WO2023184431A1 - Procédé de récupération après défaillance de faisceau, dispositif terminal et dispositif de réseau - Google Patents

Procédé de récupération après défaillance de faisceau, dispositif terminal et dispositif de réseau Download PDF

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Publication number
WO2023184431A1
WO2023184431A1 PCT/CN2022/084649 CN2022084649W WO2023184431A1 WO 2023184431 A1 WO2023184431 A1 WO 2023184431A1 CN 2022084649 W CN2022084649 W CN 2022084649W WO 2023184431 A1 WO2023184431 A1 WO 2023184431A1
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Prior art keywords
signal
bfd
channel
trp
terminal device
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PCT/CN2022/084649
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English (en)
Chinese (zh)
Inventor
曹建飞
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Oppo广东移动通信有限公司
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Priority to CN202280074533.7A priority Critical patent/CN118216113A/zh
Priority to PCT/CN2022/084649 priority patent/WO2023184431A1/fr
Publication of WO2023184431A1 publication Critical patent/WO2023184431A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path

Definitions

  • the present application relates to the field of communications, and more specifically, to a beam failure recovery method, terminal equipment and network equipment.
  • Beam Failure Recovery can also be called beam recovery.
  • the BFR mechanism has been limited to varying degrees in different versions of New Radio (NR, New Radio). It can only be implemented based on cells or transmission reception points (TRP). , Transmission Reception Point) is the basic unit of beam failure recovery. This beam failure recovery mechanism is not flexible enough.
  • Embodiments of the present application provide a beam failure recovery method, terminal equipment and network equipment, which can realize flexible beam failure recovery.
  • the embodiment of this application provides a beam failure recovery method, which includes:
  • the terminal equipment determines at least one of a first reference signal for a first type of channel/signal and a second reference signal for a second type of channel/signal;
  • the terminal equipment uses the first reference signal of the first type channel/signal to perform beam failure recovery on the first type channel/signal; and/or the terminal equipment uses the second reference signal of the second type channel/signal to perform beam failure recovery on the second type channel/signal.
  • the signal undergoes beam failure recovery.
  • the embodiment of this application provides a beam failure recovery method, which includes:
  • the network device configures at least one of the first reference signal of the first type of channel/signal and the second reference signal of the second type of channel/signal for the terminal equipment, and the first reference signal of the first type of channel/signal and the second type of channel/signal.
  • the second reference signal of the channel/signal is used to perform beam failure recovery on the first type channel/signal and the second type channel/signal respectively.
  • An embodiment of the present application provides a terminal device, including:
  • a determining module configured to determine at least one of a first reference signal for a first type of channel/signal and a second reference signal for a second type of channel/signal;
  • the beam failure recovery module is used to perform beam failure recovery on the first type channel/signal using the first reference signal of the first type channel/signal; and/or, the terminal equipment uses the second reference signal pair of the second type channel/signal.
  • the second type of channel/signal performs beam failure recovery.
  • This embodiment of the present application provides a network device, including:
  • a configuration module configured to configure at least one of the first reference signal of the first type of channel/signal and the second reference signal of the second type of channel/signal for the terminal equipment, the first reference signal of the first type of channel/signal and The second reference signal of the second type channel/signal is used to perform beam failure recovery on the first type channel/signal and the second type channel/signal respectively.
  • An embodiment of the present application provides a communication device, including 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, so that the communication device performs the above-mentioned beam failure recovery method.
  • An embodiment of the present application provides a chip for implementing the above communication method.
  • the chip includes: a processor, configured to call and run a computer program from a memory, so that the device installed with the chip executes the above-mentioned beam failure recovery method.
  • Embodiments of the present application provide a computer-readable storage medium for storing a computer program.
  • the computer program When the computer program is run by a device, it causes the device to perform the above communication method.
  • An embodiment of the present application provides a computer program product, including computer program instructions, which cause the computer to execute the above-mentioned beam failure recovery method.
  • An embodiment of the present application provides a computer program that, when run on a computer, causes the computer to perform the above beam failure recovery method.
  • the embodiment of the present application can provide a flexible beam failure recovery method.
  • Figure 1 is a schematic diagram of an application scenario according to an embodiment of the present application.
  • Figure 2 is a flow chart of the implementation of the beam failure recovery mechanism.
  • Figure 3 is a schematic diagram of inter-cell beam measurement and reporting.
  • Figure 4 is a schematic diagram of the division of different channels by inter-cell beam management.
  • Figure 5 is a schematic flow chart of a beam failure recovery method 500 according to an embodiment of the present application.
  • Figure 6 is a BFD schematic diagram of non-UE-specific channels/signals and UE-specific channels/signals according to an embodiment of the present application.
  • Figure 7 is a schematic diagram of the format of MAC CE used to activate BFD RS according to an embodiment of the present application.
  • Figure 8 is a schematic diagram of the corresponding relationship between BFD RS set and NBI RS set according to an embodiment of the present application.
  • Figure 9 is a schematic diagram of the format of MAC CE used to update NBI RS according to an embodiment of the present application.
  • Figure 10 is a schematic diagram of the format of MAC CE used to update BFD RS and NBI RS according to an embodiment of the present application.
  • Figure 11 is a schematic diagram of PRACH and PUCCH-SR used to obtain uplink resources according to an embodiment of the present application.
  • Figure 12 is a schematic flow chart of a beam failure recovery method 1200 according to an embodiment of the present application.
  • Figure 13 is a schematic block diagram of a terminal device 1300 according to an embodiment of the present application.
  • Figure 14 is a schematic block diagram of a network device 1400 according to an embodiment of the present application.
  • Figure 15 is a schematic structural diagram of a communication device 1500 according to an embodiment of the present application.
  • Figure 16 is a schematic structural diagram of a chip 1600 according to an embodiment of the present application.
  • Figure 17 is a schematic block diagram of a communication system 1700 according to an embodiment of the present application.
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • WCDMA broadband code division multiple access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • LTE-A Advanced long term evolution
  • NR New Radio
  • NTN Non-Terrestrial Networks
  • UMTS Universal Mobile Telecommunication System
  • WLAN Wireless Local Area Networks
  • WiFi wireless fidelity
  • 5G fifth-generation communication
  • the communication system in the embodiment of the present application can be applied to a carrier aggregation (Carrier Aggregation, CA) scenario, a dual connectivity (Dual Connectivity, DC) scenario, or an independent ( Standalone, SA) network deployment scenario.
  • Carrier Aggregation, CA Carrier Aggregation, CA
  • DC Dual Connectivity
  • SA Standalone
  • the communication system in the embodiment of the present application can be applied to unlicensed spectrum, where the unlicensed spectrum can also be considered as shared spectrum; or, the communication system in the embodiment of the present application can also be applied to Licensed spectrum, where licensed spectrum can also be considered as unshared spectrum.
  • the embodiments of this application describe various embodiments in combination with network equipment and terminal equipment.
  • the terminal equipment may also be called user equipment (User Equipment, UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication equipment, user agent or user device, etc.
  • User Equipment User Equipment
  • the terminal device can be a station (ST) in the WLAN, a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, or a personal digital processing unit.
  • ST station
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • the terminal device can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle-mounted; it can also be deployed on water (such as ships, etc.); it can also be deployed in the air (such as aircraft, balloons and satellites). superior).
  • the terminal device may be a mobile phone (Mobile Phone), a tablet computer (Pad), a computer with a wireless transceiver function, a virtual reality (Virtual Reality, VR) terminal device, or an augmented reality (Augmented Reality, AR) terminal.
  • Equipment wireless terminal equipment in industrial control, wireless terminal equipment in self-driving, wireless terminal equipment in remote medical, wireless terminal equipment in smart grid , wireless terminal equipment in transportation safety, wireless terminal equipment in smart city, or wireless terminal equipment in smart home, etc.
  • the terminal device may also be a wearable device.
  • Wearable devices can also be called wearable smart devices. It is a general term for applying wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes, etc.
  • a wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are not just hardware devices, but also achieve powerful functions through software support, data interaction, and cloud interaction.
  • wearable smart devices include full-featured, large-sized devices that can achieve complete or partial functions without relying on smartphones, such as smart watches or smart glasses, and those that only focus on a certain type of application function and need to cooperate with other devices such as smartphones.
  • the network device may be a device used to communicate with mobile devices.
  • the network device may be an access point (Access Point, AP) in WLAN, or a base station (Base Transceiver Station, BTS) in GSM or CDMA.
  • BTS Base Transceiver Station
  • it can be a base station (NodeB, NB) in WCDMA, or an evolutionary base station (Evolutional Node B, eNB or eNodeB) in LTE, or a relay station or access point, or a vehicle-mounted device, a wearable device, and an NR network network equipment (gNB) or network equipment in the future evolved PLMN network or network equipment in the NTN network, etc.
  • AP Access Point
  • BTS Base Transceiver Station
  • NodeB, NB base station
  • Evolutional Node B, eNB or eNodeB evolution base station
  • gNB NR network network equipment
  • the network device may have mobile characteristics, for example, the network device may be a mobile device.
  • the network device can be a satellite or balloon station.
