WO2021147822A1 - 无线链路恢复方法及设备 - Google Patents

无线链路恢复方法及设备 Download PDF

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Publication number
WO2021147822A1
WO2021147822A1 PCT/CN2021/072527 CN2021072527W WO2021147822A1 WO 2021147822 A1 WO2021147822 A1 WO 2021147822A1 CN 2021072527 W CN2021072527 W CN 2021072527W WO 2021147822 A1 WO2021147822 A1 WO 2021147822A1
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WIPO (PCT)
Prior art keywords
cell
target
radio link
network device
request
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PCT/CN2021/072527
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English (en)
French (fr)
Inventor
王振
刘思綦
孙鹏
杨晓东
纪子超
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维沃移动通信有限公司
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Publication of WO2021147822A1 publication Critical patent/WO2021147822A1/zh

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    • 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
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/19—Connection re-establishment

Definitions

  • the embodiments of the present invention relate to the field of communication technologies, and in particular, to a method and device for restoring a wireless link.
  • the UE When a beam failure (BF) or radio link failure (Radio link Failure, RLF) occurs in the primary cell or the secondary cell, the UE triggers a radio link re-establishment procedure.
  • BF beam failure
  • RLF Radio link Failure
  • the beam failure recovery (BFR) process of the primary cell is introduced.
  • the beam failure recovery of the primary cell is realized, and the beam failure recovery process of the secondary cell is introduced to realize the beam failure recovery on the secondary cell.
  • the UE needs to initiate a recovery request first, and the network device responds to the beam failure recovery through the PDCCH.
  • the base station For the beam failure of the secondary cell, the base station needs to use the PDCCH to schedule uplink resources for the user to send BFR MAC CE. However, the base station cannot determine which secondary cells have BF before the base station receives the BFR MAC CE. In the case of the secondary cell scheduling the primary cell, once the secondary cell BF occurs, the base station cannot determine whether it is the secondary cell of the scheduling primary cell that the BF has occurred, and cannot guarantee that the BFR MAC CE is scheduled in the appropriate cell.
  • the corresponding PDCCH cannot be sent normally, so that neither the primary cell nor the secondary cell can perform beam failure recovery according to the beam failure recovery procedure in the case of the primary cell scheduling the secondary cell or the primary cell self-scheduling or the secondary cell self-scheduling.
  • Embodiments of the present invention provide a wireless link recovery method and device to solve the problem that if BF or RLF occurs in the primary cell, or BF or RLF occurs in the secondary cell when the primary cell is scheduled by the secondary cell, the wireless link recovery cannot be quickly achieved The problem.
  • the present invention is implemented as follows:
  • an embodiment of the present invention provides a radio link recovery method.
  • the method includes: if a target event occurs in the first cell of the UE, the UE is on the second cell of the UE and sends the first cell to the network device.
  • the radio link recovery request ; where the first cell includes at least one of the following: a primary cell, a first secondary cell; the second cell includes at least one of the following: the primary cell, the first secondary cell, and the second secondary cell;
  • a secondary cell is the secondary cell that schedules the primary cell; the second secondary cell is a secondary cell other than the first secondary cell among the secondary cells of the UE;
  • the target event is beam failure BF or radio link failure RLF.
  • an embodiment of the present invention provides a radio link recovery method.
  • the method includes: a network device is on a second cell of a UE and receives from the UE a radio link recovery request of the first cell of the UE; wherein , The radio link recovery request of the first cell is used to indicate that the target event occurs in the first cell; the first cell includes at least one of the following: a primary cell, a first secondary cell; the second cell includes at least one of the following: the primary cell, The first secondary cell, the second secondary cell; the first secondary cell is the secondary cell that schedules the primary cell; the second secondary cell is the secondary cell of the UE other than the first secondary cell; the target event is the beam Failure BF or radio link failure RLF.
  • an embodiment of the present invention provides a UE.
  • the UE includes a sending module; the sending module is configured to send a target event to a network device on a second cell of the UE if a target event occurs in a first cell of the UE.
  • Send a radio link recovery request for the first cell where the first cell includes at least one of the following: a primary cell, a first secondary cell; the second cell includes at least one of the following: the primary cell, the first secondary cell, and the second Secondary cell; the first secondary cell is the secondary cell that schedules the primary cell; the second secondary cell is the secondary cell other than the first secondary cell among the UE’s secondary cells; the target event is beam failure BF or radio link failure RLF.
  • an embodiment of the present invention provides a network device, the network device includes: a receiving module; the receiving module is configured to receive the wireless link of the first cell of the UE from the UE on the second cell of the UE. Path recovery request; where the radio link recovery request of the first cell is used to indicate the occurrence of a target event in the first cell; the first cell includes at least one of the following: a primary cell, a first secondary cell; and the second cell includes at least one of the following : The primary cell, the first secondary cell, and the second secondary cell; the first secondary cell is the secondary cell that schedules the primary cell; the second secondary cell is the secondary cell other than the first secondary cell among the secondary cells of the UE;
  • the target event is beam failure BF or radio link failure RLF.
  • an embodiment of the present invention provides a UE including a processor, a memory, and a computer program stored on the memory and capable of running on the processor.
  • the computer program is executed by the processor, The steps of the wireless link recovery method as described in the first aspect are implemented.
  • an embodiment of the present invention provides a network device that includes a processor, a memory, and a computer program stored on the memory and capable of running on the processor.
  • the computer program is executed by the processor, The steps of the wireless link recovery method as described in the second aspect are implemented.
  • an embodiment of the present invention provides a communication system, which includes the UE in the foregoing third aspect and the network device in the foregoing fourth aspect.
  • an embodiment of the present invention provides a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, the steps of the above-mentioned wireless link recovery method are implemented.
  • a target event (BF or RLF) occurs in the first cell of the UE (including at least one of the following: the primary cell, the first secondary cell (the secondary cell that schedules the primary cell)
  • the target event (BF or RLF) occurs in the UE’s
  • the second cell including at least one of the following: the primary cell, the first secondary cell, and the second secondary cell (the secondary cell of the UE other than the first secondary cell)
  • the first secondary cell is sent to the network device.
  • the radio link recovery request of the cell including at least one of the following: the primary cell, the first secondary cell, and the second secondary cell (the secondary cell of the UE other than the first secondary cell).
  • the radio link recovery request of the first cell can be sent to the network device on the second cell (the network device can then send the radio link recovery request of the first cell after receiving the radio link recovery request of the first cell).
  • the target event occurred in the first cell, and then the radio link recovery of the first cell can be further triggered), so that when the secondary cell schedules the primary cell, if the primary cell occurs BF or RLF, or the secondary cell occurs BF Or RLF, which can quickly realize wireless link recovery.
  • FIG. 1 is a schematic diagram of the architecture of a communication system provided by an embodiment of the present invention
  • FIG. 2 is one of the flowcharts of the wireless link recovery method provided by the embodiment of the present invention.
  • FIG. 3 is the second flowchart of the wireless link recovery method provided by the embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of a UE provided by an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of hardware of a UE provided by an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of a network device provided by an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of hardware of a network device provided by an embodiment of the present invention.
  • words such as “exemplary” or “for example” are used to represent examples, illustrations, or illustrations. Any embodiment or design solution described as “exemplary” or “for example” in the embodiments of the present invention should not be construed as being more preferable or advantageous than other embodiments or design solutions. To be precise, words such as “exemplary” or “for example” are used to present related concepts in a specific manner.
  • multiple refers to two or more than two, for example, multiple processing units refers to two or more processing units; multiple elements Refers to two or more elements, etc.
  • Rel-15 introduces the beam failure recovery (BFR) mechanism of the primary cell.
  • BFR beam failure recovery
  • the UE will trigger the beam failure recovery request procedure (ie, beam failure recovery request procedure).
  • the UE will send a random access preamble on the primary cell, and monitor the response of the network equipment on the primary cell (ie, a Cell Radio Network Temporary Identifier (C-RNTI)) plus Disturbed PDCCH).
  • C-RNTI Cell Radio Network Temporary Identifier
  • the UE determines that the (serving) beam corresponding to the cell is restored successfully.
  • Beam failure recovery mechanisms generally include: beam failure detection (Beam failure detection), candidate beam identification (New candidate beam identification), sending beam failure recovery request (BFRQ), and receiving beam failure recovery request response (response for beam) failure recovery request) four items, which are as follows:
  • Beam failure detection The UE measures the beam failure detection reference signal (BFD RS) at the physical layer, and determines whether a beam failure event occurs according to the measurement result.
  • the judgment condition is: if the metric of all serving beams is detected (assuming that the physical downlink control channel block error rate (hypothetical Physical Downlink Control Channel block error rate, hypothetical PDCCHBLER)) meets the preset conditions (such as , Exceeding the preset threshold), it is determined as a beam failure instance (BFI), the UE physical layer reports to the UE higher layer (MAC layer) an indication, the reporting process is periodic, and the BFI reporting period is BFD RS The shortest period, the lower bound is 2ms.
  • BFD RS beam failure detection reference signal
  • the UE physical layer determines that beam failure instance does not occur, it does not send an indication to the higher layer.
  • the upper layer of the UE uses counters and timers to count the BFI reported by the physical layer. It restarts the timer every time it receives the BFI, and the counter recounts when the timer expires. When the counter reaches the maximum number of times configured by the network, the UE determines that it will happen.
  • the beam failure event (beam failure event).
  • the counter and timer of the MAC layer of the UE are configured for each active bandwidth part (BWP), and the start and maintenance of the counter and timer on each BWP are independent, that is, the counter and timer of each BWP Work independently, including starting, resetting, counting, timing, etc.
  • BWP active bandwidth part
  • Candidate beam identification The network device configures a candidate beam reference signal (candidate beam RS) for the UE, and the UE physical layer measures the candidate beam reference signal to find a new candidate beam (candidate beam). This step is not mandatory after the beam failure event occurs, but can also occur before, that is, it can occur at any time.
  • the UE physical layer When the UE physical layer receives a request or instruction or notification from the higher layer of the UE, it will meet the preset condition (measurement layer for candidate beam RS 1-Receiving Power of Reference Signal (Layer 1-Reference Signal Receiving Power, L1-RSRP) exceeds The measurement result of the preset threshold) is reported to the UE upper layer, and the report content is ⁇ beam RS index, L1-RSRP ⁇ , and the UE upper layer selects the candidate beam based on the report of the physical layer.
  • the preset condition (measurement layer for candidate beam RS 1-Receiving Power of Reference Signal (Layer 1-Reference Signal Receiving Power, L1-RSRP) exceeds
  • the measurement result of the preset threshold is reported to the UE upper layer, and the report content is ⁇ beam RS index, L1-RSRP ⁇ , and the UE upper layer selects the candidate beam based on the report of the physical layer.
  • Network equipment will not configure BFR RACH, BFR search space, and BFR CORESET for secondary cells.
  • BF occurs in the secondary cell, if there are uplink resources at this time, it will send a BF recovery request to the network device through the SCell BFR media access control-control element (MAC CE) in the uplink resource scheduled by the PDCCH ,
  • the MAC CE carries the identifier (id) of the secondary cell where the BF occurs. And before receiving the BFR MAC CE, the network equipment cannot determine which secondary cells have BF.
  • the UE If there is no uplink resource when BF occurs in the secondary cell, the UE first sends a Scheduling Request (SR) to request the network device to allocate uplink resources, and then sends the BF recovery to the network device through the SCell BFR MAC CE in the uplink resources allocated by the network device ask.
  • SR Scheduling Request
  • the scheduling request is sent on a scheduling request resource specially configured for the Scell BFR.
  • the network equipment can learn which secondary cell has a BF according to the identifier of the secondary cell carried in the SCell BFR MAC CE. Similar to the Pcell BFR process, the network device also needs to feed back a response to the UE at this time.
  • the response is a C-RNTI scrambled to schedule a newly transmitted uplink grant (UL grant) (the uplink grant is also a PDCCH), and the PDCCH is
  • UL grant the uplink grant is also a PDCCH
  • the carried HARQ process id is the same as the HARQ process id of the SCell BFR MAC CE.
  • DCI Downlink Control Information
  • the new data indicates (New Data Indicator, NDI) flipped DCI.
  • the UE can consider that the Scell BFR is successful and cancel all triggered BFRs (Beam Failure Recovery Procedure successfully completed and cancel all the triggered BFRs for this Serving Cell).
  • Radio link failure Radio linkFailure, RLF
  • the UE In the Long Term Evolution (LTE) system or the 5G New Air Interface (NR) system, the UE has a radio link monitor (Radio link Monitor, RLM) function. Taking the RLM function in the LTE system as an example, the UE monitors the radio link by measuring the signal-to-noise and interference ratio (SINR) of the reference signal (RS). . When the measured reference signal is lower than a certain threshold, the radio link is deemed “out-of-sync" ("out-of-sync, OOS”), and the physical layer of the UE notifies the higher layer (RRC layer) of the UE of an "out-of-sync".
  • SINR signal-to-noise and interference ratio
  • -sync indication
  • the UE if the RRC layer continuously receives N "out-of-sync” indications, the UE starts a timer (Timer) T1; when the measured reference signal is higher than a certain threshold, the radio link is considered For "synchronization" ("in-sync, IS"), the physical layer notifies the RRC layer of an "in-sync” indication. If the RRC layer continuously receives M “in-sync” indications, the UE stops the operation of Timer T1.
  • the number of times (N and M) counted by "out-of-sync" and “in-sync” is configured by the network device, and when the number of times is reached, the running time of the Timer is also configurable by the network device.
  • the UE determines that RLF occurs in the corresponding cell.
  • the wireless link recovery mechanism includes but is not limited to the following two: BF recovery mechanism and RLF recovery mechanism.
  • the secondary cell scheduling the primary cell may belong to a functional feature or capability, and the network equipment or protocol deploys this feature or capability, or the UE supports the feature or capability, indicating that the secondary cell scheduling the primary cell may occur. This means that every time the network equipment is scheduled, the secondary cell schedules the primary cell. It is still possible that the primary cell schedules the secondary cell, the primary cell self-schedules, the secondary cell self-schedules, and the secondary cell tunes to other secondary cells.
  • the secondary cell may schedule the primary cell.
  • the first condition can specifically include any one of the following: 1.
  • the network equipment or protocol is configured with the characteristics that the first secondary cell can schedule the primary cell or the primary cell can be scheduled by other cells; 2.
  • the network equipment or protocol indicates that the first secondary cell can be scheduled by other cells;
  • a secondary cell has the characteristics that the primary cell can be scheduled or the primary cell can be scheduled by other cells; 3.
  • the control signaling of the first secondary cell (may) indicate the primary cell; 4.
  • the primary cell is a scheduled cell; 5.
  • the embodiment of the present invention provides a radio link recovery method. If a target event (BF or RLF) occurs in the first cell of the UE (including at least one of the following: the primary cell, the first secondary cell (the secondary cell that schedules the primary cell)) ), on the second cell of the UE (including at least one of the following: the primary cell, the first secondary cell, and the second secondary cell (a secondary cell other than the first secondary cell among the secondary cells of the UE)), Send the wireless link recovery request of the first cell to the network device.
  • a target event BF or RLF
  • the radio link recovery request of the first cell can be sent to the network device on the second cell (the network device can then send the radio link recovery request of the first cell after receiving the radio link recovery request of the first cell).
  • the target event occurred in the first cell, and then the radio link recovery of the first cell can be further triggered), so that when the secondary cell schedules the primary cell, if the primary cell occurs BF or RLF, or the secondary cell occurs BF Or RLF, which can quickly realize wireless link recovery.
  • the technical solution provided by the present invention can be applied to various communication systems, for example, a 5G communication system, a future evolution system, or a variety of communication convergence systems, and so on. It can include a variety of application scenarios, such as Machine to Machine (M2M), D2M, macro and micro communications, enhanced Mobile Broadband (eMBB), ultra-high reliability and ultra-low latency communications (ultra Scenarios such as Reliable&Low Latency Communication (uRLLC) and Massive Machine Type Communication (mMTC). These scenarios include but are not limited to: communication between the UE and the UE, or the communication between the network device and the network device, or the communication between the network device and the UE, and other scenarios.
  • the embodiments of the present invention can be applied to communication between a network device and a UE in a 5G communication system, or a communication between a UE and a UE, or a communication between a network device and a network device.
  • FIG. 1 shows a schematic diagram of a possible structure of a communication system involved in an embodiment of the present invention.
  • the communication system includes at least one network device 100 (only one in FIG. 1 is described as an example) and one or more UEs 200 connected to each network device 100 (only one in FIG. 1 is taken as an example) instruction).
  • the at least one network device 100 may serve at least one cell group (such as a master cell group (Master Cell Group, MCG) or a secondary cell group (Secondary Cell Group, SCG)).
  • a cell group includes at least one primary cell, and may also include at least one secondary cell; in the embodiment of the present invention, the primary cell is a special cell (SPcell), which can be a Pcell in the MCG or a SCG. PScell.
  • SPcell special cell
  • the communication system shown in FIG. 1 may be a multi-carrier communication system, for example, a carrier aggregation scenario, a dual connection scenario, etc., which is not limited in the embodiment of the present invention.
  • the aforementioned network device 100 may be a base station, a core network device, a transmission and reception point (Transmission and Reception Point, TRP), a relay station, or an access point, etc.
  • the network device 100 may be a base station transceiver station (BTS) in a global system for mobile communication (GSM) or a code division multiple access (Code Division Multiple Access, CDMA) network, or it may be a broadband
  • the NB (NodeB) in Wideband Code Division Multiple Access (WCDMA) may also be the eNB or eNodeB (evolutional NodeB) in LTE.
  • the network device 100 may also be a wireless controller in a cloud radio access network (Cloud Radio Access Network, CRAN) scenario.
  • the network device 100 may also be a network device in a 5G communication system or a network device in a future evolution network.
  • the words do not constitute a limitation to the present invention.
  • the UE 200 may be a wireless UE or a wired UE.
  • the wireless UE may be a device that provides voice and/or other service data connectivity to the user, a handheld device with wireless communication function, a computing device, or other processing connected to a wireless modem Equipment, in-vehicle equipment, wearable equipment, UE in the future 5G network or UE in the future evolved PLMN network, etc.
  • a wireless UE can communicate with one or more core networks via a radio access network (RAN).
  • the wireless UE can be a mobile device, such as a mobile phone (or “cellular” phone) and a computer with mobile devices.
  • Wireless UEs can also be mobile devices, terminal devices, Access terminal equipment, wireless communication equipment, terminal equipment unit, terminal equipment station, mobile station (Mobile Station), mobile station (Mobile), remote station (Remote Station), remote station, remote terminal equipment (Remote Terminal), subscriber unit (Subscriber Unit), Subscriber Station (Subscriber Station), User Agent (User Agent), terminal equipment, etc.
  • FIG. 1 shows that the UE 200 is a mobile phone as an example.
  • the wireless link recovery method may include the following steps 201 to 202.
  • Step 201 If a target event occurs in the first cell of the UE, the UE sends a radio link recovery request of the first cell to the network device on the second cell of the UE.
  • the first cell includes at least one of the following: the primary cell, the first secondary cell; the second cell includes at least one of the following: the primary cell, the first secondary cell, and the second secondary cell; the first secondary cell is for scheduling the The secondary cell of the primary cell, and the second secondary cell is a secondary cell other than the first secondary cell among the secondary cells of the UE; the target event is BF or RLF.
  • the radio link recovery method provided by the embodiment of the present invention can be applied to a scenario where a target event occurs in a primary cell, or a scenario where a target event occurs in a first secondary cell (the secondary cell that schedules the primary cell), or It is applicable to the scenario where the target event occurs in both the primary cell and the first secondary cell, which can be specifically determined according to actual usage requirements, which is not limited in the embodiment of the present invention.
  • the second cell may include any one of the following 7 situations: 1. Primary cell; 2. The first secondary cell; 3. The second secondary cell (except for the UE’s secondary cells) At least one secondary cell other than the first secondary cell); 4. Primary cell and first secondary cell; 5. Primary cell and second secondary cell; 6 First secondary cell and second secondary cell; 7. Primary cell, first secondary cell A secondary cell and a second secondary cell.
  • the radio link recovery request of the first cell is a beam failure recovery request; if RLF occurs in the first cell, the radio link recovery request of the first cell is Wireless link failure recovery request.
  • Step 202 The network device is on the second cell of the UE, and receives a radio link recovery request of the first cell of the UE from the UE.
  • the radio link recovery request of the first cell is used to indicate that a target event occurs in the first cell.
  • the UE's first secondary cell schedules the UE's primary cell
  • the UE and the network device can interact with the first cell through any carrier
  • the specific carrier can be determined according to actual usage requirements, which is not limited in the embodiment of the present invention.
  • the UE's first secondary cell schedules the UE's primary cell
  • the UE may send the first cell's information to the network device through a specific carrier. Wireless link recovery request.
  • step 201 may be specifically implemented by the following step 201a; the foregoing step 202 may be specifically implemented by the following step 202a.
  • Step 201a On the second cell, the UE sends a radio link recovery request of the first cell to the network device through the first bearer.
  • Step 202a The network device is in the second cell and receives the radio link recovery request of the first cell from the UE through the first bearer.
  • the UE sends the radio link recovery request of the first cell to the network device through a specific carrier, which can better and quickly realize the radio link recovery.
  • the first bearer may include at least one of the following: target RACH, target scheduling request, target MAC CE.
  • the first bearer may include one or more of a target random access channel RACH, a target scheduling request, and a target medium access control-control unit MAC CE.
  • the UE can send a radio link recovery request of the first cell to the network device through a first carrier on the cell (the network device can be on this cell through a The first carrier receives the radio link recovery request of the first cell from the UE); the UE can send the radio link recovery request of the first cell to the network device through different first carriers on the cell (the network device can In the cell, the radio link recovery request of the first cell is received from the UE through different first bearers).
  • the target event is BF
  • the first cell is the first secondary cell
  • the second cell is the primary cell.
  • BF occurs in the first secondary cell.
  • the UE can be on the primary cell and send a radio link failure recovery request to the network device through the target RACH corresponding to the primary cell; in another case, the UE can be on the primary cell, Through the target RACH corresponding to the primary cell and the target scheduling request corresponding to the primary cell, a radio link failure recovery request is sent to the network device respectively.
  • the UE can be in different cells, and send the radio link recovery request of the first cell to the network device through the same first carrier (the network device can be in different cells through the same first carrier).
  • the first carrier receives the radio link recovery request of the first cell from the UE); the UE may be in different cells and send the radio link recovery request of the first cell to the network device through different first carriers (the network device may In different cells, the radio link recovery request of the first cell is received from the UE through different first bearers).
  • the target event is BF
  • the first cell is the primary cell
  • the second cell is the primary cell
  • the first secondary cell occurs in the primary cell.
  • the UE can send the beam failure recovery request of the first cell to the network device through the target RACH corresponding to the primary cell on the primary cell.
  • the UE is on the first secondary cell through the first secondary cell.
  • the target RACH corresponding to the cell sends the beam failure recovery request of the first cell to the network device; in another case, the UE can send the beam failure recovery request of the first cell to the network device through the target RACH corresponding to the primary cell on the primary cell At the same time, on the first secondary cell, the UE sends the beam failure recovery request of the first cell to the network device through the target MAC CE corresponding to the first secondary cell.
  • the first carrier may also be another feasible carrier, which is not limited in the embodiment of the present invention.
  • first carriers are provided, which is beneficial to quickly realize wireless link recovery.
  • the first bearer includes the target RACH, the first bearer includes the target scheduling request, and the first bearer includes the target MAC CE.
  • the first carrier includes the target RACH.
  • the target RACH is used to restore the radio link of the first cell.
  • the target RACH may be dedicated to restore the radio link of the first cell, or may be used in addition to restoring the radio link of the first cell.
  • the radio link of the cell it can also be used for other functions, which can be specifically determined according to actual usage requirements, which is not limited in the embodiment of the present invention.
  • the first carrier includes the target scheduling request.
  • the target scheduling request is at least one of N scheduling requests for restoring the radio link of the first cell, and N is Positive integer.
  • the target scheduling request is any at least one of the N scheduling requests for restoring the radio link of the first cell, or it may be at least one of the N scheduling requests that meets certain conditions. , Which can be specifically determined according to actual use requirements, and is not limited in the embodiment of the present invention.
  • the N scheduling requests are scheduling requests for restoring the radio link of the primary cell, or the N scheduling requests are scheduling requests for restoring the primary cell and the first secondary cell.
  • the N scheduling requests are scheduling requests for restoring the radio link of the first secondary cell, or the N scheduling requests are for restoring the primary The scheduling request of the radio link between the cell and the first secondary cell.
  • the N scheduling requests may be scheduling requests dedicated to restoring the radio link of the first cell, or scheduling requests not dedicated to restoring the radio link of the first cell ( That is, the N scheduling requests can be used for other scheduling besides restoring the radio link of the first cell), which is not limited in the embodiment of the present invention.
  • the target scheduling request is at least one of the N scheduling requests for restoring the radio link of the first cell, which can better and quickly realize the radio link restoration.
  • each of the M scheduling requests in the N scheduling requests is associated with a candidate beam reference signal, and M is a positive integer less than or equal to N.
  • each of the M scheduling requests is associated with at least one candidate beam reference signal.
  • none of the (N-M) scheduling requests are associated with candidate beam reference signals except for the M scheduling requests associated with candidate beam reference signals.
  • the target scheduling request may include a candidate beam reference signal associated with it, and may also include a scheduling request not associated with a candidate beam reference signal, which can be specifically determined according to actual usage requirements, which is not limited in the embodiment of the present invention.
  • the N scheduling requests may include scheduling requests associated with candidate beam reference signals, or scheduling requests not associated with candidate beam reference signals. In this way, multiple possibilities are provided for the target scheduling request. The choice can better and quickly realize the wireless link recovery.
  • the target scheduling request is determined based on the measurement result of the candidate beam reference signal associated with each of the M scheduling requests.
  • the target scheduling request is at least one of the M scheduling requests.
  • the target scheduling request is at least one of the M scheduling requests, which can better and quickly realize wireless link recovery.
  • the target scheduling request may also be any at least one of the M scheduling requests.
  • the target scheduling request in the case that the target scheduling request is determined based on the measurement result of the candidate beam reference signal associated with each of the M scheduling requests, the target scheduling request is the first candidate A scheduling request corresponding to the beam reference signal; where the first candidate beam reference signal is a candidate beam reference signal that meets a predetermined condition.
  • the predetermined condition includes any one of the following: the first candidate beam reference signal is a candidate whose measurement result is greater than or equal to the first threshold among the candidate beam reference signals associated with the M scheduling requests Beam reference signal; the first candidate beam reference signal is at least one of the candidate beam reference signals associated with the M scheduling requests with the smallest index of the corresponding candidate beam; the first candidate beam reference signal is the candidate associated with the M scheduling requests Among the beam reference signals, at least one of the corresponding candidate beams has the largest index; the first candidate beam reference signal is the index of the corresponding candidate beam from among the candidate beam reference signals associated with the M scheduling requests. At least one of the most recent.
  • the value range of the first threshold may be determined according to actual use requirements, which is not limited in the embodiment of the present invention.
  • the target scheduling request is a scheduling request corresponding to a candidate beam reference signal that meets a predetermined condition, which can better and quickly realize wireless link recovery.
  • a variety of possible scenarios of predetermined conditions are provided, so a more appropriate target scheduling request can be determined according to actual use requirements, so as to better and quickly achieve wireless link recovery.
  • the target scheduling request is a scheduling request that is not associated with candidate beam reference signals.
  • the target scheduling request may be any at least one of the scheduling requests for the unassociated candidate beam reference signal.
  • the target scheduling request is a scheduling request associated with a candidate beam reference signal that the UE has not detected (it is understandable that at least one scheduling request in the target scheduling request may be associated with a candidate beam reference signal, but The UE has not detected its associated candidate beam reference signal).
  • the target scheduling request may be any at least one of the scheduling requests in which the UE does not detect the associated candidate beam reference signal.
  • multiple solutions for obtaining the target scheduling request are provided, so that a more suitable target scheduling request can be determined according to actual use requirements, so as to better and quickly realize the wireless link recovery.
  • the first carrier includes the target MAC CE.
  • the UE in the case where the first carrier includes the target MAC CE, the UE needs to first determine whether there are suitable available uplink resources on the second cell, and if there are suitable available uplink resources, then Send the target MAC CE to the network device through the uplink resource; otherwise, the UE needs to request the network device for the uplink resource first.
  • the above step 201a can be specifically implemented by the following step 201b; the above step 202a can be specifically implemented by the following step 202b .
  • Step 201b If the first uplink resource exists in the second cell, the UE sends the radio link recovery request of the first cell to the network device through the target MAC CE on the first uplink resource.
  • Step 202b If the first uplink resource exists in the second cell, the network device receives the radio link recovery request of the first cell from the UE through the target MAC CE on the first uplink resource.
  • the first uplink resource is a suitable and available uplink resource existing on the second cell.
  • uplink resource is the first uplink resource.
  • the radio link recovery method provided in the embodiment of the present invention may further include the following step 203 -Step 204.
  • Step 203 If there is no uplink resource in the second cell, the UE sends a first scheduling request to the network device.
  • Step 204 If there is no uplink resource in the second cell, the network device receives the first scheduling request from the UE.
  • the wireless link recovery method provided by the embodiment of the present invention may further include the following steps 205 to step 206; the above step 201a can be specifically implemented by the following step 201c; the above step 202a Specifically, it can be implemented through the following step 202c.
  • Step 205 The network device sends the target uplink authorization to the UE.
  • Step 206 The UE receives the target uplink authorization from the network equipment.
  • Step 201c The UE sends a radio link recovery request of the first cell to the network device through the target MAC CE on the uplink resource corresponding to the target uplink authorization of the second cell.
  • Step 202c The network device receives the radio link recovery request of the first cell from the UE through the target MAC CE on the uplink resource corresponding to the target uplink authorization of the second cell.
  • the schemes of how to use the target MAC CE to send the radio link recovery request of the first cell to the network device are provided respectively. In this way, wireless link recovery can be achieved better and faster.
  • the first scheduling request satisfies any one of the following: a scheduling request for restoring a radio link of the first cell, and a scheduling request for restoring a radio link of any secondary cell.
  • the first scheduling request is used for restoring the radio link of the first cell, specifically including that the first scheduling request can be dedicated to restoring the radio link of the first cell, or the first scheduling request can be used for restoring the radio link of the first cell.
  • the wireless link of a cell it can also be used for other functions.
  • the first scheduling request is used to restore the radio link of any secondary cell, specifically including that the first scheduling request can be dedicated to restoring the radio link of any secondary cell, or the first scheduling request can be used to restore any radio link in addition to any secondary cell.
  • the wireless link of the secondary cell it can also be used for other functions.
  • the first scheduling request is a scheduling request for restoring the radio link of the primary cell, or is a radio link for restoring the primary cell and the first secondary cell
  • the scheduling request is, or, is a scheduling request for restoring the radio link of any secondary cell.
  • the first scheduling request is a scheduling request for restoring the radio link of the first secondary cell, or is used for restoring the primary cell and the first secondary cell
  • the first scheduling request may also be any scheduling request, which is not limited in the embodiment of the present invention.
  • first scheduling requests are provided, so that the first scheduling request can be determined according to actual usage requirements, and when the first scheduling request is a scheduling request for restoring the radio link of the first cell
  • the wireless link recovery can be better and quickly achieved.
  • the foregoing step 205 to step 206 may be specifically implemented by the following step 205a to step 206a.
  • Step 205a The network device sends a target uplink grant to the UE on a cell other than the first cell among the cells of the UE.
  • the network device When the network device receives the first scheduling request for restoring the radio link of the first cell, it can learn that the target event has occurred in the first cell, and thus send the target to the UE on a cell other than the first cell in the UE’s cells. Uplink authorization, which can ensure that the UE can receive the target uplink authorization.
  • Step 206a The UE receives the target uplink authorization from the network device in a cell other than the first cell among the cells of the UE.
  • the network device when a target event occurs in the first cell, after receiving the first scheduling request for restoring the radio link of the first cell, the network device sends the UE from a cell other than the first cell. Sending the target uplink authorization can ensure that the UE can receive the target uplink authorization, so that the radio link recovery can be better and quickly achieved.
  • the foregoing step 205 to step 206 may be specifically implemented by the following step 205b to step 206b.
  • Step 205b The network device sends the target uplink grant to the UE on any secondary cell except the primary cell and the first secondary cell among the cells of the UE.
  • the network device When the network device receives the first scheduling request for restoring the radio link of any secondary cell, it can learn that a target event has occurred in a cell, but it does not know which cell or cells have the target event, so the network device is in the UE’s cell In any secondary cell except the primary cell and the first secondary cell, sending the target uplink authorization to the UE can ensure that the UE can receive the target uplink authorization, so that the radio link recovery can be better and quickly achieved.
