WO2024061165A1 - Procédé et appareil de communication - Google Patents

Procédé et appareil de communication Download PDF

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Publication number
WO2024061165A1
WO2024061165A1 PCT/CN2023/119417 CN2023119417W WO2024061165A1 WO 2024061165 A1 WO2024061165 A1 WO 2024061165A1 CN 2023119417 W CN2023119417 W CN 2023119417W WO 2024061165 A1 WO2024061165 A1 WO 2024061165A1
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WO
WIPO (PCT)
Prior art keywords
cell
indication information
neighboring
information
terminal device
Prior art date
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PCT/CN2023/119417
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English (en)
Chinese (zh)
Inventor
邓云
Original Assignee
展讯通信（上海）有限公司
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Publication of WO2024061165A1 publication Critical patent/WO2024061165A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24—Cell structures
    • H04W16/28—Cell structures using beam steering
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information

Definitions

  • the present application relates to the field of communication technology, and in particular, to a communication method and communication device.
  • the new radio (new radio, NR) system introduces the beam failure recovery (BFR) mechanism.
  • BFR beam failure recovery
  • the terminal device detects the failure of a beam in the serving cell, it immediately checks the availability of other beams in the serving cell. If there is no available beam in the serving cell, it continues to wait, which extremely affects communication efficiency and communication quality. .
  • Embodiments of the present application provide a communication method and communication device, which can select a beam with a relatively good signal quality for terminal equipment to access a cell, thereby improving communication efficiency and communication quality.
  • an embodiment of the present application provides a communication method, the method comprising:
  • the first cell When it is detected that a beam failure occurs in the first cell, send first indication information or access a first neighboring cell of the first cell, where the first neighboring cell is a neighboring cell with an available beam;
  • the first indication information is used to indicate at least one cell having an available beam, where the at least one cell includes the first cell and/or at least one neighboring cell of the first cell;
  • the available beams are beams whose signal quality is greater than or equal to the threshold value
  • the first indication information may be used to indicate the first cell and/or at least one neighbor of the first cell that has an available beam.
  • Cell which facilitates network equipment to select a cell with better beam signal quality (which can be the first cell or a neighboring cell) for terminal equipment to access, thereby improving communication efficiency and ensuring communication quality.
  • the terminal device can also directly select a neighboring cell with available beams to access, without having to wait for the beam recovery of the serving cell, thereby improving communication efficiency and ensuring communication quality.
  • the first indication information is also used to indicate beam information of available beams of each cell in the at least one cell.
  • the first indication information further indicates the beam information of the available beams of each cell in at least one cell with available beams, thereby providing a reference for the network device to select a cell and facilitating the selection of a beam with better signal quality and/or available beams. Access to a larger number of cells ensures communication quality.
  • the beam information of the available beams of each cell includes at least one of the following: the beam identifier of the available beams of each cell, the signal quality measurement result of the available beams of each cell, The ranking information of the signal quality measurement results of the available beams of each cell.
  • the terminal device reports specific beam information to the network device, which facilitates the network device to select a cell with relatively good beam signal quality for the terminal device to access based on the beam information.
  • the first indication information is carried in the beam failure recovery BFR media access control MAC control element CE.
  • carrying the first indication information in the BFR MAC CE can avoid the signaling overhead caused by separately transmitting the first indication information.
  • sending the first indication information includes:
  • random access is initiated on the random access channel opportunity RO resource corresponding to the available beam of the first cell, during the random access process or in the The first indication information is sent after the random access is completed.
  • the signaling overhead caused by separately transmitting the first indication information can be avoided, and is consistent with the current situation.
  • Sending the first indication information after the random access is completed can ensure the success rate of sending the first indication information.
  • the first cell is a primary cell in a primary cell group; and the sending of the first indication information includes:
  • the first indication information is sent through the secondary cells in the primary cell group. This method can satisfy the transmission of the first indication information in the carrier aggregation scenario;
  • the transmission resources are used to send the first indication information.
  • This method can fully utilize the available transmission resources of the uplink carrier;
  • the first indication information is sent to the secondary network device. This method can satisfy the transmission of the first indication information in a dual connectivity scenario.
  • the first cell is a primary and secondary cell in a secondary cell group; and the sending of the first indication information includes:
  • the transmission of the first indication information in the dual connectivity scenario can be satisfied, and beam failure recovery when the primary and secondary cell beams fail in the dual connectivity scenario.
  • the method further includes:
  • Receive a handover command including second indication information, the second indication information being used to instruct handover to the target cell in the at least one neighboring cell;
  • the network device can instruct the terminal device to access the neighboring cell, thereby restoring the communication of the terminal device as soon as possible and avoiding the problem of low communication efficiency caused by continuing to wait in the first cell.
  • the handover command further includes third indication information, the third indication information being used to indicate whether to retain the configuration information of the first cell and/or the configuration information of the at least one neighboring cell. Configuration information of other neighboring cells except the target cell;
  • the method also includes:
  • the configuration information of the first cell and/or the configuration information of other neighboring cells among the at least one neighboring cell except the target cell is processed.
  • the network device can further indicate whether to retain the configuration information of the first cell and/or the configuration information of other neighboring cells through the third indication information, thereby indirectly instructing the terminal device to subsequently adopt low-layer handover or RRC handover, which facilitates the network device to Control the switching mode of the terminal device.
  • the configuration information includes at least one of the following: a reference signal to be measured, channel state information to be reported, and channel resource information for reporting the channel state information.
  • the access to the first neighboring cell of the first cell includes:
  • Random access is initiated on the RO resource corresponding to the available beam of the first neighboring cell to access the first neighboring cell.
  • random access is performed on the RO resources corresponding to the available beams of the first neighboring cell to improve access efficiency, thereby improving communication efficiency.
  • the identification of the terminal device and/or the fourth indication information are sent to the network device through the random access process
  • the fourth indication information is used to indicate the beam information of available beams of the first neighboring cell and/or the beam information of at least one neighboring cell of the first cell except the accessed first neighboring cell. Beam information of available beams of other neighboring cells.
  • the beam information of the available beams of the first neighboring cell and/or the beam information of the available beams of other neighboring cells is reported to the network device, providing a reference for the network device to subsequently use the beam or switch cells.
  • the neighboring cell is a candidate cell configured by the network device for low-layer handover
  • the low-layer handover is a handover triggered by signaling at the physical layer or MAC layer.
  • the candidate cells for low-layer handover configured by the network device can be fully utilized to determine neighboring cells with available beams, and additional configuration of candidate cells can be avoided.
  • embodiments of the present application provide a communication method, which method includes:
  • the first indication information is used to indicate at least one cell having an available beam, where the at least one cell includes a first cell and/or at least one neighboring cell of the first cell, where the first cell is a cell where a beam failure occurs, and where the available beam is a beam having a signal quality greater than or equal to a threshold value;
  • the terminal equipment continues to access the first cell or access the target cell in the at least one neighboring cell.
  • the first indication information may be used to indicate the first cell and/or at least one neighbor of the first cell that has an available beam.
  • Cell which facilitates network equipment to select a cell with better beam signal quality (which can be the first cell or a neighboring cell) for terminal equipment to access, thereby improving communication efficiency and ensuring communication quality.
  • the neighboring cell is a candidate cell for low-layer handover
  • the low-layer handover is a handover triggered by signaling at the physical layer or MAC layer.
  • the method further includes:
  • a handover command is sent, where the handover command includes second indication information, and the second indication information is used to instruct handover to the at least one neighboring cell.
  • Target neighborhood When it is determined that the terminal equipment has accessed the target cell, a handover command is sent, where the handover command includes second indication information, and the second indication information is used to instruct handover to the at least one neighboring cell. Target neighborhood.
  • the handover command further includes third indication information, the third indication information being used to indicate whether to retain the configuration information of the first cell and/or the configuration information of the at least one neighboring cell. Configuration information of other neighboring cells except the target cell.
  • the configuration information includes at least one of the following: reference signals that need to be measured, channel status information that needs to be reported, and channel resources for reporting channel status information.
  • embodiments of the present application provide a communication method, which method includes:
  • the first cell is a cell where beam failure occurs
  • the first neighboring cell is a neighboring cell with an available beam
  • the available beam It is a beam whose signal quality is greater than or equal to the threshold value
  • the terminal device can directly select a neighboring cell with an available beam to access, without continuing to wait for the beam recovery of the serving cell, thereby improving communication efficiency and ensuring communication quality.