  • the satellite can be a low earth orbit (LEO) satellite, a medium earth orbit (MEO) satellite, a geosynchronous orbit (geostationary earth orbit, GEO) satellite, a high elliptical orbit (High Elliptical Orbit, HEO) satellite ) satellite, etc.
  • the network device may also be a base station installed on land, water, etc.
  • network equipment can provide services for a cell, and terminal equipment communicates with the network equipment through transmission resources (for example, frequency domain resources, or spectrum resources) used by the cell.
  • the cell can be a network equipment ( For example, the cell corresponding to the base station), the cell can belong to the macro base station, or it can belong to the base station corresponding to the small cell (Small cell).
  • the small cell here can include: urban cell (Metro cell), micro cell (Micro cell), pico cell ( Pico cell), femto cell (Femto cell), etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-rate data transmission services.
  • Figure 1 illustrates a communication system 100.
  • the communication system includes a network device 110 and two terminal devices 120.
  • the communication system 100 may include multiple network devices 110 , and the coverage of each network device 110 may include other numbers of terminal devices 120 , which is not limited in this embodiment of the present application.
  • the communication system 100 may also include other network entities such as a Mobility Management Entity (MME), an Access and Mobility Management Function (AMF), etc.
  • MME Mobility Management Entity
  • AMF Access and Mobility Management Function
  • network equipment may include access network equipment and core network equipment. That is, the wireless communication system also includes multiple core networks used to communicate with access network equipment.
  • the access network equipment can be a long-term evolution (long-term evolution, LTE) system, a next-generation (mobile communication system) (next radio, NR) system or authorized auxiliary access long-term evolution (LAA- Evolutionary base station (evolutional node B, abbreviated as eNB or e-NodeB) macro base station, micro base station (also known as "small base station"), pico base station, access point (access point, AP), Transmission point (TP) or new generation base station (new generation Node B, gNodeB), etc.
  • LTE long-term evolution
  • NR next-generation
  • LAA- Evolutionary base station evolutional node B, abbreviated as eNB or e-NodeB
  • eNB next-generation
  • NR next-generation
  • LAA- Evolutionary base station evolutional node B, abbre
  • the communication equipment may include network equipment and terminal equipment with communication functions.
  • the network equipment and terminal equipment may be specific equipment in the embodiments of the present application, which will not be described again here; the communication equipment also It may include other devices in the communication system, such as network controllers, mobility management entities and other network entities, which are not limited in the embodiments of this application.
  • the "instruction” mentioned in the embodiments of this application may be a direct instruction, an indirect instruction, or an association relationship.
  • a indicates B which can mean that A directly indicates B, for example, B can be obtained through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also mean that there is an association between A and B. relation.
  • correlate can mean that there is a direct correspondence or indirect correspondence between the two, it can also mean that there is an associated relationship between the two, or it can mean indicating and being instructed, configuration and being. Configuration and other relationships.
  • the first version of NR that is, Rel.15, supports the beam failure recovery mechanism of the primary cell (such as (PCell, Primary Cell) or primary and secondary cells (PSCell, Primary Secondary Cell)); in Rel.16 It supports the beam recovery mechanism of the secondary cell (SCell, Secondary Cell). In Rel.17, SpCell or SCell TRP-specific beam failure recovery mechanism is supported.
  • FIG. 2 is a flow chart of the implementation of the beam failure recovery mechanism.
  • the general steps of the beam failure recovery mechanism can be divided into the following steps.
  • the first step is the detection of beam failure and the discovery of new beams (NBI, New Beam Identification);
  • the second step is the reporting of beam failure (BFRQ, Beam Failure Recovery Request);
  • the third step is the beam failure recovery response (BFRR, Beam Failure Recovery Response);
  • the fourth step is the recovery of the UE's beam and other corresponding parameters.
  • Unified Transmission Configuration Indication state (Unified TCI state, Unified Transmission Configuration Indication state)
  • TCI Transmission Configuration Indication
  • UCI state Unified TCI state
  • QCL quasi-co-location
  • the UE can learn from the received channel state information-reference signal (CSI-RS, Channel State Information-Reference Signal) how to receive the reference signal that has not yet been transmitted, such as the physical downlink control channel (PDCCH, Physical Downlink Control Channel) QCL relationship between demodulation reference signal (DMRS, Demodulatin Reference Signal) or physical downlink shared channel (PDSCH, Physical Downlink Shared Channel) DMRS.
  • CSI-RS Channel State Information-Reference Signal
  • the first level of meaning is that it unifies the uplink and downlink beam indication mechanisms.
  • the second level of meaning is the unification of beams between different channels.
  • the UE believes that the downlink PDCCH (UE exclusive) and PDSCH (UE exclusive) are unified into the same beam for transmission;
  • the UE uses the same beam to transmit the physical uplink control channel (PUCCH, Physical Uplink Control Channel) and the physical uplink shared channel (PUSCH, Physical Uplink Shared Channel).
  • PUCCH Physical Uplink Control Channel
  • PUSCH Physical Uplink Shared Channel
  • the QCL source reference signal contained in unified TCI state can come from other cells outside the serving cell. And it can have a different physical cell identity (PCI, Physical Cell Identity) from this cell, which is the concept of inter-cell beam management (inter-cell beam management) discussed by 3GPP in the standardization process.
  • PCI Physical Cell Identity
  • the inter-cell beam management function means that the UE can measure the synchronization signal block (SSB, Synchronization Signal and PBCH Block) of neighboring cells.
  • the PCI associated with the SSB is different from the PCI of the UE's current serving cell.
  • the UE notifies the network (NW, NetworkWork) of the SSB index (index) of the neighboring cell with better beam quality through beam reporting.
  • the beam quality evaluation here can be carried out through Layer 1-Reference Signal Receive Power (L1-RSRP, Layer 1-Reference Signal Receive Power).
  • FIG. 3 is a schematic diagram of inter-cell beam measurement and reporting. As shown in Figure 3, the UE can measure and report SSB information from a cell or TRP to the NW. The cell or TRP has a different PCI from the serving cell.
  • NW instructs the UE to use the TRP of the neighboring cell in the current serving cell for uplink and downlink beam-based transmission based on the UE's measurement and reporting of neighboring cell beams.
  • the UE's beam is established with the TRP of the neighboring cell, the UE does not perform cell switching.
  • FIG. 4 is a schematic diagram of the division of different channels by inter-cell beam management. As shown in Figure 4, 3GPP defines four types of CORESET.
  • ⁇ CORESET A It is only associated with the UE-dedicated Search Space (USS, UE-dedicated Search Space) and the common search space (CSS, Common Search Space) type 3 (Type3) search space.
  • ⁇ CORESET B It is only associated with other public search spaces except Typ3
  • ⁇ CORESET C It can be associated with the search space of USS and other public search spaces except Type3.
  • ⁇ CORESET#0 It is similar to CORESET C in the protocol and can be associated with the USS search space or other public search spaces except Typ3.
  • the Type3 CSS is taken out from the public search space here because it is configured after the UE enters the RRC connection state and requires a public RNTI for descrambling. After the UE accesses, the NW often Type3 CSS is used as USS.
  • CORESET#0, CORESET B and CORESET C can only come from the serving cell.
  • CORESETs and the channels scheduled by these CORESETs can be called It is a channel or signal that is not exclusive to UE. Only CORESET A and its scheduled signals or channels are considered UE-specific channels or signals, and it can use beams from another cell or TRP (different from the PCI of the serving cell).
  • the UE can receive CSI-RS, PDCCH and PDSCH from another cell or TRP (with a different PCI from the original serving cell) or send sounding reference signal (SRS, Sounding Reference Signal), PUCCH and PUSCH.
  • SRS Sounding Reference Signal
  • the UE has to maintain beam links with at least 2 cells or 2 TRPs. Once any beam link fails, the original BFR mechanism cannot meet the inter-cell beam failure recovery function.
  • part of the UE's channels and reference signals need to be retained in the original serving cell for transmission, while other parts of the channels can be migrated to neighboring cells for transmission.
  • different beam failure recovery processes are required to ensure that beam-based links are in normal working condition.
  • a channel-dependent beam failure recovery process is designed in this case. The UE can select appropriate beams for the separated channels to recover.
  • the beam recovery mechanisms described above are all performed within the UE's serving cell.
  • the NW is likely to perform inter-cell beam operations on it, causing different channels of the UE to work in different cells or TRPs.
  • the BFR mechanism in this scenario is still not defined. The UE will not perform a channel-based beam recovery mechanism, but will only perform BFR with the cell or TRP as the basic unit.
  • FIG 5 is a schematic flow chart of a beam failure recovery method 500 according to an embodiment of the present application. This method can optionally be applied to the system shown in Figure 1, but is not limited thereto. The method includes at least part of the following.
  • the terminal device determines at least one of the first reference signal of the first type of channel/signal and the second reference signal of the second type of channel/signal;
  • the terminal equipment uses the first reference signal of the first type channel/signal to perform beam failure recovery on the first type channel/signal; and/or, the terminal equipment uses the second reference signal of the second type channel/signal to perform beam failure recovery on the first type channel/signal.
  • Class 2 channels/signals perform beam failure recovery.
  • the first type of channel/signal may be a non-UE exclusive channel/signal of the terminal device or a UE exclusive channel/signal
  • the second type of channel/signal may be a UE exclusive channel/signal of the terminal equipment or a non-UE specific channel/signal.
