WO2024208239A1 - 小区选择方法及通信装置 - Google Patents

小区选择方法及通信装置 Download PDF

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Publication number
WO2024208239A1
WO2024208239A1 PCT/CN2024/085718 CN2024085718W WO2024208239A1 WO 2024208239 A1 WO2024208239 A1 WO 2024208239A1 CN 2024085718 W CN2024085718 W CN 2024085718W WO 2024208239 A1 WO2024208239 A1 WO 2024208239A1
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WIPO (PCT)
Prior art keywords
time service
candidate cells
request message
equal
query
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PCT/CN2024/085718
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English (en)
French (fr)
Inventor
李亚娟
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Beijing Ziguang Zhanrui Communication Technology Co Ltd
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Beijing Ziguang Zhanrui Communication Technology Co Ltd
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Publication of WO2024208239A1 publication Critical patent/WO2024208239A1/zh
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Ceased legal-status Critical Current

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Classifications

    • 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
    • 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
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • 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

Definitions

  • the present application relates to the field of communication technology, and in particular to a cell selection method and a communication device.
  • the source base station can determine the target cell for the terminal device to switch. Among them, the target cell after the terminal device switches and the source cell before the terminal device switches can be provided by the same base station or different base stations. The source base station can, for example, select the target cell based on factors such as the reference signal received power or load balancing measured by the terminal device. However, for services with time service requirements running on the terminal device, the target cell selected in this way may not meet the time service requirements of the service, resulting in service failure.
  • the embodiments of the present application provide a cell selection method and a communication device, which can ensure that the target cell after the network change can meet the time service requirements of the business, thereby reducing the impact of the network change on the business and improving the stability of the business.
  • the present application provides a cell selection method, which may include: sending a first query request message, the first query request message includes identification information of M candidate cells, the first query request message is used to request to query the time service information of the M candidate cells; M is an integer greater than or equal to 1; receiving a first query response message, the first query response message includes the time service information of N candidate cells; N is an integer greater than or equal to 1 and less than or equal to M. It can be seen that by querying the time service information of the candidate cells, it is convenient to select a cell whose time service parameters meet the time service requirements, which is conducive to reducing the impact of network changes on services and improving service stability.
  • the time service information of N candidate cells includes the time service results of the N candidate cells, and the time service result of the nth candidate cell is used to indicate whether the time service parameter of the nth candidate cell meets the time service requirement or does not meet the time service requirement; n is an integer greater than or equal to 1 and less than or equal to N. It can be seen that the time service information may include the time service result used to indicate that the time service parameter meets or does not meet the time service requirement, which is conducive to more quickly selecting a cell whose time service parameter meets the time service requirement and improving the efficiency of cell selection.
  • the method further includes: determining a target cell according to the time service information of the N candidate cells, wherein the time service parameters of the target cell meet the time service requirements. It can be seen that by selecting a target cell whose time service parameters meet the time service requirements according to the time service information of the candidate cells, it is possible to ensure that the target cell after the network transformation meets the time service requirements of the service, thereby ensuring the service quality of the service.
  • the method before sending the first query request message, further includes: receiving a first message, the first message including identification information of the M candidate cells. It can be seen that the first message is received so that the first query request message can be sent according to the first message.
  • the method further includes: sending a second message, wherein the second message includes identification information of the target cell. It can be seen that the second message is sent to facilitate cell switching.
  • the method before sending the first query request message, further includes: receiving a second query request message, the second query request message including identification information of K candidate cells, the second query request message being used to request querying time service information of the K candidate cells; K is an integer greater than or equal to 1. It can be seen that the second query request message is received so as to more flexibly query the time service information of the candidate cells according to the second query request message.
  • the method further includes: sending a second query response message, where the second query response message includes time service information of H candidate cells; H is an integer greater than or equal to 1 and less than or equal to N. It can be seen that the second query response message is sent to flexibly feedback the time service information of the candidate cells.
  • the second query request message further includes identification information of a time service criterion, where the time service criterion is used to indicate a time service requirement. It can be seen that the time service result of the candidate cell can be determined more specifically according to the identification information of the time service criterion.
  • the method further includes: determining the time service results of the N candidate cells according to the time service parameters and time service requirements of the N candidate cells.
  • the method further includes: receiving a third message, the third message including identification information of the target cell, and the time service parameter of the target cell meets the time service requirement. It can be seen that the third message is received to facilitate cell switching.
  • the third message further includes group identification information of the target cell.
  • the present application provides another cell selection method, which may include: receiving a query request message, the query request message includes identification information of M candidate cells, the query request message is used to request to query the time service information of the M candidate cells; M is an integer greater than or equal to 1; sending a query response message, the query response message includes the time service information of N candidate cells; N is an integer greater than or equal to 1 and less than or equal to M. It can be seen that by providing the time service information of the candidate cells, it is convenient to select a cell whose time service parameters meet the time service requirements, which is conducive to reducing the impact of network changes on services and improving service stability.
  • the time service information of N candidate cells includes the time service results of the N candidate cells, and the time service result of the nth candidate cell is used to indicate whether the time service parameter of the nth candidate cell meets the time service requirement or does not meet the time service requirement; n is an integer greater than or equal to 1 and less than or equal to N. It can be seen that the time service information may include the time service result used to indicate that the time service parameter meets or does not meet the time service requirement, which is conducive to more quickly selecting a cell whose time service parameter meets the time service requirement and improving the efficiency of cell selection.
  • the time service information of the N candidate cells includes the time service parameters of the N candidate cells. It can be seen that providing the time service parameters of the candidate cells is conducive to improving the flexibility of cell selection.
  • the time service parameter includes any one or more of a service quality parameter, a service area parameter, and a service time parameter.
  • the present application provides another cell selection method, which may include: sending a first request message, the first request message includes identification information of M candidate cells, the first request message is used to request to query the time service information of the M candidate cells; M is an integer greater than or equal to 1; receiving a first response message, the first response message includes the time service information of N candidate cells; N is an integer greater than or equal to 1 and less than or equal to M. It can be seen that by querying the candidate cells, The time service information of the selected cell is used to select a cell whose time service parameters meet the time service requirements. This helps to reduce the impact of network changes on the service and improve service stability.
  • the time service information of N candidate cells includes the time service results of the N candidate cells, and the time service result of the nth candidate cell is used to indicate whether the time service parameter of the nth candidate cell meets the time service requirement or does not meet the time service requirement; n is an integer greater than or equal to 1 and less than or equal to N. It can be seen that the time service information may include the time service result used to indicate that the time service parameter meets or does not meet the time service requirement, which is conducive to more quickly selecting a cell whose time service parameter meets the time service requirement and improving the efficiency of cell selection.
  • the method further includes: determining a target cell according to the time service information of the N candidate cells, wherein the time service parameters of the target cell meet the time service requirements. It can be seen that by selecting a target cell whose time service parameters meet the time service requirements according to the time service information of the candidate cells, it is possible to ensure that the target cell after the network transformation meets the time service requirements of the service, thereby ensuring the service quality of the service.
  • the first request message further includes identification information of a time service criterion, where the time service criterion is used to indicate a time service requirement. It can be seen that providing a time service criterion is conducive to improving the flexibility of cell selection.
  • the method further includes: sending a handover request message, wherein the handover request message includes identification information corresponding to the target cell. It can be seen that sending the handover request message facilitates cell handover.
  • the handover request message further includes group identification information of the target cell.
  • the present application provides a communication device, which includes a sending unit and a receiving unit, wherein the sending unit is used to send a first query request message, the first query request message includes identification information of M candidate cells, and the first query request message is used to request to query the time service information of the M candidate cells; M is an integer greater than or equal to 1; the receiving unit is used to receive a first query response message, the first query response message includes the time service information of N candidate cells; N is an integer greater than or equal to 1 and less than or equal to M.
  • the present application provides another communication device, which includes a sending unit and a receiving unit, wherein the receiving unit is used to receive a query request message, the query request message includes identification information of M candidate cells, and the query request message is used to request to query the time service information of the M candidate cells; M is an integer greater than or equal to 1; the sending unit is used to send a query response message, the query response message includes the time service information of N candidate cells; N is an integer greater than or equal to 1 and less than or equal to M.
  • the present application provides another communication device, which includes a sending unit and a receiving unit, wherein the sending unit is used to send a first request message, the first request message includes identification information of M candidate cells, and the first request message is used to request to query the time service information of the M candidate cells; M is an integer greater than or equal to 1; the receiving unit is used to receive a first response message, the first response message includes the time service information of N candidate cells; N is an integer greater than or equal to 1 and less than or equal to M.
  • the present application provides a communication device, comprising a processor, a memory, and a computer program or instructions stored in the memory, characterized in that the processor executes the computer program or instructions to implement the method as in the first aspect and any possible implementation thereof, or to implement the method as in the second aspect and any possible implementation thereof, or to implement the method as in the third aspect and any possible implementation thereof.
  • the present application provides a chip.
  • the chip is used to send a first query request message, the first query request message includes identification information of M candidate cells, and the first query request message is used to request to query the time service information of the M candidate cells; M is an integer greater than or equal to 1; receive a first query response message, The first query response message includes the time service information of N candidate cells; N is an integer greater than or equal to 1 and less than or equal to M.
