量信息确定的。
应理解，在一种可能的情况中，终端设备识别不出信道质量大于或者等于波束失败恢复门限的参考信号资源(new identified beam)。在另一种可能的情况中，终端设备不执行步骤S102。
S103、网络设备为终端设备配置或指示PUSCH资源。
S104、终端设备接收网络设备发送的配置或指示PUSCH资源的信息。
应理解，为描述方便，网络设备为终端设备配置的PUSCH资源简称为第二资源。
其中，具体的第二资源的指示方式可以有以下方式中的一种或多种：
方式1：终端设备发送第一请求信息请求第二资源。第二资源可以是网络设备通过uplink grant(或DCI)指示的PUSCH资源。该uplink grant(或DCI)可以是CRC由C-RNTI/MCS-C-RNTI加扰的DCI。
其中，在一种实现方式中，第一请求信息指示波束失败事件，承载在PUCCH资源或PRACH资源上。在另一种实现方式中，第一请求信息可以用于请求上行资源，承载在PUCCH资源或PRACH资源上。第一请求信息又可以称为调度请求信息。
应理解，终端设备发送第一请求信息可以在步骤S101后执行，步骤S104前执行。
具体的，终端设备发送第一请求信息。
该第一请求信息还可以称为调度请求信息或者该第一请求信息与调度请求信息采用相同的格式。该第一请求信息可以用于请求用于承载第二请求信息的资源(简称为第二资源)。
应理解，该第二资源可以是第一请求信息的响应信息指示或激活的。
具体地，在一种实施方式中，网络设备在接收到第一请求信息之后，还可以发送该第一请求信息的响应信息。
该第一请求信息的响应信息可以用于指示为该终端分配的第二资源，即网络设备为该终端分配资源。该第二资源可以是非周期资源(或称为动态资源)，该种方法下，网络设备根据当前网络中是否有波束失败的小区(通过第一请求信息指示)来确定是否要分配第二资源，若网络设备接收到第一请求信息，即可获知当前网络中有发生波束失败的小区，网络设备即可动态的分配第二资源，以便终端设备进一步上报有哪些小区发生波束失败，和/或，上报恢复波束失败小区的新链路的信息。由于波束失败事 件是突发事件，该种方法不需要提前预留发送波束失败恢复请求信息的周期资源，可以有效节省资源开销。
在另一种实施方式中，该第一请求信息的响应信息还可以用于激活第二资源，即原本为该终端分配的第二资源，由该第一请求信息的响应信息触发激活，该激活的第二资源为半静态资源(semi-persistent)或静态资源(periodic)。如第二资源可以是由第一请求信息后的第一请求信息的响应信息或第一请求信息后的DCI信令激活的半静态资源或静态资源(例如PUSCH，PUCCH，或物理随机接入信道(physical random access channel，PRACH))。该种方法下，网络设备根据当前网络中是否有链路失败的小区(通过第一请求信息指示)来确定是否要激活第二资源，若网络设备接收到第一请求信息，即可获知当前网络中有发生波束失败的小区，网络设备激活第二资源，以便终端设备进一步上报有哪些小区发生波束失败，和/或，上报恢复链路失败小区的新链路的信息。
可选地，该第二资源可以是高层信令或系统信息配置的，或为预设资源。
具体地，该第二资源可以是由网络设备为该终端配置的，并通过高层信令或系统信息发送给终端。该第二资源还可以网络设备和终端设备预先约定的，或者由终端提前设定，本申请对此不进行限定。
可选地，该第二资源还可以是与用于承载第一请求信息的资源具有关联关系的资源。
具体地，该第二资源可以与用于承载第一请求信息的资源具有映射关系，这样终端在获知用于承载第一请求信息的资源的情况下，就可以确定出第二资源。可选地，该用于承载第一请求信息的资源和第二资源的关联关系可以由主信息块(master information block，MIB)或系统消息块(system information block，SIB)等系统信息配置，或者由无线资源控制(radio resource control，RRC)或媒体访问控制(media access control，MAC)-控制元素(control element，CE)信令配置。该系统信息或信令可以在发送第一请求信息之前发送。可选地，该用于承载第一请求信息的资源和第二资源的配置也可以通过上述系统信息或信令配置。该种方法可以不用再通过第一请求信息的响应信息分配的资源发送第二请求信息，而是直接在该第二资源上发送，可以有效减小波束恢复时延，提高波束恢复速度。
需要说明的是，网络设备可以为终端设备配置多个资源用于传输第一请求信息，以及为终端设备配置多个资源用于传输第二请求信息，终端设备可以从该多个用于传输第一请求信息的资源中选择一个或多个资源发送第一请求信息，还可以从多个用于传输第二请求信息的资源中选择一个或多个作为第二资源。其中，该多个用于传输第一请求信息的资源和该多个用于传输第二请求信息的资源分别可以由上述MIB或SIB等系统信息配置，或者由RRC或MAC-CE等信令配置。
可选地，该第二资源还可以是与第一请求信息关联的资源。可选地，网络设备可以通过MIB或SIB等系统信息，或者通过RRC或MAC-CE信令配置，多个用于发送第一请求信息的资源和多个用于发送第二请求信息的资源，以及该多个用于发送第一请求信息的资源与多个用于发送第二请求信息资源的关联关系，终端可以从该多个用于传输第一请求信息的资源中选择一个发送第一请求信息，还可以从多个用于传输第 二请求信息的资源中选择一个作为第二资源。每个用于传输第一请求信息的资源可以关联一个或多个第二资源，每个用于传输第一请求信息的资源关联的第二资源可以大小不同。终端设备在哪个资源发送第一请求信息，那么，终端设备就在该发送第一请求信息的资源关联的第二资源上发送第二请求信息。
应理解，第二资源可以为PUSCH资源，或者可以为PUCCH资源。
应理解，实施例的第二请求信息可以为指示波束失败小区的小区信息的MAC-CE。第一请求信息的响应信息可以是DCI信息。
第二请求信息可以包括波束失败小区的标识信息和/或恢复波束失败小区的参考信号信息。或者说，该波束失败小区的小区信息可以包括波束失败小区的标识信息和/或恢复波束失败小区的参考信号信息。恢复波束失败小区的参考信号信息可以是参考信号资源的索引，和/或该参考信号资源的信道质量信息(如以下一项或多项RSRP、SINR、RSRQ、CQI等)。
方式2：第二资源还可以是网络设备直接通过uplink grant(或DCI)指示的PUSCH资源。该uplink grant(或DCI)可以是CRC由C-RNTI/MCS-C-RNTI加扰的DCI。
对于方式1和方式2，第二资源可以是网络设备动态分配的资源。该种方法不需要提前预留周期资源，可以有效节省资源开销。
方式3：第二资源可以是网络设备通过RRC或MAC-CE或DCI激活的半静态资源(semi-persistent)或静态资源(periodic)。例如，第二资源可以是物理上行共享信道(physical uplink shared channel，PUSCH)，物理上行控制信道(physical uplink control channel，PUCCH)，或物理随机接入信道(physical random access channel，PRACH)。
