WO2023108354A1 - 无线通信的方法、终端设备和网络设备 - Google Patents

无线通信的方法、终端设备和网络设备 Download PDF

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Publication number
WO2023108354A1
WO2023108354A1 PCT/CN2021/137505 CN2021137505W WO2023108354A1 WO 2023108354 A1 WO2023108354 A1 WO 2023108354A1 CN 2021137505 W CN2021137505 W CN 2021137505W WO 2023108354 A1 WO2023108354 A1 WO 2023108354A1
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Prior art keywords
handover
cell
target cell
measurement
terminal device
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PCT/CN2021/137505
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English (en)
French (fr)
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尤心
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Oppo广东移动通信有限公司
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Priority to PCT/CN2021/137505 priority Critical patent/WO2023108354A1/zh
Publication of WO2023108354A1 publication Critical patent/WO2023108354A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management

Definitions

  • the present application relates to the field of communication technologies, and more specifically, to a wireless communication method, terminal equipment, and network equipment.
  • the present application provides a wireless communication method, terminal equipment and network equipment, so as to reduce handover delay.
  • a wireless communication method including: a terminal device is handed over from a source cell to a target cell, the handover is a first handover, and the first handover is based on Layer 1/Layer 2 signaling or measurement triggering switch.
  • a wireless communication method including: a source cell sends a handover request to a target cell, the handover request is used to handover a terminal device from the source cell to the target cell, and the handover is a first Handover, where the first handover is triggered based on Layer 1/Layer 2 signaling or measurement.
  • a wireless communication method including: a target cell receives a handover request sent by a source cell, the handover request is used to handover a terminal device from the source cell to the target cell, and the handover is the second A handover, where the first handover is triggered based on Layer 1/Layer 2 signaling or measurement.
  • a terminal device including: a handover module, configured to handover from a source cell to a target cell, the handover is a first handover, and the first handover is based on Layer 1/Layer 2 signaling or measurement Triggered switch.
  • a network device is a network device to which a source cell belongs, and the network device includes: a first sending module, configured to send a handover request to a target cell, and the handover request is used to send a terminal The device is handed over from the source cell to the target cell, the handover is a first handover, and the first handover is a handover triggered based on Layer 1/Layer 2 signaling or measurement.
  • a network device is a network device to which a target cell belongs, and the network device includes: a receiving module, configured to receive a handover request sent by a source cell, and the handover request is used to switch the terminal device to Handover from the source cell to the target cell, the handover is a first handover, and the first handover is a handover triggered based on Layer 1/Layer 2 signaling or measurement.
  • a terminal device including a processor, a memory, and a communication interface, the memory is used to store one or more computer programs, and the processor is used to call the computer programs in the memory so that the terminal device Perform some or all of the steps in the method of the first aspect.
  • a network device including a processor, a memory, and a communication interface, the memory is used to store one or more computer programs, and the processor is used to call the computer programs in the memory to make the network device Perform some or all of the steps in the method of the second aspect or the third aspect.
  • an embodiment of the present application provides a communication system, where the system includes the above-mentioned terminal device and/or network device.
  • the system may further include other devices that interact with the terminal device or network device in the solutions provided by the embodiments of the present application.
  • the embodiment of the present application provides a computer-readable storage medium, where the computer-readable storage medium stores a computer program, and the computer program causes a terminal to perform some or all of the steps in the method of the first aspect above.
  • the embodiment of the present application provides a computer-readable storage medium, where the computer-readable storage medium stores a computer program, and the computer program enables the network device to perform the method in the second aspect or the third aspect above some or all of the steps.
  • the embodiment of the present application provides a computer program product, wherein the computer program product includes a non-transitory computer-readable storage medium storing a computer program, and the computer program is operable to enable the terminal to execute the above-mentioned Some or all of the steps in the method of the first aspect.
  • the computer program product can be a software installation package.
  • the embodiment of the present application provides a computer program product, wherein the computer program product includes a non-transitory computer-readable storage medium storing a computer program, and the computer program is operable to cause a network device to execute Part or all of the steps in the method of the second aspect or the third aspect above.
  • the computer program product can be a software installation package.
  • the embodiment of the present application provides a chip, the chip includes a memory and a processor, and the processor can call and run a computer program from the memory, so as to realize any one of the above first to third aspects Some or all of the steps described in the method.
  • the terminal device can perform the first handover triggered by layer 1/layer 2 signaling or measurement, so that the signaling overhead and the number of transmission layers of the protocol stack can be reduced, thereby reducing the handover delay.
  • FIG. 1 is an example diagram of a wireless communication system to which an embodiment of the present application can be applied.
  • FIG. 2 is a schematic diagram of a handover process based on an Xn interface provided by an embodiment of the present application.
  • FIG. 3 is a schematic diagram of a condition-triggered handover process provided by an embodiment of the present application.
  • FIG. 4 is a schematic flowchart of a wireless communication method provided by an embodiment of the present application.
  • FIG. 5 is a schematic flowchart of a wireless communication method provided by another embodiment of the present application.
  • FIG. 6 is a schematic flow chart of a wireless communication method provided in another embodiment of the present application.
  • FIG. 7 is a schematic flow chart of a wireless communication method provided in another embodiment of the present application.
  • FIG. 8 is a schematic flow chart of a wireless communication method provided in another embodiment of the present application.
  • FIG. 9 is a schematic structural block diagram of a terminal device provided by an embodiment of the present application.
  • Fig. 10 is a schematic structural block diagram of a network device provided by an embodiment of the present application.
  • Fig. 11 is a schematic structural block diagram of a network device provided by another embodiment of the present application.
  • Fig. 12 is a schematic structural diagram of the device provided by the embodiment of the present application.
  • FIG. 1 is a wireless communication system 100 to which the embodiment of the present application can be applied.
  • the wireless communication system 100 may include at least two network devices, such as the network device 110 and the network device 120 shown in FIG. 1 .
  • the wireless communication system 100 may further include at least one terminal device, such as the terminal device 130 shown in FIG. 1 . Wherein, the terminal device 130 may be mobile or fixed.
  • the network device 110 and the network device 120 may be devices communicating with the terminal device 130 .
  • the network device 110 and the network device 120 can provide communication coverage for a specific geographical area, and can communicate with the terminal device 130 located in the coverage area (cell).
  • Fig. 1 exemplarily shows two network devices and one terminal device, but this should not constitute any limitation to this application.
  • the wireless communication system 100 may include more network devices, and the coverage of each network device may include other numbers of terminal devices, which is not limited in this embodiment of the present application.
  • the wireless communication system 100 may further include one or more core network devices, which is not limited in this embodiment of the present application.
  • the core network equipment may include one or more of the following: an access and mobility management function (access and mobility management function, AMF) entity, a session management function (session management function, SMF) entity, a user plane function (user plane function, UPF) entities, etc.
  • An AMF entity may also be called an AMF network element or an AMF functional entity.
  • the AMF entity can be used to be responsible for access management and mobility management of terminal equipment.
  • the SMF entity may also be referred to as an SMF network element or an SMF functional entity.
  • the SMF entity may be responsible for session management (such as user session establishment), Internet Protocol (internet protocol, IP) address allocation and management of terminal equipment, and the like.
  • a UPF entity may also be called a UPF network element or a UPF functional entity.
  • the UPF entity may be a functional entity of the user plane, that is, a user plane gateway.
  • the UPF entity can be used for packet routing and forwarding, or quality of service (quality of service, QoS) processing of user plane data, etc.
  • User data can be accessed to an external network, such as a data network (DN), through the UPF entity.
  • DN data network
  • the wireless communication system 100 may further include other network entities such as a network controller, which is not limited in this embodiment of the present application.
  • the technical solutions of the embodiments of the present application can be applied to various communication systems, for example: the fifth generation (5th generation, 5G) system or new radio (new radio, NR), long term evolution (long term evolution, LTE) system , LTE frequency division duplex (frequency division duplex, FDD) system, LTE time division duplex (time division duplex, TDD), etc.
  • the technical solutions provided in this application can also be applied to future communication systems, such as the sixth generation mobile communication system, and satellite communication systems, and so on.
  • the terminal equipment in the embodiment of the present application may also be called user equipment (user equipment, UE), access terminal, subscriber unit, subscriber station, mobile station, mobile station (mobile station, MS), mobile terminal (mobile terminal, MT) ), remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user device.
  • the terminal device in the embodiment of the present application may be a device that provides voice and/or data connectivity to users, and can be used to connect people, objects and machines, such as handheld devices with wireless connection functions, vehicle-mounted devices, and the like.
  • the terminal device in the embodiment of the present application can be mobile phone (mobile phone), tablet computer (Pad), notebook computer, palmtop computer, mobile internet device (mobile internet device, MID), wearable device, virtual reality (virtual reality, VR) equipment, augmented reality (augmented reality, AR) equipment, wireless terminals in industrial control, wireless terminals in self driving, wireless terminals in remote medical surgery, smart Wireless terminals in smart grid, wireless terminals in transportation safety, wireless terminals in smart city, wireless terminals in smart home, etc.
  • UE can be used to act as a base station.
  • a UE may act as a scheduling entity that provides sidelink signals between UEs in V2X or D2D, etc.
  • a cell phone and an automobile communicate with each other using sidelink signals. Communication between cellular phones and smart home devices without relaying communication signals through base stations.
  • the network device in this embodiment of the present application may be a device for communicating with a terminal device, and the network device may also be called an access network device or a wireless access network device, for example, the network device may be a base station.
  • the network device in this embodiment of the present application may refer to a radio access network (radio access network, RAN) node (or device) that connects a terminal device to a wireless network.
  • radio access network radio access network, RAN node (or device) that connects a terminal device to a wireless network.
  • the base station can broadly cover various names in the following, or replace with the following names, such as: Node B (NodeB), evolved base station (evolved NodeB, eNB), next generation base station (next generation NodeB, gNB), relay station, Access point, transmission point (transmitting and receiving point, TRP), transmission point (transmitting point, TP), primary station MeNB, secondary station SeNB, multi-standard wireless (MSR) node, home base station, network controller, access node , wireless node, access point (access point, AP), transmission node, transceiver node, base band unit (base band unit, BBU), remote radio unit (Remote Radio Unit, RRU), active antenna unit (active antenna unit) , AAU), radio head (remote radio head, RRH), central unit (central unit, CU), distributed unit (distributed unit, DU), positioning nodes, etc.
  • NodeB Node B
  • eNB evolved base station
  • next generation NodeB next generation NodeB
  • a base station may be a macro base station, a micro base station, a relay node, a donor node, or the like, or a combination thereof.
  • a base station may also refer to a communication module, modem or chip used to be set in the aforementioned equipment or device.
  • the base station can also be a mobile switching center, a device that undertakes the function of a base station in D2D, vehicle-to-everything (V2X), machine-to-machine (M2M) communication, and a device in a 6G network.
  • V2X vehicle-to-everything
  • M2M machine-to-machine
  • Base stations can support networks of the same or different access technologies. The embodiment of the present application does not limit the specific technology and specific device form adopted by the network device.
  • Base stations can be fixed or mobile.
  • a helicopter or drone can be configured to act as a mobile base station, and one or more cells can move according to the location of the mobile base station.
  • a helicopter or drone may be configured to serve as a device in communication with another base station.
  • the network device in this embodiment of the present application may refer to a CU or a DU, or, the network device includes a CU and a DU.
  • a gNB may also include an AAU.
  • Network equipment and terminal equipment can be deployed on land, including indoors or outdoors, hand-held or vehicle-mounted; they can also be deployed on water; they can also be deployed on aircraft, balloons and satellites in the air.
  • the scenarios where the network device and the terminal device are located are not limited.
  • a cell is described by high layers from the perspective of resource management or mobility management or service unit.
  • the coverage area of each network device may be divided into one or more cells, and each cell may correspond to one or more frequency points.
  • each cell can be regarded as an area formed by the coverage of one or more frequency points.
  • a cell may refer to an area within a wireless coverage range of a network device.
  • different cells may correspond to the same network device or different network devices.
  • the network device to which cell #1 belongs and the network device to which cell #2 belongs may be the same network device, for example, cell #1 and cell #2 may be managed by the same base station.
  • the network device to which cell #1 belongs and the network device to which cell #2 belongs may be different network devices, for example, cell #1 and cell #2 may be managed by different base stations. This embodiment of the present application does not specifically limit it.
  • a wireless communication system such as LTE system or NR system, etc.
  • a terminal device using network services moves from one cell to another, or due to wireless transmission business load adjustment, activation operation and maintenance, equipment failure, etc.
  • the system needs to transfer the communication link between the terminal equipment and the original cell to a new cell, that is, to perform handover.
  • handover may include X2 interface handover, Xn interface handover, and the like.
  • the handover may also include conditional handover.
  • the source cell may refer to a cell that provides services for the terminal device before the handover.
  • the target cell may indicate a cell that provides services for the terminal device after handover.
  • a cell may refer to a coverage area of a network device, that is, a cell corresponds to a network device.
  • the source cell corresponds to a source network device (such as a source base station)
  • the target cell corresponds to a target network device (such as a target base station).
  • source cell may be replaced with “the network device to which the source cell belongs”
  • target cell may be replaced with “the network device to which the target cell belongs”.
  • the source cell and the target cell may belong to the same network device (such as a base station), or the source cell and the target cell may also belong to different network devices.
  • the source network device and the target network device may refer to the same network device. The embodiment of the present application does not limit this.
  • the source cell and the target cell may be distinguished by different information.
  • the source cell and the target cell can be distinguished by at least one of the following information:
  • the cell identifier may refer to a cell global identifier (CGI), or may refer to a physical cell identifier (PCI); (2) different transmission reception points (transmission reception point, TRP ); (3) different reference signal sets; (4) different resources, such as different control resource sets (coreset) or different control resource set pools (coreset pool); (5) different hybrid automatic repeat requests ( hybrid automatic repeat reQuest (HARQ) process; (6) different protocol stacks, such as the protocol stack of the service data adaptation protocol (service data adaptation protocol, SDAP) layer, packet data convergence protocol (packet data convergence protocol, PDCP) layer The protocol stack of radio link control (radio link control, RLC), the protocol stack of media access control (medium access control, MAC), and the protocol stack of physical layer (physical layer, PHY); (7) different The transmission configuration indication (TCI) status of .
  • CGI cell global identifier
  • PCI physical cell identifier
  • TRP transmission reception point
  • TRP transmission reception point
  • different reference signal sets (4) different resources, such as
  • the source cell, the target cell, the source network device, and the target network device mentioned below can refer to the above description, and will not be described in detail below.
  • the whole handover process can be divided into three stages: handover preparation, handover execution, and handover completion.
  • the traditional handover process is briefly introduced below by taking the handover process of the Xn interface as an example with reference to FIG. 2 .
  • step 1 measurement control and reporting are performed between the source network device and the terminal device.
  • the source network device triggers the terminal device to perform adjacent cell measurement, so that the terminal device can measure the adjacent cell and report the measurement result to the source network device.
  • step 2 the source network device evaluates the measurement result reported by the terminal device, and decides whether to trigger a handover.
  • step 3 if the source network device decides to trigger a handover, it may send a handover request to the target network device.
  • step 4 after receiving the handover request sent by the source network device, the target network device can start admission according to the service information carried by the source network device, and perform radio resource configuration.
  • step 5 the target network device sends a handover request confirmation message to the source network device.
  • the switching request confirmation message includes the switching command generated by the target network device, and the source network device does not allow any modification to the switching command generated by the target network device, and directly forwards the switching command to the terminal device. So far, the handover preparation phase is completed.
  • the source network device may trigger the terminal device to perform handover.
