WO2020034877A1 - 链路失败恢复方法及相关设备 - Google Patents

链路失败恢复方法及相关设备 Download PDF

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Publication number
WO2020034877A1
WO2020034877A1 PCT/CN2019/099468 CN2019099468W WO2020034877A1 WO 2020034877 A1 WO2020034877 A1 WO 2020034877A1 CN 2019099468 W CN2019099468 W CN 2019099468W WO 2020034877 A1 WO2020034877 A1 WO 2020034877A1
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Prior art keywords
information
cell
reference signal
uplink resource
resource
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PCT/CN2019/099468
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English (en)
French (fr)
Inventor
张荻
刘鹍鹏
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华为技术有限公司
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Priority to EP19849687.9A priority Critical patent/EP3836693B1/en
Publication of WO2020034877A1 publication Critical patent/WO2020034877A1/zh
Priority to US17/174,041 priority patent/US11855740B2/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0014—Three-dimensional division
    • H04L5/0023—Time-frequency-space
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0868—Hybrid systems, i.e. switching and combining
    • H04B7/088—Hybrid systems, i.e. switching and combining using beam selection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
    • H04B7/0695—Hybrid systems, i.e. switching and simultaneous transmission using beam selection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/046—Wireless resource allocation based on the type of the allocated resource the resource being in the space domain, e.g. beams
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/19—Connection re-establishment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/11—Allocation or use of connection identifiers

Definitions

  • the present application relates to the field of communication technologies, and in particular, to a link failure recovery method and related equipment.
  • the signals based on the beamforming technology may include broadcast signals, synchronization signals, and cell-specific reference signals.
  • the base station configures an uplink resource set for each carrier.
  • Each uplink resource in the uplink resource set is associated with a reference signal.
  • the terminal device finds that the link fails, it can use
  • the uplink resource corresponding to the newly identified reference signal in the uplink resource set sends link failure recovery request information, so that the base station rebuilds a new link.
  • this link failure recovery method requires the base station to configure an uplink resource set for each carrier to send link failure request information, and the resource overhead is large.
  • the present application provides a link failure recovery method and related equipment, which can reduce the resource overhead required for link failure recovery.
  • an embodiment of the present application provides a method for recovering a link failure.
  • a terminal device sends first indication information on a first uplink resource according to information about a space-related parameter, where the information about the space-related parameter is Is information for transmitting or receiving spatially related parameters of a channel and / or a signal of the first cell; the first indication information is used to indicate that the link of the i-th cell in the N second cells fails, and the first An uplink resource is an uplink resource of the first cell.
  • N is an integer greater than or equal to 1
  • i is an integer greater than or equal to 1 and less than or equal to N.
  • the terminal device uses the information of the spatial related parameters of the first cell to send or receive the channel to send the link failure of the i-th cell in the N second cells to avoid
  • the network device needs to configure multiple uplink resources associated with multiple reference signal resources of the second cell to indicate a link failure of the second cell. Therefore, the embodiment of the present application reduces the resource overhead required for link failure recovery.
  • uplink and downlink when uplink and downlink are reciprocal, it avoids that the network device configures multiple uplink resources associated with multiple candidate downlink reference signals of the second cell for sending link failure request information of the second cell, thereby Saved resource overhead.
  • this embodiment prevents the network device from configuring multiple uplink resources associated with multiple uplink reference signals of the second cell for sending link failure request information of the second cell, thereby saving resources. Overhead.
  • the link failure is an emergency.
  • the channel used to send or receive the first cell and / The information of the spatial related parameters of the OR signal and the uplink resources are used to send the related information of the link failure of the second cell, thereby saving resource overhead.
  • the information of the spatially related parameters includes quasi-collocation (QCL) hypothesis information, spatially related information (Spatial Relation), and the like. The following describes optional implementation manners of the information about the spatial related parameters.
  • the information about the spatial related parameters may be a general concept, that is, the specific information of the spatial related parameters is not configured, but the terminal device may poll multiple transmission beams, or multiple The sending beam corresponding to the receiving beam sends the first indication information; or the terminal device may use the beamforming method to send the first indication information, that is, the terminal device sends the first indication information on the first uplink resource.
  • the information about the spatial related parameters may be QCL information or spatial related information associated with a reference signal specified by the network device, which is not limited in the embodiment of the present application.
  • the information about the spatial related parameters is quasi co-location QCL hypothesis information for receiving a physical downlink control channel PDCCH of the first cell. That is, the information of the spatial correlation parameter is a transmit beam corresponding to a receive beam used by the terminal device to receive the PDCCH of the first cell.
  • the QCL assumption information is QCL assumption information of a control resource set with the smallest index value or identification in the control resource set of the first cell.
  • There are one or more PDCCHs in the first cell and the one or more PDCCHs can be carried on one or more CORESETs.
  • the control with the smallest index value or identification among the multiple CORESET resources to be used for PDCCH detection is controlled.
  • the QCL hypothesis information of the resource set is used as the information of the spatially related parameters for transmitting the first indication information.
  • the QCL hypothetical information is the QCL hypothetical information of the common search space set CSS of the first cell, or the QCL hypothetical information of the control resource set where the public search space set CSS of the first cell is located .
  • the information about the spatial related parameters is spatial related information used to send a physical uplink control channel PUCCH of the first cell. That is, the information about the spatial related parameters is a transmission beam used by the terminal device to transmit the PUCCH of the first cell.
  • the spatial related information of the PUCCH is the spatial related information of the PUCCH with the smallest index value or identification in the PUCCH of the first cell, or the PUCCH used to send scheduling request information for the i-th cell. Space related information.
  • the information about the spatial related parameters is information about the spatial related parameters of the synchronization signal broadcast channel block SSB resource of the first cell, that is, the information about the spatial related parameters is The transmission beam corresponding to the reception beam adopted by the terminal device to the SSB.
  • the SSB is an SSB received when the terminal device initially accesses the first cell.
  • the information of the spatial related parameters is spatial related information of a channel used to carry link failure recovery request information of the first cell.
  • the information about the spatial related parameters described in the foregoing various embodiments can increase the probability that the network device receives the first indication information.
  • the terminal device may send the first indication information after sending the link failure recovery request information of the first cell.
  • the terminal device may use the space-related information of the channel on which the terminal device carries the link failure recovery request information of the first cell to send the first indication information. That is, the information of the spatial related parameters is the spatial related information of the channel used to send the link failure recovery request information of the first cell. This example can be applied to Case 1 and Case 2 of the above three cases.
  • the terminal device may send the first indication information after receiving the link failure recovery response information of the first cell.
  • the terminal device sends the first indication information by using the space-related information of the channel on which the terminal device can receive the link failure recovery response information of the first cell. That is, the information of the spatial related parameters is the spatial related information of the channel used to carry the link failure response information of the first cell. It can also be said that the information of the spatial related parameters is the spatial related information of the channel used to carry the link failure recovery request information of the first cell, and the network device can receive the link failure recovery request information and return the link of the first cell Failure response message. This example can be applied to Case 1 and Case 2 of the above three cases.
  • the terminal device may send the link failure recovery request information of the first cell multiple times, but the reliability of the space-related information of the channel that can receive the link failure recovery response information returned by the network device may be better. Therefore, Compared with the above example, this example can further increase the probability that the network device receives the first indication information.
  • the terminal device may send the first indication information after receiving the reconfiguration information of the first cell.
  • the terminal device can successfully restore the link of the first cell by using the reconfiguration information sent by the network device.
  • the terminal device may use the reconfiguration information to send the first indication information; or, the link has been reestablished in the first cell, and the terminal device may use the information about the space-related parameters described in the foregoing various embodiments, such as space
  • the related parameter information is the QCL hypothesis information or the spatial correlation information of the first cell activation, such as the QCL hypothesis information for receiving the PDCCH of the first cell, or the spatial correlation for transmitting the PUCCH of the first cell.
  • the terminal device may send the first indication information by using the foregoing implementation manner of the spatially related parameter information without considering whether the first cell is The link failure occurs, or the link failure recovery process of the first cell, this example can be adapted to any one of the above three cases. This example can report the first instruction information in a more timely manner.
  • the terminal device After the terminal device determines that the i-th cell has a link failure, the terminal device sends the first instruction information by using the foregoing implementation of the spatially related parameter information, but the network device has not received In the response information returned by each cell, it was found that the link failure of the first cell also occurred.
  • the information of the spatial related parameters may be in a manner described in the foregoing various examples.
  • the first uplink resource is an uplink resource for sending the first indication information, rather than limiting the first uplink resource to an uplink resource in the first uplink resource set.
  • the first uplink resource may also include multiple implementation manners, which are described in detail below.
  • the first uplink resource is a physical random access channel PRACH resource in a first uplink resource set, and the first uplink resource set is configured to send the first cell.
  • PRACH resource in a first uplink resource set
  • the first uplink resource set is configured to send the first cell.
  • the first uplink resource is a PRACH resource associated with a first reference signal in a first uplink resource set, and the first reference signal is a QCL hypothesis activated with the first cell.
  • a reference signal associated with information or space-related information, the first uplink resource set is a set of resources configured to send link failure recovery request information of the first cell. Because the channel quality of the reference signal associated with the activated QCL information or the space-related information is relatively good, the probability of successfully sending the first indication information can be increased.
  • a PRACH resource associated with a second reference signal in the first uplink resource set is used to send link failure recovery request information of the first cell, and the second reference signal is inactive with the first cell QCL hypothesis information or reference signals associated with spatially related information.
  • the first uplink resource used for sending the link failures of the N second cells may be pre-agreed or signaled, and the first uplink resource used for sending the link failure of the second cell is associated with the activated QCL information or space-related information in the first uplink resource set.
  • the reference signal is associated with the PRACH resource; and, the pre-protocol agreement or signaling configuration is used to send the uplink resource used for the link failure of the first cell is related to the inactive QCL information or space related information in the first uplink resource set PRACH resources associated with the associated reference signal.
  • the network device when the network device fails to receive the link sent by the PRACH resource associated with the activated QCL information or the reference signal associated with the space-related information, it can be determined that a link failure has occurred in a cell in the second cell; the network device is in When receiving a link failure from a PRACH resource associated with a reference signal associated with inactive QCL information or spatial related information, it can be determined that a link failure has occurred in the first cell.
  • a link failure occurs in the first cell, such as situations 1 to 3 described above.
  • the first uplink resource may be the first uplink resource set used to send the first The PRACH resource of the cell link failure recovery request information.
  • the second uplink resource set is M configured for the N second cells in the uplink resources of the first cell for sending link failure recovery request information. Collection of PRACH resources. That is, the network device may configure M PRACH resources on the uplink resources of the first cell for sending the link failure recovery of the N second cells, and the M PRACH resources are referred to as the second uplink resource set. Therefore, the first uplink resource is a physical random access channel PRACH resource in the second uplink resource set.
  • M is an integer greater than or equal to 1 and less than or equal to N.
  • one PRACH resource of the second uplink resource set corresponds to one second cell of the N second cells one to one; the first The uplink resource is a PRACH resource corresponding to the i-th cell in the second uplink resource set.
  • the network device since the network device receives the first indication information, it can know which cell the link failure occurred based on the first uplink resource. Therefore, the first indication information is also used to indicate the first indication information. Identification information of i cells.
  • one PRACH resource in the second uplink resource set corresponds to one second cell group among the P second cell groups, and the N
  • the second cell includes the P second cell groups, and one second cell group includes one or more second cells, where P is an integer greater than or equal to 1 and less than N;
  • the first uplink resource is all The PRACH resource corresponding to the second cell group to which the i-th cell belongs in the second uplink resource set.
  • one second cell group in the P second cell groups corresponds to one PRACH resource in the second uplink resource set
  • the first indication information is further used to indicate a second cell group to which the i-th cell belongs. Identification information. That is, the network device can know which second cell group among the N second cells the cell in which the link failure has occurred based on the first uplink resource.
  • the first uplink resource is a physical uplink configured on the uplink resource of the first cell and dedicated to sending link failure recovery request information of the N second cells.
  • Control channel PUCCH resources are a physical uplink configured on the uplink resource of the first cell and dedicated to sending link failure recovery request information of the N second cells.
  • the first indication information includes at least one of identification information of the i-th cell, third reference signal information, and fourth reference signal information; wherein the third reference signal information is channel quality Information of a reference signal greater than or equal to a first threshold, and the fourth reference signal information is information of a reference signal whose channel quality is less than or equal to a second threshold.
  • the terminal device sends the first instruction information by using the dedicated PUCCH resource, and can more promptly notify the network device of the related information of the cell where the link failure has occurred.
  • the link failure recovery method may further include the following steps: the terminal device receives the first signaling, and the first signaling is used to indicate a third uplink resource; the terminal The device sends second indication information on the third uplink resource, where the second indication information is used to indicate at least one of identification information, third reference signal information, and fourth reference signal information of the i-th cell;
  • the third reference signal information is information of a reference signal whose channel quality is greater than or equal to the first threshold
  • the fourth reference signal information is information of a reference signal whose channel quality is less than or equal to the second threshold.
  • the network device after receiving the first instruction information, can identify, according to the first uplink resource adopted by the first instruction information, that the cell where the link failure has occurred is a cell in the N second cells and a chain occurrence.
  • the second cell group in which the cell that fails the link or the cell in which the link fails occurs therefore, the network device may also trigger the second second cell group in which the N second cells and the i-th cell are located through the first signaling Or the candidate reference signal resource set of the i-th cell. Therefore, in the prior art, the network device periodically triggers the candidate reference signal resource set of each cell and sends the resource overhead caused by sending each reference signal.
  • the first signaling triggers the candidate reference signal resource set, which can be understood as the first signaling instructs the sending of the candidate reference signal resource set.
  • the third uplink resource is a physical uplink shared channel PUSCH resource or a PRACH resource.
  • the PUSCH resource is a resource dedicated to sending link failures of the N second cells, for example, dedicated to sending second indication information.
  • the PRACH resource is a PRACH resource in the first uplink resource set of the first cell.
  • each PRACH resource in the first uplink resource set is not only associated with the downlink reference signal in the candidate reference signal resource set of the first cell, but also with the candidate reference signal resource set of each cell in the N second cells.
  • the network device can learn that the terminal device responds to the occurrence of the link based on the first instruction information and the downlink reference signal associated with the third uplink resource.
  • the first indication information needs to adopt the implementation manner of the identification information of the cell capable of notifying the network device of the link failure in the foregoing implementation manner. It can be seen that, compared with the multiple uplink resources associated with multiple reference signal resources configured for the second cell in the prior art and used to indicate that the link of the second cell fails, the embodiment can still save resource overhead.
  • one PRACH resource corresponds to one second cell
  • the network device can obtain the identification information of the second cell based on the PRACH resource in the second uplink resource set adopted by the first instruction information.
  • the third uplink resource is a PRACH resource in the first uplink resource set, and learns a candidate downlink reference signal determined by the terminal device for the second cell.
  • the candidate reference signal resource set of the second cell includes X downlink reference signals
  • the network device needs to configure X PRACH resources for the second cell, and this embodiment is the first
  • the two cells can report the above information by configuring a PRACH resource. Therefore, this embodiment can still save resource overhead.
  • the first signaling is MAC-CE signaling or DCI signaling.
  • the MAC-CE signaling or the DCI signaling is dedicated to indicate the third uplink resource.
  • the DCI signaling may be scrambled by a dedicated wireless network temporary identifier, or the DCI signaling carries a dedicated instruction to notify the terminal device that the PUSCH resource scheduled by the DCI is a resource for sending link failure recovery request information.
  • the PRACH resources in the first uplink resource set and the second uplink resource set configured by the network device for the terminal device may also be replaced with PUCCH resources, that is, the first uplink resource set is a link failure for sending the first cell A set of PUCCH resources of the recovery request information, and the second uplink resource set is a set of PUCCH resources for sending the link failure recovery request information of the N second cells.
  • PUCCH resources that is, the first uplink resource set is a link failure for sending the first cell A set of PUCCH resources of the recovery request information, and the second uplink resource set is a set of PUCCH resources for sending the link failure recovery request information of the N second cells.
  • This embodiment may be combined with any one of the various embodiments corresponding to the first uplink resource. For example, if the first uplink resource is a PRACH resource in the first uplink resource set, the corresponding uplink resource may be replaced by the first uplink resource: Is a PUCCH resource in the first uplink resource set.
  • this embodiment is different from a PUCCH resource dedicated to sending link failure recovery request information of N second cells in that the PUCCH resource of this embodiment may not carry candidate reference signal information, such as a third reference signal Information and / or fourth reference signal information, so this embodiment also needs to combine the above-mentioned related content of the first signaling, that is, the reference signal information reported using the third uplink resource indicated by the first signaling, such as Three reference signal information and / or fourth reference signal information.
  • candidate reference signal information such as a third reference signal Information and / or fourth reference signal information
  • the first indication information or the second indication information is used to indicate identification information of the i-th cell, and is also used to indicate the third reference signal information and / or the first In the case of four reference signal information, the identification information of the i-th cell is independently encoded with the third reference signal information and / or the fourth reference signal information.
  • the independent coding means that the identification information and the third reference signal information and / or the fourth reference signal information are first indication information or second indication information obtained by encoding separately, and the network device needs to identify the identification information, Only the number of bits of the third reference signal information and / or the fourth reference signal information can be known, that is, the third reference signal information and / or the fourth reference signal information can be identified.
  • the identification information is represented by Q1 bits
  • the third reference signal information and / or the fourth reference information is represented by Q2 bits
  • the terminal device encodes the Q1 bits to obtain the first information
  • the second information is obtained by encoding
  • the first indication information or the second indication information includes the first information and the second information.
  • the network device decodes the Q1 bit carrying the identification information in the first instruction information or the second instruction information to obtain the identification information; and the network device uses the identification information to carry the bearer in the first instruction information or the second instruction information.
  • the Q2 bits of the third reference information and / or the fourth reference information are decoded to obtain the third reference information and / or the fourth reference information.
  • the size of the load of the first indication information and / or the size of the load of the second indication information is related to the first uplink resource, which will be described below from different implementation manners.
  • the first uplink resource for sending the first indication information is a PUCCH resource configured by the network device for the N second cells and dedicated to sending link failure recovery request information, then:
  • the first indication information needs to indicate identification information of the i-th cell, and third reference signal information and / or fourth reference signal information. Since both the terminal device and the network device know the number of the second cell, the number of bits of the identification information of the i-th cell is a fixed value, such as The number of bits of the third reference signal information and / or the fourth reference signal information is related to the number of downlink reference signals in the candidate reference signal resource set of each cell identified by the identification information.
  • the number of bits of the third reference signal information is based on the candidate reference signal resource set with the largest number of downlink reference signals among the plurality of candidate reference signal resource sets corresponding to the N second cells. It is determined that the number of bits of the fourth reference signal information is determined based on a set of failure detection reference signal resources with the largest number of downlink reference signals in a plurality of beam failure detection reference signal resource sets corresponding to the N second cells. Assuming that the candidate reference signal resource set with the largest number of downlink reference signals includes Y, optionally, the load of the first indication information may be based on to make sure.
  • the number of bits of the third reference signal information changes as the number of downlink reference signals in the candidate reference signal resource set of the cell indicated by the identification information changes.
  • the number of bits of the fourth reference signal information changes based on a change in the number of downlink reference signals in the beam failure detection reference signal resource set of the cell indicated by the identification information.
  • the first indication information cannot inform the network device of the identification information of the cell where the link failure occurred.
  • the number of bits of the identification information in the second indication information is related to the total number of cells connected to the terminal device; if the load of the second indication information is a fixed value, the number of bits of the third reference signal information in the second indication information is According to the candidate reference signal resource set with the largest number of downlink reference signals in the candidate reference signal resource set of all cells of the terminal device, the number of bits of the fourth reference signal information is detected according to the beam failure detection of the reference signal resource set in all cells of the terminal device The beam failure detection with the largest number of reference signals is related to the reference signal resource set. If the load of the second indication information is a non-fixed value, the number of bits of the third reference signal information in the second indication information is indicated according to the identification information.
  • the number of downlink reference signals in the candidate reference signal resource set of the cell changes, and the number of bits of the fourth reference signal information is a change in the number of downlink reference signals in the reference signal resource set according to the beam failure detection of the cell indicated by the identification information And change.
  • the total number of the cells may be the number of cells in the terminal device that need to recover from link failures.
  • a plurality of cells sharing the same spatially related parameter information is called a cell group, and the total number of the cells may be the number of multiple cell groups corresponding to different spatially related parameter information.
  • the total number of cells may be the number of cells without uplink resources, or may be the number of cells with high frequencies.
  • the first uplink resource is an activated QCL or a PRACH resource associated with a downlink reference signal associated with space-related information in the first uplink resource set, and is used to send the first cell
  • the uplink resource of the link failure recovery request information is the PRACH resource associated with the inactive QCL information or the reference signal associated with the space-related information in the first uplink resource set; or the first uplink resource is in the second uplink resource set
  • the first indication information can indicate that a link failure has occurred in a cell in N second cells, at this time, the number of bits of identification information in the second indication information is related to N, such as
  • the number of bits of the third reference signal information in the second indication information is based on the downlink reference in the candidate reference signal resource set of each of the N second cells.
  • the candidate reference signal resource set with the largest number of signals is related, and the number of bits of the fourth reference signal information is based on the beam failure detection of each of the N second cells.
  • the beam failure detection with the largest number of downlink reference signals in the reference signal resource set The reference signal resource set is related; if the load of the second indication information is a non-fixed value, the number of bits of the third reference signal information in the second indication information is the candidate reference signal resource set of the second cell indicated by the identification information The number of mid-downlink reference signals changes, and the number of bits of the fourth reference signal information changes according to the number of downlink reference signals in the beam failure detection reference signal resource set of the second cell indicated by the identification information.
  • the first uplink resource is a PRACH resource corresponding to the i-th cell in the second uplink resource set, that is, the first indication information is also used.
  • the second indication information does not need to include the identification information of the i-th cell, and only needs to include the third reference signal information and / or the fourth reference signal information.
  • the first indication information is also used to indicate identification information of the i-th cell. That is, in this embodiment, due to the association relationship between the PRACH resource and each second cell in the second uplink resource set, This enables the network device to determine the cell identification information according to the PRACH resource receiving the first indication information, instead of the first indication information including the cell identification information.
  • the load size of the second indication information is a fixed value
  • the number of bits of the third reference signal information and the candidate reference signal with the largest number of downlink reference signals in the candidate reference signal resource set of each of the N second cells The resource set is related, and the number of bits of the fourth reference signal information is related to the beam failure detection reference signal resource set with the largest number of downlink reference signals in the N second cell beam failure detection reference signal resource set; if the first The load of the second indication information is a non-fixed value, so the number of bits of the third reference signal information is related to the number of downlink reference signals in the candidate reference signal resource set of the i-th cell, and the number of bits of the fourth reference signal information is The number of downlink reference signals in the beam failure detection reference signal resource set of the i cells is related.
  • the first indication information is further used to indicate The identification information of the second cell group to which the i-th cell belongs, and the identification information in the second indication information may be identification information of the i-th cell within the group of the second cell group.
  • the size of the load of the second indication information is a fixed value, the number of bits of the identification information is determined according to the second cell group including the second cell group with the largest number of second cells among the P second cell groups.
  • the number of bits is related to the candidate reference signal resource set with the largest number of downlink reference signals in the plurality of candidate reference signal resource sets corresponding to the second cell group to which the i-th cell belongs, and the number of bits of the fourth reference signal information is related to the i-th
  • the beam failure detection reference signal resource set with the largest number of downlink reference signals in the multiple beam failure detection reference signal resource sets corresponding to the second cell group to which the cell belongs is related.
  • the number of bits of the identification information is determined according to the number of second cells included in the second cell group to which the i-th cell belongs.
  • the number of bits is related to the number of downlink reference signals in the candidate reference signal resource set of the i-th cell, that is, the number of downlink reference signals in the candidate reference signal resource set of the cell indicated by the identification information; the bit of the fourth reference signal information The number is related to the number of downlink reference signals in the beam failure detection reference signal resource set of the i-th cell, that is, the number of downlink reference signals in the beam failure detection reference signal resource set of the cell indicated by the identification information.
  • the first cell is a cell where a resource for sending scheduling request information for the i-th cell is located.
  • the embodiment of the present application also provides a link failure recovery method, which is described from a network device side.
  • the detailed description of the same content of the link failure recovery method as the link failure recovery method described in the above aspect may refer to the above content, and will not be described in detail here.
  • the method for recovering a link failure includes: receiving, by the network device, first indication information on a first uplink resource according to the information of the space-related parameters; and sending the network device according to the first indication information.
  • Link failure response information wherein the information of the spatially related parameters is information of spatially related parameters used to send or receive channels and / or signals of the first cell; the first indication information is used to indicate N second
  • the link of the i-th cell in the cell fails, the N is an integer greater than or equal to 1, the i is an integer greater than or equal to 1 and less than or equal to the N; the first uplink resource is the Uplink resources of the first cell.
  • the network device sending the link failure response information according to the first instruction information may include: the network device determines, according to the first instruction information and / or the first uplink resource, identification information of a cell where the link failure has occurred, and the candidate of the cell.
  • the downlink reference signal information the network device sends the link failure response information on the downlink resources of the cell identified by the identification information by using the space-related information associated with the downlink reference signal information.
  • the information about the spatial related parameters is quasi-co-location QCL hypothesis information for receiving a physical downlink control channel PDCCH of the first cell;
  • the information about the spatial related parameters is spatial related information used to send a physical uplink control channel PUCCH of the first cell.
  • the information about the spatial related parameters is a synchronization signal broadcast channel block SSB resource of the first cell
  • the information of the spatial related parameters is spatial related information of a channel used to carry link failure recovery request information of the first cell.
  • the QCL hypothesis information is QCL hypothesis information of a control resource set with the smallest index value or identification in the control resource set of the first cell, or a public search of the first cell
  • the spatial related information is spatial related information of the PUCCH with the smallest index value or identification in the PUCCH of the first cell, or is used to send scheduling for the i-th cell.
  • PUCCH space related information of request information is spatial related information of the PUCCH with the smallest index value or identification in the PUCCH of the first cell, or is used to send scheduling for the i-th cell.
  • the method further includes: the network device sends a first signaling, the first signaling is used to indicate a third uplink resource; the network device is in the third uplink Receiving second indication information on a resource, where the second indication information is used to indicate at least one of identification information, third reference signal information, and fourth reference signal information of the i-th cell; wherein the third reference The signal information is information of a reference signal having a channel quality greater than or equal to a first threshold, and the fourth reference signal information is information of a reference signal having a channel quality less than or equal to a second threshold; and the network device according to the first instruction information Sending link failure response information includes: the network device sending link failure response information according to the first indication information and the second indication information.
  • the first uplink resource is a physical random access channel PRACH resource in a first uplink resource set, and the first uplink resource set is configured to send the first cell.
  • PRACH resource in a first uplink resource set
  • the first uplink resource set is configured to send the first cell.
  • the first uplink resource is a PRACH resource associated with a first reference signal in the first uplink resource set, and the first reference signal is QCL hypothesis information activated with the first cell.
  • the first uplink resource set is a set of resources configured to send link failure recovery request information of the first cell.
  • a PRACH resource associated with a second reference signal in the first uplink resource set is used to send link failure recovery request information of the first cell, and the second reference signal is an AND A reference signal associated with the first cell inactive QCL hypothesis information or spatial related information.
  • the first uplink resource is a physical random access channel PRACH resource in a second uplink resource set
  • the second uplink resource set is in an uplink resource of the first cell
  • a set of M PRACH resources configured to send link failure recovery request information for the N second cells, where M is an integer greater than or equal to 1 and less than or equal to the N.
  • one PRACH resource of the second uplink resource set corresponds to one second cell of the N second cells one by one;
  • the first uplink resource is a PRACH resource corresponding to the i-th cell in the second uplink resource set.
  • the first indication information is further used to indicate identification information of the i-th cell.
  • a PRACH resource in the second uplink resource set corresponds to a second cell group in the P second cell groups, so
  • the N second cells include the P second cell groups, and one second cell group includes one or more second cells, where P is a positive integer greater than or equal to 1 and less than N; the first The uplink resource is a PRACH resource corresponding to the second cell group to which the i-th cell belongs in the second uplink resource set.
  • the first indication information is further used to indicate identification information of a second cell group to which the i-th cell belongs.
  • the first uplink resource is a physical uplink control configured on the uplink resource of the first cell and dedicated to sending link failure recovery request information of the N second cells.
  • Channel PUCCH resource is a physical uplink control configured on the uplink resource of the first cell and dedicated to sending link failure recovery request information of the N second cells.
  • the first indication information includes at least one of identification information of the i-th cell, third reference signal information, and fourth reference signal information;
  • the third reference signal information is information of a reference signal whose channel quality is greater than or equal to the first threshold
  • the fourth reference signal information is information of a reference signal whose channel quality is less than or equal to the second threshold.
  • the first signaling is further configured to trigger a candidate reference of the N second cells, the i-th cell, or a second cell group in which the i-th cell is located. Signal resource collection.
  • the second uplink resource is a physical uplink shared channel PUSCH resource or a PRACH resource.
  • the first indication information or the second indication information is used to indicate identification information of the i-th cell, and is also used to indicate the third reference signal information and / or In the fourth reference signal information, the identification information of the i-th cell is independently encoded with the third reference signal information and / or the fourth reference signal information.
  • a size of a load of the second indication information is related to the first uplink resource.
  • a size of the load of the first instruction information and / or a load of the second instruction information is a fixed value; the load of the first instruction information and / or the second The size of the load of the indication information is related to the candidate reference signal resource set with the largest number of downlink reference signals in the plurality of candidate reference signal resource sets corresponding to the N second cells.
  • the first cell is a cell in which a resource for sending scheduling request information for the i-th cell is located.
  • the present application also provides a link failure recovery method.
  • the terminal device sends first indication information on the first uplink resource; the first indication information is used to indicate that there are cells in which the link fails in the N second cells; the first uplink resource is the first cell Uplink resources.
  • the terminal device receives the first signaling; the first signaling is used to indicate the third uplink resource; the terminal device sends the second instruction information on the third uplink resource, and the second instruction information is used to indicate the first failed link in the N cells. At least one of the identification information, the third reference information, and the fourth reference information of the i cells.
  • the present application can inform the network device based on the uplink resource of the first cell, and there are cells with link failures in the N second cells, so that the network device can indicate the third uplink resource, and the terminal device can use the third uplink resource.
  • the identification information or reference information of the link failure is transmitted.
  • the third reference signal information is information of a reference signal whose channel quality is greater than or equal to a first threshold
  • the fourth reference signal information is information of a reference signal whose channel quality is less than or equal to a second threshold.
  • the sending, by the terminal device, the first indication information on the first uplink resource includes: sending, by the terminal device, the first indication information on the first uplink resource according to the information of the spatial related parameter; the The information about the spatial related parameters is information about the spatial related parameters used to send or receive the channel or signal of the first cell.
  • the space-related parameter information, the first indication information, the third uplink resource, and the second indication information please refer to the related content described in the first aspect above, and no longer here Elaborate.
  • the present application also provides a link failure recovery method.
