WO2020061869A1 - 一种链路恢复方法及装置、通信设备 - Google Patents

一种链路恢复方法及装置、通信设备 Download PDF

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Publication number
WO2020061869A1
WO2020061869A1 PCT/CN2018/107804 CN2018107804W WO2020061869A1 WO 2020061869 A1 WO2020061869 A1 WO 2020061869A1 CN 2018107804 W CN2018107804 W CN 2018107804W WO 2020061869 A1 WO2020061869 A1 WO 2020061869A1
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Prior art keywords
cell
signal
node
signal corresponding
prach resource
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PCT/CN2018/107804
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English (en)
French (fr)
Inventor
尤心
史志华
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Oppo广东移动通信有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Priority to CN201880092406.3A priority Critical patent/CN112272926B/zh
Priority to PCT/CN2018/107804 priority patent/WO2020061869A1/zh
Priority to TW108134948A priority patent/TW202021301A/zh
Publication of WO2020061869A1 publication Critical patent/WO2020061869A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access, e.g. scheduled or random access

Definitions

  • the embodiments of the present application relate to the field of mobile communication technologies, and in particular, to a link recovery method and device, and a communication device.
  • a beam failure recovery (BFR) procedure (or a link recovery process) is defined.
  • BFR beam failure recovery
  • PSCell Primary Cell
  • SCell Secondary Cell
  • a beam failure (or a link failure) occurs, how to perform beam failure recovery (or a link recovery) on the SCell is a problem that needs to be solved.
  • the embodiments of the present application provide a link recovery method and device, and a communication device.
  • the first cell performs a link recovery process, where the link recovery process is used to recover a target link of the second cell.
  • the link recovery device provided in the embodiment of the present application is applied to a first cell, and the device includes:
  • a link recovery unit is configured to perform a link recovery process, wherein the link recovery process is used to recover a target link of a second cell.
  • the communication device provided in the embodiment of the present application includes a processor and a memory.
  • the memory is used to store a computer program
  • the processor is used to call and run the computer program stored in the memory to execute the foregoing link recovery method.
  • the network device provided in the embodiment of the present application includes a processor and a memory.
  • the memory is used to store a computer program
  • the processor is used to call and run the computer program stored in the memory to execute the foregoing link recovery method.
  • the chip provided in the embodiment of the present application is used to implement the foregoing link recovery method.
  • the chip includes a processor for invoking and running a computer program from a memory, so that a device installed with the chip executes the foregoing link recovery method.
  • the computer-readable storage medium provided in the embodiments of the present application is used to store a computer program, and the computer program causes a computer to execute the foregoing link restoration method.
  • the computer program product provided in the embodiment of the present application includes computer program instructions, and the computer program instructions cause a computer to execute the foregoing link restoration method.
  • the computer program provided in the embodiment of the present application when run on a computer, causes the computer to execute the above-mentioned link recovery method.
  • FIG. 1 is a schematic diagram of a communication system architecture according to an embodiment of the present application.
  • FIG. 2 is a schematic flowchart of a link recovery method according to an embodiment of the present application.
  • FIG. 3 is a schematic structural composition diagram of a link recovery device according to an embodiment of the present application.
  • FIG. 4 is a schematic structural diagram of a communication device according to an embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of a chip according to an embodiment of the present application.
  • FIG. 6 is a schematic block diagram of a communication system according to an embodiment of the present application.
  • GSM Global System
  • CDMA Code Division Multiple Access
  • Wideband Code Division Multiple Access Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • UMTS Universal Mobile Telecommunication System
  • WiMAX Worldwide Interoperability for Microwave Access
  • the communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with the terminal 120 (or a communication terminal or terminal).
  • the network device 110 may provide communication coverage for a specific geographic area, and may communicate with terminals located within the coverage area.
  • the network device 110 may be a base station (Base Transceiver Station, BTS) in a GSM system or a CDMA system, or a base station (NodeB, NB) in a WCDMA system, or an evolved base station in an LTE system.
  • BTS Base Transceiver Station
  • NodeB NodeB
  • the network device may be a mobile switching center, relay station, access point, vehicle equipment, Wearable devices, hubs, switches, bridges, routers, network-side devices in 5G networks, or network devices in public land mobile networks (PLMN) that will evolve in the future.
  • PLMN public land mobile networks
  • the communication system 100 further includes at least one terminal 120 located within a coverage area of the network device 110.
  • terminal used herein includes, but is not limited to, connection via a wired line, such as via a Public Switched Telephone Network (PSTN), Digital Subscriber Line (DSL), digital cable, direct cable connection; And / or another data connection / network; and / or via a wireless interface, such as for cellular networks, wireless local area networks (WLAN), digital television networks such as DVB-H networks, satellite networks, AM-FM A broadcast transmitter; and / or another terminal device configured to receive / transmit communication signals; and / or an Internet of Things (IoT) device.
  • PSTN Public Switched Telephone Network
  • DSL Digital Subscriber Line
  • WLAN wireless local area networks
  • DVB-H networks digital television networks
  • satellite networks satellite networks
  • AM-FM A broadcast transmitter AM-FM A broadcast transmitter
  • IoT Internet of Things
  • a terminal configured to communicate through a wireless interface may be referred to as a "wireless communication terminal", a “wireless terminal”, or a “mobile terminal”.
  • mobile terminals include, but are not limited to, satellite or cellular phones; personal communications systems (PCS) terminals that can combine cellular radiotelephones with data processing, facsimile, and data communications capabilities; can include radiotelephones, pagers, Internet / internal PDA with network access, web browser, notepad, calendar, and / or Global Positioning System (GPS) receiver; and conventional laptop and / or palm-type receivers or others including radiotelephone transceivers Electronic device.
  • PCS personal communications systems
  • GPS Global Positioning System
  • a terminal can refer to an access terminal, user equipment (UE), user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user Device.
  • the access terminal can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Processing (PDA), and wireless communication.
  • the terminals 120 may perform terminal direct connection (Device to Device, D2D) communication.
  • D2D Terminal to Device
  • the 5G system or the 5G network may also be referred to as a New Radio (NR) system or an NR network.
  • NR New Radio
  • FIG. 1 exemplarily shows one network device and two terminals.
  • the communication system 100 may include multiple network devices and each network device may include other numbers of terminals within its coverage area. Embodiments of the present application This is not limited.
  • the communication system 100 may further include other network entities such as a network controller, a mobility management entity, and the like in this embodiment of the present application is not limited thereto.
  • network entities such as a network controller, a mobility management entity, and the like in this embodiment of the present application is not limited thereto.
  • a communication device may include a network device 110 and a terminal 120 having a communication function, and the network device 110 and the terminal 120 may be specific devices described above, and are not described herein again; communication
  • the device may also include other devices in the communication system 100, such as other network entities such as a network controller and a mobile management entity, which are not limited in the embodiments of the present application.
  • MCG primary cell group
  • SCG Secondary Cell Group
  • PCell primary cell
  • PSCell primary cell in the SCG
  • SpCell special cell
  • the beam failure detection is determined by receiving a beam failure event (Beam failure instance) reported by the physical layer and maintaining a counter.
  • Beam failure instance a beam failure event reported by the physical layer
  • the UE selects a new beam that satisfies a predetermined / configuration threshold based on the measurement results of the CSI-RS and / or SSB.
  • the measurement result can be the reference signal received power of the physical layer (L1-RSRP, Layer1-Reference SignalReceiving Power), the reference signal reception quality of the physical layer (L1-RSRQ, Layer1-Reference SignalReceiving Quality), and the signal of the physical layer And interference plus noise ratio (L1-SINR, Layer1-Signal to Interference plus Noise Ratio).
  • L1-RSRP Layer1-Reference SignalReceiving Power
  • L1-RSRQ Layer1-Reference SignalReceiving Quality
  • L1-SINR Layer1-Signal to Interference plus Noise Ratio
  • step 3 If a new beam that meets the predetermined / configuration threshold is selected, step 3) is performed;
  • the UE selects a new physical random access channel (PRACH, Physical Random Access Channel) corresponding to the beam to transmit signals to the network, or reports a new beam of its choice through a physical uplink control channel (PUCCH, Physical Uplink Control Channel).
  • PRACH Physical Random Access Channel
  • PUCCH Physical Uplink Control Channel
  • the beam failure is determined based on the quality of the beam associated with the PDCCH. Further, the quality of the beam is determined by the reference signal corresponding to the beam. Examples include CSI-RS and / or SSB.
  • the UE uses a random access method to tell the base station which downlink beam to use to send a random access response (RAR, Random Access Response) to recover the downlink beam.
