WO2021196236A1 - 一种媒体访问控制层控制元素发送方法和终端设备 - Google Patents

一种媒体访问控制层控制元素发送方法和终端设备 Download PDF

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Publication number
WO2021196236A1
WO2021196236A1 PCT/CN2020/083374 CN2020083374W WO2021196236A1 WO 2021196236 A1 WO2021196236 A1 WO 2021196236A1 CN 2020083374 W CN2020083374 W CN 2020083374W WO 2021196236 A1 WO2021196236 A1 WO 2021196236A1
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Prior art keywords
beam failure
mac
terminal device
information
occurred
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PCT/CN2020/083374
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English (en)
French (fr)
Inventor
尤心
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Publication date
Application filed by Guangdong Oppo Mobile Telecommunications Corp Ltd filed Critical Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority to PCT/CN2020/083374 priority Critical patent/WO2021196236A1/zh
Priority to EP20928785.3A priority patent/EP4089931A4/en
Priority to CN202080092737.4A priority patent/CN114930738A/zh
Priority to CN202310458219.5A priority patent/CN116471690A/zh
Publication of WO2021196236A1 publication Critical patent/WO2021196236A1/zh
Priority to US17/945,027 priority patent/US12356445B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H04W72/231—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal the control data signalling from the layers above the physical layer, e.g. RRC or MAC-CE signalling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0868—Hybrid systems, i.e. switching and combining
    • H04B7/088—Hybrid systems, i.e. switching and combining using beam selection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • H04W74/004—Transmission of channel access control information in the uplink, i.e. towards network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0032—Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
    • H04L5/0035—Resource allocation in a cooperative multipoint environment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/046—Wireless resource allocation based on the type of the allocated resource the resource being in the space domain, e.g. beams
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0636—Feedback format
    • H04B7/0639—Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access
    • H04W74/0838—Random access procedures, e.g. with 4-step access using contention-free random access [CFRA]

Definitions

  • This application relates to the field of communications, and more specifically, to a method and terminal device for sending a media access control layer control element.
  • the terminal device can perform beam failure detection (BFD, Beam Failure Detection) and beam failure recovery (BFR, Beam Failure Recovery) processes based on the network configuration.
  • Beam failure detection means that the terminal device detects the beam failure on the synchronization signal block (SSB, SS/PBCH Block)/channel state information (CSI, Channel State Information)-reference signal (RS, Reference Signal) configured in the network.
  • Beam failure recovery is used by the terminal equipment to indicate a new SSB/CSI-RS to the serving cell.
  • the UE can only perform beam failure recovery by initiating contention-based random access.
  • R16 introduces the secondary cell (SCell, Secondary cell) to indicate the beam failure of the SCell by reporting the BFR media access control layer (MAC, MediaAccessControl) control element (CE, ControlElement), and through the third step message of random access (Msg3) Transmit the MAC CE.
  • SCell Secondary cell
  • MAC media access control layer
  • CE ControlElement
  • Msg3 third step message of random access
  • the embodiment of the present application provides a method and terminal device for sending a media access control layer control element, which can avoid transmission failure due to an inappropriate size of the MAC CE used to report beam failure.
  • the embodiment of this application proposes a MAC CE sending method, including:
  • the terminal device sends the MAC CE used to report the beam failure according to the size of the uplink resources available in the random access process.
  • An embodiment of the present application proposes a terminal device, including:
  • the sending module is used to send the MAC CE used to report the beam failure according to the size of the available uplink resources in the random access process.
  • An embodiment of the present application proposes a terminal device, including: a processor and a memory, the memory is used to store a computer program, the processor is used to call and run the computer program stored in the memory, and execute any of the above-mentioned MAC CE sending method.
  • An embodiment of the present application proposes a chip, including a processor, configured to call and run a computer program from a memory, so that a device installed with the chip executes any one of the MAC CE sending methods described above.
  • the embodiment of the present application proposes a computer-readable storage medium for storing a computer program, and the computer program enables a computer to execute any one of the foregoing MAC CE sending methods.
  • the embodiment of the present application proposes a computer program product, which includes computer program instructions, and the computer program instructions cause a computer to execute any one of the foregoing MAC CE sending methods.
  • An embodiment of the present application proposes a computer program that enables a computer to execute the MAC CE sending method described above.
  • the terminal device sends the MAC CE used to report the beam failure according to the size of the uplink resources available in the random access process, which can avoid the inability to transmit the MAC CE due to the inappropriate size of the MAC CE.
  • Fig. 1 is a schematic diagram of an application scenario of an embodiment of the present application.
  • FIG. 2 is a flowchart of implementing a method 200 for sending a MAC CE according to an embodiment of the present application.
  • Fig. 3 is a flowchart of a method 300 for sending a MAC CE according to an embodiment of the present application.
  • FIG. 4 is a flowchart of implementing a method 400 for sending a MAC CE according to an embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of a terminal device 500 according to an embodiment of the present application.
  • FIG. 6 is a schematic structural diagram of a terminal device 500 according to an embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of a communication device 700 according to an embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of a chip 800 according to an embodiment of the present application.
  • GSM Global System of Mobile Communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • LTE-A Advanced Long Term Evolution
  • NR New Radio
  • evolution system of NR system LTE (LTE-based access to unlicensed spectrum, LTE-U) system on unlicensed spectrum, NR (NR-based access to unlicensed spectrum) unlicensed spectrum, NR-U) system, universal mobile telecommunication system (UMTS), wireless local area network (Wireless Local Area Networks, WLAN), wireless fidelity (Wireless Fidelity, WiFi), next-generation communications (5th-Generation) , 5G) system or other communication systems, etc.
  • GSM Global System of Mobile Communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • LTE-A Advanced Long Term Evolution
  • NR New Radio
  • D2D Device to Device
  • M2M Machine to Machine
  • MTC machine type communication
  • V2V vehicle to vehicle
  • the communication system in the embodiments of the present application can be applied to a carrier aggregation (Carrier Aggregation, CA) scenario, can also be applied to a dual connectivity (DC) scenario, and can also be applied to a standalone (SA) deployment.
  • CA Carrier Aggregation
  • DC dual connectivity
  • SA standalone
  • the embodiment of the application does not limit the applied frequency spectrum.
  • the embodiments of this application can be applied to licensed spectrum or unlicensed spectrum.
  • the embodiments of this application describe various embodiments in combination with network equipment and terminal equipment.
  • the terminal equipment may also be referred to as User Equipment (UE), access terminal, subscriber unit, user station, mobile station, mobile station, and remote station. Station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc.
  • UE User Equipment
  • the terminal device can be a station (STAION, ST) in the WLAN, a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, and personal digital processing (Personal Digital Assistant, PDA) devices, handheld devices with wireless communication capabilities, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, and next-generation communication systems, such as terminal devices in the NR network or Terminal equipment in the public land mobile network (PLMN) network that will evolve in the future.
  • STAION, ST station
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • the terminal device may also be a wearable device.
  • Wearable devices can also be called wearable smart devices. It is a general term for using wearable technology to intelligently design everyday wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes.
  • a wearable device is a portable device that is directly worn on the body or integrated into the user's clothes or accessories. Wearable devices are not only a kind of hardware device, but also realize powerful functions through software support, data interaction, and cloud interaction.
  • wearable smart devices include full-featured, large-sized, complete or partial functions that can be achieved without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, and need to cooperate with other devices such as smart phones.