  • a network device receives first indication information on a first uplink resource; the first indication information is used to indicate that there are cells in which link failure has occurred in N second cells; and N is greater than or An integer equal to 1; the first uplink resource is an uplink resource of a first cell; the network device sends a first signaling, the first signaling is used to indicate a third uplink resource; the network device is in the Receiving second indication information on a third uplink resource, where the second indication information is used to indicate at least one of identification information, third reference signal information, and fourth reference signal information of the i-th cell; wherein, the The third reference signal information is information of a reference signal whose channel quality is greater than or equal to a first threshold, and the fourth reference signal information is information of a reference signal whose channel quality is less than or equal to a second threshold; An instruction message and a second instruction message send link failure response information.
  • the network device can learn that there are cells with link failures in the N second cells based on the uplink resources of the first cell, so that the network device can indicate the third uplink resource, and the terminal device can The identification information or reference information of the link failure sent on the resource.
  • the receiving, by the network device, the first indication information on the first uplink resource includes: receiving, by the network device, the first indication information on the first uplink resource according to the information about the spatial related parameters; the The information about the spatial related parameters is information about the spatial related parameters used to send or receive the channel or signal of the first cell.
  • the space-related parameter information, the first indication information, the third uplink resource, and the second indication information please refer to the related content described in the first aspect above, and no longer here Elaborate.
  • the present application also provides a terminal device, which has some or all of the functions of the terminal device in the above method examples, for example, the functions of the terminal device may have the functions of some or all of the embodiments in this application. It may also have the function of implementing any one of the embodiments in this application separately.
  • the functions may be implemented by hardware, and may also be implemented by hardware executing corresponding software.
  • the hardware or software includes one or more units or modules corresponding to the functions described above.
  • the structure of the terminal device may include a sending unit and a receiving unit, and the sending unit and the receiving unit are configured to support communication between the terminal device and other devices.
  • the terminal device may further include a storage unit, which is configured to be coupled with the configuration unit and the sending unit, and stores program instructions and data necessary for the terminal device.
  • the terminal device may further include a processor, a transceiver, a memory, and the like to perform the functions of the above-mentioned sending unit, receiving unit, or storage unit.
  • the present application also provides a network device that has some or all of the functions of the network device in the above method examples.
  • the functions of the network device may have the functions of some or all of the embodiments in this application. It may also have the function of implementing any one of the embodiments in this application separately.
  • the functions may be implemented by hardware, and may also be implemented by hardware executing corresponding software.
  • the hardware or software includes one or more units or modules corresponding to the functions described above.
  • the structure of the network device may include a receiving unit and a sending unit.
  • the receiving unit and the sending unit are configured to support communication between the network device and other devices.
  • the network device may further include a storage unit.
  • the storage unit is used for coupling with the receiving unit and the sending unit, and stores program instructions and data necessary for the network device.
  • the receiving unit, the sending unit, and the storage unit may be a processor, a transceiver, a memory, and the like.
  • an embodiment of the present invention provides a communication system, and the system includes at least one network device and at least one terminal device in the foregoing aspects.
  • the system may further include other devices that interact with the terminal device and the network device in the solution provided by the embodiment of the present invention.
  • an embodiment of the present invention provides a computer storage medium for storing computer software instructions for the foregoing network device, which includes a program designed to execute any aspect of the foregoing method.
  • an embodiment of the present invention provides a computer storage medium for storing computer software instructions used by the foregoing terminal device, which includes a program designed to execute any aspect of the foregoing method.
  • the present application also provides a computer program product including instructions that, when run on a computer, causes the computer to perform the methods described in the above aspects.
  • the present application provides a chip system including a processor, configured to support functions involved in the foregoing aspects of a network device, for example, determining or processing data and / or information involved in the foregoing method.
  • the chip system further includes a memory, and the memory is configured to store program instructions and data necessary for the network device.
  • the chip system may be composed of chips, and may also include chips and other discrete devices.
  • the present application provides a chip system including a processor, configured to support a terminal device to implement the functions involved in the foregoing aspects, for example, generating or processing data and / or information involved in the foregoing methods.
  • the chip system further includes a memory, and the memory is configured to store program instructions and data necessary for the terminal device.
  • the chip system may be composed of chips, and may also include chips and other discrete devices.
  • FIG. 1 is a schematic structural diagram of a communication system according to an embodiment of the present application.
  • FIG. 2 is a schematic structural diagram of a communication system according to an embodiment of the present application.
  • FIG. 3 is a schematic flowchart of a link failure recovery method according to an embodiment of the present application.
  • FIG. 4 is a schematic flowchart of another link failure recovery method according to an embodiment of the present application.
  • FIG. 5 is a schematic diagram of a first uplink resource set according to an embodiment of the present application.
  • FIG. 6 is a schematic diagram of a second uplink resource set according to an embodiment of the present application.
  • FIG. 7 is a schematic diagram of a reference signal associated with QCL information or spatial related information according to an embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of a terminal device according to an embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of a network device according to an embodiment of the present application.
  • FIG. 10 is a schematic structural diagram of a device according to an embodiment of the present application.
  • FIG. 11 is a schematic structural diagram of another terminal device according to an embodiment of the present application.
  • FIG. 12 is a schematic structural diagram of another device according to an embodiment of the present application.
  • FIG. 13 is a schematic structural diagram of another network device according to an embodiment of the present application.
  • an embodiment herein means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application.
  • the appearances of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are they independent or alternative embodiments that are mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.
  • GSM Global System for Mobile Communications
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • TD-SCDMA Time Division Synchronous Code Division Multiple Access
  • Universal Mobile Communication System Universal Mobile Telecommunications System, Abbreviation: UMTS
  • LTE Long Term Evolution
  • New Radio New Radio, Abbreviation: NR
  • D2D device-to-device
  • M2M machine-to-machine
  • the network equipment involved in this application may refer to an entity used to send or receive information on the network side, such as a base station, or a transmission point (TP), a transmission point and a reception point, Abbreviations: TRP), relay equipment, or other network equipment with base station functions, etc., are not limited in this application.
  • the communication device involved in this application may be a centralized control module or another network device.
  • the communication device can configure a scrambling identifier associated with downlink control information configuration information or downlink control parameters for the terminal device; or configure multiple scrambling identifiers associated with different downlink control information configuration information or downlink control parameters.
  • the communication device and the network device may be the same device or different devices.
  • a terminal device is a device with a communication function, which may include a handheld device with a wireless communication function, a vehicle-mounted device, a wearable device, a computing device, or other processing devices connected to a wireless modem, and the like.
  • Terminal equipment can be called different names in different networks, for example: terminal equipment (user equipment), user equipment (abbreviation: UE), mobile station, user unit, relay, station, cell phone, personal Digital assistants, wireless modems, wireless communication devices, handheld devices, laptops, cordless phones, wireless local loop stations, etc.
  • the terminal device may refer to a wireless terminal device or a wired terminal device.
  • the wireless terminal device can be a device that provides voice and / or data connectivity to the user, a handheld device with a wireless connection function, or other processing device connected to a wireless modem, which can be accessed via a wireless access network (such as RAN, radio access network) to communicate with one or more core networks.
  • a wireless access network such as RAN, radio access network
  • the uplink resource set includes multiple Physical Random Access Channel (PRACH) resources, and candidate reference signals for the cell.
  • PRACH Physical Random Access Channel
  • the reference signals in the resource set correspond to the PRACH resources in the uplink resource set one-to-one, and are used to send link failure recovery request information for the cell.
  • the process for the terminal device to recover the link failure for the cell may include the following steps: the terminal device determines the link failure; the terminal device detects the channel quality of the reference signal in the candidate reference signal resource set, Determine a downlink reference signal with a channel quality greater than a preset threshold; the terminal device uses the PRACH resource associated with the downlink reference signal in the uplink resource set to send the link failure recovery request information; the network device sends a link failure response according to the link failure recovery request information Information; the terminal device detects the control resource set and obtains link failure response information.
  • the terminal device uses the PRACH resources associated with the downlink reference signal determined in the uplink resource set to send the link failure recovery request information. It can be seen that in the current link failure recovery method, for each cell, the network device needs to An uplink resource is configured for each downlink reference signal in a candidate reference signal resource set of a cell. Assuming that the candidate reference signal resource set of the cell includes 16 downlink reference signals, 16 uplink resources need to be configured for the cell, and the 16 Uplink resources can only be used to send link failure recovery request information. Each carrier corresponds to a cell, and each cell corresponds to a candidate reference signal resource set. It is required to configure multiple reference signal resources of each cell to associate multiple uplink resources for indicating that the second cell fails. Causes huge resource overhead.
  • an embodiment of the present application provides a link failure recovery method and related equipment.
  • a terminal device may send a first instruction on a first uplink resource according to information about spatial related parameters.
  • the indication information sends a link failure recovery response message to implement link failure recovery. Since the information of the spatially related parameters is information of the spatially related parameters used to send the channel and / or the signal of the first cell, the first uplink resource is the uplink resource of the first cell. In this way, the network device does not need to configure multiple uplink resources associated with multiple reference signal resources of the second cell for indicating that the link of the second cell fails, thereby reducing resource overhead.
  • FIG. 1 is a schematic structural diagram of a communication system 100 according to an embodiment of the present application.
  • the communication system 100 is in a carrier aggregation scenario (CA) or a dual link scenario (DC).
  • the communication system 100 includes a network device 110 and a terminal device 120.
  • the network device 110 and the terminal device 120 communicate through a wireless network.
  • the terminal device 120 detects that the link between the network device 110 and the terminal device 120 fails, the terminal device 120 sends a link failure recovery request (BFRQ) to the network device 110, and the network device 110 receives the BFRQ Then, a link failure recovery response (BFRR) is sent to the terminal device 120.
  • BFRQ link failure recovery request
  • BFRR link failure recovery response
  • the network device 110 in FIG. 1 may include multiple cells, for example, including the first cell and the second cell. If the link between the terminal device and the network device in the second cell fails, the first cell may assist The second cell performs link recovery.
  • the terminal device may send the BFRQ information to the network device on uplink resources belonging to the first cell, and the terminal device may receive the BFRQ information on downlink resources belonging to the second cell.
  • the BFRR information sent by the network device.
  • the terminal device 120 When the transmission direction of the communication system 100 is uplink transmission, the terminal device 120 is the transmitting end, and the network device 110 is the receiving end.
  • the transmission direction of the communication system 100 is the downlink transmission, the network device 110 is the transmitting end, and the terminal device 120 is the receiving end. end.
  • FIG. 2 is a schematic structural diagram of another communication system 200 according to an embodiment of the present application.
  • the communication system 200 is in a scenario of dual connectivity (DC), carrier aggregation (CA), or coordinated multipoint transmission / reception (CoMP).
  • the communication system 200 includes a network device 210, a network device 220, and
  • the terminal device 230 and the network device 210 are network devices when the terminal device 230 is initially accessed, and are responsible for RRC communication with the terminal device 230.
  • the network device 220 is added during RRC reconfiguration to provide additional wireless resources.
  • the terminal device 230 configured with carrier aggregation (CA) is connected to the network device 210 and the network device 220.
  • the link between the network device 210 and the terminal device 230 may be referred to as a first link.
  • the network device 220 and the terminal device 230 The link between them can be called a second link.
  • the terminal device 230 can transmit uplink resources for transmitting BFRQ.
  • the resource sends a BFRQ to the network device 210 or the network device 220.
  • the network device 210 or the network device 220 sends a BFRR to the terminal device 230.
  • the terminal device 230 can restore the second link through the network device 210.
  • the network device 210 in the communication system 200 may be a primary network device of the terminal device, and the network device 220 may be one of a plurality of secondary network devices of the terminal device.
  • the network device 210 may be a primary base station and the network device 220 may be a secondary base station; or the network device 210 may be a secondary base station and the network device 220 may be a primary base station.
  • the network device 210 may be a base station where a primary cell / primary serving cell (PCell) is located, a base station where a secondary primary cell (PScell) is located, and a special cell (special cell). (SpCell), or a transmission receiving node (TRP), a secondary cell / secondary serving cell (SCell), and the second network device may be an SCell
  • the base station where it is located may be TRP.
  • the network device 210 may be a base station where the TRP and SCell are located, and the network device 220 may be a base station where the PCell, PSCell, SpCell, TRP, and SCell are located.
  • the first cell may be PCell, PSCell, SpCell, or SCell
  • the second cell may be SCell
  • the first cell may be SCell
  • the second cell may be PCell, PSCell, SpCell, or SCell.
  • PCell The primary cell where the terminal device resides in the CA scenario.
  • PSCell a special secondary primary cell configured by the primary network device to the terminal device on the secondary network device through RRC connection signaling.
  • SCell a cell configured to a terminal device through RRC connection signaling, working on a secondary carrier (SCC), which can provide the terminal device with more wireless resources.
  • SCC secondary carrier
  • the SCell can have only downlink, or both uplink and downlink can exist.
  • SpCell For DC scenarios, SpCell refers to the PCell of the primary cell group (MSG) or PSCell of the secondary cell group (SCG); otherwise, as in the CA scenario, SpCell refers to PCell.
  • MSG primary cell group
  • SCG secondary cell group
  • the technical solutions in the embodiments of the present application may be applicable to a case 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 primary cell PCell
  • SCell secondary cell
  • the SCell is high frequency or low frequency.
  • the SCell is low frequency and SCell is high frequency
  • the SCell is not configured with uplink resources
  • the PCell is low frequency and has not been configured with PRACH resources or PUCCH resources for link failure detection.
  • low frequency and high frequency are relative, and a certain frequency may be used as a boundary, for example, 6 GHz.
  • the technical solution of the embodiment of the present application may be applied to a cell aggregation (CA) scenario in which a cell assists another cell or multiple cells to restore a link.
  • CA cell aggregation
  • a cell in a cell group assists another cell or multiple cells to restore the link.
  • a cell may belong to the same cell group as “another cell”, or may belong to different cell groups. Different cell groups mainly describe a DC scenario. A cell in cell group 1 may assist the cell group. The other cell of 2 resumes the link.
  • the cell in the MCG assists the cell in the SCG to recover the link.
  • the cell in the SCG assists the cell in the MCG to recover the link.
  • cell can be understood as “serving cell” and “carrier”.
  • the above communication system applicable to the present application is merely an example, and the communication system applicable to the present application is not limited thereto.
  • the number of network devices and terminal devices included in the communication system may be other numbers, or a single base station or multi-carrier Aggregated scenarios, dual-link scenarios, or device-to-device (D2D) communication scenarios.
  • D2D device-to-device
  • the network device in order to detect and recover the link failure, the network device needs to configure the terminal device with a reference signal resource set (for example, beam detection detection RS resource configuration or beam detection detection RS or failure detection resources) for beam failure detection and A set of reference signal resources (candidate, RS, list, candidate, RS, identification, resource, or failure, resource, or candidate, identification, RS) used to restore the link between the terminal device and the network device (also referred to as candidate reference signal resource set).
  • the reference signal used to detect the link failure may also be indicated in an implicit manner.
  • the reference signal associated with the TCI indicating the PDCCH is used as the reference signal for detecting the link failure.
  • the reference signal is a reference that meets the QCL relationship with the DMRS of the PDCCH. Signal, and is a reference signal sent periodically. Among them, the failure detection of the RS and the downlink physical control channel PDCCH demodulation reference signal in the set meet the QCL relationship or use the same TCI state as the PDCCH.
  • the reference channel quality information in the set such as reference Signal received power (reference signal power, RSRP), channel quality indicator (CQI), block error rate (BLER), signal to interference plus noise ratio (signal to interference plus noise ratio, SINR)
  • RSRP reference Signal received power
  • CQI channel quality indicator
  • BLER block error rate
  • SINR signal to interference plus noise ratio
  • the signal-to-noise ratio signal-to-noise ratio (signal noise ratio, SNR, etc.) is lower than a predetermined threshold, it is determined that the link fails.
  • the lower than the predetermined threshold may be the W consecutive lower than the predetermined threshold or the W lower than the predetermined threshold within
  • the link failure means that the signal quality of the reference signal used for the beam failure detection of the PDCCH is less than or equal to a preset threshold.
  • a preset threshold In the embodiments of the present application, these concepts have the same meaning.
  • the terminal device needs to select a reference signal resource whose channel quality information (such as RSRP, RSRQ, CQI, etc.) is higher than a predetermined threshold from the reference signal resource set for recovering the link.
  • the predetermined threshold may be configured by a network device.
  • beam detection is the channel quality used by a terminal device to detect a transmission beam of a network device
  • the transmission beam is a beam used when the network device communicates with the terminal device.
  • the RS is a reference signal set used by a terminal device to initiate link reconfiguration after it determines that a communication link failure occurs in the transmission beam of a network device.
  • the link failure may also be referred to as communication failure, communication failure, link failure, beam failure, beam failure, communication link failure, communication link failure, and the like.
  • link failure recovery may also be referred to as recovering communication between a network device and a terminal device, communication failure recovery, link failure recovery, link failure recovery, beam failure recovery, beam failure recovery, communication link failure recovery, Communication link failure recovery, link reconfiguration, etc.
  • 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 have other names, and this application does not make specific reference to this. limited.
  • the link failure recovery request information may also be referred to as communication failure recovery request information, communication failure recovery request information, link failure recovery request information, beam failure recovery request information, beam failure recovery request information, and communication link. Failure recovery request information, communication link failure recovery request information, link reconfiguration request information, reconfiguration request information, and so on.
  • the link failure response information may also be referred to as link failure recovery response information, communication failure response information, beam failure recovery response information, beam failure response information, communication link failure recovery response information, and communication link failure.
  • Link failure recovery response information communication failure recovery response information, communication link failure response information, beam failure recovery response information, beam failure response information, link reconfiguration response information, link failure recovery response information, link failure response information, link failure Recovery response information, link failure response information, communication failure recovery response information, communication failure response information, reconfiguration response information, etc.
  • the link failure recovery request may refer to sending a signal on a resource used to carry a communication failure recovery request
  • the link failure recovery response information may refer to a message used to send a communication failure recovery response.
  • Controlling downlink control information (cyclic-redundancy check (CRC) received on the cell resource set and / or search space set by cell-radio network temporary identifier (C-RNTI) scrambled downlink control information , DCI)
  • CRC cyclic-redundancy check
  • C-RNTI cell-radio network temporary identifier
  • DCI downlink control information
  • the communication failure recovery response information may also be scrambled by other information, which is not limited in this embodiment of the present application.
  • the names of the communication failure, communication failure recovery, communication failure recovery request information, and communication failure recovery response information in the embodiments of the present application may have other names, which are not specifically limited in this application.
  • the uplink resource set configured by the network device for the first cell to send a link failure of the first cell is referred to as a first uplink resource set.
  • the number of 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 is associated with one downlink reference signal.
  • the sending beam when the terminal device sends information on a PRACH resource is the sending beam corresponding to the receiving beam of the downlink reference signal associated with the PRACH resource, that is, the terminal device can use the receiving beam corresponding to the receiving beam.
  • the transmit beam sends information on the PRACH resource.
  • an optional implementation is that in the first uplink resource set, a PRACH resource is associated with a downlink reference signal and an uplink reference signal, and the terminal device may determine the downlink reference signal according to the determined downlink reference signal. The associated PRACH resource, and then determine the uplink reference signal associated with the PRACH resource, so as to send information on the PRACH resource by using the transmit beam of the uplink reference signal.
  • the PRACH resource may not be associated with the downlink reference signal, but may use the specially configured PUSCH resource to report the information of the downlink reference signal again.
  • the downlink fails and the uplink also fails.
  • the terminal device uses the transmission beam corresponding to the received beam of the identified downlink reference signal to send the PRACH, so only multiple PRACH resources.
  • the downlink fails, and the uplink may or may not fail.
  • the uplink also fails, you need to find the corresponding uplink reference signal to send PRACH.
  • different PRACH resources can be associated with different uplink reference signals, but it is not necessary to associate downlink reference signals at this time.
  • the downlink reference signal may be The PUSCH is reported again using the third uplink resource in the following embodiments. If the uplink does not fail, the PRACH can be sent using the active PUCCH beam or other available uplink beams. At this time, the PRACH can be associated with the downlink reference signal and does not need to report the PUSCH resource again.
  • the terminal device does not know whether the uplink has failed, so in a scenario where there is no reciprocity between the uplink and the downlink, the PRACH resource is associated with the uplink reference signal, and then the downlink reference signal is reported through the dedicated PUSCH resource. information.
  • the information of the spatial related parameters may include quasi-collocation (QCL) hypothesis information, spatial related information (Spatial Relation), and the like.
  • the information about the spatial related parameters is information about the spatial related parameters used to send or receive channels and / or signals of the first cell.
  • the channel may include a control channel, a data channel, a channel carrying a reference signal, and so on.
  • the channel may be PUCCH, PDCCH, PUSCH, PRACH, Physical Downlink Shared Channel (PDSCH), and so on.
  • the signal may be a channel state information reference signal (CSI-RS), a sounding reference signal (SRS), a synchronization signal broadcast channel block (synchronous signal / PBCH block, SSB), or the like, or
  • the signal may be a channel state information reference signal, a tracking reference signal (TRS), a synchronous signal broadcast channel block (synchronous signal / PBCH block, SSB), and the like.
  • CSI-RS channel state information reference signal
  • SRS sounding reference signal
  • SSB synchronization signal broadcast channel block
  • TRS tracking reference signal
  • synchronous signal broadcast channel block synchronous signal / PBCH block, SSB
  • quasi-collocation (QCL) information can also be called co-location hypothesis information or quasi-co-location hypothesis information.
  • the QCL hypothetical information is used to assist in describing information such as the receiving side beamforming information and the receiving process of the terminal device. It should be understood that the spatial characteristic parameters of the two reference signals or channels that satisfy the QCL relationship are the same, so that the spatial characteristic parameters of the target reference signal can be inferred based on the source reference signal resource identifier.
  • the space-related information is used to assist in describing information such as the beamforming information on the transmitting side of the terminal device and the transmission process. It should be understood that the spatial characteristic parameters of the two reference signals or channels that satisfy the spatial correlation information are the same, so that the spatial characteristic parameters of the target reference signal can be inferred based on the source reference signal resource identifier.
  • the terminal device may transmit the target reference signal according to the transmission beam identified by the reference signal resource associated with the spatial related information.
  • the reception beam is equivalent to a space transmission filter, a space transmission filter, a space reception filter, and a space reception filter; a transmission beam may be equivalent to a space transmission filter, a space transmission filter, a space transmission filter, and a space transmission filter.
  • the information of the spatial related parameters is equivalent to a spatial filter (transmission / receive filter).
  • the spatial filter generally includes a spatial transmitting filter and / or a spatial receiving 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 the like.
  • the receiving beam on the terminal device side and the transmitting beam on the network device side may be downlink spatial filters, and the transmitting beam on the terminal device side and the receiving beam on the network device side may be uplink spatial filters.
  • the spatial characteristic parameter includes one or more of the following parameters: angle of incidence (AoA), main (Dominant) angle of incidence AoA, average angle of incidence, power angle spectrum (PAS) of angle of incidence (PAS) ), Angle of exit (AoD), main angle of exit, average angle of exit, power angle spectrum of angle of exit, terminal device transmit beamforming, terminal device receive beamforming, spatial channel correlation, base station transmit beamforming, base station Receive beamforming, average channel gain, average channel delay, delay spread, Doppler spread, Doppler shift, spatial Rx parameters), spatial transmission parameters (spatial, Tx, parameters), etc.
  • 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 determine information such as beamforming or reception processing on the receiving side based on the QCL hypothesis information.
  • the space-related information determines information such as beam forming or transmission processing on the transmitting side.
  • a transmission configuration indicator refers to that a TCI state (TCI state) may include one or two referenced reference signals and an associated QCL type (QCL type).
  • QCL types can be divided into four categories: A / B / C / D, which are different combinations or choices of ⁇ Doppler shift, Doppler spread, average delay, delay spread, spatial Rx parameter).
  • the TCI status includes QCL information, or the TCI status is used to indicate QCL information.
  • a control resource set is one or more resource sets configured by a network device for a terminal device, and is used to send a PDCCH.
  • the network device may send a control channel to the terminal device on the control resource set.
  • the network device may also configure other configurations for the terminal device to control the association of the resource set, such as a search space set.
  • There is a difference in the configuration information of each control resource set such as a frequency domain width difference and a time domain length difference.
  • the control resource set may be a CORESET or a control region (control region) or an enhanced physical downlink control channel (E-PDCCH) set defined by a 5G mobile communication system.
  • E-PDCCH enhanced physical downlink control channel
  • the PDCCH configured in the common search space set is mainly used for scheduling remaining system information (RMSI), other system information (other system information, OSI), and paging.
  • RMSI remaining system information
  • OSI other system information
  • paging Paging message, one or more types of information in a random access message (including: the second message (Message2) or the fourth message (Message4)).
  • association means that the different information configured by the network device for the terminal device is an inclusive relationship between each other, or one of the information contains another index, identifier, or there is a corresponding relationship between the two information ,and many more.
  • the first uplink resource set includes PRACH resources configured by the network device for the first cell to send link failure recovery request information of the first cell, and further includes a downlink corresponding to each PRACH resource. Reference signal.
  • the M PRACH resources included in the second uplink resource set have no corresponding downlink reference signals.
  • FIG. 4 the first uplink resource set includes PRACH resources configured by the network device for the first cell to send link failure recovery request information of the first cell, and further includes a downlink corresponding to each PRACH resource. Reference signal.
  • the M PRACH resources included in the second uplink resource set have no corresponding downlink reference signals.
  • the reference signal associated with the QCL hypothetical information or the spatially related information may include the reference signal information such as the index or identification of the reference signal for the QCL hypothetical information or the spatially related information, or may be configured for a certain configuration.
  • the information includes the correspondence between QCL hypothetical information or spatial related information and reference signal information, which is not limited in the embodiments of the present application.
  • the configuration information may be a control resource set.
  • the first uplink resource set may include multiple PRACH resources for sending link failure recovery request information of the first cell, a downlink reference signal corresponding to each PRACH resource, and an uplink corresponding to each PRACH resource. Parameter signals.
  • the second uplink resource set may include M PRACH resources for sending link failure recovery request information of N second cells, and each PRACH resource may have a corresponding downlink reference signal, but may be in an invalid state.
  • the associated reference signal is not configured or the beam information of the PRACH resource is not configured, so that the transmission beam of the first indication information dynamically or Semi-static configuration.
  • the first indication information is used to indicate that the link of the ith cell in the N second cells has failed.
  • the first indication information is based on different first uplink resources, and the information that can be indicated is also different. For example, if the first uplink resource is a PRACH resource in the first uplink resource set, the first indication information indicates that the terminal device has a cell and a link failure occurs.
  • the first uplink resource is a PRACH resource corresponding to the activated QCL information or spatial related information of the first cell in the first uplink resource set, and it is agreed that the first cell inactive QCL information or spatial related information corresponding to the PRACH in the first uplink resource set
  • the first indication information may indicate that a link failure has occurred in a cell in N second cells
  • the first uplink resource is the i-th one in the second uplink resource set
  • the PRACH resource corresponding to the cell the first indication information may indicate that the i-th cell has a link failure
  • the first uplink resource is configured by the network device for sending link failure recovery request information of the N second cells
  • the first indication information is the link failure recovery request information, and so on, which will be described below.
  • the link failure recovery request information includes at least one of identification information and reference signal information of a cell where the link failure has occurred.
  • the link failure response information is used to inform the terminal device that the network device has received the first instruction information and / or the second instruction information.
  • the network device 110 includes a first cell and N second cells, the i-th cell is one of the N second cells, and N is an integer greater than or equal to 1.
  • the first cell may be a cell where a resource for sending scheduling request information for the i-th cell is located.
  • the link failure recovery network device provided in this application is applied to the communication system shown in FIG. 2.
  • the i-th cell is a cell in the network device 220 and the first cell is a cell in the network device 210, it is the same as FIG. 1.
  • the communication system shown is different in that, when the network device 210 receives the identification information of the i-th cell and candidate reference signal information (such as the third reference signal information and / or the fourth reference signal information), it can identify the identification.
  • the information and candidate reference signal information are sent to the network device 220, and the network device 220 uses the candidate reference signal information to send link failure response information on the downlink resource of the i-th cell.
  • candidate reference signal information such as the third reference signal information and / or the fourth reference signal information
  • the network device 110 when the network device 110 receives the identification information of the i-th cell and candidate reference signal information (such as the third reference signal information and / or the fourth reference signal information), the network device 110 can use the information.
  • the candidate reference signal information sends link failure response information on the downlink resources of the i-th cell. Therefore, in the content explained below in connection with the communication system shown in FIG. 1, in addition to the two communication systems, the execution subject of sending the link failure response information may be different. Other contents, such as optional implementation methods, are also applicable to The communication system shown in FIG. 2.
  • FIG. 3 is a schematic flowchart of a link failure recovery method according to an embodiment of the present application.
  • the terminal device determines that a link failure occurs in the i-th cell, it can perform the following steps to restore the link in the i-th cell.
  • the terminal device 120 sends the first indication information on the first uplink resource according to the information about the spatial related parameters.
  • the information about the spatially related parameters is information about spatially related parameters used to send or receive channels and / or signals of the first cell; the first indication information is used to indicate the i-th of the N second cells The link of the cell fails; the first uplink resource is an uplink resource of the first cell.
  • the network device 110 receives the first instruction information on the first uplink resource according to the information of the spatial related parameters, and sends the link failure response information according to the first instruction information.
  • the link failure response information is used to notify the terminal device that the network device has learned the identification information of the cell where the link failed and the information of the candidate reference signal.
  • the network device does not need to configure multiple uplink resources associated with multiple reference signal resources of the second cell to indicate a link failure of the second cell, and the terminal device may use the spatial related parameters of the first cell And the uplink resources of the first cell can notify the network device that a link failure has occurred, so that the network device can return link failure response information, thereby reducing resource overhead.
  • the first indication information also needs to indicate at least one of identification information, third reference signal information, and fourth reference signal information of the i-th cell. Therefore, the network device can send the link failure response information according to the first instruction information.
  • the third reference signal information is information of a reference signal whose channel quality in the candidate reference signal resource set is greater than or equal to the first threshold
  • the fourth reference signal information is that the channel quality in the candidate reference signal resource set is less than or Information of a reference signal equal to the second threshold.
  • the reference signal resource set is a reference signal resource set corresponding to the i-th cell.
  • the third reference signal corresponding to the third reference signal information and the fourth reference signal corresponding to the fourth reference signal information are reference signals on the i-th cell.
  • the third reference signal is a downlink reference signal newly identified on a downlink (a link between the terminal device and the network device), and the third reference signal information includes a resource of the third reference signal An index and / or quality information of the third reference signal.
  • the third reference signal can be used for the network device to restore the downlink (the link between the network device and the terminal device).
  • the downlink may also be understood as a link between the terminal device and the second network device in the i-th cell.
  • the fourth reference signal is a reference signal that detects a failure of a downlink (the link between the terminal device and the network device), or the fourth reference signal is a space corresponding to the first downlink resource association
  • the related parameter or the reference signal contained in the spatial related parameter, and the fourth reference signal information includes a resource index of the fourth reference signal and / or quality information of the fourth reference signal.
  • the fourth reference signal may be one or more reference signals in a beam failure detection reference signal set.
  • the third reference signal and the fourth reference signal are reference signals of the second cell.
