WO2020187154A1 - 链路失败恢复的方法和装置 - Google Patents

链路失败恢复的方法和装置 Download PDF

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Publication number
WO2020187154A1
WO2020187154A1 PCT/CN2020/079227 CN2020079227W WO2020187154A1 WO 2020187154 A1 WO2020187154 A1 WO 2020187154A1 CN 2020079227 W CN2020079227 W CN 2020079227W WO 2020187154 A1 WO2020187154 A1 WO 2020187154A1
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Prior art keywords
information
cell
request information
resource
cells
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PCT/CN2020/079227
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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
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP20774156.2A priority Critical patent/EP3930398A4/en
Publication of WO2020187154A1 publication Critical patent/WO2020187154A1/zh
Priority to US17/477,973 priority patent/US11991541B2/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/04—Arrangements for maintaining operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • 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
    • H04L5/003—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
    • H04L5/0091—Signaling for the administration of the divided path
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/18—Management of setup rejection or failure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/19—Connection re-establishment

Definitions

  • This application relates to the field of communications, and more specifically, to a method and device for link failure recovery.
  • the terminal When the terminal detects a link failure, it sends two request information to the network device.
  • the first request information is used to inform the network device that the link has failed, and the second request information is used to indicate the information of the newly identified beam ,
  • the first request information is sent periodically, and the second request information is sent aperiodically, so that compared to frequent periodic sending once, the request information used to indicate link failure and newly identified beam information can be Save resource overhead.
  • the first request information may be beam failure recovery request (BFRQ) 1, BFRQ1
  • the second request information may be BFRQ2.
  • each component carrier corresponds to a cell.
  • the terminal detects a link failure, if the request information is sent in the above manner, the resource overhead is relatively large.
  • the present application provides a method and device for link failure recovery, which can save resource overhead.
  • a method for link failure recovery includes: sending first request information on a first resource, where the first request information is used to indicate a link failure of at least one cell among L cells ,
  • the L is an integer greater than 1;
  • the second request information is sent on the second resource, and the second request information is used to indicate the cell information of the M cells where the link of the L cells fails, M ⁇ 1, and M Is an integer.
  • the terminal When the terminal detects that the link of any one of the L cells fails, or the link of any multiple cells of the L cells fails, it can send the first resource to the network device on the same resource (that is, the first resource).
  • the second request information is used to indicate the cell identities of the M cells where the link fails in the L cells, so that the network device can learn the specific link failure related cells among the L cells according to the second request information information.
  • the second request information can be used to indicate the cell information of any cell in which the link of the L cells fails, so that the request information of each cell occupies different resources to send the first Second, request information, saving resource overhead.
  • the second request information can be used to indicate the cell information of multiple cells where the link fails. In this way, the request information of each of the M cells is sent separately or in time sharing. The application embodiment saves the recovery time delay.
  • the cell information of the M cells includes the cell identities of the M cells and/or the N first reference signal information used to restore the M cells, N ⁇ 1, and N is an integer .
  • the cell identity and the first reference signal information may have a mapping relationship.
  • the network device can determine the corresponding first reference signal according to the identity of the M cell, Or in the case that the cell information of M cells only includes N first reference signals, the network device can determine the corresponding cell identity according to the N first reference signals, thereby reducing the content carried in the second indication information and reducing resources Occupied.
  • the method further includes: detecting response information of the M cells; sending third request information, wherein, in the case that the response information of the i-th cell in the M cells is not detected ,
  • the third request information indicates the cell identity of the i-th cell and/or the second reference signal information used to restore the i-th cell, i is a positive integer, and 1 ⁇ i ⁇ M, and when the In the case of the response information of the j-th cell among the M cells, the third request information also indicates the confirmation information of the j-th cell, where j is a positive integer, and 1 ⁇ j ⁇ M, i is not equal to j .
  • the terminal When the terminal detects the response information of the second request information corresponding to the j-th cell, the terminal sends the third request information including the confirmation information of the j-th cell to the network device, so that the network device can know the j-th cell.
  • the link of the cell is successfully restored, so that the second resource can be released to avoid resource waste, or when the network equipment or the M cells have successfully restored the link, the second resource can be released in time (it can be configured to transmit other information, or Released to others for transmission of uplink data or signals).
  • the third request information is sent, where, in the case that the response information of the i-th cell among the M cells is not detected, the third request information indicates the information of the i-th cell
  • the cell identity and/or the second reference signal information used to restore the i-th cell, i is a positive integer and 1 ⁇ i ⁇ M, or when the response information of the j-th cell among the M cells is detected
  • the terminal device If the terminal device does not detect the response information of the second request information, the terminal can resend the cell information of the i-th cell, thereby increasing the probability of successful link recovery and improving the efficiency of signal transmission.
  • the cell information of the k-th cell among the M cells includes q pieces of first reference signal information, where k is a positive integer, and 1 ⁇ q ⁇ N.
  • the cell information of the k-th cell among the M cells may include multiple first reference signals, that is, the terminal may simultaneously send multiple reference signal information to jointly recover the k-th cell whose link fails, This further improves the probability of link recovery success.
  • the detecting the response information of the M cells includes: detecting the response information corresponding to the k-th cell according to the q reference signal information.
  • the terminal device can detect the response information based on the q reference signals in the manner of beam scanning, or the terminal device can detect the response information based on one or more of the q reference signals at the same time (the terminal device can have how many Panels).
  • the detecting the response information of the M cells includes: detecting the response information corresponding to the k-th cell according to the priority order of the q reference signal information.
  • the priority of the q reference signal information may be determined by the terminal according to the success rate of restoring the link of the k-th cell or the quality of the reference signal, or may be determined according to the order of the ID of the reference signal information, or according to the reference signal The order of information reporting is determined. According to the priority order of the q reference signal information, the terminal can respectively detect the response information corresponding to the k-th cell, which can increase the probability of successful transmission of the response information of the second request information, that is, the probability of successful link failure recovery .
  • the priority of the reference signal information in this embodiment may be equivalent to the order of the success rate of restoring the link of the k-th cell or the order of the quality of the reference signal, or the order of the ID of the reference signal information, or With reference to the order in which the signal information is reported, this application may also have other description methods, which are not limited.
  • the detecting the response information corresponding to the k-th cell according to the priority order of the reference signal information includes: according to the p-th priority of the q reference signal information in the p-th time window For the reference signal information of the hierarchical order, the response information corresponding to the k-th cell is detected, 1 ⁇ p ⁇ q.
  • the terminal detecting the response information corresponding to the k-th cell according to each of the q reference signal information may be detected in the corresponding time window, which avoids detecting the response information of the second request information according to a certain reference signal
  • the waiting time of is too long, resulting in a long link recovery delay, that is, the embodiment of the present application improves the efficiency of link recovery and reduces the link recovery time.
  • the method further includes: after the response information corresponding to the k-th cell is not detected according to the p-th priority ranking within the p-th time window, sending fifth request information, the The fifth request information is used to indicate that response information corresponding to the k-th cell is not detected in the p-th time window.
  • fifth request information may be sent to the network device, where the fifth request information is used to indicate that the response information of the second request information corresponding to the p-th reference signal is not detected,
  • the network device can learn whether the terminal receives the response information according to the fifth request information, and then learn that the terminal will continue to send the request information, so that the network device can make preparations for link recovery in advance, which further saves time delay.
  • the method further includes: after the response information of the second request information is not detected according to the p-th priority order in the p-th time window, according to the p+1-th time window The p+1-th priority-ranked reference signal information of the q reference signal information is detected, and the response information of the second request information is detected, and the p+1-th time window is a period later than the p-th time window.
  • the terminal detecting the response information of the second request information may be detecting the response information of the second request information according to the previous reference signal information (for example, the p-th reference signal information) In the case of failure, the response information of the second request information is detected according to the next reference signal information (for example, the p+1th reference signal information), so as to further save the signaling overhead.
  • the previous reference signal information for example, the p-th reference signal information
  • the response information of the second request information is detected according to the next reference signal information (for example, the p+1th reference signal information), so as to further save the signaling overhead.
  • the fifth request information is carried in the second resource.
  • the fifth request information may be carried on the second resource, that is, the same resource is occupied by the second request information, that is, the fifth request information may use a semi-static resource to save resource overhead.
  • the sending the third request information includes: sending the third request information on the second resource.
  • the terminal can multiplex the resource for sending the second request information to send the third request information, without waiting for the response information of the first request information to allocate resources to send the second request information, thereby saving the time of resource allocation, in addition, the overall improvement Link recovery speed.
  • the method further includes: releasing the second resource when the response information of the M cells is detected.
  • the terminal may release the second resource when all the M cells are successfully restored. For example, when the terminal detects the response information of the second request information corresponding to each of the M cells, it can determine that all the M cells are successfully restored. Or, when the terminal detects the response information of the second request information corresponding to a part of the cells in the M cells, and the response information of the third request information corresponding to another part of the cells, it determines that all the M cells are successfully restored. Or when the terminal detects the response information of the third request information of each of the M cells, it determines that all the M cells are successfully restored.
  • the method further includes: resending the first request information on the fourth resource; receiving the resent The response information of the first request information, the response information of the re-sent first request information is used to indicate the third resource; wherein the sending the third request information includes: sending the third request information on the third resource.
  • the third resource can be dynamically configured, which improves resource utilization.
  • the fourth resource is the same as the first resource.
  • the resource for transmitting the first request information can be static, that is, the resource occupied by the first transmission of the first request information, or it can be used to retransmit the first request information without reallocation, saving Time.
  • W ⁇ X ⁇ L W is the maximum number of transmissions of the first request information
  • X is the transmission of request information for indicating cell information of any one of the M cells Maximum number of times.
  • Whether M is equal to 1 or greater than 1, may depend on the size of the second resource configured by the base station or the resource cell situation where the link fails. In this way, the embodiment of the present application can prevent the terminal device from frequently sending link failure recovery request information and save power consumption.
  • the method further includes: receiving response information of the first request information, where the response information of the first request information is used to indicate or activate the second resource.
  • the response information for the first request information is used to activate the second resource.
  • the terminal device needs to retransmit the cell information of the link failure, it does not need to send the retransmission information through the resource allocated by the response information of the first request information, but Sending the retransmission information directly on the second resource can effectively reduce the recovery delay.
  • the response information of the first request information is used to indicate the second resource.
  • the terminal device needs to retransmit the cell information of the link failure, it can send the retransmission information through the resources dynamically allocated by the response information of the first request information, which can be effective Reduce resource overhead.
  • the second resource is configured by high-layer signaling, or the second resource is a resource associated with the first resource or the first request information.
  • the second resource may be configured by the network device for the terminal, and sent to the terminal through high-level signaling or system information.
  • the second resource may also be pre-appointed by the network device and the terminal device, or set in advance by the terminal, which is not limited in this application.
  • the retransmission information can be sent directly on the second resource instead of the resource allocated by the response information of the first request information. It can effectively reduce the link recovery delay and improve the link recovery speed.
  • the method before sending the first request information on the first resource, the method further includes: determining that there is at least one cell link failure in the L cells; or determining that there is at least one cell link failure in the L cells One cell link fails, and reference signal information used to restore the link of the at least one cell.
  • the embodiments of the present application can improve the flexibility of link recovery.
  • the method further includes: receiving configuration information, where the configuration information is used to indicate the first resource.
  • a method for link failure recovery includes: receiving first request information in a first resource, where the first request information is used to indicate link failure of at least one cell among L cells;
  • the L is an integer greater than 1;
  • the second request information is received in the second resource, and the second request information is used to indicate the cell information of the M cells where the link of the L cells fails, M ⁇ 1, and M is Integer.
  • the second request information is used to indicate the cell identities of the M cells where the link fails in the L cells, so that the network device can learn the specific link failure related cells among the L cells according to the second request information information.
  • the cell information of the M cells includes the cell identities of the M cells and/or the N first reference signal information used to restore the M cells, N ⁇ 1, and N is an integer .
  • the cell identity and the first reference signal information may have a mapping relationship.
  • the network device can determine the corresponding first reference signal according to the identity of the M cell, Or in the case that the cell information of M cells only includes N first reference signals, the network device can determine the corresponding cell identity according to the N first reference signals, thereby reducing the content carried in the second indication information and reducing resources Occupied.
  • the method further includes: sending response information of the j-th cell among the M cells, and receiving third request information, where the third request information is used to indicate the i-th cell among the M cells.
  • the cell information of the k-th cell among the M cells includes q pieces of first reference signal information, where k is a positive integer, and 1 ⁇ q ⁇ N.
  • the cell information of the k-th cell in the M cells may include multiple first reference signals, that is, the network device may receive multiple reference signal information at the same time to jointly recover the k-th cell whose link fails , Thereby further improving the probability of successful link recovery.
  • the sending the response information of the M cells includes: sending the response information corresponding to the k-th cell according to the q reference signal information.
  • the network device can send the response information according to the q reference signals in the manner of beam scanning, or the network device can send the response information according to one or more of the q reference signals at the same time (the network device can have how many Panels).
  • the sending the response information of the M cells includes: sending the response information corresponding to the k-th cell according to the priority order of the q reference signal information.
  • the priority of the q reference signal information may be determined by the network equipment according to the success rate of restoring the link of the k-th cell or the quality of the reference signal, or may be determined according to the order of the ID of the reference signal information, or according to the reference The order in which the signal information is reported is determined.
  • the network device respectively sends the response information corresponding to the k-th cell according to the priority order of the q reference signal information, which can increase the probability of successful transmission of the response information of the second request information, that is, the probability of successful link failure recovery .
  • the priority of the reference signal information in this embodiment may be equivalent to the order of the success rate of restoring the link of the k-th cell or the order of the quality of the reference signal, or the order of the ID of the reference signal information, or With reference to the order in which the signal information is reported, the present invention may also have other description methods, which are not limited.
  • the sending the response information corresponding to the k-th cell according to the priority order of the reference signal information includes: according to the p-th priority of the q reference signal information in the p-th time window For the reference signal information of the hierarchical order, the response information corresponding to the k-th cell is sent, 1 ⁇ p ⁇ q.
  • the network device sending the response information corresponding to the k-th cell according to each of the q reference signal information may be sent in the corresponding time window, which avoids sending the response of the second request information according to a certain reference signal
  • the waiting time of information is too long, resulting in a long link recovery delay, that is, the embodiment of the present application improves the efficiency of link recovery and reduces the link recovery time.
  • the method further includes: receiving fifth request information, where the fifth request information is used to indicate that response information corresponding to the k-th cell is not detected in the p-th time window.
  • the network device can learn whether the terminal receives the response information according to the fifth request information, and then learn that the terminal will continue to send the request information, so that the network device can make preparations for link recovery in advance, which further saves time delay.
  • the fifth request information is carried in the second resource.
  • the fifth request information may be carried on the second resource, that is, the same resource is occupied by the second request information, that is, the fifth request information may use a semi-static resource to save resource overhead.
  • the method further includes: releasing the second resource when sending response information of the M cells.
  • the network device may release the second resource when all the M cells are successfully restored. For example, the network device may know that the terminal device detects the response information of the second request information corresponding to each of the M cells, or the network device may send the second request information corresponding to each of the M cells. It is determined that all the M cells have recovered successfully. Or, when the network device learns that the terminal detects the response information of the second request information corresponding to a part of the M cells and the response information of the third request information corresponding to another part of the M cells, it determines that all the M cells are successfully restored.
  • the network device sends the response information of the second request information corresponding to a part of the M cells and the response information of the third request information corresponding to another part of the cells, it is determined that all the M cells are successfully restored. Or, when the network device sends the response information of the third request information of each of the M cells, it is determined that all the M cells are successfully restored. It should be understood that the manner in which the network device learns the response information of the second request information or the response information of the third request information detected by the terminal device may be that the network device receives the confirmation information of the cell.
  • the network device re-receives the first request information on the fourth resource; sends the response information of the re-sent first request information, and the response information of the re-sent first request information is used to indicate the first request information.
  • the receiving the third request information includes: receiving the third request information on the second resource.
  • the network device multiplexes the resource of the second request information and receives the third request information sent by the terminal, which improves the link recovery speed as a whole.
  • the method further includes: receiving first request information on the fourth resource; sending response information of the first request information, where the response information of the first request information is used to indicate the third resource; Receiving the third request information includes: receiving the third request information on the third resource.
  • the third resource can be dynamically configured, which improves resource utilization.
  • the fourth resource is the same as the first resource.
  • the resource for transmitting the first request information can be static, that is, the resource occupied by the first transmission of the first request information, or it can be used to retransmit the first request information without reallocation, saving Time.
  • W ⁇ X ⁇ L W is the maximum number of transmissions of the first request information
  • X is the maximum number of transmissions of the cell information request information of any one of the M cells value.
  • Whether M is equal to 1 or greater than 1, may depend on the size of the second resource configured by the base station or the resource cell situation where the link fails. In this way, the embodiment of the present application can prevent the terminal device from frequently sending link failure recovery request information and save power consumption.
  • the method before the second resource receives the second request information, the method further includes: sending response information of the first request information, where the response information is used to indicate or activate the second resource.
  • the response information for the first request information is used to activate the second resource.
  • the terminal device needs to retransmit the cell information of the link failure, it does not need to send the retransmission information through the resource allocated by the response information of the first request information, but Sending the retransmission information directly on the second resource can effectively reduce the recovery delay.
  • the response information of the first request information is used to indicate the second resource.
  • the terminal device needs to retransmit the cell information of the link failure, it can send the retransmission information through the resources dynamically allocated by the response information of the first request information, which can be effective Reduce resource overhead.
  • the method before the second resource receives the second request information, the method further includes: sending high-layer signaling, where the high-layer signaling is used to configure the second resource.
  • the second resource may be configured by the network device for the terminal, and sent to the terminal through high-level signaling or system information.
  • the second resource is a resource associated with the first resource or the first request information.
  • the retransmission information can be sent directly on the second resource instead of the resource allocated by the response information of the first request information. It can effectively reduce the link recovery delay and improve the link recovery speed.
  • the method further includes: sending configuration information, where the configuration information is used to configure the first resource.
  • a method for link failure recovery includes: sending first request information, where the first request information is used to indicate M cells and/or N first reference signal information where the link failed , Where the first reference signal information is used to restore the link of the cell where the link fails, M ⁇ 1, N ⁇ 1, and an integer of both M and N; the response information of the M cells is detected; In the case of the response information of the i-th cell among the M cells, the second request information is sent, and the second request information is used to indicate the i-th cell and/or the second reference used to restore the i-th cell Signal information, i is a positive integer, and 1 ⁇ i ⁇ M.
  • the second request information is also used to indicate the jth cell and/or the jth cell. Confirmation information of the cell, where j is a positive integer, and 1 ⁇ j ⁇ M.
  • the sending the first request information includes: sending the first request information on a first resource, the first resource is an authorization-free PUSCH resource, or the first resource is a PUCCH resource.
  • the method further includes: receiving high-layer signaling, where the high-layer signaling is used to indicate the first resource.
  • the number of transmissions of the request information for at least one of the M cells and/or at least one of the N reference signal information used to indicate the link failure is less than or equal to the preset Set the number threshold or the number threshold configured by the network device.
  • the method before sending the first request information, further includes: determining that at least one cell link failure exists in the L cells; or determining that at least one cell link failure exists in the L cells , And a reference signal used to restore the link of the at least one cell.
  • the reference signal information corresponding to the k-th cell among the M cells that indicate the link failure in the second request information is q pieces of reference signal information, 1 ⁇ k ⁇ M, 1 ⁇ q ⁇ N, and both k and q are integers.
  • the detecting the response information of the M cells includes: detecting the response information corresponding to the k-th cell according to the priority order of the q reference signal information.
  • the detecting the k-th cell response information according to the priority order of the q reference signal information includes: according to the p-th priority of the q reference signal information in the p-th time window For the reference signal information of the hierarchical order, the response information corresponding to the k-th cell is detected, 1 ⁇ p ⁇ q.
  • the method further includes: after the response information corresponding to the k-th cell is not detected according to the p-th priority ranking within the p-th time window, sending fifth request information, the The fifth request information is used to indicate that response information corresponding to the k-th cell is not detected in the p-th time window.
  • the method further includes: after the response information of the second request information is not detected according to the p-th priority order in the p-th time window, according to the p+1-th time window The p+1-th priority-ranked reference signal information of the q reference signal information is detected, and the response information of the second request information is detected, and the p+1-th time window is a period later than the p-th time window.
  • the fifth request information is carried in the second resource.
  • a method for link failure recovery includes: receiving first request information, where the first request information is used to indicate M cells and/or N first reference signal information where the link failed , Where the first reference signal information is used to restore the link of the cell where the link fails, M ⁇ 1, N ⁇ 1, and an integer of both M and N; receiving the second request information, which is used for Indicate the i-th cell and/or the second reference signal information for restoring the i-th cell, i is a positive integer, and 1 ⁇ i ⁇ M.
  • the method before receiving the second request information, further includes: sending response information of the j-th cell; wherein the second request information is also used to indicate the sum of the j-th cell /Or the confirmation information of the j-th cell, where j is a positive integer and 1 ⁇ j ⁇ M.
  • the receiving the first request information includes: receiving the first request information on a first resource, the first resource is an authorization-free PUSCH resource, or the first resource is a PUCCH resource.
  • the method further includes: sending high-layer signaling, where the high-layer signaling is used to indicate the first resource.
  • the cell information of the k-th cell among the M cells includes q pieces of first reference signal information, where k is a positive integer, and 1 ⁇ q ⁇ N.
  • the cell information of the k-th cell in the M cells may include multiple first reference signals, that is, the network device may receive multiple reference signal information at the same time to jointly recover the k-th cell whose link fails , Thereby further improving the probability of successful link recovery.
  • the sending the response information of the M cells includes: sending the response information corresponding to the k-th cell according to the q reference signal information.
  • the network device can send the response information according to the q reference signals in the manner of beam scanning, or the network device can send the response information according to one or more of the q reference signals at the same time (the network device can have how many Panels).
  • the sending the response information of the M cells includes: sending the response information corresponding to the k-th cell according to the priority order of the q reference signal information.
  • the priority of the q reference signal information may be determined by the network equipment according to the success rate of restoring the link of the k-th cell or the quality of the reference signal, or may be determined according to the order of the ID of the reference signal information, or according to the reference The order of reporting signal information is determined.
  • the network device respectively sends the response information corresponding to the k-th cell according to the priority order of the q reference signal information, which can increase the probability of successful response information transmission, that is, the probability of successful link failure recovery.
  • the priority of the reference signal information in this embodiment may be equivalent to the order of the success rate of restoring the link of the k-th cell or the order of the quality of the reference signal, or the order of the ID of the reference signal information, or With reference to the order in which the signal information is reported, the present invention may also have other description methods, which are not limited.
  • the sending the response information corresponding to the k-th cell according to the priority order of the reference signal information includes: according to the p-th priority of the q reference signal information in the p-th time window For the reference signal information of the hierarchical order, the response information corresponding to the k-th cell is sent, 1 ⁇ p ⁇ q.
  • the network device sending the response information corresponding to the k-th cell according to each of the q reference signal information may be sent in the corresponding time window, which avoids sending the response of the first request information according to a certain reference signal
  • the waiting time of information is too long, resulting in a long link recovery delay, that is, the embodiment of the present application improves the efficiency of link recovery and reduces the link recovery time.
  • the method further includes: receiving fifth request information, where the fifth request information is used to indicate that response information corresponding to the k-th cell is not detected in the p-th time window.
  • the network device can learn whether the terminal receives the response information according to the fifth request information, and then learn that the terminal will continue to send the request information, so that the network device can make preparations for link recovery in advance and further save time delay.
  • the fifth request information is carried in the second resource.
  • the fifth request information may be carried on the second resource, that is, the same resource is occupied by the second request information, that is, the fifth request information may use a semi-static resource to save resource overhead.
  • the method further includes: releasing the second resource when sending response information of the M cells.
  • the network device may release the second resource when all the M cells are successfully restored. For example, the network device may know that the terminal device detects the response information of the second request information corresponding to each of the M cells, or the network device may send the second request information corresponding to each of the M cells. It is determined that all the M cells have recovered successfully. Or, when the network device learns that the terminal detects the response information of the first request information corresponding to a part of the M cells and the response information of the second request information corresponding to another part of the M cells, it determines that all the M cells are successfully restored.
  • the network device when the network device sends the response information of the first request information corresponding to a part of the M cells and the response information of the second request information corresponding to the other part of the cells, it is determined that all the M cells are successfully restored. Or when the network device sends the response information of the second request information of each of the M cells, it is determined that all the M cells are successfully restored. It should be understood that the manner in which the network device learns the response information of the first request information or the response information of the second request information detected by the terminal device may be that the network device receives the confirmation information of the cell.
  • Whether M is equal to 1 or greater than 1, may depend on the size of the first resource configured by the base station or the resource cell situation where the link fails. In this way, the embodiment of the present application can prevent the terminal device from frequently sending link failure recovery request information and save power consumption.
  • a method for link failure recovery includes: sending first request information on a first resource, where the first request information is used to indicate a link failure of at least one cell among L cells ,
  • the L is an integer greater than 1; send M second request information, each of the M second request information is used to indicate the cell information of the cell where the link fails, M ⁇ 1, and M Is an integer.
  • the cell information includes the cell identity of the corresponding link-failed cell and the first reference signal information used to restore the corresponding link-failed cell.
  • the method further includes: detecting the response information of the M second request information; when the response information corresponding to the sth second request information in the M second request information is not detected In this case, the third request information is sent, and the third request information is used to indicate the s-th cell and/or to restore the second reference signal information of the s-th cell, s ⁇ 1,2,...,M ⁇ .
  • the reference signal information corresponding to the sth cell indicated by the sth second request information in the M second request information is q pieces of reference signal information, 1 ⁇ s ⁇ M, and k Is an integer.
  • the detecting the response information of the second request information includes: detecting the response information of the second request information corresponding to the s-th cell according to the priority order of the q reference signal information.
  • the detecting the response information of the second request information corresponding to the s-th cell according to the priority order of the q reference signal information includes: according to the second request information in the p-th time window The indicated p-th prioritized reference signal information of the q pieces of reference signal information, and detecting the response information of the second request information, 1 ⁇ p ⁇ q.
  • the method further includes: after the response information of the second request information is not detected according to the p-th priority ranking within the p-th time window, sending the fifth request information, the fifth The request information is used to indicate that response information for the second request information is not detected in the p-th time window.
  • the method further includes: after the response information of the second request information is not detected according to the p-th priority order in the p-th time window, according to the p+1-th time window The p+1-th priority-ranked reference signal information of the q reference signal information is detected, and the response information of the second request information is detected, and the p+1-th time window is a period later than the p-th time window.
  • the resource used for the fifth request information is the same as the resource used for carrying the sth second request information.
  • the sending the M second request information includes: sending the sth second request information on the second resource; wherein, the sending the third request information includes: on the second resource, Send the third request information.
  • the method further includes: releasing the second resource when the response information of the s-th cell is detected.
  • the second resource is configured by high-layer signaling, or the second resource is a resource associated with the first resource or the first request information.
  • the method further includes: resending the first request information on the fourth resource;
  • the sending of the third request information includes: sending the first request information on the third resource 3. Request information.
  • the fourth resource is the same as the first resource.
  • L ⁇ W ⁇ X ⁇ L is the maximum number of transmission times of the first request information
  • X is used to indicate the sth cell and/or to restore the sth cell The maximum number of times the cell information request information is transmitted.
  • sending the M second request information includes: sending the M second request information according to the priority of the cell corresponding to each second request information in the M second request information.
  • the priority of the cell is determined by the sequence of link failures, or the priority of the cell is determined by the value of the cell identifier, or the priority of the cell
  • the height is determined by whether the cell belongs to the primary cell or the secondary cell.
  • the method further includes: receiving configuration information, where the configuration information is used to indicate the first resource.
  • a method for link failure recovery includes: receiving first request information in a first resource, where the first request information is used to indicate link failure of at least one cell among L cells, The L is an integer greater than 1; the second request information is received, and the second request information is used to indicate the cell information of the cell where the link fails, M ⁇ 1, and M is an integer.
  • the cell information includes the cell identity of the corresponding link-failed cell and the first reference signal information used to restore the corresponding link-failed cell.
  • the method further includes: receiving third request information, where the third request information is used to indicate the cell identity of the s-th cell and/or the second reference used to restore the s-th cell Signal information, s ⁇ 1, 2, ..., M ⁇ .
  • the receiving the second request information includes: receiving the sth second request information on a second resource; wherein, the receiving the third request information includes: receiving on the second resource The third request information.
  • the method further includes: receiving first request information on the fourth resource; sending response information of the first request information, where the response information of the first request information is used to indicate the third resource; Receiving the third request information includes: receiving the third request information on the third resource.
  • the fourth resource is the same as the first resource.
  • the method before the second resource receives the second request information, the method further includes: sending response information of the first request information, where the response information is used to indicate or activate the second resource.
  • the method before the second resource receives the second request information, the method further includes: sending high-layer signaling, where the high-layer signaling is used to configure the second resource.
  • the second resource is a resource associated with the first resource or the first request information.
  • the method further includes: sending configuration information, where the configuration information is used to configure the first resource.
  • the cell information of the k-th cell among the M cells includes q pieces of first reference signal information, where k is a positive integer, and 1 ⁇ q ⁇ N.
  • the cell information of the k-th cell in the M cells may include multiple first reference signals, that is, the network device may receive multiple reference signal information at the same time to jointly recover the k-th cell whose link fails , Thereby further improving the probability of successful link recovery.
  • the sending the response information of the M cells includes: sending the response information corresponding to the k-th cell according to the q reference signal information.
  • the network device can send the response information according to the q reference signals in the manner of beam scanning, or the network device can send the response information according to one or more of the q reference signals at the same time (the network device can have how many Panels).
  • the sending the response information of the M cells includes: sending the response information corresponding to the k-th cell according to the priority order of the q reference signal information.
  • the priority of the q reference signal information may be determined by the network equipment according to the success rate of restoring the link of the k-th cell or the quality of the reference signal, or may be determined according to the order of the ID of the reference signal information, or according to the reference The order in which the signal information is reported is determined.
  • the network device respectively sends the response information corresponding to the k-th cell according to the priority order of the q reference signal information, which can increase the probability of successful transmission of the response information of the second request information, that is, the probability of successful link failure recovery .
  • the priority of the reference signal information in this embodiment may be equivalent to the order of the success rate of restoring the link of the k-th cell or the order of the quality of the reference signal, or the order of the ID of the reference signal information, or With reference to the order in which the signal information is reported, the present invention may also have other description methods, which are not limited.
  • the sending the response information corresponding to the k-th cell according to the priority order of the reference signal information includes: according to the p-th priority of the q reference signal information in the p-th time window For the reference signal information of the hierarchical order, the response information corresponding to the k-th cell is sent, 1 ⁇ p ⁇ q.
  • the network device sending the response information corresponding to the k-th cell according to each of the q reference signal information may be sent in the corresponding time window, which avoids sending the response of the second request information according to a certain reference signal
  • the waiting time of information is too long, resulting in a long link recovery delay, that is, the embodiment of the present application improves the efficiency of link recovery and reduces the link recovery time.
  • the method further includes: receiving fifth request information, where the fifth request information is used to indicate that response information corresponding to the k-th cell is not detected in the p-th time window.
  • the network device can learn whether the terminal receives the response information according to the fifth request information, and then learn that the terminal will continue to send the request information, so that the network device can make preparations for link recovery in advance, which further saves time delay.
  • the fifth request information is carried in the second resource.
  • the fifth request information may be carried on the second resource, that is, the same resource is occupied by the second request information, that is, the fifth request information may use a semi-static resource to save resource overhead.
  • the method further includes: releasing the second resource when sending response information of the M cells.
  • the network device may release the second resource when all the M cells are successfully restored. For example, the network device may know that the terminal device detects the response information of the second request information corresponding to each of the M cells, or the network device may send the second request information corresponding to each of the M cells. It is determined that all the M cells have recovered successfully. Or, when the network device learns that the terminal detects the response information of the second request information corresponding to a part of the M cells and the response information of the third request information corresponding to another part of the M cells, it determines that all the M cells are successfully restored.
  • the network device sends the response information of the second request information corresponding to a part of the M cells and the response information of the third request information corresponding to another part of the cells, it is determined that all the M cells are successfully restored. Or, when the network device sends the response information of the third request information of each of the M cells, it is determined that all the M cells are successfully restored. It should be understood that the manner in which the network device learns the response information of the second request information or the response information of the third request information detected by the terminal device may be that the network device receives the confirmation information of the cell.
  • the network device re-receives the first request information on the fourth resource; sends the response information of the re-sent first request information, and the response information of the re-sent first request information is used to indicate the first request information.
  • W ⁇ X ⁇ L W is the maximum number of transmissions of the first request information
  • X is the maximum number of transmissions of the cell information request information of any one of the M cells value.
  • Whether M is equal to 1 or greater than 1, may depend on the size of the second resource configured by the base station or the resource cell situation where the link fails. In this way, the embodiment of the present application can prevent the terminal device from frequently sending link failure recovery request information and save power consumption.
  • a device for determining transmission resources may be a terminal or a chip in the terminal.
  • the device has the function of realizing the aforementioned first aspect, third aspect or fifth aspect and various possible implementation manners. This function can be realized by hardware, or by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above-mentioned functions.
  • the device includes a processing module and a transceiver module.
  • the transceiver module may be, for example, at least one of a transceiver, a receiver, and a transmitter, and the transceiver module may include a radio frequency circuit or an antenna.
  • the processing module may be a processor.
  • the device further includes a storage module, and the storage module may be a memory, for example.
  • the storage module is used to store instructions.
  • the processing module is connected to the storage module, and the processing module can execute instructions stored in the storage module or instructions derived from other sources, so that the device executes the first aspect, the third aspect, or the fifth aspect, or any one of them Methods.