  • a network device can be a device used to communicate with mobile devices.
  • the network device can be an access point (AP) in WLAN, a base station (BTS) in GSM or CDMA, or a device in WCDMA.
  • a base station (NodeB, NB) can also be an Evolutional Node B (eNB or eNodeB) in LTE, or a relay station or an access point, or a vehicle-mounted device, a wearable device, and a network device (gNB) in the NR network Or network equipment in the PLMN network that will evolve in the future.
  • AP access point
  • BTS base station
  • gNB network device
  • the network equipment provides services for the cell
  • the terminal equipment communicates with the network equipment through the transmission resources (for example, frequency domain resources, or spectrum resources) used by the cell
  • the cell may be a network equipment (for example, The cell corresponding to the base station.
  • the cell can belong to a macro base station or a base station corresponding to a small cell.
  • the small cell here can include: Metro cell, Micro cell, Pico Cells, Femto cells, etc. These small cells have the characteristics of small coverage and low transmit power, and are suitable for providing high-rate data transmission services.
  • Figure 1 exemplarily shows one network device 110 and two terminal devices 120.
  • the wireless communication system 100 may include multiple network devices 110, and the coverage of each network device 110 may include other numbers.
  • the terminal device 120 is not limited in this embodiment of the application.
  • the embodiments of the present application can be applied to one terminal device 120 and one network device 110, and can also be applied to one terminal device 120 and another terminal device 120.
  • the wireless communication system 100 may also include other network entities such as mobility management entities (Mobility Management Entity, MME), access and mobility management functions (Access and Mobility Management Function, AMF), etc. This is not limited.
  • MME Mobility Management Entity
  • AMF Access and Mobility Management Function
  • FIG. 2 is a flowchart of implementing a method for sending a MAC CE according to an embodiment of the application, including the following steps:
  • the terminal device sends the MAC CE used to report the beam failure according to the size of the available uplink resource in the random access process.
  • the uplink resources available in the foregoing random access process include at least one of the following:
  • the uplink grant (UL grant, UpLink grant) carried in the random access response (RAR, Random Access Response) in the second step message (Msg2) of random access;
  • the foregoing pre-configured UL grant refers to a UL grant configured by the network for transmitting the physical uplink shared channel (PUSCH, Physical Uplink Shared Channel) part of the MsgA.
  • PUSCH Physical Uplink Shared Channel
  • the foregoing random access procedure includes contention-based random access (CBRA) and/or contention-free random access (CFRA)
  • the random access process may include four-step random access (4-step RACH) and two-step random access (2-step RACH).
  • 4-step RACH four-step random access
  • 2-step RACH two-step random access
  • the preamble of the first step of the four-step random access and the payload (payload) of the third step can be sent through one message (ie, MsgA).
  • the embodiment of this application adopts at least one of the following two methods:
  • the embodiment of the present application generates a MAC CE according to the size of the UL grant carried in the RAR when/after receiving the RAR; or after obtaining the pre-configured UL grant, generates the MAC CE according to the size of the UL grant. In this way, it can be avoided that the generated MAC CE cannot be transmitted due to improper size.
  • the method before step S210, the method further includes:
  • the terminal device receives the RAR in Msg2/MsgB, and triggers/generates the MAC CE based on the UL grant size carried in the RAR; or, the terminal device triggers/generates the MAC CE based on the pre-configured UL grant size.
  • the above-mentioned RAR responds to the random access Msg1, MsgA, or preamble sent by the terminal device and triggered by the beam failure recovery process.
  • a MAC CE for reporting beam failure information is generated. Afterwards, when/after the RAR is received, if necessary, the MAC CE is truncated according to the size of the UL grant carried in the RAR, so that the truncated MAC CE can be transmitted normally; or, after obtaining the pre-order When/after the UL grant is configured, if necessary, the MAC CE is truncated according to the size of the pre-configured UL grant, so that the truncated MAC CE can be transmitted normally.
  • the method before step S210, the method further includes:
  • S410 The terminal device determines that a beam failure occurs, and triggers/generates a MAC CE used to report the beam failure.
  • the terminal device receives the RAR in Msg2/MsgB, and if the UL grant carried in the RAR cannot satisfy the transmission of the MAC CE, the MAC CE is truncated; or the terminal device is pre-configured In the case where the UL grant cannot satisfy the transmission of the MAC CE, the MAC CE is truncated.
  • the MAC CE does not need to be truncated, and the MAC CE can be directly transmitted.
  • the MAC CE or the truncated MAC CE may be transmitted in Msg3 or MsgA in the random access procedure.
  • the above-mentioned MAC CE carries at least one of the following:
  • Beam failure recovery information of at least one specific cell SPCell, Special Cell
  • the SPCell includes a primary cell (PCell, Primary Cell) and a primary and secondary cell (PSCell, Primary Secondary Cell).
  • PCell Primary Cell
  • PSCell Primary Secondary Cell
  • the above method further includes: the terminal device determines the content carried by the MAC CE according to the current situation of the cell where the beam failure occurs.
  • the beam failure recovery information of the at least one SPCell includes:
  • Indication information of the SPCell in which the beam failure has occurred where the indication information is used to indicate whether there is a beam that satisfies the condition on the SPCell in which the beam failure has occurred;
  • the beam failure recovery information of at least one SCell includes:
  • Indication information of the SCell in which the beam failure has occurred where the indication information is used to indicate whether there is a beam that meets the conditions on the SCell in which the beam failure has occurred;
  • the content that allows truncation in the above MAC CE includes at least one of the following:
  • Indication information of the SPCell in which the beam failure has occurred where the indication information is used to indicate whether there is a beam that satisfies the condition on the SPCell in which the beam failure has occurred;
  • Indication information of the SCell in which the beam failure has occurred where the indication information is used to indicate whether there is a beam that meets the conditions on the SCell in which the beam failure has occurred;
  • the aforementioned identification information includes a serving cell index (serving cell index) and/or bit information indicating whether a beam failure occurs in the serving cell.
  • the above identification information can be an explicit serving cell index (5bit), or it can be a bit in a bitmap. For example, when 1 bit corresponding to a serving cell is set to 1, it represents the occurrence of the serving cell. Beam failure; when set to 0, it means that no beam failure has occurred in the serving cell.
  • the aforementioned beam information includes a CSI-RS/SSB index.
  • the UE triggers or generates a MAC CE for reporting beam failure when/after receiving the RAR.
  • the UE may trigger/generate the MAC CE based on the size of the UL grant carried in the RAR.
  • the above-mentioned RAR responds to the random access Msg1, preamble, or MsgA triggered by the BFR sent by the UE.
  • the UE sends the random access Msg1/preamble triggered by the BFR, and when/after receiving the RAR in the Msg3, it triggers or generates a report according to the size of the UL grant carried in the RAR
  • the MAC CE of the beam failure is a parameter that triggers or generates a report according to the size of the UL grant carried in the RAR.
  • the UE sends the random access MsgA triggered by the BFR, and when/after receiving the RAR in the MsgB, it triggers or generates a MAC CE that reports the beam failure according to the size of the UL grant carried in the RAR .
  • the RAR in the MsgB may refer to a fallback RAR (fallback RAR).
  • the UE obtains a pre-configured UL grant, and triggers or generates a MAC CE that reports beam failure according to the size of the pre-configured UL grant.