方式4：该第二资源可以是配置信息配置的，或为预设资源。
具体地，该第二资源可以是由网络设备为该终端配置的，并通过高层信令或系统信息发送给终端。该第二资源还可以网络设备和终端设备预先约定的，或者由终端提前设定，本申请对此不进行限定。
可选地，该配置信息可以由主信息块(master information block，MIB)或系统消息块(system information block，SIB)等系统信息配置，或者由无线资源控制(radio resource control，RRC)或媒体访问控制(media access control，MAC)-控制元素(control element，CE)信令配置。该配置信息可以是configured grant配置的。
方式5：该第二资源可以是与PRACH或PUCCH关联的PUSCH资源。或者说，该第二资源可以是2step PRACH中的PUSCH资源。可理解的，网络设备配置具有关联关系的PRACH资源和PUSCH资源，PUSCH资源不需要DCI指示。一种实现方式中，终端设备选择一个PRACH资源发起随机接入过程，并在该PRACH资源关联的PUSCH资源上发送其他信息(如UE ID等)。另一种实现方式中，该PRACH资源或PUCCH资源为承载第一请求信息的资源。其中第一请求信息如方式1所述，此处不再赘述。
对于方法3、方法4和方法5，网络设备指示第二资源的配置信息可以是提前发送的，该配置信息可以是终端设备在确定波束失败之前由网络设备发送给终端设备的，那么终端设备在发现波束失败后直接在该资源上发送波束失败恢复请求信息，而无需再等待网络设备分配PUSCH资源。
应理解，通过上述方式1至方式5中的任意一个或多个方式，终端设备可以获得一个或多个第二资源。
S105、终端设备向网络设备发送波束失败恢复请求。
该波束失败恢复请求关联S102中识别的信道质量大于或者等于波束失败恢复门限的参考信号(new identified beam或new beam)，该终端设备可以通过显示的方式或者隐式的方式将new identified beam或者参考信号资源通知给该网络设备。例如，对于显示的方式，终端设备可以将该新识别的参考信号的资源索引或资源标识显示上报给网络设备。例如，对于隐式的方式，网络设备提前配置发送BFRQ信息的多个上行资源与多个候选参考信号资源的关联关系，终端设备通过选择发送BFRQ的上行资源，隐式指示新识别参考信号资源。
终端设备还可以通过一个或多个波束失败恢复请求信息上报新波束(new beam)信息、波束失败的小区标识等内容中的至少一个内容。也可以理解为BFRQ指示new beam信息、波束失败的小区标识、波束失败事件中的一个或多个内容。
应理解，本实施例中，该终端设备可以向该网络设备发送BFRQ，并通过该网络设备恢复该终端设备与该网络设备之间的波束失败，还可以是该终端设备向另一个网络设备发送BFRQ，通过该另一个网络设备恢复该终端设备与该网络设备之间的波束失败。
NR中PCell的BFRQ信息可以通过PRACH资源上报。基站配置一个或多个PRACH资源，并配置每个PRACH资源关联一个参考信号，该参考信号为用于恢复链路失败的参考信号。该参考信号可以是基站配置的候选参考信号资源集合中的参考信号。终端设备确认波束失败，识别new beam，选择与new beam关联的PRACH资源发送信号。通过该方式终端设备可以隐式指示new beam信息。
例如，网络设备为第一小区配置的用于发送第一小区的波束失败请求信息的上行资源集合，称为第一上行资源集合。该第一上行资源集合中包括的物理随机接入信道(Physical Random Access Channel，PRACH)资源的个数等于第一小区的候选参考信号资源集合中下行参考信号的个数，即一个PRACH资源与一个下行参考信号相关联。终端设备在候选参考信号资源集合中识别大于或等于波束失败恢复门限的参考信号，并在该参考信号关联的PRACH资源上发送波束失败恢复请求信息。可选地，在上下行有互易性时，终端设备在一个PRACH资源上发送信息时的发送波束即为该PRACH资源关联的下行参考信号的接收波束对应的发送波束，即终端设备可以利用该接收波束对应的发送波束在该PRACH资源上发送信息。而上下行没有互易性时，一种可选的实施方式是，该第一上行资源集合中，一个PRACH资源与一个下行参考信号和一个上行参考信号关联，终端设备可以根据确定的下行参考信号关联的PRACH资源，进而确定该PRACH资源关联的上行参考信号，从而利用该上行参考信号的发送波束在该PRACH资源上发送信息。
NR中SCell的BFRQ信息可以通过一步上报。该BFRQ信息可以承载在PUSCH资源上；还可以承载在PUCCH资源上；其中该BFRQ信息可以指示波束失败的小区标识，和/或new beam信息。
BFRQ信息还可以通过BFRQ1+BFRQ2两步上报。其中，BFRQ1可以承载在 PUCCH资源或PRACH资源上，BFRQ2可以承载在PUSCH资源或PUCCH资源上。在一种实现方式中，BFRQ1指示波束失败事件，BFRQ2指示波束失败的小区标识和/或new beam信息。在另一种实现方式中，BFRQ1指示波束失败事件和/或波束失败的小区标识，BFRQ2指示new beam信息。
应理解，上述BFRQ信息承载在PUSCH资源上，可以理解为通过MAC-CE上报BFRQ信息。
可选地，该终端设备的媒体接入控制(media access control，MAC)层会维护一个波束失败恢复计时器(beam failure recovery timer)和波束失败恢复计数器(beam failure recovery counter)。该波束失败恢复计时器用于控制整个波束失败恢复的时间，该波束失败恢复计数器用于限制该终端设备发送波束失败恢复请求的次数。当波束失败恢复计数器达到最大值时，该终端设备认为波束失败恢复不成功，停止波束失败恢复过程。所述恢复计时器的恢复时间和所述恢复计数器的计数值可以是网络设备配置的，也可以是预设值。
S106、网络设备接收终端设备发送的波束失败恢复请求。
在一些实施例中，网络设备接收到波束失败恢复请求之后，还可以向终端设备发送波束失败恢复响应，终端设备接收波束失败恢复响应，即执行S107和S108。
该终端设备可以通过检测控制资源集合(CORESET)和搜索空间集合(search space set)内的C-RNTI加扰或者MCS-C-RNTI加扰的DCI作为BFRR。
该CORESET和/或search space set可以是网络设备为该终端设备配置的专用的CORESET和/或search space set，用于在该终端设备发送波束失败请求后，网络设备发送对波束失败恢复请求信息的响应信息的下行控制资源。
还应理解，本实施例中，并不对波束失败恢复流程中S101和S102的时间先后顺序进行限定，可以是S102在S101之前，也可以是S101在S102之前，还可以是S102和S101同时进行。还应理解，S107和S108是可选地步骤。
