WO2022199371A1 - 小区切换方法及装置、存储介质、用户设备、基站设备 - Google Patents

小区切换方法及装置、存储介质、用户设备、基站设备 Download PDF

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Publication number
WO2022199371A1
WO2022199371A1 PCT/CN2022/079634 CN2022079634W WO2022199371A1 WO 2022199371 A1 WO2022199371 A1 WO 2022199371A1 CN 2022079634 W CN2022079634 W CN 2022079634W WO 2022199371 A1 WO2022199371 A1 WO 2022199371A1
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Prior art keywords
cell
handover
candidate
configuration
indication information
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PCT/CN2022/079634
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English (en)
French (fr)
Inventor
邓云
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展讯通信（上海）有限公司
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Publication of WO2022199371A1 publication Critical patent/WO2022199371A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/34—Reselection control
    • H04W36/36—Reselection control by user or terminal equipment
    • H04W36/362—Conditional handover
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/00838—Resource reservation for handover
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention relates to the field of communication technologies, and in particular, to a cell handover method and device, a storage medium, user equipment, and base station equipment.
  • a terminal can access the Internet through an access point (Access Point, AP), and LTE Long Term Evolution (LTE) or new wireless ( New Radio, NR) without technology, the access point can integrate some core network functions, and can be deployed in licensed or unlicensed spectrum.
  • Access points can be flexibly deployed in places such as homes and enterprises to provide services for a small number of users. Access points serve fewer users and may be more fixed.
  • a conditional handover mechanism is introduced in wireless communication.
  • the conditional handover command contains a handover condition (handover execution condition), such as judging the candidate target cell's Whether the signal quality is higher than that of the serving cell by a predetermined offset.
  • handover execution condition such as judging the candidate target cell's Whether the signal quality is higher than that of the serving cell by a predetermined offset.
  • the user equipment User Equipment, UE
  • the UE uses the configuration parameters of the candidate target cell included in the handover command to access the target cell, and obtains from the target cell.
  • the target cell initiates a random access procedure, and after sending a handover complete command (ie, RRC reconfiguration is completed), the UE implements handover to the target cell; if the handover conditions are not satisfied, the UE continues to maintain the RRC connection with the source base station.
  • the source base station can configure multiple candidate target cells and corresponding handover execution conditions.
  • the UE needs to delete the saved configurations of other candidate cells, and the candidate cells must be reconfigured for each handover.
  • handover signaling may not be sent to the UE in time, resulting in handover failure.
  • the technical problem solved by the present invention is how to realize cell handover quickly.
  • an embodiment of the present invention provides a cell handover method, the cell handover method includes: receiving the configuration and indication information of a candidate cell; determining a candidate cell that satisfies a corresponding handover condition as a target cell, or receiving a handover command to learn the target cell. cell, and perform cell handover; according to the indication information, it is determined to save the configuration of other candidate cells except the target cell, and the saved configuration of the candidate cell is used for subsequent conditional handover.
  • the receiving the configuration and indication information of the candidate cell from the base station device includes: receiving the indication information while receiving the configuration of the candidate cell, the configuration of the candidate cell and the indication information are carried in the same signaling.
  • the indication information is an independent information element for each candidate cell, and the indication information indicates whether to save the configuration of the candidate cell.
  • the determining to save the configuration of other candidate cells except the target cell according to the indication information includes: if all independent information elements for the other candidate cells indicate to save, then save the configuration of the other candidate cells. configuration.
  • the indication information includes a valid area.
  • the valid area includes a cell list or a tracking area list.
  • the determining to save the configuration of other candidate cells other than the target cell according to the indication information includes: judging whether the target cell or the other candidate cells belong to the effective area; if so, saving the configuration the configuration of the other candidate cells.
  • the cell handover method further includes: saving the configuration of the source serving cell before the handover as the configuration of the candidate cell.
  • the cell handover method further includes: judging whether there is a candidate cell that satisfies the corresponding handover condition according to the saved configuration of the candidate cell; if there is a candidate cell that satisfies the corresponding handover condition, directly determining the candidate cell as the target cell and perform cell handover.
  • an embodiment of the present invention further discloses a cell handover method.
  • the cell handover method includes: determining the configuration and indication information of a candidate cell; sending the configuration of the candidate cell and the indication information for user equipment Determine the candidate cell that satisfies the corresponding handover condition as the target cell, or send a handover command to indicate the target cell to the user equipment for the user equipment to perform cell handover, and determine to save other candidates except the target cell according to the indication information Cell configuration.
  • the determining the indication information includes: determining that the number of times the user equipment accesses the first cell reaches a preset threshold according to the access information of the user equipment; instructing in the indication information to save the information of the first cell. configuration.
  • the embodiment of the present invention also discloses a cell handover device, which is characterized by comprising:
  • a receiving module configured to receive the configuration and indication information of the candidate cell
  • a handover module configured to determine a candidate cell that satisfies the corresponding handover condition as a target cell, or receive a handover command to learn the target cell, and perform cell handover;
  • a saving module configured to determine and save configurations of other candidate cells except the target cell according to the indication information.
  • An embodiment of the present invention further discloses a cell handover device, the cell handover device includes: a configuration module for determining the configuration and indication information of a candidate cell; a sending module for sending the configuration of the candidate cell and the indication information, Take the candidate cell for the user equipment to determine the corresponding handover condition as the target cell, or send a handover command to make the user equipment know the target cell, and perform cell handover, and determine to save other candidate cells except the target cell according to the indication information.
  • a configuration module for determining the configuration and indication information of a candidate cell
  • a sending module for sending the configuration of the candidate cell and the indication information, Take the candidate cell for the user equipment to determine the corresponding handover condition as the target cell, or send a handover command to make the user equipment know the target cell, and perform cell handover, and determine to save other candidate cells except the target cell according to the indication information.
  • the embodiment of the present invention also discloses a storage medium on which a computer program is stored, and when the computer program is run by a processor, the steps of the cell handover method are executed.
  • An embodiment of the present invention further discloses a user equipment, including a memory and a processor, the memory stores a computer program that can be run on the processor, and the processor executes the cell when the processor runs the computer program The steps to switch the method.
  • An embodiment of the present invention further discloses a base station device, including a memory and a processor, the memory stores a computer program that can be run on the processor, and the processor executes the cell when the processor runs the computer program The steps to switch the method.
  • the user equipment also indicates information when receiving the configuration of the candidate cell, and the indication information can indicate whether the user equipment needs to save the configuration of the candidate cell.
  • the configuration of other candidate cells other than the target cell makes it unnecessary for the network side to reconfigure the candidate cells when cell handover is required in the future, and the user equipment directly performs cell handover according to the saved configuration of the candidate cell, which reduces signaling overhead and effectively improves spectrum efficiency.
  • the cell frequently used by the user equipment can be determined according to the access times of the user equipment, that is, the range of the cell where the user equipment usually moves. So that the user equipment can obtain the configuration of the cell in time when switching to the cell.
  • FIG. 1 is a flowchart of a cell handover method according to an embodiment of the present invention.
  • FIG. 2 is a flowchart of another cell handover method according to an embodiment of the present invention.
  • FIG. 3 is a specific schematic diagram of a cell handover method in a specific scenario according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of a cell handover apparatus according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of another cell switching apparatus according to an embodiment of the present invention.
  • the UE needs to delete the saved configurations of other candidate cells, and the candidate cells must be reconfigured for each handover.
  • handover signaling may not be sent to the UE in time, resulting in handover failure.
  • the inventor of the present application has found that, for a newly introduced access point, such as being deployed in a home or a company, it may be deployed in an unlicensed spectrum, including multiple adjacent serving cells, and the UE usually always moves in these cells.