  • the chip is used to receive a query request message, the query request message includes the identification information of M candidate cells, and the query request message is used to request to query the time service information of M candidate cells; M is an integer greater than or equal to 1; send a query response message, the query response message includes the time service information of N candidate cells; N is an integer greater than or equal to 1 and less than or equal to M.
  • the chip is used to send a first request message, the first request message includes the identification information of M candidate cells, and the first request message is used to request to query the time service information of M candidate cells; M is an integer greater than or equal to 1; receive a first response message, the first response message includes the time service information of N candidate cells; N is an integer greater than or equal to 1 and less than or equal to M.
  • the present application provides a computer-readable storage medium, which stores computer-readable instructions.
  • the computer-readable instructions When the computer-readable instructions are executed, the method in the first aspect and any possible implementation thereof is implemented, or the method in the second aspect and any possible implementation thereof is implemented, or the method in the third aspect and any possible implementation thereof is implemented.
  • the present application provides a computer program or a computer program product, including codes or instructions.
  • the computer executes the method as in the first aspect and any possible implementation thereof, or executes the method as in the second aspect and any possible implementation thereof, or executes the method as in the third aspect and any possible implementation thereof.
  • the present application provides a chip module, which includes a communication module, a power module, a storage module and a chip, wherein: the power module is used to provide power to the chip module; the storage module is used to store data and instructions; the communication module is used for internal communication within the chip module, or for the chip module to communicate with an external device; the chip is used to execute the method as in the first aspect and any possible implementation thereof, or execute the method as in the second aspect and any possible implementation thereof, or execute the method as in the third aspect and any possible implementation thereof.
  • FIG1 is a schematic diagram of a system architecture applied to an embodiment of the present application.
  • FIG2 is a schematic diagram of a switching process based on an Xn interface provided in an embodiment of the present application
  • FIG. 3 is a schematic diagram of a flow chart of a switching preparation phase based on an N2 interface provided in an embodiment of the present application;
  • FIG4 is a schematic diagram of a flow chart of a switching execution phase based on an N2 interface provided in an embodiment of the present application;
  • FIG5 is a schematic diagram of a flow chart of a cell selection method provided in an embodiment of the present application.
  • FIG6 is a flow chart of another cell selection method provided in an embodiment of the present application.
  • FIG7 is a flow chart of another cell selection method provided in an embodiment of the present application.
  • FIG8 is a schematic diagram of the structure of a communication device provided in an embodiment of the present application.
  • FIG9 is a schematic diagram of the structure of another communication device provided in an embodiment of the present application.
  • FIG. 10 is a schematic diagram of the structure of a chip module provided in an embodiment of the present application.
  • the words “first”, “second”, etc. are used to distinguish the same items or similar items with substantially the same functions and effects. Those skilled in the art will understand that the words “first”, “second”, etc. do not limit the quantity and execution order. And the words “first”, “second” and so on are not necessarily different.
  • “And/or” describes the association relationship of the associated objects, indicating that there can be three relationships. For example, A and/or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character “/" generally indicates that the associated objects are in an "or” relationship.
  • NR systems which can also be called fifth-generation (5G) systems; or can also be applied to sixth-generation (6G) systems, or seventh-generation (7G) systems, or other future communication systems.
  • 5G fifth-generation
  • 6G sixth-generation
  • 7G seventh-generation
  • the present application may be applied to the system architecture shown in FIG1.
  • the communication system shown in FIG1 may include a terminal device 102 and a network device 104. It should be noted that the number and form of devices shown in FIG1 are only used as examples and do not constitute a limitation on the embodiments of the present application. In actual applications, terminal devices and network devices of a number different from those shown in FIG1 may be included.
  • the terminal device 102 is a device with wireless transceiver functions, which can be called a terminal, user equipment (UE), mobile station (MS), mobile terminal (MT), access terminal equipment, Internet of Things terminal equipment, vehicle-mounted terminal equipment, industrial control terminal equipment, UE unit, UE station, mobile station, remote station, remote terminal equipment, mobile device, UE terminal equipment, wireless communication equipment, UE agent or UE device, etc.
  • the terminal device can be fixed or mobile. It should be noted that the terminal device can support at least one wireless communication technology, such as long time evolution (LTE), new radio (NR), wideband code division multiple access (WCDMA), etc.
  • LTE long time evolution
  • NR new radio
  • WCDMA wideband code division multiple access
  • the terminal device can be a mobile phone, a tablet computer, a desktop computer, a laptop computer, an all-in-one computer, a vehicle-mounted terminal, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical surgery, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, etc.
  • VR virtual reality
  • AR augmented reality
  • the present invention relates to wireless terminals in a city, wireless terminals in a smart home, cellular phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), handheld devices with wireless communication functions, computing devices or other processing devices connected to wireless modems, wearable devices, terminal devices in future mobile communication networks, or terminal devices in future evolving public mobile land networks (PLMNs).
  • the terminal device may also be a device with transceiver functions, such as a chip module.
  • the chip module may include a chip and may also include other discrete devices.
  • the embodiments of the present application do not limit the specific technology and specific device form adopted by the terminal device.
  • the network device 104 may be a device that provides wireless communication functions for the terminal device.
  • the network device may be an access network (AN) device or a satellite.
  • the AN device may be a radio access network (RAN) device.
  • the access network device may support at least one wireless communication technology, such as LTE, NR, WCDMA, etc.
  • the access network device includes but is not limited to: the next generation base station (gNB), evolved node B (eNB), wireless network
  • the network device may be a radio network controller (RNC), a node B (NB), a base station controller (BSC), a base transceiver station (BTS), a home base station (e.g., home evolved node B, or home node B, HNB), a baseband unit (BBU), a transmission and reception point (TRP), a transmitting point (TP), a mobile switching center, etc.
  • RNC radio network controller
  • NB node B
  • BSC base station controller
  • BTS base transceiver station
  • HNB home base station
  • BBU baseband unit
  • TRP transmission and reception point
  • TP transmitting point
  • mobile switching center etc.
  • the network device may also be a radio controller, a centralized unit (CU) and/or a distributed unit (DU) in a cloud radio access network (CRAN) scenario, or the access network device may be a relay station, an access point, a vehicle-mounted device, a wearable device, an access network device in future mobile communications, or an access network device in a future evolved PLMN, etc.
  • the network device may also be a device having a wireless communication function for a terminal device, such as a chip module.
  • the chip module may include a chip, and may also include other discrete devices.
  • the embodiments of the present application do not limit the specific technology and specific device form adopted by the network device.
  • the communication system described in the embodiment of the present application is for more clearly illustrating the technical solution of the embodiment of the present application, and does not constitute a limitation on the technical solution provided by the embodiment of the present application.
  • Those skilled in the art can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution provided in the embodiment of the present application is also applicable to similar technical problems.
  • base stations can provide UE with high-precision timing of the Uu port by broadcasting system information blocks (SIB), such as SIB9, or radio resource control (RRC) dedicated signaling, such as downlink (DL) information transmission (DLInformationTransfer) messages.
  • SIB system information blocks
  • RRC radio resource control
  • the SIB9 message may include the following fields:
  • timeinfoUTC - indicates the universal time (UTC) related information, corresponding to the end boundary of the SI window in which SIB9 is sent or the system frame number (SFN) boundary after it;
  • dayLightSavingTime - indicates whether and how daylight saving time is applied to obtain the local time
  • the network switching involved in the embodiment of the present application can be divided into switching based on the Xn interface and switching based on the N2 interface from the perspective of the switching process.
  • the Xn interface is the interface between the access network equipment and the access network equipment
  • the N2 interface is the interface between the access network equipment and the mobility management network element AMF.
  • FIG 2 is a schematic diagram of a switching process based on the Xn interface provided in an embodiment of the present application.
  • the switching process based on the Xn interface can be divided into a switching preparation phase and a switching execution phase.
  • the switching preparation phase mainly includes the source RAN sending a switching request message to the target RAN, and the target RAN confirms whether it can support the establishment of the bearer according to the specific situation, and replies to the source RAN, etc.
  • the switching execution phase mainly includes the source RAN sending a switching request message to the UE, and the UE switches to the target RAN according to the switching request message. After the switching is completed, the target RAN sends a notification message to the core network element to change the data transmission path, etc.
  • the switching process based on the N2 interface can also be divided into a switching preparation phase and a switching execution phase.
  • Figure 3 is a flow chart of a switching preparation phase based on the N2 interface provided in an embodiment of the present application.
  • the source RAN initiates a switching request message
  • the core network element interacts with the target RAN to confirm the bearer that can be switched
  • the session management function (SMF) network element/AMF network element will establish a protocol data unit (PDU) session on the target side and reply to the AMF network element after the establishment.
  • PDU protocol data unit
  • Figure 4 is a flow chart of a handover execution phase based on the N2 interface provided in an embodiment of the present application.
  • the AMF network element sends a handover command message to the source RAN to inform the source RAN that the handover preparation phase has been completed.
  • the source RAN can send a handover command to the UE to trigger the UE to execute the handover process to the target RAN.
  • the UE sends a handover confirmation message to the target RAN.
  • the subsequent process is that the target RAN interacts with the core network element to update the target side session and convert the data transmission path.
