WO2021159398A1 - Procédé et appareil de récupération de défaillance de faisceau - Google Patents

Procédé et appareil de récupération de défaillance de faisceau Download PDF

Info

Publication number
WO2021159398A1
WO2021159398A1 PCT/CN2020/075106 CN2020075106W WO2021159398A1 WO 2021159398 A1 WO2021159398 A1 WO 2021159398A1 CN 2020075106 W CN2020075106 W CN 2020075106W WO 2021159398 A1 WO2021159398 A1 WO 2021159398A1
Authority
WO
WIPO (PCT)
Prior art keywords
terminal
mac
network device
transmission beam
response message
Prior art date
Application number
PCT/CN2020/075106
Other languages
English (en)
Chinese (zh)
Inventor
管鹏
张希
樊波
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2020/075106 priority Critical patent/WO2021159398A1/fr
Priority to CN202080095095.3A priority patent/CN115039486A/zh
Publication of WO2021159398A1 publication Critical patent/WO2021159398A1/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria

Definitions

  • This application relates to the field of communications, and more specifically, to a method and device for beam failure recovery.
  • analog beams are directional.
  • the main lobe direction and beam width (for example, 3dB) can be used to describe an analog beam pattern.
  • the narrower the beam width the greater the antenna gain.
  • Network devices and terminals can send and receive in specific directions. Take the following communication as an example. The network device sends in a specific direction, and the terminal device receives in a specific direction. Normal communication can only be realized when the sending and receiving directions are aligned. In order to achieve beam alignment (that is, alignment of the transmit beam at the transmitting end and the receive beam at the receiving end), beam training is required.
  • downlink beam training is achieved by sending one or more reference signals through the network device, and the terminal measures the reference signals sent by the network device and reporting the measurement results.
  • Downlink beam training can complete beam selection, beam quality measurement and reporting, beam tracking and other functions.
  • This process can be called beam failure recovery (BFR) process, or link recovery process (link recovery procedures).
  • the present application provides a method and device for beam failure recovery.
  • the terminal can achieve rapid communication with the network device, that is, reduce The time delay of beam failure recovery.
  • a method for beam failure recovery includes: receiving a trigger message when a terminal fails in a beam of a first transmission beam with a network device and does not find a second transmission beam, and
  • the second transmission beam is a transmission beam that the network device can communicate with the terminal; the terminal receives multiple reference signals from the network device according to the trigger message, and the multiple reference signals are used to determine the second transmission beam.
  • the first transmission beam is the transmission beam of the network device. If the first transmission beam of the communication between the terminal and the network device fails and the second transmission beam is not found, the terminal detects and receives the trigger message sent by the network device. After receiving the trigger message, the terminal can perform beam training again. For example, the terminal may adjust the current state to the state of receiving the reference signal.
  • the terminal may receive multiple reference signals sent from the network device, where the reference signal and the transmission beam may have an association relationship or a mapping relationship, so that the terminal can determine a second transmission beam capable of communicating with the terminal according to the multiple reference signals. In other words, the terminal does not need to reconnect to the network device to achieve beam recovery, and the delay of beam recovery is relatively short compared to reconnecting to the network device. That is, the embodiment of the present application can help reduce beam failure recovery. Time delay.
  • the method further includes: when the terminal does not find the second transmission beam in the first transmission beam set, selecting the second transmission beam from the second transmission beam set, wherein the multiple The reference signal corresponds to the transmission beams in the second transmission beam set, and the transmission beams included in the second transmission beam set may be partially or completely different from the transmission beams in the first transmission beam set.
  • the network device may configure a new available transmission beam set for the terminal by sending a beam set. If the terminal does not find a second transmission beam in the first transmission beam set, the network device may also configure a second transmission beam set for the terminal. Since the second transmit beam set has beams that are not included in the first transmit beam set, the terminal may find the second transmit beam from the second transmit beam set, so that the terminal can achieve beam failure recovery and improve the success of beam failure recovery Rate.
  • the method further includes: the terminal sends a media intervention control control unit MAC CE, where the MAC CE is used to indicate that the beam of the first transmission beam between the terminal and the network device has failed and is not found The second transmission beam; the terminal receives the MAC CE response message, the MAC CE response message is used to indicate that the network device has received the MAC CE; where the terminal is in the first transmission beam between the network device In the case that the beam fails and the second transmission beam is not found, receiving the trigger message includes: the terminal receives the trigger message after receiving the response message of the MAC CE.
  • the trigger message may be sent by the network device separately, which improves the flexibility of the network device to send the trigger message.
  • the method further includes: the terminal sends a MAC CE, where the MAC CE is used to indicate that the terminal has failed in the beam of the first transmission beam with the network device, and the second transmission beam is not found.
  • Transmission beam wherein, in the case that the first transmission beam between the terminal and the network device fails, and the second transmission beam is not found, the receiving trigger message includes: the terminal is between the network device and the network device. If the beam of the first transmission beam fails and the second transmission beam is not found, the MAC CE response message is received. The MAC CE response message is used to indicate that the network device has received the MAC CE, and the MAC CE The response message includes the trigger message.
  • the response message of the MAC CE may carry the trigger message, which reduces the time for the terminal to wait for the trigger message, that is, accelerates the terminal to find a new available beam.
  • the embodiments of the present application can further reduce the time delay of beam failure recovery.
  • the method further includes: when the terminal receives the response message of the MAC CE, stopping detecting the reference signal corresponding to the first transmission beam.
  • the terminal When the terminal receives the MAC CE response message and determines that the beam of the first transmission beam fails, it can stop detecting the reference signal corresponding to the first transmission beam, avoiding the power consumption caused by continuously detecting the reference signal corresponding to the first transmission beam Waste, that is, the embodiment of the present application saves the power consumption of the terminal.
  • the method further includes: when receiving the MAC CE response message, the terminal stops sending indication information to the upper layer, where the indication information is used to indicate that the beam of the first transmission beam fails.
  • the terminal Since the terminal has successfully fed back the beam failure information to the network device, there is no need to perform beam failure detection for the first transmission beam, thereby saving the power consumption of the terminal.
  • the method further includes: when the terminal receives the MAC CE response message, stopping or not starting the beam failure timer.
  • the terminal may not stop the timing of the beam failure timer or not start the timing of the beam failure timer. In this way, the terminal can wait for beam recovery without performing follow-up operations after beam failure, for example, the terminal reconnects to the network device, which saves the power consumption of the terminal.
  • the method further includes: the terminal communicates with the network device using the second transmission beam.
  • the network device can use the second transmitting beam to communicate with the terminal, which realizes rapid recovery of beam failure and reduces the time delay of beam failure recovery.
  • a method for beam failure recovery includes: when the first transmission beam between the network device and the terminal fails, and the terminal does not find the second transmission beam, the terminal Send a trigger message, the trigger message is used to trigger the terminal to detect a reference signal, where the second transmission beam is a transmission beam that the network device can communicate with the terminal; the network device sends multiple reference signals to the terminal, and the multiple A reference signal is used to determine the second transmission beam.
  • the terminal detects and receives the trigger message sent by the network device, so that the terminal, after receiving the trigger message, Perform beam training again. For example, the terminal may adjust the current state to the state of receiving the reference signal.
  • the terminal may receive multiple reference signals sent from the network device, where the reference signal and the transmission beam may have an association relationship or a mapping relationship, so that the terminal can determine a second transmission beam capable of communicating with the terminal according to the multiple reference signals.
  • the terminal does not need to reconnect to the network device to achieve beam recovery, and the delay of beam recovery is relatively short compared to reconnecting to the network device. That is, the embodiment of the present application can help reduce beam failure recovery. Time delay.
  • the method before the network device sends the trigger message to the terminal, the method further includes: the network device receives a media intervention control unit MAC CE from the terminal, and the MAC CE is used to instruct the terminal to communicate with the terminal. The beam of the first transmission beam between the network devices failed, and the second transmission beam was not found; the network device sends the MAC CE response message to the terminal, and the MAC CE response message is used to instruct the network device to receive To the MAC CE.
  • the trigger message can be sent separately, which improves the flexibility of sending the trigger message.
  • the method further includes: the network device receives a MAC CE from the terminal, where the MAC CE is used to indicate that the beam of the first transmission beam between the terminal and the network device has failed and is not found The second transmission beam; wherein, in the case that the first transmission beam between the network device and the terminal fails, and the terminal does not find the second transmission beam, sending a trigger message to the terminal includes: the network device is After receiving the MAC CE, send a response message of the MAC CE to the terminal. The response message of the MAC CE is used to indicate that the network device has received the MAC CE, and the response message of the MAC CE includes the trigger message.
  • the network device can carry the trigger message through the response message of the MAC CE, which reduces the time for the terminal to wait for the trigger message and speeds up the time for the terminal to find a new available beam.
  • the method further includes: the network device communicates with the terminal through the second transmission beam.
  • the network device can use the second transmitting beam to communicate with the terminal, which realizes rapid recovery of beam failure and reduces the time delay of beam failure recovery.
  • an apparatus for beam failure recovery includes: a receiving module for receiving a trigger message when the beam of the first transmit beam with the network device fails and the second transmit beam is not found ,
  • the second transmission beam is a transmission beam that the network device can communicate with the terminal;
  • the receiving module is further configured to receive multiple reference signals from the network device according to the trigger message, and the multiple reference signals are used to determine the second transmission beam.
  • the device further includes a sending module configured to send a media intervention control control unit MAC CE, where the MAC CE is used to indicate the beam of the first sending beam between the terminal and the network device Failed, and the second transmission beam is not found; the receiving module is also used to receive a response message of the MAC CE, and the response message of the MAC CE is used to indicate that the network device has received the MAC CE; where the receiving module is specifically Used to: receive the trigger message after receiving the MAC CE response message.
  • a sending module configured to send a media intervention control control unit MAC CE, where the MAC CE is used to indicate the beam of the first sending beam between the terminal and the network device Failed, and the second transmission beam is not found
  • the receiving module is also used to receive a response message of the MAC CE, and the response message of the MAC CE is used to indicate that the network device has received the MAC CE; where the receiving module is specifically Used to: receive the trigger message after receiving the MAC CE response message.
  • the device further includes a sending module configured to send a MAC CE, and the MAC CE is used to indicate that the terminal has failed the beam of the first sending beam between the terminal and the network device, and The second transmission beam is not found; wherein, the receiving module is specifically configured to: when the beam of the first transmission beam with the network device fails and the second transmission beam is not found, receive the MAC CE A response message, the MAC CE response message is used to indicate that the network device has received the MAC CE, and the MAC CE response message includes the trigger message.