在终端设备确定波束失败时，在任意的PUSCH上向网络设备发送用于承载波束失败恢复请求信息的MAC-CE，用于承载波束失败恢复请求信息的MAC-CE若可以在任意PUSCH传输，可能造成该MAC-CE一次传输的可靠性较低，需要依靠重传保证MAC-CE传输成功，造成波束失败恢复时延的增加。
例如，若某个PUSCH资源由某个上行授权(ul grant)调度，若该ul grant指示的码率较高，那么BFRQ的传输正确率较低，需要依靠重传提高BFRQ传输的可靠性，从而，增加了波束失败恢复的时延。
为了解决上述问题，本申请实施例提供一种发送波束失败恢复请求的方法，该方法包括：选择特定的PUSCH资源，在该PUSCH资源上发送至少一个波束失败恢复请求。或者，在任意的PUSCH资源上发送至少两个波束失败恢复请求。从而，通过限制BFRQ传输的PUSCH资源或者通过发送多个相同的BFRQ提高传输可靠性，降低了波束失败恢复时延。
下面将结合附图对本申请实施例的实施方式进行详细描述。
本申请实施例的技术方案可以应用于各种通信系统，例如：全球移动通讯(global system of mobile communication，GSM)系统、码分多址(code division multiple access， CDMA)系统、宽带码分多址(wideband code division multiple access，WCDMA)系统、通用分组无线业务(general packet radio service，GPRS)、LTE系统、LTE频分双工(frequency division duplex，FDD)系统、LTE时分双工(time division duplex，TDD)、通用移动通信系统(univeRMal mobile telecommunication system，UMTS)、全球互联微波接入(worldwide interoperability for microwave access，WiMAX)通信系统、未来的第五代(5th generation，5G)移动通信系统或新无线(new radio，NR)等，本申请所述的5G移动通信系统包括非独立组网(non-standalone，NSA)的5G移动通信系统和/或独立组网(standalone，SA)的5G移动通信系统。本申请提供的技术方案还可以应用于未来的通信系统，如第六代移动通信系统。通信系统还可以是PLMN网络、设备到设备(device-to-device，D2D)网络、机器到机器(machine to machine，M2M)网络、IoT网络或者其他网络。
图2是本申请的实施例应用的通信系统的架构示意图。如图2所示，该通信系统200包括网络设备210和终端设备220。终端设备220通过无线的方式与网络设备210相连。图2只是示意图，该通信系统中还可以包括其它设备，如还可以包括核心网设备、无线中继设备和无线回传设备，在图2中未画出。核心网设备与网络设备可以是独立的不同的物理设备，也可以是将核心网设备的功能与网络设备的逻辑功能集成在同一个物理设备上，还可以是一个物理设备上集成了部分核心网设备的功能和部分的网络设备的功能。终端设备可以是固定位置的，也可以是可移动的。本申请的实施例对该通信系统中包括的终端设备、核心网设备、无线接入网设备和终端设备的数量不做限定。
该通信系统200处于单载波场景或载波聚合场景(carrier aggregation，CA)中，该通信系统200包括网络设备210和终端设备220，网络设备210与终端设备220通过无线网络进行通信，当终端设备220检测到网络设备210和终端设备220之间的链路发生故障后，终端设备220向网络设备210发送BFRQ。可选地，网络设备210接收到该BFRQ后，向终端设备220发送波束失败恢复响应(beam failure recovery response，BFRR)或重新配置链路。
应理解，图2中网络设备210下可以包括一个或多个小区。例如，包括第一小区和第二小区，若终端设备和该网络设备在第二小区的链路发生故障，该第一小区可以辅助该第二小区进行链路恢复，例如，该终端设备可以在属于该第一小区的上行资源上向该网络设备发送该BFRQ信息，该终端设备可以在属于该第二小区的下行资源上接收该网络设备发送的该BFRR信息。
当通信系统200的传输方向为上行传输时，终端设备220为发送端，网络设备210为接收端，当通信系统200的传输方向为下行传输时，网络设备210为发送端，终端设备220为接收端。
图3是一种适用本申请的通信系统300。该通信系统300处于双链接(dual connectivity，DC)或多点协作传输(coordinated multipoint transmission/reception，CoMP)的场景中，该通信系统300包括网络设备310、网络设备320和终端设备330，网络设备310为终端设备330初始接入时的网络设备，负责与终端设备330之间的RRC通信，网络设备320是在RRC重配置时添加的，用于提供额外的无线资源。配置了载波聚合 的终端设备330与网络设备310和网络设备320相连，网络设备310和终端设备330之间的链路可以为称之为第一链路，网络设备320和终端设备330之间的链路可以称之为第二链路。
当网络设备310和网络设备320可以都向终端设备330配置用于传输BFRQ的上行资源时，当该第一链路或者第二链路发生故障，则终端设备330可以在用于传输BFRQ的上行资源上向网络设备310或者网络设备320发送BFRQ，网络设备310或者网络设备320收到该BFRQ后，向终端设备330发送BFRR。
特别地，若该网络设备320没有配置用于传输BFRQ的上行资源，那么当该第二链路发生故障时，该终端设备330可以通过该网络设备310恢复该第二链路。
上述适用本申请的通信系统仅是举例说明，适用本申请的通信系统不限于此，例如，通信系统中包括的网络设备和终端设备的数量还可以是其它的数量，或者采用单基站、多载波聚合的场景、双链接的场景或设备到设备(device to device，D2D)通信场景。
应理解，本申请实施例的技术方案可以应用于载波聚合场景下的一个小区辅助另一个小区或者多个小区恢复链路。或者是双链接场景下，一个小区组内的一个小区辅助另一个小区或者多个小区恢复链路。
应理解，本申请实施例的技术方案还可以应用于单载波或载波聚合或双链接场景下，一个小区在该小区的资源上恢复本小区的波束失败。
应理解，本申请实施例中的技术方案可以适用于主小区(Pcell)是高频或者低频，辅小区(Scell)是高频或者低频的情况，例如，当Pcell是低频，Scell是高频。在一种可能的实现方式中，对于没有配置上行资源的Scell，可以使用Pcell的上行资源辅助Scell恢复链路。通常低频和高频是相对而言的，也可以以某一特定频率为分界，例如6GHz。
应理解，本申请实施例的技术方案还可以应用于多点协作传输(coordinated multipoint transmission/reception，CoMP)场景下，一个TRP辅助另一个TRP恢复链路。其中CoMP可以为非相干联合发送(non coherent joint transmission，NCJT)、相干联合发送(coherent joint transmission，CJT)、联合发送(joint transmission，JT)等中的一种或多种场景。