  • the contents of the time service parameters include: see Table 1 below.
  • FIG5 is a flowchart of a cell selection method provided in an embodiment of the present application, which may include but is not limited to the following steps:
  • a source RAN sends a first message to a source AMF network element.
  • the source AMF network element may receive the first message from the source RAN.
  • the source RAN may be understood as the RAN to which the UE is connected before the cell is switched, and the source AMF network element may be understood as the AMF network element that provides services to the UE before the cell is switched.
  • the first message may be a switching request message.
  • the first message may include identification information of M candidate cells, where M is an integer greater than or equal to 1.
  • the source AMF network element sends a first query request message to the time sensitive communication and time synchronization function (TSCTSF).
  • the TSCTSF network element may receive the query request message from the source AMF network element.
  • the first query request message may include identification information of the M candidate cells, and the first query request message may be used to request to query the time service information of the M candidate cells.
  • the first query request message may also include identification information of the candidate AMF network element.
  • the TSCTSF network element sends a first query response message to the source AMF network element.
  • the source AMF network element can receive the first query response message from the TSCTSF network element.
  • the TSCTSF network element can determine the time service information of the M candidate cells based on the identification information of the M candidate cells.
  • the first query response message sent by the TSCTSF network element to the source AMF network element may include the time service information of the N candidate cells, where N can be an integer greater than or equal to 1 and less than or equal to M.
  • N can be an integer greater than or equal to 1 and less than or equal to M.
  • the TSCTSF network element can select M candidate cells and send the time service information of the selected N candidate cells to the source AMF network element.
  • the N candidate cells can be candidate cells whose time service parameters meet the time service requirements selected by the TSCTSF network element from the M candidate cells.
  • the first query response message may further include tracking area (TA) information and/or candidate cell information.
  • the candidate cell information may include, for example, a cell global identifier (CGI) of the candidate cell, or a physical cell identifier (PCI) of the candidate cell, or resource configuration information of the candidate cell.
  • CGI cell global identifier
  • PCI physical cell identifier
  • the source AMF network element determines the target cell based on the time service information of N candidate cells.
  • the time service parameters of the target cell meet the time service requirements.
  • the time service information of N candidate cells may include the time service results of the N candidate cells, that is, the first query response message received by the source RAN from the source AMF network element may include the time service results of the N candidate cells.
  • the time service result of the nth candidate cell can be used to indicate whether the time service parameters of the nth candidate cell meet the time service requirements or do not meet the time service requirements, and n is an integer greater than or equal to 1 and less than or equal to N.
  • the source AMF network element can determine the target cell whose time service parameters meet the time service requirements based on the time service results of the N candidate cells.
  • the source AMF network element does not receive the first query response message from the TSCTSF network element within a preset time period, it can be assumed that the time service parameters of the nth candidate cell meet the time service requirements.
  • the time service information of the N candidate cells may include the time service parameters of the N candidate cells, that is, the query response message received by the source RAN from the source AMF network element may include the time service parameters of the N candidate cells.
  • the source AMF network element may determine the target cell whose time service parameters meet the time service requirements based on the time service parameters and time service requirements of the N candidate cells.
  • the time service parameters may include any one or more of the service quality parameters, service area parameters, and service time parameters.
  • the source AMF network element when the source AMF network element determines that there are multiple target cells whose time service parameters meet the time service requirements, the source AMF network element can select the switching target according to the signal quality of the multiple target cells, for example, the target cell with the best signal quality can be selected as the switching target.
  • the source AMF network element can also select the target cell with the highest residence frequency as the switching target based on the statistical information of the multiple target cells.
  • the source AMF network element can select the target AMF network element for switching.
  • the TSCTSF network element can determine the time service results of the M candidate cells and the AMF network elements corresponding to the M candidate cells.
  • the TSCTSF network element can send the time service results of N candidate cells and the AMF network elements corresponding to the N candidate cells to the source AMF network element.
  • the time service results of the N candidate cells and the AMF network elements corresponding to the N candidate cells can be configured in the source AMF network element in the form of a table, for example. In this way, after the source AMF network element determines the target cell, it can determine the target AMF network element corresponding to the target cell for switching based on the target cell.
  • the TSC TSF network element can determine the time service result of the candidate cell corresponding to the candidate AMF network element. Furthermore, the TSC TSF network element can send the time service result of the candidate cell corresponding to the candidate AMF network element to the source AMF network element. The source AMF network element can determine the target cell and the target AMF network element corresponding to the target cell based on the time service result of the candidate cell corresponding to the candidate AMF network element.
  • the TSC TSF network element can determine the time service result of the candidate cell corresponding to AMF1, as well as the time service result of the candidate cell corresponding to AMF2.
  • the time service result of the candidate cell corresponding to AMF1 indicates that the time service parameters of the candidate cell corresponding to AMF1 meet the time service requirements
  • the time service result of the candidate cell corresponding to AMF2 indicates that the time service parameters of the candidate cell corresponding to AMF2 do not meet the time service requirements
  • the source AMF network element sends a second message to the source RAN.
  • the source RAN can receive the second message from the source AMF network element.
  • the second message may include identification information of the target cell.
  • the second message may be a handover response message.
  • the second message may be used to indicate rejection of the handover and carry the rejection reason.
  • the second message may be a handover preparation failure message.
  • the source AMF network element can determine the target cell whose time service parameters meet the time service requirements based on the time service information of N candidate cells, ensuring that the target cell after the network transformation can meet the time service requirements of the service, thereby reducing the impact of the network transformation on the service and improving service stability.
  • FIG. 6 is a flowchart of another cell selection method provided in an embodiment of the present application, which may include but is not limited to the following steps:
  • the source RAN sends a first query request message to the source AMF network element.
  • the source AMF network element receives the first query request message from the source RAN.
  • the source RAN can be understood as the RAN to which the UE is connected before switching the cell
  • the source AMF network element can be understood as the AMF network element that provides services to the UE before switching the cell.
  • the first query request message may include identification information of M candidate cells, where M is an integer greater than or equal to 1.
  • the M candidate cells may be potential switching target cells determined by the source RAN.
  • the M candidate cells may be provided by the same RAN or by different RANs, or some of the M candidate cells may be provided by the same RAN and some by different RANs, which is not limited in this embodiment of the present application. It can be understood that the M candidate cells may also be provided by the same RAN or different RANs as the source cell before the UE switches.
  • the first query request message may also include identification information of the time service criterion, and the time service criterion may be used to indicate the time service requirement of the current service.
  • the identification information of the time service criterion may be, for example, an index value of the time service criterion.
  • the first query request message may also include the specific content of the time service criterion. Exemplarily, assuming that the UE is currently running a financial service A, and the time service requirement of the financial service A is a deviation of 1ms, then the first query request message may include the specific content of the time service criterion of service A, i.e., a deviation of 1ms.
  • the source AMF network element sends a second query request message to the TSCTSF network element.
  • the TSCTSF network element receives the second query request message from the source AMF network element.
  • the source AMF network element may send a second query request message to the TSCTSF network element, the second query request message may include identification information of M candidate cells, and the second query request message may be used to request querying time service information of the M candidate cells.
  • the TSCTSF network element may query and obtain the time service information of the M candidate cells based on the identification information of the M candidate cells.
  • the second query request message sent by the source AMF network element to the TSC TSF network element may also include identification information of the candidate AMF network element.
  • the TSCTSF network element sends a second query response message to the source AMF network element.
  • the source AMF network element receives the second query response message from the TSCTSF network element.
  • the TSCTSF network element may send a second query response message to the source AMF network element.
  • the second query response message may include time service information of K candidate cells, where K is an integer greater than or equal to 1 and less than or equal to M. When K is less than M, it means that the TSCTSF network element can select M candidate cells and send the time service information of the selected K candidate cells to the source AMF network element.
  • the K candidate cells can be the candidate cells whose time service information meets the time service requirements selected by the TSCTSF network element from the M candidate cells.
  • the second query response message may further include tracking area (TA) information and/or candidate cell information.
  • the candidate cell information may include, for example, a cell global identifier (CGI) of the candidate cell, or a physical cell identifier (PCI) of the candidate cell, or resource configuration information of the candidate cell.
  • CGI cell global identifier
  • PCI physical cell identifier
  • the source AMF network element sends a first query response message to the source RAN.
  • the source AMF network element receives the first query response message from the source AMF network element.
  • the source AMF network element When the source AMF network element receives the second query response message from the TSC TSF network element, it can send a first query response message to the source RAN.
  • the first query response message can include the time service information of N candidate cells, where N can be an integer greater than or equal to 1 and less than or equal to K.
  • N When N is an integer less than K, it means that the source AMF network element can select K candidate cells and send the time service information of the selected N candidate cells to the source RAN.
  • the N candidate cells can be candidate cells whose time service information meets the time service requirements selected by the source AMF network element from the K candidate cells.
  • the source RAN determines a target cell according to the time service information of the N candidate cells.
  • the time service parameters of the target cell meet the time service requirements of the current business.
  • the time service information of N candidate cells may include the time service results of the N candidate cells, that is, the first query response message received by the source RAN from the source AMF network element may include the time service results of the N candidate cells.