  • a sending module configured to send a MAC CE
  • the MAC CE is used to indicate that the terminal has failed the beam of the first sending beam between the terminal and the network device, and The second transmission beam is not found
  • the receiving module is specifically configured to: when the beam of the first transmission beam with the network device fails and the second transmission beam is not found, receive the MAC CE A response message, the MAC CE response message is used to indicate that the network device has received the MAC CE, and the MAC CE response message includes the trigger
  • the device further includes a processing module configured to stop detecting the reference signal corresponding to the first transmission beam when the response message of the MAC CE is received.
  • the device further includes a processing module configured to stop sending instruction information to the upper layer when receiving a response message from the MAC CE.
  • the instruction information is used to indicate the first transmission beam The beam failed.
  • the device further includes a processing module configured to stop or not start the timing of the beam failure timer when a response message of the MAC CE is received.
  • the receiving module is also used to communicate with the network device using the second transmitting beam.
  • an apparatus for beam failure recovery includes: a transmitting module, configured to send a transmission to the terminal when the beam of the first transmit beam with the terminal fails and the terminal does not find the second transmit beam
  • the terminal sends a trigger message, where the trigger message is used to trigger the terminal to detect a reference signal, where the second transmission beam is a transmission beam that the network device can communicate with the terminal;
  • the sending module is further configured to send multiple reference signals to the terminal, and the multiple reference signals are used to determine the second transmission beam.
  • the device further includes a receiving module configured to receive a media intervention control unit MAC CE from the terminal, and the MAC CE is used to indicate the first communication between the terminal and the network device.
  • the beam of the transmission beam fails, and the second transmission beam is not found;
  • the sending module is also used to send a response message of the MAC CE to the terminal, and the response message of the MAC CE is used to indicate that the network device receives the MAC CE.
  • the device further includes a receiving module configured to receive a MAC CE from the terminal, and the MAC CE is used to indicate the failure of the first transmission beam between the terminal and the network device , And the second transmission beam is not found; wherein, the sending module is specifically configured to: after receiving the MAC CE, send a response message of the MAC CE to the terminal, and the response message of the MAC CE is used to indicate the network device The MAC CE is received, and the response message of the MAC CE includes the trigger message.
  • the sending module is also used to communicate with the terminal through the second sending beam.
  • a device for beam failure recovery may be a terminal or a chip in the terminal.
  • the device has the function of realizing the above-mentioned first aspect and various possible implementation manners. This function can be realized by hardware, or by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above-mentioned functions.
  • the device includes a transceiver module and a processing module, and the transceiver module may include a receiving module and a sending module.
  • the transceiver module may be, for example, at least one of a transceiver, a receiver, and a transmitter, and the transceiver module may include a radio frequency circuit or an antenna.
  • the processing module may be a processor.
  • the device further includes a storage module, and the storage module may be a memory, for example. When a storage module is included, the storage module is used to store instructions.
  • the processing module is connected to the storage module, and the processing module can execute the instructions stored in the storage module or from other instructions, so that the device executes the above-mentioned first aspect and various possible implementation modes of communication methods.
  • the device can be a terminal.
  • the chip when the device is a chip, the chip includes a transceiver module and a processing module, and the transceiver module may include a receiving module and a sending module.
  • the transceiver module may be an input/output interface, pin or circuit on the chip, for example.
  • the processing module may be a processor, for example.
  • the processing module can execute instructions so that the chip in the terminal executes the above-mentioned first aspect and any possible implemented communication method.
  • the processing module may execute instructions in the storage module, and the storage module may be a storage module in the chip, such as a register, a cache, and the like.
  • the storage module can also be located in the communication device but outside the chip, such as read-only memory (ROM) or other types of static storage devices that can store static information and instructions, random access memory (random access memory) memory, RAM) etc.
  • ROM read-only memory
  • RAM random access memory
  • the processor mentioned in any of the above can be a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more for controlling the above All aspects of communication method program execution integrated circuit.
  • CPU central processing unit
  • ASIC application-specific integrated circuit
  • a device for beam failure recovery may be a network device or a chip in the network device.
  • the device has the function of realizing the above-mentioned second aspect and various possible implementation manners. This function can be realized by hardware, or by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above-mentioned functions.
  • the device includes a transceiver module and a processing module, and the transceiver module may include a receiving module and a sending module.
  • the transceiver module may be, for example, at least one of a transceiver, a receiver, and a transmitter, and the transceiver module may include a radio frequency circuit or an antenna.
  • the processing module may be a processor.
  • the device further includes a storage module, and the storage module may be a memory, for example.
  • the storage module is used to store instructions.
  • the processing module is connected to the storage module, and the processing module can execute instructions stored in the storage module or instructions derived from other sources, so that the device executes the above-mentioned second aspect or any one of the methods thereof.
  • the chip when the device is a chip, the chip includes a transceiver module and a processing module, and the transceiver module may include a receiving module and a sending module.
  • the transceiver module may be an input/output interface, pin or circuit on the chip, for example.
  • the processing module may be a processor, for example. The processing module can execute instructions to make the chip in the network device execute the second aspect described above and any possible implementation communication method.
  • the processing module may execute instructions in the storage module, and the storage module may be a storage module in the chip, such as a register, a cache, and the like.
  • the storage module may also be located in the communication device but outside the chip, such as ROM or other types of static storage devices that can store static information and instructions, RAM, etc.
  • the processor mentioned in any of the above may be a CPU, a microprocessor, an application-specific integrated circuit ASIC, or one or more integrated circuits used to control the execution of the programs of the above-mentioned various aspects of the communication method.
  • a computer storage medium is provided, and program code is stored in the computer storage medium, and the program code is used to instruct instructions to execute the method in the above-mentioned first aspect and any possible implementation manners thereof.
  • a computer storage medium is provided, and program code is stored in the computer storage medium, and the program code is used to instruct instructions to execute the method in the second aspect and any possible implementations thereof.
  • a computer program product containing instructions which when running on a computer, causes the computer to execute the method in the first aspect described above, or any possible implementation manner thereof.
  • a computer program product containing instructions which when running on a computer, causes the computer to execute the method in the second aspect described above, or any possible implementation manner thereof.
  • a communication system in an eleventh aspect, includes the device described in the fifth aspect and the device described in the sixth aspect.
  • a communication system in a twelfth aspect, includes the device described in the third aspect and the device described in the fourth aspect.
  • the terminal detects and receives the trigger message sent by the network device. After the terminal receives the trigger message, it can perform beam training again, that is, the terminal can receive multiple reference signals sent from the network device, so that the terminal can determine the second transmission that can communicate with the terminal based on the multiple reference signals. Beam. In other words, the terminal does not need to reconnect to the network device to achieve beam recovery, and the delay of beam recovery is relatively short compared to reconnecting to the network device. That is, the embodiment of the present application can help reduce beam failure recovery. Time delay.
  • Figure 1 is a schematic diagram of a communication system of the present application
  • Figure 2 is a schematic flow chart of beam failure recovery in a traditional scheme
  • FIG. 3 is a schematic flowchart of a method for transmitting a random access preamble according to an embodiment of the present application
  • FIG. 4 is a schematic block diagram of an apparatus for transmitting a random access preamble according to an embodiment of the present application
  • FIG. 5 is a schematic structural diagram of an apparatus for transmitting a random access preamble according to an embodiment of the present application
  • FIG. 6 is a schematic block diagram of an apparatus for transmitting a random access preamble according to another embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of an apparatus for transmitting a random access preamble according to another embodiment of the present application.
  • FIG. 8 is a schematic diagram of an apparatus for transmitting a random access preamble according to another specific embodiment of the present application.
  • FIG. 9 is a schematic diagram of an apparatus for transmitting a random access preamble according to another specific embodiment of the present application.
  • FIG. 10 is a schematic diagram of an apparatus for transmitting a random access preamble according to another specific embodiment of the present application.
  • FIG. 11 is a schematic diagram of an apparatus for transmitting a random access preamble according to another specific embodiment of the present application.
  • GSM global system for mobile communications
  • CDMA code division multiple access
  • WCDMA broadband code division multiple access
  • GPRS general packet radio service
  • LTE long term evolution
  • FDD frequency division duplex
  • TDD LTE Time division duplex
  • UMTS universal mobile telecommunication system
  • WiMAX worldwide interoperability for microwave access
  • the terminal in the embodiments of the present application may refer to user equipment, access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal device, wireless communication device, user agent, or User device.
  • the terminal can also be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), and a wireless communication function Handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminals in the future 5G network or terminals in the future evolved public land mobile network (PLMN), etc. This embodiment of the present application does not limit this.
  • the network equipment in the embodiments of the present application may be equipment used to communicate with terminals.
  • the network equipment may be a global system for mobile communications (GSM) system or code division multiple access (CDMA).
  • GSM global system for mobile communications
  • CDMA code division multiple access
  • the base transceiver station (BTS) can also be a base station (NodeB, NB) in a wideband code division multiple access (WCDMA) system, or an evolved base station (evoled NodeB) in an LTE system.
  • NodeB base station
  • WCDMA wideband code division multiple access
  • evoled NodeB evolved base station
  • ENB or eNodeB it can also be a wireless controller in a cloud radio access network (CRAN) scenario, or the network device can be a relay station, an access point, a vehicle-mounted device, a wearable device, and the future 5G
  • a baseband unit (BBU), or a distributed unit (DU), etc. are not limited in the embodiment of the present application.
  • the gNB may include a centralized unit (CU) and a DU.
  • the gNB may also include an active antenna unit (AAU).
  • the CU implements some of the functions of the gNB, and the DU implements some of the functions of the gNB.
  • the CU is responsible for processing non-real-time protocols and services, and implements radio resource control (radio resource control, RRC) and packet data convergence protocol (packet data convergence protocol, PDCP) layer functions.
  • RRC radio resource control
  • PDCP packet data convergence protocol
  • the DU is responsible for processing the physical layer protocol and real-time services, and realizes the functions of the radio link control (RLC) layer, the media access control (MAC) layer, and the physical (PHY) layer.
  • RLC radio link control
  • MAC media access control
  • PHY physical
  • AAU realizes some physical layer processing functions, radio frequency processing and related functions of active antennas. Since the information of the RRC layer will eventually become the information of the PHY layer, or be transformed from the information of the PHY layer, under this architecture, high-level signaling, such as RRC layer signaling, can also be considered to be sent by the DU , Or, sent by DU+AAU.