  • the source network device may forward the buffered data, the data packet being transmitted, the associated sequence number (sequence number, SN) of the data, etc. to the target network device.
  • the terminal device may disconnect from the source network device and connect to the target cell (for example, perform random access, send a radio resource control (radio resource control, RRC) handover completion message to the target network device, etc.).
  • RRC radio resource control
  • step 8 the terminal device synchronizes to the target network device. So far, the handover execution phase is completed.
  • Phase 3 Handover completed (step 9-step 12)
  • step 9 the target network device sends a path switch (path switch) request to the AMF.
  • step 10 after receiving the path switching request from the target network device, the AMF performs path switching with the UPF, and clears the path flag on the user plane of the source network device.
  • the AMF may send a path switching confirmation message to the target network device.
  • step 12 the target network device sends a terminal device context release message to the source network device, notifying the source network device that the handover is successful, and triggering the source network device to release the terminal device context. At this point, the switching is complete.
  • the third generation partnership project (third generation partnership project, 3GPP) introduced a condition-based handover process (also called conditional handover (CHO)) in the 16th release (release 16, R16). , which can avoid the problem that the handover preparation time is too long, which causes the terminal equipment to be handed over too late.
  • condition-based handover process also called conditional handover (CHO)
  • a handover command (handover command) can be configured in advance for the terminal device.
  • the running trajectory of the terminal device is specific, so the source network device can configure the target network device for the terminal device in advance, and the handover command can include conditions for triggering the handover of the terminal device.
  • the terminal device may initiate an access request to the target network device.
  • the conditional handover can support configuring multiple candidate cells in the handover command, so that the terminal device can determine the specific target cell to access based on the configured conditions.
  • step 301 the source network device sends measurement configuration information to the terminal device, and the terminal device performs measurement reporting based on the measurement configuration.
  • step 302 handover preparation information is exchanged between the source network device and the target network device.
  • step 303 the source network device sends a conditional handover command to the terminal device, and the conditional handover command may carry a cell handover condition.
  • step 304 when the conditional switching command is satisfied, the terminal device realizes synchronization with the target network device.
  • an embodiment of the present application provides a wireless communication method, so that a terminal device can perform a first handover, where the first handover is based on Layer 1/Layer 2 signaling or measurement triggering.
  • the first handover is based on the bottom layer, on the one hand, it can reduce the signaling overhead, and on the other hand, it can reduce the number of transmission layers of the protocol stack. Therefore, the first handover is one of the solutions to reduce the handover delay.
  • Fig. 4 is a schematic flowchart of a wireless communication method provided by an embodiment of the present application. The method in FIG. 4 is described from the perspective of interaction among the terminal equipment, the source cell, and the target cell.
  • the terminal device may be, for example, the terminal device 130 shown in FIG. 1 , the source cell corresponds to the source network device, and the target cell corresponds to the target network device. 120. Details of the source cell and the target cell can be referred to above, and will not be repeated here.
  • step 410 the source cell sends a handover request to the target cell.
  • the handover request is used to handover the terminal equipment from the source cell to the target cell.
  • the source cell may send a handover request to one or more candidate cells, where the target cell is one of the one or more candidate cells.
  • the candidate cell may start admission and perform radio resource configuration according to the service information carried by the source cell.
  • the candidate cell may also send a handover request confirmation message to the source cell.
  • the source cell may make a handover decision (first handover decision) based on the handover request acknowledgment message.
  • the terminal device is handed over from the source cell to the target cell.
  • the handover is a first handover, where the first handover is a handover triggered based on Layer 1/Layer 2 signaling or measurement.
  • the handover of the terminal device from the source cell to the target cell may refer to that the terminal device releases the connection with the source cell and synchronizes to the target cell.
  • the terminal device may perform a random access procedure to synchronize to the target cell.
  • the terminal device may send an RRC handover completion message to the source cell to instruct the source cell to disconnect from the terminal device.
  • step 430 the terminal device is handed over from the source cell to the target cell, but it does not limit that the terminal device must be successfully handed over to the target cell, or that the terminal device must be able to successfully access the target cell.
  • the handover of the terminal device from the source cell to the target cell may mean that the terminal device attempts to perform handover or access to the target cell after determining a target cell that can be handed over.
  • the terminal device may perform the first handover triggered by signaling or measurement based on Layer 1/Layer 2, thereby reducing signaling overhead and the number of transmission layers of the protocol stack, thereby reducing handover delay.
  • the handover (first handover) is determined based on layer one measurements. In other embodiments, the handover is determined based on Layer 3 measurements. The specific content of layer 1 measurement and layer 3 measurement will be described in detail later, and will not be repeated here.
  • the handover (first handover) is triggered based on first information received by the terminal device, where the first information is used to instruct the terminal device to switch from the source cell to the target cell.
  • the terminal device may perform a first handover based on the handover command, and handover from the source cell to the target cell.
  • the handover command may include relevant information of the target cell, for example, an identifier of the target cell.
  • the terminal device may report to the source cell, and the source cell sends the first information to instruct the terminal device to perform handover.
  • the terminal device may send the second information to the source cell.
  • the source cell may send first information to the terminal device based on the second information (the first information may also be referred to as response information to the second information), and the first information is used to instruct the terminal device to receive the second information from the source cell. The cell is handed over to the target cell.
  • the second information is used to report the first measurement result to the source cell, where the first measurement result may be a layer-1 measurement result, or may also be a layer-3 measurement result.
  • the source cell may determine the target cell to be accessed by the terminal device according to the first measurement result.
  • the second information may be indication information, which is used to indicate that a target cell satisfies the first condition, and the source cell may determine the target cell to be accessed by the terminal device according to the indication information.
  • the first condition is that the terminal device determines whether the target cell satisfies the condition for performing handover/measurement reporting. The specific content of the first condition will be introduced in detail later, and will not be repeated here.
  • the second information may include information used to represent the identity of the target cell, for example, the second information may include an identity of the target cell (such as CGI or PCI).
  • the second information may also include the TCI status of the target cell, or beam related information of the target cell, and the like.
  • the first information and the second information may be carried in a MAC layer control element (control element, CE) message, which may be referred to as a MAC CE message for short.
  • the first information may be carried in downlink control information (downlink control information, DCI).
  • DCI downlink control information
  • the source cell may send the first information to the terminal device through a physical downlink control channel (physical downlink control channel, PDCCH).
  • PDCCH physical downlink control channel
  • uplink control information uplink control information
  • the terminal device may report the second information to the source cell through a physical uplink control channel (physical uplink control channel, PUCCH).
  • the handover of the terminal device from the source cell to the target cell is triggered based on a first condition.
  • the first condition is that the terminal device determines whether the target cell satisfies the conditions for performing handover/measurement reporting.
  • the terminal device can autonomously trigger the handover from the source cell to the target cell.
  • the terminal device may disconnect from the source cell, apply the configuration corresponding to the target cell, and synchronize to the target cell (for example, perform random access enter).
  • the terminal device may judge whether the candidate cell satisfies the first condition for performing the first handover according to the first condition corresponding to the candidate cell, or in other words, the terminal device may determine whether the candidate cell meets the first condition for performing the first handover based on the first condition.
  • the district is evaluated. If the result of the judgment or evaluation is that one or some candidate cells satisfy the first condition, the candidate cell may be determined as the target cell. Furthermore, the terminal device may consider switching to the target cell.
  • the first condition may be shared by one or more candidate cells. That is to say, when there are multiple candidate cells, the multiple candidate cells may correspond to the same first condition. In some embodiments, the first condition may also be at the cell level. That is to say, when there are multiple candidate cells, the multiple candidate cells may have respective corresponding first conditions.
  • the first condition when the handover is a first handover based on layer one measurements, the first condition may be a condition for layer one measurements.
  • the first condition may be block error ratio (block error ratio, BLER), channel state information-reference signal (channel state information-reference signal, CSI-RS), path loss (pathloss), etc. for layer one
  • BLER block error ratio
  • CSI-RS channel state information-reference signal
  • pathloss path loss
  • At least one beam in the first beam set satisfies a first threshold (also may be referred to as a first threshold, and thresholds mentioned later may all be referred to as thresholds).
  • a first threshold also may be referred to as a first threshold, and thresholds mentioned later may all be referred to as thresholds.
  • the first beam set may be a beam set for the source cell, for example, it may mean that at least N beams in the beam set of the source cell are lower than the first threshold, where N is a positive integer.
  • the first beam set may also be a beam set for the target cell, for example, it may mean that at least N beams in the beam set of the target cell are higher than the first threshold.
  • the embodiment of the present application does not specifically limit the signal types in the first beam set.
  • the first beam set may include at least one of the following signals: a synchronization signal block (synchronization signal block, SSB ), or CSI-RS, or uplink sounding reference signal (sounding reference signal, SRS), etc
  • the BLER of the source cell is higher than the second threshold for N consecutive times, where N is a positive integer.
  • N is a positive integer.
  • the BLER of the source cell is higher and the frequency of occurrence is higher, it means that the signal quality of the source cell is worse. At this time, it may be considered to handover the terminal equipment.
  • the terminal device is handed over from the source cell to the target cell.
  • the first condition may also be that the BLER of the source cell is higher than the second threshold within T time, T>0.
  • the terminal device is handed over from the source cell to the target cell.
  • the measured value of at least one beam in the first beam set is lower/higher than the third threshold within T time, T>0.
  • the measurement value of the at least one beam may be a measurement value for the source cell, for example, it may mean that the measurement value of the CSI-RS of the source cell is lower than the third threshold.
  • the measurement value of the at least one beam may also be a measurement value for the target cell, for example, it may mean that the measurement value of the CSI-RS of the target cell is higher than the third threshold.
  • the difference between the measured value of the source cell and the measured value of the target cell is greater than the fourth threshold.
  • the present application does not specifically limit the measured values of the source cell and the target cell, for example, they may be measured values for BLER, CSI-RS/SSB, and path loss.
  • the terminal device when the measured value of the source cell is lower than the measured value of the target cell, and the difference between the measured value of the source cell and the measured value of the target cell is greater than a fourth threshold, the terminal device switches from the source cell to the target cell, For example, when the measured value of the CSI-RS of the source cell is lower than the fourth threshold of the measured value of the CSI-RS of the target cell, the terminal device is handed over from the source cell to the target cell.
  • the terminal device when the measured value of the source cell is higher than the measured value of the target cell, and the difference between the measured value of the source cell and the measured value of the target cell is greater than a fourth threshold, the terminal device switches from the source cell to the target cell, For example, when the measured value of BLER of the source cell is higher than the fourth threshold value of the measured value of BLER of the target cell, the terminal device is handed over from the source cell to the target cell.
  • the measured value of the source cell and the measured value of the target cell should be for the same measurement signal, for example, both
  • the method is to compare the measured values of the CSI-RS of the source cell and the target cell, or to compare the measured values of the CSI-RS and the path loss of the source cell and the target cell.
  • the fourth threshold is equal to zero. That is, as long as the measured signal of the target cell is better than the measured signal of the source cell, it is possible to perform handover of the terminal device from the source cell to the target cell. In some embodiments, the fourth threshold is greater than zero. That is, when the measured signal of the target cell is much better than the measured signal of the source cell, it is possible to perform handover of the terminal device from the source cell to the target cell.
  • the measured value of the source cell is lower than the fifth threshold, and the measured value of the target cell is higher than the sixth threshold.
  • the fifth threshold is equal to the sixth threshold. That is, as long as the measured signal of the target cell is better than that of the source cell, it is possible to perform handover of the terminal device from the source cell to the target cell.
  • the fifth threshold is less than the sixth threshold. For example, when the measured value is a measured value for CSI-RS, the measured value of the source cell may be lower than the fifth threshold, and the measured value of the target cell may be higher than the sixth threshold.
  • the measured value of the source cell is higher than the seventh threshold, and the measured value of the target cell is lower than the eighth threshold.
  • the seventh threshold may be equal to the eighth threshold, or the seventh threshold may be greater than the eighth threshold.
  • the measured value is a measurement for BLER
  • the measured value of the source cell may be higher than the seventh threshold, and the measured value of the target cell may be lower than the eighth threshold.
  • the first condition when the handover is the first handover based on layer three measurements, the first condition may be a condition for layer three measurements.
  • the first condition may be a measurement event for layer three.
  • the first condition may include but not limited to A1 measurement event, A2 measurement event, A3 measurement event, A4 measurement event, A5 measurement event, B1 measurement event or B2 measurement event.
  • the A3 measurement event may specifically refer to that the cell signal quality of the target cell is higher than the cell signal quality of the source cell by a preset first threshold.
  • A5 The measurement event may specifically refer to that the cell signal quality of the target cell is higher than a preset second threshold, and the cell signal quality of the source cell is lower than a preset third threshold.
  • the source cell may indicate the first condition to the terminal device through a MAC CE message. In some embodiments, the source cell may indicate the first condition to the terminal device through DCI.
  • this embodiment of the present application may further include step 420.
  • the source cell sends handover configuration information to the terminal equipment.
  • the handover configuration information may include configuration information of one or more candidate cells.
  • the configuration information of the candidate cell may include an identifier of the candidate cell (such as CGI or PCI), random access channel (random access channel, RACH) resource information for accessing the candidate cell, frequency information corresponding to the candidate cell, Physical layer configuration parameters, MAC layer configuration parameters, RLC layer configuration parameters, RRC layer configuration parameters, bearer configuration information, etc. corresponding to the candidate cell.
  • identifier of the candidate cell such as CGI or PCI
  • random access channel random access channel, RACH
  • RACH random access channel
  • the handover configuration information sent by the source cell to the terminal device further includes first conditions corresponding to one or more candidate cells.
  • the first condition is that the terminal device determines whether the one or more candidate cells meet the conditions for performing handover/measurement reporting. For the specific content of the first condition, refer to the above, and will not be repeated here.
  • the handover configuration information is sent by the source cell to the terminal device through high-layer signaling.
  • the higher layer signaling may be RRC signaling.
  • handover configuration information may be carried in an RRC reconfiguration message.
  • measurement control and reporting can also be performed between the source cell and the terminal device.
  • the source cell may trigger the terminal device to perform neighboring cell measurement, and the terminal device may report the measurement result to the source cell after measuring the neighboring cell.
  • the content of the neighbor cell measurement performed by the terminal device may include a measurement frequency point, a measurement identifier, etc., which is not limited in this application.
  • the terminal device may decide to switch based on the measurement result and/or radio resource management (radio resource management, RRM) information.
  • RRM radio resource management
  • the source cell and the target cell can be distinguished by different cell identities, different TRPs, different reference signal sets, different resources, different HARQ processes, different protocol stacks, different TCI states, etc.
  • Example 1 Layer 1 measurement + reporting
  • FIG. 5 is a schematic flowchart of another wireless communication method provided by an embodiment of the present application.
  • step 501 measurement control and reporting are performed between the source cell and the terminal equipment.
  • the source cell may configure a measurement process for the terminal device, and the terminal device performs measurement and report according to the measurement configuration.
  • step 502 the source cell decides whether to trigger handover based on the measurement result and/or RRM information reported by the terminal device.
  • step 503 if the source cell decides to trigger handover, it may send a handover request to one or more candidate cells.
  • the candidate cell may start admission according to the service information carried by the source cell, and perform radio resource configuration.
  • step 505 the candidate cell sends a handover request confirmation message to the source cell.
  • the source cell may make the first handover decision based on the handover request acknowledgment message of the candidate cell.
  • step 506 if the source cell confirms to perform the first handover, it may send the first handover configuration to the terminal device based on the handover request confirmation message after receiving the handover request confirmation message of the candidate cell, and the handover configuration may be carried in the RRC heavy configuration message.