  • the time service result of the nth candidate cell can be used to indicate that the time service parameters of the nth candidate cell meet the time service requirements or do not meet the time service requirements of the current service, and n is an integer greater than or equal to 1 and less than or equal to N.
  • the source RAN can determine the target cell whose time service parameters meet the time service requirements of the current service.
  • the source RAN does not receive the first query response message from the source AMF network element within a preset time period, it can be assumed that the time service parameters of the nth candidate cell meet the time service requirements of the current service.
  • the time service results of the N candidate cells may be determined by the source AMF network element according to the time service requirements of the current service and the time service parameters of the N candidate cells provided by the TSCTSF network element.
  • the time service results of the N candidate cells may also be determined by the TSCTSF network element according to the time service requirements of the current service and the time service parameters of the N candidate cells.
  • the time service information of the N candidate cells may include the time service parameters of the N candidate cells, that is, the first query response message received by the source RAN from the source AMF network element may include the time service parameters of the N candidate cells.
  • the source RAN may determine the target cell whose time service parameters meet the time service requirements of the current service based on the time service parameters of the N candidate cells and the time service requirements of the current service.
  • the time service parameters may include any one or more of the service quality parameters, the service area parameters, and the service time parameters.
  • the source RAN can send a switching request message to the source AMF network element.
  • the switching request message may include identification information of the target cell, and the time service parameters of the target cell meet the time service requirements of the current business.
  • the target cell may be a cell group
  • the handover request message may further include group identification information of the target cell
  • the source RAN can determine a target cell whose time service parameters meet the time service requirements of the current service based on the time service information of the N candidate cells, thereby ensuring that the target cell after the network transformation can meet the time service requirements of the service, thereby reducing the impact of the network transformation on the service and improving service stability.
  • FIG. 7 is a flowchart of another cell selection method provided in an embodiment of the present application, which may include but is not limited to the following steps:
  • a first RAN sends a first request message to a second RAN.
  • the second RAN receives the first request message from the first RAN.
  • the first RAN may be a source RAN, that is, a RAN to which the UE is connected before switching the cell.
  • the first request message may include identification information of multiple cells corresponding to the second RAN, and the first request message may be used to obtain time service information of multiple cells corresponding to the second RAN.
  • the first request message may include a time service requirement.
  • the second RAN may determine the time service information of multiple cells corresponding to the second RAN based on the identification information of the multiple cells corresponding to the second RAN and the time service requirement.
  • the first request message may also be a time service subscription message.
  • the first RAN may subscribe to the time service information of multiple cells corresponding to the second RAN, that is, when the time service information of multiple cells corresponding to the second RAN changes, the first RAN may receive the time service notification message.
  • the second RAN sends a first response message to the first RAN.
  • the first RAN receives the first response message from the second RAN.
  • the first response message may include time service information of multiple cells corresponding to the second RAN.
  • the service information of the multiple cells corresponding to the second RAN may include time service results of the multiple cells corresponding to the second RAN, and the time service result of the first cell among the multiple cells is used to indicate whether the time service parameter of the first cell meets the time service requirement or does not meet the time service requirement, and the first cell may be any one of the multiple cells corresponding to the second RAN.
  • the first RAN does not receive the first response message within a preset time, it may be assumed that the time service parameter of the first cell meets the time service requirement.
  • the service information of the multiple cells corresponding to the second RAN may include time service parameters of the multiple cells corresponding to the second RAN.
  • the time service parameters may include any one or more of service quality parameters, service area parameters, and service time parameters.
  • the first response message may be a time service notification message. If the first RAN receives the time service notification message, it indicates that time service information of multiple cells corresponding to the second RAN has changed.
  • the first RAN determines a target cell according to time service information of multiple cells corresponding to the second RAN.
  • the time service parameters of the target cell meet the time service requirements.
  • the time service information of the multiple cells corresponding to the second RAN may include time service results of the multiple cells corresponding to the second RAN, and the first RAN may determine a target cell whose time service parameters meet the time service requirements based on the time service results of the multiple cells corresponding to the second RAN.
  • the time service information of the multiple cells corresponding to the second RAN may include time service parameters of the multiple cells corresponding to the second RAN, and the first RAN may determine a target cell whose time service parameters meet the time service requirements based on the time service parameters and time service requirements of the multiple cells corresponding to the second RAN.
  • the first RAN determines the target cell, it can perform cell switching. It is understandable that if the second If the time service parameters of the multiple cells corresponding to the RAN do not meet the time service requirement, the first RAN may not perform cell switching.
  • the first RAN may determine a target cell whose time service parameters meet the time service requirements based on the time service information of multiple cells corresponding to the second RAN, thereby ensuring that the target cell after the network transformation can meet the time service requirements of the service, thereby reducing the impact of the network transformation on the service and improving service stability.
  • FIG. 8 is a schematic diagram of the structure of a communication device provided in an embodiment of the present application.
  • the communication device 80 includes a sending unit 801 and a receiving unit 802 .
  • the communication device 80 is an AMF network element or a device matching an AMF network element:
  • the sending unit 801 is used to send a first query request message, where the first query request message includes identification information of M candidate cells, and the first query request message is used to request to query time service information of the M candidate cells; M is an integer greater than or equal to 1;
  • the receiving unit 802 is configured to receive a first query response message, where the first query response message includes time service information of N candidate cells; N is an integer greater than or equal to 1 and less than or equal to M.
  • the time service information of N candidate cells includes time service results of N candidate cells, and the time service result of the nth candidate cell is used to indicate whether the time service parameters of the nth candidate cell meet the time service requirements or do not meet the time service requirements; n is an integer greater than or equal to 1 and less than or equal to N.
  • the communication device 80 may further include a processing unit 803, and the processing unit 803 is used to determine a target cell according to the time service information of the N candidate cells, and the time service parameters of the target cell meet the time service requirements.
  • the receiving unit 802 is further configured to receive a first message, where the first message includes identification information of M candidate cells.
  • the sending unit 801 is further configured to send a second message, where the second message includes identification information of the target cell.
  • the receiving unit 802 is further used to receive a second query request message, where the second query request message includes identification information of K candidate cells, and the second query request message is used to request to query time service information of the K candidate cells; K is an integer greater than or equal to 1.
  • the sending unit 801 is further configured to send a second query response message, where the second query response message includes time service information of H candidate cells; H is an integer greater than or equal to 1 and less than or equal to N.
  • the second query request message further includes identification information of a time service criterion, where the time service criterion is used to indicate a time service requirement.
  • the processing unit 803 is further configured to determine the time service results of the N candidate cells according to the time service parameters and time service requirements of the N candidate cells.
  • the receiving unit 802 is further configured to receive a third message, where the third message includes identification information of the target cell, and the time service parameters of the target cell meet the time service requirements.
  • the third message also includes group identification information of the target cell.
  • the communication device 80 is a TSCTSF network element or a device matching the TSCTSF network element:
  • the receiving unit 802 is used to receive a query request message, where the query request message includes identification information of M candidate cells, and the query request message is used to request to query the time service information of the M candidate cells; M is an integer greater than or equal to 1;
  • the sending unit 801 is used to send a query response message, which includes the time service information of N candidate cells.
  • Information is an integer greater than or equal to 1 and less than or equal to M.
  • the time service information of N candidate cells includes time service results of N candidate cells, and the time service result of the nth candidate cell is used to indicate whether the time service parameters of the nth candidate cell meet the time service requirements or do not meet the time service requirements; n is an integer greater than or equal to 1 and less than or equal to N.
  • the time service information of the N candidate cells includes time service parameters of the N candidate cells.
  • the time service parameters include any one or more of service quality parameters, service area parameters, and service time parameters.
  • the communication device 80 is a RAN or a device matching a RAN:
  • the sending unit 801 is used to send a first request message, where the first request message includes identification information of M candidate cells, and the first request message is used to request to query time service information of the M candidate cells; M is an integer greater than or equal to 1;
  • the receiving unit 802 is used to receive a first response message, where the first response message includes time service information of N candidate cells; N is an integer greater than or equal to 1 and less than or equal to M.
  • the time service information of N candidate cells includes time service results of N candidate cells, and the time service result of the nth candidate cell is used to indicate whether the time service parameters of the nth candidate cell meet the time service requirements or do not meet the time service requirements; n is an integer greater than or equal to 1 and less than or equal to N.
  • the processing unit 803 is configured to determine a target cell according to the time service information of the N candidate cells, and the time service parameters of the target cell meet the time service requirements.
  • the first request message also includes identification information of a time service criterion, where the time service criterion is used to indicate a time service requirement.
  • the sending unit 801 is further configured to send a handover request message, where the handover request message includes identification information corresponding to the target cell.
  • the handover request message also includes group identification information of the target cell.
  • the communication device 90 may include a transceiver 901 and a processor 902.
  • the communication device may also include a memory 903.
  • the transceiver 901, the processor 902, and the memory 903 may be connected via a bus 904 or other methods.
  • the bus is represented by a bold line in Figure 9, and the connection method between other components is only for schematic illustration and is not intended to be limiting.
  • the bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, only one bold line is used in Figure 9, but it does not mean that there is only one bus or one type of bus.
