WO2024000106A1 - 条件切换的控制方法和设备 - Google Patents

条件切换的控制方法和设备 Download PDF

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Publication number
WO2024000106A1
WO2024000106A1 PCT/CN2022/101558 CN2022101558W WO2024000106A1 WO 2024000106 A1 WO2024000106 A1 WO 2024000106A1 CN 2022101558 W CN2022101558 W CN 2022101558W WO 2024000106 A1 WO2024000106 A1 WO 2024000106A1
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WIPO (PCT)
Prior art keywords
network device
cell
conditional handover
terminal device
message
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PCT/CN2022/101558
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English (en)
French (fr)
Inventor
范江胜
尤心
林雪
Original Assignee
Oppo广东移动通信有限公司
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Priority to PCT/CN2022/101558 priority Critical patent/WO2024000106A1/zh
Publication of WO2024000106A1 publication Critical patent/WO2024000106A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems

Definitions

  • the present application relates to the field of communications, and more specifically, to a control method and device for conditional switching.
  • conditional handover mechanism After receiving the conditional handover configuration information configured by the network device, the terminal device begins to evaluate whether the handover conditions associated with each conditional handover candidate cell are met. When the handover condition associated with at least one conditional handover candidate cell is met, the terminal device will select a conditional handover candidate cell that satisfies the handover condition to initiate the handover process. Once a conditional switching process is successfully executed, the terminal device will delete all conditional switching configurations.
  • Embodiments of the present application provide a control method and device for conditional switching.
  • the embodiment of the present application provides a conditional switching control method, including:
  • the first network device sends a first message, the first message is used for conditional handover control;
  • the first network device is at least one of the primary cell PCell, the primary node MN, or the secondary node SN to which the terminal device is currently connected.
  • Embodiments of the present application also provide a conditional switching control method, including:
  • the second network device receives the first message sent by the first network device, the first message being used for conditional handover control;
  • the first network device is at least one of PCell, MN or SN to which the terminal device is currently connected; and the second network device is a conditional handover candidate cell associated with the terminal device.
  • Embodiments of the present application also provide a conditional switching control method, including:
  • the third network device receives the first message sent by the first network device, the first message being used for conditional handover control;
  • the first network device is at least one of the PCell, MN or SN to which the terminal device is currently connected; the third network device is at least one of the PCell, MN or SN to which the terminal device is connected before conditional handover occurs. .
  • Embodiments of the present application also provide a conditional switching control method, including:
  • the fourth network device receives a fourth message sent by the first network device, the fourth message being used for conditional handover control;
  • the first network device is at least one of the PCell, MN or SN to which the terminal device is currently connected; the fourth network device is at least one of the PCell, MN or SN to which the terminal device is connected after conditional handover occurs. .
  • Embodiments of the present application also provide a conditional switching control method, including:
  • the terminal device reports auxiliary information to the first network device and/or the fourth network device, where the auxiliary information is related to the conditional handover candidate cell;
  • the first network device is at least one of the PCell, MN or SN to which the terminal device is currently connected; the fourth network device is at least one of the PCell, MN or SN to which the terminal device is connected after conditional handover occurs. .
  • An embodiment of the present application also provides a first network device, including:
  • a sending unit configured to send a first message, the first message being used for conditional switching control
  • the first network device is at least one of the primary cell PCell, the primary node MN, or the secondary node SN to which the terminal device is currently connected.
  • An embodiment of the present application also provides a second network device, including:
  • a receiving unit configured to receive a first message sent by the first network device, where the first message is used for conditional handover control
  • the first network device is at least one of PCell, MN or SN to which the terminal device is currently connected; and the second network device is a conditional handover candidate cell associated with the terminal device.
  • An embodiment of the present application also provides a third network device, including:
  • a receiving unit configured to receive a first message sent by the first network device, where the first message is used for conditional handover control
  • the first network device is at least one of the PCell, MN or SN to which the terminal device is currently connected;
  • the third network device is at least one of the PCell, MN or SN to which the terminal device is connected before conditional handover occurs. at least one of.
  • An embodiment of the present application also provides a fourth network device, including:
  • a receiving unit configured to receive a fourth message sent by the first network device, where the fourth message is used for conditional handover control
  • the first network device is at least one of the PCell, MN or SN to which the terminal device is currently connected; the fourth network device is at least one of the PCell, MN or SN to which the terminal device is connected after conditional handover occurs. at least one of.
  • An embodiment of the present application also provides a terminal device, including:
  • a reporting unit configured to report auxiliary information to the first network device and/or the fourth network device, where the auxiliary information is related to the conditional handover candidate cell;
  • the first network device is at least one of the PCell, MN or SN to which the terminal device is currently connected; the fourth network device is at least one of the PCell, MN or SN to which the terminal device is connected after conditional handover occurs. .
  • An embodiment of the present application also provides a terminal device, including:
  • a reporting unit configured to report auxiliary information to the first network device and/or the fourth network device, where the auxiliary information is related to the conditional handover candidate cell;
  • the first network device is at least one of the PCell, MN or SN to which the terminal device is currently connected; the fourth network device is at least one of the PCell, MN or SN to which the terminal device is connected after conditional handover occurs. at least one of.
  • An embodiment of the present application provides a terminal device, including a processor and a memory.
  • the memory is used to store a computer program
  • the processor is used to call and run the computer program stored in the memory, so that the terminal device executes the conditional switching control method executed by the terminal device.
  • An embodiment of the present application provides a network device, including a processor and a memory.
  • the memory is used to store a computer program
  • the processor is used to call and run the computer program stored in the memory, so that the network device executes the conditional switching control method executed by any of the above network devices.
  • An embodiment of the present application provides a chip for implementing the above conditional switching control method.
  • the chip includes: a processor, configured to call and run a computer program from a memory, so that the device installed with the chip executes the above-mentioned conditional switching control method.
  • Embodiments of the present application provide a computer-readable storage medium for storing a computer program.
  • the computer program When the computer program is run by a device, it causes the device to perform the above-mentioned conditional switching control method.
  • An embodiment of the present application provides a computer program product, which includes computer program instructions.
  • the computer program instructions cause a computer to execute the above-mentioned conditional switching control method.
  • An embodiment of the present application provides a computer program that, when run on a computer, causes the computer to execute the above control method for conditional switching.
  • Embodiments of the present application provide a communication system, including:
  • Terminal equipment used to execute the above conditional switching control method
  • the network device is used to execute the above conditional switching control method.
  • the service continuity of the terminal device during the continuous conditional switching process can be ensured.
  • Figure 1 is a schematic diagram of an application scenario according to an embodiment of the present application.
  • FIG. 2 is an overall flowchart of an exemplary conditional switching control method provided by an embodiment of the present application.
  • Figure 3 is a schematic flow chart of a conditional switching control method according to an embodiment of the present application.
  • Figure 4 is a schematic flowchart of a control method for conditional switching according to another embodiment of the present application.
  • FIG. 5 is a schematic flowchart of a control method for conditional switching according to another embodiment of the present application.
  • FIG. 6 is a schematic flowchart of a control method for conditional switching according to another embodiment of the present application.
  • FIG. 7 is a schematic flowchart of a control method for conditional switching according to another embodiment of the present application.
  • FIG. 8 is a schematic flowchart of a control method for conditional switching according to another embodiment of the present application.
  • Figure 9 is a schematic flowchart of a control method for conditional switching according to another embodiment of the present application.
  • Figure 10 is a schematic flowchart of a control method for conditional switching according to another embodiment of the present application.
  • Figure 11 is a schematic flowchart of a control method for conditional switching according to another embodiment of the present application.
  • Figure 12 is a schematic flowchart of a control method for conditional switching according to another embodiment of the present application.
  • FIG. 13 is a schematic flowchart of a control method for conditional switching according to another embodiment of the present application.
  • Figure 14 is a schematic flowchart of a control method for conditional switching according to another embodiment of the present application.
  • Figure 15 is a schematic structural diagram of a first network device according to an embodiment of the present application.
  • Figure 16 is a schematic structural diagram of a first network device according to another embodiment of the present application.
  • Figure 17 is a schematic structural diagram of a second network device according to an embodiment of the present application.
  • Figure 18 is a schematic structural diagram of a second network device according to another embodiment of the present application.
  • Figure 19 is a schematic structural diagram of a third network device according to an embodiment of the present application.
  • Figure 20 is a schematic structural diagram of a third network device according to another embodiment of the present application.
  • Figure 21 is a schematic structural diagram of a fourth network device according to an embodiment of the present application.
  • Figure 22 is a schematic structural diagram of a fourth network device according to another embodiment of the present application.
  • Figure 23 is a schematic structural diagram of a terminal device according to an embodiment of the present application.
  • Figure 24 is a schematic structural diagram of a terminal device according to another embodiment of the present application.
  • Figure 25 is a schematic block diagram of a communication device according to an embodiment of the present application.
  • Figure 26 is a schematic block diagram of a chip according to an embodiment of the present application.
  • Figure 27 is a schematic block diagram of a communication system according to an embodiment of the present application.
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • WCDMA broadband code division multiple access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • LTE-A Advanced long term evolution
  • NR New Radio
  • NTN Non-Terrestrial Networks
  • UMTS Universal Mobile Telecommunication System
  • WLAN Wireless Local Area Networks
  • WiFi wireless fidelity
  • 5G fifth-generation communication
  • the communication system in the embodiment of the present application can be applied to a carrier aggregation (Carrier Aggregation, CA) scenario, a dual connectivity (Dual Connectivity, DC) scenario, or a standalone (Standalone, SA)Network scene.
  • Carrier Aggregation, CA Carrier Aggregation, CA
  • DC Dual Connectivity
  • SA Standalone
  • the communication system in the embodiment of the present application can be applied to unlicensed spectrum, where the unlicensed spectrum can also be considered as shared spectrum; or, the communication system in the embodiment of the present application can also be applied to licensed spectrum , among which, licensed spectrum can also be considered as non-shared spectrum.
  • the embodiments of this application describe various embodiments in combination with network equipment and terminal equipment.
  • the terminal equipment may also be called user equipment (User Equipment, UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication equipment, user agent or user device, etc.
  • User Equipment User Equipment
  • the terminal device can be a station (ST) in the WLAN, a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, or a personal digital processing unit.
  • ST station
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • the terminal device can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle-mounted; it can also be deployed on water (such as ships, etc.); it can also be deployed in the air (such as aircraft, balloons and satellites). superior).
  • the terminal device may be a mobile phone (Mobile Phone), a tablet computer (Pad), a computer with wireless transceiver functions, a virtual reality (Virtual Reality, VR) terminal device, or an augmented reality (Augmented Reality, AR) terminal.
  • Equipment wireless terminal equipment in industrial control, wireless terminal equipment in self-driving, wireless terminal equipment in remote medical, wireless terminal equipment in smart grid , wireless terminal equipment in transportation safety, wireless terminal equipment in smart city, or wireless terminal equipment in smart home, etc.
  • the terminal device may also be a wearable device.
  • Wearable devices can also be called wearable smart devices. It is a general term for applying wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes, etc.
  • a wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are not just hardware devices, but also achieve powerful functions through software support, data interaction, and cloud interaction.
  • wearable smart devices include full-featured, large-sized devices that can achieve complete or partial functions without relying on smartphones, such as smart watches or smart glasses, and those that only focus on a certain type of application function and need to cooperate with other devices such as smartphones.
  • the network device may be a device used to communicate with mobile devices.
  • the network device may be an access point (Access Point, AP) in WLAN, or a base station (Base Transceiver Station, BTS) in GSM or CDMA.
  • BTS Base Transceiver Station
  • it can be a base station (NodeB, NB) in WCDMA, or an evolutionary base station (Evolutional Node B, eNB or eNodeB) in LTE, or a relay station or access point, or a vehicle-mounted device, a wearable device, and an NR network network equipment (gNB) or network equipment in the future evolved PLMN network or network equipment in the NTN network, etc.
  • AP Access Point
  • BTS Base Transceiver Station
  • NodeB, NB base station
  • Evolutional Node B, eNB or eNodeB evolution base station
  • gNB NR network network equipment
  • the network device may have mobile characteristics, for example, the network device may be a mobile device.
  • the network device can be a satellite or balloon station.
  • the satellite can be a low earth orbit (LEO) satellite, a medium earth orbit (MEO) satellite, a geosynchronous orbit (geostationary earth orbit, GEO) satellite, a high elliptical orbit (High Elliptical Orbit, HEO) satellite ) satellite, etc.
  • the network device may also be a base station installed on land, water, etc.
  • network equipment can provide services for a cell, and terminal equipment communicates with the network equipment through transmission resources (for example, frequency domain resources, or spectrum resources) used by the cell.
  • the cell can be a network equipment ( For example, the cell corresponding to the base station), the cell can belong to the macro base station, or it can belong to the base station corresponding to the small cell (Small cell).
  • the small cell here can include: urban cell (Metro cell), micro cell (Micro cell), pico cell ( Pico cell), femto cell (Femto cell), etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-rate data transmission services.
  • Figure 1 illustrates a communication system 100.
  • the communication system includes a network device 110 and two terminal devices 120.
  • the communication system 100 may include multiple network devices 110 , and the coverage of each network device 110 may include other numbers of terminal devices 120 , which is not limited in this embodiment of the present application.
  • the communication system 100 may also include other network entities such as Mobility Management Entity (MME), Access and Mobility Management Function (AMF), etc.
  • MME Mobility Management Entity
  • AMF Access and Mobility Management Function
  • network equipment may include access network equipment and core network equipment. That is, the wireless communication system also includes multiple core networks used to communicate with access network equipment.
  • the access network equipment can be a long-term evolution (long-term evolution, LTE) system, a next-generation (mobile communication system) (next radio, NR) system or authorized auxiliary access long-term evolution (LAA- Evolutionary base station (evolutional node B, abbreviated as eNB or e-NodeB) macro base station, micro base station (also known as "small base station"), pico base station, access point (access point, AP), Transmission point (TP) or new generation base station (new generation Node B, gNodeB), etc.
  • LTE long-term evolution
  • NR next-generation
  • LAA- Evolutionary base station evolutional node B, abbreviated as eNB or e-NodeB
  • eNB next-generation
  • NR next-generation
  • LAA- Evolutionary base station evolutional node B, abbre
  • the communication equipment may include network equipment and terminal equipment with communication functions.
  • the network equipment and terminal equipment may be specific equipment in the embodiments of the present application, which will not be described again here; the communication equipment also It may include other devices in the communication system, such as network controllers, mobility management entities and other network entities, which are not limited in the embodiments of this application.
  • the "instruction” mentioned in the embodiments of this application may be a direct instruction, an indirect instruction, or an association relationship.
  • a indicates B which can mean that A directly indicates B, for example, B can be obtained through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also mean that there is an association between A and B. relation.
  • correlate can mean that there is a direct correspondence or indirect correspondence between the two, it can also mean that there is an associated relationship between the two, or it can mean indicating and being instructed, configuration and being. Configuration and other relationships.
  • Conditional PCell Primary cell, primary cell
  • CHO conditional handover, conditional handover
  • the handover configuration message sent by the source PCell to the terminal device includes at least one conditional handover target PCell cell configuration information and the corresponding conditional handover target PCell Handover condition configuration information associated with the cell.
  • Conditional PSCell Primary Secondary cell, primary and secondary cells
  • CPA conditional PSCell addition
  • conditional PSCell change conditional PSCell change, CPC
  • the conditional handover mechanism in related technologies generally adopts a two-step processing mode: in the first step, the terminal device receives the conditional handover configuration configured by the network device, which includes configuration information associated with at least one handover candidate cell. In the second step, after successfully receiving the conditional handover configuration information configured by the network device, the terminal device begins to evaluate whether the handover conditions associated with each conditional handover candidate cell are met. When the handover condition associated with at least one conditional handover candidate cell is met, the terminal device will select a conditional handover candidate cell that satisfies the handover condition to initiate the handover process. Once a conditional switching process is successfully executed, the terminal device will delete all conditional switching configurations.
  • MCG Master Cell Group
  • MCG includes at least one PCell (primary cell).
  • the MCG may also include at least one SCell (Secondary Cell). Since all cells included in MCG are usually deployed in one node, MCG can also be called MN (Master Node) in many scenarios.
  • Another set of cells connected to the terminal device is called SCG (Secondary Cell Group).
  • the SCG includes at least one primary cell, which is called PSCell.
  • PSCell primary cell
  • SCell SCell
  • the SCG may also include at least one SCell. Since all cells included in the SCG are usually deployed in one node, the SCG may also be called SN (Secondary Node) in many scenarios.
  • the communication system is composed of numerous cells, and each cell has a corresponding signal service range. As the terminal equipment moves, the terminal equipment will be switched from one cell to another to ensure the continuity of service.
  • the handover process involves the migration of the control entity, including: user control management through the source cell before handover to user control management through the new serving cell after handover. At the same time, the handover process also involves the forwarding of user data.
  • the user data that needs to be forwarded mainly includes three parts: the data that has reached the source cell before handover, although it has been tried to transmit to the terminal device, but still has not received the feedback data successfully received by the terminal device; the data has reached the source cell before handover but has not had time to transmit to the terminal device.
  • the purpose of data forwarding is also to ensure the continuity of terminal equipment services.
  • conditional handover In the conditional handover (CHO, CPC or CPA) mechanism, the user data forwarding task that occurs on the network equipment during the handover process is performed once and in one direction, because the terminal device will only select at most one conditional handover candidate cell. Initiate the access process. Once the terminal device successfully completes access, all conditional switching configuration information stored by the terminal device will be deleted. Therefore, a conditional handover process (or a single conditional handover configuration process) only involves one data forwarding initiated by the source cell. Correspondingly, the direction of data forwarding can only be from the source cell of the terminal equipment to at least one conditional handover candidate cell.
  • the terminal device After the terminal device successfully performs a single conditional handover, the previously stored configuration information related to at least one conditional handover candidate cell will not necessarily be deleted. And as long as the conditions are met, the terminal device can still use the stored conditional switching configuration to initiate a new conditional switching (that is, the terminal device receives the conditional switching configuration once and performs conditional switching multiple times). Then, for continuous conditional handover scenarios, data forwarding may be triggered back and forth between multiple conditional handover candidate cells. For example: continuous condition switching will occur multiple times and data forwarding in multiple directions.
  • FIG. 2 is an overall flowchart of an exemplary conditional switching control method provided by an embodiment of the present application.
  • SN0 is the SN to which the terminal device is currently connected (i.e., the source cell)
  • SN1 is the target SN (i.e., the target cell) to which the terminal device is preparing to switch.
  • SN2 is a conditional handover candidate cell for the terminal equipment.
  • Figure 2 only draws part of the control method for conditional switching, not all implementation methods. The specific steps may change according to changes in actual application scenarios.
  • control method of this conditional switching may include the following steps:
  • Step 0 is an optional step and is triggered by conditional switching.
  • the terminal equipment is ready to switch from SN0 to SN1 (SN1 is the target cell for this round of conditional handover).
  • the conditional handover may be triggered autonomously by the terminal device, for example, when the switching conditions configured by the network device are met, or it may be actively triggered by the network device, for example, the network device instructs the terminal device to switch to a preconfigured conditional handover cell through signaling.
  • Step 1a The terminal device sends a message to the MN, which contains a reconfiguration completion message sent to the SN.
  • Step 1b MN forwards the reconfiguration completion message to SN1.
  • steps 1a and 1b are optional steps. In an implementation manner, both steps 1a and 1b occur. In this manner, the terminal device sends a reconfiguration completion message to SN1 through steps 1a and 1b. In another implementation mode, only step 1b is performed. In this mode, the MN sends a reconfiguration completion message or a conditional handover occurrence indication message to SN1. The conditional handover occurrence indication message is used to inform SN1 of the conditions for the terminal device to prepare for access. Switch target cell.
  • the terminal device may also directly send a reconfiguration completion message to SN1.
  • Step 1c is optional.
  • the terminal device accesses SN1 through step 1c. This application does not limit the logical sequence of step 1a and step 1c.
  • Step 1d is an optional step. SN1 notifies the MN that the terminal device has successfully accessed SN1 through step 1d.
  • Step 1e is an optional step.
  • the MN notifies SN0 to stop sending data to the terminal device.
  • SN0 is the SN connected to the terminal device before this round of conditional switching. This application does not limit the logical sequence in which step 1e and any of steps 1a to 1d occur.
  • Step 2a is an optional step.
  • the MN will perform step 2a to let the SNs participating in the conditional handover, such as SN0 and/or SN2, release the resources or configurations reserved for the terminal device. For example, if SN0 is no longer a conditional handover candidate cell for the terminal equipment, the MN may request SN0 to release the resources reserved for the terminal equipment. If SN2 is no longer a conditional handover candidate cell for the terminal equipment, the MN may request SN2 to release the resources reserved for the terminal equipment. In addition, if SN2 is no longer a conditional handover candidate cell for the terminal device, SN0 or SN1 can also directly request SN2 to release the resources reserved for the terminal device. This application does not limit the logical sequence in which step 2a and any of steps 1a to 1d occur.
  • Step 2b The target SN of the terminal device's conditional switching in this round is SN1.
  • SN0 and SN2 need to know the object of the current round of conditional handover of the terminal equipment, and the notification process can be performed by the MN.
  • the MN notifies the corresponding SN, such as SN0 and/or SN2, that the terminal device has performed conditional handover.
  • the notification process can also be performed by SN0 or SN1, which notifies the corresponding SN, such as SN2, that the terminal device has performed conditional switching.
  • This application does not limit the logical sequence in which step 2b and any of steps 1a to 1d occur.
  • Step 2a and step 2b may exist at the same time. In this case, the target SN set acted upon by step 2a is different from the target SN set acted upon by step 2b.
  • Step 2b1 and Step 2b2 Both Step 2b1 and Step 2b2 are responses to Step 2b, but Steps 2b1 and 2b2 may not be executed simultaneously.
  • step 2b1 is performed, and the SN that receives the notification requests to release the resources reserved for the terminal device.
  • step 2b1 is used to reply to the MN or the corresponding SN of SN0 or SN1 that it wishes to release the resources or configurations reserved for the terminal equipment, or to notify the MN or the corresponding SN of SN0 or SN1 that it has released the resources reserved for the terminal equipment. Or configuration.
  • step 2b2 is executed to notify the MN of information related to the conditional handover corresponding to the SN update.
  • Step 3 is optional.
  • the terminal device sends conditional handover auxiliary information to the network device through step 3.
  • the network device that receives the conditional handover auxiliary information is the MN or the SN to which the terminal device is currently connected, such as the SN0 connected before the handover or the SN1 connected after the handover. This application does not limit the logical sequence of step 3 and other steps in Figure 2;
  • Step 4 is optional. MN or SN0 or SN2 will send the data forwarding address to the terminal device and connect to the SN such as SN1 after conditional switching. SN1 will trigger data forwarding tasks between candidate SNs related to other condition switching at the appropriate time.
  • FIG. 3 is a schematic flowchart of a conditional switching control method 300 according to an embodiment of the present application. This method can optionally be applied to the system shown in Figure 1, but is not limited thereto. The method includes at least part of the following.
  • the first network device sends a first message, which is used for conditional handover control.
  • the first network device is at least one of a primary cell (PCell), a primary node (MN) or a secondary node (SN) to which the terminal device is currently connected.
  • PCell primary cell
  • MN primary node
  • SN secondary node
  • conditional switching may include at least one of the following scenarios:
  • CPC Conditional PSCell modification
  • the first network device may send the first message before, during or after a certain round of conditional handover for a certain terminal device.
  • the first message is used for the next round of conditional handover control for the terminal device.
  • the first network device sending a first message includes:
  • the first network device sends the first message to the second network device and/or the third network device.
  • the second network device is a conditional handover candidate cell associated with the terminal device
  • the third network device is at least one of the PCell, MN or SN that the terminal device is connected to before conditional handover occurs.
  • the first network device sends the first message to the second network device, and the first network device sends the first message to the third network device.
  • These two steps can be done in parallel or in sequence, where , before receiving the first message, the second network device is already a conditional handover candidate cell that reserves resources for the terminal device, while the third network device has the following different scenarios:
  • the conditional handover control may include adding a conditional handover candidate cell (which may also be called a conditional handover-related candidate cell). Specifically, it may include requesting a cell as a conditional handover candidate cell for the terminal device. For example: before receiving the addition request, a certain cell does not reserve resources for the terminal device.
  • the third network device may be the source cell before the terminal device switches. Similar to adding a conditional handover candidate cell, the first network device sends a first message to the third network device (source cell) and can request the third network device to serve as the terminal device.
  • Conditional handover candidate cells are also be called a conditional handover-related candidate cell.
  • the third network device is already a conditional handover candidate cell that reserves resources for the terminal device before receiving the first message.
  • the first network device sends a first message to the third network device (source cell), and can request the third network device to continue to serve as a conditional handover candidate cell for the terminal device.
  • the first network device is the initiator of the first message, which may be the MN to which the terminal device is connected (it may also be the PCell or SN to which the terminal device is connected).
  • the second network device and the third network device may be recipients of the first message.
  • the second network device may switch candidate cells such as SN2 for other conditions.
  • the third network device may be a cell to which the terminal device was connected before conditional handover occurs, such as SN0.
  • the MN may send the first message to SN2 or SN0.
  • MN or SN0 or SN1 may notify SN2 that the terminal device has performed conditional handover through the first message.
  • the MN may also notify the SNO terminal device that the conditional handover has been performed through the first message.
  • the relationship between the first network device and the second network device includes at least one of the following:
  • the first network device is the PCell currently connected to the terminal device, and the second network device is the PCell related to the conditional switching associated with the terminal device;
  • the first network device is the MN to which the terminal device is currently connected, and the second network device is the MN related to the conditional handover associated with the terminal device;
  • the first network device is the MN or SN to which the terminal device is currently connected
  • the second network device is the SN related to the conditional switching associated with the terminal device.
  • the configuration method of the conditional handover candidate cell associated with the terminal device includes: the network device configures at least one conditional handover candidate cell for the terminal device through a reconfiguration process.
  • the conditional handover candidate cell associated with the terminal device is at least one conditional handover-related PCell.
  • the conditional handover candidate cell associated with the terminal device is at least one conditional handover-related PSCell.
  • the application scenarios involved in the embodiments of this application include at least one of the following:
  • Scenario 1 In a single connection scenario (non-DC scenario), the first network device is the PCell currently connected to the terminal device (it does not limit whether before or after the conditional switch occurs), and the second network device is related to the conditional switch associated with the terminal device. PCell.
  • Scenario 2 In the DC scenario, further focusing on the CHO scenario, the first network device is the MN that the terminal device is currently connected to (it does not limit whether before or after the conditional switch occurs), and the second network device is related to the conditional switch associated with the terminal device. MN.