  • the UE adopts the conditional handover mechanism and implements the handover, it is not necessary to release the saved candidate cell configuration, because the UE is likely to perform handover between these cells later, so consider enhancing the existing conditional update mechanism so that the UE can Make full use of the candidate cell configuration of the network configuration.
  • the user equipment obtains indication information when receiving the configuration of the candidate cell, and the indication information can indicate whether the user equipment needs to save the configuration of the candidate cell, so that after the user equipment performs the cell handover, the user equipment saves the configuration of the candidate cell according to the instruction.
  • the configuration of other candidate cells other than the target cell mentioned above makes it unnecessary for the network side to reconfigure the candidate cells in the subsequent handover of the required cell conditions, and the user equipment directly performs the cell handover according to the saved configuration of the candidate cells, reducing signaling overhead and effectively improving the frequency spectrum. efficiency.
  • the cell frequently used by the user equipment can be determined according to the number of accesses of the user equipment, that is, the range of the cell where the user equipment usually moves. configuration, so that the user equipment can use the saved configuration of the cell to implement access in time when switching to the cell.
  • the technical solution of the present invention can be applied to 5G (5Generation) communication systems, 4G and 3G communication systems, and various new communication systems in the future, such as 6G and 7G.
  • FIG. 1 is a flowchart of a cell handover method according to an embodiment of the present invention.
  • the cell handover method may be applied to the user equipment side, that is, the user equipment may perform each step of the method.
  • the user equipment may be various appropriate terminal devices, such as a mobile phone, a computer, a tablet computer, and the like.
  • the base station device that interacts with the user equipment may be a base station in a traditional communication network, or may be an access point device capable of providing a base station function, etc., which is not limited in this embodiment of the present invention.
  • the cell handover method may include the following steps:
  • Step S101 Receive the configuration and indication information of a candidate cell
  • Step S102 Determine a candidate cell that satisfies the corresponding handover condition as a target cell, or receive a traditional handover command to learn the target cell, and perform cell handover;
  • Step S103 Determine and save configurations of other candidate cells except the target cell according to the indication information.
  • Base station equipment such as traditional base station or access point equipment, provides wireless services in homes or companies, and usually, to achieve coverage, multiple serving cells may be deployed.
  • the base station device may include 4 serving cells: Cell1, Cell2, Cell3 and Cell4, and each base station device may serve one cell, or one base station device may serve multiple cells.
  • the UE accesses Cell1 in a connected state. Because of the movement of the UE, the base station device configures a conditional handover mechanism for the UE, which may include the configurations of the other three candidate cells.
  • the base station equipment sends indication information when sending the configuration of the candidate cell to the user equipment, and the indication information can indicate whether the user equipment saves the configuration of the candidate cell after the handover is performed.
  • the signaling for sending the configuration of the candidate cell may be a conditional handover command, for example, may be Radio Resource Control (Radio Resource Control, RRC) signaling.
  • RRC Radio Resource Control
  • the configuration of the candidate cell may include an identifier of the candidate cell and a handover condition (ie, a handover execution condition) corresponding to the candidate cell.
  • a handover condition ie, a handover execution condition
  • the handover execution conditions corresponding to different candidate cells may be the same or different.
  • the user equipment may evaluate whether each candidate cell satisfies the handover condition, for example, determine whether the signal quality of the candidate cell is higher than the signal quality of the serving cell by a predetermined offset. If the candidate cell satisfies the handover condition, the UE accesses the candidate cell as the target cell. Specifically, the UE can use the relevant parameters in the configuration of the candidate cell to complete the access, synchronize with the target cell, initiate a random access procedure in the target cell, and complete the RRC reconfiguration. The UE implements handover to the target cell.
  • the UE When the UE evaluates a candidate cell, it may receive a traditional handover command sent by the base station device.
  • the traditional handover command includes a target cell, and the UE performs handover according to the target cell in the handover command.
  • the traditional handover command may also contain indication information, for example, the indication information may be updated or the indication information may be newly set.
  • the UE only receives the candidate cell configuration without the target cell in step S101, the UE can obtain the indication information from the conventional handover command.
  • the UE determines to save the configurations of other candidate cells except the target cell according to the indication information.
  • the saved configuration of the candidate cell is used for the subsequent conditional handover. That is to say, by saving the configuration of the candidate cell, the configuration of the candidate cell can be acquired in time during subsequent handover, which simplifies the subsequent cell handover process.
  • the base station equipment configures three candidate cells Cell2, Cell3 and Cell4 for the UE. After the UE switches from Cell1 to Cell2, the remaining candidate cells (that is, other candidate cells) are Cell3 and Cell4, and the UE determines to save Cell3 according to the instructions of the base station. and the configuration of Cell4.
  • the cell handover method may further include the following steps: judging whether there is a candidate cell that satisfies the corresponding handover condition according to the saved configuration of the candidate cell; if there is a candidate cell that satisfies the corresponding handover condition If the candidate cell is selected, the candidate cell is directly determined as the target cell, and cell handover is performed.
  • the technical solution of the present invention can perform the cell execution directly according to the saved configuration of the candidate cell without the need to reconfigure the candidate cell on the network side during subsequent conditional handovers. handover, reducing signaling overhead and effectively improving spectral efficiency.
  • the indication information is received while the configuration of the candidate cell is received, and the configuration of the candidate cell and the indication information are carried in the same signaling.
  • the indication information is sent by multiplexing the signaling for sending the configuration of the candidate cell, and the signaling overhead will not be increased.
  • the indication information is an independent information element for each candidate cell, and the indication information indicates whether to save the configuration of the candidate cell.
  • the base station device may find that the UE usually moves in these candidate cells, so the base station device may instruct the UE not to release the configuration of these candidate cells after handover .
  • the independent information element may be a newly added bit in the RRC signaling. For example, if the value of the bit is 1, it means that it is saved; otherwise, if the value of the bit is 0, it means that it is not saved. For each candidate cell, there is one newly added bit.
  • the configuration of the other candidate cells is saved.
  • the base station equipment saves the configurations of candidate cells Cell2, Cell3 and Cell4 after handover through an independent information element instruction; after the UE switches from Cell1 to Cell2, the UE determines to save the configurations of Cell3 and Cell4 according to the indication of the independent information element.
  • the indication information includes a valid area.
  • the valid area includes a cell list or a tracking area list.
  • the target cell or the other candidate cells belong to the effective area; if so, the configuration of the other candidate cells is saved. That is to say, if the target cell or the other candidate cells belong to the effective area, it means that the network side corresponding to the above-mentioned cell has saved the context of the UE; then the UE can save the configuration of the above-mentioned cell, and can directly switch according to the following conditions during handover.
  • the configuration of the candidate cell is evaluated for handover without the interaction between the source base station and the target base station, which saves signaling overhead.
  • the UE determines whether to save the configuration of the corresponding candidate cell according to whether the target cell after the handover belongs to an effective area configured by the base station equipment.
  • the valid area can be Cell1, Cell2, Cell3 and Cell4.
  • the UE finds that the new serving cell belongs to the valid area, so the UE saves the configurations of other candidate cells (Cell3 and Cell4).
  • the UE if the UE switches to another target cell that does not belong to the valid area configuration, the UE releases the configuration of the candidate cell after the handover.
  • the UE may continue to move, for example, to the boundary of the cell Cell3, the UE may use the saved configuration of the cell Cell3 and the corresponding handover conditions to determine whether the cell Cell3 meets the handover conditions, and if so, the handover can be implemented.
  • the UE can move between multiple cells with less signaling overhead, which can effectively improve the spectrum efficiency.