  • Step 206b The UE receives the target uplink authorization from the network device on any secondary cell except the primary cell and the first secondary cell among the cells of the UE.
  • the network device when a target event occurs in the first cell, after the network device receives the first scheduling request for restoring the radio link of any secondary cell, the network device will send the data from other than the primary cell and the first secondary cell.
  • the UE sending the target uplink authorization on any secondary cell can ensure that the UE can receive the target uplink authorization, so that the radio link recovery can be better and quickly achieved.
  • the target MAC CE satisfies at least one of the following: it is used to restore the radio link of the first cell and carries a target identifier; where the target identifier is used to indicate the first cell.
  • the target MAC CE is associated with the first cell.
  • the target MAC CE may be a MAC CE used to restore the radio link of the first cell, may also be a MAC CE carrying a target identifier, or may be a MAC CE used to restore the radio link of the first cell and carry The MAC CE of the target ID.
  • the target MAC CE is the MAC CE used to restore the radio link of the first cell.
  • the target MAC CE may be the MAC CE used to restore the radio link of the primary cell.
  • the MAC CE may also be the MAC CE used to restore the radio link between the primary cell and the first secondary cell; in the case where the first cell includes the first secondary cell, the target MAC CE may be used to restore the first secondary cell.
  • the MAC CE of the radio link may also be the MAC CE used to restore the radio link between the primary cell and the first secondary cell.
  • the target MAC CE is a MAC CE carrying a target identifier.
  • the target identifier may be at least one identifier.
  • the target identifier may be any of the following: the identifier of the primary cell, the identifier of the first secondary cell, the identifier of any secondary cell, the identifier of the primary cell and the identifier of the first secondary cell, The joint identity of the primary cell and the first secondary cell.
  • the target identifier may also be other, which is not limited in the embodiment of the present invention.
  • the joint identity of the primary cell and the first secondary cell may be a certain identity corresponding to the combination of the primary cell and the first secondary cell, that is, different combinations of cells correspond to different identities.
  • the identity of the cell may be the id of the cell or the index of the cell, or may be other feasible content, which is not limited in the embodiment of the present invention.
  • the target identifier when the first cell is the primary cell, the target identifier is used to indicate the primary cell, and the target identifier can be any of the following: the identifier of the primary cell, the identifier of the first secondary cell, the identifier of any secondary cell , The identity of the primary cell and the identity of the first secondary cell, and the joint identity of the primary cell and the first secondary cell.
  • the target identifier is used to indicate the first secondary cell
  • the target identifier can be any of the following: the identifier of the primary cell, the identifier of the first secondary cell, any one The identity of the secondary cell, the identity of the primary cell and the identity of the first secondary cell, and the joint identity of the primary cell and the first secondary cell.
  • the target identifier is used to indicate the primary cell and the first secondary cell
  • the target identifier can be any of the following: the identifier of the primary cell, the first secondary cell The identity of the cell, the identity of any secondary cell, the identity of the primary cell and the identity of the first secondary cell, and the joint identity of the primary cell and the first secondary cell.
  • the target identifier may include the first identifier and the second identifier.
  • the first identifier is used to indicate the primary cell
  • the second identifier is used to indicate the first secondary cell.
  • first identifier and the second identifier can refer to the above-mentioned related description of the target identifier, which will not be repeated here.
  • the target identifier indicates the first cell.
  • the target identifier itself may indicate the first cell, or a parameter corresponding to the target identifier may indicate the first cell. It may also be in other situations.
  • the embodiments of the invention are not limited. For example, for a bitmap, each bit corresponds to a cell. At this time, a bit of 1 means that the corresponding cell has BF, and 0 means that the corresponding cell does not have BF. At this time, the target ID is not the cell ID (for example, , Id) is a bit corresponding to the cell identifier.
  • the network device when the target MAC CE is associated with the first cell, the network device can quickly learn that the target event has occurred in the first cell according to the target MAC CE, so that the radio link recovery can be better and quickly achieved.
  • the target MAC CE may also be a MAC CE that is not associated with the first cell, which is not limited in the embodiment of the present invention.
  • the target MAC CE carries at least one of the following: the index of the target candidate beam, first indication information; the first indication information is used to indicate that the UE has detected the target candidate Beam; if the UE does not detect the target candidate beam, the target MAC CE carries second indication information; the second indication information is used to indicate that the UE does not detect the target candidate beam.
  • At least one of the index of the target candidate beam and the first indication information is carried in the target MAC CE, or the second indication information is carried, so that the network equipment can learn whether the UE detects a suitable radio
  • the target candidate beam for link recovery can better and quickly realize wireless link recovery.
  • the target MAC CE carries at least one of the following: the index of the target candidate beam, first indication information; first The indication information is used to indicate that the UE detects the target candidate beam; if the UE does not detect the target candidate beam, the target MAC CE carries second indication information; the second indication information is used to indicate that the UE does not detect the target Candidate beam.
  • the UE detects a target candidate beam, at least one of the first scheduling request and the target MAC CE carries at least one of the following: the target candidate beam Index, the first indication information; the first indication information is used to indicate that the UE has detected the target candidate beam (that is, divided into three cases, the first one, the first scheduling request carries at least one of the following: the target candidate beam The index of the first indication information; the second type, the target MAC CE carries at least one of the following: the index of the target candidate beam, the first indication information; the third type, both the first scheduling request and the target MAC CE Carry at least one of the following: the index of the target candidate beam, the first indication information); if the UE does not detect the target candidate beam, at least one of the first scheduling request and the target MAC CE carries second indication information; The second indication information is used to indicate that the UE has not detected the target candidate beam (that is, there are three cases, the first is the second
  • At least one of the index of the target candidate beam and the first indication information is carried in at least one of the first scheduling request and the target MAC CE, or the second indication information is carried, which can facilitate the network device to learn Whether the UE detects a suitable target candidate beam for radio link recovery, so that the radio link recovery can be better and quickly achieved.
  • the target MAC CE is associated with (at least one) candidate beam reference signal.
  • the target MAC CE carries at least one of the index of the target candidate beam and the first indication information
  • the target MAC CE is associated with (at least one) candidate beam reference signal
  • the UE is based on the candidate beam reference associated with the target MAC CE
  • the measurement result of the signal detected a suitable target candidate beam.
  • the target MAC CE carries the second indication information
  • the target MAC CE is associated with (at least one) candidate beam reference signal, and the UE does not detect the appropriate (that is, meets) the measurement result of the candidate beam reference signal associated with the target MAC CE.
  • Certain conditions, specific conditions can refer to the above description of the predetermined conditions, which will not be repeated here) of the target candidate beam.
  • the target MAC CE may also be a MAC CE that is not associated with candidate beam reference signals.
  • the target MAC CE may also be a MAC CE that is not detected by the UE associated with the candidate beam reference signal (it can be understood that the target MAC CE may be associated with the candidate beam reference signal, but the UE does not detect it. Associate candidate beam reference signals).
  • the first scheduling request is associated with (at least one) candidate beam reference signal.
  • the first scheduling request carries at least one of the index of the target candidate beam and the first indication information
  • the first scheduling request is associated with (at least one) candidate beam reference signal
  • the UE is associated with the reference signal based on the first scheduling request.
  • the measurement result of the candidate beam reference signal detects a suitable target candidate beam (that is, satisfies a specific condition, and the specific condition can refer to the foregoing description of the predetermined condition, which will not be repeated here).
  • the first scheduling request carries the second indication information
  • the first scheduling request is associated with (at least one) candidate beam reference signal
  • the UE does not detect a suitable beam reference signal based on the measurement result of the candidate beam reference signal associated with the first scheduling request.
  • Target candidate beam
  • the first scheduling request may also be a scheduling request not associated with candidate beam reference signals.
  • the first scheduling request may also be a scheduling request for which the UE does not detect the candidate beam reference signal (it can be understood that the first scheduling request may be associated with the candidate beam reference signal, but the UE does not detect it. To its associated candidate beam reference signal).
  • the UE needs to first obtain resources for restoring the radio link of the first cell.
  • the wireless link recovery method provided in the embodiment of the present invention may further include the following step 207.
  • Step 207 The UE obtains first target configuration information.
  • the first target configuration information is used to restore the radio link of the first cell.
  • the first target configuration information may be dedicated to restoring the radio link of the first cell; the first target configuration information may also be used to restore the radio link of the first cell and to remove Resume other scheduling except the radio link of the first cell.
  • the first target configuration information is used for restoring the radio link of the first cell and also used for scheduling other than restoring the radio link of the first cell: a possible situation, the first target configuration information It can be used for restoring the wireless link of the first cell, and can also be used for other scheduling. In another possible situation, the first target configuration information includes configuration information for restoring the radio link of the first cell, and also includes configuration information for other scheduling.
  • the UE after the UE obtains the first target configuration information, it can determine the second cell according to the first target configuration information, and then send the radio link recovery request of the first cell to the network device on the second cell, thereby Can better and quickly realize wireless link recovery.
  • the first target configuration information can be determined by the UE itself, or pre-configured by the network equipment for the UE, or specified by the protocol, or other feasibility conditions, which can be determined according to actual usage requirements.
  • the embodiment of the present invention is not limited.
  • the radio link recovery method provided in the embodiment of the present invention may further include the following step 208; the above step 207 Specifically, it can be implemented through the following step 207a.
  • Step 208 The network device sends first target configuration information to the UE.
  • Step 207a The UE receives the first target configuration information from the network device.
  • the cell of the UE where the first target configuration information is obtained may be the same or different from the first cell (that is, the first target configuration information is used for the radio link of the first cell).
  • the cell from which the first target configuration information is obtained may be the first cell, or may be another cell other than the first cell), which is not limited in the embodiment of the present invention.
  • the network device issues the first target configuration information in the cell C, and the first target configuration information is used in the request process in the radio link recovery process of the cell B.
  • Step 201d The UE sends a radio link recovery request of the first cell to the network device on the second cell according to the first target configuration information.
  • Step 202d The network device receives the radio link recovery request of the first cell from the UE on the second cell according to the first target configuration information.
  • the UE determines the second cell according to the first target configuration information, and sends the radio link recovery request of the first cell to the network device on the second cell, so that the radio link can be realized better and quickly. Road restoration.
  • the first target configuration information includes at least one (one or more) of the following: configuration information related to the primary cell, configuration information related to the first secondary cell, the primary cell and the first The configuration information related to the secondary cell association.
  • the configuration information related to the primary cell is used for the radio link recovery of the primary cell
  • the configuration information related to the first secondary cell is used for the radio link recovery of the first secondary cell.
  • the configuration information related to cell association is used for at least one of the radio link recovery of the primary cell and the radio link recovery of the first secondary cell.
  • the first target configuration information is used for the radio link recovery of the first cell, but the first target configuration information can be configured on any cell.
  • the configuration information related to the primary cell is used for the radio link recovery of the primary cell, but the configuration information related to the primary cell can be configured on at least one of the primary cell, the first secondary cell, and other secondary cells. It is determined according to actual usage requirements, and is not limited in the embodiment of the present invention.
  • the Pcell BFR RACH is configured on the Scheduling Scell, for example, for the Pcell BF, the Pcell BFR RACH is configured on the Scheduling Scell, and the UE sends the Pcell BFR RACH on the Scheduling Scell to send a BFR request to the network device.
  • the first target configuration information includes at least one (one or more) of the following: configuration information related to the primary cell configured by the network device for the UE, and the first target configuration information configured by the network device for the UE Configuration information related to the secondary cell, and configuration information related to the primary cell and the first secondary cell jointly configured by the network device for the UE.
  • each configuration information in the first target configuration information includes at least one of the following: the RACH of the corresponding cell, and the scheduling request of the corresponding cell.
  • the configuration information related to the primary cell includes at least one of the following: the RACH of the primary cell, and the scheduling request of the primary cell.
  • the configuration information related to the first secondary cell includes at least one of the following: RACH of the first secondary cell, and scheduling request of the first secondary cell.
  • the configuration information associated with the primary cell and the first secondary cell includes at least one of the following: RACH, the scheduling request of the primary cell and the first secondary cell.
  • the first target configuration information can be determined according to actual use requirements, so that the wireless link recovery can be better and quickly realized.
  • the network device may send a radio link recovery response of the first cell to the UE when accepting the radio link recovery request of the first cell of the UE.
  • the wireless link recovery method provided in the embodiment of the present invention may further include the following steps 209 to 210.
  • Step 209 On the third cell, the network device sends a radio link recovery response of the first cell to the UE.
  • Step 210 The UE is on the third cell and receives a radio link recovery response of the first cell from the network device.
  • the third cell is at least one of the second cells.
  • the network device may send the radio link recovery response of the first cell to the UE through any resource when accepting the radio link recovery request of the first cell of the UE.
  • the radio link of the first cell is successfully recovered.
  • the network device sends a radio link recovery response of the first cell to the UE on a specific resource.
  • the foregoing step 209 may be specifically implemented by the following step 209a; the foregoing step 210 may be specifically implemented by the following step 210a.
  • Step 209a The network device sends a radio link recovery response of the first cell to the UE on the first resource of the third cell.
  • Step 210a The UE receives the radio link recovery response of the first cell from the network device on the first resource of the third cell.
  • the network device sends the radio link recovery response of the first cell to the UE on a specific resource, which can better and quickly realize the radio link recovery.
  • the first resource includes at least one of the following: a target CORESET, a target search space, and a target common search space (CSS) when the third cell includes the primary cell.
  • a target CORESET a target CORESET
  • a target search space a target search space
  • a target common search space SCS
  • the first resource includes: the target public search space when the third cell includes the primary cell. Specifically, when and only when the third cell includes the primary cell, the first resource includes the target public search space. space.
  • the target common search space may include at least one of type0/0A/1/2/3CSS.
  • the first resource may include a target CORESET and a target search space
  • the third cell includes one or more of the target common search space (Common Search Space, CSS) when the primary cell is included.
  • Common Search Space CSS
  • the network device can send the radio link recovery response of the first cell to the UE on a first resource of the cell (the UE can be in a first resource of the cell).
  • receive the radio link recovery response of the first cell from the network device the network device may also send the radio link recovery response of the first cell to the UE on different first resources of the cell (the UE may Receive the radio link recovery response of the first cell from the network device on different first resources of the cell).
  • the target event is RLF
  • the first cell is the first secondary cell
  • the second cell is the primary cell
  • the third cell is the primary cell.
  • RLF occurs in the first secondary cell.
  • the network device can send a radio link failure recovery response to the UE on the target CORESET of the primary cell; in another case, the UE can communicate with the primary cell on the target CORESET of the primary cell. In the target search space of the cell, the radio link failure recovery response is sent to the UE respectively.
  • the target event is BF
  • the first cell is the primary cell
  • the second cell is the first secondary cell
  • the third cell is the first secondary cell.
  • BF occurs in the primary cell.
  • the network device may send the beam failure recovery response of the first cell to the UE on the target SS on the first secondary cell.
  • the network device can send the radio link recovery response of the first cell to the UE on the same first resource in different cells (the UE can be in the same first resource in different cells).
  • the network device receives the radio link recovery response of the first cell); the network device can also send the radio link recovery response of the first cell to the UE on different first resources of different cells (the UE can On different first resources of different cells, the radio link recovery response of the first cell is received from the network device).
  • the target event is BF
  • the first cell is the primary cell
  • the second cell is the primary cell
  • the third cell is the primary cell and the first secondary cell.
  • BF occurs in the primary cell.
  • the network device can send the beam failure recovery response of the first cell to the UE on the target CORESET of the primary cell, and at the same time, the network device can send to the UE on the target CORESET of the first secondary cell
  • the beam failure recovery response of the first cell in another case, the network device can send the beam failure recovery response of the first cell to the UE on the target CORESET of the primary cell, and the network device is in the target search space of the first secondary cell
  • the first resource may also be other feasible resources, which is not limited in the embodiment of the present invention.
  • a plurality of first resources are provided, which is beneficial to quickly realize wireless link recovery.
  • the target CORESET is the CORESET used to restore the radio link of the first cell (denoted as case 1); and/or, In the case where the first resource includes the target search space, the target search space is a search space used to restore the radio link of the first cell (denoted as case 2).
  • case 1 and case 2 may be satisfied at the same time, or may not be satisfied at the same time, which is not limited in the embodiment of the present invention.
  • the target CORESET is the CORESET used to restore the radio link of the primary cell, or is the CORESET used to restore the radio link of the primary cell and the first secondary cell .
  • the target CORESET is the CORESET used to restore the radio link of the first secondary cell, or is used to restore the radio link of the primary cell and the first secondary cell. CORESET of the link.
  • the target CORESET may be used for other functions besides restoring the radio link of the first cell.
  • the target search space is the search space used to restore the radio link of the primary cell, or is used to restore the radio link of the primary cell and the first secondary cell Search space.
  • the target search space is a search space used to restore the radio link of the first secondary cell, or is used to restore the primary cell and the first secondary cell The search space of the wireless link.
  • the target search space may be used for other functions besides restoring the search space of the radio link of the first cell.
  • the target CORESET is the CORESET used to restore the wireless link of the first cell; and/or, the target search space is the search space used to restore the wireless link of the first cell, which can better Quickly realize wireless link recovery.
  • the first resource includes the target CORESET
  • at least one search space associated with the target CORESET in a case where the first resource includes the target CORESET.
  • the foregoing step 209a may be specifically implemented by the following step 209b; the foregoing step 210a may be specifically implemented by the following step 210b.
  • Step 209b The network device sends a radio link recovery response of the first cell to the UE in at least one search space associated with the target CORESET.
  • Step 210b The UE receives a radio link recovery response of the first cell from the network device in at least one search space associated with the target CORESET.
  • the at least one search space is the target search space.
  • the target CORESET can be the CORESET dedicated to the radio link of the first cell, or it can be the CORESET not dedicated to the radio link of the first cell; at least one search space can be dedicated The search space of the wireless link in the first cell may also be a search space not dedicated to the wireless link of the first cell; the target search space may be a search space dedicated to the wireless link of the first cell, or it may be The search space of the wireless link not dedicated to the first cell.
  • the network device sends the radio link recovery response of the first cell to the UE in at least one search space associated with the target CORESET, which can better and quickly realize the radio link recovery.
  • the radio link recovery response of the first cell is carried on the PDCCH scrambled by the target radio network temporary identifier (RNTI).
  • RNTI target radio network temporary identifier
  • the target RNTI is a cell-RNTI (C-RNTI) or an RNTI used to restore the radio link of the first cell (may be referred to as a radio link recovery RNTI).
  • C-RNTI cell-RNTI
  • RNTI used to restore the radio link of the first cell may be referred to as a radio link recovery RNTI.
  • the hybrid automatic repeat request (Hybrid Automatic Repeat reQuest, HARQ) process number (that is, HARQ Process) in the PDCCH scrambled by the target RNTI number, HPN) is the same as the HPN corresponding to the target MAC CE.
  • HARQ Hybrid Automatic Repeat reQuest
  • the PDCCH scrambled by the target RNTI is scheduled for uplink transmission.
  • the NDI of the PDCCH scrambled by the target RNTI is reversed.
  • the radio link recovery response of the first cell is a random access response (Random Access Response, RAR).
  • RAR Random Access Response
  • the radio link recovery response of the first cell is RAR.
  • the radio link recovery response of the first cell is RAR.
  • the radio link recovery response of the first cell may also be in other forms or contents, which is not limited in the embodiment of the present invention.
  • the UE monitoring network device response may include at least one of the following:
  • C-RNTI PDCCH or RAR Monitor the network device response (C-RNTI PDCCH or RAR) on the Scheduling Scell. For example, when BF occurs in Pcell, C-RNTI PDCCH is monitored on Scheduling Scell.
  • C-RNTI PDCCH or RAR Monitor the network device response (C-RNTI PDCCH or RAR) on the Pcell CSS or Pcell BFR SS. For example, when BF occurs in Scheduling Scell, the C-RNTI PDCCH or RAR is monitored on the Pcell CSS or BFR SS. Further, the C-RNTI PDCCH is monitored on Pcell CSS#3 or CSS#1 or BFRSS; or, the RAR is monitored on Pcell CSS#1.
  • C-RNTI PDCCH or RAR Monitoring network device response
  • the following takes the form of the radio link recovery response of the first cell as C-RNTI PDCCH, the target event as BF, the primary cell as Pcell, and the first secondary cell as Scheduling Scell as an example for illustration.
  • the BFR SS is configured for the Pcell of the UE
  • the SS is configured for the Scheduling Scell
  • the SS is configured for the PUCCH Scell (indicating the second secondary cell) of the UE.
  • the UE receives the C-RNTI PDCCH from the network equipment, which indicates that the BFR is successful. Further, if the UE receives the C-RNTI and PDCCH from at least one cell (the third cell) in the second cell, it indicates that the BFR is successful.
  • Example a The UE receives the corresponding C-RNTI and PDCCH from Pcell, Scheduling Scell, PUCCH Scell, and considers that the BFR is successful.
  • Example b The UE receives the corresponding C-RNTI and PDCCH from two serving cells (two of the Pcell, Scheduling Scell, PUCCH, and Scell) and considers that the BFR is successful. For example, when the BFR SS of the Pcell and a certain SS on the Scheduling Scell (which may be any specific search space (UE-specific search space, USS), or the BFR SS configured for the Scheduling Scell) both receive the C -The BFR is considered successful only when RNTI PDCCH.
  • UE-specific search space UE-specific search space, USS
  • Example c When the UE receives the corresponding C-RNTI PDCCH from any serving cell, it considers that the BFR is successful.
  • a certain common search space of the Pcell it considers that the BFR is successful. For example, if the UE receives the C-RNTI PDCCH in the Pcell BFR SS, it considers that the BFR is successful. For example, if the UE receives the corresponding C-RNTI PDCCH in the Scheduling Scell, it considers that the BFR is successful.
  • the radio link recovery response of the first cell is provided in the form of PDCCH scrambled by the target RNTI, or the radio link recovery response of the first cell is in the form of RAR, which can be better based on actual use requirements. Realize wireless link recovery quickly.
  • the wireless link recovery method provided in the embodiment of the present invention may further include the following step 211.
  • Step 211 The UE obtains second target configuration information.
  • the second target configuration information is used to restore the radio link of the first cell.
  • the second target configuration information may be dedicated to restoring the radio link of the first cell; the second target configuration information may also be used both to restore the radio link of the first cell and to remove the radio link of the first cell. Resume other scheduling except the radio link of the first cell.
  • the second target configuration information is used for restoring the radio link of the first cell and also used for scheduling other than restoring the radio link of the first cell: a possible situation, the second target configuration information It can be used for restoring the wireless link of the first cell, and can also be used for other scheduling. In another possible situation, the second target configuration information includes configuration information for restoring the radio link of the first cell, and also includes configuration information for other scheduling.
  • the UE after the UE obtains the second target configuration information, it can receive the radio link recovery response of the first cell from the network device on the second cell according to the second target configuration information, so that it can be better and faster Realize wireless link recovery.
  • the second target configuration information can be determined by the UE itself, or pre-configured by the network equipment for the UE, or specified by the protocol, or other feasibility conditions, which can be determined according to actual usage requirements.
  • the embodiment of the present invention is not limited.
  • the radio link recovery method provided in the embodiment of the present invention may further include the following step 212; the above step 211 Specifically, it can be implemented through the following step 211a.
  • Step 212 The network device sends second target configuration information to the UE.
  • Step 211a The UE receives second target configuration information from the network device.
  • the cell of the UE where the second target configuration information is obtained may be the same or different from the first cell (that is, the second target configuration information is used for the radio link of the first cell).
  • the cell from which the second target configuration information is obtained may be the first cell, or may be another cell other than the first cell), which is not limited in the embodiment of the present invention.
  • the network device issues the second target configuration information in the cell C, and the second target configuration information is used in the response process in the radio link recovery process of the cell B.
  • Step 209c The network device sends a radio link recovery response of the first cell to the UE on the third cell according to the second target configuration information.
  • Step 210c The UE receives the radio link recovery response of the first cell from the network device on the third cell according to the second target configuration information.
  • the UE receives the radio link recovery response of the first cell from the network device on the second cell according to the second target configuration information, so that the radio link recovery can be achieved better and quickly.
  • the second target configuration information includes at least one (one or more) of the following: configuration information related to the primary cell, configuration information related to the first secondary cell, the primary cell and the first The configuration information related to the secondary cell association.
  • the second target configuration information includes at least one (one or more) of the following: configuration information related to the primary cell configured by the network device for the UE, and the network device configured for the UE Configuration information related to a secondary cell, and configuration information related to the primary cell and the first secondary cell jointly configured by the network device for the UE.
  • each configuration information in the second target configuration information includes at least one of the following: the CORESET of the corresponding cell, and the search space of the corresponding cell.
  • the configuration information related to the primary cell includes at least one of the following: CORESET of the primary cell, and search space of the primary cell.
  • the configuration information related to the first secondary cell includes at least one of the following: CORESET of the first secondary cell, and search space of the first secondary cell.
  • the configuration information associated with the primary cell and the first secondary cell includes at least one of the following: CORESET, the search space of the primary cell and the first secondary cell.
  • the second target configuration information can be determined according to actual use requirements, so that the wireless link recovery can be better and quickly realized.
  • the second target configuration information is used to transmit and schedule the PDCCH for transmission on the corresponding cell.
  • the second target configuration information may also be used to transmit and schedule the PDCCH for transmission on the corresponding cell.
  • the configuration information related to the primary cell may be used to transmit and schedule the PDCCH for transmission on the primary cell.
  • the configuration information related to the first secondary cell may be used to transmit and schedule the PDCCH for transmission on the first secondary cell.
  • the configuration information related to the second secondary cell may be used to transmit and schedule the PDCCH for transmission on the second secondary cell.
  • the configuration information associated with the primary cell and the first secondary cell can be used to transmit and schedule the primary cell and the first secondary cell. PDCCH.
  • At least one of the CORESET of the corresponding cell and the search space of the corresponding cell may be referred to as the control-related resource of the corresponding cell, and the control-related resource of the corresponding cell may be dedicated to recovering the radio of the first cell.
  • the link resource may also be the resource used to transmit and schedule the PDCCH transmitted on the corresponding cell.
  • the second target configuration information is used to transmit and schedule the PDCCH transmitted on the corresponding cell, and the second configuration information can be used to restore the radio link of the first cell, and can also be used for other scheduling. Increase the utilization of the second target configuration information.
  • the target event is BF
  • the primary cell is Pcell
  • the first secondary cell is Scheduling Scell
  • the second secondary cell is PUCCH Scell
  • BFR SS is the search space dedicated to BFR
  • BFR CORESET is the control resource set dedicated to BFR
  • BFR RACH is a random access channel dedicated to BFR.
  • the BFR RACH resources are configured on the Pcell, and the BFR SS and BFR CORESET resources are not configured on the Pcell
  • the UE When BF occurs in the Pcell, the UE sends a BFR request to the network device through the BFR RACH on the Pcell.
  • the network device sends a C-RNTI PDCCH (that is, a BFR response) in a public search space of the Pcell.
  • a C-RNTI PDCCH that is, a BFR response
  • the common search space may be at least one of type0/0A/1/2/3CSS.
  • BFR RACH resources are configured on Pcell
  • BFR SS and BFR CORESET resources are configured on Scheduling Scell
  • the network device configures at least one of BFR SS and BFR CORESET for Pcell BFR for Scheduling Scell.
  • the UE When BF occurs in the Pcell, the UE sends a BFR request to the network device through the BFR RACH on the Pcell.
  • the network device sends the C-RNTI PDCCH on the Scheduling Scell, which specifically includes at least one of the following:
  • the BFR CORESET is associated and only associated with the BFR SS (that is, the at least one SS is the BFR SS).
  • the UE When the UE receives the C-RNTI PDCCH, it considers that the Pcell BFR process has ended successfully, including at least one of the following:
  • the C-RNTI PDCCH is received in the BFR SS associated with the BFR CORESET (that is, the at least one SS is the BFR SS), it is considered that the Pcell BFR process ends successfully.
  • the network device configures Scheduling Scell with BFR RACH for PCell BFR, and configures Scheduling Scell with at least one of BFR SS and BFR CORESET for PCell BFR.
  • the UE When BF occurs in the Pcell, the UE sends a BFR request to the network device through BFR and RACH on the Scheduling Scell.
  • the network equipment sends C-RNTI PDCCH on Scheduling Scell, including at least one of the following:
  • BFR CORESET is associated and only BFR SS is associated.
  • the UE When the UE receives the C-RNTI PDCCH, it considers that the Pcell BFR process has ended successfully, including at least one of the following:
  • the C-RNTI PDCCH is received in the BFR SS associated with the BFR CORESET (that is, at least one SS is the BFR SS), it is considered that the Pcell BFR process is successfully completed.
  • Example 2 BFR based on MAC CE
  • Solution 4 Introduce dedicated SR and MAC CE, or reuse Scell BFR SR and Scell BFR MAC CE in Rel-16 for Pcell BFR
  • the network device configures one or more SR resources for Pcell BFR.
  • the network device configures an SR resource ID for the UE, and the SR resource corresponding to the ID can be used in the PCell BFR process.
  • At least one of Pcell, Scheduling Scell, PUCCH Scell is configured to include the above-mentioned SR resource used for Pcell BFR.
  • the aforementioned SR resource is an SR resource dedicated to Pcell BFR (referred to as Pcell BFR SR), or an SR resource dedicated to Pcell and Scheduling Scell BFR.
  • the above SR is an SR resource used for the BFR of any secondary cell (referred to as Scell for short).
  • Scell any secondary cell
  • the SR is Scell BFR SR. In the embodiment of the present invention, it can be used in Scheduling Scell BFR or Pcell BFR.
  • BF occurs in the Pcell, (a) if the UE has uplink resources, the UE sends a BFR request to the network device through BFR MAC CE on the uplink resource; (b) otherwise (if the UE does not have uplink resources), the UE Send SR to the network device for the BFR process.
  • the network device can know that BF has occurred in the Pcell after receiving the SR, and thus send the UL grant on other serving cells other than the Pcell. Then, The UE sends a BFR request to the network device through the BFR MAC CE on the uplink resources allocated by the UL grant.
  • the network equipment can know that BF has occurred in one or some cells (but it is not clear which cell or cells have BF).
  • the network equipment is in addition to Pcell and Scheduling Scell.
  • the UL grant is sent on other Serving cells, and then the UE sends a BFR request to the network device through the BFR MAC CE on the uplink resources allocated by the UL grant.
  • the above UL grant is transmitted on Scheduling Scell.
  • the aforementioned BFR MAC CE (dedicated MAC CE or Scell BFR MAC CE) is associated with the Pcell.
  • the BFR MAC CE carries a Pcell index, or the BFR MAC CE carries a special value (the special value is used to indicate the Pcell).
  • the BFR MAC CE carries the Scheduling Scell index.
  • the MAC CE may carry at least one of candidate beam index and indication information indicating that the UE detects candidate beam; In the case that there is no candidate beam, the MAC CE may carry indication information indicating that the UE does not detect the candidate beam.
  • the network equipment After receiving the above BFR MAC CE, the network equipment can know that BF has occurred and send C-RNTI PDCCH.
  • the network device configures one or more SR resources for Pcell BFR.
  • the network device configures an SR resource ID for the UE, and the SR resource corresponding to the ID can be used in the PCell BFR process.
  • At least one of Pcell, Scheduling Scell, PUCCH Scell is configured to include the above-mentioned SR resource used for Pcell BFR.
  • the aforementioned SR resource is an SR resource dedicated to Pcell BFR (referred to as Pcell BFR SR), or an SR resource dedicated to Pcell and Scheduling Scell BFR.
  • each SR resource in at least one of the foregoing SR resources is associated with at least one candidate beam (RS).
  • At least one of the aforementioned SR resources indicates that the UE has not detected a candidate beam (RS) or is not associated with a candidate beam (RS).
  • the UE When BF occurs in the Pcell, the UE sends a BFR request to the network device through the SR.
  • the UE selects at least one candidate beam (RS), and then sends a BFR request to the network device through the SR corresponding to the at least one candidate beam (RS).
  • the UE evaluates candidates beam SSB1 and SSB2, where the evaluation result of SSB1 meets the threshold, and the UE sends a BFR request to the network device through the SR corresponding to SSB1.
  • At least one SR resource indicates that the UE has not detected a candidate beam (RS) or is not associated with a candidate beam (RS).
  • the BFR request is sent to the network device through the SR.
  • the network equipment After receiving the above SR, the network equipment can know that BF has occurred in the Pcell, and send the C-RNTI PDCCH.