  • RAR Random Access Response
  • the preamble is configured with SSB as the granularity. Based on this, the UE first selects an SSB and / or CSI-RS that meets a predetermined / configuration threshold (here, there is a correspondence between SSB and CSI-RS ), And use the preamble corresponding to the SSB and PRACH resources to send MSG1, that is, after receiving the preamble, the gNB knows which beam corresponding to the SSB is used to feed back the RAR.
  • CFRA refers to BFR-based non-competitive random access
  • CBRA refers to BFR-based competitive random access. (CBRA, Contention Based, Random Access).
  • CFRA BFR Radio Resource Control (RRC, Radio Resource Control) is configured with a CFRA resource (ie, a dedicated PRACH resource) associated with the SSB.
  • the CFRA resource is used for BFR and has an SSB that meets the threshold.
  • the RRC is configured with a CFRA resource (ie, a dedicated PRACH resource) associated with the SSB.
  • the CFRA resource is used for BFR, but the SSB does not meet the threshold;
  • Beam failure recovery timer (Beam failure recovery timer) expires, the UE can only use CBRA and BFR.
  • CBRA and BFR RRC is not configured with beam failure recovery configuration information (BeamFailureRecoveryConfig), and the UE can only use CBRA and BFR.
  • BeamFailureRecoveryConfig beam failure recovery configuration information
  • MAC Media Access Control
  • the UE will increase the counter BFI_COUNTER by 1 and restart the beam failure detection timer (beamFailureDetectionTimer);
  • the base station network will configure beamFailureRecoveryConfigIE, and the UE uses parameters in this IE for random access;
  • beamFailureRecoveryConfig if beamFailureRecoveryConfig is configured, use the powerRampingStep, preambleReceivedTargetPower, and preambleTransMax configured in the IE for random access; if not, use common RACH procedure.
  • the BFR procedure is considered successful.
  • FIG. 2 is a schematic flowchart of a link restoration method according to an embodiment of the present application. As shown in FIG. 2, the link restoration method includes the following steps:
  • Step 201 The first cell performs a link recovery process, wherein the link recovery process is used to recover a target link of the second cell.
  • the first cell refers to PCell or PSCell
  • the second cell refers to SCell.
  • the first cell refers to PCell and the second cell refers to SCell.
  • SCG The first cell refers to the PSCell
  • the second cell refers to the SCell.
  • PCell refers to the primary cell in the MCG
  • PSCell refers to the primary cell in the SCG.
  • PCell and PSCell can be collectively referred to as SpCell.
  • the second cell may perform link recovery (also called BFR) by falling back to the first cell.
  • link recovery also called BFR
  • the first cell performs a link recovery process:
  • the second cell is configured with a second PRACH resource, and the SSB and / or reference signal associated with the second PRACH resource does not meet the first threshold value;
  • the second cell is not configured with a second PRACH resource, and a link failure occurs in the second cell;
  • the second cell is configured with a second PRACH resource, and the number of random access failures for link recovery on the second cell exceeds a second threshold;
  • the second cell is configured with a second PRACH resource, and a first timer for link recovery on the second cell times out;
  • the second cell is configured with a second PRACH resource, and a random access process for link recovery on the second cell fails;
  • the second PRACH resource is used for a non-contention random access process.
  • the reference signal may be a CSI-RS, and the CSI-RS and SSB have a corresponding relationship.
  • the network side uses SSB as the granularity and configures one or more preambles for UE access, and the network side may also be configured with The second PRACH resource associated with the SSB.
  • the second PRACH resource is used for a non-competitive random access process. Therefore, the second PRACH resource may be called a CFRA resource.
  • the network side will also configure a first PRACH resource associated with the SSB.
  • the first PRACH resource is used for a competitive random access process. Therefore, the first PRACH resource may be called a CBRA resource.
  • the network side can be configured with only CBRA resources and no CFRA resources. Alternatively, the network side can configure both CBRA resources and CFRA resources.
  • the second PRACH resource (that is, the CFRA resource) is used for the link recovery (that is, BFR) process.
  • the CFRA resource can be used for chaining.
  • the second cell needs to fall back to the first cell to perform the link recovery process:
  • the second cell If the second cell is configured with a second PRACH resource, but the SSB and / or CSI-RS associated with the second PRACH resource does not meet the first threshold, the second cell falls back to the first The cell performs a link recovery process;
  • the second cell If the second cell is configured with a second PRACH resource, and the number of random access failures for link recovery in the second cell exceeds a second threshold, the second cell falls back to the first The cell performs a link recovery process;
  • the second cell falls back to the first cell for execution Link recovery process
  • the second cell falls back to the first cell to perform link recovery process.
  • the first threshold value, the second threshold value, and the duration of the first timer may be configured by the network, or pre-configured, or agreed by the protocol.
  • the second cell falls back to the first cell to perform a link recovery process.
  • the link recovery process performed by the first cell may be specifically implemented in the following ways:
  • Method 1 The first cell determines a first signal corresponding to the second cell, and the first cell notifies a first node of the first signal corresponding to the second cell based on a contention-based random access procedure, and the The first signal is used by the first node to restore a target link of the second cell.
  • the first cell sends the MSG1 associated with the first signal to the first node on the first PRACH resource, and the first signal is used by the first node to send the MSG1 associated with the first signal.
  • MSG2 wherein the first PRACH resource is used for a contention-based random access procedure.
  • the first signal refers to SSB and / or CSI-RS
  • the first signal that the first cell determines to correspond to the second cell refers to that the first cell determines to determine the SSB and And / or index information of the CSI-RS.
  • the first node is a base station, such as a gNB in 5G, or an eNB in 4G.
  • the first cell determines the SSB and / or CSI-RS index information of the second cell, based on the SSB and / or CSI-RS index information, determines the premble and CBRA resources associated with it.
  • Send a premble to the base station that is, send MSG1.
  • the base station can determine the associated SSB and / or CSI-RS index information from the premble, and send a PDCCH based on the SSB and / or CSI-RS index information.
  • the DCI in the PDCCH is used to schedule transmission of RAR.
  • PDSCH the first cell and / or the second cell will receive the PDCCH sent by the base station. If the PDCCH is successfully received, it indicates that the link reply was successful (that is, the BFR was successful). The first cell and / or the second cell are based on PDCCH scheduling, receiving RAR from PDSCH.
  • Manner 2 The first cell determines a first signal corresponding to the second cell, and the first cell notifies the first node of the first signal corresponding to the second cell based on a non-competitive random access process, so The first signal is used by the first node to restore a target link of the second cell.
  • the first cell sends the MSG1 associated with the first signal to the first node on the second PRACH resource, and the first signal is used by the first node to send the MSG1 associated with the first signal.
  • MSG2 wherein the second PRACH resource is used for a non-contention random access procedure.
  • the second method is the same as the second method.
  • the difference is that the second method initiates MSG1 based on the second PRACH resource (that is, the CFRA resource). It should be noted that the second method can only be used when the CFRA resource is configured on the first cell To implement the link recovery process.
  • Method 3 The first cell determines a first signal corresponding to the second cell, and the first cell notifies the first node of the first cell through a media access control control unit (MAC CE, Media Access Control Element).
  • MAC CE Media Access Control Control Element
  • Method 4 The first cell determines a first signal corresponding to the second cell, and the first cell notifies a first node of the first signal corresponding to the second cell through uplink control signaling, and the first cell The signal is used by the first node to restore a target link of the second cell.
  • the uplink control signaling is carried in the PUCCH, and the uplink control signaling is, for example, a scheduling request (SR, Scheduling Request) signaling.
  • SR scheduling request
  • Scheduling Request Scheduling Request
  • the first node when the first cell notifies the first node of a first signal corresponding to the second cell, the first node also notifies the first node that the first signal is used to recover the first signal.
  • Target link of two cells the base station can distinguish whether the SSB and / or CSI-RS index information reported by the first cell is recovered for the link of the second cell or for the link of the first cell.
  • the first cell determining the first signal corresponding to the second cell may be implemented in the following manners:
  • Method 1 the first cell and the second cell belong to the same frequency band
  • the first cell uses the first signal corresponding to the first cell as the first signal corresponding to the second cell;
  • the first cell determines a first signal corresponding to the second cell based on a measurement result of an SSB and / or a reference signal.
  • the first cell may report the SSB and / or CSI-RS index information at which it currently resides to the base station.
  • the first cell selects the SSB and / or CSI-RS whose measurement results meet the threshold by measuring the SSB and / or CSI-RS, and reports the index information of the SSB and / or CSI-RS that meets the threshold to the base station.
  • the measurement result may be at least one of L1-RSRP, L1-RSRQ, and L1-SINR.
  • the first cell receives first indication information sent by a second cell, and the first indication information is used to instruct the second cell to determine the second cell based on a measurement result of an SSB and / or a reference signal.