  • the third reference signal and the fourth reference signal may be downlink reference signals.
  • the third reference signal and the fourth reference signal are CSI RS, SSB, DMRS, or TRS.
  • the terminal device maintains a beam failure recovery timer or counter in order to stop the link failure recovery process in a timely manner.
  • the beam failure recovery timer is used to control the link failure recovery time
  • the beam failure recovery counter is used to control the number of requests for link failure recovery. That is, after the terminal device sends the first instruction information on the first uplink resource according to the information of the spatial related parameters, the network device may not receive the first instruction information, or may not be able to send a link failure recovery response message, At this time, the terminal device continues to wait within the time set by the timer, and / or sends the first instruction information multiple times within the number of times set by the counter, that is, step 101 is performed multiple times. Therefore, a link failure recovery method provided in the embodiments of the present application may not include steps 102-103.
  • FIG. 4 is a schematic flowchart of another link failure recovery method according to an embodiment of the present application.
  • the link failure recovery method shown in FIG. 4 In the terminal device, the dedicated physical uplink shared channel PUSCH resource configured by the network device may be used to send at least one of the identification information of the i-th cell, the third reference signal information, and the fourth reference signal information.
  • the link failure recovery method shown in FIG. 4 can reduce the load of the first indication information.
  • the link failure is an emergency event and requires periodic pre-planning. Reserve resources to send the first indication information at any time to inform the network device that a link failure has occurred. This embodiment does not need to reserve PUCCH resources periodically, which can save uplink resources.
  • the link failure recovery method may include the following steps:
  • the terminal device 120 sends the first indication information on the first uplink resource according to the information about the spatial related parameters.
  • the information about the spatially related parameters is information about spatially related parameters used to send or receive channels and / or signals of the first cell; the first indication information is used to indicate the i-th of the N second cells The link of the cell fails; the first uplink resource is an uplink resource of the first cell.
  • the network device 110 receives the first instruction information and sends first signaling, where the first signaling is used to indicate a third uplink resource.
  • the third uplink resource is an uplink resource of the first cell; optionally, the third uplink resource may also be another cell where no downlink failure occurs or a cell where no uplink failure occurs.
  • the first signaling is MAC-CE signaling or Downlink Control Information (DCI) signaling of a media access control layer control element.
  • DCI Downlink Control Information
  • the Media Access Control (MAC-CE) signaling or the DCI signaling is dedicated to indicating the third uplink resource. Signaling.
  • MAC-CE Media Access Control
  • the cyclic redundancy check (Cyclic Redundancy Check, CRC) of the DCI signaling may be scrambled by a dedicated wireless network temporary identifier, or the DCI signaling carries a dedicated instruction for notifying the terminal device of the PUSCH scheduled by the DCI.
  • Resources are resources used to send link failure recovery request information.
  • the dedicated wireless network temporary identifier is the system network information wireless network temporary identifier (system-information network temporary identifier (SI-RNTI)), the random access wireless network temporary identifier (random network wireless identifier (RA-RNTI), Cell Temporary Wireless Network Temporary Identifier (TC-RANTI), Cell Radio Network Temporary Identifier (C-RNTI), Paging Temporary Radio Network Temporary Identifier, P-RNTI), Interruption Radio Network Temporary Identifier (INT-RNTI), Slot Format Indication Radio Network Temporary Identifier Radio Network Identifier (SFI-RNTI), Uplink Shared Power Control Wireless Network Temporary identification (transmission, power, control, physical, shared, channel, Radio, Network, Temporary, Identifier, TPC-PUSCH-RNTI), uplink control power control wireless network temporary identification (transmit, power, control) physical link control channel Radio Network Temporary Identifier (TPC-PUCCH-RNTI) detection reference signal power control wireless network temporary identification (transmission (S
  • the terminal device knows that the network device receives the beam failure request according to the DCI signaling, and the PUSCH resource allocated by the network device through the first signaling is used for reporting related information of the beam failure recovery.
  • the special indication may be caused by other status bits in the DCI to make the total segment device distinguish whether the received PUSCH resource is used for reporting related information of beam failure recovery or for normal data reporting.
  • the terminal device 120 receives the first signaling, and sends the second indication information on the third uplink resource.
  • the second indication information is used to indicate at least one of identification information, third reference signal information, and fourth reference signal information of the i-th cell;
  • the network device 110 receives second instruction information on the third uplink resource, and sends link failure response information according to the second instruction information.
  • the third reference signal information is information of a reference signal with a channel quality greater than or equal to a first threshold in the candidate reference signal resource set of the i-th cell
  • the fourth reference signal information is the i-th Information of reference signals with channel quality less than or equal to the second threshold in the candidate reference signal resource set of the cell.
  • the terminal device first sends the first indication information to inform the network device that a link failure has occurred, and then the network device configures the third uplink resource for the terminal device through the first signaling, so that the terminal device can use the first
  • the three uplink resources report at least one of the identification information, the third reference signal information, and the fourth reference signal information of the i-th cell to the network device, so that the network device recovers the link of the i-th cell.
  • this embodiment also does not require the network device to configure an uplink resource for each downlink reference signal in the candidate reference signal resource set of the i-th cell to implement link recovery, but to configure a third uplink resource. Can greatly reduce resource overhead.
  • this embodiment does not need to periodically allocate large-capacity resources to wait for the terminal to report information about link failure at any time. Instead, the terminal device can first report the information about the link failure in the cell and then instruct the non- Periodic signaling allocates large-capacity resources and reports related information about link failure.
  • the application may include other embodiments in addition to the embodiments shown in FIG. 3 and FIG. 4.
  • a terminal device when a terminal device performs a link failure recovery method, it may send the first instruction information, which may be compared due to the overall network conditions. The terminal device cannot receive the response information of the network device. Even in this case, the link failure recovery method is compared with the prior art method in which uplink resources need to be configured for each downlink reference signal of the cell. Can greatly reduce the uplink resource overhead.
  • the embodiments of the present application are not limited.
  • the information about the spatial related parameters used for sending the first indication information may include multiple implementation manners, and the first uplink resource used for sending the first indication information may also include multiple implementation manners.
  • the first signaling Various implementation manners are also included, and the size of the load of the first indication information and / or the second indication information also includes various implementation manners, and the like, which will be described below.
  • the embodiment of the present application also relates to a part of content, that is, information about spatial related parameters used for sending the first indication information, and may include various implementation manners, which are described below.
  • the information about the spatial related parameters is quasi co-location QCL hypothesis information for receiving a physical downlink control channel (Physical Downlink Control Channel, PDCCH) of the first cell.
  • PDCCH Physical Downlink Control Channel
  • the transmitting beam for transmitting the first indication information may be a transmitting beam corresponding to a receiving beam for receiving the PDCCH of the first cell.
  • this method is suitable for scenarios with reciprocity.
  • the filter forming the receive beam is the same as the filter forming the transmit beam.
  • the first indication information is sent on the first uplink resource according to the QCL hypothesis information for receiving the PDCCH of the first cell, so as to avoid the QCL hypothesis associated with one downlink reference signal in the candidate reference signal set as in the prior art. Information, resulting in the need to configure an associated uplink resource for each downlink reference signal to send a link failure, thereby saving resource overhead.
  • the terminal device can detect the PDCCH in a search space set associated with resources such as CORESET ID1, CORESET ID2, CORESET ID3, etc., and the same or different PDCCH can be detected on different time-frequency resources.
  • the first indication information is sent using the QCL hypothetical information of the control resource set with the smallest index value or identification of the control resource set.
  • the QCL information is configured with CORESET as a unit, rather than configured or activated with PDCCH, search space. Therefore, on which CORESET the PDCCH is detected, the PDCCH is received using the QCL information corresponding to the CORESET. Accordingly, the QCL information is also used to send the first indication information.
  • the PDCCH may be a PDCCH detected on a time-frequency resource jointly determined by a common search space set and its associated CORESET. That is, the QCL hypothesis information used to send the first indication information may be the QCL hypothesis information of the public search space set CSS of the first cell, and the coverage of the transmission beam associated with the CSS QCL hypothesis information is good, and the transmission beam is used to send The first indication information can increase a probability that the network device receives the first indication information.
  • the QCL hypothesis information used to send the first indication information may be QCL hypothesis information of a control resource set in which the common search space CSS of the first cell is located.
  • the information of the spatially related parameters for sending the first indication information is spatially related information for sending a Physical Uplink Control Channel (PUCCH) of the first cell.
  • PUCCH Physical Uplink Control Channel
  • the spatially related information of the PUCCH may be the spatially related information of one or more PUCCHs in the first cell with an index value or the smallest identified PUCCH.
  • the PUCCH spatially related information may be the PUCCH spatially related information used to send scheduling request information for the i-th cell; that is, the terminal device determines that the i-th cell has a link failure.
  • the first indication information may be sent by using the space-related information of the PUCCH for sending the scheduling request information of the i-th cell.
  • the information about the spatially related parameters for sending the first indication information is information about the spatially related parameters of the synchronous signal broadcast / physical channel block (SSB) resources of the first cell. That is, the first indication information is sent by using a transmit beam corresponding to a receive beam used to receive the SSB in the SSB resource.
  • the SSB resource is an SSB resource when a terminal device initially accesses the first cell. In general, this method is suitable for scenarios with reciprocity.
  • the filter forming the receive beam is the same as the filter forming the transmit beam.
  • the information about the space-related parameters for sending the first indication information is the space-related information of the channel used to carry the link failure recovery request information of the first cell.
  • the information of the spatially related parameter that sends the first indication information is the spatially related information of the channel used to carry the link failure recovery request information of the first cell
  • the following may be included:
  • Case 1 The terminal device determines that a link failure occurs in the first cell, and then determines that a link failure occurs in the i-th cell of the N second cells;
  • Time point 1 Before receiving the link failure recovery response information of the first cell, the terminal device determines that a link failure has occurred in the i-th cell;
  • Time point 2 After receiving the link failure recovery response information of the first cell, the terminal device determines that a link failure has occurred in the i-th cell;
  • Time point 3 After receiving the reconfiguration signaling of the first cell, the terminal device determines that a link failure has occurred in the i-th cell.
  • the terminal device determines that a link failure occurs in the first cell, it determines a reference signal greater than a preset threshold according to the channel quality of the reference signal in the candidate reference signal resource set corresponding to the first cell, and uses the spatial correlation associated with the reference signal. Information, sending the link failure recovery request information of the first cell on the PRACH resource associated with the reference signal.
  • the terminal device may use the space related information of the channel carrying the link failure recovery request information of the first cell to send the first indication information.
  • This first embodiment can be adapted to the time point 1 and time point 2 scenarios, that is, after the terminal device determines to send the link failure recovery request information for the first cell, the first indication information can be sent.
  • the terminal device may send the first indication information after receiving the link failure recovery response information of the first cell.
  • the terminal device may use the space related information of the channel carrying the link failure recovery response information of the first cell to send the first indication information.
  • the terminal device determines that a link failure occurs in the first cell, within the time and / or number of timers and / or counters used for link failure recovery, the space-related information associated with multiple downlink reference signals may be used to send the first
  • the link failure recovery request information of a cell may be better, and the receiving beam or space related parameter information that can receive the link failure recovery response information of the first cell may be better. Therefore, the link failure recovery response information carrying the first cell is used. Sending the first indication information by using the space-related information can increase the probability that the network device receives the first indication information.
  • the second embodiment can be adapted to time point 1 and time 2, that is, the terminal device sends the first indication information after receiving the link failure recovery response information of the first cell.
  • the terminal device may use the reconfiguration information to determine that the link restoration of the first cell is successful, and then send the first indication information.
  • the terminal device may use the reconfiguration information to send the first indication information, that is, the link is reestablished in the first cell, and the first indication information may be sent using the QCL hypothesis information or space-related information activated by the first cell.
  • the spatial related parameters such as the QCL information used to receive the PDCCH of the first cell, or the spatial related information used to send the PUCCH of the first cell, and so on.
  • the terminal device uses the reconfiguration information to send the first instruction information.
  • the probability that the network device receives the first instruction information can be greatly increased. Therefore, the third embodiment is adapted to the time point 1-3, it is necessary to wait until the first cell is completely restored, and then restore the link of the i-th cell, that is, the first indication information is sent again.
  • the point in time when the terminal device restores the link of the first cell and the link of the second cell may be irrelevant. For example, when the terminal device determines that the first cell fails to send the link, it performs link failure recovery for the first cell. For related operations, when the terminal device determines that a link failure has occurred in the i-th cell, it also performs related operations on link failure recovery for the second cell.
  • the information about the spatial related parameters used by the terminal device to send the first indication information to the i-th cell may be the above-mentioned spatial related information of the channel used to carry the link failure recovery request information of the first cell.
  • the network device can be notified in a timely manner that a link failure has occurred in the cell, so that the network device can return related response information as soon as possible.
  • Case 2 The terminal device determines that a link failure occurs in the first cell and the i-th cell at the same time.
  • any one of the foregoing Embodiments 1 to 4 may be adopted.
  • Scenario 3 The terminal device first determines that a link failure has occurred in the i-th cell, and then determines that a link failure has occurred in the first cell
  • the terminal device uses the QCL hypothesis information or space-related information activated by the first cell to send the first indication information, but has not yet received the network device's return for the i-th cell.
  • the terminal device may execute the method described in any one of the first to fourth embodiments to send the first indication information. It may also be combined with various implementations of the above-mentioned spatial related parameter information, such as for receiving QCL information of the PDCCH of the first cell, or for transmitting spatial related information of the PUCCH of the first cell, etc., and sending multiple times.
  • the first indication information until the response information of the network device is received.
  • the embodiment of the present application also relates to a part of content, that is, the first uplink resource used for sending the first indication information may include various implementation manners, which are described in detail below.
  • the first indication information includes at least one of identification information of the i-th cell, third reference signal information, and fourth reference signal information. Therefore, the first uplink resource may be a physical uplink control channel PUCCH resource configured on the uplink resource of the first cell and dedicated to sending link failure recovery request information of the N second cells.
  • the PUCCH resource may be used to report information about the link failure.
  • the link of one cell may be selected to be restored first, and then the link of another cell may be restored.
  • the PUCCH resources configured by the network device for the N second cells may be multiple, but the total resources occupied by the multiple PUCCH resources are less than the uplinks associated with configuring each downlink reference signal for each cell in the prior art.
  • the total resources of the resource For example, a corresponding number of PUCCHs may be configured for the second cell according to the number of the second cells. For another example, the number of configured PUCCHs is set periodically according to the reliability of the network.
  • the second indication information may be used to indicate the identification information, the third reference signal information, and the fourth reference signal information of the i-th cell. Since at least one of them is used, the load of the first instruction information is small.
  • the first uplink resource may be a physical random access channel PRACH resource in the first uplink resource set, and the first uplink resource set is configured for the first cell to send the first cell.
  • PRACH resource in the first uplink resource set
  • the first uplink resource set is configured for the first cell to send the first cell.
  • the link failure of the first cell also occurs.
  • the first uplink resource may be the first uplink resource set used to send the link failure recovery request information of the first cell. PRACH resources.
  • the first uplink resource may be the first reference signal in the first uplink resource set.
  • the first reference signal is a reference signal associated with QCL information or spatial related information activated by the first cell.
  • the probability of successfully transmitting the first indication information can be increased.
  • the first reference signal may be a downlink reference signal, such as CSI-RS, SSB, TRS, etc .; optionally, the reference signal may be an uplink reference signal, such as SRS.
  • the second reference signal may be a downlink reference signal, such as CSI-RS, SSB, TRS, etc .; optionally, the reference signal may be an uplink reference signal, such as SRS.
  • the first uplink resource is defined as the uplink resource associated with the reference signal associated with the QCL information activated by the first cell or the space-related information, and then the PRACH associated with the second reference signal in the first uplink resource set
  • the resources are used to send link failure recovery request information of the first cell
  • the second reference signal is a reference signal associated with inactive QCL information or spatial related information of the first cell. That is, the first uplink resource used for sending the link failures of the N second cells may be pre-agreed or signaled, and the first uplink resource used for sending the link failure of the second cell is associated with the activated QCL information or spatial related information in the first uplink resource set.
  • the reference signal is associated with the PRACH resource; meanwhile, the pre-protocol agreement or signaling configuration is used to send the uplink resource used for the link failure of the first cell to the inactive QCL information or space-related information in the first uplink resource set.
  • PRACH resource associated with the reference signal PRACH resource associated with the reference signal.
  • the activated QCL information refers to the activated QCL information used to receive the PDCCH of the first cell
  • the activated spatial related information refers to the activated spatial related information used to send the PUCCH of the first cell.
  • the inactive QCL information refers to inactive QCL information for receiving the PDCCH of the first cell
  • the inactive spatial related information refers to inactive spatial related information for transmitting the PUCCH of the first cell. That is, the activated QCL information is the QCL information that is actually used from a plurality of candidate QCL information, and the inactive QCL information is the QCL information that is not actually used in a preset time period.
  • the activated space-related information is determined from a plurality of candidate QCL information, and the inactive space-related information is space-related information that has not been actually used in a preset time period.
  • the first uplink resource set includes 16 PRACH resources, each of which is associated with 16 downlink reference signals (CSI-RS1 to CSI-RS16).
  • the network device is configured to include a reference signal included in the QCL information of the PDCCH of the first cell as CSI-RS1.
  • the terminal device determines that a beam failure occurs in the first cell, the terminal device will search the CSI-RS2 to CSI-RS16 for a downlink reference signal greater than a preset threshold, and send the downlink reference signal to the first cell on the PRACH resource corresponding to the downlink reference signal.
  • the request information of the beam failure recovery request is obtained.
  • the network device knows that a beam failure has occurred in the first cell, and knows that the new downlink beam recommended by the terminal device is a downlink reference signal associated with the PRACH resource.
  • the terminal device sends the first indication to the i-th cell on the PRACH resource corresponding to the service beam of the first cell (that is, on the PRACH resource associated with the CSI-RS1 resource). information.
  • the network device may determine that the cells in the N second cells have sent link failures according to the first instruction information, so that the first signaling can trigger the N second cells.
  • the candidate reference signal resource set without having to periodically trigger or send each reference signal in the candidate reference signal resource set of the N second cells, thereby saving resource overhead.
  • the network device may configure M PRACH resources for N second cells in the uplink resources of the first cell for sending link failure recovery request information of the second cell, said For the second uplink resource set, N is greater than or equal to the M.
  • the difference between the PRACH resources included in the second uplink resource set and the PRACH resources included in the first uplink resource set is that the PRACH resources included in the second uplink resource set are not associated with the downlink reference signal or are associated with the downlink reference signal but It is invalid, that is, it is different from the uplink resources configured for each downlink reference signal of each cell in the prior art. Therefore, compared with the prior art, this embodiment can still reduce resource overhead.
  • the terminal device sends the first indication information by using the PRACH resource in the second uplink resource set, so that when the network device receives the first indication information on the PRACH resource, it can know that it is a cell in the N second cells. A link failure occurred.
  • the first signaling can also trigger each reference signal in the candidate reference signal resource set of the N second cells to prevent the network device from triggering the candidate reference signal resource set periodically. This can save resource overhead.
  • one PRACH resource of the second uplink resource set corresponds to one second cell of the N second cells one by one; then the terminal device sends the first instruction information.
  • the first uplink resource used is a PRACH resource corresponding to the i-th cell in the second uplink resource set.
  • the network device can use the PRACH resource used by the received first instruction information. Since the corresponding second cell is known, the first indication information is also used to indicate the identification information of the i-th cell. It can be seen that, in this case, the second indication information in the embodiment shown in FIG. 3 does not necessarily indicate the identification information of the i-th cell. In addition, in this case, the network device may trigger the candidate reference signal resource set of the i-th cell without triggering the candidate reference signal resource set of all the second cells.
  • one PRACH resource in the second uplink resource set corresponds to one second cell group in P second cell groups
  • the N second cells include all
  • the P second cell groups include one or more second cells, where P is an integer greater than or equal to 1 and less than N.
  • the first uplink resource is a PRACH resource corresponding to a second cell group to which the i-th cell belongs in the second uplink resource set.
  • the terminal device may use the PRACH resources corresponding to the second cell group to which the i-th cell belongs when sending the first indication information. Accordingly, the network device may receive the first When indicating information, the corresponding second cell group is obtained according to the PRACH resource, so that the first signaling can trigger the candidate reference signal resource set corresponding to the second cell group without triggering all candidate reference signal resources of the second cell. Set, or it is not necessary to periodically trigger all candidate reference signal resource sets of the second cell, thereby saving resource overhead.
  • the first indication information can also indicate identification information of the second cell group in which the i-th cell in which the link failure occurs. Accordingly, the first signaling may trigger the candidate reference signal resource set of the second cell group.
  • the network device configures a PRACH resource for N second cells, that is, the second uplink resource set includes a PRACH resource.
  • the terminal device uses the PRACH resource to send the first indication information
  • the network After receiving the first indication information, the device can know that a link failure has occurred in a cell among the N second cells.
  • This embodiment of the present application also relates to a part of content, that is, the load size of the first indication information and / or the second indication information may include multiple implementation manners, which are described in detail below.
  • the first indication information or the second indication information is used to indicate identification information of the i-th cell, and is also used to indicate the third reference signal information and / or In the fourth reference signal information, the identification information of the i-th cell is independently encoded with the third reference signal information and / or the fourth reference signal information.
  • the independent coding means that the identification information is separately indicated from the third reference signal information and / or the fourth reference signal information by using different bits.
  • the network device needs to identify the identification information in order to obtain the third reference. Only the number of bits of the signal information and / or the fourth reference signal information can be used to identify the third reference signal information and / or the fourth reference signal information.
  • the size of the load of the first indication information and / or the size of the load of the second indication information is related to the first uplink resource, which will be described below from different implementation manners.
  • the first uplink resource for sending the first indication information is a PUCCH resource configured by the network device for the N second cells and dedicated to sending link failure recovery request information, then:
  • the first indication information needs to indicate identification information of the i-th cell, and third reference signal information and / or fourth reference signal information. Since both the terminal device and the network device know the number of the second cell, the number of bits of the identification information of the i-th cell is a fixed value, such as The number of bits of the third reference signal information and / or the fourth reference signal information is related to the number of downlink reference signals in the candidate reference signal resource set of each cell identified by the identification information.
  • the number of bits of the third reference signal information is based on the candidate reference signal resource set with the largest number of downlink reference signals among the plurality of candidate reference signal resource sets corresponding to the N second cells. It is determined that the number of bits of the fourth reference signal information is determined based on a set of failure detection reference signal resources with the largest number of downlink reference signals in a plurality of beam failure detection reference signal resource sets corresponding to the N second cells. Assuming that the candidate reference signal resource set with the largest number of downlink reference signals includes Y, optionally, the load of the first indication information may be based on to make sure.
  • the number of bits of the third reference signal information changes as the number of downlink reference signals in the candidate reference signal resource set of the cell indicated by the identification information changes.
  • the number of bits of the fourth reference signal information changes based on a change in the number of downlink reference signals in the beam failure detection reference signal resource set of the cell indicated by the identification information.
  • the first indication information cannot inform the network device of the identification information of the cell where the link failure occurred.
  • the number of bits of the identification information in the second indication information is related to the total number of cells connected to the terminal device; if the load of the second indication information is a fixed value, the number of bits of the third reference signal information in the second indication information is According to the candidate reference signal resource set with the largest number of downlink reference signals in the candidate reference signal resource set of all cells of the terminal device, the number of bits of the fourth reference signal information is detected according to the beam failure detection of the reference signal resource set in all cells of the terminal device. The beam failure detection with the largest number of reference signals is related to the reference signal resource set. If the load of the second indication information is a non-fixed value, the number of bits of the third reference signal information in the second indication information is indicated according to the identification information.
  • the number of downlink reference signals in the candidate reference signal resource set of the cell changes, and the number of bits of the fourth reference signal information is a change in the number of downlink reference signals in the reference signal resource set according to the beam failure detection of the cell indicated by the identification information And change.
  • the first uplink resource is an activated QCL or a PRACH resource associated with a downlink reference signal associated with space-related information in the first uplink resource set, and is used to send the first cell
  • the uplink resource of the link failure recovery request information is the PRACH resource associated with the inactive QCL information or the reference signal associated with the space-related information in the first uplink resource set; or the first uplink resource is in the second uplink resource set
  • the first indication information can indicate that a link failure has occurred in a cell in N second cells, at this time, the number of bits of identification information in the second indication information is related to N, such as
  • the number of bits of the third reference signal information in the second indication information is based on the downlink reference in the candidate reference signal resource set of each of the N second cells.
  • the candidate reference signal resource set with the largest number of signals is related, and the number of bits of the fourth reference signal information is based on the beam failure detection of each of the N second cells.
  • the beam failure detection with the largest number of downlink reference signals in the reference signal resource set The reference signal resource set is related; if the load of the second indication information is a non-fixed value, the number of bits of the third reference signal information in the second indication information is the candidate reference signal resource set of the second cell indicated by the identification information The number of mid-downlink reference signals changes, and the number of bits of the fourth reference signal information changes according to the number of downlink reference signals in the beam failure detection reference signal resource set of the second cell indicated by the identification information.
  • the first uplink resource is a PRACH resource corresponding to the i-th cell in the second uplink resource set, that is, the first indication information is also used.
  • the second indication information does not need to include the identification information of the i-th cell, and only needs to include the third reference signal information and / or the fourth reference signal information.
  • the first indication information is also used to indicate identification information of the i-th cell. That is, in this embodiment, due to the association relationship between the PRACH resource and each second cell in the second uplink resource set, This enables the network device to determine the cell identification information according to the PRACH resource receiving the first indication information, instead of the first indication information including the cell identification information.
  • the load size of the second indication information is a fixed value
  • the number of bits of the third reference signal information and the candidate reference signal with the largest number of downlink reference signals in the candidate reference signal resource set of each of the N second cells The resource set is related, and the number of bits of the fourth reference signal information is related to the beam failure detection reference signal resource set with the largest number of downlink reference signals in the N second cell beam failure detection reference signal resource set; if the first The load of the second indication information is a non-fixed value, so the number of bits of the third reference signal information is related to the number of downlink reference signals in the candidate reference signal resource set of the i-th cell, and the number of bits of the fourth reference signal information is The number of downlink reference signals in the beam failure detection reference signal resource set of the i cells is related.
  • the first indication information is further used to indicate The identification information of the second cell group to which the i-th cell belongs, and the identification information in the second indication information may be identification information of the i-th cell within the group of the second cell group.
  • the size of the load of the second indication information is a fixed value, the number of bits of the identification information is determined according to the second cell group including the second cell group with the largest number of second cells among the P second cell groups.
  • the number of bits is related to the candidate reference signal resource set with the largest number of downlink reference signals in the plurality of candidate reference signal resource sets corresponding to the second cell group to which the i-th cell belongs, and the number of bits of the fourth reference signal information is related to the i-th
  • the beam failure detection reference signal resource set with the largest number of downlink reference signals in the multiple beam failure detection reference signal resource sets corresponding to the second cell group to which the cell belongs is related.
  • the number of bits of the identification information is determined according to the number of second cells included in the second cell group to which the i-th cell belongs.
  • the number of bits is related to the number of downlink reference signals in the candidate reference signal resource set of the i-th cell, that is, the number of downlink reference signals in the candidate reference signal resource set of the cell indicated by the identification information; the bit of the fourth reference signal information The number is related to the number of downlink reference signals in the beam failure detection reference signal resource set of the i-th cell, that is, the number of downlink reference signals in the beam failure detection reference signal resource set of the cell indicated by the identification information.
  • FIG. 8 is a schematic structural diagram of a terminal device according to an embodiment of the present application.
  • the terminal device may include a sending unit 310 and a receiving unit 320, where:
  • a sending unit 310 configured to send the first indication information on the first uplink resource according to the information about the spatial related parameters
  • the information about the spatially related parameters is information about spatially related parameters used to send or receive channels and / or signals of the first cell; the first indication information is used to indicate the i-th of the N second cells
  • the link of the cell fails, the N is an integer greater than or equal to 1, the i is an integer greater than or equal to 1 and less than or equal to the N; the first uplink resource is an uplink resource of the first cell .
  • the terminal device :
  • a receiving unit configured to receive first signaling, where the first signaling is used to indicate a third uplink resource
  • the sending unit is further configured to send second indication information on the third uplink resource, where the second indication information is used to indicate identification information of the i-th cell, third reference signal information, and fourth reference At least one of the signal information;
  • the third reference signal information is information of a reference signal whose channel quality is greater than or equal to the first threshold
  • the fourth reference signal information is information of a reference signal whose channel quality is less than or equal to the second threshold.
  • the sending unit and / or receiving unit in the terminal device shown in FIG. 8 may perform the above steps, and may also perform at least one of the various implementation manners in the foregoing method embodiments to implement the link described in the embodiment of the present application.
  • the operations of the terminal equipment in the failure recovery method are not described in detail here.
  • FIG. 9 is a schematic structural diagram of a network device according to an embodiment of the present application.
  • the network device may include a receiving unit 410 and a sending unit 420, where:
  • a receiving unit configured to receive first indication information on a first uplink resource according to the information of the spatial related parameters
  • a sending unit configured to send link failure response information according to the first instruction information
  • the information about the spatially related parameters is information about spatially related parameters used to send or receive channels and / or signals of the first cell; the first indication information is used to indicate the i-th of the N second cells
  • the link of the cell fails, the N is an integer greater than or equal to 1, the i is an integer greater than or equal to 1 and less than or equal to the N; the first uplink resource is an uplink resource of the first cell .
  • the sending unit 410 is further configured to send first signaling, where the first signaling is used to indicate a third uplink resource; and the receiving unit is further configured to send the Receiving second indication information on a third uplink resource, where the second indication information is used to indicate at least one of identification information, third reference signal information, and fourth reference signal information of the i-th cell; wherein, the The third reference signal information is information of a reference signal having a channel quality greater than or equal to a first threshold, and the fourth reference signal information is information of a reference signal having a channel quality less than or equal to a second threshold;
  • the sending unit 420 sends the link failure response information according to the first instruction information, specifically: sends the link failure response information according to the first instruction information and the second instruction information.
  • the link failure described in the embodiment of the present application may be performed in combination with at least one of the various embodiments in the foregoing method embodiments.
  • the operation of the network device in the recovery method is not described in detail here.
  • FIG. 10 is a schematic structural diagram of a device provided by an embodiment of the present application.
  • the device may be a terminal device shown in FIG. 8; it may also be a chip or a circuit, for example, it may be installed in a terminal.
  • This device can correspond to the related operations of the terminal device in the above method.
  • the device may include a processor 510 and a memory 520.
  • the memory 520 is configured to store instructions
  • the processor 510 is configured to execute the instructions stored in the memory 520 to implement steps performed by the terminal device described above, or to implement related operations of each unit in the terminal device shown in FIG. 8 described above.
  • the device may further include a receiver 540 and a transmitter 550. Further, the device may further include a bus system 530, wherein the processor 510, the memory 520, the receiver 540, and the transmitter 550 may be connected through the bus system 530.
  • the processor 510 is configured to execute instructions stored in the memory 520 to control the receiver 540 to receive signals and control the transmitter 550 to send signals to complete the steps of the terminal device in the above method, such as receiving one or more data channels configured by the communication device. Configuration information, or sending scrambled data.