  • the coupling in the embodiment of the present application is an indirect coupling or communication connection between devices, units or modules, which can be electrical, mechanical or other forms, and is used for information exchange between devices, units or modules.
  • the specific connection medium between the above-mentioned transceiver 901, processor 902, and memory 903 is not limited in the embodiment of the present application.
  • the memory 903 may include a read-only memory and a random access memory, and provides instructions and data to the processor 902. A part of the memory 903 may also include a nonvolatile random access memory.
  • the processor 902 may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components.
  • the general processor may be a microprocessor, and optionally, the processor 902 may also be any conventional processor.
  • the memory 903 is used to store program instructions; the processor 902 is used to call the program instructions stored in the memory 903 to execute the steps performed by the source AMF network element in the corresponding embodiments of Figures 5-7.
  • the memory 903 is used to store program instructions; the processor 902 is used to call the program instructions stored in the memory 903 to execute the steps performed by the TSCTSF network element in the corresponding embodiments of Figures 5-7.
  • the memory 903 is used to store program instructions; the processor 902 is used to call the program instructions stored in the memory 903 to execute the steps executed by the source RAN in the embodiments corresponding to FIG. 5 to FIG. 7 .
  • the method provided in the embodiment of the present application can be implemented by running a computer program (including program code) capable of executing each step involved in the above method on a general computing device such as a computer including a CPU, a random access memory (RAM), a read-only memory (ROM) and other processing elements and storage elements.
  • the computer program can be recorded on a computer-readable recording medium, for example, and loaded into the above computing device through the computer-readable recording medium and run therein.
  • the aforementioned communication device may be, for example, a chip or a chip module.
  • An embodiment of the present application also provides a chip.
  • the chip is used to: send a first query request message, the first query request message includes identification information of M candidate cells, and the first query request message is used to request to query the time service information of the M candidate cells; M is an integer greater than or equal to 1; receive a first query response message, the first query response message includes the time service information of N candidate cells; N is an integer greater than or equal to 1 and less than or equal to M.
  • the time service information of N candidate cells includes time service results of N candidate cells, and the time service result of the nth candidate cell is used to indicate whether the time service parameters of the nth candidate cell meet the time service requirements or do not meet the time service requirements; n is an integer greater than or equal to 1 and less than or equal to N.
  • the chip may also be used to: determine a target cell according to the time service information of N candidate cells, and the time service parameters of the target cell meet the time service requirements.
  • the chip may also be used to: receive a first message, where the first message includes identification information of M candidate cells.
  • the chip may also be used to: send a second message, where the second message includes identification information of the target cell.
  • the chip can also be used to: receive a second query request message, the second query request message includes identification information of K candidate cells, and the second query request message is used to request to query time service information of the K candidate cells; K is an integer greater than or equal to 1.
  • the chip may also be used to: send a second query response message, where the second query response message includes time service information of H candidate cells; H is an integer greater than or equal to 1 and less than or equal to N.
  • the second query request message further includes identification information of a time service criterion, where the time service criterion is used to indicate a time service requirement.
  • the chip may also be used to determine the time service results of the N candidate cells according to the time service parameters and time service requirements of the N candidate cells.
  • the chip may also be used to: receive a third message, where the third message includes identification information of a target cell, and a time service parameter of the target cell meets the time service requirement.
  • the third message also includes group identification information of the target cell.
  • the chip is used to: receive a query request message, the query request message includes identification information of M candidate cells, the query request message is used to request query of time service information of M candidate cells; M is an integer greater than or equal to 1; send a query response message, the query response message includes time service information of N candidate cells; N is an integer greater than or equal to 1 and less than or equal to M.
  • the time service information of N candidate cells includes time service results of N candidate cells, and the time service result of the nth candidate cell is used to indicate whether the time service parameters of the nth candidate cell meet the time service requirements or do not meet the time service requirements; n is an integer greater than or equal to 1 and less than or equal to N.
  • the time service information of the N candidate cells includes time service parameters of the N candidate cells.
  • the time service parameters include any one or more of service quality parameters, service area parameters, and service time parameters.
  • the chip is used to: send a first request message, the first request message includes identification information of M candidate cells, and the first request message is used to request query of time service information of M candidate cells; M is an integer greater than or equal to 1; receive a first response message, the first response message includes time service information of N candidate cells; N is an integer greater than or equal to 1 and less than or equal to M.
  • the time service information of N candidate cells includes time service results of N candidate cells, and the time service result of the nth candidate cell is used to indicate whether the time service parameters of the nth candidate cell meet the time service requirements or do not meet the time service requirements; n is an integer greater than or equal to 1 and less than or equal to N.
  • the chip may also be used to: determine a target cell according to the time service information of N candidate cells, and the time service parameters of the target cell meet the time service requirements.
  • the first request message also includes identification information of a time service criterion, where the time service criterion is used to indicate a time service requirement.
  • the chip may also be used to: send a handover request message, where the handover request message includes identification information corresponding to the target cell.
  • the handover request message also includes group identification information of the target cell.
  • FIG10 is a schematic diagram of the structure of a chip module provided in an embodiment of the present application.
  • the chip module 100 can execute the relevant steps of the communication device 80 in the aforementioned method embodiment, and the chip module 100 includes: a communication interface 1001 and a chip 1002 .
  • the communication interface is used for internal communication of the chip module, or for the chip module to communicate with an external device; the chip is used to implement the function of the communication device in the embodiment of the present application, and specifically refer to the corresponding embodiments of Figures 5-7.
  • the chip module 100 may also include a storage module 1003 and a power module 1004.
  • the storage module 1003 is used to store data and instructions.
  • the power module 1004 is used to provide power to the chip module.
  • each module contained therein can adopt circuit Different modules may be located in the same component (e.g., chip, circuit module, etc.) or in different components of the chip module. Alternatively, at least some of the modules may be implemented in the form of a software program that runs on a processor integrated inside the chip module, and the remaining (if any) modules may be implemented in the form of hardware such as circuits.
  • An embodiment of the present application also provides a computer-readable storage medium, in which computer-readable instructions are stored. When the computer-readable instructions are executed, the method provided by the above method embodiment is implemented.
  • the embodiments of the present application also provide a computer program or a computer program product, including codes or instructions.
  • the codes or instructions are executed on a computer, the computer executes the method provided by the above method embodiments.
  • the various modules/units included in the various devices and products described in the above embodiments can be software modules/units, or hardware modules/units, or they can be partially software modules/units and partially hardware modules/units.
  • the various modules/units included therein can all be implemented in the form of hardware such as circuits, or at least some of the modules/units can be implemented in the form of software programs, which run on a processor integrated inside the chip, and the remaining (if any) modules/units can be implemented in the form of hardware such as circuits;
  • the various modules/units included therein can all be implemented in the form of hardware such as circuits, and different modules/units can be located in the same component (such as a chip, circuit module, etc.) or different components of the chip module, or at least some of the modules/units can be implemented in the form of hardware such as circuits.
  • the element can be implemented in the form of a software program, which runs on a processor integrated inside the chip module, and the remaining (if any) modules/units can be implemented in the form of hardware such as circuits; for various devices and products applied to or integrated in the terminal, the various modules/units contained therein can be implemented in the form of hardware such as circuits, and different modules/units can be located in the same component (for example, chip, circuit module, etc.) or in different components in the terminal, or, at least some modules/units can be implemented in the form of a software program, which runs on a processor integrated inside the terminal, and the remaining (if any) modules/units can be implemented in the form of hardware such as circuits.
  • the modules in the device of the embodiment of the present application can be merged, divided and deleted according to actual needs.
  • a person of ordinary skill in the art can understand that all or part of the steps in the various methods of the above embodiments can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable storage medium, which can include: a flash drive, ROM, RAM, a magnetic disk or an optical disk, etc.