  • the first signal corresponding to the cell.
  • the second cell itself measures the SSB and / or CSI-RS, selects the SSB and / or CSI-RS whose measurement results meet the threshold, and reports the index information of the SSB and / or CSI-RS that meet the threshold to the first cell, The index information of the SSB and / or CSI-RS is reported to the base station through the first cell.
  • the first cell may Select the SSB and / or CSI-RS index information with the best quality, or report all the SSB and / or CSI-RS index information that meet the threshold.
  • FIG. 3 is a schematic structural composition diagram of a link recovery device according to an embodiment of the present application, which is applied to a first cell. As shown in FIG. 3, the device includes:
  • the link recovery unit 30 is configured to perform a link recovery process, where the link recovery process is used to recover a target link of a second cell.
  • the link recovery unit 30 includes:
  • a determining subunit 301 configured to determine a first signal corresponding to the second cell
  • a notification subunit 302 configured to notify a first node of a first signal corresponding to the second cell based on a contention-based random access procedure, where the first signal is used by the first node to recover a target of the second cell link.
  • the notification subunit 302 is configured to send the MSG1 associated with the first signal to the first node on a first PRACH resource, and the first signal is used for the first node Sending MSG2 associated with the first signal;
  • the first PRACH resource is used for a contention-based random access process.
  • the link recovery unit 30 includes:
  • a determining subunit 301 configured to determine a first signal corresponding to the second cell
  • a notification subunit 302 configured to notify a first node of a first signal corresponding to the second cell based on a non-competitive random access procedure, where the first signal is used by the first node to recover the second cell The target link.
  • the notification subunit 302 is configured to send the MSG1 associated with the first signal to the first node on a second PRACH resource, and the first signal is used for the first node Sending MSG2 associated with the first signal;
  • the second PRACH resource is used for a non-contention random access process.
  • the link recovery unit 30 includes:
  • a determining subunit 301 configured to determine a first signal corresponding to the second cell
  • the notification subunit 302 is configured to notify a first node of a first signal corresponding to the second cell through a MAC CE, where the first signal is used by the first node to restore a target link of the second cell.
  • the link recovery unit includes:
  • a determining subunit 301 configured to determine a first signal corresponding to the second cell
  • a notification subunit 302 configured to notify a first node of a first signal corresponding to the second cell through uplink control signaling, and the first signal is used by the first node to restore a target link of the second cell .
  • the notification subunit 302 is configured to notify the first node of a first signal corresponding to the second cell, and further notify the first node of the first signal. And used to restore the target link of the second cell.
  • the determining subunit 301 is configured to use a first signal corresponding to the first cell as a first signal corresponding to the second cell; or based on measurement of an SSB and / or a reference signal As a result, a first signal corresponding to the second cell is determined;
  • the first cell and the second cell belong to the same frequency band.
  • the determining subunit 301 is configured to receive first indication information sent by a second cell, where the first indication information is used to instruct the second cell to measure based on an SSB and / or a reference signal As a result, the first signal corresponding to the second cell is determined.
  • the link recovery unit 30 when at least one of the following conditions is satisfied, performs a link recovery process:
  • the second cell is configured with a second PRACH resource, and the SSB and / or reference signal associated with the second PRACH resource does not meet the first threshold value;
  • the second cell is not configured with a second PRACH resource, and a link failure occurs in the second cell;
  • the second cell is configured with a second PRACH resource, and the number of random access failures for link recovery on the second cell exceeds a second threshold;
  • the second cell is configured with a second PRACH resource, and a first timer for link recovery on the second cell times out;
  • the second cell is configured with a second PRACH resource, and a random access process for link recovery on the second cell fails;
  • the second PRACH resource is used for a non-contention random access process.
  • FIG. 4 is a schematic structural diagram of a communication device 600 according to an embodiment of the present application.
  • the communication device may be a terminal or a network device.
  • the communication device 600 shown in FIG. 4 includes a processor 610, and the processor 610 may call and run a computer program from a memory to implement the method in the embodiment of the present application.
  • the communication device 600 may further include a memory 620.
  • the processor 610 may call and run a computer program from the memory 620 to implement the method in the embodiment of the present application.
  • the memory 620 may be a separate device independent of the processor 610, or may be integrated in the processor 610.
  • the communication device 600 may further include a transceiver 630, and the processor 610 may control the transceiver 630 to communicate with other devices, and specifically, may send information or data to other devices, or receive other Information or data sent by the device.
  • the transceiver 630 may include a transmitter and a receiver.
  • the transceiver 630 may further include antennas, and the number of antennas may be one or more.
  • the communication device 600 may specifically be a network device according to the embodiment of the present application, and the communication device 600 may implement a corresponding process implemented by the network device in each method of the embodiment of the present application. For brevity, details are not described herein again. .
  • the communication device 600 may specifically be a mobile terminal / terminal of the embodiment of the present application, and the communication device 600 may implement the corresponding process implemented by the mobile terminal / terminal in each method of the embodiment of the present application. For simplicity, in This will not be repeated here.
  • FIG. 5 is a schematic structural diagram of a chip according to an embodiment of the present application.
  • the chip 700 shown in FIG. 5 includes a processor 710, and the processor 710 may call and run a computer program from a memory to implement the method in the embodiment of the present application.
  • the chip 700 may further include a memory 720.
  • the processor 710 may call and run a computer program from the memory 720 to implement the method in the embodiment of the present application.
  • the memory 720 may be a separate device independent of the processor 710, or may be integrated in the processor 710.
  • the chip 700 may further include an input interface 730.
  • the processor 710 may control the input interface 730 to communicate with other devices or chips. Specifically, the processor 710 may obtain information or data sent by the other devices or chips.
  • the chip 700 may further include an output interface 740.
  • the processor 710 may control the output interface 740 to communicate with other devices or chips. Specifically, the processor 710 may output information or data to the other devices or chips.
  • the chip may be applied to the network device in the embodiment of the present application, and the chip may implement the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the chip may be applied to the network device in the embodiment of the present application, and the chip may implement the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the chip can be applied to the mobile terminal / terminal in the embodiments of the present application, and the chip can implement the corresponding process implemented by the mobile terminal / terminal in each method of the embodiments of the present application. To repeat.
  • the chip mentioned in the embodiments of the present application may also be referred to as a system-level chip, a system chip, a chip system or a system-on-chip.
  • FIG. 6 is a schematic block diagram of a communication system 900 according to an embodiment of the present application. As shown in FIG. 6, the communication system 900 includes a terminal 910 and a network device 920.
  • the terminal 910 may be used to implement the corresponding functions implemented by the terminal in the foregoing method
  • the network device 920 may be used to implement the corresponding functions implemented by the network device in the foregoing method.
  • details are not described herein again.
  • the processor in the embodiment of the present application may be an integrated circuit chip and has a signal processing capability.
  • each step of the foregoing method embodiment may be completed by using an integrated logic circuit of hardware in a processor or an instruction in a form of software.
  • the above processor may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), an off-the-shelf programmable gate array (Field, Programmable Gate Array, FPGA), or other Programming logic devices, discrete gate or transistor logic devices, discrete hardware components.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA off-the-shelf programmable gate array
  • Various methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed.
  • a general-purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
  • the steps of the method disclosed in combination with the embodiments of the present application may be directly implemented by a hardware decoding processor, or may be performed by using a combination of hardware and software modules in the decoding processor.
  • the software module may be located in a mature storage medium such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, or an electrically erasable programmable memory, a register, and the like.
  • the storage medium is located in a memory, and the processor reads the information in the memory and completes the steps of the foregoing method in combination with its hardware.
  • the memory in the embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), and an electronic memory. Erase programmable read-only memory (EPROM, EEPROM) or flash memory.
  • the volatile memory may be Random Access Memory (RAM), which is used as an external cache.
  • RAM Static Random Access Memory
  • DRAM Dynamic Random Access Memory
  • Synchronous Dynamic Random Access Memory Synchronous Dynamic Random Access Memory
  • SDRAM double data rate synchronous dynamic random access memory
  • Double SDRAM, DDR SDRAM enhanced synchronous dynamic random access memory
  • Enhanced SDRAM, ESDRAM synchronous connection dynamic random access memory
  • Synchronous DRAM Synchronous Dynamic Random Access Memory
  • Enhanced SDRAM Enhanced SDRAM, ESDRAM
  • synchronous connection dynamic random access memory Synchrobus RAM, SLDRAM
  • Direct Rambus RAM Direct Rambus RAM
  • the memory in the embodiment of the present application may also be a static random access memory (static RAM, SRAM), a dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (Double SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct RAMbus RAM, DR RAM) and so on. That is, the memories in the embodiments of the present application are intended to include, but not limited to, these and any other suitable types of memories.