  • Dedicated channel/signal may be a non-UE exclusive channel/signal of the terminal device or a UE exclusive channel/signal
  • Dedicated channel/signal may be a non-UE exclusive channel/signal of the terminal device or a UE exclusive channel/signal
  • Dedicated channel/signal may be a UE exclusive channel/signal of the terminal equipment.
  • the first type of channel/signal may be a combination of non-UE-specific channels, that is, the PDCCH associated with the common search space and its scheduled PDSCH. It can also be other channel combinations determined by the NW or the UE, such as PDCCH and its scheduled PUSCH, CSI-RS and PDSCH, PUCCH and PUSCH, PRACH and PUSCH, etc., or multiple different combinations or a single channel.
  • the second type of channel can also be extended to a variety of different combinations, such as channel combinations associated with a UE-specific search space, or even a single channel.
  • the first reference signal may include at least one of a BFD reference signal (RS, Reference Signal) and an NBI RS;
  • the second reference signal may include at least one of a BFD RS and an NBI RS.
  • the embodiment of the present application uses the corresponding first reference signal/second reference signal for the first type channel/signal and the second type channel/signal respectively to perform beam failure recovery, and can achieve beam failure recovery in units of channels. Provides a more flexible beam failure recovery mechanism.
  • the first type of channels/signals (such as non-UE-specific channels) resides in the original serving cell
  • the second type of channels/signals (such as non-UE-specific channels) may reside in the original serving cell with a different PCI. cell or TRP.
  • the beam failure recovery process (i.e., channel-based beam failure recovery process) proposed by the embodiment of this application can at least include the following steps: first, the explicit or implicit configuration process of BFD RS, and the corresponding configuration of NBI RS process. Afterwards, when the UE detects beam failure, it sends a beam failure recovery request (BFRQ), such as a beam failure recovery request based on the RACH process or based on PUCCH-Scheduling Request (SR, Scheduling Request). After receiving the BFRQ from the UE, the NW responds to the UE's request and sends a beam failure recovery response (BFRR). Finally, the UE restores part of the channel/signal to the new beam (if the UE finds and reports a qualified beam).
  • BFRQ beam failure recovery request
  • SR PUCCH-Scheduling Request
  • BFRR beam failure recovery response
  • BFD RS can be configured for the UE's serving cell and multiple neighboring cells with different PCIs.
  • the NW can configure BFD RS for multiple neighboring cells with different PCIs of the UE through RRC signaling, and each PCI can correspond to 1, 2, or multiple BFD RS groups (sets).
  • Figure 6 is a BFD schematic diagram of non-UE-specific channels/signals and UE-specific channels/signals according to an embodiment of the present application. As shown in Figure 6, the first type of channels/signals of the UE (such as non-UE-specific channels) are maintained at In the serving cell of PCI#1, configure a BFD RS set for the serving cell of PCI#1.
  • the BFD RS set performs BFD detection on the first type of channels/signals (such as non-UE exclusive channels); the second type of UE Channels/signals (such as UE-specific channels) are activated in the PCI#2 cell. Configure a BFD RS set for the PCI#2 serving cell/TRP. The BFD RS set is suitable for the second type of channels/signals (such as UE-specific channels). channel) to perform BFD detection.
  • the serving cell or neighboring cells if the cell adopts the single TRP (single TRP) mechanism, you can configure a BFD RS set for the cell; if the cell adopts the multi-TRP (multi-TRP) mechanism, you can configure the BFD RS set for the cell.
  • the cell is configured with multiple (such as 2) BFD RS sets, where each TRP corresponds to one BFD RS set.
  • the UE When the neighboring cell is in an inactive state for a specific UE, the UE only stores the BFD RS configured by these RRCs and does not perform corresponding BFD measurements. Only when these neighboring cells are in an active state for the UE, the UE will measure the BFD RS corresponding to these neighboring cells.
  • the terminal device determines the second reference signal of the second type of channel/signal may include:
  • the terminal equipment determines the BFD RS of the first neighboring cell/TRP, and determines the BFD RS of the first neighboring cell/TRP as the BFD RS of the second type channel/signal.
  • the terminal device can determine the BFD RS of the first neighboring cell/TRP according to the BFD RS configured by the network device for each neighboring cell/TRP.
  • the terminal equipment Before the terminal equipment determines the second reference signal of the second type channel/signal, it may further include: the terminal equipment receives RRC signaling, which includes the BFD RS configured by the network equipment for each neighboring cell/TRP.
  • the BFD RS may be an SSB resource or a CSI-RS resource.
  • the UE can determine the PCI of the cell through the PSS and SSS sequences carried by the SSB resource.
  • SSB resources cannot be used directly as BFD RSs; the embodiment of this application relaxes the detection requirements for SSBs and supports the UE to use SSBs as BFD RSs.
  • the NW can configure the CSI-RS to perform quasi-co-location operation with the SSB associated with the cell, so that the UE can perform quality measurement of the beam through the CSI-RS.
  • the embodiment of this application can adopt at least the following two methods:
  • the first is to use MAC CE to activate BFD RS.
  • Network equipment can use MAC CE to respectively activate BFD RS for first-type channels/signals (such as non-UE-specific channels) and second-type channels/signals (such as UE-specific channels).
  • first-type channels/signals such as non-UE-specific channels
  • second-type channels/signals such as UE-specific channels
  • the terminal device uses the second reference signal of the second type channel/signal to perform beam failure recovery on the second type channel/signal.
  • the terminal device When the first neighboring cell/TRP is in the activated state, the terminal device receives the first MAC CE, which is used to activate one or more BFD RSs in the BFD RS of the first neighboring cell/TRP;
  • the terminal equipment uses the activated BFD RS to perform beam failure detection in beam failure recovery.
  • the first media access control (MAC, Media Access Control) control element (CE, Control Element) may include at least one of the following:
  • the first PCI corresponding to the cell/TRP
  • the NW first configures a BFD RS set for each cell or TRP through RRC signaling. For example, a maximum of 64 BFD RSs in each BFD RS set can be configured.
  • MAC CE is used to activate the BFD RS.
  • Figure 7 is a schematic diagram of the format of the MAC CE used to activate BFD RS according to an embodiment of the present application. As shown in Figure 7, the MAC CE may include the following fields:
  • PCI Indicates the cell or TRP corresponding to BFD RS activation. Since the value range of PCI is from 0 to 1003, the PCI field length can be 10 bits.
  • ⁇ BFD RS ID Indicates the activated BFD RS ID. If the entire BFD RS set has a maximum of 64 BFD RSs, the length of the BFD RS ID field can be 6 bits.
  • ⁇ CSI-RS resource index (resource index): Using this field, the NW can use the number of the CSI-RS resource to directly activate the BFD RS. In this way, the CSI-RS resource index (value) with a length of 7 bits can be used. Range is 0 ⁇ 127) instead of BFD RS ID.
  • ⁇ SSB resource index (resource index): Using this field, the NW can use the SSB resource number to directly activate the BFD RS. In this method, a 6-bit CSI-RS resource index (value range is 0 ⁇ 63) to replace BFD RS ID.
  • ⁇ R indicates reserved bits.
  • the MAC CE includes the BFD RS ID or SSB resource index, there are 2 reserved bits (R bits) in the MAC CE; if the MAC CE includes the CSI-RS resource index, due to the CSI-RS The length of the resource index is 7 bits, so there are no reserved bits (R bits) in the MAC CE.
  • the above MAC CE can also be used to activate a certain number of BFD RS to meet the UE's measurement capabilities.
  • the NW does not use separate signaling to activate BFD RS.
  • the UE when the NW activates the unified TCI state of a certain cell or TRP through MAC CE or DCI signaling, the UE believes that the uplink or downlink beam link corresponding to the unified TCI state is in an activated state, that is, the neighboring cell In the activated state, the UE can automatically activate the BFD RS of the cell or TRP without requiring additional explicit signaling to support it.
  • the terminal equipment uses the second reference signal of the second type channel/signal to perform beam failure recovery on the second type channel/signal, which may include:
  • the terminal equipment uses the BFD RS of the second type channel/signal to perform beam failure detection in beam failure recovery.
  • the MAC CE used to activate the BFD RS in the first method can be used to update the BFD RS.
  • the terminal device after the terminal device completes beam failure recovery, it may further include:
  • the terminal equipment receives the second MAC CE, which is used to update the BFD RS corresponding to the cell/TRP corresponding to the first type channel/signal, and/or, the second MAC CE is used to update the second type channel/signal The BFD RS corresponding to the corresponding cell/TRP.
  • the second MAC CE includes at least one of the following:
  • the CSI-RS number of the updated BFD RS is the CSI-RS number of the updated BFD RS
  • the SSB number of the updated BFD RS is the SSB number of the updated BFD RS.
  • the second MAC CE may include:
  • PCI Indicates the cell or TRP corresponding to the BFD RS update.
  • PCI field length can be 10 bits.
  • ⁇ BFD RS ID Indicates the updated BFD RS ID.
  • the length of the BFD RS ID field can be 6 bits.
  • ⁇ CSI-RS resource index (resource index): Using this field, the NW can use the number of the CSI-RS resource to directly update the BFD RS. In this way, a CSI-RS resource index (value) with a length of 7 bits can be used. Range is 0 ⁇ 127) instead of BFD RS ID.