  • the UE in addition to saving the configuration of other candidate cells, may also save the configuration of the source serving cell before handover as the configuration of the candidate cell.
  • the cell handover method can be applied to the base station equipment side, that is, each step of the method can be executed by the base station equipment.
  • the base station device may be a base station in a traditional communication network, or may be an access point device capable of providing a base station function, etc., which is not limited in this embodiment of the present invention.
  • the cell handover method may include the following steps:
  • Step S201 Determine the configuration and indication information of a candidate cell
  • Step S202 Send the configuration of the candidate cell and the indication information for the user equipment to determine the candidate cell that satisfies the corresponding handover condition as the target cell, or send a handover command to indicate the target cell to the user equipment for the user equipment Cell handover is performed, and configurations of other candidate cells other than the target cell are determined to be saved according to the indication information.
  • the step S201 may include the following steps: determining, according to historical access information of the user equipment, that the number of times the user equipment accesses the first cell reaches a preset threshold; instructing in the indication information to save the first cell Cell configuration.
  • the historical access information of the UE records the information of each cell accessed by the UE, and the base station device configures the first cell whose access times with the user equipment reaches a preset threshold as needing to be saved, that is, The cell configuration that the UE frequently accesses needs to be saved, so as to avoid the UE side saving a large number of unnecessary cell configurations and save the storage space of the UE.
  • the base station equipment usually provides network services in a specific area, for example, an access point usually provides wireless services in a home or a company, and the base station equipment may include multiple serving cells.
  • the UE has a corresponding identity, such as a company employee, and has a binding relationship with the base station device and the serving cell of the base station device. Then the base station equipment can determine the identity of the second cell according to the identity of the user equipment and the serving cell bound to it, the second cell is a candidate cell to be saved, and instructs to save the configuration of the second cell in the indication information. For example, for UE1, which is bound to the cells Cell1, Cell2, Cell3 and Cell4 included in the company access point, the access point can configure and save the configurations of Cell1, Cell2, Cell3 and Cell4 for UE1.
  • FIG. 3 shows the flow of a specific cell handover method.
  • step S301 the source base station 302 sends a handover request to the target base station 303 .
  • step S302 the target base station 303 sends a handover request confirmation to the source base station 302.
  • step S303 the source base station 302 sends a handover command to the UE301.
  • the handover command includes the configuration and indication information of each candidate cell.
  • step S304 the UE 301 determines whether the candidate cell satisfies the corresponding handover condition, and if so, performs cell handover.
  • step S305 it is determined to save the configurations of other candidate cells except the target cell according to the indication information.
  • step S306 the UE301 initiates random access to the target base station 303.
  • the UE 301 and the target base station 303 complete the RRC reconfiguration, and the UE 301 completes the handover of the target cell.
  • steps S301 to S306 are the cell handover procedures performed before the UE 301 does not save the candidate cell. After the UE 301 saves the configuration of the candidate cell, if the cell handover process needs to be performed, the above steps S301 , S302 and S303 can be saved. It can be seen from this that the embodiment of the present invention can realize the movement of the UE between multiple cells with less signaling overhead.
  • an embodiment of the present invention further discloses a cell handover apparatus 40 , and the cell handover apparatus 40 may include:
  • a receiving module 401 configured to receive configuration and indication information of a candidate cell
  • a handover module 402 configured to determine a candidate cell that satisfies the corresponding handover condition as a target cell, or receive a handover command to learn the target cell, and perform cell handover;
  • a saving module 403, configured to determine and save configurations of other candidate cells except the target cell according to the indication information.
  • the configurations of other candidate cells except the target cell are saved according to the instructions, so that when the cell handover needs to be performed according to the conditions subsequently, there is no need for the network side to reconfigure the candidate cells, and the user equipment directly
  • the saved configuration of candidate cells performs cell handover, reduces signaling overhead, and effectively improves spectrum efficiency.
  • an embodiment of the present invention also discloses a cell switching device 50, and the cell switching device 50 may include:
  • a configuration module 501 configured to determine the configuration and indication information of a candidate cell
  • a sending module 502 is configured to send the configuration of the candidate cell and the indication information, so that the user equipment can determine the candidate cell that satisfies the corresponding handover condition as the target cell, or send a traditional handover command to enable the user equipment to determine the target cell, and Cell handover is performed, and configurations of other candidate cells other than the target cell are determined to be saved according to the indication information.
  • the configuration module 501 may include: a first cell determination unit (not shown), configured to determine, according to the historical access information of the user equipment, that the number of times the user equipment accesses the first cell reaches a preset threshold; the configuration unit (not shown in the figure), for indicating in the indication information to save the configuration of the first cell.
  • the cell switching apparatus 40 and the cell switching apparatus 50 may be, for example, chips or chip modules.
  • each module/unit included in each device and product described in the above-mentioned embodiments it may be a software module/unit, a hardware module/unit, or a part of a software module/unit and a part of a hardware module/unit .
  • each module/unit included therein may be implemented by hardware such as circuits, or at least some of the modules/units may be implemented by a software program.
  • the remaining (if any) part of the modules/units can be implemented by hardware such as circuits; for each device and product applied to or integrated in the chip module, the modules/units contained therein can be They are all implemented by hardware such as circuits, and different modules/units can be located in the same component of the chip module (such as chips, circuit modules, etc.) or in different components, or at least some of the modules/units can be implemented by software programs.
  • the software program runs on the processor integrated inside the chip module, and the remaining (if any) part of the modules/units can be implemented by hardware such as circuits; for each device and product applied to or integrated in the terminal, each module contained in it
  • the units/units may all be implemented in hardware such as circuits, and different modules/units may be located in the same component (eg, chip, circuit module, etc.) or in different components in the terminal, or at least some of the modules/units may be implemented by software programs Realization, the software program runs on the processor integrated inside the terminal, and the remaining (if any) part of the modules/units can be implemented in hardware such as circuits.
  • the embodiment of the present invention further discloses a storage medium, the storage medium is a computer-readable storage medium, and a computer program is stored thereon, and the computer program can execute the cell handover methods shown in FIG. 1 to FIG. 3 when running. step.
  • the storage medium may include ROM, RAM, magnetic or optical disks, and the like.
  • the storage medium may also include a non-volatile memory (non-volatile) or a non-transitory (non-transitory) memory and the like.
  • the embodiment of the present invention further discloses a user equipment, the user equipment may include a memory and a processor, and the memory stores a computer program that can run on the processor. When the processor runs the computer program, the steps of the cell handover method shown in FIG. 1 and FIG. 3 can be executed.
  • the user equipment includes but is not limited to terminal equipment such as mobile phones, computers, and tablet computers.
  • An embodiment of the present invention further discloses a base station device, the base station device may include a memory and a processor, and the memory stores a computer program that can run on the processor.
  • the processor runs the computer program, the steps of the cell handover method shown in FIG. 2 and FIG. 3 can be executed.
  • the technical solution of the present invention is also applicable to different network architectures, including but not limited to relay network architecture, dual link architecture, Vehicle-to-Everything (vehicle-to-anything communication) architecture and other architectures.
  • the core network described in the embodiments of the present application may be an evolved packet core (EPC for short), a 5G Core Network (5G core network), or a new type of core network in a future communication system.
  • the 5G Core Network is composed of a set of devices, and realizes the access and mobility management functions (Access and Mobility Management Function, AMF) of functions such as mobility management, and provides functions such as packet routing and forwarding and QoS (Quality of Service) management.
  • AMF Access and Mobility Management Function
  • UPF User Plane Function
  • SMF Session Management Function
  • EPC consists of MME that provides functions such as mobility management and gateway selection, Serving Gateway (S-GW) that provides functions such as packet forwarding, and PDN Gateway (P-GW) that provides functions such as terminal address allocation and rate control.