  • An embodiment of the present application further provides a computer-readable storage medium for storing a computer program.
  • the computer-readable storage medium can be applied to the network device in the embodiment of the present application, and the computer program causes the computer to execute the corresponding process implemented by the network device in each method in the embodiment of the present application. No longer.
  • the computer-readable storage medium may be applied to a mobile terminal / terminal in the embodiments of the present application, and the computer program causes a computer to execute a corresponding process implemented by the mobile terminal / terminal in each method of the embodiments of the present application in order to Concise, I won't repeat them here.
  • An embodiment of the present application further provides a computer program product, including computer program instructions.
  • the computer program product can be applied to the network device in the embodiment of the present application, and the computer program instruction causes the computer to execute a corresponding process implemented by the network device in each method in the embodiment of the present application. More details.
  • the computer program product can be applied to a mobile terminal / terminal in the embodiments of the present application, and the computer program instructions cause the computer to execute a corresponding process implemented by the mobile terminal / terminal in each method of the embodiments of the present application for the sake of brevity , Will not repeat them here.
  • the embodiment of the present application also provides a computer program.
  • the computer program may be applied to a network device in the embodiment of the present application.
  • the computer program When the computer program is run on a computer, the computer is caused to execute a corresponding process implemented by the network device in each method in the embodiment of the present application. , Will not repeat them here.
  • the computer program may be applied to a mobile terminal / terminal in the embodiment of the present application, and when the computer program is run on a computer, the computer is caused to execute a corresponding method implemented by the mobile terminal / terminal in each method of the embodiment of the present application.
  • the computer program may be applied to a mobile terminal / terminal in the embodiment of the present application, and when the computer program is run on a computer, the computer is caused to execute a corresponding method implemented by the mobile terminal / terminal in each method of the embodiment of the present application.
  • the disclosed systems, devices, and methods may be implemented in other ways.
  • the device embodiments described above are only schematic.
  • the division of the unit is only a logical function division.
  • multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, which may be electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, may be located in one place, or may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objective of the solution of this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist separately physically, or two or more units may be integrated into one unit.
  • the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the technical solution of this application is essentially a part that contributes to the existing technology or a part of the technical solution can be embodied in the form of a software product.
  • the computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in the embodiments of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory) ROM, random access memory (Random Access Memory, RAM), magnetic disks or optical disks and other media that can store program codes .

Abstract

本申请实施例提供一种链路恢复方法及装置、通信设备,包括:第一小区执行链路恢复过程,其中,所述链路恢复过程用于恢复第二小区的目标链路。

Description

一种链路恢复方法及装置、通信设备 技术领域
本申请实施例涉及移动通信技术领域,具体涉及一种链路恢复方法及装置、通信设备。
背景技术
在新空口(NR,New Radio)版本15(Rel-15)中,定义了波束失败恢复(BFR,Beam Failure Recovery)过程(或者叫链路恢复(Link recovery)过程)。然而,在Rel-15的设计中,只考虑了主辅小区(PSCell,Primary Secondary Cell)上做波束失败恢复过程,没有考虑辅小区(SCell,Secondary Cell)上做波束失败恢复过程,一旦SCell上发生了波束失败(或者叫链路失败),如何对SCell进行波束失败恢复(或者叫链路恢复)是需要解决的问题。
发明内容
本申请实施例提供一种链路恢复方法及装置、通信设备。
本申请实施例提供的链路恢复方法,包括:
第一小区执行链路恢复过程,其中,所述链路恢复过程用于恢复第二小区的目标链路。
本申请实施例提供的链路恢复装置,应用于第一小区,所述装置包括:
链路恢复单元,用于执行链路恢复过程,其中,所述链路恢复过程用于恢复第二小区的目标链路。
本申请实施例提供的通信设备,包括处理器和存储器。该存储器用于存储计算机程序,该处理器用于调用并运行该存储器中存储的计算机程序,执行上述的链路恢复方法。
本申请实施例提供的网络设备,包括处理器和存储器。该存储器用于存储计算机程序,该处理器用于调用并运行该存储器中存储的计算机程序,执行上述的链路恢复方法。
本申请实施例提供的芯片,用于实现上述的链路恢复方法。