  • the pre-configured UL grant may indicate the UL grant configured by the network for transmitting the PUSCH part of the MsgA.
  • the aforementioned random access includes CBRA and/or CFRA.
  • the foregoing MAC CE may carry beam failure recovery information of at least one SPCell
  • the above-mentioned MAC CE may also carry beam failure recovery information of at least one SCell.
  • the above beam failure recovery information includes at least one of the following:
  • the identification information of the SPCell where the beam failure occurred can be an explicit serving cell index (5bit) or a bit in the bitmap. For example, 1 bit corresponding to a serving cell is set to 1 to indicate that the serving cell has a beam failure ;
  • the identification information of the SCell where the beam failure occurred can be an explicit serving cell index (5bit) or a bit in the bitmap. For example, 1 bit corresponding to a serving cell is set to 1 to indicate that the serving cell has a beam failure .
  • the above-mentioned MAC CE may also carry indication information, which is used to indicate whether there is a beam that satisfies the condition.
  • the above-mentioned MAC CE may also carry beam information that meets the conditions, such as CSI-RS/SSB index.
  • the UE when/after the UE has a beam failure, it triggers or generates a MAC CE, and the MAC CE may include at least one of the following:
  • the identification information of the SPCell where the beam fails can be an explicit serving cell index (5bit) or a bit in the bitmap. For example, the 1bit corresponding to a serving cell is set to 1, which means that the serving cell has a beam. fail.
  • the identification information of the SCell where the beam failure occurred can be an explicit serving cell index (5bit) or a bit in the bitmap. For example, the 1bit corresponding to a serving cell is set to 1, which means that the serving cell has a beam. fail.
  • Indication information used to indicate whether there are beams that meet the conditions.
  • the beam information that meets the conditions such as CSI-RS/SSB index.
  • the UE judges the content carried by the MAC CE, it may be based on the current situation of the cell where the beam failure occurs, or simply based on whether the MAC CE is to be carried by Msg3.
  • the UE When/after the UE receives the RAR, it needs to judge again whether the UL grant carried in the RAR can satisfy the transmission of the MAC CE;
  • the UE will truncate the above MAC CE, including truncating at least one of the following:
  • the identification information of the SCell where the beam failure occurred can be an explicit serving cell index (5bit) or a bit in the bitmap. For example, the 1bit corresponding to a serving cell is set to 1, which means that the serving cell has a beam. fail;
  • the indication information of the SPCell in which the beam failed is used to indicate whether there is a beam that meets the conditions on the SPCell;
  • the beam information that meets the conditions on the SPCELL where the beam fails such as CSI-RS/SSB index
  • the indication information of the SCell in which the beam failed is used to indicate whether there is a beam that meets the conditions on the SCell;
  • the beam information that meets the conditions on the SCELL where the beam fails such as CSI-RS/SSB index.
  • the UE when/after a beam failure occurs, the UE triggers or generates a MAC CE for reporting the beam failure.
  • the UE sends the Msg1/preamble for random access.
  • the UE sends a random access MsgA, and when/after receiving the RAR in the MsgB, it judges whether the UL grant can satisfy the MAC CE transmission according to the size of the UL grant carried in the RAR; if If it can be satisfied, the MAC CE is sent; if it cannot be satisfied, the MAC CE is truncated, and then the truncated MAC CE is sent.
  • the RAR in the MsgB may refer to a fallback RAR (fallback RAR).
  • the UE obtains a pre-configured UL grant, and judges whether the MAC CE transmission can be satisfied according to the size of the pre-configured UL grant; if it can be satisfied, the MAC CE is sent; if it cannot be satisfied, the MAC CE is truncated. After that, the truncated MAC CE is transmitted in MsgA.
  • the pre-configured UL grant may indicate the UL grant configured by the network for transmitting the PUSCH part of the MsgA.
  • the UE can generate and send BFR MAC CE based on the resource size configured by the RAR, or truncate the generated BFR MAC CE if necessary, so as to avoid failure due to inappropriate MAC CE size. Transmission of the MAC CE.
  • FIG. 5 is a schematic structural diagram of a terminal device 500 according to an embodiment of the present application, including:
  • the sending module 510 is configured to send a MAC CE for reporting beam failure according to the size of the uplink resources available in the random access process.
  • the uplink resources available in the random access process include at least one of the following:
  • the RAR in the MsgB may refer to a fallback RAR (fallback RAR).
  • the pre-configured UL grant represents the UL grant configured by the network for transmitting the PUSCH part of the MsgA.
  • the aforementioned terminal device further includes:
  • the first generating module 620 is configured to receive the RAR in Msg2/MsgB, and trigger/generate the MAC CE based on the UL grant size carried in the RAR; or, trigger/generate the MAC CE based on the pre-configured UL grant size MAC CE.
  • the above-mentioned RAR responds to the random access Msg1, MsgA or preamble sent by the terminal device and triggered by the beam failure recovery process.
  • the aforementioned terminal device further includes:
  • the second generation module 630 is configured to determine that a beam failure occurs, and trigger/generate a MAC CE used to report the beam failure.
  • the truncation module 640 is used for the RAR in Msg2/MsgB.
  • the MAC CE is truncated; or, in the pre-configured UL In the case that the grant cannot satisfy the transmission of the MAC CE, the MAC CE is truncated.
  • the above-mentioned MAC CE carries at least one of the following:
  • Beam failure recovery information of at least one secondary cell SCell Beam failure recovery information of at least one secondary cell SCell.
  • the aforementioned terminal device further includes:
  • the determining module 650 is configured to determine the content carried by the MAC CE according to the current situation of the cell where the beam failure occurs.
  • the beam failure recovery information of the at least one SPCell includes:
  • Indication information of the SPCell in which the beam failure has occurred where the indication information is used to indicate whether there is a beam that satisfies the condition on the SPCell in which the beam failure has occurred;
  • the beam failure recovery information of the at least one SCell includes:
  • Indication information of the SCell in which the beam failure has occurred where the indication information is used to indicate whether there is a beam that meets the conditions on the SCell in which the beam failure has occurred;
  • the content that allows truncation in the above MAC CE includes at least one of the following:
  • Indication information of the SPCell in which the beam failure has occurred where the indication information is used to indicate whether there is a beam that satisfies the condition on the SPCell in which the beam failure has occurred;
  • Indication information of the SCell in which the beam failure has occurred where the indication information is used to indicate whether there is a beam that meets the conditions on the SCell in which the beam failure has occurred;
  • the aforementioned identification information includes a serving cell index and/or indicator information indicating whether a beam failure occurs in the serving cell.
  • the aforementioned beam information includes a CSI-RS/SSB index.
  • the aforementioned random access procedure includes contention random access and/or non-competition random access.
  • FIG. 7 is a schematic structural diagram of a communication device 700 according to an embodiment of the present application.
  • the communication device 700 shown in FIG. 7 includes a processor 710, and the processor 710 can call and run a computer program from a memory to implement the method in the embodiment of the present application.
  • the communication device 700 may further include a memory 720.
  • the processor 710 may call and run a computer program from the memory 720 to implement the method in the embodiment of the present application.
  • the memory 720 may be a separate device independent of the processor 710, or may be integrated in the processor 710.
  • the communication device 700 may further include a transceiver 730, and the processor 710 may control the transceiver 730 to communicate with other devices. Specifically, it may send information or data to other devices, or receive other devices. Information or data sent by the device.