  • the determining that the terminal equipment switches from the first cell to the first neighboring cell of the first cell includes:
  • the terminal device If the identification of the terminal device is received during the random access process of the first neighboring cell, it is determined that the terminal device is switched from the first cell to the first neighboring cell.
  • the identity of the terminal device is carried in MSG3;
  • the identity of the terminal device is carried in the MSGA.
  • communicating with the terminal device through the first neighboring cell includes:
  • Candidate cell information is sent to the terminal device through the first neighboring cell, where the candidate cell information is used to indicate a candidate cell associated with the first neighboring cell for low-layer handover, and/or for low-layer handover. configuration information of the candidate cell, and the lower layer switches to pass Handover triggered by physical layer or MAC layer signaling.
  • the configuration information includes at least one of the following: reference signals that need to be measured, channel status information that needs to be reported, and channel resources for reporting channel status information.
  • embodiments of the present application provide a communication method, which method includes:
  • the handover command includes second indication information and third indication information.
  • the second indication information is used to instruct handover to a target cell in at least one neighboring cell of the first cell;
  • the third indication information is used Instructing whether to retain the configuration information of the first cell and/or the configuration information of other neighboring cells in the at least one neighboring cell except the target cell;
  • the configuration information of the first cell and/or the configuration information of other neighboring cells in the at least one neighboring cell except the target cell are processed.
  • the network device not only indicates the target cell to which the terminal device needs to switch, but also indicates whether to retain the configuration information of the first cell and/or the configuration information of other neighboring cells, thereby indirectly controlling the subsequent handover method of the terminal device. instruct.
  • the configuration information includes at least one of the following: reference signals that need to be measured, channel status information that needs to be reported, and channel resources for reporting channel status information.
  • the at least one neighboring cell is a candidate cell configured by the network device for low-layer handover, and the low-layer handover is a handover triggered by physical layer or MAC layer signaling.
  • embodiments of the present application provide a communication method, which method includes:
  • the terminal equipment switches from the first cell to a target cell, where the target cell is a cell in at least one neighboring cell of the first cell;
  • the switching command includes second indication information and third indication information
  • the second indication information is used to indicate switching to the target cell
  • the third indication information is used to indicate whether to retain the first Configuration information of the cell and/or configuration information of other neighboring cells in the at least one neighboring cell except the target cell.
  • the configuration information includes at least one of the following: reference signals that need to be measured, channel status information that needs to be reported, and channel resources for reporting channel status information.
  • inventions of the present application provide a communication device.
  • the communication device includes a processor and a memory.
  • the processor and the memory are connected to each other.
  • the memory is used to store a computer program.
  • the computer program includes program instructions.
  • the processor is configured to Call the program instructions to perform the method described in the first aspect or any optional implementation manner of the first aspect, or to perform the method described in the second aspect or any optional implementation manner of the second aspect, Alternatively, perform the method as described in the third aspect or any optional implementation manner of the third aspect, or perform the method as described in the fourth aspect or any optional implementation manner of the fourth aspect, or perform as The method described in the fifth aspect or any optional implementation manner of the fifth aspect.
  • embodiments of the present application provide a chip.
  • the chip includes a processor and an interface.
  • the processor and the interface are coupled; the interface is used to connect Receive or output a signal, and the processor is used to execute code instructions to perform the method described in the first aspect or any optional implementation of the first aspect, or to perform the method described in the second aspect or any optional implementation of the second aspect.
  • the method described in the embodiment, or performing the method described in the third aspect or any optional embodiment of the third aspect, or performing the method described in the fourth aspect or any optional embodiment of the fourth aspect The method, or perform the method as described in the fifth aspect or any optional implementation manner of the fifth aspect.
  • embodiments of the present application provide a module device, characterized in that the module device includes a communication module, a power module, a storage module and a chip module, wherein: the power module is used for The module device provides electrical energy; the storage module is used to store data and/or instructions; the communication module communicates with external devices; the chip module is used to call the data and/or instructions stored in the storage module, combined with the communication module , perform the method described in the first aspect or any optional implementation manner of the first aspect, or perform the method described in the second aspect or any optional implementation manner of the second aspect, or perform the method described in the second aspect or any optional implementation manner of the second aspect.
  • embodiments of the present application provide a computer-readable storage medium.
  • the computer-readable storage medium stores a computer program.
  • the computer program includes program instructions.
  • Figure 1a is a schematic structural diagram of a communication system provided by an embodiment of the present application.
  • Figure 1b is a schematic structural diagram of another communication system provided by an embodiment of the present application.
  • Figure 1c is a schematic diagram of a low-layer switching provided by an embodiment of the present application.
  • Figure 2 is a schematic flow chart of a communication method provided by an embodiment of the present application.
  • Figure 3 is a schematic structural diagram of a BFR MAC CE provided by the embodiment of the present application.
  • FIG. 4 is a schematic flowchart of another communication method provided by an embodiment of the present application.
  • FIG. 5 is a schematic flowchart of yet another communication method provided by an embodiment of the present application.
  • Figure 6 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • Figure 7 is a schematic structural diagram of another communication device provided by an embodiment of the present application.
  • FIG8 is a schematic diagram of the structure of another communication device provided in an embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of a module device provided in an embodiment of the present application.
  • the character "/" indicates that the related objects are an or relationship.
  • A/B can mean A or B.
  • “And/or” describes the relationship between related objects, indicating that three relationships can exist.
  • a and/or B can mean: A exists alone, A and B exist simultaneously, and B exists alone.
  • At least one refers to one or more, and “multiple” refers to two or more.
  • at least one of the following” or similar expressions thereof refers to any combination of these items, which may include any combination of a single item (items) or a plurality of items (items).
  • at least one item (item) of A, B or C can represent: A, B, C, A and B, A and C, B and C, or A, B and C.
  • each of A, B, and C can itself be an element, or it can be a set containing one or more elements.
  • transmission can include sending and/or receiving, which can be a noun or a verb.
  • the equals involved in the embodiments of this application can be used in conjunction with greater than, and are applicable to the technical solution adopted when it is greater than, and can also be used in conjunction with less than, and are applicable to the technical solution adopted when it is less than. It should be noted that when equal is used with greater than, it cannot be used with less than; when equal to is used with less than, it is not used with greater than.
  • the terminal device is a device with wireless transceiver function, which can be called a terminal (terminal), user equipment (UE), mobile station (MS), or mobile terminal (mobile terminal).
  • MT mobile terminal
  • access terminal equipment vehicle-mounted terminal equipment, industrial control terminal equipment, UE unit, UE station, mobile station, remote station, remote terminal equipment, mobile equipment, UE terminal equipment, wireless communication equipment, UE agent or UE device, etc.
  • Terminal equipment can be fixed or mobile.
  • the terminal device may support at least one wireless communication technology, such as long term evolution (long term evolution, LTE), new radio (new radio, NR), etc.
  • the terminal device may be a mobile phone (mobile phone), tablet computer (pad), desktop computer, notebook computer, all-in-one computer, vehicle-mounted terminal, virtual reality (VR) terminal device, augmented reality (AR) terminal Equipment, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical surgery, wireless terminals in smart grid, transportation security Wireless in (transportation safety) Terminal, wireless terminal in smart city (smart city), wireless terminal in smart home (smart home), cellular phone, cordless phone, session initiation protocol (SIP) phone, wireless local loop (wireless local loop) , WLL) station, personal digital assistant (personal digital assistant, PDA), handheld device with wireless communication function, computing device or other processing device connected to a wireless modem, wearable device, terminal device in future mobile communication network or in the future Terminal equipment in the evolved public land mobile network (PLMN), etc.
  • the terminal device may also be a device with transceiver functions, such as a chip system. Among them, the terminal device may also be a device with
  • the network device is a device that provides wireless communication functions for terminal devices, and may also be called access network equipment, radio access network (radio access network, RAN) equipment, etc.
  • the network device may support at least one wireless communication technology, such as LTE, NR, etc.
  • network equipment examples include but are not limited to: next generation base station (generation nodeB, gNB), evolved node B (evolved node B, eNB), wireless network control in the fifth generation mobile communication system (5th-generation, 5G) Radio network controller (RNC), node B (NB), base station controller (BSC), base transceiver station (BTS), home base station (e.g., home evolved node B, Or home node B (HNB), baseband unit (BBU), transmitting and receiving point (TRP), transmitting point (TP), mobile switching center, etc.