具体地,该芯片包括:处理器,用于从存储器中调用并运行计算机程序,使得安装有该芯片的设备执行上述的链路恢复方法。
本申请实施例提供的计算机可读存储介质,用于存储计算机程序,该计算机程序使得计算机执行上述的链路恢复方法。
本申请实施例提供的计算机程序产品,包括计算机程序指令,该计算机程序指令使得计算机执行上述的链路恢复方法。
本申请实施例提供的计算机程序,当其在计算机上运行时,使得计算机执行上述的链路恢复方法。
通过上述技术方案,明确了在何种情况下从第二小区(如SCell)回退至由第一小区(如PScell)来为该第二小区(如SCell)进行链路恢复,进一步,明确了第一小区(如PScell)如何为第二小区(如SCell)进行链路恢复,从而保障了下行链路的有效性。
附图说明
此处所说明的附图用来提供对本申请的进一步理解,构成本申请的一部分,本申请的示意性实施例及其说明用于解释本申请,并不构成对本申请的不当限定。在附图中:
图1是本申请实施例提供的一种通信系统架构的示意性图;
图2为本申请实施例提供的链路恢复方法的流程示意图;
图3为本申请实施例提供的链路恢复装置的结构组成示意图;
图4是本申请实施例提供的一种通信设备示意性结构图;
图5是本申请实施例的芯片的示意性结构图;
图6是本申请实施例提供的一种通信系统的示意性框图。
具体实施方式
下面将结合本申请实施例中的附图,对本申请实施例中的技术方案进行描述,显然,所描述的实施例是本申请一部分实施例,而不是全部的实施例。基于本申请中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本申请保护的范围。
本申请实施例的技术方案可以应用于各种通信系统,例如:全球移动通讯(Global  System of Mobile communication,GSM)系统、码分多址(Code Division Multiple Access,CDMA)系统、宽带码分多址(Wideband Code Division Multiple Access,WCDMA)系统、通用分组无线业务(General Packet Radio Service,GPRS)、长期演进(Long Term Evolution,LTE)系统、LTE频分双工(Frequency Division Duplex,FDD)系统、LTE时分双工(Time Division Duplex,TDD)、通用移动通信系统(Universal Mobile Telecommunication System,UMTS)、全球互联微波接入(Worldwide Interoperability for Microwave Access,WiMAX)通信系统或5G系统等。
示例性的,本申请实施例应用的通信系统100如图1所示。该通信系统100可以包括网络设备110,网络设备110可以是与终端120(或称为通信终端、终端)通信的设备。网络设备110可以为特定的地理区域提供通信覆盖,并且可以与位于该覆盖区域内的终端进行通信。可选地,该网络设备110可以是GSM系统或CDMA系统中的基站(Base Transceiver Station,BTS),也可以是WCDMA系统中的基站(NodeB,NB),还可以是LTE系统中的演进型基站(Evolutional Node B,eNB或eNodeB),或者是云无线接入网络(Cloud Radio Access Network,CRAN)中的无线控制器,或者该网络设备可以为移动交换中心、中继站、接入点、车载设备、可穿戴设备、集线器、交换机、网桥、路由器、5G网络中的网络侧设备或者未来演进的公共陆地移动网络(Public Land Mobile Network,PLMN)中的网络设备等。
该通信系统100还包括位于网络设备110覆盖范围内的至少一个终端120。作为在此使用的“终端”包括但不限于经由有线线路连接,如经由公共交换电话网络(Public Switched Telephone Networks,PSTN)、数字用户线路(Digital Subscriber Line,DSL)、数字电缆、直接电缆连接;和/或另一数据连接/网络;和/或经由无线接口,如,针对蜂窝网络、无线局域网(Wireless Local Area Network,WLAN)、诸如DVB-H网络的数字电视网络、卫星网络、AM-FM广播发送器;和/或另一终端的被设置成接收/发送通信信号的装置;和/或物联网(Internet of Things,IoT)设备。被设置成通过无线接口通信的终端可以被称为“无线通信终端”、“无线终端”或“移动终端”。移动终端的示例包括但不限于卫星或蜂窝电话;可以组合蜂窝无线电电话与数据处理、传真以及数据通信能力的个人通信系统(Personal Communications System,PCS)终端;可以包括无线电电话、寻呼机、因特网/内联网接入、Web浏览器、记事簿、日历以及/或全球定位系统(Global Positioning System,GPS)接收器的PDA;以及常规膝上型和/或掌上型接收器或包括无线电电话收发器的其它电子装置。终端可以指接入终端、用户设备(User Equipment, UE)、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。接入终端可以是蜂窝电话、无绳电话、会话启动协议(Session Initiation Protocol,SIP)电话、无线本地环路(Wireless Local Loop,WLL)站、个人数字处理(Personal Digital Assistant,PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备、5G网络中的终端或者未来演进的PLMN中的终端等。
可选地,终端120之间可以进行终端直连(Device to Device,D2D)通信。
可选地,5G系统或5G网络还可以称为新无线(New Radio,NR)系统或NR网络。
图1示例性地示出了一个网络设备和两个终端,可选地,该通信系统100可以包括多个网络设备并且每个网络设备的覆盖范围内可以包括其它数量的终端,本申请实施例对此不做限定。
可选地,该通信系统100还可以包括网络控制器、移动管理实体等其他网络实体,本申请实施例对此不作限定。
应理解,本申请实施例中网络/系统中具有通信功能的设备可称为通信设备。以图1示出的通信系统100为例,通信设备可包括具有通信功能的网络设备110和终端120,网络设备110和终端120可以为上文所述的具体设备,此处不再赘述;通信设备还可包括通信系统100中的其他设备,例如网络控制器、移动管理实体等其他网络实体,本申请实施例中对此不做限定。
应理解,本文中术语“系统”和“网络”在本文中常被可互换使用。本文中术语“和/或”,仅仅是一种描述关联对象的关联关系,表示可以存在三种关系,例如,A和/或B,可以表示:单独存在A,同时存在A和B,单独存在B这三种情况。另外,本文中字符“/”,一般表示前后关联对象是一种“或”的关系。
为便于理解本申请实施例的技术方案,以下对本申请实施例涉及到的相关技术进行说明。
对于双连接(DC,Dual Connectivity)系统,为终端提供服务的有主小区组(MCG,Master Cell Group)和辅小区组(SCG,Secondary Cell Group),其中,MCG包括主小区(PCell,Primary Cell)和SCell,SCG包括PSCell和SCell。这里,PCell指MCG中的主小区,PSCell指SCG中的主小区。PCell和PSCell可以统称为专用小区(SpCell,Special Cell)。
Rel-15中,规定了SpCell的BFR过程,包括如下步骤:
1)波束失败检测(Beam failure detection)
这里,波束失败检测是通过接收物理层上报的波束失败事件(Beam failure instance)以及维护counter来确定的。
2)新候选波束选取(New candidate beam identification)
UE基于对CSI-RS和/或SSB的测量结果来选择满足预定/配置门限的新的波束(beam)。
这里,测量结果可以是物理层的参考信号接收功率(L1-RSRP,Layer1-Reference Signal Receiving Power)、物理层的参考信号接收质量(L1-RSRQ,Layer1-Reference Signal Receiving Quality)和物理层的信号与干扰加噪声比(L1-SINR,Layer1-Signal to Interference plus Noise Ratio)中的至少之一。
2.1)如果选择到满足预定/配置门限的新的beam,则执行步骤3);
2.2)如果没有选择到满足预定/配置门限的新的beam,则采用竞争的随机接入(contention-based Random Access)过程。
3)波束失败恢复请求传输(Beam failure recovery request transmission)
UE选择一个新的beam对应的物理随机接入信道(PRACH,Physical Random Access Channel)向网络传输信号,或者通过物理上行链路控制信道(PUCCH,Physical Uplink Control Channel)上报其选择的新的beam。
4)UE检测网络的响应
需要说明的是,UE根据网络的具体配置,上述步骤2)至步骤4)可能会重复执行。
通过上述步骤1)可以判定有没有发生波束失败(beam failure),其中,beam failure是针对和PDCCH关联的beam的质量来判定的,进一步,beam的质量通过beam对应的参考信号来判定,参考信号例如包括CSI-RS和/或SSB等。
在上述步骤3)中,UE通过随机接入的方式来告诉基站使用哪个下行beam来发送随机接入响应(RAR,Random Access Response)从而恢复下行beam。需要明确的是,前导码(preamble)是以SSB为粒度配置的,基于此,UE首先选择满足预定/配置门限的SSB和/或CSI-RS(这里,SSB与CSI-RS之间具有对应关系),并使用该SSB对应的preamble以及PRACH资源来发送MSG1,也就是说gNB收到preamble后,就知道了用哪个SSB对应的beam来反馈RAR。以下对基于BFR的随机接入过程进行描述,在以下描述中,CFRA BFR是指基于BFR的非竞争的随机接入(CFRA,Contention Free Random Access),CBRA BFR是指基于BFR的竞争的随机接入(CBRA,Contention Based  Random Access)。
1、CFRA BFR:无线资源控制(RRC,Radio Resource Control)配置了与SSB关联的CFRA资源(即专有PRACH资源),该CFRA资源用于BFR,且有满足门限值的SSB。