  • BFR RACH is configured on Scheduling Scell
  • BFR SS and BFR CORESET resources are configured on Pcell (or Scheduling Scell)
  • the network device configures Scheduling Scell with BFR RACH for Scheduling Scell BFR, and configures at least one of BFR SS and BFR CORESET for Scheduling Scell BFR for Pcell (or Scheduling Scell).
  • the UE When BF occurs in the Scheduling Scell, the UE sends a BFR request to the network device through the BFR RACH on the Scheduling Scell.
  • the network device sends the C-RNTI PDCCH on the Pcell (or Scheduling Scell), which specifically includes at least one of the following:
  • the BFR CORESET is associated and only associated with the BFR SS (that is, the at least one SS is the BFR SS).
  • the UE When the UE receives the C-RNTI PDCCH, it considers that the Scheduling Scell BFR process has ended successfully, including at least one of the following:
  • the C-RNTI PDCCH is received in the BFR SS associated with the BFR CORESET (that is, the at least one SS is the BFR SS), it is considered that the Scheduling Scell BFR process is successfully completed.
  • Solution 7 Introduce dedicated SR and MAC CE, or reuse Rel-16 Scell BFR SR and Scell BFR MAC CE for Scheduling Scell BFR
  • the network device configures one or more SR resources for Scheduling Scell BFR.
  • the network device configures an SR resource ID for the UE, and the SR resource corresponding to the ID can be used in the Scheduling Scell BFR process.
  • At least one of Pcell, Scheduling Scell, PUCCH Scell is configured to include the above-mentioned SR resource used for Scheduling Scell BFR.
  • the aforementioned SR is an SR resource dedicated to Scheduling Scell BFR (referred to as Scheduling Scell BFR SR for short), or an SR resource dedicated to Pcell and Scheduling Scell BFR.
  • the above SR is an SR resource used for serving cell BFR.
  • the SR is Scell BFR SR. In the embodiment of the present invention, it can be used in Scheduling Scell BFR or Pcell BFR.
  • the network device receives the SR and knows that BF has occurred in the Scheduling Scell, and thus sends UL grant on other serving cells other than the Scheduling Scell. Then, the UE sends a BFR request to the network device through the BFR MAC CE on the uplink resources allocated by the UL grant.
  • the network device can know that BF has occurred in one or some cells (but it is not clear which cell or cells have BF).
  • the network device is in addition to Pcell and Scheduling Scell.
  • the UL grant is sent on other Serving cells, and then the UE sends a BFR request to the network device through the BFR MAC CE on the uplink resources allocated by the UL grant.
  • the above UL grant is transmitted on the Pcell.
  • the aforementioned BFR MAC CE (dedicated MAC CE or Scell BFR MAC CE) is associated with Scheduling Scell.
  • the BFR MAC CE carries the Scheduling Scell index, or the BFR MAC CE carries a special value (the special value is used to indicate the Scheduling Scell).
  • the BFR MAC CE carries the Pcell index.
  • the MAC CE can carry at least one of candidate beam index and indication information indicating that the UE detects the candidate beam ; In the case that there is no candidate beam, the MAC CE may carry indication information indicating that the UE does not detect the candidate beam.
  • the network equipment After receiving the aforementioned Scheduling Scell MAC CE, the network equipment can know that BF has occurred, and send C-RNTI PDCCH.
  • the network device configures one or more SR resources for Scheduling Scell BFR.
  • the network device configures an SR resource ID for the UE, and the SR resource corresponding to the ID can be used in the Scheduling Scell BFR process.
  • the configuration includes the SR resource used for Scheduling Scell BFR described above.
  • the aforementioned SR resources are SR resources dedicated to Scheduling Scell BFR (Scheduling Scell BFR SR for short), or SR resources dedicated to Pcell and Scheduling Scell BFR.
  • each SR resource in at least one of the foregoing SR resources is associated with at least one candidate beam (RS).
  • At least one of the aforementioned SR resources indicates that the UE has not detected a candidate beam (RS) or is not associated with a candidate beam (RS).
  • the UE sends a BFR request to the network device through the SR.
  • the UE selects at least one candidate beam (RS), and then sends a BFR request to the network device through the SR corresponding to the at least one candidate beam (RS).
  • the UE evaluates candidates beam SSB1 and SSB2, where the evaluation result of SSB1 meets the threshold, and the UE sends a BFR request to the network device through the SR corresponding to SSB1.
  • At least one SR resource indicates that the UE has not detected a candidate beam (RS) or is not associated with a candidate beam (RS).
  • the BFR request is sent to the network device through the SR.
  • the network equipment After receiving the above SR, the network equipment can know that BF has occurred in the Scheduling Scell, and send the C-RNTI PDCCH.
  • the network device configures the Pcell with BFR RACH for Pcell and Scheduling Scell BFR, and configures at least one of BFR SS and BFR CORESET for Pcell and Scheduling Scell BFR for Pcell.
  • the UE When BF occurs in Pcell and Scheduling Scell, the UE sends a BFR request to the network device through BFR RACH on the Pcell scell.
  • the network device sends the C-RNTI PDCCH in the BFR SS on the Pcell scell.
  • the network device configures Scheduling Scell with BFR RACH for Pcell and Scheduling Scell BFR, and configures Scheduling Scell with at least one of BFR SS and BFR CORESET for Pcell and Scheduling Scell BFR.
  • the UE When BF occurs between Pcell and Scheduling Scell, the UE sends a BFR request to the network device through BFR RACH on the Scheduling Scell.
  • the network equipment sends the C-RNTI PDCCH in the BFR SS on the Scheduling Scell.
  • Solution 11 Introduce dedicated SR and MAC CE, or reuse Rel-16 Scell BFR SR and Scell BFR MAC CE for Pcell and Scheduling Scell BFR
  • the network device configures one or more SR resources for Pcell and Scheduling Scell BFR.
  • the network device configures an SR resource ID for the UE, and the SR resource corresponding to the ID can be used for the PCell and Scheduling Scell BFR processes.
  • At least one of Pcell, Scheduling Scell, PUCCH Scell is configured to include the aforementioned SR resources for Pcell and Scheduling Scell BFR.
  • the network device can know that BF has occurred between Pcell and Scheduling Scell after receiving the SR, so that it is outside of Pcell and Scheduling Scell
  • the other serving cells send a UL grant, and then the UE sends a BFR request to the network device through the BFR MAC CE on the uplink resources allocated by the UL grant.
  • the network equipment can know that BF has occurred in one or some cells after receiving the SR (but it is not clear which cell or cells have BF).
  • the network equipment is in addition to Pcell and Scheduling Scell.
  • the UL grant is sent on other Serving cells, and then the UE sends a BFR request to the network device through the BFR MAC CE on the uplink resources allocated by the UL grant.
  • the aforementioned BFR MAC CE (dedicated MAC CE or Scell BFR MAC CE) is associated with Pcell and Scheduling Scell.
  • the MAC CE carries a special value, and the special value corresponds to Pcell and Scheduling Scell.
  • the MAC CE carries the cell index of Pcell and Scheduling Scell.
  • the MAC CE can carry at least one of the candidate beam index and the indication information indicating that the UE has detected the candidate beam.
  • the MAC CE may carry indication information indicating that the UE does not detect the candidate beam.
  • the network equipment After receiving the above MAC CE, the network equipment can know that BF has occurred, and send the C-RNTI PDCCH.
  • the network device configures one or more SR resources for Pcell and Scheduling Scell BFR.
  • the network device configures an SR resource ID for the UE, and the SR resource corresponding to the ID can be used for the PCell and Scheduling Scell BFR processes.
  • At least one of Pcell, Scheduling Scell, PUCCH Scell is configured to include the aforementioned SR resources for Pcell and Scheduling Scell BFR.
  • the aforementioned SR is an SR resource dedicated to Pcell and scheduling Scell BFR.
  • each SR resource in at least one of the foregoing SR resources is associated with at least one candidate beam (RS).
  • At least one of the aforementioned SR resources indicates that the UE has not detected a candidate beam (RS) or is not associated with a candidate beam (RS).
  • the UE sends a BFR request to the network device through the SR.
  • the UE selects at least one candidate beam (RS), and then sends a BFR request to the network device through the SR corresponding to the at least one candidate beam (RS).
  • the UE evaluates candidates beam SSB1 and SSB2, where the evaluation result of SSB1 meets the threshold, the UE sends the SR corresponding to SSB1, and sends a BFR request to the network device.
  • At least one SR resource indicates that the UE has not detected a candidate beam (RS) or is not associated with a candidate beam (RS).
  • the BFR request is sent to the network device through the SR.
  • the network equipment After receiving the above SR, the network equipment can know that BF has occurred in the Pcell and Scheduling Scell, and send the C-RNTI PDCCH.
  • each step in the foregoing example 1 to example 9 is optional, and can be specifically determined according to actual conditions, which is not limited in the embodiment of the present invention.
  • the wireless link recovery method provided in the embodiment of the present invention may further include the following step 213.
  • Step 213 The UE obtains target detection resources.
  • the target detection resource when the target event is BF, the target detection resource is used for evaluating or measuring beams, and when the target event is RLF, the target detection resource is used for evaluating or measuring wireless links.
  • the UE after the UE obtains the target detection resource, it can perform detection based on the target detection resource, and determine whether to send the indication information for indicating the target event to the higher layer according to the detection result.
  • the target detection resources may be determined by the UE itself, or pre-configured by the network equipment for the UE, or specified by the protocol, or other feasibility conditions, which may be specifically based on The actual use requirements are determined, which is not limited in the embodiment of the present invention.
  • the radio link recovery method provided in the embodiment of the present invention may further include the following step 214; the above step 213 may be specifically The following step 213a is implemented.
  • Step 214 The network device sends target detection resources to the UE.
  • Step 213a The UE receives target detection resources from the network equipment.
  • the wireless link recovery method provided in the embodiment of the present invention may further include the following step 215.
  • Step 215 When the UE's measurement result of the target detection resource meets the target condition, the physical layer of the UE sends target indication information to the higher layer of the UE.
  • the target indication information is used to indicate the target event; when the target event is BF, the target detection resource is used for evaluating or measuring beams, and when the target event is RLF, the target detection resource is used for Evaluate or measure wireless links.
  • the UE when the target event is BF, after the UE obtains the target detection resource, it evaluates (or measures) the quality or intensity of the beam of the first cell according to the target detection resource, and then displays the measurement result When the target condition is met, the physical layer of the UE sends target indication information indicating the target event to the higher layer of the UE.
  • the UE when the target event is RLF, after the UE obtains the target detection resource, it evaluates (or measures) the quality or strength of the radio link of the first cell according to the target detection resource, and then When the measurement result meets the target condition, the physical layer of the UE sends target indication information indicating the target event to the higher layer of the UE.
  • the UE determines whether to send the target indication information for indicating the target event to the higher layer according to the measurement result of the target detection resource, and then the higher layer of the UE can judge according to the target indication information whether the UE has a target event in the first cell, thereby The wireless link can be restored in time.
  • the target detection resource includes at least one of the following: a first detection resource configured for the primary cell, and a second detection resource configured for the first secondary cell.
  • the first detection resource may include at least one detection resource
  • the second detection resource may also include at least one detection resource, which is specifically determined according to actual usage requirements, which is not limited in the embodiment of the present invention.
  • the target detection resource can be the first detection resource configured for the primary cell, or the second detection resource configured for the first secondary cell, or it can be configured for the primary cell.
  • the target detection resource may also be other feasible resources, which is not limited in the embodiment of the present invention.
  • the target detection resource is the first detection resource configured for the primary cell and the second detection resource configured for the first secondary cell
  • the first detection resource can be jointly detected or evaluated.
  • the second detection resource the first detection resource can also be detected or evaluated separately, or the second detection resource can be detected or evaluated separately, which can be specifically determined according to actual usage requirements, which is not limited in the embodiment of the present invention.
  • the target condition includes at least one of the following: when the target detection resource includes the first detection resource, the measurement results of X resources in the first detection resource are greater than or equal to the second detection resource. Threshold; in the case that the target detection resource includes the second detection resource, the measurement results of Y resources in the second detection resource are greater than or equal to the third threshold; where the target detection resource includes the first detection resource and the second detection resource In the case of, the measurement results of the Z resources in the first detection resource and the second detection resource are greater than or equal to the corresponding threshold; X, Y, and Z are all positive integers.
  • the target condition is the measurement result of X resources in the first detection resource. Greater than or equal to the second threshold.
  • the target condition is that the measurement results of Y resources in the second detection resource are greater than or equal to the third threshold.
  • the target condition is the measurement of X resources in the first detection resource
  • the result is greater than or equal to the second threshold
  • the measurement results of Y resources in the second detection resource are greater than or equal to the third threshold
  • the target condition is the measurement results of Z resources in the first detection resource and the second detection resource Greater than or equal to the corresponding threshold.
  • the corresponding threshold is the threshold corresponding to the first resource (for example, the above-mentioned second threshold)
  • the corresponding threshold is the threshold corresponding to the second resource (For example, the above-mentioned third threshold).
  • the X resources in the first detection resource include: part or all of the resources in the first detection resource.
  • the Y resources in the second detection resource include: part or all of the resources in the second detection resource.
  • the Z resources in the first detection resource and the second detection resource include some or all of the first detection resource and the second detection resource (specifically, some of the Z resources may belong to the first detection resource, and the other A part belongs to the second detection resource; it is also possible that all of the Z resources belong to the first detection resource; or all of the Z resources belong to the second detection resource).
  • the second threshold and the third threshold may be the same or different, which is not limited in the embodiment of the present invention.
  • the values of the second threshold and the third threshold may be determined according to actual usage requirements, which are not limited in the embodiment of the present invention.
  • the required target detection resources and target conditions can be determined according to actual usage requirements, so that more Realize wireless link recovery quickly and well.
  • the sending period of the target indication information is: the detection period of the first detection resource and the second detection resource The minimum value in the detection period.
  • the target detection resource when the target detection resource includes the first detection resource and the second detection resource, if the detection period of the first detection resource is less than or equal to the detection period of the second detection resource, the target indicates The transmission period of the information is the detection period of the first detection resource; if the detection period of the first detection resource is greater than the detection period of the second detection resource, the transmission period of the target indication information is the detection period of the second detection resource.
  • two synchronization signal blocks (Synchronization Signal and PBCH block, SSB) are configured on the Pcell to detect BF
  • two channel state information reference signals (Channel State Information Reference Signal, CSI-) are configured on the Scheduling Scell.
  • RS is used to detect BF, and the minimum of the periods of these 2 SSBs and 2 CSI-RS is the period indicated by the reported BF.
  • the wireless link recovery method provided in the embodiment of the present invention may further include the following step 216.
  • Step 216 When the number of times the UE sends the target indication information to the higher layer within a preset time period is greater than or equal to a fourth threshold, it is determined that a target event occurs in the first cell.
  • the UE can determine that a target event occurs in the first cell when the number of times the UE sends target indication information to the higher layer reaches a preset threshold within a certain period of time.
  • the fourth threshold may be determined according to actual use requirements, which is not limited in the embodiment of the present invention.
  • the target event is BF
  • the target detection resource is the first detection resource and/or the second detection resource (wherein, the first detection resource and the second detection resource are both BF detection resources, and the first detection resource is configured on the Pcell.
  • Q failure Detection Resources the second detection resource is P failure Detection Resources configured on Scheduling Scell
  • the primary cell is Pcell
  • the first secondary cell is Scheduling Scell
  • the target indication information is BF indication as an example for illustration .
  • the physical layer of the UE sends a BF indication to the higher layer; further optionally, when the physical layer of the UE sends to the higher layer.
  • the UE determines that BF has occurred.
  • the physical layer of the UE sends the BF indication of the Pcell to the higher layer; after sending the BF indication of the Pcell S times within the preset time period, the UE determines that the Pcell has a BF indication .
  • the physical layer of the UE sends a Scheduling Scell BF indicator to the higher layer; when the BF indicator of Scheduling Scell is sent S times within the preset time period, the UE determines Scheduling Scell BF occurs.
  • the physical layer of the UE sends Pcell and Scheduling Scell BF indications to the higher layer; when the Pcell and Scheduling Scell are sent S times within the preset time period After the BF indication, the UE determines that BF occurs in the Pcell and Scheduling Scell.
  • the physical layer of the UE sends a BF indication to the higher layer; Further optionally, when the number of times that the physical layer of the UE sends BF indications to the higher layer is greater than or equal to a fourth threshold, the UE determines that BF occurs.
  • the UE If the target detection resource is the first detection resource, and the first detection resource is used to evaluate (or measure) the beam of the Pcell, when the measurement results (or evaluation quality) of Q failure Detection Resources are all lower than the second threshold, the UE’s
  • the physical layer sends the BF indication of the Pcell to the higher layer; after sending the BF indication of the Pcell S times within the preset time period, the UE determines that the Pcell has a BF indication.
  • the UE If the target detection resource is the first detection resource, and the first detection resource is used to evaluate (or measure) the beam of the Scheduling Scell, when the measurement results (or evaluation quality) of Q failure Detection Resources are all lower than the second threshold, the UE The physical layer sends the BF indication of the Scheduling Scell to the higher layer; after sending the BF indication of the Scheduling Scell S times within the preset time period, the UE determines that the BF of the Scheduling Scell occurs.
  • the target detection resource is the first detection resource, and the first detection resource is used to evaluate (or measure) the beams of Pcell and Scheduling Scell, when the measurement results (or evaluation quality) of Q failure Detection Resources are all lower than the second threshold .
  • the physical layer of the UE sends the BF indications of Pcell and Scheduling Scell to the higher layer; after sending the BF indications of Pcell and Scheduling Scell S times within the preset time period, the UE determines that Pcell and Scheduling Scell have BF.
  • the UE If the target detection resource is the second detection resource, and the second detection resource is used to evaluate (or measure) the beam of the Pcell, when the measurement results (or evaluation quality) of P failure Detection Resources are all lower than the third threshold, the UE’s The physical layer sends the BF indication of the Pcell to the higher layer; after sending the BF indication of the Pcell S times within the preset time period, the UE determines that the Pcell has a BF indication.
  • the UE If the target detection resource is the second detection resource, and the second detection resource is used to evaluate (or measure) the beam of the Scheduling Scell, when the measurement results (or evaluation quality) of P failure Detection Resources are all lower than the third threshold, the UE The physical layer sends the BF indication of the Scheduling Scell to the higher layer; after sending the BF indication of the Scheduling Scell S times within the preset time period, the UE determines that the BF of the Scheduling Scell occurs.
  • the target detection resource is the second detection resource, and the second detection resource is used to evaluate (or measure) the beams of Pcell and Scheduling Scell, when the measurement results (or evaluation quality) of P failure Detection Resources are all lower than the third threshold .
  • the physical layer of the UE sends the BF indications of Pcell and Scheduling Scell to the higher layer; after sending the BF indications of Pcell and Scheduling Scell S times within the preset time period, the UE determines that Pcell and Scheduling Scell have BF.
  • the embodiment of the present invention provides a method for recovering a radio link. If a target event (BF or RLF) on the second cell of the UE (including at least one of the following: the primary cell, the first secondary cell, and the second secondary cell (the secondary cell of the UE except the first secondary cell)) , Send the wireless link recovery request of the first cell to the network device.
  • a target event BF or RLF
  • the radio link recovery request of the first cell can be sent to the network device on the second cell (the network device can then send the radio link recovery request of the first cell after receiving the radio link recovery request of the first cell).
  • the target event occurred in the first cell, and then the radio link recovery of the first cell can be further triggered), so that when the secondary cell schedules the primary cell, if the primary cell occurs BF or RLF, or the secondary cell occurs BF Or RLF, which can quickly realize wireless link recovery.
  • an embodiment of the present invention provides a UE.
  • the UE 300 includes: the UE 300 includes: a sending module 301, wherein the sending module 301 is configured to: if a target event occurs in the first cell of the UE 300, the UE 300 In the second cell, the radio link recovery request of the first cell is sent to the network device; wherein the first cell includes at least one of the following: a primary cell, a first secondary cell; and the second cell includes at least one of the following : The primary cell, the first secondary cell, and the second secondary cell; the first secondary cell is the secondary cell that schedules the primary cell; the second secondary cell is the secondary cell of the UE 300 except for the first secondary cell The secondary cell; the above target event is BF or RLF.
  • the sending module 301 is specifically configured to: in the second cell, send the radio link recovery request of the first cell to the network device through a first bearer; wherein, the first bearer includes at least one of the following : Target RACH, target scheduling request, target MAC CE.
  • the target scheduling request is at least one of N scheduling requests for restoring the radio link of the first cell, and N is a positive integer.
  • each of the M scheduling requests in the above N scheduling requests is associated with a candidate beam reference signal, and M is a positive integer less than or equal to N.
  • the foregoing target scheduling request is determined based on a measurement result of candidate beam reference signals associated with each of the foregoing M scheduling requests.
  • the aforementioned target scheduling request is a scheduling request corresponding to the first candidate beam reference signal; wherein, the aforementioned first candidate beam reference signal is a candidate beam reference signal that meets a predetermined condition.
  • the foregoing predetermined condition includes any one of the following: the foregoing first candidate beam reference signal is a candidate beam reference signal whose measurement result is greater than or equal to a first threshold among the candidate beam reference signals associated with the foregoing M scheduling requests; A candidate beam reference signal is at least one of the candidate beam reference signals associated with the M scheduling requests with the smallest index of the corresponding candidate beam; the first candidate beam reference signal is among the candidate beam reference signals associated with the M scheduling requests , The corresponding candidate beam has at least one with the largest index; the first candidate beam reference signal is the candidate beam reference signal associated with the M scheduling requests, the index of the corresponding candidate beam is closest to the index of the beam of the first cell at least one.
  • the aforementioned target scheduling request is a scheduling request that is not associated with candidate beam reference signals; or, the aforementioned target scheduling request is a scheduling request that the UE 300 does not detect the associated candidate beam reference signals.
  • the foregoing sending module 301 is specifically configured to: in the case where the foregoing first carrier includes the foregoing target MAC CE, if a first uplink resource exists in the foregoing second cell, pass the target on the foregoing first uplink resource.
  • the MAC CE sends a radio link recovery request of the first cell to the network device.
  • the target MAC CE carries at least one of the following: the index of the target candidate beam, the first indication information; the first indication information is used to indicate whether the UE 300 detects the above Target candidate beam; or, if the UE 300 does not detect the target candidate beam, the target MAC CE carries second indication information; the second indication information is used to indicate that the UE 300 does not detect the target candidate beam.
  • the sending module 301 is further configured to send a first scheduling request to the network device when the first carrier includes the target MAC CE.
  • the foregoing first scheduling request satisfies any one of the following: a scheduling request for restoring a radio link of the foregoing first cell, and a scheduling request for restoring a radio link of any secondary cell.
  • At least one of the foregoing first scheduling request and the foregoing target MAC CE carries at least one of the following: the index of the foregoing target candidate beam, first indication information; the foregoing first indication The information is used to indicate whether the UE 300 detects the target candidate beam; or, if the UE 300 does not detect the target candidate beam, at least one of the first scheduling request and the target MAC CE carries second indication information; The second indication information is used to indicate that the UE 300 does not detect the aforementioned target candidate beam.
  • the above-mentioned target MAC CE satisfies at least one of the following: it is used to restore the radio link of the above-mentioned first cell and carries a target identifier; wherein the above-mentioned target identifier is used to indicate the above-mentioned first cell.
  • the aforementioned UE 300 further includes: an acquiring module 302, wherein: the acquiring module 302 is configured to acquire first target configuration information; wherein, the aforementioned first target configuration information is used to restore the radio link of the aforementioned first cell.
  • the sending module 301 is specifically configured to: send the radio link recovery request of the first cell to the network device on the second cell according to the first target configuration information.
  • the first target configuration information includes at least one of the following: configuration information related to the primary cell, configuration information related to the first secondary cell, and configuration information related to the combination of the primary cell and the first secondary cell.
  • each configuration information in the first target configuration information includes at least one of the following: the RACH of the corresponding cell, and the scheduling request of the corresponding cell.
  • the aforementioned UE 300 further includes: a receiving module 303, wherein: the receiving module 303 is configured to receive the radio link recovery response of the first cell from the network device on the third cell; the third cell is the aforementioned At least one of the second cells.
  • the above-mentioned radio link recovery response of the first cell is carried on the PDCCH scrambled by the target RNTI.
  • the target RNTI is a C-RNTI or an RNTI used to restore the radio link of the first cell.
  • the radio link recovery response of the first cell is a random access response message RAR.
  • the receiving module 303 is specifically configured to: on the first resource of the third cell, receive the radio link recovery response of the first cell from the network device; wherein the first resource includes at least one of the following Item: target CORESET, target search space, the target common search space when the third cell includes the primary cell.
  • the target CORESET is the CORESET used to restore the radio link of the first cell; and/or, when the first resource includes the target search space
  • the above-mentioned target search space is a search space for restoring the wireless link of the first cell.
  • the aforementioned receiving module 303 is specifically configured to receive the radio link recovery response of the first cell from the aforementioned network device on at least one search space associated with the aforementioned target CORESET.
  • the aforementioned at least one search space is the aforementioned target search space.
  • the aforementioned acquiring module 302 is further configured to acquire second target configuration information; wherein, the aforementioned second target configuration information is used to restore the radio link of the aforementioned first cell.
  • the aforementioned receiving module 303 is specifically configured to: according to the aforementioned second target configuration information, on the aforementioned third cell, receive a radio link recovery response of the first cell from the network device.
  • the second target configuration information includes at least one of the following: configuration information related to the primary cell, configuration information related to the first secondary cell, and configuration information related to the combination of the primary cell and the first secondary cell.
  • each configuration information in the second target configuration information includes at least one of the following: the CORESET of the corresponding cell, and the search space of the corresponding cell.
  • the foregoing second target configuration information is used to transmit and schedule the PDCCH for transmission on the foregoing corresponding cell.
  • the foregoing sending module 301 is further configured to: in the case where the measurement result of the target detection resource meets the target condition, the physical layer of the UE 300 sends target indication information to the higher layer of the UE 300; wherein, the target indication information is used for Indicates the target event mentioned above.
  • the target detection resource includes at least one of the following: a first detection resource configured for the primary cell, and a second detection resource configured for the first secondary cell.
  • the above-mentioned target condition includes a first condition or a second condition; wherein, the above-mentioned first condition includes at least one of the following: when the above-mentioned target detection resource includes the above-mentioned first detection resource, The measurement results of the X resources are greater than or equal to the second threshold; in the case where the target detection resources include the second detection resources, the measurement results of the Y resources in the second detection resources are greater than or equal to the third threshold;
  • the second condition is: when the target detection resource includes the first detection resource and the second detection resource, the measurement results of Z resources in the first detection resource and the second detection resource are greater than or equal to a corresponding threshold; X, Y, and Z are all positive integers.
  • the sending period of the target indication information is: the detection period of the first detection resource and the detection of the second detection resource The minimum value in the period.
  • the modules that must be included in the UE 300 are indicated by a solid line frame, such as the sending module 301; the modules that may or may not be included in the UE 300 are indicated by a dashed frame, such as the acquisition module 302 and Receiving module 303.
  • the UE provided in the embodiment of the present invention can implement the various processes shown in the foregoing embodiment, and in order to avoid repetition, details are not described herein again.
  • a target event (BF or RLF) occurs in the first cell of the UE (including at least one of the following: the primary cell, the first secondary cell (the secondary cell that schedules the primary cell)
  • the target event (BF or RLF) occurs in the UE
  • the second cell including at least one of the following: the primary cell, the first secondary cell, and the second secondary cell (a secondary cell in the UE’s secondary cells other than the first secondary cell)
  • sending the first secondary cell to the network device A radio link recovery request for a cell.
  • the radio link recovery request of the first cell can be sent to the network device on the second cell (the network device can then send the radio link recovery request of the first cell after receiving the radio link recovery request of the first cell).
  • the target event occurred in the first cell, and then the radio link recovery of the first cell can be further triggered), so that when the secondary cell schedules the primary cell, if the primary cell occurs BF or RLF, or the secondary cell occurs BF Or RLF, which can quickly realize wireless link recovery.
  • the UE 400 includes but is not limited to: a radio frequency unit 401, a network module 402, an audio output unit 403, an input unit 404, a sensor 405, a display unit 406, User input unit 407, interface unit 408, memory 409, processor 410, power supply 411 and other components.
  • a radio frequency unit 401 includes but is not limited to: a radio frequency unit 401, a network module 402, an audio output unit 403, an input unit 404, a sensor 405, a display unit 406, User input unit 407, interface unit 408, memory 409, processor 410, power supply 411 and other components.
  • FIG. 5 does not constitute a limitation on the UE.
  • the UE 400 may include more or less components than those shown in the figure, or a combination of certain components, or different components. Layout.
  • the UE 400 includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palmtop computer, a vehicle-mounted UE, a wearable device, and
  • the radio frequency unit 401 is configured to send a radio link recovery request of the first cell to the network device on the second cell of the UE if a target event occurs in the first cell of the UE;
  • the first cell includes at least the following One item: a primary cell, a first secondary cell;
  • the above-mentioned second cell includes at least one of the following: the above-mentioned primary cell, the above-mentioned first secondary cell, and a second secondary cell;
  • the above-mentioned first secondary cell is a secondary cell that schedules the above-mentioned primary cell;
  • the above-mentioned second secondary cell is a secondary cell other than the above-mentioned first secondary cell among the secondary cells of the UE;
  • the above-mentioned target event is BF or RLF.
  • a target event (BF or RLF) occurs in the first cell of the UE (including at least one of the following: the primary cell, the first secondary cell (the secondary cell that schedules the primary cell)
  • the target event (BF or RLF) occurs in the UE
  • the second cell including at least one of the following: the primary cell, the first secondary cell, and the second secondary cell (a secondary cell in the UE’s secondary cells other than the first secondary cell)
  • sending the first secondary cell to the network device A radio link recovery request for a cell.
  • the radio link recovery request of the first cell can be sent to the network device on the second cell (the network device can then send the radio link recovery request of the first cell after receiving the radio link recovery request of the first cell).
  • the target event occurred in the first cell, and then the radio link recovery of the first cell can be further triggered), so that when the secondary cell schedules the primary cell, if the primary cell occurs BF or RLF, or the secondary cell occurs BF Or RLF, which can quickly realize wireless link recovery.
  • the radio frequency unit 401 can be used to receive and send signals during information transmission or communication. Specifically, the downlink data from the base station is received and processed by the processor 410; in addition, Uplink data is sent to the base station.
  • the radio frequency unit 401 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.
  • the radio frequency unit 401 can also communicate with the network and other devices through a wireless communication system.
  • the UE 400 provides users with wireless broadband Internet access through the network module 402, such as helping users to send and receive emails, browse web pages, and access streaming media.
  • the audio output unit 403 may convert the audio data received by the radio frequency unit 401 or the network module 402 or stored in the memory 409 into an audio signal and output it as sound. Moreover, the audio output unit 403 may also provide audio output related to a specific function performed by the UE 400 (for example, call signal reception sound, message reception sound, etc.).
  • the audio output unit 403 includes a speaker, a buzzer, a receiver, and the like.
  • the input unit 404 is used to receive audio or video signals.
  • the input unit 404 may include a graphics processing unit (GPU) 4041 and a microphone 4042.
  • the graphics processor 4041 is used to capture images of still pictures or videos obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. Data is processed.
  • the processed image frame can be displayed on the display unit 406.
  • the image frame processed by the graphics processor 4041 may be stored in the memory 409 (or other storage medium) or sent via the radio frequency unit 401 or the network module 402.
  • the microphone 4042 can receive sound, and can process such sound into audio data.
  • the processed audio data can be converted into a format that can be sent to a mobile communication base station via the radio frequency unit 401 in the case of a telephone call mode for output.
  • the UE 400 also includes at least one sensor 405, such as a light sensor, a motion sensor, and other sensors.
  • the light sensor includes an ambient light sensor and a proximity sensor.
  • the ambient light sensor can adjust the brightness of the display panel 4061 according to the brightness of the ambient light.
  • the proximity sensor can turn off the display panel 4061 and/or when the UE 400 moves to the ear. Or backlight.
  • the accelerometer sensor can detect the magnitude of acceleration in various directions (usually three-axis), and can detect the magnitude and direction of gravity when stationary, and can be used to identify UE posture (such as horizontal and vertical screen switching, related games, Magnetometer attitude calibration), vibration recognition related functions (such as pedometer, tap), etc.; sensor 405 can also include fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, infrared Sensors, etc., will not be repeated here.
  • the display unit 406 is used to display information input by the user or information provided to the user.
  • the display unit 406 may include a display panel 4061, and the display panel 4061 may be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), etc.
  • LCD liquid crystal display
  • OLED organic light-emitting diode
  • the user input unit 407 may be used to receive inputted numeric or character information, and generate key signal input related to user settings and function control of the UE 400.