  • the receiver 540 and the transmitter 550 may be the same or different physical entities. When they are the same physical entity, they can be collectively referred to as transceivers.
  • the memory 520 may be integrated in the processor 510, or may be separately provided from the processor 510.
  • the memory 520 is also used for the first uplink resource set and / or the second uplink resource set configured by the network device for the terminal device, and so on.
  • the functions of the receiver 540 and the transmitter 550 may be considered to be implemented through a transceiver circuit or a dedicated chip for transceiver.
  • the processor 510 may be implemented by a dedicated processing chip, a processing circuit, a processor, or a general-purpose chip.
  • a manner of using a general-purpose computer may be considered to implement the terminal device provided in the embodiment of the present application.
  • the program code that will implement the functions of the processor 510, the receiver 540, and the transmitter 550 is stored in the memory, and the general-purpose processor implements the functions of the processor 510, the receiver 540, and the transmitter 550 by executing the code in the memory, such as processing
  • the processor 510 calls the program code in the memory 520 and performs the following operations:
  • the information about the spatially related parameters is information about spatially related parameters used to send or receive channels and / or signals of the first cell; the first indication information is used to indicate the i-th of the N second cells
  • the link of the cell fails, the N is an integer greater than or equal to 1, the i is an integer greater than or equal to 1 and less than or equal to the N; the first uplink resource is an uplink resource of the first cell .
  • the processor 510 calls the program code in the memory 520, and may further perform the following operations:
  • the third reference signal information is information of a reference signal whose channel quality is greater than or equal to the first threshold
  • the fourth reference signal information is information of a reference signal whose channel quality is less than or equal to the second threshold.
  • the processor 510 calls the program code in the memory 520, and may also perform other operations performed by the terminal device in the foregoing method embodiment, that is, the device involved is related to the embodiment of the present application.
  • the terminal device in the foregoing method embodiment
  • the device involved is related to the embodiment of the present application.
  • FIG. 11 is a schematic structural diagram of a terminal device according to an embodiment of the present application.
  • the terminal device is applicable to the system shown in FIG. 1.
  • FIG. 11 shows only the main components of the terminal device.
  • the terminal device 11 includes a processor, a memory, a control circuit, an antenna, and an input / output device.
  • the processor is mainly used to process the communication protocol and communication data, and control the entire terminal device, execute a software program, and process the data of the software program, for example, to support the terminal device to execute the data scrambling method embodiment described above. action.
  • the memory is mainly used for storing software programs and data, for example, storing the first uplink resource set and / or the second uplink resource set described in the foregoing embodiment, and so on.
  • the control circuit is mainly used for conversion of baseband signals and radio frequency signals and processing of radio frequency signals.
  • the control circuit and the antenna can also be called a transceiver, which is mainly used to send and receive radio frequency signals in the form of electromagnetic waves, such as receiving information about the configuration of communication equipment, receiving data sent by network equipment, sending uplink data, and so on.
  • Input / output devices such as a touch screen, a display screen, and a keyboard, are mainly used to receive data input by the user and output data to the user.
  • the processor can read the software program in the storage unit, interpret and execute the instructions of the software program, and process the data of the software program, such as performing related operations of the terminal device in the foregoing method embodiments.
  • the processor performs baseband processing on the data to be sent, and then outputs the baseband signal to the radio frequency circuit.
  • the radio frequency signal is sent out in the form of electromagnetic waves through an antenna.
  • the RF circuit receives the RF signal through the antenna, converts the RF signal into a baseband signal, and outputs the baseband signal to the processor.
  • the processor converts the baseband signal into data and processes the data.
  • FIG. 11 shows only one memory and a processor. In an actual terminal device, there may be multiple processors and memories.
  • the memory may also be referred to as a storage medium or a storage device, which is not limited in the embodiment of the present invention.
  • the processor may include a baseband processor and a central processor.
  • the baseband processor is mainly used to process communication protocols and communication data
  • the central processor is mainly used to control and execute the entire terminal device.
  • the processor in FIG. 11 integrates the functions of the baseband processor and the central processing unit.
  • the baseband processor and the central processing unit may also be independent processors, which are interconnected through technologies such as a bus.
  • the terminal device may include multiple baseband processors to adapt to different network standards, the terminal device may include multiple central processors to enhance its processing capabilities, and various components of the terminal device may be connected through various buses.
  • the baseband processor may also be expressed as a baseband processing circuit or a baseband processing chip.
  • the central processing unit may also be expressed as a central processing circuit or a central processing chip.
  • the function of processing communication protocols and communication data may be built in the processor or stored in the storage unit in the form of a software program, and the processor executes the software program to implement the baseband processing function.
  • the antenna and the control circuit having a transmitting and receiving function may be regarded as a communication unit or a transmitting and receiving unit of a terminal device
  • the processor having a processing function may be regarded as a determining unit or a processing unit of the terminal device.
  • the terminal device includes a transceiver unit 101 and a processing unit 102.
  • the transceiver unit may also be referred to as a transceiver, a transceiver, a transceiver device, and the like.
  • the device for implementing the receiving function in the transceiver unit 101 can be regarded as a receiving unit, and the device for implementing the transmitting function in the transceiver unit 101 can be regarded as a transmitting unit, that is, the transceiver unit 101 includes an example of a receiving unit and a transmitting unit.
  • the receiving unit may also be called a receiver, a receiver, a receiving circuit, etc.
  • the sending unit may be called a transmitter, a transmitter, or a transmitting circuit.
  • FIG. 12 is a schematic structural diagram of another device according to an embodiment of the present application.
  • the device may be a network device shown in FIG. 9.
  • the device may also be a chip or a circuit.
  • the device performs related operations of the network device in the foregoing method.
  • the device may include a processor 610 and a memory 620.
  • the memory 620 is configured to store instructions
  • the processor 610 is configured to execute instructions stored in the memory 620 to enable the device to implement related operations of the foregoing network device, such as a scrambling identification configuration method and / or a data scrambling method.
  • the network may further include a receiver 640 and a transmitter 650. Furthermore, the network may further include a bus system 630.
  • the processor 610, the memory 620, the receiver 640, and the transmitter 650 are connected through a bus system 630.
  • the processor 610 is configured to execute instructions stored in the memory 620 to control the receiver 640 to receive signals and to control the transmitter 650 to send signals.
  • the receiver 640 and the transmitter 650 may be the same or different physical entities. When they are the same physical entity, they can be collectively referred to as transceivers.
  • the memory 620 may be integrated in the processor 610, or may be provided separately from the processor 610.
  • the functions of the receiver 640 and the transmitter 650 may be considered to be implemented through a transceiver circuit or a dedicated chip for transceiver.
  • the processor 610 may be implemented by a dedicated processing chip, a processing circuit, a processor, or a general-purpose chip.
  • a manner of using a general-purpose computer may be considered to implement the communication device or the network device provided in the embodiment of the present application.
  • the program code that will implement the functions of the processor 610, the receiver 640, and the transmitter 650 is stored in the memory.
  • the general-purpose processor implements the functions of the processor 610, the receiver 640, and the transmitter 650 by executing the code in the memory, such as processing.
  • the device 610 may call the program code in the memory 620, or perform related operations of the configuration unit, the sending unit, and the like in the embodiment shown in FIG. 9 based on the receiver 640 and the transmitter 650, or may also perform the implementation shown in FIG. 10
  • FIG. 13 is a schematic structural diagram of a network device according to an embodiment of the present application.
  • the network device may be a base station, which can send related control information and configuration information to terminal devices, and send and receive data. Take the structure of the base station as an example for illustration. As shown in FIG. 13, the base station can be applied to the system shown in FIG. 1.
  • the base station includes one or more radio frequency units, such as a remote radio unit (RRU) 201 and one or more baseband unit (BBU) (also referred to as a digital unit, DU) 202.
  • RRU remote radio unit
  • BBU baseband unit
  • DU digital unit
  • the RRU 201 may be referred to as a transceiver unit, a transceiver, a transceiver circuit, or a transceiver, etc., and may include at least one antenna 2011 and a radio frequency unit 2012.
  • the RRU201 part is mainly used for transmitting and receiving radio frequency signals and converting radio frequency signals and baseband signals, for example, for sending terminal failure response information described in the foregoing embodiment to a terminal device.
  • the BBU202 part is mainly used for baseband processing and controlling base stations.
  • the RRU 201 and the BBU 202 may be physically located together or physically separated, that is, a distributed base station.
  • the BBU 202 is a control center of a base station, and may also be referred to as a processing unit, which is mainly used to complete baseband processing functions, such as channel coding, multiplexing, modulation, spreading, and so on.
  • the BBU processing unit
  • the BBU may be used to control a base station to execute an operation process of a network device in the foregoing method embodiment.
  • the BBU 202 may be composed of one or more boards, and multiple boards may jointly support a single access system wireless access network (such as an LTE network), or may separately support wireless systems of different access systems. Access Network.
  • the BBU 202 further includes a memory 2021 and a processor 2022.
  • the memory 2021 is used to store necessary instructions and data.
  • the memory 2021 stores the first uplink resource set and / or the second uplink resource set in the foregoing embodiment.
  • the processor 2022 is configured to control the base station to perform necessary actions, for example, to control the base station to execute the operation procedure of the network device in the foregoing method embodiment.
  • the memory 2021 and the processor 2022 may serve one or more single boards. That is, the memory and processor can be set separately on each board. It is also possible that multiple boards share the same memory and processor. In addition, the necessary circuits can be set on each board.
  • the embodiment of the present application further provides a communication system, which includes the foregoing one or more network devices, and one or more terminal devices.
  • the processor may be a Central Processing Unit (“CPU"), and the processor may also be another general-purpose processor, a digital signal processor (DSP), or a dedicated integration. Circuits (ASICs), off-the-shelf programmable gate arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.
  • a general-purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
  • the memory may include read-only memory and random access memory, and provide instructions and data to the processor.
  • a portion of the memory may also include non-volatile random access memory.
  • the bus system may also include a power bus, a control bus, and a status signal bus.
  • a power bus may also include a power bus, a control bus, and a status signal bus.
  • various buses are marked as a bus system in the figure.
  • each step of the above method may be completed by an integrated logic circuit of hardware in a processor or an instruction in a form of software.
  • the steps of the method disclosed in combination with the embodiments of the present application may be directly implemented by a hardware processor, or may be performed by a combination of hardware and software modules in the processor.
  • the software module may be located in a mature storage medium such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, or an electrically erasable programmable memory, a register, and the like.
  • the storage medium is located in a memory, and the processor reads the information in the memory and completes the steps of the foregoing method in combination with its hardware. To avoid repetition, it will not be described in detail here.
  • the size of the sequence numbers of the above processes does not mean the order of execution.
  • the execution order of each process should be determined by its function and internal logic, and should not deal with the embodiments of the present invention.
  • the implementation process constitutes any limitation.
  • the disclosed systems, devices, and methods may be implemented in other ways.
  • the device embodiments described above are only schematic.
  • the division of the unit is only a logical function division.
  • multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, which may be electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, may be located in one place, or may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objective of the solution of this embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist separately physically, or two or more units may be integrated into one unit.
  • the computer program product includes one or more computer instructions.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be from a website site, computer, server, or data center Transmission by wire (for example, coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (for example, infrared, wireless, microwave, etc.) to another website site, computer, server, or data center.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, a data center, and the like that includes one or more available medium integration.
  • the available medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (Solid State Disk (SSD)), and the like.
  • a magnetic medium for example, a floppy disk, a hard disk, a magnetic tape