  • the chip when the device is a chip, the chip includes: a processing module.
  • the chip also includes a transceiver module.
  • the transceiver module may be, for example, an input/output interface or pin on the chip. Or circuits, etc.
  • the processing module may be a processor, for example.
  • the processing module can execute instructions so that the chip in the terminal executes the first aspect, the third aspect, or the fifth aspect, and any possible implementation communication method.
  • the processing module may execute instructions in the storage module, and the storage module may be a storage module in the chip, such as a register, a cache, and the like.
  • the storage module may also be located in the communication device but outside the chip, such as read-only memory (ROM) or other types of static storage devices that can store static information and instructions, random access memory (random access memory) memory, RAM) etc.
  • ROM read-only memory
  • RAM random access memory
  • the processor mentioned in any of the above can be a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more for controlling the above All aspects of the communication method program execution integrated circuit.
  • CPU central processing unit
  • ASIC application-specific integrated circuit
  • a device in an eighth aspect, may be a network device or a chip in the network device.
  • the device has the function of realizing the aforementioned second aspect, fourth aspect or sixth aspect and various possible implementation manners. This function can be realized by hardware, or by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above-mentioned functions.
  • the device includes a transceiver module.
  • the device further includes a processing module.
  • the transceiver module may be, for example, at least one of a transceiver, a receiver, and a transmitter.
  • the transceiver module Can include radio frequency circuits or antennas.
  • the processing module may be a processor.
  • the device further includes a storage module, and the storage module may be a memory, for example. When a storage module is included, the storage module is used to store instructions.
  • the processing module is connected to the storage module, and the processing module can execute instructions stored in the storage module or instructions derived from other sources, so that the device executes the above-mentioned second, fourth, or sixth aspects, and various possibilities Implementation method of communication.
  • the device can be a network device.
  • the chip when the device is a chip, the chip includes a transceiver module.
  • the device also includes a processing module.
  • the transceiver module may be, for example, an input/output interface or pin on the chip. Or circuits, etc.
  • the processing module may be a processor, for example.
  • the processing module can execute instructions so that the chip in the terminal executes the second aspect, the fourth aspect, or the sixth aspect, as well as any possible implementation communication method.
  • the processing module may execute instructions in the storage module, and the storage module may be a storage module in the chip, such as a register, a cache, and the like.
  • the storage module may also be located in the communication device but outside the chip, such as read-only memory (ROM) or other types of static storage devices that can store static information and instructions, random access memory (random access memory) memory, RAM) etc.
  • ROM read-only memory
  • RAM random access memory
  • the processor mentioned in any of the above can be a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more for controlling the above All aspects of the communication method program execution integrated circuit.
  • CPU central processing unit
  • ASIC application-specific integrated circuit
  • a computer storage medium is provided, and program code is stored in the computer storage medium, and the program code is used to instruct the execution of the above-mentioned first, third, or fifth aspects, and any possible implementations thereof Method of instruction.
  • a computer storage medium is provided, and program code is stored in the computer storage medium, and the program code is used to instruct the execution of the above-mentioned second, fourth, or sixth aspect, and any possible implementations thereof Method of instruction.
  • a computer program product containing instructions which when running on a computer, causes the computer to execute the above-mentioned first aspect, third aspect, or fifth aspect, or the method in any possible implementation manner thereof.
  • a computer program product containing instructions which when running on a computer, causes the computer to execute the above-mentioned second aspect, fourth aspect, or sixth aspect, or any possible implementation method thereof.
  • a communication system in a thirteenth aspect, includes a device capable of implementing the methods and various possible designs of the above-mentioned first aspect and the above-mentioned device capable of implementing the various methods and various possible designs of the above-mentioned second aspect. The function of the device.
  • a communication system in a fourteenth aspect, includes a device capable of implementing the methods and various possible designs of the foregoing third aspect, and the foregoing device having various methods and various possible designs that implement the foregoing fourth aspect. The function of the device.
  • a communication system in a fifteenth aspect, includes a device capable of implementing the methods and various possible designs of the above-mentioned fifth aspect, and the above-mentioned device capable of implementing the various methods and various possible designs of the above-mentioned sixth aspect. The function of the device.
  • a processor configured to be coupled with a memory, and configured to execute any one of the foregoing first to sixth aspects or a method in any possible implementation manner thereof.
  • a chip in a seventeenth aspect, includes a processor and a communication interface.
  • the communication interface is used to communicate with external devices or internal devices.
  • the processor is used to implement the first, third, or fifth aspects described above. , Or any of its possible implementation methods.
  • the chip may further include a memory in which instructions are stored, and the processor is configured to execute instructions stored in the memory or instructions derived from other sources.
  • the processor is used to implement the first aspect, the third aspect, or the fifth aspect, or the method in any possible implementation manner thereof.
  • the chip can be integrated on the terminal.
  • a chip in an eighteenth aspect, includes a processor and a communication interface.
  • the communication interface is used to communicate with an external device or an internal device.
  • the processor is used to implement the second, fourth, or sixth aspect described above. The method in any aspect or any of its possible implementations.
  • the chip may further include a memory in which instructions are stored, and the processor is configured to execute instructions stored in the memory or instructions derived from other sources.
  • the processor is used to implement the above-mentioned second, fourth, or sixth aspect, or the method in any possible implementation manner thereof.
  • the chip can be integrated on the network device.
  • the terminal when the terminal detects that the link of any one of the multiple cells fails, or the link of any multiple cells of the multiple cells fails, it can be on the same resource (that is, the first resource) Send the first request information to the network device to inform the network device that there is a link failure of at least one cell among the L cells.
  • the terminal when the terminal detects that the link of any one of the multiple cells fails, or the link of any multiple cells of the multiple cells fails, it can be on the same resource (that is, the first resource) Send the first request information to the network device to inform the network device that there is a link failure of at least one cell among the L cells.
  • this embodiment of the application saves resource overhead.
  • Figure 1 is a schematic diagram of a communication system of the present application
  • Figure 2 is a schematic flowchart of a link failure recovery in a traditional solution
  • FIG. 3 is a schematic flowchart of a method for link failure recovery according to an embodiment of the present application
  • FIG. 4 is a schematic diagram of a method for link failure recovery according to a specific embodiment of the present application.
  • FIG. 5 is a schematic diagram of a method for link failure recovery according to another specific embodiment of the present application.
  • FIG. 6 is a schematic flowchart of a method for link failure recovery according to another embodiment of the present application.
  • FIG. 7 is a schematic diagram of a method for link failure recovery according to another specific embodiment of the present application.
  • FIG. 8 is a schematic flowchart of a method for link failure recovery according to another embodiment of the present application.
  • FIG. 9 is a schematic diagram of a method for link failure recovery according to an embodiment of the present application.
  • FIG. 10 is a schematic block diagram of an apparatus for link failure recovery according to an embodiment of the present application.
  • FIG. 11 is a schematic structural diagram of an apparatus for link failure recovery according to an embodiment of the present application.
  • FIG. 12 is a schematic block diagram of an apparatus for link failure recovery according to another embodiment of the present application.
  • FIG. 13 is a schematic structural diagram of a link failure recovery apparatus according to another embodiment of the present application.
  • FIG. 14 is a schematic diagram of a link failure recovery apparatus according to a specific embodiment of the present application.
  • 15 is a schematic diagram of a link failure recovery apparatus according to another specific embodiment of the present application.
  • FIG. 16 is a schematic diagram of a device for link failure recovery according to another specific embodiment of the present application.
  • FIG. 17 is a schematic diagram of a link failure recovery apparatus according to another specific embodiment of the present application.
  • GSM global system for mobile communications
  • CDMA code division multiple access
  • WCDMA broadband code division multiple access
  • GPRS general packet radio service
  • LTE long term evolution
  • FDD frequency division duplex
  • TDD LTE Time division duplex
  • UMTS universal mobile telecommunication system
  • WiMAX worldwide interoperability for microwave access
  • the terminal equipment in the embodiments of the present application may refer to user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile equipment, user terminal, terminal, wireless Communication equipment, user agent or user device.
  • the terminal device can also be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), and a wireless communication Functional handheld devices, computing devices, or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in the future 5G network or future evolution of the public land mobile network (PLMN) Terminal equipment, etc., this embodiment of the present application does not limit this.
  • SIP session initiation protocol
  • WLL wireless local loop
  • PDA personal digital assistant
  • PLMN public land mobile network
  • the network device in the embodiment of the application may be a device used to communicate with a terminal device.
  • the network device may be a global system for mobile communications (GSM) system or code division multiple access (CDMA)
  • GSM global system for mobile communications
  • CDMA code division multiple access
  • the base transceiver station (BTS) in the LTE system can also be the base station (NodeB, NB) in the wideband code division multiple access (WCDMA) system, or the evolved base station (evoled) in the LTE system.
  • NodeB, NB base station
  • WCDMA wideband code division multiple access
  • evoled evolved base station
  • NodeB eNB or eNodeB
  • it can also be a wireless controller in a cloud radio access network (CRAN) scenario
  • the network device can be a relay station, access point, vehicle-mounted device, wearable device, and future
  • the network equipment in the 5G network or the network equipment in the future evolved PLMN network, etc., are not limited in the embodiment of the present application.
  • the terminal device or the network device includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer.
  • the hardware layer includes hardware such as a central processing unit (CPU), a memory management unit (MMU), and memory (also referred to as main memory).
  • the operating system may be any one or more computer operating systems that implement business processing through processes, for example, Linux operating system, Unix operating system, Android operating system, iOS operating system, or windows operating system.
  • the application layer includes applications such as browsers, address books, word processing software, and instant messaging software.
  • the embodiments of the application do not specifically limit the specific structure of the execution subject of the methods provided in the embodiments of the application, as long as the program that records the codes of the methods provided in the embodiments of the application can be provided according to the embodiments of the application.
  • the execution subject of the method provided in the embodiment of the present application may be a terminal device or a network device, or a functional module in the terminal device or network device that can call and execute the program.
  • Computer-readable media may include, but are not limited to: magnetic storage devices (for example, hard disks, floppy disks, or tapes, etc.), optical disks (for example, compact discs (CD), digital versatile discs (DVD)) Etc.), smart cards and flash memory devices (for example, erasable programmable read-only memory (EPROM), cards, sticks or key drives, etc.).
  • various storage media described herein may represent one or more devices and/or other machine-readable media for storing information.
  • the term "machine-readable medium” may include, but is not limited to, wireless channels and various other media capable of storing, containing, and/or carrying instructions and/or data.
  • FIG. 1 is a schematic diagram of a communication system of the present application.
  • the communication system in FIG. 1 may include at least one terminal (for example, terminal 10, terminal 20, terminal 30, terminal 40, terminal 50, and terminal 60) and a network device 70.
  • the network device 70 is used to provide communication services for the terminal and access the core network.
  • the terminal can access the network by searching for synchronization signals, broadcast signals, etc. sent by the network device 70, so as to communicate with the network.
  • the terminal 10, the terminal 20, the terminal 30, the terminal 40, and the terminal 60 in FIG. 1 can perform uplink and downlink transmissions with the network device 70.
  • the network device 70 may send downlink signals to the terminal 10, the terminal 20, the terminal 30, the terminal 40, and the terminal 60, and may also receive the uplink signal sent by the terminal 10, the terminal 20, the terminal 30, the terminal 40, and the terminal 60.
  • the terminal 40, the terminal 50, and the terminal 60 can also be regarded as a communication system, and the terminal 60 can send downlink signals to the terminal 40 and the terminal 50, and can also receive uplink signals sent by the terminal 40 and the terminal 50.
  • embodiments of the present application may be applied to a communication system including one or more network devices, and may also be applied to a communication system including one or more terminals, which is not limited in this application.
  • Control resource set (CORESET)
  • the network device can configure one or more resource sets for the terminal device to send a physical downlink control channel (PDCCH).
  • the network device can send a control channel to the terminal device on any control resource set corresponding to the terminal device.
  • the network device also needs to notify the terminal device of other associated configurations of the control resource set, such as a search space set.
  • the control resource set in this application may be a CORESET or control region (control region) defined by the 5G mobile communication system or an enhanced-physical downlink control channel (ePDCCH) set (set).
  • the time-frequency position occupied by the PDCCH can be referred to as the downlink control region.
  • the PDCCH is always located in the first m (m possible values of 1, 2, 3, and 4) symbols in a subframe. It should be noted that the positions of E-PDCCH and R-PDCCH in LTE are not in the first m symbols.
  • the downlink control area can be flexibly configured by RRC signaling through control resource set (CORESET) and search space set (search space set):
  • CORESET control resource set
  • search space set search space set
  • the control resource set can be configured with PDCCH or control channel element (control channel element, CCE) frequency domain position, time domain continuous symbol number (the maximum value is 3) and other information;
  • control channel element control channel element, CCE
  • the search space set can be configured with PDCCH detection period and offset, starting symbol in a time slot and other information.
  • the search space set can be configured with a PDCCH cycle as 1 time slot, and the time domain start symbol is symbol 0, then the terminal device can detect the PDCCH at the start position of each time slot.
  • the quasi-co-site/quasi-co-location QCL hypothesis information may also be referred to as QCL information, and the QCL information is used to assist in describing the terminal device receiving beamforming information and the receiving process.
  • the target reference signal can generally be a demodulation reference signal (DMRS), a channel state information reference signal (CSI-RS) ), etc.
  • CSI-RS channel state information reference signal
  • the reference signal or source reference signal to be cited may generally be CSI-RS, tracking reference signal (tracking reference signal, TRS), synchronous signal broadcast channel block (synchronous signal/PBCH block, SSB), etc.
  • Spatial relation Spatial related information is used to assist in describing the beamforming information on the transmitting side of the terminal device and the transmission process.
  • the spatial relation information is used to indicate the spatial transmission parameter relationship between the two reference signals.
  • the target reference signal can generally be DMRS, SRS, etc.
  • the reference signal or source reference signal to be quoted can generally be CSI-RS, SRS, SSB etc.
  • 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 index.
  • 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 index.
  • the spatial characteristic parameters include one or more of the following parameters:
  • Angle of incidence AoA
  • dominant (dominant) incidence angle AoA average incidence angle
  • power angular spectrum PAS
  • exit angle angle of departure, AoD
  • main exit angle Average exit angle, power angle spectrum of exit angle
  • terminal equipment transmit beamforming terminal equipment receive beamforming, spatial channel correlation, network equipment transmit beamforming, network equipment receive beamforming, average channel gain, average channel delay (average delay), delay spread (delay spread), Doppler spread (Doppler spread), Doppler shift (doppler shift), spatial reception parameters (spatial Rx parameters), etc.
  • These spatial characteristic parameters describe the spatial channel characteristics between the antenna ports of the source reference signal and the target reference signal, and help the terminal device to complete the receiving-side beamforming or receiving process according to the QCL information. It should be understood that the terminal device can receive the target reference signal according to the received beam information of the source reference signal indicated by the QCL information; these spatial characteristic parameters also help the terminal device to complete the transmit-side beamforming or transmission processing process according to the spatial related information. It should be understood that the terminal device may transmit the target reference signal according to the transmit beam information of the source reference signal indicated by the spatial related information.
  • the network device may indicate the demodulation reference signal of the PDCCH or the physical downlink shared channel (physical downlink shared channel, PDSCH) and the terminal device One or more of the previously reported multiple reference signal resources satisfy the QCL relationship.
  • the reference signal may be a CSI-RS.
  • each reported CSI-RS resource index corresponds to a transmit and receive beam pair established during the previous measurement based on the CSI-RS resource. It should be understood that the receiving beam information of two reference signals or channels that satisfy the QCL relationship is the same, and the terminal device can infer the receiving beam information of receiving the PDCCH or PDSCH according to the reference signal resource index.
  • Network equipment can configure one or more types of QCL for terminal equipment at the same time, such as QCL type A+D, C+D:
  • QCL types A Doppler shift, Doppler spread, average delay, delay spread
  • scenario applicable to QCL hypothesis in this application may also be two reference signals, or further or an association relationship between transmission objects.
  • TCI Transmission configuration indicator
  • a TCI state may include one or two reference signals that are referenced, and the 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, and spatial Rx parameter ⁇ .
  • the TCI status includes QCL information, or the TCI status is used to indicate QCL information.
  • Synchronous signal broadcast channel block (synchronous signal/PBCH block, SS/PBCH block)
  • the SS/PBCH block can also be called SSB.
  • PBCH is an abbreviation of physical broadcast channel.
  • the SSB includes at least one of a primary synchronization signal (primary synchronization signal, PSS), a secondary synchronization signal (secondary synchronization signal, SSS), and a PBCH. It is mainly used for cell search, cell synchronization, and signals carrying broadcast information.
  • a beam is a communication resource, and different beams can be considered as different communication resources. Different beams can send the same information or different information.
  • the beam may correspond to at least one of time domain resources, space resources, and frequency domain resources.
  • multiple beams with the same or the same type of communication characteristics may be regarded as one beam, and one beam may include one or more antenna ports for transmitting data channels, control channels, sounding signals, and the like.
  • the transmitting beam may refer to the distribution of signal strength in different directions in space after a signal is transmitted through the antenna;
  • the receiving beam may refer to the signal strength distribution of the wireless signal received from the antenna in different directions in space.
  • the beam may be a wide beam, a narrow beam, or other types of beams.
  • the beam forming technology may be beamforming technology or other technical means, which is not limited in this application.
  • the beamforming technology Beamforming
  • Beamforming can achieve higher antenna array gain by oriented in a specific direction in space.
  • the beam can be divided into the transmitting beam and the receiving beam of the network device, and the transmitting beam and the receiving beam of the terminal.
  • the transmitting beam of the network device is used to describe the beamforming information on the receiving side of the network device, and the receiving beam of the network device is used to describe the beamforming information on the receiving side of the network device.
  • the transmitting beam of the terminal is used to describe the beamforming information on the transmitting side of the terminal, and the receiving beam of the terminal is used to describe the beamforming information on the receiving side.
  • beamforming technology includes digital beamforming technology, analog beamforming technology, and hybrid digital-analog beamforming technology.
  • the analog beamforming technology can be implemented by radio frequency.
  • a radio frequency link RF chain
  • communication based on analog beams requires the beams of the transmitter and receiver to be aligned, otherwise signals cannot be transmitted normally.
  • one or more antenna ports forming a beam may also be regarded as an antenna port set.
  • the beam can also be embodied by a spatial filter or a spatial domain transmission filter.
  • the beam can also be referred to as a "spatial filter”
  • the transmitting beam is referred to as a "spatial filter”.
  • Transmitting filter” and receiving beam are called “spatial receive filter” or "downstream spatial filter”.
  • the receiving beam of a network device or the transmitting beam of a terminal device may also be referred to as an "uplink spatial filter”
  • the transmitting beam of a network device or a receiving beam of a terminal device may also be referred to as a "downlink spatial filter”.
  • Optimal N beam pairs (Beam pair link, BPL) (a BPL includes the transmit beam of a network device and the receive beam of a terminal, or a BPL includes the transmit beam of a terminal and the receive beam of a network device) select.
  • BPL includes the transmit beam of a network device and the receive beam of a terminal
  • a BPL includes the transmit beam of a terminal and the receive beam of a network device
  • select For the terminal based on the beam scanning of the network device to realize the selection of the transmission beam of the network device and/or the receiving beam of the terminal, and the network device to realize the transmission beam of the terminal and/or the receiving beam of the network device based on the beam scanning of the terminal select.
  • the transmit beam may be a base station transmit beam or a terminal transmit beam.
  • the transmitting beam is a base station transmitting beam
  • the base station sends reference signals to the UE through different transmitting beams
  • the UE receives the reference signals sent by the base station through different transmitting beams through the same receiving beam, and determines the optimal base station based on the received signal Transmit the beam, and then feed back the optimal transmit beam of the base station to the base station so that the base station can update the transmit beam.
  • the UE When the transmitting beam is a terminal transmitting beam, the UE sends reference signals to the base station through different transmitting beams, and the base station receives the reference signals sent by the UE through different transmitting beams through the same receiving beam, and determines the UE's optimum based on the received signal Transmit the beam, and then feed back the UE's optimal transmit beam to the UE so that the UE can update the transmit beam.
  • the foregoing process of transmitting reference signals through different transmit beams may be called beam scanning, and the process of determining the optimal transmit beam based on the received signal may be called beam matching.
  • the receiving beam may be a base station receiving beam or a terminal receiving beam.
  • the receiving beam is a base station receiving beam
  • the UE sends a reference signal to the base station through the same transmitting beam.
  • the base station uses different receiving beams to receive the reference signal sent by the UE, and then determines the optimal receiving beam of the base station based on the received signal, so as to The receive beam is updated.
  • the receiving beam is the receiving beam of the UE, the base station sends the reference signal to the UE through the same transmitting beam, and the UE uses different receiving beams to receive the reference signal sent by the base station, and then determines the UE's optimal receiving beam based on the received signal to correct The UE's receive beam is updated.
  • the network device will configure the type of reference signal resource set for beam training.
  • the repetition parameter configured for the reference signal resource set is "on"
  • the terminal device assumes the reference signal resource set
  • the reference signal in the reference signal is transmitted using the same downlink spatial filter, that is, using the same transmit beam transmission; in this case, in general, the terminal device will use different receive beams to receive the reference signal in the above reference signal resource set, and train The best receiving beam of the terminal device.
  • the terminal device can report the channel quality of the best N reference signals measured by the UE.
  • the terminal device When the repetition parameter configured for the reference signal resource set is "off", the terminal device does not assume that the reference signals in the reference signal resource set use the same downlink spatial filter for transmission, that is, it does not assume that the network device uses the same transmit beam Transmit the reference signal. At this time, the terminal equipment selects the best N beams in the resource set by measuring the channel quality of the reference signal in the set and feeds it back to the network equipment. Generally, at this time, the terminal equipment uses it in this process The same receiving beam.
  • the network device can configure one or more downlink/uplink bandwidth regions for the terminal device.
  • the BWP is composed of continuous PRBs in the frequency domain, and the BWP is a subset of the bandwidth of the terminal device.
  • the minimum granularity of the BWP in the frequency domain is 1 PRB.
  • the system may configure one or more bandwidth regions for the terminal device, and the multiple bandwidth regions may overlap in the frequency domain.
  • a terminal device can only have one active BWP at a time, and the terminal device can only receive data/reference signals or send data/reference signals on the active BWP (active BWP).
  • a specific BWP may also be a bandwidth set on a specific frequency, or a set composed of multiple RBs.
  • Reference signal configured to detect link failure and restore link failure
  • the network equipment needs to configure the terminal equipment with a reference signal resource set for beam failure detection (for example, beam failure detection RS resourceconfig or beam failure detection RS or failure detection resources) and used to restore the terminal equipment and Reference signal resource collection (candidate beam RS list or candidate beam RS identification resource or beam failure candidate beam resource or candidate beam identification RS) of the network equipment link (also called candidate reference signal resource collection).
  • a reference signal resource set for beam failure detection for example, beam failure detection RS resourceconfig or beam failure detection RS or failure detection resources
  • Reference signal resource collection candidate beam RS list or candidate beam RS identification resource or beam failure candidate beam resource or candidate beam identification RS
  • the reference signal used to detect link failure can also be indicated implicitly.
  • the reference signal associated in the TCI indicating the PDCCH is used as the reference signal for detecting link failure.
  • the reference signal is a reference that satisfies the QCL relationship with the DMRS of the PDCCH. Signal, and is a reference signal sent periodically.
  • the RS in the beam failure detection RS set and the demodulation reference signal of the downlink physical control channel PDCCH satisfy the QCL relationship or use the same TCI state as the PDCCH.
  • the channel quality information of some or all reference signals in the set such as reference Signal receiving power (reference signal receiving power, RSRP), channel quality indicator (channel quality indicator, CQI), block error ratio (block error ratio, BLER), signal to interference plus noise ratio (signal to interference plus noise ratio, SINR) If the signal-to-noise ratio (signal noise ratio, SNR), etc.) is lower than a predetermined threshold, it is determined as a communication link failure.
  • the lower than the predetermined threshold may be W consecutive times lower than the predetermined threshold or W times lower than the predetermined threshold within a certain period of time.
  • the predetermined threshold may be the same as the radio link failure OOS (out of sync) threshold.
  • CA Carrier aggregation
  • the bandwidth requirements of 3GPP can be met.
  • Each carrier in multi-carrier aggregation can be called "CC", and each carrier is composed of one or more physical resource blocks (PRB), and each carrier can have its own corresponding physical downlink control channel (physical downlink control channel (PDCCH), scheduling the physical downlink control channel (PDSCH) of each CC; there may be no PDCCH, but the PDSCH is scheduled through the PDCCH on other CCs.
  • a terminal can also be called a component carrier, a component carrier, or a component carrier.
  • Primary cell Primary cell (primary cell, PCell):
  • PCell is the cell where the CA terminal resides, and the CA terminal corresponds to a physical uplink control channel (PUCCH) channel.
  • PUCCH physical uplink control channel
  • Secondary primary cell primary secondary Cell, PSCell
  • the PSCell is a special secondary cell on the secondary base station (secondary eNodeB, SeNB) that the master base station (master eNodeB, MeNB) configures to the DC UE through RRC connection signaling.
  • Secondary cell secondary cell, SCell
  • the SCell refers to a cell configured to the CA terminal through RRC connection signaling. It works on the SCC (secondary carrier) and can provide the CA terminal with more radio resources.
  • the SCell can have only downlink or both uplink and downlink.
  • the SpCell refers to the PCell of the master cell group (MCG) or the PSCell of the secondary cell group (SCG); otherwise, as in the CA scenario, the SpCell refers to the PCell.
  • MCG master cell group
  • SCG secondary cell group
  • MCG refers to the primary cell group in which the cell serving the terminal is located in the primary base station.
  • a group of serving cells associated with the MeNB includes a PCell and one or more SCells.
  • SCG means that the group of the cell serving the UE in the secondary base station is the secondary cell group. In the dual link mode, it includes PSCells and zero or more SCells.
  • the MeNB is the base station to which the cell where the DC terminal resides.
  • SeNB is another base station configured by MeNB to DC UE through RRC connection signaling.
  • communication failure may also be referred to as communication link failure, communication link failure, link failure, link failure, communication failure, beam failure, beam failure, etc.
  • the communication failure may mean that the signal quality of the reference signal used for beam failure detection of the PDCCH is less than or equal to a preset threshold.
  • the terminal device needs to select reference signal resources with channel quality information (such as RSRP, RSRQ, CQI, SINR, etc.) higher than a predetermined threshold from the set of candidate reference signal resources to restore the communication link.
  • channel quality information such as RSRP, RSRQ, CQI, SINR, etc.
  • the predetermined threshold can be configured by a network device.
  • beam failure detection RS is used for the terminal device to detect the channel quality of a certain transmit beam of the network device, and the transmit beam is the beam used when the network device communicates with the terminal device.
  • candidate beam identification RS is used by the terminal device to initiate a link reconfiguration reference signal set after determining that the transmission beam of the network device has a communication link failure.
  • communication failure recovery can also be referred to as recovering communication between network equipment and terminal equipment, 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 names of the reference signal resource set used for beam failure detection and the reference signal resource set used to restore the link between the terminal device and the network device may also have other names, and this application will not make specifics about this. limited.
  • the communication failure recovery request information may also be referred to as communication failure recovery request information, link failure recovery request information, link failure recovery request information, beam failure recovery request information, beam failure recovery request information, communication link Failure recovery request information, communication link failure recovery request information, link reconfiguration request information, reconfiguration request information, etc. It should be understood that the communication failure recovery request information in the embodiment of the present application may be referred to as the first request information and or the second request information and or the third request information.
  • the communication failure recovery response information may also be referred to as communication failure response information, beam failure recovery response information, beam failure response information, communication link failure recovery response information, communication link failure response information, communication link 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, chain Road failure response information, communication failure recovery response information, communication failure response information, reconfiguration response information, etc.
  • the communication failure recovery response information may be referred to as response information for short.
  • the communication failure recovery request may refer to sending a signal on the resource used to carry the communication failure recovery request
  • the communication failure recovery response information may refer to the control resource used to send the communication failure recovery response.
  • the communication failure recovery response information may also be DCI scrambled by other information (such as BFR-RNTI scrambled DCI)
  • the communication failure recovery response information may also be data scheduled by the aforementioned DCI
  • the communication failure recovery response information It may also be an ACK of data scheduled by the above-mentioned DCI.
  • the communication failure recovery response information may also be one of the following information: DCI scrambled by the cell radio network temporary identifier C-RNTI, modulation and coding method, DCI scrambled by the cell-specific wireless network temporary identifier MCS-C-RNTI, dedicated search
  • the downlink control information DCI in the space, the DCI scrambled by the temporary ID RNTI of the private wireless network, the DCI scrambled by the temporary ID RA-RNTI of the random access wireless network, the DCI containing the preset state value, and the DCI containing the transmission configuration indication TCI information ,
  • the embodiment of the present application does not limit this.
  • the link recovery failure of a certain cell can be understood as the terminal device no longer sending the first request information and/or the second request information and/or the third request information of the cell for drinking high, and it can also be understood Stopping the link failure recovery clock timing can also be understood as stopping the link failure recovery counter counting.
  • the link recovery failure of a certain cell can be understood as the timeout of the link failure recovery clock corresponding to the cell, and or the link failure recovery counter has exceeded the maximum number of times or reached the maximum number of times and the response information of the cell is not received.
  • the link failure recovery counter is used to count the number of times the link failure recovery request information is sent.
  • the media access control (MAC) layer of the terminal device maintains a link failure recovery timer (beam failure recovery timer) and a link failure recovery counter (beam failure recovery counter).
  • the link failure recovery timer is used to control the entire link failure recovery time.
  • the link failure recovery counter is used to limit the number of times the terminal device sends link failure recovery requests. When the link failure recovery counter reaches the maximum value, the The terminal device considers that the link failure recovery is unsuccessful and stops the link failure recovery process.
  • the recovery time of the recovery timer and the count value of the recovery counter may be configured by the network device, or may be preset values.
  • the successful link recovery of a certain cell can be understood as the terminal device detecting the response information of the cell.
  • the time unit may be one or more radio frames, one or more subframes, one or more time slots, and one or more mini slots defined in the LTE or 5G NR system.
  • One or more orthogonal frequency division multiplexing (OFDM) symbols, etc. may also be a time window formed by multiple frames or subframes, such as a system information (SI) window.
  • SI system information
  • the interaction between the terminal device and the network device is usually corresponding, that is, the terminal device sends information, and the corresponding network device will also receive the information; or the network device sends information, correspondingly, the terminal device Will also receive this information.
  • the physical resources used by the network device and the terminal device to send and receive information, or the applied rules such as period, priority order, etc. are also corresponding, which are not limited by the embodiments of the present application.
  • Figure 2 shows a schematic flowchart of a link failure recovery in a traditional solution.
  • the terminal detects the working status of the current link. For example, the terminal can detect that the current link fails.
  • the link in this application can be understood as a "beam”, that is, the terminal fails to use the current beam for signal transmission.
  • the terminal device when the terminal device determines that the channel quality information of all or part of the reference signal in the beam failure detection RS or beam failure detection RS set is less than or equal to the second preset threshold, the terminal device can determine that the terminal device and the network device The link between the two has failed.
  • the manner in which the terminal device determines that the link between the terminal device and the network device is faulty is not limited to the above examples, and may also be determined by other judgment methods, which is not limited in this application.
  • the terminal selects a new link, that is, the terminal selects a new beam.
  • the terminal device determines the reference signal (new identified beam) whose channel quality is greater than or equal to the first preset threshold according to the channel quality information of the candidate reference signal set (candidate beam identification RS); the determination process here may be to measure the The channel quality information of the candidate reference signal set is determined.
  • the terminal After selecting a new link, the terminal sends a scheduling request (scheduling request, SR) to the network device, where the SR is used to request the network device to configure uplink resources.
  • SR scheduling request
  • the network device After the network device receives the SR, since it cannot know how much uplink data needs to be transmitted by the terminal, the network device sends downlink control information to the terminal.
  • the downlink control information is used to schedule the transmission buffer status report (BSR). Uplink resources.
  • the terminal sends a BSR on the uplink resource indicated by the downlink control information, where the BSR is used to indicate the amount of data to be sent by the terminal.
  • the network device sends resource allocation information to the terminal according to the amount of data to be sent by the terminal, where the resource allocation information is used to indicate resources for transmitting PUSCH.
  • the terminal sends the PUSCH on the resource indicated by the resource allocation information, and the PUSCH carries the downlink information and the index of the cell where the link failure occurs.
  • the terminal determines that the link failure recovery is successful.
  • the link failure recovery fails, which causes the link communication to be interrupted and the communication efficiency decreases.
  • FIG. 3 shows a schematic flowchart of a method for link failure recovery according to an embodiment of the present application.
  • the terminal sends first request information on a first resource, where the first request information is used to indicate a link failure of at least one cell among L cells, L>1, and L is an integer.
  • the network device receives the first request information.
  • the terminal detects that the link of any one of the L cells has failed, or the link of any multiple of the L cells has failed, all of them can send to the network on the same resource (that is, the first resource).
  • the device sends the first request information to inform the network device that there is a link failure of at least one cell among the L cells.
  • this embodiment of the application saves resource overhead.
  • each of the L cells may correspond to a network device, or some of the cells of the L cells may correspond to one network device, or the L cells may correspond to only one network device. This application There is no restriction on this.
  • the value of L may be pre-appointed by the network device and the terminal (for example, pre-defined through a protocol), indicated by the network device, or reported by the terminal capability.
  • BFRQ1 may be information in the same format as a scheduling request (SR).
  • the terminal may trigger step 301 in the case where it is determined that at least one cell link failure exists in the L cells.