  • RNC Radio network controller
  • NB node B
  • BSC base station controller
  • BTS base transceiver station
  • HNB home evolved node B
  • BBU baseband unit
  • TRP transmitting and receiving point
  • TP transmitting point
  • mobile switching center etc.
  • the network device can also be a wireless controller, a centralized unit (CU), and/or a distributed unit (DU) in a cloud radio access network (CRAN) scenario, or the network device can They are relay stations, access points, vehicle-mounted equipment, terminal equipment, wearable devices, and network equipment in future mobile communications or network equipment in future evolved PLMNs.
  • the network device may also be a device with a wireless communication function for the terminal device, such as a chip system.
  • the chip system may include a chip and may also include other discrete devices.
  • Figure 1a is a schematic structural diagram of a communication system provided by an embodiment of the present application.
  • the communication system may include but is not limited to one or more network devices and one or more terminal devices.
  • Figure 1a takes a network device 101 and a terminal device 102 as an example.
  • the network device 101 in Figure 1a is a base station.
  • the terminal device 102 takes a mobile phone as an example.
  • the terminal device 102 can establish a wireless link with the network device 101 to communicate.
  • the communication system shown in Figure 1a includes but is not limited to network equipment and terminal equipment, and may also include other communication equipment.
  • the number and form of equipment shown in Figure 1a are for example only and do not constitute a limitation on the embodiments of the present application.
  • Figure 1b is a schematic structural diagram of another communication system provided by an embodiment of the present application.
  • the terminal device can be in a dual connection state, that is, the terminal device can maintain connections with the primary network device and the secondary network device at the same time.
  • the main network device and the auxiliary network device may use the same wireless communication technology, or may use different wireless communication technologies, which is not limited in this application.
  • one of the primary network device and the secondary network device may be a 4G base station, and the other may be a 5G base station, that is, Evolved Universal Terrestrial Radio Access and New Radio Dual Connection (EUTRA-NR Dual Connection, EN-DC).
  • the main network equipment and the auxiliary network equipment may all be 5G base stations, that is, multiple wireless technology dual connectivity (Multi-Radio Dual Connectivity, MR-DC) or NR-DC.
  • MCG Master Cell Group
  • SCG Secondary Cell Group
  • Pcell Primary cell
  • Scell Secondary Cell Group
  • MCG can include one PCell and 0, 1, or multiple SCells.
  • PSCell Primary Secondary cell
  • SCell Secondary Cell
  • SCG can include one PSCell and 0, 1, or multiple SCells.
  • Low-layer switching is a switching triggered by signaling at the Medium Access Control (MAC) layer or physical layer. This low-layer handover is relative to the handover triggered by signaling at the Radio Resource Control (RRC) layer. It can be understood that low-layer switching is just a proxy, and it can also be any other name, such as layer 1/layer 2 switching, L1/L2 switching, which is not limited in this application.
  • MAC Medium Access Control
  • RRC Radio Resource Control
  • the network will configure one or more candidate cells for the terminal device.
  • the one or more candidate cells may be neighboring cells of the serving cell serving the terminal device.
  • the network may also configure corresponding cells for each candidate cell.
  • Configuration information which includes but is not limited to at least one of the following: the candidate cell requires a reference signal measured by the terminal equipment, such as a channel state information reference signal (Channel State Information-Reference Signal, CSI-RS) or synchronization signal block, which requires a terminal
  • CSI-RS Channel State Information-Reference Signal
  • the channel status information reported by the device such as the reference signal receiving power (RSRP) of the candidate cell measured by the physical layer, the channel quality indication (Channel Quality Indication, CQI), and at least one other item.
  • RSRP reference signal receiving power
  • CQI Channel Quality Indication
  • the RSRP of the candidate cell measured by the physical layer may be called L1 RSRP. It is understandable that the network will also configure the terminal equipment to measure the serving cell and report the channel status information of the serving cell. It can be understood that in a handover triggered by signaling at the RRC layer, the network device does not need to configure candidate cells and the configuration information of each candidate cell to the terminal device in advance, and the terminal device does not need to report the L1RSRP or CQI corresponding to the candidate cell.
  • one or more candidate cells for network configuration may share configuration parameters of the Packet Data Convergence Protocol (PDCP) layer and/or the Radio Link Control layer (Radio Link Control, RLC), that is, During the low-layer handover process, the PDCP layer and/or RLC layer of the data radio bearer established by the terminal device may remain unchanged.
  • PDCP Packet Data Convergence Protocol
  • RLC Radio Link Control
  • the terminal device can perform physical layer measurements on the serving cell and candidate cells according to the configuration information, and report the L1 measurement results (which may also be called physical layer measurement results) of the serving cell and/or candidate cells to the serving cell.
  • the network After the network obtains the measurement results, it makes a decision whether to switch.
  • the terminal device may be triggered to switch to the candidate cell through MAC layer or physical layer signaling.
  • Network equipment can be implemented in different ways. It can be an independent node to realize all functions of the network equipment, or it can be divided into a control unit (Central Unit, CU) and a distributed unit (CU). Distributed Unit (DU) two parts. One CU can connect to multiple DUs. Usually the CU handles RRC signaling, while the DU handles layer 1 (physical layer) and layer 2 (MAC layer) signaling and data.
  • Figure 1c takes the network device including CU and DU as an example, where the serving DU can be understood as the DU corresponding to the serving cell, and the candidate DU can be understood as the DU corresponding to the candidate cell:
  • the configuration of the candidate cell based on low-layer inter-cell mobility is to configure the configuration information of the serving cell and the candidate cell for the UE.
  • the UE performs physical layer measurements based on the configuration information, obtains a low-layer measurement report, and reports it to the network.
  • the network makes serving cell change decisions based on measurement reports (optionally, it can be combined with low-layer measurement reports and layer 3 measurement reports). Specifically, it can trigger the execution of serving cell changes based on low-layer signaling.
  • the low-layer signaling can include the physical layer or the MAC layer. signaling.
  • the switching command used to trigger low-layer switching in this application may also be called a low-layer switching command, and the name is not limited in this application.
  • An NR cell is usually composed of multiple beams.
  • the network equipment achieves complete coverage in an area through beam scanning.
  • a cell can be composed of up to 64 beams.
  • the terminal equipment can identify different beams through the reference signals sent by the cell, that is, there is a corresponding relationship between the reference signals and the beams.
  • the signal quality of the beam can be determined by the signal quality of the corresponding reference signal. Taking the reference signal as the synchronization signal block SSB as an example, if there is a corresponding relationship between SSB1 and beam 1, and the terminal device detects that the signal quality (such as RSRP) of SSB1 sent by the network device is greater than or equal to the threshold value, it determines that the SSB1 The corresponding beam 1 is the available beam.
  • the signal quality such as RSRP
  • the reference signal can be a Synchronization Signal Block (SSB), that is, different beams are identified through different SSBs, and there is a corresponding relationship between SSBs and beams;
  • the reference signal can be CSI- RS, that is, different beams are identified through different CSI-RS, and there is a corresponding relationship between CSI-RS and beams.
  • SSB Synchronization Signal Block
  • CSI- RS that is, different beams are identified through different CSI-RS, and there is a corresponding relationship between CSI-RS and beams.
  • the reference signal such as SSB
  • RACH Occasion, RO random access channel opportunity
  • the beam can be a 1-to-1 mapping relationship or a many-to-1 mapping relationship.
  • the specific mapping relationship is configured by the serving cell. Such as configured through system messages.
  • the terminal device may initiate random access to the network device on the RO resource corresponding to the determined available beam, for example, send a message in the random access process on the RO resource.
  • FIG. 2 it is a schematic flow chart of an embodiment of the communication method provided by this application. As shown in Figure 2, the method may include but is not limited to the following steps:
  • the terminal device When detecting that beam failure occurs in the first cell, the terminal device sends first indication information, the first indication information being used to indicate at least one cell with available beams, and the at least one cell includes the first cell and /Or at least one neighboring cell of the first cell, the available beam is a beam whose signal quality is greater than or equal to a threshold value.
  • the network device receives the first indication information.
  • the first cell may refer to the serving cell PCell serving the terminal device.
  • the cell serving the terminal device may include the primary cell PCell and the secondary cell SCell, and the first cell may refer to the primary cell PCell.
  • the cells serving the terminal device may include the primary cell PCell and the secondary cell SCell in the MCG, and the primary and secondary cells PSCell and the secondary cell SCell in the SCG.