  • the network device may be a device that includes one or more of a CU node, a DU node, and an AAU node.
  • the CU can be divided into network equipment in an access network (radio access network, RAN), and the CU can also be divided into network equipment in a core network (core network, CN), which is not limited in this application.
  • the terminal or network device includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer.
  • the hardware layer includes hardware such as a central processing unit (CPU), a memory management unit (MMU), and memory (also referred to as main memory).
  • the operating system can be any one or more computer operating systems that implement business processing through processes, for example, Linux operating systems, Unix operating systems, Android operating systems, iOS operating systems, or windows operating systems.
  • the application layer includes applications such as browsers, address books, word processing software, and instant messaging software.
  • the embodiments of the application do not specifically limit the specific structure of the execution body of the method provided in the embodiments of the application, as long as the program that records the codes of the methods provided in the embodiments of the application can be provided in accordance with the embodiments of the application.
  • the execution subject of the method provided in the embodiment of the present application may be a terminal or a network device, or a functional module in the terminal or network device that can call and execute the program.
  • various aspects or features of the present application can be implemented as methods, devices, or products using standard programming and/or engineering techniques.
  • article of manufacture used in this application encompasses a computer program accessible from any computer-readable device, carrier, or medium.
  • computer-readable media may include, but are not limited to: magnetic storage devices (for example, hard disks, floppy disks, or tapes, etc.), optical disks (for example, compact discs (CD), digital versatile discs (DVD)) Etc.), smart cards and flash memory devices (for example, erasable programmable read-only memory (EPROM), cards, sticks or key drives, etc.).
  • various storage media described herein may represent one or more devices and/or other machine-readable media for storing information.
  • machine-readable medium may include, but is not limited to, wireless channels and various other media capable of storing, containing, and/or carrying instructions and/or data.
  • Fig. 1 is a schematic diagram of a communication system of the present application.
  • the communication system in FIG. 1 may include at least one terminal (for example, the terminal 10, the terminal 20, the terminal 30, the terminal 40, the terminal 50, and the terminal 60) and a network device 70.
  • the network device 70 is used to provide communication services for the terminal and access the core network.
  • the terminal can access the network by searching for synchronization signals, broadcast signals, etc. sent by the network device 70, so as to communicate with the network.
  • the terminal 10, the terminal 20, the terminal 30, the terminal 40, and the terminal 60 in FIG. 1 can perform uplink and downlink transmissions with the network device 70.
  • the network device 70 may send downlink signals to the terminal 10, the terminal 20, the terminal 30, the terminal 40, and the terminal 60, and may also receive the uplink signal sent by the terminal 10, the terminal 20, the terminal 30, the terminal 40, and the terminal 60.
  • the terminal 40, the terminal 50, and the terminal 60 can also be regarded as a communication system, and the terminal 60 can send downlink signals to the terminal 40 and the terminal 50, and can also receive uplink signals sent by the terminal 40 and the terminal 50.
  • embodiments of the present application may be applied to a communication system including one or more network devices, and may also be applied to a communication system including one or more terminals, which is not limited in the present application.
  • a network device can send data or control signaling to one or more terminals. Multiple network devices can also send data or control signaling to one or more terminals at the same time.
  • the embodiment of the beam in the NR protocol can be a spatial domain filter, or a spatial filter or a spatial parameter.
  • the beam used to transmit a signal can be called a transmission beam (Tx beam), can be called a spatial domain transmission filter or a spatial transmission parameter (spatial transmission parameter);
  • the beam used to receive a signal can be called To receive a beam (reception beam, Rx beam), it can be called a spatial domain receive filter or a spatial receive parameter (spatial RX parameter).
  • the transmitting beam may refer to the distribution of signal strength in different directions in space after a signal is transmitted through the antenna
  • the receiving beam may refer to the signal strength distribution of the wireless signal received from the antenna in different directions in space.
  • the beam may be a wide beam, or a narrow beam, or other types of beams.
  • the beam forming technology may be beamforming technology or other technologies.
  • the beamforming technology may specifically be a digital beamforming technology, an analog beamforming technology, or a hybrid digital/analog beamforming technology, etc.
  • Beams generally correspond to resources. For example, when performing beam measurement, network equipment uses different resources to measure different beams, and the terminal feeds back the measured resource quality, and the network equipment knows the quality of the corresponding beam. In data transmission, the beam information is also indicated by its corresponding resource. For example, the network device instructs the terminal physical downlink shared channel (PDSCH) beam information through the resources in the transmission configuration indication (transmission configuration indication, TCI) of downlink control information (downlink control information, DCI).
  • TCI transmission configuration indication
  • multiple beams having the same or similar communication characteristics are regarded as one beam.
  • One or more antenna ports can be included in one beam, which are used to transmit data channels, control channels, and sounding signals.
  • One or more antenna ports forming a beam can also be regarded as an antenna port set.
  • each beam of the network device corresponds to a resource, so the resource index can be used to uniquely identify the beam corresponding to the resource.
  • the resource index can be used to uniquely identify the beam corresponding to the resource.
  • the resource can be an uplink signal resource or a downlink signal resource.
  • Uplink signals include but are not limited to sounding reference signal (SRS) and demodulation reference signal (DMRS).
  • Downlink signals include but are not limited to: channel state information reference signal (CSI-RS), cell specific reference signal (CS-RS), UE specific reference signal (user equipment specific reference signal, US-RS), demodulation reference signal (demodulation reference signal, DMRS), and synchronization signal/physical broadcast channel block (synchronization system/physical broadcast channel block, SS/PBCH block).
  • the SS/PBCH block may be referred to as a synchronization signal block (synchronization signal block, SSB) for short.
  • a resource is a data structure, including its corresponding uplink/downlink signal related parameters, such as the type of uplink/downlink signal, the resource element that carries the uplink/downlink signal, the transmission time and period of the uplink/downlink signal , The number of ports used to send uplink/downlink signals, etc.
  • Each uplink/downlink signal resource has a unique index to identify the downlink signal resource. It is understandable that the index of the resource may also be referred to as the identifier of the resource, which is not limited in the embodiment of the present application.
  • the co-location relationship is used to indicate that multiple resources have one or more identical or similar communication features.
  • multiple resources with a co-location relationship the same or similar communication configuration can be adopted.
  • Large-scale characteristics can include: delay spread, average delay, Doppler spread, Doppler shift, average gain, receiving parameters, terminal receiving beam number, transmitting/receiving channel correlation, receiving angle of arrival, receiver antenna space Correlation, main angle of arrival (Angel-of-Arrival, AoA), average angle of arrival, expansion of AoA, etc.
  • the parameters of quasi co-location include at least one of Doppler spread, Doppler frequency shift, average delay, delay spread and spatial reception parameters.
  • the QCL relationship can be divided into four categories:'QCL-TypeA': ⁇ Doppler frequency shift, Doppler spread, average delay, delay spread ⁇ ;'QCL-TypeB': ⁇ Doppler frequency shift, multiple Puller extension ⁇ ;'QCL-TypeC': ⁇ Doppler frequency shift, average delay ⁇ ; -'QCL-TypeD': ⁇ space domain receiving parameter ⁇ .
  • Carrier aggregation can aggregate two or more component carriers (component carriers, CC) together to achieve a larger transmission bandwidth and effectively increase the uplink and downlink transmission rates.
  • CA can support in-band continuous carrier aggregation, in-band discontinuous carrier aggregation, or inter-band discontinuous carrier aggregation.
  • the component carrier may also be referred to as a carrier component (CC).
  • Bandwidth part It can be understood as a continuous frequency band.
  • the frequency band includes at least one continuous subband.
  • Each bandwidth part can correspond to a set of system parameters (numerology), including, for example, but not limited to, subbands.
  • Carrier interval cyclic prefix (CP) length, transmission time interval (TTI), number of symbols (Symbol), resource block (RB) location, time slot length, frame format, etc.
  • CP cyclic prefix
  • TTI transmission time interval
  • Symbol number of symbols
  • RB resource block
  • Different bandwidth parts can correspond to different system parameters.
  • the cell and carrier components can be replaced equivalently, because in the communication protocol, a CC is usually regarded as an independent cell. CC, bandwidth part, CC/BWP, CC and/or BWP can also be replaced equivalently, because they can all be used to describe one end of frequency domain resources.
  • Primary cell Working on the primary frequency band, the terminal equipment is using the primary cell to perform initial connection or re-establish the connection.
  • Secondary cell group For terminal devices configured with dual connectivity, a subset of serving cells that includes primary and secondary cells (primary SCG cells) and other secondary cells.
  • Primary and secondary cells For dual connectivity operations, primary and secondary cells refer to the cells that send random access when the terminal device performs synchronous reconfiguration.
  • the special cell refers to the primary cell of a master cell group (master cell group, MCG) or the primary and secondary cells of a secondary cell group; otherwise, the special cell is the primary cell.
  • Secondary cell If the terminal device is configured with the CA function, it is a cell that provides additional radio resources outside of the special cell.
  • Serving cell For terminal equipment in the RRC_CONNECTED state, if CA/double connection (DC) is not configured, there is only one serving cell, that is, the primary cell; if CA/DC is configured, the serving cell Including the combination of special cells and all auxiliary cells.
  • DC CA/double connection
  • Fig. 2 shows a schematic flowchart of a method for beam failure recovery of a secondary cell.
  • the terminal performs beam failure detection.
  • the terminal performs beam failure detection based on the secondary cell. Specifically, the terminal monitors the beam failure detection reference signal (BFD RS), and every certain period, if the link quality is judged to be lower than the threshold, a beam failure instance is recorded and sent by the physical layer of the terminal An indication to the higher layer of the terminal, such as the terminal link layer.
  • the upper layer of the terminal starts a beam failure timer and increments the beam failure counter by 1. If the upper layer of the terminal exceeds the maximum value of the beam counter count before the beam failure timer expires, it declares a beam failure.
  • the period here may be called the beam failure instance indication period. It is related to the period of BFD RS. For example, the period is equal to the larger of 2 milliseconds and the smallest of multiple BFD RS periods.
  • the BFD RS includes an RS corresponding to a beam of a physical downlink control channel (PDCCH), or an RS corresponding to a beam of a control resource set (CORESET).
  • PDCCH physical downlink control channel
  • CORESET control resource set
  • the terminal searches for a new available beam.
  • the network device may configure a candidate beam set (candidate beam RS) for the terminal in advance.
  • the terminal may select candidate beams that meet the condition from the candidate beam set (for example, the beam quality is higher than a given candidate beam quality threshold).
  • the terminal may not find an available beam.
  • step 201 and step 302 may not be limited.
  • the terminal can also search for a new available beam without failing the current beam.
  • the quality can be measured and maintained all the time, and the measurement does not need to wait until the beam fails.
  • the terminal sends a beam failure recovery request (BFRQ) to the network device.
  • BFRQ beam failure recovery request
  • the terminal if the terminal does not find a new available beam, the terminal sends a scheduling request (scheduling request, SR) to the network device to request the network device for uplink transmission resources. Since this is an SR specially configured as the BFRQ function, the base station can know that the terminal has a beam failure after receiving this SR. Therefore, the SR may also be called SR-based BFRQ, PUCCH-based BFRQ, or link recovery request (LRR).
  • SR scheduling request
  • PUCCH-based BFRQ PUCCH-based BFRQ
  • LRR link recovery request
  • the SR can be sent in the primary cell.
  • the network device schedules uplink transmission resources for the terminal.
  • the network equipment has learned that the terminal has a beam failure, but it does not yet know which cell of the terminal has the beam failure, nor does it know which beams are newly available. Therefore, the network device needs to schedule uplink transmission resources for the terminal, for example, physical uplink shared channel (PUSCH) transmission resources.