  • the transceiver 730 may include a transmitter and a receiver.
  • the transceiver 730 may further include an antenna, and the number of antennas may be one or more.
  • the communication device 700 may be a terminal device of an embodiment of the application, and the terminal device 700 may implement the corresponding process implemented by the first terminal device in each method of the embodiment of the application.
  • the terminal device 700 may implement the corresponding process implemented by the first terminal device in each method of the embodiment of the application.
  • the communication device 700 may be a terminal device of an embodiment of the application, and the terminal device 700 may implement the corresponding process implemented by the first terminal device in each method of the embodiment of the application.
  • the terminal device 700 may implement the corresponding process implemented by the first terminal device in each method of the embodiment of the application.
  • FIG. 8 is a schematic structural diagram of a chip 800 according to an embodiment of the present application.
  • the chip 800 shown in FIG. 8 includes a processor 810, and the processor 810 can call and run a computer program from the memory to implement the method in the embodiment of the present application.
  • the chip 800 may further include a memory 820.
  • the processor 810 may call and run a computer program from the memory 820 to implement the method in the embodiment of the present application.
  • the memory 820 may be a separate device independent of the processor 810, or may be integrated in the processor 810.
  • the chip 800 may further include an input interface 830.
  • the processor 810 can control the input interface 830 to communicate with other devices or chips, and specifically, can obtain information or data sent by other devices or chips.
  • the chip 800 may further include an output interface 840.
  • the processor 810 can control the output interface 840 to communicate with other devices or chips, and specifically, can output information or data to other devices or chips.
  • the chip can be applied to the terminal device in the embodiment of the present application, and the chip can implement the corresponding process implemented by the terminal device in each method of the embodiment of the present application.
  • the chip can implement the corresponding process implemented by the terminal device in each method of the embodiment of the present application.
  • the chip mentioned in the embodiment of the present application may also be referred to as a system-level chip, a system-on-chip, a system-on-chip, or a system-on-chip, etc.
  • the aforementioned processors can be general-purpose processors, digital signal processors (digital signal processors, DSP), ready-made programmable gate arrays (field programmable gate arrays, FPGAs), application specific integrated circuits (ASICs), or Other programmable logic devices, transistor logic devices, discrete hardware components, etc.
  • DSP digital signal processors
  • FPGA field programmable gate arrays
  • ASIC application specific integrated circuits
  • the aforementioned general-purpose processor may be a microprocessor or any conventional processor.
  • the above-mentioned memory may be volatile memory or 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).
  • the memory in the embodiment of the present application may also be static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM) and so on. That is to say, the memory in the embodiments of the present application is intended to include, but is not limited to, these and any other suitable types of memory.
  • 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 instruction 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 instruction may be transmitted from a website, computer, server, or data center through a cable (Such as coaxial cable, optical fiber, Digital Subscriber Line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) to another website site, 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 DVD), or a semiconductor medium (for example, a solid state disk (SSD)).