  • the first network device is the MN or SN that the terminal device is currently connected to (it does not limit whether the conditional switch occurs before or after the conditional switch occurs), and the second network device is the MN or SN associated with the terminal device.
  • Conditional switching related SN is the MN or SN that the terminal device is currently connected to (it does not limit whether the conditional switch occurs before or after the conditional switch occurs)
  • the relationship between the first network device and the third network device includes at least one of the following:
  • the first network device is the PCell currently connected to the terminal device
  • the third network device is the PCell connected to the terminal device before conditional switching occurs
  • the first network device is the MN to which the terminal device is currently connected
  • the third network device is the MN to which the terminal device is connected before conditional handover occurs
  • the first network device is the MN or SN to which the terminal device is currently connected
  • the third network device is the SN to which the terminal device is connected before conditional handover occurs.
  • the application scenarios involved in the embodiments of this application include at least one of the following:
  • Scenario 1 In a single connection scenario (non-DC scenario), the first network device is the PCell currently connected to the terminal device, and the third network device is the PCell connected to the terminal device before conditional switching occurs.
  • Scenario 2 In the DC scenario, further focusing on the CHO scenario, the first network device is the MN to which the terminal device is currently connected, and the third network device is the MN to which the terminal device was connected before conditional handover occurred.
  • Scenario 3 In the DC scenario, further focusing on the CPA or CPC scenario, the first network device is the MN or SN that the terminal device is currently connected to, and the third network device is the SN that the terminal device was connected to before conditional handover occurred.
  • the first message includes at least one of the following:
  • Example of information 1-1 As shown in Figure 2, the SN to which the terminal device is currently connected is SN0, and the target cell for the next round of conditional handover is SN1.
  • Information 1-1 may include the cell identifier associated with the cell corresponding to SN1.
  • the cell identifier can be any one or more of the following forms: the logical number identifier associated with the conditional handover candidate cell, CGI (Cell Global Identifier, cell global identifier), and the corresponding PCI (Physical Cell Identifier, physical cell identifier) of the cell. ) and frequency point combination information, as well as the corresponding serving cell identifier of the cell such as serving cell index (serving cell index).
  • the logical number identifier associated with the above conditional handover candidate cell can be configured through the network.
  • the network device under the conditional handover mechanism, the network device will configure the configuration information associated with at least one conditional handover candidate cell for the terminal device.
  • the network device A logical number identifier will be assigned to the configuration information associated with each conditional handover candidate cell. For example, if the network device configures the configuration information associated with four conditional handover candidate cells for the terminal device, then the logical number identifiers assigned to the configuration information associated with the four conditional handover candidate cells may be 0, 1, 2, and 3 respectively.
  • the first indication information is used to indicate that the conditional handover candidate cell accessed by the terminal device is not the second network device and/or the third network device (i.e., the recipient of the first message ) corresponding to the community.
  • Examples of information 1-2 If the first network device sends first indication information to the second network device, the first indication information is used to indicate the conditional handover candidate cell to which the terminal device accesses (i.e., the target cell for this round of handover). ) is not the cell corresponding to the second network device. If the first network device sends the first indication information to the third network device, the first indication information is used to indicate that conditional switching has occurred in the third network device terminal device.
  • the SN to which the terminal equipment is currently connected is SN0, and the target cell for the next round of conditional handover is SN1.
  • the MN to which the terminal equipment is connected may also be the PCell or PCell to which the terminal equipment is connected.
  • SN may send the first message to other conditional handover candidate cells such as SN2.
  • the first message may include first indication information, used to inform SN2 that the cell selected by the terminal equipment in the next round of conditional handover is not SN2.
  • SN2 can decide on its own whether to continue switching candidate cells as a terminal device based on information such as information 1-2 (other information contained in the first message may also be referred to).
  • Second indication information the second indication information is used to request the second network device and/or the third network device to provide a data forwarding address.
  • Examples of information 1-3 If the first network device sends second indication information to the second network device, the second indication information is used to request the second network device to provide a data forwarding address. If the first network device sends second indication information to the third network device, the second indication information is used to request the third network device to provide a data forwarding address.
  • the SN to which the terminal device is currently connected is SN0, and the potential objects for data forwarding are SN1 and/or SN2.
  • SN0 needs to obtain the data forwarding receiving address of SN1 or SN2 before sending forwarding data to SN1 or SN2.
  • the source SN of data forwarding will change from SN0 to SN1.
  • SN1 does not know the data forwarding addresses of other conditional handover candidate cells (for example: SN2).
  • the MN to which the terminal device is connected (the initiator of the first message, which may also be the PCell or SN to which the terminal device is connected) can send the first message to other conditional handover candidate cells, such as SN2.
  • the first message may include second indication information, used to request SN2 to provide a new data forwarding address.
  • third indication information is used to request the second network device and/or the third network device to agree to serve as a conditional handover candidate cell for the terminal device.
  • Examples of information 1-4 If the first network device sends third indication information to the second network device, the third indication information is used to request the second network device to continue to serve as a conditional handover candidate cell for the terminal device. If the first network device sends third indication information to the third network device, the third indication information is used to request the third network device to continue to serve as a conditional handover candidate cell for the terminal device.
  • the terminal device is connected to SN0 before conditional switching occurs.
  • the following scenarios may exist. Scenario 1: Before conditional handover, SN0 already belongs to one of the conditional handover candidate cells configured by the terminal equipment. Scenario 2: Before conditional handover, SN0 does not belong to one of the conditional handover candidate cells configured by the terminal equipment.
  • the SN to which the terminal equipment is currently connected is SN0, and the target cell for the next round of conditional handover is SN1. Since SN2 has not been selected as the target handover cell, the MN to which the terminal equipment is connected (the initiator of the first message, which may also be the PCell or SN to which the terminal equipment is connected) can send the third handover candidate cell to other conditions, such as SN2. A message.
  • the first message contains third indication information, which is used to request SN2 to continue to serve as a conditional handover candidate cell for the terminal equipment. Of course, whether SN2 accepts the above request will be judged by SN2.
  • the cell configuration information used by the terminal device in the cell connected before the conditional handover is the cell corresponding to the SN, the cell corresponding to the MN, or the PCell to which the terminal device connected before the conditional handover. at least one of.
  • Examples of information 1-5 the cell corresponding to the SN, the cell corresponding to the MN, or the cell configuration information used in the PCell to which the terminal equipment is connected before conditional handover.
  • the SN to which the terminal device is currently connected is SN0
  • information 1-5 may include cell configuration information used by the terminal device in SN0.
  • the MN to which the terminal device is connected (the initiator of the first message, which may also be the PCell or SN to which the terminal device is connected) may send the first message to other conditional handover candidate cells, such as SN2.
  • the first message contains information 1-5. After receiving the information 1-5, SN2 can decide whether to change the resources reserved for the terminal device or change the cell configuration information prepared for the terminal device.
  • the cell configuration information may include at least one of the following configurations:
  • NAS Non-access stratum, non-access layer layer related configuration information
  • SDAP Service Data Adaptation Protocol, service data adaptation protocol
  • RRC Radio Resource Control, Radio Resource Control
  • PDCP Packet Data Convergence Protocol, packet data convergence protocol
  • BAP Backhaul Adaptation Protocol, return adaptation protocol
  • RLC Radio Link Control, wireless link control
  • MAC Media Access Control, media access control
  • Information 1-7 Location information of the terminal device.
  • Information 1-8 Historical serving cell information of the terminal device.
  • Examples of information 1-6, information 1-7 and information 1-8 As shown in Figure 2, the SN the terminal device is currently connected to is SN0, and the target cell for the next round of conditional handover is SN1. Since SN2 has not been selected as the target handover cell, the MN to which the terminal equipment is connected (the initiator of the first message, which may also be the PCell or SN to which the terminal equipment is connected) can send the third handover candidate cell to other conditions, such as SN2. A message.
  • the first message includes at least one of information 1-6, information 1-7 or information 1-8, which is used to request SN2 to continue to serve as a conditional handover candidate cell for the terminal equipment. Of course, whether SN2 accepts the above request will be judged by SN2.
  • the above-mentioned first message may explicitly contain at least one of the above-mentioned information 1-1 to information 1-8.
  • the first message may also implicitly contain part of the information, such as information 1-2 to information 1-4.
  • the first message is used for at least one of the following:
  • the second indication information may not be included in the first message sent by the first network device to the second network device and/or the third network device. Instead, the receiving device is implicitly requested to provide a data forwarding address through the first message.
  • the third indication information may not be included in the first message sent by the first network device to the second network device and/or the third network device. Instead, the receiving device is implicitly requested through the first message to determine whether it agrees to serve as a conditional handover candidate cell for the terminal device.
  • the first indication information may not be included in the first message sent by the first network device to the second network device and/or the third network device. Instead, the first message implicitly indicates that a conditional switch has occurred on the receiving device.
  • the method further includes:
  • the first network device receives the first message response message sent by the second network device and/or the third network device.
  • the first message response message is used to notify the first network device to switch the configuration information reserved for the terminal device by the second network device and/or the third network device from the conditions configured by the terminal device. removed from the configuration information, that is, the second network device and/or the third network device are unwilling to continue to be associated with the terminal device as a conditional handover candidate cell.
  • the second network device and/or the third network device may directly or indirectly (for example, through the MN) send a resource release message to the terminal device.
  • the resource release message may instruct the terminal device to remove the information of the second network device and/or the third network device from its stored conditional handover configuration information.
  • step 2b1 or step 2b2 can be performed.
  • the network device that receives the first message such as SN2 can send a message to the MN (the initiator of the first message, which may also be the PCell or SN to which the terminal device is connected). ) returns the first message response message.
  • the first message response message is used to respond to the message initiator's request to release resources reserved for the terminal device.
  • the MN may remove the configuration information reserved by SN2 for the terminal device from the locally saved conditional switching configuration information of the terminal device configuration.
  • the first message response message is used to notify the first network device that the second network device and/or the third network device agrees to be a conditional handover candidate cell for the terminal device.
  • the third network device A message response message includes at least one of the following:
  • Information 2-1 The data forwarding address assigned by the second network device and/or the third network device.
  • Information 2-2 Cell configuration information configured or updated by the terminal device for the cell corresponding to the second network device and/or the third network device.
  • the cell configuration information of the above information 2-2 please refer to the relevant description of the above information 1-5, which will not be described again here.
  • the effective duration information of the cell corresponding to the second network device and/or the third network device agrees to serve as a conditional handover candidate cell for the terminal device.
  • Example of information 2-3 In one case, the first network device receives a first message response message from the second network device, and the first message response message includes the second network device's corresponding cell to continue to serve as a terminal device. Valid duration information of conditional handover candidate cells. In another case, the first network device receives a first message response message from the third network device. The first message response message includes the valid time period for the cell corresponding to the third network device to continue to serve as a conditional handover candidate cell for the terminal device. information.
  • the resource reservation behavior of conditional handover candidate cells itself is equivalent to a waste of network resources.
  • the valid duration information of the conditional switching candidate cell By setting the valid duration information of the conditional switching candidate cell, the corresponding reserved resources can be released when the reservation duration expires, thereby improving the communication system resource reservation efficiency.
  • the MN to which the terminal device is connected (the initiator of the first message, which may also be the PCell or SN to which the terminal device is connected) can negotiate a new valid period with the conditional handover candidate cell again. After negotiation and agreement, the new validity period will be recalculated.
  • Information 2-4 The cell identifier assigned by the second network device and/or the third network device to itself as a conditional handover candidate cell.
  • the cell identifier of the above information 2-4 please refer to the relevant description of the above information 1-1, which will not be described again here.
  • the method further includes:
  • the first network device receives a second message sent by the fourth network device.
  • the second message is used to notify the first network device that the terminal device successfully accesses or switches to the fourth network device.
  • the fourth network device is at least one of the PCell, MN or SN to which the terminal device is connected after conditional handover occurs.
  • the first network device may be the MN to which the terminal device in Figure 2 is connected
  • the fourth network device may be the SN1 to which the terminal device in Figure 2 is connected after this round of conditional handover (ie, the target cell of this round of handover).
  • SN1 may notify the MN terminal of successful access to SN1 through the second message.
  • the method further includes:
  • the first network device sends a third message to the third network device.
  • the third message is used to notify the third network device to stop sending data to the terminal device.
  • the third network device is at least one of the PCell, MN or SN that the terminal device is connected to before the conditional handover occurs.
  • the first network device may be the MN to which the terminal device in Figure 2 is connected
  • the third network device may be the SN0 to which the terminal device in Figure 2 is connected before this round of conditional handover.
  • the MN may notify SN0 to stop sending data to the terminal device through the third message.
  • the method further includes:
  • the first network device sends a fourth message to the fourth network device.
  • the fourth message is used for conditional handover control.
  • the fourth network device is at least one of the PCell, MN or SN to which the terminal device is connected after conditional handover occurs.
  • the fourth network device may be the target cell of this round of conditional handover, such as SN1 in Figure 2.
  • the MN may send the data forwarding address to SN1 through the fourth message.
  • the data forwarding task between SN1 and other conditional handover candidate SNs is triggered at the appropriate time.
  • the fourth message includes:
  • the cells corresponding to the second network device and/or the third network device serve as valid duration information of conditional handover candidate cells for the terminal device.
  • the data forwarding address allocated by the second network device and/or the third network device contained in the above fourth message may have the following examples:
  • Example 1 Obtained through the aforementioned first message response message (see information 2-1), that is: the data forwarding address re-obtained through the first message response message.
  • Example 2 Reuse a previously assigned data forwarding address.
  • the terminal device connection SN0 is started.
  • SN1 and SN2 send the data forwarding address to the MN.
  • the MN sends the data forwarding addresses of SN1 and SN2 to SN0 in a timely manner.
  • the terminal device switches from SN0 to SN1.
  • the MN can forward the stored data forwarding address allocated by SN2 to SN1 for SN1 to forward data to SN2.
  • the MN does not re-apply for a new data forwarding address from SN2, but forwards the address sent to SN0 to SN1.
  • the fourth network device can trigger data forwarding at an appropriate time.
  • the SN2 cell can send user data to the terminal equipment in time after access, ensuring the continuity of user services.
  • the method further includes:
  • the first network device sends a fifth message to the fourth network device.
  • the fifth message is used to assist at least one of the PCell, MN or SN to which the terminal device is currently connected to perform data forwarding.
  • the fifth message includes at least one of the following:
  • the first network device may be the MN to which the terminal device in Figure 2 is connected
  • the fourth network device may be the SN1 to which the terminal device in Figure 2 is connected after this round of conditional handover.
  • the terminal device After the terminal device switches to SN1, it needs to forward data to SN0 or SN2 at the appropriate time.
  • the timing of data forwarding is difficult to grasp. If the data is forwarded too early, the terminal device will not undergo the next round of switching, and the previously forwarded data will waste network transmission and storage resources. If data forwarding is delayed, there may be a problem that the terminal device needs to wait extra for data forwarding when switching to a new cell, resulting in poor user experience.
  • the first network device MN can thus send the fifth message to the fourth network device SN1.
  • the fifth information can assist the fourth network device to trigger data forwarding at an appropriate time. On the one hand, it ensures user experience, and on the other hand, it reduces the waste of network resources as much as possible.
  • the information included in the fifth message may be determined based on the auxiliary information reported by the terminal device, or may be determined independently by the network device that sends the fifth message.
  • the sending timing of the first message, the second message, the third message, the fourth message and the fifth message is not limited and can be flexibly set according to the actual scenario.
  • the method further includes:
  • the first network device sends fourth instruction information to the terminal device.
  • the fourth instruction information is used to trigger the terminal device to report auxiliary information.
  • the method further includes:
  • the first network device sends event configuration information to the terminal device, where the event configuration information is used to configure event-related configurations related to auxiliary information reporting.
  • event configuration information is used to configure event-related configurations related to auxiliary information reporting.
  • the event configuration information includes at least one of the following:
  • the event type identifier corresponding to the event related to the auxiliary information reporting
  • the reporting cycle corresponding to the events related to the auxiliary information reporting
  • the trigger reporting threshold corresponding to the event related to the auxiliary information reporting is the trigger reporting threshold corresponding to the event related to the auxiliary information reporting.
  • only one of the steps of sending the fourth indication information and sending the event configuration information may be performed, or both steps may be performed, and the two steps may not have a timing relationship.
  • auxiliary information reporting may include the following types of trigger events:
  • Event type 1 Triggered by network device sending instruction information
  • the terminal device When the terminal device receives the indication information sent by the first network device or the fourth network device, it triggers reporting of the auxiliary information.
  • Event Type 2 Protocol predefined event triggering method
  • the event that triggers the terminal device to report the auxiliary information does not need to be notified to the terminal device through the network device, but is given in a protocol default manner.
  • the default event-related configuration may be configured to the terminal device through dedicated signaling sent by the network device, or may be given by default through the protocol.
  • Event type 3 Network device dynamic configuration event triggering method
  • the network device sends the configuration related to the trigger event to the terminal device through dedicated signaling.
  • the configuration includes event type identification and/or parameters related to the corresponding event.
  • the parameters related to the corresponding event may include at least one of a reporting period, a number of reporting times, and a triggering reporting threshold.
  • the events corresponding to the above event type 2 or event type 3 can be any of the following events:
  • the terminal device begins to perform the conditional switching evaluation task
  • the terminal equipment begins to perform the conditional handover evaluation task and the cell measurement result of the PCell connected to the terminal equipment is less than or equal to the fifth threshold;
  • the terminal equipment starts the conditional handover evaluation task and the cell measurement result of the PSCell connected to the terminal equipment is less than or equal to the sixth threshold;
  • the terminal device stops executing the conditional handover evaluation task.
  • the method further includes:
  • the first network device receives the auxiliary information reported by the terminal device, and the auxiliary information is related to the conditional handover candidate cell.
  • S610 and/or S620 may be executed first and then S630 may be executed, or only S630 may be executed.
  • the terminal device may independently decide to report the auxiliary information.
  • the auxiliary information includes at least one of the following:
  • Auxiliary information 1 The terminal equipment predicts the cell identity corresponding to the cell that is most likely to perform conditional handover next time;
  • Auxiliary information 2 The terminal equipment speculates that the cell identifier corresponding to the cell that may perform conditional handover next time, and the number of reported cell identifiers cannot exceed M; where M is a positive integer;
  • Auxiliary information 3 The cell identifiers of the N1 cells with the best measurement results among the conditional handover candidate cells measured by the terminal equipment; where N1 is a positive integer;
  • Auxiliary information 4 The cell identifiers of the N1 cells with the best measurement results among the conditional handover candidate cells measured by the terminal equipment and the measurement results of the corresponding cells;
  • Auxiliary information 5 The cell identifier corresponding to the cell whose measurement result is greater than or equal to the first threshold among the conditional handover candidate cells measured by the terminal equipment;
  • Auxiliary information 6 The cell identifier corresponding to the cell whose measurement result is greater than or equal to the first threshold among the conditional handover candidate cells measured by the terminal equipment and the measurement result of the corresponding cell;
  • Auxiliary information 7 The cell identifier corresponding to the cell whose measurement result is greater than or equal to the second threshold among the conditional handover candidate cells measured by the terminal equipment, and the number of reported cell identifiers cannot exceed N2; where N2 is a positive integer;
  • Auxiliary information 8 Among the conditional handover candidate cells measured by the terminal equipment, the cell identifier corresponding to the cell whose measurement result is greater than or equal to the second threshold and the measurement result of the corresponding cell, and the number of reported cells cannot exceed N2 at most;
  • Auxiliary information 9 The cell identifier corresponding to the cell where the ratio of the measurement result of the conditional handover candidate cell measured by the terminal equipment to the corresponding conditional handover event triggering threshold is greater than or equal to the third threshold;
  • Auxiliary information 10 The cell identifier corresponding to the cell where the ratio of the measurement result of the conditional handover candidate cell measured by the terminal equipment to the corresponding conditional handover event triggering threshold is greater than or equal to the third threshold and the measurement result of the corresponding cell;
  • Auxiliary information 11 The cell identifier corresponding to the cell where the ratio of the measurement result of the conditional handover candidate cell measured by the terminal equipment to the corresponding conditional handover event triggering threshold is greater than or equal to the fourth threshold, and the number of reported cells cannot exceed N3 at most. ; Among them, N3 is a positive integer;
  • Auxiliary information 12 The ratio of the measurement result of the conditional handover candidate cell measured by the terminal equipment to the corresponding conditional handover event triggering threshold is greater than or equal to the fourth threshold, the corresponding cell identifier and the measurement result of the corresponding cell, and the reported cell The number cannot exceed N3 at most.
  • auxiliary information 9 For example, assuming that the measurement result of conditional handover candidate cell A currently measured by the terminal equipment is W1, and the trigger threshold corresponding to the handover condition event associated with conditional handover candidate cell A is W2, then if If the ratio of W1 and W2 is greater than or equal to the corresponding threshold, when the reporting event is triggered (see description below), it is considered that the auxiliary information related to the cell can be reported.
  • the above measurement results may include cell level measurement results and/or beam level measurement results.
  • the cell-level measurement results or the beam-level measurement results may include at least one of the following measurements: RSRP (Reference Signal Received Power, reference signal received power), RSRQ (Reference Signal Received Quality, reference signal received quality) and SINR (Signal to Interference plus Noise Ratio, signal-to-noise ratio).
  • At least one of the above parameter M, parameter N1, parameter first threshold, parameter second threshold, parameter N2, parameter third threshold, parameter N3, parameter fourth threshold is configured through at least one of the following methods: protocol default configuration method, System broadcast message mode and terminal device-specific signaling mode.
  • the conditional handover control method in the embodiment of the present application can solve the problem of data forwarding between different candidate cells during the continuous conditional handover process, and ensure the service continuity of the terminal equipment during the continuous conditional handover process.
  • FIG. 7 is a schematic flowchart of a conditional switching control method 700 according to an embodiment of the present application. This method can optionally be applied to the system shown in Figure 1, but is not limited thereto. The method includes at least part of the following.
  • the second network device receives the first message sent by the first network device, and the first message is used for conditional handover control;
  • the first network device is at least one of PCell, MN or SN to which the terminal device is currently connected; and the second network device is a conditional handover candidate cell associated with the terminal device.
  • the relationship between the first network device and the second network device includes at least one of the following:
  • the first network device is the PCell currently connected to the terminal device, and the second network device is the PCell related to the conditional switching associated with the terminal device;
  • the first network device is the MN to which the terminal device is currently connected, and the second network device is the MN related to the conditional handover associated with the terminal device;
  • the first network device is the MN or SN to which the terminal device is currently connected
  • the second network device is the SN related to the conditional handover associated with the terminal device.
  • the first message includes at least one of the following:
  • the cell identifier corresponding to the candidate cell for handover conditional access of the terminal equipment
  • the first indication information is used to indicate that the conditional handover candidate cell accessed by the terminal device is not a cell corresponding to the second network device;
  • the second indication information is used to request the second network device to provide a data forwarding address
  • the third indication information is used to request the second network device to agree to continue to serve as a conditional handover candidate cell for the terminal device;
  • the cell configuration information used by the terminal equipment in the cell connected before the conditional handover is at least one of the cell corresponding to the SN, the cell corresponding to the MN, or the PCell to which the terminal equipment was connected before the conditional handover;
  • the location information of the terminal device is the location information of the terminal device.
  • the first message is used for at least one of the following:
  • the method further includes:
  • the second network device sends and receives a first message response message to the first network device
  • the first message response message is used to notify the first network device to remove the configuration information reserved by the second network device for the terminal device from the conditional switching configuration information configured by the terminal device; or, the first message The response message is used to notify the first network device that the second network device agrees to continue to serve as a conditional handover candidate cell for the terminal device.
  • the first message response message when used to notify the first network device that the second network device agrees to continue to serve as a conditional handover candidate cell for the terminal device, includes the following: At least one of:
  • the data forwarding address assigned by the second network device is assigned by the second network device
  • the cell corresponding to the second network device has cell configuration information configured or updated by the terminal device;
  • the second network device assigns a cell identifier to itself as a conditional handover candidate cell.
  • FIG. 8 is a schematic flowchart of a conditional switching control method 800 according to an embodiment of the present application. This method can optionally be applied to the system shown in Figure 1, but is not limited thereto. The method includes at least part of the following.
  • the third network device receives the first message sent by the first network device, and the first message is used for conditional switching control;
  • the first network device is at least one of the PCell, MN or SN to which the terminal device is currently connected; the third network device is at least one of the PCell, MN or SN to which the terminal device is connected before conditional handover occurs. .
  • the first message includes at least one of the following:
  • the cell identifier corresponding to the candidate cell for handover conditional access of the terminal equipment
  • the first indication information is used to indicate that the conditional handover candidate cell accessed by the terminal device is not a cell corresponding to the third network device;
  • the second indication information is used to request the third network device to provide a data forwarding address
  • the third indication information is used to request the third network device to agree to serve as a conditional handover candidate cell for the terminal device;
  • the cell configuration information used by the terminal equipment in the cell connected before the conditional handover is at least one of the cell corresponding to the SN, the cell corresponding to the MN, or the PCell to which the terminal equipment was connected before the conditional handover;
  • the location information of the terminal device is the location information of the terminal device.
  • the first message is used for at least one of the following:
  • the method further includes:
  • the third network device sends and receives a first message response message to the first network device
  • the first message response message is used to notify the first network device to remove the configuration information reserved by the third network device for the terminal device from the conditional switching configuration information configured by the terminal device; or, the first message The response message is used to notify the first network device that the third network device agrees to serve as a conditional handover candidate cell for the terminal device.
  • the first message response message when used to notify the first network device that the third network device agrees to serve as a conditional handover candidate cell for the terminal device, includes at least the following: one:
  • the data forwarding address assigned by the third network device is assigned by the third network device.
  • the cell corresponding to the third network device has cell configuration information configured or updated by the terminal device;
  • the cell corresponding to the third network device agrees to be the valid duration information of the conditional handover candidate cell for the terminal device;
  • the third network device assigns a cell identifier to itself as a conditional handover candidate cell.
  • the method further includes:
  • the third network device receives a third message sent by the first network device.
  • the third message is used to notify the third network device to stop sending data to the terminal device.
  • Figure 10 is a schematic flowchart of a conditional switching control method 1000 according to an embodiment of the present application. This method can optionally be applied to the system shown in Figure 1, but is not limited thereto. The method includes at least part of the following.
  • the fourth network device receives the fourth message sent by the first network device.
  • the fourth message is used for conditional handover control;
  • the first network device is at least one of the PCell, MN or SN to which the terminal device is currently connected; the fourth network device is at least one of the PCell, MN or SN to which the terminal device is connected after conditional handover occurs. .