  • PUSCH physical uplink shared channel
  • the terminal can send to the network device the specific cell where the beam fails and whether a new available beam is found through the uplink transmission resources.
  • the network device can schedule uplink resources for the terminal through DCI.
  • the DCI includes a hybrid automatic repeat request (HARQ) process number field, a new data transmission indicator (NDI) field, and may also include time resources and frequency resources that can be used for PUSCH transmission. And it can also include the antenna port of the PUSCH, modulation and coding methods, etc.
  • HARQ hybrid automatic repeat request
  • NDI new data transmission indicator
  • the terminal sends an uplink media access control control element (MAC CE) to the network device through the PUSCH to notify the network device of the cell information of the beam failure and the information of the newly available beam.
  • MAC CE uplink media access control control element
  • the new available beam information may indicate that no new available beam is found.
  • the terminal sending the MAC CE may be performed in the primary cell.
  • the terminal may not perform steps 303 and 304 above. That is, the terminal directly uses the uplink transmission resource to send the MAC CE to the network device.
  • the network device sends a response message of the MAC CE to the terminal, and the response message of the MAC CE is used to confirm that the network device correctly receives the MAC CE.
  • the response message of the MAC CE may be an independent message, or it may reuse the existing DCI, that is, the DCI may also have the function of the response message of the MAC CE.
  • the HARQ process ID included in the DCI is the same as the HARQ process ID of the DCI in step 204, but the new data indicator (NDI) field is flipped (that is, different).
  • the DCI of this structure can also be used to indicate that the network device successfully receives the PUSCH.
  • the terminal receives beam related information sent from the network device.
  • the network device may also reconfigure beam information for the terminal.
  • the network device uses the new available beam to send the physical downlink control channel by default. PDCCH), or the terminal sends the uplink control channel (physical uplink control channel, PUCCH) by default using the new available sending beam of the network device and the corresponding sending beam corresponding to the receiving beam of the terminal.
  • PDCCH physical downlink control channel
  • PUCCH physical uplink control channel
  • the terminal cannot communicate with the network device.
  • the terminal does not find a new usable beam in step 302, and before step 307, the terminal cannot communicate with the network device on the secondary cell. Therefore, when the current communication beam between the terminal and the network device fails and no new beam is found, how the terminal communicates with the network device needs to be solved urgently.
  • FIG. 3 shows a schematic flowchart of a method for beam failure recovery according to an embodiment of the present application.
  • the terminal receives a trigger message when the beam of the first transmission beam between the network device and the network device fails and the second transmission beam is not found, and the second transmission beam is a transmission beam that the network device can communicate with the terminal. .
  • the network device sends the trigger message.
  • the network device may use the first transmission beam to communicate with the terminal.
  • the beam failure of the first transmission beam between the terminal and the network device can be understood as the terminal detecting the reference signal sent by the network device using the first transmission beam. If the quality of the reference signal is lower than the preset threshold, the terminal considers the first transmission beam A beam of the transmission beam fails. If the first transmission beam of the communication between the terminal and the network device fails and the second transmission beam is not found in the first transmission beam set, the terminal detects and receives the trigger message sent by the network device. Wherein, the second transmission beam is one or more transmission beams that the network device can use to communicate with the terminal. The trigger message can be used to trigger the terminal to perform beam selection again.
  • the first transmission beam set includes one or more transmission beams of the network device.
  • the first transmission beam set may be directly configured by the network device, may also be indirectly configured, or may be agreed upon by a protocol.
  • the network device may directly configure a beam list, and the beam list includes one or more transmission beams of the network device.
  • the network device indirectly configures the first transmission beam set.
  • the terminal automatically configures the synchronization signal/physical broadcast channel (physical broadcast channel, SSB) of the cell and/or the periodically transmitted channel state indication reference signal (channel state information).
  • the reference signal (CSI-RS) corresponding to the transmission beam is used as the transmission beam in the first beam set.
  • the "beam” in the embodiment of the present application can be understood as a “reference signal”, or that the "beam” and the “reference signal” have a mapping relationship.
  • the "beam list” can be a “reference signal list (candidate beam RS SCell list)", and each reference signal in the list can be an SSB or a CSI-RS.
  • the "beam set” corresponds to the "reference signal set” (for example, the candidate beam set in step 202).
  • the first transmission beam may also belong to a beam list.
  • the network device may directly configure the beam list to which the first transmission beam belongs, and the beam list includes one or more transmission beams of the network device.
  • the network device may also indirectly configure the beam set to which the first transmit beam belongs.
  • the terminal may determine multiple transmit beams having a QCL relationship as the beam set to which the first transmit beam belongs. More specifically, the terminal automatically detects reference signals of type QCL typeD in the PDCCH CORESET TCI state, and determines multiple reference signals of QCL typeD as the beam set to which the first transmission beam belongs.
  • the first transmission beam may be in the first transmission beam set or not in the first transmission beam set, which is not limited in the embodiment of the present application.
  • the operation of the terminal may be the same as 201-204.
  • the terminal may also send capability information to the network device.
  • the capability information is used to indicate the maximum number of secondary cells that the terminal supports the beam failure recovery function (that is, the BFR process), or the maximum number of secondary cells supported by the terminal for new
  • the number of reference signals may be for one cell or for all cells, which is not limited in this application.
  • the terminal may be the first transmission beam between the secondary cell and the network device, and the beam of the first transmission beam failed, and the second transmission beam is not found; or in step 301, the terminal may also be connected to the network on the primary cell. The first transmission beam between the devices failed, and the second transmission beam was not found.
  • the following embodiments take the secondary cell as an example for description, but the application is not limited to this.
  • the failure of the first transmission beam between the terminal and the network device on the secondary cell may be the failure of one of the transmission beams between the terminal on the secondary cell and the network device, or the failure of the terminal on the secondary cell and the network device. All transmission beams between devices failed. That is, a certain transmission beam that the network device communicates with the terminal on the secondary cell may be referred to as the first transmission beam. In other words, if all the transmission beams of the network equipment and the terminal communication on the secondary cell fail, it is considered that the communication beams of the network equipment and the terminal on the secondary cell have failed. In this case, the first transmission beam failure refers to all the transmission beams. The beam failed. For the convenience of description, the following embodiments use the first transmission beam as any transmission beam for communication between the network device and the terminal, but this application does not limit this.
  • the terminal may send a MAC CE to the network device, and the MAC CE is used to indicate After the failure of the first transmission beam between the terminal and the network device, the second transmission beam is not found.
  • the network device After receiving the MAC CE, the network device sends a response message of the MAC CE to the terminal.
  • the response message of the MAC CE is used to indicate that the network device has received the MAC CE.
  • step 301 may specifically be that the terminal receives the trigger message after receiving the response message of the MAC CE.
  • the terminal sends a MAC CE to the network device, and the MAC CE indicates that the current beam of the first transmission beam fails, and the terminal does not find a new available beam (that is, the second transmission beam).
  • the network device feeds back the response message of the MAC CE to the terminal (for example, the response message of the MAC CE is an acknowledgement message (acknowledgement, ACK)).
  • the terminal receives the trigger message sent by the network device.
  • the trigger message can be sent separately, which improves the flexibility of sending the trigger message.
  • the HARQ process ID included in the DCI is the same as the HARQ process ID of the DCI scheduling the MAC CE transmission (that is, the DCI in step 204), but is new
  • the data indicator (new data indicator, NDI) field is flipped.
  • the terminal can reuse the existing DCI format for scheduling PUSCH transmission, such as the existing DCI format 0_0, DCI format 0_1, DCI format 0_2, etc. [quote existing standard TS 38.211 v16.0.0].
  • the DCI format 0_1 includes at least the following fields, and the functions of the fields are as follows:
  • the DCI format used as the response message of the MAC CE is the same as the DCI scheduled for transmission of the MAC CE.
  • the trigger message may be a DCI message
  • the format of the DCI message may be the same as the DCI format of step 206 in the embodiment shown in FIG. 2 (for example, the DCI format is 0_1), or may be different. There is no restriction on this.
  • receiving the trigger message may specifically be that the terminal receives the trigger message within a preset time period threshold.
  • the terminal after receiving the MAC CE response message, if the terminal receives the trigger message within the preset time period threshold, it performs subsequent operations according to the trigger message; if the terminal receives the trigger message beyond the preset time period threshold , It can be considered that the secondary cell has failed, and the trigger message is invalid, that is, the subsequent operation indicated by the trigger message is not performed.
  • the starting time of the preset time period threshold may be the time when the terminal receives the response message of the MAC CE.
  • the length of the preset time period threshold may be a time length related to the length of the beam failure recovery timer (configured by high-level signaling beamfailurerecoverytimer), such as 10 milliseconds, 20 milliseconds, 40 milliseconds, 80 milliseconds, 200 milliseconds, and so on.
  • step 301 the terminal sends a MAC CE to the network device.
  • step 301 may specifically be that the terminal receives the response message of the MAC CE and the response message of the MAC CE when the beam of the first transmission beam between the terminal and the network device fails and the second transmission beam is not found. Include the trigger message.
  • the response message of the MAC CE may carry the trigger message.
  • the trigger message can reuse the relevant fields in the MAC CE response message, such as the CSI-request field in DCI format 0_1 or DCI format 0_2, thereby reducing the time waiting for a trigger message and speeding up finding new ones that are available The time of the beam.
  • the terminal when it receives the MAC CE response message in the above two examples, it may stop detecting the reference signal corresponding to the first transmission beam. For example, the terminal stops detecting the PDCCH corresponding to the first transmission beam in the secondary cell. Or the terminal stops detecting the originally configured BFD RS or the originally configured QCL typed RS in the PDCCH CORESET TCI state in the secondary cell.
  • the terminal performs beam recovery by using a new beam for communication. Therefore, when the terminal receives the MAC CE response message and determines that the beam of the first transmission beam fails, it can stop detecting the reference signal corresponding to the first transmission beam, avoiding the continuous detection of the reference signal corresponding to the first transmission beam. The power consumption is wasted, that is, the embodiment of the present application saves the power consumption of the terminal.
  • the terminal may start a beam failure prohibit timer (BFD prohibit timer), and the terminal may not perform beam failure detection within the effective time.
  • BFD prohibit timer beam failure prohibit timer
  • the terminal when it receives the MAC CE response message in the above two examples, it may stop sending indication information to the upper layer, where the indication information is used to indicate that the beam of the first transmission beam fails.
  • the terminal when the terminal detects the beam failure of the first transmission beam, it repeatedly sends indication information to the upper layer, that is, continuously informs the first transmission beam of the beam failure, so that the upper layer continuously initiates MAC CE transmission. .
  • the terminal since the terminal has successfully fed back the beam failure information to the network device, there is no need to perform beam failure detection for the first transmission beam, thereby saving the terminal's power. Consumption overhead.
  • the terminal when it receives the MAC CE response message in the above two examples, it may stop or not start the timing of the beam failure timer.