2、CFRA BFR到CBRA BFR的回落(CBRA BFR fallback from CFRA BFR),包括如下两种情况:
2.1)RRC配置了与SSB关联的CFRA资源(即专有PRACH资源),该CFRA资源用于BFR,但是没有满足门限值的SSB;
2.2)波束失败恢复定时器(Beam failure recovery Timer)超时,UE只能使用CBRA BFR。
3、CBRA BFR:RRC没有配置波束失败恢复配置信息(BeamFailureRecoveryConfig),UE只能使用CBRA BFR。
对于一个媒体接入控制(MAC,Media Access Control)实体:
- 每当物理层上报一个波束失败事件(beam failure instance),UE会为计数器BFI_COUNTER加1并重启波束失败检测定时器(beamFailureDetectionTimer);
- 若在beamFailureDetectionTimer运行期间BFI_COUNTER达到最大值,则认为波束失败(beam failure),并发起随机接入流程;
- 对于CFRA BFR,基站网络会配置beamFailureRecoveryConfigIE,UE使用该IE里的参数进行随机接入;
- 对于CBRA BFR,如果配置了beamFailureRecoveryConfig,则使用该IE里配置的powerRampingStep、preambleReceivedTargetPower、preambleTransMax进行随机接入;若没有,则使用common RACH procedure;
- 若该随机接入过程成功,则认为该BFR过程成功。
图2为本申请实施例提供的链路恢复方法的流程示意图,如图2所示,所述链路恢复方法包括以下步骤:
步骤201:第一小区执行链路恢复过程,其中,所述链路恢复过程用于恢复第二小区的目标链路。
本申请实施例中,第一小区是指PCell或PSCell,第二小区是指SCell,以DC场景为例,在MCG中,第一小区是指PCell,第二小区是指SCell,在SCG中,第一小区是指PSCell,第二小区是指SCell。这里,PCell指MCG中的主小区,PSCell指SCG中的主小区。PCell和PSCell可以统称为SpCell。
本申请实施例中,第二小区可以通过回退至第一小区来进行链路恢复(也叫做BFR)。其中,满足如下条件至少之一的情况下,所述第一小区执行链路恢复过程:
所述第二小区配置有第二PRACH资源,所述第二PRACH资源关联的SSB和/或参考信号未满足第一门限值;
所述第二小区未配置有第二PRACH资源,所述第二小区发生了链路失败;
所述第二小区配置有第二PRACH资源,所述第二小区上用于链路恢复的随机接入失败次数超过第二门限值;
所述第二小区配置有第二PRACH资源,所述第二小区上用于链路恢复的第一定时器超时;
所述第二小区配置有第二PRACH资源,所述第二小区上用于链路恢复的随机接入过程失败;
其中,所述第二PRACH资源用于非竞争的随机接入过程。
上述方案中,所述参考信号可以是CSI-RS,CSI-RS和SSB具有对应关系,进一步,网络侧以SSB为粒度,配置一个或多个preamble供UE接入使用,网络侧还可以配置与SSB关联的第二PRACH资源,这里,所述第二PRACH资源用于非竞争的随机接入过程,因此,所述第二PRACH资源可以叫做CFRA资源。此外,网络侧还会配置与SSB关联的第一PRACH资源,这里,所述第一PRACH资源用于竞争的随机接入过程,因此,所述第一PRACH资源可以叫做CBRA资源。需要明确的是,网络侧可以仅配置CBRA资源,不配置CFRA资源。或者,网络侧可以对CBRA资源和CFRA资源都进行配置。
本申请实施例中,第二PRACH资源(也即CFRA资源)用于链路恢复(也即BFR)过程,所述第二小区配置有第二PRACH资源的情况下,可以利用该CFRA资源进行链路恢复,然而,如下几种情况,所述第二小区需要回退到第一小区执行链路恢复过程:
1)如果所述第二小区配置了第二PRACH资源,但所述第二PRACH资源关联的SSB和/或CSI-RS未满足第一门限值,则所述第二小区回退到第一小区执行链路恢复过程;
2)如果所述第二小区未配置第二PRACH资源,且所述第二小区发生了链路失败,则所述第二小区回退到第一小区执行链路恢复过程;
3)如果所述第二小区配置了第二PRACH资源,且所述第二小区用于链路恢复的随机接入失败次数超过第二门限值,则所述第二小区回退到第一小区执行链路恢复过 程;
4)如果所述第二小区配置了第二PRACH资源,且所述第二小区上用于链路恢复的第一定时器(beamFailureRecoveryTimer)超时,则所述第二小区回退到第一小区执行链路恢复过程;
5)如果所述第二小区配置了第二PRACH资源,且所述第二小区上用于链路恢复的随机接入过程失败,则所述第二小区回退到第一小区执行链路恢复过程。
上述方案中,第一门限值、第二门限值、第一定时器的时长,可以是网络配置的,或者预配置的,或者协议约定的。
上述1)至5)种情况满足其中一种或多种时,所述第二小区回退到第一小区执行链路恢复过程。
本申请实施例中,所述第一小区执行链路恢复过程具体可以通过如下几种方式来实现:
方式一:所述第一小区确定所述第二小区对应的第一信号,所述第一小区基于竞争的随机接入过程向第一节点通知所述第二小区对应的第一信号,所述第一信号用于所述第一节点恢复所述第二小区的目标链路。
进一步,所述第一小区在第一PRACH资源上向所述第一节点发送与所述第一信号关联的MSG1,所述第一信号用于所述第一节点发送与所述第一信号关联的MSG2;其中,所述第一PRACH资源用于竞争的随机接入过程。
这里,所述第一信号是指SSB和/或CSI-RS,所述第一小区确定所述第二小区对应的第一信号是指所述第一小区确定所述第二小区对应的SSB和/或CSI-RS的索引(index)信息。
这里,所述第一节点为基站,例如5G中的gNB,或者4G中的eNB。
基于此,所述第一小区确定第二小区的SSB和/或CSI-RS index信息后,基于此SSB和/或CSI-RS index信息,确定与之关联的premble和CBRA资源,在该CBRA资源上向基站发送premble(也即发送MSG1)。
而后,基站接收到MSG1后,从premble可以确定出关联的SSB和/或CSI-RS index信息,基于该SSB和/或CSI-RS index信息,发送PDCCH,该PDCCH中的DCI用于调度传输RAR的PDSCH,第一小区和/或第二小区会接收到基站发送的PDCCH,如果成功接收到PDCCH,则表明链路回复成功(也即是BFR成功),第一小区和/或第二小区基于PDCCH的调度,从PDSCH上接收RAR。
方式二:所述第一小区确定所述第二小区对应的第一信号,所述第一小区基于非竞争的随机接入过程向第一节点通知所述第二小区对应的第一信号,所述第一信号用于所述第一节点恢复所述第二小区的目标链路。
进一步,所述第一小区在第二PRACH资源上向所述第一节点发送与所述第一信号关联的MSG1,所述第一信号用于所述第一节点发送与所述第一信号关联的MSG2;其中,所述第二PRACH资源用于非竞争的随机接入过程。
方式二与方式一同理,区别在于方式二是基于第二PRACH资源(也即CFRA资源)来发起MSG1,需要说明的是,仅当第一小区上配置有CFRA资源的情况,才可以使用方式二来实现链路恢复过程。
方式三:所述第一小区确定所述第二小区对应的第一信号,所述第一小区通过媒体接入控制控制单元(MAC CE,Media Access Control Control Element)向第一节点通知所述第二小区对应的第一信号,所述第一信号用于所述第一节点恢复所述第二小区的目标链路。
方式四:所述第一小区确定所述第二小区对应的第一信号,所述第一小区通过上行控制信令向第一节点通知所述第二小区对应的第一信号,所述第一信号用于所述第一节点恢复所述第二小区的目标链路。
这里,上行控制信令承载在PUCCH中,上行控制信令例如是调度请求(SR,Scheduling Request)信令。
可选地,所述第一小区向所述第一节点通知所述第二小区对应的第一信号时,还向所述第一节点通知所述第一信号的作用是用于恢复所述第二小区的目标链路的。如此,基站侧就可以区分出所述第一小区上报的SSB和/或CSI-RS index信息是针对第二小区的链路恢复的还是针对第一小区的链路恢复的。
本申请实施例中,所述第一小区确定所述第二小区对应的第一信号,可以通过以下方式实现:
方式一:所述第一小区和所述第二小区属于同一个频段
所述第一小区将所述第一小区对应的第一信号作为所述第二小区对应的第一信号;或者,
所述第一小区基于对SSB和/或参考信号的测量结果,确定所述第二小区对应的第一信号。
这里,如果所述第一小区和所述第二小区属于同一个频段(band),则所述第一小 区和所述第二小区对应的SSB和/或CSI-RS index信息相同,换句话说,所述第一小区和所述第二小区对应的beam index相同。这种情况下,所述第一小区可以将自己当前驻留的SSB和/或CSI-RS index信息上报给基站。或者,所述第一小区通过测量SSB和/或CSI-RS,选出测量结果满足门限的SSB和/或CSI-RS,将满足门限的SSB和/或CSI-RS的index信息上报给基站。这里,测量结果可以是L1-RSRP、L1-RSRQ和L1-SINR中的至少之一。
方式二:所述第一小区接收第二小区发送的第一指示信息,所述第一指示信息用于指示所述第二小区基于对SSB和/或参考信号的测量结果所确定所述第二小区对应的第一信号。
这里,第二小区自己测量SSB和/或CSI-RS,选出测量结果满足门限的SSB和/或CSI-RS,将满足门限的SSB和/或CSI-RS的index信息上报给第一小区,通过第一小区将SSB和/或CSI-RS的index信息上报给基站。
上述方案中,满足门限的SSB和/或CSI-RS的index信息可以有一个,也可以有多个,当满足门限的SSB和/或CSI-RS的index信息有多个时,第一小区可以选择上报质量最好的SSB和/或CSI-RS的index信息,或者将满足门限的SSB和/或CSI-RS的index信息全部上报。
图3为本申请实施例提供的链路恢复装置的结构组成示意图,应用于第一小区,如图3所示,所述装置包括:
链路恢复单元30,用于执行链路恢复过程,其中,所述链路恢复过程用于恢复第二小区的目标链路。
在一实施方式中,所述链路恢复单元30包括:
确定子单元301,用于确定所述第二小区对应的第一信号;
通知子单元302,用于基于竞争的随机接入过程向第一节点通知所述第二小区对应的第一信号,所述第一信号用于所述第一节点恢复所述第二小区的目标链路。
在一实施方式中,所述通知子单元302,用于在第一PRACH资源上向所述第一节点发送与所述第一信号关联的MSG1,所述第一信号用于所述第一节点发送与所述第一信号关联的MSG2;