  • the fourth message includes:
  • the cells corresponding to the second network device and/or the third network device serve as valid duration information of conditional handover candidate cells for the terminal device.
  • the method further includes:
  • the fourth network device sends a second message to the first network device.
  • the second message is used to notify the first network device that the terminal device successfully accesses or switches to the fourth network device.
  • the method further includes:
  • the fourth network device sends fourth instruction information to the terminal device.
  • the fourth instruction information is used to trigger the auxiliary information on the terminal device.
  • the method further includes:
  • the fourth network device sends event configuration information to the terminal device.
  • the event configuration information is used to configure event-related configurations related to the auxiliary information reporting;
  • the event configuration information includes at least one of the following:
  • the event type identifier corresponding to the event related to the auxiliary information reporting
  • the reporting cycle corresponding to the events related to the auxiliary information reporting
  • the trigger reporting threshold corresponding to the event related to the auxiliary information reporting is the trigger reporting threshold corresponding to the event related to the auxiliary information reporting.
  • the method further includes:
  • the fourth network device receives the auxiliary information reported by the terminal device, and the auxiliary information is related to the conditional handover candidate cell.
  • the auxiliary information includes at least one of the following:
  • the terminal equipment speculates the cell identity corresponding to the cell that is most likely to perform conditional handover next time;
  • the terminal equipment speculates on the cell identifiers corresponding to the cells that may perform conditional handover next time, and the number of reported cell identifiers cannot exceed M at most;
  • the ratio of the measurement result of the conditional handover candidate cell measured by the terminal equipment to the corresponding conditional handover event triggering threshold is greater than or equal to the fourth threshold.
  • the corresponding cell identifier and the measurement result of the corresponding cell, and the maximum number of reported cells cannot be More than N3.
  • the method further includes:
  • the fourth network device receives the fifth message sent by the first network device.
  • the fifth message is used to assist at least one of the PCell, MN or SN to which the terminal device is currently connected to perform data forwarding.
  • the fifth message includes at least one of the following:
  • the location information of the terminal device is the location information of the terminal device.
  • Figure 13 is a schematic flowchart of a conditional switching control method 1300 according to an embodiment of the present application. This method can optionally be applied to the system shown in Figure 1, but is not limited thereto. The method includes at least part of the following.
  • the terminal device reports auxiliary information to the first network device and/or the fourth network device, where the auxiliary information is related to the conditional handover candidate cell;
  • the first network device is at least one of the PCell, MN or SN to which the terminal device is currently connected; the fourth network device is at least one of the PCell, MN or SN to which the terminal device is connected after conditional handover occurs. .
  • the auxiliary information includes at least one of the following:
  • the terminal equipment speculates the cell identity corresponding to the cell that is most likely to perform conditional handover next time;
  • the terminal equipment speculates on the cell identifiers corresponding to the cells that may perform conditional handover next time, and the number of reported cell identifiers cannot exceed M at most;
  • the ratio of the measurement result of the conditional handover candidate cell measured by the terminal equipment to the corresponding conditional handover event triggering threshold is greater than or equal to the fourth threshold.
  • the corresponding cell identifier and the measurement result of the corresponding cell, and the maximum number of reported cells cannot be More than N3.
  • the method further includes:
  • the terminal device receives fourth indication information sent by the first network device and/or the fourth network device, and the fourth indication information is used to trigger the terminal device to report the auxiliary information.
  • the auxiliary information reporting by the terminal device is triggered when a default event is satisfied or triggered when an event configured by the first network device and/or the fourth network device is satisfied.
  • the method further includes:
  • the terminal device receives the event configuration information sent by the first network device and/or the fourth network device.
  • the event configuration information is used to configure the configuration associated with the event related to the auxiliary information reporting;
  • the event configuration information includes at least one of the following:
  • the event type identifier corresponding to the event related to the auxiliary information reporting
  • the reporting cycle corresponding to the events related to the auxiliary information reporting
  • the trigger reporting threshold corresponding to the event related to the auxiliary information reporting is the trigger reporting threshold corresponding to the event related to the auxiliary information reporting.
  • terminal device execution method 1300 in this embodiment please refer to the relevant description of the terminal device in the above-mentioned method 300. For the sake of brevity, details will not be described again here.
  • Figure 15 is a schematic structural diagram of a first network device 1500 according to an embodiment of the present application.
  • the device can optionally be applied to the system shown in Figure 1, but is not limited thereto.
  • This device includes at least some of the following.
  • Sending unit 1510 configured to send a first message, the first message being used for conditional switching control
  • the first network device is at least one of the primary cell PCell, the primary node MN, or the secondary node SN to which the terminal device is currently connected.
  • the sending unit 1510 is also configured to send the first message to the second network device and/or the third network device;
  • the second network device is a conditional handover candidate cell associated with the terminal device
  • the third network device is at least one of the PCell, MN or SN connected to the terminal device before the conditional handover occurs.
  • the relationship between the first network device and the second network device includes at least one of the following:
  • the first network device is the PCell to which the terminal device is currently connected, and the second network device is the PCell related to the conditional switching associated with the terminal device;
  • the first network device is the MN to which the terminal device is currently connected, and the second network device is the MN related to the conditional handover associated with the terminal device;
  • the first network device is the MN or SN to which the terminal device is currently connected
  • the second network device is the SN related to the conditional handover associated with the terminal device.
  • the first message includes at least one of the following:
  • the cell identifier corresponding to the conditional handover candidate cell for the terminal equipment access
  • the first indication information is used to indicate that the conditional handover candidate cell accessed by the terminal device is not a cell corresponding to the second network device and/or the third network device;
  • the second indication information is used to request the second network device and/or the third network device to provide a data forwarding address
  • the third indication information is used to request the second network device and/or the third network device to agree to serve as a conditional handover candidate cell for the terminal device;
  • the cell configuration information used by the terminal device in the cell connected before the conditional handover is at least one of the cell corresponding to the SN, the cell corresponding to the MN, or the PCell to which the terminal device was connected before the conditional handover. one;
  • the location information of the terminal device is the location information of the terminal device.
  • the first message is used for at least one of the following:
  • the first network device further includes:
  • the first receiving unit 1610 is configured to receive the first message response message sent by the second network device and/or the third network device;
  • the first message response message is used to notify the first network device to switch the configuration information reserved by the second network device and/or the third network device for the terminal device from the condition configured by the terminal device. removed from the information; or, the first message response message is used to notify the first network device that the second network device and/or the third network device agrees to be a conditional handover candidate cell for the terminal device.
  • the first message response message is used to notify the first network device that the second network device and/or the third network device agree to switch candidate cells under conditions of being a terminal device.
  • the first message response message includes at least one of the following:
  • the data forwarding address assigned by the second network device and/or the third network device is assigned by the second network device and/or the third network device.
  • the cell corresponding to the second network device and/or the third network device is the cell configuration information configured or updated by the terminal device;
  • the effective duration information of the cell corresponding to the second network device and/or the third network device agrees to serve as a conditional handover candidate cell for the terminal device;
  • the second network device and/or the third network device allocates a cell identity to itself as a conditional handover candidate cell.
  • the first network device further includes:
  • the second receiving unit 1620 is configured to receive a second message sent by the fourth network device, where the second message is used to notify the first network device that the terminal device successfully accesses or switches to the fourth network device;
  • the fourth network device is at least one of PCell, MN or SN to which the terminal device is connected after conditional handover occurs.
  • the sending unit 1510 is further configured to send a third message to a third network device, where the third message is used to notify the third network device to stop sending data to the terminal device;
  • the third network device is at least one of the PCell, MN or SN connected to the terminal device before the conditional handover occurs.
  • the sending unit 1510 is further configured to send a fourth message to a fourth network device, where the fourth message is used for conditional handover control;
  • the fourth network device is at least one of PCell, MN or SN to which the terminal device is connected after conditional handover occurs.
  • the fourth message includes:
  • the cells corresponding to the second network device and/or the third network device serve as valid duration information of conditional handover candidate cells for the terminal device.
  • the sending unit 1510 is further configured to send a fifth message to the fourth network device, where the fifth message is used to assist the terminal device in the PCell, MN or SN currently connected. At least one performs data forwarding.
  • the fifth message includes at least one of the following:
  • the first network device further includes:
  • the third receiving unit 1630 is configured to receive the auxiliary information reported by the terminal device, where the auxiliary information is related to the conditional handover candidate cell.
  • the auxiliary information includes at least one of the following:
  • the terminal device speculates the cell identity corresponding to the cell that is most likely to perform conditional handover next time;
  • the terminal device speculates on the cell identifiers corresponding to the cells that may perform conditional handover next time, and the number of reported cell identifiers cannot exceed M at most;
  • the sending unit 1510 is further configured to send fourth indication information to the terminal device, where the fourth indication information is used to trigger the terminal device to report the auxiliary information.
  • the sending unit 1510 is further configured to send event configuration information to the terminal device, where the event configuration information is used to configure event-related configurations related to the auxiliary information reporting;
  • the event configuration information includes at least one of the following:
  • the event type identifier corresponding to the event related to the auxiliary information reporting
  • the reporting period corresponding to the event related to the auxiliary information reporting
  • the trigger reporting threshold corresponding to the event related to the auxiliary information reporting is the trigger reporting threshold corresponding to the event related to the auxiliary information reporting.
  • the first network device 1500 in the embodiment of the present application can implement the corresponding functions of the first network device in the foregoing method embodiment.
  • each module (sub-module, unit or component, etc.) in the first network device 1500 please refer to the corresponding description in the above method embodiment, and will not be described again here.
  • the functions described with respect to each module (sub-module, unit or component, etc.) in the first network device 1500 in the embodiment of the application can be implemented by different modules (sub-module, unit or component, etc.), or can be implemented by Implemented by the same module (submodule, unit or component, etc.).
  • Figure 17 is a schematic structural diagram of a second network device 1700 according to an embodiment of the present application.
  • the device can optionally be applied to the system shown in Figure 1, but is not limited thereto.
  • This device includes at least some of the following.
  • the receiving unit 1710 is configured to receive the first message sent by the first network device, where the first message is used for conditional handover control;
  • the first network device is at least one of PCell, MN or SN to which the terminal device is currently connected; and the second network device is a conditional handover candidate cell associated with the terminal device.
  • the relationship between the first network device and the second network device includes at least one of the following:
  • the first network device is the PCell to which the terminal device is currently connected, and the second network device is the PCell related to the conditional switching associated with the terminal device;
  • the first network device is the MN to which the terminal device is currently connected, and the second network device is the MN related to the conditional handover associated with the terminal device;
  • the first network device is the MN or SN to which the terminal device is currently connected
  • the second network device is the SN related to the conditional handover associated with the terminal device.
  • the first message includes at least one of the following:
  • the cell identifier corresponding to the conditional handover candidate cell for the terminal equipment access
  • the first indication information is used to indicate that the conditional handover candidate cell accessed by the terminal device is not a cell corresponding to the second network device;
  • the second indication information is used to request the second network device to provide a data forwarding address
  • the third indication information is used to request the second network device to agree to continue to serve as a conditional handover candidate cell for the terminal device;
  • the cell configuration information used by the terminal device in the cell connected before the conditional handover is at least one of the cell corresponding to the SN, the cell corresponding to the MN, or the PCell to which the terminal device was connected before the conditional handover. one;
  • the location information of the terminal device is the location information of the terminal device.
  • the first message is used for at least one of the following:
  • the second network device further includes:
  • the sending unit 1810 is also configured to send and receive a first message response message to the first network device
  • the first message response message is used to notify the first network device to remove the configuration information reserved by the second network device for the terminal device from the conditional switching configuration information configured by the terminal device; or , the first message response message is used to notify the first network device that the second network device agrees to continue to serve as a conditional handover candidate cell for the terminal device.
  • the first message response message when used to notify the first network device that the second network device agrees to continue to serve as a conditional handover candidate cell for the terminal device, the first The message response message includes at least one of the following:
  • the data forwarding address assigned by the second network device is assigned by the second network device
  • the cell corresponding to the second network device is the cell configuration information configured or updated by the terminal device;
  • the second network device assigns a cell identity to itself as a conditional handover candidate cell.
  • the second network device 1700 in the embodiment of the present application can implement the corresponding functions of the second network device in the foregoing method embodiment.
  • each module (sub-module, unit or component, etc.) in the second network device 1700 please refer to the corresponding description in the above method embodiment, and will not be described again here.
  • the functions described with respect to each module (sub-module, unit or component, etc.) in the second network device 1700 in the embodiment of the application can be implemented by different modules (sub-module, unit or component, etc.), or can be implemented by Implemented by the same module (submodule, unit or component, etc.).
  • Figure 19 is a schematic structural diagram of a third network device 1900 according to an embodiment of the present application.
  • the device can optionally be applied to the system shown in Figure 1, but is not limited thereto.
  • This device includes at least some of the following.
  • the receiving unit 1910 is configured to receive the first message sent by the first network device, where the first message is used for conditional handover control;
  • the first network device is at least one of the PCell, MN or SN to which the terminal device is currently connected;
  • the third network device is at least one of the PCell, MN or SN to which the terminal device is connected before conditional handover occurs. at least one of.
  • the first message includes at least one of the following:
  • the cell identifier corresponding to the conditional handover candidate cell for the terminal equipment access
  • the first indication information is used to indicate that the conditional handover candidate cell accessed by the terminal device is not a cell corresponding to the third network device;
  • the second indication information is used to request the third network device to provide a data forwarding address
  • the third indication information is used to request the third network device to agree to serve as a conditional switching candidate cell for the terminal device;
  • the cell configuration information used by the terminal device in the cell connected before the conditional handover is at least one of the cell corresponding to the SN, the cell corresponding to the MN, or the PCell to which the terminal device was connected before the conditional handover. one;
  • the location information of the terminal device is the location information of the terminal device.
  • the first message is used for at least one of the following:
  • the third network device further includes:
  • Sending unit 2010, configured to send and receive a first message response message to the first network device
  • the first message response message is used to notify the first network device to remove the configuration information reserved by the third network device for the terminal device from the conditional switching configuration information configured by the terminal device; or, The first message response message is used to notify the first network device that the third network device agrees to serve as a conditional handover candidate cell for the terminal device.
  • the first message response message when used to notify the first network device that the third network device agrees to serve as a conditional switching candidate cell for the terminal device, the first message The response message includes at least one of the following:
  • the data forwarding address assigned by the third network device is assigned by the third network device.
  • the cell corresponding to the third network device is the cell configuration information configured or updated by the terminal device;
  • the cell corresponding to the third network device agrees to be the valid duration information of the conditional handover candidate cell for the terminal device;
  • the third network device assigns a cell identity to itself as a conditional handover candidate cell.
  • the receiving unit 1910 is also configured for a third network device to receive a third message sent by the first network device, where the third message is used to notify the third network device to stop sending data to the terminal.
  • the device sends data.
  • the third network device 1900 in the embodiment of the present application can implement the corresponding functions of the third network device in the foregoing method embodiment.
  • each module (sub-module, unit or component, etc.) in the third network device 1900 please refer to the corresponding description in the above method embodiment, and will not be described again here.
  • the functions described with respect to each module (sub-module, unit or component, etc.) in the third network device 1900 in the embodiment of the application can be implemented by different modules (sub-module, unit or component, etc.), or can be implemented by Implemented by the same module (submodule, unit or component, etc.).
  • Figure 21 is a schematic structural diagram of a fourth network device 2100 according to an embodiment of the present application.
  • the device can optionally be applied to the system shown in Figure 1, but is not limited thereto.
  • This device includes at least some of the following.
  • the receiving unit 2110 is configured to receive a fourth message sent by the first network device, where the fourth message is used for conditional handover control;
  • the first network device is at least one of the PCell, MN or SN to which the terminal device is currently connected; the fourth network device is at least one of the PCell, MN or SN to which the terminal device is connected after conditional handover occurs. at least one of.
  • the fourth message includes:
  • the cells corresponding to the second network device and/or the third network device serve as valid duration information of conditional handover candidate cells for the terminal device.
  • the receiving unit 2110 is further configured to receive a fifth message sent by the first network device, where the fifth message is used to assist the terminal device in the PCell, MN or SN currently connected. At least one of them performs data forwarding.
  • the fifth message includes at least one of the following:
  • the location information of the terminal device is the location information of the terminal device.
  • the device further includes:
  • the first sending unit 2210 is configured to send a second message to the first network device, where the second message is used to notify the first network device that the terminal device successfully accesses or switches to the fourth network device. .
  • the receiving unit 2110 is further configured to receive auxiliary information reported by the terminal device, where the auxiliary information is related to the conditional handover candidate cell.
  • the auxiliary information includes at least one of the following:
  • the terminal device speculates the cell identity corresponding to the cell that is most likely to perform conditional handover next time;
  • the terminal device speculates on the cell identifiers corresponding to the cells that may perform conditional handover next time, and the number of reported cell identifiers cannot exceed M at most;
  • the device further includes:
  • the second sending unit 2220 is configured to send fourth indication information to the terminal device, where the fourth indication information is used to trigger the terminal device to report the auxiliary information.
  • the second sending unit 2220 is further configured to send event configuration information to the terminal device, where the event configuration information is used to configure event-related configurations related to the auxiliary information reporting;
  • the event configuration information includes at least one of the following:
  • the event type identifier corresponding to the event related to the auxiliary information reporting
  • the reporting period corresponding to the event related to the auxiliary information reporting
  • the triggering reporting threshold corresponding to the event related to the auxiliary information reporting.
  • the fourth network device 2100 in the embodiment of the present application can implement the corresponding functions of the fourth network device in the foregoing method embodiment.
  • each module (sub-module, unit or component, etc.) in the fourth network device 2100 please refer to the corresponding description in the above method embodiment, and will not be described again here.
  • the functions described with respect to each module (sub-module, unit or component, etc.) in the fourth network device 2100 in the embodiment of the application can be implemented by different modules (sub-module, unit or component, etc.), or can be implemented by Implemented by the same module (submodule, unit or component, etc.).
  • Figure 23 is a schematic structural diagram of a terminal device 2300 according to an embodiment of the present application.
  • the device can optionally be applied to the system shown in Figure 1, but is not limited thereto. This device includes at least some of the following.
  • the reporting unit 2310 is configured to report auxiliary information to the first network device and/or the fourth network device, where the auxiliary information is related to the conditional handover candidate cell;
  • the first network device is at least one of the PCell, MN or SN to which the terminal device is currently connected; the fourth network device is at least one of the PCell, MN or SN to which the terminal device is connected after conditional handover occurs. at least one of.
  • the auxiliary information includes at least one of the following:
  • the terminal device speculates the cell identity corresponding to the cell that is most likely to perform conditional handover next time;
  • the terminal device speculates on the cell identifiers corresponding to the cells that may perform conditional handover next time, and the number of reported cell identifiers cannot exceed M at most;
  • the ratio of the measurement result in the conditional handover candidate cell measured by the terminal equipment to the corresponding conditional handover event triggering threshold is greater than or equal to the cell identifier corresponding to the fourth threshold, and the number of reported cells cannot exceed N3 at most;
  • the device further includes:
  • the receiving unit 2410 is configured to receive fourth indication information sent by the first network device and/or the fourth network device, where the fourth indication information is used to trigger the terminal device to report the auxiliary information.
  • the auxiliary information reporting by the terminal device is triggered when a default event is satisfied or triggered when an event configured by the first network device and/or the fourth network device is satisfied.
  • the receiving unit 2410 is further configured to receive event configuration information sent by the first network device and/or the fourth network device, where the event configuration information is used to configure the connection with the auxiliary device. Configuration of event correlation related to information reporting;
  • the event configuration information includes at least one of the following:
  • the event type identifier corresponding to the event related to the auxiliary information reporting
  • the reporting period corresponding to the event related to the auxiliary information reporting
  • the trigger reporting threshold corresponding to the event related to the auxiliary information reporting is the trigger reporting threshold corresponding to the event related to the auxiliary information reporting.
  • the terminal device 2300 in the embodiment of the present application can implement the corresponding functions of the terminal device in the foregoing method embodiment.
  • each module (sub-module, unit or component, etc.) in the terminal device 2300 please refer to the corresponding description in the above method embodiment, and will not be described again here.
  • the functions described for each module (sub-module, unit or component, etc.) in the terminal device 2300 in the embodiment of the application may be implemented by different modules (sub-module, unit or component, etc.), or may be implemented by the same Module (submodule, unit or component, etc.) implementation.
  • Figure 25 is a schematic structural diagram of a communication device 2500 according to an embodiment of the present application.
  • the communication device 2500 includes a processor 2510, and the processor 2510 can call and run a computer program from the memory, so that the communication device 2500 implements the method in the embodiment of the present application.
  • communication device 2500 may also include memory 2520.
  • the processor 2510 can call and run the computer program from the memory 2520, so that the communication device 2500 implements the method in the embodiment of the present application.
  • the memory 2520 may be a separate device independent of the processor 2510, or may be integrated into the processor 2510.
  • the communication device 2500 may also include a transceiver 2530, and the processor 2510 may control the transceiver 2530 to communicate with other devices. Specifically, the communication device 2500 may send information or data to other devices, or receive information sent by other devices. information or data.
  • the transceiver 2530 may include a transmitter and a receiver.
  • the transceiver 2530 may further include an antenna, and the number of antennas may be one or more.
  • the communication device 2500 may be a network device according to the embodiment of the present application, and the communication device 2500 may implement the corresponding processes implemented by the network device in the various methods of the embodiment of the present application. For the sake of brevity, the communication device 2500 will not be mentioned here. Again.
  • the communication device 2500 can be a terminal device in the embodiment of the present application, and the communication device 2500 can implement the corresponding processes implemented by the terminal device in each method of the embodiment of the present application. For the sake of brevity, this is not mentioned here. Again.
  • Figure 26 is a schematic structural diagram of a chip 2600 according to an embodiment of the present application.
  • the chip 2600 includes a processor 2610, and the processor 2610 can call and run a computer program from the memory to implement the method in the embodiment of the present application.
  • chip 2600 may also include memory 2620.
  • the processor 2610 can call and run the computer program from the memory 2620 to implement the method executed by the terminal device or network device in the embodiment of the present application.
  • the memory 2620 may be a separate device independent of the processor 2610, or may be integrated into the processor 2610.
  • the chip 2600 may also include an input interface 2630.
  • the processor 2610 can control the input interface 2630 to communicate with other devices or chips. Specifically, it can obtain information or data sent by other devices or chips.
  • the chip 2600 may also include an output interface 2640.
  • the processor 2610 can control the output interface 2640 to communicate with other devices or chips. Specifically, it can output information or data to other devices or chips.
  • the chip can be applied to the network device in the embodiment of the present application, and the chip can implement the corresponding processes implemented by the network device in the various methods of the embodiment of the present application. For the sake of simplicity, they will not be described again. .
  • the chip can be applied to the terminal device in the embodiment of the present application, and the chip can implement the corresponding processes implemented by the terminal device in each method of the embodiment of the present application. For the sake of brevity, details will not be repeated here. .
  • the chips used in network equipment and terminal equipment can be the same chip or different chips.
  • chips mentioned in the embodiments of this application may also be called system-on-chip, system-on-a-chip, system-on-chip or system-on-chip, etc.
  • the processor mentioned above can be a general-purpose processor, a digital signal processor (DSP), an off-the-shelf programmable gate array (FPGA), an application specific integrated circuit (ASIC), or Other programmable logic devices, transistor logic devices, discrete hardware components, etc.
  • DSP digital signal processor
  • FPGA off-the-shelf programmable gate array
  • ASIC application specific integrated circuit
  • the above-mentioned general processor may be a microprocessor or any conventional processor.
  • non-volatile memory may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory.
  • non-volatile memory can be read-only memory (ROM), programmable ROM (PROM), erasable programmable read-only memory (erasable PROM, EPROM), electrically removable memory. Erase electrically programmable read-only memory (EPROM, EEPROM) or flash memory.
  • Volatile memory can be random access memory (RAM).
  • the memory in the embodiment of the present application can also be a static random access memory (static RAM, SRAM), a dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM) and so on. That is, memories in embodiments of the present application are intended to include, but are not limited to, these and any other suitable types of memories.
  • Figure 27 is a schematic block diagram of a communication system 2700 according to an embodiment of the present application.
  • the communication system 2700 includes a first network device 2710 and a second network device 2720.
  • the first network device 2710 is configured to perform the conditional handover control method performed by the first network device in the above embodiment
  • the second network device 2720 is configured to execute the conditional handover control method executed by the second network device in the above embodiment.
  • the communication system further includes:
  • the third network device 2730 is used for the control method of conditional handover executed by the third network device in the above embodiment.
  • the communication system further includes:
  • the fourth network device 2740 is used for the control method of conditional handover executed by the fourth network device in the above embodiment.
  • the communication system further includes:
  • Terminal device 2750 is used for the control method of conditional switching executed by the terminal device in the above embodiment.
  • the computer program product includes one or more computer instructions.
  • the computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted over a wired connection from a website, computer, server, or data center (such as coaxial cable, optical fiber, Digital Subscriber Line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) means to transmit to another website, computer, server or data center.
  • the computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center integrated with one or more available media.
  • the available media may be magnetic media (eg, floppy disk, hard disk, tape), optical media (eg, DVD), or semiconductor media (eg, Solid State Disk (SSD)), etc.
  • the size of the sequence numbers of the above-mentioned processes does not mean the order of execution.
  • the execution order of each process should be determined by its functions and internal logic, and should not be used in the embodiments of the present application.
  • the implementation process constitutes any limitation.