  • the terminal may also trigger step 301 when it is determined that there is at least one cell link failure in the L cells, and new reference signal information for restoring the link of the at least one cell is identified.
  • the first resource may be a PUCCH resource, a PRACH resource, or a PUSCH resource.
  • the first resource may be a resource dedicated to sending beam failure recovery request information, or a resource used for other functions, such as a resource for reporting beam information (L1-RSRP or L1-SINR related information) during beam management, or In the CSI acquisition phase, resources of CQI related information (such as one or more of PMI, RI, CQI, CRI, etc.) are reported.
  • the first resource may be a periodic resource or a semi-persistent resource.
  • the terminal sends second request information on the second resource, where the second request information is used to indicate cell information of M cells whose links among the L cells fail, where M ⁇ 1, and M is an integer.
  • the network device receives the second request information.
  • the second request information is used to indicate the cell identities of the M cells where the link fails in the L cells, so that the network device can learn the specific link failure in the L cells according to the second request information Information about the cell.
  • the second request information can be used to indicate the cell information of any cell in which the link of the L cells fails, so that the request information of each cell occupies different resources to send the first Second, request information, saving resource overhead.
  • the second request information can be used to indicate the cell information of multiple cells where the link fails. In this way, the request information of each of the M cells is sent separately or in time sharing. The application embodiment saves the recovery time delay.
  • the second request information may display the cell identities of the M cells whose links among the L cells fail, for example, directly carry the cell identities.
  • the second request information can also implicitly indicate the cell identities of the M cells whose links among the L cells fail.
  • the network device configures the association relationship between the cells and the second resource, and the terminal device sends the second request information by selecting The second resource of the network device implicitly informs the network device which cell the link failure occurs (for example, the first cell is associated with the second resource a, the second cell is associated with the second resource b, and the terminal device finds that the second cell has a link failure After that, the second request information is sent through the second resource b, which can implicitly indicate that the second cell has a link failure).
  • the second request information may be "BFRQ2".
  • the cell information may include cell identification and/or reference signal information used to restore the cell.
  • the cell information of the M cells may include the cell identities of the M cells and/or N first reference signal information used to restore the M cells.
  • the first reference signal for restoring one cell may be one or multiple, or the first reference signal for restoring multiple cells may be the same, which is not limited in this application.
  • the cell identity and the first reference signal information may have a mapping relationship, so that in the case where the cell information of M cells only includes the cell identities of M cells, the network device can determine the corresponding first reference according to the identity of the M cell Signal, or in the case where the cell information of M cells only includes N first reference signals, the network device may determine the corresponding cell identity according to the N first reference signals.
  • the cells of the M cells may include the identity of the i-th cell and the first reference signal information for restoring the i-th cell; otherwise, the cell information of the M cells includes the identity of the i-th cell, and may also include not restoring the i-th cell.
  • the state information of the reference signal of the i cell that is, the terminal does not recognize the reference signal information used to restore the i-th cell.
  • the second resource may be a PUCCH resource, a PUSCH resource, or a PRACH resource.
  • the “reference signal information” in the embodiment of the present application may be the “beam” described above, or may also be quasi-collocation (QCL) information.
  • QCL quasi-collocation
  • M may be greater than 1, and the terminal device may determine how many (one or more) failed cells are sent according to the size of the second resource and the number of cells where the link fails in the current network.
  • Community information when a link failure occurs in multiple cells, the terminal device can send the cell information of multiple cells where the link failure occurs, that is, the links of multiple cells can be restored at the same time, effectively reducing multiple cell links. The delay of road restoration.
  • M can only be equal to 1, that is, no matter how many cells have link failures
  • the second request information of the terminal device can only carry the cell of the cell where the link failure occurs.
  • Information, in this method, the second resource allocated by the network device can be smaller, saving resource overhead.
  • the terminal device can select which ones to send first in the second request information according to the following cell priorities Cell information of the cell where the link fails.
  • the priority of the cell can be determined by the sequence of link failures, for example, the cell with the link failure first has a higher priority than the cell with the link failure sent later; or the priority of the cell can be It is determined by the value of the identity of the cell. For example, the priority of a cell with a smaller identity is higher than that of a cell with a larger identity; or the priority of the cell can be determined by whether the cell belongs to a primary cell or a secondary cell.
  • the priority of the secondary cell is high; or the priority of the cell can be determined by the bandwidth (occupied frequency domain resources) of the cell, for example, a cell with a larger bandwidth has a higher priority than a cell with a smaller bandwidth; or the cell priority can be It is determined by the number of cells that use the same QCL information or satisfy the QCL relationship QCLed with the cell. For example, a cell that uses more information about the same QCL has a higher priority than a cell that uses less information about the same QCL. For example, the QCL information of the PDCCH of cell 1 and 2. If the cells are the same, the QCL information of the PDCCH of cell 2 is not the same as that of the cell, then the priority of cell 1 is higher than the priority of cell 2.
  • the terminal may detect the response information of the M cells, and send the third request information according to the detection result.
  • each cell performs link recovery according to the second request information.
  • the network device receives the second request information of a certain cell (for example, the j-th cell)
  • the network device corresponding to the j-th cell can feed back the response information of the second request information to the terminal. If the terminal device receives According to the response information of the second request information, it is considered that the link recovery is successful. If the terminal device sends the second request information of a certain cell (for example, the i-th cell), the network device does not receive the second request information of the i-th cell, or the network device receives the request information and sends the second request information.
  • the terminal device can resend the cell information of the i-th cell until the maximum number of transmissions of the cell information exceeds the preset value or the i-th If the recovery time of the cell exceeds the preset duration, it is considered that the link of the i-th cell has not recovered successfully.
  • the terminal does not detect the response information of the second request information corresponding to the i-th cell, the terminal sends to the network device the cell identity of the i-th cell and/or the second cell used to restore the i-th cell.
  • the network device continues to restore the link of the i-th cell.
  • the terminal detects the response information of the second request information corresponding to the j-th cell
  • the terminal sends the third request information including the confirmation information of the j-th cell to the network device, so that the network device can know the j-th cell.
  • the link of the cell is successfully restored, so that the second resource can be released to avoid resource waste, or when the network equipment or the M cells have successfully restored the link, the second resource can be released in time (it can be configured to transmit other information, or Released to others for transmission of uplink data or signals).
  • the terminal will send the third request information whether it detects or does not detect the response information of the second request information corresponding to a certain cell.
  • the terminal may also continue to send the request information to restore the cell chain. road. For example, the terminal may continue to send request information until the link of the corresponding cell is successfully restored, or the number of times the terminal has sent request information (of the cell) exceeds a preset value (such as the maximum number of transmissions) and or the time for the terminal link failure recovery Exceeds the preset duration (for example, the link failure recovery timer expires).
  • a preset value such as the maximum number of transmissions
  • the time for the terminal link failure recovery Exceeds the preset duration (for example, the link failure recovery timer expires).
  • the response information is still not received; or except for the successfully restored SCell, all other beam failure recovery corresponding to the SCell .
  • the BFR timer expires, the BFRQ2 resource is released (deactivate).
  • the UE can successfully receive the response information of the i-th cell (it can be considered that the link failure recovery of the i-th cell is successful), the link failure recovery timer of the cell can be stopped.
  • the request information can be understood as cell information.
  • the second resource when it is determined that the links of all the cells indicated in the first request information or the second request information are successfully restored, the second resource may be released; or when it is determined that a part of all the cells indicated in the first request information or the second request information When the link recovery succeeds and the remaining cell link recovery fails, the second resource may be released; or when the UE determines that the link recovery of all cells indicated in the first request information or the second request information fails, the second resource may be released.
  • the successful link recovery of the cell can mean that the response information of the cell is received
  • the link recovery failure of the cell can mean that the request information of the cell is greater than or equal to the maximum number of times and the response information of the cell is not received and or the cell is restored.
  • the link time exceeds the preset duration.
  • the terminal device sends the third request information only when the response information of at least one of the M cells is not detected, otherwise the UE will not send the third request information.
  • first reference signal information and the second reference signal information may be different, that is, the first reference signal information for a certain cell (for example, the first cell) cannot recover the first cell, and a new Identify the second reference signal information to recover the first cell.
  • i may be the same as the value of j, that is, the embodiment of the present application provides feedback conditions for the same cell in different scenarios where the link recovery succeeds or fails.
  • the i-th cell or the j-th cell may be any one of the M cells.
  • the third request information may be "RE-BFRQ2", and may also refer to retransmission information of the second request information.
  • the confirmation information of the j-th cell may include the cell identity (cell ID) and/or the confirmation identity (confirm) of the j-th cell.
  • the third request information includes the cell identifier of the cell whose link recovery fails among the M cells and the second reference signal information used to recover the cell whose link recovery fails, and the link among the M cells Confirmation information of the successful recovery cell.
  • the third request information includes the cell identifier of the i-th cell whose link recovery fails in the M cells and the second reference signal information used to restore the i-th cell, and the link in the M cells Confirmation information of the j-th cell that was restored successfully.
  • the cell identifier of the cell where the link recovery failed and the second reference signal used to recover the cell where the link recovery failed may be carried in the same third request information as the confirmation information of the cell where the link recovery has succeeded, that is, indicating
  • the reference signal information for re-identification of the cell where the link recovery failed and the confirmation information indicating the successful cell recovery are sent in the same request message, which saves signaling overhead.
  • the third request information may include cell information of all or part of the M cells whose link recovery fails. It may also include the confirmation information of the cells in which all or part of the links are successfully restored among the M cells.
  • the terminal sends the first request information (BFRQ1) and the second request information BFRQ2, where BFRQ2 may include the cell identities of the M cells where the link fails and the first reference corresponding to each cell Signal information, cell ID1-reference signal information b1, cell ID2-reference signal information b2, cell ID3-reference signal information b3,..., cell IDM-reference signal information bM.
  • the third request information (RE-BFRQ2) may include the cell ID1-reference signal information b4, cell ID2-confirmation identifier, cell ID3-confirmation identifier...
  • the terminal may also receive response information of the first request information, where the response information of the first request information is used to indicate or activate the second resource.
  • the network device may also send response information of the first request information.
  • the response information of the first request information may be used to indicate the second resource allocated for the terminal, that is, the network device allocates resources for the terminal.
  • the second resource may be an aperiodic resource (or called a dynamic resource).
  • the network device determines whether to allocate the second resource according to whether there is a cell with a link failure in the current network (indicated by the first request information) If the network device receives the first request information, it can learn that there are cells in the current network that have link failures, and the network device can dynamically allocate second resources so that the terminal device can further report which cells have link failures, and Or, report the new link information (first reference signal information) of the cell where the link recovery failed. Since the link failure event is an emergency event, this method does not need to reserve periodic resources for sending link failure recovery request information in advance, which can effectively save resource overhead.
  • the response information of the first request information can also be used to activate a second resource, that is, a second resource originally allocated for the terminal.
  • the activation is triggered by the response information of the first request information.
  • the second resource of is a semi-persistent or a static resource (periodic).
  • the second resource may be a semi-static resource or a static resource (such as a physical resource) activated by the response information of the first request information or the downlink control information (DCI) signaling after the first request information.
  • Uplink shared channel physical uplink shared channel, PUSCH), physical uplink control channel (physical uplink control channel, PUCCH), or physical random access channel (physical random access channel, PRACH)).
  • the network device determines whether to activate the second resource according to whether there is a cell with a link failure in the current network (indicated by the first request information). If the network device receives the first request information, it can learn about the current network If there is a cell where a link failure occurs, the network device activates the second resource so that the terminal device can further report which cells have a link failure, and or, report the information of the new link of the cell that has recovered the link failure (first reference signal information ), if the link is restored successfully, the resource can be released in time.
  • the terminal device can continue to send the second request message on the resource until the link fails to recover successfully or the number of times the number of link failure recovery requests is sent reaches When the preset maximum value or the link failure recovery duration reaches the preset duration, the second resource can be released.
  • the retransmission information can be sent directly on the second resource instead of the resource allocated by the response information of the first request information. Can effectively reduce the recovery delay.
  • the second resource may be configured by higher layer signaling or system information, or may be a preset resource.
  • the second resource may be configured by the network device for the terminal, and sent to the terminal through high-level signaling or system information.
  • the second resource may also be pre-appointed by the network device and the terminal device, or set in advance by the terminal, which is not limited in this application.
  • the retransmission information can be sent directly on the second resource instead of the resource allocated by the response information of the first request information. It can effectively reduce the link recovery delay and improve the link recovery speed.
  • the second resource may also be a resource associated with the first resource.
  • the second resource may have a mapping relationship with the first resource, so that the terminal can determine the second resource when learning the first resource.
  • the association relationship between the first resource and the second resource may be configured by system information such as master information block (MIB) or system information block (system information block, SIB), or by radio resource control (radio Resource control (RRC) or media access control (media access control, MAC)-control element (CE) signaling configuration.
  • the system information or signaling may be sent before sending the first request information.
  • the configuration of the first resource and the second resource may also be configured through the foregoing system information or signaling.
  • the retransmission information can be sent directly on the second resource instead of the resource allocated by the response information of the first request information. It can effectively reduce the link recovery delay and improve the link recovery speed.
  • the network device can configure multiple resources for the terminal to transmit the first request information, and configure multiple resources for the terminal to transmit the second request information, and the terminal can use the multiple resources to transmit the first request information.
  • One or more of the resources in is selected as the first resource, and one or more of the resources used to transmit the second request information can also be selected as the second resource.
  • the plurality of resources for transmitting the first request information and the plurality of resources for transmitting the second request information may be configured by the aforementioned system information such as MIB or SIB, or configured by signaling such as RRC or MAC-CE. .
  • the second resource may also be a resource associated with the first request information.
  • the network device can be configured through system information such as MIB or SIB, or through RRC or MAC-CE signaling, multiple resources for sending the first request information and multiple resources for sending the second request information, And the association relationship between the plurality of resources for sending the first request information and the plurality of resources for sending the second request information, and the terminal may select one of the plurality of resources for transmitting the first request information as the first resource , You can also select one from multiple resources used to transmit the second request information as the second resource.
  • Each first resource may be associated with one or more second resources, and the second resources associated with each first resource may be of different sizes. In which first resource the terminal device sends the first request information, the terminal device sends the second request information on the second resource associated with the first resource that sends the first request information.
  • the terminal may send the third request information on the second resource.
  • the terminal can multiplex the resource for sending the second request information to send the third request information without waiting for the response information of the first request information to allocate resources to send the second request information, thereby saving the time of resource allocation.
  • the overall Improved link recovery speed is also provided.
  • the resource occupied by the third request information and the same second resource occupied by the second request information can be understood as the resource carrying the second request information and the resource carrying the third request information are both a certain period configured by the network device
  • a resource or a semi-periodic resource can also be understood as a resource carrying the second request information and a resource carrying the third request information are the repetition of the same frequency domain resource on different time units.
  • the resources occupied by the third request information and the resources occupied by the second request information may also be resources at different positions in the same resource block.
  • sending the third request information by multiplexing the resource for sending the second request information by the terminal can be understood as sending the third request information by using the static or semi-static (semi-persistent or semi-static) resource for sending the second request information.
  • the terminal releases the second resource when detecting all the response information of the M cells.
  • the terminal may release the second resource when all the M cells are successfully restored. For example, when the terminal detects the response information of the second request information corresponding to each of the M cells, it can determine that all the M cells are successfully restored. Or, when the terminal detects the response information of the second request information corresponding to a part of the cells in the M cells, and the response information of the third request information corresponding to another part of the cells, it determines that all the M cells are successfully restored. Or when the terminal detects the response information of the third request information of each of the M cells, it determines that all the M cells are successfully restored.
  • the cell recovery failure means that the number of times that the terminal device sends the cell's link failure recovery request information exceeds the preset value (maximum value), and or, if the link recovery time of the cell exceeds the preset time, the cell link is considered to be recovered failure.
  • the successful recovery of the cell means that the terminal device receives the link failure recovery response information of the cell.
  • the terminal when the terminal detects the response information of the M cells, at least one cell's response information is not received, the terminal may resend the first request information on the fourth resource, and receive the re-sent first request information.
  • the response information of a request information, the response information of the re-sent first request information is used to indicate the third resource, so that the terminal can send the third request information on the third resource.
  • the third resource may be dynamically configured, for example, the network device indicates the third resource through the response information of the re-sent first request information.
  • the fourth resource may be the same as the first resource. That is to say, for the first request information, the resource for transmitting the first request information can be static, that is, the resource occupied by the first transmission of the first request information can also be used to retransmit the first request information. Reallocation saves time.
  • the cell information of the k-th cell in the M cells includes q pieces of first reference signal information, where k is a positive integer, and 1 ⁇ q ⁇ N.
  • the cell information of the k-th cell in the M cells may include multiple first reference signals, that is, the terminal may simultaneously send multiple reference signal information to jointly recover the k-th link failure. In order to further improve the probability of link recovery success.
  • the multiple reference signals are used to restore the link at the same time.
  • the terminal equipment reports multiple candidate reference signals to restore the reference signal of the link.
  • the multiple reference signals can be used to restore the link in time sharing, effectively reducing the problem caused by the retransmission of the second request information after a reference signal fails to restore. Delay and improve recovery efficiency.
  • the cell information of each of the M cells may include multiple first reference signal information, or the cell information of some of the M cells may include multiple first reference signal information. This is not limited.
  • the cell information of the k-th cell may also include the cell identity of the k-th cell.
  • the terminal detecting the response information of the second request information corresponding to the k-th cell among the M cells may specifically detect the response information of the second request information according to the priority order of the q reference signal information.
  • the priority of the q reference signal information may be determined by the terminal according to the success rate of restoring the link of the k-th cell or the quality of the reference signal, or may be determined according to the order of the ID of the reference signal information, or Determined according to the order in which reference signal information is reported.
  • the terminal can respectively detect the response information corresponding to the k-th cell, which can increase the probability of successful transmission of the response information of the second request information, that is, the probability of successful link failure recovery .
  • the priority of the reference signal information in this embodiment may be equivalent to the order of the success rate of restoring the link of the k-th cell or the order of the quality of the reference signal, or the order of the ID of the reference signal information, or With reference to the order in which the signal information is reported, the present invention may also have other description methods, which are not limited.
  • the terminal detecting the response information corresponding to the k-th cell according to each of the q reference signal information may be detected in the corresponding time window, which avoids detecting the second request according to a certain reference signal
  • the waiting time of the response information of the information is too long, resulting in a long link recovery delay, that is, the embodiment of the present application improves the efficiency of link recovery and reduces the link recovery time.
  • the response information of the second request information is detected according to the reference signal information sorted by the p-th priority, and 1 ⁇ p ⁇ q.
  • reference signal information detection response information sorted by the terminal according to the priority can be understood as the terminal according to the priority of the reference signal information.
  • the response information is detected in sequence.
  • the terminal detecting the response information of the second request information according to the priority order of the q reference signal information may be detecting the second request according to the previous reference signal information (for example, the p-th reference signal information)
  • the response information of the information fails, the response information of the second request information is detected according to the next reference signal information (for example, the p+1th reference signal information), so as to further save the signaling overhead.
  • the terminal may also detect the p-th reference signal information and the p+1-th reference signal information in the corresponding time window respectively.
  • BFRQ2 includes the identity of the kth cell (cell IDk) and reference signal information b1, b2, b3... for restoring the kth cell
  • the terminal uses the reference signal information in the first time window b1 detects the response information (BFRR2-b1) of the second request information. If BFRR2-b1 is not detected in the first time window, then the response information (BFRR2-b1) of the second request information is detected in the second time window according to the reference signal information b2. BFRR2-b2). If BFRR2-b1 is detected in the first time window, subsequent detection may not be required.
  • the terminal may receive the physical downlink shared channel (physical downlink shared channel, PDSCH) and the physical downlink control channel (physical downlink control) through the first reference signal information corresponding to the response information.
  • channel PDCCH
  • PUCCH Physical downlink shared channel
  • PUSCH Physical downlink control channel
  • sounding reference signal sounding reference signal
  • SRS sounding reference signal
  • channel state information channel state information
  • CSI channel state information
  • RS tracking reference signal
  • TRS tracking reference signal
  • the terminal detects the response information of the second request information according to a piece of reference signal information (for example, the p-th reference signal information), and if the response to the second request information is not detected, it still
  • the fifth request information may be sent to the network device, where the fifth request information is used to indicate that the response information of the second request information corresponding to the p-th reference signal is not detected, or is used to indicate that it is not corresponding to the p-th reference signal information.
  • the response information of the second request information corresponding to the p-th reference signal is detected in the p-th time window of.
  • the network device after receiving the fifth request information, the network device knows that the terminal device has not detected the response information of the second request information corresponding to the p-th reference signal information, and the network device can then base on the p+1-th reference signal information.
  • the reference signal information sends response information of the second request information. Otherwise, if the fifth request information is not received within the specified time, the network device may consider that the link is restored successfully, and the network device may no longer send response information of the second request information.
  • the start position of the p+1th time window corresponding to the p+1th reference signal information is located at Y time units after the fifth request information is sent, and X is greater than or equal to 0.
  • the above method can also be extended to the case where the terminal detects the response information of the second request information according to a set of reference signal information (including two or more reference signal information).
  • the fifth request information may be carried on the second resource, that is, the same resource as the second request information occupies, that is, the fifth request information may use semi-static resources to save resource overhead.
  • the fifth request information may be carried on the first resource, that is, the same resource as the first request information occupies, that is, the fifth request information may use semi-static resources to save resource overhead.
  • the fifth request information may have the same format as the first request information.
  • the terminal detects the response information of the second request information according to a piece of reference signal information (for example, the p-th reference signal information), and if a response to the second request information is detected, Confirmation information may be sent to the terminal device, where the confirmation information is used to indicate the detection of the response information of the second request information corresponding to the p-th reference signal, or to indicate the p-th time window corresponding to the p-th reference signal information
  • the response information of the second request information is detected on the above.
  • the network device can release the second resource in time or even if it stops sending the response information or learns that the link fails to recover successfully, this effectively saves resource overhead.
  • the confirmation information may carry the second resource, that is, occupy the same resource as the second request information, that is, the confirmation information may use semi-static resources to save resource overhead. If the response information of the second request information is not detected according to the p-th reference signal information, then (in the second time window) the response information of the second request information is detected according to the p+1-th reference signal information.
  • the maximum value W of the number of transmissions of the first request information may have a magnitude relationship with the maximum number X of the number of transmissions of request information for indicating cell information of a certain cell.
  • request information used to indicate cell information of a certain cell may include the foregoing second request information and/or the foregoing third request information.
  • W ⁇ X ⁇ L whether M is equal to 1 or greater than 1, may depend on the size of the second resource configured by the base station or the resource cell situation where the link fails.
  • This implementation manner can prevent the terminal device from frequently sending link failure recovery request information, which consumes electricity.
  • the second resource is a dynamic resource, X ⁇ W ⁇ X ⁇ L. In this way, it can be ensured that each cell with a link failure has a chance to send the second request information, or it can be guaranteed that each cell has the same chance to recover the link, and it can also avoid the terminal device from frequently sending link failure recovery request information.
  • FIG. 6 shows a schematic flowchart of a method for link failure recovery according to another embodiment of the present application.
  • the terminal sends first request information on the first resource, where the first request information is used to indicate that the link of at least one of the L cells fails, L>1, and L is an integer.
  • the network device receives the first request information.
  • the terminal when the terminal detects that the link of any one of the multiple cells fails, or the link of any multiple cells of the multiple cells fails, the terminal can report to the network on the same resource (ie, the first resource).
  • the device sends the first request information to inform the network device that there is a link failure of at least one cell among the L cells.
  • this embodiment of the application saves resource overhead.
  • the terminal sends M second request information, each of the M second request information is used to indicate cell information of the cell where the link fails, M ⁇ 1, and M is an integer.
  • each second request information can be used to indicate the cell information of a cell with a link failure, or it can be used to indicate the cell information of a cell with multiple link failures, which is not limited in this application, for ease of description In the following embodiments, unless otherwise specified, each second request information is used to indicate cell information of a cell where a link fails.
  • the cell information may include the cell identity of the corresponding link-failed cell and the first reference signal information used to restore the corresponding link-failed cell.
  • a piece of second request information corresponds to a cell identifier of a cell whose link fails and the first reference signal information used to restore the cell.
  • step 602 may specifically be that the terminal sends the M second request information according to the priority of the cell corresponding to each second request information in the M second request information.
  • the M second request information may be sent according to the priority of the cell corresponding to the second request information in chronological order. For example, the cell corresponding to the second request information has a higher priority and is sent first, or the cell corresponding to the second request information has a lower priority and is sent first.
  • the priority of cell ID1 is higher than the priority of cell ID2. Then the second request information corresponding to cell ID1 is preferentially transmitted.
  • the second request information corresponding to cell ID1 may also include reference signal information b1 (which can be used to restore the link of cell ID1), and then the second request information corresponding to cell ID2 is transmitted.
  • the second request information corresponding to the cell ID2 may also include reference signal information b2 (which may be used to restore the link of the cell ID2).
  • the priority of the cell can be determined by the sequence of link failures, for example, the cell with the link failure first has a higher priority than the cell with the link failure sent later; or the priority of the cell can be It is determined by the value of the identity of the cell. For example, the priority of a cell with a smaller identity is higher than that of a cell with a larger identity; or the priority of the cell can be determined by whether the cell belongs to a primary cell or a secondary cell.
  • the priority of the secondary cell is high; or the priority of the cell can be determined by the bandwidth (occupied frequency domain resources) of the cell, for example, a cell with a larger bandwidth has a higher priority than a cell with a smaller bandwidth; or the cell priority can be It is determined by the number of cells that use the same QCL information or satisfy the QCL relationship with the cell. For example, a cell that uses more information about the same QCL has a higher priority than a cell that uses less information about the same QCL. For example, the QCL information of the PDCCH of cell 1 and 2. The cells are the same, and the QCL information of the PDCCH of cell 2 is not the same as that of the cell, so the priority of cell 1 is higher than the priority of cell 2.
  • the terminal may detect the response information of the M second request information.
  • the third request information is sent, and the third request information is used to indicate the sth cell and/or Used to restore the second reference signal information of the s-th cell, s is a positive integer, and s ⁇ ⁇ 1, 2, ..., M ⁇ .
  • the terminal may detect the response information of the M second request information, and in the case where the response information of any second request information is not detected, it may send the corresponding third request information to restore the cell.
  • the third request information can reuse the second resource and send the third request information on the second resource, thereby saving resource overhead.
  • the resources occupied by the second request information corresponding to different cells in the M second request information may be different.
  • the terminal releases the second resource when detecting the response information of the sth second request information.
  • the terminal may release the second resource for sending the second request information.
  • the terminal resends the first request information on the fourth resource, and receives response information of the re-sent first request information.
  • the response information of the re-sent first request information is used to indicate the third resource.
  • the third request information is sent on the third resource.
  • the fourth resource is the same as the first resource.
  • the terminal When the terminal detects a link failure, it sends two request information to the network device.
  • the first request information is used to inform the network device that the link has failed
  • the second request information is used to indicate the information of the newly identified beam And/or the cell identity indicating link failure, where the first request information is sent periodically, and the second request information is sent aperiodically, so that compared to frequent periodic sending once, it is used to indicate link failure and
  • the newly identified request information for beam information can save resource overhead.
  • the first request information may be beam failure recovery request (BFRQ) 1, BFRQ1
  • the second request information may be BFRQ2. If the link still fails to recover after the second request, the terminal interrupts the transmission of the link, resulting in low signal transmission efficiency, and needs to resend the link failure recovery request to recover the link of the cell.
  • the reference signal information corresponding to the sth cell indicated by the sth second request information in the M second request information is q pieces of reference signal information, 1 ⁇ s ⁇ M, and k is an integer.
  • the resource configuration or indication method for sending the second request information and or the third request information can be the same as step 302, and the maximum transmission times of the first request information and or cell information can be the same as step 302, the second request corresponding to the s-th cell
  • the link failure recovery method when the information indicates multiple reference signals can be the same as step 302.
  • the response information for detecting the second request information includes: detecting the response information for the second request information corresponding to the s-th cell according to the priority order of the q reference signal information.
  • the detecting response information of the second request information corresponding to the s-th cell according to the priority order of the q reference signal information includes: according to the q indicated by the second request information in the p-th time window The p-th priority-ranked reference signal information of each reference signal information is detected, and the response information of the second request information is detected, and 1 ⁇ p ⁇ q.
  • the method further includes: after the response information of the second request information is not detected in the p-th time window according to the p-th priority ordering, according to the q reference information in the p+1-th time window The p+1-th priority-ranked reference signal information of the signal information is detected, and the response information of the second request information is detected.
  • the p+1-th time window is a time period later than the p-th time window.
  • the method further includes: after the response information of the second request information is not detected in the p-th time window according to the p-th priority ranking, after the response information of the second request information is not detected according to the p+1-th time window before the response information of the second request information is detected by the reference signal information sorted by priority, the fifth request information needs to be sent.
  • the fifth request information is used to indicate that the second request information is not detected in the p-th time window. Response information.
  • the network device after receiving the fifth request information, the network device knows that the terminal device has not detected the response information of the second request information corresponding to the p-th reference signal, and the network device can then base on the p+1-th reference signal.
  • the network device may consider that the link is restored successfully, and the network device may no longer send response information for the second request information.
  • the start position of the p+1th time window corresponding to the p+1th reference signal information is located at Y time units after the fifth request information is sent, and X is greater than or equal to 0.
  • the fifth request information is carried in the second resource.
  • the fifth request information may be carried in the first resource.
  • the fifth request information may have the same format as the first request information.
  • the method further includes: the terminal detects the response information of the second request information according to the p-th reference signal information, and if the response to the second request information is detected, it may also send the terminal
  • the device sends confirmation information, which is used to indicate that the response information of the second request information corresponding to the p-th reference signal is detected, or used to indicate that it is detected in the p-th time window corresponding to the p-th reference signal information Response information of the second request information.
  • the network device can release the second resource in time or even if it stops sending the response information or learns that the link fails to recover successfully, this effectively saves resource overhead.
  • the confirmation information may carry the second resource, that is, occupy the same resource as the second request information, that is, the confirmation information may use semi-static resources to save resource overhead. If the response information of the second request information is not detected according to the p-th reference signal information, then (in the second time window) the response information of the second request information is detected according to the p+1-th reference signal information (without sending the fifth Request information).
  • the sending the M second request information includes: sending the sth second request information on the second resource; wherein, the sending the third request information includes: sending the third request information on the second resource. Request information.
  • FIG. 8 shows a schematic flowchart of a method for link failure recovery according to another embodiment of the present application.
  • the terminal sends first request information, where the first request information is used to indicate the M cells and/or N first reference signal information where the link fails, where the N first reference signal information is used to restore the Links of M cells, M ⁇ 1, N ⁇ 1, and M and N are both integers.
  • first request information in the embodiment of the present application has the same meaning as the "second request information” in the embodiment shown in FIG. 3 to FIG. 6.
  • the terminal detects response information of the M cells.
  • the terminal When the terminal detects response information of the i-th cell among the M cells, it sends second request information, where the second request information is used to indicate the i-th cell and/or to restore the For the second reference signal information of the i-th cell, i is a positive integer, and 1 ⁇ i ⁇ M.
  • the terminal can also initiate the link recovery process again, thereby increasing the probability of successful link recovery and improving the efficiency of signal transmission.
  • the second request information may indicate other cells of the M cells except the above-mentioned partial cells and/or used to restore the corresponding The second reference signal information of the cell.
  • the second request information may also indicate the confirmation information of the cell that received the response information and/or the corresponding cell.
  • the terminal may send the first request information on the first resource.
  • the first resource may be an authorization-free PUSCH resource, or the first resource may be a PUCCH resource.
  • the PUCCH can be a resource dedicated to sending link failure recovery request information or multiplexing configured resources for other functions (such as transmitting L1-reference signal receiving power (RSRP), L1-signal PUCCH resources with information such as signal to interference plus noise ratio (SINR) and transmission of CQI, PMI and other information).
  • RSRP L1-reference signal receiving power
  • SINR signal to interference plus noise ratio
  • the first resource is PUSCH.
  • first resource may have the same meaning as the second resource in the embodiment shown in FIG. 3 to FIG. 6.
  • the terminal may also receive high-layer signaling, which is used to indicate the first resource.
  • the number of transmissions of the request information for at least one of the M cells and/or at least one of the N reference signal information used to indicate the link failure is less than or equal to a preset number of times Threshold or the number of times the network device is configured.
  • the first request information in step 801 may be repeatedly sent.
  • the second request information is the first request information that is repeatedly sent, which is used to request recovery of the link, but the cell that requests recovery each time may be different (such as The second recovery-requested cell is a subset of the first recovery-requested cell) and/or the reference signal used to recover a certain cell link may be different.
  • the number of times of repeatedly sending the first request information needs to be less than or equal to the preset value X.
  • the preset value may be the number threshold preset by the terminal or the number threshold configured by the network device.
  • the method before sending the first request information, further includes: determining that at least one cell link failure exists in the L cells; or determining that at least one cell link failure exists in the L cells, and Restore the reference signal of the link of the at least one cell.
  • the embodiment of the present application may be the same as the content described in the embodiment shown in the previous figure and FIG. 5, and in order to avoid repetition, details are not described here.
  • the link failure recovery method when the second request information corresponding to the k-th cell indicates multiple reference signals may be the same as step 302.
  • the reference signal information corresponding to the k-th cell among the M cells that indicate link failure in the second request information is q pieces of reference signal information, 1 ⁇ k ⁇ M, 1 ⁇ q ⁇ N, And k and q are both integers.
  • the detecting the response information of the M cells includes: detecting the response information corresponding to the k-th cell according to the priority order of the q reference signal information.