  • the user input unit 407 includes a touch panel 4071 and other input devices 4072.
  • the touch panel 4071 also called a touch screen, can collect the user's touch operations on or near it (for example, the user uses any suitable objects or accessories such as fingers, stylus, etc.) on the touch panel 4071 or near the touch panel 4071. operate).
  • the touch panel 4071 may include two parts: a touch detection device and a touch controller.
  • the touch detection device detects the user's touch position, detects the signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts it into contact coordinates, and then sends it To the processor 410, the command sent by the processor 410 is received and executed.
  • the touch panel 4071 can be implemented in multiple types such as resistive, capacitive, infrared, and surface acoustic wave.
  • the user input unit 407 may also include other input devices 4072.
  • other input devices 4072 may include, but are not limited to, a physical keyboard, function keys (such as volume control buttons, switch buttons, etc.), trackball, mouse, and joystick, which will not be repeated here.
  • the touch panel 4071 can cover the display panel 4061.
  • the touch panel 4071 detects a touch operation on or near it, it transmits it to the processor 410 to determine the type of the touch event, and then the processor 410 determines the type of the touch event according to the touch.
  • the type of event provides corresponding visual output on the display panel 4061.
  • the touch panel 4071 and the display panel 4061 are used as two independent components to implement the input and output functions of the UE 400, in some embodiments, the touch panel 4071 and the display panel 4061 can be integrated
  • the implementation of the input and output functions of the UE 400 is not specifically limited here.
  • the interface unit 408 is an interface for connecting an external device to the UE 400.
  • the external device may include a wired or wireless headset port, an external power source (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device with an identification module, audio input/output (I/O) port, video I/O port, headphone port, etc.
  • the interface unit 408 can be used to receive input from an external device (for example, data information, power, etc.) and transmit the received input to one or more elements in the UE 400 or can be used to communicate between the UE 400 and the external device. Transfer data between.
  • the memory 409 can be used to store software programs and various data.
  • the memory 409 may mainly include a storage program area and a storage data area.
  • the storage program area may store an operating system, an application program required by at least one function (such as a sound playback function, an image playback function, etc.), etc.; Data (such as audio data, phone book, etc.) created by the use of mobile phones, etc.
  • the memory 409 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other volatile solid-state storage devices.
  • the processor 410 is the control center of the UE 400. It uses various interfaces and lines to connect the various parts of the entire UE 400. It runs or executes the software programs and/or modules stored in the memory 409, and calls the data stored in the memory 409. , Execute various functions of the UE 400 and process data, so as to monitor the UE 400 as a whole.
  • the processor 410 may include one or more processing units; optionally, the processor 410 may integrate an application processor and a modem processor, where the application processor mainly processes the operating system, user interface, and application programs.
  • the adjustment processor mainly deals with wireless communication. It can be understood that the foregoing modem processor may not be integrated into the processor 410.
  • the UE 400 may also include a power source 411 (such as a battery) for supplying power to various components.
  • a power source 411 such as a battery
  • the power source 411 may be logically connected to the processor 410 through a power management system, so as to manage charging, discharging, and power consumption management through the power management system. And other functions.
  • the UE 400 includes some functional modules that are not shown, which will not be repeated here.
  • an embodiment of the present invention further provides a UE, including a processor 410 as shown in FIG. 5, a memory 409, a computer program stored in the memory 409 and running on the processor 410, the computer program When executed by the processor 410, each process of the foregoing method embodiment is realized, and the same technical effect can be achieved. To avoid repetition, details are not described herein again.
  • the network device 500 includes: a receiving module 501, wherein: the receiving module 501 is configured to receive the second cell of the UE from the UE on the second cell of the UE.
  • a radio link recovery request of a cell wherein the radio link recovery request of the first cell is used to indicate that a target event occurs in the first cell;
  • the first cell includes at least one of the following: a primary cell, a first secondary cell;
  • the second cell includes at least one of the following: the primary cell, the first secondary cell, and the second secondary cell;
  • the first secondary cell is the secondary cell that schedules the primary cell;
  • the second secondary cell is the secondary cell of the UE A secondary cell other than the above-mentioned first secondary cell; the above-mentioned target event is BF or RLF.
  • the receiving module 501 is specifically configured to: on the second cell, receive the radio link recovery request of the first cell from the UE through a first bearer; wherein the first bearer includes at least one of the following: Target RACH, target scheduling request, target MAC CE.
  • the target scheduling request is at least one of N scheduling requests for restoring the radio link of the first cell, and N is a positive integer.
  • each of the M scheduling requests in the above N scheduling requests is associated with a candidate beam reference signal, and M is a positive integer less than or equal to N.
  • the foregoing target scheduling request is determined based on a measurement result of candidate beam reference signals associated with each of the foregoing M scheduling requests.
  • the aforementioned target scheduling request is a scheduling request corresponding to the first candidate beam reference signal; wherein, the aforementioned first candidate beam reference signal is a candidate beam reference signal that meets a predetermined condition.
  • the foregoing predetermined condition includes any one of the following: the foregoing first candidate beam reference signal is a candidate beam reference signal whose measurement result is greater than or equal to a first threshold among the candidate beam reference signals associated with the foregoing M scheduling requests; A candidate beam reference signal is at least one of the candidate beam reference signals associated with the M scheduling requests with the smallest index of the corresponding candidate beam; the first candidate beam reference signal is among the candidate beam reference signals associated with the M scheduling requests , The corresponding candidate beam has at least one with the largest index; the first candidate beam reference signal is the candidate beam reference signal associated with the M scheduling requests, the index of the corresponding candidate beam is closest to the index of the beam of the first cell at least one.
  • the aforementioned target scheduling request is a scheduling request not associated with candidate beam reference signals; or, the aforementioned target scheduling request is a scheduling request associated with candidate beam reference signals not detected by the UE.
  • the above-mentioned receiving module 501 is specifically configured to: in the case where the above-mentioned first carrier includes the above-mentioned target MAC CE, if the above-mentioned second cell has a first uplink resource, pass the above-mentioned target on the above-mentioned first uplink resource.
  • the MAC CE receives the above-mentioned radio link recovery request of the first cell from the UE.
  • the target MAC CE carries at least one of the following: the index of the target candidate beam, first indication information; the first indication information is used to indicate whether the UE detects the target candidate Beam; or, if the UE does not detect the target candidate beam, the target MAC CE carries second indication information; the second indication information is used to indicate that the UE does not detect the target candidate beam.
  • the receiving module 501 is further configured to receive a first scheduling request from the UE when the first carrier includes the target MAC CE.
  • the foregoing first scheduling request satisfies any one of the following: a scheduling request for restoring a radio link of the foregoing first cell, and a scheduling request for restoring a radio link of any secondary cell.
  • the foregoing first scheduling request and/or the foregoing target MAC CE carries at least one of the following: the index of the foregoing target candidate beam, and the first indication information; the foregoing first indication information is used for Instruct the UE to detect the target candidate beam; or, if the UE does not detect the target candidate beam, the first scheduling request and/or the target MAC CE carry second indication information; the second indication information is used to indicate that the UE does not The above-mentioned target candidate beam is detected.
  • the above-mentioned target MAC CE satisfies at least one of the following: it is used to restore the radio link of the above-mentioned first cell and carries a target identifier; wherein the above-mentioned target identifier is used to indicate the above-mentioned first cell.
  • the foregoing network device further includes: a sending module 502, wherein: the sending module 502 is configured to send first target configuration information to the UE; wherein, the foregoing first target configuration information is used to restore the radio link of the first cell road.
  • the receiving module 501 is specifically configured to: receive the radio link recovery request of the first cell from the UE on the second cell according to the first target configuration information.
  • the first target configuration information includes at least one of the following: configuration information related to the primary cell, configuration information related to the first secondary cell, and configuration information related to the combination of the primary cell and the first secondary cell.
  • each configuration information in the first target configuration information includes at least one of the following: the RACH of the corresponding cell, and the scheduling request of the corresponding cell.
  • the sending module 502 is further configured to send the radio link recovery response of the first cell to the UE on the third cell; the third cell is at least one of the second cells.
  • the above-mentioned radio link recovery response of the first cell is carried on the PDCCH scrambled by the target RNTI.
  • the target RNTI is a C-RNTI or an RNTI used to restore the radio link of the first cell.
  • the radio link recovery response of the first cell is RAR.
  • the sending module 502 is specifically configured to: send the radio link recovery response of the first cell to the UE on the first resource of the third cell; wherein the first resource includes at least one of the following: Target CORESET, target search space, the target common search space when the third cell includes the primary cell.
  • the target CORESET is the CORESET used to restore the radio link of the first cell; and/or, when the first resource includes the target search space
  • the target search space is a search space for restoring the radio link of the first cell.
  • the sending module 502 is specifically configured to send the radio link recovery of the first cell to the UE on at least one search space associated with the target CORESET when the first resource includes the target CORESET response.
  • the aforementioned at least one search space is the aforementioned target search space.
  • the foregoing sending module 502 is further configured to send second target configuration information to the UE; wherein, the foregoing second target configuration information is used to restore the radio link of the first cell.
  • the above-mentioned receiving module 501 is specifically configured to: according to the above-mentioned second target configuration information, on the above-mentioned third cell, send a radio link recovery response of the first cell to the UE.
  • the second target configuration information includes at least one of the following: configuration information related to the primary cell, configuration information related to the first secondary cell, and configuration information related to the combination of the primary cell and the first secondary cell.
  • each configuration information in the second target configuration information includes at least one of the following: the CORESET of the corresponding cell, and the search space of the corresponding cell.
  • the foregoing second target configuration information is used to transmit and schedule the PDCCH for transmission on the foregoing corresponding cell.
  • the foregoing sending module 502 is further configured to: send target detection resources to the UE; wherein, when the foregoing target event is BF, the foregoing target detection resource is used for evaluating or measuring beams, and when the foregoing target event is RLF In this case, the aforementioned target detection resources are used to evaluate or measure wireless links.
  • the target detection resource includes at least one of the following: a first detection resource configured for the primary cell, and a second detection resource configured for the first secondary cell.
  • the modules that must be included in the network device 500 are indicated by solid lines, such as the receiving module 501; the modules that may or may not be included in the network device 500 are indicated by dashed boxes, such as the sending module 502.
  • the network device provided in the embodiment of the present invention may be the above-mentioned network device capable of implementing each process shown in the foregoing method embodiment, and to avoid repetition, details are not described herein again.
  • a target event (BF or RLF) occurs in the first cell of the UE (including at least one of the following: the primary cell, the first secondary cell (the secondary cell for scheduling the primary cell))
  • the UE’s second cell including at least one of the following: the primary cell, the first secondary cell, and the second secondary cell (the UE’s secondary cell except the first secondary cell)
  • send to the network device The radio link recovery request of the first cell when a target event occurs in the first cell, the radio link recovery request of the first cell can be sent to the network device on the second cell (the network device can then send the radio link recovery request of the first cell after receiving the radio link recovery request of the first cell).
  • the target event occurred in the first cell, and then the radio link recovery of the first cell can be further triggered), so that when the secondary cell schedules the primary cell, if the primary cell occurs BF or RLF, or the secondary cell occurs BF Or RLF, which can quickly realize wireless link recovery.
  • FIG 7 is a schematic diagram of the hardware structure of a network device implementing an embodiment of the present invention.
  • the network device 600 is a target network device to which a target cell belongs.
  • the network device 600 includes a processor 601, a transceiver 602, a memory 603, and a user interface. 604 and bus interface 605.
  • the transceiver 602 is configured to receive the radio link recovery request of the first cell of the UE from the UE on the second cell of the UE; wherein, the radio link recovery request of the first cell is used to indicate the first cell A target event occurs;
  • the first cell includes at least one of the following: a primary cell, a first secondary cell;
  • the second cell includes at least one of the following: the primary cell, the first secondary cell, and the second secondary cell;
  • the first The secondary cell is a secondary cell that schedules the primary cell;
  • the second secondary cell is a secondary cell other than the first secondary cell among the secondary cells of the UE;
  • the target event is BF or RLF.
  • a target event (BF or RLF) occurs in the first cell of the UE (including at least one of the following: the primary cell, the first secondary cell (the secondary cell for scheduling the primary cell))
  • the UE’s second cell including at least one of the following: the primary cell, the first secondary cell, and the second secondary cell (the UE’s secondary cell except the first secondary cell)