  • NW can directly update the BFD RS using the resource number of the SSB.
  • the length of the SSB resource index can be 6 bits.
  • ⁇ R indicates reserved bits.
  • the MAC CE includes the BFD RS ID or SSB resource index, there are 2 reserved bits (R bits) in the MAC CE; if the MAC CE includes the CSI-RS resource index, due to the CSI-RS resource index The length is 7 bits, so there are no reserved bits (R bits) in MAC CE.
  • the NW does not explicitly configure or activate the BFD RS for the UE, but the UE itself determines the behavior of the BFD RS.
  • the terminal equipment determines the BFD RS of the first neighboring cell/TRP, which may include:
  • the terminal equipment determines the BFD RS of the first neighboring cell/TRP based on the activated unified TCI status of CORESET in the first neighboring cell/TRP.
  • the UE determines the BFD RS by activating the unified TCI state of CORESET(s) in a cell or TRP, that is, the QCL-TypeD RS contained in the QCL info contained in the unified TCI state can be used as a BFD RS. use.
  • the UE also needs to determine when to detect the BFD RS of the UE-specific channel/signal.
  • the above-mentioned terminal equipment uses the second reference signal of the second type channel/signal to perform beam failure recovery on the second type channel/signal, which may include:
  • the terminal equipment uses the BFD RS of the second type channel/signal to perform beam failure detection in the beam failure recovery.
  • the UE starts to measure the BFD RS. Because the CORESET of the UE exclusive channel has entered normal operation at this time, it needs to be monitored by the beam. For non-UE-dedicated channels, they have been used in the serving cell since the UE made initial access. Therefore, the start time of BFD RS detection for the UE-dedicated channel can also be the initial access time.
  • the NW configures different BFD RSs for different channels/signals of the UE explicitly or implicitly, it can configure the corresponding explicit NBI RS for the UE, so that when the UE discovers the first type of channel/signal or After the second type channel/signal beam fails, a suitable new beam can be found from the beam candidate set represented by NBI RS and reported to the NW.
  • the NBI RS may be the CSI-RS and SSB of the serving cell or neighbor cell/TRP.
  • the above terminal device determines at least one of the first reference signal of the first type of channel/signal and the second reference signal of the second type of channel/signal, which may include:
  • the terminal equipment determines the NBI RS of the first type channel/signal based on the BFD RS of the first type channel/signal and the corresponding relationship between the BFD RS and the NBI RS; and/or,
  • the terminal device determines the NBI RS of the second type channel/signal based on the BFD RS of the second type channel/signal and the corresponding relationship between the BFD RS and the NBI RS.
  • the above method may further include: the terminal device receiving the corresponding relationship between the BFD RS and the NBI RS.
  • NBI RS set and BFD RS set can have a one-to-one correspondence, that is, if the UE detects beam failure in the BFD RS set corresponding to the first type channel/signal or the second type channel/signal, it can Select a suitable new beam from the corresponding NBI RS set to report to the network (if any).
  • “Appropriate” here may mean that the L1-RSRP of the beam is greater than the predetermined threshold set by the NW.
  • the one-to-one relationship between BFD RS set and NBI RS set can be configured in advance by the network device through RRC parameters for the terminal device. For example, when the network device configures the BFD RS set for the terminal device, add an NBI RS set ID to its RRC parameters.
  • each BFD RS set corresponds one-to-one with the NBI RS set indicated by the NBI RS set ID. That is, for the BFD RS set of non-UE exclusive channels/signals, each BFD RS set corresponds to one NBI RS set; for the BFD RS set of the UE exclusive channel, each BFD RS set corresponds to another NBI RS set. Since the BFD RS configuration process generally occurs before the NBI RS configuration process, when the network device configures the BFD RS for the terminal device, it also configures the corresponding relationship between the BFD RS and the NBI RS (such as the one-to-one correspondence between the BFD RS set and the NBI RS set).
  • FIG. 8 is a schematic diagram of the corresponding relationship between BFD RS set and NBI RS set according to an embodiment of the present application. As shown in Figure 8, the serving cell where the non-UE exclusive channel/signal is located, and each neighbor corresponding to the UE exclusive channel/signal In each community, a one-to-one correspondence between BFD RS set and NBI RS set is configured.
  • a BFD RS set can include multiple BFD RSs, such as a BFD RS set including 2 BFD RSs; an NBI RS set can also include multiple NBI RSs, such as an NBI RS set including 7 NBI RSs.
  • the embodiment of this application can start measuring the corresponding NBI RS set after the BFD RS enters the activation state, that is, two one-to-one corresponding BFD RS set and NBI RS set are activated simultaneously or go activate.
  • the terminal equipment uses the first reference signal of the first type channel/signal to perform beam failure recovery on the first type channel/signal, including: the BFD RS of the first type channel/signal is in the active state Afterwards, the terminal equipment performs new beam selection in beam failure recovery for the NBI RS of the first type channel/signal; and/or,
  • the terminal equipment uses the second reference signal of the second type channel/signal to perform beam failure recovery on the second type channel/signal, including: after the BFD RS of the second type channel/signal is activated, the terminal equipment performs beam failure recovery on the second type channel/signal. /NBI RS of the signal performs new beam selection in beam failure recovery.
  • the embodiment of this application proposes an update mechanism for NBI RS.
  • the terminal device may further include:
  • the terminal device receives the third MAC CE, which is used to update the NBI RS corresponding to the cell/TRP corresponding to the first type channel/signal, and/or, the third MAC CE is used to update the second type channel/signal NBI RS corresponding to the corresponding cell/TRP.
  • the third MAC CE includes at least one of the following:
  • FIG. 9 is a schematic diagram of the format of the MAC CE used to update the NBI RS according to an embodiment of the present application.
  • the MAC CE may include the following fields:
  • PCI Indicates the cell or TRP corresponding to NBI RS update. Because the PCI value range is from 0 to 1003, the PCI field length can be 10 bits.
  • ⁇ NBI RS ID Updated NBI RS ID. If the entire NBI RS set has a maximum of 64 NBI RSs, the length of the NBI RS ID field can be 6 bits.
  • ⁇ CSI-RS resource index Using this field, the NW can use the number of the CSI-RS resource to directly update the NBI RS. In this way, a CSI-RS resource index with a length of 7 bits can be used (the value range is 0 ⁇ 127) to replace NBI RS ID.
  • ⁇ SSB resource index Using this field, NW can choose to directly use the SSB resource index to update the NBI RS.
  • the length of the SSB resource index can be 6 bits.
  • ⁇ R indicates reserved bit
  • NBI RS ID/CSI-RS resource index/SSB resource index fields can be included to indicate multiple updated NBI RS.
  • the embodiment of this application can also use a unified MAC CE to update the BFD RS and NBI RS.
  • the terminal device after the terminal device completes beam failure recovery, it may further include:
  • the terminal equipment receives the fourth MAC CE.
  • the fourth MAC CE is used to update the BFD RS and NBI RS corresponding to the cell/TRP corresponding to the first type channel/signal, and/or the fourth MAC CE is used to update the second type channel/ BFD RS and NBI RS corresponding to the cell/TRP corresponding to the signal.
  • the fourth MAC CE may include at least one of the following:
  • the fourth PCI corresponding to the cell/TRP
  • FIG. 10 is a schematic diagram of the format of the MAC CE used to update the BFD RS and NBI RS according to an embodiment of the present application.
  • the MAC CE may include the following fields:
  • PCI Indicates the cell or TRP corresponding to BFD RS and NBI RS updates. Because the PCI value range is from 0 to 1003, the PCI field length can be 10 bits.
  • ⁇ BFD RS ID Indicates the updated BFD RS ID. If the entire BFD RS set has a maximum of 64 BFD RSs, the length of the BFD RS ID field can be 6 bits.
  • ⁇ CSI-RS resource index (resource index): Using this field, the NW can use the number of the CSI-RS resource to directly update the BFD RS. In this way, a CSI-RS resource index (value) with a length of 7 bits can be used. Range is 0 ⁇ 127) instead of BFD RS ID.
  • ⁇ SSB resource index Using this field, NW can directly update the BFD RS using the resource number of the SSB.
  • the length of the SSB resource index field may be 6 bits.
  • ⁇ NBI RS ID Updated NBI RS ID. If the entire NBI RS set has a maximum of 64 NBI RSs, the length of the NBI RS ID field can be 6 bits.
  • ⁇ CSI-RS resource index Using this field, the NW can use the number of the CSI-RS resource to directly update the NBI RS. In this way, a CSI-RS resource index with a length of 7 bits can be used (the value range is 0 ⁇ 127) to replace NBI RS ID.
  • ⁇ SSB resource index Using this field, NW can choose to directly use the SSB resource index to update the NBI RS.
  • the length of the SSB resource index field may be 6 bits.
  • ⁇ R indicates reserved bit
  • the NW does not configure an explicit NBI RS for the UE, so the UE can use the SSB associated with the cell/TRP where the UE-specific channel/signal or non-UE-specific channel/signal is located as the NBI RS.