本申请实施例中的终端设备可以指用户设备、接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。终端设备还可以是蜂窝电话、无绳电话、会话启动协议(session initiation protocol，SIP)电话、无线本地环路(wireless local loop，WLL)站、个人数字助理(personal digital assistant，PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备，未来5G网络中的终端设备或者未来演进的公用陆地移动通信网络(public land mobile network，PLMN)中的终端设备等，本申请实施例对此并不限定。
作为示例而非限定，在本申请实施例中，该终端设备还可以是可穿戴设备。可穿戴设备也可以称为穿戴式智能设备，是应用穿戴式技术对日常穿戴进行智能化设计、开发出可以穿戴的设备的总称，如眼镜、手套、手表、服饰和鞋等。可穿戴设备即直 接穿在身上，或是整合到用户的衣服或配件的一种便携式设备。可穿戴设备不仅仅是一种硬件设备，更是通过软件支持以及数据交互、云端交互来实现强大的功能。广义穿戴式智能设备包括功能全、尺寸大、可不依赖智能手机实现完整或者部分的功能，例如：智能手表或智能眼镜等，以及只专注于某一类应用功能，需要和其它设备如智能手机配合使用，如各类进行体征监测的智能手环、智能首饰等。
此外，在本申请实施例中，终端设备还可以是物联网(internet of things，IoT)系统中的终端设备，IoT是未来信息技术发展的重要组成部分，其主要技术特点是将物品通过通信技术与网络连接，从而实现人机互连，物物互连的智能化网络。在本申请实施例中，IOT技术可以通过例如窄带(narrow band)NB技术，做到海量连接，深度覆盖，终端省电。
此外，在本申请实施例中，终端设备还可以包括智能打印机、火车探测器、加油站等传感器，主要功能包括收集数据(部分终端设备)、接收网络设备的控制信息与下行数据，并发送电磁波，向网络设备传输上行数据。
本申请实施例中的网络设备可以是用于与终端设备通信的设备，该网络设备可以是全球移动通信(global system for mobile communications，GSM)系统或码分多址(code division multiple access，CDMA)中的基站(base transceiver station，BTS)，也可以是宽带码分多址(wideband code division multiple access，WCDMA)系统中的基站(NodeB，NB)，还可以是LTE系统中的演进型基站(evolved NodeB、eNB或eNodeB)，还可以是云无线接入网络(cloud radio access network，CRAN)场景下的无线控制器，或者该网络设备可以为中继站、接入点、车载设备、可穿戴设备以及未来5G网络中的网络设备或者未来演进的PLMN网络中的网络设备等，本申请实施例并不限定。
本申请实施例中的网络设备可以是无线网络中的设备，例如将终端接入到无线网络的无线接入网(radio access network，RAN)节点。目前，一些RAN节点的举例为：基站、下一代基站gNB、发送接收点(transmission reception point，TRP)、演进型节点B(evolved Node B，eNB)、家庭基站、基带单元(baseband unit，BBU)，或WiFi系统中的接入点(access point，AP)等。在一种网络结构中，网络设备可以包括集中单元(centralized unit，CU)节点、或分布单元(distributed unit，DU)节点、或包括CU节点和DU节点的RAN设备。
本申请主要应用于5G NR系统。本申请也可以应用于其它的通信系统，只要该通信系统中存在实体需要发送传输方向指示信息，另一个实体需要接收该指示信息，并根据该指示信息确定一定时间内的传输方向。示例的，图4为本申请实施例提供的一种通信系统示例图。如图3所示，基站和终端设备1～终端设备6组成一个通信系统。在该通信系统中，终端设备1～终端设备6可以发送上行数据给基站，基站接收终端设备1～终端设备6发送的上行数据。基站也可以向终端设备1～终端设备6发送下行数据，终端设备1～终端设备6接收下行数据。此外，终端设备4～终端设备6也可以组成一个通信系统。在该通信系统中，终端设备5可以接收终端设备4或终端设备6发送的上行信息，终端设备5向终端设备4或终端设备6发送的下行信息。
网络设备和终端设备可以部署在陆地上，包括室内或室外、手持或车载；也可以部署在水面上；还可以部署在空中的飞机、气球和人造卫星上。本申请的实施例对网 络设备和终端设备的应用场景不做限定。
网络设备和终端设备之间可以通过授权频谱(licensed spectrum)进行通信，也可以通过免授权频谱(unlicensed spectrum)进行通信，也可以同时通过授权频谱和免授权频谱进行通信。网络设备和终端设备之间可以通过6千兆赫(gigahertz，GHz)以下的频谱进行通信，也可以通过6GHz以上的频谱进行通信，还可以同时使用6GHz以下的频谱和6GHz以上的频谱进行通信。本申请的实施例对网络设备和终端设备之间所使用的频谱资源不做限定。
在本申请的实施例中，时域符号可以是正交频分复用(orthogonal frequency division multiplexing，OFDM)符号，也可以是单载波频分复用(single carrier-frequency division multiplexing，SC-FDM)符号。如果没有特别说明，本申请实施例中的符号均指时域符号。
可以理解的是，本申请的实施例中，PDSCH、PDCCH和PUSCH只是作为下行数据信道、下行控制信道和上行数据信道一种举例，在不同的系统和不同的场景中，数据信道和控制信道可能有不同的名称，本申请的实施例对此并不做限定。
接下来，对发送波束失败恢复请求的方法进行详细说明。图5为本申请实施例提供的一种发送波束失败恢复请求的方法流程图。如图5所示，该方法可以包括：
S501、终端设备确定第一资源。
在终端设备确定波束失败后，需要向网络设备发送波束失败恢复请求。在一些实施例中，终端设备先确定用于发送波束失败恢复请求的第一资源，再在第一资源上发送波束失败恢复请求，从而，通过限制BFRQ传输的PUSCH资源，降低波束失败恢复时延。
应理解，终端设备确定波束失败的过程可以参考S101，此处不再赘述。
示例的，如图6所示，终端设备可以采用以下S501a～S501d中任一种方式确定第一资源。
S501a、终端设备根据波束失败事例计数器确定第一资源。