  • an optical medium for example, a DVD
  • a semiconductor medium for example, a solid state disk (Solid State Disk (SSD)

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Abstract

本申请实施例提供了一种链路失败恢复方法及相关设备，该链路失败恢复方法中，终端设备可以根据空间相关参数的信息，在第一上行资源上发送第一指示信息以指示N个第二小区中的第i个小区的链路失败；相应的，网络设备可以根据该空间相关参数的信息，在第一上行资源上接收第一指示信息，并根据该第一指示信息发送链路失败恢复响应信息，来实现链路失败的恢复。由于空间相关参数的信息为用于发送第一小区的信道和/或信号的空间相关参数的信息，第一上行资源为第一小区的上行资源，因此网络设备不需要配置第二小区的多个参考信号资源关联的用于指示该第二小区链路失败的多个上行资源，从而降低了资源开销。

Description

链路失败恢复方法及相关设备 技术领域
本申请涉及通信技术领域，尤其涉及一种链路失败恢复方法及相关设备。
背景技术
随着智能终端设备的发展，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，成为下一代通信系统的候选频段。另外，现代通信系统通常使用多天线技术来提高系统的容量、覆盖，因此，采用高频频段还可以大大减小多天线配置的尺寸，从而便于站址获得更多天线的步骤。
然而，高频频段会因为大气、植被等因素的影响，会进一步加剧无线传播的损耗。为了克服无线传播的损耗，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，基于波束赋形技术的信号可包括广播信号、同步信号以及小区特定的参考信号等。
然而，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，从而出现接收的信号频繁中断的问题。为了解决该问题，涉及相应的链路失败恢复方法，基站会为每个载波配置上行资源集合，该上行资源集合中每个上行资源关联一个参考信号，当终端设备发现链路失败后，可以利用该上行资源集合中新识别的参考信号对应的上行资源来发送链路失败恢复请求信息，从而使得基站重建新的链路。
然而，该链路失败恢复方法需要基站为每个载波配置用于发送链路失败请求信息的上行资源集合，资源开销较大。
发明内容
本申请提供一种链路失败恢复方法及相关设备，能够降低链路失败恢复所需的资源开销。
一方面，本申请实施例提供一种链路失败恢复方法，该方法中，终端设备根据空间相关参数的信息，在第一上行资源上发送第一指示信息；其中，所述空间相关参数的信息为用于发送或接收第一小区的信道和/或信号的空间相关参数的信息；所述第一指示信息用于指示N个第二小区中的第i个小区的链路失败，所述第一上行资源为所述第一小区的上行资源。
其中，所述N为大于或等于1的整数，所述i为大于或等于1且小于或等于所述N的整数。
可见，该实施方式中，终端设备在第一小区的上行资源上，利用第一小区发送或接收信道的空间相关参数的信息来发送N个第二小区中第i个小区的链路失败，避免了网络设备需要配置第二小区的多个参考信号资源关联的用于指示第二小区的链路失败的多个上行资源，因此，本申请实施例降低了链路失败恢复所需的资源开销。
该实施方式，在上下行有互易性时，避免了网络设备配置第二小区的多个候选的下行参考信号关联的用于发送第二小区的链路失败请求信息的多个上行资源，从而节省了资源开销。在上下行没有互易性时，该实施方式避免了网络设备配置第二小区的多个上行参考信号关联的用于发送第二小区的链路失败请求信息的多个上行资源，从而节省了资源开销。
也就是说，链路失败是一个突发事件，避免网络设备周期性分配每个第二小区的多个参考信号资源关联的上行资源，而是采用用于发送或接收第一小区的信道和/或信号的空间相关参数的信息和上行资源来发送第二小区的链路失败的相关信息，从而节省了资源开销。本申请实施例中，空间相关参数的信息包括准共址(Quasi-collocation,QCL)假设信息、空间相关信息(Spatial Relation)等。以下对该空间相关参数的信息的可选的实施方式进行阐述。
在一种可选的实施方式中，空间相关参数的信息可以为一个泛指的概念，即并不配置空间相关参数的信息具体为什么，而是终端设备可以轮询多个发送波束，或者多个接收波束对应的发送波束，来发送第一指示信息；或者，终端设备可以采用波束赋形方法来发送第一指示信息，即终端设备在第一上行资源上发送第一指示信息。再或者，该空间相关参数的信息可以为网络设备指定的一个参考信号关联的QCL信息或空间相关信息，本申请实施例不做限定。
在一种可选的实施方式中，空间相关参数的信息为用于接收所述第一小区的物理下行控制信道PDCCH的准共址QCL假设信息。也就是说，该空间相关参数的信息为终端设备接收第一小区的PDCCH所采用的接收波束对应的发送波束。
在一种示例中，该QCL假设信息为所述第一小区的控制资源集合中索引值或标识最小的控制资源集合的QCL假设信息。第一小区的PDCCH有一个或多个，该一个或多个PDCCH可以承载在一个或多个CORESET上，该示例中，将用于PDCCH检测的多个CORESET资源中的索引值或标识最小的控制资源集合的QCL假设信息作为用于发送第一指示信息的空间相关参数的信息。
在另一种示例中，该QCL假设信息为所述第一小区的公共搜索空间集合CSS的QCL假设信息，或者为所述第一小区的公共搜索空间集合CSS所在的控制资源集合的QCL假设信息。
在另一种可选的实施方式中，所述空间相关参数的信息为用于发送所述第一小区的物理上行控制信道PUCCH的空间相关信息。也就是说，该空间相关参数的信息为终端设备发送第一小区的PUCCH所采用的发送波束。可选的，该PUCCH的空间相关信息为所述第一小区的PUCCH中索引值或标识最小的PUCCH的空间相关信息，或者为用于发送对所述第i个小区的调度请求信息的PUCCH的空间相关信息。
在又一种可选的实施方式中，所述空间相关参数的信息为所述第一小区的同步信号广播信道块SSB资源的空间相关参数的信息，也就是说，该空间相关参数的信息为终端设备接收给SSB所采用的接收波束对应的发送波束。可选的，该SSB为终端设备初始接入第一小区时所接收的SSB。
在又一种可选的实施方式中，所述空间相关参数的信息为用于承载所述第一小区的链路失败恢复请求信息的信道的空间相关信息。
可见，上述各种实施方式所述的空间相关参数的信息，能够增加网络设备接收到该第 一指示信息的概率。
其中，除上述可选的实施方式外，空间相关参数的信息在第一小区也发生了链路失败时，在具体不同的情况下可以有不同的实施方式。比如，可包括的情况：情况一，第一小区和第i个小区可能同时发生了链路失败；情况二，第一小区先发生了链路失败，第i个小区后发生了链路失败；情况三，第i个小区先发生了链路失败，但还未接收到网络设备返回的响应信息，第一小区也发生了链路失败，涉及的可选的实施方式包括：
在一种示例中，终端设备可以在发送了第一小区的链路失败恢复请求信息后，再发送第一指示信息。该情况下，终端设备可以利用终端设备承载第一小区的链路失败恢复请求信息的信道的空间相关信息来发送第一指示信息。即空间相关参数的信息为用于发送第一小区的链路失败恢复请求信息的信道的空间相关信息。该示例可适应于上述三种情况中的情况一和情况二。
在另一种示例中，终端设备可以在接收到第一小区的链路失败恢复响应信息之后，再发送第一指示信息。该情况下，终端设备利用终端设备能够接收到第一小区的链路失败恢复响应信息的信道的空间相关信息来发送第一指示信息。即空间相关参数的信息为用于承载第一小区的链路失败响应信息的信道的空间相关信息。也可以说，该空间相关参数的信息为用于承载第一小区链路失败恢复请求信息的信道的空间相关信息且网络设备能够接收到该链路失败恢复请求信息并返回第一小区的链路失败响应信息。该示例可适应于上述三种情况中的情况一和情况二。该示例中，终端设备可能多次发送了第一小区的链路失败恢复请求信息，但能够收到网络设备返回的链路失败恢复响应信息的信道的空间相关信息可靠性可能更好，因此，该示例相比于上述示例，能够进一步的增加网络设备接收到第一指示信息的概率。
在又一种示例中，终端设备可以在接收到第一小区的重配信息之后，再发送第一指示信息。其中，终端设备利用网络设备发送的重配信息，可以成功恢复第一小区的链路。该情况下，终端设备可以利用该重配信息来发送第一指示信息；或者，第一小区已重建链路，终端设备可利用上述各种实施方式所述的空间相关参数的信息，比如，空间相关参数的信息为第一小区激活的QCL假设信息或空间相关信息，如为用于接收所述第一小区的PDCCH的QCL假设信息，或者为用于发送所述第一小区的PUCCH的空间相关信息，或者为第一小区的SSB资源的空间相关参数的信息等等。该示例可适应于上述三种情况中情况一和情况二。
在又一种示例中，终端设备可以在确定了第i个小区发生了链路失败，就采用之前所述的空间相关参数的信息的实施方式来发送第一指示信息，不必考虑第一小区是否发生了链路失败，或者第一小区的链路失败恢复过程，该示例可以适应于上述三种情况中的任一种。该示例能够更加及时的上报第一指示信息。
其中，针对情况三，终端设备确定了第i个小区发生了链路失败后，采用之前所述的空间相关参数的信息的实施方式发送第一指示信息，但还没收到网络设备针对该第i个小区返回的响应信息，就发现第一小区也发生了链路失败，此时，空间相关参数的信息可以采用上述各种示例所述的方式。
本申请实施例中，第一上行资源为用于发送第一指示信息的上行资源，而不是限定第 一上行资源为第一上行资源集合中的上行资源。
其中，第一上行资源也可以包括多种实施方式，以下进行详细阐述。
在一种可选的实施方式中，所述第一上行资源为第一上行资源集合中的物理随机接入信道PRACH资源，所述第一上行资源集合为配置的用于发送所述第一小区的链路失败恢复请求信息的资源的集合。
在另一种可选的实施方式中，所述第一上行资源为第一上行资源集合中第一参考信号关联的PRACH资源，所述第一参考信号为与所述第一小区激活的QCL假设信息或空间相关信息相关联的参考信号，所述第一上行资源集合为配置的用于发送所述第一小区的链路失败恢复请求信息的资源的集合。由于激活的QCL信息或空间相关信息相关联的参考信号的信道质量相对较好，从而，可以增加第一指示信息发送成功的概率。
进一步的，所述第一上行资源集合中第二参考信号关联的PRACH资源用于发送所述第一小区的链路失败恢复请求信息，所述第二参考信号为与所述第一小区非激活的QCL假设信息或空间相关信息相关联的参考信号。
也就是说，可以预先协议约定或信令配置，用于发送N个第二小区的链路失败所采用的第一上行资源为第一上行资源集合中激活的QCL信息或空间相关信息相关联的参考信号所关联的PRACH资源；并且，预先协议约定或信令配置，用于发送第一小区的链路失败所采用的上行资源为第一上行资源集合中非激活的QCL信息或空间相关信息相关联的参考信号所关联的PRACH资源。这样，网络设备在接收到激活的QCL信息或空间相关信息相关联的参考信号所关联的PRACH资源发送的链路失败时，可以确定是第二小区中的小区发生了链路失败；网络设备在接收到非激活的QCL信息或空间相关信息相关联的参考信号所关联的PRACH资源发送的链路失败时，可以确定是第一小区发生了链路失败。
在又一种可选的实施方式中，第一小区也发生链路失败的情况，比如上文所述的情况一至三，该第一上行资源可以为第一上行资源集合中用于发送第一小区的链路失败恢复请求信息的PRACH资源。
在又一种可选的实施方式中，所述第二上行资源集合为在所述第一小区的上行资源中为所述N个第二小区配置的M个用于发送链路失败恢复请求信息的PRACH资源的集合。即网络设备可以在第一小区的上行资源上配置M个用于发送该N个第二小区的链路失败恢复的PRACH资源，该M个PRACH资源称为第二上行资源集合。故第一上行资源为第二上行资源集合中的物理随机接入信道PRACH资源。其中，所述M为大于或等于1，且小于或等于所述N的整数。
在一种示例中，当M＝1，即网络设备可以在第一小区的上行资源上配置一个用于发送该N个第二小区的链路失败恢复的PRACH资源，则该N个第二小区中的小区发生链路失败时，都可以利用该PRACH资源来发送链路失败恢复请求的信息，比如第一指示信息。
在另一种示例中，当所述N等于所述M时，所述第二上行资源集合的一个PRACH资源与所述N个第二小区中的一个第二小区一一对应；所述第一上行资源为所述第二上行资源集合中所述第i个小区对应的PRACH资源。
该示例中，由于网络设备接收到该第一指示信息，就能够基于该第一上行资源获知发生了链路失败的为具体哪个小区，因此，所述第一指示信息还用于指示所述第i个小区的 标识信息。
在又一种示例中，当所述N大于所述M时，所述第二上行资源集合中的一个PRACH资源与P个第二小区组中的一个第二小区组相对应，所述N个第二小区包括所述P个第二小区组，一个第二小区组包含一个或多个第二小区，所述P为大于等于1且小于所述N的整数；所述第一上行资源为所述第二上行资源集合中所述第i个小区所属的第二小区组对应的PRACH资源。
其中，P个第二小区组中一个第二小区组与第二上行资源集合中一个PRACH资源一一对应，所述第一指示信息还用于指示所述第i个小区所属的第二小区组的标识信息。即网络设备接收第一指示信息，就能够基于该第一上行资源获知发生链路失败的小区为N个第二小区中的哪个第二小区组。
在又一种可选的实施方式中，所述第一上行资源为在所述第一小区的上行资源上配置的专用于发送所述N个第二小区的链路失败恢复请求信息的物理上行控制信道PUCCH资源。
在一种示例中，该第一指示信息包含所述第i个小区的标识信息、第三参考信号信息和第四参考信号信息中的至少一个；其中，所述第三参考信号信息为信道质量大于或等于第一门限的参考信号的信息，所述第四参考信号信息为信道质量小于或等于第二门限的参考信号的信息。这样，终端设备利用该专用的PUCCH资源来发送第一指示信息，能够更加及时的告知网络设备发生了链路失败的小区的上述相关信息。
本申请实施例中，第一上行资源为第一上行资源集合中的PRACH资源，或者第二上行资源集合中的PRACH资源时，若网络设备接收到第一指示信息后，还需要终端设备上报链路失败的第i个小区的候选参考信号，故该链路失败恢复方法还可以包括以下步骤：终端设备接收第一信令，所述第一信令用于指示第三上行资源；所述终端设备在所述第三上行资源上发送第二指示信息，所述第二指示信息用于指示所述第i个小区的标识信息、第三参考信号信息和第四参考信号信息中的至少一个；其中，所述第三参考信号信息为信道质量大于或等于第一门限的参考信号的信息，所述第四参考信号信息为信道质量小于或等于第二门限的参考信号的信息。
本申请实施例中，网络设备接收到第一指示信息后，根据第一指示信息所采用的第一上行资源，能够识别出发生链路失败的小区为N个第二小区中的小区、发生链路失败的小区所在的第二小区组或者发生链路失败的小区，因此，网络设备还可以通过第一信令触发所述N个第二小区、所述第i个小区所在的第二小区组或者所述第i个小区的候选参考信号资源集合。从而避免现有技术中，网络设备周期性触发每个小区的候选参考信号资源集合，发送各参考信号所导致的资源开销。其中，第一信令触发候选参考信号资源集合，可以理解为第一信令指示候选参考信号资源集合的发送。
本申请实施例中，所述第三上行资源为物理上行共享信道PUSCH资源或PRACH资源。
其中，该PUSCH资源是专用于发送N个第二小区的链路失败的资源，比如，专用于发送第二指示信息的。
其中，第三上行资源为PRACH资源时，该PRACH资源为第一小区的第一上行资源集合中的PRACH资源。此时，第一上行资源集合中每个PRACH资源不仅要与第一小区的候 选参考信号资源集合中的下行参考信号关联，还会与N个第二小区中每个小区的候选参考信号资源集合中的下行参考信号关联，从而使得终端设备利用第三上行资源上报第二指示信息时，网络设备能够基于第一指示信息和该第三上行资源关联的下行参考信号，获知终端设备针对发生链路失败的小区确定的候选的下行参考信号。其中，第一指示信息就需要采用上述实施方式中能够告知网络设备发生链路失败的小区的标识信息的实施方式。可见，该实施方式与现有技术中配置第二小区的多个参考信号资源关联的用于指示该第二小区链路失败的多个上行资源相比，依旧能够节省资源开销。
比如，上述实施方式中N＝M时，一个PRACH资源对应一个第二小区，网络设备能够基于第一指示信息采用的第二上行资源集合中的PRACH资源获知第二小区的标识信息，进一步通过上述第三上行资源为第一上行资源集合中的一个PRACH资源，获知终端设备针对该第二小区确定的候选的下行参考信号。假设该第二小区的候选参考信号资源集合中包括X个下行参考信号，则现有技术中，网络设备需要为该第二小区配置X个PRACH资源，而该实施方式如上所述为该一个第二小区配置一个PRACH资源即可上报上述信息，因此，该实施方式依旧能够节省资源开销。
本申请实施例中，所述第一信令为MAC-CE信令或DCI信令。
在一种示例中，该MAC-CE信令或该DCI信令为专用于指示该第三上行资源的信令。
其中，该DCI信令可由专用的无线网络临时标识加扰，或者，该DCI信令中携带专用指示，以通知终端设备该DCI调度的PUSCH资源为用于发送链路失败恢复请求信息的资源。
可选的，网络设备为终端设备配置的第一上行资源集合和第二上行资源集合中的PRACH资源也可以替换为PUCCH资源，即第一上行资源集合为用于发送第一小区的链路失败恢复请求信息的PUCCH资源的集合，第二上行资源集合为用于发送N个第二小区的链路失败恢复请求信息的PUCCH资源的集合。该实施方式可以结合上述第一上行资源对应的各种实施方式中的任一种，比如，上述第一上行资源为第一上行资源集合中的PRACH资源就可以相应的替换为：第一上行资源为第一上行资源集合中的PUCCH资源。另外，该实施方式与专用于发送N个第二小区的链路失败恢复请求信息的PUCCH资源的不同之处在于，该实施方式的PUCCH资源可以不携带候选的参考信号信息，如第三参考信号信息和/或第四参考信号信息，故该实施方式还需结合上述所述的第一信令的相关内容，即利用第一信令指示的第三上行资源来上报的参考信号信息，如第三参考信号信息和/或第四参考信号信息。
在上述一些实施方式中，所述第一指示信息或所述第二指示信息用于指示所述第i个小区的标识信息，还用于指示所述第三参考信号信息和/或所述第四参考信号信息时，所述第i个小区的标识信息与所述第三参考信号信息和/或所述第四参考信号信息独立编码。
其中，独立编码是指标识信息与所述第三参考信号信息和/或所述第四参考信号信息是分别进行编码获得的第一指示信息或第二指示信息，网络设备需要识别出标识信息，才能获知第三参考信号信息和/或所述第四参考信号信息的比特数，即才能识别出第三参考信号信息和/或所述第四参考信号信息。比如，标识信息由Q1个比特表示，第三参考信号信息和/或第四参考信息由Q2个比特表示，所述终端设备对该Q1个比特进行编码获得第一信 息，对该Q2个比特进行编码获得第二信息，所述第一指示信息或所述第二指示信息包括所述第一信息与第二信息。网络设备根据所述第一指示信息或第二指示信息中承载标识信息的Q1比特进行解码获得标识信息；网络设备根据标识信息，对所述第一指示信息或第二指示信息中的用于承载第三参考信息和或第四参考信息的Q2比特进行解码获得所述第三参考信息和/或第四参考信息。
本申请实施例中，所述第一指示信息的负载的大小和/或所述第二指示信息的负载的大小与所述第一上行资源相关，以下从不同的实施方式进行阐述。
在一种实施方式中，发送第一指示信息的第一上行资源为网络设备为N个第二小区配置的专用于发送链路失败恢复请求信息的PUCCH资源，则：
该第一指示信息需要指示第i个小区的标识信息，以及第三参考信号信息和/或第四参考信号信息。由于终端设备和网络设备均知道第二小区的数量，故该第i个小区的标识信息的比特数为固定值，比如
Figure PCTCN2019099468-appb-000001
而第三参考信号信息和/或第四参考信号信息的比特数与该标识信息标识的各小区的候选参考信号资源集合中下行参考信号的个数有关。
因此，第一指示信息的负载大小为固定值时，第三参考信号信息的比特数基于N个第二小区对应的多个候选参考信号资源集合中下行参考信号个数最多的候选参考信号资源集合来确定，第四参考信号信息的比特数基于N个第二小区对应的多个波束失败检测参考信号资源集合中的下行参考信号个数最多的失败检测参考信号资源集合来确定。假设下行参考信号个数最多的候选参考信号资源集合包含Y个，可选地，第一指示信息的负载可根据
Figure PCTCN2019099468-appb-000002
来确定。
第一指示信息的负载大小为非固定值时，第三参考信号信息的比特数随着标识信息所指示的小区的候选参考信号资源集合中下行参考信号个数的变化而变化。第四参考信号信息的比特数基于标识信息所指示的小区的波束失败检测参考信号资源集合中下行参考信号个数的变化而变化。
在另一种可选的实施方式中，第一上行资源为第一上行资源集合中的PRACH资源的情况，或者当第一上行资源为第一上行资源集合中的激活的QCL假设信息或空间相关信息关联的下行参考信号关联的PRACH资源的情况，第一指示信息无法告知网络设备发生链路失败的小区的标识信息。
因此，第二指示信息中标识信息的比特数与终端设备连接的小区的总数有关；若第二指示信息的负载的大小为固定值，则第二指示信息中第三参考信号信息的比特数是根据终端设备所有小区的候选参考信号资源集合中下行参考信号个数最多的候选参考信号资源集合相关，第四参考信号信息的比特数是根据终端设备所有小区的波束失败检测参考信号资源集合中下行参考信号个数最多的波束失败检测参考信号资源集合相关；若第二指示信息的负载的大小为非固定值，则第二指示信息中第三参考信号信息的比特数是根据标识信息所指示的小区的候选参考信号资源集合中下行参考信号个数的变化而变化，第四参考信号信息的比特数是根据标识信息所指示的小区的波束失败检测参考信号资源集合中下行参考信号个数的变化而变化。
其中，该实施方式中，该小区的总数可以为终端设备中需要进行链路失败恢复的小区的个数。或者，针对共享相同的空间相关参数的信息的多个小区称为小区组，该小区的总 数可以为不同的空间相关参数的信息对应的多个小区组的个数。或者，该小区的总数可以为没有上行资源的小区的个数，或者可以为高频的小区的个数。
在又一种可选的实施方式中，当第一上行资源为第一上行资源集合中的激活的QCL或空间相关信息关联的下行参考信号关联的PRACH资源，且用于发送所述第一小区的链路失败恢复请求信息的上行资源为第一上行资源集合中非激活的QCL信息或空间相关信息关联的参考信号所关联的PRACH资源的情况；或者第一上行资源为第二上行资源集合中的PRACH资源的情况，由于第一指示信息能够指示是N个第二小区中的小区发生了链路失败，此时，第二指示信息中标识信息的比特数与N相关，比如为
Figure PCTCN2019099468-appb-000003
相应的，若第二指示信息的负载的大小为固定值，则第二指示信息中第三参考信号信息的比特数是根据N个第二小区中每个小区的候选参考信号资源集合中下行参考信号个数最多的候选参考信号资源集合相关，第四参考信号信息的比特数是根据N个第二小区中每个小区的波束失败检测参考信号资源集合中下行参考信号个数最多的波束失败检测参考信号资源集合相关；若第二指示信息的负载的大小为非固定值，则第二指示信息中第三参考信号信息的比特数是根据标识信息所指示的第二小区的候选参考信号资源集合中下行参考信号个数的变化而变化，第四参考信号信息的比特数是根据标识信息所指示的第二小区的波束失败检测参考信号资源集合中下行参考信号个数的变化而变化。
在又一种可选的实施方式中，当N等于所述M时，第一上行资源为所述第二上行资源集合中所述第i个小区对应的PRACH资源，即第一指示信息还用于指示所述第i个小区的标识信息，第二指示信息就不必包含第i个小区的标识信息，只需包含第三参考信号信息和/或第四参考信号信息。其中，第一指示信息还用于指示所述第i个小区的标识信息，也就是说，该实施方式中，由于第二上行资源集合中PRACH资源与每个第二小区之间的关联关系，使得网络设备可以根据接收该第一指示信息的PRACH资源来确定小区的标识信息，而不是第一指示信息包含小区的标识信息。
因此，若第二指示信息的负载大小为固定值，则第三参考信号信息的比特数与N个第二小区中每个小区的候选参考信号资源集合中下行参考信号个数最多的候选参考信号资源集合相关，第四参考信号信息的比特数与N个第二小区中每个小区的波束失败检测参考信号资源集合中下行参考信号个数最多的波束失败检测参考信号资源集合相关；若该第二指示信息的负载大小为非固定值，则第三参考信号信息的比特数与第i个小区的候选参考信号资源集合中下行参考信号的个数相关，第四参考信号信息的比特数与第i个小区的波束失败检测参考信号资源集合中下行参考信号的个数相关。
在又一种可选的实施方式中，当第一上行资源为第二上行资源集合中所述第i个小区所属第二小区组对应的PRACH资源的情况，即第一指示信息还用于指示所述第i个小区所属第二小区组的标识信息，第二指示信息中标识信息可以为第i个小区在该第二小区组的组内标识信息。当第二指示信息的负载的大小为固定值时，该标识信息的比特数根据P个第二小区组中包含第二小区的个数最多的第二小区组来确定，第三参考信号信息的比特数与该第i个小区所属第二小区组对应的多个候选参考信号资源集合中下行参考信号个数最多的候选参考信号资源集合相关，第四参考信号信息的比特数与该第i个小区所属第二小区组对应的多个波束失败检测参考信号资源集合中下行参考信号个数最多的波束失败检测 参考信号资源集合相关。当第二指示信息的负载的大小为非固定值时，该标识信息的比特数根据所述第i个小区所属第二小区组包含的第二小区的个数来确定，第三参考信号信息的比特数与该第i个小区的候选参考信号资源集合中下行参考信号个数相关，即与标识信息指示的小区的候选参考信号资源集合中下行参考信号个数相关；第四参考信号信息的比特数与该第i个小区的波束失败检测参考信号资源集合中下行参考信号个数相关，即与标识信息指示的小区的波束失败检测参考信号资源集合中下行参考信号个数相关。
本申请实施例中，所述第一小区是用于发送对所述第i个小区调度请求信息的资源所在的小区。
另一方面，本申请实施例还提供一种链路失败恢复方法，该链路失败恢复方法是从网络设备侧进行阐述的。其中，该链路失败恢复方法与上述方面所述的链路失败恢复方法相同的内容的具体阐述，可以参照上述内容，此处不再详述。
其中，该方面所述的一种链路失败恢复方法，包括：网络设备根据空间相关参数的信息，在第一上行资源上接收第一指示信息；所述网络设备根据所述第一指示信息发送链路失败响应信息；其中，所述空间相关参数的信息为用于发送或接收第一小区的信道和/或信号的空间相关参数的信息；所述第一指示信息用于指示N个第二小区中的第i个小区的链路失败，所述N为大于或等于1的整数，所述i为大于或等于1且小于或等于所述N的整数；所述第一上行资源为所述第一小区的上行资源。
其中，网络设备根据该第一指示信息发送链路失败响应信息，可以包括：网络设备根据该第一指示信息和/第一上行资源确定发生链路失败的小区的标识信息，以及该小区的候选的下行参考信号信息；网络设备在该标识信息标识的小区的下行资源上利用该下行参考信号信息关联的空间相关信息发送链路失败响应信息。在一种可选的实施方式中，所述空间相关参数的信息为用于接收所述第一小区的物理下行控制信道PDCCH的准共址QCL假设信息；
在一种可选的实施方式中，所述空间相关参数的信息为用于发送所述第一小区的物理上行控制信道PUCCH的空间相关信息。
在一种可选的实施方式中，所述空间相关参数的信息为所述第一小区的同步信号广播信道块SSB资源，
在一种可选的实施方式中，所述空间相关参数的信息为用于承载所述第一小区的链路失败恢复请求信息的信道的空间相关信息。
在一种可选的实施方式中，所述QCL假设信息为所述第一小区的控制资源集合中索引值或标识最小的控制资源集合的QCL假设信息，或者为所述第一小区的公共搜索空间集合CSS的QCL假设信息，或者为所述第一小区的公共搜索空间集合CSS所在的控制资源集合的QCL假设信息。
在一种可选的实施方式中，所述空间相关信息为所述第一小区的PUCCH中索引值或标识最小的PUCCH的空间相关信息，或者为用于发送对所述第i个小区的调度请求信息的PUCCH的空间相关信息。
在一种可选的实施方式中，所述方法还包括：所述网络设备发送第一信令，所述第一信令用于指示第三上行资源；所述网络设备在所述第三上行资源上接收第二指示信息，所 述第二指示信息用于指示所述第i个小区的标识信息、第三参考信号信息和第四参考信号信息中的至少一个；其中，所述第三参考信号信息为信道质量大于或等于第一门限的参考信号的信息，所述第四参考信号信息为信道质量小于或等于第二门限的参考信号的信息；所述网络设备根据所述第一指示信息发送链路失败响应信息，包括：所述网络设备根据所述第一指示信息和第二指示信息发送链路失败响应信息。
在一种可选的实施方式中，所述第一上行资源为第一上行资源集合中的物理随机接入信道PRACH资源，所述第一上行资源集合为配置的用于发送所述第一小区的链路失败恢复请求信息的资源的集合。
在一种可选的实施方式中，所述第一上行资源为第一上行资源集合中第一参考信号关联的PRACH资源，所述第一参考信号为与所述第一小区激活的QCL假设信息或空间相关信息相关联的参考信号，所述第一上行资源集合为配置的用于发送所述第一小区的链路失败恢复请求信息的资源的集合。
在一种可选的实施方式中，所述第一上行资源集合中第二参考信号关联的PRACH资源用于发送所述第一小区的链路失败恢复请求信息，所述第二参考信号为与所述第一小区非激活的QCL假设信息或空间相关信息相关联的参考信号。
在一种可选的实施方式中，所述第一上行资源为第二上行资源集合中的物理随机接入信道PRACH资源，所述第二上行资源集合为在所述第一小区的上行资源中为所述N个第二小区配置的M个用于发送链路失败恢复请求信息的PRACH资源的集合，所述M为大于或等于1，且小于或等于所述N的整数。
在一种可选的实施方式中，当所述N等于所述M时，所述第二上行资源集合的一个PRACH资源与所述N个第二小区中的一个第二小区一一对应；
所述第一上行资源为所述第二上行资源集合中所述第i个小区对应的PRACH资源。
在一种可选的实施方式中，所述第一指示信息还用于指示所述第i个小区的标识信息。
在一种可选的实施方式中，当所述N大于所述M时，所述第二上行资源集合中的一个PRACH资源与P个第二小区组中的一个第二小区组相对应，所述N个第二小区包括所述P个第二小区组，一个第二小区组包含一个或多个第二小区，所述P为大于等于1且小于所述N的正整数；所述第一上行资源为所述第二上行资源集合中所述第i个小区所属的第二小区组对应的PRACH资源。
在一种可选的实施方式中，所述第一指示信息还用于指示所述第i个小区所属的第二小区组的标识信息。
在一种可选的实施方式中，所述第一上行资源为在所述第一小区的上行资源上配置的专用于发送所述N个第二小区的链路失败恢复请求信息的物理上行控制信道PUCCH资源。
在一种可选的实施方式中，所述第一指示信息包含所述第i个小区的标识信息、第三参考信号信息和第四参考信号信息中的至少一个；
其中，所述第三参考信号信息为信道质量大于或等于第一门限的参考信号的信息，所述第四参考信号信息为信道质量小于或等于第二门限的参考信号的信息。
在一种可选的实施方式中，所述第一信令还用于触发所述N个第二小区、所述第i个小区或者所述第i个小区所在的第二小区组的候选参考信号资源集合。
在一种可选的实施方式中，所述第二上行资源为物理上行共享信道PUSCH资源或PRACH资源。
在一种可选的实施方式中，所述第一指示信息或所述第二指示信息用于指示所述第i个小区的标识信息，还用于指示所述第三参考信号信息和/或所述第四参考信号信息时，所述第i个小区的标识信息与所述第三参考信号信息和/或所述第四参考信号信息独立编码。
在一种可选的实施方式中，所述第二指示信息的负载的大小与所述第一上行资源相关。
在一种可选的实施方式中，所述第一指示信息的负载和/或所述第二指示信息的负载的大小为固定值；所述第一指示信息的负载和/或所述第二指示信息的负载的大小与所述N个第二小区对应的多个候选参考信号资源集合中下行参考信号个数最多的候选参考信号资源集合相关。
在一种可选的实施方式中，所述第一小区是用于发送对所述第i个小区调度请求信息的资源所在的小区。
又一方面，本申请还提供一种链路失败恢复方法。该链路失败恢复方法中，终端设备在第一上行资源上发送第一指示信息；第一指示信息用于指示N个第二小区中存在链路失败的小区；第一上行资源为第一小区的上行资源。终端设备接收第一信令；第一信令用于指示第三上行资源；终端设备在第三上行资源上发送第二指示信息，第二指示信息用于指示N个小区中链路失败的第i个小区的标识信息、第三参考信息和第四参考信息中的至少一个。可见，本申请可基于第一小区的上行资源来告知网络设备，N个第二小区中存在链路失败的小区，从而使得网络设备能够指示第三上行资源，使得终端设备能够在第三上行资源上发送链路失败的标识信息或参考信息等。
其中，所述N为大于或等于1的整数。所述第三参考信号信息为信道质量大于或等于第一门限的参考信号的信息，所述第四参考信号信息为信道质量小于或等于第二门限的参考信号的信息。
在一种实施方式中，所述终端设备在第一上行资源上发送第一指示信息，包括：所述终端设备根据空间相关参数的信息，在第一上行资源上发送第一指示信息；所述空间相关参数的信息为用于发送或接收所述第一小区的信道或信号的空间相关参数的信息。
其中，该方面中，第一上行资源、空间相关参数的信息、第一指示信息、第三上行资源、第二指示信息等内容，可参见上述第一方面所述的相关内容，此处不再详述。
又一方面，本申请还提供一种链路失败恢复方法。该链路失败恢复方法中，网络设备在第一上行资源上接收第一指示信息；所述第一指示信息用于指示N个第二小区中存在链路失败的小区；所述N为大于或等于1的整数；所述第一上行资源为第一小区的上行资源；所述网络设备发送第一信令，所述第一信令用于指示第三上行资源；所述网络设备在所述第三上行资源上接收第二指示信息，所述第二指示信息用于指示所述第i个小区的标识信息、第三参考信号信息和第四参考信号信息中的至少一个；其中，所述第三参考信号信息为信道质量大于或等于第一门限的参考信号的信息，所述第四参考信号信息为信道质量小于或等于第二门限的参考信号的信息；所述网络设备根据所述第一指示信息和第二指示信息发送链路失败响应信息。
可见，本申请中，网络设备可基于第一小区的上行资源来获知N个第二小区中存在链 路失败的小区，从而使得网络设备能够指示第三上行资源，使得终端设备能够在第三上行资源上发送链路失败的标识信息或参考信息等。
在一种实施方式中，所述网络设备在第一上行资源上接收第一指示信息，包括：所述网络设备根据空间相关参数的信息，在第一上行资源上接收第一指示信息；所述空间相关参数的信息为用于发送或接收所述第一小区的信道或信号的空间相关参数的信息。
其中，该方面中，第一上行资源、空间相关参数的信息、第一指示信息、第三上行资源、第二指示信息等内容，可参见上述第一方面所述的相关内容，此处不再详述。
又一方面，本申请还提供了一种终端设备，该终端设备具有实现上述方法示例中终端设备的部分或全部功能，比如终端设备的功能可具备本申请中的部分或全部实施例中的功能，也可以具备单独实施本申请中的任一个实施例的功能。所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的单元或模块。
在一种可能的设计中，该终端设备的结构中可包括发送单元和接收单元，所述发送单元和接收单元用于支持终端设备与其他设备之间的通信。所述终端设备还可以包括存储单元，所述存储单元用于与配置单元和发送单元耦合，其保存终端设备必要的程序指令和数据。作为示例，终端设备还可以包括处理器、收发器和存储器等以执行上述发送单元、接收单元或存储单元的功能。
又一方面，本申请还提供了一种网络设备，该网络设备具有实现上述方法示例中网络设备的部分或全部功能，比如网络设备的功能可具备本申请中的部分或全部实施例中的功能，也可以具备单独实施本申请中的任一个实施例的功能。所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的单元或模块。
在一种可能的设计中，该网络设备的结构中可包括接收单元和发送单元，接收单元和发送单元，用于支持网络设备与其他设备之间的通信，所述网络设备还可以包括存储单元，所述存储单元用于与接收单元和发送单元耦合，其保存网络设备必要的程序指令和数据。作为示例，接收单元、发送单元、存储单元可以为处理器、收发器、存储器等。
又一方面，本发明实施例提供了一种通信系统，该系统包括上述方面的至少一个网络设备和至少一个终端设备。在另一种可能的设计中，该系统还可以包括本发明实施例提供的方案中与终端设备、网络设备进行交互的其他设备。
又一方面，本发明实施例提供了一种计算机存储介质，用于储存为上述网络设备所用的计算机软件指令，其包括用于执行上述方法的任一方面所设计的程序。
又一方面，本发明实施例提供了一种计算机存储介质，用于储存为上述终端设备所用的计算机软件指令，其包括用于执行上述方法的任一方面所设计的程序。
又一方面，本申请还提供了一种包括指令的计算机程序产品，当其在计算机上运行时，使得计算机执行上述各方面所述的方法。
又一方面，本申请提供了一种芯片系统，该芯片系统包括处理器，用于支持网络设备上述方面中所涉及的功能，例如，确定或处理上述方法中所涉及的数据和/或信息。在一种可能的设计中，所述芯片系统还包括存储器，所述存储器，用于保存网络设备必要的程序 指令和数据。该芯片系统，可以由芯片构成，也可以包括芯片和其他分立器件。
又一方面，本申请提供了一种芯片系统，该芯片系统包括处理器，用于支持终端设备实现上述方面中所涉及的功能，例如，生成或处理上述方法中所涉及的数据和/或信息。在一种可能的设计中，所述芯片系统还包括存储器，所述存储器，用于保存终端设备必要的程序指令和数据。该芯片系统，可以由芯片构成，也可以包括芯片和其他分立器件。
附图说明
图1为本申请实施例提供的一种通信系统的结构示意图；
图2为本申请实施例提供的一种通信系统的结构示意图；