  • the terminal device determines at least one of a first reference signal for a first type of channel/signal and a second reference signal for a second type of channel/signal, including:
  • the terminal equipment determines multiple first-category SSBs associated with the cell/TRP where the first-category channel/signal is located, and uses all or part of the multiple first-category SSBs as the NBI RS of the first-category channel/signal. ;and / or,
  • the terminal equipment determines multiple Type 2 SSBs associated with the cell/TRP where the Type 2 channel/signal is located, and uses all or part of the Type 2 SSBs among the multiple Type 2 SSBs as the NBI RS of the Type 2 channel/signal. .
  • the above correlation may mean that the PCI possessed by the cell/TRP is expressed through the sequences of PSS and SSS in the SSB.
  • the UE can find up to 64 SSBs corresponding to it through the PCI of the cell or TRP, and use all or a subset of these SSBs as a corresponding implicit NBI RS set.
  • the UE finds the appropriate SSB in the NBI RS set and reports it to the NW.
  • the difference from explicitly configuring NBI RS is that the SSB here can be found by the UE by measuring all SSBs to find a suitable new beam, rather than a new beam found within the range specified by the NW.
  • the terminal device Based on the aforementioned first to fourth steps, the terminal device detects that a beam failure has occurred and selects a new beam that can be used for channel transmission. If the terminal device selects a new beam that can be used for channel transmission, in this step, the terminal device can obtain uplink resources from the network device and use the uplink resources to report the new beam selected by the terminal.
  • the beam failure detection method proposed in the embodiment of this application may also include:
  • the terminal device obtains the uplink resources for sending the MAC CE (BFR MAC CE) that carries beam failure recovery.
  • the BFR MAC CE is used to carry the new beam selected by the terminal device.
  • the terminal device can use the uplink resources to send the BFR MAC CE, thereby enabling the terminal device to report the selected new beam.
  • the embodiments of the present application can strive to obtain uplink resources for sending BFR MAC CE based on a contention-based random access process (CBRA, Contention Based Random Access).
  • CBRA contention-based random access process
  • the terminal equipment obtaining the uplink resources for sending BFR MAC CE may include: when the beam failure occurs on the first type of channel/signal (such as a non-UE exclusive channel/signal), the terminal equipment transmits the signal to the first type of channel/signal (such as a non-UE exclusive channel/signal).
  • the cell/TRP where the dedicated channel/signal is located initiates a competition-based random access process to obtain uplink resources for sending BFR MAC CE.
  • the UE can send a CBRA signal to the serving cell/TRP to obtain uplink resources to send BFR MAC CE.
  • the random access process is considered because there are non-UE-specific channels/signals required for the UE random access process in the cell/TRP, such as PRACH, etc.
  • the embodiments of the present application can strive to obtain uplink resources for sending BFR MAC CE based on PUCCH-SR.
  • the terminal equipment obtaining the uplink resources for sending BFR MAC CE may include: when the second type of channel/signal (such as a UE-specific channel/signal) fails, the terminal equipment transmits the signal to the first type of channel/signal (such as a non-UE-specific channel/signal).
  • the cell/TRP where the channel/signal is located) or the cell/TRP where the second type channel/signal (such as UE-specific channel/signal) is located sends PUCCH-SR to obtain the uplink resources for sending BFR MAC CE.
  • the UE can send PUCCH-SR to the cell or the cell where the first type channel or signal is located to obtain uplink resources, and then send the BFR MAC CE to perform recover.
  • the NW can associate the BFD RS set with the PUCCH-SR in advance through configuration.
  • its associated PUCCH-SR such as the PUCCH-SR pointing to another non-failed cell or TRP
  • the NW can associate the BFD RS set with the PUCCH-SR in advance through configuration.
  • its associated PUCCH-SR such as the PUCCH-SR pointing to another non-failed cell or TRP
  • the NW can associate the BFD RS set with the PUCCH-SR in advance through configuration.
  • its associated PUCCH-SR such as the PUCCH-SR pointing to another non-failed cell or TRP
  • the terminal equipment obtains the uplink resources for sending BFR MAC CE, including: the terminal equipment determines the PUCCH-SR associated with the BFD RS of the channel/signal where the beam failure occurs, and sends the associated PUCCH-SR to obtain the uplink resource for sending BFR MAC CE. resource.
  • the terminal equipment can receive the association relationship between the BFD RS and the PUCCH-SR.
  • the association relationship between BFD RS and PUCCH-SR can be sent to the terminal device in advance by the network device.
  • the terminal device can The cell/TRP where the first type channel/signal is located sends PUCCH-SR to obtain the uplink resources for sending BFR MAC CE; if the network device does not configure PUCCH- SR, when the beam failure occurs on the first type channel/signal, the terminal device can initiate a competition-based random access process to the cell/TRP where the first type channel/signal is located to obtain the uplink resources for sending BFR MAC CE.
  • the terminal equipment determines the PUCCH-SR associated with the BFD RS of the channel/signal where the beam failure occurs, which may include: the terminal equipment determines the PUCCH-SR associated with the BFD RS of the channel/signal where the beam failure occurs based on the association relationship. .
  • Figure 11 is a schematic diagram of PRACH and PUCCH-SR used to obtain uplink resources according to an embodiment of the present application.
  • the beam direction of PRACH points to the serving cell where the non-UE exclusive channel/signal is located
  • the beam direction of PUCCH-SR can point to the serving cell where the non-UE exclusive channel/signal is located, or it can point to the serving cell where the UE exclusive channel/signal is located. of cell/TRP.
  • the terminal device when beam failure occurs in both the first type channel/signal and the first type channel/signal, the terminal device initiates a TRP-based communication to the cell/TRP where the first type channel/signal is located.
  • the random access process of competition is used to obtain the uplink resources of the sending BFR MAC CE.
  • the UE can initiate a random access to the cell where the non-UE-specific channels/signals are located (i.e., the serving cell). entry process, thereby carrying the BFR MAC CE in the subsequent PUSCH.
  • the NW can configure or activate a unified TCI state (which can be an uplink TCI state or a joint TCI state) for the PUCCH-SR, and the UE can configure the cell where the non-UE exclusive channel/signal is located (such as the serving cell). ) or the cell where the UE exclusive channel/signal is located (such as a neighboring cell) sends PUCCH-SR to obtain uplink resources for sending BFR MAC CE.
  • a unified TCI state which can be an uplink TCI state or a joint TCI state
  • the BFR MAC CE sent by the UE may include at least one of the following:
  • the second PCI corresponding to the cell/TRP
  • Indication information indicating whether a suitable new beam has been found
  • the second PCI corresponding to the above-mentioned cell/TRP may be used to indicate the PCI corresponding to the cell/TRP corresponding to the channel/signal where the beam failure occurs.
  • the above-mentioned candidate RS identifiers may be used to indicate the new beam selected by the terminal device.
  • FIG 11 is a schematic structural diagram of a BFR MAC CE according to an embodiment of the present application. As shown in Figure 11, the BFR MAC CE may specifically include the following fields:
  • the PCI can correspond to the cell where the UE exclusive channel/signal is located, or the cell where the non-UE exclusive channel/signal is located.
  • ⁇ AC Used to indicate whether a suitable new beam has been found for this PCI.
  • the length of AC can be 1 bit.
  • Candidate RS ID This field can indicate the identity of the new beam, such as RRC configuration or MAC CE update or activated CSI-RS resource index or SSB resource index.
  • ⁇ DL or joint TCI state ID Considering the characteristics of the unified TCI state, the UE can directly report a unified TCI state ID. If the unified TCI state ID is the downlink (DL) TCI state ID, then in the later beam recovery, the corresponding downlink PDCCH, PDSCH or CSI-RS can be restored to the new beam indicated by the TCI; if the unified TCI state ID is Joint TCI state ID, then in addition to the downlink PDCCH, PDSCH or CSI-RS, the uplink PUCCH, PUSCH and sounding reference signal (SRS, Sounding Reference Signal) can also be restored to the new beam indicated by the TCI.
  • SRS Sounding Reference Signal
  • NW confirms BFRQ, that is, sends BFRR
  • the UE After the UE sends the BFR MAC CE to the NW, it waits for the NW's response to the BFR process. This process can be referred to as BFRR.
  • the UE if the UE sends the CBRA PRACH to the cell where the non-UE exclusive channel/signal is located, then wait for the completion of 2 steps (Msg.A and Msg.B) or 4 steps (Msg.1) in the cell. /2/3/4) Random access process. If the process ends successfully, the UE considers the BFR process to be completed.
  • the UE can wait for the NW to send a PDCCH to confirm.
  • the PDCCH can use the same hybrid method as the previously scheduled PUSCH (BFR MAC CE).
  • HARQ Hybrid Automatic Repeat Request
  • ID ID
  • ID ID
  • NDI New Data Indication
  • the terminal equipment performs beam recovery
  • the UE completes the reporting of the new beam and the NW's confirmation of the new beam.
  • the UE can perform beam restoration behavior to restore the channel/signal to the new beam, or the desired channel/signal to restore the new beam (beam restoration of the downlink channel/signal can be performed by the network side). For example, for a downlink channel/signal, if the UE reports a new beam to the network device, the network device will restore the transmit beam of the downlink channel/signal to the new beam. Correspondingly, the UE will use the receive beam corresponding to the new beam. Receive the downlink channel/signal. For the uplink channel/signal, the UE restores the transmission beam of the uplink channel/signal to the new beam.