其中,所述第一PRACH资源用于竞争的随机接入过程。
在一实施方式中,所述链路恢复单元30包括:
确定子单元301,用于确定所述第二小区对应的第一信号;
通知子单元302,用于基于非竞争的随机接入过程向第一节点通知所述第二小区对应的第一信号,所述第一信号用于所述第一节点恢复所述第二小区的目标链路。
在一实施方式中,所述通知子单元302,用于在第二PRACH资源上向所述第一节点发送与所述第一信号关联的MSG1,所述第一信号用于所述第一节点发送与所述第一信号关联的MSG2;
其中,所述第二PRACH资源用于非竞争的随机接入过程。
在一实施方式中,所述链路恢复单元30包括:
确定子单元301,用于确定所述第二小区对应的第一信号;
通知子单元302,用于通过MAC CE向第一节点通知所述第二小区对应的第一信号,所述第一信号用于所述第一节点恢复所述第二小区的目标链路。
在一实施方式中,所述链路恢复单元包括:
确定子单元301,用于确定所述第二小区对应的第一信号;
通知子单元302,用于通过上行控制信令向第一节点通知所述第二小区对应的第一信号,所述第一信号用于所述第一节点恢复所述第二小区的目标链路。
在一实施方式中,所述通知子单元302,用于向所述第一节点通知所述第二小区对应的第一信号时,还向所述第一节点通知所述第一信号的作用是用于恢复所述第二小区的目标链路的。
在一实施方式中,所述确定子单元301,用于将所述第一小区对应的第一信号作为所述第二小区对应的第一信号;或者,基于对SSB和/或参考信号的测量结果,确定所述第二小区对应的第一信号;
其中,所述第一小区和所述第二小区属于同一个频段。
在一实施方式中,所述确定子单元301,用于接收第二小区发送的第一指示信息,所述第一指示信息用于指示所述第二小区基于对SSB和/或参考信号的测量结果所确定所述第二小区对应的第一信号。
在一实施方式中,满足如下条件至少之一的情况下,所述链路恢复单元30执行链路恢复过程:
所述第二小区配置有第二PRACH资源,所述第二PRACH资源关联的SSB和/或参考信号未满足第一门限值;
所述第二小区未配置有第二PRACH资源,所述第二小区发生了链路失败;
所述第二小区配置有第二PRACH资源,所述第二小区上用于链路恢复的随机接入 失败次数超过第二门限值;
所述第二小区配置有第二PRACH资源,所述第二小区上用于链路恢复的第一定时器超时;
所述第二小区配置有第二PRACH资源,所述第二小区上用于链路恢复的随机接入过程失败;
其中,所述第二PRACH资源用于非竞争的随机接入过程。
本领域技术人员应当理解,本申请实施例的上述链路恢复装置的相关描述可以参照本申请实施例的链路恢复方法的相关描述进行理解。
图4是本申请实施例提供的一种通信设备600示意性结构图。该通信设备可以是终端,也可以是网络设备,图4所示的通信设备600包括处理器610,处理器610可以从存储器中调用并运行计算机程序,以实现本申请实施例中的方法。
可选地,如图4所示,通信设备600还可以包括存储器620。其中,处理器610可以从存储器620中调用并运行计算机程序,以实现本申请实施例中的方法。
其中,存储器620可以是独立于处理器610的一个单独的器件,也可以集成在处理器610中。
可选地,如图4所示,通信设备600还可以包括收发器630,处理器610可以控制该收发器630与其他设备进行通信,具体地,可以向其他设备发送信息或数据,或接收其他设备发送的信息或数据。
其中,收发器630可以包括发射机和接收机。收发器630还可以进一步包括天线,天线的数量可以为一个或多个。
可选地,该通信设备600具体可为本申请实施例的网络设备,并且该通信设备600可以实现本申请实施例的各个方法中由网络设备实现的相应流程,为了简洁,在此不再赘述。
可选地,该通信设备600具体可为本申请实施例的移动终端/终端,并且该通信设备600可以实现本申请实施例的各个方法中由移动终端/终端实现的相应流程,为了简洁,在此不再赘述。
图5是本申请实施例的芯片的示意性结构图。图5所示的芯片700包括处理器710,处理器710可以从存储器中调用并运行计算机程序,以实现本申请实施例中的方法。
可选地,如图5所示,芯片700还可以包括存储器720。其中,处理器710可以从存储器720中调用并运行计算机程序,以实现本申请实施例中的方法。
其中,存储器720可以是独立于处理器710的一个单独的器件,也可以集成在处理器710中。
可选地,该芯片700还可以包括输入接口730。其中,处理器710可以控制该输入接口730与其他设备或芯片进行通信,具体地,可以获取其他设备或芯片发送的信息或数据。
可选地,该芯片700还可以包括输出接口740。其中,处理器710可以控制该输出接口740与其他设备或芯片进行通信,具体地,可以向其他设备或芯片输出信息或数据。
可选地,该芯片可应用于本申请实施例中的网络设备,并且该芯片可以实现本申请实施例的各个方法中由网络设备实现的相应流程,为了简洁,在此不再赘述。
可选地,该芯片可应用于本申请实施例中的移动终端/终端,并且该芯片可以实现本申请实施例的各个方法中由移动终端/终端实现的相应流程,为了简洁,在此不再赘述。
应理解,本申请实施例提到的芯片还可以称为系统级芯片,系统芯片,芯片系统或片上系统芯片等。
图6是本申请实施例提供的一种通信系统900的示意性框图。如图6所示,该通信系统900包括终端910和网络设备920。
其中,该终端910可以用于实现上述方法中由终端实现的相应的功能,以及该网络设备920可以用于实现上述方法中由网络设备实现的相应的功能为了简洁,在此不再赘述。
应理解,本申请实施例的处理器可能是一种集成电路芯片,具有信号的处理能力。在实现过程中,上述方法实施例的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器可以是通用处理器、数字信号处理器(Digital Signal Processor,DSP)、专用集成电路(Application Specific Integrated Circuit,ASIC)、现成可编程门阵列(Field Programmable Gate Array,FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成,或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器,闪存、只读存储器,可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器,处理器读取存储器中的信息,结合其硬件完成上述方法的步骤。
可以理解,本申请实施例中的存储器可以是易失性存储器或非易失性存储器,或可包括易失性和非易失性存储器两者。其中,非易失性存储器可以是只读存储器(Read-Only Memory,ROM)、可编程只读存储器(Programmable ROM,PROM)、可擦除可编程只读存储器(Erasable PROM,EPROM)、电可擦除可编程只读存储器(Electrically EPROM,EEPROM)或闪存。易失性存储器可以是随机存取存储器(Random Access Memory,RAM),其用作外部高速缓存。通过示例性但不是限制性说明,许多形式的RAM可用,例如静态随机存取存储器(Static RAM,SRAM)、动态随机存取存储器(Dynamic RAM,DRAM)、同步动态随机存取存储器(Synchronous DRAM,SDRAM)、双倍数据速率同步动态随机存取存储器(Double Data Rate SDRAM,DDR SDRAM)、增强型同步动态随机存取存储器(Enhanced SDRAM,ESDRAM)、同步连接动态随机存取存储器(Synchlink DRAM,SLDRAM)和直接内存总线随机存取存储器(Direct Rambus RAM,DR RAM)。应注意,本文描述的系统和方法的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
应理解,上述存储器为示例性但不是限制性说明,例如,本申请实施例中的存储器还可以是静态随机存取存储器(static RAM,SRAM)、动态随机存取存储器(dynamic RAM,DRAM)、同步动态随机存取存储器(synchronous DRAM,SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM,DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM,ESDRAM)、同步连接动态随机存取存储器(synch link DRAM,SLDRAM)以及直接内存总线随机存取存储器(Direct Rambus RAM,DR RAM)等等。也就是说,本申请实施例中的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
本申请实施例还提供了一种计算机可读存储介质,用于存储计算机程序。
可选的,该计算机可读存储介质可应用于本申请实施例中的网络设备,并且该计算机程序使得计算机执行本申请实施例的各个方法中由网络设备实现的相应流程,为了简洁,在此不再赘述。
可选地,该计算机可读存储介质可应用于本申请实施例中的移动终端/终端,并且该计算机程序使得计算机执行本申请实施例的各个方法中由移动终端/终端实现的相应流程,为了简洁,在此不再赘述。
本申请实施例还提供了一种计算机程序产品,包括计算机程序指令。
可选的,该计算机程序产品可应用于本申请实施例中的网络设备,并且该计算机程 序指令使得计算机执行本申请实施例的各个方法中由网络设备实现的相应流程,为了简洁,在此不再赘述。
可选地,该计算机程序产品可应用于本申请实施例中的移动终端/终端,并且该计算机程序指令使得计算机执行本申请实施例的各个方法中由移动终端/终端实现的相应流程,为了简洁,在此不再赘述。
本申请实施例还提供了一种计算机程序。
可选的,该计算机程序可应用于本申请实施例中的网络设备,当该计算机程序在计算机上运行时,使得计算机执行本申请实施例的各个方法中由网络设备实现的相应流程,为了简洁,在此不再赘述。
可选地,该计算机程序可应用于本申请实施例中的移动终端/终端,当该计算机程序在计算机上运行时,使得计算机执行本申请实施例的各个方法中由移动终端/终端实现的相应流程,为了简洁,在此不再赘述。
本领域普通技术人员可以意识到,结合本文中所公开的实施例描述的各示例的单元及算法步骤,能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行,取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能,但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到,为描述的方便和简洁,上述描述的系统、装置和单元的具体工作过程,可以参考前述方法实施例中的对应过程,在此不再赘述。