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Abstract

一种条件切换的控制方法、终端设备和网络设备。其中,一种条件切换的控制方法包括:第一网络设备发送第一消息,该第一消息用于条件切换控制;其中,该第一网络设备为终端设备当前连接的主小区PCell、主节点MN或辅节点SN中的至少之一。本申请,可以保证终端设备在连续条件切换过程中的服务连续性。

Description

条件切换的控制方法和设备 技术领域
本申请涉及通信领域,更具体地,涉及一种条件切换的控制方法和设备。
背景技术
在一种条件切换机制中,终端设备接收网络设备配置的条件切换配置信息后,开始评估每个条件切换候选小区关联的切换条件是否满足。当至少一个条件切换候选小区关联的切换条件满足时,终端设备会选择一个满足切换条件的条件切换候选小区发起切换流程。一旦成功执行一次条件切换流程,终端设备会删除全部的条件切换配置。
发明内容
本申请实施例提供一种条件切换的控制方法和设备。
本申请实施例提供一种条件切换的控制方法,包括:
第一网络设备发送第一消息,该第一消息用于条件切换控制;
其中,该第一网络设备为终端设备当前连接的主小区PCell、主节点MN或辅节点SN中的至少之一。
本申请实施例还提供一种条件切换的控制方法,包括:
第二网络设备接收第一网络设备发送的第一消息,该第一消息用于条件切换控制;
其中,该第一网络设备为终端设备当前连接的PCell、MN或SN中的至少之一;该第二网络设备为该终端设备关联的条件切换候选小区。
本申请实施例还提供一种条件切换的控制方法,包括:
第三网络设备接收第一网络设备发送的第一消息,该第一消息用于条件切换控制;
其中,该第一网络设备为该终端设备当前连接的PCell、MN或SN中的至少之一;该第三网络设备为该终端设备发生条件切换前连接的PCell、MN或SN中的至少之一。
本申请实施例还提供一种条件切换的控制方法,包括:
第四网络设备接收第一网络设备发送的第四消息,该第四消息用于条件切换控制;
其中,该第一网络设备为该终端设备当前连接的PCell、MN或SN中的至少之一;该第四网络设备为该终端设备发生条件切换后连接的PCell、MN或SN中的至少之一。
本申请实施例还提供一种条件切换的控制方法,包括:
终端设备向第一网络设备和/或第四网络设备上报辅助信息,该辅助信息与条件切换候选小区相关;
其中,该第一网络设备为该终端设备当前连接的PCell、MN或SN中的至少之一;该第四网络设备为该终端设备发生条件切换后连接的PCell、MN或SN中的至少之一。
本申请实施例还提供一种第一网络设备,包括:
发送单元,用于发送第一消息,所述第一消息用于条件切换控制;
其中,所述第一网络设备为终端设备当前连接的主小区PCell、主节点MN或辅节点SN中的至少之一。
本申请实施例还提供一种第二网络设备,包括:
接收单元,用于接收第一网络设备发送的第一消息,所述第一消息用于条件切换控制;
其中,所述第一网络设备为终端设备当前连接的PCell、MN或SN中的至少之一;所述第二网络设备为所述终端设备关联的条件切换候选小区。
本申请实施例还提供一种第三网络设备,包括:
接收单元,用于接收第一网络设备发送的第一消息,所述第一消息用于条件切换控制;
其中,所述第一网络设备为所述终端设备当前连接的PCell、MN或SN中的至少之一;所述第三网络设备为所述终端设备发生条件切换前连接的PCell、MN或SN中的至少之一。
本申请实施例还提供一种第四网络设备,包括:
接收单元,用于接收第一网络设备发送的第四消息,所述第四消息用于条件切换控制;
其中,所述第一网络设备为所述终端设备当前连接的PCell、MN或SN中的至少之一;所述第四网络设备为所述终端设备发生条件切换后连接的PCell、MN或SN中的至少之一。
本申请实施例还提供一种终端设备,包括:
上报单元,用于向第一网络设备和/或第四网络设备上报辅助信息,该辅助信息与条件切换候选小区相关;
其中,该第一网络设备为该终端设备当前连接的PCell、MN或SN中的至少之一;该第四网络设 备为该终端设备发生条件切换后连接的PCell、MN或SN中的至少之一。
本申请实施例还提供一种终端设备,包括:
上报单元,用于向第一网络设备和/或第四网络设备上报辅助信息,所述辅助信息与条件切换候选小区相关;
其中,所述第一网络设备为所述终端设备当前连接的PCell、MN或SN中的至少之一;所述第四网络设备为所述终端设备发生条件切换后连接的PCell、MN或SN中的至少之一。
本申请实施例提供一种终端设备,包括处理器和存储器。该存储器用于存储计算机程序,该处理器用于调用并运行该存储器中存储的计算机程序,以使该终端设备执行上述终端设备执行的条件切换的控制方法。
本申请实施例提供一种网络设备,包括处理器和存储器。该存储器用于存储计算机程序,该处理器用于调用并运行该存储器中存储的计算机程序,以使该网络设备执行上述任一网络设备执行的条件切换的控制方法。
本申请实施例提供一种芯片,用于实现上述的条件切换的控制方法。
具体地,该芯片包括:处理器,用于从存储器中调用并运行计算机程序,使得安装有该芯片的设备执行上述的条件切换的控制方法。
本申请实施例提供一种计算机可读存储介质,用于存储计算机程序,当该计算机程序被设备运行时使得该设备执行上述的条件切换的控制方法。
本申请实施例提供一种计算机程序产品,包括计算机程序指令,该计算机程序指令使得计算机执行上述的条件切换的控制方法。
本申请实施例提供一种计算机程序,当其在计算机上运行时,使得计算机执行上述的条件切换的控制方法。
本申请实施例提供一种通信系统,包括:
终端设备,用于执行上述的条件切换的控制方法;
网络设备,用于执行上述的条件切换的控制方法。
本申请实施例,通过第一消息控制条件切换,可以保证终端设备在连续条件切换过程中的服务连续性。
附图说明
图1是根据本申请实施例的应用场景的示意图。
图2是本申请实施例提供的示例性的条件切换的控制方法的整体流程图。
图3是根据本申请一实施例的条件切换的控制方法的示意性流程图。
图4是根据本申请另一实施例的条件切换的控制方法的示意性流程图。
图5是根据本申请另一实施例的条件切换的控制方法的示意性流程图。
图6是根据本申请另一实施例的条件切换的控制方法的示意性流程图。
图7是根据本申请另一实施例的条件切换的控制方法的示意性流程图。
图8是根据本申请另一实施例的条件切换的控制方法的示意性流程图。
图9是根据本申请另一实施例的条件切换的控制方法的示意性流程图。
图10是根据本申请另一实施例的条件切换的控制方法的示意性流程图。
图11是根据本申请另一实施例的条件切换的控制方法的示意性流程图。
图12是根据本申请另一实施例的条件切换的控制方法的示意性流程图。
图13是根据本申请另一实施例的条件切换的控制方法的示意性流程图。
图14是根据本申请另一实施例的条件切换的控制方法的示意性流程图。
图15是根据本申请一实施例的第一网络设备的示意性结构图。
图16是根据本申请另一实施例的第一网络设备的示意性结构图。
图17是根据本申请一实施例的第二网络设备的结构示意图。
图18是根据本申请另一实施例的第二网络设备的结构示意图。
图19是根据本申请一实施例的第三网络设备的结构示意图。
图20是根据本申请另一实施例的第三网络设备的结构示意图。
图21是根据本申请一实施例的第四网络设备的结构示意图。
图22是根据本申请另一实施例的第四网络设备的结构示意图。
图23是根据本申请一实施例的终端设备的结构示意图。
图24是根据本申请另一实施例的终端设备的结构示意图。
图25是根据本申请实施例的通信设备示意性框图。
图26是根据本申请实施例的芯片的示意性框图。
图27是根据本申请实施例的通信系统的示意性框图。
具体实施方式
下面将结合本申请实施例中的附图,对本申请实施例中的技术方案进行描述。
本申请实施例的技术方案可以应用于各种通信系统,例如:全球移动通讯(Global System of Mobile communication,GSM)系统、码分多址(Code Division Multiple Access,CDMA)系统、宽带码分多址(Wideband Code Division Multiple Access,WCDMA)系统、通用分组无线业务(General Packet Radio Service,GPRS)、长期演进(Long Term Evolution,LTE)系统、先进的长期演进(Advanced long term evolution,LTE-A)系统、新无线(New Radio,NR)系统、NR系统的演进系统、非授权频谱上的LTE(LTE-based access to unlicensed spectrum,LTE-U)系统、非授权频谱上的NR(NR-based access to unlicensed spectrum,NR-U)系统、非地面通信网络(Non-Terrestrial Networks,NTN)系统、通用移动通信系统(Universal Mobile Telecommunication System,UMTS)、无线局域网(Wireless Local Area Networks,WLAN)、无线保真(Wireless Fidelity,WiFi)、第五代通信(5th-Generation,5G)系统或其他通信系统等。
通常来说,传统的通信系统支持的连接数有限,也易于实现,然而,随着通信技术的发展,移动通信系统将不仅支持传统的通信,还将支持例如,设备到设备(Device to Device,D2D)通信,机器到机器(Machine to Machine,M2M)通信,机器类型通信(Machine Type Communication,MTC),车辆间(Vehicle to Vehicle,V2V)通信,或车联网(Vehicle to everything,V2X)通信等,本申请实施例也可以应用于这些通信系统。
在一种实施方式中,本申请实施例中的通信系统可以应用于载波聚合(Carrier Aggregation,CA)场景,也可以应用于双连接(Dual Connectivity,DC)场景,还可以应用于独立(Standalone,SA)布网场景。
在一种实施方式中,本申请实施例中的通信系统可以应用于非授权频谱,其中,非授权频谱也可以认为是共享频谱;或者,本申请实施例中的通信系统也可以应用于授权频谱,其中,授权频谱也可以认为是非共享频谱。
本申请实施例结合网络设备和终端设备描述了各个实施例,其中,终端设备也可以称为用户设备(User Equipment,UE)、接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置等。
终端设备可以是WLAN中的站点(STAION,ST),可以是蜂窝电话、无绳电话、会话启动协议(Session Initiation Protocol,SIP)电话、无线本地环路(Wireless Local Loop,WLL)站、个人数字处理(Personal Digital Assistant,PDA)设备、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备、下一代通信系统例如NR网络中的终端设备,或者未来演进的公共陆地移动网络(Public Land Mobile Network,PLMN)网络中的终端设备等。
在本申请实施例中,终端设备可以部署在陆地上,包括室内或室外、手持、穿戴或车载;也可以部署在水面上(如轮船等);还可以部署在空中(例如飞机、气球和卫星上等)。
在本申请实施例中,终端设备可以是手机(Mobile Phone)、平板电脑(Pad)、带无线收发功能的电脑、虚拟现实(Virtual Reality,VR)终端设备、增强现实(Augmented Reality,AR)终端设备、工业控制(industrial control)中的无线终端设备、无人驾驶(self driving)中的无线终端设备、远程医疗(remote medical)中的无线终端设备、智能电网(smart grid)中的无线终端设备、运输安全(transportation safety)中的无线终端设备、智慧城市(smart city)中的无线终端设备或智慧家庭(smart home)中的无线终端设备等。
作为示例而非限定,在本申请实施例中,该终端设备还可以是可穿戴设备。可穿戴设备也可以称为穿戴式智能设备,是应用穿戴式技术对日常穿戴进行智能化设计、开发出可以穿戴的设备的总称,如眼镜、手套、手表、服饰及鞋等。可穿戴设备即直接穿在身上,或是整合到用户的衣服或配件的一种便携式设备。可穿戴设备不仅仅是一种硬件设备,更是通过软件支持以及数据交互、云端交互来实现强大的功能。广义穿戴式智能设备包括功能全、尺寸大、可不依赖智能手机实现完整或者部分的功能,例如:智能手表或智能眼镜等,以及只专注于某一类应用功能,需要和其它设备如智能手机配合使用,如各类进行体征监测的智能手环、智能首饰等。
在本申请实施例中,网络设备可以是用于与移动设备通信的设备,网络设备可以是WLAN中的接入点(Access Point,AP),GSM或CDMA中的基站(Base Transceiver Station,BTS),也可以是WCDMA 中的基站(NodeB,NB),还可以是LTE中的演进型基站(Evolutional Node B,eNB或eNodeB),或者中继站或接入点,或者车载设备、可穿戴设备以及NR网络中的网络设备(gNB)或者未来演进的PLMN网络中的网络设备或者NTN网络中的网络设备等。
作为示例而非限定,在本申请实施例中,网络设备可以具有移动特性,例如网络设备可以为移动的设备。可选地,网络设备可以为卫星、气球站。例如,卫星可以为低地球轨道(low earth orbit,LEO)卫星、中地球轨道(medium earth orbit,MEO)卫星、地球同步轨道(geostationary earth orbit,GEO)卫星、高椭圆轨道(High Elliptical Orbit,HEO)卫星等。可选地,网络设备还可以为设置在陆地、水域等位置的基站。
在本申请实施例中,网络设备可以为小区提供服务,终端设备通过该小区使用的传输资源(例如,频域资源,或者说,频谱资源)与网络设备进行通信,该小区可以是网络设备(例如基站)对应的小区,小区可以属于宏基站,也可以属于小小区(Small cell)对应的基站,这里的小小区可以包括:城市小区(Metro cell)、微小区(Micro cell)、微微小区(Pico cell)、毫微微小区(Femto cell)等,这些小小区具有覆盖范围小、发射功率低的特点,适用于提供高速率的数据传输服务。
图1示例性地示出了一种通信系统100。该通信系统包括一个网络设备110和两个终端设备120。在一种实施方式中,该通信系统100可以包括多个网络设备110,并且每个网络设备110的覆盖范围内可以包括其它数量的终端设备120,本申请实施例对此不做限定。
在一种实施方式中,该通信系统100还可以包括移动性管理实体(Mobility Management Entity,MME)、接入与移动性管理功能(Access and Mobility Management Function,AMF)等其他网络实体,本申请实施例对此不作限定。
其中,网络设备又可以包括接入网设备和核心网设备。即无线通信系统还包括用于与接入网设备进行通信的多个核心网。接入网设备可以是长期演进(long-term evolution,LTE)系统、下一代(移动通信系统)(next radio,NR)系统或者授权辅助接入长期演进(authorized auxiliary access long-term evolution,LAA-LTE)系统中的演进型基站(evolutional node B,简称可以为eNB或e-NodeB)宏基站、微基站(也称为“小基站”)、微微基站、接入站点(access point,AP)、传输站点(transmission point,TP)或新一代基站(new generation Node B,gNodeB)等。
应理解,本申请实施例中网络/系统中具有通信功能的设备可称为通信设备。以图1示出的通信系统为例,通信设备可包括具有通信功能的网络设备和终端设备,网络设备和终端设备可以为本申请实施例中的具体设备,此处不再赘述;通信设备还可包括通信系统中的其他设备,例如网络控制器、移动管理实体等其他网络实体,本申请实施例中对此不做限定。
应理解,本文中术语“系统”和“网络”在本文中常被可互换使用。本文中术语“和/或”,仅仅是一种描述关联对象的关联关系,表示可以存在三种关系,例如,A和/或B,可以表示:单独存在A,同时存在A和B,单独存在B这三种情况。另外,本文中字符“/”,一般表示前后关联对象是一种“或”的关系。
应理解,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。
在本申请实施例的描述中,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。
为便于理解本申请实施例的技术方案,以下对本申请实施例的相关技术进行说明,以下相关技术作为可选方案与本申请实施例的技术方案可以进行任意结合,其均属于本申请实施例的保护范围。
1.条件切换机制
条件PCell(Primary cell,主小区)改变,也称作CHO(conditional handover,条件切换):源PCell发送给终端设备的切换配置消息包括至少一个条件切换目标PCell小区的配置信息以及对应条件切换目标PCell小区关联的切换条件配置信息。
条件PSCell(Primary Secondary cell,主辅小区)添加(conditional PSCell addition,CPA)或者条件PSCell修改(conditional PSCell change,CPC):PCell或PSCell发送给终端设备的切换配置消息包括至少一个条件添加或者条件修改的目标PSCell小区的配置信息以及对应条件添加或者条件修改的目标PSCell小区关联的切换条件配置信息。
相关技术的条件切换机制(CHO、CPA或者CPC)一般采用两步处理模式:第一步,终端设备接收网络设备配置的条件切换配置,该配置包含至少一个切换候选小区关联的配置信息。第二步,成功接收网络设备配置的条件切换配置信息后,终端设备开始评估每个条件切换候选小区关联的切换条件是否满足。当至少一个条件切换候选小区关联的切换条件满足时,终端设备会选择一个满足切换条件的条件切换候选小区发起切换流程。一旦成功执行一次条件切换流程,终端设备会删除全部的条件切换配置。
2DC(Dual connection,双连接)
DC架构下,一个终端设备会同时连接两个小区集合,其中一个小区集合称作MCG(Master Cell Group,主小区组)。MCG至少包括一个PCell(主小区)。可选地,MCG还可以包括至少一个SCell(Secondary Cell,辅小区)。由于MCG包含的全部小区通常部署在一个节点(node)内,因而很多场景下,MCG也可以称作MN(Master Node,主节点)。终端设备连接的另外一个小区集合称作SCG(Secondary Cell Group,辅小区组)。SCG至少包括一个主小区,该主小区称作PSCell。可选地,SCG还可以包括至少一个SCell,由于SCG包含的全部小区通常部署在一个node内,因而很多场景下,SCG也可以称作SN(Secondary Node,辅节点)。
3.数据前转
通信系统由众多的小区组成,每一个小区都有对应的信号服务范围。随着终端设备的移动,终端设备会从一个小区切换到另一个小区以保证服务的连续性。切换过程涉及控制实体的迁移,包括:由切换前通过源小区进行用户控制管理到切换后通过新的服务小区进行用户控制管理。同时切换过程也涉及用户数据的前转。需要前转的用户数据主要包括三个部分:切换前已经到达源小区虽然尝试过向终端设备传输但仍然没有获得终端设备成功接收反馈的数据,切换前已经到达源小区但没来得及传输给终端设备的数据,以及切换过程中(源小区切换命令发送后到切换目标小区完成用户数据路径转换(path switch)操作之间)从核心网发送到源小区的新数据。数据前转的目的也是为了保证终端设备服务的连续性。
在条件切换(CHO、CPC或CPA)机制中,切换过程中网络设备发生的用户数据前转(data forwarding)任务是单次且单向执行的,因为终端设备最多只会选择一个条件切换候选小区发起接入流程。一旦终端设备成功完成接入,终端设备存储的所有条件切换配置信息就会被删除。所以一次条件切换过程(或者说单次条件切换配置过程)只会涉及一次由源小区发起的数据前转。相应地,数据前转的方向只能是从终端设备源小区到至少一个条件切换候选小区。
但对于连续条件切换场景,终端设备成功执行单次条件切换后并不一定会删除之前存储的至少一个条件切换候选小区相关的配置信息。而且只要条件满足,终端设备仍然可以利用存储的条件切换配置发起新的条件切换(即:终端设备单次接收条件切换配置,多次执行条件切换)。那么对于连续条件切换场景,可能出现多个条件切换候选小区之间来回触发数据前转的情形。例如:连续条件切换会出现多次且多方向数据前转。
图2是本申请实施例提供的示例性的条件切换的控制方法的整体流程图。其中SN0为终端设备当前连接的SN(即源小区),SN1为终端设备准备切换的目标SN(即目标小区)。SN2为终端设备的条件切换候选小区。图2中仅绘制出条件切换的控制方法的部分情况,并非全部的实现方式,具体步骤可以根据实际应用场景的变化而变化。
如图2所示,该条件切换的控制方法可以包括以下步骤:
步骤0:步骤0为可选步骤,条件切换触发。终端设备准备从SN0切换到SN1(SN1为本轮条件切换目标小区)。其中,条件切换可能是终端设备自主触发例如:网络设备配置的切换条件满足时触发,也可能是网络设备主动触发例如:网络设备通过信令指示终端设备切换到预配置的一个条件切换小区。
步骤1a:终端设备向MN发送消息,该消息包含发送给SN的重配完成消息。
步骤1b:MN向SN1转发重配完成消息。
上述的步骤1a和步骤1b均为可选步骤。在一种实现方式下,步骤1a和步骤1b均出现,该方式下,终端设备通过步骤1a和步骤1b向SN1发送重配完成消息。在另一种实现方式下,只执行步骤1b,该方式下,MN向SN1发送重配完成消息或者条件切换发生指示消息,该条件切换发生指示消息用于告知SN1为终端设备准备接入的条件切换目标小区。
此外,终端设备也可能直接向SN1发送重配完成消息。
步骤1c:步骤1c为可选步骤。终端设备通过步骤1c接入到SN1。本申请不限定步骤1a与步骤1c发生的逻辑先后顺序。
步骤1d:步骤1d为可选步骤,SN1通过步骤1d告知MN终端设备成功接入SN1。
步骤1e:步骤1e为可选步骤,MN通知SN0停止向终端设备发送数据。SN0为本轮条件切换前终端设备连接的SN。本申请不限定步骤1e与步骤1a~1d任一步骤发生的逻辑先后顺序。
步骤2a:步骤2a为可选步骤,在一种实现方式下,MN会执行步骤2a,让对应参与条件切换的SN例如SN0和/或SN2释放为终端设备预留的资源或者配置。例如,如果SN0不再作为终端设备的条件切换候选小区,MN可以请求SN0释放为该终端设备预留的资源。如果SN2不再作为终端设备的条件切换候选小区,MN可以请求SN2释放为该终端设备预留的资源。此外,如果SN2不再作为终端设备的条件切换候选小区,SN0或SN1也可以直接请求SN2释放为该终端设备预留的资源。本申请不限定步骤2a与步骤1a~1d任一步骤发生的逻辑先后顺序。
步骤2b:终端设备本轮条件切换的目标SN为SN1。SN0和SN2需要知道终端设备本轮条件切换的对象,通知的过程可以由MN执行。MN通知对应SN例如SN0和/或SN2,终端设备执行了条件切换。此外,通知的过程也可以由SN0或SN1执行,SN0或SN1通知对应SN例如SN2,终端设备执行了条件切换。本申请不限定步骤2b与步骤1a~1d任一步骤发生的逻辑先后顺序。步骤2a与步骤2b可能同时存在,此时,步骤2a作用的目标SN集合与步骤2b作用的目标SN集合不同。
步骤2b1和步骤2b2:步骤2b1和步骤2b2都是对步骤2b的响应,但可能不会同时执行步骤2b1和步骤2b2。在一种实现方式下,执行步骤2b1,收到通知的SN请求释放为终端设备预留的资源。这种方式下,步骤2b1用于回复MN或SN0或SN1对应SN希望释放为终端设备预留的资源或者配置,或者,用于通知MN或SN0或SN1对应SN已经释放为终端设备预留的资源或者配置。在另一种实现方式下,执行步骤2b2,用于向MN通知对应SN更新的条件切换相关的信息。
步骤3:步骤3为可选步骤。终端设备通过步骤3向网络设备发送条件切换辅助信息。接收条件切换辅助信息的网络设备为MN或者为终端设备当前连接的SN例如切换前连接的SN0或者切换后连接的SN1。本申请不限定步骤3与图2中其它步骤发生的逻辑先后顺序;
步骤4:步骤4为可选步骤。MN或SN0或SN2会将数据前转地址发送给终端设备条件切换后连接SN例如SN1。SN1会在适当时机触发与其它条件切换相关候选SN之间的数据前转任务。
图3是根据本申请一实施例的条件切换的控制方法300的示意性流程图。该方法可选地可以应用于图1所示的系统,但并不仅限于此。该方法包括以下内容的至少部分内容。
S310、第一网络设备发送第一消息,该第一消息用于条件切换控制。
其中,该第一网络设备为终端设备当前连接的主小区(PCell)、主节点(MN)或辅节点(SN)中的至少之一。
在本申请实施例中,条件切换可以包括以下场景的至少之一:
条件PCell改变(CHO);
条件PSCell添加(CPA);
条件PSCell修改(CPC)。
在连续条件切换场景中,第一网络设备可以在针对某个终端设备的某一轮条件切换之前、之中或之后发送该第一消息。该第一消息用于针对该终端设备的下一轮条件切换控制。
如图4所示,在一种实施方式中,该第一网络设备发送第一消息包括:
S410、该第一网络设备向第二网络设备和/或第三网络设备发送第一消息。
其中,该第二网络设备为该终端设备关联的条件切换候选小区,该第三网络设备为该终端设备发生条件切换前连接的PCell、MN或SN中的至少之一。
在本申请实施例中,第一网络设备向第二网络设备发送第一消息,以及第一网络设备向第三网络设备发送第一消息,这两个步骤可以并行,也可以具有先后顺序,其中,第二网络设备在接收第一消息之前就已经是为终端设备预留资源的条件切换候选小区,而第三网络设备存在如下不同场景:
在一种实现方式下,条件切换控制可以包括添加条件切换候选小区(也可以称为条件切换相关候选小区),具体可以包括请求一个小区作为终端设备的条件切换候选小区。例如:在收到添加请求之前,某个小区并未为终端设备预留资源。第三网络设备可以是终端设备切换前的源小区,与添加条件切换候选小区类似,第一网络设备向第三网络设备(源小区)发送第一消息,能够请求第三网络设备作为终端设备的条件切换候选小区。
在另一种实现方式下,与添加条件切换候选小区过程不同,上述第三网络设备在接收第一消息之前就已经是为终端设备预留资源的条件切换候选小区。第一网络设备向第三网络设备(源小区)发送第一消息,能够请求第三网络设备继续作为终端设备的条件切换候选小区。