  • S-GW Serving Gateway
  • P-GW PDN Gateway
  • a base station (base station, BS for short) in the embodiments of the present application which may also be referred to as base station equipment, is a device deployed in a radio access network (RAN) to provide a wireless communication function.
  • the equipment that provides base station functions in 2G networks includes base transceiver stations (English: base transceiver station, referred to as BTS), the equipment that provides base station functions in 3G networks includes NodeB (NodeB), and the equipment that provides base station functions in 4G networks.
  • eNB evolved NodeB
  • WLAN wireless local area networks
  • the device that provides base station functions is access point (access point, referred to as AP), 5G New Radio (New Radio) , referred to as NR) in the equipment gNB that provides base station functions, and the node B (ng-eNB) that continues to evolve, wherein the gNB and the terminal use NR technology to communicate, and the ng-eNB and the terminal use E-UTRA (Evolved Universal Terrestrial Radio Access) technology to communicate, both gNB and ng-eNB can be connected to the 5G core network.
  • the base station in the embodiment of the present application also includes a device that provides a base station function in a new communication system in the future, and the like.
  • the base station controller in this embodiment of the present application is a device for managing base stations, such as a base station controller (BSC) in a 2G network and a radio network controller (RNC) in a 3G network. ), and may also refer to a device for controlling and managing base stations in a new communication system in the future.
  • BSC base station controller
  • RNC radio network controller
  • the network side network in the embodiment of the present invention refers to a communication network that provides communication services for terminals, including a base station of a wireless access network, a base station controller of a wireless access network, and a device on the core network side.
  • the terminal in this embodiment of the present application may refer to various forms of user equipment (user equipment, UE for short), access terminal, subscriber unit, subscriber station, mobile station, mobile station (mobile station, built as MS), remote station, remote station A terminal, mobile device, user terminal, terminal equipment, wireless communication device, user agent or user equipment.
  • user equipment user equipment, UE for short
  • access terminal subscriber unit, subscriber station, mobile station, mobile station (mobile station, built as MS), remote station, remote station
  • subscriber unit subscriber station
  • mobile station mobile station (mobile station, built as MS)
  • remote station remote station
  • remote station remote station
  • remote station remote station
  • mobile device mobile device
  • user terminal terminal equipment
  • terminal equipment wireless communication device
  • user agent or user equipment user agent
  • the terminal device may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), Handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices with wireless communication capabilities, terminal devices in future 5G networks or future evolved public land mobile communication networks (Public Land Mobile Network, referred to as PLMN), which is not limited in this embodiment of the present application.
  • PLMN Public Land Mobile Network
  • the embodiment of the present application defines the unidirectional communication link from the access network to the terminal as the downlink, the data transmitted on the downlink is the downlink data, and the transmission direction of the downlink data is called the downlink direction;
  • the unidirectional communication link is the uplink, the data transmitted on the uplink is the uplink data, and the transmission direction of the uplink data is called the uplink direction.
  • connection in the embodiments of the present application refers to various connection modes such as direct connection or indirect connection, so as to realize communication between devices, which is not limited in the embodiments of the present application.
  • the processor may be a central processing unit (central processing unit, CPU for short), and the processor may also be other general-purpose processors, digital signal processors (digital signal processor, DSP for short) , application specific integrated circuit (ASIC), off-the-shelf programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.
  • a general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
  • the memory in the embodiments of the present application may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory may be read-only memory (ROM for short), programmable read-only memory (PROM for short), erasable programmable read-only memory (EPROM for short) , Electrically Erasable Programmable Read-Only Memory (electrically EPROM, EEPROM for short) or flash memory.
  • Volatile memory may be random access memory (RAM), which acts as an external cache.
  • RAM random access memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous Dynamic random access memory
  • SDRAM synchronous Dynamic random access memory
  • DDR SDRAM double data rate synchronous dynamic random access memory
  • ESDRAM enhanced synchronous dynamic random access memory
  • SLDRAM Synchronous connection dynamic random access memory
  • DR RAM direct memory bus random access memory
  • the above embodiments may be implemented in whole or in part by software, hardware, firmware or any other combination.
  • the above-described embodiments may be implemented in whole or in part in the form of a computer program product.
  • the computer program product includes one or more computer instructions or computer programs. When the computer instructions or computer programs are loaded or executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated.
  • the computer may be a general purpose computer, special purpose computer, 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 downloaded from a website site, computer, server or data center Transmission by wire or wireless to another website site, 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, a data center, or the like that contains one or more sets of available media.
  • the usable media may be magnetic media (eg, floppy disks, hard disks, magnetic tapes), optical media (eg, DVDs), or semiconductor media.
  • the semiconductor medium may be a solid state drive.
  • the size of the sequence numbers of the above-mentioned processes does not mean the sequence of execution, and the execution sequence of each process should be determined by its functions and internal logic, and should not be dealt with in the embodiments of the present application. implementation constitutes any limitation.
  • the disclosed method, apparatus and system may be implemented in other manners.
  • the device embodiments described above are only illustrative; for example, the division of the units is only a logical function division, and there may be other division methods in actual implementation; for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented.
  • the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may be physically included individually, or two or more units may be integrated into one unit.
  • the above-mentioned integrated unit may be implemented in the form of hardware, or may be implemented in the form of hardware plus software functional units.
  • the above-mentioned integrated units implemented in the form of software functional units can be stored in a computer-readable storage medium.
  • the above-mentioned software function unit is stored in a storage medium, and includes several instructions to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute part of the steps of the methods described in the various embodiments of the present invention.
  • the aforementioned storage medium includes: U disk, mobile hard disk, Read-Only Memory (ROM for short), Random Access Memory (RAM for short), magnetic disk or CD, etc. that can store program codes medium.