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Abstract

本申请公开了一种小区选择方法及通信装置，该方法可包括：发送第一查询请求消息，第一查询请求消息包括M个候选小区的标识信息，第一查询请求消息用于请求查询M个候选小区的时间服务信息；M为大于或等于1的整数；接收第一查询响应消息，第一查询响应消息包括N个候选小区的时间服务信息；N为大于或等于1，小于或等于M的整数。采用本申请，可以确保网络变换后的目标小区能够满足业务的时间服务要求，从而降低网络变换对业务造成的影响，提升业务稳定性。

Description

小区选择方法及通信装置
本申请要求于2023年4月7日提交中国专利局、申请号为202310371554.1、申请名称为“小区选择方法及通信装置”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
本申请涉及通信技术领域，尤其涉及一种小区选择方法及通信装置。
背景技术
终端设备在移动的过程中，会涉及到网络切换，保证网络切换后终端设备上运行的业务不受影响是十分重要的。当终端设备接入的网络发生变换时，可以由源基站决定终端设备切换的目标小区。其中，终端设备切换之后目标小区与终端设备切换之前的源小区可以是同一个基站或者不同基站提供。源基站例如可以基于终端设备测量的参考信号接收功率或者负荷均衡等因素来选择目标小区。然而，对于终端设备上运行的具有时间服务要求的业务，通过这种方式选择的目标小区可能不满足业务的时间服务要求，进而导致业务失败。
发明内容
本申请实施例提供一种小区选择方法及通信装置，可以确保网络变换后的目标小区能够满足业务的时间服务要求，从而降低网络变换对业务造成的影响，提升业务稳定性。
第一方面，本申请提供一种小区选择方法，该方法可包括：发送第一查询请求消息，第一查询请求消息包括M个候选小区的标识信息，第一查询请求消息用于请求查询M个候选小区的时间服务信息；M为大于或等于1的整数；接收第一查询响应消息，第一查询响应消息包括N个候选小区的时间服务信息；N为大于或等于1，小于或等于M的整数。可见，通过查询候选小区的时间服务信息，以便于选择得到时间服务参数满足时间服务要求的小区，如此有利于降低网络变换对业务造成的影响，提升业务稳定性。
在一种可能的实现方式中，N个候选小区的时间服务信息包括N个候选小区的时间服务结果，第n个候选小区的时间服务结果用于指示第n个候选小区的时间服务参数满足时间服务要求或不满足时间服务要求；n为大于或等于1，小于或等于N的整数。可见，时间服务信息可以包括用于指示时间服务参数满足或不满足时间服务要求的时间服务结果，如此有利于更加快速地选择时间服务参数满足时间服务要求的小区，提升小区选择的效率。
在一种可能的实现方式中，上述方法还包括：根据N个候选小区的时间服务信息，确定目标小区，目标小区的时间服务参数满足时间服务要求。可见，根据候选小区的时间服务信息，选择时间服务参数满足时间服务要求的目标小区，能够确保网络变换后的目标小区满足业务的时间服务要求，从而保障业务的服务质量。
在一种可能的实现方式中，发送第一查询请求消息之前，上述方法还包括：接收第一消息，第一消息包括M个候选小区的标识信息。可见，接收第一消息，以便于能够根据第一消息发送第一查询请求消息。
在一种可能的实现方式中，上述方法还包括：发送第二消息，第二消息包括目标小区的标识信息。可见，发送第二消息，以便于进行小区切换。
在一种可能的实现方式中，发送第一查询请求消息之前，上述方法还包括：接收第二查询请求消息，第二查询请求消息包括K个候选小区的标识信息，第二查询请求消息用于请求查询K个候选小区的时间服务信息；K为大于或等于1的整数。可见，接收第二查询请求消息，以便于根据第二查询请求消息更加灵活地查询候选小区的时间服务信息。
在一种可能的实现方式中，接收第一查询响应消息之后，上述方法还包括：发送第二查询响应消息，第二查询响应消息包括H个候选小区的时间服务信息；H为大于或等于1，小于或等于N的整数。可见，发送第二查询响应消息，以便于灵活地反馈候选小区的时间服务信息。
在一种可能的实现方式中，第二查询请求消息还包括时间服务准则的标识信息，时间服务准则用于指示时间服务要求。可见，根据时间服务准则的标识信息，以便于更加有针对性的确定候选小区的时间服务结果。
在一种可能的实现方式中，上述方法还包括：根据N个候选小区的时间服务参数和时间服务要求，确定N个候选小区的时间服务结果。
在一种可能的实现方式中，上述方法还包括：接收第三消息，第三消息包括目标小区的标识信息，目标小区的时间服务参数满足时间服务要求。可见，接收第三消息，以便于进行小区切换。
在一种可能的实现方式中，第三消息还包括目标小区的组标识信息。
第二方面，本申请提供了另一种小区选择方法，该方法可包括：接收查询请求消息，查询请求消息包括M个候选小区的标识信息，查询请求消息用于请求查询M个候选小区的时间服务信息；M为大于或等于1的整数；发送查询响应消息，查询响应消息包括N个候选小区的时间服务信息；N为大于或等于1，小于或等于M的整数。可见，通过提供候选小区的时间服务信息，以便于选择得到时间服务参数满足时间服务要求的小区，如此有利于降低网络变换对业务造成的影响，提升业务稳定性。
在一种可能的实现方式中，N个候选小区的时间服务信息包括N个候选小区的时间服务结果，第n个候选小区的时间服务结果用于指示第n个候选小区的时间服务参数满足时间服务要求或不满足时间服务要求；n为大于或等于1，小于或等于N的整数。可见，时间服务信息可以包括用于指示时间服务参数满足或不满足时间服务要求的时间服务结果，如此有利于更加快速地选择时间服务参数满足时间服务要求的小区，提升小区选择的效率。
在一种可能的实现方式中，N个候选小区的时间服务信息包括N个候选小区的时间服务参数。可见，通过提供候选小区的时间服务参数，有利于提升小区选择的灵活性。
在一种可能的实现方式中，时间服务参数包括服务质量参数、服务区域参数、服务时间参数中的任意一种或多种。
第三方面，本申请提供了又一种小区选择方法，该方法可包括：发送第一请求消息，第一请求消息包括M个候选小区的标识信息，第一请求消息用于请求查询M个候选小区的时间服务信息；M为大于或等于1的整数；接收第一响应消息，第一响应消息包括N个候选小区的时间服务信息；N为大于或等于1，小于或等于M的整数。可见，通过查询候 选小区的时间服务信息，以便于选择得到时间服务参数满足时间服务要求的小区，如此有利于降低网络变换对业务造成的影响，提升业务稳定性。
在一种可能的实现方式中，N个候选小区的时间服务信息包括N个候选小区的时间服务结果，第n个候选小区的时间服务结果用于指示第n个候选小区的时间服务参数满足时间服务要求或不满足时间服务要求；n为大于或等于1，小于或等于N的整数。可见，时间服务信息可以包括用于指示时间服务参数满足或不满足时间服务要求的时间服务结果，如此有利于更加快速地选择时间服务参数满足时间服务要求的小区，提升小区选择的效率。
在一种可能的实现方式中，上述方法还包括：根据N个候选小区的时间服务信息，确定目标小区，目标小区的时间服务参数满足时间服务要求。可见，根据候选小区的时间服务信息，选择时间服务参数满足时间服务要求的目标小区，能够确保网络变换后的目标小区满足业务的时间服务要求，从而保障业务的服务质量。
在一种可能的实现方式中，第一请求消息还包括时间服务准则的标识信息，时间服务准则用于指示时间服务要求。可见，提供时间服务准则，有利于提升小区选择的灵活性。
在一种可能的实现方式中，上述方法还包括：发送切换请求消息，切换请求消息包括目标小区对应的标识信息。可见，发送切换请求消息，以便于进行小区切换。
在一种可能的实现方式中，切换请求消息还包括目标小区的组标识信息。
第四方面，本申请提供了一种通信装置，该装置包括发送单元和接收单元，其中，发送单元，用于发送第一查询请求消息，第一查询请求消息包括M个候选小区的标识信息，第一查询请求消息用于请求查询M个候选小区的时间服务信息；M为大于或等于1的整数；接收单元，用于接收第一查询响应消息，第一查询响应消息包括N个候选小区的时间服务信息；N为大于或等于1，小于或等于M的整数。
第五方面，本申请提供了另一种通信装置，该装置包括发送单元和接收单元，其中，接收单元，用于接收查询请求消息，查询请求消息包括M个候选小区的标识信息，查询请求消息用于请求查询M个候选小区的时间服务信息；M为大于或等于1的整数；发送单元，用于发送查询响应消息，查询响应消息包括N个候选小区的时间服务信息；N为大于或等于1，小于或等于M的整数。
第六方面，本申请提供了又一种通信装置，该装置包括发送单元和接收单元，其中，发送单元，用于发送第一请求消息，第一请求消息包括M个候选小区的标识信息，第一请求消息用于请求查询M个候选小区的时间服务信息；M为大于或等于1的整数；接收单元，用于接收第一响应消息，第一响应消息包括N个候选小区的时间服务信息；N为大于或等于1，小于或等于M的整数。
第七方面，本申请提供了一种通信装置，该装置包括处理器、存储器及存储在存储器上的计算机程序或指令，其特征在于，处理器执行计算机程序或指令以实现如第一方面及其任一种可能的实现方式中的方法，或实现如第二方面及其任一种可能的实现方式中的方法，或实现如第三方面及其任一种可能的实现方式中的方法。
第八方面，本申请提供了一种芯片。在一种实现方式中，该芯片，用于发送第一查询请求消息，第一查询请求消息包括M个候选小区的标识信息，第一查询请求消息用于请求查询M个候选小区的时间服务信息；M为大于或等于1的整数；接收第一查询响应消息， 第一查询响应消息包括N个候选小区的时间服务信息；N为大于或等于1，小于或等于M的整数。在另一种实现方式中，该芯片，用于接收查询请求消息，查询请求消息包括M个候选小区的标识信息，查询请求消息用于请求查询M个候选小区的时间服务信息；M为大于或等于1的整数；发送查询响应消息，查询响应消息包括N个候选小区的时间服务信息；N为大于或等于1，小于或等于M的整数。在又一种实现方式中，该芯片，用于发送第一请求消息，第一请求消息包括M个候选小区的标识信息，第一请求消息用于请求查询M个候选小区的时间服务信息；M为大于或等于1的整数；接收第一响应消息，第一响应消息包括N个候选小区的时间服务信息；N为大于或等于1，小于或等于M的整数。