在一些实施例中，网络设备可以通过RRC信令或MAC-CE信令为终端设备所属的小区配置波束失败检测参数。波束失败检测参数包括波束失败事例最大次数(beamFailureInstanceMaxCount)。终端设备为一个小区或者一个小区组维护一个波束失败事例计数器(beam failure instance counter，BFI counter)以实现波束失败的检测。当BFI counter为0时，表示该小区或小区组未出现波束失败的情况，该小区或小区组的链路质量较好，因此，终端设备可以选择波束失败事例计数器为0的小区的资源确定为第一资源。
应理解，一个小区组可以包括一个或多个小区。小区组可以是指MCG或SCG。小区组还可以是由网络设备配置的，或者可以是通过其他方式指示或确定的。小区组还可以有其它定义或指示方法，本申请实施例对小区组的定义或指示方法不作限定。
应理解，BFI counter的具体使用方法可以参考S101，此处不再赘述。
S501b、终端设备根据子载波间隔确定第一资源。
在一些实施例中，终端设备可以接收网络设备发送的一个或多个指示信息，该一个或多个指示信息用于指示K个资源，该K个资源可以为PUSCH资源。或者，网络 设备预先为终端设备配置了K个资源。其中，K为整数，K≥1。可选地，资源可以是指在时间单元上的正交频分复用(orthogonal frequency division multiplexing，OFDM)符号。时间单元可以是指时隙、子时隙、微时隙等。该K个资源可以是频分复用的资源，或者可以是时分复用的资源，或者可以是码分复用的资源。
由于子载波间隔越大，一个OFDM符号长度越短。最大子载波间隔的资源可以较快的完成传输。因此，终端设备可以选择K个资源的子载波间隔中最大子载波间隔的资源确定为第一资源，以较快的完成波束失败请求的传输。
终端设备可以根据子载波间隔确定第一资源，所述第一资源的子载波间隔在K个资源的子载波间隔中最大。
或者可以描述为，终端设备根据子载波间隔确定第一资源，所述第一资源所属的单元载波的子载波间隔是在K个资源所属的单元载波的子载波间隔中最大的。
或者可以描述为，终端设备根据子载波间隔确定第一资源，所述第一资源所属的小区的子载波间隔在K个资源所属的小区的子载波间隔中最大的。
S501c、终端设备根据重复标识确定第一资源。
在一些实施例中，网络设备通过RRC信令或MAC-CE信令或DCI信令为终端设备配置携带有重复标识的资源。终端设备可以将携带重复标识的资源确定为第一资源。该重复标识指示该资源可以用于重复传输多个相同的信息。或者说携带重复标识的资源的传输可靠性较高，或者说携带重复标识的资源可以用于URLLC业务的传输，为该业务分配的资源需要保证高可靠低时延的传输。因此在携带重复标识的资源上传输波束失败请求可以保证波束失败请求传输的可靠性，及时完成波束失败恢复，减少波束失败恢复时延。
其中，携带重复标识的资源，还可以描述为配置了重复标识的资源或者配置了重复标识参数的资源。重复标识还可以称为“聚合因子”。
也就是说，终端设备可以根据聚合因子(Aggregation Factor)确定第一资源，所述第一资源配置了聚合因子。该聚合因子指示PUSCH资源承载的数据或信息的重复次数。可理解地，该重复次数一般大于1。
S501d、终端设备根据调制编码方式确定第一资源。
在一些实施例中，网络设备通过RRC信令或MAC-CE信令或DCI信令为终端设备配置L个资源，还为该L个资源指示相应的调制编码方式，L为整数，L≥1。终端设备可以选择L个资源对应的调制编码方式中最小调制编码方式的资源确定为第一资源。由于较小的调制编码方式，会采用低阶调制方式和低速率的信道编码方案，来保证通信质量，通过选取较小的调制编码方式可以保证波束失败恢复请求的传输可靠性，进而避免波束失败恢复请求的重传，降低了波束失败恢复的时延。可选的，所述第一资源对应的调制编码方式可以指第一资源的指示信息所指示的调制编码方式。
可选地，本申请实施例中的“调制编码方式”还可以替换为“调制阶数”，还可以替换为“码率”。
需要说明的是，上述S501a至S501d中的多个所述的规则可以结合使用，或者单独使用，本申请不予限定。
在另一些实施例中，S501a与S501b可以结合使用。例如，终端设备选择到两个 以上的波束失败事例计数器为0的小区的资源，此时，终端设备可以选择波束失败事例计数器为0的小区的资源中子载波间隔最大的资源为第一资源。
在另一些可能的实施方式中，S501a与S501c可以结合使用。例如，终端设备选择到两个以上的波束失败事例计数器为0的小区的资源，此时，终端设备可以选择波束失败事例计数器为0的小区的资源中配置了聚合因子的资源为第一资源。
在另一些可能的实施方式中，S501a与S501d可以结合使用。例如，终端设备选择到两个以上的波束失败事例计数器为0的小区的资源，此时，终端设备可以选择波束失败事例计数器为0的小区的资源中对应的调制编码方式最小的资源为第一资源。
在另一些实施例中，S501a、S501b、S501c和S501d中任意两个或者任意三个可以结合使用或者这四个可以结合使用。当多个规则结合使用时，需要定义哪个规则优先使用(也即优先根据哪个规则选择资源)。
可选地，S501a的优先级大于以下规则中的至少一个规则的优先级：S501b、S501c和S501d。如：S501a、S501b、S501c和S501d均存在，那么S501a的优先级最高。
可选地，S501b的优先级大于S501c和S501d的优先级；或者S501b的优先级大于S501c或者S501d的优先级。
可选地S501c的优先级大于S501d的优先级。
终端设备可以先根据优先级较高的规则选择资源，当该资源有多个资源时，再根据次高优先级的规则在该多个资源中选择资源，以此类推。
示例性的：S501a、S501b和S501c结合使用，或者S501a、S501b和S501d结合使用。例如：如果从波束失败事例计数器为0的小区的资源中，终端设备选择到两个以上子载波间隔最大的资源，终端设备还可以根据重复标识或调制编码方式确定第一资源。例如，确定两个以上子载波间隔最大的资源中携带重复标识或调制编码方式最小的资源为第一资源。
在终端设备确定了发送波束失败恢复请求的第一资源后，执行S502。
S502、终端设备在第一资源上发送N个波束失败恢复请求。
终端设备可以多次重复发送波束失败恢复请求。该波束失败恢复请求信息可以承载在MAC-CE上。
示例性的，终端设备在一个或多个PUSCH资源上发送N个相同的承载波束失败恢复请求信息的MAC-CE。其中，N为大于或等于1的整数。
可理解的，在一种可能的实现方式中第一资源属于第一时间单元，终端设备可以在第一时间单元内重复发送N次第一资源，该每个第一资源上承载一个或多个波束失败恢复请求。例如，终端设备可以在N个第一时间单元内重复发送N次第一资源，该每个第一资源上承载一个波束失败恢复请求。
N个波束失败恢复请求可以同时发送，或者分时发送。
在一种可能的实现方式中，N为大于1的整数，N个波束失败恢复请求在一个第一资源上发送。在另一种可能的实现方式中，N为大于1的整数，N个波束失败恢复请求分别在多个第一资源上发送。例如：N个波束失败恢复请求分别在多个第一资源上发送。