  • 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.

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Abstract

本申请实施例涉及一种媒体访问控制层控制元素发送方法和终端设备，其中方法包括：终端设备根据随机接入过程中可用的上行资源的大小，发送用于上报波束失败的媒体访问控制层(MAC)控制元素(CE)。本申请实施例能够避免由于用于上报波束失败的MAC CE的大小不合适而导致的传输失败。

Description

一种媒体访问控制层控制元素发送方法和终端设备 技术领域
本申请涉及通信领域，并且更具体地，涉及一种媒体访问控制层控制元素发送方法和终端设备。
背景技术
终端设备可以基于网络配置执行波束失败检测(BFD，Beam Failure Detection)和波束失败恢复(BFR，Beam Failure Recovery)过程。波束失败检测即终端设备在网络配置的同步信号块(SSB，SS/PBCH Block)/信道状态信息(CSI，Channel State Information)-参考信号(RS，Reference Signal)上检测到波束失败。波束失败恢复用于终端设备向服务小区指示一个新的SSB/CSI-RS。
如果网络侧没有为BFR配置特定资源，UE只能通过发起基于竞争的随机接入来进行波束失败恢复。目前R16引入了辅小区(SCell，Secondary cell)通过上报BFR媒体访问控制层(MAC，MediaAccessControl)控制元素(CE，ControlElement)来指示该SCell发生了波束失败，并通过随机接入的第三步消息(Msg3)传输该MAC CE。但是由于Msg3资源的大小是通过网络侧在RAR中配置的，可能由于MAC CE大小不合适而导致无法传输该MAC CE。
发明内容
本申请实施例提供媒体访问控制层控制元素发送方法和终端设备，能够避免由于用于上报波束失败的MAC CE的大小不合适而导致的传输失败。
本申请实施例提出一种MAC CE发送方法，包括：
终端设备根据随机接入过程中可用的上行资源的大小，发送用于上报波束失败的MAC CE。
本申请实施例提出一种终端设备，包括：
发送模块，用于根据随机接入过程中可用的上行资源的大小，发送用于上报波束失败的MAC CE。
本申请实施例提出一种终端设备，包括：处理器和存储器，该存储器用于存储计算机程序，所述处理器用于调用并运行所述存储器中存储的计算机程序，执行上述任一所述的MAC CE发送方法。
本申请实施例提出一种芯片，包括：处理器，用于从存储器中调用并运行计算机程序，使得安装有所述芯片的设备执行上述任一所述的MAC CE发送方法。
本申请实施例提出一种计算机可读存储介质，用于存储计算机程序，所述计算机程序使得计算机执行如上述任一所述的MAC CE发送方法。
本申请实施例提出一种计算机程序产品，包括计算机程序指令，该计算机程序指令使得计算机执行如上述任一所述的MAC CE发送方法。
本申请实施例提出一种计算机程序，所述计算机程序使得计算机执行如上述任一所述的MAC CE发送方法。
根据本申请实施例，终端设备根据随机接入过程中可用的上行资源的大小发送用于上报波束失败的MAC CE，能够避免由于MAC CE大小不合适而无法传输该MAC CE。
附图说明
图1是本申请实施例的应用场景的示意图。
图2是根据本申请实施例的一种MAC CE发送方法200实现流程图。
图3是根据本申请实施例的一种MAC CE发送方法300实现流程图。
图4是根据本申请实施例的一种MAC CE发送方法400实现流程图。
图5是根据本申请实施例的终端设备500示意性结构图。
图6是根据本申请实施例的终端设备500示意性结构图。
图7是根据本申请实施例的通信设备700示意性结构图。
图8是根据本申请实施例的芯片800的示意性结构图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行描述。
需要说明的是，本申请实施例的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。同时描述的“第一”、“第二”描述的对象可以相同，也可以不同。
本申请实施例的技术方案可以应用于各种通信系统，例如：全球移动通讯(Global System of Mobile communication，GSM)系统、码分多址(Code Division Multiple Access，CDMA)系统、宽带码分多址(Wideband Code Division Multiple Access，WCDMA)系统、通用分组无线业务(General Packet Radio Service，GPRS)、长期演进(Long Term Evolution，LTE)系统、先进的长期演进(Advanced long term evolution，LTE-A)系统、新无线(New Radio，NR)系统、NR系统的演进系统、免授权频谱上的LTE(LTE-based access to unlicensed spectrum，LTE-U)系统、免授权频谱上的NR(NR-based access to unlicensed spectrum，NR-U)系统、通用移动通信系统(Universal Mobile Telecommunication System，UMTS)、无线局域网(Wireless Local Area Networks，WLAN)、无线保真(Wireless Fidelity，WiFi)、下一代通信(5th-Generation，5G)系统或其他通信系统等。
通常来说，传统的通信系统支持的连接数有限，也易于实现，然而，随着通信技术的发展，移动通信系统将不仅支持传统的通信，还将支持例如，设备到设备(Device to Device，D2D)通信，机器到机器(Machine to Machine，M2M)通信，机器类型通信(Machine Type Communication，MTC)，以及车辆间(Vehicle to Vehicle，V2V)通信等，本申请实施例也可以应用于 这些通信系统。
可选地，本申请实施例中的通信系统可以应用于载波聚合(Carrier Aggregation，CA)场景，也可以应用于双连接(Dual Connectivity，DC)场景，还可以应用于独立(Standalone，SA)布网场景。
本申请实施例对应用的频谱并不限定。例如，本申请实施例可以应用于授权频谱，也可以应用于免授权频谱。
本申请实施例结合网络设备和终端设备描述了各个实施例，其中：终端设备也可以称为用户设备(User Equipment，UE)、接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置等。终端设备可以是WLAN中的站点(STAION，ST)，可以是蜂窝电话、无绳电话、会话启动协议(Session Initiation Protocol，SIP)电话、无线本地环路(Wireless Local Loop，WLL)站、个人数字处理(Personal Digital Assistant，PDA)设备、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备以及下一代通信系统，例如，NR网络中的终端设备或者未来演进的公共陆地移动网络(Public Land Mobile Network，PLMN)网络中的终端设备等。
作为示例而非限定，在本申请实施例中，该终端设备还可以是可穿戴设备。可穿戴设备也可以称为穿戴式智能设备，是应用穿戴式技术对日常穿戴进行智能化设计、开发出可以穿戴的设备的总称，如眼镜、手套、手表、服饰及鞋等。可穿戴设备即直接穿在身上，或是整合到用户的衣服或配件的一种便携式设备。可穿戴设备不仅仅是一种硬件设备，更是通过软件支持以及数据交互、云端交互来实现强大的功能。广义穿戴式智能设备包括功能全、尺寸大、可不依赖智能手机实现完整或者部分的功能，例如：智能手表或智能眼镜等，以及只专注于某一类应用功能，需要和其它设备如智能手机配合使用，如各类进行体征监测的智能手环、智能首饰等。
网络设备可以是用于与移动设备通信的设备，网络设备可以是WLAN 中的接入点(Access Point，AP)，GSM或CDMA中的基站(Base Transceiver Station，BTS)，也可以是WCDMA中的基站(NodeB，NB)，还可以是LTE中的演进型基站(Evolutional Node B，eNB或eNodeB)，或者中继站或接入点，或者车载设备、可穿戴设备以及NR网络中的网络设备(gNB)或者未来演进的PLMN网络中的网络设备等。
在本申请实施例中，网络设备为小区提供服务，终端设备通过该小区使用的传输资源(例如，频域资源，或者说，频谱资源)与网络设备进行通信，该小区可以是网络设备(例如基站)对应的小区，小区可以属于宏基站，也可以属于小小区(Small cell)对应的基站，这里的小小区可以包括：城市小区(Metro cell)、微小区(Micro cell)、微微小区(Pico cell)、毫微微小区(Femto cell)等，这些小小区具有覆盖范围小、发射功率低的特点，适用于提供高速率的数据传输服务。
图1示例性地示出了一个网络设备110和两个终端设备120，可选地，该无线通信系统100可以包括多个网络设备110，并且每个网络设备110的覆盖范围内可以包括其它数量的终端设备120，本申请实施例对此不做限定。本申请实施例可以应用于一个终端设备120与一个网络设备110，也可以应用于一个终端设备120与另一个终端设备120。