参见图2的步骤2b,第一网络设备为第一消息的发起方,可以为终端设备连接的MN(也可能是终端设备连接的PCell或者SN)。第二网络设备和第三网络设备可以是第一消息的接收方。第二网络设备可以为其它条件切换候选小区比如SN2。第三网络设备可以为终端设备发生条件切换前连接的小区比如SN0。MN可以向SN2或SN0,发送第一消息。例如,MN或SN0或SN1通过第一消息可以通知SN2终端设备执行了条件切换。再如,MN也可以通过第一消息通知SN0终端设备执行了条件切换。
在一种实施方式中,该第一网络设备与该第二网络设备的关系包括以下至少之一:
该第一网络设备为该终端设备当前连接的PCell,该第二网络设备为该终端设备关联的条件切换相关的PCell;
该第一网络设备为该终端设备当前连接的MN,该第二网络设备为该终端设备关联的条件切换相关的MN;
该第一网络设备为该终端设备当前连接的MN或SN,该第二网络设备为该终端设备关联的条件切 换相关的SN。
在本申请实施例中,终端设备关联的条件切换候选小区的配置方式包括:网络设备通过重配过程为终端设备配置至少一个条件切换候选小区。针对CHO场景,终端设备关联的条件切换候选小区为至少一个条件切换相关的PCell。针对CPA或者CPC场景,终端设备关联的条件切换候选小区为至少一个条件切换相关的PSCell。
示例性地,本申请实施例涉及的应用场景包括如下至少一种:
场景一:在单连接场景(非DC场景),第一网络设备为终端设备当前连接的PCell(不限定条件切换发生前还是条件切换发生后),第二网络设备为终端设备关联的条件切换相关的PCell。
场景二:在DC场景,进一步针对CHO场景,第一网络设备为终端设备当前连接的MN(不限定条件切换发生前还是条件切换发生后),第二网络设备为终端设备关联的条件切换相关的MN。
场景三:在DC场景,进一步针对CPA或者CPC场景,第一网络设备为终端设备当前连接的MN或者SN(不限定条件切换发生前还是条件切换发生后),第二网络设备为终端设备关联的条件切换相关的SN。
在一种实施方式中,该第一网络设备与该第三网络设备的关系包括以下至少之一:
该第一网络设备为该终端设备当前连接的PCell,该第三网络设备为该终端设备发生条件切换前连接的PCell;
该第一网络设备为该终端设备当前连接的MN,该第三网络设备为该终端设备发生条件切换前连接的MN;
该第一网络设备为该终端设备当前连接的MN或SN,该第三网络设备为该终端设备发生条件切换前连接的SN。
示例性地,本申请实施例涉及的应用场景包括如下至少一种:
场景一:在单连接场景(非DC场景),第一网络设备为终端设备当前连接的PCell,第三网络设备为该终端设备发生条件切换前连接的PCell。
场景二:在DC场景,进一步针对CHO场景,第一网络设备为终端设备当前连接的MN,第三网络设备为该终端设备发生条件切换前连接的MN。
场景三:在DC场景,进一步针对CPA或者CPC场景,第一网络设备为终端设备当前连接的MN或者SN,第三网络设备为该终端设备发生条件切换前连接的SN。
在一种实施方式中,该第一消息包括以下至少之一:
信息1-1:该终端设备接入的条件切换候选小区对应的小区标识。
关于信息1-1的示例:如图2所示,终端设备当前连接的SN为SN0,下一轮条件切换的目标小区为SN1。信息1-1可以包括SN1对应小区关联的小区标识。其中,小区标识可以为如下形式中的任意一种或多种:条件切换候选小区关联的逻辑编号标识、CGI(Cell Global Identifier,小区全球标识)、小区对应的PCI(Physical Cell Identifier,物理小区标识)和频点组合信息,以及小区对应的服务小区标识例如服务小区索引(serving cell index)。
上述的条件切换候选小区关联的逻辑编号标识可以通过网络配置。例如:在条件切换机制下,网络设备会为终端设备配置至少一个条件切换候选小区关联的配置信息。为了便于对条件切换候选小区关联的配置信息进行相关操作,比如:条件切换候选小区关联的配置信息的添加、更新或删除等操作,在配置至少一个条件切换候选小区关联的配置信息时,网络设备会为每一个条件切换候选小区关联的配置信息分配一个逻辑编号标识。例如:网络设备为终端设备配置4个条件切换候选小区关联的配置信息,那么,这4个条件切换候选小区关联的配置信息被分配的逻辑编号标识可以分别为0、1、2及3。
信息1-2:第一指示信息,该第一指示信息用于指示该终端设备接入的条件切换候选小区不是该第二网络设备和/或该第三网络设备(即第一消息的接收方)对应的小区。
关于信息1-2的示例:如果第一网络设备向第二网络设备发送第一指示信息,则该第一指示信息用于指示终端设备接入的条件切换候选小区(即本轮切换的目标小区)不是该第二网络设备对应的小区。如果第一网络设备向第三网络设备发送第一指示信息,则该第一指示信息用于指示第三网络设备终端设备发生了条件切换。
如图2所示,终端设备当前连接的SN为SN0,下一轮条件切换的目标小区为SN1,那么,终端设备连接的MN(第一消息的发起方,也可能是终端设备连接的PCell或者SN)可以向其它条件切换候选小区比如SN2,发送第一消息。该第一消息可以包含第一指示信息,用于告知SN2该终端设备下一轮条件切换选择的小区不是SN2。那么SN2可以根据信息1-2等(第一消息包含的其它信息也可能被参考)信息,自行决定是否继续作为终端设备的条件切换候选小区。
信息1-3:第二指示信息,该第二指示信息用于请求该第二网络设备和/或该第三网络设备提供数据 前转(data forwarding)地址。
关于信息1-3的示例:如果第一网络设备向第二网络设备发送第二指示信息,则该第二指示信息用于请求该第二网络设备提供数据前转(data forwarding)地址。如果第一网络设备向第三网络设备发送第二指示信息,则该第二指示信息用于请求该第三网络设备提供数据前转地址。
如图2所示,终端设备当前连接的SN为SN0,数据前转的潜在对象为SN1和/或SN2。SN0在向SN1或者SN2发送前转数据之前需要获取SN1或者SN2的数据前转接收地址。一旦终端设备从SN0切换到SN1,数据前转的源SN会从SN0变为SN1。但SN1并不知道其余条件切换候选小区的数据前转地址(比如:SN2)。那么,终端设备连接的MN(第一消息的发起方,也可能是终端设备连接的PCell或者SN)可以向其它条件切换候选小区,比如SN2,发送第一消息。该第一消息可以包含第二指示信息,用于请求SN2提供新的数据前转地址。
信息1-4:第三指示信息,该第三指示信息用于请求该第二网络设备和/或该第三网络设备同意作为该终端设备的条件切换候选小区。
关于信息1-4的示例:如果第一网络设备向第二网络设备发送第三指示信息,则该第三指示信息用于请求该第二网络设备继续作为终端设备的条件切换候选小区。如果第一网络设备向第三网络设备发送第三指示信息,则该第三指示信息用于请求该第三网络设备继续作为终端设备的条件切换候选小区。
如图2所示,终端设备在发生条件切换前连接的是SN0,可能存在以下场景。场景1:条件切换前SN0已经属于终端设备配置的条件切换候选小区之一。场景2:条件切换前SN0不属于终端设备配置的条件切换候选小区之一。
终端设备当前连接的SN为SN0,下一轮条件切换的目标小区为SN1。由于SN2一直没有被选作目标切换小区,那么,终端设备连接的MN(第一消息的发起方,也可能是终端设备连接的PCell或者SN)可以向其它条件切换候选小区,比如SN2,发送第一消息。该第一消息包含第三指示信息,用于请求SN2继续作为终端设备的条件切换候选小区。当然SN2是否接收上述请求将由SN2做出判断。
信息1-5:该终端设备在条件切换前连接的小区中使用的小区配置信息,该切换前连接的小区为该终端设备在条件切换前连接的SN对应的小区、MN对应的小区或PCell中的至少之一。
关于信息1-5的示例:终端设备在条件切换前连接的SN对应的小区、MN对应的小区或PCell中使用的小区配置信息。
如图2所示,终端设备当前连接的SN为SN0,信息1-5可以包括终端设备在SN0使用的小区配置信息。终端设备连接的MN(第一消息的发起方,也可能是终端设备连接的PCell或者SN)可以向其它条件切换候选小区,比如SN2,发送第一消息。该第一消息包含信息1-5,则SN2收到信息1-5后可以决定是否改变为终端设备预留的资源或者改变为终端设备准备的小区配置信息。
例如,小区配置信息可以包括如下配置中的至少一项:
NAS(Non-access stratum,非接入层)层相关配置信息、SDAP(Service Data Adaptation Protocol,服务数据适配协议)层相关配置信息、RRC(Radio Resource Control,无线资源控制)层相关配置信息、PDCP(Packet Data Convergence Protocol,分组数据汇聚协议)层相关配置信息、BAP(Backhaul Adaptation Protocol,回传适配协议)层相关配置信息、RLC(Radio Link Control,无线链路控制)层相关配置信息、MAC(Media Access Control,媒体接入控制)层相关配置信息以及物理层相关配置信息。
信息1-6:该终端设备上报的小区测量结果。
信息1-7:该终端设备的位置信息。
信息1-8:该终端设备的历史服务小区信息。
关于信息1-6、信息1-7和信息1-8的示例:如图2所示,终端设备当前连接的SN为SN0,下一轮条件切换的目标小区为SN1。由于SN2一直没有被选作目标切换小区,那么,终端设备连接的MN(第一消息的发起方,也可能是终端设备连接的PCell或者SN)可以向其它条件切换候选小区,比如SN2,发送第一消息。该第一消息包含信息1-6、信息1-7或信息1-8中的至少一项,用于请求SN2继续作为终端设备的条件切换候选小区。当然SN2是否接收上述请求将由SN2做出判断。
上述第一消息可能显性包含上述信息1-1~信息1-8中的至少一项。此外,第一消息也可能隐式包含部分信息,比如:信息1-2~信息1-4。
在一种实施方式中,该第一消息用于以下至少之一:
请求该第二网络设备和/或该第三网络设备提供数据前转地址;
请求该第二网络设备和/或该第三网络设备同意作为该终端设备的条件切换候选小区;
向该第二网络设备和/或该第三网络设备指示终端设备发生了条件切换。
例如,在第一网络设备向第二网络设备和/或该第三网络设备发送的第一消息中,可以不包括第二指示信息。而是通过第一消息隐式请求接收设备提供数据前转地址。
再如,在第一网络设备向第二网络设备和/或该第三网络设备发送的第一消息中,可以不包括第三指示信息。而是通过第一消息隐式请求接收设备确定是否同意作为该终端设备的条件切换候选小区。
再如,在第一网络设备向第二网络设备和/或该第三网络设备发送的第一消息中,可以不包括第一指示信息。而是通过第一消息隐式指示接收设备发生了条件切换。
在一种实施方式中,该方法还包括:
S420、该第一网络设备接收该第二网络设备和/或该第三网络设备发送的第一消息响应消息。
在一种实施方式中,该第一消息响应消息用于通知该第一网络设备将该第二网络设备和/或该第三网络设备为终端设备预留的配置信息从终端设备配置的条件切换配置信息中移除,即:该第二网络设备和/或该第三网络设备不愿意继续作为终端设备关联的条件切换候选小区。
进一步地,如果第一消息响应消息用于通知该第一网络设备将该第二网络设备和/或该第三网络设备为终端设备预留的配置信息从终端设备配置的条件切换配置信息中移除,则该第二网络设备和/或该第三网络设备可以直接或间接(比如通过MN)向终端设备发送资源释放消息。该资源释放消息可以指示终端设备将自身存储的条件切换配置信息中的该第二网络设备和/或该第三网络设备的信息移除。
例如,参见图2,在步骤2b之后,可以执行步骤2b1或步骤2b2,收到第一消息的网络设备例如SN2可以向MN(第一消息的发起方,也可能是终端设备连接的PCell或者SN)返回第一消息响应消息。该第一消息响应消息用于响应消息发起方请求释放为终端设备预留的资源。MN收到第一消息响应消息后,可以将SN2为终端设备预留的配置信息从本地保存的终端设备配置的条件切换配置信息中移除。
在一种实施方式中,该第一消息响应消息用于通知该第一网络设备该第二网络设备和/或该第三网络设备同意作为终端设备的条件切换候选小区。
在一种实施方式中,在该第一消息响应消息用于通知该第一网络设备该第二网络设备和/或该第三网络设备同意作为终端设备的条件切换候选小区的情况下,该第一消息响应消息包括以下至少之一:
信息2-1:该第二网络设备和/或该第三网络设备分配的数据前转地址。
信息2-2:该第二网络设备和/或该第三网络设备对应的小区为终端设备配置或更新的小区配置信息。上述信息2-2的小区配置信息,可以参见上述信息1-5的相关描述,在此不再赘述。
信息2-3:该第二网络设备和/或该第三网络设备对应的小区同意作为终端设备的条件切换候选小区的有效时长信息。
关于信息2-3的示例:一种情况下,第一网络设备从第二网络设备收到第一消息响应消息,该第一消息响应消息中包括该第二网络设备对应小区继续作为终端设备的条件切换候选小区的有效时长信息。另一种情况下,第一网络设备从第三网络设备收到第一消息响应消息,该第一消息响应消息中包括该第三网络设备对应小区继续作为终端设备的条件切换候选小区的有效时长信息。
例如:条件切换候选小区的资源预留行为本身相当于是对网络资源的一种浪费。通过设定条件切换候选小区的有效时长信息可以在预留时长超时时释放对应预留的资源,提高通信系统资源预留效率。可选地,有效时长内终端设备连接的MN(第一消息的发起方,也可能是终端设备连接的PCell或者SN)可以再次向条件切换候选小区协商新的有效时长。协商同意后,新的有效时长会重新计算。
信息2-4:该第二网络设备和/或该第三网络设备为自身作为条件切换候选小区分配的小区标识。上述信息2-4的小区标识,可以参见上述信息1-1的相关描述,在此不再赘述。
如图5所示,在一种实施方式中,该方法还包括:
S510、该第一网络设备接收第四网络设备发送的第二消息,该第二消息用于通知该第一网络设备该终端设备成功接入或者切换到该第四网络设备。
其中,该第四网络设备为该终端设备发生条件切换后连接的PCell、MN或SN中的至少之一。
示例性地,上述第一网络设备可以为图2中终端设备连接的MN,上述第四网络设备可以为图2中终端设备本轮条件切换后连接的SN1(即本轮切换的目标小区)。参见步骤1d,SN1可以通过第二消息告知MN终端成功接入SN1。
在一种实施方式中,该方法还包括:
S520、该第一网络设备向第三网络设备发送第三消息,该第三消息用于通知该第三网络设备停止向该终端设备发送数据。
其中,该第三网络设备为该终端设备发生条件切换前连接的PCell、MN或SN中的至少之一。
示例性地,上述第一网络设备可以为图2中终端设备连接的MN,上述第三网络设备可以为图2中终端设备本轮条件切换前连接的SN0。参见步骤1e,MN可以通过第三消息通知SN0停止向终端设备发送数据。
在一种实施方式中,该方法还包括:
S530、该第一网络设备向第四网络设备发送第四消息,该第四消息用于条件切换控制。
其中,该第四网络设备为该终端设备发生条件切换后连接的PCell、MN或SN中的至少之一。
在本申请实施例中,第四网络设备可以为本轮条件切换的目标小区,例如图2中的SN1。参见步骤4,如果第一网络设备为MN,第四网络设备为SN1,则MN可以通过第四消息将数据前转地址发送给SN1。由SN1在适当时机触发与其它条件切换候选SN之间的数据前转任务。
在一种实施方式中,该第四消息包括:
该第二网络设备和/或该第三网络设备分配的数据前转地址;和/或,
该第二网络设备和/或该第三网络设备对应的小区作为终端设备的条件切换候选小区的有效时长信息。
上述第四消息包含的第二网络设备和/或该第三网络设备分配的数据前转地址可能有以下几种示例:
示例1:通过前述第一消息响应消息(参见信息2-1)获取,即:通过第一消息响应消息重新获取的数据前转地址。
示例2:复用之前分配的数据前转地址。示例性地,开始终端设备连接SN0。SN1和SN2将数据前转地址发送给MN。MN适时将SN1和SN2的数据前转地址发送给SN0。一轮条件切换后,终端设备从SN0切换到SN1。那么,MN可以将存储的SN2分配的数据前转地址转发给SN1,用于SN1向SN2进行数据前转。上述场景中,MN并没有向SN2重新申请新的数据前转地址,而是将发送给SN0的地址转发给SN1。
此外,第四网络设备拿到其他条件切换候选小区分配的数据前转地址后,可以在适当时候触发数据前转。这样一来,一旦终端设备下一轮条件切换触发,比如:终端设备从SN1切换到SN2,则SN2小区就可以在终端设备接入后及时为其发送用户数据,保证用户服务连续性。
在一种实施方式中,该方法还包括:
S540、该第一网络设备向该第四网络设备发送第五消息,该第五消息用于辅助该终端设备当前连接的PCell、MN或SN中的至少之一进行数据前转。
在一种实施方式中,该第五消息包括以下至少之一:
建议触发数据前转的小区标识;
建议触发数据前转的数据前转地址;
不建议触发数据前转的小区标识;
不建议触发数据前转的数据前转地址;
终端设备上报的小区测量结果;
终端设备的位置信息。
示例性地,上述第一网络设备可以为图2中终端设备连接的MN,上述第四网络设备可以为图2中终端设备本轮条件切换后连接的SN1。终端设备切换到SN1后,需要在适当时候向SN0或者SN2进行数据前转。但数据前转时机不好掌握。如果数据前转早了,终端设备迟迟没发生下一轮切换,之前前转的数据浪费了网络传输和存储资源。如果数据前转迟了,有可能出现终端设备切换到新的小区需要额外等待数据前转而造成用户体验差的问题。因而第一网络设备MN可以向第四网络设备SN1发送第五消息。通过第五信息可以辅助第四网络设备在适当时机触发数据前转。一方面保证用户体验,另一方面尽可能减少网络资源浪费。
在第五消息中小区标识的含义可以参见上述信息1-1的相关描述,在此不再赘述。
第五消息中的包括的信息可以基于终端设备上报的辅助信息来确定,也可以由发送第五消息的网络设备自主确定。
在本申请实施例中,不限制第一消息、第二消息、第三消息、第四消息和第五消息的发送时序,可以根据实际场景灵活设置。
如图6所示,在一种实施方式中,该方法还包括:
S610、该第一网络设备向该终端设备发送第四指示信息,该第四指示信息用于触发该终端设备上报辅助信息。
在一种实施方式中,该方法还包括:
S620、该第一网络设备向该终端设备发送事件配置信息,该事件配置信息用于配置与辅助信息上报相关的事件关联的配置。配置方式可以参见下述示例中的事件类型2或者事件类型3。
在一种实施方式中,该事件配置信息包括以下至少之一:
与该辅助信息上报相关的事件对应的事件类型标识;
与该辅助信息上报相关的事件对应的上报周期;
与该辅助信息上报相关的事件对应的上报次数;
与该辅助信息上报相关的事件对应的触发上报阈值。
在本申请实施例中,发送第四指示信息和发送事件配置信息可以只执行其中一个步骤,也可以两个步骤均执行,这两个步骤可以没有时序关系。
在本申请实施例中,辅助信息上报从终端设备的角度,可能包括以下类型的触发事件:
事件类型1:网络设备发送指示信息触发方式
终端设备接收到所述第一网络设备或者所述第四网络设备发送的指示信息时,触发上报所述辅助信息。
事件类型2:协议预定义事件触发方式
该方式下,触发终端设备上报所述辅助信息的事件不用通过网络设备告知终端设备,而是通过协议默认方式给定。但默认事件相关的配置既可能通过网络设备发送的专用信令配置给终端设备,也可能通过协议默认给出。
事件类型3:网络设备动态配置事件触发方式
该方式下,触发终端设备上报所述辅助信息的事件可能有多种。网络设备通过专用信令将触发事件相关的配置发送给终端设备。所述配置包括事件类型标识和/或与对应事件相关的参数。示例性地,与对应事件相关的参数可以包括上报周期、上报次数以及触发上报阈值中的至少一种。
例如,上述事件类型2或者事件类型3对应的事件可以为如下事件中的任意一种:
周期性上报定时器超时;
终端设备开始执行条件切换评估任务;
终端设备开始执行条件切换评估任务且终端设备连接的PCell的小区测量结果小于或者等于第五阈值;
终端设备开始条件切换评估任务且终端设备连接的PSCell的小区测量结果小于或者等于第六阈值;
终端设备停止执行条件切换评估任务。
在一种实施方式中,该方法还包括:
S630、该第一网络设备接收该终端设备上报的辅助信息,该辅助信息与条件切换候选小区相关。在本申请实施例中,可以先执行S610和/或S620再执行S630,也可以只执行S630终端设备可以自主决定上报辅助信息。
在一种实施方式中,该辅助信息包括以下至少之一:
辅助信息1:该终端设备推测下一次最有可能执行条件切换的小区对应的小区标识;
辅助信息2:该终端设备推测下一次有可能执行条件切换的小区对应的小区标识,且上报的小区标识最多不能超过M个;其中,M为正整数;
辅助信息3:该终端设备测得的条件切换候选小区中测量结果最好的N1个小区的小区标识;其中,N1为正整数;
辅助信息4:该终端设备测得的条件切换候选小区中测量结果最好的N1个小区的小区标识以及对应的小区的测量结果;
辅助信息5:该终端设备测得的条件切换候选小区中测量结果大于或等于第一阈值的小区对应的小区标识;
辅助信息6:该终端设备测得的条件切换候选小区中测量结果大于或等于第一阈值的小区对应的小区标识以及对应的小区的测量结果;
辅助信息7:该终端设备测得的条件切换候选小区中测量结果大于或等于第二阈值的小区对应的小区标识,且上报的小区标识最多不能超过N2个;其中,N2为正整数;
辅助信息8:该终端设备测得的条件切换候选小区中测量结果大于或等于第二阈值的小区对应的小区标识以及对应的小区的测量结果,且上报的小区个数最多不能超过N2个;
辅助信息9:该终端设备测得的条件切换候选小区中测量结果与对应条件切换事件触发阈值的比值大于或等于第三阈值的小区对应的小区标识;
辅助信息10:该终端设备测得的条件切换候选小区中测量结果与对应条件切换事件触发阈值的比值大于或等于第三阈值的小区对应的小区标识以及对应的小区的测量结果;
辅助信息11:该终端设备测得的条件切换候选小区中测量结果与对应条件切换事件触发阈值的比值大于或等于第四阈值的小区对应的小区标识,且上报的小区个数最多不能超过N3个;其中,N3为正整数;
辅助信息12:该终端设备测得的条件切换候选小区中测量结果与对应条件切换事件触发阈值的比值大于或等于第四阈值的小区对应的小区标识以及对应的小区的测量结果,且上报的小区个数最多不能超过N3个。
关于辅助信息9~辅助信息12:示例性地,假设终端设备当前测得的条件切换候选小区A的测量结果为W1,条件切换候选小区A关联的切换条件事件对应的触发阈值为W2,则如果W1和W2的比值大于或者等于对应阈值,则在上报事件触发时(见下文描述),认为该小区相关的辅助信息可以上报。
上述辅助信息中的小区标识的含义可以参见上述信息1-1描述,在此不再赘述。
上述测量结果可以包括小区级测量结果和/或波束级测量结果。其中,小区级测量结果或者波束级测量结果可以包括如下测量中的至少一种:RSRP(Reference Signal Received Power,参考信号接收功率)、RSRQ(Reference Signal Received Quality,参考信号接收质量)以及SINR(Signal to Interference plus Noise Ratio,信噪比)。
上述参数M、参数N1、参数第一阈值、参数第二阈值、参数N2、参数第三阈值、参数N3、参数第四阈值中的至少一种通过如下至少一种方式配置:协议默认配置方式、系统广播消息方式、终端设备专用信令方式。
本申请实施例的条件切换的控制方法,可以解决连续条件切换过程中不同候选小区之间的数据前转问题,保证终端设备在连续条件切换过程中的服务连续性。
图7是根据本申请一实施例的条件切换的控制方法700的示意性流程图。该方法可选地可以应用于图1所示的系统,但并不仅限于此。该方法包括以下内容的至少部分内容。
S710、第二网络设备接收第一网络设备发送的第一消息,该第一消息用于条件切换控制;
其中,该第一网络设备为终端设备当前连接的PCell、MN或SN中的至少之一;该第二网络设备为该终端设备关联的条件切换候选小区。
在一种实施方式中,该第一网络设备与该第二网络设备的关系包括以下至少之一:
该第一网络设备为该终端设备当前连接的PCell,该第二网络设备为该终端设备关联的条件切换相关的PCell;
该第一网络设备为该终端设备当前连接的MN,该第二网络设备为该终端设备关联的条件切换相关的MN;
该第一网络设备为该终端设备当前连接的MN或SN,该第二网络设备为该终端设备关联的条件切换相关的SN。
在一种实施方式中,该第一消息包括以下至少之一:
该终端设备接入的条件切换候选小区对应的小区标识;
第一指示信息,该第一指示信息用于指示该终端设备接入的条件切换候选小区不是该第二网络设备对应的小区;
第二指示信息,该第二指示信息用于请求该第二网络设备提供数据前转地址;
第三指示信息,该第三指示信息用于请求该第二网络设备同意继续作为该终端设备的条件切换候选小区;
该终端设备在条件切换前连接的小区中使用的小区配置信息,该切换前连接的小区为该终端设备在条件切换前连接的SN对应的小区、MN对应的小区或PCell中的至少之一;
该终端设备上报的小区测量结果;
该终端设备的位置信息;
该终端设备的历史服务小区信息。
在一种实施方式中,该第一消息用于以下至少之一:
请求该第二网络设备提供数据前转地址;
请求该第二网络设备同意继续作为该终端设备的条件切换候选小区;
向该第二网络设备指示终端设备发生了条件切换。
在一种实施方式中,该方法还包括:
S720、该第二网络设备向该第一网络设备发送接收第一消息响应消息;
其中,该第一消息响应消息用于通知该第一网络设备将该第二网络设备为终端设备预留的配置信息从该终端设备配置的条件切换配置信息中移除;或者,该第一消息响应消息用于通知第一网络设备该第二网络设备同意继续作为该终端设备的条件切换候选小区。
在一种实施方式中,在该第一消息响应消息用于通知该第一网络设备该第二网络设备同意继续作为该终端设备的条件切换候选小区的情况下,该第一消息响应消息包括以下至少之一:
该第二网络设备分配的数据前转地址;
该第二网络设备对应的小区为该终端设备配置或更新的小区配置信息;
该第二网络设备对应的小区同意继续作为该终端设备的条件切换候选小区的有效时长信息;
该第二网络设备为自身作为条件切换候选小区分配的小区标识。
本实施例的第二网络设备执行方法700的具体示例可以参见上述方法300的中关于第二网络设备的相关描述,为了简洁,在此不再赘述。
图8是根据本申请一实施例的条件切换的控制方法800的示意性流程图。该方法可选地可以应用于图1所示的系统,但并不仅限于此。该方法包括以下内容的至少部分内容。
S810、第三网络设备接收第一网络设备发送的第一消息,该第一消息用于条件切换控制;
其中,该第一网络设备为该终端设备当前连接的PCell、MN或SN中的至少之一;该第三网络设备为该终端设备发生条件切换前连接的PCell、MN或SN中的至少之一。
在一种实施方式中,该第一消息包括以下至少之一:
该终端设备接入的条件切换候选小区对应的小区标识;
第一指示信息,该第一指示信息用于指示该终端设备接入的条件切换候选小区不是该第三网络设备对应的小区;
第二指示信息,该第二指示信息用于请求该第三网络设备提供数据前转地址;
第三指示信息,该第三指示信息用于请求该第三网络设备同意作为该终端设备的条件切换候选小区;
该终端设备在条件切换前连接的小区中使用的小区配置信息,该切换前连接的小区为该终端设备在条件切换前连接的SN对应的小区、MN对应的小区或PCell中的至少之一;
该终端设备上报的小区测量结果;
该终端设备的位置信息;