  • the first cell in the embodiment of the present application may refer to the primary cell PCell in the MCG, or the first cell may also refer to the primary and secondary cell PSCell in the SCG.
  • the first cell where beam failure occurs may also be the secondary cell SCell. If it is in a dual connectivity scenario, the first cell may be the secondary cell SCell in the SCG, or it may refer to the secondary cell SCell in the MCG, which is not limited in this application.
  • the network may configure a reference signal for detecting beam failure for the terminal device.
  • the terminal device detects that the signal quality of the reference signal of the first cell meets the beam failure condition, it is determined that beam failure occurs in the first cell.
  • the mechanism for determining beam failure may adopt an existing mechanism, which is not described in detail in this article.
  • the multiple network devices are respectively configured with reference signals for detecting beam failure.
  • the terminal device detects that the signal quality of the reference signal sent by a network device for detecting beam failure meets the beam failure condition, it is determined that beam failure occurs in the first cell.
  • the terminal device detects that the signal quality of the reference signals sent by all network devices in the plurality of network devices for detecting beam failure meets the beam failure condition, it is determined that the first cell has occurred. Beam failed.
  • the network device can be a transmission and reception point (Transmit/Receive Point, TRP).
  • the terminal device may send first indication information, and the first indication information may be used to indicate at least one cell with available beams, where the at least one cell may include the first cell and/or the first cell. at least one neighboring cell. If the at least one cell includes the first cell, it can be understood that although the first cell has a beam failure, it still has other available beams.
  • an available beam may refer to a beam whose signal quality is greater than or equal to the threshold value, where the signal quality of the beam can be measured by the signal quality of the reference signal.
  • the RSRP of the reference signal corresponding to the beam is greater than or equal to the threshold value. limit.
  • the number of available beams for one cell in the at least one cell may include one or more, which is not limited in this application.
  • the threshold value can be configured in advance by the first cell.
  • the first indication information may also be used to indicate beam information of available beams of each cell in at least one cell having available beams.
  • the beam information of the available beams of each cell may include but is not limited to at least one of the following: the beam identifier (Beam index) of the available beams of each cell, the signal quality measurement results of the available beams of each cell, the available beams of each cell.
  • Beam signal quality measurement result sorting information where the signal quality measurement result sorting information of the available beams of each cell may include sorting the available beams of each cell from high to low according to the signal quality measurement results, etc.
  • the first indication information may be carried in a Medium Access Control (Medium Access Control, MAC) control element (Control Element, CE). As shown in Figure 3, it is a schematic structural diagram of the BFR MAC CE.
  • the first indication information in the embodiment of this application can be It is carried in the cell identity, reference signal identity or beam identity fields.
  • the above-mentioned at least one neighboring cell may be a candidate cell configured by the network device for low-layer handover.
  • the at least one neighbor cell may refer to at least one candidate cell with available beams among one or more candidate cells configured by the network device.
  • the terminal since the network device configures the configuration information of one or more candidate cells for the terminal device, the terminal can measure the signal quality of the reference signal of each candidate cell according to the configuration information, thereby determining which beams of which candidate cells are Available beams.
  • the beam information of the candidate cells with available beams can also be indicated to the network device, so that the network device can select a cell for the terminal device to access. enter.
  • the terminal equipment may also report channel state information other than the beam information of at least one cell, which is not limited in this application.
  • the following is an example of a possible implementation method for the terminal device to send the first indication information:
  • the terminal device may initiate random access on the RO resource corresponding to the available beam of the first cell, and send the first indication information during the random access process or after the random access is completed. It is understandable that if the first cell has multiple available beams, the terminal device may select an available beam and initiate random access on the RO resource corresponding to the available beam. The terminal device may select an available beam with the best signal quality in the first cell, and initiate random access on the RO resource corresponding to the available beam with the best signal quality.
  • the first indication information may be sent in MSG3; if the random access process is two-step random access, then the first indication information may be sent in MSG3.
  • the first indication information is sent in MSGA.
  • the first indication information may be sent after the random access is completed.
  • the first indication information may be encapsulated in BFR MAC CE.
  • the terminal device may send the first indication information through the secondary cell SCell.
  • the terminal device may choose to send the first indication information to the network device through the secondary cell SCell.
  • the terminal device may choose to send the first indication information to the primary network device through the secondary cell SCell in the MCG.
  • the terminal device may choose to send the first indication information to the secondary network device through the secondary cell SCell in the SCG.
  • the terminal device can also use the transmission resources to send the first indication information.
  • the terminal device can also send the first indication information to the secondary network device, and the secondary network device sends the first indication information to the primary network device.
  • the device forwards the first indication information.
  • the terminal device can also send the first indication information to the primary network device, and the primary network device sends the first indication information to the secondary cell PSCell in the SCG.
  • the network device forwards the first indication information.
  • the terminal device selects the RO resource corresponding to the available beam in the first cell. Initiate random access, thereby sending the first indication information during the random access process or after the random access is completed. For another example, when there is no available beam in the first cell, the first indication information may be sent through the secondary cell SCell.
  • the network device determines, based on the first instruction information, that the terminal device continues to access the first cell or access the target cell in at least one neighboring cell.
  • the network device can be the primary network device and/or the secondary network device.
  • the network device receives the first indication information, and determines to continue accessing the first cell or switch access to a target cell in at least one neighboring cell according to at least one cell indicated in the first indication information.
  • the network device may determine to continue accessing the first cell or switch access to a target cell in at least one neighboring cell according to beam information of available beams of each cell in the at least one cell.
  • the network device may determine to continue accessing the first cell or to switch to the target cell based on the signal quality and/or the number of available beams of each cell in the at least one cell.
  • the network device may select the cell corresponding to the beam with the best signal quality of the available beam as the access cell.
  • the first cell is cell 1
  • the two neighboring cells with available beams are cell 2 and cell 3 respectively
  • the available beam of cell 1 is beam 4
  • the available beam of cell 2 is beam 2
  • the available beam of cell 3 is beam 3 and beam 4. If the signal quality of beam 2 in cell 2 is the best, cell 2 can be used as the target cell.
  • the network device may select a cell with the largest number of available beams as the accessed cell.
  • cell 3 has the largest number of available beams, so cell 3 is used as the target cell. It can be understood that if cell 1 has the most available beams or the best signal quality, the terminal device can continue to be connected to cell 1, which is not limited in this application. It should be noted that the above-mentioned signal quality of available beams and the number of available beams can be used individually or in combination to determine the cell that the terminal device needs to access.
  • the network device may also first determine whether the first cell has an available beam, and if the first cell has an available beam, continue to access the first cell. This avoids the delay and signaling interaction caused by handover.
  • the target cell to be switched to can be understood as switching the primary cell PCell of the terminal equipment from the first cell to the target cell.
  • the terminal device is in a dual connectivity scenario, and if the first cell is the PCell in the MCG, switching to the target cell can be understood as switching the primary cell PCell in the MCG of the terminal device from the first cell to the target cell.
  • the first cell is the primary and secondary cell PSCell in the SCG
  • switching to the target cell can be understood as changing the primary and secondary cell PSCell in the SCG of the terminal device from the first cell to the target cell, that is, the primary and secondary cell change (PSCell change) ).
  • PSCell change the primary and secondary cell change
  • the network device sends a handover command, and the corresponding terminal device receives the handover command. make.
  • the terminal device switches to the target cell according to the handover command.
  • the handover command includes second instruction information
  • the second instruction information is used to instruct the terminal device to switch from the first cell to a target cell in at least one neighboring cell.
  • the terminal device may switch to the target cell according to the second instruction information in the switching command.
  • the handover command may further include third indication information, and the third indication information is used to indicate whether to retain the configuration information of the first cell and/or the configuration information of other neighboring cells in at least one neighboring cell except the target cell.
  • the configuration information may refer to the information configured by the network device for low-layer handover, for example, the configuration information may include but is not limited to at least one of the following: the reference signal to be measured, the channel state information to be reported, and the channel resource information reported by the channel state information (wherein, the channel resource information reported by the channel state information may refer to the channel resource information used for the channel state information reporting, such as physical uplink control channel resource information).
  • the terminal device can still use the switching method of the low-layer handover to perform cell switching. If the third indication information indicates that the configuration information of the first cell and/or the configuration information of other neighboring cells in at least one neighboring cell except the target cell is not retained, the terminal device needs to use the signaling triggered by the RRC layer to perform switching.