在本申请所提供的几个实施例中,应该理解到,所揭露的系统、装置和方法,可以通过其它的方式实现。例如,以上所描述的装置实施例仅仅是示意性的,例如,所述单元的划分,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式,例如多个单元或组件可以结合或者可以集成到另一个系统,或一些特征可以忽略,或不执行。另一点,所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口,装置或单元的间接耦合或通信连接,可以是电性,机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的,作为单元显示的部件可以是或者也可以不是物理单元,即可以位于一个地方,或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外,在本申请各个实施例中的各功能单元可以集成在一个处理单元中,也可以是 各个单元单独物理存在,也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时,可以存储在一个计算机可读取存储介质中。基于这样的理解,本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储介质中,包括若干指令用以使得一台计算机设备(可以是个人计算机,服务器,或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括:U盘、移动硬盘、只读存储器(Read-Only Memory,)ROM、随机存取存储器(Random Access Memory,RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述,仅为本申请的具体实施方式,但本申请的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本申请揭露的技术范围内,可轻易想到变化或替换,都应涵盖在本申请的保护范围之内。因此,本申请的保护范围应所述以权利要求的保护范围为准。

Claims (27)

  1. 一种链路恢复方法,所述方法包括:
    第一小区执行链路恢复过程,其中,所述链路恢复过程用于恢复第二小区的目标链路。
  2. 根据权利要求1所述的方法,其中,所述第一小区执行链路恢复过程,包括:
    所述第一小区确定所述第二小区对应的第一信号,所述第一小区基于竞争的随机接入过程向第一节点通知所述第二小区对应的第一信号,所述第一信号用于所述第一节点恢复所述第二小区的目标链路。
  3. 根据权利要求2所述的方法,其中,所述第一小区基于竞争的随机接入过程向第一节点通知所述第二小区对应的第一信号,包括:
    所述第一小区在第一物理随机接入信道PRACH资源上向所述第一节点发送与所述第一信号关联的MSG1,所述第一信号用于所述第一节点发送与所述第一信号关联的MSG2;
    其中,所述第一PRACH资源用于竞争的随机接入过程。
  4. 根据权利要求1所述的方法,其中,所述第一小区执行链路恢复过程,包括:
    所述第一小区确定所述第二小区对应的第一信号,所述第一小区基于非竞争的随机接入过程向第一节点通知所述第二小区对应的第一信号,所述第一信号用于所述第一节点恢复所述第二小区的目标链路。
  5. 根据权利要求4所述的方法,其中,所述第一小区基于非竞争的随机接入过程向第一节点通知所述第二小区对应的第一信号,包括:
    所述第一小区在第二PRACH资源上向所述第一节点发送与所述第一信号关联的MSG1,所述第一信号用于所述第一节点发送与所述第一信号关联的MSG2;
    其中,所述第二PRACH资源用于非竞争的随机接入过程。
  6. 根据权利要求1所述的方法,其中,所述第一小区执行链路恢复过程,包括:
    所述第一小区确定所述第二小区对应的第一信号,所述第一小区通过媒体接入控制控制单元MAC CE向第一节点通知所述第二小区对应的第一信号,所述第一信号用于所述第一节点恢复所述第二小区的目标链路。
  7. 根据权利要求1所述的方法,其中,所述第一小区执行链路恢复过程,包括:
    所述第一小区确定所述第二小区对应的第一信号,所述第一小区通过上行控制信 令向第一节点通知所述第二小区对应的第一信号,所述第一信号用于所述第一节点恢复所述第二小区的目标链路。
  8. 根据权利要求2至7任一项所述的方法,其中,所述第一小区向所述第一节点通知所述第二小区对应的第一信号时,还向所述第一节点通知所述第一信号的作用是用于恢复所述第二小区的目标链路的。
  9. 根据权利要求2至8任一项所述的方法,其中,所述第一小区确定所述第二小区对应的第一信号,包括:
    所述第一小区将所述第一小区对应的第一信号作为所述第二小区对应的第一信号;或者,
    所述第一小区基于对同步信号块SSB和/或参考信号的测量结果,确定所述第二小区对应的第一信号;
    其中,所述第一小区和所述第二小区属于同一个频段。
  10. 根据权利要求2至8任一项所述的方法,其中,所述第一小区确定所述第二小区对应的第一信号,包括:
    所述第一小区接收第二小区发送的第一指示信息,所述第一指示信息用于指示所述第二小区基于对SSB和/或参考信号的测量结果所确定所述第二小区对应的第一信号。
  11. 根据权利要求1至10任一项所述的方法,其中,满足如下条件至少之一的情况下,所述第一小区执行链路恢复过程:
    所述第二小区配置有第二PRACH资源,所述第二PRACH资源关联的SSB和/或参考信号未满足第一门限值;
    所述第二小区未配置有第二PRACH资源,所述第二小区发生了链路失败;
    所述第二小区配置有第二PRACH资源,所述第二小区上用于链路恢复的随机接入失败次数超过第二门限值;
    所述第二小区配置有第二PRACH资源,所述第二小区上用于链路恢复的第一定时器超时;
    所述第二小区配置有第二PRACH资源,所述第二小区上用于链路恢复的随机接入过程失败;
    其中,所述第二PRACH资源用于非竞争的随机接入过程。
  12. 一种链路恢复装置,应用于第一小区,所述装置包括:
    链路恢复单元,用于执行链路恢复过程,其中,所述链路恢复过程用于恢复第二小区的目标链路。
  13. 根据权利要求12所述的装置,其中,所述链路恢复单元包括:
    确定子单元,用于确定所述第二小区对应的第一信号;
    通知子单元,用于基于竞争的随机接入过程向第一节点通知所述第二小区对应的第一信号,所述第一信号用于所述第一节点恢复所述第二小区的目标链路。
  14. 根据权利要求13所述的装置,其中,所述通知子单元,用于在第一PRACH资源上向所述第一节点发送与所述第一信号关联的MSG1,所述第一信号用于所述第一节点发送与所述第一信号关联的MSG2;
    其中,所述第一PRACH资源用于竞争的随机接入过程。
  15. 根据权利要求12所述的装置,其中,所述链路恢复单元包括:
    确定子单元,用于确定所述第二小区对应的第一信号;
    通知子单元,用于基于非竞争的随机接入过程向第一节点通知所述第二小区对应的第一信号,所述第一信号用于所述第一节点恢复所述第二小区的目标链路。
  16. 根据权利要求15所述的装置,其中,所述通知子单元,用于在第二PRACH资源上向所述第一节点发送与所述第一信号关联的MSG1,所述第一信号用于所述第一节点发送与所述第一信号关联的MSG2;
    其中,所述第二PRACH资源用于非竞争的随机接入过程。
  17. 根据权利要求12所述的装置,其中,所述链路恢复单元包括:
    确定子单元,用于确定所述第二小区对应的第一信号;
    通知子单元,用于通过MAC CE向第一节点通知所述第二小区对应的第一信号,所述第一信号用于所述第一节点恢复所述第二小区的目标链路。
  18. 根据权利要求12所述的装置,其中,所述链路恢复单元包括:
    确定子单元,用于确定所述第二小区对应的第一信号;
    通知子单元,用于通过上行控制信令向第一节点通知所述第二小区对应的第一信号,所述第一信号用于所述第一节点恢复所述第二小区的目标链路。
  19. 根据权利要求13至18任一项所述的装置,其中,所述通知子单元,用于向所述第一节点通知所述第二小区对应的第一信号时,还向所述第一节点通知所述第一信号的作用是用于恢复所述第二小区的目标链路的。
  20. 根据权利要求13至19任一项所述的装置,其中,所述确定子单元,用于将 所述第一小区对应的第一信号作为所述第二小区对应的第一信号;或者,基于对SSB和/或参考信号的测量结果,确定所述第二小区对应的第一信号;
    其中,所述第一小区和所述第二小区属于同一个频段。
  21. 根据权利要求13至19任一项所述的装置,其中,所述确定子单元,用于接收第二小区发送的第一指示信息,所述第一指示信息用于指示所述第二小区基于对SSB和/或参考信号的测量结果所确定所述第二小区对应的第一信号。
  22. 根据权利要求12至21任一项所述的装置,其中,满足如下条件至少之一的情况下,所述链路恢复单元执行链路恢复过程:
    所述第二小区配置有第二PRACH资源,所述第二PRACH资源关联的SSB和/或参考信号未满足第一门限值;
    所述第二小区未配置有第二PRACH资源,所述第二小区发生了链路失败;
    所述第二小区配置有第二PRACH资源,所述第二小区上用于链路恢复的随机接入失败次数超过第二门限值;
    所述第二小区配置有第二PRACH资源,所述第二小区上用于链路恢复的第一定时器超时;
    所述第二小区配置有第二PRACH资源,所述第二小区上用于链路恢复的随机接入过程失败;
    其中,所述第二PRACH资源用于非竞争的随机接入过程。
  23. 一种通信设备,包括:处理器和存储器,该存储器用于存储计算机程序,所述处理器用于调用并运行所述存储器中存储的计算机程序,执行如权利要求1至11中任一项所述的方法。
  24. 一种芯片,包括:处理器,用于从存储器中调用并运行计算机程序,使得安装有所述芯片的设备执行如权利要求1至11中任一项所述的方法。
  25. 一种计算机可读存储介质,用于存储计算机程序,所述计算机程序使得计算机执行如权利要求1至11中任一项所述的方法。
  26. 一种计算机程序产品,包括计算机程序指令,该计算机程序指令使得计算机执行如权利要求1至11中任一项所述的方法。
  27. 一种计算机程序,所述计算机程序使得计算机执行如权利要求1至11中任一项所述的方法。
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