  • the handover configuration may include configuration information of one or more candidate cells and a first condition corresponding to the one or more candidate cells.
  • the first condition may be used by the terminal device to evaluate whether the candidate cell satisfies the condition for performing handover/measurement reporting.
  • the terminal device sends an RRC reconfiguration complete message to the source cell.
  • the terminal device may evaluate one or more candidate cells sent by the source cell based on the first condition, and determine whether they satisfy the first condition.
  • the first condition is based on layer one measurement, for example, it may be based on BLER, CSI-RS/SSB, and path loss measurement evaluation.
  • the specific content of the first condition please refer to the above.
  • the terminal device may send second information to the source cell, and the second information may be used to report the first measurement result (current measurement result); or, the second information It may be indication information, which is used to indicate that there is currently a candidate cell that satisfies the first condition.
  • the second information may also include identifiers of candidate cells that meet the first condition.
  • the second information may be a MAC CE message or UCI.
  • the source cell instructs the terminal device to start switching based on the second information sent by the terminal device, wherein the switching command is used to instruct the terminal device to switch to the target cell.
  • the handover command may include the identity of the target cell.
  • step 510 the terminal device releases the connection with the source cell, applies the corresponding configuration of the target cell, synchronizes to the target cell, and completes the first handover.
  • Embodiment 2 Layer 1 measurement + terminal device triggering handover
  • FIG. 6 is a schematic flowchart of another wireless communication method provided by an embodiment of the present application.
  • step 601 measurement control and reporting are performed between the source cell and the terminal equipment.
  • the source cell may configure a measurement process for the terminal device, and the terminal device performs measurement and report according to the measurement configuration.
  • step 602 the source cell decides whether to trigger handover based on the measurement result and/or RRM information reported by the terminal device.
  • step 603 if the source cell decides to trigger handover, it may send a handover request to one or more candidate cells.
  • the candidate cell may start admission and configure radio resources according to the service information carried by the source cell.
  • step 605 the candidate cell sends a handover request confirmation message to the source cell.
  • the source cell may make the first handover decision based on the handover request acknowledgment message of the candidate cell.
  • step 606 if the source cell confirms to perform the first handover, it may send the first handover configuration to the terminal device based on the handover request confirmation message after receiving the handover request confirmation message of the candidate cell, and the handover configuration may be carried in the RRC heavy configuration message.
  • the handover configuration may include configuration information of one or more candidate cells and a first condition corresponding to the one or more candidate cells.
  • the first condition may be used by the terminal device to evaluate whether the candidate cell satisfies the condition for performing handover/measurement reporting.
  • the terminal device sends an RRC reconfiguration complete message to the source cell.
  • the terminal device may evaluate one or more candidate cells sent by the source cell based on the first condition, and determine whether they satisfy the first condition.
  • the first condition is based on layer one measurement, for example, it may be based on BLER, CSI-RS/SSB, and path loss measurement evaluation.
  • the specific content of the first condition please refer to the above.
  • step 608 when a candidate cell satisfies the first condition, the terminal device takes the candidate cell as the target cell, releases the connection with the source cell, applies the corresponding configuration of the target cell, synchronizes to the target cell, and completes the first handover .
  • FIG. 7 is a schematic flowchart of another wireless communication method provided by an embodiment of the present application.
  • step 701 measurement control and reporting are performed between the source cell and the terminal equipment.
  • the source cell may configure a measurement process for the terminal device, and the terminal device performs measurement and report according to the measurement configuration.
  • step 702 the source cell decides whether to trigger handover based on the measurement result and/or RRM information reported by the terminal device.
  • step 703 if the source cell decides to trigger handover, it may send a handover request to one or more candidate cells.
  • the candidate cell may start admission according to the service information carried by the source cell, and perform radio resource configuration.
  • step 705 the candidate cell sends a handover request confirmation message to the source cell.
  • the source cell may make the first handover decision based on the handover request acknowledgment message of the candidate cell.
  • step 706 if the source cell confirms to perform the first handover, it may send the first handover configuration to the terminal device based on the handover request confirmation message after receiving the handover request confirmation message of the candidate cell, and the handover configuration may be carried in the RRC heavy configuration message.
  • the handover configuration may include configuration information of one or more candidate cells and a first condition corresponding to the one or more candidate cells.
  • the first condition may be used by the terminal device to evaluate whether the candidate cell satisfies the condition for performing handover/measurement reporting.
  • the terminal device sends an RRC reconfiguration complete message to the source cell.
  • the terminal device may evaluate one or more candidate cells sent by the source cell based on the first condition, and determine whether they satisfy the first condition.
  • the first condition is based on layer three measurement, for example, it may be an A3 measurement event or an A5 measurement event.
  • the specific content of the first condition please refer to the above.
  • the terminal device may send second information to the source cell, and the second information may be used to report the first measurement result (current measurement result); or, the second information It may be indication information, which is used to indicate that there is currently a candidate cell that satisfies the first condition.
  • the second information may also include identifiers of candidate cells that meet the first condition.
  • the second information may be a MAC CE message or UCI.
  • the source cell instructs the terminal device to start switching based on the second information sent by the terminal device, wherein the switching command is used to instruct the terminal device to switch to the target cell.
  • the handover command may include the identity of the target cell.
  • step 710 the terminal device releases the connection with the source cell, applies the corresponding configuration of the target cell, synchronizes to the target cell, and completes the first handover.
  • Embodiment 4 Layer 3 measurement + terminal device triggering handover
  • FIG. 8 is a schematic flowchart of another wireless communication method provided by an embodiment of the present application.
  • step 801 measurement control and reporting are performed between the source cell and the terminal equipment.
  • the source cell may configure a measurement process for the terminal device, and the terminal device performs measurement and report according to the measurement configuration.
  • step 802 the source cell decides whether to trigger handover based on the measurement result and/or RRM information reported by the terminal device.
  • step 803 if the source cell decides to trigger handover, it may send a handover request to one or more candidate cells.
  • the candidate cell may start admission according to the service information carried by the source cell, and perform radio resource configuration.
  • step 805 the candidate cell sends a handover request confirmation message to the source cell.
  • the source cell may make the first handover decision based on the handover request acknowledgment message of the candidate cell.
  • step 806 if the source cell confirms to perform the first handover, it may send the first handover configuration to the terminal device based on the handover request confirmation message after receiving the handover request confirmation message of the candidate cell, and the handover configuration may be carried in the RRC heavy configuration message.
  • the handover configuration may include configuration information of one or more candidate cells and a first condition corresponding to the one or more candidate cells.
  • the first condition may be used by the terminal device to evaluate whether the candidate cell satisfies the condition for performing handover/measurement reporting.
  • the terminal device sends an RRC reconfiguration complete message to the source cell.
  • the terminal device may evaluate one or more candidate cells sent by the source cell based on the first condition, and determine whether they satisfy the first condition.
  • the first condition is based on layer three measurement, for example, it may be an A3 measurement event or an A5 measurement event.
  • the specific content of the first condition please refer to the above.
  • step 808 when a candidate cell satisfies the first condition, the terminal device takes the candidate cell as the target cell, releases the connection with the source cell, applies the corresponding configuration of the target cell, synchronizes to the target cell, and completes the first handover .
  • Fig. 9 is a schematic structural block diagram of a terminal device provided by an embodiment of the present application.
  • the terminal device 900 shown in FIG. 9 may include a switching module 910 .
  • the handover module 910 may be used to handover from the source cell to the target cell, the handover is a first handover, and the first handover is a handover triggered based on Layer 1/Layer 2 signaling or measurement.
  • the handover is determined based on layer one measurement or layer three measurement.
  • the handover is triggered based on first information received by the terminal device, where the first information is used to instruct the terminal device to switch from the source cell to the target cell.
  • the first information is carried in a MAC CE message or downlink control information DCI.
  • the terminal device 900 may further include a sending module 920 .
  • the sending module 920 may be configured to send second information to the source cell, where the second information is used to report a first measurement result, and the first measurement result includes a layer-1 measurement result or a layer-3 measurement result, or the second information is used to indicate The target cell satisfies a first condition, and the first condition is that the terminal device determines whether the target cell satisfies a condition for performing handover/measurement reporting.
  • the second information is carried in the MAC CE message or the uplink control information UCI.
  • the second information includes at least one of the following information: an identifier of the target cell, a transmission configuration indication TCI state of the target cell, or beam related information of the target cell.
  • the handover is triggered based on a first condition, where the first condition is that the terminal device determines whether the target cell satisfies a condition for performing handover/measurement reporting.
  • the handover is determined based on layer one measurement, and the first condition includes at least one of the following conditions: at least one beam in the first beam set satisfies the first threshold; the block error rate BLER of the source cell is high for N consecutive times At the second threshold, where N is a positive integer; the measured value of at least one beam in the first beam set is lower/higher than the third threshold within T time, T>0; the measured value of the source cell is the same as the measured value of the target cell The difference of values is greater than the fourth threshold; the measured value of the source cell is lower than the fifth threshold, and the measured value of the target cell is higher than the sixth threshold; or, the measured value of the source cell is higher than the seventh threshold, and the measured value of the target cell is lower at the eighth threshold.
  • the first beam set includes at least one of the following: a synchronization signal block SSB; a channel state information-reference signal CSI-RS, or an uplink sounding reference signal SRS.
  • handover is determined based on Layer 3 measurement, and the first condition includes an A3 measurement event or an A5 measurement event.
  • the terminal device may further include a receiving module 930 .
  • the receiving module 930 may be configured to receive handover configuration information sent by the source cell, where the handover configuration information includes configuration information of at least one candidate cell, where the target cell is a cell in the at least one candidate cell.
  • the handover configuration information further includes a first condition corresponding to at least one candidate cell, where the first condition is that the terminal device determines whether the at least one candidate cell satisfies a condition for performing handover/measurement reporting.
  • the handover configuration information is carried in a radio resource control RRC reconfiguration message.
  • the source cell and the target cell are distinguished by at least one of the following: different cell identities; different transmission and reception points TRP; different reference signal sets; different resources; ; different protocol stacks; or, different TCI states.
  • the terminal device 900 shown in Figure 9 can be used to implement any of the wireless communication methods shown in Figures 4-8, and its implementation process is the same as the content related to the previous method. For details, please refer to the implementation shown in Figures 4-8 example, which will not be repeated here.
  • Fig. 10 is a schematic structural block diagram of a network device provided by an embodiment of the present application.
  • the network device shown in FIG. 10 may be the network device to which the source cell belongs.
  • the network device 1000 may include a first sending module 1010 .
  • the first sending module 1010 may be used to send a handover request to the target cell, the handover request is used to handover the terminal device from the source cell to the target cell, the handover is a first-two handover, and the first handover is based on Layer 1/Layer 2 Signaling or measurement triggered handover.
  • the handover is determined based on layer one measurement or layer three measurement.
  • the handover is triggered based on first information received by the terminal device, where the first information is used to instruct the terminal device to switch from the source cell to the target cell.
  • the first information is carried in a MAC CE message or downlink control information DCI.
  • the network device 1000 may further include a receiving module 1020 .
  • the receiving module 1020 may be configured to receive the second information sent by the terminal device, the second information is used to report the first measurement result, the first measurement result includes a layer 1 measurement result or a layer 3 measurement result, or the second information is used to Indicating that the target cell satisfies the first condition, the first condition is that the terminal device determines whether the target cell satisfies the condition for performing handover/measurement reporting.
  • the second information is carried in the MAC CE message or the uplink control information UCI.
  • the second information includes at least one of the following information: an identifier of the target cell, a transmission configuration indication TCI state of the target cell, or beam related information of the target cell.
  • the handover is triggered based on a first condition, where the first condition is that the terminal device determines whether the target cell satisfies a condition for performing handover/measurement reporting.
  • the handover is determined based on layer one measurement, and the first condition includes at least one of the following conditions: at least one beam in the first beam set satisfies the first threshold; the block error rate BLER of the source cell is high for N consecutive times At the second threshold, where N is a positive integer; the measured value of at least one beam in the first beam set is lower/higher than the third threshold within T time, T>0; the measured value of the source cell is the same as the measured value of the target cell The difference of values is greater than the fourth threshold; the measured value of the source cell is lower than the fifth threshold, and the measured value of the target cell is higher than the sixth threshold; or, the measured value of the source cell is higher than the seventh threshold, and the measured value of the target cell is lower at the eighth threshold.
  • the first beam set includes at least one of the following: a synchronization signal block SSB; a channel state information-reference signal CSI-RS, or an uplink sounding reference signal SRS.
  • handover is determined based on Layer 3 measurement, and the first condition includes an A3 measurement event or an A5 measurement event.
  • the network device 1000 may further include a second sending module 1030 .
  • the sending module 1030 may be configured to send handover configuration information to the terminal device, where the handover configuration information includes configuration information of at least one candidate cell, where the target cell is a cell in the at least one candidate cell.
  • the handover configuration information further includes a first condition corresponding to at least one candidate cell, where the first condition is that the terminal device determines whether the at least one candidate cell satisfies a condition for performing handover/measurement reporting.
  • the handover configuration information is carried in a radio resource control RRC reconfiguration message.
  • the source cell and the target cell are distinguished by at least one of the following: different cell identities; different transmission and reception points TRP; different reference signal sets; different resources; ; different protocol stacks; or, different TCI states.
  • the network device 1000 shown in Figure 10 can be used to implement any of the wireless communication methods shown in Figures 4-8, and its implementation process is the same as the content related to the previous method. For details, please refer to the implementation shown in Figures 4-8 example, which will not be repeated here.
  • Fig. 11 is a schematic structural block diagram of a network device provided by another embodiment of the present application.
  • the network device shown in FIG. 11 may be the network device to which the target cell belongs.
  • the network device 1100 may include a receiving module 1110 .
  • the receiving module 1110 may be configured to receive a handover request sent by the source cell, the handover request is used to handover the terminal device from the source cell to the target cell, the handover is a first handover, and the first handover is based on a Layer 1/Layer 2 signal Command or measurement trigger switching.
  • the handover is determined based on layer one measurement or layer three measurement.
  • the handover is triggered based on first information received by the terminal device, where the first information is used to instruct the terminal device to switch from the source cell to the target cell.
  • the first information is carried in a MAC CE message or downlink control information DCI.
  • the handover is triggered based on a first condition, where the first condition is that the terminal device determines whether the target cell satisfies a condition for performing handover/measurement reporting.
  • the handover is determined based on layer one measurement, and the first condition includes at least one of the following conditions: at least one beam in the first beam set satisfies the first threshold; the block error rate BLER of the source cell is high for N consecutive times At the second threshold, where N is a positive integer; the measured value of at least one beam in the first beam set is lower/higher than the third threshold within T time, T>0; the measured value of the source cell is the same as the measured value of the target cell The difference of values is greater than the fourth threshold; the measured value of the source cell is lower than the fifth threshold, and the measured value of the target cell is higher than the sixth threshold; or, the measured value of the source cell is higher than the seventh threshold, and the measured value of the target cell is lower at the eighth threshold.
  • the first beam set includes at least one of the following: a synchronization signal block SSB; a channel state information-reference signal CSI-RS, or an uplink sounding reference signal SRS.
  • handover is determined based on Layer 3 measurement, and the first condition includes an A3 measurement event or an A5 measurement event.
  • the network device 1100 may further include a sending module 1120 .
  • the sending module 1120 may be configured to send a response message of the handover request to the source cell, where the response message of the handover request includes configuration information of the target cell.