  • one bit may be used to indicate whether to retain the configuration information of the first cell and/or the configuration information of other neighboring cells. For example, if the bit is 1, it indicates that the configuration information of the first cell and/or the configuration information of other neighboring cells is retained. If the bit is 0, it indicates that the configuration information of the first cell and/or other neighboring cells is not retained. configuration information.
  • the network device can also indicate whether to retain the configuration information of at least one neighboring cell except the target cell in each cell, so that the terminal device only retains the configuration information of the cells adjacent to the target cell. , that is, taking the cell as the granularity to indicate whether to retain the configuration information.
  • the network device may instruct to retain the configuration information of neighbor cell 2 and neighbor cell 3 adjacent to the target cell, but not to retain the configuration information of neighbor cell 4.
  • the network device may only indicate the neighboring cells whose configuration information needs to be retained, and the configuration information of the neighboring cells that are not indicated will not be retained by default.
  • the terminal device processes the configuration information of the first cell and/or the configuration information of other neighboring cells in at least one neighboring cell except the target cell according to the third instruction information. For example, if the third indication information indicates that the configuration information of the first cell is not retained, the terminal device discards the configuration information of the first cell. For another example, if the third indication information indicates that the configuration information of other neighboring cells is not retained, the terminal device discards the configuration information of other neighboring cells.
  • the network device can also send the handover command to the corresponding terminal device through the secondary cell.
  • the terminal device is in a dual connectivity scenario, and if the first cell where beam failure occurs is the primary cell in the MCG, and the first indication information is sent to the primary network device through the secondary network device, then the The primary network device can send the switching command to the terminal device through the corresponding secondary network device. If the first cell where beam failure occurs is the primary and secondary cells in the SCG, and the first indication information is sent to the secondary network device through the primary network device, the secondary network device can switch the The exchange command is sent to the terminal device through the main network device. The switching command may be transmitted through the physical layer or MAC.
  • the network device sends fifth instruction information.
  • the fifth instruction information is used to instruct the terminal device to continue to access the first cell.
  • the terminal device continues to access the first cell according to the fifth instruction information.
  • the network device may indicate through fifth indication information.
  • the transmission method of the fifth indication information may refer to the transmission method of the handover command in the previous embodiment, or may use an implicit indication method. , for example, if the first cell continues to schedule the terminal equipment through downlink control signaling, it means continuing to access the first cell, or if the terminal equipment does not receive an explicit low-layer handover command or an RRC layer handover command, the terminal equipment will continue to access the third cell. A small area.
  • the network device may also indicate to the terminal device whether to retain the configuration information of at least one neighboring cell of the first cell, thereby indirectly instructing the terminal device. Subsequently, whether the low-layer switching method is used or the switching method triggered by RRC layer signaling is adopted.
  • FIG 4 it is a schematic flow chart of another embodiment of the communication method provided by this application. As shown in Figure 4, the method may include but is not limited to the following steps:
  • the terminal device accesses the first neighboring cell of the first cell.
  • the first neighboring cell is a neighboring cell with an available beam, and the available beam has a signal quality greater than or equal to the threshold. beam.
  • the first cell may refer to the serving cell PCell serving the terminal device.
  • the cell serving the terminal device may include the primary cell PCell and the secondary cell SCell, and the first cell may refer to the primary cell PCell.
  • the cells serving the terminal device may include the primary cell PCell and the secondary cell SCell in the MCG, and the primary and secondary cells PSCell and the secondary cell SCell in the SCG.
  • the first cell in the embodiment of this application may refer to the primary cell PCell in the MCG, or the first cell may also refer to the primary and secondary cell PSCell in the SCG.
  • the first cell where beam failure occurs may also be the secondary cell SCell. If it is a dual connectivity scenario, the first cell may be the secondary cell SCell in the SCG, or it may refer to the secondary cell SCell in the MCG, which is not limited in this application.
  • the network can configure a reference signal for detecting beam failure for the terminal device.
  • the terminal device detects that the signal quality of the reference signal of the first cell meets the beam failure condition, it determines that a beam failure occurs in the first cell. fail.
  • the terminal device may select a first neighbor cell for access from at least one neighbor cell having an available beam. For example, the cell corresponding to the beam with the best signal quality of the available beams may be selected, or the cell with the largest number of available beams may be selected, which is not limited by this application.
  • the first cell is the primary cell PCell
  • the first neighboring cell that the terminal device accesses can be understood as the PCell after handover.
  • the first cell is the primary and secondary cell PSCell
  • the first neighboring cell that the terminal device accesses can be understood as The primary and secondary cells PSCell after handover.
  • at least one of the above neighbors The cell may be a cell configured by the network device for low-layer handover.
  • the first neighbor cell is also a cell used for low-layer handover.
  • the terminal device may initiate a random access process on the RO resource corresponding to the available beam of the first neighboring cell to access the first neighboring cell. If the first neighbor cell has multiple available beams, one available beam may be selected for initiating random access.
  • the terminal device may send the identification of the terminal device to the network device through the random access process, so that the network device determines that the terminal device accesses the first neighboring cell.
  • the identity of the terminal device may include but is not limited to the Cell-Radio Network Temporary Identifier (C-RNTI) allocated by the terminal device in the first cell, because the first neighboring cell belongs to the candidate cell of the first cell. , so the network device can identify the terminal device through the C-RNTI of the terminal device in the first cell.
  • C-RNTI Cell-Radio Network Temporary Identifier
  • the identity of the terminal device may refer to the C-RNTI of the terminal device in the first neighboring cell.
  • the C-RNTI of a neighboring cell the C-RNTI of the terminal equipment changes during the low-layer handover process and is configured by the respective cell.
  • the terminal device may also send fourth indication information to the network device through a random access process, where the fourth indication information is used to indicate the beam information of the available beam of the first neighboring cell and/or the first Beam information of available beams of other neighboring cells in at least one neighboring cell of the cell except the accessed first neighboring cell.
  • Beam information may include but is not limited to beam identification, beam signal quality measurement results, etc.
  • the network device may determine whether to switch the terminal device to another cell according to the fourth indication information.
  • the terminal device identification and/or the fourth indication information may be sent to the network device via MSG3 in the four-step random access process, or may be sent to the network device via MSGA in the two-step random access process, which is not limited in this application.
  • the terminal device identification and/or the fourth indication information may be encapsulated in a BFR MAC CE for transmission or transmitted using other MAC CEs.
  • the network device determines that the terminal device switches from the first cell to the first neighboring cell of the first cell.
  • the network device communicates with the terminal device through the first neighboring cell.
  • the network device determines that the terminal device is switched from the first cell to the first neighboring cell.
  • the network device may communicate with the terminal device through the first neighbor cell. Specifically and optionally, the network device can configure relevant wireless parameters of the first neighboring cell for the terminal device. Further optionally, the network device may also send candidate cell configuration information to the terminal device through the first neighboring cell, where the candidate cell configuration information is used to indicate a candidate cell associated with the first neighboring cell for low-layer handover, and/or for Configuration information of candidate cells for low-layer handover.
  • the configuration information may include but is not limited to at least one of the following: reference signals that need to be measured, channel status information that needs to be reported, and channel resources for channel status information reporting.
  • the network device may determine whether to switch the terminal device to another device based on the beam information of the available beams of each cell indicated in the fourth indication information. community.
  • the network device may also indicate to the network device corresponding to the first cell that the terminal device has been switched, and notify the first cell to release the resources allocated to the terminal device in the first cell.
  • the terminal device when a beam failure occurs in the first cell, the terminal device indicates at least one cell with available beams through the first indication information.
  • the terminal device may access a first neighboring cell of the first cell that has an available beam.
  • the embodiment in Figure 2 and the embodiment in Figure 3 can be implemented individually or in combination.
  • the terminal device may choose to access the first neighboring cell when certain conditions are met. The condition may include but is not limited to at least one of the following: there is no secondary cell associated with the first cell; the first cell does not have available beams. wait.
  • the beam failure recovery in the embodiment of FIG. 2 or FIG. 3 is called enhanced beam failure recovery.
  • the enhanced beam failure recovery may be performed when the network side allows the terminal device to perform enhanced beam recovery, for example, Network device pre-configuration allows end devices to perform enhanced beam failure recovery. If the network side does not allow the terminal device to perform enhanced beam recovery, the terminal device can only use the original mechanism to recover after beam failure occurs in the primary cell. If it cannot recover and the terminal device finds that the wireless link has failed, it will trigger RRC reconstruction process.