  • the detecting the k-th cell response information according to the priority order of the q reference signal information includes: a reference sorted according to the p-th priority in the q reference signal information in the p-th time window Signal information, detecting response information corresponding to the k-th cell, 1 ⁇ p ⁇ q.
  • the method further includes: after the response information of the second request information is not detected in the p-th time window according to the p-th priority ordering, according to the q reference information in the p+1-th time window The p+1-th priority-ranked reference signal information of the signal information is detected, and the response information of the second request information is detected.
  • the p+1-th time window is a time period later than the p-th time window.
  • the method further includes: after the response information of the second request information is not detected in the p-th time window according to the p-th priority ranking, after the response information of the second request information is not detected according to the p+1-th time window before the response information of the second request information is detected by the reference signal information sorted by priority, the fifth request information needs to be sent.
  • the fifth request information is used to indicate that the second request information is not detected in the p-th time window. Response information.
  • the network device after receiving the fifth request information, the network device knows that the terminal device has not detected the response information of the second request information corresponding to the p-th reference signal, and the network device can then base on the p+1-th reference signal.
  • the network device may consider that the link is restored successfully, and the network device may no longer send response information for the second request information.
  • the start position of the p+1th time window corresponding to the p+1th reference signal information is located at Y time units after the fifth request information is sent, and Y is greater than or equal to 0.
  • the fifth request information is carried in the second resource.
  • the fifth request information may be carried in the first resource.
  • the fifth request information may have the same format as the first request information.
  • the method further includes: the terminal detects the response information of the second request information according to the p-th reference signal information, and if the response to the second request information is detected, it may also send the terminal
  • the device sends confirmation information, which is used to indicate that the response information of the second request information corresponding to the p-th reference signal is detected, or used to indicate that it is detected in the p-th time window corresponding to the p-th reference signal information Response information of the second request information.
  • the network device can release the second resource in time or even if it stops sending the response information or learns that the link fails to recover successfully, this effectively saves resource overhead.
  • the confirmation information may carry the second resource, that is, occupy the same resource as the second request information, that is, the confirmation information may use semi-static resources to save resource overhead. If the response information of the second request information is not detected according to the p-th reference signal information, then (in the second time window) the response information of the second request information is detected according to the p+1-th reference signal information (without sending the fifth Request information).
  • the response information of sending or detecting the first/second/third request information according to the reference signal can be understood as the reference signal and the response If the information satisfies the QCL relationship, it can also be understood as sending or receiving the response information according to the beam corresponding to the reference signal.
  • the response information of the second request information corresponding to the reference signal can also be understood as the reference signal and the response information satisfying the QCL relationship, and can also be understood as sending or receiving the response information according to the beam corresponding to the reference signal.
  • the response information of the second request information is detected according to the p-th reference signal information, it can be understood that the p-th reference signal and the response information satisfy the QCL relationship, or it can be understood as the reception when the terminal device uses the p-th reference signal
  • the beam or space related parameters receive the response information of the second request information.
  • the reference signal information may include reference signal index/SSB index and or reference signal quality/SSB quality.
  • the first reference signal or the second reference signal may be a reference signal in a candidate reference signal resource set for link recovery, and It may be a reference signal in a reference signal resource set used for beam training, a reference signal in another reference signal resource set, or an SSB in an SSB resource set.
  • the reference signal can be CSI-RS, SSB, or TRS.
  • the channel quality of the reference signal is greater than a preset threshold.
  • the cell where the link fails and the cell where the resource carrying the first/second/third request information is located may be the same or different.
  • the M cells where the link fails are SCells, and the cells where the resources carrying the first/second/third request information are located may be PCells or SCells with uplink resources.
  • the cell where the first requested information resource is carried and the cell where the second requested information resource is carried may be the same or different.
  • the cell where the resource carrying the second request information is located may be the same or different from the cell where the resource carrying the third request information is located.
  • the cell where the resource carrying the first/second/third request information is located and the cell where the resource carrying the response information is located may be the same or different.
  • the response information of M cells can be understood as each cell corresponds to one response information, and there are a total of M response information. It can also be understood that the response information of M cells corresponds to one response information or multiple response information in total.
  • FIG. 10 shows a schematic block diagram of an apparatus 1000 for link failure recovery according to an embodiment of the present application.
  • the apparatus 1000 may correspond to the terminal in the embodiment shown in FIG. 4, and may have any function of the terminal in the method.
  • the device 1000 includes a transceiver module 1010.
  • the transceiver module 1010 is configured to send first request information on a first resource, where the first request information is used to indicate link failure of at least one of the L cells, and the L is an integer greater than 1;
  • the transceiver module 1010 is configured to send second request information on a second resource, where the second request information is used to indicate the cell information of the M cells where the link of the L cells fails, M ⁇ 1, and M Is an integer.
  • the cell information of the M cells includes cell identities of the M cells and/or N first reference signal information for restoring the M cells, N ⁇ 1, and N is an integer.
  • the device 1000 further includes:
  • the processing module 1020 is used to detect the response information of the M cells
  • the transceiver module 1010 is also used to send third request information, where the third request information indicates the cell of the i-th cell if the response information of the i-th cell among the M cells is not detected Identification and/or second reference signal information for restoring the i-th cell, i is a positive integer, and 1 ⁇ i ⁇ M, and when the response information of the j-th cell among the M cells is detected Below, the third request information also indicates the confirmation information of the j-th cell, where j is a positive integer, and 1 ⁇ j ⁇ M, i is not equal to j; or
  • the transceiver module 1010 is further configured to send the third request information, where, in the case that the response information of the i-th cell among the M cells is not detected, the third request information indicates the information of the i-th cell
  • the cell identity and/or the second reference signal information used to restore the i-th cell, i is a positive integer and 1 ⁇ i ⁇ M, or when the response information of the j-th cell among the M cells is detected
  • the cell information of the k-th cell in the M cells includes q pieces of first reference signal information, where k is a positive integer, and 1 ⁇ q ⁇ N.
  • the processing module 1020 is specifically configured to: detect the response information corresponding to the k-th cell according to the priority order of the q reference signal information.
  • the processing module 1020 is specifically configured to: in the p-th time window, detect the response information corresponding to the k-th cell according to the reference signal information sorted by the p-th priority in the q reference signal information, 1 ⁇ p ⁇ q.
  • the processing module 1020 is further configured to: after the response information of the second request information is not detected according to the p-th priority order in the p-th time window, according to the p+1-th time window The p+1-th priority-ranked reference signal information of the q reference signal information is detected, and the response information of the second request information is detected, and the p+1-th time window is a time period later than the p-th time window.
  • the transceiver module 1010 is specifically configured to send the third request information on the second resource.
  • processing module 1020 is further configured to release the second resource when the response information of the M cells is detected.
  • the transceiver module is further configured to resend the first request information on the fourth resource; the transceiver module is also configured to Receive the response information of the re-sent first request information, where the response information of the re-sent first request information is used to indicate a third resource; wherein, the transceiver module 1010 is specifically configured to: send the response information on the third resource The third request information.
  • the fourth resource is the same as the first resource.
  • W is the maximum number of transmission times of the first request information
  • X is the maximum number of transmission times of the request information for indicating any one of the M cells .
  • the transceiver module 1010 is further configured to receive response information of the first request information, and the response information of the first request information is used to indicate or activate the second resource.
  • the second resource is configured by higher layer signaling, or the second resource is a resource associated with the first resource or the first request information.
  • the processing module 1020 is further configured to determine that there is at least one cell link failure in the L cells; or
  • the processing module 1020 is also used to determine that there is at least one cell link failure in the L cells, and to restore the reference signal information of the link of the at least one cell.
  • FIG. 11 shows an apparatus 1100 for link failure recovery provided by an embodiment of the present application.
  • the apparatus 1100 may be the terminal described in FIG. 4.
  • the device can adopt the hardware architecture shown in FIG. 11.
  • the device may include a processor 1110 and a transceiver 1120.
  • the device may also include a memory 1130.
  • the processor 1110, the transceiver 1120, and the memory 1130 communicate with each other through an internal connection path.
  • the relevant functions implemented by the processing module 1120 in FIG. 11 may be implemented by the processor 1110, and the relevant functions implemented by the transceiver module 1110 may be implemented by the processor 1110 controlling the transceiver 1120.
  • the processor 1110 may be a general-purpose central processing unit (central processing unit, CPU), a microprocessor, an application-specific integrated circuit (ASIC), a dedicated processor, or one or more It is an integrated circuit that implements the technical solutions of the embodiments of the present application.
  • a processor may refer to one or more devices, circuits, and/or processing cores for processing data (for example, computer program instructions).
  • it can be a baseband processor or a central processing unit.
  • the baseband processor can be used to process communication protocols and communication data
  • the central processor can be used to control link failure recovery devices (such as base stations, terminals, or chips), execute software programs, and process software programs. data.
  • the processor 1110 may include one or more processors, such as one or more central processing units (CPU).
  • processors such as one or more central processing units (CPU).
  • CPU central processing units
  • the CPU may be a single processor.
  • the core CPU can also be a multi-core CPU.
  • the transceiver 1120 is used to send and receive data and/or signals, and receive data and/or signals.
  • the transceiver may include a transmitter and a receiver, the transmitter is used to send data and/or signals, and the receiver is used to receive data and/or signals.
  • the memory 1130 includes but is not limited to random access memory (RAM), read-only memory (ROM), erasable programmable memory (erasable read only memory, EPROM), read-only memory A compact disc (read-only memory, CD-ROM), the memory 1130 is used to store related instructions and data.
  • RAM random access memory
  • ROM read-only memory
  • EPROM erasable programmable memory
  • CD-ROM compact disc
  • the memory 1130 is used to store program codes and data of the terminal, and may be a separate device or integrated in the processor 1110.
  • the processor 1110 is configured to control the transceiver to perform information transmission with the terminal.
  • the processor 1110 is configured to control the transceiver to perform information transmission with the terminal.
  • the apparatus 1100 may further include an output device and an input device.
  • the output device communicates with the processor 1110 and can display information in a variety of ways.
  • the output device may be a liquid crystal display (LCD), a light emitting diode (LED) display device, a cathode ray tube (CRT) display device, or a projector, etc.
  • the input device communicates with the processor 601 and can receive user input in various ways.
  • the input device may be a mouse, a keyboard, a touch screen device, or a sensor device.
  • FIG. 11 only shows the simplified design of the device for link failure recovery.
  • the device may also contain other necessary components, including but not limited to any number of transceivers, processors, controllers, memories, etc., and all terminals that can implement this application are within the protection scope of this application. within.
  • the device 1100 may be a chip, for example, a communication chip that can be used in a terminal to implement related functions of the processor 1110 in the terminal.
  • the chip can be a field programmable gate array, a dedicated integrated chip, a system chip, a central processing unit, a network processor, a digital signal processing circuit, a microcontroller, and a programmable controller or other integrated chips for realizing related functions.
  • the chip may optionally include one or more memories for storing program codes. When the codes are executed, the processor realizes corresponding functions.
  • the embodiment of the present application also provides a device, which may be a terminal or a circuit.
  • the device can be used to perform the actions performed by the terminal in the foregoing method embodiments.
  • FIG. 12 shows a schematic block diagram of an apparatus 1200 for link failure recovery according to an embodiment of the present application.
  • the apparatus 1200 may correspond to the network device in the embodiment shown in FIG. 4, and may have any function of the network device in the method.
  • the device 1200 includes a transceiver module 1210.
  • the transceiver module 1210 is configured to receive first request information in a first resource, where the first request information is used to indicate link failure of at least one of the L cells, and the L is an integer greater than 1;
  • the transceiver module 1210 is configured to receive the second request information in the second resource, the second request information is used to indicate the cell information of the M cells where the link of the L cells fails, M ⁇ 1, and M is Integer.
  • the cell information of the M cells includes cell identities of the M cells and/or N first reference signal information for restoring the M cells, N ⁇ 1, and N is an integer.
  • the transceiver module 1210 is also used for:
  • Receive third request information where the third request information is used to indicate the cell identity of the i-th cell and/or the second reference signal information used to restore the i-th cell, i is a positive integer, and 1 ⁇ i ⁇ M; or
  • the third request information is used to indicate that the third request information is used to indicate the confirmation information of the j-th cell, j is a positive integer, and 1 ⁇ j ⁇ M.
  • the transceiver module 1210 is specifically configured to receive the third request information on the second resource.
  • the transceiver module 1210 is also used for:
  • the transceiver module 1210 is specifically used for:
  • the third request information is received.
  • the fourth resource is the same as the first resource.
  • the transceiver module is further configured to send response information of the first request information, where the response information is used to indicate or activate the second resource.
  • the transceiver module is further configured to send high-level signaling, and the high-level signaling is used to configure the second resource.
  • the second resource is a resource associated with the first resource or the first request information.
  • the transceiver module 1210 is also used to send configuration information, where the configuration information is used to configure the first resource.
  • FIG. 13 shows an apparatus 1300 for link failure recovery provided by an embodiment of the present application.
  • the apparatus 1300 may be the terminal described in FIG. 4.
  • the device can adopt the hardware architecture shown in FIG. 13.
  • the device may include a processor 1310 and a transceiver 1320.
  • the device may also include a memory 1330.
  • the processor 1310, the transceiver 1320, and the memory 1330 communicate with each other through an internal connection path.
  • the related functions implemented by the processing module 1320 in FIG. 13 may be implemented by the processor 1310, and the related functions implemented by the transceiver module 1310 may be implemented by the processor 1310 controlling the transceiver 1320.
  • the processor 1310 may be a general-purpose central processing unit (central processing unit, CPU), a microprocessor, an application-specific integrated circuit (ASIC), a dedicated processor, or one or more It is an integrated circuit implementing the technical solutions of the embodiments of the present application.
  • a processor may refer to one or more devices, circuits, and/or processing cores for processing data (for example, computer program instructions).
  • it can be a baseband processor or a central processing unit.
  • the baseband processor can be used to process communication protocols and communication data
  • the central processor can be used to control link failure recovery devices (such as base stations, terminals, or chips), execute software programs, and process software programs. data.
  • the processor 1310 may include one or more processors, such as one or more central processing units (CPU).
  • processors such as one or more central processing units (CPU).
  • CPU central processing units
  • the CPU may be a single processor.
  • the core CPU can also be a multi-core CPU.
  • the transceiver 1320 is used to send and receive data and/or signals, and to receive data and/or signals.
  • the transceiver may include a transmitter and a receiver, the transmitter is used to send data and/or signals, and the receiver is used to receive data and/or signals.
  • the memory 1330 includes but is not limited to random access memory (RAM), read-only memory (ROM), erasable programmable memory (erasable read only memory, EPROM), read-only memory A compact disc (read-only memory, CD-ROM), the memory 1330 is used to store related instructions and data.
  • RAM random access memory
  • ROM read-only memory
  • EPROM erasable programmable memory
  • CD-ROM compact disc
  • the memory 1330 is used to store program codes and data of the terminal, and may be a separate device or integrated in the processor 1310.
  • the processor 1310 is configured to control the transceiver to perform information transmission with the terminal.
  • the processor 1310 is configured to control the transceiver to perform information transmission with the terminal.
  • the apparatus 1300 may further include an output device and an input device.
  • the output device communicates with the processor 1310 and can display information in a variety of ways.
  • the output device may be a liquid crystal display (LCD), a light emitting diode (LED) display device, a cathode ray tube (CRT) display device, or a projector, etc.
  • the input device communicates with the processor 601 and can receive user input in various ways.
  • the input device may be a mouse, a keyboard, a touch screen device, or a sensor device.
  • FIG. 13 only shows a simplified design of the device for link failure recovery.
  • the device may also contain other necessary components, including but not limited to any number of transceivers, processors, controllers, memories, etc., and all terminals that can implement this application are within the protection scope of this application. within.
  • the device 1300 may be a chip, for example, a communication chip that can be used in a terminal to implement related functions of the processor 1310 in the terminal.
  • the chip can be a field programmable gate array, a dedicated integrated chip, a system chip, a central processing unit, a network processor, a digital signal processing circuit, a microcontroller, and a programmable controller or other integrated chips for realizing related functions.
  • the chip may optionally include one or more memories for storing program codes. When the codes are executed, the processor realizes corresponding functions.
  • the embodiment of the present application also provides a device, which may be a terminal or a circuit.
  • the device can be used to perform the actions performed by the terminal in the foregoing method embodiments.
  • FIG. 14 shows a simplified structural diagram of a terminal. It is easy to understand and easy to illustrate.
  • the terminal uses a mobile phone as an example.
  • the terminal includes a processor, a memory, a radio frequency circuit, an antenna, and an input and output device.
  • the processor is mainly used to process the communication protocol and communication data, control the terminal, execute the software program, and process the data of the software program.
  • the memory is mainly used to store software programs and data.
  • the radio frequency circuit is mainly used for the conversion of baseband signal and radio frequency signal and the processing of radio frequency signal.
  • the antenna is mainly used to send and receive radio frequency signals in the form of electromagnetic waves.
  • Input and output devices such as touch screens, display screens, and keyboards, are mainly used to receive data input by users and output data to users. It should be noted that some types of terminals may not have input and output devices.
  • the processor When data needs to be sent, the processor performs baseband processing on the data to be sent, and outputs the baseband signal to the radio frequency circuit.
  • the radio frequency circuit performs radio frequency processing on the baseband signal and sends the radio frequency signal to the outside in the form of electromagnetic waves through the antenna.
  • the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, and the processor converts the baseband signal into data and processes the data.
  • only one memory and processor are shown in FIG. 14. In actual end products, there may be one or more processors and one or more memories.
  • the memory may also be referred to as a storage medium or storage device.
  • the memory may be set independently of the processor, or may be integrated with the processor, which is not limited in the embodiment of the present application.
  • the antenna and radio frequency circuit with the transceiving function can be regarded as the transceiving unit of the terminal, and the processor with the processing function can be regarded as the processing unit of the terminal.
  • the terminal includes a transceiver unit 1410 and a processing unit 1420.
  • the transceiver unit may also be referred to as a transceiver, a transceiver, a transceiver, and so on.
  • the processing unit may also be called a processor, a processing board, a processing module, a processing device, and so on.
  • the device for implementing the receiving function in the transceiver unit 1410 can be regarded as the receiving unit, and the device for implementing the sending function in the transceiver unit 1410 as the sending unit, that is, the transceiver unit 1410 includes a receiving unit and a sending unit.
  • the transceiver unit may sometimes be called a transceiver, a transceiver, or a transceiver circuit.
  • the receiving unit may sometimes be called a receiver, receiver, or receiving circuit.
  • the transmitting unit may sometimes be called a transmitter, a transmitter, or a transmitting circuit.
  • transceiving unit 1410 is used to perform sending and receiving operations on the terminal side in the foregoing method embodiment, and the processing unit 1420 is used to perform other operations on the terminal in addition to the transceiving operation in the foregoing method embodiment.
  • the processing unit 1420 is configured to execute the processing steps on the terminal side in FIG. 3.
  • the transceiver unit 1410 is configured to perform the transceiver operations in step 301 and/or step 302 in FIG. 3, and/or the transceiver unit 1410 is also configured to perform other transceiver steps on the terminal side in the embodiment of the present application.
  • the chip When the communication device is a chip, the chip includes a transceiver unit and a processing unit.
  • the transceiver unit may be an input/output circuit or a communication interface;
  • the processing unit is a processor or microprocessor or integrated circuit integrated on the chip.
  • the device shown in FIG. 15 can also be referred to.
  • the device can perform functions similar to the processor 1410 in FIG. 14.
  • the device includes a processor 1501, a data sending processor 1503, and a data receiving processor 1505.
  • the processing module 1020 in the foregoing embodiment may be the processor 1501 in FIG. 15 and completes corresponding functions.
  • the transceiver module 1010 in the foregoing embodiment may be the sending data processor 1503 and the receiving data processor 1505 in FIG. 15.
  • the channel encoder and the channel decoder are shown in FIG. 15, it can be understood that these modules do not constitute a restrictive description of this embodiment, and are only illustrative.
  • the processing device 1600 includes modules such as a modulation subsystem, a central processing subsystem, and a peripheral subsystem.
  • the communication device in this embodiment can be used as the modulation subsystem therein.
  • the modulation subsystem may include a processor 1603 and an interface 1604.
  • the processor 1603 performs the function of the aforementioned processing module 610
  • the interface 1604 performs the function of the aforementioned transceiver module 620.
  • the modulation subsystem includes a memory 1606, a processor 1603, and a program stored in the memory and capable of running on the processor. When the processor executes the program, the program described in the first to fifth embodiments is implemented. method.
  • the memory 1606 can be non-volatile or volatile, and its location can be located inside the modulation subsystem or in the processing device 1600, as long as the memory 1606 can be connected to the The processor 1603 is fine.
  • the device 1700 includes one or more radio frequency units, such as a remote radio unit (RRU) 1710 and one or more basebands.
  • a unit (baseband unit, BBU) also referred to as a digital unit, DU) 1720.
  • BBU baseband unit
  • the RRU 1710 may be called a transceiver module, which corresponds to the transceiver module 810 in FIG. 8.
  • the transceiver module may also be called a transceiver, a transceiver circuit, or a transceiver, etc., which may include at least one antenna 1715 And radio frequency unit 1716.
  • the RRU 1710 part is mainly used for sending and receiving of radio frequency signals and conversion of radio frequency signals and baseband signals, for example, for sending instruction information to terminal equipment.
  • the 1710 part of the BBU is mainly used for baseband processing and control of the base station.
  • the RRU 1710 and the BBU 1720 may be physically set together, or may be physically separated, that is, a distributed base station.
  • the BBU 1720 is the control center of the base station, and may also be called a processing module, which may correspond to the processing module 1220 in FIG. 12, and is mainly used to complete baseband processing functions, such as channel coding, multiplexing, modulation, and spreading.
  • the BBU processing module
  • the BBU may be used to control the base station to execute the operation procedure of the network device in the foregoing method embodiment, for example, to generate the foregoing indication information.
  • the BBU 1720 may be composed of one or more single boards, and multiple single boards may jointly support a radio access network (such as an LTE network) of a single access standard, or support different access standards. Wireless access network (such as LTE network, 5G network or other networks).
  • the BBU 1720 also includes a memory 1721 and a processor 1722.
  • the memory 1721 is used to store necessary instructions and data.
  • the processor 1722 is used to control the base station to perform necessary actions, for example, used to control the base station to execute the operation procedure of the network device in the foregoing method embodiment.
  • the memory 1721 and the processor 1722 may serve one or more boards. In other words, the memory and the processor can be set separately on each board. It can also be that multiple boards share the same memory and processor. In addition, necessary circuits can be provided on each board.
  • a computer-readable storage medium is provided, and an instruction is stored thereon, and the method in the foregoing method embodiment is executed when the instruction is executed.
  • a computer program product containing instructions is provided, and when the instructions are executed, the method in the foregoing method embodiment is executed.
  • 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 transmitted from a website, computer, server, or data center.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or a data center integrated with one or more available media.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a high-density digital video disc (digital video disc, DVD)), or a semiconductor medium (for example, a solid state disk, SSD)) etc.
  • the processor may be an integrated circuit chip with signal processing capabilities.
  • the steps of the foregoing method embodiments can be completed by hardware integrated logic circuits in the processor or instructions in the form of software.
  • the above-mentioned processor may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a ready-made programmable gate array (field programmable gate array, FPGA) or other Programming logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA ready-made programmable gate array
  • the methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers.
  • the storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.
  • the memory in the embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory can be read-only memory (ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), and electronic Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory.
  • the volatile memory may be random access memory (RAM), which is used as an external cache.
  • RAM random access memory
  • static random access memory static random access memory
  • dynamic RAM dynamic random access memory
  • DRAM dynamic random access memory
  • synchronous dynamic random access memory synchronous DRAM, SDRAM
  • double data rate synchronous dynamic random access memory double data rate SDRAM, DDR SDRAM
  • enhanced synchronous dynamic random access memory enhanced SDRAM, ESDRAM
  • synchronous link dynamic random access memory synchronous link DRAM, SLDRAM
  • direct memory bus random access memory direct rambus RAM, DR RAM
  • At least one refers to one or more, and “multiple” refers to two or more.
  • “And/or” describes the association relationship of the associated objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A alone exists, both A and B exist, and B exists alone, where A, B can be singular or plural.
  • the character “/” generally indicates that the associated objects are in an "or” relationship.
  • "The following at least one item (a)” or similar expressions refers to any combination of these items, including any combination of a single item (a) or plural items (a).
  • at least one item (a) of a, b, or c can mean: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple .
  • component used in this specification are used to denote computer-related entities, hardware, firmware, a combination of hardware and software, software, or software in execution.
  • the component may be, but is not limited to, a process, a processor, an object, an executable file, an execution thread, a program, and/or a computer running on a processor.
  • the application running on the computing device and the computing device can be components.
  • One or more components may reside in processes and/or threads of execution, and components may be located on one computer and/or distributed among two or more computers.
  • these components can be executed from various computer readable media having various data structures stored thereon.
  • the component may be based on, for example, a signal having one or more data packets (such as data from two components interacting with another component in a local system, a distributed system, and/or a network, such as the Internet that interacts with other systems through signals) Communicate through local and/or remote processes.
  • a signal having one or more data packets (such as data from two components interacting with another component in a local system, a distributed system, and/or a network, such as the Internet that interacts with other systems through signals) Communicate through local and/or remote processes.
  • a and/or B can mean: A alone exists, and both A and B exist. , There are three cases of B alone. Among them, the presence of A or B alone does not limit the number of A or B. Taking the existence of A alone as an example, it can be understood as having one or more A.
  • the disclosed system, device, and method may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or It can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • each unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium.
  • the technical solution of this application essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in each embodiment of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (read-only memory, ROM), random access memory (random access memory, RAM), magnetic disk or optical disk and other media that can store program code .