  • the source cell and the target cell are distinguished by at least one of the following: different cell identities; different transmission and reception points TRP; different reference signal sets; different resources; ; different protocol stacks; or, different TCI states.
  • the network device 1100 shown in Figure 11 can be used to implement any of the wireless communication methods shown in Figures 4-8, and its implementation process is the same as the content related to the previous method. For details, please refer to the implementation shown in Figures 4-8 example, which will not be repeated here.
  • Fig. 12 is a schematic structural diagram of a communication device according to an embodiment of the present application.
  • the dashed line in Figure 12 indicates that the unit or module is optional.
  • the apparatus 1200 may be used to implement the methods described in the foregoing method embodiments.
  • Apparatus 1200 may be a chip, a terminal device or a network device.
  • Apparatus 1200 may include one or more processors 1210 .
  • the processor 1210 can support the device 1200 to implement the methods described in the foregoing method embodiments.
  • the processor 1210 may be a general purpose processor or a special purpose processor.
  • the processor may be a central processing unit (central processing unit, CPU).
  • the processor can also be other general-purpose processors, digital signal processors (digital signal processors, DSPs), application specific integrated circuits (application specific integrated circuits, ASICs), off-the-shelf programmable gate arrays (field programmable gate arrays, FPGAs) Or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.
  • a general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like.
  • Apparatus 1200 may also include one or more memories 1220 .
  • a program is stored in the memory 1220, and the program can be executed by the processor 1210, so that the processor 1210 executes the methods described in the foregoing method embodiments.
  • the memory 1220 may be independent from the processor 1210 or may be integrated in the processor 1210 .
  • the apparatus 1200 may also include a transceiver 1230 .
  • the processor 1210 can communicate with other devices or chips through the transceiver 1230 .
  • the processor 1210 may send and receive data with other devices or chips through the transceiver 1230 .
  • the embodiment of the present application also provides a computer-readable storage medium for storing programs.
  • the computer-readable storage medium can be applied to the terminal or the network device provided in the embodiments of the present application, and the program enables the computer to execute the methods performed by the terminal or the network device in the various embodiments of the present application.
  • the embodiment of the present application also provides a computer program product.
  • the computer program product includes programs.
  • the computer program product can be applied to the terminal or the network device provided in the embodiments of the present application, and the program enables the computer to execute the methods performed by the terminal or the network device in the various embodiments of the present application.
  • the embodiment of the present application also provides a computer program.
  • the computer program can be applied to the terminal or the network device provided in the embodiments of the present application, and the computer program enables the computer to execute the methods performed by the terminal or the network device in the various embodiments of the present application.
  • the "indication" mentioned may be a direct indication, may also be an indirect indication, and may also mean that there is an association relationship.
  • a indicates B which can mean that A directly indicates B, for example, B can be obtained through A; it can also indicate that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also indicate that there is an association between A and B relation.
  • B corresponding to A means that B is associated with A, and B can be determined according to A.
  • determining B according to A does not mean determining B only according to A, and B may also be determined according to A and/or other information.
  • the term "corresponding" may indicate that there is a direct or indirect correspondence between the two, or that there is an association between the two, or that it indicates and is instructed, configures and is configured, etc. relation.
  • predefined or “preconfigured” can be realized by pre-saving corresponding codes, tables or other methods that can be used to indicate relevant information in devices (for example, including terminal devices and network devices).
  • the application does not limit its specific implementation.
  • pre-defined may refer to defined in the protocol.
  • the "protocol” may refer to a standard protocol in the communication field, for example, may include the LTE protocol, the NR protocol, and related protocols applied to future communication systems, which is not limited in the present application.
  • sequence numbers of the above-mentioned processes do not mean the order of execution, and the execution order of each process should be determined by its functions and internal logic, rather than the implementation process of the embodiments of the present application. constitute any limitation.
  • the disclosed systems, devices and methods may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of 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 may be distributed to multiple network units. Part 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 each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.
  • all or part of them may be implemented by software, hardware, firmware or any combination thereof.
  • software When implemented using software, it 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. When the computer program instructions are loaded and executed on the computer, the processes or functions according to the embodiments of the present application will be generated in whole or in part.
  • the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from a website, computer, server or data center Transmission to another website site, computer, server or data center by wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.).
  • the computer-readable storage medium may be any available medium that can be read by a computer, or a data storage device such as a server or a data center integrated with one or more available media.
  • the available medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a digital versatile disc (digital video disc, DVD)) or a semiconductor medium (for example, a solid state disk (solid state disk, SSD) )wait.
  • a magnetic medium for example, a floppy disk, a hard disk, a magnetic tape
  • an optical medium for example, a digital versatile disc (digital video disc, DVD)
  • a semiconductor medium for example, a solid state disk (solid state disk, SSD)

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Abstract

提供了一种无线通信的方法、终端设备和网络设备。该无线通信的方法包括：终端设备从源小区切换到目标小区，该切换为第一切换，该第一切换为基于层一/层二的信令或测量触发的切换。本申请实施例中，终端设备能够执行基于层一/层二的信令或测量触发的第一切换，从而可以减小信令开销以及协议栈的传输层数，进而降低切换时延。

Description

无线通信的方法、终端设备和网络设备
本申请涉及通信技术领域，并且更为具体地，涉及一种无线通信的方法、终端设备和网络设备。
背景技术
相关技术中，传统的切换和条件切换是基于终端设备上报以及网络设备配置的层三切换，终端设备和网络设备之间多条信令的交互导致切换时延较大。
发明内容
本申请提供一种无线通信的方法、终端设备和网络设备，以降低切换时延。
第一方面，提供一种无线通信的方法，包括：终端设备从源小区切换到目标小区，所述切换为第一切换，所述第一切换为基于层一/层二的信令或测量触发的切换。
第二方面，提供一种无线通信的方法，包括：源小区向目标小区发送切换请求，所述切换请求用于将终端设备从所述源小区切换到所述目标小区，所述切换为第一切换，所述第一切换为基于层一/层二的信令或测量触发的切换。
第三方面，提供一种无线通信的方法，包括：目标小区接收源小区发送的切换请求，所述切换请求用于将终端设备从所述源小区切换到所述目标小区，所述切换为第一切换，所述第一切换为基于层一/层二的信令或测量触发的切换。
第四方面，提供一种终端设备，包括：切换模块，用于从源小区切换到目标小区，所述切换为第一切换，所述第一切换为基于层一/层二的信令或测量触发的切换。