  • the BFR MAC CE transmitted during the enhanced beam failure recovery process can be called enhanced BFR MAC CE.
  • the network device may not be able to accurately receive it, or the network device may not be able to process it in time.
  • the terminal The device finds that the wireless link failure conditions have been met, such as random access failure, or the RLC reaches the maximum number of retransmissions, etc., and the terminal device triggers the RRC reconstruction process.
  • the terminal device first performs cell selection (Cell selection), and may select the first neighbor cell of the first cell.
  • Cell selection cell selection
  • the first neighbor cell is a candidate cell configured by the network device for low-layer handover.
  • the terminal device does not continue the existing RRC reconstruction process, but initiates a random access process in the selected first neighboring cell, and reports its own identity during the random access process, such as through an RRC recovery request or other signaling.
  • the first neighboring cell can realize that the terminal device has accessed based on the identity of the terminal device, and can reconfigure some wireless parameters to achieve rapid recovery of data wireless bearer transmission and avoid long-term data transmission caused by the reconstruction process. Interrupt.
  • this is a schematic flow chart of another embodiment of the communication method provided by this application. As shown in Figure 5, the method may include but is not limited to the following steps:
  • the network device determines that the terminal device needs to be handed over from the first cell to the target cell.
  • the network device may determine to switch the terminal device from the first cell to the first cell based on the signal quality of the reference signal of the first cell measured by the terminal device and/or the signal quality of at least one neighboring cell of the first cell. target neighborhood.
  • the at least one neighboring cell may be a candidate cell for low-layer handover configured by the network device, and the network device may also configure the configuration information of each candidate cell for the terminal device.
  • the network device may determine handover from the first cell to the target cell based on indication information reported by the terminal device, where the indication information is used to indicate the first cell with available beams and/or at least one neighbor of the first cell. community. For example, the available waves of the target cell If the number of beams is the largest, it is determined to switch to the target cell. For this implementation, specific reference may be made to the description of the embodiment in FIG. 2 , which will not be described again here. It should be noted that in this implementation, at least one neighboring cell with available beams may be a candidate cell configured by the network device for low-layer handover.
  • the network device sends a switching command.
  • the switching command includes second indication information and third indication information.
  • the second indication information is used to indicate switching to a target cell in at least one neighboring cell of the first cell; the third indication information
  • the indication information is used to indicate whether to retain the configuration information of the first cell and/or the configuration information of other neighboring cells in the at least one neighboring cell except the target cell.
  • the handover command here refers to a low-layer handover command, such as a handover command transmitted through the MAC layer.
  • the handover command needs to indicate the target cell identity.
  • it can indicate the beam identity of the access target cell.
  • the terminal device switches from the first cell to the target cell according to the second instruction information.
  • the third instruction information process the configuration information of the first cell and/or the configuration information of other neighboring cells in at least one neighboring cell except the target cell.
  • the switching command may include second indication information, and the second indication information is used to instruct the terminal device to switch from the first cell to the target cell.
  • the terminal device may switch to the target cell according to the second instruction information in the switching command. If the handover command also includes the beam identifier for accessing the target cell, the terminal device accesses the target cell through the designated beam.
  • the handover command may also include third indication information, the third indication information being used to indicate whether to retain the configuration information of the first cell and/or the configuration of other neighboring cells in at least one neighboring cell except the target cell.
  • the at least one neighboring cell may be one or more candidate cells configured by the network device, or the at least one neighboring cell may be at least one cell with available beams among the one or more candidate cells configured by the network device, this application does not limited.
  • the configuration information may refer to information configured by the network device for low-layer handover.
  • the configuration information may include but is not limited to at least one of the following: reference signals that need to be measured, channel status information that needs to be reported, and channel status information reporting. channel resource information, etc.
  • the terminal device may still perform cell switching using a low-layer switching switching method. If the third indication information indicates that the configuration information of the first cell and/or the configuration information of other neighboring cells in at least one neighboring cell except the target cell is not retained, the terminal device needs to use signaling triggered by the RRC layer to perform handover subsequently. . It can be understood that, in order to save signaling, one bit may be used to indicate whether the configuration information of the first cell and/or the configuration information of other neighboring cells is included.
  • the network device can also indicate whether to retain the configuration information of at least one neighboring cell except the target cell in each cell, so that the terminal device only retains the configuration information of the cells adjacent to the target cell. , that is, taking the cell as the granularity to indicate whether to retain the configuration information.
  • the network device may instruct to retain the configuration information of neighbor cell 2 and neighbor cell 3 adjacent to the target cell, but not to retain the configuration information of neighbor cell 4.
  • the network device may only indicate the neighboring cells whose configuration information needs to be retained, and the configuration information of the neighboring cells that are not indicated will not be retained by default.
  • the terminal device processes the configuration information of the first cell and/or the configuration information of other neighboring cells in at least one neighboring cell except the target cell according to the third instruction information. For example, if the third indication information indicates that the configuration information of the first cell is not retained, the terminal device discards Configuration information of the first cell. For another example, if the third indication information indicates that the configuration information of other neighboring cells is not retained, the terminal device discards the configuration information of other neighboring cells.
  • each technical solution (or each embodiment) of the present application can be implemented independently or can also be implemented in combination based on certain intrinsic relationships. This application is not limited. And various terms and definitions between various embodiments may be referenced to each other. In each embodiment of the present application, different implementation methods can also be implemented in combination or independently.
  • FIG. 6 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • the device may be a terminal device or a device in the terminal device.
  • it may be a chip or chip module in the terminal device, or a device that can be used in conjunction with the terminal device.
  • the communication device 400 shown in FIG. 6 may include a transceiver unit 401 and a processing unit 402. in:
  • the transceiver unit 401 is configured to send first indication information or access a first neighboring cell of the first cell when a beam failure is detected in the first cell, where the first neighboring cell is a neighboring cell with an available beam;
  • the first indication information is used to indicate at least one cell with available beams, and the at least one cell includes the first cell and/or at least one neighboring cell of the first cell;
  • the available beams are beams whose signal quality is greater than or equal to the threshold value
  • the first indication information is also used to indicate beam information of available beams of each cell in the at least one cell.
  • the beam information of the available beams of each cell includes at least one of the following: the beam identification of the available beams of each cell, the signal quality measurement results of the available beams of each cell, the available beams of each cell. Beam's signal quality measurement result ranking information.
  • the first indication information is carried in the beam failure recovery BFR media access control MAC control element CE.
  • the transceiver unit 401 is specifically configured to initiate random access on the random access channel timing RO resource corresponding to the available beam of the first cell when it is determined that the first cell has an available beam.
  • the first indication information is sent during the random access process or after the random access is completed.
  • the first cell is the primary cell in the primary cell group
  • the transceiver unit 401 is specifically configured to send the first indication information through the secondary cell in the primary cell group;
  • the first cell is a primary and secondary cell in a secondary cell group
  • the transceiver unit 401 is specifically configured to send the first indication information through the secondary cells in the secondary cell group;
  • the transceiver unit 401 is further configured to receive a switching command, where the switching command includes second indication information, and the second indication information is used to indicate switching to the target cell in the at least one neighboring cell;
  • the processing unit 402 is configured to switch to the target cell according to the second indication information.
  • the handover command further includes third indication information, the third indication information is used to indicate whether to retain the configuration information of the first cell and/or the at least one neighboring cell except the target cell. Configuration information of other neighboring cells;
  • the processing unit 402 is further configured to process the configuration information of the first cell and/or the configuration information of other neighboring cells in the at least one neighboring cell except the target cell according to the third indication information.
  • the configuration information includes at least one of the following: reference signals that need to be measured, channel state information that needs to be reported, and channel resource information that needs to be reported.
  • the transceiver unit 401 is specifically configured to initiate random access on the RO resource corresponding to the available beam of the first neighboring cell to access the first neighboring cell.
  • the identification of the terminal device and/or the fourth indication information are sent to the network device through the random access process
  • the fourth indication information is used to indicate the beam information of available beams of the first neighboring cell and/or the beam information of at least one neighboring cell of the first cell except the accessed first neighboring cell. Beam information of available beams of other neighboring cells.
  • the neighboring cell is a candidate cell configured by the network device for low-layer handover
  • the low-layer handover is a handover triggered by signaling at the physical layer or MAC layer.
  • Figure 6 is reused.
  • Figure 6 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • the device may be a terminal device or a device in the terminal device.