  • a similar beam recovery process can be performed for the serving cell of the first type of channel/signal (such as non-UE-specific channel/signal) and the neighboring cell/TRP of the second type of channel/signal (such as UE-specific channel/signal).
  • the beam failure detection method proposed in the embodiment of this application may also include: when the BFR MAC CE includes the identification of the new beam, the terminal device uses the receiving beam corresponding to the new beam to receive CORESET corresponding to the second PCI; and/or, the terminal equipment restores the PUCCH to the new beam.
  • the UE when the UE reports the candidate RS ID in the BFR MAC CE, the UE expects that all CORESET(s) corresponding to the PCI will be restored to the new beam reported in the BFR MAC CE, that is, the UE expects the network equipment to adopt the new beam. All CORESET(s) corresponding to the PCI are sent, and accordingly, the UE uses the receiving beam corresponding to the new beam to receive all CORESET(s) corresponding to the PCI; for the uplink, the PUCCH is also restored to the new beam, that is The UE uses the downlink receiving beam corresponding to the new beam as the new uplink transmitting beam.
  • the beam failure detection method proposed in the embodiment of the present application may also include: when the BFR MAC CE includes the identifier of the unified TCI state, for the second PCI, the terminal device uses the The receiving beam corresponding to the new beam receives the channel/signal corresponding to the unified TCI state; and/or, for the second PCI, the terminal device restores the channel/signal corresponding to the unified TCI state to the new on the beam.
  • the UE when the UE reports the unified TCI state, the UE also expects that for this PCI, the channels or signals corresponding to the unified TCI state will be restored to the new beam.
  • the identification of the unified TCI state may include the identification of the downlink (DL) TCI state or the identification of the joint (Joint) TCI state.
  • the terminal device uses the receiving beam corresponding to the new beam to receive the downlink channel/signal corresponding to the downlink TCI state.
  • the UE when the unified TCI state is DL TCI state, the UE expects that the PDCCH/PDSCH/Ap-CSI-RS of the cell or TRP will be restored to the new beam, that is, the UE expects the network equipment to use the new beam as the transmit beam for transmission. PDCCH/PDSCH/Ap-CSI-RS of the cell or TRP.
  • the UE uses the receiving beam corresponding to the new beam to receive the PDCCH/PDSCH/Ap-CSI-RS of the cell or TRP.
  • the terminal device uses the receiving beam corresponding to the new beam to receive the downlink channel/signal corresponding to the joint TCI state, And/or, for the second PCI, the terminal device restores the uplink channel/signal corresponding to the joint TCI state to the new beam.
  • the UE when the unified TCI state is joint TCI state, the UE expects the downlink channel/signal of the cell or TRP (i.e., PDCCH/PDSCH/Ap-CSI-RS) to be restored to the new beam, that is, the UE expects the network equipment to adopt
  • the new beam is used as a transmit beam to transmit the PDCCH/PDSCH/Ap-CSI-RS of the cell or TRP.
  • the UE uses the receive beam corresponding to the new beam to receive the PDCCH/PDSCH/Ap-CSI-RS of the cell or TRP.
  • the UE may use the new beam as a transmit beam to transmit uplink channels/signals (such as PUCCH/PUSCH/SRS).
  • FIG 12 is a schematic flow chart of a beam failure recovery method 1200 according to an embodiment of the present application. This method can optionally be applied to the system shown in Figure 1, but is not limited thereto. The method includes at least part of the following.
  • the network device configures for the terminal device at least one of the first reference signal of the first type of channel/signal and the second reference signal of the second type of channel/signal.
  • the second reference signal of the second type channel/signal is used to perform beam failure recovery on the first type channel/signal and the second type channel/signal respectively.
  • the first type of channel/signal is a non-UE-specific channel/signal or a UE-specific channel/signal of the terminal device
  • the second type of channel/signal is a UE-specific channel/signal or a non-UE-specific channel/signal of the terminal device. channel/signal.
  • the first reference signal includes at least one of BFD RS and NBI RS
  • the second reference signal may also include at least one of BFD RS and NBI RS.
  • the first type of channels/signals (such as non-UE-specific channels) resides in the original serving cell
  • the second type of channels/signals (such as non-UE-specific channels) may reside in the original serving cell with a different PCI. cell or TRP.
  • the network device can configure BFD RS for the UE's serving cell and multiple neighboring cells with different PCIs.
  • the network device configures the second reference signal of the second type channel/signal for the terminal device, including: the network device sends RRC signaling to the terminal device, and the RRC signaling includes the BFD RS configured by the network device for each neighboring cell/TRP.
  • BFD RS can include SSB or CSI-RS.
  • the network device can further activate BFD RS for the terminal device. For example, when the first neighboring cell/TRP is in the activated state, the network device sends the first MAC CE to the terminal device, and the first MAC CE is used to activate one or more BFD RSs of the first neighboring cell/TRP. A BFD RS.
  • the first MAC CE may include at least one of the following:
  • the first PCI corresponding to the cell/TRP
  • the network device can also configure NBI RS for the terminal device. For example, configure the BFD RS by configuring the corresponding relationship between the BFD RS and the NBI RS.
  • the network device configures at least one of the first reference signal of the first type of channel/signal and the second reference signal of the second type of channel/signal for the terminal equipment, including: the network equipment configures the terminal equipment with Send the corresponding relationship between BFD RS and NBI RS.
  • the NBI RS may include SSB or CSI-RS.
  • the network device After the terminal device finds a new beam, the network device allocates uplink resources for sending BFR MAC CE to the terminal device based on the request of the terminal device, and receives the BFR MAC CE sent by the terminal device on the uplink resource. According to the BFR MAC CE Restore the corresponding downlink channel/signal to the new beam.
  • the network device can further update the BFD RS for the terminal device.
  • the network device sends a second MAC CE to the terminal device.
  • the second MAC CE is used to update the BFD RS corresponding to the cell/TRP corresponding to the first type of channel/signal, and/or the second MAC CE is used to update the second type of channel/signal.
  • the second MAC CE may include at least one of the following:
  • the network device can further update the NBI RS for the terminal device.
  • the network device sends a third MAC CE to the terminal device, and the third MAC CE is used to update the NBI RS corresponding to the cell/TRP corresponding to the first type channel/signal, and/or, the third MAC CE is used to update the second type The cell corresponding to the channel/signal/NBI RS corresponding to the TRP.
  • the third MAC CE may include at least one of the following:
  • the network device can use a MAC CE to update the BFD RS and NBI RS for the terminal device.
  • the network device sends the fourth MAC CE to the terminal device.
  • the fourth MAC CE is used to update the BFD RS and NBI RS corresponding to the cell/TRP corresponding to the first type channel/signal, and/or the fourth MAC CE is used to update The BFD RS and NBI RS corresponding to the cell/TRP corresponding to the second type of channel/signal.
  • the fourth MAC CE may include at least one of the following:
  • the fourth PCI corresponding to the cell/TRP
  • FIG. 13 is a schematic block diagram of a terminal device 1300 according to an embodiment of the present application.
  • the terminal device 1300 may include:
  • Determining module 1310 configured to determine at least one of the first reference signal of the first type of channel/signal and the second reference signal of the second type of channel/signal;
  • the beam failure recovery module 1320 is configured to use the first reference signal of the first type of channel/signal to perform beam failure recovery on the first type of channel/signal; and/or use the second reference signal of the second type of channel/signal to perform beam failure recovery on the first type of channel/signal.
  • Class 2 channels/signals perform beam failure recovery.
  • the first type of channel/signal is a non-user equipment UE-specific channel/signal or a UE-specific channel/signal of the terminal device 1300
  • the second type of channel/signal is a UE-specific channel/signal of the terminal device 1300 or a non-user equipment UE-specific channel/signal.
  • UE-specific channel/signal is a non-user equipment UE-specific channel/signal or a UE-specific channel/signal of the terminal device 1300.
  • the first reference signal includes at least one of BFD RS and NBI RS.
  • the second reference signal includes at least one of BFD RS and NBI RS.
  • the determining module 1310 is configured to determine the BFD RS of the first neighboring cell/TRP when the first neighboring cell/transmission reception point TRP is in an activated state, and set the BFD RS of the first neighboring cell/TRP to BFD RS identified as type 2 channel/signal.
  • the determining module 1310 is configured to determine the BFD RS of the first neighboring cell/TRP according to the BFD RS configured by the network device for each neighboring cell/TRP.
  • the terminal device 1300 further includes:
  • the first receiving module is used to receive radio resource control RRC signaling.
  • the RRC signaling includes the BFD RS configured by the network device for each neighboring cell/TRP.
  • the determining module 1310 is configured to determine the BFD RS of the first neighboring cell/TRP according to the activated unified transmission configuration indication TCI status of the control resource set CORESET in the first neighboring cell/TRP.
  • the BFD RS includes a synchronization signal block SSB or a channel state information CSI-reference signal RS.
  • the beam failure recovery module 1320 is configured to receive the first MAC CE when the first neighboring cell/TRP is in an activated state, and the first MAC CE is used to activate the BFD RS of the first neighboring cell/TRP.
  • One or more BFD RSs in the BFD RS use the activated BFD RS to perform beam failure detection in beam failure recovery.