在一种实施例中，N>1，N个波束失败恢复请求独立编码。通过重复发送多个波 束失败恢复请求，提高波束失败恢复请求传输的可靠性。其中，独立编码是指两个信息在发送前独立编码，编码后产生两个比特序列，将该编码后的两个比特序列分别映射至不同的时频空资源上(时域资源、频域资源和空域资源中至少有一个不同)，并由一个设备发送给另一个设备。另一个设备接收后对两个资源上的两个比特序列分别解码获得该两个信息。例如：第一信息与第二信息。独立编码是指第一信息与第二信息是分别进行编码获得。比如，第一信息由Q1个比特表示，第二信息由Q2个比特表示，终端设备对该Q1个比特进行编码获得Q1’个比特，对该Q2个比特进行编码获得Q2’个比特。该终端设备将该Q1’个比特和Q2’个比特发送至网络设备。网络设备对该Q1’个比特进行解码，得到该第一信息；对该Q2’个比特进行解码，得到该第二信息。
在另一些实施例中，当N>1时，N个波束失败恢复请求相同。N个波束失败恢复请求相同是指N个波束失败恢复请求包括的内容完全相同。
应理解，本申请各实施例中，波束失败恢复请求可以用于指示波束失败小区的小区信息。波束失败恢复请求可以包括波束失败小区的标识信息和/或恢复波束失败小区的参考信号信息。或者说，该波束失败小区的小区信息可以包括波束失败小区的标识信息和/或恢复波束失败小区的参考信号信息。终端设备可以将该波束失败恢复请求承载在MAC-CE上向网络设备发送。应理解，本申请各实施例中，波束失败小区的标识信息可以是波束失败小区的标识，或者可以是波束失败小区的索引，或者可以是指示波束失败小区标识的指示信息(如通过位图指示小区标识，位图中的每个bit位对应一个小区。当该bit位为1时，该bit位对应的小区发生波束失败；当该bit位为0时，该bit位对应的小区没有发生波束失败)。
应理解，本申请各实施例中，恢复波束失败小区的参考信号信息，可以是恢复波束失败小区的参考信号资源索引，还可以是恢复波束失败小区的参考信号资源索引和该参考信号资源的信号质量，还可以是未识别恢复波束失败小区的参考信号资源的指示信息。其中，恢复波束失败小区的参考信号资源可以是CSI-RS资源，或者可以是SSB资源。
在另一些实施例中，N为预定义的或者配置的。所谓预定义可以理解为标准或者协议中预先定义的。终端设备和网络设备可以预先存储该预定义的N的取值，N为整数，N≥1。例如，N＝2。在终端设备需要发送波束失败恢复请求时，可以从本地获取N，确定发送波束失败恢复请求的次数。所谓配置可以理解为网络设备通过信令为终端设备配置N的取值。信令可以是RRC信令、MAC-CE信令或者DCI信令。
在另一些实施例中，终端设备可以根据上行授权(ul grant)的传输码率调整N。例如，N是根据MCS确定的。该MCS可以是指示PUSCH的指示信息所指示的(如DCI)，还可以是通过RRC信令或者MAC-CE或系统信息等其他信息指示的。当MCS大于或等于预设门限时，N＝P；当MCS小于预设门限时，N＝Q；其中，P和Q均为整数，P≥0，Q≥0，P≥Q。例如P＝2，Q＝1。预设门限可以是网络设备配置的，还可以是协议预先定义的。可选地，本申请实施例中的“MCS”还可以替换为“调制阶数”，还可以替换为“码率”。
S503、网络设备确定第一资源。
网络设备可以根据波束失败事例计数器、子载波间隔、重复标识和调制编码方式中至少一个参数确定第一资源。具体解释可以参考S501的阐述，不予赘述。
在一些实施例中，网络设备确定第一资源是可选步骤。
S504、网络设备在第一资源上接收N个波束失败恢复请求。
网络设备接收到N个波束失败恢复请求后，对N个波束失败恢复请求分别独立解码。例如，网络设备接收后对两个资源上的两个比特序列分别解码获得该两个信息。例如：第一信息与第二信息。独立编码是指第一信息与第二信息是分别进行编码获得。比如，第一信息由Q1个比特表示，第二信息由Q2个比特表示，终端设备对该Q1个比特进行编码获得Q1’个比特，对该Q2个比特进行编码获得Q2’个比特。该终端设备将该Q1’个比特和Q2’个比特发送至网络设备。网络设备对该Q1’个比特进行解码，得到该第一信息；对该Q2’个比特进行解码，得到该第二信息。
本申请实施例提供的发送波束失败恢复请求的方法，通过限制BFRQ传输的PUSCH资源或者通过发送多个相同的BFRQ提高传输可靠性，降低了波束失败恢复时延。
在一些实施例中，终端设备可以根据上述方法从第二资源中选择第一资源发送链路失败恢复请求信息。
应理解，承载N个重复BFRQ的资源可以由以下几种可能的方式：
方式1：终端设备可以选择S104中网络设备配置或指示PUSCH中的一个PUSCH资源发送N个重复的BFRQ(也可以称为N个相同的BFRQ MAC-CE)。可选地，N个重复的BFRQ信息独立编码。
方式2：终端设备可以选择S104中网络设备配置或指示PUSCH中的多个PUSCH资源发送N个重复的BFRQ(也可以称为N个相同的BFRQ MAC-CE)。例如，终端设备选择2个PUSCH资源分别承载2个BFRQ MAC-CE。
对于方式1和方式2，终端设备根据预设规则选择PUSCH资源发送波束失败恢复请求信息是可选地步骤。也即终端设备可以不执行终端设备根据预设规则选择PUSCH资源发送波束失败恢复请求信息。此时终端设备选择的PUSCH资源可以取决于终端设备的实现。
方式3：终端设备在S501确定的第一资源上承载该N个相同的BFRQ。第一资源可以是终端设备根据S501所述的方法从第二资源中确定得到的。
需要说明的是，本实施例还可以包括其他步骤，如波束失败检测，具体的参考S101的阐述。网络设备还可以为终端设备配置第二资源，终端设备从第二资源中选择一个或多个资源作为第一资源，在第一资源上发送N个波束失败恢复请求。终端设备获得第二资源的方法，具体的可以参考上述实施例S104的阐述，不予赘述。
应理解，本申请各实施例中，”N个相同的BFRQ”、“N个波束失败恢复请求”和“N个重复BFRQ”可以简称为第二请求信息。
本申请实施例提供的发送波束失败恢复请求的方法，通过限制发送链路失败恢复请求信息的资源提高该信息传输可靠性，降低该信息传输时延，实现高可靠低时延的链路失败恢复。
图7为本申请实施例提供的一种发送波束失败恢复请求的方法流程图。如图7所 示，该方法可以包括：
S701、终端设备确定该终端设备与网络设备之间的波束失败。
在一些实施例中，终端设备可以测量波束失败检测参考信号资源集合(beam failure detection RS set)，确定该终端设备与网络设备之间的波束失败。详细解释可以参考S101的阐述，不予赘述。
S702、终端设备识别新链路。
在一些实施例中，终端设备可以识别候选参考信号资源集合(candidate beam identification RS set)中的参考信号。终端设备可以根据该参考信号恢复链路。详细解释可以参考S102的阐述，不予赘述。
S703、终端设备发送N个波束失败恢复请求。
终端设备可以重复两次或两次以上发送波束失败恢复请求。该波束失败恢复请求信息可以承载在MAC-CE上。
示例性的，终端设备在一个或多个PUSCH资源上发送N个相同的承载波束失败恢复请求信息的MAC-CE。其中，N为大于或等于2的整数。N个波束失败恢复请求独立编码。N为预定义的或者配置的。或者，N是根据MCS确定的。详细解释可以参考S502的阐述，不予赘述。
S704、网络设备接收N个波束失败恢复请求。
S705、网络设备向该终端设备发送波束失败恢复响应。