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Abstract

一种小区切换方法及装置、存储介质、用户设备、基站设备，小区切换方法包括：接收候选小区的配置以及指示信息；确定满足对应的切换条件的候选小区为目标小区，或者接收切换命令获知目标小区，并进行小区切换；根据所述指示信息确定保存除所述目标小区之外其他候选小区的配置，保存的候选小区的配置用于后续的条件切换。本发明技术方案能够快速地实现小区切换。

Description

小区切换方法及装置、存储介质、用户设备、基站设备
本申请要求2021年3月23日提交中国专利局、申请号为202110310720.8、发明名称为“小区切换方法及装置、存储介质、用户设备、基站设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及通信技术领域，尤其涉及一种小区切换方法及装置、存储介质、用户设备、基站设备。
背景技术
在一种新的无线通信系统中，一个终端可以通过一个接入点(Access Point,AP)接入互联网，终端和接入点之间采用LTE长期演进(Long Term Evolution，LTE)或新无线(New Radio，NR)的无技术，接入点可以集成部分核心网的功能，可以部署在授权频谱，也可以部署在非授权频谱。接入点可以灵活的部署在家庭、企业等场所，为小部分用户提供服务。接入点服务的用户较少，而且可能比较固定。
在无线通信中引入了一种条件切换(Conditional Handover)机制，该切换流程与原有切换流程最大的差别在于，条件切换命令中包含了一个切换条件(切换执行条件)，如判断候选目标小区的信号质量是否比服务小区的信号质量高预定的偏移量。用户设备(User Equipment,UE)收到该条件切换命令之后，判断切换执行条件是否满足，在满足条件时，UE利用切换命令中包含的候选目标小区的配置参数接入目标小区，与目标小区取得同步，在目标小区发起随机接入流程，在发送了切换完成命令(即RRC重配置完成)之后，UE实现切换到目标小区；如果切换条件不满足，UE继续维持与源基站的RRC连接。源基站可以配置多个候选目标小区以及对应的切换执行条件。
但是，按照现有的条件切换机制，当UE切换到目标小区之后，UE需要删除保存的其他候选小区配置，每次切换都要重新配置候选小区。此外，在非授权频谱部署，切换信令可能不能及时送到UE，导致切换失败。
发明内容
本发明解决的技术问题是如何快速地实现小区切换。
为解决上述技术问题，本发明实施例提供一种小区切换方法，小区切换方法包括：接收候选小区的配置以及指示信息；确定满足对应的切换条件的候选小区为目标小区，或者接收切换命令获知目标小区，并进行小区切换；根据所述指示信息确定保存除所述目标小区之外其他候选小区的配置，保存的候选小区的配置用于后续的条件切换。
可选的，所述接收来自基站设备的候选小区的配置以及指示信息包括：在接收所述候选小区的配置的同时接收所述指示信息，所述候选小区的配置与所述指示信息携带于同一信令中。
可选的，所述指示信息为针对每一候选小区的独立信元，所述指示信息指示是否保存该候选小区的配置。
可选的，所述根据所述指示信息确定保存除所述目标小区之外其他候选小区的配置包括：如果针对所述其他候选小区的独立信元均指示保存，则保存所述其他候选小区的配置。
可选的，所述指示信息包括有效区域。
可选的，所述有效区域包括小区列表或追踪区域列表。
可选的，所述根据所述指示信息确定保存除所述目标小区之外其他候选小区的配置包括：判断所述目标小区或所述其他候选小区是否属于所述有效区域；如果是，则保存所述其他候选小区的配置。
可选的，所述小区切换方法还包括：将切换前的源服务小区的配 置作为候选小区的配置进行保存。
可选的，所述小区切换方法还包括：根据已保存的候选小区的配置判断是否存在满足对应切换条件的候选小区；如果存在满足对应的切换条件的候选小区，则直接确定该候选小区为目标小区，并进行小区切换。
为解决上述技术问题，本发明实施例还公开了一种小区切换方法，小区切换方法包括：确定候选小区的配置以及指示信息；发送所述候选小区的配置以及所述指示信息，以供用户设备确定满足对应的切换条件的候选小区为目标小区，或者发送切换命令向用户设备指示目标小区，以供所述用户设备进行小区切换，根据所述指示信息确定保存除所述目标小区之外其他候选小区的配置。
可选的，所述确定指示信息包括：依据所述用户设备的访问信息确定所述用户设备接入第一小区的次数达到预设门限；在所述指示信息中指示保存所述第一小区的配置。
本发明实施例还公开了一种小区切换装置，其特征在于，包括：
接收模块，用于接收候选小区的配置以及指示信息；
切换模块，用于确定满足对应的切换条件的候选小区为目标小区，或者接收切换命令获知目标小区，并进行小区切换；
保存模块，用于根据所述指示信息确定保存除所述目标小区之外其他候选小区的配置。
本发明实施例还公开了一种小区切换装置，小区切换装置包括：配置模块，用于确定候选小区的配置以及指示信息；发送模块，用于发送所述候选小区的配置以及所述指示信息，以供用户设备确定满足对应的切换条件的候选小区为目标小区，或者发送切换命令使用户设备获知目标小区，并进行小区切换，根据所述指示信息确定保存除所述目标小区之外其他候选小区的配置。
本发明实施例还公开了一种存储介质，其上存储有计算机程序，所述计算机程序被处理器运行时执行所述小区切换方法的步骤。
本发明实施例还公开了一种用户设备，包括存储器和处理器，所述存储器上存储有可在所述处理器上运行的计算机程序，所述处理器运行所述计算机程序时执行所述小区切换方法的步骤。
本发明实施例还公开了一种基站设备，包括存储器和处理器，所述存储器上存储有可在所述处理器上运行的计算机程序，所述处理器运行所述计算机程序时执行所述小区切换方法的步骤。
与现有技术相比，本发明实施例的技术方案具有以下有益效果：
本发明技术方案中，用户设备在接收候选小区的配置时一并指示信息，指示信息能够指示用户设备是否需要保存候选小区的配置，从而在用户设备在执行小区切换后，根据指示保存除所述目标小区之外其他候选小区的配置，使得在后续需要小区切换时，无需网络侧重新配置候选小区，用户设备直接根据保存的候选小区的配置执行小区切换，减少信令开销，有效提升频谱效率。
进一步地，确定所述用户设备的历史服务小区中与所述用户设备的接入次数达到预设门限的第一小区；在所述指示信息中指示保存所述第一小区的配置。本发明技术方案中，根据用户设备的接入次数能够确定用户设备经常使用的小区，也即用户设备通常移动的小区范围，在这种情况下，可以为用户设备配置指示保存上述小区的配置，以便于用户设备在切换至该小区时能够及时获取到该小区的配置。
附图说明
图1是本发明实施例一种小区切换方法的流程图；
图2是本发明实施例另一种小区切换方法的流程图；
图3是本发明实施例一种具体场景下小区切换方法的具体示意图；
图4是本发明实施例一种小区切换装置的结构示意图；
图5是本发明实施例另一种小区切换装置的结构示意图。
具体实施方式
如背景技术中所述，按照现有的条件切换机制，当UE切换到目标小区之后，UE需要删除保存的其他候选小区配置，每次切换都要重新配置候选小区。此外，在非授权频谱部署，切换信令可能不能及时送到UE，导致切换失败。
本申请发明人研究发现，对于新引入的接入点，比如部署在家庭或公司，可能部署在非授权频谱，包含多个相邻的服务小区，UE通常总是在这几个小区中移动。当UE采用条件切换机制并实施切换之后，没有必要释放保存的候选小区配置，因为UE之后还是很可能在这几个小区之间实施切换，因此可以考虑增强现有的条件更新机制，以便UE能够充分利用网络配置的候选小区配置。
本发明技术方案中，用户设备在接收候选小区的配置时一并获得指示信息，指示信息能够指示用户设备是否需要保存候选小区的配置，从而在用户设备在执行小区切换后，根据指示保存除所述目标小区之外其他候选小区的配置，使得在后续需要小区条件切换中，无需网络侧重新配置候选小区，用户设备直接根据保存的候选小区的配置执行小区切换，减少信令开销，有效提升频谱效率。
进一步地，本发明技术方案中，根据用户设备的接入次数能够确定用户设备经常使用的小区，也即用户设备通常移动的小区范围，在这种情况下，可以为用户设备配置指示保存上述小区的配置，以便于用户设备在切换至该小区时能够及时利用保存的该小区配置实施接入。
本方明技术方案可适用于5G(5Generation)通信系统，还可适用于4G、3G通信系统，还可适用于未来新的各种通信系统，例如6G、7G等。
为使本发明的上述目的、特征和优点能够更为明显易懂，下面结合附图对本发明的具体实施例做详细的说明。
图1是本发明实施例一种小区切换方法的流程图。