  • send to the network device The radio link recovery request of the first cell when a target event occurs in the first cell, the radio link recovery request of the first cell can be sent to the network device on the second cell (the network device can then send the radio link recovery request of the first cell after receiving the radio link recovery request of the first cell).
  • the target event occurred in the first cell, and then the radio link recovery of the first cell can be further triggered), so that when the secondary cell schedules the primary cell, if the primary cell occurs BF or RLF, or the secondary cell occurs BF Or RLF, which can quickly realize wireless link recovery.
  • the bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 601 and various circuits of the memory represented by the memory 603 are linked together. .
  • the bus architecture can also link various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are all known in the art, and therefore, will not be further described herein.
  • the bus interface provides the interface.
  • the transceiver 602 may be a plurality of elements, including a transmitter and a receiver, and provide a unit for communicating with various other devices on the transmission medium.
  • the user interface 604 may also be an interface capable of connecting externally and internally with required equipment.
  • the connected equipment includes but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.
  • the processor 601 is responsible for managing the bus architecture and general processing, and the memory 603 can store data used by the processor 601 when performing operations.
  • the network device 600 also includes some functional modules not shown, which will not be repeated here.
  • the embodiment of the present invention also provides a network device, including a processor 601 as shown in FIG. 7, a memory 603, a computer program stored in the memory 603 and running on the processor 601, and the computer program is
  • the processor 601 implements each process of the foregoing method embodiment when executing, and can achieve the same technical effect. To avoid repetition, details are not described herein again.
  • An embodiment of the present invention also provides a communication system, which includes the UE and network equipment as described in the foregoing embodiment.
  • the embodiment of the present invention also provides a computer-readable storage medium, and a computer program is stored on the computer-readable storage medium.
  • the computer program is used by the processor 410 shown in FIG. 5 and/or the processor 601 shown in FIG.
  • Each process of the foregoing method embodiment is implemented during execution, and the same technical effect can be achieved. To avoid repetition, details are not described herein again.
  • the computer-readable storage medium such as read-only memory (Read-Only Memory, ROM for short), random access memory (Random Access Memory, RAM for short), magnetic disks, or optical disks, etc.
  • the technical solution of the present invention essentially or the part that contributes to the existing technology can be embodied in the form of a software product, and the computer software product is stored in a storage medium (such as ROM/RAM, magnetic disk, The optical disc) includes several instructions to enable a terminal device (which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the method described in each embodiment of the present invention.
  • a terminal device which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.

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Abstract

本发明实施例公开了一种无线链路恢复方法及设备，该方法包括：若该UE的第一小区发生目标事件，UE在该UE的第二小区上，向网络设备发送第一小区的无线链路恢复请求；其中，第一小区包括以下至少一项：主小区，第一辅小区；第二小区包括以下至少一项：该主小区，第一辅小区，第二辅小区；第一辅小区为调度该主小区的辅小区；第二辅小区为该UE的辅小区中除第一辅小区之外的辅小区；该目标事件为波束失败BF或无线链路失败RLF。

Description

无线链路恢复方法及设备
相关申请的交叉引用
本申请主张在2020年1月21日在中国提交的中国专利申请号202010072799.0的优先权，其全部内容通过引用包含于此。
技术领域
本发明实施例涉及通信技术领域，尤其涉及一种无线链路恢复方法及设备。
背景技术
当主小区或辅小区发生波束失败(beam failure，BF)或无线链路失败(Radio link Failure，RLF)时，UE会触发无线链路重建流程。
以发生BF为例进行说明，相关技术中，在主小区调度辅小区或主小区自调度或者辅小区自调度的情况下，引入了主小区的波束失败恢复(beam failure recovery，BFR)流程，来实现主小区的波束失败恢复，以及引入了辅小区的波束失败恢复流程，来实现辅小区上的波束失败恢复。无论主小区的波束失败恢复流程，还是辅小区的波束失败恢复流程，都需要由UE先发起恢复请求，网络设备通过PDCCH进行波束失败恢复响应。
对于辅小区的波束失败，基站需要先通过PDCCH调度上行资源用于用户发送BFR MAC CE，然而基站在收到BFR MAC CE之前基站无法确定是哪些辅小区发生了BF。在辅小区调度主小区的情况下，一旦出现了辅小区BF，基站无法判断是否是该调度主小区的辅小区发生了BF从而无法保证在合适的小区调度BFR MAC CE，如果主小区出现了BF，其对应的PDCCH无法正常发送，从而使得主小区或辅小区均无法按照上述主小区调度辅小区或主小区自调度或者辅小区自调度的情况下的波束失败恢复流程进行波束失败恢复。
如此，在辅小区调度主小区的情况下，若主小区发生BF或RLF，或辅小区发生BF或RLF，无法快速实现无线链路恢复。
发明内容
本发明实施例提供一种无线链路恢复方法及设备，以解决在辅小区调度主小区的情况下，若主小区发生BF或RLF，或辅小区发生BF或RLF，无法快速实现无线链路恢复的问题。
为了解决上述技术问题，本发明是这样实现的：
第一方面，本发明实施例提供了一种无线链路恢复方法，该方法包括：若该UE的第一小区发生目标事件，UE在该UE的第二小区上，向网络设备发送第一小区的无线链路恢复请求；其中，第一小区包括以下至少一项：主小区，第一辅小区；第二小区包括以下至少一项：该主小区，第一辅小区，第二辅小区；第一辅小区为调度该主小区的辅小区；第二辅小区为该UE的辅小区中除第一辅小区之外的辅小区；该目标 事件为波束失败BF或无线链路失败RLF。
第二方面，本发明实施例提供了一种无线链路恢复方法，该方法包括：网络设备在UE的第二小区上，从该UE接收该UE的第一小区的无线链路恢复请求；其中，第一小区的无线链路恢复请求用于指示第一小区发生目标事件；第一小区包括以下至少一项：主小区，第一辅小区；第二小区包括以下至少一项：该主小区，第一辅小区，第二辅小区；第一辅小区为调度该主小区的辅小区；第二辅小区为该UE的辅小区中除第一辅小区之外的辅小区；该目标事件为波束失败BF或无线链路失败RLF。
第三方面，本发明实施例提供了一种UE，该UE包括：发送模块；该发送模块，用于若该UE的第一小区发生目标事件，在该UE的第二小区上，向网络设备发送第一小区的无线链路恢复请求；其中，第一小区包括以下至少一项：主小区，第一辅小区；第二小区包括以下至少一项：该主小区，第一辅小区，第二辅小区；第一辅小区为调度该主小区的辅小区；第二辅小区为该UE的辅小区中除第一辅小区之外的辅小区；该目标事件为波束失败BF或无线链路失败RLF。
第四方面，本发明实施例提供了一种网络设备，该网络设备包括：接收模块；该接收模块，用于在UE的第二小区上，从该UE接收该UE的第一小区的无线链路恢复请求；其中，第一小区的无线链路恢复请求用于指示第一小区发生目标事件；第一小区包括以下至少一项：主小区，第一辅小区；第二小区包括以下至少一项：该主小区，第一辅小区，第二辅小区；第一辅小区为调度该主小区的辅小区；第二辅小区为该UE的辅小区中除第一辅小区之外的辅小区；该目标事件为波束失败BF或无线链路失败RLF。
第五方面，本发明实施例提供了一种UE，包括处理器、存储器及存储在所述存储器上并可在所述处理器上运行的计算机程序，所述计算机程序被所述处理器执行时实现如第一方面所述的无线链路恢复方法的步骤。
第六方面，本发明实施例提供一种网络设备，包括处理器、存储器及存储在所述存储器上并可在所述处理器上运行的计算机程序，所述计算机程序被所述处理器执行时实现如第二方面所述的无线链路恢复方法的步骤。
第七方面，本发明实施例提供一种通信系统，该通信系统包括如上述第三方面中的UE、以及如上述第四方面中的网络设备。
第八方面，本发明实施例提供一种计算机可读存储介质，所述计算机可读存储介质上存储计算机程序，所述计算机程序被处理器执行时实现如上述无线链路恢复方法的步骤。
在本发明实施例中，若UE的第一小区(包括以下至少一项：该主小区，第一辅小区(调度主小区的辅小区))发生目标事件(BF或RLF)，在该UE的第二小区(包括以下至少一项：该主小区，第一辅小区，第二辅小区(该UE的辅小区中除第一辅小区之外的辅小区))上，向网络设备发送第一小区的无线链路恢复请求。通过该方案，在第一小区发生目标事件时，可以在第二小区上向网络设备发送第一小区的无线链路恢复请求(则网络设备在收到该第一小区的无线链路恢复请求之后，可以知道是第一小区发生了目标事件，然后可以进一步触发第一小区的无线链路恢复)，从而在辅小区调度主小区的情况下，若主小区发生BF或RLF，或辅小区发生BF或RLF，可 以快速实现无线链路恢复。
附图说明
图1为本发明实施例提供的一种通信系统的架构示意图；
图2为本发明实施例提供的无线链路恢复方法的流程图之一；
图3为本发明实施例提供的无线链路恢复方法的流程图之二；
图4为本发明实施例提供的一种UE的结构示意图；
图5为本发明实施例提供的一种UE的硬件示意图；
图6为本发明实施例提供的一种网络设备的结构示意图；
图7为本发明实施例提供的一种网络设备的硬件示意图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
在本发明实施例中，“示例性的”或者“例如”等词用于表示作例子、例证或说明。本发明实施例中被描述为“示例性的”或者“例如”的任何实施例或设计方案不应被解释为比其它实施例或设计方案更优选或更具优势。确切而言，使用“示例性的”或者“例如”等词旨在以具体方式呈现相关概念。
在本发明实施例的描述中，除非另有说明，“多个”的含义是指两个或者两个以上，例如，多个处理单元是指两个或者两个以上的处理单元；多个元件是指两个或者两个以上的元件等。
在高频段通信系统中，发生通信中断时，采用传统无线链路重建的方式来恢复通信，用时较长，因此需要引入快速恢复无线链路的机制。
1、主小区发生BF
在主小区调度辅小区的情况下，Rel-15中引入了主小区的波束失败恢复(Beam Failure Recovery，BFR)机制。当UE的主小区的下行波束发生失败的时候，UE会触发波束失败恢复请求过程(即beam failure recovery request procedure)。例如，UE会在主小区上发送即随机接入前导码(preamble)，并在主小区上监控网络设备的响应(即一个小区无线网络临时标识(Cell Radio Network Temporary Identifier，C-RNTI))加扰的PDCCH)。当UE接收到该C-RNTI PDCCH后，UE判断该小区对应的(服务)波束恢复成功。
波束失败恢复机制一般包括：波束失败检测(Beam failure detection)、候选波束识别(New candidate beam identification)、发送波束失败恢复请求(Beam failure recovery request，BFRQ)以及接收波束失败恢复请求应答(response for beam failure recovery request)四项内容，具体如下所述：
波束失败检测：UE在物理层对波束失败检测参考信号(beam failure detection reference signal，BFD RS)进行测量，并根据测量结果来判断是否发生波束失败事件。判断的条件是：如果检测出全部服务波束(serving beam)的度量标准(metric)(假设物理下行控制信道误块率(hypothetical Physical Downlink Control Channel block error rate，hypothetical  PDCCHBLER))满足预设条件(如，超过预设阈值)，则确定为一次波束失败实例(beam failure instance，BFI)，UE物理层上报给UE高层(MAC层)一个指示，该上报过程是周期的，BFI上报周期为BFD RS的最短周期，下界是2ms。反之，如果UE物理层确定没有发生beam failure instance，则不向高层发送指示。UE高层使用计数器(counter)和定时器(timer)对物理层上报的BFI进行计数，每收到BFI则重启timer，timer超时则counter重新计数，当counter达到网络配置的最大次数时，UE确定发生了波束失败事件(beam failure event)。现有技术中UE的MAC层的counter和timer是对每个激活带宽部分(active BWP)配置的，每个BWP上的counter和timer的启动和维护是独立的，即每个BWP的counter和timer独立工作，包括启动、重置、计数、计时等。
候选波束识别：网络设备为UE配置候选波束参考信号(candidatebeam RS)，UE物理层测量候选波束参考信号，寻找新的候选波束(candidate beam)。本步骤不强制在波束失败事件发生后，也可以在之前，即可以在任意时刻发生。当UE物理层收到来自UE高层的请求或指示或通知时，将满足预设条件(对candidate beam RS的测量层1-参考信号接收功率(Layer 1-Reference Signal Receiving Power，L1-RSRP)超过预设门限)的测量结果上报给UE高层，上报内容为{beam RS index,L1-RSRP}，UE高层基于物理层的上报，来选择candidate beam。
2、辅小区发生BF
在主小区调度辅小区的情况下，在Rel-16中引入了辅小区的BF恢复机制，具体如下：
网络设备不会给辅小区配置BFR RACH、BFR search space和BFR CORESET。当辅小区发生BF时，如果此时有上行资源，则会在PDCCH调度的上行资源中通过SCell BFR媒体接入控制-控制单元(Medium Access Control Control Element，MAC CE)向网络设备发送BF恢复请求，该MAC CE携带了出现BF的辅小区的标识(id)。且在收到BFR MAC CE之前，网络设备无法确定具体是哪些辅小区发生了BF。如果辅小区发生BF时没有上行资源，则UE先发送一个调度请求(Scheduling Request，SR)请求网络设备分配上行资源，然后在网络设备分配的上行资源中通过SCell BFR MAC CE向网络设备发送BF恢复请求。该调度请求在一个专门配置给Scell BFR的一个调度请求资源上发送。
网络设备根据该SCell BFR MAC CE中携带的辅小区的标识，能够获知哪个辅小区发生了BF。类似Pcell BFR流程，此时网络设备也需要反馈一个响应给UE，该响应为一个C-RNTI加扰的调度新传的上行授权(UL grant)(该上行授权也是一个PDCCH)，且该PDCCH中携带的HARQ process id和SCell BFR MAC CE的HARQ process id相同。例如UE在一个携带了HARQ process id＝1的下行控制信息(DownlinkControl Information，DCI)分配的上行资源上传输了SCell BFR MAC CE，然后收到了另外一个携带了HARQ process id＝1的调度上行的且新数据指示(New Data Indicator，NDI)翻转的DCI，此时UE可以认为Scell BFR成功并取消该辅小区所有触发的BFR(Beam Failure Recovery procedure successfully completed andcancel all the triggeredBFRs forthis Serving Cell)。
3、无线链路失败(Radio linkFailure，RLF)
在长期演进(Long Term Evolution，LTE)系统中或5G新空口(NR)系统中，UE具有无线链路监控(Radio linkMonitor，RLM)功能。以在LTE系统中的RLM功能为例说明，UE通过测量参考信号(Reference Signal，RS)的信号与干扰加噪声比(signal-to-noise  and interference ratio，SINR)来实现对无线链路的监听。当测量的参考信号低于一定门限值则认定该无线链路“失步”(“out-of-sync，OOS”)，则UE的物理层通知UE高层(RRC层)一个“out-of-sync”指示，如果RRC层连续接收到N个“out-of-sync”指示，则UE开启一个计时器(Timer)T1；当测量的参考信号高于一定门限值则认定该无线链路“同步”(“in-sync，IS”)，则物理层通知RRC层一个“in-sync”指示，如果RRC层连续收到M个“in-sync”指示，则UE停止Timer T1的运行。其中，“out-of-sync”和“in-sync”计数的次数(N和M)是网络设备配置的，并且当达到次数后Timer运行的时长也是网络设备可配的。
如果timer T1运行超时，则UE判断对应小区发生RLF。
在辅小区调度主小区的情况下，无论是主小区发生BF或RLF，还是调度主小区的辅小区发生BF或RLF，目前都没有一种可以快速实现无线链路恢复的机制。本发明实施例中，无线链路恢复的机制包括但不限于以下两种：BF恢复机制和RLF恢复机制。
本发明实施例中，辅小区调度主小区可能属于一个功能特性或者能力，网络设备或协议部署了该特性或能力，或者UE支持了该特性或能力，说明可能出现辅小区调度主小区，并不意味着网络设备的每次调度都是辅小区调度主小区，依然可能有主小区调度辅小区，主小区自调度，辅小区自调度，辅小区调其他辅小区等。在满足第一条件的情况下，可以出现辅小区调度主小区。第一条件具体的可以包括以下任意一种：1、网络设备或协议等配置了第一辅小区可以调度主小区或主小区可以被其他小区调度的特性；2、网络设备或协议等指示了第一辅小区具有可以调度主小区或主小区可以被其他小区调度的特性；3、第一辅小区的控制信令(可以)指示主小区；4、主小区为被调度小区；5、主小区和某个被调度小区标识对应(例如CIF＝某个值时，表示是主小区)。
本发明实施例提供一种无线链路恢复方法，若UE的第一小区(包括以下至少一项：该主小区，第一辅小区(调度主小区的辅小区))发生目标事件(BF或RLF)，在该UE的第二小区(包括以下至少一项：该主小区，第一辅小区，第二辅小区(该UE的辅小区中除第一辅小区之外的辅小区))上，向网络设备发送第一小区的无线链路恢复请求。通过该方案，在第一小区发生目标事件时，可以在第二小区上向网络设备发送第一小区的无线链路恢复请求(则网络设备在收到该第一小区的无线链路恢复请求之后，可以知道是第一小区发生了目标事件，然后可以进一步触发第一小区的无线链路恢复)，从而在辅小区调度主小区的情况下，若主小区发生BF或RLF，或辅小区发生BF或RLF，可以快速实现无线链路恢复。
本发明提供的技术方案可以应用于各种通信系统，例如，5G通信系统，未来演进系统，或者多种通信融合系统等等。可以包括多种应用场景，例如，机器对机器(Machine to Machine，M2M)、D2M、宏微通信、增强型移动互联网(enhance Mobile Broadband，eMBB)、超高可靠性与超低时延通信(ultra Reliable&Low Latency Communication，uRLLC)以及海量物联网通信(Massive Machine Type Communication，mMTC)等场景。这些场景包括但不限于：UE与UE之间的通信，或网络设备与网络设备之间的通信，或网络设备与UE间的通信等场景中。本发明实施例可以应用于与5G通信系统中的网络设备与UE之间的通信，或UE与UE之间的通信，或网络设备与网络设备之间的通信。
图1示出了本发明实施例所涉及的通信系统的一种可能的结构示意图。如图1所示， 该通信系统包括至少一个网络设备100(图1中仅以一个为例说明)以及每个网络设备100所连接的一个或多个UE 200(图1中仅以一个为例说明)。
该至少一个网络设备100可以服务至少一个小区群(如主小区群(Master Cell Group，MCG)，或者，辅小区群(Secondary Cell Group，SCG))。其中，一个小区群中至少包括一个主小区，可能还包括至少一个辅小区；本发明实施例中，主小区是特殊小区(special cell，SPcell)，可以为MCG中的Pcell，也可以为SCG中的PScell。
示例性的，上述图1所示通信系统可以是多载波通信系统，例如，载波聚合场景、双连接场景等，本发明实施例不作限定。
其中，上述的网络设备100可以为基站、核心网设备、发射接收节点(Transmission and ReceptionPoint，TRP)、中继站或接入点等。网络设备100可以是全球移动通信系统(Global System for Mobile communication，GSM)或码分多址(Code Division Multiple Access，CDMA)网络中的基站收发信台(Base Transceiver Station，BTS)，也可以是宽带码分多址(Wideband Code Division Multiple Access，WCDMA)中的NB(NodeB)，还可以是LTE中的eNB或eNodeB(evolutional NodeB)。网络设备100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。网络设备100还可以是5G通信系统中的网络设备或未来演进网络中的网络设备。然用词并不构成对本发明的限制。
UE 200可以为无线UE也可以为有线UE，该无线UE可以是指向用户提供语音和/或其他业务数据连通性的设备，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UE或者未来演进的PLMN网络中的UE等。无线UE可以经无线接入网(Radio Access Network，RAN)与一个或多个核心网进行通信，无线UE可以是移动设备，如移动电话(或称为“蜂窝”电话)和具有移动设备的计算机，例如，可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置，它们与无线接入网交换语言和/或数据，以及个人通信业务(Personal Communication Service，PCS)电话、无绳电话、会话发起协议(Session Initiation Protocol，SIP)话机、无线本地环路(Wireless Local Loop，WLL)站、个人数字助理(Personal Digital Assistant，PDA)等设备，无线UE也可以为移动设备、终端设备、接入终端设备、无线通信设备、终端设备单元、终端设备站、移动站(Mobile Station)、移动台(Mobile)、远程站(Remote Station)、远方站、远程终端设备(Remote Terminal)、订户单元(Subscriber Unit)、订户站(Subscriber Station)、用户代理(User Agent)、终端设备装置等。作为一种实例，在本发明实施例中，图1以UE 200是手机为例示出。
下面结合附图，以UE与网络设备之间的交互为例，通过具体的实施例及其应用场景对本发明实施例提供的一种无线链路恢复方法及设备进行详细地说明。
基于如图1所示的通信系统，本发明实施例提供一种无线链路恢复方法，如图2所示，该无线链路恢复方法可以包括下述的步骤201-步骤202。
步骤201、若UE的第一小区发生目标事件，UE在UE的第二小区上，向网络设备发送第一小区的无线链路恢复请求。
其中，第一小区包括以下至少一项：该主小区，第一辅小区；第二小区包括以下至少一项：该主小区，第一辅小区，第二辅小区；第一辅小区为调度该主小区的辅小区，第二辅小区为该UE的辅小区中除第一辅小区之外的辅小区；该目标事件为BF或RLF。
可以理解，本发明实施例提供的无线链路恢复方法，可以适用于主小区发生目标事件的场景，也可以适用于第一辅小区(调度主小区的辅小区)发生目标事件的场景，也可以适用于主小区和第一辅小区均发生目标事件的场景，具体可以根据实际使用需求确定，本发明实施例不作限定。
可以理解，本发明实施例中，第二小区可以包括以下7种情况中的任意一种：1、主小区；2、第一辅小区，3、第二辅小区(该UE的辅小区中除第一辅小区之外的至少一个辅小区)；4、主小区和第一辅小区；5、主小区和第二辅小区；6第一辅小区和第二辅小区；7、主小区、第一辅小区和第二辅小区。
可以理解，本发明实施例中，若第一小区发生BF，则第一小区的无线链路恢复请求为波束失败恢复请求；若第一小区发生RLF，则第一小区的无线链路恢复请求为无线链路失败恢复请求。
步骤202、网络设备在UE的第二小区上，从该UE接收UE的第一小区的无线链路恢复请求。
其中，第一小区的无线链路恢复请求用于指示第一小区发生目标事件。
可选地，本发明实施例中，在该UE的第一辅小区调度该UE的主小区的情况下，若第一小区发生目标事件，UE和网络设备之间可以通过任意载体交互第一小区的无线链路恢复请求，具体载体可以根据实际使用需求确定，本发明实施例不作限定。
可选地，本发明实施例中，在该UE的第一辅小区调度该UE的主小区的情况下，若第一小区发生目标事件，UE可以通过特定载体，向网络设备发送第一小区的无线链路恢复请求。
示例性地，上述步骤201具体地可以通过下述的步骤201a实现；上述步骤202具体地可以通过下述步骤202a实现。
步骤201a、UE在第二小区上，通过第一载体向网络设备发送第一小区的无线链路恢复请求。
步骤202a、网络设备在第二小区上，通过第一载体从该UE接收第一小区的无线链路恢复请求。
本发明实施例中，UE通过特定载体，向网络设备发送第一小区的无线链路恢复请求，可以更好地快速实现无线链路恢复。
可选地，本发明实施例中，第一载体可以包括以下至少一项：目标RACH，目标调度请求，目标MAC CE。
可以理解，本发明实施例中，第一载体可以包括目标随机接入信道RACH，目标调度请求，目标媒体接入控制-控制单元MAC CE中的一个或多个。
可以理解，针对第二小区中的任意一个小区，UE可以在该小区上，通过一种第一载体向网络设备发送第一小区的无线链路恢复请求(网络设备可以在该小区上，通过一种第一载体从该UE接收第一小区的无线链路恢复请求)；UE可以在该小区上，通过不同的第一载体分别向网络设备发送第一小区的无线链路恢复请求(网络设备可以在该小区上，通过不同的第一载体分别从该UE接收第一小区的无线链路恢复请求)。
示例性的，目标事件为BF，第一小区为第一辅小区，第二小区为主小区。第一辅小区发生BF，一种情况下，UE可以在主小区上，通过主小区对应的目标RACH向网络设备发 送无线链路失败恢复请求；另一种情况下，UE可以在主小区上，通过主小区对应的目标RACH和主小区对应的目标调度请求，分别向网络设备发送无线链路失败恢复请求。
可以理解，针对第二小区中的不同小区，UE可以分别在不同小区上，通过同种第一载体向网络设备发送第一小区的无线链路恢复请求(网络设备可以在不同小区上，通过同种第一载体从该UE接收第一小区的无线链路恢复请求)；UE可以分别在不同小区上，通过不同的第一载体向网络设备发送第一小区的无线链路恢复请求(网络设备可以在不同小区上，通过不同的第一载体从该UE接收第一小区的无线链路恢复请求)。
示例性的，目标事件为BF，第一小区为主小区，第二小区为主小区和第一辅小区。主小区发生BF，一种情况下，UE可以在主小区上，通过主小区对应的目标RACH向网络设备发送第一小区的波束失败恢复请求，同时UE在第一辅小区上，通过第一辅小区对应的目标RACH向网络设备发送第一小区的波束失败恢复请求；另一种情况下，UE可以在主小区上，通过主小区对应的目标RACH向网络设备发送第一小区的波束失败恢复请求，同时UE在第一辅小区上，通过第一辅小区对应的目标MAC CE向网络设备发送第一小区的波束失败恢复请求。
本发明实施例中，第一载体还可以是其他的可行性载体，本发明实施例不作限定。
本发明实施例中，提供了多种第一载体，有利于快速实现无线链路恢复。
以下分情况对第一载体包括目标RACH，第一载体包括目标调度请求，以及第一载体包括目标MAC CE，进行详细说明。
第一载体包括目标RACH。
可选地，本发明实施例中，该目标RACH用于恢复第一小区的无线链路，具体地，该目标RACH可以专用于恢复第一小区的无线链路，也可以除用于恢复第一小区的无线链路之外，还可以用于其他功能，具体可以根据实际使用需求确定，本发明实施例不作限定。
第一载体包括该目标调度请求。
可选地，本发明实施例中，在第一载体包括该目标调度请求的情况下，该目标调度请求为用于恢复第一小区的无线链路的N个调度请求中的至少一个，N为正整数。
可以理解，本发明实施例中，该目标调度请求为用于恢复第一小区的无线链路的N个调度请求中的任意至少一个，也可以为该N个调度请求中满足一定条件的至少一个，具体可以根据实际使用需求确定，本发明实施例不作限定。
示例性地，在第一小区包括主小区的情况下，该N个调度请求为用于恢复主小区的无线链路的调度请求，或者该N个调度请求为用于恢复主小区和第一辅小区的无线链路的调度请求。
示例性地，在第一小区包括第一辅小区的情况下，该N个调度请求为用于恢复第一辅小区的无线链路的调度请求，或者，该N个调度请求为用于恢复主小区和第一辅小区的无线链路的调度请求。
需要说明的是，本发明实施例中，该N个调度请求可以为专用于恢复第一小区的无线链路的调度请求，也可以为非专用于恢复第一小区的无线链路的调度请求(即该N个调度请求除了用于恢复第一小区的无线链路，也可以用于其他调度)，本发明实施例不作限定。
本发明实施例中，目标调度请求为用于恢复第一小区的无线链路的N个调度请求中的至少一个，可以更好地快速实现无线链路恢复。
可选地，本发明实施例中，该N个调度请求中的M个调度请求中的每个调度请求关联有候选波束参考信号，M为小于或等于N的正整数。
可以理解，本发明实施例中，该M个调度请求中的每个调度请求关联有至少一个候选波束参考信号。
可选地，该N个调度请求中，除该关联有候选波束参考信号的M个调度请求之外的(N-M)个调度请求均未关联有候选波束参考信号。
如此，目标调度请求中可以包括关联有候选波束参考信号，又可以包括未关联有候选波束参考信号的调度请求，具体可以根据实际使用需求确定，本发明实施例不作限定。
本发明实施例中，该N个调度请求中既可以包括关联有候选波束参考信号的调度请求，又可以包括未关联有候选波束参考信号的调度请求，如此，为目标调度请求提供了多种可能的选择，可以更好地快速实现无线链路恢复。
可选地，本发明实施例中，该目标调度请求是基于该M个调度请求中的每个调度请求关联的候选波束参考信号的测量结果确定的。
可以理解，该目标调度请求是该M个调度请求中的至少一个。
本发明实施例中，该目标调度请求是该M个调度请求中的至少一个，可以更好地快速实现无线链路恢复。
可选地，本发明实施例中，该目标调度请求也可以是该M个调度请求中的任意至少一个。
可选地，本发明实施例中，在该目标调度请求是基于该M个调度请求中的每个调度请求关联的候选波束参考信号的测量结果确定的情况下，该目标调度请求为第一候选波束参考信号对应的调度请求；其中，第一候选波束参考信号为满足预定条件的候选波束参考信号。
进一步可选地，本发明实施例中，该预定条件包括以下任意一项：第一候选波束参考信号为该M个调度请求关联的候选波束参考信号中，测量结果大于或等于第一阈值的候选波束参考信号；第一候选波束参考信号为该M个调度请求关联的候选波束参考信号中，对应的候选波束的索引最小的至少一个；第一候选波束参考信号为该M个调度请求关联的候选波束参考信号中，对应的候选波束的索引最大的至少一个；第一候选波束参考信号为该M个调度请求关联的候选波束参考信号中，对应的候选波束的索引距第一小区的波束的索引最近的至少一个。
本发明实施例中，第一阈值的取值范围可以根据实际使用需求确定，本发明实施例不作限定。
本发明实施例中，目标调度请求为满足预定条件的候选波束参考信号对应的调度请求，可以更好地快速实现无线链路恢复。而且，本发明实施例中，提供了多种预定条件的可能情况，因此可以根据实际使用需求确定更合适的目标调度请求，从而更好地快速实现无线链路恢复。
可选地，本发明实施例中，该目标调度请求为未关联候选波束参考信号的调度请求。例如，该目标调度请求可以为该未关联候选波束参考信号的调度请求中的任意至少一个。
可选地，本发明实施例中，该目标调度请求为该UE未检测到关联候选波束参考信号的调度请求(可以理解，目标调度请求中的至少一个调度请求可能关联有候选波束参考信 号，但UE未检测到其关联候选波束参考信号)。例如，该目标调度请求可以为该UE未检测到关联候选波束参考信号的调度请求中的任意至少一个。
本发明实施例中，提供了多种获得目标调度请求的方案，从而可以根据实际使用需求确定更合适的目标调度请求，从而更好地快速实现无线链路恢复。
第一载体包括该目标MAC CE。
可选地，本发明实施例中，在第一载体包括该目标MAC CE的情况下，UE需要先确定在第二小区上是否存在合适的可用上行资源，若存在合适的可用的上行资源，则通过该上行资源向网络设备发送该目标MAC CE；否则，UE需要先向网络设备请求上行资源。
示例性地，在第一载体包括该目标MAC CE的情况下，若第二小区存在上行资源，上述步骤201a具体的可以通过下述步骤201b实现；上述步骤202a具体地可以通过下述步骤202b实现。
步骤201b、若第二小区存在第一上行资源，则UE在第一上行资源上，通过该目标MAC CE向该网络设备发送第一小区的无线链路恢复请求。
步骤202b、若第二小区存在第一上行资源，则网络设备在第一上行资源上，通过该目标MAC CE从该UE接收第一小区的无线链路恢复请求。
第一上行资源为在第二小区上存在的合适的可用的上行资源。
可以理解，本发明实施例中，如果上行资源可用于新传输，并且上行共享信道(Uplink Shared Channel，UL-SCH)资源可容纳MAC CE(if UL resources are available for a new transmission and the UL-SCH resources can accommodate the MAC CE)，则该上行资源为第一上行资源。
示例性地，在第一载体包括该目标MAC CE的情况下，若第二小区不存在上行资源，上述步骤201a之前，本发明实施例提供的无线链路恢复方法还可以包括下述的步骤203-步骤204。
步骤203、若第二小区不存在上行资源，UE向该网络设备发送第一调度请求。
步骤204、若第二小区不存在上行资源，网络设备从该UE接收第一调度请求。
进一步示例性地，在上述步骤204之后，本发明实施例提供的无线链路恢复方法还可以包括下述的步骤205-步骤206；上述步骤201a具体的可以通过下述步骤201c实现；上述步骤202a具体地可以通过下述步骤202c实现。
步骤205、网络设备向UE发送目标上行授权。
步骤206、UE从网络设备接收该目标上行授权。
步骤201c、UE在第二小区的该目标上行授权对应的上行资源上，通过该目标MAC CE向该网络设备发送第一小区的无线链路恢复请求。
步骤202c、网络设备在第二小区的该目标上行授权对应的上行资源上，通过该目标MAC CE从该UE接收第一小区的无线链路恢复请求。