该终端设备的历史服务小区信息。
在一种实施方式中,该第一消息用于以下至少之一:
请求该第三网络设备提供数据前转地址;
请求该第三网络设备同意作为该终端设备的条件切换候选小区;
向该第三网络设备指示终端设备发生了条件切换。
在一种实施方式中,该方法还包括:
S820、该第三网络设备向该第一网络设备发送接收第一消息响应消息;
其中,该第一消息响应消息用于通知该第一网络设备将该第三网络设备为终端设备预留的配置信息从该终端设备配置的条件切换配置信息中移除;或者,该第一消息响应消息用于通知该第一网络设备该第三网络设备同意作为该终端设备的条件切换候选小区。
在一种实施方式中,在该第一消息响应消息用于通知该第一网络设备该第三网络设备同意作为该终端设备的条件切换候选小区的情况下,该第一消息响应消息包括以下至少之一:
该第三网络设备分配的数据前转地址;
该第三网络设备对应的小区为该终端设备配置或更新的小区配置信息;
该第三网络设备对应的小区同意作为终端设备的条件切换候选小区的有效时长信息;
该第三网络设备为自身作为条件切换候选小区分配的小区标识。
如图9所示,在一种实施方式中,该方法还包括:
S910、第三网络设备接收第一网络设备发送的第三消息,该第三消息用于通知该第三网络设备停止向该终端设备发送数据。
本实施例的第三网络设备执行方法900的具体示例可以参见上述方法300的中关于第三网络设备的相关描述,为了简洁,在此不再赘述。
图10是根据本申请一实施例的条件切换的控制方法1000的示意性流程图。该方法可选地可以应用于图1所示的系统,但并不仅限于此。该方法包括以下内容的至少部分内容。
S1010、第四网络设备接收第一网络设备发送的第四消息,该第四消息用于条件切换控制;
其中,该第一网络设备为该终端设备当前连接的PCell、MN或SN中的至少之一;该第四网络设备为该终端设备发生条件切换后连接的PCell、MN或SN中的至少之一。
在一种实施方式中,该第四消息包括:
该第二网络设备和/或该第三网络设备分配的数据前转地址;和/或,
该第二网络设备和/或该第三网络设备对应的小区作为终端设备的条件切换候选小区的有效时长信息。
如图11所示,在一种实施方式中,该方法还包括:
S1110、该第四网络设备向该第一网络设备发送第二消息,该第二消息用于通知该第一网络设备该终端设备成功接入或者切换到该第四网络设备。
如图12所示,在一种实施方式中,该方法还包括:
S1210、该第四网络设备向该终端设备发送第四指示信息,该第四指示信息用于触发该终端设备上 该辅助信息。
在一种实施方式中,该方法还包括:
S1220、该第四网络设备向该终端设备发送事件配置信息,该事件配置信息用于配置与该辅助信息上报相关的事件关联的配置;
其中,该事件配置信息包括以下至少之一:
与该辅助信息上报相关的事件对应的事件类型标识;
与该辅助信息上报相关的事件对应的上报周期;
与该辅助信息上报相关的事件对应的上报次数;
与该辅助信息上报相关的事件对应的触发上报阈值。
在一种实施方式中,该方法还包括:
S1230、该第四网络设备接收该终端设备上报的辅助信息,该辅助信息与条件切换候选小区相关。
在一种实施方式中,该辅助信息包括以下至少之一:
该终端设备推测下一次最有可能执行条件切换的小区对应的小区标识;
该终端设备推测下一次有可能执行条件切换的小区对应的小区标识,且上报的小区标识最多不能超过M个;
该终端设备测得的条件切换候选小区中测量结果最好的N1个小区的小区标识;
该终端设备测得的条件切换候选小区中测量结果最好的N1个小区的小区标识以及对应的小区的测量结果;
该终端设备测得的条件切换候选小区中测量结果大于或等于第一阈值的小区对应的小区标识;
该终端设备测得的条件切换候选小区中测量结果大于或等于第一阈值的小区对应的小区标识以及对应的小区的测量结果;
该终端设备测得的条件切换候选小区中测量结果大于或等于第二阈值的小区对应的小区标识,且上报的小区标识最多不能超过N2个;
该终端设备测得的条件切换候选小区中测量结果大于或等于第二阈值的小区对应的小区标识以及对应的小区的测量结果,且上报的小区个数最多不能超过N2个;
该终端设备测得的条件切换候选小区中测量结果与对应条件切换事件触发阈值的比值大于或等于第三阈值的小区对应的小区标识;
该终端设备测得的条件切换候选小区中测量结果与对应条件切换事件触发阈值的比值大于或等于第三阈值的小区对应的小区标识以及对应的小区的测量结果;
该终端设备测得的条件切换候选小区中测量结果与对应条件切换事件触发阈值的比值大于或等于第四阈值的小区对应的小区标识,且上报的小区个数最多不能超过N3个;
该终端设备测得的条件切换候选小区中测量结果与对应条件切换事件触发阈值的比值大于或等于第四阈值的小区对应的小区标识以及对应的小区的测量结果,且上报的小区个数最多不能超过N3个。
在一种实施方式中,该方法还包括:
S1240、该第四网络设备接收该第一网络设备发送的第五消息,该第五消息用于辅助该终端设备当前连接的PCell、MN或SN中的至少之一进行数据前转。
在一种实施方式中,该第五消息包括以下至少之一:
建议触发数据前转的小区标识;
建议触发数据前转的数据前转地址;
不建议触发数据前转的小区标识;
不建议触发数据前转的数据前转地址;
该终端设备上报的小区测量结果;
该终端设备的位置信息。
本实施例的第四网络设备执行方法1000的具体示例可以参见上述方法300的中关于第四网络设备的相关描述,为了简洁,在此不再赘述。
图13是根据本申请一实施例的条件切换的控制方法1300的示意性流程图。该方法可选地可以应用于图1所示的系统,但并不仅限于此。该方法包括以下内容的至少部分内容。
S1310、终端设备向第一网络设备和/或第四网络设备上报辅助信息,该辅助信息与条件切换候选小区相关;
其中,该第一网络设备为该终端设备当前连接的PCell、MN或SN中的至少之一;该第四网络设备为该终端设备发生条件切换后连接的PCell、MN或SN中的至少之一。
在一种实施方式中,该辅助信息包括以下至少之一:
该终端设备推测下一次最有可能执行条件切换的小区对应的小区标识;
该终端设备推测下一次有可能执行条件切换的小区对应的小区标识,且上报的小区标识最多不能超过M个;
该终端设备测得的条件切换候选小区中测量结果最好的N1个小区的小区标识;
该终端设备测得的条件切换候选小区中测量结果最好的N1个小区的小区标识以及对应的小区的测量结果;
该终端设备测得的条件切换候选小区中测量结果大于或等于第一阈值的小区对应的小区标识;
该终端设备测得的条件切换候选小区中测量结果大于或等于第一阈值的小区对应的小区标识以及对应的小区的测量结果;
该终端设备测得的条件切换候选小区中测量结果大于或等于第二阈值的小区对应的小区标识,且上报的小区标识最多不能超过N2个;
该终端设备测得的条件切换候选小区中测量结果大于或等于第二阈值的小区对应的小区标识以及对应的小区的测量结果,且上报的小区个数最多不能超过N2个;
该终端设备测得的条件切换候选小区中测量结果与对应条件切换事件触发阈值的比值大于或等于第三阈值的小区对应的小区标识;
该终端设备测得的条件切换候选小区中测量结果与对应条件切换事件触发阈值的比值大于或等于第三阈值的小区对应的小区标识以及对应的小区的测量结果;
该终端设备测得的条件切换候选小区中测量结果与对应条件切换事件触发阈值的比值大于或等于第四阈值的小区对应的小区标识,且上报的小区个数最多不能超过N3个;
该终端设备测得的条件切换候选小区中测量结果与对应条件切换事件触发阈值的比值大于或等于第四阈值的小区对应的小区标识以及对应的小区的测量结果,且上报的小区个数最多不能超过N3个。
如图14所示,在一种实施方式中,该方法还包括:
S1410、该终端设备接收该第一网络设备和/或该第四网络设备发送的第四指示信息,该第四指示信息用于触发该终端设备上报该辅助信息。
在一种实施方式中,该终端设备的辅助信息上报是基于默认事件满足时触发的或者是基于该第一网络设备和/或该第四网络设备配置的事件满足时触发的。
在一种实施方式中,该方法还包括:
S1420、该终端设备接收该第一网络设备和/或该第四网络设备发送的事件配置信息,该事件配置信息用于配置与该辅助信息上报相关的事件关联的配置;
其中,该事件配置信息包括以下至少之一:
与该辅助信息上报相关的事件对应的事件类型标识;
与该辅助信息上报相关的事件对应的上报周期;
与该辅助信息上报相关的事件对应的上报次数;
与该辅助信息上报相关的事件对应的触发上报阈值。
本实施例的终端设备执行方法1300的具体示例可以参见上述方法300的中关于终端设备的相关描述,为了简洁,在此不再赘述。
图15是根据本申请一实施例的第一网络设备1500的示意性结构图。该设备可选地可以应用于图1所示的系统,但并不仅限于此。该设备包括以下内容的至少部分内容。
发送单元1510,用于发送第一消息,所述第一消息用于条件切换控制;
其中,所述第一网络设备为终端设备当前连接的主小区PCell、主节点MN或辅节点SN中的至少之一。
在一种实施方式中,所述发送单元1510,还用于向第二网络设备和/或第三网络设备发送第一消息;
其中,所述第二网络设备为所述终端设备关联的条件切换候选小区,所述第三网络设备为所述终端设备发生条件切换前连接的PCell、MN或SN中的至少之一。
在一种实施方式中,所述第一网络设备与所述第二网络设备的关系包括以下至少之一:
所述第一网络设备为所述终端设备当前连接的PCell,所述第二网络设备为所述终端设备关联的条件切换相关的PCell;
所述第一网络设备为所述终端设备当前连接的MN,所述第二网络设备为所述终端设备关联的条件切换相关的MN;
所述第一网络设备为所述终端设备当前连接的MN或SN,所述第二网络设备为所述终端设备关联的条件切换相关的SN。
在一种实施方式中,所述第一消息包括以下至少之一:
所述终端设备接入的条件切换候选小区对应的小区标识;
第一指示信息,所述第一指示信息用于指示所述终端设备接入的条件切换候选小区不是所述第二网络设备和/或所述第三网络设备对应的小区;
第二指示信息,所述第二指示信息用于请求所述第二网络设备和/或所述第三网络设备提供数据前转地址;
第三指示信息,所述第三指示信息用于请求所述第二网络设备和/或所述第三网络设备同意作为所述终端设备的条件切换候选小区;
所述终端设备在条件切换前连接的小区中使用的小区配置信息,所述切换前连接的小区为所述终端设备在条件切换前连接的SN对应的小区、MN对应的小区或PCell中的至少之一;
所述终端设备上报的小区测量结果;
所述终端设备的位置信息;
所述终端设备的历史服务小区信息。
在一种实施方式中,所述第一消息用于以下至少之一:
请求所述第二网络设备和/或所述第三网络设备提供数据前转地址;
请求所述第二网络设备和/或所述第三网络设备同意作为所述终端设备的条件切换候选小区;
向所述第二网络设备和/或所述第三网络设备指示终端设备发生了条件切换。
在一种实施方式中,如图16所示,该第一网络设备还包括:
第一接收单元1610,用于接收所述第二网络设备和/或所述第三网络设备发送的第一消息响应消息;
其中,所述第一消息响应消息用于通知所述第一网络设备将所述第二网络设备和/或所述第三网络设备为终端设备预留的配置信息从终端设备配置的条件切换配置信息中移除;或者,所述第一消息响应消息用于通知所述第一网络设备所述第二网络设备和/或所述第三网络设备同意作为终端设备的条件切换候选小区。
在一种实施方式中,在所述第一消息响应消息用于通知所述第一网络设备所述第二网络设备和/或所述第三网络设备同意作为终端设备的条件切换候选小区的情况下,所述第一消息响应消息包括以下至少之一:
所述第二网络设备和/或所述第三网络设备分配的数据前转地址;
所述第二网络设备和/或所述第三网络设备对应的小区为终端设备配置或更新的小区配置信息;
所述第二网络设备和/或所述第三网络设备对应的小区同意作为终端设备的条件切换候选小区的有效时长信息;
所述第二网络设备和/或所述第三网络设备为自身作为条件切换候选小区分配的小区标识。
在一种实施方式中,该第一网络设备还包括:
第二接收单元1620,用于接收第四网络设备发送的第二消息,所述第二消息用于通知所述第一网络设备所述终端设备成功接入或者切换到所述第四网络设备;
其中,所述第四网络设备为所述终端设备发生条件切换后连接的PCell、MN或SN中的至少之一。
在一种实施方式中,所述发送单元1510,还用于向第三网络设备发送第三消息,所述第三消息用于通知所述第三网络设备停止向所述终端设备发送数据;
其中,所述第三网络设备为所述终端设备发生条件切换前连接的PCell、MN或SN中的至少之一。
在一种实施方式中,所述发送单元1510,还用于向第四网络设备发送第四消息,所述第四消息用于条件切换控制;
其中,所述第四网络设备为所述终端设备发生条件切换后连接的PCell、MN或SN中的至少之一。
在一种实施方式中,所述第四消息包括:
所述第二网络设备和/或所述第三网络设备分配的数据前转地址;和/或,
所述第二网络设备和/或所述第三网络设备对应的小区作为终端设备的条件切换候选小区的有效时长信息。
在一种实施方式中,所述发送单元1510,还用于向所述第四网络设备发送第五消息,所述第五消息用于辅助所述终端设备当前连接的PCell、MN或SN中的至少之一进行数据前转。
在一种实施方式中,所述第五消息包括以下至少之一:
建议触发数据前转的小区标识;
建议触发数据前转的数据前转地址;
不建议触发数据前转的小区标识;
不建议触发数据前转的数据前转地址;
终端设备上报的小区测量结果;
终端设备的位置信息。
在一种实施方式中,该第一网络设备还包括:
第三接收单元1630,用于接收所述终端设备上报的辅助信息,所述辅助信息与条件切换候选小区相关。
在一种实施方式中,所述辅助信息包括以下至少之一:
所述终端设备推测下一次最有可能执行条件切换的小区对应的小区标识;
所述终端设备推测下一次有可能执行条件切换的小区对应的小区标识,且上报的小区标识最多不能超过M个;
所述终端设备测得的条件切换候选小区中测量结果最好的N1个小区的小区标识;
所述终端设备测得的条件切换候选小区中测量结果最好的N1个小区的小区标识以及对应的小区的测量结果;
所述终端设备测得的条件切换候选小区中测量结果大于或等于第一阈值的小区对应的小区标识;
所述终端设备测得的条件切换候选小区中测量结果大于或等于第一阈值的小区对应的小区标识以及对应的小区的测量结果;
所述终端设备测得的条件切换候选小区中测量结果大于或等于第二阈值的小区对应的小区标识,且上报的小区标识最多不能超过N2个;
所述终端设备测得的条件切换候选小区中测量结果大于或等于第二阈值的小区对应的小区标识以及对应的小区的测量结果,且上报的小区个数最多不能超过N2个;
所述终端设备测得的条件切换候选小区中测量结果与对应条件切换事件触发阈值的比值大于或等于第三阈值的小区对应的小区标识;
所述终端设备测得的条件切换候选小区中测量结果与对应条件切换事件触发阈值的比值大于或等于第三阈值的小区对应的小区标识以及对应的小区的测量结果;
所述终端设备测得的条件切换候选小区中测量结果与对应条件切换事件触发阈值的比值大于或等于第四阈值的小区对应的小区标识,且上报的小区个数最多不能超过N3个;
所述终端设备测得的条件切换候选小区中测量结果与对应条件切换事件触发阈值的比值大于或等于第四阈值的小区对应的小区标识以及对应的小区的测量结果,且上报的小区个数最多不能超过N3个。
在一种实施方式中,所述发送单元1510,还用于向所述终端设备发送第四指示信息,所述第四指示信息用于触发所述终端设备上报所述辅助信息。
在一种实施方式中,所述发送单元1510,还用于向所述终端设备发送事件配置信息,所述事件配置信息用于配置与所述辅助信息上报相关的事件关联的配置;
其中,所述事件配置信息包括以下至少之一:
与所述辅助信息上报相关的事件对应的事件类型标识;
与所述辅助信息上报相关的事件对应的上报周期;
与所述辅助信息上报相关的事件对应的上报次数;
与所述辅助信息上报相关的事件对应的触发上报阈值。
本申请实施例的第一网络设备1500能够实现前述的方法实施例中的第一网络设备的对应功能。该第一网络设备1500中的各个模块(子模块、单元或组件等)对应的流程、功能、实现方式以及有益效果,可参见上述方法实施例中的对应描述,在此不再赘述。需要说明,关于申请实施例的第一网络设备1500中的各个模块(子模块、单元或组件等)所描述的功能,可以由不同的模块(子模块、单元或组件等)实现,也可以由同一个模块(子模块、单元或组件等)实现。
图17是根据本申请一实施例的第二网络设备1700的结构示意图。该设备可选地可以应用于图1所示的系统,但并不仅限于此。该设备包括以下内容的至少部分内容。
接收单元1710,用于接收第一网络设备发送的第一消息,所述第一消息用于条件切换控制;
其中,所述第一网络设备为终端设备当前连接的PCell、MN或SN中的至少之一;所述第二网络设备为所述终端设备关联的条件切换候选小区。
在一种实施方式中,所述第一网络设备与所述第二网络设备的关系包括以下至少之一:
所述第一网络设备为所述终端设备当前连接的PCell,所述第二网络设备为所述终端设备关联的条件切换相关的PCell;
所述第一网络设备为所述终端设备当前连接的MN,所述第二网络设备为所述终端设备关联的条件切换相关的MN;
所述第一网络设备为所述终端设备当前连接的MN或SN,所述第二网络设备为所述终端设备关联的条件切换相关的SN。
在一种实施方式中,所述第一消息包括以下至少之一:
所述终端设备接入的条件切换候选小区对应的小区标识;
第一指示信息,所述第一指示信息用于指示所述终端设备接入的条件切换候选小区不是所述第二网络设备对应的小区;
第二指示信息,所述第二指示信息用于请求所述第二网络设备提供数据前转地址;
第三指示信息,所述第三指示信息用于请求所述第二网络设备同意继续作为所述终端设备的条件切换候选小区;
所述终端设备在条件切换前连接的小区中使用的小区配置信息,所述切换前连接的小区为所述终端设备在条件切换前连接的SN对应的小区、MN对应的小区或PCell中的至少之一;
所述终端设备上报的小区测量结果;
所述终端设备的位置信息;
所述终端设备的历史服务小区信息。
在一种实施方式中,所述第一消息用于以下至少之一:
请求所述第二网络设备提供数据前转地址;
请求所述第二网络设备同意继续作为所述终端设备的条件切换候选小区;
向所述第二网络设备指示终端设备发生了条件切换。
在一种实施方式中,如图18所示,该第二网络设备还包括:
发送单元1810,还用于向所述第一网络设备发送接收第一消息响应消息;
其中,所述第一消息响应消息用于通知所述第一网络设备将所述第二网络设备为终端设设备预留的配置信息从所述终端设备配置的条件切换配置信息中移除;或者,所述第一消息响应消息用于通知第一网络设备所述第二网络设备同意继续作为所述终端设备的条件切换候选小区。
在一种实施方式中,在所述第一消息响应消息用于通知所述第一网络设备所述第二网络设备同意继续作为所述终端设备的条件切换候选小区的情况下,所述第一消息响应消息包括以下至少之一:
所述第二网络设备分配的数据前转地址;
所述第二网络设备对应的小区为所述终端设备配置或更新的小区配置信息;
所述第二网络设备对应的小区同意继续作为所述终端设备的条件切换候选小区的有效时长信息;
所述第二网络设备为自身作为条件切换候选小区分配的小区标识。
本申请实施例的第二网络设备1700能够实现前述的方法实施例中的第二网络设备的对应功能。该第二网络设备1700中的各个模块(子模块、单元或组件等)对应的流程、功能、实现方式以及有益效果,可参见上述方法实施例中的对应描述,在此不再赘述。需要说明,关于申请实施例的第二网络设备1700中的各个模块(子模块、单元或组件等)所描述的功能,可以由不同的模块(子模块、单元或组件等)实现,也可以由同一个模块(子模块、单元或组件等)实现。
图19是根据本申请一实施例的第三网络设备1900的结构示意图。该设备可选地可以应用于图1所示的系统,但并不仅限于此。该设备包括以下内容的至少部分内容。
接收单元1910,用于接收第一网络设备发送的第一消息,所述第一消息用于条件切换控制;
其中,所述第一网络设备为所述终端设备当前连接的PCell、MN或SN中的至少之一;所述第三网络设备为所述终端设备发生条件切换前连接的PCell、MN或SN中的至少之一。
在一种实施方式中,所述第一消息包括以下至少之一:
所述终端设备接入的条件切换候选小区对应的小区标识;
第一指示信息,所述第一指示信息用于指示所述终端设备接入的条件切换候选小区不是所述第三网络设备对应的小区;
第二指示信息,所述第二指示信息用于请求所述第三网络设备提供数据前转地址;
第三指示信息,所述第三指示信息用于请求所述第三网络设备同意作为所述终端设备的条件切换候选小区;
所述终端设备在条件切换前连接的小区中使用的小区配置信息,所述切换前连接的小区为所述终端设备在条件切换前连接的SN对应的小区、MN对应的小区或PCell中的至少之一;
所述终端设备上报的小区测量结果;
所述终端设备的位置信息;
所述终端设备的历史服务小区信息。
在一种实施方式中,所述第一消息用于以下至少之一:
请求所述第三网络设备提供数据前转地址;
请求所述第三网络设备同意作为所述终端设备的条件切换候选小区;
向所述第三网络设备指示终端设备发生了条件切换。
在一种实施方式中,如图20所示该第三网络设备还包括:
发送单元2010,用于向所述第一网络设备发送接收第一消息响应消息;
其中,所述第一消息响应消息用于通知所述第一网络设备将所述第三网络设备为终端设备预留的配置信息从所述终端设备配置的条件切换配置信息中移除;或者,所述第一消息响应消息用于通知所述第一网络设备所述第三网络设备同意作为所述终端设备的条件切换候选小区。
在一种实施方式中,在所述第一消息响应消息用于通知所述第一网络设备所述第三网络设备同意作为所述终端设备的条件切换候选小区的情况下,所述第一消息响应消息包括以下至少之一:
所述第三网络设备分配的数据前转地址;
所述第三网络设备对应的小区为所述终端设备配置或更新的小区配置信息;
所述第三网络设备对应的小区同意作为终端设备的条件切换候选小区的有效时长信息;
所述第三网络设备为自身作为条件切换候选小区分配的小区标识。
在一种实施方式中,所述接收单元1910,还用于第三网络设备接收第一网络设备发送的第三消息,所述第三消息用于通知所述第三网络设备停止向所述终端设备发送数据。
本申请实施例的第三网络设备1900能够实现前述的方法实施例中的第三网络设备的对应功能。该第三网络设备1900中的各个模块(子模块、单元或组件等)对应的流程、功能、实现方式以及有益效果,可参见上述方法实施例中的对应描述,在此不再赘述。需要说明,关于申请实施例的第三网络设备1900中的各个模块(子模块、单元或组件等)所描述的功能,可以由不同的模块(子模块、单元或组件等)实现,也可以由同一个模块(子模块、单元或组件等)实现。
图21是根据本申请一实施例的第四网络设备2100的结构示意图。该设备可选地可以应用于图1所示的系统,但并不仅限于此。该设备包括以下内容的至少部分内容。
接收单元2110,用于接收第一网络设备发送的第四消息,所述第四消息用于条件切换控制;
其中,所述第一网络设备为所述终端设备当前连接的PCell、MN或SN中的至少之一;所述第四网络设备为所述终端设备发生条件切换后连接的PCell、MN或SN中的至少之一。
在一种实施方式中,所述第四消息包括:
所述第二网络设备和/或所述第三网络设备分配的数据前转地址;和/或,
所述第二网络设备和/或所述第三网络设备对应的小区作为终端设备的条件切换候选小区的有效时长信息。
在一种实施方式中,所述接收单元2110,还用于接收所述第一网络设备发送的第五消息,所述第五消息用于辅助所述终端设备当前连接的PCell、MN或SN中的至少之一进行数据前转。
在一种实施方式中,所述第五消息包括以下至少之一:
建议触发数据前转的小区标识;
建议触发数据前转的数据前转地址;
不建议触发数据前转的小区标识;
不建议触发数据前转的数据前转地址;
所述终端设备上报的小区测量结果;
所述终端设备的位置信息。
在一种实施方式中,如图22所示,该设备还包括:
第一发送单元2210,用于向所述第一网络设备发送第二消息,所述第二消息用于通知所述第一网络设备所述终端设备成功接入或者切换到所述第四网络设备。
在一种实施方式中,所述接收单元2110,还用于接收所述终端设备上报的辅助信息,所述辅助信息与条件切换候选小区相关。
在一种实施方式中,所述辅助信息包括以下至少之一:
所述终端设备推测下一次最有可能执行条件切换的小区对应的小区标识;
所述终端设备推测下一次有可能执行条件切换的小区对应的小区标识,且上报的小区标识最多不能超过M个;
所述终端设备测得的条件切换候选小区中测量结果最好的N1个小区的小区标识;
所述终端设备测得的条件切换候选小区中测量结果最好的N1个小区的小区标识以及对应的小区的测量结果;
所述终端设备测得的条件切换候选小区中测量结果大于或等于第一阈值的小区对应的小区标识;
所述终端设备测得的条件切换候选小区中测量结果大于或等于第一阈值的小区对应的小区标识以及对应的小区的测量结果;
所述终端设备测得的条件切换候选小区中测量结果大于或等于第二阈值的小区对应的小区标识,且上报的小区标识最多不能超过N2个;
所述终端设备测得的条件切换候选小区中测量结果大于或等于第二阈值的小区对应的小区标识以及对应的小区的测量结果,且上报的小区个数最多不能超过N2个;
所述终端设备测得的条件切换候选小区中测量结果与对应条件切换事件触发阈值的比值大于或等于第三阈值的小区对应的小区标识;
所述终端设备测得的条件切换候选小区中测量结果与对应条件切换事件触发阈值的比值大于或等于第三阈值的小区对应的小区标识以及对应的小区的测量结果;
所述终端设备测得的条件切换候选小区中测量结果与对应条件切换事件触发阈值的比值大于或等于第四阈值的小区对应的小区标识,且上报的小区个数最多不能超过N3个;
所述终端设备测得的条件切换候选小区中测量结果与对应条件切换事件触发阈值的比值大于或等于第四阈值的小区对应的小区标识以及对应的小区的测量结果,且上报的小区个数最多不能超过N3个。
在一种实施方式中,该设备还包括:
第二发送单元2220,用于向所述终端设备发送第四指示信息,所述第四指示信息用于触发所述终端设备上报所述辅助信息。
在一种实施方式中,所述第二发送单元2220,还用于向所述终端设备发送事件配置信息,所述事件配置信息用于配置与所述辅助信息上报相关的事件关联的配置;
其中,所述事件配置信息包括以下至少之一:
与所述辅助信息上报相关的事件对应的事件类型标识;
与所述辅助信息上报相关的事件对应的上报周期;
与所述辅助信息上报相关的事件对应的上报次数;
与所述辅助信息上报相关的事件对应的触发上报阈值。
本申请实施例的第四网络设备2100能够实现前述的方法实施例中的第四网络设备的对应功能。该第四网络设备2100中的各个模块(子模块、单元或组件等)对应的流程、功能、实现方式以及有益效果,可参见上述方法实施例中的对应描述,在此不再赘述。需要说明,关于申请实施例的第四网络设备2100中的各个模块(子模块、单元或组件等)所描述的功能,可以由不同的模块(子模块、单元或组件等)实现,也可以由同一个模块(子模块、单元或组件等)实现。
图23是根据本申请一实施例的终端设备2300的结构示意图。该设备可选地可以应用于图1所示的系统,但并不仅限于此。该设备包括以下内容的至少部分内容。
上报单元2310,用于向第一网络设备和/或第四网络设备上报辅助信息,所述辅助信息与条件切换候选小区相关;