可选地，该无线通信系统100还可以包括移动性管理实体(Mobility Management Entity，MME)、接入与移动性管理功能(Access and Mobility Management Function，AMF)等其他网络实体，本申请实施例对此不作限定。
应理解，本文中术语“系统”和“网络”在本文中常被可互换使用。本文中术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。
本申请实施例提出一种MAC CE发送方法，图2是根据本申请实施例的一种MAC CE发送方法实现流程图，包括以下步骤：
S210：终端设备根据随机接入过程中可用的上行资源的大小，发送用于上报波束失败的MAC CE。
在一些实施方式中，上述随机接入过程中可用的上行资源包括以下至少一项：
随机接入的第二步消息(Msg2)中的随机接入响应(RAR，Random Access Response)携带的上行授权(UL grant，UpLink grant)；
随机接入的MsgB中的RAR携带的UL grant；该RAR可以指回退RAR(fallback RAR)；
预配置的UL grant。
可选地，上述预配置的UL grant表示网络配置的用于发送MsgA中物理上行共享信道(PUSCH，Physical Uplink Shared Channel)部分的UL grant。
可选地，上述随机接入过程包括竞争随机接入(Contention Based Random Access,CBRA)和/或非竞争随机接入(Contention-Free Random Access，CFRA)
随机接入过程可以包括四步随机接入(4-step RACH)和两步随机接入(2-step RACH)。在两步随机接入中，可以将四步随机接入的第一步的前导码(preamble)和第三步的有效载荷(payload)通过一个消息(即MsgA)发送。
为了生成发送合适的MAC CE，本申请实施例至少采用以下两种方式之一：
方式一：
本申请实施例在接收到RAR时/后，根据该RAR中携带的UL grant的大小生成MAC CE；或者在获取到预配置UL grant后，根据该UL grant的大小生成MAC CE。这样，能够避免生成的MAC CE因大小不合适而无法传输。
在一些实施方式中，如图3所示，上述步骤S210之前还包括：
S310：终端设备接收Msg2/MsgB中的RAR，基于所述RAR中携带的 UL grant的大小触发/生成MAC CE；或者，终端设备基于预配置的UL grant的大小触发/生成MAC CE。
可选地，上述RAR响应于所述终端设备发送的由波束失败恢复过程触发的随机接入的Msg1、MsgA或前导码(preamble)。
方式二：
当所述服务小区发生波束失败时/后，生成用于上报波束失败信息的MAC CE。之后，当接收到RAR时/后，在需要的情况下，根据该RAR中携带的UL grant的大小对MAC CE进行截短，使截短后的MAC CE能够正常传输；或者，在获取到预配置的UL grant时/后，在需要的情况下，根据该预配置的UL grant的大小对MAC CE进行截短，使截短后的MAC CE能够正常传输。
在一些实施方式中，如图4所示，上述步骤S210之前还包括：
S410：终端设备确定发生波束失败，触发/生成用于上报波束失败的MAC CE。
S420：终端设备接收Msg2/MsgB中的RAR，在所述RAR中携带的UL grant不能满足所述MAC CE的传输的情况下，将所述MAC CE截短；或者，所述终端设备在预配置的UL grant不能满足所述MAC CE的传输的情况下，将所述MAC CE截短。
如果RAR中携带的UL grant能够满足MAC CE的传输、或者预配置的UL grant能够满足MAC CE的传输，则不需要截短MAC CE，可以直接传输该MAC CE。可选地，该MAC CE或截短后的MAC CE可以在随机接入过程的Msg3或MsgA中进行传输。
在一些实施方式中，上述MAC CE携带以下至少一项：
至少一个特定小区(SPCell，Special Cell)的波束失败恢复信息；
至少一个辅小区(SCell)的波束失败恢复信息。
其中，SPCell包括主小区(PCell，Primary Cell)和主辅小区(PSCell，Primary Secondary Cell)。
可选地，上述方法还包括：终端设备根据当前发生波束失败的小区情况确定所述MAC CE携带的内容。
在一些实施方式中，上述至少一个SPCell的波束失败恢复信息包括：
发生波束失败的SPCell的标识信息；
发生波束失败的SPCell的指示信息，所述指示信息用于指示所述发生波束失败的SPCell上是否有满足条件的波束；
发生波束失败的SPCell上满足条件的波束信息。
在一些实施方式中，至少一个SCell的波束失败恢复信息包括：
发生波束失败的SCell的标识信息；
发生波束失败的SCell的指示信息，所述指示信息用于指示所述发生波束失败的SCell上是否有满足条件的波束；
发生波束失败的SCell上满足条件的波束信息。
在一些实施方式中，上述MAC CE中允许截短的内容包括以下至少一项：
发生波束失败的SCell的标识信息；
发生波束失败的SPCell的指示信息，所述指示信息用于指示所述发生波束失败的SPCell上是否有满足条件的波束；
发生波束失败的SPCell上满足条件的波束信息；
发生波束失败的SCell的指示信息，所述指示信息用于指示所述发生波束失败的SCell上是否有满足条件的波束；
发生波束失败的SPCell上满足条件的波束信息。
可选地，上述标识信息包括服务小区索引(serving cell index)和/或服务小区是否发生波束失败的指示位信息。
具体地，上述标识信息可以是显式的serving cell index(5bit)，也可以是位图(bitmap)中的一个比特(bit)，比如一个服务小区对应的1bit置1时，代表该服务小区发生波束失败；置0时，代表该服务小区未发生波束失败。
可选地，上述波束信息包括CSI-RS/SSB索引。
以下举具体的实施例详细介绍。
实施例一：
本实施例中，UE在收到RAR时/后，触发或生成用于上报波束失败的MAC CE。UE可以基于RAR中携带的UL grant的大小触发/生成该MAC CE。
上述RAR响应于UE发送的由BFR触发的随机接入的Msg1、preamble或MsgA。
具体地，对于四步随机接入过程，UE发送由BFR触发的随机接入的Msg1/preamble，在收到Msg3中的RAR时/后，根据该RAR中携带的UL grant的大小触发或生成上报波束失败的MAC CE。
对于两步随机接入过程，UE发送由BFR触发的随机接入的MsgA，在收到MsgB中的RAR时/后，根据该RAR中携带的UL grant的大小触发或生成上报波束失败的MAC CE。其中，该MsgB中的RAR可以指回退RAR(fallback RAR)。或者，UE获取预配置的UL grant，根据该预配置的UL grant的大小触发或生成上报波束失败的MAC CE。预配置的UL grant可以表示网络配置的用于发送MsgA中PUSCH部分的UL grant。
上述随机接入包括CBRA和/或CFRA。
上述MAC CE可以携带至少一个SPCell的波束失败恢复信息；
上述MAC CE还可以携带至少一个SCell的波束失败恢复信息。
上述波束失败恢复信息包括一下至少之一：
发生波束失败的SPCell的标识信息，所述标识信息可以是显式的serving cell index(5bit)，也可以是bitmap中的一个bit，比如一个serving cell对应的1bit置1代表该serving cell发生波束失败；
发生波束失败的SCell的标识信息，所述标识信息可以是显式的serving cell index(5bit)，也可以是bitmap中的一个bit，比如一个serving cell对应的1bit置1代表该serving cell发生波束失败。
上述MAC CE还可以携带指示信息，用于指示是否有满足条件的波束。
上述MAC CE还可以携带满足条件的波束信息，如CSI-RS/SSB index。
实施例二：
本实施例中，UE发生波束失败时/后，触发或生成MAC CE，该MAC CE可以包括以下至少之一：
发生波束失败的SPCell的标识信息，所述标识信息可以是显式的serving cell index(5bit)，也可以是bitmap中的一个bit，比如一个serving cell对应的1bit置1，代表该serving cell发生波束失败。
发生波束失败的SCell的标识信息，所述标识信息可以是显式的serving cell index(5bit)，也可以是bitmap中的一个bit，比如一个serving cell对应的1bit置1，代表该serving cell发生波束失败。
指示信息，用于指示是否有满足条件的波束。
满足条件的波束信息，例如CSI-RS/SSB index。
UE判断上述MAC CE携带内容时，可以是基于当前发生波束失败的小区情况，或者只是基于该MAC CE是否要用Msg3携带。
当UE收到RAR时/后，需要再次判断所述该RAR中携带的UL grant是否可以满足该MAC CE的传输；
如果可以，则传输该MAC CE；
如果不能，则UE将上述MAC CE截短，包括截短以下内容至少之一：