图3为本申请实施例提供的一种链路失败恢复方法的流程示意图；
图4为本申请实施例提供的另一种链路失败恢复方法的流程示意图；
图5为本申请实施例提供的一种第一上行资源集合的示意图；
图6为本申请实施例提供的一种第二上行资源集合的示意图；
图7为本申请实施例提供的一种QCL信息或空间相关信息关联的参考信号的示意图。
图8是本申请实施例提供的一种终端设备的结构示意图；
图9是本申请实施例提供的一种网络设备的结构示意图；
图10为本申请实施例提供的一种设备的结构示意图；
图11是本申请实施例提供的另一种终端设备的结构示意图；
图12为本申请实施例提供的另一种设备的结构示意图；
图13为本申请实施例提供的另一种网络设备的结构示意图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例进行描述。
本申请的说明书和权利要求书及所述附图中的术语“第一”、“第二”、“第三”和“第四”等是用于区别不同对象，而不是用于描述特定顺序。此外，术语“包括”和“具有”以及它们任何变形，意图在于覆盖不排他的包含。例如包含了一系列步骤或单元的过程、方法、系统、产品或设备没有限定于已列出的步骤或单元，而是可选地还包括没有列出的步骤或单元，或可选地还包括对于这些过程、方法、产品或设备固有的其它步骤或单元。
在本文中提及“实施例”意味着，结合实施例描述的特定特征、结构或特性可以包含在本申请的至少一个实施例中。在说明书中的各个位置出现该短语并不一定均是指相同的实施例，也不是与其它实施例互斥的独立的或备选的实施例。本领域技术人员显式地和隐式地理解的是，本文所描述的实施例可以与其它实施例相结合。
本申请的技术方案可具体应用于各种通信系统中，例如：全球移动通讯系统(Global system for mobile communications，缩写：GSM)、码分多址(Code Division Multiple Access，缩写：CDMA)、宽带码分多址(Wideband Code Division Multiple Access，缩写：WCDMA)、时分同步码分多址(Time Division-Synchronous Code Division Multiple Access，缩写：TD-SCDMA)、通用移动通信系统(Universal Mobile Telecommunications System，缩写： UMTS)、长期演进(Long Term Evolution，缩写：LTE)系统等，随着通信技术的不断发展，本申请的技术方案还可用于未来网络，如5G系统，也可以称为新空口(New Radio，缩写：NR)系统，或者可用于设备到设备(device to device，缩写：D2D)系统，机器到机器(machine to machine，缩写：M2M)系统等等。
本申请涉及的网络设备可以是指网络侧的一种用来发送或接收信息的实体，比如可以是基站，或者可以是传输点(transmission point，缩写：TP)、传输接收点(transmission and receptionpoint，缩写：TRP)、中继设备，或者具备基站功能的其他网络设备等等，本申请不做限定。而本申请涉及的通信设备可以是集中控制模块，或者是其他的网络设备。该通信设备能够为终端设备配置与下行控制信息配置信息或下行控制参数相关联的一个加扰标识；或配置与不同的下行控制信息配置信息或下行控制参数相关联的多个加扰标识。其中，本申请中，通信设备与网络设备可以为同一个设备，也可以为不同的设备。
在本申请中，终端设备是一种具有通信功能的设备，其可以包括具有无线通信功能的手持设备、车载设备、可穿戴设备、计算设备或连接到无线调制解调器的其它处理设备等。在不同的网络中终端设备可以叫做不同的名称，例如：终端设备(terminal)，用户设备(user equipment，缩写：UE)，移动台，用户单元，中继(Relay)，站台，蜂窝电话，个人数字助理，无线调制解调器，无线通信设备，手持设备，膝上型电脑，无绳电话，无线本地环路台等。该终端设备可以是指无线终端设备、有线终端设备。该无线终端设备可以是指向用户提供语音和/或数据连通性的设备，具有无线连接功能的手持式设备、或连接到无线调制解调器的其他处理设备，其可以经无线接入网(如RAN，radio access network)与一个或多个核心网进行通信。
首先，对提出本申请所要解决的技术问题和应用场景进行介绍。
目前，为了实现链路失败恢复，网络设备需要给每个小区配置一个上行资源集合，该上行资源集合包括多个物理随机接入信道(Physical Random Access Channel，PRACH)资源，该小区的候选参考信号资源集合中的参考信号与该上行资源集合中的PRACH资源一一对应，用于发送该小区的链路失败恢复请求信息。
例如，利用一个小区的上行资源集合，终端设备针对该小区进行链路失败恢复的过程，可以包括以下步骤：终端设备确定链路失败；终端设备检测候选参考信号资源集合中参考信号的信道质量，确定信道质量大于预设门限的下行参考信号；终端设备利用上行资源集合中该下行参考信号关联的PRACH资源发送链路失败恢复请求信息；网络设备根据该链路失败恢复请求信息发送链路失败响应信息；终端设备检测控制资源集合，获得链路失败响应信息。
其中，终端设备是利用上行资源集合中确定的下行参考信号关联的PRACH资源来发送链路失败恢复请求信息的，可见，目前的链路失败恢复方法中，针对每个小区，网络设备需要为该小区的候选参考信号资源集合中每个下行参考信号配置一个上行资源，假设该小区的候选参考信号资源集合中包括16个下行参考信号，则需要为该小区配置16个上行资源，而该16个上行资源只能用于链路失败恢复请求信息的发送。每个载波对应一个小区，每个小区对应一个候选参考信号资源集合，需要配置每个小区的多个参考信号资源关联的 用于指示该第二小区链路失败的多个上行资源将更多，导致资源开销巨大。
为了解决上述问题，本申请实施例提供了一种链路失败恢复方法及相关设备，该链路失败恢复方法中，终端设备可以根据空间相关参数的信息，在第一上行资源上发送第一指示信息以指示N个第二小区中的第i个小区的链路失败；相应的，网络设备可以根据该空间相关参数的信息，在第一上行资源上接收第一指示信息，并根据该第一指示信息发送链路失败恢复响应信息，来实现链路失败的恢复。由于空间相关参数的信息为用于发送第一小区的信道和/或信号的空间相关参数的信息，第一上行资源为第一小区的上行资源。这样，网络设备不需要配置第二小区的多个参考信号资源关联的用于指示该第二小区链路失败的多个上行资源，从而降低了资源开销。
图1是本申请实施例提供的一种通信系统100的结构示意图。该通信系统100处于载波聚合场景(carrier aggregation，CA)或双链接场景(DC)中，该通信系统100包括网络设备110和终端设备120，网络设备110与终端设备120通过无线网络进行通信，当终端设备120检测到网络设备110和终端设备120之间的链路发生故障后，终端设备120向网络设备110发送链路失败恢复请求(beam failure recovery request，BFRQ)，网络设备110接收到该BFRQ后，向终端设备120发送链路失败恢复响应(beam failure recovery response，BFRR)。
应理解，图1中网络设备110下可以包括多个小区，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100的传输方向为上行传输时，终端设备120为发送端，网络设备110为接收端，当通信系统100的传输方向为下行传输时，网络设备110为发送端，终端设备120为接收端。
图2是本申请实施例提供的另一种通信系统200的结构示意图。该通信系统200处于双链接(dual connectivity，DC)、载波聚合(CA)或多点协作传输(coordinated multipoint transmission/reception，CoMP)的场景中，该通信系统200包括网络设备210、网络设备220和终端设备230，网络设备210为终端设备230初始接入时的网络设备，负责与终端设备230之间的RRC通信，网络设备220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(CA)的终端设备230与网络设备210和网络设备220相连，网络设备210和终端设备230之间的链路可以为称之为第一链路，网络设备220和终端设备230之间的链路可以称之为第二链路。
当网络设备210和网络设备220可以都向终端设备230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230可以在用于传输BFRQ的上行资源上向网络设备210或者网络设备220发送BFRQ，网络设备210或者网络设备220收到该BFRQ后，向终端设备230发送BFRR。
当该网络设备220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230可以通过该网络设备210恢复该第二链路。
可选地，通信系统200中的网络设备210可以为该终端设备的主网络设备，网络设备220可以为该终端设备的多个辅网络设备中的一个。
一个实施例中，网络设备210可以是主基站，网络设备220可以是辅基站；或者网络设备210可以是辅基站，网络设备220可以是主基站。
本申请实施例中，网络设备210可以为主小区/主服务小区(primary cell/primary serving cell，PCell)所在的基站，辅助主小区(primary secondary cell，PSCell)所在的基站，特殊小区(special cell，SpCell)所在的基站，或者可以是传输接收节点(transmission and reception point，TRP)，辅小区/辅服务小区(secondary cell/secondary serving cell，SCell)所在的基站，该第二网络设备可以为SCell所在的基站，或者可以是TRP。或者，网络设备210可以为TRP，SCell所在的基站，网络设备220可以为PCell，PSCell，SpCell，TRP，SCell所在的基站。
本申请实施例中，第一小区可以为PCell，PSCell，SpCell或者SCell，第二小区可以为SCell；或者，第一小区可以为SCell，第二小区可以为PCell，PSCell，SpCell或者SCell。
其中，有关PCell，PSCell，SCell和SpCell的解释如下：
PCell：CA场景中终端设备驻留的主小区。PSCell：主网络设备通过RRC连接信令配置给终端设备的在辅网络设备上的一个特殊辅助主小区。
SCell：通过RRC连接信令配置给终端设备的小区，工作在辅载波(SCC)上，可以为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。
SpCell：对于DC场景，SpCell指主小区组(master cell group，MSG)的PCell或者辅小区组(secondary cell group，SCG)的PSCell；否则，如CA场景，SpCell指PCell。
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，此时由于SCell没有配置上行资源，PCell是低频也没配置用于链路失败检测的PRACH资源或者PUCCH资源。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。
一个实施例中，本申请实施例的技术方案可以应用于载波聚合(carrier aggregation，CA)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DC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。
本申请实施例中，“一个小区”可以和“另一个小区”属于相同的小区组，或者，属于不同的小区组，不同小区组主要描述DC场景下，小区组1的一个小区可以辅助小区组2的另一个小区恢复链路。
可选地，MCG中的小区辅助SCG中的小区恢复链路。
可选地，SCG中的小区辅助MCG中的小区恢复链路。
还应理解，本申请中，“小区”可以理解为“服务小区”、“载波”。
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。
本申请实施例中，为了检测和恢复链路失败，网络设备需要给终端设备配置用于波束 失败检测的参考信号资源集合(例如，beam failure detection RS resourceconfig或beam failure detection RS或failure detection resources)和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)(也称为候选参考信号资源集合)。此外用于检测链路失败的参考信号还可以通过隐式方式指示，将指示PDCCH的TCI中关联的参考信号作为检测链路失败的参考信号，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。其中，beam failure detection RS set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，则判定为链路失败。其中低于预定门限可以是连续W次低于预定门限或者一定时间段内W次低于预定门限。可选的，该预定门限可以和无线链路失败失步门限(radio link failure(out of sync)OOS)相同。
可选的，链路失败是指用于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，这些概念是相同的含义。链路失败后，终端设备需要从参考信号资源集合中选出信道质量信息(如RSRP、RSRQ、CQI等)高于预定门限的参考信号资源，用于恢复链路。
可选的，该预定门限可以由网络设备配置。这里，beam failure detection RS是用于终端设备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设备进行通信时所使用的波束。
Candidate beam identification RS用于终端设备在判断出网络设备的该发射波束发生通信链路故障后，用于发起链路重配的参考信号集合。
在本申请实施例中，链路失败也可以称为通信故障、通信失败、链路故障、波束失败、波束故障、通信链路失败、通信链路故障等。
在本申请实施例中，链路失败恢复也可以称为恢复网络设备与终端设备通信，通信故障恢复、链路失败恢复、链路故障恢复、波束失败恢复、波束故障恢复通信链路失败恢复、通信链路故障恢复、链路重配等。
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。
本申请实施例中，链路失败恢复请求信息又可以称为通信故障恢复请求信息、通信失败恢复请求信息、链路故障恢复请求信息、波束失败恢复请求信息、波束故障恢复请求信息、通信链路失败恢复请求信息、通信链路故障恢复请求信息、链路重配请求信息、重配请求信息等。
本申请实施例中，链路失败响应信息又可以称为链路失败恢复响应信息、通信失败响应信息、波束失败恢复响应信息、波束失败响应信息、通信链路故障恢复响应信息、通信 链路故障响应信息、通信失败恢复响应信息、通信链路失败响应信息、波束故障恢复响应信息、波束故障响应信息、链路重配响应信息、链路故障恢复响应信息、链路故障响应信息、链路失败恢复响应信息、链路失败响应信息、通信故障恢复响应信息、通信故障响应信息、重配响应信息等。
本申请实施例中，可选地，链路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，链路失败恢复响应信息可以是指在用于发送通信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)，该通信失败恢复响应信息还可以由其他信息加扰，本申请实施例对此并不作限定。
应理解，本申请实施例中的通信失败、通信失败恢复、通信失败恢复请求信息和通信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。
本申请实施例中，网络设备为第一小区配置的用于发送所述第一小区的链路失败的上行资源集合，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。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。另一种可选的实施方式是，该PRACH资源可不与下行参考信号关联，而是可以利用专门配置的PUSCH资源再次上报下行参考信号的信息。
也就是说，上下行互易性场景，下行链路失败，上行链路也发生失败，此时终端设备会使用识别的下行参考信号的接收波束对应的发送波束发送PRACH，所以才需要配置多个PRACH资源。而在上下行非互易性场景，下行链路失败，上行链路可能失败也可能没有失败。
若上行链路也发生失败，那么需要寻找相应的上行参考信号才能发送PRACH，此时可以要不同的PRACH资源关联不同的上行参考信号，但是此时不一定要关联下行参考信号，下行参考信号可能使用下文实施例中的第三上行资源即PUSCH再一次上报。若上行链路没有发生失败，那么可以使用激活的PUCCH的波束或其他可用的上行波束发送PRACH,此时是PRACH可以关联下行参考信号，且不需要PUSCH资源再一次上报。
但是，下行链路失败时，终端设备是不知道上行链路是否失败的，所以在上下行没有互易性的场景，将PRACH资源关联上行参考信号，然后通过专用的PUSCH资源上报下行参考信号的信息。
本申请实施例中，空间相关参数的信息可以包括准共址(Quasi-collocation,QCL)假设信息、空间相关信息(Spatial Relation)等。本申请实施例中，空间相关参数的信息为用于发送或接收第一小区的信道和/或信号的空间相关参数的信息。该信道可以包括控制信道、数 据信道、携带参考信号的信道，等等。其中，该信道可以为PUCCH，PDCCH，PUSCH，PRACH以及物理下行共享信道(Physical Downlink Shared Channel，PDSCH)等等。其中，信号可以为信道状态信息参考信号(channel state information reference signal，CSI-RS)、探测参考信号(Sounding Reference Signal，SRS)、同步信号广播信道块(synchronous signal/PBCH block，SSB)等，或者，该信号可以为是信道状态信息参考信号、追踪参考信号(tracking reference signal，TRS)、同步信号广播信道块(synchronous signal/PBCH block，SSB)等。
其中，准共址(Quasi-collocation,QCL)信息也可以称为同位置假设信息或准共站假设信息。QCL假设信息用于辅助描述终端设备接收侧波束赋形信息以及接收流程等信息。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，从而基于该源参考信号资源标识可推断出目标参考信号的空间特性参数。
其中，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等信息。应理解，满足空间相关信息的两个参考信号或信道的空间特性参数是相同的，从而基于该源参考信号资源标识可推断出目标参考信号的空间特性参数。终端设备可以根据空间相关信息关联的参考信号资源标识的发射波束，发射目标参考信号。
其中，接收波束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。
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、基站发送波束成型、基站接收波束成型、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)，空间发送参数(spatial Tx parameters)等。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假设信息确定接收侧波束赋形或接收处理过程等信息，或者，终端设备根据空间相关信息确定发射侧波束赋形或发射处理过程等信息。
其中，传输配置指示(transmission configuration indicator，TCI)状态是指一个TCI状态(TCI state)可以包含一个或两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/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。
本申请实施例中，控制资源集合(control resource set，CORESET)是网络设备为终端 设备配置的一个或多个资源集合，用于发送PDCCH。网络设备可以在控制资源集合上，向终端设备发送控制信道。此外，网络设备还可以为终端设备配置控制资源集合关联的其他配置，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，该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，E-PDCCH)集合(set)等。
本申请实施例中，公共搜索空间集合(common search space set,CSS)中配置的PDCCH主要用于调度剩余系统信息(remaining system information，RMSI)，其它系统信息(other system information，OSI)，寻呼(Paging)消息，随机接入消息(包括：第二消息(Message2)或第四消息(Message4))中的一种或多种信息。
本申请实施例中，“关联”是指网络设备为终端设备配置的不同信息之间是互为包含关系，或者其中一个信息包含另一信息的索引、标识，或者两个信息之间存在对应关系，等等。例如，如图4所示，第一上行资源集合包括网络设备为第一小区配置的用于发送所述第一小区的链路失败恢复请求信息的PRACH资源，还包括每个PRACH资源对应的下行参考信号。再例如，如图6所示，第二上行资源集合包括的M个PRACH资源，该M个PRACH资源没有对应的下行参考信号。再例如，如图7所示，QCL假设信息或空间相关信息关联的参考信号，可为QCL假设信息或空间相关信息包含参考信号信息，比如参考信号的索引或标识等，或者可为某个配置信息中包括QCL假设信息或空间相关信息与参考信号信息之间的对应关系等，本申请实施例不做限定。其中，该配置信息可以为控制资源集合等。
可选的，该第一上行资源集合中可以包括多个用于发送第一小区的链路失败恢复请求信息的PRACH资源，每个PRACH资源对应的下行参考信号，以及每个PRACH资源对应的上行参数信号。可选的，第二上行资源集合可以包括M个用于发送N个第二小区的链路失败恢复请求信息的PRACH资源，每个PRACH资源可以有对应的下行参考信号，但可以为无效状态。其中，无效或不配置关联的参考信号也即不配置该PRACH资源的beam信息，使得第一指示信息的发送波束随着第一小区的服务波束(即激活的QCL信息或空间相关信息)动态或半静态的配置。其中，这些关联关系可以为网络设备配置的，也可以是预定义的方式确定的。
本申请实施例中，第一指示信息用于指示N个第二小区中的第i个小区的链路失败。其中，第一指示信息基于第一上行资源的不同，能够指示的信息也不同。比如，第一上行资源为第一上行资源集合中的PRACH资源，则第一指示信息指示终端设备存在小区发生了链路失败。第一上行资源为第一上行资源集合中第一小区激活的QCL信息或空间相关信息对应的PRACH资源且约定在第一上行资源集合中第一小区非激活的QCL信息或空间相关信息对应的PRACH资源用来发送第一小区的链路失败请求信息，则第一指示信息可以指示N个第二小区中存在小区发生了链路失败；第一上行资源为第二上行资源集合中该第i个小区对应的PRACH资源，则该第一指示信息可以指示第i个小区发生了链路失败；或者第一上行资源为网络设备配置的用于发送N个第二小区的链路失败恢复请求信息的PUCCH资源，则第一指示信息就为链路失败恢复请求信息，等等，以下会进行相关阐述。
其中，链路失败恢复请求信息包括了发生链路失败的小区的标识信息、参考信号信息 中的至少一个。链路失败响应信息用于告知终端设备，网络设备已接收到第一指示信息和/或第二指示信息等。
以下结合图1所示的通信系统对本申请提供的多种实施例进行阐述。假设通信系统100中，网络设备110包括第一小区和N个第二小区，第i个小区为N个第二小区中的其中一个，N为大于或等于1的整数。可选的，该第一小区可以为用于发送对所述第i个小区的调度请求信息的资源所在的小区。
其中，本申请提供的链路失败恢复网络设备应用到图2所示的通信系统，比如第i个小区为网络设备220中的小区，第一小区为网络设备210中的小区时，与图1所示的通信系统的不同之处在于，网络设备210接收到第i个小区的标识信息和候选的参考信号信息(如第三参考信号信息和/第四参考信号信息)时，可将该标识信息和候选的参考信号信息发送给网络设备220，由网络设备220利用该候选的参考信号信息在该第i个小区的下行资源上发送链路失败响应信息。而图1所示的通信系统，网络设备110接收到第i个小区的标识信息和候选的参考信号信息(如第三参考信号信息和/第四参考信号信息)时，可由网络设备110利用该候选的参考信号信息在该第i个小区的下行资源上发送链路失败响应信息。因此，以下结合图1所示的通信系统所阐述的内容中，除了两种通信系统中，发送链路失败响应信息的执行主体可能不同外，其他内容，比如可选的实施方式，也适用于图2所示的通信系统。
请参阅图3，图3是本申请实施例提供的一种链路失败恢复方法的流程示意图。基于图1所示的通信系统，终端设备确定第i个小区发生了链路失败时，可以执行以下步骤，恢复第i个小区的链路。
101、终端设备120根据空间相关参数的信息，在第一上行资源上发送第一指示信息；
其中，所述空间相关参数的信息为用于发送或接收第一小区的信道和/或信号的空间相关参数的信息；所述第一指示信息用于指示N个第二小区中的第i个小区的链路失败；所述第一上行资源为所述第一小区的上行资源。
102、网络设备110根据空间相关参数的信息，在第一上行资源上接收第一指示信息，并根据所述第一指示信息发送链路失败响应信息。
其中，该链路失败响应信息用于通知终端设备，网络设备已获知存在链路失败的小区的标识信息以及候选的参考信号的信息。
可见，该实施方式中，网络设备不需要配置第二小区的多个参考信号资源关联的用于指示第二小区的链路失败的多个上行资源，终端设备可利用第一小区的空间相关参数的信息以及第一小区的上行资源即可通知网络设备发生了链路失败，使得网络设备能够返回链路失败响应信息，从而降低了资源开销。
其中，图3所示的实施方式中，第一指示信息还需要指示第i个小区的标识信息、第三参考信号信息和第四参考信号信息中的至少一个。从而，使得网络设备可以根据该第一指示信息发送链路失败响应信息。本申请实施例中，第三参考信号信息为候选参考信号资源集合中信道质量大于或等于第一门限的参考信号的信息，所述第四参考信号信息为候选参考信号资源集合中信道质量小于或等于第二门限的参考信号的信息。其中，该参考信号资源集合为第i个小区对应的参考信号资源集合。可选地，该第三参考信号信息对应的第 三参考信号和该第四参考信号信息对应的第四参考信号为该第i个小区上的参考信号。
可选地，该第三参考信号为在下行链路(该终端设备和该网络设备之间的链路)上新识别的下行参考信号，该第三参考信号信息包括该第三参考信号的资源索引和/或该第三参考信号的质量信息。
还应理解，该第三参考信号可以用于网络设备恢复下行链路(网络设备与该终端设备之间的链路)。
还应理解，该下行链路还可以理解为该终端设备与该第二网络设备在该第i个小区的链路。
可选地，该第四参考信号为检测下行链路(该终端设备和网络设备之间的链路)失败的参考信号，或者该第四参考信号为对应于该第一下行资源关联的空间相关参数或者该空间相关参数中包含的参考信号，该第四参考信号信息包括该第四参考信号的资源索引和/或该第四参考信号的质量信息。
应理解，该第四参考信号可以为波束失败检测参考信号集合beam failure detection RS set中的一个或多个参考信号。
还应理解，可选地，该第三参考信号和该第四参考信号为该第二小区的参考信号。
还应理解，该第三参考信号和该第四参考信号可以为下行参考信号。
例如，该第三参考信号和该第四参考信号为CSI RS，SSB，DMRS或者TRS等。
在一种可选的实施例中，链路失败恢复过程中，终端设备会维护一个波束失败恢复的计时器或计数器以便于及时停止链路失败恢复过程。其中，波束失败恢复的计时器用于控制链路失败恢复的时间，波束失败恢复的计数器用于控制链路失败恢复的请求次数。也就是说，终端设备根据空间相关参数的信息，在第一上行资源上发送第一指示信息后，网络设备有可能接收不到该第一指示信息，或者，无法发送链路失败恢复响应消息，此时，终端设备在上述计时器设定的时长内继续等待，和/或在上述计数器设定的次数内，多次发送第一指示信息，即多次执行步骤101。因此，本申请实施例还提供的一种链路失败恢复方法，可以不包括步骤102-103。
请参阅图4，图4是本申请实施例提供的另一种链路失败恢复方法的流程示意图，与图3所示的链路失败恢复方法相比，图4所示的链路失败恢复方法中，终端设备可以利用网络设备配置的专用的物理上行共享信道PUSCH资源来发送第i个小区的标识信息、第三参考信号信息和第四参考信号信息中的至少一个。相比于图3所示的链路失败恢复方法，图4所示的链路失败恢复方法可以减小第一指示信息的负载，特别是，链路失败是突发事件，需要周期性的预留资源，以随时发送第一指示信息，告知网络设备发生了链路失败，该实施方式不需要周期性的预留PUCCH资源，从而能够节省上行资源。
具体的，如图4所示，该链路失败恢复方法可以包括以下步骤：
201、终端设备120根据空间相关参数的信息，在第一上行资源上发送第一指示信息；
其中，所述空间相关参数的信息为用于发送或接收第一小区的信道和/或信号的空间相关参数的信息；所述第一指示信息用于指示N个第二小区中的第i个小区的链路失败；所述第一上行资源为所述第一小区的上行资源。
202、网络设备110接收第一指示信息，并发送第一信令，所述第一信令用于指示第三上行资源；
可选地，第三上行资源是第一小区的上行资源；可选地，第三上行资源还可以是其他没有发生下行链路失败的小区或者没有发生上行链路失败的小区。
在一种可选的实施方式中，所述第一信令为媒体接入控制层控制元素MAC-CE信令或下行控制信息(Downlink control information,DCI)信令。
在另一种可选的实施方式中，所述媒体接入控制层控制元素(Media Access Control control element,MAC-CE)信令或所述DCI信令为专用于指示所述第三上行资源的信令。
其中，该DCI信令的循环冗余校验(Cyclic Redundancy Check,CRC)可由专用的无线网络临时标识加扰，或者，该DCI信令中携带专用指示，用于通知终端设备该DCI调度的PUSCH资源为用于发送链路失败恢复请求信息的资源。比如，该专用的无线网络临时标识为除小区系统信息无线网络临时标识(system information Network Temporary Identifier，SI-RNTI)、随机接入无线网络临时标识(random access Radio Network Temporary Identifier，RA-RNTI)、小区临时无线网络临时标识(temporary cell Radio Network Temporary Identifier，TC-RANTI)、小区无线网络临时标识(cell Radio Network Temporary Identifier，C-RNTI)，寻呼临时无线网络临时标识(Paging Radio Network Temporary Identifier，P-RNTI)、中断无线网络临时标识(interruption Radio Network Temporary Identifier，INT-RNTI)、时隙格式指示无线网络临时标识(slot format indication Radio Network Temporary Identifier，SFI-RNTI)、上行共享功控无线网络临时标识(transmit power control physical uplink shared channel Radio Network Temporary Identifier，TPC-PUSCH-RNTI)、上行控制功控无线网络临时标识(transmit power control physical uplink control channel Radio Network Temporary Identifier，TPC-PUCCH-RNTI)探测参考信号功控无线网络临时标识(transmit power control sounding reference symbols Radio Network Temporary Identifier，TPC-SRS-RNTI)、配置调度无线网络临时标识(configured scheduling Radio Network Temporary Identifier，CS-RNTI)和半静态信道状态信息无线网络临时标识(semi-persistent channel state information Radio Network Temporary Identifier，SP-CSI-RNTI)以外的无线网络临时标识加扰，如波束失败恢复无线网络临时标识(Beam failure recovery Radio Network Temporary Identifier，BFR-RNTI)。这样，终端设备根据该DCI信令就知道网络设备收到了波束失败请求，且网络设备通过第一信令分配的PUSCH资源，是用于波束失败恢复的相关信息的上报的。再比如，该专用指示可以由DCI中的其他状态位，来使得总段设备区分收到的PUSCH资源是用于波束失败恢复的相关信息的上报，还是用于正常的数据上报。
203、终端设备120接收第一信令，并在所述第三上行资源上发送第二指示信息；
其中，所述第二指示信息用于指示所述第i个小区的标识信息、第三参考信号信息和第四参考信号信息中的至少一个；
204、网络设备110在所述第三上行资源上接收第二指示信息，并根据所述第二指示信息发送链路失败响应信息。
同样，所述第三参考信号信息为所述第i个小区的候选参考信号资源集合中信道质量大于或等于第一门限的参考信号的信息，所述第四参考信号信息为所述第i个小区的候选 参考信号资源集合中信道质量小于或等于第二门限的参考信号的信息。
可见，该实施方式中，终端设备先发送第一指示信息，告知网络设备发生了链路失败，再由网络设备通过第一信令为终端设备配置第三上行资源，从而终端设备可以利用该第三上行资源将第i个小区的标识信息、第三参考信号信息、第四参考信号信息中的至少一个上报给网络设备，以便于网络设备恢复第i个小区的链路。可见，该实施方式也不需要网络设备为第i个小区的候选参考信号资源集合中的每个下行参考信号配置上行资源，来实现链路恢复，而是配置一个第三上行资源即可，从而能够大大降低资源开销。也可以说，该实施方式不需要周期性的配置大容量的资源来随时等待终端上报链路失败的相关信息，而是可以由终端设备先将小区存在链路失败的信息上报之后，再指示非周期信令分配大容量的资源，以上报链路失败的相关信息。
其中，本申请除了图3、图4所示的实施例外，还可以包括其他实施例，比如，终端设备执行链路失败恢复方法时，可能发送了第一指示信息后，可能由于网络状况整体比较恶劣，故终端设备无法收到网络设备的响应信息，即使该种情况下，该链路失败恢复方法也比现有技术中，需要为小区的每个下行参考信号配置上行资源的方式相比，能够大大的降低上行资源开销。总之，本申请实施例不做限定。
本申请实施例中，发送第一指示信息所采用的空间相关参数的信息可以包括多种实施方式，发送第一指示信息所采用的第一上行资源也可以包括多种实施方式，第一信令也包括多种实施方式，第一指示信息和/或第二指示信息的负载的大小也包括多种实施方式，等等，以下进行相关阐述。
本申请实施例还涉及一部分内容，即发送第一指示信息采用的空间相关参数的信息，可以包括多种实施方式，以下进行阐述。
在一种可选的实施方式中，所述空间相关参数的信息为用于接收第一小区的物理下行控制信道(Physical Downlink Control Channel,PDCCH)的准共址QCL假设信息。
也就是说，发送第一指示信息的发送波束可以采用接收第一小区的PDCCH的接收波束对应的发送波束。一般情况下，该方法适用于有互易性的场景，例如，形成接收波束的滤波器与形成发送波束的滤波器相同。该实施方式中，根据用于接收第一小区的PDCCH的QCL假设信息在第一上行资源上发送第一指示信息，避免如现有技术采用候选参考信号集合中的一个下行参考信号关联的QCL假设信息，所导致的需要为每个下行参考信号配置关联的上行资源，来发送链路失败，从而节省了资源开销。
在一种示例中，终端设备可以在CORESET ID1、CORESET ID 2，CORESET ID3等资源关联的搜索空间集合内检测PDCCH，不同时频资源上可以检测相同的或者不同的PDCCH，因此，该示例可以采用上述控制资源集合中索引值或标识最小的控制资源集合的QCL假设信息，来发送第一指示信息。
在一种示例中，QCL信息是以CORESET为单元配置的，而不是以PDCCH,search space set来配置或激活的。所以，PDCCH是在哪个CORESET上检测的，那就使用对应CORESET的QCL信息接收PDCCH，相应的，该QCL信息还用于发送第一指示信息。