  • the terminal in the embodiment of the present application may not stop the timing of the beam failure timer or not start the timing of the beam failure timer. In this way, the terminal can wait for beam recovery without performing follow-up operations after beam failure, for example, the terminal reconnects to the network device, which saves the power consumption of the terminal.
  • the terminal when the terminal receives the MAC CE response message in the above two examples, it may not stop the timing of the beam failure recovery timer.
  • the terminal may not stop the timing of the beam failure recovery timer, which helps the terminal record the duration of beam failure recovery and helps improve the performance of subsequent operations of the terminal.
  • the terminal receives multiple reference signals from the network device according to the trigger message, where the multiple reference signals are used to determine the second transmission beam.
  • the network device and the terminal may pre-arrange or agree on the format of the trigger message.
  • the terminal can perform beam training again.
  • the terminal may adjust the current state to the state of receiving the reference signal.
  • the terminal may receive multiple reference signals sent from the network device, where the reference signal and the transmission beam may have an association relationship or a mapping relationship, so that the terminal can determine a second transmission beam capable of communicating with the terminal according to the multiple reference signals.
  • the terminal does not need to reconnect to the network device to achieve beam recovery, and the delay of beam recovery is relatively short compared to reconnecting to the network device. That is, the embodiment of the present application can help reduce beam failure recovery. Time delay.
  • the trigger message in the agreed format may be the DCI in the agreed format.
  • the length of the CSI-request in DCI format 0_1 or DCI format 0_2 is N bits, and the value of N depends on the configuration and/or activation of the network equipment through high-level signaling such as RRC signaling and/or MAC CE signaling.
  • the number of periodic CSI trigger states (CSI-AperiodicTriggerState).
  • Each aperiodic CSI trigger state is associated with one or more report settings (ReportConfig), and each report setting corresponds to one or more resource settings (ResourceConfig).
  • Each resource set includes a resource set list (ResourceSetList), where the resource set list includes one or more resource sets.
  • Each resource collection includes one or more resources.
  • the resource can be a CSI-RS resource or an SSB resource.
  • the network equipment can trigger the terminal to detect the L1-reference signal received power (RSRP) or L1-signal to interference plus noise ratio (SINR) of SSB and/or CSI-RS in the secondary cell. ) (one candidate solution is that gNB could trigger aperiodic L1-RSRP measurement and report for the failed SCell).
  • the network device can indicate a specific aperiodic CSI trigger state to the terminal through the trigger message (the CSI request field in the DCI), and the reported amount in the associated report setting is L1-RSRP.
  • the multiple reference signals may correspond to multiple transmission beams of the network device one-to-one, or one reference signal may correspond to multiple transmission beams, or multiple reference signals correspond to one transmission beam. This application does not deal with this. limited.
  • the transmission beam set may also be referred to as a "reference signal set”.
  • the multiple reference signals correspond to transmission beams in a second transmission beam set, and the transmission beams included in the second transmission beam set may be partially or completely different from the transmission beams in the first transmission beam set.
  • the network device may configure a new available transmission beam set for the terminal by sending the beam set. If the terminal does not find the second transmission beam in the first transmission beam set, the network device may also configure the second transmission beam set for the terminal. Since there are beams that are not included in the first transmission beam set in the second transmission beam set, the terminal may find the second transmission beam from the second transmission beam set.
  • the terminal may determine the second transmission beam according to received signal powers of multiple reference signals.
  • the terminal may determine a transmission beam corresponding to a reference signal greater than a preset received signal power threshold as the second transmission beam. If there are multiple reference signals greater than the preset received signal power threshold, the transmission beam corresponding to the reference signal with the maximum received signal power is determined as the second transmission beam.
  • the terminal may directly determine the transmission beam with the highest received signal power as the second transmission beam.
  • the terminal sends a measurement report to the network device, where the measurement report is used to indicate the information of the second transmission beam.
  • the network device uses the second transmitting beam to communicate with the terminal.
  • the network device can immediately use the second transmission beam to communicate with the terminal, or first confirm to the terminal that the measurement report has been received correctly, and then communicate with the terminal through the second transmission beam. Communication, this application does not limit this.
  • the terminal can immediately use the transceiver beam of the terminal corresponding to the second transmission beam to communicate with the network device, or it can pass the second transmission beam after the network device confirms to the terminal that the measurement report has been correctly received.
  • the transmitting and receiving beams of the terminal corresponding to the transmitting beam communicate with the network device, which is not limited in this application.
  • the network device communicates with the terminal through the second transmit beam, specifically, the network device uses the second transmit beam to transmit PDCCH, PDSCH, CSI-RS to the terminal, or the network device uses the receive beam corresponding to the second transmit beam to receive from the terminal.
  • PUCCH, PUSCH, SRS, PRACH this application does not limit this.
  • the terminal uses the transceiver beam of the terminal corresponding to the second transmit beam to communicate with the network device, specifically, the terminal may use the receive beam of the terminal corresponding to the second transmit beam to receive PDCCH, PDSCH, CSI-RS, or the terminal uses the second transmit beam
  • the transmission beam of the corresponding terminal transmits PUCCH, PUSCH, SRS, PRACH, etc.
  • the receiving beam of the terminal corresponding to the second sending beam, and the sending beam corresponding to the receiving beam of the terminal can be understood as the sending beam of the terminal corresponding to the second sending beam.
  • the terminal can use the terminal receiving and sending beam corresponding to the second sending beam to communicate with the network. During this period of time, the terminal must complete the triggered beam measurement and report. Therefore, the required time length is at least Z3, which is the terminal CSI processing time required by the protocol. This time length is related to the terminal capabilities and/or subcarrier spacing, for example, 44 symbols, 96 symbols, 336 symbols, etc.
  • this time length needs to be increased, for example, Z3+T, where T is processed by the base station
  • T is processed by the base station
  • the capability is related to the subcarrier spacing.
  • T can be 28 symbols or 56 symbols.
  • the terminal if the terminal does not find a new available beam, the terminal will receive a section after the DCI with the same DCI as the DCI scheduled for the MAC CE transmission but with the new data indicator (NDI) field flipped. After a period of time (the length of this period is 28 symbols and the maximum value of Z3, where Z3 is the terminal CSI calculation time specified in TS 38.214), the terminal uses the beam reported by the most recent L1-RSRP when receiving the PDCCH in the SCell.
  • NDI new data indicator
  • the UE receives PDCCH on the least one SCell with same antenna port quad-collocation parameters as the first port of the corresponding RS associated with the corresponding index triggered by the same PDCCH.
  • the terminal may stop the timing of the beam failure recovery timer, and consider that the beam failure recovery is successful.
  • the terminal may stop the beam failure prohibition detection timer.
  • the methods and operations implemented by the terminal can also be implemented by components (such as chips or circuits) that can be used in the terminal, and the methods and operations implemented by the network device can also be implemented by the terminal.
  • the components (such as chips or circuits) of network equipment are implemented.
  • each network element such as a transmitting end device or a receiving end device, includes hardware structures and/or software modules corresponding to each function in order to realize the above-mentioned functions.
  • the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software-driven hardware depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.
  • the embodiments of the present application can divide the transmitting end device or the receiving end device into functional modules according to the foregoing method examples.
  • each functional module can be divided corresponding to each function, or two or more functions can be integrated into one processing module. middle.
  • the above-mentioned integrated modules can be implemented either in the form of hardware or in the form of software functional modules. It should be noted that the division of modules in the embodiments of the present application is illustrative, and is only a logical function division, and there may be other division methods in actual implementation. The following is an example of using the corresponding functional modules to divide each functional module.
  • the size of the sequence number of the above-mentioned processes does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic, and should not correspond to the embodiments of the present application.
  • the implementation process constitutes any limitation.
  • FIG. 4 shows a schematic block diagram of an apparatus 4800 for beam failure recovery according to an embodiment of the present application.
  • the device 400 may correspond to each terminal or chip in the terminal shown in FIG. 1, and the terminal or chip in the terminal in the embodiment shown in FIG. Any function of the terminal.
  • the device 400 includes a processing module 410 and a transceiver module 420.
  • the transceiver module 420 may specifically include a receiving module and a sending module.
  • the processing module 410 is configured to receive a trigger message through the transceiver module 420 when the beam of the first transmission beam with the network device fails and the second transmission beam is not found, and the second transmission beam is the network The transmission beam that the device can communicate with the terminal;
  • the processing module 410 is further configured to receive multiple reference signals from the network device through the transceiver module 420 according to the trigger message, and the multiple reference signals are used to determine the second transmission beam.
  • the transceiver module 420 is further configured to send a media intervention control control unit MAC CE, where the MAC CE is used to indicate that the beam of the first transmission beam between the terminal and the network device fails, and the second transmission beam is not found. Transmit beam; the transceiver module 420 is also used to receive the MAC CE response message, the MAC CE response message is used to indicate that the network device receives the MAC CE; wherein, the processing module 410 is specifically used to: After the MAC CE response message, the trigger message is received through the transceiver module 420.
  • MAC CE media intervention control control unit
  • the transceiver module 420 is further configured to send a MAC CE, where the MAC CE is used to indicate that the terminal has failed the beam of the first transmission beam between the terminal and the network device, and the second transmission beam is not found;
  • the processing module 410 is specifically configured to receive the MAC CE response message through the transceiver module 420 when the beam of the first transmission beam with the network device fails and the second transmission beam is not found.
  • the response message of the MAC CE is used to indicate that the network device has received the MAC CE, and the response message of the MAC CE includes the trigger message.
  • the processing module 410 is further configured to stop detecting the reference signal corresponding to the first transmission beam when the response message of the MAC CE is received.
  • the processing module 410 is further configured to stop sending indication information to the upper layer when the response message of the MAC CE is received, and the indication information is used to indicate that the beam of the first transmission beam fails.
  • the processing module 410 is further configured to stop or not start the timing of the beam failure timer when the response message of the MAC CE is received.
  • the transceiver module 420 is further configured to communicate with the network device that uses the second transmitting beam.
  • the terminal detects and receives the trigger message sent by the network device. After the terminal receives the trigger message, it can perform beam training again, that is, the terminal can receive multiple reference signals sent from the network device, so that the terminal can determine the second transmission that can communicate with the terminal based on the multiple reference signals. Beam. In other words, the terminal does not need to reconnect to the network device to achieve beam recovery, and the delay of beam recovery is relatively short compared to reconnecting to the network device. That is, the embodiment of the present application can help reduce beam failure recovery. Time delay.
  • transceiver module 420 and processing module 410 For a more detailed description of the foregoing transceiver module 420 and processing module 410, reference may be made to the relevant description in the foregoing method embodiment, which is not described herein again.