第五方面，提供一种网络设备，所述网络设备为源小区所属的网络设备，所述网络设备包括：第一发送模块，用于向目标小区发送切换请求，所述切换请求用于将终端设备从所述源小区切换到所述目标小区，所述切换为第一切换，所述第一切换为基于层一/层二的信令或测量触发的切换。
第六方面，提供一种网络设备，所述网络设备为目标小区所属的网络设备，所述网络设备包括：接收模块，用于接收源小区发送的切换请求，所述切换请求用于将终端设备从所述源小区切换到所述目标小区，所述切换为第一切换，所述第一切换为基于层一/层二的信令或测量触发的切换。
第七方面，提供一种终端设备，包括处理器、存储器以及通信接口，所述存储器用于存储一个或多个计算机程序，所述处理器用于调用所述存储器中的计算机程序使得所述终端设备执行第一方面的方法中的部分或全部步骤。
第八方面，提供一种网络设备，包括处理器、存储器、通信接口，所述存储器用于存储一个或多个计算机程序，所述处理器用于调用所述存储器中的计算机程序使得所述网络设备执行第二方面或第三方面的方法中的部分或全部步骤。
第九方面，本申请实施例提供了一种通信系统，该系统包括上述的终端设备和/或网络设备。在另一种可能的设计中，该系统还可以包括本申请实施例提供的方案中与该终端设备或网络设备进行交互的其他设备。
第十方面，本申请实施例提供了一种计算机可读存储介质，所述计算机可读存储介质存储有计算机程序，所述计算机程序使得终端执行上述第一方面的方法中的部分或全部步骤。
第十一方面，本申请实施例提供了一种计算机可读存储介质，所述计算机可读存储介质存储有计算机程序，所述计算机程序使得网络设备执行上述第二方面或第三方面的方法中的部分或全部步骤。
第十二方面，本申请实施例提供了一种计算机程序产品，其中，所述计算机程序产品包括存储了计算机程序的非瞬时性计算机可读存储介质，所述计算机程序可操作来使终端执行上述第一方面的方法中的部分或全部步骤。在一些实现方式中，该计算机程序产品可以为一个软件安装包。
第十三方面，本申请实施例提供了一种计算机程序产品，其中，所述计算机程序产品包括存储了计算机程序的非瞬时性计算机可读存储介质，所述计算机程序可操作来使网络设备执行上述第二方面或第三方面的方法中的部分或全部步骤。在一些实现方式中，该计算机程序产品可以为一个软件安装包。
第十四方面，本申请实施例提供了一种芯片，该芯片包括存储器和处理器，处理器可以从存储器中调用并运行计算机程序，以实现上述第一方面至第三方面中任一方面的方法中所描述的部分或全部步骤。
本申请实施例中，终端设备能够执行基于层一/层二的信令或测量触发的第一切换，从而可以减小信令开销以及协议栈的传输层数，进而降低切换时延。
附图说明
图1为可应用本申请实施例的无线通信系统的架构示例图。
图2为本申请实施例提供的一种基于Xn接口的切换流程示意图。
图3为本申请实施例提供的一种基于条件触发的切换流程示意图。
图4为本申请一实施例提供的无线通信的方法的流程示意图。
图5为本申请另一实施例提供的无线通信的方法的流程示意图。
图6为本申请又一实施例提供的无线通信的方法的流程示意图。
图7为本申请又一实施例提供的无线通信的方法的流程示意图。
图8为本申请又一实施例提供的无线通信的方法的流程示意图。
图9为本申请实施例提供的终端设备的示意性结构框图。
图10为本申请一实施例提供的网络设备的示意性结构框图。
图11为本申请另一实施例提供的网络设备的示意性结构框图。
图12为本申请实施例提供的装置的示意性结构图。
具体实施方式
下面将结合附图，对本申请中的技术方案进行描述。
图1为可应用本申请实施例的无线通信系统100。该无线通信系统100可以包括至少两个网络设备，例如图1所示的网络设备110和网络设备120。该无线通信系统100还可以包括至少一个终端设备，例如图1所示的终端设备130。其中，该终端设备130可以是移动的或者固定的。网络设备110和网络设备120可以是与终端设备130通信的设备。网络设备110和网络设备120可以为特定的地理区域提供通信覆盖，并且可以与位于该覆盖区域(小区)内的终端设备130进行通信。
图1示例性地示出了两个网络设备和一个终端设备，但这不应该对本申请构成任何限定。可选地，该无线通信系统100可以包括更多个网络设备，并且每个网络设备的覆盖范围内可以包括其它数量的终端设备，本申请实施例对此不做限定。
可选地，该无线通信系统100还可以包括一个或多个核心网设备，本申请实施例对此不作限定。示例性地，核心网设备例如可以包括以下一项或多项：接入和移动性管理功能(access and mobility management function，AMF)实体、会话管理功能(session management function，SMF)实体、用户面功能(user plane function，UPF)实体等。
AMF实体，例如也可以称为AMF网元或AMF功能实体。AMF实体可以用于负责终端设备的接入管理和移动性管理等。
SMF实体，例如也可以称为SMF网元或SMF功能实体。SMF实体可以负责会话管理(如用户的会话建立)、终端设备的网际协议(internet protocol，IP)地址分配和管理等。
UPF实体，例如也可以称为UPF网元或UPF功能实体。UPF实体可以是用户面的功能实体，即用户面网关。UPF实体可以用于分组路由和转发、或用户面数据的服务质量(quality of service，QoS)处理等。用户数据可以通过UPF实体接入到外部网络，如数据网络(data network，DN)。
可选地，该无线通信系统100还可以包括网络控制器等其他网络实体，本申请实施例对此不作限定。
应理解，本申请实施例的技术方案可以应用于各种通信系统，例如：第五代(5th generation，5G)系统或新无线(new radio，NR)、长期演进(long term evolution，LTE)系统、LTE频分双工(frequency division duplex，FDD)系统、LTE时分双工(time division duplex，TDD)等。本申请提供的技术方案还可以应用于未来的通信系统，如第六代移动通信系统，又如卫星通信系统，等等。
本申请实施例中的终端设备也可以称为用户设备(user equipment，UE)、接入终端、用户单元、用户站、移动站、移动台(mobile station，MS)、移动终端(mobile terminal，MT)、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。本申请实施例中的终端设备可以是指向用户提供语音和/或数据连通性的设备，可以用于连接人、物和机，例如具有无线连接功能的手持式设备、车载设备等。本申请的实施例中的终端设备可以是手机(mobile phone)、平板电脑(Pad)、笔记本电脑、掌上电脑、移动互联网设备(mobile internet device，MID)、可穿戴设备，虚拟现实(virtual reality，VR)设备、增强现实(augmented reality，AR)设备、工业控制(industrial control)中的无线终端、无人驾驶(self driving)中的无线终端、远程手术(remote medical surgery)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端、智慧家庭(smart home)中的无线终端等。可选地，UE可以用于充当基站。例如，UE可以充当调度实体，其在V2X或D2D等中的UE之间提供侧行链路信号。比如，蜂窝电话和汽车利用 侧行链路信号彼此通信。蜂窝电话和智能家居设备之间通信，而无需通过基站中继通信信号。
本申请实施例中的网络设备可以是用于与终端设备通信的设备，该网络设备也可以称为接入网设备或无线接入网设备，如网络设备可以是基站。本申请实施例中的网络设备可以是指将终端设备接入到无线网络的无线接入网(radio access network，RAN)节点(或设备)。基站可以广义的覆盖如下中的各种名称，或与如下名称进行替换，比如：节点B(NodeB)、演进型基站(evolved NodeB，eNB)、下一代基站(next generation NodeB，gNB)、中继站、接入点、传输点(transmitting and receiving point，TRP)、发射点(transmitting point，TP)、主站MeNB、辅站SeNB、多制式无线(MSR)节点、家庭基站、网络控制器、接入节点、无线节点、接入点(access point，AP)、传输节点、收发节点、基带单元(base band unit，BBU)、射频拉远单元(Remote Radio Unit，RRU)、有源天线单元(active antenna unit，AAU)、射频头(remote radio head，RRH)、中心单元(central unit，CU)、分布式单元(distributed unit，DU)、定位节点等。基站可以是宏基站、微基站、中继节点、施主节点或类似物，或其组合。基站还可以指用于设置于前述设备或装置内的通信模块、调制解调器或芯片。基站还可以是移动交换中心以及设备到设备D2D、车辆外联(vehicle-to-everything，V2X)、机器到机器(machine-to-machine，M2M)通信中承担基站功能的设备、6G网络中的网络侧设备、未来的通信系统中承担基站功能的设备等。基站可以支持相同或不同接入技术的网络。本申请的实施例对网络设备所采用的具体技术和具体设备形态不做限定。
基站可以是固定的，也可以是移动的。例如，直升机或无人机可以被配置成充当移动基站，一个或多个小区可以根据该移动基站的位置移动。在其他示例中，直升机或无人机可以被配置成用作与另一基站通信的设备。
在一些部署中，本申请实施例中的网络设备可以是指CU或者DU，或者，网络设备包括CU和DU。gNB还可以包括AAU。
网络设备和终端设备可以部署在陆地上，包括室内或室外、手持或车载；也可以部署在水面上；还可以部署在空中的飞机、气球和卫星上。本申请实施例中对网络设备和终端设备所处的场景不做限定。
应理解，本申请中的通信设备的全部或部分功能也可以通过在硬件上运行的软件功能来实现，或者通过平台(例如云平台)上实例化的虚拟化功能来实现。
为便于理解本申请实施例，下面先对本申请实施例中涉及的术语进行简单介绍。
小区(cell)
小区是高层从资源管理或移动性管理或服务单元的角度来描述的。每个网络设备的覆盖范围可以被划分为一个或多个小区，且每个小区可以对应一个或多个频点。或者说，每个小区可以看成是一个或多个频点的覆盖范围所形成的区域。
需要说明的是，小区可以是指网络设备的无线覆盖范围内的区域。在本申请实施例中，不同的小区可以对应相同的网络设备或者不同的网络设备。例如，小区#1所属的网络设备和小区#2所属的网络设备可以是相同的网络设备，如小区#1和小区#2可以由同一个基站来管理。或者，小区#1所属的网络设备和小区#2所属的网络设备可以是不同的网络设备，如小区#1和小区#2可以由不同的基站来管理。本申请实施例对此并不做具体限定。
切换(handover，HO)
在无线通信系统中(如LTE系统或NR系统等)，当正在使用网络服务的终端设备从一个小区移动到另一个小区，或由于无线传输业务负荷量调整、激活操作维护、设备故障等原因，为了保持终端设备的通信的连续性和服务的质量，系统需要将该终端设备与原小区的通信链路转移到新的小区上，即进行切换。
切换的类型可以有多种，例如，基于不同网络设备之间的接口，切换可以包括X2接口切换、Xn接口切换等。为了提高终端设备切换过程中的鲁棒性，切换还可以包括条件切换。
源小区和目标小区
在本申请实施例中，源小区可以表示切换前为终端设备提供服务的小区。目标小区可以表示切换后为终端设备提供服务的小区。
应理解，小区可以是指网络设备的覆盖区域，即小区与网络设备是对应的。换句话说，在本申请实施例中，源小区对应源网络设备(例如源基站)，目标小区对应目标网络设备(例如目标基站)。
还应理解，在本申请实施例中，“源小区”可以替换为“源小区所属的网络设备”，“目标小区”可以替换为“目标小区所属的网络设备”。
还应理解，在本申请实施例中，源小区与目标小区可能属于同一个网络设备(如基站)，或者，源小区和目标小区也可能属于不同的网络设备。换句话说，在一些实施例中，源网络设备和目标网络设备可以是指同一个网络设备。本申请实施例对此并不限定。
在本申请实施例中，源小区和目标小区可以通过不同的信息进行区分。作为示例而非限定，源小区和目标小区可以通过以下信息中的至少一项来区分：
(1)不同的小区标识。示例性地，小区标识可以是指小区全球标识(cell global identifier，CGI)，或者也可以是指物理小区标识(physical cell identifier，PCI)；(2)不同的传输接收点(transmission reception point，TRP)；(3)不同的参考信号集合；(4)不同的资源，比如不同的控制资源集(coreset)或者不同的控制资源集池(coreset pool)；(5)不同的混合自动重传请求(hybrid automatic repeat reQuest，HARQ)进程；(6)不同的协议栈，例如业务数据适配协议(service data adaptation protocol，SDAP)层的协议栈、分组数据汇聚层协议(packet data convergence protocol，PDCP)层的协议栈、无线链路控制(radio link control，RLC)的协议栈、媒体访问控制(medium access control，MAC)的协议栈、以及物理层(physical layer，PHY)的协议栈；(7)不同的传输配置指示(transmission configuration indication，TCI)状态。
下文提及的源小区、目标小区、源网络设备、目标网络设备，均可以参考上文的描述，下文不再赘述。
传统的切换流程中，整个切换过程可以分为三个阶段：切换准备、切换执行和切换完成。下面结合图2，以Xn接口切换过程为例，对传统的切换过程进行简单介绍。
第一阶段：切换准备(步骤1-步骤5)
在步骤1，源网络设备与终端设备之间进行测量控制及上报。具体地，源网络设备触发终端设备进行邻区测量，从而终端设备可以对邻区进行测量，并将测量结果上报给源网络设备。
在步骤2，源网络设备对终端设备上报的测量结果进行评估，决定是否触发切换。
在步骤3，若源网络设备决定触发切换，则可以向目标网络设备发送切换请求。
在步骤4，目标网络设备接收到源网络设备发送的切换请求后，可以根据源网络设备携带的业务信息开始准入，并进行无线资源配置。
在步骤5，目标网络设备向源网络设备发送切换请求确认消息。在切换请求确认消息中包含目标网络设备生成的切换命令，源网络设备不允许对目标网络设备生成的切换命令进行任何修改，直接将切换命令转发给终端设备。至此，切换准备阶段完成。
第二阶段：切换执行(步骤6-步骤8)
在步骤6，源网络设备接收到目标网络设备的切换请求确认消息后，可以触发终端设备进行切换。
在步骤7，源网络设备可以将缓冲数据、在传数据包、数据的关联序列号(sequence number，SN)等转发给目标网络设备。
此外，终端设备可以断开与源网络设备的连接，并与目标小区进行连接(如执行随机接入，发送无线资源控制(radio resource control，RRC)切换完成消息给目标网络设备等)。
在步骤8，终端设备同步到目标网络设备。至此，切换执行阶段完成。
第三阶段：切换完成(步骤9-步骤12)
在步骤9，目标网络设备向AMF发送路径切换(path switch)请求。
在步骤10，AMF接收到目标网络设备的路径切换请求后，与UPF执行路径切换，清除源网络设备用户面的路径标记。
在步骤11，在路径切换完成后，AMF可以向目标网络设备发送路径切换确认消息。
在步骤12，目标网络设备向源网络设备发送终端设备上下文释放消息，通知源网络设备切换成功，并触发源网络设备释放终端设备上下文。至此，切换完成。
在一些实施例中，对于某些特殊场景，比如终端设备高速移动或者高频条件下，需要频繁的进行切换。基于此，第三代合作伙伴计划(third generation partnership project，3GPP)在第16版本(release 16，R16)中引入了基于条件触发的切换过程(也可以称为条件切换(conditional handover，CHO))，可以避免切换准备时间过长，导致终端设备要切换的时候已经过晚的问题。
在条件切换中，一方面，可以为终端设备提前配置切换命令(handover command)。另一方面，对于高铁场景，终端设备的运行轨迹是特定的，所以源网络设备可以提前为终端设备配置目标网络设备，并且在切换命令中可以包含用于触发终端设备进行切换的条件。当该切换条件满足时，终端设备可以向目标网络设备发起接入请求。换句话说，条件切换可以支持在切换命令中配置多个候选小区，从而终端设备可以基于所配置的条件判断具体接入的目标小区。
具体地，条件切换的过程可以参见图3。如图3所示，在步骤301，源网络设备向终端设备发送测量配置信息，终端设备基于该测量配置进行测量上报。在步骤302，源网络设备与目标网络设备之间交互切换准备信息。在步骤303，源网络设备向终端设备发送条件切换命令，该条件切换命令中可以承载有小区的切换条件。在步骤304，当满足该条件切换命令时，终端设备实现与目标网络设备的同步。
但是，前文提及的传统的切换和条件切换都是基于终端设备上报以及网络设备配置的，终端设备和网络设备之间多条信令的交互导致切换时延较大。
为了解决上述问题，本申请实施例提供一种无线通信的方法，使得终端设备能够执行第一切换，第一切换为基于层一/层二的信令或测量触发的切换。第一切换为基于底层的切换，一方面可以减小信令开销，另一方面可以减少协议栈的传输层数，因此，第一切换是降低切换时延的解决方法之一。下面将结合附图对本申请实施例进行详细描述。
图4是本申请实施例提供的一种无线通信的方法的示意性流程图。图4的方法是从终端设备、源小区以及目标小区交互的角度进行描述的。该终端设备例如可以是图1所示的终端设备130，源小区对应源网络设备，目标小区对应目标网络设备，其中，源网络设备和目标网络设备例如可以是图1所示的网络设备110和120。源小区和目标小区的详细内容可以参见前文，此处不再赘述。