本发明实施例中，针对UE在第二小区上存在上行资源和不存在上行资源两种情况，分别提供了如何通过该目标MAC CE，向网络设备发送第一小区的无线链路恢复请求的方案，如此可以更好地快速实现无线链路恢复。
可选地，本发明实施例中，第一调度请求满足以下任意一项：用于恢复第一小区的无线链路的调度请求，用于恢复任意辅小区的无线链路的调度请求。
可以理解，第一调度请求用于恢复第一小区的无线链路，具体包括，第一调度请求可以为专用于恢复第一小区的无线链路，或者，第一调度请求除了可以用于恢复第一小区的无线链路之外，还可以用于其他功能。
可以理解，第一调度请求用于恢复任意辅小区的无线链路，具体包括，第一调度请求可以为专用于恢复任意辅小区的无线链路，或者，第一调度请求除了可以用于恢复任意辅小区的无线链路之外，还可以用于其他功能。
示例性地，在第一小区包括主小区的情况下，第一调度请求为用于恢复主小区的无线链路的调度请求，或者，为用于恢复主小区和第一辅小区的无线链路的调度请求，或者，为用于恢复任意辅小区的无线链路的调度请求。
示例性地，在第一小区包括第一辅小区的情况下，第一调度请求为用于恢复第一辅小区的无线链路的调度请求，或者，为用于恢复主小区和第一辅小区的无线链路的调度请求，或者，为用于恢复任意辅小区的无线链路的调度请求。
可选地，本发明实施例中，第一调度请求也可以是任意的调度请求，本发明实施例不作限定。
本发明实施例中，提供了多种可能的第一调度请求，从而可以根据实际使用需求确定第一调度请求，而且，当第一调度请求为用于恢复第一小区的无线链路的调度请求时，或用于恢复任意辅小区的无线链路的调度请求时，可以更好地快速实现无线链路恢复。
进一步可选地，在第一调度请求为用于恢复第一小区的无线链路的调度请求的情况下，上述步骤205-步骤206具体可以通过下述步骤205a-步骤206a实现。
步骤205a、网络设备在UE的小区中除第一小区之外的小区上，向UE发送目标上行授权。
网络设备接收到用于恢复第一小区的无线链路的第一调度请求，可以获知第一小区发生了目标事件，从而在UE的小区中除第一小区之外的小区上，向UE发送目标上行授权，如此可以保证UE可以接收到目标上行授权。
步骤206a、UE在UE的小区中除第一小区之外的小区上，从网络设备接收该目标上行授权。
本发明实施例中，在第一小区发生目标事件的情况下，网络设备接收到用于恢复第一小区的无线链路的第一调度请求之后，从除第一小区之外的小区上向UE发送目标上行授权，可以保证UE能够接收到该目标上行授权，从而可以更好地快速实现无线链路恢复。
进一步可选地，在第一调度请求为用于恢复任意辅小区的无线链路的调度请求的情况下，上述步骤205-步骤206具体可以通过下述步骤205b-步骤206b实现。
步骤205b、网络设备在UE的小区中除主小区和第一辅小区之外的任意辅小区上，向UE发送目标上行授权。
网络设备接收到用于恢复任意辅小区的无线链路的第一调度请求，可以获知有小区发生了目标事件，但不知道具体是哪个或哪些小区发生了目标事件，如此网络设备在UE的小区中除主小区和第一辅小区之外的任意辅小区上，向UE发送目标上行授权，可以保证UE能够接收到该目标上行授权，从而可以更好地快速实现无线链路恢复。
步骤206b、UE在UE的小区中除主小区和第一辅小区之外的任意辅小区上，从网络设备接收该目标上行授权。
本发明实施例中，在第一小区发生目标事件的情况下，网络设备接收到用于恢复任意辅小区的无线链路的第一调度请求之后，从除主小区和第一辅小区之外的任意辅小区上UE发送目标上行授权，可以保证UE能够接收到该目标上行授权，从而可以更好地快速实现无线链路恢复。
可选地，该目标MAC CE满足以下至少一项：用于恢复第一小区的无线链路，携带目标标识；其中，该目标标识用于指示第一小区。
可以理解，本发明实施例中，该目标MAC CE与第一小区关联。具体地，该目标MAC CE可以为用于恢复第一小区的无线链路的MAC CE，也可以为携带目标标识的MAC CE，还可以为用于恢复第一小区的无线链路的、且携带目标标识的MAC CE。
可以理解，针对该目标MAC CE为用于恢复第一小区的无线链路的MAC CE，在第一小区包括主小区的情况下，该目标MAC CE可以为用于恢复主小区的无线链路的MAC CE，也可以为用于恢复主小区和第一辅小区的无线链路的MAC CE；在第一小区包括第一辅小区的情况下，该目标MAC CE可以为用于恢复第一辅小区的无线链路的MAC CE，也可以为用于恢复主小区和第一辅小区的无线链路的MAC CE。
可选地，针对该目标MAC CE为携带目标标识的MAC CE，本发明实施例中，目标标识可以为至少一个标识。
可选地，本发明实施例中，目标标识可以为以下任意一项：主小区的标识，第一辅小区的标识，任意一个辅小区的标识，主小区的标识和第一辅小区的标识，主小区和第一辅小区的联合标识。目标标识还可以为其他的，本发明实施例不作限定。
可选地，本发明实施例中，主小区和第一辅小区的联合标识可以为主小区和第一辅小区这个组合对应的某个标识，即不同的小区组合对应不同的标识。
本发明实施例中，小区的标识可以为小区的id或小区的索引，也可以为其他可行性内容，本发明实施例不作限定。
示例性地，在第一小区为主小区的情况下，目标标识用于指示主小区，目标标识可以为以下任意一项：主小区的标识，第一辅小区的标识，任意一个辅小区的标识，主小区的标识和第一辅小区的标识，主小区和第一辅小区的联合标识。
示例性地，在第一小区为第一辅小区的情况下，目标标识用于指示第一辅小区，目标标识可以为以下任意一项：主小区的标识，第一辅小区的标识，任意一个辅小区的标识，主小区的标识和第一辅小区的标识，主小区和第一辅小区的联合标识。
示例性地，在第一小区为主小区和第一辅小区的情况下，目标标识用于指示主小区和第一辅小区，目标标识可以为以下任意一项：主小区的标识，第一辅小区的标识，任意一个辅小区的标识，主小区的标识和第一辅小区的标识，主小区和第一辅小区的联合标识。
可选地，当第一小区为主小区和第一辅小区的情况下，目标标识可以包括第一标识和第二标识。其中，第一标识用于指示主小区，第二标识用于指示第一辅小区。
可以理解，对第一标识和第二标识的具体描述可以参考上述对目标标识的相关描述，此处不予赘述。
需要说明的是，本发明实施例中，目标标识指示第一小区，可以是目标标识本身指示第一小区，也可以是目标标识对应的某个参数指示第一小区，还可以为其他情况，本发明实施例不作限定。例如一个bitmap，每个bit对应一个小区，此时某个bit为1就表示了其 对应的小区出现BF，为0就表明其对应的小区没有出现BF，此时目标标识并不是小区标识(例如，id)而是小区标识对应的某个比特位。
本发明实施例中，在该目标MAC CE与第一小区关联的情况下，网络设备可以根据目标MAC CE快速获知第一小区发生了目标事件，从而可以更好地快速实现无线链路恢复。
可选地，本发明实施例中，该目标MAC CE也可以为未与第一小区关联的MAC CE，本发明实施例不作限定。
可选地，若该UE检测到目标候选波束，该目标MAC CE中携带以下至少一项：该目标候选波束的索引，第一指示信息；第一指示信息用于指示该UE检测到该目标候选波束；若该UE未检测到该目标候选波束，该目标MAC CE中携带第二指示信息；第二指示信息用于指示该UE未检测到该目标候选波束。
本发明实施例中，在该目标MAC CE中携带目标候选波束的索引和第一指示信息中的至少一个，或者携带第二指示信息，可以便于网络设备获知UE是否检测到合适的用于进行无线链路恢复的目标候选波束，从而可以更好地快速实现无线链路恢复。
进一步一种可选的情况，基于上述步骤201b-步骤202b，若该UE检测到目标候选波束，该目标MAC CE中携带以下至少一项：该目标候选波束的索引，第一指示信息；第一指示信息用于指示该UE检测到该目标候选波束；若该UE未检测到该目标候选波束，该目标MAC CE中携带第二指示信息；第二指示信息用于指示该UE未检测到该目标候选波束。
进一步另一种可选的情况，基于上述步骤203-步骤204，若该UE检测到目标候选波束，第一调度请求和该目标MAC CE中的至少一个，携带以下至少一项：该目标候选波束的索引，第一指示信息；第一指示信息用于指示该UE检测到该目标候选波束(即分为三种情况，第一种，第一调度请求中携带以下至少一项：该目标候选波束的索引，第一指示信息；第二种，该目标MAC CE中携带以下至少一项：该目标候选波束的索引，第一指示信息；第三种，第一调度请求和该目标MAC CE中均携带以下至少一项：该目标候选波束的索引，第一指示信息)；若该UE未检测到该目标候选波束，第一调度请求和该目标MAC CE中的至少一个，携带第二指示信息；第二指示信息用于指示该UE未检测到该目标候选波束(即分为三种情况，第一种，第一调度请求中第二指示信息；第二种，该目标MAC CE中携带第二指示信息；第三种，第一调度请求和该目标MAC CE中均携带第二指示信息)。
本发明实施例中，在第一调度请求和该目标MAC CE中的至少一个中，携带目标候选波束的索引和第一指示信息中的至少一个，或者携带第二指示信息，可以便于网络设备获知UE是否检测到合适的用于进行无线链路恢复的目标候选波束，从而可以更好地快速实现无线链路恢复。
可选的，本发明实施例中，目标MAC CE关联有(至少一个)候选波束参考信号。在目标MAC CE中携带该目标候选波束的索引和第一指示信息中至少一项的情况下，目标MAC CE关联有(至少一个)候选波束参考信号，且UE基于目标MAC CE关联的候选波束参考信号的测量结果检测到了合适的目标候选波束。在目标MAC CE中携带第二指示信息的情况下，目标MAC CE关联有(至少一个)候选波束参考信号，且UE基于目标MAC CE关联的候选波束参考信号的测量结果未检测到合适(即满足一定条件，具体条件可以参考上述对预定条件的描述，此处不予赘述)的目标候选波束。
可选的，本发明实施例中，目标MAC CE也可以为未关联候选波束参考信号的MAC CE。
可选地，本发明实施例中，目标MAC CE也可以为该UE未检测到关联候选波束参考信号的MAC CE(可以理解，目标MAC CE可能关联有候选波束参考信号，但UE未检测到其关联候选波束参考信号)。
可选的，本发明实施例中，第一调度请求关联有(至少一个)候选波束参考信号。在第一调度请求中携带该目标候选波束的索引和第一指示信息中至少一项的情况下，第一调度请求关联有(至少一个)候选波束参考信号，且UE基于第一调度请求关联的候选波束参考信号的测量结果检测到了合适(即满足特定条件，具体条件可以参考上述对预定条件的描述，此处不予赘述)的目标候选波束。在第一调度请求中携带第二指示信息的情况下，第一调度请求关联有(至少一个)候选波束参考信号，且UE基于第一调度请求关联的候选波束参考信号的测量结果未检测到合适的目标候选波束。
可选的，本发明实施例中，第一调度请求也可以为未关联候选波束参考信号的调度请求。
可选地，本发明实施例中，第一调度请求也可以为该UE未检测到关联候选波束参考信号的调度请求(可以理解，第一调度请求可能关联有候选波束参考信号，但UE未检测到其关联候选波束参考信号)。
可选地，在上述步骤201之前，UE需要先获取用于恢复第一小区的无线链路的资源。
示例性的，在上述步骤201之前，本发明实施例提供的无线链路恢复方法还可以包括下述的步骤207。
步骤207、UE获取第一目标配置信息。
其中，第一目标配置信息用于恢复第一小区的无线链路。
可选地，本发明实施例中，第一目标配置信息可以专用于恢复第一小区的无线链路；第一目标配置信息也可以既用于恢复第一小区的无线链路，又用于除恢复第一小区的无线链路之外的其他调度。
可以理解，针对第一目标配置信息既用于恢复第一小区的无线链路，又用于除恢复第一小区的无线链路之外的其他调度：一种可能的情况，第一目标配置信息既可以用于恢复第一小区的无线链路，又可以用于其他调度。另一种可能的情况，第一目标配置信息中包括用于恢复第一小区的无线链路的配置信息，还包括用于其他调度的配置信息。
本发明实施例中，UE获取第一目标配置信息之后，可以根据第一目标配置信息，确定第二小区，然后在第二小区上向该网络设备发送第一小区的无线链路恢复请求，从而可以更好地快速实现无线链路恢复。
可选地，第一目标配置信息可以是UE自己确定的，也可以是网络设备为UE预配置的，也可以是协议规定的，还可以是其他的可行性情况，具体可以根据实际使用需求确定，本发明实施例不作限定。
示例性的，在第一目标配置信息是网络设备为UE预配置的情况下，在上述步骤207之前，本发明实施例提供的无线链路恢复方法还可以包括下述的步骤208；上述步骤207具体地可以通过下述步骤207a实现。
步骤208、网络设备向该UE发送第一目标配置信息。
步骤207a、UE从网络设备接收第一目标配置信息。
需要说明的是，本发明实施例中，UE的小区中获取第一目标配置信息的小区和第一小区可能相同，也可能不相同(即第一目标配置信息用于第一小区的无线链路恢复，但获取第一目标配置信息的小区可以是第一小区，也可以是第一小区之外的其他小区)，本发明实施例不作限定。例如，网络设备在小区C下发第一目标配置信息，第一目标配置信息用于小区B的无线链路恢复过程中的请求过程。
示例性地，在上述步骤207之后，上述步骤201具体可以通过下述步骤201d实现；上述步骤202具体可以通过下述步骤202d实现。
步骤201d、UE根据第一目标配置信息，在第二小区上，向该网络设备发送第一小区的无线链路恢复请求。
步骤202d、网络设备根据第一目标配置信息，在第二小区上，从该UE接收第一小区的无线链路恢复请求。
本发明实施例中，UE根据第一目标配置信息，确定第二小区，并在第二小区上，向该网络设备发送第一小区的无线链路恢复请求，从而可以更好地快速实现无线链路恢复。
可选地，基于上述步骤207，第一目标配置信息包括以下至少一项(一项或多项)：该主小区相关的配置信息，第一辅小区相关的配置信息，该主小区和第一辅小区联合相关的配置信息。
本发明实施例中，该主小区相关的配置信息用于主小区的无线链路恢复，第一辅小区相关的配置信息用于第一辅小区的无线链路恢复，该主小区和第一辅小区联合相关的配置信息用于主小区的无线链路恢复和第一辅小区的无线链路恢复中的至少一个。
本发明实施例中，第一目标配置信息用于第一小区的无线链路恢复，但第一目标配置信息可以配置在任意小区上。例如，该主小区相关的配置信息用于主小区的无线链路恢复，但该主小区相关的配置信息可以配置在主小区、第一辅小区，其他辅小区中的至少一个小区上，具体可以根据实际使用需求确定，本发明实施例不作限定。
示例性地，Pcell BFR RACH配置在Scheduling Scell上,例如对于Pcell BF，该Pcell BFR RACH配置在Scheduling Scell上，UE在Scheduling Scell上发送Pcell BFR RACH来向网络设备发送BFR请求。
可选地，基于上述步骤207a，第一目标配置信息包括以下至少一项(一项或多项)：该网络设备为UE配置的主小区相关的配置信息，该网络设备为UE配置的第一辅小区相关的配置信息，该网络设备为UE配置的该主小区和第一辅小区联合相关的配置信息。
进一步可选地，第一目标配置信息中的每个配置信息包括以下至少一项：对应小区的RACH，该对应小区的调度请求。
示例性地，若第一目标配置信息包括该主小区相关的配置信息，则该主小区相关的配置信息包括以下至少一项：该主小区的RACH，该主小区的调度请求。若第一目标配置信息包括第一辅小区相关的配置信息，则第一辅小区相关的配置信息包括以下至少一项：第一辅小区的RACH，第一辅小区的调度请求。若第一目标配置信息包括该主小区和第一辅小区联合相关的配置信息，则该主小区和第一辅小区联合相关的配置信息包括以下至少一项：该主小区和第一辅小区的RACH，该主小区和第一辅小区的调度请求。
本发明实施例中，提供了多种第一目标配置信息的可能性，可以根据实际使用需求确 定第一目标配置信息，从而可以更好地快速实现无线链路恢复。
可选地，本发明实施例中，在上述步骤202之后，网络设备可以在接受该UE的第一小区的无线链路恢复请求的情况下，向UE发送第一小区的无线链路恢复响应。
示例性地，结合图2，如图3所示，在步骤202之后，本发明实施例提供的无线链路恢复方法还可以包括下述的步骤209-步骤210。
步骤209、网络设备在第三小区上，向该UE发送第一小区的无线链路恢复响应。
步骤210、UE在第三小区上，从该网络设备接收第一小区的无线链路恢复响应。
第三小区为第二小区中的至少一个小区。
可选地，本发明实施例中，网络设备可以在接受该UE的第一小区的无线链路恢复请求的情况下，通过任意资源向UE发送第一小区的无线链路恢复响应。
本发明实施例中，UE在第三小区上，从该网络设备接收第一小区的无线链路恢复响应之后，第一小区的无线链路恢复成功。
可选地，本发明实施例中，网络设备在特定的资源上，向UE发送第一小区的无线链路恢复响应。
示例性地，上述步骤209具体可以通过下述步骤209a实现；上述步骤210具体可以通过下述步骤210a实现。
步骤209a、网络设备在第三小区的第一资源上，向该UE发送第一小区的无线链路恢复响应。
步骤210a、UE在第三小区的第一资源上，从该网络设备接收第一小区的无线链路恢复响应。
本发明实施例中，网络设备在特定的资源上，向UE发送第一小区的无线链路恢复响应，可以更好地快速实现无线链路恢复。
可选地，本发明实施例中，第一资源包括以下至少一项：目标CORESET，目标搜索空间，第三小区包括该主小区时的目标公共搜索空间(Common Search Space，CSS)。
可以理解，本发明实施例中，第一资源包括：第三小区包括该主小区时的目标公共搜索空间，具体指，当且仅当第三小区包括主小区时，第一资源包括目标公共搜索空间。
示例性地，该目标公共搜索空间可以包括type0/0A/1/2/3CSS中的至少一项。
可以理解，本发明实施例中，第一资源可以包括目标CORESET，目标搜索空间，第三小区包括该主小区时的目标公共搜索空间(Common Search Space，CSS)中的一个或多个。
可以理解，针对第三小区中的任意一个小区，网络设备可以在该小区的一种第一资源上，向UE发送第一小区的无线链路恢复响应(UE可以在该小区的一种第一资源上，从该网络设备接收第一小区的无线链路恢复响应)；网络设备也可以在该小区的不同的第一资源上，分别向UE发送第一小区的无线链路恢复响应(UE可以在该小区的不同的第一资源上分别从该网络设备接收第一小区的无线链路恢复响应)。
示例性的，目标事件为RLF，第一小区为第一辅小区，第二小区为主小区，第三小区为主小区。第一辅小区发生RLF，一种情况下，网络设备可以在主小区的目标CORESET上，向UE发送无线链路失败恢复响应；另一种情况下，UE可以在主小区的目标CORESET上和主小区的目标搜索空间上，分别向UE发送无线链路失败恢复响应。
示例性的，目标事件为BF，第一小区为主小区，第二小区为第一辅小区，第三小区为第一辅小区。主小区发生BF，一种情况下，网络设备可以在第一辅小区上的目标SS上，向UE发送第一小区的波束失败恢复响应。
可以理解，针对第三小区中的不同小区，网络设备可以分别在不同小区的同种第一资源上，向UE发送第一小区的无线链路恢复响应(UE可以在不同小区的同种第一资源上，从网络设备接收第一小区的无线链路恢复响应)；网络设备也可以分别在不同小区的不同的第一资源上，向UE发送第一小区的无线链路恢复响应(UE可以在不同小区的不同的第一资源上，从该网络设备接收第一小区的无线链路恢复响应)。
示例性的，目标事件为BF，第一小区为主小区，第二小区为主小区、第一辅小区和第二辅小区，第三小区为主小区和第一辅小区。主小区发生BF，一种情况下，网络设备可以在主小区的目标CORESET上，向UE发送第一小区的波束失败恢复响应，同时网络设备在第一辅小区上的目标CORESET上，向UE发送第一小区的波束失败恢复响应；另一种情况下，网络设备可以在主小区的目标CORESET上，向UE发送第一小区的波束失败恢复响应，同时网络设备在第一辅小区的目标搜索空间上，向UE发送第一小区的波束失败恢复响应。
本发明实施例中，第一资源还可以是其他的可行性资源，本发明实施例不作限定。
本发明实施例中，提供了多种第一资源，有利于快速实现无线链路恢复。
可选地，本发明实施例中，在第一资源包括该目标CORESET的情况下，该目标CORESET为用于恢复第一小区的无线链路的CORESET(记为情况1)；和/或，在第一资源包括该目标搜索空间的情况下，该目标搜索空间为用于恢复第一小区的无线链路的搜索空间(记为情况2)。
可以理解，本发明实施例中，上述情况1和情况2可以同时满足，也可以不同时满足，本发明实施例不作限定。
针对上述情况1：
示例性地，在第一小区包括主小区的情况下，该目标CORESET为用于恢复主小区的无线链路的CORESET，或者，为用于恢复主小区和第一辅小区的无线链路的CORESET。
示例性地，在第一小区包括第一辅小区的情况下，该目标CORESET为用于恢复第一辅小区的无线链路的CORESET，或者，为用于恢复主小区和第一辅小区的无线链路的CORESET。
可以理解，本发明实施例中，在第一资源包括该目标CORESET的情况下，该目标CORESET除了用于恢复第一小区的无线链路之外，还可以用于其他功能。
针对上述情况2：
示例性地，在第一小区包括主小区的情况下，该目标搜索空间为用于恢复主小区的无线链路的搜索空间，或者，为用于恢复主小区和第一辅小区的无线链路的搜索空间。
示例性地，在第一小区包括第一辅小区的情况下，该目标搜索空间为用于恢复第一辅小区的无线链路的搜索空间，或者，为用于恢复主小区和第一辅小区的无线链路的搜索空间。
可以理解，本发明实施例中，在第一资源包括该目标搜索空间的情况下，该目标搜索空间除了用于恢复第一小区的无线链路的搜索空间之外，还可以用于其他功能。
本发明实施例中，该目标CORESET为用于恢复第一小区的无线链路的CORESET；和/或，该目标搜索空间为用于恢复第一小区的无线链路的搜索空间，可以更好地快速实现无线链路恢复。
可选地，本发明实施例中，在第一资源包括该目标CORESET的情况下，目标CORESET关联的至少一个搜索空间。
示例性地，上述步骤209a具体可以通过下述步骤209b实现；上述步骤210a具体可以通过下述步骤210b实现。
步骤209b、网络设备在该目标CORESET关联的至少一个搜索空间上，向该UE发送第一小区的无线链路恢复响应。
步骤210b、UE在该目标CORESET关联的至少一个搜索空间上，从该网络设备接收第一小区的无线链路恢复响应。
可选地，本发明实施例中，该至少一个搜索空间为该目标搜索空间。
可以理解，基于上述步骤209b-步骤210b，目标CORESET可以为专用于第一小区的无线链路的CORESET，也可以为非专用于第一小区的无线链路的CORESET；至少一个搜索空间可以为专用于第一小区的无线链路的搜索空间，也可以为非专用于第一小区的无线链路的搜索空间；目标搜索空间可以为专用于第一小区的无线链路的搜索空间，也可以为非专用于第一小区的无线链路的搜索空间。
本发明实施例中，网络设备在该目标CORESET关联的至少一个搜索空间上，向该UE发送第一小区的无线链路恢复响应，可以更好地快速实现无线链路恢复。
可选地，本发明实施例中，第一小区的无线链路恢复响应承载在目标无线网络临时标识(Radio Network Temporary Identifier，RNTI)加扰的PDCCH上。
进一步可选地，本发明实施例中，该目标RNTI为小区-RNTI(C-RNTI)或者为用于恢复第一小区的无线链路的RNTI(可以称为无线链路恢复RNTI)。
可选地，本发明实施例中，在第一载体为目标MAC CE的情况下，该目标RNTI加扰的PDCCH中的混合自动重传请求(Hybrid Automatic Repeat reQuest，HARQ)进程号(即HARQ Process number，HPN)和目标MAC CE对应的HPN相同。
可选地，本发明实施例中，该目标RNTI加扰的PDCCH调度上行传输。
可选地，本发明实施例中，该目标RNTI加扰的PDCCH的NDI翻转。
可选地，本发明实施例中，第一小区的无线链路恢复响应为随机接入响应消息(Random Access Response，RAR)。
可以理解，在第一载体为目标RACH、目标MAC CE、目标SR中的至少一项的情况下，第一小区的无线链路恢复响应为RAR。
可选地，本发明实施例中，在第一载体为目标RACH的情况下，第一小区的无线链路恢复响应为RAR。
可选地，本发明实施例中，第一小区的无线链路恢复响应还可以为其他形式或内容，本发明实施例不作限定。
示例性地，UE监控网络设备响应，可以包括以下中的至少一种：
1、在Scheduling Scell上监控网络设备响应(C-RNTI PDCCH或RAR)。例如，Pcell发生BF时，在Scheduling Scell上监控C-RNTI PDCCH。
2、在Pcell CSS或Pcell BFR SS上监控网络设备响应(C-RNTI PDCCH或RAR)。例如，Scheduling Scell发生BF时，在Pcell CSS或BFR SS上监控C-RNTI PDCCH或RAR。进一步地，在Pcell CSS#3或者CSS#1或BFR SS上监控C-RNTI PDCCH；或者，在Pcell CSS#1上监控RAR。
3、在其他Scell上监控网络设备响应(C-RNTI PDCCH或RAR)。
4、在Scheduling Scell和Pcell上监控网络设备响应(C-RNTI PDCCH或RAR)。具体包括，UE从Scheduling Scell和Pcell都收到网络设备响应，认为BFR成功；或者，UE从Scheduling Scell和Pcell中的至少一个cell上收到网络设备响应，认为BFR成功。
下面以第一小区的无线链路恢复响应的形式为C-RNTI PDCCH，目标事件为BF，主小区为Pcell、第一辅小区为Scheduling Scell为例进行示例性地说明。假设为UE的Pcell配置了BFR SS，为Scheduling Scell配置了SS，为UE的PUCCH Scell(指示第二辅小区)配置了SS。UE从网络设备接收到C-RNTI PDCCH，则说明BFR成功。进一步地，UE从第二小区中的至少一个小区(第三小区)接收到C-RNTI PDCCH，则说明BFR成功。
示例a、UE从Pcell、Scheduling Scell、PUCCH Scell均收到对应的C-RNTI PDCCH认为BFR成功。
示例b、UE从两个serving cell(Pcell、Scheduling Scell、PUCCH Scell中的两个)都收到对应的C-RNTI PDCCH认为BFR成功。例如，当Pcell的BFR SS和Scheduling Scell上的某个SS(可能是任意一个特定的搜索空间(UE-specific search space，USS)，也可能是为Scheduling Scell配置的BFR SS)都分别收到C-RNTI PDCCH时才认为BFR成功。
示例c、UE从任意一个serving cell收到对应的C-RNTI PDCCH，则认为BFR成功。
针对示例c，例如，UE如果在Pcell的某个公共搜索空间中收到C-RNTI PDCCH，则认为BFR成功。例如，UE如果在Pcell BFR SS中收到C-RNTI PDCCH，则认为BFR成功。例如，UE如果在Scheduling Scell中收到对应的C-RNTI PDCCH，则认为BFR成功。
本发明实施例中，提供了第一小区的无线链路恢复响应为目标RNTI加扰的PDCCH的形式，或第一小区的无线链路恢复响应为RAR的形式，从而可以根据实际使用需求更好地快速实现无线链路恢复。
可选地，本发明实施例中，上述步骤210之前，本发明实施例提供的无线链路恢复方法还可以包括下述的步骤211。
步骤211、UE获取第二目标配置信息。
其中，第二目标配置信息用于恢复第一小区的无线链路。
可选地，本发明实施例中，第二目标配置信息可以专用于恢复第一小区的无线链路；第二目标配置信息也可以既用于恢复第一小区的无线链路，又用于除恢复第一小区的无线链路之外的其他调度。
可以理解，针对第二目标配置信息既用于恢复第一小区的无线链路，又用于除恢复第一小区的无线链路之外的其他调度：一种可能的情况，第二目标配置信息既可以用于恢复第一小区的无线链路，又可以用于其他调度。另一种可能的情况，第二目标配置信息中包括用于恢复第一小区的无线链路的配置信息，还包括用于其他调度的配置信息。
本发明实施例中，UE获取第二目标配置信息之后，可以根据第二目标配置信息，在第二小区上，从该网络设备接收第一小区的无线链路恢复响应，从而可以更好地快速实现 无线链路恢复。
可选地，第二目标配置信息可以是UE自己确定的，也可以是网络设备为UE预配置的，也可以是协议规定的，还可以是其他的可行性情况，具体可以根据实际使用需求确定，本发明实施例不作限定。
示例性的，在第二目标配置信息是网络设备为UE预配置的情况下，在上述步骤211之前，本发明实施例提供的无线链路恢复方法还可以包括下述的步骤212；上述步骤211具体地可以通过下述步骤211a实现。
步骤212、网络设备向该UE发送第二目标配置信息。
步骤211a、UE从网络设备接收第二目标配置信息。
需要说明的是，本发明实施例中，UE的小区中获取第二目标配置信息的小区和第一小区可能相同，也可能不相同(即第二目标配置信息用于第一小区的无线链路恢复，但获取第二目标配置信息的小区可以是第一小区，也可以是第一小区之外的其他小区)，本发明实施例不作限定。例如，网络设备在小区C下发第二目标配置信息，第二目标配置信息用于小区B的无线链路恢复过程中的响应过程。
可选地，本发明实施例中，上述步骤209具体可以通过下述步骤209c实现；上述步骤210具体可以通过下述步骤210c实现。
步骤209c、网络设备根据第二目标配置信息，在第三小区上，向该UE发送第一小区的无线链路恢复响应。
步骤210c、UE根据第二目标配置信息，在第三小区上，从该网络设备接收第一小区的无线链路恢复响应。
本发明实施例中，UE根据第二目标配置信息，在第二小区上，从该网络设备接收第一小区的无线链路恢复响应，从而可以更好地快速实现无线链路恢复。
可选地，基于上述步骤211，第二目标配置信息包括以下至少一项(一项或多项)：该主小区相关的配置信息，第一辅小区相关的配置信息，该主小区和第一辅小区联合相关的配置信息。
可选地，基于上述步骤211a，第二目标配置信息包括以下至少一项(一项或多项)：该网络设备为UE配置的该主小区相关的配置信息，该网络设备为UE配置的第一辅小区相关的配置信息，该网络设备为UE配置的该主小区和第一辅小区联合相关的配置信息。
可选地，本发明实施例中，第二目标配置信息中的每个配置信息包括以下至少一项：对应小区的CORESET，该对应小区的搜索空间。
示例性地，若第二目标配置信息包括该主小区相关的配置信息，则该主小区相关的配置信息包括以下至少一项：该主小区的CORESET，该主小区的搜索空间。若第二目标配置信息包括第一辅小区相关的配置信息，则第一辅小区相关的配置信息包括以下至少一项：第一辅小区的CORESET，第一辅小区的搜索空间。若第二目标配置信息包括该主小区和第一辅小区联合相关的配置信息，则该主小区和第一辅小区联合相关的配置信息包括以下至少一项：该主小区和第一辅小区的CORESET，该主小区和第一辅小区的搜索空间。
本发明实施例中，提供了多种第二目标配置信息的可能性，可以根据实际使用需求确定第二目标配置信息，从而可以更好地快速实现无线链路恢复。
进一步可选地，本发明实施例中，第二目标配置信息用于传输调度该对应小区上传输 的PDCCH。
可以理解，第二目标配置信息除了用于恢复第一小区的无线链路之外，还可以用于传输调度该对应小区上传输的PDCCH。
示例性地，若第二目标配置信息包括该主小区相关的配置信息，则该主小区相关的配置信息可以用于传输调度该主小区上传输的PDCCH。若第二目标配置信息包括第一辅小区相关的配置信息，则第一辅小区相关的配置信息可以用于传输调度第一辅小区上传输的PDCCH。若第二目标配置信息包括第二辅小区相关的配置信息，则第二辅小区相关的配置信息可以用于传输调度第二辅小区上传输的PDCCH。若第二目标配置信息包括该主小区和第一辅小区联合相关的配置信息，则该主小区和第一辅小区联合相关的配置信息可以用于传输调度该主小区和第一辅小区上传输的PDCCH。
本发明实施例中，对应小区的CORESET和该对应小区的搜索空间中的至少一项，可以称为对应小区的控制相关资源，则该对应小区的控制相关资源可以为专用于恢复第一小区无线链路的资源，也可以为用于传输调度对应小区上传输的PDCCH的资源。
本发明实施例中，第二目标配置信息用于传输调度该对应小区上传输的PDCCH，则第二配置信息既可以用于恢复第一小区的无线链路，又可以用于其他调度，从而可以增加第二目标配置信息的利用率。
下面对第一小区为主小区、第一小区为第一辅小区、第一小区为主小区和第一辅小区三种情况下的一些方案进行示例性地说明。其中，目标事件为BF，主小区为Pcell、第一辅小区为Scheduling Scell，第二辅小区为PUCCH Scell，BFR SS为专用于BFR的搜索空间，BFR CORESET为专用于BFR的控制资源集，BFR RACH为专用于BFR的随机接入信道。
情况一：Pcell发生BF
示例1、基于RACH进行BFR
方案1、BFR RACH资源配置在Pcell上，Pcell上没有配置BFR SS和BFR CORESET资源
1、在Pcell发生BF的情况下，UE在Pcell上，通过BFR RACH向网络设备发送BFR请求。
2、网络设备在Pcell的某个公共搜索空间中发送C-RNTI PDCCH(即BFR响应)。
其中，该公共搜索空间可以是type0/0A/1/2/3CSS中的至少一项。
3、UE如果在Pcell的某个公共搜索空间中接收到C-RNTI PDCCH，则认为Pcell BFR流程成功结束。
方案2、BFR RACH资源配置在Pcell上，BFR SS和BFR CORESET资源配置在Scheduling Scell上
1、网络设备为Scheduling Scell配置用于Pcell BFR的BFR SS和BFR CORESET中的至少一项。
2、在Pcell发生BF的情况下，UE在Pcell上，通过BFR RACH向网络设备发送BFR请求。
3、网络设备在Scheduling Scell上发送C-RNTI PDCCH，具体包括以下至少一项：
(a)在Scheduling Scell上BFR SS中发送C-RNTI PDCCH；
(b)在Scheduling Scell上BFR CORESET关联的至少一个SS中发送C-RNTI PDCCH。
针对上述3(b)，进一步可选地，BFR CORESET关联且只关联BFR SS(即该至少一个SS为BFR SS)。
4、UE收到C-RNTI PDCCH则认为Pcell BFR流程成功结束，包括以下至少一项：
(a)UE在Scheduling Scell上BFR SS中收到C-RNTI PDCCH，则认为Pcell BFR流程成功结束(基于上述3(a)的方案)；
(b)UE在Scheduling Scell上BFR CORESET关联的至少一个SS中收到C-RNTI PDCCH，则认为Pcell BFR流程成功结束(基于上述3(b)的方案)。
针对上述4(b)，进一步可选地，在BFR CORESET关联的BFR SS(即该至少一个SS为BFR SS)中收到C-RNTI PDCCH，则认为Pcell BFR流程成功结束。
方案3、BFR RACH、BFR SS和BFR CORESET资源均配置在Scheduling Scell
1、网络设备为Scheduling Scell配置用于Pcell BFR的BFR RACH，以及为Scheduling Scell配置用于Pcell BFR的BFR SS和BFR CORESET中的至少一项。
2、在Pcell发生BF的情况下，UE在Scheduling Scell上，通过BFR RACH向网络设备发送BFR请求。
3、网络设备在Scheduling Scell上发送C-RNTI PDCCH，包括以下至少一项：
(a)在Scheduling Scell上BFR SS中发送C-RNTI PDCCH。
(b)在Scheduling Scell上BFR CORESET关联的至少一个SS中发送C-RNTI PDCCH。
针对上述3(b)，进一步可选地，BFR CORESET关联且只关联BFR SS。
4、UE收到C-RNTI PDCCH则认为Pcell BFR流程成功结束，包括以下至少一项：
(a)在Scheduling Scell上的BFR SS中收到C-RNTI PDCCH，则认为Pcell BFR流程成功结束(基于上述3(a)的方案)；
(b)在Scheduling Scell上BFR CORESET关联的至少一个SS中收到C-RNTI PDCCH，则认为Pcell BFR流程成功结束(基于上述3(b)的方案)。
针对上述4(b)，进一步可选地，在BFR CORESET关联的BFR SS(即至少一个SS为BFR SS)中收到C-RNTI PDCCH，则认为Pcell BFR流程成功结束。
示例2、基于MAC CE进行BFR
方案4、引入专用的SR和MAC CE，或者，重用Rel-16中的Scell BFR SR和Scell BFR MAC CE，用于Pcell BFR
1、网络设备配置用于Pcell BFR的一个或者多个SR资源。
(a)例如，网络设备为UE配置一个SR资源ID，该ID对应的SR资源可以用于Pcell BFR流程。
(b)可选地，在Pcell、Scheduling Scell、PUCCH Scell中的至少一个上，配置包含上述用于Pcell BFR的SR资源。
(c)可选地，上述SR资源为专用于Pcell BFR的SR资源(简称为Pcell BFR SR)，或者为专用于Pcell和Scheduling Scell BFR的SR资源。
(d)可选地，上述SR为用于任意辅小区(简称为Scell)BFR的SR资源。则该SR为Scell BFR SR，本发明实施例中，既可以用于Scheduling Scell BFR中，也可以用于Pcell  BFR中。
2、在Pcell发生BF的情况下，(a)如果UE有上行资源，UE在该上行资源上，通过BFR MAC CE向网络设备发送BFR请求；(b)否则(如果UE没有上行资源)，UE向网络设备发送SR用于BFR流程。
3、针对上述2(b)的方案，如果UE发送的是Pcell BFR SR,网络设备接收到该SR可以知道是Pcell发生了BF,从而在Pcell之外的其他Serving cell上发送UL grant，随后，UE在该UL grant分配的上行资源上，通过BFR MAC CE向网络设备发送BFR请求。
如果UE发送的是Scell BFR SR，网络设备接收到该SR可以知道有某个或者某些小区发生了BF(但不清楚具体是哪个或哪些小区发生了BF)，网络设备在除Pcell和Scheduling Scell之外的其他Serving cell上发送UL grant，随后，UE在该UL grant分配的上行资源上，通过BFR MAC CE向网络设备发送BFR请求。
4、可选地，上述UL grant在Scheduling Scell上传输。
5、可选地，上述BFR MAC CE(专用的MAC CE或Scell BFR MAC CE)和Pcell关联。
(a)可选地，该BFR MAC CE中携带Pcell index，或者该BFR MAC CE中携带特殊值(特殊值用于指示Pcell)。
(b)可选地，该BFR MAC CE中携带Scheduling Scell index。
(c)可选地，设计一种Pcell BFR专用的MAC CE，在存在candidate beam的情况下，该MAC CE中可以携带candidate beam index和指示UE检测到candidate beam的指示信息中的至少一项；在不存在candidate beam的情况下，该MAC CE中可以携带指示UE未检测到candidate beam的指示信息。
6、网络设备收到上述BFR MAC CE后可以知道发生了BF，发送C-RNTI PDCCH。
7、UE接收到C-RNTI PDCCH，则认为Pcell BFR流程成功结束。
示例3、基于SR进行BFR
方案5、引入专用的SR用于Pcell BFR
1、网络设备配置用于Pcell BFR的一个或者多个SR资源。
(a)例如，网络设备为UE配置一个SR资源ID，该ID对应的SR资源可以用于Pcell BFR流程。
(b)可选地，在Pcell、Scheduling Scell、PUCCH Scell中的至少一个上，配置包含上述用于Pcell BFR的SR资源。
(c)可选地，上述SR资源为专用于Pcell BFR的SR资源(简称为Pcell BFR SR)，或者为专用于Pcell和Scheduling Scell BFR的SR资源。