在另一种示例中，该PDCCH可以为公共搜索空间集合及其关联的CORESET共同确定的时频资源上检测的PDCCH。即用于发送第一指示信息的QCL假设信息可以为所述第一小区的公共搜索空间集合CSS的QCL假设信息，该CSS的QCL假设信息关联的发射波束的覆盖好，采用该发射波束来发送第一指示信息，能够增加网络设备接收到该第一指示信息的概率。或者，用于发送第一指示信息的QCL假设信息可以为所述第一小区的公共搜索空间CSS所在的控制资源集合的QCL假设信息。
在另一种可选的实施方式中，发送第一指示信息的空间相关参数的信息为用于发送第一小区的物理上行控制信道(Physical Uplink Control Channel，PUCCH)的空间相关信息。一般情况，当上下行没有互易性时，可以采用该实施方式来发送第一指示信息。
在一种示例中，该PUCCH的空间相关信息可以为第一小区的一个或多个PUCCH中索引值或标识最小的PUCCH的空间相关信息。
在另一种示例中，该PUCCH的空间相关信息可以为用于发送对第i个小区的调度请求信息的PUCCH的空间相关信息；也就是说，终端设备确定第i个小区发生了链路失败时，可以采用用于发送该第i个小区的调度请求信息的PUCCH的空间相关信息，来发送第一指示信息。
在又一种可选的实施方式中，发送第一指示信息的空间相关参数的信息为第一小区的同步信号广播信道块(synchronous signal/physical broadcast channel block，SSB)资源的空间相关参数的信息，即采用在SSB资源接收SSB所采用的接收波束对应的发送波束，来发送第一指示信息。可选地，该SSB资源为终端设备初始接入该第一小区时的SSB资源。一般情况下，该方法适用于有互易性的场景，例如，形成接收波束的滤波器与形成发送波束的滤波器相同。
在又一种可选的实施方式中，发送第一指示信息的空间相关参数的信息为用于承载第一小区的链路失败恢复请求信息的信道的空间相关信息。
其中，发送第一指示信息的空间相关参数的信息为用于承载第一小区的链路失败恢复请求信息的信道的空间相关信息的实施方式中，第一小区发生链路失败时，可以包括以下情况：
情况一、终端设备先确定第一小区发生了链路失败，再确定N个第二小区中的第i个小区发生了链路失败；
针对这种情况，还包括以下几个时间点：
时间点1：终端设备在接收到第一小区的链路失败恢复响应信息之前，确定第i个小区发生了链路失败；
时间点2：终端设备在接收到第一小区的链路失败恢复响应信息之后，确定第i个小区发生了链路失败；
时间点3：终端设备在接收到第一小区的重配信令之后，确定第i个小区发生了链路失败。
实施方式一
终端设备确定第一小区发生了链路失败时，会根据第一小区对应的候选参考信号资源集合中的参考信号的信道质量，确定大于预设门限的参考信号，利用该参考信号关联的空 间相关信息，在该参考信号关联的PRACH资源上发送第一小区的链路失败恢复请求信息。
此时，终端设备在发送了第一小区的链路失败恢复请求信息之后，可以使用承载第一小区的链路失败恢复请求信息的信道的空间相关信息来发送第一指示信息。
该实施方式一可以适应于时间点1和时间点2的场景，即在终端设备确定了用于发送第一小区的链路失败恢复请求信息后，就可以发送该第一指示信息。
实施方式二
终端设备可以在接收到第一小区的链路失败恢复响应信息之后，再发送第一指示信息。其中，终端设备可以使用承载该第一小区的链路失败恢复响应信息的信道的空间相关信息，来发送第一指示信息。
由于终端设备确定第一小区发生了链路失败时，在用于链路失败恢复的计时器和/计数器的时间和/或次数内，可以采用多个下行参考信号关联的空间相关信息来发送第一小区的链路失败恢复请求信息，而能够接收到第一小区的链路失败恢复响应信息的接收波束或者空间相关参数的信息可能更好，故利用承载第一小区的链路失败恢复响应信息的空间相关信息来发送第一指示信息，可以提高网络设备接收到该第一指示信息的概率。
因此，该实施方式二可以适应于时间点1和时间2，即终端设备会在接收到第一小区的链路失败恢复响应信息后，再发送第一指示信息。
实施方式三
终端设备可以在接收到第一小区的控制信道的重配信息后，使用该重配信息确定第一小区的链路恢复成功后，再发送第一指示信息。此时，终端设备可以利用该重配信息来发送第一指示信息，也就是说，第一小区已重建链路，可利用第一小区激活的QCL假设信息或空间相关信息来发送第一指示信息，如上述空间相关参数的信息的各种实施方式，比如用于接收第一小区的PDCCH的QCL信息，或者，用于发送第一小区的PUCCH的空间相关信息，等等。
可见，终端设备利用该重配信息来发送第一指示信息，相比上述实施方式，能够大大的增加网络设备接收到第一指示信息的概率。因此，该实施方式三适应于时间点1-3时，需要等到第一小区完全恢复成功后，再恢复第i个小区的链路，即再发送第一指示信息。
实施方式四
终端设备恢复第一小区的链路和恢复第二小区的链路的时间点可以不相关，比如，终端设备确定了第一小区发送链路失败时，就针对第一小区执行链路失败恢复的相关操作，终端设备确定第i个小区发生了链路失败时，也针对第二小区执行链路失败恢复的相关操作。
其中，终端设备针对第i个小区发送第一指示信息所采用的空间相关参数的信息可以为上述用于承载第一小区的链路失败恢复请求信息的信道的空间相关信息。
该实施方式就不需要考虑上述各时间点，故能够更加及时的告知网络设备小区发生了链路失败，以便于网络设备能够尽快返回相关的响应信息。
情况二、终端设备同时确定了第一小区和第i个小区发生了链路失败，此时，可以采用上述实施方式一至四中的任一种。
情况三、终端设备先确定了第i个小区发生了链路失败，然后确定了第一小区发生了 链路失败
比如，终端设备确定了第i个小区发生了链路失败后，采用第一小区激活的QCL假设信息或空间相关信息来发送第一指示信息，但还没收到网络设备针对该第i个小区返回的响应信息时，第一小区也发生了链路失败，此时，终端设备可以执行上述实施方式一至四任一项所述的方法，来发送第一指示信息。也可以结合上述空间相关参数的信息的各种实施方式，比如用于接收第一小区的PDCCH的QCL信息，或者，用于发送第一小区的PUCCH的空间相关信息，等等，来多次发送第一指示信息，直到接收到网络设备的响应信息。
可见，该部分内容中，阐述了发送第一指示信息所采用的空间相关参数的信息中的各种实施方式，以便于终端设备及时告知网络设备，小区发生了链路失败。
本申请实施例还涉及一部分内容，即发送第一指示信息所采用的第一上行资源，可以包括多种实施方式，以下进行详细阐述。
在一种可选的实施方式中，如图3所示的实施例中，第一指示信息包含所述第i个小区的标识信息、第三参考信号信息和第四参考信号信息中的至少一个，故该第一上行资源可以为在所述第一小区的上行资源上配置的专用于发送所述N个第二小区的链路失败恢复请求信息的物理上行控制信道PUCCH资源。
可选的，网络设备为N个第二小区配置的该PUCCH资源可以只有一个，这样所有的第二小区均采用该PUCCH资源来发送链路失败恢复请求信息，与现有技术中需要为每个小区配置每个下行参考信号关联的上行资源相比，能够大大的降低资源开销。例如，N个第二小区中哪个小区发生了链路失败，就可以利用该PUCCH资源来上报链路失败的相关信息。再例如，当N个第二小区中多个小区同时发生了链路失败，则可以先选择恢复一个小区的链路，再恢复另一个小区的链路。
可选的，网络设备为N个第二小区配置的该PUCCH资源可以为多个，但多个PUCCH资源所占的总资源小于现有技术中为每个小区配置每个下行参考信号关联的上行资源的总资源。比如，可以根据第二小区的个数为第二小区配置相应数量的PUCCH。再比如，根据网络的可靠性，来定时设定所配置的PUCCH的数量。
在另一种可选的实施方式中，如图4所示的实施例中，可由第二指示信息来指示所述第i个小区的标识信息、第三参考信号信息和第四参考信号信息中的至少一个，故第一指示信息的负载较小。
在一种示例中，第一上行资源可以为第一上行资源集合中的物理随机接入信道PRACH资源，所述第一上行资源集合为所述第一小区配置的用于发送所述第一小区的链路失败恢复请求信息的资源的集合。该示例可以使得快速的发送第一指示信息。
其中，第一小区也发生链路失败的情况，比如上文所述的情况一至三，该第一上行资源可以为第一上行资源集合中用于发送第一小区的链路失败恢复请求信息的PRACH资源。
在另一种示例中，第一小区没有发生链路失败，或者第一小区已接收到重配信息成功恢复了链路，则该第一上行资源可以为第一上行资源集合中第一参考信号关联的PRACH资源，所述第一参考信号为与所述第一小区激活的QCL信息或空间相关信息相关联的参考信号。该示例中，由于激活的QCL信息或空间相关信息相关联的参考信号的信道质量相对 较好，从而，可以增加第一指示信息发送成功的概率。
其中，第一参考信号可以为下行参考信号，如CSI-RS、SSB、TRS等；可选地，该参考信号可以为上行参考信号，如SRS。第二参考信号可以为下行参考信号，如CSI-RS、SSB、TRS等；可选地，该参考信号可以为上行参考信号，如SRS。
进一步的，在上述示例限定第一上行资源为第一小区激活的QCL信息或空间相关信息相关联的参考信号所关联的上行资源，则所述第一上行资源集合中第二参考信号关联的PRACH资源用于发送所述第一小区的链路失败恢复请求信息，所述第二参考信号为与所述第一小区非激活的QCL信息或空间相关信息相关联的参考信号。也就是说，可以预先协议约定或信令配置，用于发送N个第二小区的链路失败所采用的第一上行资源为第一上行资源集合中激活的QCL信息或空间相关信息相关联的参考信号所关联的PRACH资源；同时预先协议约定或信令配置，用于发送第一小区的链路失败所采用的上行资源为第一上行资源集合中非激活的QCL信息或空间相关信息相关联的参考信号所关联的PRACH资源。这样，网络设备在接收到激活的QCL信息或空间相关信息相关联的参考信号所关联的PRACH资源发送的链路失败时，可以确定是第二小区中的小区发生了链路失败；网络设备在接收到非激活的QCL信息或空间相关信息相关联的参考信号所关联的PRACH资源发送的链路失败时，可以确定是第一小区发生了链路失败。
其中，激活的QCL信息指的是用于接收第一小区的PDCCH的激活的QCL信息，激活的空间相关信息指的是用于发送第一小区的PUCCH的激活的空间相关信息。非激活的QCL信息指的是用于接收第一小区的PDCCH的非激活的QCL信息，非激活的空间相关信息指的是用于发送第一小区的PUCCH的非激活的空间相关信息。也就是说，激活的QCL信息为从多个候选的QCL信息中确定实际使用的QCL信息，非激活的QCL信息为预设时间段中没有被实际使用的QCL信息。相应的，激活的空间相关信息为从多个候选的QCL信息中确定实际使用的空间相关信息，非激活的空间相关信息为预设时间段中没有被实际使用的空间相关信息。
比如，第一上行资源集合包括16个PRACH资源，分别关联了16个下行参考信号(CSI-RS1～CSI-RS16)。网络设备配置用于接收第一小区的PDCCH的QCL信息中包括的参考信号为CSI-RS1。当终端设备确定第一小区发生波束失败时，终端设备会在CSI-RS2～CSI-RS16中寻找大于预设门限的下行参考信号，并在该下行参考信号对应的PRACH资源上发送对第一小区的波束失败恢复请求信息，此时网络设备就知道第一小区发生了波束失败，且知道终端设备推荐的新的下行波束为该PRACH资源关联的下行参考信号。当终端确定第i个小区发送波束失败时，终端设备会在第一小区的服务波束对应的PRACH资源上(也即CSI-RS1资源关联的PRACH资源上)发送对第i个小区的第一指示信息。
另外，该示例与图3所示的实施例相结合，网络设备可以根据第一指示信息确定N个第二小区中的小区发送了链路失败，使得第一信令能够触发N个第二小区的候选参考信号资源集合，而不必周期性的触发或发送N个第二小区的候选参考信号资源集合中的各参考信号，从而，能够节省资源开销。
而在另一种可选的实施方式中，网络设备可以在第一小区的上行资源中为N个第二小 区配置M个用于发送第二小区的链路失败恢复请求信息的PRACH资源，称为所述第二上行资源集合，N大于或等于所述M。该第二上行资源集合包括的PRACH资源与第一上行资源集合包括的PRACH资源的不同之处在于，第二上行资源集合包括的PRACH资源不与下行参考信号相关联，或者与下行参考信号关联但为无效的，即不同于现有技术中为每个小区的每个下行参考信号配置的上行资源，因此，该实施方式与现有技术相比，依旧能够降低资源开销。
并且，终端设备利用第二上行资源集合中的PRACH资源来发送第一指示信息，可以使得网络设备在该PRACH资源上接收到第一指示信息时，就能够获知是N个第二小区中的小区发生了链路失败。
比如，与图4所示的实施例相结合，第一信令还能够触发N个第二小区的候选参考信号资源集合中的各参考信号，避免网络设备周期性触发该候选参考信号资源集合，从而能够节省资源开销。
该实施方式中，N等于所述M时，所述第二上行资源集合的一个PRACH资源与所述N个第二小区中的一个第二小区一一对应；则终端设备发送第一指示信息所采用的第一上行资源为所述第二上行资源集合中所述第i个小区对应的PRACH资源。
另外，由于所述第二上行资源集合的一个PRACH资源与所述N个第二小区中的一个第二小区一一对应，故网络设备根据接收的第一指示信息所采用的PRACH资源，就能够获知相应的第二小区，故第一指示信息还用于指示所述第i个小区的标识信息。可见，该种情况下，图3所示的实施例中第二指示信息就不必指示第i个小区的标识信息。另外，该种情况下，网络设备可以触发该第i个小区的候选参考信号资源集合，而不需要触发所有第二小区的候选参考信号资源集合。
该实施方式中，N大于所述M时，所述第二上行资源集合中的一个PRACH资源与P个第二小区组中的一个第二小区组相对应，所述N个第二小区包括所述P个第二小区组，一个第二小区组包含一个或多个第二小区，所述P为大于等于1且小于所述N的整数。则第一上行资源为所述第二上行资源集合中所述第i个小区所属的第二小区组对应的PRACH资源。
若不同的第二小区组对应的PRACH资源不同，则终端设备发送第一指示信息时，可以采用第i个小区所属的第二小区组对应的PRACH资源，相应的，网络设备可以在接收到第一指示信息时，根据该PRACH资源获知对应的第二小区组，从而第一信令可以触发该第二小区组对应的候选参考信号资源集合，而不需要触发所有第二小区的候选参考信号资源集合，或者不必周期性的触发所有第二小区的候选参考信号资源集合，从而节省资源开销。
比如，P个第二小区组与M个PRACH资源一一对应，则第一指示信息还能够指示发生链路失败的第i个小区所在的第二小区组的标识信息。相应的，第一信令可以触发该第二小区组的候选参考信号资源集合。
再比如，M＝1时，即网络设备为N个第二小区配置一个PRACH资源，即第二上行资源集合中包含一个PRACH资源，此时终端设备利用该PRACH资源发送第一指示信息时，网络设备接收到该第一指示信息，能够获知是N个第二小区中的小区发生了链路失败。
本申请实施例还涉及一部分内容，即第一指示信息和/或所述第二指示信息的负载大小可以包括多种实施方式，以下进行详细阐述。
在一种可选的实施方式中，所述第一指示信息或所述第二指示信息用于指示所述第i个小区的标识信息，还用于指示所述第三参考信号信息和/或所述第四参考信号信息时，所述第i个小区的标识信息与所述第三参考信号信息和/或所述第四参考信号信息独立编码。
其中，独立编码是指标识信息与所述第三参考信号信息和/或所述第四参考信号信息是采用不同部分的比特位分开指示的，网络设备需要识别出标识信息，才能获知第三参考信号信息和/或所述第四参考信号信息的比特数，即才能识别出第三参考信号信息和/或所述第四参考信号信息。
本申请实施例中，所述第一指示信息的负载的大小和/或所述第二指示信息的负载的大小与所述第一上行资源相关，以下从不同的实施方式进行阐述。
在一种实施方式中，发送第一指示信息的第一上行资源为网络设备为N个第二小区配置的专用于发送链路失败恢复请求信息的PUCCH资源，则：
该第一指示信息需要指示第i个小区的标识信息，以及第三参考信号信息和/或第四参考信号信息。由于终端设备和网络设备均知道第二小区的数量，故该第i个小区的标识信息的比特数为固定值，比如
Figure PCTCN2019099468-appb-000004
而第三参考信号信息和/或第四参考信号信息的比特数与该标识信息标识的各小区的候选参考信号资源集合中下行参考信号的个数有关。
因此，第一指示信息的负载大小为固定值时，第三参考信号信息的比特数基于N个第二小区对应的多个候选参考信号资源集合中下行参考信号个数最多的候选参考信号资源集合来确定，第四参考信号信息的比特数基于N个第二小区对应的多个波束失败检测参考信号资源集合中的下行参考信号个数最多的失败检测参考信号资源集合来确定。假设下行参考信号个数最多的候选参考信号资源集合包含Y个，可选地，第一指示信息的负载可根据
Figure PCTCN2019099468-appb-000005
来确定。
第一指示信息的负载大小为非固定值时，第三参考信号信息的比特数随着标识信息所指示的小区的候选参考信号资源集合中下行参考信号个数的变化而变化。，第四参考信号信息的比特数基于标识信息所指示的小区的波束失败检测参考信号资源集合中下行参考信号个数的变化而变化。
在另一种可选的实施方式中，第一上行资源为第一上行资源集合中的PRACH资源的情况，或者当第一上行资源为第一上行资源集合中的激活的QCL假设信息或空间相关信息关联的下行参考信号关联的PRACH资源的情况，第一指示信息无法告知网络设备发生链路失败的小区的标识信息。
因此，第二指示信息中标识信息的比特数与终端设备连接的小区的总数有关；若第二指示信息的负载的大小为固定值，则第二指示信息中第三参考信号信息的比特数是根据终端设备所有小区的候选参考信号资源集合中下行参考信号个数最多的候选参考信号资源集合相关，第四参考信号信息的比特数是根据终端设备所有小区的波束失败检测参考信号资源集合中下行参考信号个数最多的波束失败检测参考信号资源集合相关；若第二指示信息的负载的大小为非固定值，则第二指示信息中第三参考信号信息的比特数是根据标识信息 所指示的小区的候选参考信号资源集合中下行参考信号个数的变化而变化，第四参考信号信息的比特数是根据标识信息所指示的小区的波束失败检测参考信号资源集合中下行参考信号个数的变化而变化。
在又一种可选的实施方式中，当第一上行资源为第一上行资源集合中的激活的QCL或空间相关信息关联的下行参考信号关联的PRACH资源，且用于发送所述第一小区的链路失败恢复请求信息的上行资源为第一上行资源集合中非激活的QCL信息或空间相关信息关联的参考信号所关联的PRACH资源的情况；或者第一上行资源为第二上行资源集合中的PRACH资源的情况，由于第一指示信息能够指示是N个第二小区中的小区发生了链路失败，此时，第二指示信息中标识信息的比特数与N相关，比如为
Figure PCTCN2019099468-appb-000006
相应的，若第二指示信息的负载的大小为固定值，则第二指示信息中第三参考信号信息的比特数是根据N个第二小区中每个小区的候选参考信号资源集合中下行参考信号个数最多的候选参考信号资源集合相关，第四参考信号信息的比特数是根据N个第二小区中每个小区的波束失败检测参考信号资源集合中下行参考信号个数最多的波束失败检测参考信号资源集合相关；若第二指示信息的负载的大小为非固定值，则第二指示信息中第三参考信号信息的比特数是根据标识信息所指示的第二小区的候选参考信号资源集合中下行参考信号个数的变化而变化，第四参考信号信息的比特数是根据标识信息所指示的第二小区的波束失败检测参考信号资源集合中下行参考信号个数的变化而变化。
在又一种可选的实施方式中，当N等于所述M时，第一上行资源为所述第二上行资源集合中所述第i个小区对应的PRACH资源，即第一指示信息还用于指示所述第i个小区的标识信息，第二指示信息就不必包含第i个小区的标识信息，只需包含第三参考信号信息和/或第四参考信号信息。其中，第一指示信息还用于指示所述第i个小区的标识信息，也就是说，该实施方式中，由于第二上行资源集合中PRACH资源与每个第二小区之间的关联关系，使得网络设备可以根据接收该第一指示信息的PRACH资源来确定小区的标识信息，而不是第一指示信息包含小区的标识信息。
因此，若第二指示信息的负载大小为固定值，则第三参考信号信息的比特数与N个第二小区中每个小区的候选参考信号资源集合中下行参考信号个数最多的候选参考信号资源集合相关，第四参考信号信息的比特数与N个第二小区中每个小区的波束失败检测参考信号资源集合中下行参考信号个数最多的波束失败检测参考信号资源集合相关；若该第二指示信息的负载大小为非固定值，则第三参考信号信息的比特数与第i个小区的候选参考信号资源集合中下行参考信号的个数相关，第四参考信号信息的比特数与第i个小区的波束失败检测参考信号资源集合中下行参考信号的个数相关。
在又一种可选的实施方式中，当第一上行资源为第二上行资源集合中所述第i个小区所属第二小区组对应的PRACH资源的情况，即第一指示信息还用于指示所述第i个小区所属第二小区组的标识信息，第二指示信息中标识信息可以为第i个小区在该第二小区组的组内标识信息。当第二指示信息的负载的大小为固定值时，该标识信息的比特数根据P个第二小区组中包含第二小区的个数最多的第二小区组来确定，第三参考信号信息的比特数与该第i个小区所属第二小区组对应的多个候选参考信号资源集合中下行参考信号个数最多的候选参考信号资源集合相关，第四参考信号信息的比特数与该第i个小区所属第二小 区组对应的多个波束失败检测参考信号资源集合中下行参考信号个数最多的波束失败检测参考信号资源集合相关。当第二指示信息的负载的大小为非固定值时，该标识信息的比特数根据所述第i个小区所属第二小区组包含的第二小区的个数来确定，第三参考信号信息的比特数与该第i个小区的候选参考信号资源集合中下行参考信号个数相关，即与标识信息指示的小区的候选参考信号资源集合中下行参考信号个数相关；第四参考信号信息的比特数与该第i个小区的波束失败检测参考信号资源集合中下行参考信号个数相关，即与标识信息指示的小区的波束失败检测参考信号资源集合中下行参考信号个数相关。
请参阅图8，图8是本申请实施例提供的一种终端设备的结构示意图，如图8所示，该终端设备可以包括发送单元310、接收单元320，其中：
发送单元310，用于根据空间相关参数的信息，在第一上行资源上发送第一指示信息；
其中，所述空间相关参数的信息为用于发送或接收第一小区的信道和/或信号的空间相关参数的信息；所述第一指示信息用于指示N个第二小区中的第i个小区的链路失败，所述N为大于或等于1的整数，所述i为大于或等于1且小于或等于所述N的整数；所述第一上行资源为所述第一小区的上行资源。
在另一种可选的实施方式中，该终端设备中：
接收单元，用于接收第一信令，所述第一信令用于指示第三上行资源；
所述发送单元，还用于在所述第三上行资源上发送第二指示信息，所述第二指示信息用于指示所述第i个小区的标识信息、第三参考信号信息和第四参考信号信息中的至少一个；
其中，所述第三参考信号信息为信道质量大于或等于第一门限的参考信号的信息，所述第四参考信号信息为信道质量小于或等于第二门限的参考信号的信息。
其中，图8所示的终端设备中发送单元和/或接收单元执行上述步骤之外，还可以结合上述方法实施例中各种实施方式中的至少一种执行本申请实施例所述的链路失败恢复方法中终端设备的相关操作，此处不再详述。
请参阅图9，图9是本申请实施例提供的一种网络设备的结构示意图，如图9所示，该网络设备可以包括接收单元410和发送单元420，其中：
接收单元，用于根据空间相关参数的信息，在第一上行资源上接收第一指示信息；
发送单元，用于根据所述第一指示信息发送链路失败响应信息；
其中，所述空间相关参数的信息为用于发送或接收第一小区的信道和/或信号的空间相关参数的信息；所述第一指示信息用于指示N个第二小区中的第i个小区的链路失败，所述N为大于或等于1的整数，所述i为大于或等于1且小于或等于所述N的整数；所述第一上行资源为所述第一小区的上行资源。
在一种可选的实施方式中，所述发送单元410，还用于发送第一信令，所述第一信令用于指示第三上行资源；所述接收单元，还用于在所述第三上行资源上接收第二指示信息，所述第二指示信息用于指示所述第i个小区的标识信息、第三参考信号信息和第四参考信号信息中的至少一个；其中，所述第三参考信号信息为信道质量大于或等于第一门限的参 考信号的信息，所述第四参考信号信息为信道质量小于或等于第二门限的参考信号的信息；
所述发送单元420根据所述第一指示信息发送链路失败响应信息，具体为：根据所述第一指示信息和第二指示信息发送链路失败响应信息。
同样的，图9所示的网络设备中发送单元和接收单元执行上述步骤之外，还可以结合上述方法实施例中各种实施方式中的至少一种执行本申请实施例所述的链路失败恢复方法中网络设备的相关操作，此处不再详述。
根据前述方法，图10为本申请实施例提供的一种设备的结构示意图，如图10所示，该设备可以为图8所示的终端设备；也可以为芯片或电路，比如可设置于终端设备的芯片或电路。该设备可以对应上述方法中的终端设备的相关操作。
该设备可以包括处理器510和存储器520。该存储器520用于存储指令，该处理器510用于执行该存储器520存储的指令，以实现如上述终端设备所执行的步骤，或者实现上述图8所示的终端设备中各单元的相关操作。
进一步的，该设备还可以包括接收器540和发送器550。进一步的，该设备还可以进一步包括总线系统530，其中，处理器510、存储器520、接收器540和发送器550可以通过总线系统530相连。
处理器510用于执行该存储器520存储的指令，以控制接收器540接收信号，并控制发送器550发送信号，完成上述方法中终端设备的步骤，比如接收通信设备配置的一个或多个数据信道配置信息，或者发送加扰后的数据等。其中，接收器540和发送器550可以为相同或者不同的物理实体。为相同的物理实体时，可以统称为收发器。所述存储器520可以集成在所述处理器510中，也可以与所述处理器510分开设置。
另外，存储器520还用于网络设备为终端设备配置的第一上行资源集合和/或第二上行资源集合，等等。
作为一种实现方式，接收器540和发送器550的功能可以考虑通过收发电路或者收发的专用芯片实现。处理器510可以考虑通过专用处理芯片、处理电路、处理器或者通用芯片实现。
作为另一种实现方式，可以考虑使用通用计算机的方式来实现本申请实施例提供的终端设备。即将实现处理器510，接收器540和发送器550功能的程序代码存储在存储器中，通用处理器通过执行存储器中的代码来实现处理器510，接收器540和发送器550的功能，比如，处理器510调用存储器520中的程序代码，执行以下操作：
根据空间相关参数的信息，在第一上行资源上发送第一指示信息；
其中，所述空间相关参数的信息为用于发送或接收第一小区的信道和/或信号的空间相关参数的信息；所述第一指示信息用于指示N个第二小区中的第i个小区的链路失败，所述N为大于或等于1的整数，所述i为大于或等于1且小于或等于所述N的整数；所述第一上行资源为所述第一小区的上行资源。
在一种可选的实施方式中，处理器510调用存储器520中的程序代码，还可以执行以下操作：
接收第一信令，所述第一信令用于指示第三上行资源；
在所述第三上行资源上发送第二指示信息，所述第二指示信息用于指示所述第i个小区的标识信息、第三参考信号信息和第四参考信号信息中的至少一个；
其中，所述第三参考信号信息为信道质量大于或等于第一门限的参考信号的信息，所述第四参考信号信息为信道质量小于或等于第二门限的参考信号的信息。
在一种可选的实施方式中，处理器510调用存储器520中的程序代码，还可以执行上述方法实施例中终端设备执行的其他操作，也就是说，该设备所涉及的与本申请实施例提供的技术方案相关的概念，解释和详细说明及其他步骤请参见前述方法或其他实施例中关于这些内容的描述，此处不做赘述。
请参阅图11，图11是本申请实施例提供的一种终端设备的结构示意图。该终端设备可适用于图1所示出的系统中。为了便于说明，图11仅示出了终端设备的主要部件。如图11所示，终端设备11包括处理器、存储器、控制电路、天线以及输入输出装置。处理器主要用于对通信协议以及通信数据进行处理，以及对整个终端设备进行控制，执行软件程序，处理软件程序的数据，例如用于支持终端设备执行上述数据加扰方法实施例中所描述的动作。存储器主要用于存储软件程序和数据，例如存储上述实施例中所描述第一上行资源集合和/或第二上行资源集合，等等。控制电路主要用于基带信号与射频信号的转换以及对射频信号的处理。控制电路和天线一起也可以叫做收发器，主要用于收发电磁波形式的射频信号，比如接收通信设备配置的相关信息、接收网络设备发送的数据、发送上行数据，等等。输入输出装置，例如触摸屏、显示屏，键盘等主要用于接收用户输入的数据以及对用户输出数据。
当终端设备开机后，处理器可以读取存储单元中的软件程序，解释并执行软件程序的指令，处理软件程序的数据，比如执行上述方法实施例中终端设备的相关操作。在执行上述方法实施例中终端设备的相关操作过程中，当需要通过无线发送数据时，处理器对待发送的数据进行基带处理后，输出基带信号至射频电路，射频电路将基带信号进行射频处理后将射频信号通过天线以电磁波的形式向外发送。当有数据发送到终端设备时，射频电路通过天线接收到射频信号，将射频信号转换为基带信号，并将基带信号输出至处理器，处理器将基带信号转换为数据并对该数据进行处理。
本领域技术人员可以理解，为了便于说明，图11仅示出了一个存储器和处理器。在实际的终端设备中，可以存在多个处理器和存储器。存储器也可以称为存储介质或者存储设备等，本发明实施例对此不做限制。
作为一种可选的实现方式，处理器可以包括基带处理器和中央处理器，基带处理器主要用于对通信协议以及通信数据进行处理，中央处理器主要用于对整个终端设备进行控制，执行软件程序，处理软件程序的数据。图11中的处理器集成了基带处理器和中央处理器的功能，本领域技术人员可以理解，基带处理器和中央处理器也可以是各自独立的处理器，通过总线等技术互联。本领域技术人员可以理解，终端设备可以包括多个基带处理器以适应不同的网络制式，终端设备可以包括多个中央处理器以增强其处理能力，终端设备的各个部件可以通过各种总线连接。所述基带处理器也可以表述为基带处理电路或者基带处理芯片。所述中央处理器也可以表述为中央处理电路或者中央处理芯片。对通信协议以及通 信数据进行处理的功能可以内置在处理器中，也可以以软件程序的形式存储在存储单元中，由处理器执行软件程序以实现基带处理功能。
示例性的，在发明实施例中，可以将具有收发功能的天线和控制电路视为终端设备的通信单元或收发单元，将具有处理功能的处理器视为终端设备的确定单元或处理单元。如图11所示，终端设备包括收发单元101和处理单元102。收发单元也可以称为收发器、收发机、收发装置等。可选的，可以将收发单元101中用于实现接收功能的器件视为接收单元，将收发单元101中用于实现发送功能的器件视为发送单元，即收发单元101包括接收单元和发送单元示例性的，接收单元也可以称为接收机、接收器、接收电路等，发送单元可以称为发射机、发射器或者发射电路等。
根据前述方法，图12为本申请实施例提供的另一种设备的结构示意图，如图12所示，该设备可以为图9所示的网络设备；该设备也可以为芯片或电路，如可设置于图9所示的网络设备内的芯片或电路。该设备执行上述方法中的网络设备的相关操作。该设备可以包括处理器610和存储器620。该存储器620用于存储指令，该处理器610用于执行该存储器620存储的指令，以使所述设备实现前述网络设备的相关操作，比如加扰标识配置方法和/或数据加扰方法等。
进一步的，该网络还可以包括接收器640和发送器650。再进一步的，该网络还可以包括总线系统630。
其中，处理器610、存储器620、接收器640和发送器650通过总线系统630相连，处理器610用于执行该存储器620存储的指令，以控制接收器640接收信号，并控制发送器650发送信号，完成上述方法中网络设备的步骤。其中，接收器640和发送器650可以为相同或者不同的物理实体。为相同的物理实体时，可以统称为收发器。所述存储器620可以集成在所述处理器610中，也可以与所述处理器610分开设置。
作为一种实现方式，接收器640和发送器650的功能可以考虑通过收发电路或者收发的专用芯片实现。处理器610可以考虑通过专用处理芯片、处理电路、处理器或者通用芯片实现。
作为另一种实现方式，可以考虑使用通用计算机的方式来实现本申请实施例提供的通信设备或网络设备。即将实现处理器610，接收器640和发送器650功能的程序代码存储在存储器中，通用处理器通过执行存储器中的代码来实现处理器610，接收器640和发送器650的功能，比如，处理器610可以调用存储器620中的程序代码，或者基于接收器640和发送器650，执行图9所示的实施例中配置单元、发送单元等的相关操作，或者还可以执行图10所示的实施例中确定单元、处理单元的相关操作，或者执行上述方法实施例中各网络设备执行的相关操作或实施方式。
所述设备所涉及的与本申请实施例提供的技术方案相关的概念，解释和详细说明及其他步骤请参见前述方法或其他实施例中关于这些内容的描述，此处不做赘述。
请参阅图13，图13为本申请实施例提供的一种网络设备的结构示意图，该网络设备可以为基站，能够为终端设备发送相关的控制信息和配置信息，以及收发数据等操作，图 13以基站的结构为例进行阐述。如图13所示，该基站可应用于如图1所示的系统中。基站包括一个或多个射频单元，如远端射频单元(remote radio unit,RRU)201和一个或多个基带单元(baseband unit，BBU)(也可称为数字单元，digital unit，DU)202。所述RRU201可以称为收发单元、收发机、收发电路、或者收发器等等，其可以包括至少一个天线2011和射频单元2012。所述RRU201部分主要用于射频信号的收发以及射频信号与基带信号的转换，例如用于向终端设备发送上述实施例中所述的链路失败响应信息等。所述BBU202部分主要用于进行基带处理，对基站进行控制等。所述RRU201与BBU202可以是物理上设置在一起，也可以物理上分离设置的，即分布式基站。
所述BBU202为基站的控制中心，也可以称为处理单元，主要用于完成基带处理功能，如信道编码，复用，调制，扩频等等。例如所述BBU(处理单元)可以用于控制基站执行上述方法实施例中网络设备的操作流程。
在一个示例中，所述BBU202可以由一个或多个单板构成，多个单板可以共同支持单一接入制式的无线接入网(如LTE网)，也可以分别支持不同接入制式的无线接入网。所述BBU202还包括存储器2021和处理器2022。所述存储器2021用以存储必要的指令和数据。例如存储器2021存储上述实施例中的第一上行资源集合和/或第二上行资源集合等。所述处理器2022用于控制基站进行必要的动作，例如用于控制基站执行上述方法实施例中关于网络设备的操作流程。所述存储器2021和处理器2022可以服务于一个或多个单板。也就是说，可以每个单板上单独设置存储器和处理器。也可以是多个单板共用相同的存储器和处理器。此外每个单板上还可以设置有必要的电路。
根据本申请实施例提供的方法，本申请实施例还提供一种通信系统，其包括前述的一个或多个网络设备，和一个或多于一个终端设备。
应理解，在本申请实施例中，处理器可以是中央处理单元(Central Processing Unit，简称为“CPU”)，该处理器还可以是其他通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC)、现成可编程门阵列(FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
该存储器可以包括只读存储器和随机存取存储器，并向处理器提供指令和数据。存储器的一部分还可以包括非易失性随机存取存储器。
该总线系统除包括数据总线之外，还可以包括电源总线、控制总线和状态信号总线等。但是为了清楚说明起见，在图中将各种总线都标为总线系统。
在实现过程中，上述方法的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。结合本申请实施例所公开的方法的步骤可以直接体现为硬件处理器执行完成，或者用处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器，处理器读取存储器中的信息，结合其硬件完成上述方法的步骤。为避免重复，这里不再详细描述。
应理解，本文中术语“和/或”，仅仅是一种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这三种 情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。
应理解，在本申请的各种实施例中，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，而不应对本发明实施例的实施过程构成任何限定。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各种说明性逻辑块(illustrative logical block)和步骤(step)，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本发明的范围。
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，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、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系统，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或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。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，在本发明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。