  • the first MAC CE includes at least one of the following:
  • the first PCI corresponding to the cell/TRP
  • the beam failure recovery module 1320 is configured to use the BFD RS of the second type of channel/signal to perform beam failure detection in beam failure recovery when the first neighbor cell/TRP is in the active state.
  • the determining module is configured to determine the NBI RS of the first type of channel/signal according to the BFD RS of the first type of channel/signal and the corresponding relationship between the BFD RS and the NBI RS; and/or, based on the second type of channel/signal, determine the NBI RS of the first type of channel/signal.
  • the BFD RS of the second type of channel/signal, and the corresponding relationship between the BFD RS and the NBI RS determine the NBI RS of the second type of channel/signal.
  • the terminal device 1300 further includes,
  • the second receiving module is used to receive the correspondence between BFD RS and NBI RS.
  • the determining module 1310 is configured to determine multiple first-category SSBs associated with the cell/TRP where the first-category channel/signal is located, and all or part of the first-category SSBs in the multiple first-category SSBs. As the NBI RS of the first type channel/signal; and/or, determine the multiple second type SSBs associated with the cell/TRP where the second type channel/signal is located, and combine all or part of the multiple second type SSBs.
  • Category 2 SSB serves as the NBI RS for the Category 2 channel/signal.
  • NBI RS includes SSB or CSI-RS.
  • the beam failure recovery module 1320 is configured to perform new beam selection in beam failure recovery for the NBI RS of the first type channel/signal after the BFD RS of the first type channel/signal is in an activated state; and /Or, after the BFD RS of the second type channel/signal is in the activated state, perform new beam selection in beam failure recovery for the NBI RS of the second type channel/signal.
  • the terminal device 1300 further includes:
  • the acquisition module is used to acquire the uplink resources for sending BFR MAC CE, and the BFR MAC CE is used to carry the new beam selected by the terminal device 1300.
  • the acquisition module is used to, when a beam failure occurs on the first type channel/signal, the cell/TRP where the first type channel/signal is located initiates a competition-based random access process to obtain the BFR MAC CE. Upstream resources.
  • the acquisition module is configured to, when a beam failure occurs on a second type channel/signal, send a physical uplink signal to the cell/TRP where the first type channel/signal is located or to the cell/TRP where the second type channel/signal is located.
  • Control channel PUCCH-scheduling request SR to obtain uplink resources for sending BFR MAC CE.
  • the acquisition module is configured to determine the PUCCH-SR associated with the BFD RS of the channel/signal where the beam failure occurs, and send the associated PUCCH-SR to obtain the uplink resource for sending the BFR MAC CE.
  • the terminal device 1300 further includes: a third receiving module, configured to receive the association relationship between the BFD RS and the PUCCH-SR;
  • the acquisition module is used to determine, according to the association relationship, the PUCCH-SR associated with the BFD RS of the channel/signal where the beam failure occurs.
  • the acquisition module is configured to initiate a competition-based random search to the cell/TRP where the first type channel/signal is located when beam failure occurs on both the first type channel/signal and the first type channel/signal. Access process to obtain uplink resources for sending BFR MAC CE.
  • the BFR MAC CE includes at least one of the following:
  • the second PCI corresponding to the cell/TRP
  • Indication information indicating whether a suitable new beam has been found
  • the terminal device 1300 further includes,
  • a first beam recovery module configured to use the receiving beam corresponding to the new beam to receive the CORESET corresponding to the second PCI when the BFR MAC CE includes the identification of the new beam; and/or, restore the PUCCH to on the new beam.
  • the terminal device 1300 further includes,
  • the second beam recovery module is configured to use the receiving beam corresponding to the new beam to receive the channel corresponding to the unified TCI state for the second PCI when the BFR MAC CE includes the identifier of the unified TCI state/ signal; and/or, for the second PCI, restore the channel/signal corresponding to the unified TCI state to the new beam.
  • the identification of the unified TCI state includes the identification of the downlink TCI state or the identification of the joint TCI state.
  • the second beam recovery module is configured to, when the BFR MAC CE includes the identifier of the downlink TCI state, for the second PCI, use the receiving beam corresponding to the new beam to receive the downlink Downlink channel/signal corresponding to TCI status.
  • the second beam recovery module is configured to, when the BFR MAC CE includes the identifier of the joint TCI state, for the second PCI, use the receiving beam corresponding to the new beam to receive the joint The downlink channel/signal corresponding to the TCI state, and/or, for the second PCI, restore the uplink channel/signal corresponding to the joint TCI state to the new beam.
  • the terminal device 1300 further includes:
  • the first update module is used to receive the second MAC CE, and the second MAC CE is used to update the BFD RS corresponding to the cell/TRP corresponding to the first type channel/signal, and/or, the second MAC CE is used to update the second type The BFD RS corresponding to the cell/TRP corresponding to the channel/signal.
  • the second MAC CE includes at least one of the following:
  • the CSI-RS number of the updated BFD RS is the CSI-RS number of the updated BFD RS
  • the SSB number of the updated BFD RS is the SSB number of the updated BFD RS.
  • the terminal device 1300 further includes:
  • the second update module is used to receive the third MAC CE, and the third MAC CE is used to update the NBI RS corresponding to the cell/TRP corresponding to the first type channel/signal, and/or, the third MAC CE is used to update the second type The cell corresponding to the channel/signal/NBI RS corresponding to the TRP.
  • the third MAC CE includes at least one of the following:
  • the terminal device 1300 further includes:
  • the third update module is used to receive the fourth MAC CE.
  • the fourth MAC CE is used to update the BFD RS and NBI RS corresponding to the cell/TRP corresponding to the first type channel/signal, and/or the fourth MAC CE is used to update.
  • the fourth MAC CE includes at least one of the following:
  • the fourth PCI corresponding to the cell/TRP
  • the terminal device 1300 in the embodiment of the present application can implement the corresponding functions of the terminal device in the aforementioned method 500 and 1200 embodiments.
  • each module (sub-module, unit or component, etc.) in the terminal device 1300 please refer to the corresponding description in the above method embodiment, and will not be described again here.
  • the functions described for each module (sub-module, unit or component, etc.) in the terminal device 1300 of the application embodiment can be implemented by different modules (sub-module, unit or component, etc.), or can be implemented by the same module. Module (submodule, unit or component, etc.) implementation.
  • FIG. 14 is a schematic block diagram of a network device 1400 according to an embodiment of the present application.
  • the network device 1400 may include:
  • Configuration module 1410 configured to configure at least one of the first reference signal of the first type of channel/signal and the second reference signal of the second type of channel/signal for the terminal device 1300.
  • the first reference signal of the first type of channel/signal is The signal and the second reference signal of the second type channel/signal are respectively used for beam failure recovery of the first type channel/signal and the second type channel/signal.
  • the first type of channels/signals are non-UE exclusive channels/signals or UE exclusive channels/signals of the terminal equipment
  • the second type of channels/signals are UE exclusive channels/signals or non-UE exclusive channels/signals of the terminal equipment. Signal.
  • the first reference signal includes at least one of BFD RS and NBI RS.
  • the second reference signal includes at least one of BFD RS and NBI RS.
  • the configuration module 1410 is configured to send RRC signaling to the terminal device 1300, where the RRC signaling includes the BFD RS configured by the network device 1400 for each neighboring cell/TRP.
  • BFD RS includes SSB or CSI-RS.
  • network device 1400 also includes:
  • the first sending module is used to send the first MAC CE to the terminal device 1300 when the first neighboring cell/TRP is in the activated state.
  • the first MAC CE is used to activate one of the BFD RSs of the first neighboring cell/TRP. or multiple BFD RS.
  • the first MAC CE includes at least one of the following:
  • the first PCI corresponding to the cell/TRP
  • the configuration module 1410 is configured to send the corresponding relationship between the BFD RS and the NBI RS to the terminal device 1300.
  • NBI RS includes SSB or CSI-RS.
  • network device 1400 also includes:
  • the second sending module is used to send the second MAC CE to the terminal device 1300.
  • the second MAC CE is used to update the BFD RS corresponding to the cell/TRP corresponding to the first type channel/signal, and/or the second MAC CE is used to Update the BFD RS corresponding to the cell/TRP corresponding to the second type channel/signal.
  • the second MAC CE includes at least one of the following:
  • the CSI-RS number of the updated BFD RS is the CSI-RS number of the updated BFD RS
  • the SSB number of the updated BFD RS is the SSB number of the updated BFD RS.
  • network device 1400 also includes:
  • the third sending module is used to send the third MAC CE to the terminal device 1300.
  • the third MAC CE is used to update the NBI RS corresponding to the cell/TRP corresponding to the first type channel/signal, and/or the third MAC CE is used to Update the NBI RS corresponding to the cell/TRP corresponding to the second type channel/signal.
  • the third MAC CE includes at least one of the following:
  • network device 1400 also includes:
  • the fourth sending module is used to send the fourth MAC CE to the terminal device 1300.
  • the fourth MAC CE is used to update the BFD RS and NBI RS corresponding to the cell/TRP corresponding to the first type channel/signal, and/or, the fourth MAC CE is used to update the BFD RS and NBI RS corresponding to the cell/TRP corresponding to the second type channel/signal.