第九方面，本申请提供了一种计算机可读存储介质，该计算机存储介质中存储有计算机可读指令，当该计算机可读指令被执行时实现上述第一方面及其任一种可能的实现方式中的方法，或实现上述第二方面及其任一种可能的实现方式中的方法，或实现如第三方面及其任一种可能的实现方式中的方法。
第十方面，本申请提供了一种计算机程序或计算机程序产品，包括代码或指令，当代码或指令在计算机上运行时，使得计算机执行如第一方面的及其任一种可能的实现方式中的方法，或执行如第二方面的及其任一种可能的实现方式中的方法，或执行如第三方面及其任一种可能的实现方式中的方法。
第十一方面，本申请提供一种芯片模组，芯片模组包括通信模组、电源模组、存储模组以及芯片，其中：所述电源模组用于为所述芯片模组提供电能；所述存储模组用于存储数据和指令；所述通信模组用于进行芯片模组内部通信，或者用于所述芯片模组与外部设备进行通信；所述芯片用于执行如第一方面的及其任一种可能的实现方式中的方法，或执行如第二方面的及其任一种可能的实现方式中的方法，或执行如第三方面及其任一种可能的实现方式中的方法。
附图说明
图1是应用于本申请实施例的系统架构示意图；
图2是本申请实施例提供的一种基于Xn接口的切换流程示意图；
图3是本申请实施例提供的一种基于N2接口的切换准备阶段的流程示意图；
图4是本申请实施例提供的一种基于N2接口的切换执行阶段的流程示意图；
图5是本申请实施例提供一种小区选择方法的流程示意图；
图6是本申请实施例提供另一种小区选择方法的流程示意图；
图7是本申请实施例提供又一种小区选择方法的流程示意图；
图8是本申请实施例提供的一种通信装置的结构示意图；
图9是本申请实施例提供的另一种通信装置的结构示意图；
图10是本申请实施例提供的一种芯片模组的结构示意图。
具体实施方式
在本申请中，“第一”、“第二”等字样用于对功能和作用基本相同的相同项或相似项进行区分。本领域技术人员可以理解“第一”、“第二”等字样并不对数量和执行次序进行限定， 并且“第一”、“第二”等字样也并不限定一定不同。“和/或”，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。字符“/”一般表示前后关联对象是一种“或”的关系。
应当理解，本申请中，“至少一个”指的是一个或多个；“多个”是指两个或两个以上。此外，本申请的“等于”可以与“大于”连用，也可以与“小于”连用。在“等于”与“大于”连用的情况下，采用“大于”的技术方案；在“等于”与“小于”连用的情况下，采用“小于”的技术方案。
首先，对本申请涉及的系统架构进行阐述。
本申请实施例可以应用于NR系统，也可以称为第五代(5th-generation，5G)系统；或者还可以应用于第六代(6th-generation，6G)系统，或者第七代(7th-generation，7G)系统，或未来的其他通信系统。
本申请可应用于图1所示的系统架构中。图1所示的通信系统可包括终端设备102和网络设备104。需要说明的是，图1所示的设备数量和形态仅用于举例并不构成对本申请实施例的限定，实际应用中可以包括不同于图1所示的数量的终端设备和网络设备。
终端设备102是一种具有无线收发功能的设备，可以称之为终端(terminal)、用户设备(user equipment，UE)、移动台(mobile station，MS)、移动终端(mobile terminal，MT)、接入终端设备、物联网终端设备、车载终端设备、工业控制终端设备、UE单元、UE站、移动站、远方站、远程终端设备、移动设备、UE终端设备、无线通信设备、UE代理或UE装置等。终端设备可以是固定的或者移动的。需要说明的是，终端设备可以支持至少一种无线通信技术，例如长期演进(long time evolution，LTE)、新空口(new radio，NR)、宽带码分多址(wideband code division multiple access，WCDMA)等。例如，终端设备可以是手机(mobile phone)、平板电脑(pad)、台式机、笔记本电脑、一体机、车载终端、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、无人驾驶(self-driving)中的无线终端、远程手术(remote medical surgery)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端、智慧家庭(smart home)中的无线终端、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、个人数字助理(personal digital assistant，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、可穿戴设备、未来移动通信网络中的终端设备或者未来演进的公共移动陆地网络(public land mobile network，PLMN)中的终端设备等。在本申请的一些实施例中，终端设备还可以是具有收发功能的装置，例如芯片模组。其中，芯片模组可以包括芯片，还可以包括其它分立器件。本申请的实施例对终端设备所采用的具体技术和具体设备形态不做限定。
网络设备104可以是一种为终端设备提供无线通信功能的设备，网络设备可以为接入网(access network，AN)设备、卫星，AN设备可以为无线接入网(radio access network，RAN)设备。其中，接入网设备可以支持至少一种无线通信技术，例如LTE、NR、WCDMA等。示例的，接入网设备包括但不限于：第五代移动通信系统(5th-generation，5G)中的下一代基站(generation nodeB，gNB)、演进型节点B(evolved node B，eNB)、无线网 络控制器(radio network controller，RNC)、节点B(node B，NB)、基站控制器(base station controller，BSC)、基站收发台(base transceiver station，BTS)、家庭基站(例如，home evolved node B、或home node B，HNB)、基带单元(baseband unit，BBU)、收发节点(transmission and reception point，TRP)、发射点(transmitting point，TP)、移动交换中心等。网络设备还可以是云无线接入网络(cloud radio access network，CRAN)场景下的无线控制器、集中单元(centralized unit，CU)和/或分布单元(distributed unit，DU)，或者接入网设备可以为中继站、接入点、车载设备、可穿戴设备以及未来移动通信中的接入网设备或者未来演进的PLMN中的接入网设备等。在一些实施例中，网络设备还可以为具有为终端设备提供无线通信功能的装置，例如芯片模组。示例的，芯片模组可以包括芯片，还可以包括其它分立器件。本申请的实施例对网络设备所采用的具体技术和具体设备形态不做限定。
可以理解的是，本申请实施例描述的通信系统是为了更加清楚的说明本申请实施例的技术方案，并不构成对本申请实施例提供的技术方案的限定，本领域技术人员可知，随着系统架构的演变和新业务场景的出现，本申请实施例提供的技术方案对于类似的技术问题，同样适用。
其次，对本申请涉及的相关概念进行阐述。
1、空口授时
随着5G的不断发展，基站可以通过广播系统信息块(systeminformation block，SIB)，例如SIB9，或无线资源控制(radio resource control，RRC)专用信令，例如下行链路(down link，DL)信息传输(DLInformationTransfer)消息为UE提供Uu口高精度授时。
示例性的，SIB9消息可以包含以下字段：
timeinfoUTC-指示世界时(UTC)相关信息，对应于发送SIB9的SI窗口的结束边界处或之后系统帧号(system frame number，SFN)边界；
dayLightSavingTime-指示是否以及如何应用夏令时间来获得本地时间；
leapSeconds-指示GPS时间与UTC之间偏移的闰秒数；
localTimeOffset-指示UTC与本地时间之间的偏移，以15分钟为单位。
2、网络切换
本申请实施例所涉及的网络切换，从切换流程的角度可以分为基于Xn接口的切换和基于N2接口的切换。其中，Xn接口为接入网设备与接入网设备之间的接口，N2接口为接入网设备与移动性管理网络网元AMF之间的接口。
(1)基于Xn接口的切换
请参见图2，图2为本申请实施例提供的一种基于Xn接口的切换流程示意图。如图2所示，基于Xn接口的切换流程可以分为切换准备阶段和切换执行阶段。切换准备阶段主要包括源RAN向目标RAN发送切换请求消息，由目标RAN根据具体情况确认是否能够支持承载的建立，并回复源RAN等。切换执行阶段主要包括源RAN向UE发送切换请求消息，由UE根据切换请求消息向目标RAN进行切换，完成切换后，目标RAN向核心网网元发送通知消息更换数据发送的路径等。
(2)基于N2接口的切换
基于N2接口的切换流程也可以分为切换准备阶段和切换执行阶段。请参见图3，图3为本申请实施例提供的一种基于N2接口的切换准备阶段的流程示意图。如图3所示，源RAN发起切换请求消息，核心网网元与目标RAN进行交互确认能够切换的承载，会话管理功能(session management function，SMF)网元/AMF网元将建立目标侧的协议数据单元(protocol data unit，PDU)会话，并且在建立好后回复AMF网元。