其中,所述第一网络设备为所述终端设备当前连接的PCell、MN或SN中的至少之一;所述第四网络设备为所述终端设备发生条件切换后连接的PCell、MN或SN中的至少之一。
在一种实施方式中,所述辅助信息包括以下至少之一:
所述终端设备推测下一次最有可能执行条件切换的小区对应的小区标识;
所述终端设备推测下一次有可能执行条件切换的小区对应的小区标识,且上报的小区标识最多不能超过M个;
所述终端设备测得的条件切换候选小区中测量结果最好的N1个小区的小区标识;
所述终端设备测得的条件切换候选小区中测量结果最好的N1个小区的小区标识以及对应的小区的测量结果;
所述终端设备测得的条件切换候选小区中测量结果大于或等于第一阈值的小区对应的小区标识;
所述终端设备测得的条件切换候选小区中测量结果大于或等于第一阈值的小区对应的小区标识以及对应的小区的测量结果;
所述终端设备测得的条件切换候选小区中测量结果大于或等于第二阈值的小区对应的小区标识,且上报的小区标识最多不能超过N2个;
所述终端设备测得的条件切换候选小区中测量结果大于或等于第二阈值的小区对应的小区标识以及对应的小区的测量结果,且上报的小区个数最多不能超过N2个;
所述终端设备测得的条件切换候选小区中测量结果与对应条件切换事件触发阈值的比值大于或等于第三阈值的小区对应的小区标识;
所述终端设备测得的条件切换候选小区中测量结果与对应条件切换事件触发阈值的比值大于或等于第三阈值的小区对应的小区标识以及对应的小区的测量结果;
所述终端设备测得的条件切换候选小区中测量结果与对应条件切换事件触发阈值的比值大于或等 于第四阈值的小区对应的小区标识,且上报的小区个数最多不能超过N3个;
所述终端设备测得的条件切换候选小区中测量结果与对应条件切换事件触发阈值的比值大于或等于第四阈值的小区对应的小区标识以及对应的小区的测量结果,且上报的小区个数最多不能超过N3个。
在一种实施方式中,如图24所示,该设备还包括:
接收单元2410,用于接收所述第一网络设备和/或所述第四网络设备发送的第四指示信息,所述第四指示信息用于触发所述终端设备上报所述辅助信息。
在一种实施方式中,所述终端设备的辅助信息上报是基于默认事件满足时触发的或者是基于所述第一网络设备和/或所述第四网络设备配置的事件满足时触发的。
在一种实施方式中,所述接收单元2410,还用于接收所述第一网络设备和/或所述第四网络设备发送的事件配置信息,所述事件配置信息用于配置与所述辅助信息上报相关的事件关联的配置;
其中,所述事件配置信息包括以下至少之一:
与所述辅助信息上报相关的事件对应的事件类型标识;
与所述辅助信息上报相关的事件对应的上报周期;
与所述辅助信息上报相关的事件对应的上报次数;
与所述辅助信息上报相关的事件对应的触发上报阈值。
本申请实施例的终端设备2300能够实现前述的方法实施例中的终端设备的对应功能。该终端设备2300中的各个模块(子模块、单元或组件等)对应的流程、功能、实现方式以及有益效果,可参见上述方法实施例中的对应描述,在此不再赘述。需要说明,关于申请实施例的终端设备2300中的各个模块(子模块、单元或组件等)所描述的功能,可以由不同的模块(子模块、单元或组件等)实现,也可以由同一个模块(子模块、单元或组件等)实现。
图25是根据本申请实施例的通信设备2500示意性结构图。该通信设备2500包括处理器2510,处理器2510可以从存储器中调用并运行计算机程序,以使通信设备2500实现本申请实施例中的方法。
在一种实施方式中,通信设备2500还可以包括存储器2520。其中,处理器2510可以从存储器2520中调用并运行计算机程序,以使通信设备2500实现本申请实施例中的方法。
其中,存储器2520可以是独立于处理器2510的一个单独的器件,也可以集成在处理器2510中。
在一种实施方式中,通信设备2500还可以包括收发器2530,处理器2510可以控制该收发器2530与其他设备进行通信,具体地,可以向其他设备发送信息或数据,或接收其他设备发送的信息或数据。
其中,收发器2530可以包括发射机和接收机。收发器2530还可以进一步包括天线,天线的数量可以为一个或多个。
在一种实施方式中,该通信设备2500可为本申请实施例的网络设备,并且该通信设备2500可以实现本申请实施例的各个方法中由网络设备实现的相应流程,为了简洁,在此不再赘述。
在一种实施方式中,该通信设备2500可为本申请实施例的终端设备,并且该通信设备2500可以实现本申请实施例的各个方法中由终端设备实现的相应流程,为了简洁,在此不再赘述。
图26是根据本申请实施例的芯片2600的示意性结构图。该芯片2600包括处理器2610,处理器2610可以从存储器中调用并运行计算机程序,以实现本申请实施例中的方法。
在一种实施方式中,芯片2600还可以包括存储器2620。其中,处理器2610可以从存储器2620中调用并运行计算机程序,以实现本申请实施例中由终端设备或者网络设备执行的方法。
其中,存储器2620可以是独立于处理器2610的一个单独的器件,也可以集成在处理器2610中。
在一种实施方式中,该芯片2600还可以包括输入接口2630。其中,处理器2610可以控制该输入接口2630与其他设备或芯片进行通信,具体地,可以获取其他设备或芯片发送的信息或数据。
在一种实施方式中,该芯片2600还可以包括输出接口2640。其中,处理器2610可以控制该输出接口2640与其他设备或芯片进行通信,具体地,可以向其他设备或芯片输出信息或数据。
在一种实施方式中,该芯片可应用于本申请实施例中的网络设备,并且该芯片可以实现本申请实施例的各个方法中由网络设备实现的相应流程,为了简洁,在此不再赘述。
在一种实施方式中,该芯片可应用于本申请实施例中的终端设备,并且该芯片可以实现本申请实施例的各个方法中由终端设备实现的相应流程,为了简洁,在此不再赘述。
应用于网络设备和终端设备的芯片可以是相同的芯片或不同的芯片。
应理解,本申请实施例提到的芯片还可以称为系统级芯片,系统芯片,芯片系统或片上系统芯片等。
上述提及的处理器可以是通用处理器、数字信号处理器(digital signal processor,DSP)、现成可编程门阵列(field programmable gate array,FPGA)、专用集成电路(application specific integrated circuit,ASIC)或者其他可编程逻辑器件、晶体管逻辑器件、分立硬件组件等。其中,上述提到的通用处理器可以是微处理器或者也可以是任何常规的处理器等。
上述提及的存储器可以是易失性存储器或非易失性存储器,或可包括易失性和非易失性存储器两者。其中,非易失性存储器可以是只读存储器(read-only memory,ROM)、可编程只读存储器(programmable ROM,PROM)、可擦除可编程只读存储器(erasable PROM,EPROM)、电可擦除可编程只读存储器(electrically EPROM,EEPROM)或闪存。易失性存储器可以是随机存取存储器(random access memory,RAM)。
应理解,上述存储器为示例性但不是限制性说明,例如,本申请实施例中的存储器还可以是静态随机存取存储器(static RAM,SRAM)、动态随机存取存储器(dynamic RAM,DRAM)、同步动态随机存取存储器(synchronous DRAM,SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM,DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM,ESDRAM)、同步连接动态随机存取存储器(synch link DRAM,SLDRAM)以及直接内存总线随机存取存储器(Direct Rambus RAM,DR RAM)等等。也就是说,本申请实施例中的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
图27是根据本申请实施例的通信系统2700的示意性框图。该通信系统2700包括第一网络设备2710和第二网络设备2720。
第一网络设备2710,用于执行上述实施例中第一网络设备执行的条件切换的控制方法;
第二网络设备2720,用于执行上述实施例中第二网络设备执行的条件切换的控制方法。
在一种实施方式中,该通信系统还包括:
第三网络设备2730,用于上述实施例中第三网络设备执行的条件切换的控制方法。
在一种实施方式中,该通信系统还包括:
第四网络设备2740,用于上述实施例中第四网络设备执行的条件切换的控制方法。
在一种实施方式中,该通信系统还包括:
终端设备2750,用于上述实施例中终端设备执行的条件切换的控制方法。
在上述实施例中,可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时,可以全部或部分地以计算机程序产品的形式实现。该计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行该计算机程序指令时,全部或部分地产生按照本申请实施例中的流程或功能。该计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。该计算机指令可以存储在计算机可读存储介质中,或者从一个计算机可读存储介质向另一个计算机可读存储介质传输,例如,该计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(Digital Subscriber Line,DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。该计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。该可用介质可以是磁性介质,(例如,软盘、硬盘、磁带)、光介质(例如,DVD)、或者半导体介质(例如固态硬盘(Solid State Disk,SSD))等。
应理解,在本申请的各种实施例中,上述各过程的序号的大小并不意味着执行顺序的先后,各过程的执行顺序应以其功能和内在逻辑确定,而不应对本申请实施例的实施过程构成任何限定。
所属领域的技术人员可以清楚地了解到,为描述的方便和简洁,上述描述的系统、装置和单元的具体工作过程,可以参考前述方法实施例中的对应过程,在此不再赘述。
以上所述仅为本申请的具体实施方式,但本申请的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本申请揭露的技术范围内,可轻易想到变化或替换,都应涵盖在本申请的保护范围之内。因此,本申请的保护范围应以该权利要求的保护范围为准。

Claims (92)

  1. 一种条件切换的控制方法,包括:
    第一网络设备发送第一消息,所述第一消息用于条件切换控制;
    其中,所述第一网络设备为终端设备当前连接的主小区PCell、主节点MN或辅节点SN中的至少之一。
  2. 根据权利要求1所述的方法,所述第一网络设备发送第一消息包括:
    所述第一网络设备向第二网络设备和/或第三网络设备发送第一消息;
    其中,所述第二网络设备为所述终端设备关联的条件切换候选小区,所述第三网络设备为所述终端设备发生条件切换前连接的PCell、MN或SN中的至少之一。
  3. 根据权利要求1或2所述的方法,所述第一网络设备与所述第二网络设备的关系包括以下至少之一:
    所述第一网络设备为所述终端设备当前连接的PCell,所述第二网络设备为所述终端设备关联的条件切换相关的PCell;
    所述第一网络设备为所述终端设备当前连接的MN,所述第二网络设备为所述终端设备关联的条件切换相关的MN;
    所述第一网络设备为所述终端设备当前连接的MN或SN,所述第二网络设备为所述终端设备关联的条件切换相关的SN。
  4. 根据权利要求1-3中任一项所述的方法,其中,所述第一消息包括以下至少之一:
    所述终端设备接入的条件切换候选小区对应的小区标识;
    第一指示信息,所述第一指示信息用于指示所述终端设备接入的条件切换候选小区不是所述第二网络设备和/或所述第三网络设备对应的小区;
    第二指示信息,所述第二指示信息用于请求所述第二网络设备和/或所述第三网络设备提供数据前转地址;
    第三指示信息,所述第三指示信息用于请求所述第二网络设备和/或所述第三网络设备同意作为所述终端设备的条件切换候选小区;
    所述终端设备在条件切换前连接的小区中使用的小区配置信息,所述切换前连接的小区为所述终端设备在条件切换前连接的SN对应的小区、MN对应的小区或PCell中的至少之一;
    所述终端设备上报的小区测量结果;
    所述终端设备的位置信息;
    所述终端设备的历史服务小区信息。
  5. 根据权利要求1-4中任一项所述的方法,其中,所述第一消息用于以下至少之一:
    请求所述第二网络设备和/或所述第三网络设备提供数据前转地址;
    请求所述第二网络设备和/或所述第三网络设备同意作为所述终端设备的条件切换候选小区;
    向所述第二网络设备和/或所述第三网络设备指示所述终端设备发生了条件切换。
  6. 根据权利要求1-5中任一项所述的方法,还包括:
    所述第一网络设备接收所述第二网络设备和/或所述第三网络设备发送的第一消息响应消息;
    其中,所述第一消息响应消息用于通知所述第一网络设备将所述第二网络设备和/或所述第三网络设备为所述终端设备预留的配置信息从终端设备配置的条件切换配置信息中移除;或者,所述第一消息响应消息用于通知所述第一网络设备所述第二网络设备和/或所述第三网络设备同意作为终端设备的条件切换候选小区。
  7. 根据权利要求6所述的方法,其中,在所述第一消息响应消息用于通知所述第一网络设备所述第二网络设备和/或所述第三网络设备同意作为终端设备的条件切换候选小区的情况下,所述第一消息响应消息包括以下至少之一:
    所述第二网络设备和/或所述第三网络设备分配的数据前转地址;
    所述第二网络设备和/或所述第三网络设备对应的小区为终端设备配置或更新的小区配置信息;
    所述第二网络设备和/或所述第三网络设备对应的小区同意作为终端设备的条件切换候选小区的有效时长信息;
    所述第二网络设备和/或所述第三网络设备为自身作为条件切换候选小区分配的小区标识。
  8. 根据权利要求1-7中任一项所述的方法,还包括:
    所述第一网络设备接收第四网络设备发送的第二消息,所述第二消息用于通知所述第一网络设备所述终端设备成功接入或者切换到所述第四网络设备;
    其中,所述第四网络设备为所述终端设备发生条件切换后连接的PCell、MN或SN中的至少之一。
  9. 根据权利要求1-8中任一项所述的方法,还包括:
    所述第一网络设备向第三网络设备发送第三消息,所述第三消息用于通知所述第三网络设备停止向所述终端设备发送数据;
    其中,所述第三网络设备为所述终端设备发生条件切换前连接的PCell、MN或SN中的至少之一。
  10. 根据权利要求1-9中任一项所述的方法,还包括:
    所述第一网络设备向第四网络设备发送第四消息,所述第四消息用于条件切换控制;
    其中,所述第四网络设备为所述终端设备发生条件切换后连接的PCell、MN或SN中的至少之一。
  11. 根据权利要求10所述的方法,其中,所述第四消息包括:
    第二网络设备和/或第三网络设备分配的数据前转地址;和/或,
    所述第二网络设备和/或所述第三网络设备对应的小区作为终端设备的条件切换候选小区的有效时长信息。
  12. 根据权利要求1-11中任一项所述的方法,还包括:
    所述第一网络设备向所述第四网络设备发送第五消息,所述第五消息用于辅助所述终端设备当前连接的PCell、MN或SN中的至少之一进行数据前转。
  13. 根据权利要求12所述的方法,其中,所述第五消息包括以下至少之一:
    建议触发数据前转的小区标识;
    建议触发数据前转的数据前转地址;
    不建议触发数据前转的小区标识;
    不建议触发数据前转的数据前转地址;
    终端设备上报的小区测量结果;
    终端设备的位置信息。
  14. 根据权利要求1-13中任一项所述的方法,还包括:
    所述第一网络设备接收所述终端设备上报的辅助信息,所述辅助信息与条件切换候选小区相关。
  15. 根据权利要求14所述的方法,所述辅助信息包括以下至少之一:
    所述终端设备推测下一次最有可能执行条件切换的小区对应的小区标识;
    所述终端设备推测下一次有可能执行条件切换的小区对应的小区标识,且上报的小区标识最多不能超过M个;
    所述终端设备测得的条件切换候选小区中测量结果最好的N1个小区的小区标识;
    所述终端设备测得的条件切换候选小区中测量结果最好的N1个小区的小区标识以及对应的小区的测量结果;
    所述终端设备测得的条件切换候选小区中测量结果大于或等于第一阈值的小区对应的小区标识;
    所述终端设备测得的条件切换候选小区中测量结果大于或等于第一阈值的小区对应的小区标识以及对应的小区的测量结果;
    所述终端设备测得的条件切换候选小区中测量结果大于或等于第二阈值的小区对应的小区标识,且上报的小区标识最多不能超过N2个;
    所述终端设备测得的条件切换候选小区中测量结果大于或等于第二阈值的小区对应的小区标识以及对应的小区的测量结果,且上报的小区个数最多不能超过N2个;
    所述终端设备测得的条件切换候选小区中测量结果与对应条件切换事件触发阈值的比值大于或等于第三阈值的小区对应的小区标识;
    所述终端设备测得的条件切换候选小区中测量结果与对应条件切换事件触发阈值的比值大于或等于第三阈值的小区对应的小区标识以及对应的小区的测量结果;
    所述终端设备测得的条件切换候选小区中测量结果与对应条件切换事件触发阈值的比值大于或等于第四阈值的小区对应的小区标识,且上报的小区个数最多不能超过N3个;
    所述终端设备测得的条件切换候选小区中测量结果与对应条件切换事件触发阈值的比值大于或等于第四阈值的小区对应的小区标识以及对应的小区的测量结果,且上报的小区个数最多不能超过N3个。
  16. 根据权利要求14或15所述的方法,还包括:
    所述第一网络设备向所述终端设备发送第四指示信息,所述第四指示信息用于触发所述终端设备上报所述辅助信息。
  17. 根据权利要求14或15所述的方法,还包括:
    所述第一网络设备向所述终端设备发送事件配置信息,所述事件配置信息用于配置与所述辅助信息上报相关的事件关联的配置;
    其中,所述事件配置信息包括以下至少之一:
    与所述辅助信息上报相关的事件对应的事件类型标识;
    与所述辅助信息上报相关的事件对应的上报周期;
    与所述辅助信息上报相关的事件对应的上报次数;
    与所述辅助信息上报相关的事件对应的触发上报阈值。
  18. 一种条件切换的控制方法,包括:
    第二网络设备接收第一网络设备发送的第一消息,所述第一消息用于条件切换控制;
    其中,所述第一网络设备为终端设备当前连接的PCell、MN或SN中的至少之一;所述第二网络设备为所述终端设备关联的条件切换候选小区。
  19. 根据权利要求18所述的方法,所述第一网络设备与所述第二网络设备的关系包括以下至少之一:
    所述第一网络设备为所述终端设备当前连接的PCell,所述第二网络设备为所述终端设备关联的条件切换相关的PCell;
    所述第一网络设备为所述终端设备当前连接的MN,所述第二网络设备为所述终端设备关联的条件切换相关的MN;
    所述第一网络设备为所述终端设备当前连接的MN或SN,所述第二网络设备为所述终端设备关联的条件切换相关的SN。
  20. 根据权利要求18或19所述的方法,其中,所述第一消息包括以下至少之一:
    所述终端设备接入的条件切换候选小区对应的小区标识;
    第一指示信息,所述第一指示信息用于指示所述终端设备接入的条件切换候选小区不是所述第二网络设备对应的小区;
    第二指示信息,所述第二指示信息用于请求所述第二网络设备提供数据前转地址;
    第三指示信息,所述第三指示信息用于请求所述第二网络设备同意继续作为所述终端设备的条件切换候选小区;
    所述终端设备在条件切换前连接的小区中使用的小区配置信息,所述切换前连接的小区为所述终端设备在条件切换前连接的SN对应的小区、MN对应的小区或PCell中的至少之一;
    所述终端设备上报的小区测量结果;
    所述终端设备的位置信息;
    所述终端设备的历史服务小区信息。
  21. 根据权利要求18-20中任一项所述的方法,其中,所述第一消息用于以下至少之一:
    请求所述第二网络设备提供数据前转地址;
    请求所述第二网络设备同意继续作为所述终端设备的条件切换候选小区;
    向所述第二网络设备指示所述终端设备发生了条件切换。
  22. 根据权利要求18-21中任一项所述的方法,还包括:
    所述第二网络设备向所述第一网络设备发送第一消息响应消息;
    其中,所述第一消息响应消息用于通知所述第一网络设备将所述第二网络设备为所述终端设备预留的配置信息从所述终端设备配置的条件切换配置信息中移除;或者,所述第一消息响应消息用于通知第一网络设备所述第二网络设备同意继续作为所述终端设备的条件切换候选小区。
  23. 根据权利要求22所述的方法,其中,在所述第一消息响应消息用于通知所述第一网络设备所述第二网络设备同意继续作为所述终端设备的条件切换候选小区的情况下,所述第一消息响应消息包括以下至少之一:
    所述第二网络设备分配的数据前转地址;
    所述第二网络设备对应的小区为所述终端设备配置或更新的小区配置信息;
    所述第二网络设备对应的小区同意继续作为所述终端设备的条件切换候选小区的有效时长信息;
    所述第二网络设备为自身作为条件切换候选小区分配的小区标识。
  24. 一种条件切换的控制方法,包括:
    第三网络设备接收第一网络设备发送的第一消息,所述第一消息用于条件切换控制;
    其中,所述第一网络设备为终端设备当前连接的PCell、MN或SN中的至少之一;所述第三网络设备为所述终端设备发生条件切换前连接的PCell、MN或SN中的至少之一。
  25. 根据权利要求24所述的方法,其中,所述第一消息包括以下至少之一:
    所述终端设备接入的条件切换候选小区对应的小区标识;
    第一指示信息,所述第一指示信息用于指示所述终端设备接入的条件切换候选小区不是所述第三网络设备对应的小区;
    第二指示信息,所述第二指示信息用于请求所述第三网络设备提供数据前转地址;
    第三指示信息,所述第三指示信息用于请求所述第三网络设备同意作为所述终端设备的条件切换候选小区;
    所述终端设备在条件切换前连接的小区中使用的小区配置信息,所述切换前连接的小区为所述终端设备在条件切换前连接的SN对应的小区、MN对应的小区或PCell中的至少之一;
    所述终端设备上报的小区测量结果;
    所述终端设备的位置信息;
    所述终端设备的历史服务小区信息。
  26. 根据权利要求24或25所述的方法,其中,所述第一消息用于以下至少之一:
    请求所述第三网络设备提供数据前转地址;
    请求所述第三网络设备同意作为所述终端设备的条件切换候选小区;
    向所述第三网络设备指示所述终端设备发生了条件切换。
  27. 根据权利要求24-26中任一项所述的方法,还包括:
    所述第三网络设备向所述第一网络设备发送第一消息响应消息;
    其中,所述第一消息响应消息用于通知所述第一网络设备将所述第三网络设备为所述终端设备预留的配置信息从所述终端设备配置的条件切换配置信息中移除;或者,所述第一消息响应消息用于通知所述第一网络设备所述第三网络设备同意作为所述终端设备的条件切换候选小区。
  28. 根据权利要求27所述的方法,其中,在所述第一消息响应消息用于通知所述第一网络设备所述第三网络设备同意作为所述终端设备的条件切换候选小区的情况下,所述第一消息响应消息包括以下至少之一:
    所述第三网络设备分配的数据前转地址;
    所述第三网络设备对应的小区为所述终端设备配置或更新的小区配置信息;
    所述第三网络设备对应的小区同意作为终端设备的条件切换候选小区的有效时长信息;
    所述第三网络设备为自身作为条件切换候选小区分配的小区标识。
  29. 根据权利要求24-28中任一项所述的方法,还包括:
    第三网络设备接收第一网络设备发送的第三消息,所述第三消息用于通知所述第三网络设备停止向所述终端设备发送数据。
  30. 一种条件切换的控制方法,包括:
    第四网络设备接收第一网络设备发送的第四消息,所述第四消息用于条件切换控制;
    其中,所述第一网络设备为终端设备当前连接的PCell、MN或SN中的至少之一;所述第四网络设备为所述终端设备发生条件切换后连接的PCell、MN或SN中的至少之一。
  31. 根据权利要求30所述的方法,其中,所述第四消息包括:
    第二网络设备和/或第三网络设备分配的数据前转地址;和/或,
    所述第二网络设备和/或所述第三网络设备对应的小区作为终端设备的条件切换候选小区的有效时长信息。
  32. 根据权利要求30或31所述的方法,还包括:
    所述第四网络设备接收所述第一网络设备发送的第五消息,所述第五消息用于辅助所述终端设备当前连接的PCell、MN或SN中的至少之一进行数据前转。
  33. 根据权利要求32所述的方法,其中,所述第五消息包括以下至少之一:
    建议触发数据前转的小区标识;
    建议触发数据前转的数据前转地址;
    不建议触发数据前转的小区标识;
    不建议触发数据前转的数据前转地址;
    所述终端设备上报的小区测量结果;
    所述终端设备的位置信息。
  34. 根据权利要求33所述的方法,还包括:
    所述第四网络设备向所述第一网络设备发送第二消息,所述第二消息用于通知所述第一网络设备所述终端设备成功接入或者切换到所述第四网络设备。
  35. 根据权利要求30-34中任一项所述的方法,还包括:
    所述第四网络设备接收所述终端设备上报的辅助信息,所述辅助信息与条件切换候选小区相关。
  36. 根据权利要求35所述的方法,所述辅助信息包括以下至少之一:
    所述终端设备推测下一次最有可能执行条件切换的小区对应的小区标识;
    所述终端设备推测下一次有可能执行条件切换的小区对应的小区标识,且上报的小区标识最多不能超过M个;
    所述终端设备测得的条件切换候选小区中测量结果最好的N1个小区的小区标识;
    所述终端设备测得的条件切换候选小区中测量结果最好的N1个小区的小区标识以及对应的小区的测量结果;
    所述终端设备测得的条件切换候选小区中测量结果大于或等于第一阈值的小区对应的小区标识;
    所述终端设备测得的条件切换候选小区中测量结果大于或等于第一阈值的小区对应的小区标识以及对应的小区的测量结果;
    所述终端设备测得的条件切换候选小区中测量结果大于或等于第二阈值的小区对应的小区标识,且上报的小区标识最多不能超过N2个;
    所述终端设备测得的条件切换候选小区中测量结果大于或等于第二阈值的小区对应的小区标识以及对应的小区的测量结果,且上报的小区个数最多不能超过N2个;
    所述终端设备测得的条件切换候选小区中测量结果与对应条件切换事件触发阈值的比值大于或等于第三阈值的小区对应的小区标识;