(d)可选地，至少一个上述SR资源中的每个SR资源与至少一个candidate beam(RS)存在关联的关系。
(e)可选的，至少一个上述SR资源表示UE没有检测到candidate beam(RS)，或者没有关联candidate beam(RS)。
2、在Pcell发生BF的情况下，UE通过SR，向网络设备发送BFR请求。
(a)可选地，UE选择至少一个candidate beam(RS)，然后通过该至少一个candidate  beam(RS)对应的SR，向网络设备发送BFR请求。
例如，UE评估candidate beam SSB1和SSB2，其中SSB1评估结果满足阈值，UE通过SSB1对应的SR，向网络设备发送BFR请求。
(b)可选地，至少一个SR资源表示UE没有检测到candidate beam(RS)，或者没有关联candidate beam(RS)。
例如，评估的candidate beam都不满足要求，或者UE没有candidate beam，则通过该SR，向网络设备发送BFR请求。
3、网络设备接收到上述SR后可以知道是Pcell发生了BF，发送C-RNTI PDCCH。
4、UE接收到C-RNTI PDCCH，则认为Pcell BFR流程成功结束。
情况二：Scheduling Scell发生BF
示例4、基于RACH进行BFR
方案6、BFR RACH配置在Scheduling Scell上，BFR SS和BFR CORESET资源均配置在Pcell(或Scheduling Scell)上
1、网络设备为Scheduling Scell配置用于Scheduling Scell BFR的BFR RACH，以及为Pcell(或Scheduling Scell)配置用于Scheduling Scell BFR的BFR SS和BFR CORESET中的至少一项。
2、在Scheduling Scell发生BF的情况下，UE在Scheduling Scell上，通过BFR RACH向网络设备发送BFR请求。
3、网络设备在Pcell(或Scheduling Scell)上发送C-RNTI PDCCH，具体包括以下至少一项：
(a)在Pcell(或Scheduling Scell)上BFR SS中发送C-RNTI PDCCH；
(b)在Pcell(或Scheduling Scell)上BFR CORESET关联的至少一个SS中发送C-RNTI PDCCH。
针对上述3(b)，进一步可选地，BFR CORESET关联且只关联BFR SS(即该至少一个SS为BFR SS)。
4、UE收到C-RNTI PDCCH则认为Scheduling Scell BFR流程成功结束，包括以下至少一项：
(a)UE在Pcell(或Scheduling Scell)上的BFR SS中收到C-RNTI PDCCH，则认为Scheduling Scell BFR流程成功结束(基于上述3(a)的方案)；
(b)UE在Pcell(或Scheduling Scell)上BFR CORESET关联的至少一个SS中收到C-RNTI PDCCH，则认为Scheduling Scell BFR流程成功结束(基于上述3(b)的方案)。
针对上述4(b)，进一步可选地，在BFR CORESET关联的BFR SS(即该至少一个SS为BFR SS)中收到C-RNTI PDCCH则认为Scheduling Scell BFR流程成功结束。
示例5、基于MAC CE进行BFR
方案7、引入专用的SR和MAC CE，或者，重用Rel-16的Scell BFR SR和Scell BFR MAC CE，用于Scheduling Scell BFR
1、网络设备配置用于Scheduling Scell BFR的一个或者多个SR资源。
(a)例如，网络设备为UE配置一个SR资源ID，该ID对应的SR资源可以用于Scheduling Scell BFR流程。
(b)可选地，在Pcell、Scheduling Scell、PUCCH Scell中的至少一个上，配置包含上述用于Scheduling Scell BFR的SR资源。
(c)可选地，上述SR为专用于Scheduling Scell BFR的SR资源(简称为Scheduling Scell BFR SR)，或者为专用于Pcell和Scheduling Scell BFR的SR资源。
(d)可选地，上述SR为用于Serving cell BFR的SR资源。则该SR为Scell BFR SR，本发明实施例中，既可以用于Scheduling Scell BFR中，也可以用于Pcell BFR中。
2、在Scheduling Scell发生BF的情况下，(a)如果UE有上行资源，UE在该上行资源上，通过BFR MAC CE向网络设备发送BFR请求；(b)否则(如果UE没有上行资源)，UE发送SR用于BFR流程。
3、针对上述2(b)的方案，如果UE发送的是Scheduling Scell BFR SR,网络设备收到该SR可以知道是Scheduling Scell发生了BF,从而在Scheduling Scell之外的其他Serving cell上发送UL grant，随后，UE在该UL grant分配的上行资源上，通过BFR MAC CE向网络设备发送BFR请求。
如果UE发送的是Scell BFR SR,网络设备接收到该SR可以知道有某个或者某些小区发生了BF(但不清楚具体是哪个或哪些小区发生了BF)，网络设备在除Pcell和Scheduling Scell之外的其他Serving cell上发送UL grant，随后，UE在该UL grant分配的上行资源上，通过BFR MAC CE向网络设备发送BFR请求。
4、可选地，上述UL grant在Pcell上传输。
5、可选地，上述BFR MAC CE(专用的MAC CE或Scell BFR MAC CE)和Scheduling Scell关联。
(a)可选地，该BFR MAC CE中携带Scheduling Scell index，或者该BFR MAC CE中携带特殊值(特殊值用于指示Scheduling Scell)。
(b)可选地，该BFR MAC CE中携带Pcell index。
(c)可选地，设计一种Scheduling Scell BFR专用的MAC CE，在存在candidate beam的情况下，该MAC CE中可以携带candidate beam index和指示UE检测到candidate beam的指示信息中的至少一项；在不存在candidate beam的情况下，该MAC CE中可以携带指示UE未检测到candidate beam的指示信息。
6、网络设备收到上述Scheduling Scell MAC CE后可以知道是发生了BF，发送C-RNTI PDCCH。
7、UE接收到C-RNTI PDCCH，则认为Scheduling Scell BFR流程成功结束。
示例6、基于SR进行BFR
方案8、引入专用的SR用于Scheduling Scell BFR
1、网络设备配置用于Scheduling Scell BFR的一个或者多个SR资源。
(a)例如，网络设备为UE配置一个SR资源ID，该ID对应的SR资源可以用于Scheduling Scell BFR流程。
(b)可选地，在Pcell、Scheduling Scell、PUCCH Scell中的至少一个上，配置包含上 述用于Scheduling Scell BFR的SR资源。
(c)可选地，上述SR资源为专用于Scheduling Scell BFR的SR资源(简称为Scheduling Scell BFR SR)，或者为专用于Pcell和Scheduling Scell BFR的SR资源。
(d)可选地，至少一个上述SR资源中的每个SR资源与至少一个candidate beam(RS)存在关联的关系。
(e)可选的，至少一个上述SR资源表示UE没有检测到candidate beam(RS)，或者没有关联candidate beam(RS)。
2、在Scheduling Scell发生BF的情况下，UE通过SR，向网络设备发送BFR请求。
(a)可选地，UE选择至少一个candidate beam(RS)，然后通过该至少一个candidate beam(RS)对应的SR，向网络设备发送BFR请求。
例如，UE评估candidate beam SSB1和SSB2，其中SSB1评估结果满足阈值，UE通过SSB1对应的SR，向网络设备发送BFR请求。
(b)可选地，至少一个SR资源表示UE没有检测到candidate beam(RS)，或者没有关联candidate beam(RS)。
例如，评估的candidate beam都不满足要求，或者UE没有candidate beam，则通过该SR，向网络设备发送BFR请求。
3、网络设备接收到上述SR后可以知道是Scheduling Scell发生了BF，发送C-RNTI PDCCH。
4、UE接收到C-RNTI PDCCH，则认为Scheduling Scell BFR流程成功结束。
情况三、Pcell和Scheduling Scell发生BF
示例7、基于RACH进行BFR
方案9、
1、网络设备为Pcell配置用于Pcell和Scheduling Scell BFR的BFR RACH，以及为Pcell配置用于Pcell和Scheduling Scell BFR的BFR SS和BFR CORESET中的至少一项。
2、在Pcell和Scheduling Scell发生BF的情况下，UE在Pcell scell上，通过BFR RACH向网络设备发送BFR请求。
3、网络设备在Pcell scell上BFR SS中发送C-RNTI PDCCH。
4、UE在BFR SS中收到C-RNTI PDCCH，则认为Pcell和Scheduling Scell BFR流程成功结束。
方案10、
1、网络设备为Scheduling Scell配置用于Pcell和Scheduling Scell BFR的BFR RACH，以及为Scheduling Scell配置用于Pcell和Scheduling Scell BFR的BFR SS和BFR CORESET中的至少一项。
2、在Pcell和Scheduling Scell发生BF的情况下，UE在Scheduling Scell上，通过BFR RACH向网络设备发送BFR请求。
3、网络设备在Scheduling Scell上BFR SS中发送C-RNTI PDCCH。
4、UE在BFR SS中收到C-RNTI PDCCH，则认为Pcell和Scheduling Scell BFR流程成功结束。
示例8、基于MAC CE进行BFR
方案11、引入专用SR和MAC CE，或者重用Rel-16的Scell BFR SR和Scell BFR MAC CE，用于Pcell和Scheduling Scell BFR
1、网络设备配置用于Pcell和Scheduling Scell BFR的一个或者多个SR资源。
(a)例如，网络设备为UE配置一个SR资源ID，该ID对应的SR资源可以用于Pcell和Scheduling Scell BFR流程。
(b)可选地，在Pcell、Scheduling Scell、PUCCH Scell中的至少一个上，配置包含上述用于Pcell和Scheduling Scell BFR的SR资源。
(c)当Pcell和Scheduling Scell发生BF时，(a)如果UE有上行资源，UE在该上行资源上，通过BFR MAC CE向网络设备发送BFR请求；(b)否则(如果UE没有上行资源)，UE发送SR用于BFR流程。
3、针对上述2(b)的方案，如果UE发送的是Pcell和Scheduling Scell BFR对应的SR,网络设备收到该SR可以知道是Pcell和Scheduling Scell发生了BF,从而在Pcell和Scheduling Scell之外的其他serving cell发送UL grant，随后，UE在该UL grant分配的上行资源上，通过BFR MAC CE向网络设备发送BFR请求。
如果UE发送的是Scell BFR SR,网络设备收到该SR可以知道有某个或者某些小区发生了BF(但不清楚具体是哪个或哪些小区发生了BF)，网络设备在除Pcell和Scheduling Scell之外的其他Serving cell上发送UL grant，随后，UE在该UL grant分配的上行资源上，通过BFR MAC CE向网络设备发送BFR请求。
4、可选地，上述BFR MAC CE(专用的MAC CE或Scell BFR MAC CE)，与Pcell和Scheduling Scell关联。
(a)可选地，该MAC CE中携带特殊值，该特殊值对应Pcell和Scheduling Scell。
(b)可选地，该MAC CE中携带Pcell和Scheduling Scell的cell index。
(c)可选地，设计一种Pcell和Scheduling Scell BFR专用的MAC CE，在存在candidate beam的情况下，该MAC CE中可以携带candidate beam index和指示UE检测到candidate beam的指示信息中的至少一项；在不存在candidate beam的情况下，该MAC CE中可以携带指示UE未检测到candidate beam的指示信息。
6、网络设备接收到上述MAC CE后可以知道是发生了BF，发送C-RNTI PDCCH。
7、UE接收到C-RNTI PDCCH，则认为Pcell和Scheduling Scell BFR流程成功结束。
示例9、基于SR进行BFR
方案12、引入专用SR用于Pcell和Scheduling Scell BFR
1、网络设备配置用于Pcell和Scheduling Scell BFR的一个或者多个SR资源。
(a)例如，网络设备为UE配置一个SR资源ID，该ID对应的SR资源可以用于Pcell和Scheduling Scell BFR流程。
(b)可选地，在Pcell、Scheduling Scell、PUCCH Scell中的至少一个上，配置包含上述用于Pcell和Scheduling Scell BFR的SR资源。
(c)可选地，上述SR为专用于Pcell和scheduling Scell BFR的SR资源。
(d)可选地，至少一个上述SR资源中的每个SR资源与至少一个candidate beam(RS)存在关联的关系。
(e)可选的，至少一个上述SR资源表示UE没有检测到candidate beam(RS)，或者没有关联candidate beam(RS)。
2、在Pcell和Scheduling Scell发生BF的情况下，UE通过SR，向网络设备发送BFR请求。
(a)可选地，UE选择至少一个candidate beam(RS)，然后通过该至少一个candidate beam(RS)对应的SR，向网络设备发送BFR请求。
例如，UE评估candidate beam SSB1和SSB2，其中SSB1评估结果满足阈值，UE发送SSB1对应的SR，向网络设备发送BFR请求。
(b)可选地，至少一个SR资源表示UE没有检测到candidate beam(RS)，或者没有关联candidate beam(RS)。
例如，评估的candidate beam都不满足要求，或者UE没有candidate beam，则通过该SR，向网络设备发送BFR请求。
3、网络设备收到上述SR后可以知道是Pcell和Scheduling Scell发生了BF，发送C-RNTI PDCCH。
4、UE接收到C-RNTI PDCCH，则认为Pcell和Scheduling Scell BFR流程成功结束。
需要说明的是，上述示例1至示例9中的每个步骤都是可选的，具体可以根据实际情况确定，本发明实施例不作限定。
可选地，本发明实施例中，在上述步骤201之前，本发明实施例提供的无线链路恢复方法还可以包括下述的步骤213。
步骤213、UE获取目标检测资源。
其中，在该目标事件为BF的情况下，该目标检测资源用于评估或测量波束，在该目标事件为RLF的情况下，该目标检测资源用于评估或测量无线链路。
本发明实施例中，UE获取目标检测资源之后，可以根据目标检测资源进行检测，并根据检测结果确定是否向高层发送用于指示目标事件的指示信息。
可选地，本发明实施例中，目标检测资源可以是UE自己确定的，也可以是网络设备为UE预配置的，也可以是协议规定的，还可以是其他的可行性情况，具体可以根据实际使用需求确定，本发明实施例不作限定。
可选地，在目标检测资源是网络设备为UE预配置的情况下，在步骤213之前，本发明实施例提供的无线链路恢复方法还可以包括下述的步骤214；上述步骤213具体可以通过下述步骤213a实现。
步骤214、网络设备向该UE发送目标检测资源。
步骤213a、UE从网络设备接收目标检测资源。
可选地，在上述步骤213或步骤213a之后，本发明实施例提供的无线链路恢复方法还可以包括下述的步骤215。
步骤215、UE在目标检测资源的测量结果满足目标条件的情况下，该UE的物理层向该UE的高层发送目标指示信息。
其中，该目标指示信息用于指示该目标事件；在该目标事件为BF的情况下，该目标 检测资源用于评估或测量波束，在该目标事件为RLF的情况下，该目标检测资源用于评估或测量无线链路。
可以理解，本发明实施例中，在该目标事件为BF的情况下，UE获取目标检测资源之后，根据该目标检测资源评估(或测量)第一小区的波束的质量或强度，然后在测量结果满足目标条件的情况下，UE的物理层向UE的高层发送指示目标事件的目标指示信息。
可以理解，本发明实施例中，在该目标事件为RLF的情况下，UE获取目标检测资源之后，根据该目标检测资源评估(或测量)第一小区的无线链路的质量或强度，然后在测量结果满足目标条件的情况下，UE的物理层向UE的高层发送指示目标事件的目标指示信息。
本发明实施例中，UE根据目标检测资源的测量结果确定是否向高层发送用于指示目标事件的目标指示信息，进而UE高层可以根据目标指示信息判断，UE在第一小区是否发生目标事件，从而可以及时实现无线链路的恢复。
可选地，本发明实施例中，该目标检测资源包括以下至少一项：为该主小区配置的第一检测资源，为第一辅小区配置的第二检测资源。
可以理解，第一检测资源可以包括至少一个检测资源，第二检测资源也可以包括至少一个检测资源，具体根据实际使用需求确定，本发明实施例不作限定。
可以理解，本发明实施例中，该目标检测资源可以是为该主小区配置的第一检测资源，也可以是为第一辅小区配置的第二检测资源，也可以是为该主小区配置的第一检测资源和为第一辅小区配置的第二检测资源。该目标检测资源还可以是其他的可行性资源，本发明实施例不作限定。
可以理解，本发明实施例中，在该目标检测资源是为该主小区配置的第一检测资源和为第一辅小区配置的第二检测资源的情况下，可以联合检测或评估第一检测资源和第二检测资源，也可以单独检测或评估第一检测资源，也可以单独检测或评估第二检测资源，具体可以根据实际使用需求确定，本发明实施例不作限定。
可选地，本发明实施例中，该目标条件包括以下至少一项：在该目标检测资源包括第一检测资源的情况下，第一检测资源中的X个资源的测量结果大于或等于第二阈值；在该目标检测资源包括第二检测资源的情况下，第二检测资源中的Y个资源的测量结果大于或等于第三阈值；在该目标检测资源包括第一检测资源和第二检测资源的情况下，第一检测资源和第二检测资源中的Z个资源的测量结果大于或等于对应阈值；X、Y、Z均为正整数。
可以理解，本发明实施例中，在目标检测资源为第一检测资源的情况下(即单独检测或评估第一检测资源的情况)，目标条件为第一检测资源中的X个资源的测量结果大于或等于第二阈值。在目标检测资源为第二检测资源的情况下(即单独检测或评估第二检测资源的情况)，目标条件为第二检测资源中的Y个资源的测量结果大于或等于第三阈值。在目标检测资源为第一检测资源和第二检测资源的情况下(即联合检测或评估第一检测资源和第二检测资源的情况)，目标条件为第一检测资源中的X个资源的测量结果大于或等于第二阈值，且第二检测资源中的Y个资源的测量结果大于或等于第三阈值；或者，目标条件为第一检测资源和第二检测资源中的Z个资源的测量结果大于或等于对应阈值。
其中，在第一检测资源和第二检测资源中的Z个资源的测量结果大于或等于对应阈值情况下，若Z个资源中包括第一检测资源中的资源(以下记为第一资源)，则对应阈值为 第一资源对应的阈值(例如上述第二阈值)，若Z个资源中包括第二检测资源中的资源(以下记为第二资源)，则对应阈值为第二资源对应的阈值(例如上述第三阈值)。
需要说明的是，第一检测资源中的X个资源，包括：第一检测资源中的部分或全部资源。第二检测资源中的Y个资源，包括：第二检测资源中的部分或全部资源。第一检测资源和第二检测资源中的Z个资源，包括第一检测资源和第二检测资源中的部分或全部资源(具体地，可以该Z个资源中的一部分属于第一检测资源，另一部分属于第二检测资源；也可以该Z个资源中的全部属于第一检测资源；也可以该Z个资源中的全部属于第二检测资源)。
本发明实施例中，第二阈值与第三阈值可以相同，也可以不相同，本发明实施例不作限定。第二阈值和第三阈值的取值可以根据实际使用需求确定，本发明实施例不作限定。
本发明实施例中，提供了多种目标检测资源的可能情况，而且针对不同的目标检测资源提供了不同的目标条件，如此可以根据实际使用需求确定需要的目标检测资源和目标条件，从而可以更好地快速实现无线链路恢复。
可选地，本发明实施例中，在该目标检测资源包括第一检测资源和第二检测资源的情况下，该目标指示信息的发送周期为：第一检测资源的检测周期和第二检测资源的检测周期中的最小值。
可以理解，本发明实施例中，在该目标检测资源包括第一检测资源和第二检测资源的情况下，若第一检测资源的检测周期小于或等于第二检测资源的检测周期，则目标指示信息的发送周期为第一检测资源的检测周期；若第一检测资源的检测周期大于第二检测资源的检测周期，则目标指示信息的发送周期为第二检测资源的检测周期。
示例性地，在Pcell上配置了2个同步信号块(Synchronization Signal and PBCH block，SSB)用于检测BF，在Scheduling Scell上配置了2个信道状态信息参考信号(Channel State Information Reference Signal，CSI-RS)用于检测BF，这2个SSB和2个CSI-RS的周期中的最小值为上报BF指示的周期。
可选地，在上述步骤215之后，本发明实施例提供的无线链路恢复方法还可以包括下述的步骤216。
步骤216、UE在预设时长内，向高层发送该目标指示信息的次数大于或等于第四阈值的情况下，确定第一小区发生目标事件。
可以理解，本发明实施例中，UE在一定时间内容，向高层发送目标指示信息的次数达到预设阈值的情况下，UE可以确定第一小区发生目标事件。
本发明实施例中，第四阈值可以根据实际使用需求确定，本发明实施例不作限定。
下面以目标事件为BF，目标检测资源为第一检测资源和/或第二检测资源(其中，第一检测资源和第二检测资源均为BF检测资源，第一检测资源为在Pcell上配置的Q个failure Detection Resources；第二检测资源为在Scheduling Scell上配置的P个failure Detection Resources)，主小区为Pcell，第一辅小区为Scheduling Scell，目标指示信息为BF指示为例进行示例性地说明。
示例A
当第一检测资源和第二检测资源(中的全部资源)的测量结果均不满足对应的阈值时，UE的物理层向高层发送BF指示；进一步可选地，当UE的物理层向高层发送BF指示的 次数大于或等于第四阈值时，UE确定发生BF。
若上述第一检测资源和第二检测资源用于联合评估(或测量)Pcell的波束，则当Q个failure Detection Resources的测量结果(或评估质量)均低于第二阈值，且P个failure Detection Resources的测量结果(或评估质量)都低于第三阈值时，UE的物理层向高层发送Pcell的BF指示；当在预设时长内发送了S次Pcell的BF指示后，UE确定Pcell发生BF。
若上述第一检测资源和第二检测资源用于联合评估(或测量)Scheduling Scell的波束，则当Q个failure Detection Resources的测量结果(或评估质量)均低于第二阈值，且P个failure Detection Resources的测量结果(或评估质量)都低于第三阈值时，UE的物理层向高层发送Scheduling Scell的BF指示；当在预设时长内发送了S次Scheduling Scell的BF指示后，UE确定Scheduling Scell发生BF。
若上述第一检测资源和第二检测资源用于联合评估(或测量)Pcell和Scheduling cell的波束，则当Q个failure Detection Resources的测量结果(或评估质量)均低于第二阈值，且P个failure Detection Resources的测量结果(或评估质量)都低于第三阈值时，UE的物理层向高层发送Pcell和Scheduling Scell的BF指示；当在预设时长内发送了S次Pcell和Scheduling Scell的BF指示后，UE确定Pcell和Scheduling Scell发生BF。
示例B
当第一检测资源和第二检测资源中的任意一个检测资源(第一检测资源和/或第二检测资源)的测量结果均不满足对应的阈值时，UE的物理层向高层发送BF指示；进一步可选地，当UE的物理层向高层发送BF指示的次数大于或等于第四阈值时，UE确定发生BF。
若目标检测资源为第一检测资源，第一检测资源用于评估(或测量)Pcell的波束，则当Q个failure Detection Resources的测量结果(或评估质量)均低于第二阈值时，UE的物理层向高层发送Pcell的BF指示；当在预设时长内发送了S次Pcell的BF指示后，UE确定Pcell发生BF。
若目标检测资源为第一检测资源，第一检测资源用于评估(或测量)Scheduling Scell的波束，则当Q个failure Detection Resources的测量结果(或评估质量)均低于第二阈值时，UE的物理层向高层发送Scheduling Scell的BF指示；当在预设时长内发送了S次Scheduling Scell的BF指示后，UE确定Scheduling Scell发生BF。
若目标检测资源为第一检测资源，第一检测资源用于评估(或测量)Pcell和Scheduling Scell的波束，则当Q个failure Detection Resources的测量结果(或评估质量)均低于第二阈值时，UE的物理层向高层发送Pcell和Scheduling Scell的BF指示；当在预设时长内发送了S次Pcell和Scheduling Scell的BF指示后，UE确定Pcell和Scheduling Scell发生BF。
若目标检测资源为第二检测资源，第二检测资源用于评估(或测量)Pcell的波束，则当P个failure Detection Resources的测量结果(或评估质量)都低于第三阈值时，UE的物理层向高层发送Pcell的BF指示；当在预设时长内发送了S次Pcell的BF指示后，UE确定Pcell发生BF。
若目标检测资源为第二检测资源，第二检测资源用于评估(或测量)Scheduling Scell的波束，则当P个failure Detection Resources的测量结果(或评估质量)都低于第三阈值时，UE的物理层向高层发送Scheduling Scell的BF指示；当在预设时长内发送了S次 Scheduling Scell的BF指示后，UE确定Scheduling Scell发生BF。
若目标检测资源为第二检测资源，第二检测资源用于评估(或测量)Pcell和Scheduling Scell的波束，则当P个failure Detection Resources的测量结果(或评估质量)都低于第三阈值时，UE的物理层向高层发送Pcell和Scheduling Scell的BF指示；当在预设时长内发送了S次Pcell和Scheduling Scell的BF指示后，UE确定Pcell和Scheduling Scell发生BF。
本发明实施例提供了一种无线链路恢复方法，若UE的第一小区(包括以下至少一项：该主小区，第一辅小区(调度主小区的辅小区))发生目标事件(BF或RLF)，在该UE的第二小区(包括以下至少一项：该主小区，第一辅小区，第二辅小区(该UE的辅小区中除第一辅小区之外的辅小区))上，向网络设备发送第一小区的无线链路恢复请求。通过该方案，在第一小区发生目标事件时，可以在第二小区上向网络设备发送第一小区的无线链路恢复请求(则网络设备在收到该第一小区的无线链路恢复请求之后，可以知道是第一小区发生了目标事件，然后可以进一步触发第一小区的无线链路恢复)，从而在辅小区调度主小区的情况下，若主小区发生BF或RLF，或辅小区发生BF或RLF，可以快速实现无线链路恢复。
图4所示，本发明实施例提供一种UE，该UE 300包括：该UE 300包括：发送模块301，其中：发送模块301，用于若UE 300的第一小区发生目标事件，在UE 300的第二小区上，向网络设备发送上述第一小区的无线链路恢复请求；其中，上述第一小区包括以下至少一项：主小区，第一辅小区；上述第二小区包括以下至少一项：上述主小区，上述第一辅小区，第二辅小区；上述第一辅小区为调度上述主小区的辅小区；上述第二辅小区为UE 300的辅小区中除上述第一辅小区之外的辅小区；上述目标事件为BF或RLF。
可选地，上述发送模块301，具体用于：在上述第二小区上，通过第一载体向网络设备发送上述第一小区的无线链路恢复请求；其中，上述第一载体包括以下至少一项：目标RACH，目标调度请求，目标MAC CE。
可选地，在上述第一载体包括上述目标调度请求的情况下，上述目标调度请求为用于恢复第一小区的无线链路的N个调度请求中的至少一个，N为正整数。
可选地，上述N个调度请求中的M个调度请求中的每个调度请求关联有候选波束参考信号，M为小于或等于N的正整数。
可选地，上述目标调度请求是基于上述M个调度请求中的每个调度请求关联的候选波束参考信号的测量结果确定的。
可选地，上述目标调度请求为第一候选波束参考信号对应的调度请求；其中，上述第一候选波束参考信号为满足预定条件的候选波束参考信号。
可选地，上述预定条件包括以下任意一项：上述第一候选波束参考信号为上述M个调度请求关联的候选波束参考信号中，测量结果大于或等于第一阈值的候选波束参考信号；上述第一候选波束参考信号为上述M个调度请求关联的候选波束参考信号中，对应的候选波束的索引最小的至少一个；上述第一候选波束参考信号为上述M个调度请求关联的候选波束参考信号中，对应的候选波束的索引最大的至少一个；上述第一候选波束参考信号为上述M个调度请求关联的候选波束参考信号中，对应的候选波束的索引距上述第一小区的波束的索引最近的至少一个。
可选地，上述目标调度请求为未关联候选波束参考信号的调度请求；或者，上述目标 调度请求为UE 300未检测到关联候选波束参考信号的调度请求。
可选地，上述发送模块301，具体用于：在上述第一载体包括上述目标MAC CE的情况下，若上述第二小区存在第一上行资源，则在上述第一上行资源上，通过该目标MAC CE向网络设备发送第一小区的无线链路恢复请求。
可选地，若UE 300检测到目标候选波束，上述目标MAC CE中携带以下至少一项：上述目标候选波束的索引，第一指示信息；上述第一指示信息用于指示UE 300是否检测到上述目标候选波束；或者，若UE 300未检测到上述目标候选波束，上述目标MAC CE中携带第二指示信息；上述第二指示信息用于指示UE 300未检测到上述目标候选波束。
可选地，上述发送模块301，还用于：在上述第一载体包括上述目标MAC CE的情况下，向上述网络设备发送第一调度请求。
可选地，上述第一调度请求满足以下任意一项：用于恢复上述第一小区的无线链路的调度请求，用于恢复任意辅小区的无线链路的调度请求。
可选地，若UE 300检测到目标候选波束，上述第一调度请求和上述目标MAC CE中的至少一个，携带以下至少一项：上述目标候选波束的索引，第一指示信息；上述第一指示信息用于指示UE 300是否检测到上述目标候选波束；或者，若UE 300未检测到上述目标候选波束，上述第一调度请求和上述目标MAC CE中的至少一个，携带第二指示信息；上述第二指示信息用于指示UE 300未检测到上述目标候选波束。
可选地，上述目标MAC CE满足以下至少一项：用于恢复上述第一小区的无线链路，携带目标标识；其中，上述目标标识用于指示上述第一小区。
可选地，上述UE 300还包括：获取模块302，其中：获取模块302，用于获取第一目标配置信息；其中，上述第一目标配置信息用于恢复上述第一小区的无线链路。
可选地，上述发送模块301，具体用于：根据上述第一目标配置信息，在上述第二小区上，向上述网络设备发送上述第一小区的无线链路恢复请求。
可选地，上述第一目标配置信息包括以下至少一项：上述主小区相关的配置信息，上述第一辅小区相关的配置信息，上述主小区和上述第一辅小区联合相关的配置信息。
可选地，上述第一目标配置信息中的每个配置信息包括以下至少一项：对应小区的RACH，上述对应小区的调度请求。
可选地，上述UE 300还包括：接收模块303，其中：接收模块303，用于在第三小区上，从上述网络设备接收上述第一小区的无线链路恢复响应；上述第三小区为上述第二小区中的至少一个小区。
可选地，上述第一小区的无线链路恢复响应承载在目标RNTI加扰的PDCCH上。
可选地，上述目标RNTI为C-RNTI或者为用于恢复上述第一小区的无线链路的RNTI。
可选地，上述第一小区的无线链路恢复响应为随机接入响应消息RAR。
可选地，上述接收模块303，具体用于：在上述第三小区的第一资源上，从上述网络设备接收上述第一小区的无线链路恢复响应；其中，上述第一资源包括以下至少一项：目标CORESET，目标搜索空间，上述第三小区包括主小区时的目标公共搜索空间。
可选地，在上述第一资源包括上述目标CORESET的情况下，上述目标CORESET为用于恢复上述第一小区的无线链路的CORESET；和/或，在上述第一资源包括上述目标搜索空间的情况下，上述目标搜索空间为用于恢复第一小区的无线链路的搜索空间。
可选地，上述接收模块303，具体用于：在上述目标CORESET关联的至少一个搜索空间上，从上述网络设备接收第一小区的无线链路恢复响应。
可选地，上述至少一个搜索空间为上述目标搜索空间。
可选地，上述获取模块302，还用于获取第二目标配置信息；其中，上述第二目标配置信息用于恢复上述第一小区的无线链路。
可选地，上述接收模块303，具体用于：根据上述第二目标配置信息，在上述第三小区上，从网络设备接收第一小区的无线链路恢复响应。
可选地，上述第二目标配置信息包括以下至少一项：上述主小区相关的配置信息，上述第一辅小区相关的配置信息，上述主小区和上述第一辅小区联合相关的配置信息。
可选地，上述第二目标配置信息中的每个配置信息包括以下至少一项：对应小区的CORESET，上述对应小区的搜索空间。
可选地，上述第二目标配置信息用于传输调度上述对应小区上传输的PDCCH。
可选地，上述发送模块301，还用于：在目标检测资源的测量结果满足目标条件的情况下，UE 300的物理层向UE 300的高层发送目标指示信息；其中，上述目标指示信息用于指示上述目标事件。
可选地，上述目标检测资源包括以下至少一项：为上述主小区配置的第一检测资源，为上述第一辅小区配置的第二检测资源。
可选地，上述目标条件包括第一条件或第二条件；其中，上述第一条件包括以下至少一项：在上述目标检测资源包括上述第一检测资源的情况下，上述第一检测资源中的X个资源的测量结果大于或等于第二阈值；在上述目标检测资源包括上述第二检测资源的情况下，上述第二检测资源中的Y个资源的测量结果大于或等于第三阈值；上述第二条件为：在上述目标检测资源包括上述第一检测资源和上述第二检测资源的情况下，上述第一检测资源和上述第二检测资源中的Z个资源的测量结果大于或等于对应阈值；X、Y、Z均为正整数。
可选地，在上述目标检测资源包括上述第一检测资源和上述第二检测资源的情况下，上述目标指示信息的发送周期为：上述第一检测资源的检测周期和上述第二检测资源的检测周期中的最小值。
需要说明的是，如图4所示，UE 300中一定包括的模块用实线框示意，如发送模块301；UE 300中可以包括也可以不包括的模块用虚线框示意，如获取模块302和接收模块303。
本发明实施例提供的UE能够实现上述实施例所示的各个过程，为避免重复，此处不再赘述。
本发明实施例提供的UE，若UE的第一小区(包括以下至少一项：该主小区，第一辅小区(调度主小区的辅小区))发生目标事件(BF或RLF)，在该UE的第二小区(包括以下至少一项：该主小区，第一辅小区，第二辅小区(该UE的辅小区中除第一辅小区之外的辅小区))上，向网络设备发送第一小区的无线链路恢复请求。通过该方案，在第一小区发生目标事件时，可以在第二小区上向网络设备发送第一小区的无线链路恢复请求(则网络设备在收到该第一小区的无线链路恢复请求之后，可以知道是第一小区发生了目标事件，然后可以进一步触发第一小区的无线链路恢复)，从而在辅小区调度主小区的情 况下，若主小区发生BF或RLF，或辅小区发生BF或RLF，可以快速实现无线链路恢复。
图5为实现本发明各个实施例的一种UE的硬件结构示意图，该UE 400包括但不限于：射频单元401、网络模块402、音频输出单元403、输入单元404、传感器405、显示单元406、用户输入单元407、接口单元408、存储器409、处理器410、以及电源411等部件。本领域技术人员可以理解，图5中示出的UE 400的结构并不构成对UE的限定，UE 400可以包括比图示更多或更少的部件，或者组合某些部件，或者不同的部件布置。在本发明实施例中，UE 400包括但不限于手机、平板电脑、笔记本电脑、掌上电脑、车载UE、可穿戴设备、以及计步器等。
其中，射频单元401，用于若UE的第一小区发生目标事件，在UE的第二小区上，向网络设备发送上述第一小区的无线链路恢复请求；其中，上述第一小区包括以下至少一项：主小区，第一辅小区；上述第二小区包括以下至少一项：上述主小区，上述第一辅小区，第二辅小区；上述第一辅小区为调度上述主小区的辅小区；上述第二辅小区为UE的辅小区中除上述第一辅小区之外的辅小区；上述目标事件为BF或RLF。
本发明实施例提供的UE，若UE的第一小区(包括以下至少一项：该主小区，第一辅小区(调度主小区的辅小区))发生目标事件(BF或RLF)，在该UE的第二小区(包括以下至少一项：该主小区，第一辅小区，第二辅小区(该UE的辅小区中除第一辅小区之外的辅小区))上，向网络设备发送第一小区的无线链路恢复请求。通过该方案，在第一小区发生目标事件时，可以在第二小区上向网络设备发送第一小区的无线链路恢复请求(则网络设备在收到该第一小区的无线链路恢复请求之后，可以知道是第一小区发生了目标事件，然后可以进一步触发第一小区的无线链路恢复)，从而在辅小区调度主小区的情况下，若主小区发生BF或RLF，或辅小区发生BF或RLF，可以快速实现无线链路恢复。
应理解的是，本发明实施例中，射频单元401可用于收发信息或通话过程中，信号的接收和发送，具体的，将来自基站的下行数据接收后，给处理器410处理；另外，将上行的数据发送给基站。通常，射频单元401包括但不限于天线、至少一个放大器、收发信机、耦合器、低噪声放大器、双工器等。此外，射频单元401还可以通过无线通信系统与网络和其他设备通信。
UE 400通过网络模块402为用户提供了无线的宽带互联网访问，如帮助用户收发电子邮件、浏览网页和访问流式媒体等。
音频输出单元403可以将射频单元401或网络模块402接收的或者在存储器409中存储的音频数据转换成音频信号并且输出为声音。而且，音频输出单元403还可以提供与UE400执行的特定功能相关的音频输出(例如，呼叫信号接收声音、消息接收声音等等)。音频输出单元403包括扬声器、蜂鸣器以及受话器等。
输入单元404用于接收音频或视频信号。输入单元404可以包括图形处理器(Graphics Processing Unit，GPU)4041和麦克风4042，图形处理器4041对在视频捕获模式或图像捕获模式中由图像捕获装置(如摄像头)获得的静态图片或视频的图像数据进行处理。处理后的图像帧可以显示在显示单元406上。经图形处理器4041处理后的图像帧可以存储在存储器409(或其它存储介质)中或者经由射频单元401或网络模块402进行发送。麦克风4042可以接收声音，并且能够将这样的声音处理为音频数据。处理后的音频数据可以在电话通话模式的情况下转换为可经由射频单元401发送到移动通信基站的格式输出。