发生波束失败的SCell的标识信息，所述标识信息可以是显式的serving cell index(5bit)，也可以是bitmap中的一个bit，比如一个serving cell对应的1bit置1，代表该serving cell发生波束失败；
发生波束失败的SPCell的指示信息，用于指示该SPCell上是否有满足条件的波束；
发生波束失败的SPCELL上满足条件的波束信息，例如CSI-RS/SSB  index；
发生波束失败的SCell的指示信息，用于指示该SCell上是否有满足条件的波束；
发生波束失败的SCELL上满足条件的波束信息，例如CSI-RS/SSB index。
具体地，UE发生波束失败时/后，触发或生成用于上报波束失败的MAC CE。对于四步随机接入过程，UE发送随机接入的Msg1/preamble，在收到Msg3中的RAR时/后，根据该RAR中携带的UL grant的大小判断该UL grant是否能够满足MAC CE的传输；如果能够满足，则在Msg3中传输该MAC CE；如果不能满足，则将该MAC CE截短，之后在Msg3传输截短后的MAC CE。
对于两步随机接入过程，UE发送随机接入的MsgA，在收到MsgB中的RAR时/后，根据该RAR中携带的UL grant的大小判断该UL grant是否能够满足MAC CE的传输；如果能够满足，则发送该MAC CE；如果不能满足，则将该MAC CE截短，之后发送截短后的MAC CE。其中，该MsgB中的RAR可以指回退RAR(fallback RAR)。或者，UE获取预配置的UL grant，根据该预配置的UL grant的大小判断是否能够满足MAC CE的传输；如果能够满足，则发送该MAC CE；如果不能满足，则将该MAC CE截短，之后在MsgA中传输截短后的MAC CE。预配置的UL grant可以表示网络配置的用于发送MsgA中PUSCH部分的UL grant。
可见，采用本申请实施例，UE可以基于RAR所配置的资源大小生成并发送BFR MAC CE，或者在需要时对已经生成的BFR MAC CE进行截短，从而避免由于MAC CE大小不合适而导致无法传输该MAC CE的情况。
本申请实施例还提出一种终端设备，图5是根据本申请实施例的终端设备500结构示意图，包括：
发送模块510，用于根据随机接入过程中可用的上行资源的大小，发 送用于上报波束失败的MAC CE。
在一些实施方式中，随机接入过程中可用的上行资源包括以下至少一项：
随机接入的Msg2中的RAR携带的UL grant；
随机接入的MsgB中的RAR携带的UL grant；
预配置的UL grant。
可选地，该MsgB中的RAR可以指回退RAR(fallback RAR)。
可选地，预配置的UL grant表示网络配置的用于发送MsgA中PUSCH部分的UL grant。
在一些实施方式中，如图6所示，上述终端设备还包括：
第一生成模块620，用于接收Msg2/MsgB中的RAR，基于所述RAR中携带的UL grant的大小触发/生成所述MAC CE；或者，基于预配置的UL grant的大小触发/生成所述MAC CE。
可选地，上述RAR响应于所述终端设备发送的由波束失败恢复过程触发的随机接入的Msg1、MsgA或前导码。
在一些实施方式中，如图6所示，上述终端设备还包括：
第二生成模块630，用于确定发生波束失败，触发/生成用于上报波束失败的MAC CE。
截短模块640，用于Msg2/MsgB中的RAR，在所述RAR中携带的UL grant不能满足所述MAC CE的传输的情况下，将所述MAC CE截短；或者，在预配置的UL grant不能满足所述MAC CE的传输的情况下，将所述MAC CE截短。
在一些实施方式中，上述MAC CE携带以下至少一项：
至少一个特定小区SPCell的波束失败恢复信息；
至少一个辅小区SCell的波束失败恢复信息。
在一些实施方式中，如图6所示，上述终端设备还包括：
确定模块650，用于根据当前发生波束失败的小区情况确定所述MAC  CE携带的内容。
可选地，上述至少一个SPCell的波束失败恢复信息包括：
发生波束失败的SPCell的标识信息；
发生波束失败的SPCell的指示信息，所述指示信息用于指示所述发生波束失败的SPCell上是否有满足条件的波束；
发生波束失败的SPCell上满足条件的波束信息。
可选地，上述至少一个SCell的波束失败恢复信息包括：
发生波束失败的SCell的标识信息；
发生波束失败的SCell的指示信息，所述指示信息用于指示所述发生波束失败的SCell上是否有满足条件的波束；
发生波束失败的SCell上满足条件的波束信息。
可选地，上述MAC CE中允许截短的内容包括以下至少一项：
发生波束失败的SCell的标识信息；
发生波束失败的SPCell的指示信息，所述指示信息用于指示所述发生波束失败的SPCell上是否有满足条件的波束；
发生波束失败的SPCell上满足条件的波束信息；
发生波束失败的SCell的指示信息，所述指示信息用于指示所述发生波束失败的SCell上是否有满足条件的波束；
发生波束失败的SPCell上满足条件的波束信息。
在一些实施方式中，上述标识信息包括服务小区索引和/或服务小区是否发生波束失败的指示位信息。
可选地，上述波束信息包括CSI-RS/SSB索引。
在一些实施方式中，上述随机接入过程包括竞争随机接入和/或非竞争随机接入。
应理解，根据本申请实施例的终端设备中的模块的上述及其他操作和/或功能分别为了实现图2的方法200、实现图3的方法300、实现图4的方法400中的终端设备的相应流程，为了简洁，在此不再赘述。
图7是根据本申请实施例的通信设备700示意性结构图。图7所示的通信设备700包括处理器710，处理器710可以从存储器中调用并运行计算机程序，以实现本申请实施例中的方法。
可选地，如图7所示，通信设备700还可以包括存储器720。其中，处理器710可以从存储器720中调用并运行计算机程序，以实现本申请实施例中的方法。
其中，存储器720可以是独立于处理器710的一个单独的器件，也可以集成在处理器710中。
可选地，如图7所示，通信设备700还可以包括收发器730，处理器710可以控制该收发器730与其他设备进行通信，具体地，可以向其他设备发送信息或数据，或接收其他设备发送的信息或数据。
其中，收发器730可以包括发射机和接收机。收发器730还可以进一步包括天线，天线的数量可以为一个或多个。
可选地，该通信设备700可为本申请实施例的终端设备，并且该终端设备700可以实现本申请实施例的各个方法中由第一终端设备实现的相应流程，为了简洁，在此不再赘述。
图8是根据本申请实施例的芯片800的示意性结构图。图8所示的芯片800包括处理器810，处理器810可以从存储器中调用并运行计算机程序，以实现本申请实施例中的方法。
可选地，如图8所示，芯片800还可以包括存储器820。其中，处理器810可以从存储器820中调用并运行计算机程序，以实现本申请实施例中的方法。
其中，存储器820可以是独立于处理器810的一个单独的器件，也可以集成在处理器810中。
可选地，该芯片800还可以包括输入接口830。其中，处理器810可以控制该输入接口830与其他设备或芯片进行通信，具体地，可以获取其他设备或芯片发送的信息或数据。
可选地，该芯片800还可以包括输出接口840。其中，处理器810可以控制该输出接口840与其他设备或芯片进行通信，具体地，可以向其他设备或芯片输出信息或数据。
可选地，该芯片可应用于本申请实施例中的终端设备，并且该芯片可以实现本申请实施例的各个方法中由终端设备实现的相应流程，为了简洁，在此不再赘述。
应理解，本申请实施例提到的芯片还可以称为系统级芯片，系统芯片，芯片系统或片上系统芯片等。
上述提及的处理器可以是通用处理器、数字信号处理器(digital signal processor，DSP)、现成可编程门阵列(field programmable gate array，FPGA)、专用集成电路(application specific integrated circuit，ASIC)或者其他可编程逻辑器件、晶体管逻辑器件、分立硬件组件等。其中，上述提到的通用处理器可以是微处理器或者也可以是任何常规的处理器等。
上述提及的存储器可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(read-only memory，ROM)、可编程只读存储器(programmable ROM，PROM)、可擦除可编程只读存储器(erasable PROM，EPROM)、电可擦除可编程只读存储器(electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(random access memory，RAM)。
应理解，上述存储器为示例性但不是限制性说明，例如，本申请实施例中的存储器还可以是静态随机存取存储器(static RAM，SRAM)、动态随机存取存储器(dynamic RAM，DRAM)、同步动态随机存取存储器(synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(synch link DRAM，SLDRAM)以及直接内存总线随机存取存储器(Direct Rambus  RAM，DR RAM)等等。也就是说，本申请实施例中的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。该计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行该计算机程序指令时，全部或部分地产生按照本申请实施例所述的流程或功能。该计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。该计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，该计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(Digital Subscriber Line，DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。该计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。该可用介质可以是磁性介质，(例如，软盘、硬盘、磁带)、光介质(例如，DVD)、或者半导体介质(例如固态硬盘(Solid State Disk，SSD))等。