在步骤410，源小区向目标小区发送切换请求。该切换请求用于将终端设备从源小区切换到目标小区。
作为一种实现方式，源小区可以向一个或多个候选小区发送切换请求，其中，目标小区为该一个或多个候选小区中的一个小区。
在一些实施例中，候选小区接收到切换请求后，可以根据源小区携带的业务信息开始准入，并进行无线资源配置。
在一些实施例中，候选小区接收到切换请求后，还可以向源小区发送切换请求确认消息。
在一些实施例中，源小区接收到候选小区发送的切换请求确认消息后，可以基于该切换请求确认消息进行切换决策(第一切换决策)。
在步骤430，终端设备从源小区切换到目标小区。该切换为第一切换，其中，第一切换为基于层一/层二的信令或测量触发的切换。
作为一种实现方式，终端设备从源小区切换到目标小区可以是指，终端设备释放与源小区的连接，并同步到目标小区。示例性地，终端设备可以执行随机接入过程同步到目标小区，此外，终端设备可以向源小区发送RRC切换完成消息，以指示源小区断开与该终端设备的连接。
应该理解，在步骤430中，终端设备从源小区切换到目标小区，并不限定终端设备一定可以成功切换到目标小区，或者说并不限定终端设备一定可以成功接入目标小区。换句话说，在步骤430中，终端设备从源小区切换到目标小区可以表示，终端设备确定出可以切换的目标小区后，尝试进行切换或尝试接入该目标小区。
在本申请实施例中，终端设备可以执行基于层一/层二的信令或测量触发的第一切换，从而减小信令开销以及协议栈的传输层数，进而降低切换时延。
在一些实施例中，该切换(第一切换)是基于层一测量确定的。在另一些实施例中，该切换是基于层三测量确定的。有关层一测量和层三测量的具体内容，后文将会详细描述，此处暂不赘述。
在一些实施例中，该切换(第一切换)是基于终端设备接收的第一信息触发的，该第一信息用于指示终端设备从源小区切换到目标小区。换句话说，终端设备可以在接收到源小区发送的切换命令后，基于该切换命令，执行第一切换，从源小区切换到目标小区。可选地，该切换命令中可以包括目标小区的相关信息，例如包括目标小区的标识。
作为一种实现方式，终端设备确定出可以切换的目标小区后，可以上报给源小区，由源小区发送第一信息以指示终端设备进行切换。示例性地，当终端设备确定目标小区满足第一条件时，终端设备可以向源小区发送第二信息。源小区接收到第二信息后，可以基于该第二信息向终端设备发送第一信息(第一信息也可以称为，第二信息的响应信息)，该第一信息用于指示终端设备从源小区切换到目标小区。
在一些实施例中，该第二信息用于向源小区上报第一测量结果，其中，该第一测量结果可以为层一测量结果，或者也可以为层三测量结果。源小区接收到第一测量结果后，可以根据第一测量结果确定终端设备接入的目标小区。在一些实施例中，该第二信息可以为指示信息，用于指示有目标小区满足第一条件，源小区可以根据该指示信息确定终端设备接入的目标小区。该第一条件为终端设备确定该目标小区是否满足执行切换/测量上报的条件，关于第一条件的具体内容，后文将会详细介绍，此处暂不赘述。
在一些实施例中，第二信息可以包括用于表示目标小区身份的信息，例如，第二信息可以包括目标小区的标识(如CGI或PCI)。可选地，第二信息还可以包括目标小区的TCI状态，或者目标小区的波束相关信息等。
在一些实施例中，第一信息和第二信息可以承载于MAC层控制单元(control element，CE)消息中，可以简称为MAC CE消息。在一些实施例中，第一信息可以承载于下行控制信息(downlink control information，DCI)中，换句话说，源小区可以通过物理下行控制信道(physical downlink control channel，PDCCH)向终端设备发送第一信息；第二信息可以承载于上行控制信息(uplink control information，UCI) 中，换句话说，终端设备可以通过物理上行控制信道(physical uplink control channel，PUCCH)向源小区上报第二信息。
在一些实施例中，终端设备从源小区切换到目标小区是基于第一条件触发的，该第一条件为终端设备确定目标小区是否满足执行切换/测量上报的条件。换句话说，终端设备确定出可以切换的目标小区后，可以自主触发切换，从源小区切换到目标小区。具体地，作为一种实现方式，当终端设备确定目标小区满足第一条件时，终端设备可以断开与源小区的连接，并应用目标小区对应的配置，同步到该目标小区(例如执行随机接入)。
具体地，作为一种实现方式，终端设备可以根据某个候选小区对应的第一条件，判断该候选小区是否满足执行第一切换的第一条件，或者说，终端设备可以基于第一条件对候选小区进行评估。如果判断或评估结果是有某个或某些候选小区满足该第一条件，则该候选小区可以被确定为目标小区。进而，终端设备可以考虑切换到该目标小区。
需要说明的是，在一些实施例中，第一条件可以是一个或多个候选小区共用的。也就是说，在候选小区为多个的情况下，该多个候选小区可以对应相同的第一条件。在一些实施例中，第一条件也可以是针对小区级别的。也就是说，在候选小区为多个的情况下，多个候选小区可以有各自对应的第一条件。
在一些实施例中，当切换为基于层一测量的第一切换时，第一条件可以是针对层一测量的条件。作为示例而非限定，第一条件可以是误块率(block error ratio，BLER)、信道状态信息-参考信号(channel state information-reference signal，CSI-RS)、路损(pathloss)等针对层一测量的条件。示例性地，第一条件可以包括以下条件中的至少一种：
(1)第一波束集合中的至少一个波束满足第一阈值(也可以称为第一门限值，后文提及的阈值均可以称为门限值)。需要说明的是，该第一波束集合可以是针对源小区的波束集合，例如可以是指源小区的波束集合中的至少N个波束低于第一阈值，其中N为正整数。该第一波束集合也可以是针对目标小区的波束集合，例如可以是指目标小区的波束集合中的的至少N个波束高于第一阈值。需要说明的是，本申请实施例对第一波束集合中的信号类型不做具体限定，示例性地，第一波束集合可以包括以下信号中的至少一种：同步信号块(synchronization signal block，SSB)，或CSI-RS，或上行探测参考信号(sounding reference signal，SRS)等。
(2)源小区的连续N次BLER高于第二阈值，其中N为正整数。当源小区的BLER越高、且出现频率越高时，说明源小区的信号质量越差，此时可以考虑对终端设备进行切换。作为一个示例，当源小区的连续5次BLER超过3％时，终端设备从源小区切换到目标小区。需要说明的是，在一些实施例中，第一条件还可以是源小区在T时间内BLER高于第二阈值，T>0。作为一个示例，当源小区在2秒之内BLER均超过3％时，终端设备从源小区切换到目标小区。
(3)第一波束集合中的至少一个波束在T时间内的测量值低于/高于第三阈值，T>0。需要说明的是，该至少一个波束的测量值可以是针对源小区的测量值，例如可以是指源小区的CSI-RS的测量值低于第三阈值。该至少一个波束的测量值也可以是针对目标小区的测量值，例如可以是指目标小区的CSI-RS的测量值高于第三阈值。关于第一波束集合的具体内容，可以参见前文，此处不再赘述。
(4)源小区的测量值与目标小区的测量值的差值大于第四阈值。本申请对源小区的测量值和目标小区的测量值不做具体限定，例如可以是针对BLER，CSI-RS/SSB，路损的测量值。
在一些实施例中，源小区的测量值低于目标小区的测量值，且源小区的测量值与目标小区的测量值的差值大于第四阈值时，终端设备从源小区切换到目标小区，例如，当源小区的CSI-RS的测量值低于目标小区的CSI-RS的测量值第四阈值时，终端设备从源小区切换到目标小区。在一些实施例中，源小区的测量值高于目标小区的测量值，且源小区的测量值与目标小区的测量值的差值大于第四阈值时，终端设备从源小区切换到目标小区，例如，当源小区的BLER的测量值高于目标小区的BLER的测量值第四阈值时，终端设备从源小区切换到目标小区。
需要说明的是，如果采用源小区的测量值低于/高于目标小区的测量值这一条件时，源小区的测量值和目标小区的测量值应该是针对相同的测量信号的，例如，均是针对源小区和目标小区的CSI-RS的测量值进行比较，或者，均是针对源小区和目标小区的CSI-RS以及路损的测量值进行比较。
需要说明的是，在一些实施例中，第四阈值等于零。也就是说，只要目标小区的测量信号比源小区的测量信号好，则有可能执行终端设备从源小区切换到目标小区。在一些实施例中，第四阈值大于零。也就说，当目标小区的测量信号比源小区的测量信号好得多时，有可能执行终端设备从源小区切换到目标小区。
(5)源小区的测量值低于第五阈值，目标小区的测量值高于第六阈值。关于源小区的测量值和目标小区的测量值的相关描述，可以参考上文。需要说明的是，在一些实施例中，第五阈值等于第六阈值。也就是说，只要目标小区的测量信号比源小区的测量信号好，则有可能执行终端设备从源小区切换到目 标小区。在一些实施例中，第五阈值小于第六阈值。例如，当测量值是针对CSI-RS的测量值时，源小区的测量值可以低于第五阈值，目标小区的测量值可以高于第六阈值。
(6)源小区的测量值高于第七阈值，目标小区的测量值低于第八阈值。在该实施例中，第七阈值可以等于第八阈值，或者第七阈值可以大于第八阈值。例如，当测量值是针对BLER的测量时，源小区的测量值可以高于第七阈值，目标小区的测量值可以低于第八阈值。
在一些实施例中，当切换为基于层三测量的第一切换时，第一条件可以是针对层三测量的条件。在该实施例中，第一条件可以是针对层三的测量事件。作为示例而非限定，第一条件例如可以包括但不限于A1测量事件、A2测量事件、A3测量事件、A4测量事件、A5测量事件、B1测量事件或B2测量事件。其中，A3测量事件具体可以是指目标小区的小区信号质量比源小区的小区信号质量高出预设的第一阈值。A5测量事件具体可以是指，目标小区的小区信号质量高于预设的第二阈值，且源小区的小区信号质量低于预设的第三阈值。各测量事件的具体说明可以参考现有技术，为了简洁，此处不再一一详述。
在一些实施例中，源小区可以通过MAC CE消息向终端设备指示第一条件。在一些实施例中，源小区可以通过DCI向终端设备指示第一条件。
在一些实施例中，在步骤430之前，本申请实施例还可以包括步骤420。在步骤420，源小区向终端设备发送切换配置信息。该切换配置信息可以包括一个或多个候选小区的配置信息。
本申请实施例对候选小区的配置信息的具体内容不做限定。作为示例而非限定，候选小区的配置信息可以包括候选小区的标识(如CGI或PCI)、接入候选小区的随机接入信道(random access channel，RACH)资源信息、候选小区对应的频率信息、候选小区对应的物理层配置参数、MAC层配置参数、RLC层配置参数、RRC层配置参数、承载配置信息等。
在一些实施例中，源小区向终端设备发送的切换配置信息中，还包括一个或多个候选小区对应的第一条件。该第一条件为终端设备确定该一个或多个候选小区是否满足执行切换/测量上报的条件，有关第一条件的具体内容，可以参见上文，此处不再赘述。
在一些实施例中，切换配置信息是源小区通过高层信令发送给终端设备的。例如，该高层信令可以是RRC信令。作为一个示例，切换配置信息可以承载于RRC重配置消息中。
在一些实施例中，源小区和终端设备之间还可以进行测量控制及上报。示例性地，源小区可以触发终端设备进行邻区测量，终端设备对邻区测量之后，可以将测量结果上报给源小区。作为一个示例，终端设备进行邻区测量的内容可以包括测量频点、测量标识等，本申请对此并不限定。
在一些实施例中，终端设备向源小区上报测量结果之后，终端设备可以基于该测量结果和/或无线资源管理(radio resource management，RRM)信息决定切换。
在一些实施例中，源小区和目标小区可以通过不同的小区标识、不同的TRP、不同的参考信号集合、不同的资源、不同的HARQ进程、不同的协议栈、不同TCI状态等进行区分。
为了便于理解，下文基于图4描述的方法，具体结合图5-图8，给出本申请的无线通信方法几种可能的具体实施例。需要说明的是，下文的实施例中整个切换过程的步骤，只是示例性的说明，实质上不应作为对本申请的限定。例如，并不限定执行的先后顺序，也不限定必须要执行切换过程中的任一步骤等。
实施例1：层一测量+上报
图5为本申请实施例提供的另一种无线通信的方法的示意性流程图。
如图5所示，在步骤501，源小区与终端设备之间进行测量控制及上报。具体地，源小区可以为终端设备配置测量流程，终端设备根据该测量配置进行测量与上报。
在步骤502，源小区基于终端设备上报的测量结果和/或RRM信息决定是否触发切换。
在步骤503，若源小区决定触发切换，则可以向一个或多个候选小区发送切换请求。
在步骤504，候选小区接收到源小区发送的切换请求后，可以根据源小区携带的业务信息开始准入，并进行无线资源配置。
在步骤505，候选小区向源小区发送切换请求确认消息。
进而，源小区可以基于候选小区的切换请求确认消息进行第一切换决策。
在步骤506，源小区如果确认执行第一切换，可以在接收到候选小区的切换请求确认消息后，基于该切换请求确认消息，向终端设备发送第一切换配置，该切换配置可以承载于RRC重配置消息中。
可选地，该切换配置可以包括一个或多个候选小区的配置信息以及该一个或多个候选小区对应的第一条件。该第一条件可以用于终端设备评估该候选小区是否满足执行切换/测量上报的条件。
在步骤507，终端设备向源小区发送RRC重配置完成消息。此外，终端设备可以基于第一条件对源小区发送的一个或多个候选小区进行评估，判断其是否满足第一条件。
在该实施例中，该第一条件是基于层一的测量，比如可以是基于BLER、CSI-RS/SSB、路损的测量评估。关于第一条件的具体内容，可以参见前文。
在步骤508，当有候选小区满足第一条件时，终端设备可以向源小区发送第二信息，该第二信息可以用于上报第一测量结果(当前的测量结果)；或者，该第二信息可以是指示信息，用于指示当前有候选小区满足第一条件。
可选地，该第二信息中还可以包括满足第一条件的候选小区的标识。
可选地，该第二信息可以为MAC CE消息或者UCI。
在步骤509，源小区基于终端设备发送的第二信息，指示终端设备开始切换，其中，该切换命令用于指示终端设备切换到目标小区。可选地，该切换命令中可以包括目标小区的标识。
在步骤510，终端设备释放与源小区的连接，并应用目标小区的对应配置，同步到该目标小区，完成第一切换。
实施例2：层一测量+终端设备触发切换
图6为本申请实施例提供的另一种无线通信的方法的示意性流程图。
如图6所示，在步骤601，源小区与终端设备之间进行测量控制及上报。具体地，源小区可以为终端设备配置测量流程，终端设备根据该测量配置进行测量与上报。
在步骤602，源小区基于终端设备上报的测量结果和/或RRM信息决定是否触发切换。
在步骤603，若源小区决定触发切换，则可以向一个或多个候选小区发送切换请求。
在步骤604，候选小区接收到源小区发送的切换请求后，可以根据源小区携带的业务信息开始准入，并进行无线资源配置。
在步骤605，候选小区向源小区发送切换请求确认消息。
进而，源小区可以基于候选小区的切换请求确认消息进行第一切换决策。
在步骤606，源小区如果确认执行第一切换，可以在接收到候选小区的切换请求确认消息后，基于该切换请求确认消息，向终端设备发送第一切换配置，该切换配置可以承载于RRC重配置消息中。
可选地，该切换配置可以包括一个或多个候选小区的配置信息以及该一个或多个候选小区对应的第一条件。该第一条件可以用于终端设备评估该候选小区是否满足执行切换/测量上报的条件。
在步骤607，终端设备向源小区发送RRC重配置完成消息。此外，终端设备可以基于第一条件对源小区发送的一个或多个候选小区进行评估，判断其是否满足第一条件。
在该实施例中，该第一条件是基于层一的测量，比如可以是基于BLER、CSI-RS/SSB、路损的测量评估。关于第一条件的具体内容，可以参见前文。
在步骤608，当有候选小区满足第一条件时，终端设备以该候选小区作为目标小区，释放与源小区的连接，并应用该目标小区的对应配置，同步到该目标小区，完成第一切换。
实施例3：层三测量+上报
图7为本申请实施例提供的另一种无线通信的方法的示意性流程图。
如图7所示，在步骤701，源小区与终端设备之间进行测量控制及上报。具体地，源小区可以为终端设备配置测量流程，终端设备根据该测量配置进行测量与上报。
在步骤702，源小区基于终端设备上报的测量结果和/或RRM信息决定是否触发切换。
在步骤703，若源小区决定触发切换，则可以向一个或多个候选小区发送切换请求。
在步骤704，候选小区接收到源小区发送的切换请求后，可以根据源小区携带的业务信息开始准入，并进行无线资源配置。
在步骤705，候选小区向源小区发送切换请求确认消息。
进而，源小区可以基于候选小区的切换请求确认消息进行第一切换决策。
在步骤706，源小区如果确认执行第一切换，可以在接收到候选小区的切换请求确认消息后，基于该切换请求确认消息，向终端设备发送第一切换配置，该切换配置可以承载于RRC重配置消息中。
可选地，该切换配置可以包括一个或多个候选小区的配置信息以及该一个或多个候选小区对应的第一条件。该第一条件可以用于终端设备评估该候选小区是否满足执行切换/测量上报的条件。
在步骤707，终端设备向源小区发送RRC重配置完成消息。此外，终端设备可以基于第一条件对源小区发送的一个或多个候选小区进行评估，判断其是否满足第一条件。
在该实施例中，该第一条件是基于层三的测量，比如可以是A3测量事件或A5测量事件。关于第一条件的具体内容，可以参见前文。
在步骤708，当有候选小区满足第一条件时，终端设备可以向源小区发送第二信息，该第二信息可以用于上报第一测量结果(当前的测量结果)；或者，该第二信息可以是指示信息，用于指示当前有候选小区满足第一条件。
可选地，该第二信息中还可以包括满足第一条件的候选小区的标识。
可选地，该第二信息可以为MAC CE消息或者UCI。
在步骤709，源小区基于终端设备发送的第二信息，指示终端设备开始切换，其中，该切换命令用于指示终端设备切换到目标小区。可选地，该切换命令中可以包括目标小区的标识。
在步骤710，终端设备释放与源小区的连接，并应用目标小区的对应配置，同步到该目标小区，完成第一切换。
实施例4：层三测量+终端设备触发切换
图8为本申请实施例提供的另一种无线通信的方法的示意性流程图。