  • it may be a chip or chip module in the terminal device, or a device that can be used in conjunction with the terminal device.
  • the communication device 400 shown in FIG. 6 may include a transceiver unit 401 and a processing unit 402. in:
  • the transceiver unit 401 is configured to receive a switching command, where the switching command includes second indication information and third indication information, where the second indication information is used to indicate switching to a target cell in at least one neighboring cell of the first cell;
  • the third indication information is used to indicate whether to retain the configuration information of the first cell and/or the configuration information of other neighboring cells in the at least one neighboring cell except the target cell;
  • the processing unit 402 is configured to switch from the first cell to the target cell according to the second instruction information; and, according to the third instruction information, configure the configuration information of the first cell and/or the The configuration information of other neighboring cells in the at least one neighboring cell except the target cell is processed.
  • the configuration information includes at least one of the following: reference signals that need to be measured, channel status information that needs to be reported, and channel resources for reporting channel status information.
  • the at least one neighboring cell is a candidate cell configured by the network device for low-layer handover, and the low-layer handover is through physical Handover triggered by management layer or MAC layer signaling.
  • FIG. 7 is a schematic structural diagram of another communication device provided by an embodiment of the present application.
  • the device may be a network device or a device in the network device.
  • it may be a chip or chip module in the network device, or a device that can be used in conjunction with the network device.
  • the communication device 500 shown in FIG. 7 may include a transceiver unit 501 and a processing unit 502. in:
  • the transceiver unit 501 is configured to receive first indication information, where the first indication information is used to indicate at least one cell having an available beam, where the at least one cell includes a first cell and/or at least one neighboring cell of the first cell, where the first cell is a cell where a beam failure occurs, and where the available beam is a beam having a signal quality greater than or equal to a threshold value;
  • the processing unit 502 is configured to determine, according to the first indication information, that the terminal device continues to access the first cell or access the target cell in the at least one neighboring cell.
  • the neighboring cell is a candidate cell for low-layer handover
  • the low-layer handover is a handover triggered by signaling at the physical layer or MAC layer.
  • the transceiver unit 501 is further configured to send a switching command, where the switching command includes second indication information, and the second indication information is used to indicate that the terminal equipment has accessed the target cell. Handover to a target cell in the at least one neighboring cell.
  • the handover command further includes third indication information, the third indication information is used to indicate whether to retain the configuration information of the first cell and/or the at least one neighboring cell except the target cell. Configuration information of other neighboring cells.
  • the configuration information includes at least one of the following: reference signals that need to be measured, channel status information that needs to be reported, and channel resources for reporting channel status information.
  • Figure 7 is reused.
  • Figure 7 is a schematic structural diagram of another communication device provided by an embodiment of the present application.
  • the device may be a network device or a device in the network device.
  • it may be a chip or chip module in the network device, or a device that can be used in conjunction with the network device.
  • the communication device 500 shown in FIG. 7 may include a transceiver unit 501 and a processing unit 502. in:
  • the processing unit 502 is configured to determine that the terminal equipment switches from the first cell to a first neighboring cell of the first cell, the first cell is a cell where beam failure occurs, and the first neighboring cell is a neighboring cell with available beams.
  • Cell the available beams are beams whose signal quality is greater than or equal to the threshold value;
  • Transceiver unit 501 configured to communicate with the terminal device through the first neighboring cell.
  • the processing unit 502 is specifically configured to determine that the terminal device is switched from the first cell to the first neighboring cell if the identifier of the terminal device is received during a random access process of the first neighboring cell.
  • the identity of the terminal device is carried in MSG3;
  • the identity of the terminal device is carried in the MSGA.
  • the transceiver unit 501 is specifically configured to send candidate cell information to the terminal device through the first neighboring cell, where the candidate cell information is used to indicate candidates for low-layer handover associated with the first neighboring cell. cell, and/or configuration information of the candidate cell for low-layer handover, where the low-layer handover is a handover triggered by physical layer or MAC layer signaling.
  • the configuration information includes at least one of the following: reference signals that need to be measured, channel status information that needs to be reported, and channel resources for reporting channel status information.
  • Figure 7 is reused.
  • Figure 7 is a schematic structural diagram of another communication device provided by an embodiment of the present application.
  • the device may be a network device or a device in the network device.
  • it may be a chip or chip module in the network device, or a device that can be used in conjunction with the network device.
  • the communication device 500 shown in FIG. 7 may include a transceiver unit 501 and a processing unit 502. in:
  • the processing unit 502 is configured to determine that the terminal equipment needs to be switched from the first cell to the target cell, where the target cell is a cell in at least one neighboring cell of the first cell;
  • Transceiver unit 501 configured to send a switching command, where the switching command includes second indication information and third indication information.
  • the second indication information is used to indicate switching to the target cell;
  • the third indication information is used to indicate Whether to retain the configuration information of the first cell and/or the configuration information of other neighboring cells in the at least one neighboring cell except the target cell.
  • the configuration information includes at least one of the following: reference signals that need to be measured, channel status information that needs to be reported, and channel resources for reporting channel status information.
  • FIG. 8 is a schematic structural diagram of another communication device provided by an embodiment of the present application, which is used to implement the functions of the terminal equipment in FIG. 2 , FIG. 4 and FIG. 5 .
  • the communication device 600 may be a terminal device or a device for a terminal device.
  • the device for the terminal device may be a chip system or a chip within the terminal device. Among them, the chip system can be composed of chips, or can also include chips and other discrete devices.
  • the communication device 600 is used to implement the functions of the network equipment in FIG. 2, FIG. 4, and FIG. 5.
  • the communication device may be a network device or a device for a network device.
  • the means for the network device may be a system-on-a-chip or chip within the network device.
  • the communication device 600 includes at least one processor 620, which is used to implement the data processing function of the terminal device or network device in the method provided by the embodiment of the present application.
  • the communication device 600 may also include a communication interface 610, which is used to implement the sending and receiving operations of the terminal device or the network device in the method provided by the embodiment of the present application.
  • the processor 620 may be a central processing unit (Central Processing Unit, CPU).
  • the processor may also be other general-purpose processors, digital signal processors (Digital Signal Processor, DSP), or application specific integrated circuits.
  • the communication interface 610 may be a transceiver, a circuit, a bus, a module, or other types of communication interfaces for communicating with other devices through a transmission medium.
  • the communication interface 610 is used for devices in the communication device 600 to communicate with other devices.
  • the processor 620 uses the communication interface 610 to send and receive data, and is used to implement the method described in Figure 2 or Figure 4 or Figure 5 in the above method embodiment.
  • Communication device 600 may also include at least one memory 630 for storing program instructions and/or data.
  • Memory 630 and processor 620 are coupled.
  • the coupling in the embodiment of this application is an indirect coupling or communication connection between devices, units or modules, which may be in electrical, mechanical or other forms, and is used for information interaction between devices, units or modules.
  • Processor 620 may cooperate with memory 630.
  • Processor 620 may execute program instructions stored in memory 630. At least one of the at least one memory may be included in the processor.
  • the processor 620 can read the software program in the memory 630, interpret and execute the instructions of the software program, and process the data of the software program.
  • the processor 620 performs baseband processing on the data to be sent, and then outputs the baseband signal to the radio frequency circuit (not shown in Figure 8).
  • the radio frequency circuit performs radio frequency processing on the baseband signal and transmits the radio frequency signal through the antenna to the electromagnetic wave. The form is sent out.
  • 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 620.
  • the processor 620 converts the baseband signal into data and processes the data. for processing.
  • the radio frequency circuit and antenna can be set up independently of the processor 620 that performs baseband processing.
  • the radio frequency circuit and antenna can be set up remotely and independently of the communication device. layout.
  • the embodiment of the present application does not limit the specific connection medium between the communication interface 610, the processor 620 and the memory 630.
  • the memory 630, the processor 620 and the communication interface 610 are connected through a bus 640 in Figure 8.
  • the bus is represented by a thick line in Figure 8.
  • the connection methods between other components are only schematically explained. , is not limited.
  • the bus can be divided into address bus, data bus, control bus, etc. For ease of presentation, only one thick line is used in Figure 8, but it does not mean that there is only one bus or one type of bus.
  • the communication interface 610 may output or receive a baseband signal.
  • the communication device 600 is specifically a terminal device, what the communication interface 610 outputs or receives may be a radio frequency signal.
  • the communication device can perform the relevant steps of the terminal device or the network device in the foregoing method embodiments. For details, please refer to the implementation provided by each of the above steps, which will not be described again here.