应理解，在本申请的各种实施例中，上述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本申请实施例的实施过程构成任何限定。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
以上所述仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以该权利要求的保护范围为准。

Claims (33)

  1. 一种媒体访问控制层控制元素发送方法，包括：
    终端设备根据随机接入过程中可用的上行资源的大小，发送用于上报波束失败的媒体访问控制层MAC控制元素CE。
  2. 根据权利要求1所述的方法，所述随机接入过程中可用的上行资源包括以下至少一项：
    随机接入的第二步消息Msg2中的随机接入响应RAR携带的上行授权UL grant；
    随机接入的MsgB中的RAR携带的UL grant；
    预配置的UL grant。
  3. 根据权利要求1或2所述的方法，所述发送之前，还包括：
    所述终端设备接收Msg2/MsgB中的RAR，基于所述RAR中携带的UL grant的大小触发/生成所述MAC CE；或者，
    所述终端设备基于预配置的UL grant的大小触发/生成所述MAC CE。
  4. 根据权利要求2或3所述的方法，其中，所述RAR响应于所述终端设备发送的由波束失败恢复过程触发的随机接入的Msg1、MsgA或前导码。
  5. 根据权利要求1或2所述的方法，所述发送之前，还包括：
    所述终端设备确定发生波束失败，触发/生成用于上报波束失败的MAC CE。
  6. 根据权利要求5所述的方法，还包括：
    所述终端设备接收Msg2/MsgB中的RAR，在所述RAR中携带的UL grant不能满足所述MAC CE的传输的情况下，将所述MAC CE截短；
    或者，所述终端设备在预配置的UL grant不能满足所述MAC CE的传输的情况下，将所述MAC CE截短。
  7. 根据权利要求1至6任一所述的方法，其中，所述MAC CE携带以下至少一项：
    至少一个特定小区SPCell的波束失败恢复信息；
    至少一个辅小区SCell的波束失败恢复信息。
  8. 根据权利要求7所述的方法，还包括：
    终端设备根据当前发生波束失败的小区情况确定所述MAC CE携带的内容。
  9. 根据权利要求7或8所述的方法，其中，所述至少一个SPCell的波束失败恢复信息包括：
    发生波束失败的SPCell的标识信息；
    发生波束失败的SPCell的指示信息，所述指示信息用于指示所述发生波束失败的SPCell上是否有满足条件的波束；
    发生波束失败的SPCell上满足条件的波束信息。
  10. 根据权利要求7至9任一所述的方法，其中，所述至少一个SCell的波束失败恢复信息包括：
    发生波束失败的SCell的标识信息；
    发生波束失败的SCell的指示信息，所述指示信息用于指示所述发生波束失败的SCell上是否有满足条件的波束；
    发生波束失败的SCell上满足条件的波束信息。
  11. 根据权利要求7至10任一所述的方法，其中，所述MAC CE中允许截短的内容包括以下至少一项：
    发生波束失败的SCell的标识信息；
    发生波束失败的SPCell的指示信息，所述指示信息用于指示所述发生波束失败的SPCell上是否有满足条件的波束；
    发生波束失败的SPCell上满足条件的波束信息；
    发生波束失败的SCell的指示信息，所述指示信息用于指示所述发生波束失败的SCell上是否有满足条件的波束；
    发生波束失败的SPCell上满足条件的波束信息。
  12. 根据权利要求9至11任一所述的方法，其中，所述标识信息包括 服务小区索引和/或服务小区是否发生波束失败的指示位信息。
  13. 根据权利要求9至12任一所述的方法，其中，所述波束信息包括信道状态信息CSI-参考信号RS/同步信号块SSB索引。
  14. 根据权利要求1至13任一所述的方法，其中，所述随机接入过程包括竞争随机接入和/或非竞争随机接入。
  15. 一种终端设备，包括：
    发送模块，用于根据随机接入过程中可用的上行资源的大小，发送用于上报波束失败的MAC CE。
  16. 根据权利要求15所述的终端设备，所述随机接入过程中可用的上行资源包括以下至少一项：
    随机接入的Msg2中的RAR携带的UL grant；
    随机接入的MsgB中的RAR携带的UL grant；
    预配置的UL grant。
  17. 根据权利要求15或16所述的终端设备，还包括：
    第一生成模块，用于接收Msg2/MsgB中的RAR，基于所述RAR中携带的UL grant的大小触发/生成所述MAC CE；或者，基于预配置的UL grant的大小触发/生成所述MAC CE。
  18. 根据权利要求16或17所述的终端设备，其中，所述RAR响应于所述终端设备发送的由波束失败恢复过程触发的随机接入的Msg1、MsgA或前导码。
  19. 根据权利要求15或16所述的终端设备，还包括：
    第二生成模块，用于确定发生波束失败，触发/生成用于上报波束失败的MAC CE。
  20. 根据权利要求19所述的终端设备，还包括：
    截短模块，用于Msg2/MsgB中的RAR，在所述RAR中携带的UL grant不能满足所述MAC CE的传输的情况下，将所述MAC CE截短；或者，在预配置的UL grant不能满足所述MAC CE的传输的情况下，将所述MAC  CE截短。
  21. 根据权利要求15至20任一所述的终端设备，其中，所述MAC CE携带以下至少一项：
    至少一个特定小区SPCell的波束失败恢复信息；
    至少一个辅小区SCell的波束失败恢复信息。
  22. 根据权利要求21所述的终端设备，还包括：
    确定模块，用于根据当前发生波束失败的小区情况确定所述MAC CE携带的内容。
  23. 根据权利要求21或22所述的终端设备，其中，所述至少一个SPCell的波束失败恢复信息包括：
    发生波束失败的SPCell的标识信息；
    发生波束失败的SPCell的指示信息，所述指示信息用于指示所述发生波束失败的SPCell上是否有满足条件的波束；
    发生波束失败的SPCell上满足条件的波束信息。
  24. 根据权利要求21至23任一所述的终端设备，其中，所述至少一个SCell的波束失败恢复信息包括：
    发生波束失败的SCell的标识信息；
    发生波束失败的SCell的指示信息，所述指示信息用于指示所述发生波束失败的SCell上是否有满足条件的波束；
    发生波束失败的SCell上满足条件的波束信息。
  25. 根据权利要求21至24任一所述的终端设备，其中，所述MAC CE中允许截短的内容包括以下至少一项：
    发生波束失败的SCell的标识信息；
    发生波束失败的SPCell的指示信息，所述指示信息用于指示所述发生波束失败的SPCell上是否有满足条件的波束；
    发生波束失败的SPCell上满足条件的波束信息；
    发生波束失败的SCell的指示信息，所述指示信息用于指示所述发生 波束失败的SCell上是否有满足条件的波束；
    发生波束失败的SPCell上满足条件的波束信息。
  26. 根据权利要求23至25任一所述的终端设备，其中，所述标识信息包括服务小区索引和/或服务小区是否发生波束失败的指示位信息。
  27. 根据权利要求23至26任一所述的终端设备，其中，所述波束信息包括信道状态信息CSI-参考信号RS/同步信号块SSB索引。
  28. 根据权利要求15至27任一所述的终端设备，其中，所述随机接入过程包括竞争随机接入和/或非竞争随机接入。
  29. 一种终端设备，包括：处理器和存储器，该存储器用于存储计算机程序，所述处理器用于调用并运行所述存储器中存储的计算机程序，执行如权利要求1至14中任一项所述的方法。
  30. 一种芯片，包括：处理器，用于从存储器中调用并运行计算机程序，使得安装有所述芯片的设备执行如权利要求1至14中任一项所述的方法。
  31. 一种计算机可读存储介质，用于存储计算机程序，所述计算机程序使得计算机执行如权利要求1至14中任一项所述的方法。
  32. 一种计算机程序产品，包括计算机程序指令，该计算机程序指令使得计算机执行如权利要求1至14中任一项所述的方法。
  33. 一种计算机程序，所述计算机程序使得计算机执行如权利要求1至14中任一项所述的方法。
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