本发明实施例中，所述小区切换方法可以用于用户设备侧，也即可以由用户设备执行所述方法的各个步骤。所述用户设备可以是各种适当的终端设备，例如手机、计算机、平板电脑等。与所述用户设备进行交互的基站设备可以是传统通信网络中的基站，也可以是能够提供基站功能的接入点设备等，本发明实施例对此不作限制。
具体而言，所述小区切换方法可以包括以下步骤：
步骤S101：接收候选小区的配置以及指示信息；
步骤S102：确定满足对应的切换条件的候选小区为目标小区，或者接收传统切换命令获知目标小区，并进行小区切换；
步骤S103：根据所述指示信息确定保存除所述目标小区之外其他候选小区的配置。
需要指出的是，本实施例中各个步骤的序号并不代表对各个步骤的执行顺序的限定。
基站设备，如传统基站或接入点设备，在家庭或公司提供无线服务，通常为了实现覆盖，可能部署多个服务小区。在本实施例中，基站设备可以包含4个服务小区：Cell1、Cell2、Cell3和Cell4，可以是每个基站设备服务一个小区，或者一个基站设备服务多个小区。UE接入Cell1处于连接状态。因为UE的移动，基站设备为UE配置了条件切换机制，可以包含其他3个候选小区的配置。
在步骤S101的具体实施中，基站设备在向用户设备发送候选小区的配置时一并发送指示信息，指示信息能够指示用户设备在实施切换之后是否保存候选小区的配置。具体地，发送候选小区的配置的信令可以是条件切换命令，例如可以是无线资源控制(Radio Resource  Control,RRC)信令。
具体而言，候选小区的配置可以包括候选小区的标识以及候选小区对应的切换条件(即切换执行条件)。不同候选小区对应的切换执行条件可以相同或不同。
在步骤S102的具体实施中，用户设备可以评估各个候选小区是否满足切换条件，例如判断候选小区的信号质量是否比服务小区的信号质量高预定的偏移量。如果候选小区满足切换条件，UE则将该候选小区作为目标小区进行接入。具体而言，UE可以利用该候选小区的配置中的相关参数完成接入，与目标小区取得同步，在目标小区发起随机接入流程，在完成RRC重配置之后。UE实现切换到目标小区。
UE在对候选小区进行评估时，可能收到基站设备发送的传统切换命令，此时传统切换命令中包含目标小区，则UE按照切换命令中的目标小区执行切换。此外，传统切换命令中也可以包含指示信息，如可以更新指示信息或新设指示信息。当UE在步骤S101中仅接收到候选小区配置而没有目标小区时，UE可以从传统切换命令中获得指示信息。
需要说明的是，关于小区切换的更多具体实施方式可参照现有技术，本发明实施例在此不再赘述。
在步骤S103的具体实施中，UE根据指示信息确定保存除所述目标小区之外其他候选小区的配置。其中，保存的候选小区的配置用于后续的条件切换。也就是说，通过保存候选小区的配置，可以在后续切换时及时获取到候选小区的配置，也即简化了后续小区切换流程。
例如，基站设备为UE配置了三个候选小区Cell2、Cell3和Cell4，UE从Cell1切换到Cell2后，剩余的候选小区(也即其他候选小区)为Cell3和Cell4，UE根据基站的指示确定保存Cell3和Cell4的配置。
在本发明一个非限制性的实施例中，所述小区切换方法还可以包括以下步骤：根据已保存的候选小区的配置判断是否存在满足对应切 换条件的候选小区；如果存在满足对应的切换条件的候选小区，则直接确定该候选小区为目标小区，并进行小区切换。
相对于现有技术中每次切换均需要通过切换命令配置候选小区，本发明技术方案能够在后续的条件切换时，无需网络侧重新配置候选小区，用户设备直接根据保存的候选小区的配置执行小区切换，减少信令开销，有效提升频谱效率。
在本发明一个非限制性的实施例中，在接收所述候选小区的配置的同时接收所述指示信息，所述候选小区的配置与所述指示信息携带于同一信令中。
本实施例中，通过复用发送候选小区的配置的信令来发送指示信息，不会增加信令开销。
在本发明一个非限制性的实施例中，所述指示信息为针对每一候选小区的独立信元，所述指示信息指示是否保存该候选小区的配置。
具体实施中，基站设备在配置针对每一候选小区的独立信元时，可以是发现UE通常在这几个候选小区中移动，因此基站设备可以指示UE在切换之后不必释放这几个候选小区的配置。
具体地，所述独立信元可以是RRC信令中的新增比特，例如，如果比特值为1，则表示保存；反之，如果比特值为0，则表示不保存。对于每一个候选小区，均对应一个新增比特。
相应地，如果针对所述其他候选小区的独立信元均指示保存，则保存所述其他候选小区的配置。例如，基站设备通过独立的信元指示切换之后保存候选小区Cell2、Cell3和Cell4的配置；UE从Cell1切换到Cell2后，UE根据独立信元的指示确定保存Cell3和Cell4的配置。
在本发明一个非限制性的实施例中，所述指示信息包括有效区域。
具体实施中，所述有效区域包括小区列表或追踪区域列表。
相应地，判断所述目标小区或所述其他候选小区是否属于所述有效区域；如果是，则保存所述其他候选小区的配置。也就是说，如果目标小区或所述其他候选小区属于所述有效区域，表示上述小区对应的网络侧保存有该UE的上下文；那么UE通过保存上述小区的配置，可以在后续条件切换时直接按照候选小区的配置进行切换评估，无需进行源基站和目标基站之间的交互，节省信令开销。
具体实施中，UE在切换之后，依据切换之后的目标小区，是否属于基站设备配置的有效区域，判断是否保存相应候选小区配置。例如，有效区域可以是Cell1、Cell2、Cell3和Cell4，当UE切换到Cell2，UE发现新的服务小区属于有效区域，因此UE保存其他候选小区(Cell3和Cell4)的配置。
相应地，如果UE切换到其他不属于有效区域配置的目标小区，UE在切换之后释放候选小区的配置。
本实施例中，UE可能继续移动，例如，移动到小区Cell3的边界，UE可以利用保存的小区Cell3的配置以及对应的切换条件，判断小区Cell3是否满足切换条件，如果满足可以实施切换。通过本实施例所述方法，可以通过较少的信令开销实现UE在多个小区之间的移动，可以有效提升频谱效率。
在本发明一个非限制性的实施例中，UE除了保存其他候选小区的配置，还可以将切换前的源服务小区的配置作为候选小区的配置进行保存。
在本发明一个非限制性的实施例中，请参照图2，所述小区切换方法可以用于基站设备侧，也即可以由基站设备执行所述方法的各个步骤。所述基站设备可以是传统通信网络中的基站，也可以是能够提供基站功能的接入点设备等，本发明实施例对此不作限制。
具体而言，小区切换方法可以包括以下步骤：
步骤S201：确定候选小区的配置以及指示信息；
步骤S202：发送所述候选小区的配置以及所述指示信息，以供用户设备确定满足对应的切换条件的候选小区为目标小区，或者发送切换命令向用户设备指示目标小区，以供所述用户设备进行小区切换，根据所述指示信息确定保存除所述目标小区之外其他候选小区的配置。
进一步地，所述步骤S201可以包括以下步骤：依据所述用户设备的历史访问信息确定所述用户设备接入第一小区的次数达到预设门限；在所述指示信息中指示保存所述第一小区的配置。
本发明实施例中，UE的历史访问信息记录有UE接入的各个小区的信息，基站设备是将与所述用户设备的接入次数达到预设门限的第一小区配置为需要保存，也即将UE经常接入的小区配置为需要保存，以避免UE侧保存大量不必要的小区配置，节省UE的存储空间。
在一个可选实施例中，基站设备通常在一个特定的区域内提供网络服务，例如接入点通常在家庭或公司提供无线服务，且基站设备可以包括多个服务小区。UE则具有相应的身份，例如公司员工，与该基站设备以及该基站设备的服务小区之间具有绑定关系。那么基站设备可以根据用户设备的标识及其绑定的服务小区确定第二小区的标识，第二小区为需要保存的候选小区，并在所述指示信息中指示保存所述第二小区的配置。例如，对于UE1，其与公司接入点包含的小区Cell1、Cell2、Cell3和Cell4相绑定，那么接入点可以为UE1配置保存Cell1、Cell2、Cell3和Cell4的配置。
在本发明一个具体应用场景中，请参照图3，图3示出了一种具体的小区切换方法的流程。
在步骤S301中，源基站302向目标基站303发送切换请求。
在步骤S302中，目标基站303向源基站302发送切换请求确认。
在步骤S303中，源基站302向UE301发送切换命令。其中，切 换命令包括各个候选小区的配置以及指示信息。
在步骤S304中，UE301判断候选小区是否满足对应的切换条件，如果是，则进行小区切换。
在步骤S305中，根据指示信息确定保存除目标小区之外其他候选小区的配置。
在步骤S306中，UE301向目标基站303发起随机接入。
后续步骤中，UE301与目标基站303完成RRC重配置，UE301完成目标小区的切换。
需要说明的是，上述步骤S301至步骤S306是在UE301未保存候选小区之前所执行的小区切换流程。在UE301保存候选小区的配置之后，如果需要执行小区切换流程，则可以节省上述步骤S301、步骤S302以及步骤S303。由此可以看出，本发明实施例能够通过较少的信令开销实现UE在多个小区之间的移动。