如图8所示，在步骤801，源小区与终端设备之间进行测量控制及上报。具体地，源小区可以为终端设备配置测量流程，终端设备根据该测量配置进行测量与上报。
在步骤802，源小区基于终端设备上报的测量结果和/或RRM信息决定是否触发切换。
在步骤803，若源小区决定触发切换，则可以向一个或多个候选小区发送切换请求。
在步骤804，候选小区接收到源小区发送的切换请求后，可以根据源小区携带的业务信息开始准入，并进行无线资源配置。
在步骤805，候选小区向源小区发送切换请求确认消息。
进而，源小区可以基于候选小区的切换请求确认消息进行第一切换决策。
在步骤806，源小区如果确认执行第一切换，可以在接收到候选小区的切换请求确认消息后，基于该切换请求确认消息，向终端设备发送第一切换配置，该切换配置可以承载于RRC重配置消息中。
可选地，该切换配置可以包括一个或多个候选小区的配置信息以及该一个或多个候选小区对应的第一条件。该第一条件可以用于终端设备评估该候选小区是否满足执行切换/测量上报的条件。
在步骤807，终端设备向源小区发送RRC重配置完成消息。此外，终端设备可以基于第一条件对源小区发送的一个或多个候选小区进行评估，判断其是否满足第一条件。
在该实施例中，该第一条件是基于层三的测量，比如可以是A3测量事件或A5测量事件。关于第一条件的具体内容，可以参见前文。
在步骤808，当有候选小区满足第一条件时，终端设备以该候选小区作为目标小区，释放与源小区的连接，并应用该目标小区的对应配置，同步到该目标小区，完成第一切换。
上文结合图1至图8，详细描述了本申请的方法实施例，下面结合图9至图12，详细描述本申请的装置实施例。应理解，方法实施例的描述与装置实施例的描述相互对应，因此，未详细描述的部分可以参见前面方法实施例。
图9是本申请一个实施例提供的终端设备的示意性结构框图。图9所示的终端设备900可以包括切换模块910。
切换模块910可以用于从源小区切换到目标小区，该切换为第一切换，该第一切换为基于层一/层二的信令或测量触发的切换。
可选地，该切换是基于层一测量或者层三测量确定的。
可选地，该切换是基于终端设备接收的第一信息触发的，该第一信息用于指示终端设备从源小区切换到目标小区。
可选地，第一信息承载于媒体接入控制MAC层控制单元MAC CE消息或下行控制信息DCI中。
可选地，终端设备900还可以包括发送模块920。发送模块920可以用于向源小区发送第二信息，该第二信息用于上报第一测量结果，第一测量结果包括层一测量结果或层三测量结果，或者，该第二信息用于指示目标小区满足第一条件，该第一条件为终端设备确定目标小区是否满足执行切换/测量上报的条件。
可选地，第二信息承载于MAC CE消息或上行控制信息UCI中。
可选地，第二信息包括以下信息中的至少一种：目标小区的标识，目标小区的传输配置指示TCI状态，或目标小区的波束相关信息。
可选地，切换是基于第一条件触发的，该第一条件为终端设备确定目标小区是否满足执行切换/测量上报的条件。
可选地，切换是基于层一测量确定的，第一条件包括以下条件中的至少一种：第一波束集合中的至少一个波束满足第一阈值；源小区的连续N次误块率BLER高于第二阈值，其中N为正整数；第一波束集合中的至少一个波束在T时间内的测量值低于/高于第三阈值，T>0；源小区的测量值与目标小区的测量值的差值大于第四阈值；源小区的测量值低于第五阈值，目标小区的测量值高于第六阈值；或者，源小区的测量值高于第七阈值，目标小区的测量值低于第八阈值。
可选地，第一波束集合包括以下至少一种：同步信号块SSB；信道状态信息-参考信号CSI-RS，或 上行探测参考信号SRS。
可选地，切换是基于层三测量确定的，第一条件包括A3测量事件或A5测量事件。
可选地，终端设备还可以包括接收模块930。接收模块930可以用于接收源小区发送的切换配置信息，该切换配置信息包括至少一个候选小区的配置信息，其中，目标小区为该至少一个候选小区中的一个小区。
可选地，切换配置信息还包括至少一个候选小区对应的第一条件，该第一条件为终端设备确定该至少一个候选小区是否满足执行切换/测量上报的条件。
可选地，切换配置信息承载于无线资源控制RRC重配置消息中。
可选地，源小区和目标小区是通过以下至少一项来区分的：不同的小区标识；不同的传输接收点TRP；不同的参考信号集合；不同的资源；不同的混合自动重传请求HARQ进程；不同的协议栈；或者，不同的TCI状态。
图9所示的终端设备900可以用于实现图4-图8所示的任意一种无线通信方法，其实现过程与前文方法相关的内容相同，具体可以参考图4-图8所示的实施例，此处不再赘述。
图10是本申请一个实施例提供的网络设备的示意性结构框图。图10所示的网络设备可以是源小区所属的网络设备。该网络设备1000可以包括第一发送模块1010。
第一发送模块1010可以用于向目标小区发送切换请求，该切换请求用于将终端设备从源小区切换到目标小区，该切换为第一二切换，该第一切换为基于层一/层二的信令或测量触发的切换。
可选地，该切换是基于层一测量或者层三测量确定的。
可选地，该切换是基于终端设备接收的第一信息触发的，该第一信息用于指示终端设备从源小区切换到目标小区。
可选地，第一信息承载于媒体接入控制MAC层控制单元MAC CE消息或下行控制信息DCI中。
可选地，网络设备1000还可以包括接收模块1020。接收模块1020可以用于接收终端设备发送的第二信息，该第二信息用于上报第一测量结果，第一测量结果包括层一测量结果或层三测量结果，或者，该第二信息用于指示目标小区满足第一条件，第一条件为终端设备确定目标小区是否满足执行切换/测量上报的条件。
可选地，第二信息承载于MAC CE消息或上行控制信息UCI中。
可选地，第二信息包括以下信息中的至少一种：目标小区的标识，目标小区的传输配置指示TCI状态，或目标小区的波束相关信息。
可选地，切换是基于第一条件触发的，该第一条件为终端设备确定目标小区是否满足执行切换/测量上报的条件。
可选地，切换是基于层一测量确定的，第一条件包括以下条件中的至少一种：第一波束集合中的至少一个波束满足第一阈值；源小区的连续N次误块率BLER高于第二阈值，其中N为正整数；第一波束集合中的至少一个波束在T时间内的测量值低于/高于第三阈值，T>0；源小区的测量值与目标小区的测量值的差值大于第四阈值；源小区的测量值低于第五阈值，目标小区的测量值高于第六阈值；或者，源小区的测量值高于第七阈值，目标小区的测量值低于第八阈值。
可选地，第一波束集合包括以下至少一种：同步信号块SSB；信道状态信息-参考信号CSI-RS，或上行探测参考信号SRS。
可选地，切换是基于层三测量确定的，第一条件包括A3测量事件或A5测量事件。
可选地，网络设备1000还可以包括第二发送模块1030。发送模块1030可以用于向终端设备发送切换配置信息，该切换配置信息包括至少一个候选小区的配置信息，其中，目标小区为该至少一个候选小区中的一个小区。
可选地，切换配置信息还包括至少一个候选小区对应的第一条件，该第一条件为终端设备确定该至少一个候选小区是否满足执行切换/测量上报的条件。
可选地，切换配置信息承载于无线资源控制RRC重配置消息中。
可选地，源小区和目标小区是通过以下至少一项来区分的：不同的小区标识；不同的传输接收点TRP；不同的参考信号集合；不同的资源；不同的混合自动重传请求HARQ进程；不同的协议栈；或者，不同的TCI状态。
图10所示的网络设备1000可以用于实现图4-图8所示的任意一种无线通信方法，其实现过程与前文方法相关的内容相同，具体可以参考图4-图8所示的实施例，此处不再赘述。
图11是本申请另一个实施例提供的网络设备的示意性结构框图。图11所示的网络设备可以是目标小区所属的网络设备。该网络设备1100可以包括接收模块1110。
接收模块1110可以用于接收源小区发送的切换请求，该切换请求用于将终端设备从源小区切换到 目标小区，该切换为第一切换，该第一切换为基于层一/层二的信令或测量触发的切换。
可选地，该切换是基于层一测量或者层三测量确定的。
可选地，该切换是基于终端设备接收的第一信息触发的，该第一信息用于指示终端设备从源小区切换到目标小区。
可选地，第一信息承载于媒体接入控制MAC层控制单元MAC CE消息或下行控制信息DCI中。
可选地，切换是基于第一条件触发的，该第一条件为终端设备确定目标小区是否满足执行切换/测量上报的条件。
可选地，切换是基于层一测量确定的，第一条件包括以下条件中的至少一种：第一波束集合中的至少一个波束满足第一阈值；源小区的连续N次误块率BLER高于第二阈值，其中N为正整数；第一波束集合中的至少一个波束在T时间内的测量值低于/高于第三阈值，T>0；源小区的测量值与目标小区的测量值的差值大于第四阈值；源小区的测量值低于第五阈值，目标小区的测量值高于第六阈值；或者，源小区的测量值高于第七阈值，目标小区的测量值低于第八阈值。
可选地，第一波束集合包括以下至少一种：同步信号块SSB；信道状态信息-参考信号CSI-RS，或上行探测参考信号SRS。
可选地，切换是基于层三测量确定的，第一条件包括A3测量事件或A5测量事件。
可选地，网络设备1100还可以包括发送模块1120。发送模块1120可以用于向源小区发送切换请求的响应消息，该切换请求的响应消息中包括目标小区的配置信息。
可选地，源小区和目标小区是通过以下至少一项来区分的：不同的小区标识；不同的传输接收点TRP；不同的参考信号集合；不同的资源；不同的混合自动重传请求HARQ进程；不同的协议栈；或者，不同的TCI状态。
图11所示的网络设备1100可以用于实现图4-图8所示的任意一种无线通信方法，其实现过程与前文方法相关的内容相同，具体可以参考图4-图8所示的实施例，此处不再赘述。
图12是本申请实施例的通信装置的示意性结构图。图12中的虚线表示该单元或模块为可选的。该装置1200可用于实现上述方法实施例中描述的方法。装置1200可以是芯片、终端设备或网络设备。
装置1200可以包括一个或多个处理器1210。该处理器1210可支持装置1200实现前文方法实施例所描述的方法。该处理器1210可以是通用处理器或者专用处理器。例如，该处理器可以为中央处理单元(central processing unit，CPU)。或者，该处理器还可以是其他通用处理器、数字信号处理器(digital signal processor，DSP)、专用集成电路(application specific integrated circuit，ASIC)、现成可编程门阵列(field programmable gate array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
装置1200还可以包括一个或多个存储器1220。存储器1220上存储有程序，该程序可以被处理器1210执行，使得处理器1210执行前文方法实施例所描述的方法。存储器1220可以独立于处理器1210也可以集成在处理器1210中。
装置1200还可以包括收发器1230。处理器1210可以通过收发器1230与其他设备或芯片进行通信。例如，处理器1210可以通过收发器1230与其他设备或芯片进行数据收发。
本申请实施例还提供一种计算机可读存储介质，用于存储程序。该计算机可读存储介质可应用于本申请实施例提供的终端或网络设备中，并且该程序使得计算机执行本申请各个实施例中的由终端或网络设备执行的方法。
本申请实施例还提供一种计算机程序产品。该计算机程序产品包括程序。该计算机程序产品可应用于本申请实施例提供的终端或网络设备中，并且该程序使得计算机执行本申请各个实施例中的由终端或网络设备执行的方法。
本申请实施例还提供一种计算机程序。该计算机程序可应用于本申请实施例提供的终端或网络设备中，并且该计算机程序使得计算机执行本申请各个实施例中的由终端或网络设备执行的方法。
应理解，本申请中术语“系统”和“网络”可以被可互换使用。另外，本申请使用的术语仅用于对本申请的具体实施例进行解释，而非旨在限定本申请。本申请的说明书和权利要求书及所述附图中的术语“第一”、“第二”、“第三”和“第四”等是用于区别不同对象，而不是用于描述特定顺序。此外，术语“包括”和“具有”以及它们任何变形，意图在于覆盖不排他的包含。
在本申请的实施例中，提到的“指示”可以是直接指示，也可以是间接指示，还可以是表示具有关联关系。举例说明，A指示B，可以表示A直接指示B，例如B可以通过A获取；也可以表示A间接指示B，例如A指示C，B可以通过C获取；还可以表示A和B之间具有关联关系。
在本申请实施例中，“与A相应的B”表示B与A相关联，根据A可以确定B。但还应理解，根据A确定B并不意味着仅仅根据A确定B，还可以根据A和/或其它信息确定B。
在本申请实施例中，术语“对应”可表示两者之间具有直接对应或间接对应的关系，也可以表示两者之间具有关联关系，也可以是指示与被指示、配置与被配置等关系。
本申请实施例中，“预定义”或“预配置”可以通过在设备(例如，包括终端设备和网络设备)中预先保存相应的代码、表格或其他可用于指示相关信息的方式来实现，本申请对于其具体的实现方式不做限定。比如预定义可以是指协议中定义的。
本申请实施例中，所述“协议”可以指通信领域的标准协议，例如可以包括LTE协议、NR协议以及应用于未来的通信系统中的相关协议，本申请对此不做限定。
本申请实施例中术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。
在本申请的各种实施例中，上述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本申请实施例的实施过程构成任何限定。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(digital subscriber line，DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够读取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质，(例如，软盘、硬盘、磁带)、光介质(例如，数字通用光盘(digital video disc，DVD))或者半导体介质(例如，固态硬盘(solid state disk，SSD))等。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (92)

  1. 一种无线通信的方法，其特征在于，包括：
    终端设备从源小区切换到目标小区，所述切换为第一切换，所述第一切换为基于层一/层二的信令或测量触发的切换。
  2. 根据权利要求1所述的方法，其特征在于，所述切换是基于层一测量或者层三测量确定的。
  3. 根据权利要求1或2所述的方法，其特征在于，所述切换是基于所述终端设备接收的第一信息触发的，所述第一信息用于指示所述终端设备从所述源小区切换到所述目标小区。
  4. 根据权利要求3所述的方法，其特征在于，所述第一信息承载于媒体接入控制MAC层控制单元MAC CE消息或下行控制信息DCI中。
  5. 根据权利要求3或4所述的方法，其特征在于，所述方法还包括：
    所述终端设备向所述源小区发送第二信息，所述第二信息用于上报第一测量结果，所述第一测量结果包括层一测量结果或层三测量结果，或者，所述第二信息用于指示所述目标小区满足第一条件，所述第一条件为所述终端设备确定所述目标小区是否满足执行所述切换/测量上报的条件。
  6. 根据权利要求5所述的方法，其特征在于，所述第二信息承载于MAC CE消息或上行控制信息UCI中。
  7. 根据权利要求5或6所述的方法，其特征在于，所述第二信息包括以下信息中的至少一种：所述目标小区的标识，所述目标小区的传输配置指示TCI状态，或所述目标小区的波束相关信息。
  8. 根据权利要求1或2所述的方法，其特征在于，所述切换是基于第一条件触发的，所述第一条件为所述终端设备确定所述目标小区是否满足执行所述切换/测量上报的条件。
  9. 根据权利要求5-8中任一项所述的方法，其特征在于，所述切换是基于层一测量确定的，所述第一条件包括以下条件中的至少一种：
    第一波束集合中的至少一个波束满足第一阈值；
    所述源小区的连续N次误块率BLER高于第二阈值，其中N为正整数；
    第一波束集合中的至少一个波束在T时间内的测量值低于/高于第三阈值，T>0；
    所述源小区的测量值与所述目标小区的测量值的差值大于第四阈值；
    所述源小区的测量值低于第五阈值，所述目标小区的测量值高于第六阈值；或者，
    所述源小区的测量值高于第七阈值，所述目标小区的测量值低于第八阈值。
  10. 根据权利要求9所述的方法，其特征在于，所述第一波束集合包括以下至少一种：
    同步信号块SSB；
    信道状态信息-参考信号CSI-RS，或
    上行探测参考信号SRS。
  11. 根据权利要求5-8中任一项所述的方法，其特征在于，所述切换是基于层三测量确定的，所述第一条件包括A3测量事件或A5测量事件。
  12. 根据权利要求1-11中任一项所述的方法，其特征在于，在所述终端设备从源小区切换到目标小区之前，所述方法还包括：
    所述终端设备接收所述源小区发送的切换配置信息，所述切换配置信息包括至少一个候选小区的配置信息，其中，所述目标小区为所述至少一个候选小区中的一个小区。
  13. 根据权利要求12所述的方法，其特征在于，所述切换配置信息还包括所述至少一个候选小区对应的第一条件，所述第一条件为所述终端设备确定所述至少一个候选小区是否满足执行所述切换/测量上报的条件。
  14. 根据权利要求12或13所述的方法，其特征在于，所述切换配置信息承载于无线资源控制RRC重配置消息中。
  15. 根据权利要求1-14中任一项所述的方法，其特征在于，所述源小区和所述目标小区是通过以下至少一项来区分的：
    不同的小区标识；
    不同的传输接收点TRP；
    不同的参考信号集合；
    不同的资源；
    不同的混合自动重传请求HARQ进程；
    不同的协议栈；或者，
    不同的TCI状态。
  16. 一种无线通信的方法，其特征在于，包括：
    源小区向目标小区发送切换请求，所述切换请求用于将终端设备从所述源小区切换到所述目标小区，所述切换为第一切换，所述第一切换为基于层一/层二的信令或测量触发的切换。
  17. 根据权利要求16所述的方法，其特征在于，所述切换是基于层一测量或者层三测量确定的。