  • FIG. 5 shows a communication device 500 provided by an embodiment of the present application, and the device 500 may be the terminal described in FIG. 3.
  • the device can adopt the hardware architecture shown in FIG. 5.
  • the device may include a processor 510 and a transceiver 530.
  • the device may also include a memory 540.
  • the processor 510, the transceiver 530, and the memory 540 communicate with each other through an internal connection path.
  • the related functions implemented by the processing module 410 in FIG. 4 may be implemented by the processor 510, and the related functions implemented by the transceiver module 420 may be implemented by the processor 510 controlling the transceiver 530.
  • the processor 510 may be a general-purpose central processing unit (central processing unit, CPU), a microprocessor, an application-specific integrated circuit (ASIC), a dedicated processor, or one or more It is an integrated circuit that implements the technical solutions of the embodiments of the present application.
  • a processor may refer to one or more devices, circuits, and/or processing cores for processing data (for example, computer program instructions).
  • it can be a baseband processor or a central processing unit.
  • the baseband processor can be used to process communication protocols and communication data
  • the central processor can be used to control communication devices (such as base stations, terminals, or chips), execute software programs, and process data in the software programs.
  • the processor 510 may include one or more processors, for example, include one or more central processing units (central processing unit, CPU).
  • CPU central processing unit
  • the CPU may be a single processor.
  • the core CPU can also be a multi-core CPU.
  • the transceiver 530 is used to send and receive data and/or signals, and to receive data and/or signals.
  • the transceiver may include a transmitter and a receiver, the transmitter is used to send data and/or signals, and the receiver is used to receive data and/or signals.
  • the memory 540 includes, but is not limited to, random access memory (RAM), read-only memory (ROM), erasable programmable memory (erasable read only memory, EPROM), and read-only memory.
  • RAM random access memory
  • ROM read-only memory
  • EPROM erasable read only memory
  • read-only memory erasable read only memory
  • a compact disc read-only memory, CD-ROM
  • the memory 540 is used to store related instructions and data.
  • the memory 540 is used to store program codes and data of the terminal, and may be a separate device or integrated in the processor 510.
  • the processor 510 is configured to control the transceiver to perform information transmission with the terminal.
  • the processor 510 is configured to control the transceiver to perform information transmission with the terminal.
  • the transceiver to perform information transmission with the terminal.
  • the apparatus 500 may further include an output device and an input device.
  • the output device communicates with the processor 510 and can display information in a variety of ways.
  • the output device may be a liquid crystal display (LCD), a light emitting diode (LED) display device, a cathode ray tube (CRT) display device, or a projector, etc.
  • the input device communicates with the processor 510 and can receive user input in a variety of ways.
  • the input device can be a mouse, a keyboard, a touch screen device, or a sensor device.
  • FIG. 5 only shows a simplified design of the communication device.
  • the device may also contain other necessary components, including but not limited to any number of transceivers, processors, controllers, memories, etc., and all terminals that can implement this application are within the protection scope of this application. within.
  • the device 500 may be a chip, for example, a communication chip that can be used in a terminal to implement related functions of the processor 510 in the terminal.
  • the chip can be a field programmable gate array, a dedicated integrated chip, a system chip, a central processing unit, a network processor, a digital signal processing circuit, a microcontroller, and a programmable controller or other integrated chips for realizing related functions.
  • the chip may optionally include one or more memories for storing program codes. When the codes are executed, the processor realizes corresponding functions.
  • the embodiment of the present application also provides a device, which may be a terminal or a circuit.
  • the device can be used to perform the actions performed by the terminal in the foregoing method embodiments.
  • FIG. 6 shows a schematic block diagram of an apparatus 600 for transmitting a random access preamble according to an embodiment of the present application.
  • the apparatus 600 may correspond to the network device or the chip in the network device shown in FIG. 1, or the network device or the chip in the network device in the embodiment shown in FIG. Any function.
  • the device 600 includes a processing module 610 and a transceiver module 620.
  • the processing module 610 is configured to send a trigger message to the terminal through the transceiver module when the beam of the first transmission beam with the terminal fails and the terminal does not find the second transmission beam, and the trigger message is used to trigger
  • the terminal detects the reference signal, where the second transmission beam is a transmission beam that the network device can communicate with the terminal;
  • the transceiver module 620 is further configured to send multiple reference signals to the terminal, and the multiple reference signals are used to determine the second transmission beam.
  • the transceiver module 620 is further configured to receive a media intervention control control unit MAC CE from the terminal, where the MAC CE is used to indicate that the beam of the first transmission beam between the terminal and the network device has failed, and is not The second transmission beam is found; the transceiver module 620 is further configured to send a response message of the MAC CE to the terminal, and the response message of the MAC CE is used to indicate that the network device receives the MAC CE.
  • a media intervention control control unit MAC CE from the terminal, where the MAC CE is used to indicate that the beam of the first transmission beam between the terminal and the network device has failed, and is not The second transmission beam is found
  • the transceiver module 620 is further configured to send a response message of the MAC CE to the terminal, and the response message of the MAC CE is used to indicate that the network device receives the MAC CE.
  • the transceiver module 620 is further configured to receive a MAC CE from the terminal, where the MAC CE is used to indicate that the beam of the first transmission beam between the terminal and the network device fails, and the second transmission is not found Beam; wherein, the processing module 610 is specifically configured to: after receiving the MAC CE, send the MAC CE response message to the terminal through the transceiver module 620, and the MAC CE response message is used to indicate that the network device receives The MAC CE, and the response message of the MAC CE includes the trigger message.
  • the processing module 610 is further configured to stop detecting the reference signal corresponding to the first transmission beam when the response message of the MAC CE is received.
  • the processing module 610 is further configured to stop sending indication information to the upper layer when the response message of the MAC CE is received, and the indication information is used to indicate that the beam of the first transmission beam fails.
  • the processing module 610 is further configured to stop or not start the timing of the beam failure timer when the response message of the MAC CE is received.
  • the transceiver module 620 is further configured to communicate with the network device using the second transmitting beam.
  • the terminal detects and receives the trigger message sent by the network device, so that the terminal After receiving the trigger message, beam training is performed again. For example, the terminal may adjust the current state to the state of receiving the reference signal.
  • the terminal may receive multiple reference signals sent from the network device, where the reference signal and the transmission beam may have an association relationship or a mapping relationship, so that the terminal can determine a second transmission beam capable of communicating with the terminal according to the multiple reference signals.
  • the terminal does not need to reconnect to the network device to achieve beam recovery, and the delay of beam recovery is relatively short compared to reconnecting to the network device. That is, the embodiment of the present application can help reduce beam failure recovery. Time delay.
  • transceiver module 610 and processing module 620, reference may be made to the relevant description in the foregoing method embodiment, which is not described here.
  • FIG. 7 shows a communication device 700 provided by an embodiment of the present application.
  • the device 700 may be the network device described in FIG. 3.
  • the device can adopt the hardware architecture shown in FIG. 7.
  • the device may include a processor 710 and a transceiver 720.
  • the device may also include a memory 730.
  • the processor 710, the transceiver 720, and the memory 730 communicate with each other through an internal connection path.
  • the related functions implemented by the processing module 610 in FIG. 6 may be implemented by the processor 710, and the related functions implemented by the transceiver module 620 may be implemented by the processor 710 controlling the transceiver 720.
  • the processor 710 may be a general-purpose central processing unit (central processing unit, CPU), a microprocessor, an application-specific integrated circuit (ASIC), a dedicated processor, or one or more It is an integrated circuit that implements the technical solutions of the embodiments of the present application.
  • a processor may refer to one or more devices, circuits, and/or processing cores for processing data (for example, computer program instructions).
  • it can be a baseband processor or a central processing unit.
  • the baseband processor can be used to process communication protocols and communication data
  • the central processor can be used to control communication devices (such as base stations, terminals, or chips), execute software programs, and process data in the software programs.
  • the processor 710 may include one or more processors, for example, include one or more central processing units (central processing unit, CPU).
  • CPU central processing unit
  • the CPU may be a single processor.
  • the core CPU can also be a multi-core CPU.
  • the transceiver 720 is used to send and receive data and/or signals, and to receive data and/or signals.
  • the transceiver may include a transmitter and a receiver, the transmitter is used to send data and/or signals, and the receiver is used to receive data and/or signals.
  • the memory 730 includes, but is not limited to, random access memory (RAM), read-only memory (ROM), erasable programmable memory (erasable read only memory, EPROM), and read-only memory.
  • RAM random access memory
  • ROM read-only memory
  • EPROM erasable read only memory
  • read-only memory erasable read only memory
  • CD-ROM compact disc
  • the memory 730 is used to store program codes and data of the network device, and may be a separate device or integrated in the processor 710.
  • the processor 710 is configured to control the transceiver to perform information transmission with the terminal.
  • the processor 710 is configured to control the transceiver to perform information transmission with the terminal.
  • the apparatus 700 may further include an output device and an input device.
  • the output device communicates with the processor 710 and can display information in a variety of ways.
  • the output device can be a liquid crystal display (LCD), a light emitting diode (LED) display device, a cathode ray tube (CRT) display device, or a projector, etc.
  • the input device communicates with the processor 710 and can receive user input in a variety of ways.
  • the input device can be a mouse, a keyboard, a touch screen device, or a sensor device.
  • FIG. 7 only shows a simplified design of the communication device.
  • the device may also contain other necessary components, including but not limited to any number of transceivers, processors, controllers, memories, etc., and all network devices that can implement this application are protected by this application. Within range.
  • the apparatus 700 may be a chip, for example, a communication chip that can be used in a network device, and is used to implement related functions of the processor 710 in the network device.
  • the chip can be a field programmable gate array, a dedicated integrated chip, a system chip, a central processing unit, a network processor, a digital signal processing circuit, a microcontroller, and a programmable controller or other integrated chips for realizing related functions.
  • the chip may optionally include one or more memories for storing program codes. When the codes are executed, the processor realizes corresponding functions.
  • the embodiment of the present application also provides a device, which may be a network device or a circuit.
  • the device can be used to perform the actions performed by the network device in the foregoing method embodiments.
  • FIG. 8 shows a simplified schematic diagram of the structure of the terminal. It is easy to understand and easy to illustrate.
  • the terminal uses a mobile phone as an example.
  • the terminal includes a processor, a memory, a radio frequency circuit, an antenna, and an input and output device.
  • the processor is mainly used to process the communication protocol and communication data, and to control the terminal, execute the software program, and process the data of the software program.
  • the memory is mainly used to store software programs and data.
  • the radio frequency circuit is mainly used for the conversion of baseband signals and radio frequency signals and the processing of radio frequency signals.
  • the antenna is mainly used to send and receive radio frequency signals in the form of electromagnetic waves.
  • Input and output devices such as touch screens, display screens, keyboards, etc., are mainly used to receive data input by users and output data to users. It should be noted that some types of terminals may not have input and output devices.