  • the fourth MAC CE includes at least one of the following:
  • the fourth PCI corresponding to the cell/TRP
  • the network device 1400 in the embodiment of the present application can implement the corresponding functions of the network device in the aforementioned method 500 and 1200 embodiments.
  • each module (sub-module, unit or component, etc.) in the network device 1400 please refer to the corresponding description in the above method embodiment, and will not be described again here.
  • the functions described for each module (sub-module, unit or component, etc.) in the network device 1400 of the application embodiment can be implemented by different modules (sub-module, unit or component, etc.), or can be implemented by the same module. Module (submodule, unit or component, etc.) implementation.
  • Figure 15 is a schematic structural diagram of a communication device 1500 according to an embodiment of the present application.
  • the communication device 1500 includes a processor 1510, and the processor 1510 can call and run a computer program from the memory, so that the communication device 1500 implements the method in the embodiment of the present application.
  • the communication device 1500 may also include a memory 1520.
  • the processor 1510 can call and run the computer program from the memory 1520, so that the communication device 1500 implements the method in the embodiment of the present application.
  • the memory 1520 may be a separate device independent of the processor 1510, or may be integrated into the processor 1510.
  • the communication device 1500 may also include a transceiver 1530, and the processor 1510 may control the transceiver 1530 to communicate with other devices. Specifically, the communication device 1500 may send information or data to, or receive data from, other devices. Information or data sent.
  • the transceiver 1530 may include a transmitter and a receiver.
  • the transceiver 1530 may further include an antenna, and the number of antennas may be one or more.
  • the communication device 1500 can be the terminal device 1300 of the embodiment of the present application, and the communication device 1500 can implement the corresponding processes implemented by the terminal device in each method of the embodiment of the present application. For the sake of simplicity, I won’t go into details here.
  • the communication device 1500 can be the network device 1400 in the embodiment of the present application, and the communication device 1500 can implement the corresponding processes implemented by the network device in each method of the embodiment of the present application. For the sake of simplicity, I won’t go into details here.
  • FIG 16 is a schematic structural diagram of a chip 1600 according to an embodiment of the present application.
  • the chip 1600 includes a processor 1610, and the processor 1610 can call and run a computer program from the memory to implement the method in the embodiment of the present application.
  • the chip 1600 may also include a memory 1620.
  • the processor 1610 can call and run the computer program from the memory 1620 to implement the method executed by the communication device in the embodiment of the present application.
  • the memory 1620 may be a separate device independent of the processor 1610, or may be integrated into the processor 1610.
  • the chip 1600 may also include an input interface 1630.
  • the processor 1610 can control the input interface 1630 to communicate with other devices or chips. Specifically, it can obtain information or data sent by other devices or chips.
  • the chip 1600 may also include an output interface 1640.
  • the processor 1610 can control the output interface 1640 to communicate with other devices or chips. Specifically, it can output information or data to other devices or chips.
  • the chip can be applied to the terminal device 1300 in the embodiment of the present application, and the chip can implement the corresponding processes implemented by the terminal device in each method of the embodiment of the present application. For the sake of simplicity, here No longer.
  • the chip can be applied to the network device 1400 in the embodiment of the present application, and the chip can implement the corresponding processes implemented by the network device in each method of the embodiment of the present application. For the sake of simplicity, here No longer.
  • the chips used in terminal equipment and network equipment can be the same chip or different chips.
  • chips mentioned in the embodiments of this application may also be called system-on-chip, system-on-a-chip, system-on-chip or system-on-chip, etc.
  • the processor mentioned above can be a general-purpose processor, a digital signal processor (DSP), an off-the-shelf programmable gate array (FPGA), an application specific integrated circuit (ASIC), or Other programmable logic devices, transistor logic devices, discrete hardware components, etc.
  • DSP digital signal processor
  • FPGA off-the-shelf programmable gate array
  • ASIC application specific integrated circuit
  • the above-mentioned general processor may be a microprocessor or any conventional processor.
  • non-volatile memory may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory.
  • non-volatile memory can be read-only memory (ROM), programmable ROM (PROM), erasable programmable read-only memory (erasable PROM, EPROM), electrically removable memory. Erase electrically programmable read-only memory (EPROM, EEPROM) or flash memory.
  • Volatile memory can be random access memory (RAM).
  • the memory in the embodiment of the present application can also be a static random access memory (static RAM, SRAM), a dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous 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, memories in embodiments of the present application are intended to include, but are not limited to, these and any other suitable types of memories.
  • FIG 17 is a schematic block diagram of a communication system 1700 according to an embodiment of the present application.
  • the communication system 1700 includes a terminal device 1710 and a network device 1720.
  • Terminal equipment 1710 configured to determine at least one of the first reference signal of the first type of channel/signal and the second reference signal of the second type of channel/signal; use the first reference signal of the first type of channel/signal to Perform beam failure recovery on the first type of channel/signal; and/or perform beam failure recovery on the second type of channel/signal using the second reference signal of the second type of channel/signal.
  • Terminal equipment 1710 configured to determine at least one of the first reference signal of the first type of channel/signal and the second reference signal of the second type of channel/signal; use the first reference signal of the first type of channel/signal to Perform beam failure recovery on the first type of channel/signal; and/or perform beam failure recovery on the second type of channel/signal using the second reference signal of the second type of channel/signal.
  • Network device 1710 configured to configure at least one of the first reference signal of the first type of channel/signal and the second reference signal of the second type of channel/signal for the terminal device, the first reference signal of the first type of channel/signal and the second reference signal for the second type channel/signal are respectively used to perform beam failure recovery on the first type channel/signal and the second type channel/signal.
  • the relevant description in method 1200 please refer to the relevant description in method 1200. For the sake of brevity, no further details will be given here.
  • the terminal device 1710 can be used to implement the corresponding functions implemented by the terminal device in the above method
  • the network device 1720 can be used to implement the corresponding functions implemented by the network device in the above method.
  • no further details will be given here.
  • the computer program product includes one or more computer instructions.
  • the computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted over a wired connection from a website, computer, server, or data center (such as coaxial cable, optical fiber, Digital Subscriber Line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) means to transmit to another website, computer, server or data center.
  • the computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center integrated with one or more available media.
  • the available media may be magnetic media (eg, floppy disk, hard disk, tape), optical media (eg, DVD), or semiconductor media (eg, Solid State Disk (SSD)), etc.
  • the size of the sequence numbers of the above-mentioned processes does not mean the order of execution.
  • the execution order of each process should be determined by its functions and internal logic, and should not be used in the embodiments of the present application.
  • the implementation process constitutes any limitation.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente demande concerne un procédé de récupération après défaillance de faisceau, un dispositif terminal et un dispositif de réseau. Le procédé de récupération après défaillance de faisceau comprend les étapes suivantes : un dispositif terminal détermine au moins l'un d'un premier signal de référence d'un canal/signal de premier type et d'un second signal de référence d'un canal/signal de second type ; le dispositif terminal effectue une récupération après défaillance de faisceau sur le canal/signal de premier type en utilisant le premier signal de référence du canal/signal de premier type ; et/ou le dispositif terminal effectue une récupération après défaillance de faisceau sur le canal/signal de second type en utilisant le second signal de référence du canal/signal de second type. Selon les modes de réalisation de la présente demande, une récupération après défaillance de faisceau flexible peut être réalisée.
PCT/CN2022/084649 2022-03-31 2022-03-31 Procédé de récupération après défaillance de faisceau, dispositif terminal et dispositif de réseau WO2023184431A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202280074533.7A CN118216113A (zh) 2022-03-31 2022-03-31 波束失败恢复方法、终端设备和网络设备
PCT/CN2022/084649 WO2023184431A1 (fr) 2022-03-31 2022-03-31 Procédé de récupération après défaillance de faisceau, dispositif terminal et dispositif de réseau

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PCT/CN2022/084649 WO2023184431A1 (fr) 2022-03-31 2022-03-31 Procédé de récupération après défaillance de faisceau, dispositif terminal et dispositif de réseau

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Citations (4)

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Publication number Priority date Publication date Assignee Title
US20220022120A1 (en) * 2020-07-20 2022-01-20 Qualcomm Incorporated Radio link management for ultra-reliable low-latency communication
CN114070523A (zh) * 2020-08-07 2022-02-18 大唐移动通信设备有限公司 传输失败恢复方法、装置、设备及存储介质
CN114071535A (zh) * 2020-08-07 2022-02-18 华为技术有限公司 一种通信方法及装置
CN114501626A (zh) * 2020-10-23 2022-05-13 大唐移动通信设备有限公司 消息处理方法、装置、终端设备、网络设备及存储介质

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220022120A1 (en) * 2020-07-20 2022-01-20 Qualcomm Incorporated Radio link management for ultra-reliable low-latency communication
CN114070523A (zh) * 2020-08-07 2022-02-18 大唐移动通信设备有限公司 传输失败恢复方法、装置、设备及存储介质
CN114071535A (zh) * 2020-08-07 2022-02-18 华为技术有限公司 一种通信方法及装置
CN114501626A (zh) * 2020-10-23 2022-05-13 大唐移动通信设备有限公司 消息处理方法、装置、终端设备、网络设备及存储介质

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