  18. 根据权利要求16或17所述的方法，其特征在于，所述切换是基于所述终端设备接收的第一信息触发的，所述第一信息用于指示所述终端设备从所述源小区切换到所述目标小区。
  19. 根据权利要求18所述的方法，其特征在于，所述第一信息承载于媒体接入控制MAC层控制单元MAC CE消息或下行控制信息DCI中。
  20. 根据权利要求18或19所述的方法，其特征在于，所述方法还包括：
    所述源小区接收所述终端设备发送的第二信息，所述第二信息用于上报第一测量结果，所述第一测量结果包括层一测量结果或层三测量结果，或者，所述第二信息用于指示所述目标小区满足第一条件，所述第一条件为所述终端设备确定所述目标小区是否满足执行所述切换/测量上报的条件。
  21. 根据权利要求20所述的方法，其特征在于，所述第二信息承载于MAC CE消息或上行控制信息UCI中。
  22. 根据权利要求20或21所述的方法，其特征在于，所述第二信息包括以下信息中的至少一种：所述目标小区的标识，所述目标小区的传输配置指示TCI状态，或所述目标小区的波束相关信息。
  23. 根据权利要求16或17所述的方法，其特征在于，所述切换是基于第一条件触发的，所述第一条件为所述终端设备确定所述目标小区是否满足执行所述切换/测量上报的条件。
  24. 根据权利要求20-23中任一项所述的方法，其特征在于，所述切换是基于层一测量确定的，所述第一条件包括以下条件中的至少一种：
    第一波束集合中的至少一个波束满足第一阈值；
    所述源小区的连续N次误块率BLER高于第二阈值，其中N为正整数；
    第一波束集合中的至少一个波束在T时间内的测量值低于/高于第三阈值，T>0；
    所述源小区的测量值与所述目标小区的测量值的差值大于第四阈值；
    所述源小区的测量值低于第五阈值，所述目标小区的测量值高于第六阈值；或者，
    所述源小区的测量值高于第七阈值，所述目标小区的测量值低于第八阈值。
  25. 根据权利要求24所述的方法，其特征在于，所述第一波束集合包括以下至少一种：
    同步信号块SSB；
    信道状态信息-参考信号CSI-RS，或
    上行探测参考信号SRS。
  26. 根据权利要求20-23中任一项所述的方法，其特征在于，所述切换是基于层三测量确定的，所述第一条件包括A3测量事件或A5测量事件。
  27. 根据权利要求16-26中任一项所述的方法，其特征在于，所述方法还包括：
    所述源小区向所述终端设备发送切换配置信息，所述切换配置信息包括至少一个候选小区的配置信息，其中，所述目标小区为所述至少一个候选小区中的一个小区。
  28. 根据权利要求27所述的方法，其特征在于，所述切换配置信息还包括所述至少一个候选小区对应的第一条件，所述第一条件为所述终端设备确定所述至少一个候选小区是否满足执行所述切换/测量上报的条件。
  29. 根据权利要求27或28所述的方法，其特征在于，所述切换配置信息承载于无线资源控制RRC重配置消息中。
  30. 根据权利要求16-29中任一项所述的方法，其特征在于，所述源小区和所述目标小区是通过以下至少一项来区分的：
    不同的小区标识；
    不同的传输接收点TRP；
    不同的参考信号集合；
    不同的资源；
    不同的混合自动重传请求HARQ进程；
    不同的协议栈；或者，
    不同的TCI状态。
  31. 一种无线通信的方法，其特征在于，包括：
    目标小区接收源小区发送的切换请求，所述切换请求用于将终端设备从所述源小区切换到所述目标小区，所述切换为第一切换，所述第一切换为基于层一/层二的信令或测量触发的切换。
  32. 根据权利要求31所述的方法，其特征在于，所述切换是基于层一测量或者层三测量确定的。
  33. 根据权利要求31或32所述的方法，其特征在于，所述切换是基于所述终端设备接收的第一信息触发的，所述第一信息用于指示所述终端设备从所述源小区切换到所述目标小区。
  34. 根据权利要求33所述的方法，其特征在于，所述第一信息承载于媒体接入控制MAC层控制单元MAC CE消息或下行控制信息DCI中。
  35. 根据权利要求31或32所述的方法，其特征在于，所述切换是基于第一条件触发的，所述第一条件为所述终端设备确定所述目标小区是否满足执行所述切换/测量上报的条件。
  36. 根据权利要求35所述的方法，其特征在于，所述切换是基于层一测量确定的，所述第一条件包括以下条件中的至少一种：
    第一波束集合中的至少一个波束的满足第一阈值；
    所述源小区的连续N次误块率BLER高于第二阈值，其中N为正整数；
    第一波束集合中的至少一个波束在T时间内的测量值低于/高于第三阈值，T>0；
    所述源小区的测量值与所述目标小区的测量值的差值大于第四阈值；
    所述源小区的测量值低于第五阈值，所述目标小区的测量值高于第六阈值；或者，
    所述源小区的测量值高于第七阈值，所述目标小区的测量值低于第八阈值。
  37. 根据权利要求36所述的方法，其特征在于，所述第一波束集合包括以下至少一种：
    同步信号块SSB；
    信道状态信息-参考信号CSI-RS，或
    上行探测参考信号SRS。
  38. 根据权利要求35所述的方法，其特征在于，所述切换是基于层三测量确定的，所述第一条件包括A3测量事件或A5测量事件。
  39. 根据权利要求31-38中任一项所述的方法，其特征在于，所述方法还包括：
    所述目标小区向所述源小区发送所述切换请求的响应消息，所述切换请求的响应消息中包括所述目标小区的配置信息。
  40. 根据权利要求31-39中任一项所述的方法，其特征在于，所述源小区和所述目标小区是通过以下至少一项来区分的：
    不同的小区标识；
    不同的传输接收点TRP；
    不同的参考信号集合；
    不同的资源；
    不同的混合自动重传请求HARQ进程；
    不同的协议栈；或者，
    不同的TCI状态。
  41. 一种终端设备，其特征在于，包括：
    切换模块，用于从源小区切换到目标小区，所述切换为第一切换，所述第一切换为基于层一/层二的信令或测量触发的切换。
  42. 根据权利要求40所述的终端设备，其特征在于，所述切换是基于层一测量或者层三测量确定的。
  43. 根据权利要求41或42所述的终端设备，其特征在于，所述切换是基于所述终端设备接收的第一信息触发的，所述第一信息用于指示所述终端设备从所述源小区切换到所述目标小区。
  44. 根据权利要求43所述的终端设备，其特征在于，所述第一信息承载于媒体接入控制MAC层控制单元MAC CE消息或下行控制信息DCI中。
  45. 根据权利要求43或44所述的终端设备，其特征在于，所述终端设备还包括：
    发送模块，用于向所述源小区发送第二信息，所述第二信息用于上报第一测量结果，所述第一测量结果包括层一测量结果或层三测量结果，或者，所述第二信息用于指示所述目标小区满足第一条件，所述第一条件为所述终端设备确定所述目标小区是否满足执行所述切换/测量上报的条件。
  46. 根据权利要求45所述的终端设备，其特征在于，所述第二信息承载于MAC CE消息或上行控制信息UCI中。
  47. 根据权利要求45或46所述的终端设备，其特征在于，所述第二信息包括以下信息中的至少一种：所述目标小区的标识，所述目标小区的传输配置指示TCI状态，或所述目标小区的波束相关信息。
  48. 根据权利要求41或42所述的终端设备，其特征在于，所述切换是基于第一条件触发的，所述第一条件为所述终端设备确定所述目标小区是否满足执行所述切换/测量上报的条件。
  49. 根据权利要求45-48中任一项所述的终端设备，其特征在于，所述切换是基于层一测量确定的，所述第一条件包括以下条件中的至少一种：
    第一波束集合中的至少一个波束满足第一阈值；
    所述源小区的连续N次误块率BLER高于第二阈值，其中N为正整数；
    第一波束集合中的至少一个波束在T时间内的测量值低于/高于第三阈值，T>0；
    所述源小区的测量值与所述目标小区的测量值的差值大于第四阈值；
    所述源小区的测量值低于第五阈值，所述目标小区的测量值高于第六阈值；或者，
    所述源小区的测量值高于第七阈值，所述目标小区的测量值低于第八阈值。
  50. 根据权利要求49所述的终端设备，其特征在于，所述第一波束集合包括以下至少一种：
    同步信号块SSB；
    信道状态信息-参考信号CSI-RS，或
    上行探测参考信号SRS。
  51. 根据权利要求45-48中任一项所述的终端设备，其特征在于，所述切换是基于层三测量确定的，所述第一条件包括A3测量事件或A5测量事件。
  52. 根据权利要求41-51中任一项所述的终端设备，其特征在于，所述终端设备还包括：
    接收模块，用于接收所述源小区发送的切换配置信息，所述切换配置信息包括至少一个候选小区的配置信息，其中，所述目标小区为所述至少一个候选小区中的一个小区。
  53. 根据权利要求52所述的终端设备，其特征在于，所述切换配置信息还包括所述至少一个候选小区对应的第一条件，所述第一条件为所述终端设备确定所述至少一个候选小区是否满足执行所述切换/测量上报的条件。
  54. 根据权利要求52或53所述的终端设备，其特征在于，所述切换配置信息承载于无线资源控制RRC重配置消息中。
  55. 根据权利要求41-54中任一项所述的终端设备，其特征在于，所述源小区和所述目标小区是通过以下至少一项来区分的：
    不同的小区标识；
    不同的传输接收点TRP；
    不同的参考信号集合；
    不同的资源；
    不同的混合自动重传请求HARQ进程；
    不同的协议栈；或者，
    不同的TCI状态。
  56. 一种网络设备，其特征在于，所述网络设备为源小区所属的网络设备，所述网络设备包括：
    第一发送模块，用于向目标小区发送切换请求，所述切换请求用于将终端设备从所述源小区切换到所述目标小区，所述切换为第一切换，所述第一切换为基于层一/层二的信令或测量触发的切换。
  57. 根据权利要求56所述的网络设备，其特征在于，所述切换是基于层一测量或者层三测量确定的。
  58. 根据权利要求56或57所述的网络设备，其特征在于，所述切换是基于所述终端设备接收的第一信息触发的，所述第一信息用于指示所述终端设备从所述源小区切换到所述目标小区。
  59. 根据权利要求58所述的网络设备，其特征在于，所述第一信息承载于媒体接入控制MAC层控制单元MAC CE消息或下行控制信息DCI中。
  60. 根据权利要求58或59所述的网络设备，其特征在于，所述网络设备还包括：
    接收模块，用于接收所述终端设备发送的第二信息，所述第二信息用于上报第一测量结果，所述第一测量结果包括层一测量结果或层三测量结果，或者，所述第二信息用于指示所述目标小区满足第一条件，所述第一条件为所述终端设备确定所述目标小区是否满足执行所述切换/测量上报的条件。
  61. 根据权利要求60所述的网络设备，其特征在于，所述第二信息承载于MAC CE消息或上行控制信息UCI中。
  62. 根据权利要求60或61所述的网络设备，其特征在于，所述第二信息包括以下信息中的至少一种：所述目标小区的标识，所述目标小区的传输配置指示TCI状态，或所述目标小区的波束相关信息。
  63. 根据权利要求56或57所述的网络设备，其特征在于，所述切换是基于第一条件触发的，所述第一条件为所述终端设备确定所述目标小区是否满足执行所述切换/测量上报的条件。
  64. 根据权利要求60-63中任一项所述的网络设备，其特征在于，所述切换是基于层一测量确定的，所述第一条件包括以下条件中的至少一种：
    第一波束集合中的至少一个波束满足第一阈值；
    所述源小区的连续N次误块率BLER高于第二阈值，其中N为正整数；
    第一波束集合中的至少一个波束在T时间内的测量值低于/高于第三阈值，T>0；
    所述源小区的测量值与所述目标小区的测量值的差值大于第四阈值；
    所述源小区的测量值低于第五阈值，所述目标小区的测量值高于第六阈值；或者，
    所述源小区的测量值高于第七阈值，所述目标小区的测量值低于第八阈值。
  65. 根据权利要求64所述的网络设备，其特征在于，所述第一波束集合包括以下至少一种：
    同步信号块SSB；
    信道状态信息-参考信号CSI-RS，或
    上行探测参考信号SRS。
  66. 根据权利要求60-63中任一项所述的网络设备，其特征在于，所述切换是基于层三测量确定的，所述第一条件包括A3测量事件或A5测量事件。
  67. 根据权利要求56-66中任一项所述的网络设备，其特征在于，所述网络设备还包括：
    第二发送模块，用于向所述终端设备发送切换配置信息，所述切换配置信息包括至少一个候选小区的配置信息，其中，所述目标小区为所述至少一个候选小区中的一个小区。
  68. 根据权利要求67所述的网络设备，其特征在于，所述切换配置信息还包括所述至少一个候选小区对应的第一条件，所述第一条件为所述终端设备确定所述至少一个候选小区是否满足执行所述切换/测量上报的条件。
  69. 根据权利要求67或68所述的网络设备，其特征在于，所述切换配置信息承载于无线资源控制RRC重配置消息中。
  70. 根据权利要求56-69中任一项所述的网络设备，其特征在于，所述源小区和所述目标小区是通过以下至少一项来区分的：
    不同的小区标识；
    不同的传输接收点TRP；
    不同的参考信号集合；
    不同的资源；
    不同的混合自动重传请求HARQ进程；
    不同的协议栈；或者，
    不同的TCI状态。
  71. 一种网络设备，其特征在于，所述网络设备为目标小区所属的网络设备，所述网络设备包括：
    接收模块，用于接收源小区发送的切换请求，所述切换请求用于将终端设备从所述源小区切换到所述目标小区，所述切换为第一切换，所述第一切换为基于层一/层二的信令或测量触发的切换。
  72. 根据权利要求71所述的网络设备，其特征在于，所述切换是基于层一测量或者层三测量确定的。
  73. 根据权利要求71或72所述的网络设备，其特征在于，所述切换是基于所述终端设备接收的第一信息触发的，所述第一信息用于指示所述终端设备从所述源小区切换到所述目标小区。
  74. 根据权利要求73所述的网络设备，其特征在于，所述第一信息承载于媒体接入控制MAC层控制单元MAC CE消息或下行控制信息DCI中。
  75. 根据权利要求71或72所述的网络设备，其特征在于，所述切换是基于第一条件触发的，所述第一条件为所述终端设备确定所述目标小区是否满足执行所述切换/测量上报的条件。
  76. 根据权利要求75所述的网络设备，其特征在于，所述切换是基于层一测量确定的，所述第一条件包括以下条件中的至少一种：
    第一波束集合中的至少一个波束满足第一阈值；
    所述源小区的连续N次误块率BLER高于第二阈值，其中N为正整数；
    第一波束集合中的至少一个波束在T时间内的测量值低于/高于第三阈值，T>0；
    所述源小区的测量值与所述目标小区的测量值的差值大于第四阈值；
    所述源小区的测量值低于第五阈值，所述目标小区的测量值高于第六阈值；或者，
    所述源小区的测量值高于第七阈值，所述目标小区的测量值低于第八阈值。
  77. 根据权利要求76所述的网络设备，其特征在于，所述第一波束集合包括以下至少一种：
    同步信号块SSB；
    信道状态信息-参考信号CSI-RS，或
    上行探测参考信号SRS。
  78. 根据权利要求75所述的网络设备，其特征在于，所述切换是基于层三测量确定的，所述第一条件包括A3测量事件或A5测量事件。
  79. 根据权利要求71-78中任一项所述的网络设备，其特征在于，所述网络设备还包括：
    发送模块，用于向所述源小区发送所述切换请求的响应消息，所述切换请求的响应消息中包括所述目标小区的配置信息。
  80. 根据权利要求71-79中任一项所述的网络设备，其特征在于，所述源小区和所述目标小区是通过以下至少一项来区分的：
    不同的小区标识；
    不同的传输接收点TRP；
    不同的参考信号集合；
    不同的资源；
    不同的混合自动重传请求HARQ进程；
    不同的协议栈；或者，
    不同的TCI状态。
  81. 一种终端设备，其特征在于，包括存储器和处理器，所述存储器用于存储程序，所述处理器用于调用所述存储器中的程序，以执行如权利要求1-15中任一项所述的方法。
  82. 一种网络设备，其特征在于，包括存储器和处理器，所述存储器用于存储程序，所述处理器用于调用所述存储器中的程序，以执行如权利要求16-40中任一项所述的方法。
  83. 一种装置，其特征在于，包括处理器，用于从存储器中调用程序，以执行如权利要求1-15中任一项所述的方法。
  84. 一种装置，其特征在于，包括处理器，用于从存储器中调用程序，以执行如权利要求16-40中任一项所述的方法。
  85. 一种芯片，其特征在于，包括处理器，用于从存储器调用程序，使得安装有所述芯片的设备执行如权利要求1-15中任一项所述的方法。
  86. 一种芯片，其特征在于，包括处理器，用于从存储器调用程序，使得安装有所述芯片的设备执行如权利要求16-40中任一项所述的方法。
  87. 一种计算机可读存储介质，其特征在于，其上存储有程序，所述程序使得计算机执行如权利要求1-15中任一项所述的方法。
  88. 一种计算机可读存储介质，其特征在于，其上存储有程序，所述程序使得计算机执行如权利要求16-40中任一项所述的方法。
  89. 一种计算机程序产品，其特征在于，包括程序，所述程序使得计算机执行如权利要求1-15中任一项所述的方法。
  90. 一种计算机程序产品，其特征在于，包括程序，所述程序使得计算机执行如权利要求16-40中任一项所述的方法。
  91. 一种计算机程序，其特征在于，所述计算机程序使得计算机执行如权利要求1-15中任一项所述的方法。
  92. 一种计算机程序，其特征在于，所述计算机程序使得计算机执行如权利要求16-40中任一项所述的方法。
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