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Abstract

本申请提供了链路失败恢复的方法和装置。终端在检测到多个小区中的任意一个小区的链路失败，或者多个小区中的任意多个小区的链路失败，都可以在同一个资源上(即第一资源)向网络设备发送第一请求信息，以告知网络设备该L个小区中至少存在一个小区的链路发生失败。这样在多载波场景中，相对于每个小区的链路失败占用一个资源发送一个请求信息，本申请实施例节省了资源开销。

Description

链路失败恢复的方法和装置
本申请要求于2019年3月20日提交中国专利局、申请号为201910212397.3、申请名称为“链路失败恢复的方法和装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信领域，更具体地，涉及一种链路失败恢复的方法和装置。
背景技术
由于在通信过程中存在遮挡，高频信道下的绕射能力差，导致当前服务的波束被阻挡，信号无法继续传输。为了防止在出现波束被阻挡的情况下，通信被突然中断，需要引入相应的机制对波束质量进行检测，并在发生阻挡的情况下快速恢复链路。
终端在检测到链路故障的情况下，向网络设备发送两次请求信息，例如，第一次请求信息用于告知网络设备链路失败，第二次请求信息用于指示新识别的波束的信息，其中第一次请求信息为周期性发送，第二请求信息为非周期性发送，这样相对于频繁的周期性的发送一次同时用于指示链路失败和新识别的波束信息的请求信息，能够节省资源开销。其中，第一次请求信息可以是波束失败恢复请求(beam failure recovery request，BFRQ)1，BFRQ1，第二次请求信息可以是BFRQ2。
但是，在多载波场景中，每个单元载波(component carrier，CC)对应一个小区(cell)。终端在检测到链路故障的情况下，若按照上述方式进行请求信息的发送，则资源开销比较大。
发明内容
本申请提供一种链路失败恢复的方法和装置，能够节省资源开销。
第一方面，提供了一种链路失败恢复的方法，该方法包括：在第一资源上发送第一请求信息，该第一请求信息用于指示L个小区中的至少一个小区的链路失败，该L为大于1的整数；在第二资源上发送第二请求信息，该第二请求信息用于指示L个小区中的链路失败的M个小区的小区信息，M≥1，且M为整数。
终端在检测到L个小区中的任意一个小区的链路失败，或者L个小区中的任意多个小区的链路失败，都可以在同一个资源上(即第一资源)向网络设备发送第一请求信息，以告知网络设备该L个小区中至少存在一个小区的链路发生失败。这样在多载波场景中，相对于每个小区的链路失败占用一个资源发送一个请求信息，本申请实施例节省了资源开销。该第二请求信息用于指示该L个小区中的链路失败的M个小区的小区标识，这样网络设备根据该第二请求信息可以获知该L个小区中具体发生链路失败的小区的相关信息。其中，在M＝1的情况下，该第二请求信息可以用于指示L个小区中的链路失败的任意一 个小区的小区信息，这样相对于每个小区的请求信息占用不同的资源发送第二请求信息，节省了资源开销。在M＞1的情况下，该第二请求信息可以用于指示链路失败的多个小区的小区信息，这样相对于M个小区中的每个小区的请求信息分别发送或分时发送，本申请实施例节省了恢复时延。
在一些可能的实现方式中，该M个小区的小区信息包括该M个小区的小区标识和/或用于恢复该M个小区的N个第一参考信号信息，N≥1，且N为整数。
小区标识和第一参考信号信息可以具有映射关系，这样在M个小区的小区信息只包括M个小区的小区标识的情况下，网络设备可以根据该M小区的标识确定对应的第一参考信号，或者在M个小区的小区信息只包括N个第一参考信号的情况下，网络设备可以根据该N个第一参考信号确定对应的小区标识，从而减少第二指示信息中携带的内容，减少资源占用。
在一些可能的实现方式中，该方法还包括：检测该M个小区的响应信息；发送第三请求信息，其中，在未检测到该M个小区中的第i个小区的响应信息的情况下，该第三请求信息指示该第i个小区的小区标识和/或用于恢复该第i个小区的第二参考信号信息，i为正整数，且1≤i≤M，和在检测到该M个小区中的第j个小区的响应信息的情况下，该第三请求信息还指示该第j个小区的确认信息，其中，j为正整数，且1≤j≤M，i不等于j。
在终端检测到第j个小区对应的第二请求信息的响应信息的情况下，终端向网络设备发送包括该第j个小区的确认信息的第三请求信息，这样网络设备可以获知该第j个小区的链路恢复成功，从而可以释放第二资源，避免资源浪费，或者当网络设备或者该M个小区均链路恢复成功，便可及时释放第二资源(可以配置用于传输其他信息，或释放给其它用于传输上行数据或信号)。
在一些可能的实现方式中，发送该第三请求信息，其中，在未检测到该M个小区中的第i个小区的响应信息的情况下，该第三请求信息指示该第i个小区的小区标识和/或用于恢复该第i个小区的第二参考信号信息，i为正整数，且1≤i≤M，或在检测到该M个小区中的第j个小区的响应信息的情况下，该第三请求信息用于指示该第j个小区的确认信息，其中，j为正整数，且1≤j≤M，i＝j。
终端设备没有检测到第二请求信息的响应信息，则终端可以重新发送该第i个小区的小区信息，从而提高了链路恢复成功的概率，提高了信号传输的效率。
在一些可能的实现方式中，该M个小区中的第k个小区的小区信息包括q个第一参考信号信息，k为正整数，1＜q≤N。
该M个小区中的第k个小区的小区信息可以包括多个第一参考信号，也就是说，终端可以同时发送多个参考信号信息用于共同来恢复链路失败的该第k个小区，从而更进一步提高链路恢复成功的概率。
在一些可能的实现方式中，该检测该M个小区的响应信息包括：根据该q个参考信号信息，检测该第k个小区对应的响应信息。终端设备可以以波束扫描的方式根据该q个参考信号检测该响应信息，或者终端设备可以同时根据该q个参考信号中的一个或多个参考信号检测响应信息(此时该终端设备可以有多个panel)。
在一些可能的实现方式中，该检测该M个小区的的响应信息包括：根据该q个参考信号信息的优先级顺序，检测该第k个小区对应的响应信息。
q个参考信号信息的优先级可以是终端根据恢复该第k个小区的链路的成功率或参考信号的质量确定的，或者可以是根据参考信号信息的ID的顺序确定的，或者根据参考信号信息上报的顺序确定的。终端根据该q个参考信号信息的优先级顺序，可以分别检测该第k个小区对应的响应信息，这样可以提高第二请求信息的响应信息传输成功的概率，也即链路失败恢复成功的概率。
应理解，本实施例中参考信号信息的优先级可以等效为恢复该第k个小区的链路的成功率顺序或参考信号的质量大小顺序，或者可以是参考信号信息的ID的顺序，或者参考信号信息上报的顺序，本申请还可以有其他描述方式，并不对此做限定。
在一些可能的实现方式中，该根据该参考信号信息的优先级顺序，检测该第k个小区对应的响应信息包括：在第p个时间窗口根据该q个参考信号信息中的第p个优先级排序的参考信号信息，检测该第k个小区对应的响应信息，1≤p≤q。
终端根据该q个参考信号信息中每个参考信号信息检测该第k个小区对应的响应信息可以是在对应的时间窗口上检测，这样避免了根据某一个参考信号检测第二请求信息的响应信息的等待时长太长，造成链路恢复时延较长，即本申请实施例提高了链路恢复的效率，减少了链路恢复时间。
在一些可能的实现方式中，该方法还包括：在该第p个时间窗口内根据第p个优先级排序未检测到该第k个小区对应的的响应信息后，发送第五请求信息，该第五请求信息用于指示未在该第p个时间窗口检测到该第k个小区对应的响应信息。
若未检测到该第二请求信息的响应，还可以向网络设备发送第五请求信息，该第五请求信息用于指示未检测到该第p个参考信号对应的第二请求信息的响应信息，网络设备可以根据第五请求信息获知终端是否接收到响应信息，进而获知终端还会接续发送请求信息，这样网络设备可以提前做好链路恢复准备，更进一步节省时延。
在一些可能的实现方式中，该方法还包括：在该第p个时间窗口内根据第p个优先级排序未检测到该第二请求信息的响应信息后，在第p+1个时间窗口根据该q个参考信号信息的第p+1个优先级排序的参考信号信息，检测该第二请求信息的响应信息，该第p+1个时间窗口为晚于该第p个时间窗口的时段。
终端根据该q个参考信号信息的优先级顺序，检测该第二请求信息的响应信息可以是在根据上一个参考信号信息(例如，第p个参考信号信息)检测该第二请求信息的响应信息失败的情况下，再根据下一个参考信号信息(例如，第p+1个参考信号信息)检测该第二请求信息的响应信息，从而更近一步节省信令开销。
在一些可能的实现方式中，该第五请求信息承载在该第二资源。
该第五请求信息可以承载于第二资源，即与第二请求信息占用相同的资源，即第五请求信息可以采用半静态资源，节省资源开销。
在一些可能的实现方式中，该发送第三请求信息包括：在该第二资源上，发送该第三请求信息。
终端可以复用发送第二请求信息的资源发送该第三请求信息，无需等待第一请求信息的响应信息再分配资源发送第二请求信息，从而节省了资源分配的时间，此外，整体上提高了链路恢复速度。
在一些可能的实现方式中，该方法还包括：在检测到该M个小区的响应信息时，释 放该第二资源。
终端在该M个小区全部恢复成功的情况下，可以释放第二资源。例如，终端可以在检测到该M个小区中每个小区对应的第二请求信息的响应信息时，确定该M个小区全部恢复成功。或者终端在检测到该M个小区中一部分小区对应的第二请求信息的响应信息，另一部分小区对应的第三请求信息的响应信息时，确定该M个小区全部恢复成功。或者终端在检测到该M个小区中每个小区的第三请求信息的响应信息时，确定该M个小区全部恢复成功。
在一些可能的实现方式中，在未检测到该M个小区中的至少一个小区的响应信息的情况下，该方法还包括：在第四资源上重新发送第一请求信息；接收该重新发送的第一请求信息的响应信息，该重新发送的第一请求信息的响应信息用于指示第三资源；其中，该发送第三请求信息包括：在该第三资源上，发送该第三请求信息。
该第三资源可以动态配置的，提高了资源利用率。
在一些可能的实现方式中，该第四资源和该第一资源相同。
对于第一请求信息来说，传输该第一请求信息的资源可以是静态的，即初次传输第一请求信息占用的资源，也可以用于重传该第一请求信息，不需要重新分配，节省了时间。
在一些可能的实现方式中，W≤X·L，W为该第一请求信息的传输次数的最大值，X为用于指示该M个小区中的任一个小区的小区信息的请求信息的传输次数的最大值。
M是等于1还是大于1，可以取决于基站配置的第二资源大小，或者发生链路失败的资源小区情况。这样本申请实施例可以避免终端设备频繁发送链路失败恢复请求信息，节省功耗开销。
在一些可能的实现方式中，该方法还包括：接收该第一请求信息的响应信息，该第一请求信息的响应信息用于指示或激活该第二资源。
对于第一请求信息的响应信息用于激活该第二资源，终端设备需要重传链路失败的小区信息时，可以不用再通过第一请求信息的响应信息分配的资源发送重传信息，而是直接在该第二资源上发送重传信息，可以有效降低恢复时延。
对于第一请求信息的响应信息用于指示该第二资源，终端设备需要重传链路失败的小区信息时，可以再通过第一请求信息的响应信息动态分配的资源发送重传信息，可以有效降低资源开销。
在一些可能的实现方式中，该第二资源为高层信令配置的，或该第二资源为与该第一资源或该第一请求信息关联的资源。
该第二资源可以是由网络设备为该终端配置的，并通过高层信令或系统信息发送给终端。该第二资源还可以网络设备和终端设备预先约定的，或者由终端提前设定，本申请对此不进行限定。该种方法在终端设备需要重传链路失败的小区信息时，可以不用再通过第一请求信息的响应信息分配的资源发送重传信息，而是直接在该第二资源上发送重传信息，可以有效减小链路恢复时延，提高链路恢复速度。
在一些可能的实现方式中，在该第一资源上发送该第一请求信息之前，该方法还包括：确定该L个小区中至少存在一个小区链路失败；或确定该L个小区中至少存在一个小区链路失败，以及用于恢复该至少一个小区的链路的参考信号信息。
本申请实施例能够提高了链路恢复的灵活性。
在一些可能的实现方式中，该方法还包括：接收配置信息，该配置信息用于指示该第一资源。
第二方面，提供了一种链路失败恢复的方法，该方法包括：在第一资源接收第一请求信息，该第一请求信息用于指示L个小区中的至少一个小区的链路失败，该L为大于1的整数；在第二资源接收该第二请求信息，该第二请求信息用于指示L个小区中的链路失败的M个小区的小区信息，M≥1，且M为整数。
在多载波场景中，相对于每个小区的链路失败占用一个资源发送一个请求信息，本申请实施例节省了资源开销。该第二请求信息用于指示该L个小区中的链路失败的M个小区的小区标识，这样网络设备根据该第二请求信息可以获知该L个小区中具体发生链路失败的小区的相关信息。
在一些可能的实现方式中，该M个小区的小区信息包括该M个小区的小区标识和/或用于恢复该M个小区的N个第一参考信号信息，N≥1，且N为整数。
小区标识和第一参考信号信息可以具有映射关系，这样在M个小区的小区信息只包括M个小区的小区标识的情况下，网络设备可以根据该M小区的标识确定对应的第一参考信号，或者在M个小区的小区信息只包括N个第一参考信号的情况下，网络设备可以根据该N个第一参考信号确定对应的小区标识，从而减少第二指示信息中携带的内容，减少资源占用。
在一些可能的实现方式中，该方法还包括：发送该M个小区中的第j个小区的响应信息，接收第三请求信息，该第三请求信息用于指示该M个小区中的第i个小区的小区标识和/或用于恢复该第i个小区的第二参考信号信息，以及该第j个小区的确认信息，1≤i≤M，1≤j≤M，i不等于j，i和j均为正整数；或接收第三请求信息，该第三请求信息用于指示该第i个小区的小区标识和/或用于恢复该第i个小区的第二参考信号信息，i为正整数，且1≤i≤M；或发送该第j个小区的响应信息，接收第三请求信息，该第三请求信息用于指示该第三请求信息用于指示该第j个小区的确认信息，j为正整数，且1≤j≤M。
在一些可能的实现方式中，该M个小区中的第k个小区的小区信息包括q个第一参考信号信息，k为正整数，1＜q≤N。
该M个小区中的第k个小区的小区信息可以包括多个第一参考信号，也就是说，网络设备可以同时接收多个参考信号信息用于共同来恢复链路失败的该第k个小区，从而更进一步提高链路恢复成功的概率。
在一些可能的实现方式中，该发送该M个小区的响应信息包括：根据该q个参考信号信息，发送该第k个小区对应的响应信息。网络设备可以以波束扫描的方式根据该q个参考信号发送该响应信息，或者网络设备可以同时根据该q个参考信号中的一个或多个参考信号发送响应信息(此时该网络设备可以有多个panel)。
在一些可能的实现方式中，该发送该M个小区的的响应信息包括：根据该q个参考信号信息的优先级顺序，发送该第k个小区对应的响应信息。
q个参考信号信息的优先级可以是网络设备根据恢复该第k个小区的链路的成功率或参考信号的质量确定的，或者可以是根据参考信号信息的ID的顺序确定的，或者根据参考信号信息上报的顺序确定的。网络设备根据该q个参考信号信息的优先级顺序，分别发送该第k个小区对应的响应信息，这样可以提高第二请求信息的响应信息传输成功的概 率，也即链路失败恢复成功的概率。
应理解，本实施例中参考信号信息的优先级可以等效为恢复该第k个小区的链路的成功率顺序或参考信号的质量大小顺序，或者可以是参考信号信息的ID的顺序，或者参考信号信息上报的顺序，本发明还可以有其他描述方式，并不对此做限定。
在一些可能的实现方式中，该根据该参考信号信息的优先级顺序，发送该第k个小区对应的响应信息包括：在第p个时间窗口根据该q个参考信号信息中的第p个优先级排序的参考信号信息，发送该第k个小区对应的响应信息，1≤p≤q。
网络设备根据该q个参考信号信息中每个参考信号信息发送该第k个小区对应的响应信息可以是在对应的时间窗口上发送，这样避免了根据某一个参考信号发送第二请求信息的响应信息的等待时长太长，造成链路恢复时延较长，即本申请实施例提高了链路恢复的效率，减少了链路恢复时间。
在一些可能的实现方式中，该方法还包括：接收第五请求信息，该第五请求信息用于指示未在该第p个时间窗口检测到该第k个小区对应的响应信息。网络设备可以根据第五请求信息获知终端是否接收到响应信息，进而获知终端还会接续发送请求信息，这样网络设备可以提前做好链路恢复准备，更进一步节省时延。
在一些可能的实现方式中，该第五请求信息承载在该第二资源。
该第五请求信息可以承载于第二资源，即与第二请求信息占用相同的资源，即第五请求信息可以采用半静态资源，节省资源开销。
在一些可能的实现方式中，该方法还包括：在发送该M个小区的响应信息时，释放该第二资源。
网络设备在该M个小区全部恢复成功的情况下，可以释放第二资源。例如，网络设备可以在获知终端设备检测到该M个小区中每个小区对应的第二请求信息的响应信息时，或者网络设备可以在发送该M个小区中每个小区对应的第二请求信息的响应信息时，确定该M个小区全部恢复成功。或者网络设备获知终端在检测到该M个小区中一部分小区对应的第二请求信息的响应信息，另一部分小区对应的第三请求信息的响应信息时，确定该M个小区全部恢复成功。或者网络设备发送该M个小区中一部分小区对应的第二请求信息的响应信息，另一部分小区对应的第三请求信息的响应信息时，确定该M个小区全部恢复成功。或者网络设备发送该M个小区中每个小区的第三请求信息的响应信息时，确定该M个小区全部恢复成功。应理解，网络设备获知终端设备检测到第二请求信息的响应信息或第三请求信息的响应信息的方式可以为网络设备接收到小区的确认信息。
在一些可能的实现方式中，网络设备在第四资源上重新接收第一请求信息；发送该重新发送的第一请求信息的响应信息，该重新发送的第一请求信息的响应信息用于指示第三资源；其中，该接收第三请求信息包括：在该第三资源上，接收该第三请求信息。
在一些可能的实现方式中，该接收第三请求信息包括：在该第二资源上，接收该第三请求信息。
网络设备复用第二请求信息的资源，接收终端发送的第三请求信息，整体上提高了链路恢复速度。
在一些可能的实现方式中，该方法还包括：在第四资源上接收第一请求信息；发送该第一请求信息的响应信息，该第一请求信息的响应信息用于指示第三资源；该接收第三请 求信息包括：在该第三资源上，接收该第三请求信息。
该第三资源可以动态配置的，提高了资源利用率。
在一些可能的实现方式中，该第四资源和该第一资源相同。
对于第一请求信息来说，传输该第一请求信息的资源可以是静态的，即初次传输第一请求信息占用的资源，也可以用于重传该第一请求信息，不需要重新分配，节省了时间。
在一些可能的实现方式中，W≤X·L，W为该第一请求信息的传输次数的最大值，X为该M个小区中的任一个小区的小区信息的请求信息的传输次数的最大值。
M是等于1还是大于1，可以取决于基站配置的第二资源大小，或者发生链路失败的资源小区情况。这样本申请实施例可以避免终端设备频繁发送链路失败恢复请求信息，节省功耗开销。
在一些可能的实现方式中，在该第二资源接收该第二请求信息之前，该方法还包括：发送该第一请求信息的响应信息，该响应信息用于指示或激活该第二资源。
对于第一请求信息的响应信息用于激活该第二资源，终端设备需要重传链路失败的小区信息时，可以不用再通过第一请求信息的响应信息分配的资源发送重传信息，而是直接在该第二资源上发送重传信息，可以有效降低恢复时延。
对于第一请求信息的响应信息用于指示该第二资源，终端设备需要重传链路失败的小区信息时，可以再通过第一请求信息的响应信息动态分配的资源发送重传信息，可以有效降低资源开销。
在一些可能的实现方式中，在该第二资源接收该第二请求信息之前，该方法还包括：发送高层信令，该高层信令用于配置该第二资源。
该第二资源可以是由网络设备为该终端配置的，并通过高层信令或系统信息发送给终端。
在一些可能的实现方式中，该第二资源为与该第一资源或该第一请求信息关联的资源。
该种方法在终端设备需要重传链路失败的小区信息时，可以不用再通过第一请求信息的响应信息分配的资源发送重传信息，而是直接在该第二资源上发送重传信息，可以有效减小链路恢复时延，提高链路恢复速度。
在一些可能的实现方式中，该方法还包括：发送配置信息，该配置信息用于配置该第一资源。
第三方面，提供了一种链路失败恢复的方法，该方法包括：发送第一请求信息，该第一请求信息用于指示链路失败的M个小区和/或N个第一参考信号信息，其中，该第一参考信号信息用于恢复链路失败的小区的链路，M≥1，N≥1，且M，N均的整数；检测该M个小区的响应信息；在未检测到该M个小区中的第i个小区的响应信息的情况下，发送第二请求信息，该第二请求信息用于指示第i个小区和/或用于恢复该第i个小区的第二参考信号信息，i为正整数，且1≤i≤M。
在一些可能的实现方式中，在检测到该M个小区中的第j个小区的响应信息的情况下，该第二请求信息还用于指示该第j个小区的和/或该第j个小区的确认信息，其中，j为正整数，且1≤j≤M。
在一些可能的实现方式中，该发送第一请求信息包括：在第一资源上发送该第一请求 信息，该第一资源为免授权的PUSCH资源，或者该第一资源为PUCCH资源。
在一些可能的实现方式中，该方法还包括：接收高层信令，该高层信令用于指示该第一资源。
在一些可能的实现方式中，该用于指示该链路失败的M个小区中的至少一个小区和/或N个参考信号信息中的至少一个参考信号信息的请求信息的传输次数小于或等于预设次数阈值或网络设备配置的次数阈值。
在一些可能的实现方式中，在发送该第一请求信息之前，该方法还包括：确定该L个小区中至少存在一个小区链路失败；或确定该L个小区中至少存在一个小区链路失败，以及用于恢复该至少一个小区的链路的参考信号。
在一些可能的实现方式中，该第二请求信息中用于指示链路失败的M个小区中的第k个小区对应的参考信号信息为q个参考信号信息，1≤k≤M，1＜q＜N，且k、q均为整数。
在一些可能的实现方式中，该检测该M个小区的响应信息包括：根据该q个参考信号信息的优先级顺序，检测该第k个小区对应的响应信息。
在一些可能的实现方式中，该根据该q个参考信号信息的优先级顺序，检测该第k个小区响应信息包括：在第p个时间窗口根据该q个参考信号信息中的第p个优先级排序的参考信号信息，检测该第k个小区对应的响应信息，1≤p≤q。
在一些可能的实现方式中，该方法还包括：在该第p个时间窗口内根据第p个优先级排序未检测到该第k个小区对应的的响应信息后，发送第五请求信息，该第五请求信息用于指示未在该第p个时间窗口检测到该第k个小区对应的响应信息。
在一些可能的实现方式中，该方法还包括：在该第p个时间窗口内根据第p个优先级排序未检测到该第二请求信息的响应信息后，在第p+1个时间窗口根据该q个参考信号信息的第p+1个优先级排序的参考信号信息，检测该第二请求信息的响应信息，该第p+1个时间窗口为晚于该第p个时间窗口的时段。
在一些可能的实现方式中，该第五请求信息承载在该第二资源。
第四方面，提供了一种链路失败恢复的方法，该方法包括：接收第一请求信息，该第一请求信息用于指示链路失败的M个小区和/或N个第一参考信号信息，其中，该第一参考信号信息用于恢复链路失败的小区的链路，M≥1，N≥1，且M，N均的整数；接收第二请求信息，该第二请求信息用于指示第i个小区和/或用于恢复该第i个小区的第二参考信号信息，i为正整数，且1≤i≤M。
在一些可能的实现方式中，在接收该第二请求信息之前，该方法还包括：发送该第j个小区的响应信息；其中，该第二请求信息还用于指示该第j个小区的和/或该第j个小区的确认信息，其中，j为正整数，且1≤j≤M。
在一些可能的实现方式中，该接收第一请求信息包括：在第一资源上接收该第一请求信息，该第一资源为免授权的PUSCH资源，或者该第一资源为PUCCH资源。
在一些可能的实现方式中，该方法还包括：发送高层信令，该高层信令用于指示该第一资源。
在一些可能的实现方式中，该M个小区中的第k个小区的小区信息包括q个第一参考信号信息，k为正整数，1＜q≤N。
该M个小区中的第k个小区的小区信息可以包括多个第一参考信号，也就是说，网 络设备可以同时接收多个参考信号信息用于共同来恢复链路失败的该第k个小区，从而更进一步提高链路恢复成功的概率。
在一些可能的实现方式中，该发送该M个小区的响应信息包括：根据该q个参考信号信息，发送该第k个小区对应的响应信息。网络设备可以以波束扫描的方式根据该q个参考信号发送该响应信息，或者网络设备可以同时根据该q个参考信号中的一个或多个参考信号发送响应信息(此时该网络设备可以有多个panel)。
在一些可能的实现方式中，该发送该M个小区的的响应信息包括：根据该q个参考信号信息的优先级顺序，发送该第k个小区对应的响应信息。
q个参考信号信息的优先级可以是网络设备根据恢复该第k个小区的链路的成功率或参考信号的质量确定的，或者可以是根据参考信号信息的ID的顺序确定的，或者根据参考信号信息上报的顺序确定的。网络设备根据该q个参考信号信息的优先级顺序，分别发送该第k个小区对应的响应信息，这样可以提高响应信息传输成功的概率，也即链路失败恢复成功的概率。
应理解，本实施例中参考信号信息的优先级可以等效为恢复该第k个小区的链路的成功率顺序或参考信号的质量大小顺序，或者可以是参考信号信息的ID的顺序，或者参考信号信息上报的顺序，本发明还可以有其他描述方式，并不对此做限定。
在一些可能的实现方式中，该根据该参考信号信息的优先级顺序，发送该第k个小区对应的响应信息包括：在第p个时间窗口根据该q个参考信号信息中的第p个优先级排序的参考信号信息，发送该第k个小区对应的响应信息，1≤p≤q。
网络设备根据该q个参考信号信息中每个参考信号信息发送该第k个小区对应的响应信息可以是在对应的时间窗口上发送，这样避免了根据某一个参考信号发送第一请求信息的响应信息的等待时长太长，造成链路恢复时延较长，即本申请实施例提高了链路恢复的效率，减少了链路恢复时间。
在一些可能的实现方式中，该方法还包括：接收第五请求信息，该第五请求信息用于指示未在该第p个时间窗口检测到该第k个小区对应的响应信息。网络设备可以根据第五请求信息获知终端是否接收到响应信息，进而获知终端还会接续发送请求信息，这样网络设备可以提前做好链路恢复准备，更进一步节省时延。
在一些可能的实现方式中，该第五请求信息承载在该第二资源。
该第五请求信息可以承载于第二资源，即与第二请求信息占用相同的资源，即第五请求信息可以采用半静态资源，节省资源开销。
在一些可能的实现方式中，该方法还包括：在发送该M个小区的响应信息时，释放该第二资源。
网络设备在该M个小区全部恢复成功的情况下，可以释放第二资源。例如，网络设备可以在获知终端设备检测到该M个小区中每个小区对应的第二请求信息的响应信息时，或者网络设备可以在发送该M个小区中每个小区对应的第二请求信息的响应信息时，确定该M个小区全部恢复成功。或者网络设备获知终端在检测到该M个小区中一部分小区对应的第一请求信息的响应信息，另一部分小区对应的第二请求信息的响应信息时，确定该M个小区全部恢复成功。或者网络设备发送该M个小区中一部分小区对应的第一请求信息的响应信息，另一部分小区对应的第二请求信息的响应信息时，确定该M个小区全 部恢复成功。或者网络设备发送该M个小区中每个小区的第二请求信息的响应信息时，确定该M个小区全部恢复成功。应理解，网络设备获知终端设备检测到第一请求信息的响应信息或第二请求信息的响应信息的方式可以为网络设备接收到小区的确认信息。
M是等于1还是大于1，可以取决于基站配置的第一资源大小，或者发生链路失败的资源小区情况。这样本申请实施例可以避免终端设备频繁发送链路失败恢复请求信息，节省功耗开销。
第五方面，提供了一种链路失败恢复的方法，该方法包括：在第一资源上发送第一请求信息，该第一请求信息用于指示L个小区中的至少一个小区的链路失败，该L为大于1的整数；发送M个第二请求信息，该M个第二请求信息中的每个第二请求信息用于指示链路失败的小区的小区信息，M≥1，且M为整数。
在一些可能的实现方式中，该小区信息包括对应的链路失败的小区的小区标识和用于恢复该对应的链路失败的小区的第一参考信号信息。
在一些可能的实现方式中，该方法还包括：检测该M个第二请求信息的响应信息；在未检测到该M个第二请求信息中的第s个第二请求信息对应的响应信息的情况下，发送第三请求信息，该第三请求信息用于指示该第s个小区和/或用于恢复该第s个小区的第二参考信号信息，s∈{1，2，…，M}。
在一些可能的实现方式中，该M个第二请求信息中的第s个第二请求信息指示的第s个小区对应的参考信号信息为q个参考信号信息，1≤s≤M，且k为整数。
在一些可能的实现方式中，该检测该第二请求信息的响应信息包括：根据该q个参考信号信息的优先级顺序，检测该第s个小区对应的第二请求信息的响应信息。
在一些可能的实现方式中，该根据该q个参考信号信息的优先级顺序，检测该第s个小区对应的第二请求信息的响应信息包括：在第p个时间窗口根据该第二请求信息指示的该q个参考信号信息的第p个优先级排序的参考信号信息，检测该第二请求信息的响应信息，1≤p≤q。
在一些可能的实现方式中，该方法还包括：在该第p个时间窗口内根据第p个优先级排序未检测到该第二请求信息的响应信息后，发送第五请求信息，该第五请求信息用于指示未在该第p个时间窗口检测到该第二请求信息的响应信息。
在一些可能的实现方式中，该方法还包括：在该第p个时间窗口内根据第p个优先级排序未检测到该第二请求信息的响应信息后，在第p+1个时间窗口根据该q个参考信号信息的第p+1个优先级排序的参考信号信息，检测该第二请求信息的响应信息，该第p+1个时间窗口为晚于该第p个时间窗口的时段。
在一些可能的实现方式中，用于该第五请求信息的资源与用于承载第s个第二请求信息的资源相同。
在一些可能的实现方式中，该发送M个第二请求信息包括：在第二资源上发送该第s个第二请求信息；其中，该发送第三请求信息包括：在该第二资源上，发送该第三请求信息。
在一些可能的实现方式中，该方法还包括：在检测到该第s个小区的响应信息时，释放该第二资源。
在一些可能的实现方式中，该第二资源为高层信令配置的，或该第二资源为与该第一资源或该第一请求信息关联的资源。
在一些可能的实现方式中，该方法还包括：在第四资源上，重新发送该第一请求信息；
接收该重新发送的第一请求信息的响应信息，该重新发送的第一请求信息的响应信息用于指示第三资源；其中，该发送第三请求信息包括：在该第三资源上发送该第三请求信息。
在一些可能的实现方式中，该第四资源和该第一资源相同。
在一些可能的实现方式中，L≤W≤X·L，W为该第一请求信息的传输次数的最大值，X为用于指示该第s个小区和/或用于恢复该第s个小区的小区信息的请求信息的传输次数的最大值。
在一些可能的实现方式中，该发送M个第二请求信息包括：根据该M个第二请求信息中每个第二请求信息对应的小区的优先级高低，发送该M个第二请求信息。
在一些可能的实现方式中，该小区的优先级高低是由发生链路失败的先后确定的，或者该小区的优先级高低是由小区的标识的取值大小确定的，或者该小区的优先级高低是由小区属于主小区或辅小区确定的。
在一些可能的实现方式中，该方法还包括：接收配置信息，该配置信息用于指示该第一资源。
第六方面，提供了一种链路失败恢复的方法，该方法包括：在第一资源接收第一请求信息，该第一请求信息用于指示L个小区中的至少一个小区的链路失败，该L为大于1的整数；接收第二请求信息，该第二请求信息用于指示链路失败的小区的小区信息，M≥1，且M为整数。
在一些可能的实现方式中，该小区信息包括对应的链路失败的小区的小区标识和用于恢复该对应的链路失败的小区的第一参考信号信息。
在一些可能的实现方式中，该方法还包括：接收第三请求信息，该第三请求信息用于指示该第s个小区的小区标识和/或用于恢复该第s个小区的第二参考信号信息，s∈{1，2，…，M}。
在一些可能的实现方式中，该接收该第二请求信息包括：在第二资源上接收该第s个第二请求信息；其中，该接收第三请求信息包括：在该第二资源上，接收该第三请求信息。
在一些可能的实现方式中，该方法还包括：在第四资源上接收第一请求信息；发送该第一请求信息的响应信息，该第一请求信息的响应信息用于指示第三资源；该接收第三请求信息包括：在该第三资源上，接收该第三请求信息。
在一些可能的实现方式中，该第四资源和该第一资源相同。
在一些可能的实现方式中，在该第二资源接收该第二请求信息之前，该方法还包括：发送该第一请求信息的响应信息，该响应信息用于指示或激活该第二资源。
在一些可能的实现方式中，在该第二资源接收该第二请求信息之前，该方法还包括：发送高层信令，该高层信令用于配置该第二资源。
在一些可能的实现方式中，该第二资源为与该第一资源或该第一请求信息关联的资源。
在一些可能的实现方式中，该方法还包括：发送配置信息，该配置信息用于配置该第 一资源。
在一些可能的实现方式中，该M个小区中的第k个小区的小区信息包括q个第一参考信号信息，k为正整数，1＜q≤N。
该M个小区中的第k个小区的小区信息可以包括多个第一参考信号，也就是说，网络设备可以同时接收多个参考信号信息用于共同来恢复链路失败的该第k个小区，从而更进一步提高链路恢复成功的概率。
在一些可能的实现方式中，该发送该M个小区的响应信息包括：根据该q个参考信号信息，发送该第k个小区对应的响应信息。网络设备可以以波束扫描的方式根据该q个参考信号发送该响应信息，或者网络设备可以同时根据该q个参考信号中的一个或多个参考信号发送响应信息(此时该网络设备可以有多个panel)。
在一些可能的实现方式中，该发送该M个小区的的响应信息包括：根据该q个参考信号信息的优先级顺序，发送该第k个小区对应的响应信息。
q个参考信号信息的优先级可以是网络设备根据恢复该第k个小区的链路的成功率或参考信号的质量确定的，或者可以是根据参考信号信息的ID的顺序确定的，或者根据参考信号信息上报的顺序确定的。网络设备根据该q个参考信号信息的优先级顺序，分别发送该第k个小区对应的响应信息，这样可以提高第二请求信息的响应信息传输成功的概率，也即链路失败恢复成功的概率。
应理解，本实施例中参考信号信息的优先级可以等效为恢复该第k个小区的链路的成功率顺序或参考信号的质量大小顺序，或者可以是参考信号信息的ID的顺序，或者参考信号信息上报的顺序，本发明还可以有其他描述方式，并不对此做限定。
在一些可能的实现方式中，该根据该参考信号信息的优先级顺序，发送该第k个小区对应的响应信息包括：在第p个时间窗口根据该q个参考信号信息中的第p个优先级排序的参考信号信息，发送该第k个小区对应的响应信息，1≤p≤q。
网络设备根据该q个参考信号信息中每个参考信号信息发送该第k个小区对应的响应信息可以是在对应的时间窗口上发送，这样避免了根据某一个参考信号发送第二请求信息的响应信息的等待时长太长，造成链路恢复时延较长，即本申请实施例提高了链路恢复的效率，减少了链路恢复时间。
在一些可能的实现方式中，该方法还包括：接收第五请求信息，该第五请求信息用于指示未在该第p个时间窗口检测到该第k个小区对应的响应信息。网络设备可以根据第五请求信息获知终端是否接收到响应信息，进而获知终端还会接续发送请求信息，这样网络设备可以提前做好链路恢复准备，更进一步节省时延。
在一些可能的实现方式中，该第五请求信息承载在该第二资源。
该第五请求信息可以承载于第二资源，即与第二请求信息占用相同的资源，即第五请求信息可以采用半静态资源，节省资源开销。
在一些可能的实现方式中，该方法还包括：在发送该M个小区的响应信息时，释放该第二资源。
网络设备在该M个小区全部恢复成功的情况下，可以释放第二资源。例如，网络设备可以在获知终端设备检测到该M个小区中每个小区对应的第二请求信息的响应信息时，或者网络设备可以在发送该M个小区中每个小区对应的第二请求信息的响应信息时，确 定该M个小区全部恢复成功。或者网络设备获知终端在检测到该M个小区中一部分小区对应的第二请求信息的响应信息，另一部分小区对应的第三请求信息的响应信息时，确定该M个小区全部恢复成功。或者网络设备发送该M个小区中一部分小区对应的第二请求信息的响应信息，另一部分小区对应的第三请求信息的响应信息时，确定该M个小区全部恢复成功。或者网络设备发送该M个小区中每个小区的第三请求信息的响应信息时，确定该M个小区全部恢复成功。应理解，网络设备获知终端设备检测到第二请求信息的响应信息或第三请求信息的响应信息的方式可以为网络设备接收到小区的确认信息。
在一些可能的实现方式中，网络设备在第四资源上重新接收第一请求信息；发送该重新发送的第一请求信息的响应信息，该重新发送的第一请求信息的响应信息用于指示第三资源；其中，该接收第三请求信息包括：在该第三资源上，接收该第三请求信息。
在一些可能的实现方式中，W≤X·L，W为该第一请求信息的传输次数的最大值，X为该M个小区中的任一个小区的小区信息的请求信息的传输次数的最大值。
M是等于1还是大于1，可以取决于基站配置的第二资源大小，或者发生链路失败的资源小区情况。这样本申请实施例可以避免终端设备频繁发送链路失败恢复请求信息，节省功耗开销。
第七方面，提供了一种确定传输资源的装置，该装置可以是终端，也可以是终端内的芯片。该装置具有实现上述第一方面、第三方面或第五方面，及各种可能的实现方式的功能。该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。该硬件或软件包括一个或多个与上述功能相对应的模块。
在一种可能的设计中，该装置包括：处理模块和收发模块，所述收发模块例如可以是收发器、接收器、发射器中的至少一种，该收发模块可以包括射频电路或天线。该处理模块可以是处理器。
可选地，所述装置还包括存储模块，该存储模块例如可以是存储器。当包括存储模块时，该存储模块用于存储指令。该处理模块与该存储模块连接，该处理模块可以执行该存储模块存储的指令或源自其他的指令，以使该装置执行上述第一方面、第三方面或第五方面，或其任意一项的方法。