  • the processor When data needs to be sent, the processor performs baseband processing on the data to be sent, and then outputs the baseband signal to the radio frequency circuit.
  • the radio frequency circuit performs radio frequency processing on the baseband signal and sends the radio frequency signal to the outside in the form of electromagnetic waves through the antenna.
  • the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, and the processor converts the baseband signal into data and processes the data.
  • only one memory and processor are shown in FIG. 8. In actual end products, there may be one or more processors and one or more memories.
  • the memory may also be referred to as a storage medium or storage device.
  • the memory may be set independently of the processor, or may be integrated with the processor, which is not limited in the embodiment of the present application.
  • the antenna and radio frequency circuit with the transceiver function may be regarded as the transceiver unit of the terminal, and the processor with the processing function may be regarded as the processing unit of the terminal.
  • the terminal includes a transceiver unit 810 and a processing unit 820.
  • the transceiving unit may also be referred to as a transceiver, a transceiver, a transceiving device, and so on.
  • the processing unit may also be called a processor, a processing board, a processing module, a processing device, and so on.
  • the device for implementing the receiving function in the transceiving unit 810 can be regarded as the receiving unit, and the device for implementing the sending function in the transceiving unit 810 can be regarded as the sending unit, that is, the transceiving unit 810 includes a receiving unit and a sending unit.
  • the transceiver unit may sometimes be referred to as a transceiver, a transceiver, or a transceiver circuit.
  • the receiving unit may sometimes be called a receiver, a receiver, or a receiving circuit.
  • the transmitting unit may sometimes be called a transmitter, a transmitter, or a transmitting circuit.
  • transceiving unit 810 is configured to perform the sending and receiving operations on the terminal side in the foregoing method embodiment
  • processing unit 820 is configured to perform other operations on the terminal in addition to the transceiving operation in the foregoing method embodiment.
  • the processing unit 820 is configured to execute the processing steps on the terminal side in FIG. 3.
  • the transceiving unit 810 is configured to perform the transceiving operations in steps 301 and 302 in FIG. 3, and/or the transceiving unit 810 is further configured to perform other transceiving steps on the terminal side in the embodiment of the present application.
  • the chip When the device is a chip, the chip includes a transceiver unit and a processing unit.
  • the transceiver unit may be an input/output circuit or a communication interface;
  • the processing unit is a processor, microprocessor, or integrated circuit integrated on the chip.
  • the device shown in FIG. 9 can also be referred to.
  • the device can perform functions similar to the processor 510 in FIG. 5.
  • the device includes a processor 901, a data sending processor 903, and a data receiving processor 905.
  • the processing module 410 in the embodiment shown in FIG. 4 may be the processor 901 in FIG. 9 and completes corresponding functions.
  • the transceiving module 420 in the embodiment shown in FIG. 4 may be the sending data processor 903 and the receiving data processor 905 in FIG. 9.
  • the channel encoder and the channel decoder are shown in FIG. 9, it can be understood that these modules do not constitute a restrictive description of this embodiment, and are merely illustrative.
  • the processing device 1000 includes modules such as a modulation subsystem, a central processing subsystem, and a peripheral subsystem.
  • the communication device in this embodiment can be used as the modulation subsystem therein.
  • the modulation subsystem may include a processor 1003 and an interface 1004.
  • the processor 1003 completes the function of the aforementioned processing module 410
  • the interface 1004 completes the function of the aforementioned transceiver module 420.
  • the modulation subsystem includes a memory 1006, a processor 1003, and a program stored in the memory and running on the processor, and the processor implements the method described in the embodiment when the program is executed.
  • the memory 1006 can be non-volatile or volatile, and its location can be located inside the modulation subsystem or in the processing device 1000, as long as the memory 1006 can be connected to the The processor 1003 is fine.
  • the network device may be as shown in FIG. 11, for example, the device 110 is a base station.
  • the base station can be applied to the system shown in FIG. 1 to perform the functions of the network device in the foregoing method embodiment.
  • the base station 110 may include one or more DU 1101 and one or more CU 1102. CU1102 can communicate with the next-generation core network (NG core, NC).
  • the DU 1101 may include at least one antenna 11011, at least one radio frequency unit 11011, at least one processor 11013, and at least one memory 11014.
  • the DU 1101 part is mainly used for the transmission and reception of radio frequency signals, the conversion of radio frequency signals and baseband signals, and part of baseband processing.
  • the CU1102 may include at least one processor 11022 and at least one memory 11021.
  • CU1102 and DU1101 can communicate through interfaces, where the control plane interface can be Fs-C, such as F1-C, and the user plane interface can be Fs-U, such as F1-U.
  • the control plane interface can be Fs-C, such as F1-C
  • the user plane interface can be Fs-U, such as F1-U.
  • the CU 1102 part is mainly used to perform baseband processing, control the base station, and so on.
  • the DU 1101 and the CU1102 may be physically set together, or may be physically separated, that is, a distributed base station.
  • the CU 1102 is the control center of the base station, which may also be referred to as a processing unit, and is mainly used to complete the baseband processing function.
  • the CU 1102 may be used to control the base station to execute the operation procedure of the network device in the foregoing method embodiment.
  • the baseband processing on the CU and DU can be divided according to the protocol layer of the wireless network, for example, the packet data convergence protocol (PDCP) layer and the functions of the above protocol layers are set in the CU, the protocol layer below PDCP, For example, functions such as the radio link control (RLC) layer and the medium access control (MAC) layer are set in the DU.
  • CU implements radio resource control (radio resource control, RRC), packet data convergence protocol (packet data convergence protocol, PDCP) layer functions
  • DU implements radio link control (radio link control, RLC), MAC and physical functions.
  • the function of the (physical, PHY) layer is the packet data convergence protocol (PDCP) layer and the functions of the above protocol layers are set in the CU, the protocol layer below PDCP.
  • functions such as the radio link control (RLC) layer and the medium access control (MAC) layer are set in the DU.
  • RRC radio resource control
  • packet data convergence protocol packet data convergence protocol
  • MAC medium access control
  • the base station 110 may include one or more radio frequency units (RU), one or more DUs, and one or more CUs.
  • the DU may include at least one processor 11013 and at least one memory 11014
  • the RU may include at least one antenna 11011 and at least one radio frequency unit 11011
  • the CU may include at least one processor 11022 and at least one memory 11021.
  • the processor 11013 is configured to execute the processing steps on the network device side in FIG. 3.
  • the radio frequency unit 11011 is used to perform the receiving and sending operations in steps 301 and 302 in FIG. 3.
  • the CU1102 may be composed of one or more single boards, and multiple single boards may jointly support a wireless access network (such as a 5G network) with a single access indication, or may respectively support wireless access networks of different access standards.
  • Access network such as LTE network, 5G network or other network.
  • the memory 11021 and the processor 11022 may serve one or more boards. In other words, the memory and the processor can be set separately on each board. It can also be that multiple boards share the same memory and processor. In addition, necessary circuits can be provided on each board.
  • the DU1101 can be composed of one or more single boards.
  • Multiple single boards can jointly support a wireless access network with a single access indication (such as a 5G network), and can also support wireless access networks with different access standards (such as a 5G network).
  • the memory 11014 and the processor 11013 may serve one or more boards. In other words, the memory and the processor can be set separately on each board. It can also be that multiple boards share the same memory and processor. In addition, necessary circuits can be provided on each board.
  • the computer program product includes one or more computer instructions.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium.
  • the computer instructions may be transmitted from a website, computer, server, or data center.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or data center integrated with one or more available media.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, and a magnetic tape), an optical medium (for example, a high-density digital video disc (digital video disc, DVD)), or a semiconductor medium (for example, a solid state disk, SSD)) etc.
  • the processor may be an integrated circuit chip with signal processing capabilities.
  • the steps of the foregoing method embodiments may be completed by hardware integrated logic circuits in the processor or instructions in the form of software.
  • the above-mentioned processor may be a general-purpose processor, a digital signal processor (digital signal processor, DSP), an application specific integrated circuit (ASIC), a ready-made programmable gate array (field programmable gate array, FPGA) or other Programming logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA ready-made programmable gate array
  • Programming logic devices discrete gates or transistor logic devices, discrete hardware components.
  • the methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a mature storage medium in the field, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers.
  • the storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.
  • the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory can be read-only memory (ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), and electrically available Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory.
  • the volatile memory may be random access memory (RAM), which is used as an external cache.
  • RAM random access memory
  • static random access memory static random access memory
  • dynamic RAM dynamic RAM
  • DRAM dynamic random access memory
  • synchronous dynamic random access memory synchronous DRAM, SDRAM
  • double data rate synchronous dynamic random access memory double data rate SDRAM, DDR SDRAM
  • enhanced synchronous dynamic random access memory enhanced SDRAM, ESDRAM
  • synchronous link dynamic random access memory synchronous link DRAM, SLDRAM
  • direct memory bus random access memory direct rambus RAM, DR RAM
  • At least one refers to one or more, and “multiple” refers to two or more.
  • “And/or” describes the association relationship of the associated objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, and B exists alone, where A, B can be singular or plural.
  • the character “/” generally indicates that the associated objects before and after are in an “or” relationship.
  • the following at least one item (a)” or similar expressions refers to any combination of these items, including any combination of a single item (a) or a plurality of items (a).
  • at least one of a, b, or c can mean: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple .
  • one embodiment or “an embodiment” mentioned throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of the present application. Therefore, the appearances of "in one embodiment” or “in an embodiment” in various places throughout the specification do not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner. It should be understood that in the various embodiments of the present application, the size of the sequence number of the above-mentioned processes does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic, and should not correspond to the embodiments of the present application. The implementation process constitutes any limitation.
  • component used in this specification are used to denote computer-related entities, hardware, firmware, a combination of hardware and software, software, or software in execution.
  • the component may be, but is not limited to, a process, a processor, an object, an executable file, an execution thread, a program, and/or a computer running on a processor.
  • the application running on the computing device and the computing device can be components.
  • One or more components may reside in processes and/or threads of execution, and components may be located on one computer and/or distributed among two or more computers.
  • these components can be executed from various computer readable media having various data structures stored thereon.
  • the component can be based on, for example, a signal having one or more data packets (e.g. data from two components interacting with another component in a local system, a distributed system, and/or a network, such as the Internet that interacts with other systems through a signal) Communicate through local and/or remote processes.
  • a signal having one or more data packets (e.g. data from two components interacting with another component in a local system, a distributed system, and/or a network, such as the Internet that interacts with other systems through a signal) Communicate through local and/or remote processes.
  • the disclosed system, device, and method can be implemented in other ways.
  • the device embodiments described above are merely illustrative, for example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined or It can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • the functional units in the various embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium.
  • the technical solution of the present application essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various 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. .