请参照图4，本发明实施例还公开了一种小区切换装置40，小区切换装置40可以包括：
接收模块401，用于接收候选小区的配置以及指示信息；
切换模块402，用于确定满足对应的切换条件的候选小区为目标小区，或者接收切换命令获知目标小区，并进行小区切换；
保存模块403，用于根据所述指示信息确定保存除所述目标小区之外其他候选小区的配置。
本发明实施例在执行小区切换后，根据指示保存除所述目标小区之外其他候选小区的配置，使得在后续需要依据条件切换实施小区切换时，无需网络侧重新配置候选小区，用户设备直接根据保存的候选小区的配置执行小区切换，减少信令开销，有效提升频谱效率。
请参照图5，本发明实施例还公开了一种小区切换装置50，小区 切换装置50可以包括：
配置模块501，用于确定候选小区的配置以及指示信息；
发送模块502，用于发送所述候选小区的配置以及所述指示信息，以供用户设备确定满足对应的切换条件的候选小区为目标小区，或者发送传统切换命令以使用户设备确定目标小区，并进行小区切换，根据所述指示信息确定保存除所述目标小区之外其他候选小区的配置。
进一步地，配置模块501可以包括：第一小区确定单元(图未示)，用于依据所述用户设备的历史访问信息确定所述用户设备接入第一小区的次数达到预设门限；配置单元(图未示)，用于在所述指示信息中指示保存所述第一小区的配置。
关于所述小区切换装置40以及小区切换装置50的工作原理、工作方式的更多内容，可以参照图1至图3中的相关描述，这里不再赘述。
所述小区切换装置40以及小区切换装置50(虚拟装置)例如可以是：芯片、或者芯片模组等。
关于上述实施例中描述的各个装置、产品包含的各个模块/单元，其可以是软件模块/单元，也可以是硬件模块/单元，或者也可以部分是软件模块/单元，部分是硬件模块/单元。例如，对于应用于或集成于芯片的各个装置、产品，其包含的各个模块/单元可以都采用电路等硬件的方式实现，或者，至少部分模块/单元可以采用软件程序的方式实现，该软件程序运行于芯片内部集成的处理器，剩余的(如果有)部分模块/单元可以采用电路等硬件方式实现；对于应用于或集成于芯片模组的各个装置、产品，其包含的各个模块/单元可以都采用电路等硬件的方式实现，不同的模块/单元可以位于芯片模组的同一组件(例如芯片、电路模块等)或者不同组件中，或者，至少部分模块/单元可以采用软件程序的方式实现，该软件程序运行于芯片模组内部集成的处理器，剩余的(如果有)部分模块/单元可以采用电 路等硬件方式实现；对于应用于或集成于终端的各个装置、产品，其包含的各个模块/单元可以都采用电路等硬件的方式实现，不同的模块/单元可以位于终端内同一组件(例如，芯片、电路模块等)或者不同组件中，或者，至少部分模块/单元可以采用软件程序的方式实现，该软件程序运行于终端内部集成的处理器，剩余的(如果有)部分模块/单元可以采用电路等硬件方式实现。
本发明实施例还公开了一种存储介质，所述存储介质为计算机可读存储介质，其上存储有计算机程序，所述计算机程序运行时可以执行图1至图3中所示小区切换方法的步骤。所述存储介质可以包括ROM、RAM、磁盘或光盘等。所述存储介质还可以包括非挥发性存储器(non-volatile)或者非瞬态(non-transitory)存储器等。
本发明实施例还公开了一种用户设备，所述用户设备可以包括存储器和处理器，所述存储器上存储有可在所述处理器上运行的计算机程序。所述处理器运行所述计算机程序时可以执行图1、图3中所示小区切换方法的步骤。所述用户设备包括但不限于手机、计算机、平板电脑等终端设备。
本发明实施例还公开了一种基站设备，所述基站设备可以包括存储器和处理器，所述存储器上存储有可在所述处理器上运行的计算机程序。所述处理器运行所述计算机程序时可以执行图2、图3中所示小区切换方法的步骤。
本方明技术方案也适用于不同的网络架构，包括但不限于中继网络架构、双链接架构、Vehicle-to-Everything(车辆到任何物体的通信)架构等架构。
本申请实施例中所述核心网可以是演进型分组核心网(evolved packet core，简称EPC)、5G Core Network(5G核心网)，还可以是未来通信系统中的新型核心网。5G Core Network由一组设备组成，并实现移动性管理等功能的接入和移动性管理功能(Access and Mobility Management Function，AMF)、提供数据包路由转发和QoS (Quality of Service)管理等功能的用户面功能(User Plane Function,UPF)、提供会话管理、IP地址分配和管理等功能的会话管理功能(Session Management Function，SMF)等。EPC可由提供移动性管理、网关选择等功能的MME、提供数据包转发等功能的Serving Gateway(S-GW)、提供终端地址分配、速率控制等功能的PDN Gateway(P-GW)组成。
本申请实施例中的基站(base station，简称BS)，也可称为基站设备，是一种部署在无线接入网(RAN)用以提供无线通信功能的装置。例如在2G网络中提供基站功能的设备包括基地无线收发站(英文：base transceiver station,简称BTS)，3G网络中提供基站功能的设备包括节点B(NodeB)，在4G网络中提供基站功能的设备包括演进的节点B(evolved NodeB，eNB)，在无线局域网络(wireless local area networks，简称WLAN)中，提供基站功能的设备为接入点(access point，简称AP)，5G新无线(New Radio，简称NR)中的提供基站功能的设备gNB,以及继续演进的节点B(ng-eNB)，其中gNB和终端之间采用NR技术进行通信，ng-eNB和终端之间采用E-UTRA(Evolved Universal Terrestrial Radio Access)技术进行通信，gNB和ng-eNB均可连接到5G核心网。本申请实施例中的基站还包含在未来新的通信系统中提供基站功能的设备等。
本申请实施例中的基站控制器，是一种管理基站的装置，例如2G网络中的基站控制器(base station controller，简称BSC)、3G网络中的无线网络控制器(radio network controller，简称RNC)、还可指未来新的通信系统中控制管理基站的装置。
本发明实施例中的网络侧network是指为终端提供通信服务的通信网络，包含无线接入网的基站，还可以包含无线接入网的基站控制器，还可以包含核心网侧的设备。
本申请实施例中的终端可以指各种形式的用户设备(user equipment，简称UE)、接入终端、用户单元、用户站、移动站、移 动台(mobile station，建成MS)、远方站、远程终端、移动设备、用户终端、终端设备(terminal equipment)、无线通信设备、用户代理或用户装置。终端设备还可以是蜂窝电话、无绳电话、会话启动协议(Session Initiation Protocol，简称SIP)电话、无线本地环路(Wireless Local Loop，简称WLL)站、个人数字处理(Personal Digital Assistant，简称PDA)、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，未来5G网络中的终端设备或者未来演进的公用陆地移动通信网络(Public Land Mobile Network，简称PLMN)中的终端设备等，本申请实施例对此并不限定。
本申请实施例定义接入网到终端的单向通信链路为下行链路，在下行链路上传输的数据为下行数据，下行数据的传输方向称为下行方向；而终端到接入网的单向通信链路为上行链路，在上行链路上传输的数据为上行数据，上行数据的传输方向称为上行方向。
应理解，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“/“，表示前后关联对象是一种“或”的关系。
本申请实施例中出现的“多个”是指两个或两个以上。
本申请实施例中出现的第一、第二等描述，仅作示意与区分描述对象之用，没有次序之分，也不表示本申请实施例中对设备个数的特别限定，不能构成对本申请实施例的任何限制。
本申请实施例中出现的“连接”是指直接连接或者间接连接等各种连接方式，以实现设备间的通信，本申请实施例对此不做任何限定。