在另一种可能的设计中，当该装置为芯片时，该芯片包括：处理模块，可选地，该芯片还包括收发模块，收发模块例如可以是该芯片上的输入/输出接口、管脚或电路等。处理模块例如可以是处理器。该处理模块可执行指令，以使该终端内的芯片执行上述第一方面、第三方面或第五方面，以及任意可能的实现的通信方法。
可选地，该处理模块可以执行存储模块中的指令，该存储模块可以为芯片内的存储模块，如寄存器、缓存等。该存储模块还可以是位于通信设备内，但位于芯片外部，如只读存储器(read-only memory，ROM)或可存储静态信息和指令的其他类型的静态存储设备，随机存取存储器(random access memory，RAM)等。
其中，上述任一处提到的处理器，可以是一个通用中央处理器(CPU)，微处理器，特定应用集成电路(application-specific integrated circuit，ASIC)，或一个或多个用于控制上述各方面通信方法的程序执行的集成电路。
第八方面，提供了一种装置，该装置可以是网络设备，也可以是网络设备内的芯片。该装置具有实现上述第二方面、第四方面或第六方面，及各种可能的实现方式的功能。该 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。该硬件或软件包括一个或多个与上述功能相对应的模块。
在一种可能的设计中，该装置包括：收发模块，可选地，该装置还包括处理模块，所述收发模块例如可以是收发器、接收器、发射器中的至少一种，该收发模块可以包括射频电路或天线。该处理模块可以是处理器。可选地，所述装置还包括存储模块，该存储模块例如可以是存储器。当包括存储模块时，该存储模块用于存储指令。该处理模块与该存储模块连接，该处理模块可以执行该存储模块存储的指令或源自其他的指令，以使该装置执行上述第二方面、第四方面或第六方面，及各种可能的实现方式的通信方法。在本设计中，该装置可以为网络设备。
在另一种可能的设计中，当该装置为芯片时，该芯片包括：收发模块，可选地，该装置还包括处理模块，收发模块例如可以是该芯片上的输入/输出接口、管脚或电路等。处理模块例如可以是处理器。该处理模块可执行指令，以使该终端内的芯片执行上述第二方面、第四方面或第六方面，以及任意可能的实现的通信方法。可选地，该处理模块可以执行存储模块中的指令，该存储模块可以为芯片内的存储模块，如寄存器、缓存等。该存储模块还可以是位于通信设备内，但位于芯片外部，如只读存储器(read-only memory，ROM)或可存储静态信息和指令的其他类型的静态存储设备，随机存取存储器(random access memory，RAM)等。
其中，上述任一处提到的处理器，可以是一个通用中央处理器(CPU)，微处理器，特定应用集成电路(application-specific integrated circuit，ASIC)，或一个或多个用于控制上述各方面通信方法的程序执行的集成电路。
第九方面，提供了一种计算机存储介质，该计算机存储介质中存储有程序代码，该程序代码用于指示执行上述第一方面、第三方面或第五方面，及其任意可能的实现方式中的方法的指令。
第十方面，提供了一种计算机存储介质，该计算机存储介质中存储有程序代码，该程序代码用于指示执行上述第二方面、第四方面或第六方面，及其任意可能的实现方式中的方法的指令。
第十一方面，提供了一种包含指令的计算机程序产品，其在计算机上运行时，使得计算机执行上述第一方面、第三方面或第五方面，或其任意可能的实现方式中的方法。
第十二方面，提供了一种包含指令的计算机程序产品，其在计算机上运行时，使得计算机执行上述第二方面、第四方面或第六方面，或其任意可能的实现方式中的方法。
第十三方面，提供了一种通信系统，该通信系统包括具有实现上述第一方面的各方法及各种可能设计的功能的装置和上述具有实现上述第二方面的各方法及各种可能设计的功能的装置。
第十四方面，提供了一种通信系统，该通信系统包括具有实现上述第三方面的各方法及各种可能设计的功能的装置和上述具有实现上述第四方面的各方法及各种可能设计的功能的装置。
第十五方面，提供了一种通信系统，该通信系统包括具有实现上述第五方面的各方法及各种可能设计的功能的装置和上述具有实现上述第六方面的各方法及各种可能设计的功能的装置。
第十六方面，提供了一种处理器，用于与存储器耦合，用于执行上述第一方面至第六方面中任一方面或其任意可能的实现方式中的方法。
第十七方面，提供了一种芯片，芯片包括处理器和通信接口，该通信接口用于与外部器件或内部器件进行通信，该处理器用于实现上述第一方面、第三方面或第五方面，或其任意可能的实现方式中的方法。
可选地，该芯片还可以包括存储器，该存储器中存储有指令，处理器用于执行存储器中存储的指令或源于其他的指令。当该指令被执行时，处理器用于实现上述第一方面、第三方面或第五方面，或其任意可能的实现方式中的方法。
可选地，该芯片可以集成在终端上。
第十八方面，提供了一种芯片，芯片包括处理器和通信接口，该通信接口用于与外部器件或内部器件进行通信，该处理器用于实现上述第二方面、第四方面或第六方面中任一方面或其任意可能的实现方式中的方法。
可选地，该芯片还可以包括存储器，该存储器中存储有指令，处理器用于执行存储器中存储的指令或源于其他的指令。当该指令被执行时，处理器用于实现上述第二方面、第四方面或第六方面，或其任意可能的实现方式中的方法。
可选地，该芯片可以集成在网络设备上。
基于上述技术方案，终端在检测到多个小区中的任意一个小区的链路失败，或者多个小区中的任意多个小区的链路失败，都可以在同一个资源上(即第一资源)向网络设备发送第一请求信息，以告知网络设备该L个小区中至少存在一个小区的链路发生失败。这样在多载波场景中，相对于每个小区的链路失败占用一个资源发送一个请求信息，本申请实施例节省了资源开销。
附图说明
图1是本申请一个通信系统的示意图；
图2是传统方案中一种链路失败恢复的示意性流程图；
图3是本申请一个实施例的链路失败恢复的方法的示意性流程图；
图4是本申请一个具体实施例的链路失败恢复的方法的示意图；
图5是本申请另一个具体实施例的链路失败恢复的方法的示意图；
图6是本申请另一个实施例的链路失败恢复的方法的示意性流程图；
图7是本申请另一个具体实施例的链路失败恢复的方法的示意图；
图8是本申请另一个实施例的链路失败恢复的方法的示意性流程图；
图9是本申请一个实施例的链路失败恢复的方法的示意图；
图10是本申请一个实施例的链路失败恢复的装置的示意性框图；
图11是本申请一个实施例的链路失败恢复的装置的示意性结构图；
图12是本申请另一个实施例的链路失败恢复的装置的示意性框图；
图13是本申请另一个实施例的链路失败恢复的装置的示意性结构图；
图14是本申请一个具体实施例的链路失败恢复的装置的示意图；
图15是本申请另一个具体实施例的链路失败恢复的装置的示意图；
图16是本申请另一个具体实施例的链路失败恢复的装置的示意图；
图17是本申请另一个具体实施例的链路失败恢复的装置的示意图。
具体实施方式
下面将结合附图，对本申请中的技术方案进行描述。
本申请实施例的技术方案可以应用于各种通信系统，例如：全球移动通信(global system for mobile communications，GSM)系统、码分多址(code division multiple access，CDMA)系统、宽带码分多址(wideband code division multiple access，WCDMA)系统、通用分组无线业务(general packet radio service，GPRS)、长期演进(long term evolution，LTE)系统、LTE频分双工(frequency division duplex，FDD)系统、LTE时分双工(time division duplex，TDD)、通用移动通信系统(universal mobile telecommunication system，UMTS)、全球互联微波接入(worldwide interoperability for microwave access，WiMAX)通信系统、未来的第五代(5th generation，5G)系统或新无线(new radio，NR)等。
本申请实施例中的终端设备可以指用户设备(user equipment，UE)、接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。终端设备还可以是蜂窝电话、无绳电话、会话启动协议(session initiation protocol，SIP)电话、无线本地环路(wireless local loop，WLL)站、个人数字助理(personal digital assistant，PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备，未来5G网络中的终端设备或者未来演进的公用陆地移动通信网络(public land mobile network，PLMN)中的终端设备等，本申请实施例对此并不限定。
本申请实施例中的网络设备可以是用于与终端设备通信的设备，该网络设备可以是全球移动通信(global system for mobile communications，GSM)系统或码分多址(code division multiple access，CDMA)中的基站(base transceiver station，BTS)，也可以是宽带码分多址(wideband code division multiple access，WCDMA)系统中的基站(NodeB，NB)，还可以是LTE系统中的演进型基站(evoled NodeB，eNB或eNodeB)，还可以是云无线接入网络(cloud radio access network，CRAN)场景下的无线控制器，或者该网络设备可以为中继站、接入点、车载设备、可穿戴设备以及未来5G网络中的网络设备或者未来演进的PLMN网络中的网络设备等，本申请实施例并不限定。
在本申请实施例中，终端设备或网络设备包括硬件层、运行在硬件层之上的操作系统层，以及运行在操作系统层上的应用层。该硬件层包括中央处理器(central processing unit，CPU)、内存管理单元(memory management unit，MMU)和内存(也称为主存)等硬件。该操作系统可以是任意一种或多种通过进程(process)实现业务处理的计算机操作系统，例如，Linux操作系统、Unix操作系统、Android操作系统、iOS操作系统或windows操作系统等。该应用层包含浏览器、通讯录、文字处理软件、即时通信软件等应用。并且，本申请实施例并未对本申请实施例提供的方法的执行主体的具体结构特别限定，只要能够通过运行记录有本申请实施例的提供的方法的代码的程序，以根据本申请实施例提供的方法进行通信即可，例如，本申请实施例提供的方法的执行主体可以是终端设备或网络设备，或者，是终端设备或网络设备中能够调用程序并执行程序的功能模块。
另外，本申请的各个方面或特征可以实现成方法、装置或使用标准编程和/或工程技 术的制品。“制品”可涵盖从任何计算机可读器件、载体或介质访问的计算机程序。例如，计算机可读介质可以包括，但不限于：磁存储器件(例如，硬盘、软盘或磁带等)，光盘(例如，压缩盘(compact disc，CD)、数字通用盘(digital versatile disc，DVD)等)，智能卡和闪存器件(例如，可擦写可编程只读存储器(erasable programmable read-only memory，EPROM)、卡、棒或钥匙驱动器等)。另外，本文描述的各种存储介质可代表用于存储信息的一个或多个设备和/或其它机器可读介质。术语“机器可读介质”可包括但不限于，无线信道和能够存储、包含和/或承载指令和/或数据的各种其它介质。
图1是本申请一个通信系统的示意图。图1中的通信系统可以包括至少一个终端(例如终端10、终端20、终端30、终端40、终端50和终端60)和网络设备70。网络设备70用于为终端提供通信服务并接入核心网，终端可以通过搜索网络设备70发送的同步信号、广播信号等接入网络，从而进行与网络的通信。图1中的终端10、终端20、终端30、终端40和终端60可以与网络设备70进行上下行传输。例如，网络设备70可以向终端10、终端20、终端30、终端40和终端60发送下行信号，也可以接收终端10、终端20、终端30、终端40和终端60发送的上行信号。
此外，终端40、终端50和终端60也可以看作一个通信系统，终端60可以向终端40和终端50发送下行信号，也可以接收终端40和终端50发送的上行信号。
需要说明的是，本申请实施例可以应用于包括一个或多个网络设备的通信系统中，也可以应用于包括一个或多个终端的通信系统中，本申请对此不进行限定。
为方便理解本申请，下面介绍与本申请相关的术语：
1、控制资源集合(control resource set，CORESET)
为了提高终端设备盲检控制信道的效率，NR标准制定过程中提出了控制资源集合的概念。网络设备可为终端设备配置一个或多个资源集合，用于发送物理下行控制信道(physical downlink control channel，PDCCH)。网络设备可以在终端设备对应的任一控制资源集合上，向终端设备发送控制信道。此外，网络设备还需要通知终端设备所述控制资源集合的相关联的其他配置，例如搜索空间集合等。每个控制资源集合的配置信息存在差异，例如频域宽度差异、时域长度差异等。可扩展地，本申请中的控制资源集合可以是5G移动通信系统定义的CORESET或控制区域(control region)或增强物理下行控制信道(enhanced-physical downlink control channel，ePDCCH)集合(set)。
PDCCH所占用的时频位置可以称之为下行控制区域。在LTE中，PDCCH始终位于一个子帧的前m个(m可能的取值为1、2、3和4)符号。应注意，LTE中E-PDCCH和R-PDCCH的位置未处于前m个符号。
在NR中，下行控制区域可以由RRC信令通过控制资源集合(control resource set，CORESET)和搜索空间集合(search space set)灵活配置：
控制资源集合可配置PDCCH或控制信道单元(control channel element，CCE)的频域位置，时域的持续符号数(最大值为3)等信息；
搜索空间集合可配置PDCCH的检测周期以及偏移量，在一个时隙内的起始符号等信息。
例如，搜索空间集合可配置PDCCH周期为1个时隙，而时域起始符号为符号0，则终端设备可以在每个时隙的起始位置检测PDCCH。
2、同位置假设(quasi-collocation，QCL)信息
准共站/准共址QCL假设信息也可以称为QCL信息，QCL信息用于辅助描述终端设备接收波束赋形信息以及接收流程。
QCL信息用于指示两种参考信号之间的QCL关系，其中目标参考信号一般是可以是解调参考信号(demodulation reference signal，DMRS)，信道状态信息参考信号(channel state information reference signal，CSI-RS)等，而被引用的参考信号或者源参考信号一般可以是CSI-RS、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。
spatial relation：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。
spatial relation信息用于指示两种参考信号之间的空间发送参数关系，其中目标参考信号一般是可以是DMRS，SRS等，而被引用的参考信号或者源参考信号一般可以是CSI-RS、SRS、SSB等。
应理解，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索引可推断出目标参考信号的空间特性参数。
还应理解，满足空间相关性信息的两个参考信号或信道的空间特性参数是相同的，从而基于该源参考信号资源索引可推断出目标参考信号的空间特性参数。
其中，空间特性参数包括以下参数中的一种或多种：
入射角(angle of arrival，AoA)、主(dominant)入射角AoA、平均入射角、入射角的功率角度谱(power angular spectrum，PAS)、出射角(angle of departure，AoD)、主出射角、平均出射角、出射角的功率角度谱、终端设备发送波束成型、终端设备接收波束成型、空间信道相关性、网络设备发送波束成型、网络设备接收波束成型、平均信道增益、平均信道时延(average delay)、时延扩展(delay spread)、多普勒扩展(Doppler spread)、多普勒频移(doppler shift)、空间接收参数(spatial Rx parameters)等。
这些空间特性参数描述了源参考信号与目标参考信号的天线端口间的空间信道特性，有助于终端设备根据该QCL信息完成接收侧波束赋形或接收处理过程。应理解，终端设备可以根据QCL信息指示的源参考信号的接收波束信息，接收目标参考信号；这些空间特性参数还有助于终端设备根据该空间相关信息完成发射侧波束赋形或者发射处理过程，应理解，终端设备可以根据空间相关信息指示的源参考信号的发射波束信息，发射目标参考信号。
其中，为了节省网络设备对终端设备的QCL信息指示开销，作为一种可选的实施方式，网络设备可以指示PDCCH或物理下行共享信道(physical downlink shared channel，PDSCH)的解调参考信号与终端设备之前上报的多个参考信号资源中的一个或多个是满足QCL关系的，例如，该参考信号可以是CSI-RS。这里，每一个上报的CSI-RS资源索引对应了一个之前基于该CSI-RS资源测量时建立的一个收发波束对。应理解，满足QCL关系的两个参考信号或信道的接收波束信息是相同的，该终端设备可以根据该参考信号资源索引推断出接收PDCCH或PDSCH的接收波束信息。
现有标准中定义了四种类型的QCL，网络设备可以同时给终端设备配置一个或多种类型的QCL，如QCL type A+D，C+D：
QCL types A：Doppler shift，Doppler spread，average delay，delay spread
QCL types B：Doppler shift，Doppler spread
QCL types C：average delay，Doppler shift
QCL types D：Spatial Rx parameter
在本申请的举例中，某些参数的对应关系也可以应用于QCL描述下的场景。
应理解，本申请中适用于QCL假设的场景，也可以是两个参考信号，进一步或者是传输对象间的关联关系。
3、传输配置指示(transmission configuration indicator，TCI)状态
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。
4、同步信号广播信道块(synchronous signal/PBCH block，SS/PBCH block)
SS/PBCH block还可以称为SSB。其中，PBCH为物理广播信道(physical broadcast channel)的缩写。SSB包含主同步信号(primary synchronization signal，PSS)、辅同步信号(secondary synchronization signal，SSS)和PBCH中的至少一个。主要用于小区搜索、小区同步、承载广播信息的信号。
5、波束(beam)：
波束是一种通信资源，不同的波束可以认为是不同的通信资源。不同的波束可以发送相同的信息，也可以发送不同的信息。波束可以对应时域资源、空间资源和频域资源中的至少一项。
可选地，具有相同或者类型的通信特征的多个波束可以视为一个波束，一个波束内可以包括一个或多个天线端口，用于传输数据信道，控制信道和探测信号等。例如，发送波束可以是指信号经天线发射出去后在空间不同方向上形成的信号强度的分布；接收波束可以是指从天线上接收到的无线信号在空间不同方向上的信号强度分布。
具体地，波束可以是宽波束，也可以是窄波束，还可以是其他类型的波束。形成波束的技术可以是波束成型技术也可以是其他技术手段，本申请对此不进行限定。其中，波束成型技术(Beamforming)可以是通过在空间上朝向特定的方向来实现更高的天线阵列增益。此外，波束可以分为网络设备的发送波束和接收波束，与终端的发送波束和接收波束。网络设备的发送波束用于描述网络设备接收侧波束赋形信息，网络设备的接收波束用于描述网络设备接收侧波束赋形信息。终端的发送波束用于描述终端发送侧波束赋形信息，终端的接收波束用于描述接收侧波束赋形信息。
更具体地，波束成型技术包括数字波束成型技术、模拟波束成型技术和混合数字模拟波束成型技术。其中，模拟波束成型技术可以通过射频实现，例如，一个射频链路(RF chain)通过移相器来调整相位，从而控制模拟波束方向的改变。因此，一个RF chain在同一时刻只能打出一个模拟波束。此外，基于模拟波束的通信，需要发送端和接收端的波束对齐，否则无法正常传输信号。
应理解，形成一个波束的一个或多个天线端口也可以看作是一个天线端口集。
还应理解，波束还可以通过空间滤波器(spatial filter)或空间传输滤波器(spatial domain  transmission filter)体现，换句话说，波束也可以称为“空间滤波器”，其中发射波束称为“空间发射滤波器”，接收波束称为“空间接收滤波器”或“下行空间滤波器”。网络设备的接收波束或终端设备的发送波束还可以称为“上行空间滤波器”，网络设备的发送波束或终端设备的接收波束还可以称为“下行空间滤波器”。最优的N个波束对(Beam pair link，BPL)(一个BPL包括一个网络设备的发射波束和一个终端的接收波束，或者，一个BPL包括一个终端的发射波束和一个网络设备的接收波束)的选择。用于终端基于网络设备的波束扫描实现对网络设备的发射波束和/或终端的接收波束的选择，以及，网络设备基于终端的波束扫描实现对终端的发射波束和/或网络设备的接收波束的选择。
具体地，发射波束可以为基站发射波束，也可以为终端发射波束。当该发射波束为基站发射波束时，基站通过不同的发射波束向UE发送参考信号，UE通过同一个接收波束来接收基站通过不同的发射波束发送的参考信号，并基于接收信号确定基站的最优发射波束，然后将基站的最优发射波束反馈给基站，以便于基站对发射波束进行更新。当该发射波束为终端发射波束时，UE通过不同的发射波束向基站发送参考信号，基站通过同一个接收波束来接收UE通过不同的发射波束发送的参考信号，并基于接收信号确定UE的最优发射波束，然后将UE的最优发射波束反馈给UE，以便于UE对发射波束进行更新。其中，上述通过不同的发射波束发送参考信号的过程可以称为波束扫描，基于接收信号确定最优发射波束的过程可以称为波束匹配。
接收波束可以为基站接收波束，也可以为终端接收波束。当该接收波束为基站接收波束时，UE通过同一个发射波束向基站发送参考信号，基站采用不同的接收波束接收UE发送的参考信号，然后基于接收信号确定基站的最优接收波束，以对基站的接收波束进行更新。当该接收波束为UE的接收波束时，基站通过同一个发射波束向UE发送参考信号，UE采用不同的接收波束接收基站发送的参考信号，然后基于接收信号确定UE的最优接收波束，以对UE的接收波束进行更新。
需要说明的是，对于下行波束的训练，网络设备会配置参考信号资源集合的类型用于波束训练，当为参考信号资源集合配置的重复参数为“on”时，终端设备假设该参考信号资源集合中的参考信号使用相同的下行空间滤波器传输，也即使用相同的发送波束传输；此时，一般情况下，终端设备会使用不同的接收波束接收上述参考信号资源集合中的参考信号，训练出终端设备最好的接收波束，可选地，终端设备可以上报UE测量的最好的N个参考信号的信道质量。当为参考信号资源集合配置的重复参数为“off”时，终端设备不会假设该参考信号资源集合中的参考信号使用相同的下行空间滤波器传输，也即不假设网络设备使用相同的发送波束传输参考信号，此时终端设备通过测量该集合中参考信号的信道质量在该资源集合中选出最好的N个波束反馈给网络设备，一般情况下，此时，终端设备在此过程中使用相同的接收波束。
6、带宽区域(bandwidth part，BWP)
网络设备可为终端设备配置一个或多个下行/上行带宽区域，该BWP是由频域上连续的PRB组成，BWP为终端设备带宽内的一个子集。该BWP在频域上的最小粒度是1个PRB。系统可为终端设备配置一个或多个带宽区域，且所述多个带宽区域在频域上可以重叠(overlap)。
在单载波场景下，一个终端设备在同一时刻只能有一个激活的BWP，终端设备只能 在激活的BWP(active BWP)上接收数据/参考信号，或者发送数据/参考信号。
在本申请中，适用于BWP场景的情况中，特定的BWP也可以是一个特定的频率上的带宽集合，或者是多个RB组成的集合。
7、为了检测链路失败及恢复链路失败所配置的参考信号
为了检测和恢复链路故障，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，则判定为通信链路故障。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 OOS(out of sync))相同。
8、小区载波相关概念：
载波聚合(carrier aggregation，CA)：
通过将多个连续的或非连续的单元载波聚合成更大的带宽(例如，达到100MHz)，从而满足3GPP对带宽的需求。
单元载波(component carrier，CC)：
多载波聚合中的每个载波都可以称为“CC”，每个载波由一个或多个物理资源块(physical resource block，PRB)组成，每个载波上可以有各自对应的物理下行控制信道(physical downlink control channel，PDCCH)，调度各自CC的物理下行控制信道(physical downlink control channel，PDSCH)；还可以没有PDCCH，而是通过其他CC上的PDCCH调度PDSCH。终端可以在多个CC上接收数据时，又可以称为分量载波，组成载波，或成员载波等。
主小区(primary cell，PCell)：
PCell是CA的终端驻留的小区，CA的终端对应物理上行控制信道(physical uplink control channel，PUCCH)信道。
辅助主小区(primary secondary Cell，PSCell)：
PSCell是主基站(master eNodeB，MeNB)通过RRC连接信令配置给DC UE的在辅基站(secondary eNodeB，SeNB)上的一个特殊辅小区。
辅小区(secondary cell，SCell)：
SCell是指通过RRC连接信令配置给CA终端的小区，工作在SCC(辅载波)上， 可以为CA终端提供更多的无线资源。SCell可以只有下行，也可以上下行同时存在。
特殊小区(special cell，SpCell)：
对于双连接(dual connectivity，DC)场景，SpCell指主小区组(master cell group，MCG)的PCell或者辅小区组(secondary cell group，SCG)的PSCell；否则，如CA场景，SpCell指PCell。
MCG/SCG：
MCG是指主基站中为终端提供服务的小区所在的组为主小区组。在双连接模式下，MeNB关联的一组服务小区，包括PCell和一个或多个SCell。
SCG是指辅基站中为UE提供服务的小区所在的组为辅小区组。在双链接模式下，包括PSCell和0个或者多个SCell。
MeNB/SeNB：
MeNB是DC终端驻留小区所属的基站。
SeNB是MeNB通过RRC连接信令配置给DC UE的另一个基站。
在本申请实施例中，通信失败还可以称为通信链路失败、通信链路故障、链路故障、链路失败、通信故障、波束失败、波束故障等。在本申请实施例中，这些概念是相同的含义。该通信失败可以是指用于PDCCH的波束失败检测的参考信号的信号质量小于或者等于预设门限。通信链路故障后，终端设备需要从候选参考信号资源集合中选出信道质量信息(如RSRP、RSRQ、CQI、SINR等)高于预定门限的参考信号资源，用于恢复通信链路。
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，通信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，通信失败恢复请求信息又可以称为通信故障恢复请求信息、链路失败恢复请求信息、链路故障恢复请求信息、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。应理解，本申请实施例中通信失败恢复请求信息可以称为第一请求信息和或第二请求信息和或第三请求信息。
本申请实施例中，通信失败恢复响应信息又可以称为通信失败响应信息、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、通信链路失败恢复响应信息、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。应理解，本申请中，通信失败恢复响应信息可以简称为响应信息。
本申请实施例中，可选地，通信失败恢复请求可以是指在用于承载通信失败恢复请求的资源上发送信号，通信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的DCI(如BFR-RNTI加扰的DCI)，该通信失败恢复响应信息还可以是由上述DCI调度的数据，该通信失败恢复响应信息还可以是由上述DCI调度的数据的ACK。该通信失败恢复响应信息还可以是以下信息中的一种：小区无线网络临时标识C-RNTI加扰的DCI、调制编码方式小区特定无线网络临时标识MCS-C-RNTI加扰的DCI、专用搜索空间内的下行控制信息DCI、专用无线网络临时标识RNTI加扰的DCI、随机接入无线网络临时标识RA-RNTI加扰的DCI、包含预设状态值的DCI、包含传输配置指示TCI信息的DCI、所述发生链路失败的小区的准共址QCL指示信息或预设格式的DCI，所述预设格式的DCI指示新传数据。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。
应理解，本申请中，某小区的链路恢复失败可以理解为终端设备不再发送该小区对饮高的第一请求信息和/或第二请求信息和/或第三请求信息，也可以理解为停止链路失败恢复时钟计时，也可以理解为停止链路失败恢复计数器计数等。或者某小区的链路恢复失败可以理解为该小区对应的链路失败恢复时钟超时，和或链路失败恢复计数器计数超过最大次数或达到最大次数仍未收到该小区的响应信息。其中，链路失败恢复计数器用于计数链路失败恢复请求信息的发送次数。可选地，终端设备的媒体接入控制(media access control，MAC)层会维护一个链路失败恢复计时器(beam failure recovery timer)和链路失败恢复计数器(beam failure recovery counter)。该链路失败恢复计时器用于控制整个链路失败恢复的时间，该链路失败恢复计数器用于限制该终端设备发送链路失败恢复请求的次数，当链路失败恢复计数器达到最大值时，该终端设备认为链路失败恢复不成功，停止链路失败恢复过程。所述恢复计时器的恢复时间和所述恢复计数器的计数值可以是网络设备配置的，也可以是预设值。
应理解，本申请中，某小区的链路恢复成功可以理解为终端设备检测到该小区的响应信息。
应理解，本申请实施例中的“检测”可以理解为“接收”，还可以理解为“解码”。
应理解，本申请中，时间单元可以是LTE或者5G NR系统中定义的一个或多个无线帧，一个或多个子帧，一个或多个时隙，一个或多个微时隙(mini slot)，一个或多个正交频分复用(orthogonal frequency division multiplexing，OFDM)符号等，也可以是多个帧或子帧构成的时间窗口，例如系统信息(system information，SI)窗口。
应理解，本申请各实施中，终端设备与网络设备之间的交互通常是对应的，即终端设备发送信息，相应的网络设备也会接收该信息；或者网络设备发送信息，相应的，终端设备也会接收该信息。进一步的，网络设备与终端设备收发信息所使用的物理资源，或所应 用的规则如周期，优先级顺序等也是对应的，本申请各实施例不作限制。
图2示出了传统方案中一种链路失败恢复的示意性流程图。
201，终端检测当前链路的工作状态。例如，终端可以检测得到当前链路失败。
应理解，本申请的链路可以理解为“波束”，即终端采用当前波束进行信号传输失败。
例如，当终端设备判断连续N次beam failure detection RS或者beam failure detection RS set中所有或部分参考信号的信道质量信息小于或等于第二预设门限时，该终端设备可以确定该终端设备与网络设备之间的链路发生故障。
应理解，本申请实施例中，该终端设备确定与网络设备之间的链路发生故障的方式并不限于以上举例，还可以由其他判断方式确定，本申请对此并不作任何限定。
202，终端选择新的链路，即终端选择新的波束。
例如，该终端设备根据候选参考信号集合(candidate beam identification RS)的信道质量信息，确定信道质量大于或者等于第一预设门限的参考信号(new identified beam)；这里的确定过程可以是测量所述候选参考信号集合的信道质量信息确定的。
203，终端在选择新的链路之后，向网络设备发送调度请求(scheduling request，SR)，该SR用于请求网络设备配置上行资源。
204，网络设备在接收到SR之后，由于无法获知终端存在多少上行数据需要传输，则网络设备向终端发送下行控制信息，该下行控制信息用于调度传输缓冲区状态报告(buffer status reporting，BSR)的上行资源。
205，终端在下行控制信息指示的上行资源上发送BSR，该BSR用于指示终端待发送数据的数据量的大小。
206，网络设备根据终端待发送数据的数据量大小，向终端发送资源分配信息，该资源分配信息用于指示传输PUSCH的资源。
207，终端在该资源分配信息指示的资源上发送PUSCH，且该PUSCH承载下行链路信息和发生链路失败的小区的索引。
208，若终端接收到链路失败恢复响应信息，则终端确定链路失败恢复成功。
但是，若终端没有接收到链路失败恢复响应信息，则链路失败恢复失败，从而使得链路通信中断，通信效率降低。
图3示出了本申请一个实施例的链路失败恢复的方法的示意性流程图。
301，终端在第一资源上发送第一请求信息，该第一请求信息用于指示L个小区中的至少一个小区的链路失败，L＞1，且L为整数。相应地，网络设备接收该第一请求信息。
具体地，终端在检测到L个小区中的任意一个小区的链路失败，或者L个小区中的任意多个小区的链路失败，都可以在同一个资源上(即第一资源)向网络设备发送第一请求信息，以告知网络设备该L个小区中至少存在一个小区的链路发生失败。这样在多载波场景中，相对于每个小区的链路失败占用一个资源发送一个请求信息，本申请实施例节省了资源开销。
需要说明的是，该L个小区中的每个小区可以分别对应一个网络设备，也可以是L个小区中的部分小区对应一个网络设备，还可以是L个小区只对应一个网络设备，本申请对此不进行限定。
还需要说明的是，该L的取值可以是网络设备和终端预先约定的(如通过协议预定义 的)，还可以是网络设备指示的，还可以是终端能力上报的。
应理解，该第一请求信息可以是“BFRQ1”。BFRQ1可以是与调度请求(scheduling request，SR)具有相同格式的信息。
可选地，终端可以在确定该L个小区中至少存在一个小区链路失败的情况下，触发该步骤301。
可选地，终端也可以在确定该L个小区中至少存在一个小区链路失败，且识别出新的用于恢复该至少一个小区的链路的参考信号信息的情况下，触发该步骤301。
该第一资源可以是PUCCH资源，还可以是PRACH资源，还可以是PUSCH资源等。该第一资源可以是专用于发送波束失败恢复请求信息的资源，还可以是用于其他功能的资源，例如波束管理过程中，上报波束信息(L1-RSRP或L1-SINR相关信息)资源，或者CSI获取阶段中，上报CQI相关信息(如PMI，RI，CQI，CRI等中的一种或多种信息)的资源。该第一资源可以是周期资源，还可以是半周期(semi-persistent)资源。
302，该终端在第二资源上发送第二请求信息，该第二请求信息用于指示该L个小区中的链路失败的M个小区的小区信息，M≥1，且M为整数。相应地，网络设备接收该第二请求信息。
具体地，该第二请求信息用于指示该L个小区中的链路失败的M个小区的小区标识，这样网络设备根据该第二请求信息可以获知该L个小区中具体发生链路失败的小区的相关信息。其中，在M＝1的情况下，该第二请求信息可以用于指示L个小区中的链路失败的任意一个小区的小区信息，这样相对于每个小区的请求信息占用不同的资源发送第二请求信息，节省了资源开销。在M＞1的情况下，该第二请求信息可以用于指示链路失败的多个小区的小区信息，这样相对于M个小区中的每个小区的请求信息分别发送或分时发送，本申请实施例节省了恢复时延。