    所述终端设备测得的条件切换候选小区中测量结果与对应条件切换事件触发阈值的比值大于或等于第三阈值的小区对应的小区标识以及对应的小区的测量结果;
    所述终端设备测得的条件切换候选小区中测量结果与对应条件切换事件触发阈值的比值大于或等于第四阈值的小区对应的小区标识,且上报的小区个数最多不能超过N3个;
    所述终端设备测得的条件切换候选小区中测量结果与对应条件切换事件触发阈值的比值大于或等于第四阈值的小区对应的小区标识以及对应的小区的测量结果,且上报的小区个数最多不能超过N3个。
  37. 根据权利要求35或36所述的方法,还包括:
    所述第四网络设备向所述终端设备发送第四指示信息,所述第四指示信息用于触发所述终端设备上报所述辅助信息。
  38. 根据权利要求35或36所述的方法,还包括:
    所述第四网络设备向所述终端设备发送事件配置信息,所述事件配置信息用于配置与所述辅助信息上报相关的事件关联的配置;
    其中,所述事件配置信息包括以下至少之一:
    与所述辅助信息上报相关的事件对应的事件类型标识;
    与所述辅助信息上报相关的事件对应的上报周期;
    与所述辅助信息上报相关的事件对应的上报次数;
    与所述辅助信息上报相关的事件对应的触发上报阈值。
  39. 一种条件切换的控制方法,包括:
    终端设备向第一网络设备和/或第四网络设备上报辅助信息,所述辅助信息与条件切换候选小区相关;
    其中,所述第一网络设备为所述终端设备当前连接的PCell、MN或SN中的至少之一;所述第四网络设备为所述终端设备发生条件切换后连接的PCell、MN或SN中的至少之一。
  40. 根据权利要求39所述的方法,所述辅助信息包括以下至少之一:
    所述终端设备推测下一次最有可能执行条件切换的小区对应的小区标识;
    所述终端设备推测下一次有可能执行条件切换的小区对应的小区标识,且上报的小区标识最多不能超过M个;
    所述终端设备测得的条件切换候选小区中测量结果最好的N1个小区的小区标识;
    所述终端设备测得的条件切换候选小区中测量结果最好的N1个小区的小区标识以及对应的小区的测量结果;
    所述终端设备测得的条件切换候选小区中测量结果大于或等于第一阈值的小区对应的小区标识;
    所述终端设备测得的条件切换候选小区中测量结果大于或等于第一阈值的小区对应的小区标识以及对应的小区的测量结果;
    所述终端设备测得的条件切换候选小区中测量结果大于或等于第二阈值的小区对应的小区标识,且上报的小区标识最多不能超过N2个;
    所述终端设备测得的条件切换候选小区中测量结果大于或等于第二阈值的小区对应的小区标识以及对应的小区的测量结果,且上报的小区个数最多不能超过N2个;
    所述终端设备测得的条件切换候选小区中测量结果与对应条件切换事件触发阈值的比值大于或等于第三阈值的小区对应的小区标识;
    所述终端设备测得的条件切换候选小区中测量结果与对应条件切换事件触发阈值的比值大于或等于第三阈值的小区对应的小区标识以及对应的小区的测量结果;
    所述终端设备测得的条件切换候选小区中测量结果与对应条件切换事件触发阈值的比值大于或等于第四阈值的小区对应的小区标识,且上报的小区个数最多不能超过N3个;
    所述终端设备测得的条件切换候选小区中测量结果与对应条件切换事件触发阈值的比值大于或等于第四阈值的小区对应的小区标识以及对应的小区的测量结果,且上报的小区个数最多不能超过N3个。
  41. 根据权利要求39或40所述的方法,还包括:
    所述终端设备接收所述第一网络设备和/或所述第四网络设备发送的第四指示信息,所述第四指示信息用于触发所述终端设备上报所述辅助信息。
  42. 根据权利要求39或40所述的方法,所述终端设备的辅助信息上报是基于默认事件满足时触发的或者是基于所述第一网络设备和/或所述第四网络设备配置的事件满足时触发的。
  43. 根据权利要求42所述的方法,还包括:
    所述终端设备接收所述第一网络设备和/或所述第四网络设备发送的事件配置信息,所述事件配置信息用于配置与所述辅助信息上报相关的事件关联的配置;
    其中,所述事件配置信息包括以下至少之一:
    与所述辅助信息上报相关的事件对应的事件类型标识;
    与所述辅助信息上报相关的事件对应的上报周期;
    与所述辅助信息上报相关的事件对应的上报次数;
    与所述辅助信息上报相关的事件对应的触发上报阈值。
  44. 一种第一网络设备,包括:
    发送单元,用于发送第一消息,所述第一消息用于条件切换控制;
    其中,所述第一网络设备为终端设备当前连接的主小区PCell、主节点MN或辅节点SN中的至少之一。
  45. 根据权利要求44所述的设备,所述发送单元,还用于向第二网络设备和/或第三网络设备发送第一消息;
    其中,所述第二网络设备为所述终端设备关联的条件切换候选小区,所述第三网络设备为所述终端设备发生条件切换前连接的PCell、MN或SN中的至少之一。
  46. 根据权利要求44或45所述的第一网络设备,所述第一网络设备与所述第二网络设备的关系包括以下至少之一:
    所述第一网络设备为所述终端设备当前连接的PCell,所述第二网络设备为所述终端设备关联的条件切换相关的PCell;
    所述第一网络设备为所述终端设备当前连接的MN,所述第二网络设备为所述终端设备关联的条件切换相关的MN;
    所述第一网络设备为所述终端设备当前连接的MN或SN,所述第二网络设备为所述终端设备关联的条件切换相关的SN。
  47. 根据权利要求44-46中任一项所述的第一网络设备,其中,所述第一消息包括以下至少之一:
    所述终端设备接入的条件切换候选小区对应的小区标识;
    第一指示信息,所述第一指示信息用于指示所述终端设备接入的条件切换候选小区不是所述第二网络设备和/或所述第三网络设备对应的小区;
    第二指示信息,所述第二指示信息用于请求所述第二网络设备和/或所述第三网络设备提供数据前转地址;
    第三指示信息,所述第三指示信息用于请求所述第二网络设备和/或所述第三网络设备同意作为所述终端设备的条件切换候选小区;
    所述终端设备在条件切换前连接的小区中使用的小区配置信息,所述切换前连接的小区为所述终端设备在条件切换前连接的SN对应的小区、MN对应的小区或PCell中的至少之一;
    所述终端设备上报的小区测量结果;
    所述终端设备的位置信息;
    所述终端设备的历史服务小区信息。
  48. 根据权利要求44-47中任一项所述的第一网络设备,其中,所述第一消息用于以下至少之一:
    请求所述第二网络设备和/或所述第三网络设备提供数据前转地址;
    请求所述第二网络设备和/或所述第三网络设备同意作为所述终端设备的条件切换候选小区;
    向所述第二网络设备和/或所述第三网络设备指示所述终端设备发生了条件切换。
  49. 根据权利要求44-48中任一项所述的第一网络设备,还包括:
    第一接收单元,用于接收所述第二网络设备和/或所述第三网络设备发送的第一消息响应消息;
    其中,所述第一消息响应消息用于通知所述第一网络设备将所述第二网络设备和/或所述第三网络设备为所述终端设备预留的配置信息从终端设备配置的条件切换配置信息中移除;或者,所述第一消息响应消息用于通知所述第一网络设备所述第二网络设备和/或所述第三网络设备同意作为终端设备的条件切换候选小区。
  50. 根据权利要求49所述的第一网络设备,其中,在所述第一消息响应消息用于通知所述第一网络设备所述第二网络设备和/或所述第三网络设备同意作为终端设备的条件切换候选小区的情况下,所述第一消息响应消息包括以下至少之一:
    所述第二网络设备和/或所述第三网络设备分配的数据前转地址;
    所述第二网络设备和/或所述第三网络设备对应的小区为终端设备配置或更新的小区配置信息;
    所述第二网络设备和/或所述第三网络设备对应的小区同意作为终端设备的条件切换候选小区的有效时长信息;
    所述第二网络设备和/或所述第三网络设备为自身作为条件切换候选小区分配的小区标识。
  51. 根据权利要求44-50中任一项所述的第一网络设备,还包括:
    所述第二接收单元,用于接收第四网络设备发送的第二消息,所述第二消息用于通知所述第一网络设备所述终端设备成功接入或者切换到所述第四网络设备;
    其中,所述第四网络设备为所述终端设备发生条件切换后连接的PCell、MN或SN中的至少之一。
  52. 根据权利要求44-51中任一项所述的第一网络设备,所述发送单元,还用于向第三网络设备发送第三消息,所述第三消息用于通知所述第三网络设备停止向所述终端设备发送数据;
    其中,所述第三网络设备为所述终端设备发生条件切换前连接的PCell、MN或SN中的至少之一。
  53. 根据权利要求44-52中任一项所述的第一网络设备,所述发送单元,还用于向第四网络设备发送第四消息,所述第四消息用于条件切换控制;
    其中,所述第四网络设备为所述终端设备发生条件切换后连接的PCell、MN或SN中的至少之一。
  54. 根据权利要求53所述的设备,其中,所述第四消息包括:
    第二网络设备和/或第三网络设备分配的数据前转地址;和/或,
    所述第二网络设备和/或所述第三网络设备对应的小区作为终端设备的条件切换候选小区的有效时长信息。
  55. 根据权利要求44-54中任一项所述的第一网络设备,所述发送单元,还用于向所述第四网络设备发送第五消息,所述第五消息用于辅助所述终端设备当前连接的PCell、MN或SN中的至少之一进行数据前转。
  56. 根据权利要求55所述的设备,其中,所述第五消息包括以下至少之一:
    建议触发数据前转的小区标识;
    建议触发数据前转的数据前转地址;
    不建议触发数据前转的小区标识;
    不建议触发数据前转的数据前转地址;
    终端设备上报的小区测量结果;
    终端设备的位置信息。
  57. 根据权利要求44-56中任一项所述的第一网络设备,还包括:
    所述第三接收单元,用于接收所述终端设备上报的辅助信息,所述辅助信息与条件切换候选小区相关。
  58. 根据权利要求57所述的设备,所述辅助信息包括以下至少之一:
    所述终端设备推测下一次最有可能执行条件切换的小区对应的小区标识;
    所述终端设备推测下一次有可能执行条件切换的小区对应的小区标识,且上报的小区标识最多不能超过M个;
    所述终端设备测得的条件切换候选小区中测量结果最好的N1个小区的小区标识;
    所述终端设备测得的条件切换候选小区中测量结果最好的N1个小区的小区标识以及对应的小区的测量结果;
    所述终端设备测得的条件切换候选小区中测量结果大于或等于第一阈值的小区对应的小区标识;
    所述终端设备测得的条件切换候选小区中测量结果大于或等于第一阈值的小区对应的小区标识以及对应的小区的测量结果;
    所述终端设备测得的条件切换候选小区中测量结果大于或等于第二阈值的小区对应的小区标识,且 上报的小区标识最多不能超过N2个;
    所述终端设备测得的条件切换候选小区中测量结果大于或等于第二阈值的小区对应的小区标识以及对应的小区的测量结果,且上报的小区个数最多不能超过N2个;
    所述终端设备测得的条件切换候选小区中测量结果与对应条件切换事件触发阈值的比值大于或等于第三阈值的小区对应的小区标识;
    所述终端设备测得的条件切换候选小区中测量结果与对应条件切换事件触发阈值的比值大于或等于第三阈值的小区对应的小区标识以及对应的小区的测量结果;
    所述终端设备测得的条件切换候选小区中测量结果与对应条件切换事件触发阈值的比值大于或等于第四阈值的小区对应的小区标识,且上报的小区个数最多不能超过N3个;
    所述终端设备测得的条件切换候选小区中测量结果与对应条件切换事件触发阈值的比值大于或等于第四阈值的小区对应的小区标识以及对应的小区的测量结果,且上报的小区个数最多不能超过N3个。
  59. 根据权利要求57或58所述的第一网络设备,所述发送单元,还用于向所述终端设备发送第四指示信息,所述第四指示信息用于触发所述终端设备上报所述辅助信息。
  60. 根据权利要求57或58所述的第一网络设备,所述发送单元,还用于向所述终端设备发送事件配置信息,所述事件配置信息用于配置与所述辅助信息上报相关的事件关联的配置;
    其中,所述事件配置信息包括以下至少之一:
    与所述辅助信息上报相关的事件对应的事件类型标识;
    与所述辅助信息上报相关的事件对应的上报周期;
    与所述辅助信息上报相关的事件对应的上报次数;
    与所述辅助信息上报相关的事件对应的触发上报阈值。
  61. 一种第二网络设备,包括:
    接收单元,用于接收第一网络设备发送的第一消息,所述第一消息用于条件切换控制;
    其中,所述第一网络设备为终端设备当前连接的PCell、MN或SN中的至少之一;所述第二网络设备为所述终端设备关联的条件切换候选小区。
  62. 根据权利要求61所述的第二网络设备,所述第一网络设备与所述第二网络设备的关系包括以下至少之一:
    所述第一网络设备为所述终端设备当前连接的PCell,所述第二网络设备为所述终端设备关联的条件切换相关的PCell;
    所述第一网络设备为所述终端设备当前连接的MN,所述第二网络设备为所述终端设备关联的条件切换相关的MN;
    所述第一网络设备为所述终端设备当前连接的MN或SN,所述第二网络设备为所述终端设备关联的条件切换相关的SN。
  63. 根据权利要求61或62所述的第二网络设备,其中,所述第一消息包括以下至少之一:
    所述终端设备接入的条件切换候选小区对应的小区标识;
    第一指示信息,所述第一指示信息用于指示所述终端设备接入的条件切换候选小区不是所述第二网络设备对应的小区;
    第二指示信息,所述第二指示信息用于请求所述第二网络设备提供数据前转地址;
    第三指示信息,所述第三指示信息用于请求所述第二网络设备同意继续作为所述终端设备的条件切换候选小区;
    所述终端设备在条件切换前连接的小区中使用的小区配置信息,所述切换前连接的小区为所述终端设备在条件切换前连接的SN对应的小区、MN对应的小区或PCell中的至少之一;
    所述终端设备上报的小区测量结果;
    所述终端设备的位置信息;
    所述终端设备的历史服务小区信息。
  64. 根据权利要求61-63中任一项所述的第二网络设备,其中,所述第一消息用于以下至少之一:
    请求所述第二网络设备提供数据前转地址;
    请求所述第二网络设备同意继续作为所述终端设备的条件切换候选小区;
    向所述第二网络设备指示所述终端设备发生了条件切换。
  65. 根据权利要求61-64中任一项所述的第二网络设备,还包括:
    发送单元,还用于向所述第一网络设备发送第一消息响应消息;
    其中,所述第一消息响应消息用于通知所述第一网络设备将所述第二网络设备为所述终端设备预留的配置信息从所述终端设备配置的条件切换配置信息中移除;或者,所述第一消息响应消息用于通知第 一网络设备所述第二网络设备同意继续作为所述终端设备的条件切换候选小区。
  66. 根据权利要求65所述的第二网络设备,其中,在所述第一消息响应消息用于通知所述第一网络设备所述第二网络设备同意继续作为所述终端设备的条件切换候选小区的情况下,所述第一消息响应消息包括以下至少之一:
    所述第二网络设备分配的数据前转地址;
    所述第二网络设备对应的小区为所述终端设备配置或更新的小区配置信息;
    所述第二网络设备对应的小区同意继续作为所述终端设备的条件切换候选小区的有效时长信息;
    所述第二网络设备为自身作为条件切换候选小区分配的小区标识。
  67. 一种第三网络设备,包括:
    接收单元,用于接收第一网络设备发送的第一消息,所述第一消息用于条件切换控制;
    其中,所述第一网络设备为终端设备当前连接的PCell、MN或SN中的至少之一;所述第三网络设备为所述终端设备发生条件切换前连接的PCell、MN或SN中的至少之一。
  68. 根据权利要求67所述的第三网络设备,其中,所述第一消息包括以下至少之一:
    所述终端设备接入的条件切换候选小区对应的小区标识;
    第一指示信息,所述第一指示信息用于指示所述终端设备接入的条件切换候选小区不是所述第三网络设备对应的小区;
    第二指示信息,所述第二指示信息用于请求所述第三网络设备提供数据前转地址;
    第三指示信息,所述第三指示信息用于请求所述第三网络设备同意作为所述终端设备的条件切换候选小区;
    所述终端设备在条件切换前连接的小区中使用的小区配置信息,所述切换前连接的小区为所述终端设备在条件切换前连接的SN对应的小区、MN对应的小区或PCell中的至少之一;
    所述终端设备上报的小区测量结果;
    所述终端设备的位置信息;
    所述终端设备的历史服务小区信息。
  69. 根据权利要求67或68所述的第三网络设备,其中,所述第一消息用于以下至少之一:
    请求所述第三网络设备提供数据前转地址;
    请求所述第三网络设备同意作为所述终端设备的条件切换候选小区;
    向所述第三网络设备指示所述终端设备发生了条件切换。
  70. 根据权利要求67-69中任一项所述的第三网络设备,还包括:
    发送单元用于向所述第一网络设备发送第一消息响应消息;
    其中,所述第一消息响应消息用于通知所述第一网络设备将所述第三网络设备为所述终端设备预留的配置信息从所述终端设备配置的条件切换配置信息中移除;或者,所述第一消息响应消息用于通知所述第一网络设备所述第三网络设备同意作为所述终端设备的条件切换候选小区。
  71. 根据权利要求70所述的第三网络设备,其中,在所述第一消息响应消息用于通知所述第一网络设备所述第三网络设备同意作为所述终端设备的条件切换候选小区的情况下,所述第一消息响应消息包括以下至少之一:
    所述第三网络设备分配的数据前转地址;
    所述第三网络设备对应的小区为所述终端设备配置或更新的小区配置信息;
    所述第三网络设备对应的小区同意作为终端设备的条件切换候选小区的有效时长信息;
    所述第三网络设备为自身作为条件切换候选小区分配的小区标识。
  72. 根据权利要求67-71中任一项所述的第三网络设备,其中,所述接收单元,还用于第三网络设备接收第一网络设备发送的第三消息,所述第三消息用于通知所述第三网络设备停止向所述终端设备发送数据。
  73. 一种第四网络设备,包括:
    接收单元,用于接收第一网络设备发送的第四消息,所述第四消息用于条件切换控制;
    其中,所述第一网络设备为终端设备当前连接的PCell、MN或SN中的至少之一;所述第四网络设备为所述终端设备发生条件切换后连接的PCell、MN或SN中的至少之一。
  74. 根据权利要求73所述的第四网络设备,其中,所述第四消息包括:
    第二网络设备和/或第三网络设备分配的数据前转地址;和/或,
    所述第二网络设备和/或所述第三网络设备对应的小区作为终端设备的条件切换候选小区的有效时长信息。
  75. 根据权利要求73或74所述的第四网络设备,所述接收单元,还用于接收所述第一网络设备发 送的第五消息,所述第五消息用于辅助所述终端设备当前连接的PCell、MN或SN中的至少之一进行数据前转。
  76. 根据权利要求75所述的第四网络设备,其中,所述第五消息包括以下至少之一:
    建议触发数据前转的小区标识;
    建议触发数据前转的数据前转地址;
    不建议触发数据前转的小区标识;
    不建议触发数据前转的数据前转地址;
    所述终端设备上报的小区测量结果;
    所述终端设备的位置信息。
  77. 根据权利要求76所述的第四网络设备,还包括:
    第一发送单元,用于向所述第一网络设备发送第二消息,所述第二消息用于通知所述第一网络设备所述终端设备成功接入或者切换到所述第四网络设备。
  78. 根据权利要求73-77中任一项所述的第四网络设备,所述接收单元,还用于接收所述终端设备上报的辅助信息,所述辅助信息与条件切换候选小区相关。
  79. 根据权利要求78所述的设备,所述辅助信息包括以下至少之一:
    所述终端设备推测下一次最有可能执行条件切换的小区对应的小区标识;
    所述终端设备推测下一次有可能执行条件切换的小区对应的小区标识,且上报的小区标识最多不能超过M个;
    所述终端设备测得的条件切换候选小区中测量结果最好的N1个小区的小区标识;
    所述终端设备测得的条件切换候选小区中测量结果最好的N1个小区的小区标识以及对应的小区的测量结果;
    所述终端设备测得的条件切换候选小区中测量结果大于或等于第一阈值的小区对应的小区标识;
    所述终端设备测得的条件切换候选小区中测量结果大于或等于第一阈值的小区对应的小区标识以及对应的小区的测量结果;
    所述终端设备测得的条件切换候选小区中测量结果大于或等于第二阈值的小区对应的小区标识,且上报的小区标识最多不能超过N2个;
    所述终端设备测得的条件切换候选小区中测量结果大于或等于第二阈值的小区对应的小区标识以及对应的小区的测量结果,且上报的小区个数最多不能超过N2个;
    所述终端设备测得的条件切换候选小区中测量结果与对应条件切换事件触发阈值的比值大于或等于第三阈值的小区对应的小区标识;
    所述终端设备测得的条件切换候选小区中测量结果与对应条件切换事件触发阈值的比值大于或等于第三阈值的小区对应的小区标识以及对应的小区的测量结果;
    所述终端设备测得的条件切换候选小区中测量结果与对应条件切换事件触发阈值的比值大于或等于第四阈值的小区对应的小区标识,且上报的小区个数最多不能超过N3个;
    所述终端设备测得的条件切换候选小区中测量结果与对应条件切换事件触发阈值的比值大于或等于第四阈值的小区对应的小区标识以及对应的小区的测量结果,且上报的小区个数最多不能超过N3个。
  80. 根据权利要求78或79所述的第四网络设备,还包括:
    第二发送单元,用于向所述终端设备发送第四指示信息,所述第四指示信息用于触发所述终端设备上报所述辅助信息。
  81. 根据权利要求78或79所述的第四网络设备,所述第二发送单元,还用于向所述终端设备发送事件配置信息,所述事件配置信息用于配置与所述辅助信息上报相关的事件关联的配置;
    其中,所述事件配置信息包括以下至少之一:
    与所述辅助信息上报相关的事件对应的事件类型标识;
    与所述辅助信息上报相关的事件对应的上报周期;
    与所述辅助信息上报相关的事件对应的上报次数;
    与所述辅助信息上报相关的事件对应的触发上报阈值。
  82. 一种终端设备,包括:
    上报单元,用于向第一网络设备和/或第四网络设备上报辅助信息,所述辅助信息与条件切换候选小区相关;
    其中,所述第一网络设备为所述终端设备当前连接的PCell、MN或SN中的至少之一;所述第四网络设备为所述终端设备发生条件切换后连接的PCell、MN或SN中的至少之一。
  83. 根据权利要求82所述的终端设备,所述辅助信息包括以下至少之一:
    所述终端设备推测下一次最有可能执行条件切换的小区对应的小区标识;
    所述终端设备推测下一次有可能执行条件切换的小区对应的小区标识,且上报的小区标识最多不能超过M个;
    所述终端设备测得的条件切换候选小区中测量结果最好的N1个小区的小区标识;
    所述终端设备测得的条件切换候选小区中测量结果最好的N1个小区的小区标识以及对应的小区的测量结果;
    所述终端设备测得的条件切换候选小区中测量结果大于或等于第一阈值的小区对应的小区标识;
    所述终端设备测得的条件切换候选小区中测量结果大于或等于第一阈值的小区对应的小区标识以及对应的小区的测量结果;
    所述终端设备测得的条件切换候选小区中测量结果大于或等于第二阈值的小区对应的小区标识,且上报的小区标识最多不能超过N2个;
    所述终端设备测得的条件切换候选小区中测量结果大于或等于第二阈值的小区对应的小区标识以及对应的小区的测量结果,且上报的小区个数最多不能超过N2个;
    所述终端设备测得的条件切换候选小区中测量结果与对应条件切换事件触发阈值的比值大于或等于第三阈值的小区对应的小区标识;
    所述终端设备测得的条件切换候选小区中测量结果与对应条件切换事件触发阈值的比值大于或等于第三阈值的小区对应的小区标识以及对应的小区的测量结果;
    所述终端设备测得的条件切换候选小区中测量结果与对应条件切换事件触发阈值的比值大于或等于第四阈值的小区对应的小区标识,且上报的小区个数最多不能超过N3个;
    所述终端设备测得的条件切换候选小区中测量结果与对应条件切换事件触发阈值的比值大于或等于第四阈值的小区对应的小区标识以及对应的小区的测量结果,且上报的小区个数最多不能超过N3个。
  84. 根据权利要求82或83所述的终端设备,还包括:
    接收单元,用于接收所述第一网络设备和/或所述第四网络设备发送的第四指示信息,所述第四指示信息用于触发所述终端设备上报所述辅助信息。
  85. 根据权利要求82或83所述的终端设备,所述终端设备的辅助信息上报是基于默认事件满足时触发的或者是基于所述第一网络设备和/或所述第四网络设备配置的事件满足时触发的。
  86. 根据权利要求85所述的终端设备,所述接收单元,还用于接收所述第一网络设备和/或所述第四网络设备发送的事件配置信息,所述事件配置信息用于配置与所述辅助信息上报相关的事件关联的配置;
    其中,所述事件配置信息包括以下至少之一:
    与所述辅助信息上报相关的事件对应的事件类型标识;
    与所述辅助信息上报相关的事件对应的上报周期;
    与所述辅助信息上报相关的事件对应的上报次数;
    与所述辅助信息上报相关的事件对应的触发上报阈值。
  87. 一种终端设备,包括:处理器和存储器,该存储器用于存储计算机程序,所述处理器用于调用并运行所述存储器中存储的计算机程序,以使所述终端设备执行如权利要求39至43中任一项所述的方法。
  88. 一种网络设备,包括:处理器和存储器,该存储器用于存储计算机程序,所述处理器用于调用并运行所述存储器中存储的计算机程序,以使所述网络设备执行如权利要求1至17、18至23、24至29、30至38中任一项所述的方法。
  89. 一种芯片,包括:处理器,用于从存储器中调用并运行计算机程序,使得安装有所述芯片的设备执行如权利要求1至17、18至23、24至29、30至38或39至43中任一项所述的方法。
  90. 一种计算机可读存储介质,用于存储计算机程序,当所述计算机程序被设备运行时使得所述设备执行如权利要求1至17、18至23、24至29、30至38或39至43中任一项所述的方法。
  91. 一种计算机程序产品,包括计算机程序指令,该计算机程序指令使得计算机执行如权利要求1至17、18至23、24至29、30至38或39至43中任一项所述的方法。
  92. 一种计算机程序,所述计算机程序使得计算机执行如权利要求1至17、18至23、24至29、30至38或39至43中任一项所述的方法。
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