应理解，本申请实施例中，所述处理器可以为中央处理单元(central processing unit，简称CPU)，该处理器还可以是其他通用处理器、数字信号处理器(digital signal processor，简称DSP)、专用集 成电路(application specific integrated circuit，简称ASIC)、现成可编程门阵列(field programmable gate array，简称FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
还应理解，本申请实施例中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，简称ROM)、可编程只读存储器(programmable ROM，简称PROM)、可擦除可编程只读存储器(erasable PROM，简称EPROM)、电可擦除可编程只读存储器(electrically EPROM，简称EEPROM)或闪存。易失性存储器可以是随机存取存储器(random access memory，简称RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的随机存取存储器(random access memory，简称RAM)可用，例如静态随机存取存储器(static RAM，简称SRAM)、动态随机存取存储器(DRAM)、同步动态随机存取存储器(synchronous DRAM，简称SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM，简称DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM，简称ESDRAM)、同步连接动态随机存取存储器(synchlink DRAM，简称SLDRAM)和直接内存总线随机存取存储器(direct rambus RAM，简称DR RAM)。
上述实施例，可以全部或部分地通过软件、硬件、固件或其他任意组合来实现。当使用软件实现时，上述实施例可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令或计算机程序。在计算机上加载或执行所述计算机指令或计算机程序时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以为通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或 数据中心通过有线或无线方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集合的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质(例如，软盘、硬盘、磁带)、光介质(例如，DVD)、或者半导体介质。半导体介质可以是固态硬盘。
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。
在本申请所提供的几个实施例中，应该理解到，所揭露的方法、装置和系统，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的；例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式；例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本发明各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理包括，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用硬件加软件功能单元的形式实现。
上述以软件功能单元的形式实现的集成的单元，可以存储在一个计算机可读取存储介质中。上述软件功能单元存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服 务器，或者网络设备等)执行本发明各个实施例所述方法的部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，简称ROM)、随机存取存储器(Random Access Memory，简称RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
虽然本发明披露如上，但本发明并非限定于此。任何本领域技术人员，在不脱离本发明的精神和范围内，均可作各种更动与修改，因此本发明的保护范围应当以权利要求所限定的范围为准。

Claims (16)

  1. 一种小区切换方法，其特征在于，包括：
    接收候选小区的配置以及指示信息；
    确定满足对应的切换条件的候选小区为目标小区，或者接收切换命令获知目标小区，并进行小区切换；
    根据所述指示信息确定保存除所述目标小区之外其他候选小区的配置，保存的候选小区的配置用于后续的条件切换。
  2. 根据权利要求1所述的小区切换方法，其特征在于，所述接收来自基站设备的候选小区的配置以及指示信息包括：
    在接收所述候选小区的配置的同时接收所述指示信息，所述候选小区的配置与所述指示信息携带于同一信令中。
  3. 根据权利要求1所述的小区切换方法，其特征在于，所述指示信息为针对每一候选小区的独立信元，所述指示信息指示是否保存该候选小区的配置。
  4. 根据权利要求3所述的小区切换方法，其特征在于，所述根据所述指示信息确定保存除所述目标小区之外其他候选小区的配置包括：
    如果针对所述其他候选小区的独立信元均指示保存，则保存所述其他候选小区的配置。
  5. 根据权利要求1所述的小区切换方法，其特征在于，所述指示信息包括有效区域。
  6. 根据权利要求5所述的小区切换方法，其特征在于，所述有效区域包括小区列表或追踪区域列表。
  7. 根据权利要求5所述的小区切换方法，其特征在于，所述根据所述指示信息确定保存除所述目标小区之外其他候选小区的配置包 括：
    判断所述目标小区或所述其他候选小区是否属于所述有效区域；
    如果是，则保存所述其他候选小区的配置。
  8. 根据权利要求1所述的小区切换方法，其特征在于，还包括：
    将切换前的源服务小区的配置作为候选小区的配置进行保存。
  9. 根据权利要求1所述的小区切换方法，其特征在于，还包括：
    根据已保存的候选小区的配置判断是否存在满足对应切换条件的候选小区；
    如果存在满足对应的切换条件的候选小区，则直接确定该候选小区为目标小区，并进行小区切换。
  10. 一种小区切换方法，其特征在于，包括：
    确定候选小区的配置以及指示信息；
    发送所述候选小区的配置以及所述指示信息，以供用户设备确定满足对应的切换条件的候选小区为目标小区，或者发送切换命令向用户设备指示目标小区；以供所述用户设备进行小区切换，并根据所述指示信息确定保存除所述目标小区之外其他候选小区的配置。
  11. 根据权利要求10所述的小区切换方法，其特征在于，所述确定指示信息包括：
    依据所述用户设备的历史访问信息确定所述用户设备接入第一小区的次数达到预设门限；
    在所述指示信息中指示保存所述第一小区的配置。
  12. 一种小区切换装置，其特征在于，包括：
    接收模块，用于接收候选小区的配置以及指示信息；
    切换模块，用于确定满足对应的切换条件的候选小区为目标小区，或者接收切换命令获知目标小区，并进行小区切换；
    保存模块，用于根据所述指示信息确定保存除所述目标小区之外其他候选小区的配置。
  13. 一种小区切换装置，其特征在于，包括：
    配置模块，用于确定候选小区的配置以及指示信息；
    发送模块，用于发送所述候选小区的配置以及所述指示信息，以供用户设备确定满足对应的切换条件的候选小区为目标小区，或者发送切换命令向用户设备指示目标小区，以供所述用户设备进行小区切换，并根据所述指示信息确定保存除所述目标小区之外其他候选小区的配置。
  14. 一种存储介质，其上存储有计算机程序，其特征在于，所述计算机程序被处理器运行时执行权利要求1至11中任一项所述小区切换方法的步骤。
  15. 一种用户设备，包括存储器和处理器，所述存储器上存储有可在所述处理器上运行的计算机程序，其特征在于，所述处理器运行所述计算机程序时执行权利要求1至9中任一项所述小区切换方法的步骤。
  16. 一种基站设备，包括存储器和处理器，所述存储器上存储有可在所述处理器上运行的计算机程序，其特征在于，所述处理器运行所述计算机程序时执行权利要求10或11中所述小区切换方法的步骤。
PCT/CN2022/079634 2021-03-23 2022-03-08 小区切换方法及装置、存储介质、用户设备、基站设备 WO2022199371A1 (zh)

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