需要说明的是，第二请求信息可以显示地指示该L个小区中的链路失败的M个小区的小区标识，例如直接携带小区标识。第二请求信息还可以隐式地指示该L个小区中的链路失败的M个小区的小区标识，例如通过网络设备配置小区和第二资源的关联关系，终端设备通过选择发送第二请求信息的第二资源，隐式通知网络设备其发生链路失败的小区是哪个小区(如第一小区关联第二资源a，第二小区关联第二资源b，终端设备发现第二小区发生链路失败后，通过第二资源b发送第二请求信息，即可隐式指示第二小区发生链路失败)。
应理解，该第二请求信息可以是“BFRQ2”。
可选地，小区信息可以包括小区标识和/或用于恢复小区的参考信号信息。
具体地，该M个小区的小区信息可以包括该M个小区的小区标识和/或用于恢复该M个小区的N个第一参考信号信息。恢复一个小区的第一参考信号可以是一个，也可以是多个，或者恢复多个小区的第一参考信号可以是同一个，本申请对此不进行限定。另外，小区标识和第一参考信号信息可以具有映射关系，这样在M个小区的小区信息只包括M个小区的小区标识的情况下，网络设备可以根据该M小区的标识确定对应的第一参考信号，或者在M个小区的小区信息只包括N个第一参考信号的情况下，网络设备可以根据该N个第一参考信号确定对应的小区标识。可选地，在配置了用于恢复第i个小区链路失败参考信号资源集合，和/或，终端设备识别到大于预设门限的该集合中的参考信号时，所述 M个小区的小区信息可以包括该第i个小区的标识和恢复该第i个小区的第一参考信号信息；否则，所述M个小区的小区信息包括该第i个小区的标识，还可以包括没有恢复该第i个小区的参考信号的状态信息，即终端没有识别到用于恢复该第i个小区的参考信号信息。
可选地，该第二资源可以是PUCCH资源，还可以是PUSCH资源，还可以是PRACH资源等。
应理解，本申请实施例中的“参考信号信息”可以是前述描述的“波束”，还可以是同位置假设(quasi-collocation，QCL)信息。
在一种可选地实施方式中，M可以大于1，终端设备可以根据第二资源的大小和或当前网络发生链路失败的小区的个数确定发送多少个(一个或多个)失败小区的小区信息。在该实施方式中，当多个小区发生链路失败时，终端设备可以发送多个发生链路失败的小区的小区信息，也即可以同时恢复多个小区的链路，有效减少多个小区链路恢复的时延。
在另一种可选地实施方式中，M只能等于1，也即无论有多少个小区发生链路失败，终端设备的该第二请求信息中只能携带一个发生链路失败的小区的小区信息，该种方法中，网络设备分配的第二资源可以较小，节省资源开销。
对于上述两种实施方式，若当前网络发生链路失败的小区个数大于第二资源可以承载的小区信息的个数，终端设备可以根据如下小区优先级，选择在第二请求信息中优先发送哪些链路失败的小区的小区信息。
可选地，该小区的优先级高低可以由发生链路失败的先后确定，如先发生链路失败的小区比后发送链路失败的小区的优先级高；或者所述小区的优先级高低可以由小区的标识的取值大小确定，如先标识小的小区比标识大的小区的优先级高；或者所述小区的优先级高低可以由小区属于主小区或辅小区确定，如先主小区比辅小区的优先级高；或者小区优先级可以由小区的带宽(所所占频域资源)大小确定，如所占带宽大的小区比所在带宽小的小区的优先级高；或者小区优先级可以由与该小区使用相同QCL信息或满足QCL关系QCLed的小区个数确定，如使用相同QCL信息多的小区比使用相同QCL信息少的小区优先级高，例如：小区1的PDCCH的QCL信息与2个小区的相同，小区2的PDCCH的QCL信息没有小区与之相同，那么小区1的优先级高于小区2的优先级。
可选地，在步骤302之后，终端可以检测该M个小区的响应信息，并根据检测结果发送第三请求信息。
具体地，终端在发送第二请求之后，每个小区根据该第二请求信息进行链路恢复。网络设备收到某一个小区(例如，第j个小区)的第二请求信息后，该第j个小区对应的网络设备可以向该终端反馈该第二请求信息的响应信息，若终端设备收到该第二请求信息的响应信息，则认为链路恢复成功。若终端设备发送某一个小区(例如，第i个小区)的第二请求信息后，网络设备没有收到该第i个小区的第二请求信息，或者网络设备收到该请求信息并发送第二请求信息的响应信息，但是终端设备没有检测到第二请求信息的响应信息，则终端可以重新发送该第i个小区的小区信息，直至发送小区信息的最大传输次数超过预设值或者第i个小区的恢复时间超过预设时长，则认为该第i个小区的链路没有恢复成功。在终端没有检测到第i个小区对应的第二请求信息的响应信息的情况下，终端向网络设备发送包括该第i个小区的小区标识和/或用于恢复该第i个小区的第二参考信号信息 的该第三请求信息，这样网络设备接收到该第三请求信息后，继续恢复第i个小区的链路。在终端检测到第j个小区对应的第二请求信息的响应信息的情况下，终端向网络设备发送包括该第j个小区的确认信息的第三请求信息，这样网络设备可以获知该第j个小区的链路恢复成功，从而可以释放第二资源，避免资源浪费，或者当网络设备或者该M个小区均链路恢复成功，便可及时释放第二资源(可以配置用于传输其他信息，或释放给其它用于传输上行数据或信号)。换句话说，终端无论在检测到，还是没有检测到某个小区对应的第二请求信息的响应信息的情况下，都会发送第三请求信息。
需要说明的是，若终端在发送第三请求信息后，还没有收到一些小区的该第三请求信息的响应信息，本申请实施例中，终端还可以接续发送请求信息，以恢复小区的链路。例如，终端可以一直发送请求信息，直到对应小区的链路恢复成功,或者终端发送(该小区的)请求信息的次数超过预设值(如传输次数最大值)和或终端链路失败恢复的时间超过预设时长(如链路失败恢复计时器超时)。或者若除了恢复成功的SCell外，其他所有SCell在该SCell的请求信息达到传输次数，仍收不到响应信息；或除了恢复成功的SCell外，其他所有该SCell对应的波束失败恢复(beam failure recovery，BFR)定时器(timer)超时时，释放(deactivate)该BFRQ2资源。再或者，若UE能成功接收第i个小区的响应信息(可以认为该第i个小区的链路失败恢复成功)，可以停止该小区的链路失败恢复计时器。该请求信息可以理解为小区信息。例如：当确定第一请求信息或第二请求信息中指示的所有小区链路恢复成功时，可以释放第二资源；或者当确定第一请求信息或第二请求信息中指示的所有小区中一部分小区链路恢复成功，剩余小区链路恢复失败时，可以释放第二资源；或者当UE确定第一请求信息或第二请求信息中指示的所有小区链路恢复失败时，可以释放第二资源。其中，小区的链路恢复成功可以指接收到该小区的响应信息，小区链路恢复失败可以指发送该小区的请求信息大于或等于最大次数仍未收到该小区的响应信息和或恢复该小区链路的时间超过预设时长。
在另一种实施方式中，终端设备在未检测到M个小区中至少一个小区的响应信息时才会发送第三请求信息，否则UE不会发送第三请求信息。
需要说明的是，第一参考信号信息和第二参考信号信息可以不同，也就是说，针对某个小区(例如，第一小区)的第一参考信号信息无法恢复该第一小区，则需要新识别第二参考信号信息来恢复该第一小区。
需要说明的是，i的取值可以与j的取值相同，也就是说，本申请实施例对于同一个小区在链路恢复成功或失败的不同场景下的反馈情况。
应理解，第i个小区或第j个小区都可以是该M个小区中的任意一个小区。
还应理解，该第三请求信息可以是“RE-BFRQ2”，还可以指第二请求信息的重传信息。
可选地，第j个小区的确认信息可以包括该第j个小区的小区标识(cell identity，cell ID)和/或确认标识(confirm)。
可选地，该第三请求信息包括该M个小区中链路恢复失败的小区的小区标识和用于恢复该链路恢复失败的小区的第二参考信号信息，以及该M个小区中链路恢复成功的小区的确认信息。
具体地，该第三请求信息包括该M个小区中链路恢复失败的第i个小区的小区标识和用于恢复该第i个小区的第二参考信号信息，以及该M个小区中链路恢复成功的第j个小 区的确认信息。链路恢复失败的小区的小区标识和用于恢复链路恢复失败的小区的第二参考信号可以与链路恢复成功的小区的确认信息携带在同一个第三请求信息中，也就是说，指示链路恢复失败的小区重新识别的参考信号信息，和指示恢复成功的小区的确认信息在同一个请求信息中发送，节省了信令开销。
需要说明的是，该第三请求信息中可以包括该M个小区中全部或部分链路恢复失败的小区的小区信息。还可以包括该M个小区中全部或部分链路恢复成功的小区的确认信息。
例如，如图4所示，终端发送第一请求信息(BFRQ1)，以及发送第二请求信息BFRQ2，其中，BFRQ2可以包括链路失败的M个小区的小区标识和每个小区对应的第一参考信号信息，小区ID1-参考信号信息b1、小区ID2-参考信号信息b2，小区ID3-参考信号信息b3，…，小区IDM-参考信号信息bM。在检测到小区ID2和小区ID3对应的BFRQ2的响应信息(BRRR2)，以及没有检测到小区ID1对应的BFRQ2的响应信息(BRRR2)的情况下，该第三请求信息(RE-BFRQ2)可以包括小区ID1-参考信号信息b4、小区ID2-确认标识，小区ID3-确认标识…。
可选地，终端还可以接收第一请求信息的响应信息，该第一请求信息的响应信息用于指示或激活该第二资源。
具体地，在一种实施方式中，网络设备在接收到第一请求信息之后，还可以发送该第一请求信息的响应信息。该第一请求信息的响应信息可以用于指示为该终端分配的第二资源，即网络设备为该终端分配资源。该第二资源可以是非周期资源(或称为动态资源)，该种方法下，网络设备根据当前网络中是否有链路失败的小区(通过第一请求信息指示)来确定是否要分配第二资源，若网络设备接收到第一请求信息，即可获知当前网络中有发生链路失败的小区，网络设备即可动态的分配第二资源，以便终端设备进一步上报有哪些小区发生链路失败，和或，上报恢复链路失败小区的新链路的信息(第一参考信号信息)。由于链路失败事件是突发事件，该种方法不需要提前预留发送链路失败恢复请求信息的周期资源，可以有效节省资源开销。
在另一种实施方式中，该第一请求信息的响应信息还可以用于激活第二资源，即原本为该终端分配的第二资源，由该第一请求信息的响应信息触发激活，该激活的第二资源为半静态资源(semi-persistent)或静态资源(periodic)。如第二资源可以是由第一请求信息后的第一请求信息的响应信息或第一请求信息后的下行控制信息(downlink control information，DCI)信令激活的半静态资源或静态资源(例如物理上行共享信道(physical uplink shared channel，PUSCH)，物理上行控制信道(physical uplink control channel，PUCCH)，或物理随机接入信道(physical random access channel，PRACH))。该种方法下，网络设备根据当前网络中是否有链路失败的小区(通过第一请求信息指示)来确定是否要激活第二资源，若网络设备接收到第一请求信息，即可获知当前网络中有发生链路失败的小区，网络设备激活第二资源，以便终端设备进一步上报有哪些小区发生链路失败，和或，上报恢复链路失败小区的新链路的信息(第一参考信号信息)，若链路恢复成功即可及时释放该资源，若链路没有恢复成功，终端设备可以继续在该资源上发送第二请求信息，直至链路失败恢复成功或链路失败恢复请求发送次数达到预设的最大值或链路失败恢复时长达到预设时长，即可释放该第二资源。该种方法在终端设备需要重传链路失败的小 区信息时，可以不用再通过第一请求信息的响应信息分配的资源发送重传信息，而是直接在该第二资源上发送重传信息，可以有效降低恢复时延。
可选地，该第二资源可以是高层信令或系统信息配置的，或为预设资源。
具体地，该第二资源可以是由网络设备为该终端配置的，并通过高层信令或系统信息发送给终端。该第二资源还可以网络设备和终端设备预先约定的，或者由终端提前设定，本申请对此不进行限定。该种方法在终端设备需要重传链路失败的小区信息时，可以不用再通过第一请求信息的响应信息分配的资源发送重传信息，而是直接在该第二资源上发送重传信息，可以有效减小链路恢复时延，提高链路恢复速度。
可选地，该第二资源还可以是与第一资源关联关系的资源。
具体地，该第二资源可以与第一资源具有映射关系，这样终端在获知第一资源的情况下，就可以确定出第二资源。可选地，该第一资源和第二资源的关联关系可以由主信息块(master information block，MIB)或系统消息块(system information block，SIB)等系统信息配置，或者由无线资源控制(radio resource control，RRC)或媒体访问控制(media access control，MAC)-控制元素(control element，CE)信令配置。该系统信息或信令可以在发送第一请求信息之前发送。可选地，该第一资源和第二资源的配置也可以通过上述系统信息或信令配置。该种方法在终端设备需要重传链路失败的小区信息时，可以不用再通过第一请求信息的响应信息分配的资源发送重传信息，而是直接在该第二资源上发送重传信息，可以有效减小链路恢复时延，提高链路恢复速度。
需要说明的是，网络设备可以为终端配置多个资源用于传输第一请求信息，以及为终端配置多个资源用于传输第二请求信息，终端可以从该多个用于传输第一请求信息的资源中选择一个或多个作为第一资源，还可以从多个用于传输第二请求信息的资源中选择一个或多个作为第二资源。其中，该多个用于传输第一请求信息的资源和该多个用于传输第二请求信息的资源分别可以由上述MIB或SIB等系统信息配置，或者由RRC或MAC-CE等信令配置。
可选地，该第二资源还可以是与第一请求信息关联的资源。可选地，网络设备可以通过MIB或SIB等系统信息，或者通过RRC或MAC-CE信令配置，多个用于发送第一请求信息的资源和多个用于发送第二请求信息的资源，以及该多个用于发送第一请求信息的资源与多个用于发送第二请求信息资源的关联关系，终端可以从该多个用于传输第一请求信息的资源中选择一个作为第一资源，还可以从多个用于传输第二请求信息的资源中选择一个作为第二资源。每个第一资源可以关联一个或多个第二资源，每个第一资源关联的第二资源可以大小不同。终端设备在哪个第一资源发送第一请求信息，那么，终端设备就在该发送第一请求信息的第一资源关联的第二资源上发送第二请求信息。
可选地，终端可以在该第二资源上发送该第三请求信息。
具体地，终端可以复用发送第二请求信息的资源发送该第三请求信息，无需等待第一请求信息的响应信息再分配资源发送第二请求信息，从而节省了资源分配的时间，此外，整体上提高了链路恢复速度。
应理解，第三请求信息占用的资源和第二请求信息占用的相同的第二资源，可以理解为承载第二请求信息的资源和承载第三请求信息的资源均为网络设备配置的某一个周期的或者半周期的资源，也可以理解为承载第二请求信息的资源和第三请求信息的资源是相 同的频域资源在不同时间单元上的重复。此外，该第三请求信息占用的资源和第二请求信息占用的资源还可以是同一个资源块中的不同位置的资源。
应理解，终端复用发送第二请求信息的资源发送该第三请求信息可以理解为终端使用发送第二请求信息的静态或半静态(semi-persistent或semi-static)的资源发送第三请求信息。
可选地，终端在检测到M个小区的全部的响应信息时，释放该第二资源。
具体地，终端在该M个小区全部恢复成功的情况下，可以释放第二资源。例如，终端可以在检测到该M个小区中每个小区对应的第二请求信息的响应信息时，确定该M个小区全部恢复成功。或者终端在检测到该M个小区中一部分小区对应的第二请求信息的响应信息，另一部分小区对应的第三请求信息的响应信息时，确定该M个小区全部恢复成功。或者终端在检测到该M个小区中每个小区的第三请求信息的响应信息时，确定该M个小区全部恢复成功。
可选地，终端设备确定M个小区中的K1个小区恢复失败，K2个小区恢复成功，K1+K2＝M，则释放第二资源，其中K1，K2均为大于或等于0的整数。该小区恢复失败是指终端设备发送该小区的链路失败恢复请求信息次数超过预设值(最大值)，和或，恢复该小区的链路时间超过预设时长，则认为该小区链路恢复失败。该小区恢复成功是指，终端设备收到该小区的链路失败恢复响应信息。
可选地，在终端检测该M个小区的响应信息时至少有一个小区的响应信息没有接收到的情况下，终端可以在第四资源上重新发送第一请求信息，并接收该重新发送的第一请求信息的响应信息，该重新发送的第一请求信息的响应信息用于指示第三资源，这样终端可以在该第三资源上发送第三请求信息。也就是说，该第三资源可以动态配置的，例如，由网络设备通过重新发送的第一请求信息的响应信息指示该第三资源。
可选地，该第四资源可以与第一资源相同。也就是说，对于第一请求信息来说，传输该第一请求信息的资源可以是静态的，即初次传输第一请求信息占用的资源，也可以用于重传该第一请求信息，不需要重新分配，节省了时间。
可选地，该M个小区中的第k个小区的小区信息包括q个第一参考信号信息，k为正整数，1＜q≤N。
具体地，该M个小区中的第k个小区的小区信息可以包括多个第一参考信号，也就是说，终端可以同时发送多个参考信号信息用于共同来恢复链路失败的该第k个小区，从而更进一步提高链路恢复成功的概率。特别是对于支持多波束传输的场景(例如终端有多个天线面板(panel))，使用该多个参考信号同时恢复链路。此外终端设备上报多个候选参考信号用于恢复链路的参考信号，可以使用该多个参考信号分时恢复链路，有效降低因为一个参考信号恢复失败后，重传第二请求信息带来的时延，提高恢复效率。
应理解，该M个小区中的每个小区的小区信息都可以包括多个第一参考信号信息，或者该M个小区中的部分小区的小区信息包括多个第一参考信号信息，本申请对此不进行限定。
还应理解，该第k个小区的小区信息还可以包括该第k个小区的小区标识。
可选地，终端检测M个小区中第k个小区对应的第二请求信息的响应信息具体可以是根据该q个参考信号信息的优先级顺序，检测该第二请求信息的响应信息。
具体地，q个参考信号信息的优先级可以是终端根据恢复该第k个小区的链路的成功率或参考信号的质量确定的，或者可以是根据参考信号信息的ID的顺序确定的，或者根据参考信号信息上报的顺序确定的。终端根据该q个参考信号信息的优先级顺序，可以分别检测该第k个小区对应的响应信息，这样可以提高第二请求信息的响应信息传输成功的概率，也即链路失败恢复成功的概率。
应理解，本实施例中参考信号信息的优先级可以等效为恢复该第k个小区的链路的成功率顺序或参考信号的质量大小顺序，或者可以是参考信号信息的ID的顺序，或者参考信号信息上报的顺序，本发明还可以有其他描述方式，并不对此做限定。
可选地，终端根据该q个参考信号信息中每个参考信号信息检测该第k个小区对应的响应信息可以是在对应的时间窗口上检测，这样避免了根据某一个参考信号检测第二请求信息的响应信息的等待时长太长，造成链路恢复时延较长，即本申请实施例提高了链路恢复的效率，减少了链路恢复时间。例如，在第p个时间窗口根据第p个优先级排序的参考信号信息检测该第二请求信息的响应信息，1≤p≤q。
需要说明的是，不同的参考信号信息可以具有不同的优先级，不同的优先级可以存在先后顺序，终端根据优先级排序的参考信号信息检测响应信息可以理解为终端根据参考信号信息的优先级的先后顺序进行检测响应信息。
可选地，终端根据该q个参考信号信息的优先级顺序，检测该第二请求信息的响应信息可以是在根据上一个参考信号信息(例如，第p个参考信号信息)检测该第二请求信息的响应信息失败的情况下，再根据下一个参考信号信息(例如，第p+1个参考信号信息)检测该第二请求信息的响应信息，从而更近一步节省信令开销。
需要说明的是，终端也可以分别在相应的时间窗口检测第p个参考信号信息和第p+1个参考信号信息。例如，如图5所示，BFRQ2包括第k个小区的标识(小区IDk)和用于恢复该第k个小区的参考信号信息b1，b2，b3…，终端在第一时间窗口根据参考信号信息b1检测该第二请求信息的响应信息(BFRR2-b1)，若在第一时间窗口没有检测到BFRR2-b1，则在第二时间窗口根据参考信号信息b2检测该第二请求信息的响应信息(BFRR2-b2)。若在第一时间窗口检测到BFRR2-b1，则可以不需要进行后面的检测。
应理解，终端在接收到第二请求信息的响应信息之后，可以通过该响应信息对应的第一参考信号信息接收物理下行共享信道(physical downlink shared channel，PDSCH)，物理下行控制信道(physical downlink control channel，PDCCH)，PUCCH，PUSCH，探测参考信号(sounding reference signal，SRS)，信道状态信息(channel state information，CSI)-参考信号(reference signal，RS)，追踪参考信号(tracking reference signal，TRS)中的至少一种。
可选地，在一种实施方式中，终端在根据一个参考信号信息(例如第p个参考信号信息)检测该第二请求信息的响应信息，若未检测到该第二请求信息的响应，还可以向网络设备发送第五请求信息，该第五请求信息用于指示未检测到该第p个参考信号对应的第二请求信息的响应信息，或者用于指示未在第p个参考信号信息对应的第p个时间窗口上检测到该第p个参考信号对应的第二请求信息的响应信息。在该实施方式中，网络设备接收到该第五请求信息后，获知终端设备未检测到该第p个参考信号信息对应的第二请求信息的响应信息，网络设备可以再根据第p+1个参考信号信息发送第二请求信息的响应信息。 否则若未再规定的时间内接收到该第五请求信息，网络设备可以认为链路恢复成功，网络设备可以不再发送第二请求信息的响应信息。可选地，该第p+1个参考信号信息对应的第p+1个时间窗口的起始位置位于发送第五请求信息后的Y个时间单元，X大于或等于0。
应理解上述方法还可以扩展至终端根据一组参考信号信息(包括两个及两个以上参考信号信息)检测第二请求信息的响应信息的情况。
可选地，该第五请求信息可以承载于第二资源，即与第二请求信息占用相同的资源，即第五请求信息可以采用半静态资源，节省资源开销。
可选地，该第五请求信息可以承载于第一资源，即与第一请求信息占用相同的资源，即第五请求信息可以采用半静态资源，节省资源开销。该第五请求信息可以与第一请求信息具有相同的格式。
可选地，在另一种实施方式中，终端在根据一个参考信号信息(例如第p个参考信号信息)检测该第二请求信息的响应信息，若检测到该第二请求信息的响应，还可以向终端设备发送确认信息，该确认信息用于指示检测到该第p个参考信号对应的第二请求信息的响应信息，或者用于指示在第p个参考信号信息对应的第p个时间窗口上检测到该第二请求信息的响应信息。网络设备在收到该确认信息后，可及时释放第二资源或即使停止响应信息的发送或获知链路失败恢复成功，有效节省资源开销。可选地，该确认信息可以承载与第二资源，即与第二请求信息占用相同的资源，即确认信息可以采用半静态资源，节省资源开销。若根据第p个参考信号信息未检测该第二请求信息的响应信息，则(在第二时间窗口)根据第p+1个参考信号信息检测该第二请求信息的响应信息。
可选地，第一请求信息的传输次数的最大值W，可以与用于指示某一个小区的小区信息的请求信息的传输次数最大值X具有大小关系。
应理解，该用于指示某一个小区的小区信息的请求信息可以包括上述第二请求信息，和/或上述第三请求信息。
在一种可选地实施方式中，第二资源是周期资源(也可以是静态资源)或半周期资源(也可以是半静态资源)，且允许M>1或者M＝1，在此实施方式中，W≤X·L。其中，M是等于1还是大于1，可以取决于基站配置的第二资源大小，或者发生链路失败的资源小区情况。该实施方式可以避免终端设备频繁发送链路失败恢复请求信息，费电。
在另一种可选地实施方式中，第二资源是周期资源(也可以是静态资源)或半周期资源(也可以是半静态资源)，且M＝1，L≤W≤X·L。这样可以保证每个链路失败的小区均有机会发送第二请求信息，或可以保证每个小区均有相同的机会恢复链路，还可以避免终端设备频繁发送链路失败恢复请求信息。
在另一种可选地实施方式中，第二资源是动态资源，X≤W≤X·L。这样可以保证每个链路失败的小区均有机会发送第二请求信息，或可以保证每个小区均有相同的机会恢复链路，还可以避免终端设备频繁发送链路失败恢复请求信息。
图6示出了本申请另一个实施例的链路失败恢复的方法的示意性流程图。
需要说明的是，在不作特别说明的情况下，本申请实施例中与图3-图5所示的实施例中相同的术语表示的含义相同。
还需要说明的是，本申请实施例与图3-图5所示的实施例中能够结合方案，为避免赘述，本申请对此不进行重复。
601，终端在第一资源上发送第一请求信息，该第一请求信息用于指示L个小区中的至少一个小区的链路失败，L＞1，且L为整数。相应地，网络设备接收该第一请求信息。
具体地，终端在检测到多个小区中的任意一个小区的链路失败，或者多个小区中的任意多个小区的链路失败，都可以在同一个资源上(即第一资源)向网络设备发送第一请求信息，以告知网络设备该L个小区中至少存在一个小区的链路发生失败。这样在多载波场景中，相对于每个小区的链路失败占用一个资源发送一个请求信息，本申请实施例节省了资源开销。
602，终端发送M个第二请求信息，该M个第二请求信息中的每个请求信息用于指示链路失败的小区的小区信息，M≥1，且M为整数。
具体地，每个第二请求信息可以用于指示一个链路失败的小区的小区信息，也可以用于指示多个链路失败的小区的小区信息，本申请对此不进行限定，为方便描述，下述实施例中，在不作特别说明的情况下，每个第二请求信息用于指示一个链路失败的小区的小区信息。
可选地，小区信息可以包括对应的链路失败的小区的小区标识和用于恢复所述对应的链路失败的小区的第一参考信号信息。
具体地，一个第二请求信息对应一个链路失败的小区的小区标识和用于恢复该小区的第一参考信号信息。
可选地，步骤602具体可以是终端根据该M个第二请求信息中每个第二请求信息对应的小区的优先级高低，发送该M个第二请求信息。
具体地，M个第二请求信息可以根据第二请求信息对应的小区的优先级高低，按照时间先后的顺序发送该M个第二请求信息。例如，该第二请求信息对应的小区的优先级高的优先发送，或者该第二请求信息对应的小区的优先级低的优先发送。
例如，如图7所示，小区ID1的优先级高于小区ID2的优先级。则优先传输小区ID1对应的第二请求信息，该小区ID1对应的第二请求信息中还可以包括参考信号信息b1(可以用于恢复小区ID1的链路)，之后再传输小区ID2对应的第二请求信息，该小区ID2对应的第二请求信息中还可以包括参考信号信息b2(可以用于恢复小区ID2的链路)。
可选地，该小区的优先级高低可以由发生链路失败的先后确定，如先发生链路失败的小区比后发送链路失败的小区的优先级高；或者所述小区的优先级高低可以由小区的标识的取值大小确定，如先标识小的小区比标识大的小区的优先级高；或者所述小区的优先级高低可以由小区属于主小区或辅小区确定，如先主小区比辅小区的优先级高；或者小区优先级可以由小区的带宽(所所占频域资源)大小确定，如所占带宽大的小区比所在带宽小的小区的优先级高；或者小区优先级可以由与该小区使用相同QCL信息或满足QCL关系的小区个数确定，如使用相同QCL信息多的小区比使用相同QCL信息少的小区优先级高，例如：小区1的PDCCH的QCL信息与2个小区的相同，小区2的PDCCH的QCL信息没有小区与之相同，那么小区1的优先级高于小区2的优先级。
可选地，终端可以检测该M个第二请求信息的响应信息。在未检测到该M个第二请求信息中的第s个第二请求信息对应的响应信息的情况下，发送第三请求信息，该第三请求信息用于指示该第s个小区和/或用于恢复该第s个小区的第二参考信号信息，s为正整数，且s∈{1，2，…，M}。
具体地，终端可以检测该M个第二请求信息的响应信息，在检测不到任意一个第二请求信息的响应信息的情况下，都可以再发送对应的第三请求信息来恢复该小区。
可选地，若第二请求信息在第二资源上发送，则第三请求信息可以复用该第二资源，并在该第二资源上发送第三请求信息，从而节省资源开销。
需要说明的是，该M个第二请求信息中对应于不同小区的第二请求信息占用的资源可以不同。
可选地，终端在检测到第s个第二请求信息的响应信息时，释放该第二资源。
具体地，终端在检测到某一个小区对应的第二请求信息的响应信息之后，可以释放发送该第二请求信息的第二资源。
可选地，终端在第四资源上重新发送第一请求信息，并接收重新发送的第一请求信息的响应信息，该重新发送的第一请求信息的响应信息用于指示第三资源，在该第三资源上发送该第三请求信息。
可选地，第四资源和该第一资源相同。
终端在检测到链路故障的情况下，向网络设备发送两次请求信息，例如，第一次请求信息用于告知网络设备链路失败，第二次请求信息用于指示新识别的波束的信息和/或指示链路失败的小区标识，其中第一次请求信息为周期性发送，第二请求信息为非周期性发送，这样相对于频繁的周期性的发送一次同时用于指示链路失败和新识别的波束信息的请求信息，能够节省资源开销。其中，第一次请求信息可以是波束失败恢复请求(beam failure recovery request，BFRQ)1，BFRQ1，第二次请求信息可以是BFRQ2。若第二请求之后链路依然恢复失败，则终端中断该链路的传输，使得信号传输效率较低，需要重新发送链路失败恢复请求以恢复该小区的链路。
可选地，该M个第二请求信息中的第s个第二请求信息指示的第s个小区对应的参考信号信息为q个参考信号信息，1≤s≤M，且k为整数。
需要说明的是，本申请实施例，以及下述实施例可以与前述图与图3-图5所示的实施例中描述的内容相同，为避免重复，在此不进行赘述。如发送第二请求信息和或第三请求信息的资源的配置或指示方法可以同步骤302，第一请求信息和或小区信息的最大传输次数可以同步骤302，第s个小区对应的第二请求信息指示多个参考信号时的链路失败恢复方法可以同步骤302。
可选地，该检测该第二请求信息的响应信息包括：根据该q个参考信号信息的优先级顺序，检测该第s个小区对应的第二请求信息的响应信息。
可选地，该根据该q个参考信号信息的优先级顺序，检测该第s个小区对应的第二请求信息的响应信息包括：在第p个时间窗口根据该第二请求信息指示的该q个参考信号信息的第p个优先级排序的参考信号信息，检测该第二请求信息的响应信息，1≤p≤q。
可选地，该方法还包括：在该第p个时间窗口内根据第p个优先级排序未检测到该第二请求信息的响应信息后，在第p+1个时间窗口根据该q个参考信号信息的第p+1个优先级排序的参考信号信息，检测该第二请求信息的响应信息，该第p+1个时间窗口为晚于该第p个时间窗口的时段。
可选地，在一种实施方式中，该方法还包括：在该第p个时间窗口内根据第p个优先级排序未检测到该第二请求信息的响应信息后，在根据第p+1个优先级排序的参考信号信 息检测第二请求信息的响应信息之前，还需要发送第五请求信息，该第五请求信息用于指示未在该第p个时间窗口检测到该第二请求信息的响应信息。在该实施方式中，网络设备接收到该第五请求信息后，获知终端设备未检测到该第p个参考信号对应的第二请求信息的响应信息，网络设备可以再根据第p+1个参考信号发送第二请求信息的响应信息(相应地终端设备该第p+1个参考信号对应的第二请求信息的响应信息)。否则若未再规定的时间内接收到该第五参考信号，网络设备可以认为链路恢复成功，网络设备可以不再发送第二请求信息的响应信息。可选地，该第p+1个参考信号信息对应的第p+1个时间窗口的起始位置位于发送第五请求信息后的Y个时间单元，X大于或等于0。
可选地，该第五请求信息承载在该第二资源。
可选地，该第五请求信息可以承载于第一资源。该第五请求信息可以与第一请求信息具有相同的格式。
可选地，在另一种实施方式中，该方法还包括：终端根据第p个参考信号信息检测该第二请求信息的响应信息，若检测到该第二请求信息的响应，还可以向终端设备发送确认信息，该确认信息用于指示检测到该第p个参考信号对应的第二请求信息的响应信息，或者用于指示在第p个参考信号信息对应的第p个时间窗口上检测到该第二请求信息的响应信息。网络设备在收到该确认信息后，可及时释放第二资源或即使停止响应信息的发送或获知链路失败恢复成功，有效节省资源开销。可选地，该确认信息可以承载与第二资源，即与第二请求信息占用相同的资源，即确认信息可以采用半静态资源，节省资源开销。若根据第p个参考信号信息未检测该第二请求信息的响应信息，则(在第二时间窗口)根据第p+1个参考信号信息检测该第二请求信息的响应信息(无需发送第五请求信息)。
可选地，该发送M个第二请求信息包括：在第二资源上发送该第s个第二请求信息；其中，该发送第三请求信息包括：在该第二资源上，发送该第三请求信息。
图8示出了本申请另一个实施例的链路失败恢复的方法的示意性流程图。
801，终端发送第一请求信息，该第一请求信息用于指示链路失败的M个小区和/或N个第一参考信号信息，其中，该N个第一参考信号信息用于恢复所述M个小区的链路，M≥1，N≥1，且M，N均的整数。
需要说明的是，本申请实施例中的“第一请求信息”与图3至图6所示的实施例中的“第二请求信息”的含义相同。
802，终端检测该M个小区的响应信息。
803，终端在检测到该M个小区中的第i个小区的响应信息的情况下，发送第二请求信息，该第二请求信息用于指示该第i个小区和/或用于恢复所述第i个小区的第二参考信号信息，i为正整数，且1≤i≤M。
具体地，终端在发送两次请求之后，若没有检测到某一个小区的响应信息，则终端还可以再次发起链路恢复过程，从而提高了链路恢复成功的概率，提高了信号传输的效率。
需要说明的是，本申请实施例中的“第二请求信息”与图3至图6所示的实施例中的“第三请求信息”的含义相同。
可选地，在检测到该M个小区中的部分小区的响应信息的情况下，该第二请求信息可以指示该M个小区中除上述部分小区外的其他小区和/或用于恢复对应的小区的第二参 考信号信息。
可选地，该第二请求信息还可以指示上述部分接收到响应信息的小区和/或对应的小区的确认信息。
可选地，步骤801中，终端可以在第一资源上发送该第一请求信息。该第一资源可以为免授权的PUSCH资源，或者为所述第一资源为PUCCH资源。
具体地，其中PUCCH可以是专用于发送链路失败恢复请求信息的资源或者是复用已配置的用于其他功能(如传输L1-参考信号接收功率(reference signal receiving power，RSRP)，L1-信号与干扰加噪声比(signal to interference plus noise ratio，SINR)等信息，传输CQI PMI等信息)的PUCCH资源。例如，如图9所示，第一资源为PUSCH。
需要说明的是，该第一资源可以与前述图3至图6所示的实施例中的第二资源表示的含义相同。
可选地，终端还可以接收高层信令，该高层信令用于指示所述第一资源。
可选地，所述用于指示所述链路失败的M个小区中的至少一个小区和/或N个参考信号信息中的至少一个参考信号信息的请求信息的传输次数小于或等于预设次数阈值或网络设备配置的次数阈值。
具体地，步骤801中的第一请求信息可以重复发送，例如，第二请求信息为重复发送的第一请求信息，都是用于请求恢复链路，只是每次请求恢复的小区可能不同(如第二请求恢复的小区是第一请求恢复的小区的子集)和/或用于恢复某个小区链路的参考信号可能不同。也就是说，重复发送第一请求信息的次数需要小于或等于预设值X。该预设值可以是终端预设的次数阈值或网络设备配置的次数阈值。
可选地，在发送该第一请求信息之前，该方法还包括：确定该L个小区中至少存在一个小区链路失败；或确定该L个小区中至少存在一个小区链路失败，以及用于恢复该至少一个小区的链路的参考信号。
需要说明的是，本申请实施例可以与前述图与图5所示的实施例中描述的内容相同，为避免重复，在此不进行赘述。如第k个小区对应的第二请求信息指示多个参考信号时的链路失败恢复方法可以同步骤302。
可选地，该第二请求信息中用于指示链路失败的M个小区中的第k个小区对应的参考信号信息为q个参考信号信息，1≤k≤M，1＜q＜N，且k、q均为整数。
可选地，该检测该M个小区的响应信息包括：根据该q个参考信号信息的优先级顺序，检测该第k个小区对应的响应信息。
可选地，该根据该q个参考信号信息的优先级顺序，检测该第k个小区响应信息包括：在第p个时间窗口根据该q个参考信号信息中的第p个优先级排序的参考信号信息，检测该第k个小区对应的响应信息，1≤p≤q。
可选地，该方法还包括：在该第p个时间窗口内根据第p个优先级排序未检测到该第二请求信息的响应信息后，在第p+1个时间窗口根据该q个参考信号信息的第p+1个优先级排序的参考信号信息，检测该第二请求信息的响应信息，该第p+1个时间窗口为晚于该第p个时间窗口的时段。
可选地，在一种实施方式中，该方法还包括：在该第p个时间窗口内根据第p个优先级排序未检测到该第二请求信息的响应信息后，在根据第p+1个优先级排序的参考信号信 息检测第二请求信息的响应信息之前，还需要发送第五请求信息，该第五请求信息用于指示未在该第p个时间窗口检测到该第二请求信息的响应信息。在该实施方式中，网络设备接收到该第五请求信息后，获知终端设备未检测到该第p个参考信号对应的第二请求信息的响应信息，网络设备可以再根据第p+1个参考信号发送第二请求信息的响应信息(相应地终端设备该第p+1个参考信号对应的第二请求信息的响应信息)。否则若未再规定的时间内接收到该第五参考信号，网络设备可以认为链路恢复成功，网络设备可以不再发送第二请求信息的响应信息。可选地，该第p+1个参考信号信息对应的第p+1个时间窗口的起始位置位于发送第五请求信息后的Y个时间单元，Y大于或等于0。
可选地，该第五请求信息承载在该第二资源。
可选地，该第五请求信息可以承载于第一资源。该第五请求信息可以与第一请求信息具有相同的格式。