Landscapes

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

Abstract

L'invention concerne un procédé et un appareil de récupération de défaillance de faisceau. Si un premier faisceau de transmission utilisé pour une communication entre un terminal et un dispositif réseau a échoué et qu'un second faisceau de transmission n'est pas localisé, le terminal détecte et reçoit un message de déclenchement envoyé par le dispositif réseau. Après avoir reçu le message de déclenchement, le terminal effectue une nouvelle formation de faisceau. Autrement dit, le terminal reçoit une pluralité de signaux de référence envoyés par le dispositif réseau afin que le terminal puisse déterminer, en fonction de la pluralité de signaux de référence, le second faisceau de transmission qui permet la communication avec le terminal. De cette manière, le terminal peut effectuer une récupération de faisceau sans avoir à se reconnecter au dispositif réseau, ce qui permet de réduire les retards d'une récupération de faisceau par rapport à une reconnexion du terminal au dispositif réseau. Les modes de réalisation de l'invention permettent de réduire les retards d'une récupération de défaillance de faisceau.
PCT/CN2020/075106 2020-02-13 2020-02-13 Procédé et appareil de récupération de défaillance de faisceau WO2021159398A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2020/075106 WO2021159398A1 (fr) 2020-02-13 2020-02-13 Procédé et appareil de récupération de défaillance de faisceau
CN202080095095.3A CN115039486A (zh) 2020-02-13 2020-02-13 波束失败恢复的方法和装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2020/075106 WO2021159398A1 (fr) 2020-02-13 2020-02-13 Procédé et appareil de récupération de défaillance de faisceau

Publications (1)

Publication Number Publication Date
WO2021159398A1 true WO2021159398A1 (fr) 2021-08-19

Family

ID=77292612

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/075106 WO2021159398A1 (fr) 2020-02-13 2020-02-13 Procédé et appareil de récupération de défaillance de faisceau

Country Status (2)

Country Link
CN (1) CN115039486A (fr)
WO (1) WO2021159398A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114938712A (zh) * 2022-04-13 2022-08-23 北京小米移动软件有限公司 波束选择方法和装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109152054A (zh) * 2017-06-16 2019-01-04 华硕电脑股份有限公司 无线通信系统中用于非授权频谱的波束管理的方法和设备
WO2019029667A1 (fr) * 2017-08-10 2019-02-14 Mediatek Singapore Pte. Ltd. Système et procédé de transmission de demande de reprise sur défaillance de faisceau
WO2019048932A2 (fr) * 2017-09-11 2019-03-14 Lenovo (Singapore) Pte. Ltd. Procédés et dispositifs pour la transmission d'informations de capacité de dispositif

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109152054A (zh) * 2017-06-16 2019-01-04 华硕电脑股份有限公司 无线通信系统中用于非授权频谱的波束管理的方法和设备
WO2019029667A1 (fr) * 2017-08-10 2019-02-14 Mediatek Singapore Pte. Ltd. Système et procédé de transmission de demande de reprise sur défaillance de faisceau
WO2019048932A2 (fr) * 2017-09-11 2019-03-14 Lenovo (Singapore) Pte. Ltd. Procédés et dispositifs pour la transmission d'informations de capacité de dispositif

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
INTEL CORPORATION: "Summary 2 on L1-SINR and SCell BFR", 3GPP DRAFT; R1-1907825 SUMMARY ON L1-SINR AND SCELL BFR_V2, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. Reno, USA; 20190513 - 20190517, 17 May 2019 (2019-05-17), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP051740098 *
INTEL CORPORATION: "Summary 2 on L1-SINR and SCell BFR", 3GPP DRAFT; R1-1907892 SUMMARY ON L1-SINR AND SCELL BFR_V3, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. Reno, USA; 20190513 - 20190517, 17 May 2019 (2019-05-17), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, pages 1 - 2, XP051740153 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114938712A (zh) * 2022-04-13 2022-08-23 北京小米移动软件有限公司 波束选择方法和装置

Also Published As

Publication number Publication date
CN115039486A (zh) 2022-09-09

Similar Documents

Publication Publication Date Title
JP6940914B2 (ja) Ｆｄｄ‐ｔｄｄジョイントキャリアアグリゲーションのためのアップリンク制御シグナリング
US11855740B2 (en) Link failure recovery method and related device
WO2021027750A1 (fr) Procédé de mise à jour d'informations de faisceau et appareil de communication
WO2020248825A1 (fr) Procédé et appareil de détermination d'état de panneau d'antenne
WO2020228589A1 (fr) Procédé de communication et appareil de communication
WO2020221349A1 (fr) Procédé et appareil de rapport de défaillance de faisceau
US20220287010A1 (en) Method for information transmission and related apparatuses
WO2020233692A1 (fr) Procédé et appareil de communication
EP3942876B1 (fr) Procédé et appareil de gestion de faisceau, et ue
WO2020238617A1 (fr) Procédé et appareil de détermination d'un retard d'activation de cellule
WO2021227755A1 (fr) Procédé et appareil de transfert intercellulaire
US20220240120A1 (en) Resource Measurement Method and Apparatus
WO2021179305A1 (fr) Procédé et appareil de transmission en liaison montante
WO2020207333A1 (fr) Procédé et appareil pour une reprise après défaillance de liaison
WO2021159419A1 (fr) Procédé de transmission d'informations et appareil associé
US20240030964A1 (en) Communication method and apparatus
WO2021051392A1 (fr) Procédé et appareil de détermination de priorité
WO2021062764A1 (fr) Procédé et dispositif de traitement d'avance de synchronisation (ta) pour terminal
WO2021056460A1 (fr) Procédé et appareil de gestion de mesure, et dispositif de communication
WO2020206581A1 (fr) Procédé de transmission de signal, dispositif terminal, et dispositif de réseau
WO2021032007A1 (fr) Procédé et dispositif de transmission de rapport de rupture de la liaison
WO2021203374A1 (fr) Procédé et appareil de transmission de signal d'accès aléatoire
WO2021159398A1 (fr) Procédé et appareil de récupération de défaillance de faisceau
WO2021062766A1 (fr) Procédé de rapport de mesure d'interférence et appareil de communication
US20230261723A1 (en) Apparatus, Method, and Computer Program

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20918953

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20918953

Country of ref document: EP

Kind code of ref document: A1