S706、终端设备接收网络设备发送的波束失败恢复响应。
本申请实施例提供的发送波束失败恢复请求的方法，通过将波束失败恢复请求信息重复多次发送提高该信息传输可靠性，降低该信息传输时延，实现高可靠低时延的链路失败恢复。
可以理解的是，为了实现上述实施例中功能，网络设备和终端设备包括了执行各个功能相应的硬件结构和/或软件模块。本领域技术人员应该很容易意识到，结合本申请中所公开的实施例描述的各示例的单元及方法步骤，本申请能够以硬件或硬件和计算机软件相结合的形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行，取决于技术方案的特定应用场景和设计约束条件。
图8和图9为本申请的实施例提供的可能的通信装置的结构示意图。这些通信装置可以用于实现上述方法实施例中终端设备或网络设备的功能，因此也能实现上述方法实施例所具备的有益效果。在本申请的实施例中，该通信装置可以是如图2所示的终端设备220，也可以是如图2所示的网络设备210，还可以是应用于终端设备或网络设备的模块(如芯片)。
如图8所示，通信装置800包括处理单元810和收发单元820。通信装置800用于实现上述图5～图7中所示的方法实施例中终端设备或网络设备的功能。
当通信装置800用于实现图5所示的方法实施例中终端设备的功能时：收发单元820用于执行S502；处理单元810用于执行S501。
当通信装置800用于实现图5所示的方法实施例中网络设备的功能时：收发单元820用于执行S504；处理单元810用于执行S503。
当通信装置800用于实现图6所示的方法实施例中终端设备的功能时：收发单元 820用于执行S502；处理单元810用于执行S501a～S501d。
当通信装置800用于实现图6所示的方法实施例中网络设备的功能时：收发单元820用于执行S504；处理单元810用于执行S503。
当通信装置800用于实现图7所示的方法实施例中终端设备的功能时：收发单元820用于执行S703和S706；处理单元810用于执行S701～S702。
当通信装置800用于实现图7所示的方法实施例中网络设备的功能时：收发单元820用于执行S704和S705。
有关上述处理单元810和收发单元820更详细的描述可以直接参考图5～图7所示的方法实施例中相关描述直接得到，这里不加赘述。
如图9所示，通信装置900包括处理器910和接口电路920。处理器910和接口电路920之间相互耦合。可以理解的是，接口电路920可以为收发器或输入输出接口。可选的，通信装置900还可以包括存储器930，用于存储处理器910执行的指令或存储处理器910运行指令所需要的输入数据或存储处理器910运行指令后产生的数据。
当通信装置900用于实现图5～图7所示的方法时，处理器910用于执行上述处理单元810的功能，接口电路920用于执行上述收发单元820的功能。
当上述通信装置为应用于终端设备的芯片时，该终端设备芯片实现上述方法实施例中终端设备的功能。该终端设备芯片从终端设备中的其它模块(如射频模块或天线)接收信息，该信息是网络设备发送给终端设备的；或者，该终端设备芯片向终端设备中的其它模块(如射频模块或天线)发送信息，该信息是终端设备发送给网络设备的。
当上述通信装置为应用于网络设备的芯片时，该网络设备芯片实现上述方法实施例中网络设备的功能。该网络设备芯片从网络设备中的其它模块(如射频模块或天线)接收信息，该信息是终端设备发送给网络设备的；或者，该网络设备芯片向网络设备中的其它模块(如射频模块或天线)发送信息，该信息是网络设备发送给终端设备的。
可以理解的是，本申请的实施例中的处理器可以是中央处理单元(Central Processing Unit，CPU)，还可以是其它通用处理器、数字信号处理器(Digital Signal Processor，DSP)、专用集成电路(Application Specific Integrated Circuit，ASIC)、现场可编程门阵列(Field Programmable Gate Array，FPGA)或者其它可编程逻辑器件、晶体管逻辑器件，硬件部件或者其任意组合。通用处理器可以是微处理器，也可以是任何常规的处理器。
本申请的实施例中的方法步骤可以通过硬件的方式来实现，也可以由处理器执行软件指令的方式来实现。软件指令可以由相应的软件模块组成，软件模块可以被存放于随机存取存储器(Random Access Memory，RAM)、闪存、只读存储器(Read-Only Memory，ROM)、可编程只读存储器(Programmable ROM，PROM)、可擦除可编程只读存储器(Erasable PROM，EPROM)、电可擦除可编程只读存储器(Electrically EPROM，EEPROM)、寄存器、硬盘、移动硬盘、CD-ROM或者本领域熟知的任何其它形式的存储介质中。一种示例性的存储介质耦合至处理器，从而使处理器能够从该存储介质读取信息，且可向该存储介质写入信息。当然，存储介质也可以是处理器的组成部分。处理器和存储介质可以位于ASIC中。另外，该ASIC可以位于网络设备或终端设备中。当然，处理器和存储介质也可以作为分立组件存在于网络设备或终端设 备中。
通过以上的实施方式的描述，所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，仅以上述各功能模块的划分进行举例说明，实际应用中，可以根据需要而将上述功能分配由不同的功能模块完成，即将装置的内部结构划分成不同的功能模块，以完成以上描述的全部或者部分功能。
在本申请所提供的几个实施例中，应该理解到，所揭露的装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述模块或单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个装置，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是一个物理单元或多个物理单元，即可以位于一个地方，或者也可以分布到多个不同地方。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机程序或指令。在计算机上加载和执行所述计算机程序或指令时，全部或部分地执行本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、网络设备、用户设备或者其它可编程装置。所述计算机程序或指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机程序或指令可以从一个网站站点、计算机、服务器或数据中心通过有线或无线方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是集成一个或多个可用介质的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质，例如，软盘、硬盘、磁带；也可以是光介质，例如，数字视频光盘(digital video disc，DVD)；还可以是半导体介质，例如，固态硬盘(solid state drive，SSD)。