可选地，在另一种实施方式中，该方法还包括：终端根据第p个参考信号信息检测该第二请求信息的响应信息，若检测到该第二请求信息的响应，还可以向终端设备发送确认信息，该确认信息用于指示检测到该第p个参考信号对应的第二请求信息的响应信息，或者用于指示在第p个参考信号信息对应的第p个时间窗口上检测到该第二请求信息的响应信息。网络设备在收到该确认信息后，可及时释放第二资源或即使停止响应信息的发送或获知链路失败恢复成功，有效节省资源开销。可选地，该确认信息可以承载与第二资源，即与第二请求信息占用相同的资源，即确认信息可以采用半静态资源，节省资源开销。若根据第p个参考信号信息未检测该第二请求信息的响应信息，则(在第二时间窗口)根据第p+1个参考信号信息检测该第二请求信息的响应信息(无需发送第五请求信息)。
需要说明的是，本申请(包括图3至图7所示的实施例)中，根据参考信号发送或检测第一/第二/第三请求信息的响应信息可以理解为该参考信号与该响应信息满足QCL关系，还可以理解为根据该参考信号对应的波束发送或接收该响应信息。参考信号对应的第二请求信息的响应信息也可以理解为该参考信号与该响应信息满足QCL关系，还可以理解为根据该参考信号对应的波束发送或接收该响应信息。例如根据第p个参考信号信息检测该第二请求信息的响应信息，可以理解为该第p个参考信号与该响应信息满足QCL关系，或者理解为终端设备使用接收第p个参考信号时的接收波束或空间相关参数接收该第二请求信息的响应信息。
需要说明的是，本申请(包括图3至图7所示的实施例)中，“小区标识”还可以替换为“小区索引”。参考信号信息可以包括参考信号索引/SSB的索引和或参考信号的质量/SSB的质量。
需要说明的是，本申请(包括图3至图7所示的实施例)中，第一参考信号或第二参考信号可以是用于恢复链路的候选参考信号资源集合中的参考信号，还可以是用于波束训练的参考信号资源集合中的参考信号，还可以是其他参考信号资源集合中的参考信号，还可以SSB资源集合中的SSB。该参考信号可以是CSI-RS，还可以是SSB，还可以是TRS。可选地，该参考信号的信道质量大于预设门限。
需要说明的是，本申请(包括图3至图7所示的实施例)中，链路失败的小区与承载第一/第二/第三请求信息的资源所在的小区可以相同或不同。例如：链路失败的M个小区是SCell，承载第一/第二/第三请求信息的资源所在的小区可以是PCell或者是有上行资源 的SCell。承载第一请求信息资源所在的小区与承载第二请求信息资源所在的小区可以相同或不同。承载第二请求信息的资源所在的小区与承载第三请求信息资源所在的小区可以相同或不同。承载第一/第二/第三请求信息的资源所在的小区与承载响应信息的资源所在的小区可以相同或不同。
应理解，本申请中，M个小区的响应信息可以理解为每个小区对应一个响应信息，共有M个响应信息。还可以理解为M个小区的响应信息总共对应一个响应信息或多个响应信息。
图10示出了本申请实施例的链路失败恢复的装置1000的示意性框图。
应理解，该装置1000可以对应于图4所示的实施例中的终端，可以具有方法中的终端的任意功能。该装置1000，包括收发模块1010。
收发模块1010，用于在第一资源上发送第一请求信息，所述第一请求信息用于指示L个小区中的至少一个小区的链路失败，所述L为大于1的整数；
所述收发模块1010，用于在第二资源上发送第二请求信息，所述第二请求信息用于指示L个小区中的链路失败的M个小区的小区信息，M≥1，且M为整数。
可选地，该M个小区的小区信息包括该M个小区的小区标识和/或用于恢复该M个小区的N个第一参考信号信息，N≥1，且N为整数。
可选地，该装置1000还包括：
处理模块1020，用于检测该M个小区的响应信息；
该收发模块1010，还用于发送第三请求信息，其中，在未检测到该M个小区中的第i个小区的响应信息的情况下，该第三请求信息指示该第i个小区的小区标识和/或用于恢复该第i个小区的第二参考信号信息，i为正整数，且1≤i≤M，和在检测到该M个小区中的第j个小区的响应信息的情况下，该第三请求信息还指示该第j个小区的确认信息，其中，j为正整数，且1≤j≤M，i不等于j；或
该收发模块1010，还用于发送该第三请求信息，其中，在未检测到该M个小区中的第i个小区的响应信息的情况下，该第三请求信息指示该第i个小区的小区标识和/或用于恢复该第i个小区的第二参考信号信息，i为正整数，且1≤i≤M，或在检测到该M个小区中的第j个小区的响应信息的情况下，该第三请求信息用于指示该第j个小区的确认信息，其中，j为正整数，且1≤j≤M，i＝j。
可选地，该M个小区中的第k个小区的小区信息包括q个第一参考信号信息，k为正整数，1＜q≤N。
可选地，该处理模块1020具体用于：根据该q个参考信号信息的优先级顺序，检测该第k个小区对应的响应信息。
可选地，该处理模块1020具体用于：在第p个时间窗口根据该q个参考信号信息中的第p个优先级排序的参考信号信息，检测该第k个小区对应的响应信息，1≤p≤q。
可选地，该处理模块1020，还用于在该第p个时间窗口内根据第p个优先级排序未检测到该第二请求信息的响应信息后，在第p+1个时间窗口根据该q个参考信号信息的第p+1个优先级排序的参考信号信息，检测该第二请求信息的响应信息，该第p+1个时间窗口为晚于该第p个时间窗口的时段。
可选地，该收发模块1010具体用于：在该第二资源上，发送该第三请求信息。
可选地，该处理模块1020，还用于在检测到该M个小区的响应信息时，释放该第二资源。
可选地，在未检测到该M个小区中的至少一个小区的响应信息的情况下，该收发模块，还用于在第四资源上重新发送第一请求信息；该收发模块，还用于接收该重新发送的第一请求信息的响应信息，该重新发送的第一请求信息的响应信息用于指示第三资源；其中，该收发模块1010具体用于：在该第三资源上，发送该第三请求信息。
可选地，该第四资源和该第一资源相同。
可选地，W≤X·L，W为该第一请求信息的传输次数的最大值，X为用于指示该M个小区中的任一个小区的小区信息的请求信息的传输次数的最大值。
可选地，该收发模块1010，还用于接收该第一请求信息的响应信息，该第一请求信息的响应信息用于指示或激活该第二资源。
可选地，该第二资源为高层信令配置的，或该第二资源为与该第一资源或该第一请求信息关联的资源。
可选地，在该第一资源上发送该第一请求信息之前，该处理模块1020，还用于确定该L个小区中至少存在一个小区链路失败；或
该处理模块1020，还用于确定该L个小区中至少存在一个小区链路失败，以及用于恢复该至少一个小区的链路的参考信号信息。
图11示出了本申请实施例提供的链路失败恢复的装置1100，该装置1100可以为图4中所述的终端。该装置可以采用如图11所示的硬件架构。该装置可以包括处理器1110和收发器1120，可选地，该装置还可以包括存储器1130，该处理器1110、收发器1120和存储器1130通过内部连接通路互相通信。图11中的处理模块1120所实现的相关功能可以由处理器1110来实现，收发模块1110所实现的相关功能可以由处理器1110控制收发器1120来实现。
可选地，处理器1110可以是一个通用中央处理器(central processing unit，CPU)，微处理器，特定应用集成电路(application-specific integrated circuit，ASIC)，专用处理器，或一个或多个用于执行本申请实施例技术方案的集成电路。或者，处理器可以指一个或多个设备、电路、和/或用于处理数据(例如计算机程序指令)的处理核。例如可以是基带处理器、或中央处理器。基带处理器可以用于对通信协议以及通信数据进行处理，中央处理器可以用于对链路失败恢复的装置(如，基站、终端、或芯片等)进行控制，执行软件程序，处理软件程序的数据。
可选地，该处理器1110可以包括是一个或多个处理器，例如包括一个或多个中央处理单元(central processing unit，CPU)，在处理器是一个CPU的情况下，该CPU可以是单核CPU，也可以是多核CPU。
该收发器1120用于发送和接收数据和/或信号，以及接收数据和/或信号。该收发器可以包括发射器和接收器，发射器用于发送数据和/或信号，接收器用于接收数据和/或信号。
该存储器1130包括但不限于是随机存取存储器(random access memory，RAM)、只读存储器(read-only memory，ROM)、可擦除可编程存储器(erasable programmable read only memory，EPROM)、只读光盘(compact disc read-only memory，CD-ROM)，该存储器1130用于存储相关指令及数据。
存储器1130用于存储终端的程序代码和数据，可以为单独的器件或集成在处理器1110中。
具体地，所述处理器1110用于控制收发器与终端进行信息传输。具体可参见方法实施例中的描述，在此不再赘述。
在具体实现中，作为一种实施例，装置1100还可以包括输出设备和输入设备。输出设备和处理器1110通信，可以以多种方式来显示信息。例如，输出设备可以是液晶显示器(liquid crystal display，LCD)，发光二级管(light emitting diode，LED)显示设备，阴极射线管(cathode ray tube，CRT)显示设备，或投影仪(projector)等。输入设备和处理器601通信，可以以多种方式接收用户的输入。例如，输入设备可以是鼠标、键盘、触摸屏设备或传感设备等。
可以理解的是，图11仅仅示出了链路失败恢复的装置的简化设计。在实际应用中，该装置还可以分别包含必要的其他元件，包含但不限于任意数量的收发器、处理器、控制器、存储器等，而所有可以实现本申请的终端都在本申请的保护范围之内。
在一种可能的设计中，该装置1100可以是芯片，例如可以为可用于终端中的通信芯片，用于实现终端中处理器1110的相关功能。该芯片可以为实现相关功能的现场可编程门阵列，专用集成芯片，系统芯片，中央处理器，网络处理器，数字信号处理电路，微控制器，还可以采用可编程控制器或其他集成芯片。该芯片中，可选的可以包括一个或多个存储器，用于存储程序代码，当所述代码被执行时，使得处理器实现相应的功能。
本申请实施例还提供一种装置，该装置可以是终端也可以是电路。该装置可以用于执行上述方法实施例中由终端所执行的动作。
图12示出了本申请实施例的链路失败恢复的装置1200的示意性框图。
应理解，该装置1200可以对应于图4所示的实施例中的网络设备，可以具有方法中的网络设备的任意功能。该装置1200，包括收发模块1210。
收发模块1210，用于在第一资源接收第一请求信息，该第一请求信息用于指示L个小区中的至少一个小区的链路失败，该L为大于1的整数；
所述收发模块1210，用于在第二资源接收该第二请求信息，该第二请求信息用于指示L个小区中的链路失败的M个小区的小区信息，M≥1，且M为整数。
可选地，该M个小区的小区信息包括该M个小区的小区标识和/或用于恢复该M个小区的N个第一参考信号信息，N≥1，且N为整数。
可选地，该收发模块1210还用于：
发送该第j个小区的响应信息，接收第三请求信息，该第三请求信息用于指示该第i个小区的小区标识和/或用于恢复该第i个小区的第二参考信号信息，以及该第j个小区的确认信息，1≤i≤M，1≤j≤M，i不等于j，i和j均为正整数；或
接收第三请求信息，该第三请求信息用于指示该第i个小区的小区标识和/或用于恢复该第i个小区的第二参考信号信息，i为正整数，且1≤i≤M；或
发送该第j个小区的响应信息，接收第三请求信息，该第三请求信息用于指示该第三请求信息用于指示该第j个小区的确认信息，j为正整数，且1≤j≤M。
可选地，该收发模块1210具体用于：在该第二资源上，接收该第三请求信息。
可选地，该收发模块1210还用于：
在第四资源上接收第一请求信息；
发送该第一请求信息的响应信息，该第一请求信息的响应信息用于指示第三资源；
该收发模块1210具体用于：
在该第三资源上，接收该第三请求信息。
可选地，该第四资源和该第一资源相同。
可选地，在该第二资源接收该第二请求信息之前，该收发模块，还用于发送该第一请求信息的响应信息，该响应信息用于指示或激活该第二资源。
可选地，在该第二资源接收该第二请求信息之前，该收发模块，还用于发送高层信令，该高层信令用于配置该第二资源。
可选地，该第二资源为与该第一资源或该第一请求信息关联的资源。
可选地，该收发模块1210，还用于发送配置信息，该配置信息用于配置该第一资源。
图13示出了本申请实施例提供的链路失败恢复的装置1300，该装置1300可以为图4中所述的终端。该装置可以采用如图13所示的硬件架构。该装置可以包括处理器1310和收发器1320，可选地，该装置还可以包括存储器1330，该处理器1310、收发器1320和存储器1330通过内部连接通路互相通信。图13中的处理模块1320所实现的相关功能可以由处理器1310来实现，收发模块1310所实现的相关功能可以由处理器1310控制收发器1320来实现。
可选地，处理器1310可以是一个通用中央处理器(central processing unit，CPU)，微处理器，特定应用集成电路(application-specific integrated circuit，ASIC)，专用处理器，或一个或多个用于执行本申请实施例技术方案的集成电路。或者，处理器可以指一个或多个设备、电路、和/或用于处理数据(例如计算机程序指令)的处理核。例如可以是基带处理器、或中央处理器。基带处理器可以用于对通信协议以及通信数据进行处理，中央处理器可以用于对链路失败恢复的装置(如，基站、终端、或芯片等)进行控制，执行软件程序，处理软件程序的数据。
可选地，该处理器1310可以包括是一个或多个处理器，例如包括一个或多个中央处理单元(central processing unit，CPU)，在处理器是一个CPU的情况下，该CPU可以是单核CPU，也可以是多核CPU。
该收发器1320用于发送和接收数据和/或信号，以及接收数据和/或信号。该收发器可以包括发射器和接收器，发射器用于发送数据和/或信号，接收器用于接收数据和/或信号。
该存储器1330包括但不限于是随机存取存储器(random access memory，RAM)、只读存储器(read-only memory，ROM)、可擦除可编程存储器(erasable programmable read only memory，EPROM)、只读光盘(compact disc read-only memory，CD-ROM)，该存储器1330用于存储相关指令及数据。
存储器1330用于存储终端的程序代码和数据，可以为单独的器件或集成在处理器1310中。
具体地，所述处理器1310用于控制收发器与终端进行信息传输。具体可参见方法实施例中的描述，在此不再赘述。
在具体实现中，作为一种实施例，装置1300还可以包括输出设备和输入设备。输出设备和处理器1310通信，可以以多种方式来显示信息。例如，输出设备可以是液晶显示 器(liquid crystal display，LCD)，发光二级管(light emitting diode，LED)显示设备，阴极射线管(cathode ray tube，CRT)显示设备，或投影仪(projector)等。输入设备和处理器601通信，可以以多种方式接收用户的输入。例如，输入设备可以是鼠标、键盘、触摸屏设备或传感设备等。
可以理解的是，图13仅仅示出了链路失败恢复的装置的简化设计。在实际应用中，该装置还可以分别包含必要的其他元件，包含但不限于任意数量的收发器、处理器、控制器、存储器等，而所有可以实现本申请的终端都在本申请的保护范围之内。
在一种可能的设计中，该装置1300可以是芯片，例如可以为可用于终端中的通信芯片，用于实现终端中处理器1310的相关功能。该芯片可以为实现相关功能的现场可编程门阵列，专用集成芯片，系统芯片，中央处理器，网络处理器，数字信号处理电路，微控制器，还可以采用可编程控制器或其他集成芯片。该芯片中，可选的可以包括一个或多个存储器，用于存储程序代码，当所述代码被执行时，使得处理器实现相应的功能。
本申请实施例还提供一种装置，该装置可以是终端也可以是电路。该装置可以用于执行上述方法实施例中由终端所执行的动作。
可选地，本实施例中的装置为终端时，图14示出了一种简化的终端的结构示意图。便于理解和图示方便，图14中，终端以手机作为例子。如图14所示，终端包括处理器、存储器、射频电路、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，以及对终端进行控制，执行软件程序，处理软件程序的数据等。存储器主要用于存储软件程序和数据。射频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。天线主要用于收发电磁波形式的射频信号。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。需要说明的是，有些种类的终端可以不具有输入输出装置。
当需要发送数据时，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。为便于说明，图14中仅示出了一个存储器和处理器。在实际的终端产品中，可以存在一个或多个处理器和一个或多个存储器。存储器也可以称为存储介质或者存储设备等。存储器可以是独立于处理器设置，也可以是与处理器集成在一起，本申请实施例对此不做限制。
在本申请实施例中，可以将具有收发功能的天线和射频电路视为终端的收发单元，将具有处理功能的处理器视为终端的处理单元。如图14所示，终端包括收发单元1410和处理单元1420。收发单元也可以称为收发器、收发机、收发装置等。处理单元也可以称为处理器，处理单板，处理模块、处理装置等。可选的，可以将收发单元1410中用于实现接收功能的器件视为接收单元，将收发单元1410中用于实现发送功能的器件视为发送单元，即收发单元1410包括接收单元和发送单元。收发单元有时也可以称为收发机、收发器、或收发电路等。接收单元有时也可以称为接收机、接收器、或接收电路等。发送单元有时也可以称为发射机、发射器或者发射电路等。
应理解，收发单元1410用于执行上述方法实施例中终端侧的发送操作和接收操作，处理单元1420用于执行上述方法实施例中终端上除了收发操作之外的其他操作。
例如，在一种实现方式中，处理单元1420用于执行图3中终端侧的处理步骤。收发单元1410，用于执行图3中的步骤301和/或步骤302中的收发操作，和/或收发单元1410还用于执行本申请实施例中终端侧的其他收发步骤。
当该通信装置为芯片时，该芯片包括收发单元和处理单元。其中，收发单元可以是输入输出电路、通信接口；处理单元为该芯片上集成的处理器或者微处理器或者集成电路。
可选地，该装置为终端时，还可以参照图15所示的设备。作为一个例子，该设备可以完成类似于图14中处理器1410的功能。在图15中，该设备包括处理器1501，发送数据处理器1503，接收数据处理器1505。上述实施例中的处理模块1020可以是图15中的该处理器1501，并完成相应的功能。上述实施例中的收发模块1010可以是图15中的发送数据处理器1503和接收数据处理器1505。虽然图15中示出了信道编码器、信道解码器，但是可以理解这些模块并不对本实施例构成限制性说明，仅是示意性的。
图16示出本实施例的另一种形式。处理装置1600中包括调制子系统、中央处理子系统、周边子系统等模块。本实施例中的通信设备可以作为其中的调制子系统。具体的，该调制子系统可以包括处理器1603，接口1604。其中处理器1603完成上述处理模块610的功能，接口1604完成上述收发模块620的功能。作为另一种变形，该调制子系统包括存储器1606、处理器1603及存储在存储器上并可在处理器上运行的程序，所述处理器执行所述程序时实现实施例一至五之一所述方法。需要注意的是，所述存储器1606可以是非易失性的，也可以是易失性的，其位置可以位于调制子系统内部，也可以位于处理装置1600中，只要该存储器1606可以连接到所述处理器1603即可。
本实施例中的装置为网络设备时，该网络设备可以如图17所示，装置1700包括一个或多个射频单元，如远端射频单元(remote radio unit，RRU)1710和一个或多个基带单元(baseband unit，BBU)(也可称为数字单元，digital unit，DU)1720。所述RRU 1710可以称为收发模块，与图8中的收发模块810对应，可选地，该收发模块还可以称为收发机、收发电路、或者收发器等等，其可以包括至少一个天线1715和射频单元1716。所述RRU 1710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指示信息。所述BBU 1710部分主要用于进行基带处理，对基站进行控制等。所述RRU 1710与BBU 1720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BBU 1720为基站的控制中心，也可以称为处理模块，可以与图12中的处理模块1220对应，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(处理模块)可以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，例如，生成上述指示信息等。
在一个示例中，所述BBU 1720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(如LTE网，5G网或其他网)。所述BBU 1720还包括存储器1721和处理器1722。所述存储器1721用以存储必要的指令和数据。所述处理器1722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1721和处理器1722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。
作为本实施例的另一种形式，提供一种计算机可读存储介质，其上存储有指令，该指令被执行时执行上述方法实施例中的方法。
作为本实施例的另一种形式，提供一种包含指令的计算机程序产品，该指令被执行时执行上述方法实施例中的方法。
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指令时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、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(digital subscriber line，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，高密度数字视频光盘(digital video disc，DVD))、或者半导体介质(例如，固态硬盘(solid state disk，SSD))等。
应理解，处理器可以是集成电路芯片，具有信号的处理能力。在实现过程中，上述方法实施例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。上述的处理器可以是通用处理器、数字信号处理器(digital signal processor，DSP)、专用集成电路(application specific integrated circuit，ASIC)、现成可编程门阵列(field programmable gate array，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。可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。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。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译码处理器执行完成，或者用译码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。
可以理解，本申请实施例中的存储器可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(read-only memory，ROM)、可编程只读存储器(programmable ROM，PROM)、可擦除可编程只读存储器(erasable PROM，EPROM)、电可擦除可编程只读存储器(electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(random access memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(static RAM，SRAM)、动态随机存取存储器(dynamic RAM，DRAM)、同步动态随机存取存储器(synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(synchronous link DRAM， SLDRAM)和直接内存总线随机存取存储器(direct rambus RAM，DR RAM)。
本申请中，“至少一个”是指一个或者多个，“多个”是指两个或两个以上。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B的情况，其中A，B可以是单数或者复数。字符“/”一般表示前后关联对象是一种“或”的关系。“以下至少一项(个)”或其类似表达，是指的这些项中的任意组合，包括单项(个)或复数项(个)的任意组合。例如，a，b，或c中的至少一项(个)，可以表示：a，b，c，a-b，a-c，b-c，或a-b-c，其中a，b，c可以是单个，也可以是多个。
应理解，说明书通篇中提到的“一个实施例”或“一实施例”意味着与实施例有关的特定特征、结构或特性包括在本发明的至少一个实施例中。因此，在整个说明书各处出现的“在一个实施例中”或“在一实施例中”未必一定指相同的实施例。此外，这些特定的特征、结构或特性可以任意适合的方式结合在一个或多个实施例中。应理解，在本发明的各种实施例中，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。
在本说明书中使用的术语“部件”、“模块”、“系统”等用于表示计算机相关的实体、硬件、固件、硬件和软件的组合、软件、或执行中的软件。例如，部件可以是但不限于，在处理器上运行的进程、处理器、对象、可执行文件、执行线程、程序和/或计算机。通过图示，在计算设备上运行的应用和计算设备都可以是部件。一个或多个部件可驻留在进程和/或执行线程中，部件可位于一个计算机上和/或分布在2个或更多个计算机之间。此外，这些部件可从在上面存储有各种数据结构的各种计算机可读介质执行。部件可例如根据具有一个或多个数据分组(例如来自与本地系统、分布式系统和/或网络间的另一部件交互的二个部件的数据，例如通过信号与其它系统交互的互联网)的信号通过本地和/或远程进程来通信。
还应理解，本文中涉及的第一、第二以及各种数字编号仅为描述方便进行的区分，并不用来限制本申请实施例的范围。
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。其中，单独存在A或B，并不限定A或B的数量。以单独存在A为例，可以理解为具有一个或多个A。
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示例的单元及算法步骤，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申请的范围。
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，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(read-only memory，ROM)、随机存取存储器(random access memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (32)

  1. 一种链路失败恢复的方法，其特征在于，包括：
    在第一资源上发送第一请求信息，所述第一请求信息用于指示L个小区中的至少一个小区的链路失败，所述L为大于1的整数；
    在第二资源上发送第二请求信息，所述第二请求信息用于指示L个小区中的链路失败的M个小区的小区信息，M≥1，且M为整数。
  2. 根据权利要求1所述的方法，其特征在于，所述M个小区的小区信息包括所述M个小区的小区标识和/或用于恢复所述M个小区的N个第一参考信号信息，N≥1，且N为整数。
  3. 根据权利要求2所述的方法，其特征在于，所述方法还包括：
    检测所述M个小区的响应信息；
    发送第三请求信息，其中，在未检测到所述M个小区中的第i个小区的响应信息的情况下，所述第三请求信息指示所述第i个小区的小区标识和/或用于恢复所述第i个小区的第二参考信号信息，i为正整数，且1≤i≤M，和在检测到所述M个小区中的第j个小区的响应信息的情况下，所述第三请求信息还指示所述第j个小区的确认信息，其中，j为正整数，且1≤j≤M，i不等于j；或
    发送所述第三请求信息，其中，在未检测到所述M个小区中的第i个小区的响应信息的情况下，所述第三请求信息指示所述第i个小区的小区标识和/或用于恢复所述第i个小区的第二参考信号信息，i为正整数，且1≤i≤M，或在检测到所述M个小区中的第j个小区的响应信息的情况下，所述第三请求信息用于指示所述第j个小区的确认信息，其中，j为正整数，且1≤j≤M，i＝j。
  4. 根据权利要求3所述的方法，其特征在于，所述M个小区中的第k个小区的小区信息包括q个第一参考信号信息，k为正整数，1＜q≤N。
  5. 根据权利要求4所述的方法，其特征在于，所述检测所述M个小区的的响应信息包括：
    根据所述q个参考信号信息的优先级顺序，检测所述第k个小区对应的响应信息。
  6. 根据权利要求5所述的方法，其特征在于，所述根据所述参考信号信息的优先级顺序，检测所述第k个小区对应的响应信息包括：
    在第p个时间窗口根据所述q个参考信号信息中的第p个优先级排序的参考信号信息，检测所述第k个小区对应的响应信息，1≤p≤q。
  7. 根据权利要求6所述的方法，其特征在于，所述方法还包括：
    在所述第p个时间窗口内根据第p个优先级排序未检测到所述第二请求信息的响应信息后，在第p+1个时间窗口根据所述q个参考信号信息的第p+1个优先级排序的参考信号信息，检测所述第二请求信息的响应信息，所述第p+1个时间窗口为晚于所述第p个时间窗口的时段。
  8. 根据权利要求3至7中任一项所述的方法，其特征在于，所述发送第三请求信息包括：
    在所述第二资源上，发送所述第三请求信息。
  9. 根据权利要求1至8中任一项所述的方法，其特征在于，所述方法还包括：
    在检测到所述M个小区的响应信息时，释放所述第二资源。
  10. 根据权利要求2至7中任一项所述的方法，其特征在于，在未检测到所述M个小区中的至少一个小区的响应信息的情况下，所述方法还包括：
    在第四资源上重新发送第一请求信息；
    接收所述重新发送的第一请求信息的响应信息，所述重新发送的第一请求信息的响应信息用于指示第三资源；
    其中，所述发送第三请求信息包括：
    在所述第三资源上，发送所述第三请求信息。
  11. 根据权利要求10所述的方法，其特征在于，所述第四资源和所述第一资源相同。
  12. 根据权利要求1至11任一项所述的方法，其特征在于，W≤X·L，W为所述第一请求信息的传输次数的最大值，X为用于指示所述M个小区中的任一个小区的小区信息的请求信息的传输次数的最大值。
  13. 根据权利要求1至12中任一项所述的方法，其特征在于，所述方法还包括：
    接收所述第一请求信息的响应信息，所述第一请求信息的响应信息用于指示或激活所述第二资源。
  14. 根据权利要求1至12中任一项所述的方法，其特征在于，所述第二资源为高层信令配置的，或所述第二资源为与所述第一资源或所述第一请求信息关联的资源。
  15. 根据权利要求1至14中任一项所述的方法，其特征在于，在所述第一资源上发送所述第一请求信息之前，所述方法还包括：
    确定所述L个小区中至少存在一个小区链路失败；或
    确定所述L个小区中至少存在一个小区链路失败，以及用于恢复所述至少一个小区的链路的参考信号信息。
  16. 一种链路失败恢复的装置，其特征在于，包括：
    收发模块，用于在第一资源上发送第一请求信息，所述第一请求信息用于指示L个小区中的至少一个小区的链路失败，所述L为大于1的整数；
    所述收发模块，用于在第二资源上发送第二请求信息，所述第二请求信息用于指示L个小区中的链路失败的M个小区的小区信息，M≥1，且M为整数。
  17. 根据权利要求16所述的装置，其特征在于，所述M个小区的小区信息包括所述M个小区的小区标识和/或用于恢复所述M个小区的N个第一参考信号信息，N≥1，且N为整数。
  18. 根据权利要求17所述的装置，其特征在于，所述装置还包括：
    处理模块，用于检测所述M个小区的响应信息；
    所述收发模块，还用于发送第三请求信息，其中，在未检测到所述M个小区中的第i个小区的响应信息的情况下，所述第三请求信息指示所述第i个小区的小区标识和/或用于恢复所述第i个小区的第二参考信号信息，i为正整数，且1≤i≤M，和在检测到所述M个小区中的第j个小区的响应信息的情况下，所述第三请求信息还指示所述第j个小区的确认信息，其中，j为正整数，且1≤j≤M，i不等于j；或
    所述收发模块，还用于发送所述第三请求信息，其中，在未检测到所述M个小区中的第i个小区的响应信息的情况下，所述第三请求信息指示所述第i个小区的小区标识和/或用于恢复所述第i个小区的第二参考信号信息，i为正整数，且1≤i≤M，或在检测到所述M个小区中的第j个小区的响应信息的情况下，所述第三请求信息用于指示所述第j个小区的确认信息，其中，j为正整数，且1≤j≤M，i＝j。
  19. 根据权利要求18所述的装置，其特征在于，所述M个小区中的第k个小区的小区信息包括q个第一参考信号信息，k为正整数，1＜q≤N。
  20. 根据权利要求19所述的装置，其特征在于，所述处理模块具体用于：
    根据所述q个参考信号信息的优先级顺序，检测所述第k个小区对应的响应信息。
  21. 根据权利要求20所述的装置，其特征在于，所述处理模块具体用于：
    在第p个时间窗口根据所述q个参考信号信息中的第p个优先级排序的参考信号信息，检测所述第k个小区对应的响应信息，1≤p≤q。
  22. 根据权利要求21所述的装置，其特征在于，所述处理模块，还用于在所述第p个时间窗口内根据第p个优先级排序未检测到所述第二请求信息的响应信息后，在第p+1个时间窗口根据所述q个参考信号信息的第p+1个优先级排序的参考信号信息，检测所述第二请求信息的响应信息，所述第p+1个时间窗口为晚于所述第p个时间窗口的时段。
  23. 根据权利要求18至22中任一项所述的装置，其特征在于，所述收发模块具体用于：
    在所述第二资源上，发送所述第三请求信息。
  24. 根据权利要求16至23中任一项所述的装置，其特征在于，所述处理模块，还用于在检测到所述M个小区的响应信息时，释放所述第二资源。
  25. 根据权利要求17至22中任一项所述的装置，其特征在于，在未检测到所述M个小区中的至少一个小区的响应信息的情况下，所述收发模块，还用于在第四资源上重新发送第一请求信息；
    所述收发模块，还用于接收所述重新发送的第一请求信息的响应信息，所述重新发送的第一请求信息的响应信息用于指示第三资源；
    其中，所述收发模块具体用于：
    在所述第三资源上，发送所述第三请求信息。
  26. 根据权利要求25所述的装置，其特征在于，所述第四资源和所述第一资源相同。
  27. 根据权利要求16至26任一项所述的装置，其特征在于，W≤X·L，W为所述第一请求信息的传输次数的最大值，X为用于指示所述M个小区中的任一个小区的小区信息的请求信息的传输次数的最大值。
  28. 根据权利要求16至27中任一项所述的装置，其特征在于，所述收发模块，还用于接收所述第一请求信息的响应信息，所述第一请求信息的响应信息用于指示或激活所述第二资源。
  29. 根据权利要求16至27中任一项所述的装置，其特征在于，所述第二资源为高层信令配置的，或所述第二资源为与所述第一资源或所述第一请求信息关联的资源。
  30. 根据权利要求16至29中任一项所述的装置，其特征在于，在所述第一资源上发送所述第一请求信息之前，所述处理模块，还用于确定所述L个小区中至少存在一个小区 链路失败；或
    所述处理模块，还用于确定所述L个小区中至少存在一个小区链路失败，以及用于恢复所述至少一个小区的链路的参考信号信息。
  31. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质包括计算机程序或指令，当所述计算机程序或指令在计算机上运行时，使得计算机执行如权利要求1-15中任一项所述的方法。
  32. 一种计算机程序产品，其特征在于，所述计算机程序产品包括计算机程序或指令，当所述计算机程序或指令在计算机上运行时，使得计算机执行如权利要求1-15中任一项所述的方法。
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