  • each module included in them can be implemented in the form of hardware such as circuits.
  • Different modules can be located in the same component (for example, a chip, circuit module, etc.) or in different components in the terminal.
  • at least part of the modules can be implemented in the form of a software program that runs on the processor integrated inside the terminal, and the remaining (if any) part of the module Blocks can be implemented in hardware such as circuits.
  • non-volatile memory may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory.
  • non-volatile memory can be read-only memory (ROM), programmable rom (PROM), erasable programmable read-only memory (erasable prom, EPROM), electrically removable memory.
  • EEPROM electrically programmable read-only memory
  • Volatile memory can be random access memory (RAM), which is used as an external cache.
  • RAM random access memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • SDRAM double data rate synchronous dynamic random access memory
  • double data rate SDRAM double data rate SDRAM
  • DDR SDRAM double data rate SDRAM
  • ESDRAM enhanced synchronous dynamic random access memory
  • Synchronously connect dynamic random access memory switchlink DRAM, SLDRAM
  • direct memory bus random access memory direct rambus RAM, DR RAM
  • the embodiment of the present application provides a chip.
  • the chip includes: a processor and a memory.
  • the number of processors can be one or more, and the number of memories can be one or more.
  • the processor can execute the communication method shown in FIG. 2 or FIG. 4 or FIG. 5, and the steps executed in the related implementation methods by reading instructions and data stored in the memory.
  • FIG. 9 is a schematic structural diagram of a module device provided by an embodiment of the present application.
  • the module device 700 can perform the relevant steps of the terminal device or network device in the aforementioned method embodiment.
  • the module device 700 includes: a communication module 701, a power module 702, a storage module 703 and a chip module 704.
  • the power module 702 is used to provide power for the module device;
  • the storage module 703 is used to store data and/or instructions;
  • the communication module 701 is used to communicate with external devices;
  • the chip module 704 is used to call the storage module
  • the data and/or instructions stored in 703, combined with the communication module 701, can execute the above-mentioned communication method shown in Figure 2 or Figure 4 or Figure 5, as well as the steps performed by related implementations.
  • An embodiment of the present application also provides a computer-readable storage medium.
  • the computer readable storage medium stores a computer program, and the computer program includes program instructions.
  • the electronic device executes the program instructions, the terminal device or network in the communication method shown in Figure 2 or Figure 4 or Figure 5 is implemented. The steps performed by the device.
  • the computer-readable storage medium may be an internal storage unit of the terminal device or network device described in any of the preceding embodiments, such as a hard disk or memory of the device.
  • the computer-readable storage medium may also be an external storage device of the terminal device or network device, such as a plug-in hard disk, a smart media card (SMC), or a secure digital device equipped on the device. , SD) card, flash card, etc.
  • the computer-readable storage medium may also include both an internal storage unit and an external storage device of the terminal device or network device.
  • the computer-readable storage medium is used to store the computer program and other programs and data required by the terminal device or network device.
  • the computer-readable storage medium may also be used to temporarily store information that has been output or is to be output. data.
  • the computer-readable storage medium may be any available medium that a computer can access, or a data storage device such as a server or a data center that contains one or more sets of available media.
  • the available media may be magnetic media (eg, floppy disk, hard disk, tape), optical media (eg, high-density digital video disc (DVD)), or semiconductor media.
  • the semiconductor medium may be a solid state drive.
  • each device and product described in the above embodiments may be software modules/units or hardware modules/units, or they may be partly software modules/units and partly hardware modules/units.
  • each module/unit included therein can be implemented in the form of hardware such as circuits, or at least some of the modules/units can be implemented in the form of a software program.
  • the software program Running on the processor integrated inside the chip, the remaining (if any) modules/units can be implemented using circuits and other hardware methods; for various devices and products applied to or integrated into the chip module, each module/unit included in it can They are all implemented in the form of hardware such as circuits.
  • Different modules/units can be located in the same component of the chip module (such as chips, circuit modules, etc.) or in different components. Alternatively, at least some modules/units can be implemented in the form of software programs.
  • the software program runs on the processor integrated inside the chip module, and the remaining (if any) modules/units can be implemented using circuits and other hardware methods; for each device and product that is applied to or integrated in the data collection node, it includes Each module/unit can be implemented in the form of hardware such as circuits.
  • Different modules/units can be located in the same component (for example, chip, circuit module, etc.) or in different components in the terminal, or at least some of the modules/units can use software programs.
  • This software program runs on the processor integrated inside the data acquisition node, and the remaining (if any) modules/units can be implemented using circuits and other hardware methods.
  • the above embodiments may be implemented in whole or in part by software, hardware, firmware or any other combination thereof.
  • the above embodiments may be implemented in whole or in part in the form of a computer program product.
  • the computer program product includes one or more computer instructions or computer programs.
  • the processes or functions described in the embodiments of the present application are generated in whole or in part.
  • 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, for example, the computer instructions may be transmitted from one website site, computer, server or data center to another website site, computer, server or data center by wired or wireless means.
  • the size of the sequence numbers of the above-mentioned processes does not mean the order of execution.
  • the execution order of each process should be determined by its functions and internal logic, and should not be used in the embodiments of the present application.
  • the implementation process constitutes any limitation.
  • the disclosed methods, devices and systems can be implemented in other ways.
  • the device embodiments described above are only illustrative; for example, the division of the units is only a logical function division, and there may be other division methods during actual implementation; for example, multiple units or components may be combined or can be integrated into another system, or some features can be ignored, or not implemented.
  • the coupling or direct coupling or communication connection between each other shown or discussed may be through some interfaces, and the indirect coupling or communication connection of the devices or units may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or they may be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in various embodiments of the present invention may be integrated into one processing unit, each unit may be physically included separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.
  • the above-mentioned integrated unit implemented in the form of a software functional unit can be stored in a computer-readable storage medium.
  • the above-mentioned software functional unit is stored in a storage medium and includes a number of instructions to cause a computer device (which can be a personal computer, a server, or a gateway node, etc.) to execute some steps of the method described in various embodiments of the present invention.
  • the program can be stored in a computer-readable storage medium.
  • the program can be stored in a computer-readable storage medium.
  • the process may include the processes of the embodiments of each of the above methods.
  • the storage medium can be a magnetic disk, an optical disk, a read-only memory (Read-Only Memory, ROM) or a random access memory (Random Access Memory, RAM), etc.

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

Abstract

La présente demande concerne un procédé et un appareil de communication. Le procédé de communication comprend : lorsqu'il est détecté qu'une défaillance de faisceau se produit dans une première cellule, l'envoi de premières informations d'indication ou l'accès à une première cellule voisine de la première cellule, la première cellule voisine étant une cellule voisine présentant un faisceau disponible ; les premières informations d'indication étant utilisées pour indiquer au moins une cellule présentant un faisceau disponible, et ladite au moins une cellule comprenant la première cellule et/ou au moins une cellule voisine de la première cellule ; et le faisceau disponible étant un faisceau présentant la qualité de signal supérieure ou égale à un seuil. La présente demande peut améliorer l'efficacité de communication et assurer la qualité de communication.
PCT/CN2023/119417 2022-09-21 2023-09-18 Procédé et appareil de communication WO2024061165A1 (fr)

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CN202211152093.0 2022-09-21

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CN110972143A (zh) * 2018-09-28 2020-04-07 华为技术有限公司 传输信息的方法和装置
CN112312423A (zh) * 2019-07-30 2021-02-02 华为技术有限公司 一种波束失败的处理方法及装置

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US20050176468A1 (en) * 2004-02-07 2005-08-11 Interdigital Technology Corporation Wireless communication method and apparatus for selecting and reselecting cells based on measurements performed using directional beams and an omni-directional beam pattern
WO2018084968A1 (fr) * 2016-11-04 2018-05-11 Intel IP Corporation Rapport de mesure dans un nouveau réseau de communication sans fil radio
US20190273583A1 (en) * 2016-12-20 2019-09-05 Telefonaktiebolaget Lm Ericsson (Publ) Managing Reference Signals in a Wireless Communication Network
CN110831041A (zh) * 2018-08-07 2020-02-21 维沃移动通信有限公司 小区波束失败处理方法、移动通信终端和网络侧设备
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CN112312423A (zh) * 2019-07-30 2021-02-02 华为技术有限公司 一种波束失败的处理方法及装置

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