UE 400还包括至少一种传感器405，比如光传感器、运动传感器以及其他传感器。具体地，光传感器包括环境光传感器及接近传感器，其中，环境光传感器可根据环境光线的明暗来调节显示面板4061的亮度，接近传感器可在UE 400移动到耳边时，关闭显示面板4061和/或背光。作为运动传感器的一种，加速计传感器可检测各个方向上(一般为三轴)加速度的大小，静止时可检测出重力的大小及方向，可用于识别UE姿态(比如横竖屏切换、相关游戏、磁力计姿态校准)、振动识别相关功能(比如计步器、敲击)等；传感器405还可以包括指纹传感器、压力传感器、虹膜传感器、分子传感器、陀螺仪、气压计、湿度计、温度计、红外线传感器等，在此不再赘述。
显示单元406用于显示由用户输入的信息或提供给用户的信息。显示单元406可包括显示面板4061，可以采用液晶显示器(Liquid Crystal Display，LCD)、有机发光二极管(Organic Light-Emitting Diode，OLED)等形式来配置显示面板4061。
用户输入单元407可用于接收输入的数字或字符信息，以及产生与UE 400的用户设置以及功能控制有关的键信号输入。具体地，用户输入单元407包括触控面板4071以及其他输入设备4072。触控面板4071，也称为触摸屏，可收集用户在其上或附近的触摸操作(比如用户使用手指、触笔等任何适合的物体或附件在触控面板4071上或在触控面板4071附近的操作)。触控面板4071可包括触摸检测装置和触摸控制器两个部分。其中，触摸检测装置检测用户的触摸方位，并检测触摸操作带来的信号，将信号传送给触摸控制器；触摸控制器从触摸检测装置上接收触摸信息，并将它转换成触点坐标，再送给处理器410，接收处理器410发来的命令并加以执行。此外，可以采用电阻式、电容式、红外线以及表面声波等多种类型实现触控面板4071。除了触控面板4071，用户输入单元407还可以包括其他输入设备4072。具体地，其他输入设备4072可以包括但不限于物理键盘、功能键(比如音量控制按键、开关按键等)、轨迹球、鼠标、操作杆，在此不再赘述。
进一步的，触控面板4071可覆盖在显示面板4061上，当触控面板4071检测到在其上或附近的触摸操作后，传送给处理器410以确定触摸事件的类型，随后处理器410根据触摸事件的类型在显示面板4061上提供相应的视觉输出。虽然在图5中，触控面板4071与显示面板4061是作为两个独立的部件来实现UE 400的输入和输出功能，但是在某些实施例中，可以将触控面板4071与显示面板4061集成而实现UE 400的输入和输出功能，具体此处不做限定。
接口单元408为外部装置与UE 400连接的接口。例如，外部装置可以包括有线或无线头戴式耳机端口、外部电源(或电池充电器)端口、有线或无线数据端口、存储卡端口、用于连接具有识别模块的装置的端口、音频输入/输出(I/O)端口、视频I/O端口、耳机端口等等。接口单元408可以用于接收来自外部装置的输入(例如，数据信息、电力等等)并且将接收到的输入传输到UE 400内的一个或多个元件或者可以用于在UE 400和外部装置之间传输数据。
存储器409可用于存储软件程序以及各种数据。存储器409可主要包括存储程序区和存储数据区，其中，存储程序区可存储操作系统、至少一个功能所需的应用程序(比如声音播放功能、图像播放功能等)等；存储数据区可存储根据手机的使用所创建的数据(比如音频数据、电话本等)等。此外，存储器409可以包括高速随机存取存储器，还可以包括非易失性存储器，例如至少一个磁盘存储器件、闪存器件、或其他易失性固态存储器件。
处理器410是UE 400的控制中心，利用各种接口和线路连接整个UE 400的各个部分，通过运行或执行存储在存储器409内的软件程序和/或模块，以及调用存储在存储器409内的数据，执行UE 400的各种功能和处理数据，从而对UE 400进行整体监控。处理器410可包括一个或多个处理单元；可选的，处理器410可集成应用处理器和调制解调处理器，其中，应用处理器主要处理操作系统、用户界面和应用程序等，调制解调处理器主要处理无线通信。可以理解的是，上述调制解调处理器也可以不集成到处理器410中。
UE 400还可以包括给各个部件供电的电源411(比如电池)，可选的，电源411可以通过电源管理系统与处理器410逻辑相连，从而通过电源管理系统实现管理充电、放电、以及功耗管理等功能。
另外，UE 400包括一些未示出的功能模块，在此不再赘述。
可选的，本发明实施例还提供一种UE，包括如图5所示的处理器410，存储器409，存储在存储器409上并可在所述处理器410上运行的计算机程序，该计算机程序被处理器410执行时实现上述方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
图6为实现本发明实施例的一种网络设备的硬件结构示意图，该网络设备500包括：接收模块501，其中：接收模块501，用于在UE的第二小区上，从UE接收UE的第一小区的无线链路恢复请求；其中，上述第一小区的无线链路恢复请求用于指示上述第一小区发生目标事件；上述第一小区包括以下至少一项：主小区，第一辅小区；上述第二小区包括以下至少一项：上述主小区，上述第一辅小区，第二辅小区；上述第一辅小区为调度上述主小区的辅小区；上述第二辅小区为UE的辅小区中除上述第一辅小区之外的辅小区；上述目标事件为BF或RLF。
可选地，上述接收模块501，具体用于：在上述第二小区上，通过第一载体从UE接收上述第一小区的无线链路恢复请求；其中，上述第一载体包括以下至少一项：目标RACH，目标调度请求，目标MAC CE。
可选地，在上述第一载体包括上述目标调度请求的情况下，上述目标调度请求为用于恢复上述第一小区的无线链路的N个调度请求中的至少一个，N为正整数。
可选地，上述N个调度请求中的M个调度请求中的每个调度请求关联有候选波束参考信号，M为小于或等于N的正整数。
可选地，上述目标调度请求是基于上述M个调度请求中的每个调度请求关联的候选波束参考信号的测量结果确定的。
可选地，上述目标调度请求为第一候选波束参考信号对应的调度请求；其中，上述第一候选波束参考信号为满足预定条件的候选波束参考信号。
可选地，上述预定条件包括以下任意一项：上述第一候选波束参考信号为上述M个调度请求关联的候选波束参考信号中，测量结果大于或等于第一阈值的候选波束参考信号；上述第一候选波束参考信号为上述M个调度请求关联的候选波束参考信号中，对应的候选波束的索引最小的至少一个；上述第一候选波束参考信号为上述M个调度请求关联的候选波束参考信号中，对应的候选波束的索引最大的至少一个；上述第一候选波束参考信号为上述M个调度请求关联的候选波束参考信号中，对应的候选波束的索引距上述第一小区的波束的索引最近的至少一个。
可选地，上述目标调度请求为未关联候选波束参考信号的调度请求；或者，上述目标调度请求为UE未检测到关联候选波束参考信号的调度请求。
可选地，上述接收模块501，具体用于：在上述第一载体包括上述目标MAC CE的情况下，若上述第二小区存在第一上行资源，则在上述第一上行资源上，通过上述目标MAC CE从UE接收上述第一小区的无线链路恢复请求。
可选地，若UE检测到目标候选波束，上述目标MAC CE中携带以下至少一项：上述目标候选波束的索引，第一指示信息；上述第一指示信息用于指示UE是否检测到上述目标候选波束；或者，若UE未检测到上述目标候选波束，上述目标MAC CE中携带第二指示信息；上述第二指示信息用于指示UE未检测到上述目标候选波束。
可选地，上述接收模块501，还用于：在上述第一载体包括上述目标MAC CE的情况下，从UE接收第一调度请求。
可选地，上述第一调度请求满足以下任意一项：用于恢复上述第一小区的无线链路的调度请求，用于恢复任意辅小区的无线链路的调度请求。
可选地，若UE检测到目标候选波束，上述第一调度请求和/或上述目标MAC CE中携带以下至少一项：上述目标候选波束的索引，第一指示信息；上述第一指示信息用于指示UE检测到上述目标候选波束；或者，若UE未检测到上述目标候选波束，上述第一调度请求和/或上述目标MAC CE中携带第二指示信息；上述第二指示信息用于指示UE未检测到上述目标候选波束。
可选地，上述目标MAC CE满足以下至少一项：用于恢复上述第一小区的无线链路，携带目标标识；其中，上述目标标识用于指示上述第一小区。
可选地，上述网络设备，还包括：发送模块502，其中：发送模块502，用于向UE发送第一目标配置信息；其中，上述第一目标配置信息用于恢复上述第一小区的无线链路。
可选地，上述接收模块501，具体用于：根据上述第一目标配置信息，在上述第二小区上，从UE接收上述第一小区的无线链路恢复请求。
可选地，上述第一目标配置信息包括以下至少一项：上述主小区相关的配置信息，上述第一辅小区相关的配置信息，上述主小区和上述第一辅小区联合相关的配置信息。
可选地，上述第一目标配置信息中的每个配置信息包括以下至少一项：对应小区的RACH，上述对应小区的调度请求。
可选地，上述发送模块502，还用于在第三小区上，向UE发送上述第一小区的无线链路恢复响应；上述第三小区为上述第二小区中的至少一个小区。
可选地，上述第一小区的无线链路恢复响应承载在目标RNTI加扰的PDCCH上。
可选地，上述目标RNTI为C-RNTI或者为用于恢复上述第一小区的无线链路的RNTI。
可选地，上述第一小区的无线链路恢复响应为RAR。
可选地，上述发送模块502，具体用于：在上述第三小区的第一资源上，向UE发送上述第一小区的无线链路恢复响应；其中，上述第一资源包括以下至少一项：目标CORESET，目标搜索空间，上述第三小区包括上述主小区时的目标公共搜索空间。
可选地，在上述第一资源包括上述目标CORESET的情况下，上述目标CORESET为用于恢复上述第一小区的无线链路的CORESET；和/或，在上述第一资源包括上述目标搜索空间的情况下，上述目标搜索空间为用于恢复上述第一小区的无线链路的搜索空间。
可选地，上述发送模块502，具体用于：在上述第一资源包括上述目标CORESET的情况下，在上述目标CORESET关联的至少一个搜索空间上，向UE发送上述第一小区的无线链路恢复响应。
可选地，上述至少一个搜索空间为上述目标搜索空间。
可选地，上述发送模块502，还用于向UE发送第二目标配置信息；其中，上述第二目标配置信息用于恢复第一小区的无线链路。
可选地，上述接收模块501，具体用于：根据上述第二目标配置信息，在上述第三小区上，向UE发送第一小区的无线链路恢复响应。
可选地，上述第二目标配置信息包括以下至少一项：上述主小区相关的配置信息，上述第一辅小区相关的配置信息，上述主小区和上述第一辅小区联合相关的配置信息。
可选地，上述第二目标配置信息中的每个配置信息包括以下至少一项：对应小区的CORESET，上述对应小区的搜索空间。
可选地，上述第二目标配置信息用于传输调度上述对应小区上传输的PDCCH。
可选地，上述发送模块502，还用于：向UE发送目标检测资源；其中，在上述目标事件为BF的情况下，上述目标检测资源用于评估或测量波束，在上述目标事件为RLF的情况下，上述目标检测资源用于评估或测量无线链路。
可选地，上述目标检测资源包括以下至少一项：为上述主小区配置的第一检测资源，为上述第一辅小区配置的第二检测资源。
需要说明的是，如图6所示，网络设备500中一定包括的模块用实线框示意，如接收模块501；网络设备500中可以包括也可以不包括的模块用虚线框示意，如发送模块502。
本发明实施例提供的网络设备可以为上述的网络设备能够实现上述方法实施例所示的各个过程，为避免重复，此处不再赘述。
本发明实施例提供的网络设备，若UE的第一小区(包括以下至少一项：该主小区，第一辅小区(调度主小区的辅小区))发生目标事件(BF或RLF)，在该UE的第二小区(包括以下至少一项：该主小区，第一辅小区，第二辅小区(该UE的辅小区中除第一辅小区之外的辅小区))上，向网络设备发送第一小区的无线链路恢复请求。通过该方案，在第一小区发生目标事件时，可以在第二小区上向网络设备发送第一小区的无线链路恢复请求(则网络设备在收到该第一小区的无线链路恢复请求之后，可以知道是第一小区发生了目标事件，然后可以进一步触发第一小区的无线链路恢复)，从而在辅小区调度主小区的情况下，若主小区发生BF或RLF，或辅小区发生BF或RLF，可以快速实现无线链路恢复。
图7为实现本发明实施例的一种网络设备的硬件结构示意图，该网络设备600为目标小区所属的目标网络设备，该网络设备600包括：处理器601、收发机602、存储器603、用户接口604和总线接口605。
其中，收发机602，用于在UE的第二小区上，从UE接收UE的第一小区的无线链路恢复请求；其中，上述第一小区的无线链路恢复请求用于指示上述第一小区发生目标事件；上述第一小区包括以下至少一项：主小区，第一辅小区；上述第二小区包括以下至少一项：上述主小区，上述第一辅小区，第二辅小区；上述第一辅小区为调度上述主小区的辅小区；上述第二辅小区为UE的辅小区中除上述第一辅小区之外的辅小区；上述目标事件为BF 或RLF。
本发明实施例提供的网络设备，若UE的第一小区(包括以下至少一项：该主小区，第一辅小区(调度主小区的辅小区))发生目标事件(BF或RLF)，在该UE的第二小区(包括以下至少一项：该主小区，第一辅小区，第二辅小区(该UE的辅小区中除第一辅小区之外的辅小区))上，向网络设备发送第一小区的无线链路恢复请求。通过该方案，在第一小区发生目标事件时，可以在第二小区上向网络设备发送第一小区的无线链路恢复请求(则网络设备在收到该第一小区的无线链路恢复请求之后，可以知道是第一小区发生了目标事件，然后可以进一步触发第一小区的无线链路恢复)，从而在辅小区调度主小区的情况下，若主小区发生BF或RLF，或辅小区发生BF或RLF，可以快速实现无线链路恢复。
本发明实施例中，在图7中，总线架构可以包括任意数量的互联的总线和桥，具体由处理器601代表的一个或多个处理器和存储器603代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口提供接口。收发机602可以是多个元件，即包括发送机和接收机，提供用于在传输介质上与各种其他装置通信的单元。针对不同的UE，用户接口604还可以是能够外接内接需要设备的接口，连接的设备包括但不限于小键盘、显示器、扬声器、麦克风、操纵杆等。处理器601负责管理总线架构和通常的处理，存储器603可以存储处理器601在执行操作时所使用的数据。
另外，网络设备600还包括一些未示出的功能模块，在此不再赘述。
可选的，本发明实施例还提供一种网络设备，包括如图7所示的处理器601，存储器603，存储在存储器603上并可在处理器601上运行的计算机程序，该计算机程序被处理器601执行时实现上述方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
本发明实施例还提供一种通信系统，该通信系统包括如上述实施例所述的UE、以及网络设备。
本发明实施例还提供一种计算机可读存储介质，计算机可读存储介质上存储有计算机程序，该计算机程序被如图5所示的处理器410和/或如图7所示的处理器601执行时实现上述方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。其中，的计算机可读存储介质，如只读存储器(Read-Only Memory，简称ROM)、随机存取存储器(Random Access Memory，简称RAM)、磁碟或者光盘等。
需要说明的是，在本文中，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者装置不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者装置所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括该要素的过程、方法、物品或者装置中还存在另外的相同要素。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到上述实施例方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解，本发明的技术方案本质上或者说对现有技术做出贡献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(如 ROM/RAM、磁碟、光盘)中，包括若干指令用以使得一台终端设备(可以是手机，计算机，服务器，空调器，或者网络设备等)执行本发明各个实施例所述的方法。
上面结合附图对本发明的实施例进行了描述，但是本发明并不局限于上述的具体实施方式，上述的具体实施方式仅仅是示意性的，而不是限制性的，本领域的普通技术人员在本发明的启示下，在不脱离本发明宗旨和权利要求所保护的范围情况下，还可做出很多形式，均属于本发明的保护之内。

Claims (79)

  1. 一种无线链路恢复方法，所述方法包括：
    若用户设备UE的第一小区发生目标事件，所述UE在所述UE的第二小区上，向网络设备发送所述第一小区的无线链路恢复请求；
    其中，所述第一小区包括以下至少一项：主小区，第一辅小区；
    所述第二小区包括以下至少一项：所述主小区，所述第一辅小区，第二辅小区；
    所述第一辅小区为调度所述主小区的辅小区；所述第二辅小区为所述UE的辅小区中除所述第一辅小区之外的辅小区；
    所述目标事件为波束失败BF或无线链路失败RLF。
  2. 根据权利要求1所述的方法，其中，所述UE在所述UE的第二小区上，向网络设备发送所述第一小区的无线链路恢复请求，包括：
    所述UE在所述第二小区上，通过第一载体向网络设备发送所述第一小区的无线链路恢复请求；
    其中，所述第一载体包括以下至少一项：目标随机接入信道RACH，目标调度请求，目标媒体接入控制-控制单元MAC CE。
  3. 根据权利要求2所述的方法，其中，在所述第一载体包括所述目标调度请求的情况下，所述目标调度请求为用于恢复所述第一小区的无线链路的N个调度请求中的至少一个，N为正整数。
  4. 根据权利要求3所述的方法，其中，所述N个调度请求中的M个调度请求中的每个调度请求关联有候选波束参考信号，M为小于或等于N的正整数。
  5. 根据权利要求4所述的方法，其中，所述目标调度请求是基于所述M个调度请求中的每个调度请求关联的候选波束参考信号的测量结果确定的。
  6. 根据权利要求4或5所述的方法，其中，所述目标调度请求为第一候选波束参考信号对应的调度请求；
    其中，所述第一候选波束参考信号为满足预定条件的候选波束参考信号。
  7. 根据权利要求2或3所述的方法，其中，在所述第一载体包括所述目标调度请求的情况下，所述目标调度请求为未关联候选波束参考信号的调度请求；或者，所述目标调度请求为所述UE未检测到关联候选波束参考信号的调度请求。
  8. 根据权利要求2所述的方法，其中，在所述第一载体包括所述目标MAC CE的情况下，所述UE在第二小区上，通过第一载体向网络设备发送所述第一小区的无线链路恢复请求，包括：
    若所述第二小区存在第一上行资源，则所述UE在所述第一上行资源上，通过所述目标MAC CE向所述网络设备发送所述第一小区的无线链路恢复请求。
  9. 根据权利要求8所述的方法，其中，若所述UE检测到目标候选波束，所述目标MAC CE中携带以下至少一项：所述目标候选波束的索引，第一指示信息；所述第一指示信息用于指示所述UE是否检测到所述目标候选波束；
    或者，
    若所述UE未检测到所述目标候选波束，所述目标MAC CE中携带第二指示信息；所述第二指示信息用于指示所述UE未检测到所述目标候选波束。
  10. 根据权利要求2所述的方法，其中，在所述第一载体包括所述目标MAC CE的情况下，所述UE在第二小区上，通过第一载体向网络设备发送所述第一小区的无线链路恢复请求之前，所述方法还包括：
    所述UE向所述网络设备发送第一调度请求。
  11. 根据权利要求10所述的方法，其中，所述第一调度请求满足以下任意一项：
    用于恢复所述第一小区的无线链路的调度请求，用于恢复任意辅小区的无线链路的调度请求。
  12. 根据权利要求10或11所述的方法，其中，若所述UE检测到目标候选波束，所述第一调度请求和所述目标MAC CE中的至少一个，携带以下至少一项：所述目标候选波束的索引，第一指示信息；所述第一指示信息用于指示所述UE是否检测到所述目标候选波束；
    或者，
    若所述UE未检测到所述目标候选波束，所述第一调度请求和所述目标MAC CE中的至少一个，携带第二指示信息；所述第二指示信息用于指示所述UE未检测到所述目标候选波束。
  13. 根据权利要求8至11中任意一项所述的方法，其中，所述目标MAC CE满足以下至少一项：
    用于恢复所述第一小区的无线链路，携带目标标识；
    其中，所述目标标识用于指示所述第一小区。
  14. 根据权利要求1所述的方法，其中，所述UE在所述UE的第二小区上，向网络设备发送所述第一小区的无线链路恢复请求之前，所述方法还包括：
    所述UE获取第一目标配置信息；
    其中，所述第一目标配置信息用于恢复所述第一小区的无线链路。
  15. 根据权利要求14所述的方法，其中，所述UE在所述UE的第二小区上，向网络设备发送所述第一小区的无线链路恢复请求，包括：
    所述UE根据所述第一目标配置信息，在所述第二小区上，向所述网络设备发送所述第一小区的无线链路恢复请求。
  16. 根据权利要求14或15所述的方法，其中，所述第一目标配置信息包括以下至少一项：所述主小区相关的配置信息，所述第一辅小区相关的配置信息，所述主小区和所述第一辅小区联合相关的配置信息。
  17. 根据权利要求1所述的方法，其中，所述UE在所述UE的第二小区上，向网络设备发送所述第一小区的无线链路恢复请求之后，所述方法还包括：
    所述UE在第三小区上，从所述网络设备接收所述第一小区的无线链路恢复响应；
    所述第三小区为所述第二小区中的至少一个小区。
  18. 根据权利要求17所述的方法，其中，所述UE在第三小区上，从所述网络设备接收所述第一小区的无线链路恢复响应，包括：
    所述UE在所述第三小区的第一资源上，从所述网络设备接收所述第一小区的无线链路恢复响应；
    其中，所述第一资源包括以下至少一项：目标资源控制集CORESET，目标搜索 空间，所述第三小区包括所述主小区时的目标公共搜索空间。
  19. 根据权利要求17所述的方法，其中，所述UE在第三小区上，从所述网络设备接收所述第一小区的无线链路恢复响应之前，所述方法还包括：
    所述UE获取第二目标配置信息；
    其中，所述第二目标配置信息用于恢复所述第一小区的无线链路。
  20. 根据权利要求19所述的方法，其中，所述UE在第三小区上，从所述网络设备接收所述第一小区的无线链路恢复响应，包括：
    所述UE根据所述第二目标配置信息，在所述第三小区上，从所述网络设备接收所述第一小区的无线链路恢复响应。
  21. 根据权利要求19或20所述的方法，其中，所述第二目标配置信息包括以下至少一项：所述主小区相关的配置信息，所述第一辅小区相关的配置信息，所述主小区和所述第一辅小区联合相关的配置信息。
  22. 根据权利要求1所述的方法，其中，所述UE在所述UE的第二小区上，向网络设备发送所述第一小区的无线链路恢复请求之前，所述方法还包括：
    所述UE在目标检测资源的测量结果满足目标条件的情况下，所述UE的物理层向所述UE的高层发送目标指示信息；
    其中，所述目标指示信息用于指示所述目标事件。
  23. 根据权利要求22所述的方法，其中，所述目标检测资源包括以下至少一项：为所述主小区配置的第一检测资源，为所述第一辅小区配置的第二检测资源。
  24. 根据权利要求23所述的方法，其中，所述目标条件包括第一条件或第二条件；
    其中，所述第一条件包括以下至少一项：
    在所述目标检测资源包括所述第一检测资源的情况下，所述第一检测资源中的X个资源的测量结果大于或等于第二阈值；在所述目标检测资源包括所述第二检测资源的情况下，所述第二检测资源中的Y个资源的测量结果大于或等于第三阈值；
    所述第二条件为：在所述目标检测资源包括所述第一检测资源和所述第二检测资源的情况下，所述第一检测资源和所述第二检测资源中的Z个资源的测量结果大于或等于对应阈值；
    X、Y、Z均为正整数。
  25. 根据权利要求23或24所述的方法，其中，在所述目标检测资源包括所述第一检测资源和所述第二检测资源的情况下，所述目标指示信息的发送周期为：所述第一检测资源的检测周期和所述第二检测资源的检测周期中的最小值。
  26. 一种无线链路恢复方法，所述方法包括：
    网络设备在用户设备UE的第二小区上，从所述UE接收所述UE的第一小区的无线链路恢复请求；
    其中，所述第一小区的无线链路恢复请求用于指示所述第一小区发生目标事件；
    所述第一小区包括以下至少一项：主小区，第一辅小区；
    所述第二小区包括以下至少一项：所述主小区，所述第一辅小区，第二辅小区；
    所述第一辅小区为调度所述主小区的辅小区；所述第二辅小区为所述UE的辅小区中除所述第一辅小区之外的辅小区；
    所述目标事件为波束失败BF或无线链路失败RLF。
  27. 根据权利要求26所述的方法，其中，所述网络设备在UE的第二小区上，从所述UE接收所述UE的第一小区的无线链路恢复请求，包括：
    所述网络设备在所述第二小区上，通过第一载体从所述UE接收所述第一小区的无线链路恢复请求；
    其中，所述第一载体包括以下至少一项：目标随机接入信道RACH，目标调度请求，目标媒体接入控制-控制单元MAC CE。
  28. 根据权利要求27所述的方法，其中，在所述第一载体包括所述目标调度请求的情况下，所述目标调度请求为未关联候选波束参考信号的调度请求；或者，所述目标调度请求为所述UE未检测到关联候选波束参考信号的调度请求。
  29. 根据权利要求27所述的方法，其中，在所述第一载体包括所述目标MAC CE的情况下，所述网络设备在所述第二小区上，通过第一载体从所述UE接收所述第一小区的无线链路恢复请求，包括：
    若所述第二小区存在第一上行资源，则所述网络设备在所述第一上行资源上，通过所述目标MAC CE从所述UE接收所述第一小区的无线链路恢复请求。
  30. 根据权利要求27所述的方法，其中，在所述第一载体包括所述目标MAC CE的情况下，所述网络设备在所述第二小区上，通过第一载体从所述UE接收所述第一小区的无线链路恢复请求之前，所述方法还包括：
    所述网络设备从所述UE接收第一调度请求。
  31. 根据权利要求30所述的方法，其中，所述第一调度请求满足以下任意一项：
    用于恢复所述第一小区的无线链路的调度请求，用于恢复任意辅小区的无线链路的调度请求。
  32. 根据权利要求26所述的方法，其中，所述网络设备在UE的第二小区上，从所述UE接收所述UE的第一小区的无线链路恢复请求之前，所述方法还包括：
    所述网络设备向所述UE发送第一目标配置信息；
    其中，所述第一目标配置信息用于恢复所述第一小区的无线链路。
  33. 根据权利要求32所述的方法，其中，所述网络设备在所述UE的第二小区上，从所述UE接收所述UE的第一小区的无线链路恢复请求，包括：
    所述网络设备根据所述第一目标配置信息，在所述第二小区上，从所述UE接收所述第一小区的无线链路恢复请求。
  34. 根据权利要求26所述的方法，其中，所述网络设备在UE的第二小区上，从所述UE接收所述UE的第一小区的无线链路恢复请求之后，所述方法还包括：
    所述网络设备在第三小区上，向所述UE发送所述第一小区的无线链路恢复响应；
    所述第三小区为所述第二小区中的至少一个小区。
  35. 根据权利要求34所述的方法，其中，所述网络设备在第三小区上，向所述UE发送所述第一小区的无线链路恢复响应之前，所述方法还包括：
    所述网络设备向所述UE发送第二目标配置信息；
    其中，所述第二目标配置信息用于恢复所述第一小区的无线链路。
  36. 根据权利要求35所述的方法，其中，所述网络设备在第三小区上，向所述 UE发送所述第一小区的无线链路恢复响应，包括：
    所述网络设备根据所述第二目标配置信息，在所述第三小区上，向所述UE发送所述第一小区的无线链路恢复响应。
  37. 根据权利要求26所述的方法，其中，所述网络设备在UE的第二小区上，从所述UE接收所述UE的第一小区的无线链路恢复请求之前，所述方法还包括：
    向所述UE发送目标检测资源。
  38. 根据权利要求37所述的方法，其中，所述目标检测资源包括以下至少一项：为所述主小区配置的第一检测资源，为所述第一辅小区配置的第二检测资源。
  39. 一种用户设备UE，所述UE包括：发送模块；
    所述发送模块，用于若所述UE的第一小区发生目标事件，在所述UE的第二小区上，向网络设备发送所述第一小区的无线链路恢复请求；
    其中，所述第一小区包括以下至少一项：主小区，第一辅小区；
    所述第二小区包括以下至少一项：所述主小区，所述第一辅小区，第二辅小区；
    所述第一辅小区为调度所述主小区的辅小区；所述第二辅小区为所述UE的辅小区中除所述第一辅小区之外的辅小区；
    所述目标事件为波束失败BF或无线链路失败RLF。
  40. 根据权利要求39所述的UE，其中，所述发送模块，具体用于在所述第二小区上，通过第一载体向网络设备发送所述第一小区的无线链路恢复请求；
    其中，所述第一载体包括以下至少一项：目标随机接入信道RACH，目标调度请求，目标媒体接入控制-控制单元MAC CE。
  41. 根据权利要求40所述的UE，其中，在所述第一载体包括所述目标调度请求的情况下，所述目标调度请求为用于恢复所述第一小区的无线链路的N个调度请求中的至少一个，N为正整数。
  42. 根据权利要求41所述的UE，其中，所述N个调度请求中的M个调度请求中的每个调度请求关联有候选波束参考信号，M为小于或等于N的正整数。
  43. 根据权利要求42所述的UE，其中，所述目标调度请求是基于所述M个调度请求中的每个调度请求关联的候选波束参考信号的测量结果确定的。
  44. 根据权利要求42或43所述的UE，其中，所述目标调度请求为第一候选波束参考信号对应的调度请求；
    其中，所述第一候选波束参考信号为满足预定条件的候选波束参考信号。
  45. 根据权利要求40或41所述的UE，其中，在所述第一载体包括所述目标调度请求的情况下，所述目标调度请求为未关联候选波束参考信号的调度请求；或者，所述目标调度请求为所述UE未检测到关联候选波束参考信号的调度请求。
  46. 根据权利要求40所述的UE，其中，在所述第一载体包括所述目标MAC CE的情况下，所述发送模块，具体用于若所述第二小区存在第一上行资源，则在所述第一上行资源上，通过所述目标MAC CE向所述网络设备发送所述第一小区的无线链路恢复请求。
  47. 根据权利要求46所述的UE，其中，若所述UE检测到目标候选波束，所述目标MAC CE中携带以下至少一项：所述目标候选波束的索引，第一指示信息；所述 第一指示信息用于指示所述UE是否检测到所述目标候选波束；
    或者，
    若所述UE未检测到所述目标候选波束，所述目标MAC CE中携带第二指示信息；所述第二指示信息用于指示所述UE未检测到所述目标候选波束。
  48. 根据权利要求40所述的UE，其中，在所述第一载体包括所述目标MAC CE的情况下，所述发送模块，还用于在所述UE在第二小区上，通过第一载体向网络设备发送所述第一小区的无线链路恢复请求之前，向所述网络设备发送第一调度请求。
  49. 根据权利要求48所述的UE，其中，所述第一调度请求满足以下任意一项：
    用于恢复所述第一小区的无线链路的调度请求，用于恢复任意辅小区的无线链路的调度请求。
  50. 根据权利要求48或49所述的UE，其中，若所述UE检测到目标候选波束，所述第一调度请求和所述目标MAC CE中的至少一个，携带以下至少一项：所述目标候选波束的索引，第一指示信息；所述第一指示信息用于指示所述UE是否检测到所述目标候选波束；
    或者，
    若所述UE未检测到所述目标候选波束，所述第一调度请求和所述目标MAC CE中的至少一个，携带第二指示信息；所述第二指示信息用于指示所述UE未检测到所述目标候选波束。
  51. 根据权利要求46至49中任意一项所述的UE，其中，所述目标MAC CE满足以下至少一项：
    用于恢复所述第一小区的无线链路，携带目标标识；
    其中，所述目标标识用于指示所述第一小区。
  52. 根据权利要求39所述的UE，其中，所述UE还包括：获取模块；
    所述获取模块，用于在所述在所述UE的第二小区上，向网络设备发送所述第一小区的无线链路恢复请求之前，获取第一目标配置信息；
    其中，所述第一目标配置信息用于恢复所述第一小区的无线链路。
  53. 根据权利要求52所述的UE，其中，所述发送模块，具体用于根据所述第一目标配置信息，在所述第二小区上，向所述网络设备发送所述第一小区的无线链路恢复请求。
  54. 根据权利要求52或53所述的UE，其中，所述第一目标配置信息包括以下至少一项：所述主小区相关的配置信息，所述第一辅小区相关的配置信息，所述主小区和所述第一辅小区联合相关的配置信息。
  55. 根据权利要求39所述的UE，其中，所述UE还包括：接收模块；
    所述接收模块，用于在所述在所述UE的第二小区上，向网络设备发送所述第一小区的无线链路恢复请求之后，在第三小区上，从所述网络设备接收所述第一小区的无线链路恢复响应；
    所述第三小区为所述第二小区中的至少一个小区。
  56. 根据权利要求55所述的UE，其中，所述接收模块，具体用于在所述第三小区的第一资源上，从所述网络设备接收所述第一小区的无线链路恢复响应；
    其中，所述第一资源包括以下至少一项：目标资源控制集CORESET，目标搜索空间，所述第三小区包括所述主小区时的目标公共搜索空间。
  57. 根据权利要求55所述的UE，其中，所述UE还包括：获取模块；
    所述获取模块，用于在所述在第三小区上，从所述网络设备接收所述第一小区的无线链路恢复响应之前，获取第二目标配置信息；
    其中，所述第二目标配置信息用于恢复所述第一小区的无线链路。
  58. 根据权利要求57所述的UE，其中，所述接收模块，具体用于根据所述第二目标配置信息，在所述第三小区上，从所述网络设备接收所述第一小区的无线链路恢复响应。
  59. 根据权利要求57或58所述的UE，其中，所述第二目标配置信息包括以下至少一项：所述主小区相关的配置信息，所述第一辅小区相关的配置信息，所述主小区和所述第一辅小区联合相关的配置信息。
  60. 根据权利要求39所述的UE，其中，所述发送模块，还用于在所述UE的第二小区上，向网络设备发送所述第一小区的无线链路恢复请求之前，在目标检测资源的测量结果满足目标条件的情况下，所述UE的物理层向所述UE的高层发送目标指示信息；
    其中，所述目标指示信息用于指示所述目标事件。
  61. 根据权利要求60所述的UE，其中，所述目标检测资源包括以下至少一项：为所述主小区配置的第一检测资源，为所述第一辅小区配置的第二检测资源。
  62. 根据权利要求61所述的UE，其中，所述目标条件包括第一条件或第二条件；
    其中，所述第一条件包括以下至少一项：
    在所述目标检测资源包括所述第一检测资源的情况下，所述第一检测资源中的X个资源的测量结果大于或等于第二阈值；在所述目标检测资源包括所述第二检测资源的情况下，所述第二检测资源中的Y个资源的测量结果大于或等于第三阈值；
    所述第二条件为：在所述目标检测资源包括所述第一检测资源和所述第二检测资源的情况下，所述第一检测资源和所述第二检测资源中的Z个资源的测量结果大于或等于对应阈值；
    X、Y、Z均为正整数。
  63. 根据权利要求61或62所述的UE，其中，在所述目标检测资源包括所述第一检测资源和所述第二检测资源的情况下，所述目标指示信息的发送周期为：所述第一检测资源的检测周期和所述第二检测资源的检测周期中的最小值。
  64. 一种网络设备，所述网络设备包括：接收模块；
    所述接收模块，用于在用户设备UE的第二小区上，从所述UE接收所述UE的第一小区的无线链路恢复请求；
    其中，所述第一小区的无线链路恢复请求用于指示所述第一小区发生目标事件；
    所述第一小区包括以下至少一项：主小区，第一辅小区；
    所述第二小区包括以下至少一项：所述主小区，所述第一辅小区，第二辅小区；
    所述第一辅小区为调度所述主小区的辅小区；所述第二辅小区为所述UE的辅小区中除所述第一辅小区之外的辅小区；
    所述目标事件为波束失败BF或无线链路失败RLF。
  65. 根据权利要求64所述的网络设备，其中，所述接收模块，具体用于在所述第二小区上，通过第一载体从所述UE接收所述第一小区的无线链路恢复请求；
    其中，所述第一载体包括以下至少一项：目标随机接入信道RACH，目标调度请求，目标媒体接入控制-控制单元MAC CE。
  66. 根据权利要求65所述的网络设备，其中，在所述第一载体包括所述目标调度请求的情况下，所述目标调度请求为未关联候选波束参考信号的调度请求；或者，所述目标调度请求为所述UE未检测到关联候选波束参考信号的调度请求。
  67. 根据权利要求65所述的网络设备，其中，在所述第一载体包括所述目标MAC CE的情况下，所述接收模块，具体用于若所述第二小区存在第一上行资源，则在所述第一上行资源上，通过所述目标MAC CE从所述UE接收所述第一小区的无线链路恢复请求。
  68. 根据权利要求65所述的网络设备，其中，在所述第一载体包括所述目标MAC CE的情况下，所述接收模块，还用于在所述在所述第二小区上，通过第一载体从所述UE接收所述第一小区的无线链路恢复请求之前，从所述UE接收第一调度请求。
  69. 根据权利要求68所述的网络设备，其中，所述第一调度请求满足以下任意一项：
    用于恢复所述第一小区的无线链路的调度请求，用于恢复任意辅小区的无线链路的调度请求。
  70. 根据权利要求64所述的网络设备，其中，所述网络设备还包括：发送模块；
    所述发送模块，用于在所述在UE的第二小区上，从所述UE接收所述UE的第一小区的无线链路恢复请求之前，向所述UE发送第一目标配置信息；
    其中，所述第一目标配置信息用于恢复所述第一小区的无线链路。
  71. 根据权利要求70所述的网络设备，其中，所述接收模块，具体用于根据所述第一目标配置信息，在所述第二小区上，从所述UE接收所述第一小区的无线链路恢复请求。
  72. 根据权利要求64所述的网络设备，其中，所述网络设备还包括：发送模块；
    所述发送模块，用于在所述在UE的第二小区上，从所述UE接收所述UE的第一小区的无线链路恢复请求之后，在第三小区上，向所述UE发送所述第一小区的无线链路恢复响应；
    所述第三小区为所述第二小区中的至少一个小区。
  73. 根据权利要求72所述的网络设备，其中，所述发送模块，还用于在所述在第三小区上，向所述UE发送所述第一小区的无线链路恢复响应之前，向所述UE发送第二目标配置信息；
    其中，所述第二目标配置信息用于恢复所述第一小区的无线链路。
  74. 根据权利要求73所述的网络设备，其中，所述发送模块，具体用于根据所述第二目标配置信息，在所述第三小区上，向所述UE发送所述第一小区的无线链路恢复响应。
  75. 根据权利要求64所述的网络设备，其中，所述网络设备还包括：发送模块；
    所述发送模块，用于在所述在UE的第二小区上，从所述UE接收所述UE的第一小区的无线链路恢复请求之前，向所述UE发送目标检测资源。
  76. 根据权利要求75所述的网络设备，其中，所述目标检测资源包括以下至少一项：为所述主小区配置的第一检测资源，为所述第一辅小区配置的第二检测资源。
  77. 一种用户设备UE，包括处理器、存储器及存储在所述存储器上并可在所述处理器上运行的计算机程序，所述计算机程序被所述处理器执行时实现如权利要求1至25中任一项所述的无线链路恢复方法的步骤。
  78. 一种用户设备UE，包括处理器、存储器及存储在所述存储器上并可在所述处理器上运行的计算机程序，所述计算机程序被所述处理器执行时实现如权利要求26至38中任一项所述的无线链路恢复方法的步骤。
  79. 一种计算机可读存储介质，所述计算机可读存储介质上存储计算机程序，所述计算机程序被处理器执行时实现如权利要求1至38中任一项所述的无线链路恢复方法的步骤。
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