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指令。在计算机上加载和执行所述计算机程序指令时，全部或部分地产生按照本发明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、或者其他可编程装置。所述计算机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(例如同轴电缆、光纤、数字用户线(DSL))或无线(例如红外、无线、微波等)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包含一个或多个可用介质集成的服务器、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)、光介质(例如，DVD)、或者半导体介质(例如固态硬盘Solid State Disk(SSD))等。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应以所述权利要求的保护范围为准。

Claims (114)

  1. 一种链路失败恢复方法，其特征在于，包括：
    终端设备根据空间相关参数的信息，在第一上行资源上发送第一指示信息；
    其中，所述空间相关参数的信息为用于发送或接收第一小区的信道和/或信号的空间相关参数的信息；所述第一指示信息用于指示N个第二小区中的第i个小区的链路失败，所述N为大于或等于1的整数，所述i为大于或等于1且小于或等于所述N的整数；所述第一上行资源为所述第一小区的上行资源。
  2. 根据权利要求1所述的方法，其特征在于，
    所述空间相关参数的信息为用于接收所述第一小区的物理下行控制信道PDCCH的准共址QCL假设信息；
    或者，所述空间相关参数的信息为用于发送所述第一小区的物理上行控制信道PUCCH的空间相关信息；
    或者，所述空间相关参数的信息为所述第一小区的同步信号广播信道块SSB资源的空间相关参数的信息，
    或者，所述空间相关参数的信息为用于承载所述第一小区的链路失败恢复请求信息的信道的空间相关信息。
  3. 根据权利要求2所述的方法，其特征在于，
    所述QCL假设信息为所述第一小区的控制资源集合中索引值或标识最小的控制资源集合的QCL假设信息，或者为所述第一小区的公共搜索空间集合CSS的QCL假设信息，或者为所述第一小区的公共搜索空间集合CSS所在的控制资源集合的QCL假设信息；
    或者，所述PUCCH的空间相关信息为所述第一小区的PUCCH中索引值或标识最小的PUCCH的空间相关信息，或者为用于发送对所述第i个小区的调度请求信息的PUCCH的空间相关信息。
  4. 根据权利要求1至3任一项所述的方法，其特征在于，所述第一上行资源为第一上行资源集合中的物理随机接入信道PRACH资源，所述第一上行资源集合为配置的用于发送所述第一小区的链路失败恢复请求信息的资源的集合。
  5. 根据权利要求1至3任一项所述的方法，其特征在于，所述第一上行资源为第一上行资源集合中第一参考信号关联的PRACH资源，所述第一参考信号为与所述第一小区激活的QCL假设信息或空间相关信息相关联的参考信号，所述第一上行资源集合为配置的用于发送所述第一小区的链路失败恢复请求信息的资源的集合。
  6. 根据权利要求5所述的方法，其特征在于，所述第一上行资源集合中第二参考信号关联的PRACH资源用于发送所述第一小区的链路失败恢复请求信息，所述第二参考信号为与所述第一小区非激活的QCL假设信息或空间相关信息相关联的参考信号。
  7. 根据权利要求1至3任一项所述的方法，其特征在于，所述第一上行资源为第二上行资源集合中的物理随机接入信道PRACH资源，所述第二上行资源集合为在所述第一小区的上行资源中为所述N个第二小区配置的M个用于发送链路失败恢复请求信息的PRACH资源的集合，所述M为大于或等于1，且小于或等于所述N的整数。
  8. 根据权利要求7所述的方法，其特征在于，当所述N等于所述M时，所述第二上行资源集合的一个PRACH资源与所述N个第二小区中的一个第二小区一一对应；
    所述第一上行资源为所述第二上行资源集合中所述第i个小区对应的PRACH资源。
  9. 根据权利要求8所述的方法，其特征在于，所述第一指示信息还用于指示所述第i个小区的标识信息。
  10. 根据权利要求7所述的方法，其特征在于，当所述N大于所述M时，所述第二上行资源集合中的一个PRACH资源与P个第二小区组中的一个第二小区组相对应，所述N个第二小区包括所述P个第二小区组，一个第二小区组包含一个或多个第二小区，所述P为大于等于1且小于所述N的整数；
    所述第一上行资源为所述第二上行资源集合中所述第i个小区所属的第二小区组对应的PRACH资源。
  11. 根据权利要求10所述的方法，其特征在于，所述第一指示信息还用于指示所述第i个小区所属的第二小区组的标识信息。
  12. 根据权利要求1至3任一项所述的方法，其特征在于，所述第一上行资源为在所述第一小区的上行资源上配置的专用于发送所述N个第二小区的链路失败恢复请求信息的物理上行控制信道PUCCH资源。
  13. 根据权利要求12所述的方法，其特征在于，所述第一指示信息包含所述第i个小区的标识信息、第三参考信号信息和第四参考信号信息中的至少一个；
    其中，所述第三参考信号信息为信道质量大于或等于第一门限的参考信号的信息，所述第四参考信号信息为信道质量小于或等于第二门限的参考信号的信息。
  14. 根据权利要求1至11任一项所述的方法，其特征在于，所述方法还包括：
    所述终端设备接收第一信令，所述第一信令用于指示第三上行资源；
    所述终端设备在所述第三上行资源上发送第二指示信息，所述第二指示信息用于指示所述第i个小区的标识信息、第三参考信号信息和第四参考信号信息中的至少一个；
    其中，所述第三参考信号信息为信道质量大于或等于第一门限的参考信号的信息，所述第四参考信号信息为信道质量小于或等于第二门限的参考信号的信息。
  15. 根据权利要求14所述的方法，其特征在于，所述第一信令还用于触发所述N个第二小区、所述第i个小区或者所述第i个小区所在的第二小区组的候选参考信号资源集合。
  16. 根据权利要求14所述的方法，其特征在于，所述第三上行资源为物理上行共享信道PUSCH资源或PRACH资源。
  17. 根据权利要求13或14所述的方法，其特征在于，所述第一指示信息或所述第二指示信息用于指示所述第i个小区的标识信息，还用于指示所述第三参考信号信息和/或所述第四参考信号信息时，所述第i个小区的标识信息与所述第三参考信号信息和/或所述第四参考信号信息独立编码。
  18. 根据权利要求14所述的方法，其特征在于，所述第二指示信息的负载的大小与所述第一上行资源相关。
  19. 根据权利要求13或14所述的方法，其特征在于，所述第一指示信息的负载和/或所述第二指示信息的负载的大小为固定值；
    所述第一指示信息的负载和/或所述第二指示信息的负载的大小与所述N个第二小区对应的多个候选参考信号资源集合中下行参考信号个数最多的候选参考信号资源集合相关。
  20. 根据权利要求1至19任一项所述的方法，所述第一小区是用于发送对所述第i个小区调度请求信息的资源所在的小区。
  21. 一种链路失败恢复方法，其特征在于，包括：
    网络设备根据空间相关参数的信息，在第一上行资源上接收第一指示信息；
    所述网络设备根据所述第一指示信息发送链路失败响应信息；
    其中，所述空间相关参数的信息为用于发送或接收第一小区的信道和/或信号的空间相关参数的信息；所述第一指示信息用于指示N个第二小区中的第i个小区的链路失败，所述N为大于或等于1的整数，所述i为大于或等于1且小于或等于所述N的整数；所述第一上行资源为所述第一小区的上行资源。
  22. 根据权利要求21所述的方法，其特征在于，
    所述空间相关参数的信息为用于接收所述第一小区的物理下行控制信道PDCCH的准共址QCL假设信息；
    或者，所述空间相关参数的信息为用于发送所述第一小区的物理上行控制信道PUCCH的空间相关信息；
    或者，所述空间相关参数的信息为所述第一小区的同步信号广播信道块SSB资源，
    或者，所述空间相关参数的信息为用于承载所述第一小区的链路失败恢复请求信息的信道的空间相关信息。
  23. 根据权利要求22所述的方法，其特征在于，
    所述QCL假设信息为所述第一小区的控制资源集合中索引值或标识最小的控制资源集合的QCL假设信息，或者为所述第一小区的公共搜索空间集合CSS的QCL假设信息，或者为所述第一小区的公共搜索空间集合CSS所在的控制资源集合的QCL假设信息；
    或者，所述空间相关信息为所述第一小区的PUCCH中索引值或标识最小的PUCCH的空间相关信息，或者为用于发送对所述第i个小区的调度请求信息的PUCCH的空间相关信息。
  24. 根据权利要求21至23任一项所述的方法，其特征在于，所述方法还包括：
    所述网络设备发送第一信令，所述第一信令用于指示第三上行资源；
    所述网络设备在所述第三上行资源上接收第二指示信息，所述第二指示信息用于指示所述第i个小区的标识信息、第三参考信号信息和第四参考信号信息中的至少一个；
    其中，所述第三参考信号信息为信道质量大于或等于第一门限的参考信号的信息，所述第四参考信号信息为信道质量小于或等于第二门限的参考信号的信息；
    所述网络设备根据所述第一指示信息发送链路失败响应信息，包括：
    所述网络设备根据所述第一指示信息和第二指示信息发送链路失败响应信息。
  25. 根据权利要求24所述的方法，其特征在于，所述第一上行资源为第一上行资源集合中的物理随机接入信道PRACH资源，所述第一上行资源集合为配置的用于发送所述第 一小区的链路失败恢复请求信息的资源的集合。
  26. 根据权利要求24所述的方法，其特征在于，所述第一上行资源为第一上行资源集合中第一参考信号关联的PRACH资源，所述第一参考信号为与所述第一小区激活的QCL假设信息或空间相关信息相关联的参考信号，所述第一上行资源集合为配置的用于发送所述第一小区的链路失败恢复请求信息的资源的集合。
  27. 根据权利要求26所述的方法，其特征在于，所述第一上行资源集合中第二参考信号关联的PRACH资源用于发送所述第一小区的链路失败恢复请求信息，所述第二参考信号为与所述第一小区非激活的QCL假设信息或空间相关信息相关联的参考信号。
  28. 根据权利要求24所述的方法，其特征在于，所述第一上行资源为第二上行资源集合中的物理随机接入信道PRACH资源，所述第二上行资源集合为在所述第一小区的上行资源中为所述N个第二小区配置的M个用于发送链路失败恢复请求信息的PRACH资源的集合，所述M为大于或等于1，且小于或等于所述N的整数。
  29. 根据权利要求28所述的方法，其特征在于，当所述N等于所述M时，所述第二上行资源集合的一个PRACH资源与所述N个第二小区中的一个第二小区一一对应；
    所述第一上行资源为所述第二上行资源集合中所述第i个小区对应的PRACH资源。
  30. 根据权利要求29所述的方法，其特征在于，所述第一指示信息还用于指示所述第i个小区的标识信息。
  31. 根据权利要求28所述的方法，其特征在于，当所述N大于所述M时，所述第二上行资源集合中的一个PRACH资源与P个第二小区组中的一个第二小区组相对应，所述N个第二小区包括所述P个第二小区组，一个第二小区组包含一个或多个第二小区，所述P为大于等于1且小于所述N的正整数；
    所述第一上行资源为所述第二上行资源集合中所述第i个小区所属的第二小区组对应的PRACH资源。
  32. 根据权利要求31所述的方法，其特征在于，所述第一指示信息还用于指示所述第i个小区所属的第二小区组的标识信息。
  33. 根据权利要求21至23任一项所述的方法，其特征在于，所述第一上行资源为在所述第一小区的上行资源上配置的专用于发送所述N个第二小区的链路失败恢复请求信息的物理上行控制信道PUCCH资源。
  34. 根据权利要求33所述的方法，其特征在于，所述第一指示信息包含所述第i个小区的标识信息、第三参考信号信息和第四参考信号信息中的至少一个；
    其中，所述第三参考信号信息为信道质量大于或等于第一门限的参考信号的信息，所述第四参考信号信息为信道质量小于或等于第二门限的参考信号的信息。
  35. 根据权利要求24所述的方法，其特征在于，所述第一信令还用于触发所述N个第二小区、所述第i个小区或者所述第i个小区所在的第二小区组的候选参考信号资源集合。
  36. 根据权利要求24所述的方法，其特征在于，所述第二上行资源为物理上行共享信道PUSCH资源或PRACH资源。
  37. 根据权利要求24或34所述的方法，其特征在于，所述第一指示信息或所述第二指示信息用于指示所述第i个小区的标识信息，还用于指示所述第三参考信号信息和/或所 述第四参考信号信息时，所述第i个小区的标识信息与所述第三参考信号信息和/或所述第四参考信号信息独立编码。
  38. 根据权利要求24所述的方法，其特征在于，所述第二指示信息的负载的大小与所述第一上行资源相关。
  39. 根据权利要求24或34所述的方法，其特征在于，所述第一指示信息的负载和/或所述第二指示信息的负载的大小为固定值；
    所述第一指示信息的负载和/或所述第二指示信息的负载的大小与所述N个第二小区对应的多个候选参考信号资源集合中下行参考信号个数最多的候选参考信号资源集合相关。
  40. 根据权利要求21至39任一项所述的方法，所述第一小区是用于发送对所述第i个小区调度请求信息的资源所在的小区。
  41. 一种终端设备，其特征在于，包括：
    发送单元，用于根据空间相关参数的信息，在第一上行资源上发送第一指示信息；
    其中，所述空间相关参数的信息为用于发送或接收第一小区的信道和/或信号的空间相关参数的信息；所述第一指示信息用于指示N个第二小区中的第i个小区的链路失败，所述N为大于或等于1的整数，所述i为大于或等于1且小于或等于所述N的整数；所述第一上行资源为所述第一小区的上行资源。
  42. 根据权利要求41所述的终端设备，其特征在于，
    所述空间相关参数的信息为用于接收所述第一小区的物理下行控制信道PDCCH的准共址QCL假设信息；
    或者，所述空间相关参数的信息为用于发送所述第一小区的物理上行控制信道PUCCH的空间相关信息；
    或者，所述空间相关参数的信息为所述第一小区的同步信号广播信道块SSB资源的空间相关参数的信息，
    或者，所述空间相关参数的信息为用于承载所述第一小区的链路失败恢复请求信息的信道的空间相关信息。
  43. 根据权利要求42所述的终端设备，其特征在于，
    所述QCL假设信息为所述第一小区的控制资源集合中索引值或标识最小的控制资源集合的QCL假设信息，或者为所述第一小区的公共搜索空间集合CSS的QCL假设信息，或者为所述第一小区的公共搜索空间集合CSS所在的控制资源集合的QCL假设信息；
    或者，所述PUCCH的空间相关信息为所述第一小区的PUCCH中索引值或标识最小的PUCCH的空间相关信息，或者为用于发送对所述第i个小区的调度请求信息的PUCCH的空间相关信息。
  44. 根据权利要求41至43任一项所述的终端设备，其特征在于，所述第一上行资源为第一上行资源集合中的物理随机接入信道PRACH资源，所述第一上行资源集合为配置的用于发送所述第一小区的链路失败恢复请求信息的资源的集合。
  45. 根据权利要求41至43任一项所述的终端设备，其特征在于，所述第一上行资源 为第一上行资源集合中第一参考信号关联的PRACH资源，所述第一参考信号为与所述第一小区激活的QCL假设信息或空间相关信息相关联的参考信号，所述第一上行资源集合为配置的用于发送所述第一小区的链路失败恢复请求信息的资源的集合。
  46. 根据权利要求45所述的终端设备，其特征在于，所述第一上行资源集合中第二参考信号关联的PRACH资源用于发送所述第一小区的链路失败恢复请求信息，所述第二参考信号为与所述第一小区非激活的QCL假设信息或空间相关信息相关联的参考信号。
  47. 根据权利要求41至43任一项所述的终端设备，其特征在于，所述第一上行资源为第二上行资源集合中的物理随机接入信道PRACH资源，所述第二上行资源集合为在所述第一小区的上行资源中为所述N个第二小区配置的M个用于发送链路失败请求信息的PRACH资源的集合，所述M为大于或等于1，且小于或等于所述N的整数。
  48. 根据权利要求47所述的终端设备，其特征在于，当所述N等于所述M时，所述第二上行资源集合的一个PRACH资源与所述N个第二小区中的一个第二小区一一对应；
    所述第一上行资源为所述第二上行资源集合中所述第i个小区对应的PRACH资源。
  49. 根据权利要求48所述的终端设备，其特征在于，所述第一指示信息还用于指示所述第i个小区的标识信息。
  50. 根据权利要求47所述的终端设备，其特征在于，当所述N大于所述M时，所述第二上行资源集合中的一个PRACH资源与P个第二小区组中的一个第二小区组相对应，所述N个第二小区包括所述P个第二小区组，一个第二小区组包含一个或多个第二小区，所述P为大于等于1且小于所述N的整数；
    所述第一上行资源为所述第二上行资源集合中所述第i个小区所属的第二小区组对应的PRACH资源。
  51. 根据权利要求50所述的终端设备，其特征在于，所述第一指示信息还用于指示所述第i个小区所属的第二小区组的标识信息。
  52. 根据权利要求41至43任一项所述的终端设备，其特征在于，所述第一上行资源为在所述第一小区的上行资源上配置的专用于发送所述N个第二小区的链路失败恢复请求信息的物理上行控制信道PUCCH资源。
  53. 根据权利要求52所述的终端设备，其特征在于，所述第一指示信息包含所述第i个小区的标识信息、第三参考信号信息和第四参考信号信息中的至少一个；
    其中，所述第三参考信号信息为信道质量大于或等于第一门限的参考信号的信息，所述第四参考信号信息为信道质量小于或等于第二门限的参考信号的信息。
  54. 根据权利要求41至51任一项所述的终端设备，其特征在于，所述终端设备还包括：
    接收单元，用于接收第一信令，所述第一信令用于指示第三上行资源；
    所述发送单元，还用于在所述第三上行资源上发送第二指示信息，所述第二指示信息用于指示所述第i个小区的标识信息、第三参考信号信息和第四参考信号信息中的至少一个；
    其中，所述第三参考信号信息为信道质量大于或等于第一门限的参考信号的信息，所述第四参考信号信息为信道质量小于或等于第二门限的参考信号的信息。
  55. 根据权利要求54所述的终端设备，其特征在于，所述第一信令还用于触发所述N个第二小区、所述第i个小区或者所述第i个小区所在的第二小区组的候选参考信号资源集合。
  56. 根据权利要求54所述的终端设备，其特征在于，所述第三上行资源为物理上行共享信道PUSCH资源或PRACH资源。
  57. 根据权利要求53或54所述的终端设备，其特征在于，所述第一指示信息或所述第二指示信息用于指示所述第i个小区的标识信息，还用于指示所述第三参考信号信息和/或所述第四参考信号信息时，所述第i个小区的标识信息与所述第三参考信号信息和/或所述第四参考信号信息独立编码。
  58. 根据权利要求54所述的终端设备，其特征在于，所述第二指示信息的负载的大小与所述第一上行资源相关。
  59. 根据权利要求53或54所述的终端设备，其特征在于，所述第一指示信息的负载和/或所述第二指示信息的负载的大小为固定值；
    所述第一指示信息的负载和/或所述第二指示信息的负载的大小与所述N个第二小区对应的多个候选参考信号资源集合中下行参考信号个数最多的候选参考信号资源集合相关。
  60. 根据权利要求41至59任一项所述的终端设备，所述第一小区是用于发送对所述第i个小区调度请求信息的资源所在的小区。
  61. 一种网络设备，其特征在于，包括：
    接收单元，用于根据空间相关参数的信息，在第一上行资源上接收第一指示信息；
    发送单元，用于根据所述第一指示信息发送链路失败响应信息；
    其中，所述空间相关参数的信息为用于发送或接收第一小区的信道和/或信号的空间相关参数的信息；所述第一指示信息用于指示N个第二小区中的第i个小区的链路失败，所述N为大于或等于1的整数，所述i为大于或等于1且小于或等于所述N的整数；所述第一上行资源为所述第一小区的上行资源。
  62. 根据权利要求61所述的网络设备，其特征在于，
    所述空间相关参数的信息为用于接收所述第一小区的物理下行控制信道PDCCH的准共址QCL假设信息；
    或者，所述空间相关参数的信息为用于发送所述第一小区的物理上行控制信道PUCCH的空间相关信息；
    或者，所述空间相关参数的信息为所述第一小区的同步信号广播信道块SSB资源，
    或者，所述空间相关参数的信息为用于承载所述第一小区的链路失败恢复请求信息的信道的空间相关信息。
  63. 根据权利要求62所述的网络设备，其特征在于，
    所述QCL假设信息为所述第一小区的控制资源集合中索引值或标识最小的控制资源集合的QCL假设信息，或者为所述第一小区的公共搜索空间集合CSS的QCL假设信息，或者为所述第一小区的公共搜索空间集合CSS所在的控制资源集合的QCL假设信息；
    或者，所述空间相关信息为所述第一小区的PUCCH中索引值或标识最小的PUCCH的空间相关信息，或者为用于发送对所述第i个小区的调度请求信息的PUCCH的空间相关信息。
  64. 根据权利要求61至63任一项所述的网络设备，其特征在于，
    所述发送单元，还用于发送第一信令，所述第一信令用于指示第三上行资源；
    所述接收单元，还用于在所述第三上行资源上接收第二指示信息，所述第二指示信息用于指示所述第i个小区的标识信息、第三参考信号信息和第四参考信号信息中的至少一个；
    其中，所述第三参考信号信息为信道质量大于或等于第一门限的参考信号的信息，所述第四参考信号信息为信道质量小于或等于第二门限的参考信号的信息；
    所述发送单元根据所述第一指示信息发送链路失败响应信息，具体为：
    根据所述第一指示信息和第二指示信息发送链路失败响应信息。
  65. 根据权利要求64所述的网络设备，其特征在于，所述第一上行资源为第一上行资源集合中的物理随机接入信道PRACH资源，所述第一上行资源集合为配置的用于发送所述第一小区的链路失败恢复请求信息的资源的集合。
  66. 根据权利要求64所述的网络设备，其特征在于，所述第一上行资源为第一上行资源集合中第一参考信号关联的PRACH资源，所述第一参考信号为与所述第一小区激活的QCL假设信息或空间相关信息相关联的参考信号，所述第一上行资源集合为配置的用于发送所述第一小区的链路失败恢复请求信息的资源的集合。
  67. 根据权利要求66所述的网络设备，其特征在于，所述第一上行资源集合中第二参考信号关联的PRACH资源用于发送所述第一小区的链路失败恢复请求信息，所述第二参考信号为与所述第一小区非激活的QCL假设信息或空间相关信息相关联的参考信号。
  68. 根据权利要求64所述的网络设备，其特征在于，所述第一上行资源为第二上行资源集合中的物理随机接入信道PRACH资源，所述第二上行资源集合为在所述第一小区的上行资源中为所述N个第二小区配置的M个用于发送链路失败恢复请求信息的PRACH资源的集合，所述M为大于或等于1，且小于或等于所述N的整数。
  69. 根据权利要求68所述的网络设备，其特征在于，当所述N等于所述M时，所述第二上行资源集合的一个PRACH资源与所述N个第二小区中的一个第二小区一一对应；
    所述第一上行资源为所述第二上行资源集合中所述第i个小区对应的PRACH资源。
  70. 根据权利要求69所述的网络设备，其特征在于，所述第一指示信息还用于指示所述第i个小区的标识信息。
  71. 根据权利要求68所述的网络设备，其特征在于，当所述N大于所述M时，所述第二上行资源集合中的一个PRACH资源与P个第二小区组中的一个第二小区组相对应，所述N个第二小区包括所述P个第二小区组，一个第二小区组包含一个或多个第二小区，所述P为大于等于1且小于所述N的正整数；
    所述第一上行资源为所述第二上行资源集合中所述第i个小区所属的第二小区组对应的PRACH资源。
  72. 根据权利要求71所述的网络设备，其特征在于，所述第一指示信息还用于指示所 述第i个小区所属的第二小区组的标识信息。
  73. 根据权利要求61至63任一项所述的网络设备，其特征在于，所述第一上行资源为在所述第一小区的上行资源上配置的专用于发送所述N个第二小区的链路失败恢复请求信息的物理上行控制信道PUCCH资源。
  74. 根据权利要求73所述的网络设备，其特征在于，所述第一指示信息包含所述第i个小区的标识信息、第三参考信号信息和第四参考信号信息中的至少一个；
    其中，所述第三参考信号信息为信道质量大于或等于第一门限的参考信号的信息，所述第四参考信号信息为信道质量小于或等于第二门限的参考信号的信息。
  75. 根据权利要求64所述的网络设备，其特征在于，所述第一信令还用于触发所述N个第二小区、所述第i个小区或者所述第i个小区所在的第二小区组的候选参考信号资源集合。
  76. 根据权利要求64所述的网络设备，其特征在于，所述第二上行资源为物理上行共享信道PUSCH资源或PRACH资源。
  77. 根据权利要求64或74所述的网络设备，其特征在于，所述第一指示信息或所述第二指示信息用于指示所述第i个小区的标识信息，还用于指示所述第三参考信号信息和/或所述第四参考信号信息时，所述第i个小区的标识信息与所述第三参考信号信息和/或所述第四参考信号信息独立编码。
  78. 根据权利要求64所述的网络设备，其特征在于，所述第二指示信息的负载的大小与所述第一上行资源相关。
  79. 根据权利要求64或74所述的网络设备，其特征在于，所述第一指示信息的负载和/或所述第二指示信息的负载的大小为固定值；
    所述第一指示信息的负载和/或所述第二指示信息的负载的大小与所述N个第二小区对应的多个候选参考信号资源集合中下行参考信号个数最多的候选参考信号资源集合相关。
  80. 根据权利要求61至79任一项所述的网络设备，所述第一小区是用于发送对所述第i个小区调度请求信息的资源所在的小区。
  81. 一种链路失败恢复方法，其特征在于，包括：
    终端设备在第一上行资源上发送第一指示信息；所述第一指示信息用于指示N个第二小区中存在链路失败的小区；所述N为大于或等于1的整数；所述第一上行资源为第一小区的上行资源；
    所述终端设备接收第一信令；所述第一信令用于指示第三上行资源；
    所述终端设备在所述第三上行资源上发送第二指示信息，所述第二指示信息用于指示所述N个第二小区中链路失败的第i个小区的标识信息、第三参考信息和第四参考信息中的至少一个；
    其中，所述第三参考信号信息为信道质量大于或等于第一门限的参考信号的信息，所述第四参考信号信息为信道质量小于或等于第二门限的参考信号的信息。
  82. 根据权利要求81所述的方法，其特征在于，所述终端设备在第一上行资源上发送第一指示信息，包括：
    所述终端设备根据空间相关参数的信息，在第一上行资源上发送第一指示信息；
    所述空间相关参数的信息为用于发送或接收所述第一小区的信道或信号的空间相关参数的信息。
  83. 根据权利要求82所述的方法，其特征在于，
    所述空间相关参数的信息为用于接收所述第一小区的物理下行控制信道PDCCH的准共址QCL假设信息；
    或者，所述空间相关参数的信息为用于发送所述第一小区的物理上行控制信道PUCCH的空间相关信息；
    或者，所述空间相关参数的信息为所述第一小区的同步信号广播信道块SSB资源的空间相关参数的信息，
    或者，所述空间相关参数的信息为用于承载所述第一小区的链路失败恢复请求信息的信道的空间相关信息。
  84. 根据权利要求83所述的方法，其特征在于，
    所述QCL假设信息为所述第一小区的控制资源集合中索引值或标识最小的控制资源集合的QCL假设信息，或者为所述第一小区的公共搜索空间集合CSS的QCL假设信息，或者为所述第一小区的公共搜索空间集合CSS所在的控制资源集合的QCL假设信息；
    或者，所述PUCCH的空间相关信息为所述第一小区的PUCCH中索引值或标识最小的PUCCH的空间相关信息，或者为用于发送对所述第i个小区的调度请求信息的PUCCH的空间相关信息。
  85. 根据权利要求81至84任一项所述的方法，其特征在于，所述第一上行资源为第一上行资源集合中的物理随机接入信道PRACH资源，所述第一上行资源集合为配置的用于发送所述第一小区的链路失败恢复请求信息的资源的集合。
  86. 根据权利要求81至84任一项所述的方法，其特征在于，所述第一上行资源为第一上行资源集合中第一参考信号关联的PRACH资源，所述第一参考信号为与所述第一小区激活的QCL假设信息或空间相关信息相关联的参考信号，所述第一上行资源集合为配置的用于发送所述第一小区的链路失败恢复请求信息的资源的集合。
  87. 根据权利要求86所述的方法，其特征在于，所述第一上行资源集合中第二参考信号关联的PRACH资源，用于发送所述第一小区的链路失败恢复请求信息；所述第二参考信号为与所述第一小区非激活的QCL假设信息或空间相关信息相关联的参考信号。
  88. 根据权利要求81至84任一项所述的方法，其特征在于，所述第一上行资源为第 二上行资源集合中的物理随机接入信道PRACH资源或物理上行控制信道PUCCH资源，所述第二上行资源集合为在所述第一小区的上行资源中为所述N个第二小区配置的M个用于发送链路失败恢复请求信息的PRACH资源或PUCCH资源的集合，所述M为大于或等于1，且小于或等于所述N的整数。
  89. 根据权利要求88所述的方法，其特征在于，当所述N等于所述M时，所述第二上行资源集合的一个PRACH资源或一个PUCCH资源与所述N个第二小区中的一个第二小区一一对应；
    所述第一上行资源为所述第二上行资源集合中所述第i个小区对应的PRACH资源或PUCCH资源。
  90. 根据权利要求88所述的方法，其特征在于，当所述N大于所述M时，所述第二上行资源集合中的一个PRACH资源或一个PUCCH资源与P个第二小区组中的一个第二小区组相对应，所述N个第二小区包括所述P个第二小区组，一个第二小区组包含一个或多个第二小区，所述P为大于等于1且小于所述N的整数；
    所述第一上行资源为所述第二上行资源集合中所述第i个小区所属的第二小区组对应的PRACH资源或PUCCH资源。
  91. 根据权利要求81至84任一项所述的方法，其特征在于，所述第一上行资源为在所述第一小区的上行资源上配置的专用于发送所述N个第二小区的链路失败恢复请求信息的物理上行控制信道PUCCH资源。
  92. 根据权利要求81至84任一项所述的方法，其特征在于，所述第三上行资源为物理上行共享信道PUSCH资源或PRACH资源。
  93. 根据权利要求81至84任一项所述的方法，其特征在于，所述第二指示信息的负载的大小与所述第一上行资源相关。
  94. 一种链路失败恢复方法，其特征在于，包括：
    网络设备在第一上行资源上接收第一指示信息；所述第一指示信息用于指示N个第二小区中存在链路失败的小区；所述N为大于或等于1的整数；所述第一上行资源为第一小区的上行资源；
    所述网络设备发送第一信令，所述第一信令用于指示第三上行资源；
    所述网络设备在所述第三上行资源上接收第二指示信息，所述第二指示信息用于指示所述第i个小区的标识信息、第三参考信号信息和第四参考信号信息中的至少一个；
    其中，所述第三参考信号信息为信道质量大于或等于第一门限的参考信号的信息，所述第四参考信号信息为信道质量小于或等于第二门限的参考信号的信息；
    所述网络设备根据所述第一指示信息和第二指示信息发送链路失败响应信息。
  95. 根据权利要求94所述的方法，其特征在于，所述网络设备在第一上行资源上接收第一指示信息，包括：
    所述网络设备根据空间相关参数的信息，在第一上行资源上接收第一指示信息；
    所述空间相关参数的信息为用于发送或接收所述第一小区的信道或信号的空间相关参数的信息。
  96. 根据权利要求95所述的方法，其特征在于，
    所述空间相关参数的信息为用于接收所述第一小区的物理下行控制信道PDCCH的准共址QCL假设信息；
    或者，所述空间相关参数的信息为用于发送所述第一小区的物理上行控制信道PUCCH的空间相关信息；
    或者，所述空间相关参数的信息为所述第一小区的同步信号广播信道块SSB资源的空间相关参数的信息，
    或者，所述空间相关参数的信息为用于承载所述第一小区的链路失败恢复请求信息的信道的空间相关信息。
  97. 根据权利要求96所述的方法，其特征在于，
    所述QCL假设信息为所述第一小区的控制资源集合中索引值或标识最小的控制资源集合的QCL假设信息，或者为所述第一小区的公共搜索空间集合CSS的QCL假设信息，或者为所述第一小区的公共搜索空间集合CSS所在的控制资源集合的QCL假设信息；
    或者，所述PUCCH的空间相关信息为所述第一小区的PUCCH中索引值或标识最小的PUCCH的空间相关信息，或者为用于发送对所述第i个小区的调度请求信息的PUCCH的空间相关信息。
  98. 根据权利要求94至97任一项所述的方法，其特征在于，所述第一上行资源为第一上行资源集合中的物理随机接入信道PRACH资源，所述第一上行资源集合为配置的用于发送所述第一小区的链路失败恢复请求信息的资源的集合。
  99. 根据权利要求94至97任一项所述的方法，其特征在于，所述第一上行资源为第一上行资源集合中第一参考信号关联的PRACH资源，所述第一参考信号为与所述第一小区激活的QCL假设信息或空间相关信息相关联的参考信号，所述第一上行资源集合为配置的用于发送所述第一小区的链路失败恢复请求信息的资源的集合。
  100. 根据权利要求99所述的方法，其特征在于，所述第一上行资源集合中第二参考信号关联的PRACH资源，用于发送所述第一小区的链路失败恢复请求信息；所述第二参考信号为与所述第一小区非激活的QCL假设信息或空间相关信息相关联的参考信号。
  101. 根据权利要求94至97任一项所述的方法，其特征在于，所述第一上行资源为第二上行资源集合中的物理随机接入信道PRACH资源或物理上行控制信道PUCCH资源，所述第二上行资源集合为在所述第一小区的上行资源中为所述N个第二小区配置的M个用于发送链路失败恢复请求信息的PRACH资源或PUCCH资源的集合，所述M为大于或等于1，且小于或等于所述N的整数。
  102. 根据权利要求101所述的方法，其特征在于，当所述N等于所述M时，所述第二上行资源集合的一个PRACH资源或一个PUCCH资源与所述N个第二小区中的一个第二小区一一对应；
    所述第一上行资源为所述第二上行资源集合中所述第i个小区对应的PRACH资源或PUCCH资源。
  103. 根据权利要求101所述的方法，其特征在于，当所述N大于所述M时，所述第二上行资源集合中的一个PRACH资源或一个PUCCH资源与P个第二小区组中的一个第二小区组相对应，所述N个第二小区包括所述P个第二小区组，一个第二小区组包含一个或多个第二小区，所述P为大于等于1且小于所述N的整数；
    所述第一上行资源为所述第二上行资源集合中所述第i个小区所属的第二小区组对应的PRACH资源或PUCCH资源。
  104. 根据权利要求94至97任一项所述的方法，其特征在于，所述第一上行资源为在所述第一小区的上行资源上配置的专用于发送所述N个第二小区的链路失败恢复请求信息的物理上行控制信道PUCCH资源。
  105. 根据权利要求94至97任一项所述的方法，其特征在于，所述第三上行资源为物理上行共享信道PUSCH资源或PRACH资源。
  106. 根据权利要求94至97任一项所述的方法，其特征在于，所述第二指示信息的负载的大小与所述第一上行资源相关。
  107. 一种终端设备，其特征在于，包括：处理器和收发器；
    所述处理器，用于实现或通过所述收发器实现权利要求1至20任一项所述的方法；或者，用于实现或通过所述收发器实现权利要求81至93任一项所述的方法。
  108. 一种网络设备，其特征在于，包括：处理器和收发器；
    所述处理器，用于实现或通过所述收发器实现权利要求21至40任一项所述的方法；或者，用于实现或通过所述收发器实现权利要求94至106任一项所述的方法。
  109. 一种芯片系统，其特征在于，包括：处理器和接口；
    所述处理器，用于实现或通过所述接口实现权利要求1至20任一项所述的方法；或者
    用于实现或通过所述接口实现权利要求81至93任一项所述的方法。
  110. 一种芯片系统，其特征在于，包括：处理器和接口；
    所述处理器，用于实现或通过所述接口实现权利要求21至40任一项所述的方法；或者用于实现或通过所述接口实现权利要求94至106任一项所述的方法。
  111. 一种计算机存储介质，其特征在于，用于存储计算机程序，当所述计算机程序在计算机上运行时，使得所述计算机执行如权利要求1至20任一项所述的方法，或执行如权利要求21至40任一项所述的方法，或执行如权利要求81至93任一项所述的方法；或执行如权利要求94至106任一项所述的方法。
  112. 一种计算机程序产品，其特征在于，当所述计算机程序产品在计算机上运行时，使得所述计算机执行如权利要求1至20任一项所述的方法，或执行如权利要求21至40任一项所述的方法，或执行如权利要求81至93任一项所述的方法；或执行如权利要求94至106任一项所述的方法。
  113. 一种通信系统，其特征在于，所述通信系统包括：
    如权利要求41至60任一项所述的终端设备和如权利要求61至80任一项所述的网络设备；或如权利要求107所述的终端设备和如权利要求108所述的网络设备。
  114. 一种装置，其特征在于，包括：
    用于实现如权利要求81至93任一项所述的方法的功能模块；或者，用于实现如权利要求94至106任一项所述的方法的功能模块。
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