在本申请的各个实施例中，如果没有特殊说明以及逻辑冲突，不同的实施例之间的术语和/或描述具有一致性、且可以相互引用，不同的实施例中的技术特征根据其内在的逻辑关系可以组合形成新的实施例。
本申请中，“至少一个”是指一个或者多个，“多个”是指两个或两个以上。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B的情况，其中A,B可以是单数或者复数。在本申请的文字描述中，字符“/”，一般表示前后关联对象是一种“或”的关系；在本申请的公式中，字符“/”，表示前后关联对象是一种“相除”的关系。
可以理解的是，在本申请的实施例中涉及的各种数字编号仅为描述方便进行的区分，并不用来限制本申请的实施例的范围。上述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何在本申请揭露的技术范围内的变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (30)

  1. 一种发送波束失败恢复请求的方法，其特征在于，包括：
    确定第一资源；
    在所述第一资源上发送N个波束失败恢复请求，N为大于1或等于1的整数。
  2. 一种接收波束失败恢复请求的方法，其特征在于，包括：
    确定第一资源；
    在所述第一资源上接收N个波束失败恢复请求，N为大于1或等于1的整数。
  3. 根据权利要求1或2所述的方法，其特征在于，所述确定第一资源，包括：
    根据波束失败事例计数器确定所述第一资源，所述第一资源所属的小区的波束失败事例计数器为0。
  4. 根据权利要求1-3中任一项所述的方法，其特征在于，所述确定第一资源，包括：
    根据子载波间隔确定所述第一资源，所述第一资源的子载波间隔在K个资源的子载波间隔中最大，K为整数，K≥1。
  5. 根据权利要求1-4中任一项所述的方法，其特征在于，所述确定第一资源，包括：
    根据重复标识确定所述第一资源，所述第一资源配置了重复标识。
  6. 根据权利要求1-5中任一项所述的方法，其特征在于，所述确定第一资源，包括：
    根据调制编码方式确定所述第一资源，所述第一资源对应的调制编码方式在L个资源对应的调制编码方式中最小，L为整数，L≥1。
  7. 根据权利要求1-6中任一项所述的方法，其特征在于，所述N为预定义的或者配置的。
  8. 根据权利要求1-6中任一项所述的方法，其特征在于，所述N是根据调制编码方式MCS确定的。
  9. 根据权利要求8中所述的方法，其特征在于，所述N是根据MCS确定的，包括：
    当所述MCS大于或等于预设门限时，所述N＝P；当所述MCS小于预设门限时，所述N＝Q；其中，所述P和所述Q均为整数，P≥0，Q≥0，P≥Q。
  10. 根据权利要求1-9中任一项所述的方法，其特征在于，当N>1时，所述N个波束失败恢复请求独立编码。
  11. 根据权利要求1-10中任一项所述的方法，其特征在于，当N>1时，所述N个波束失败恢复请求相同。
  12. 一种发送波束失败恢复请求的方法，其特征在于，包括：
    在第一资源上发送N个波束失败恢复请求，N为整数，N≥2；
    接收波束失败恢复响应BFRR。
  13. 一种接收波束失败恢复请求的方法，其特征在于，包括：
    在第一资源上接收N个波束失败恢复请求，N为整数，N≥2；
    发送波束失败恢复响应BFRR。
  14. 根据权利要求12或13所述的方法，其特征在于，所述N个波束失败恢复请求独立编码，所述N个波束失败恢复请求相同。
  15. 一种通信装置，其特征在于，包括：
    处理单元，用于确定第一资源；
    发送单元，用于在所述第一资源上发送N个波束失败恢复请求，N为大于1或等于1的整数。
  16. 一种通信装置，其特征在于，包括：
    处理单元，用于确定第一资源；
    接收单元，用于在所述第一资源上接收N个波束失败恢复请求，N为大于1或等于1的整数。
  17. 根据权利要求15或16所述的装置，其特征在于，所述处理单元，用于：
    根据波束失败事例计数器确定所述第一资源，所述第一资源所属的小区的波束失败事例计数器为0。
  18. 根据权利要求15-17中任一项所述的装置，其特征在于，所述处理单元，用于：
    根据子载波间隔确定所述第一资源，所述第一资源的子载波间隔在K个资源的子载波间隔中最大，K为整数，K≥1。
  19. 根据权利要求15-18中任一项所述的装置，其特征在于，所述处理单元，用于：
    根据重复标识确定所述第一资源，所述第一资源配置了重复标识。
  20. 根据权利要求15-19中任一项所述的装置，其特征在于，所述处理单元，用于：
    根据调制编码方式确定所述第一资源，所述第一资源对应的调制编码方式在L个资源对应的调制编码方式中最小，L为整数，L≥1。
  21. 根据权利要求15-20中任一项所述的装置，其特征在于，所述N为预定义的或者配置的。
  22. 根据权利要求15-20中任一项所述的装置，其特征在于，所述N是根据MCS确定的。
  23. 根据权利要求22中所述的装置，其特征在于，所述N是根据MCS确定的，包括：
    当所述MCS大于或等于预设门限时，所述N＝P；当所述MCS小于预设门限时，所述N＝Q；其中，所述P和所述Q均为整数，P≥0，Q≥0，P≥Q。
  24. 根据权利要求15-23中任一项所述的装置，其特征在于，当N>1时，所述N个波束失败恢复请求独立编码。
  25. 根据权利要求15-24中任一项所述的装置，其特征在于，当N>1时，所述N个波束失败恢复请求相同。
  26. 一种通信装置，其特征在于，包括：
    发送单元，用于在第一资源上发送N个波束失败恢复请求，N为整数，N≥2；
    接收单元，用于接收波束失败恢复响应BFRR。
  27. 一种通信装置，其特征在于，包括：
    接收单元，用于在第一资源上接收N个波束失败恢复请求，N为整数，N≥2；
    发送单元，用于发送波束失败恢复响应BFRR。
  28. 根据权利要求26或27所述的装置，其特征在于，所述N个波束失败恢复请求独立编码，所述N个波束失败恢复请求相同。
  29. 一种通信装置，其特征在于，包括：至少一个处理器、存储器和总线，其中，所述存储器用于存储计算机程序，使得所述计算机程序被所述至少一个处理器执行时实现如权利要求1、3-11、12和14中任一项所述的发送波束失败恢复请求的方法，或者，实现如权利要求2、3-11、13和14中任一项所述的接收波束失败恢复请求的方法。
  30. 一种计算机可读存储介质，其特征在于，包括：计算机软件指令；
    当所述计算机软件指令在通信装置或内置在通信装置的芯片中运行时，使得所述通信装置执行如权利要求1、3-11、12和14中任一项所述的发送波束失败恢复请求的方法，或者，实现如权利要求2、3-11、13和14中任一项所述的接收波束失败恢复请求的方法。
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