进一步的，请参见图4，图4为本申请实施例提供的一种基于N2接口的切换执行阶段的流程示意图。如图4所示，AMF网元向源RAN发送切换命令消息，告知源RAN切换准备阶段已经完成，源RAN可以向UE发送切换命令，触发UE向目标RAN执行切换流程，切换完成后，UE向目标RAN发送切换确认消息，后续的流程则为目标RAN与核心网网元交互更新目标侧会话以及转换数据传输路径等。
3、时间服务参数
时间服务参数的内容包括：参见下表1。
表1

下面对本申请实施例提供的小区选择方法进行阐述。
请参见图5，为本申请实施例提供的一种小区选择方法的流程示意图，可以包括但不限于如下步骤：
S501，源RAN向源AMF网元发送第一消息。相应地，源AMF网元可以接收来自源RAN的第一消息。
其中，源RAN可以理解为切换小区前UE连接的RAN，源AMF网元可以理解为切换小区前为UE提供服务的AMF网元。第一消息可以是切换请求消息。第一消息可以包括M个候选小区的标识信息，M为大于或等于1的整数。
S502，源AMF网元向时间敏感通信和时间同步功能(time sensitive communication and time synchronization function，TSCTSF)发送第一查询请求消息。相应地，TSCTSF网元可以接收来自源AMF网元的查询请求消息。
第一查询请求消息可以包括M个候选小区的标识信息，该第一查询请求消息可以用于请求查询M个候选小区的时间服务信息。可选的，第一查询请求消息还可以包括候选AMF网元的标识信息。
S503，TSCTSF网元向源AMF网元发送第一查询响应消息。相应地，源AMF网元可以接收来自TSCTSF网元的第一查询响应消息。
TSCTSF网元可以根据M个候选小区的标识信息，确定M个候选小区的时间服务信息。TSCTSF网元向源AMF网元发送的第一查询响应消息可以包括N个候选小区的时间服务信息，这里N可以是大于或等于1，小于或等于M的整数。当N为小于M的整数时，即表示TSCTSF网元可以对M个候选小区进行选择，并将选择得到的N个候选小区的时间服务信息发送至源AMF网元。例如，N个候选小区可以是TSCTSF网元从M个候选小区中选出的时间服务参数满足时间服务要求的候选小区。
可选的，第一查询响应消息还可以包括跟踪区(tracking area，TA)信息和/或候选小区信息。候选小区信息例如可以包括候选小区的小区全球标识(cell global identifier，CGI)，或者，包括候选小区的物理小区标识(physical cell identifier，PCI)，或者，包括候选小区的资源配置信息。
S504，源AMF网元根据N个候选小区的时间服务信息，确定目标小区。
其中，目标小区的时间服务参数满足时间服务要求。
在一种实现方式中，N个候选小区的时间服务信息可以包括N个候选小区的时间服务结果，即源RAN接收到的来自源AMF网元的第一查询响应消息可以包括N个候选小区的时间服务结果。其中，第n个候选小区的时间服务结果可以用于指示第n个候选小区的时间服务参数满足时间服务要求或者不满足时间服务要求，n为大于或等于1，小于或等于N的整数。源AMF网元可以根据N个候选小区的时间服务结果，确定出时间服务参数满足时间服务要求的目标小区。可选的，若源AMF网元在预设时间段内未接收到来自TSCTSF网元的第一查询响应消息，那么可以默认第n个候选小区的时间服务参数满足时间服务要求。
在另一种实现方式中，N个候选小区的时间服务信息可以包括N个候选小区的时间服务参数，即源RAN接收到的来自源AMF网元的查询响应消息可以包括N个候选小区的时间服务参数。源AMF网元可以根据N个候选小区的时间服务参数和时间服务要求，确定出时间服务参数满足时间服务要求的目标小区。可选的，时间服务参数可以包括服务质量参数、服务区域参数、服务时间参数中的任意一种或多种。
其中，在源AMF网元确定出时间服务参数满足时间服务要求的目标小区存在多个的情况下，源AMF网元可以根据多个目标小区的信号质量选择切换目标，例如可以选择信号质量最佳的目标小区作为切换目标。可选的，源AMF网元也可以根据多个目标小区的统计信息选择驻留频次最多的目标小区作为切换目标。
进一步的，源AMF网元可以选择切换的目标AMF网元。
在一种可能的实现方式中，若源AMF网元向TSCTSF网元发送的第一查询请求消息包括M个候选小区的标识信息，TSCTSF网元接收到源AMF网元的第一查询请求消息后，可以确定M个候选小区的时间服务结果以及M个候选小区对应的AMF网元。TSCTSF网元可以将N个候选小区的时间服务结果与N个候选小区对应的AMF网元发送至源AMF网元，N个候选小区的时间服务结果与N个候选小区对应的AMF网元例如可以以表格的形式配置在源AMF网元。这样，源AMF网元确定目标小区后，根据目标小区即可确定目标小区对应的目标AMF网元进行切换。
在另一种可能的实现方式中，若源AMF网元向TSCTSF网元发送的第一查询请求消息包括候选AMF网元的标识信息，TSCTSF网元接收到源AMF网元的第一查询请求消息后，可以确定候选AMF网元对应的候选小区的时间服务结果。进而，TSCTSF网元可以将候选AMF网元对应的候选小区的时间服务结果发送至源AMF网元。源AMF网元可以根据候选AMF网元对应的候选小区的时间服务结果，确定出目标小区以及目标小区对应的目标AMF网元。示例性的，假设源AMF网元向TSCTSF网元发送的第一查询请求消息包括两个候选AMF网元的标识信息，即AMF1和AMF2，TSCTSF网元可以确定AMF1对应的候选小区的时间服务结果，以及AMF2对应的候选小区的时间服务结果。若AMF1对应的候选小区的时间服务结果，指示AMF1对应的候选小区的时间服务参数满足时间服务要求，AMF2对应的候选小区的时间服务结果，指示AMF2对应的候选小区的时间服务参数不满足时间服务要求，那么源AMF网元接收到AMF1对应的候选小区的时间服务结果，以及AMF2对应的候选小区的时间服务结果后，可以确定目标小区为AMF1对应的候选小区，目标AMF网元为AMF1。
S505，源AMF网元向源RAN发送第二消息。相应地，源RAN可以接收来自源AMF网元的第二消息。
第二消息可以包括目标小区的标识信息。第二消息可以是切换响应消息。可选的，在N个候选小区的时间服务参数都不满足时间服务要求的情况下，第二消息可以用于指示拒绝切换，并携带拒绝原因。在此情况下，第二消息可以为切换准备失败(handover preparation failure)消息。
在图5所示的实施例中，源AMF网元可以根据N个候选小区的时间服务信息，确定时间服务参数满足时间服务要求的目标小区，确保网络变换后的目标小区能够满足业务的时间服务要求，从而降低网络变换对业务造成的影响，提升业务稳定性。
请参见图6，为本申请实施例提供的另一种小区选择方法的流程示意图，可以包括但不限于如下步骤：
S601，源RAN向源AMF网元发送第一查询请求消息。相应地，源AMF网元接收来自源RAN的第一查询请求消息。
其中，源RAN可以理解为切换小区前UE连接的RAN，源AMF网元可以理解为切换小区前为UE提供服务的AMF网元。第一查询请求消息可以包括M个候选小区的标识信息，M为大于或等于1的整数。可选的，M个候选小区可以是源RAN确定的潜在的切换目标小区。M个候选小区可以是由相同的RAN提供，也可以是由不同的RAN提供，还可以是M个候选小区中的部分候选小区由相同的RAN提供，部分候选小区由不同的RAN提供，本申请实施例对此不作限制。可以理解的是，M个候选小区也可以与UE切换之前的源小区是同一个RAN或者不同RAN提供。
可选的，第一查询请求消息还可以包括时间服务准则的标识信息，时间服务准则可以用于指示当前业务的时间服务要求。其中，时间服务准则的标识信息例如可以是时间服务准则的索引值。可选的，第一查询请求消息也可以包括时间服务准则的具体内容。示例性的，假设UE当前运行有金融类的业务A，该金融类的业务A的时间服务要求为偏差1ms，那么第一查询请求消息可以包括业务A的时间服务准则的具体内容，即偏差1ms。
S602，源AMF网元向TSCTSF网元发送第二查询请求消息。相应地，TSCTSF网元接收来自源AMF网元的第二查询请求消息。
在本申请实施例中，源AMF网元在接收到来自源RAN的第一查询请求消息的情况下，可以向TSCTSF网元发送第二查询请求消息，第二查询请求消息可以包括M个候选小区的标识信息，第二查询请求消息可以用于请求查询M个候选小区的时间服务信息。TSCTSF网元根据M个候选小区的标识信息，可以查询得到M个候选小区的时间服务信息。
可选的，源AMF网元向TSCTSF网元发送的第二查询请求消息还可以包括候选AMF网元的标识信息。
S603，TSCTSF网元向源AMF网元发送第二查询响应消息。相应地，源AMF网元接收来自TSCTSF网元的第二查询响应消息。
TSCTSF网元可以向源AMF网元发送第二查询响应消息，第二查询响应消息可以包括K个候选小区的时间服务信息，K为大于或等于1，小于或等于M的整数。当K为小于M 的整数时，即表示TSCTSF网元可以对M个候选小区进行选择，并将选择得到的K个候选小区的时间服务信息发送至源AMF网元。例如，K个候选小区可以是TSCTSF网元从M个候选小区中选出的时间服务信息满足时间服务要求的候选小区。
可选的，第二查询响应消息还可以包括跟踪区(tracking area，TA)信息和/或候选小区信息。候选小区信息例如可以包括候选小区的小区全球标识(cell global identifier，CGI)，或者，包括候选小区的物理小区标识(physical cell identifier，PCI)，或者，包括候选小区的资源配置信息。
S604，源AMF网元向源RAN发送第一查询响应消息。相应地，源AMF网元接收来自源AMF网元的第一查询响应消息。
源AMF网元在接收到来自TSCTSF网元的第二查询响应消息的情况下，可以向源RAN发送第一查询响应消息，第一查询响应消息可以包括N个候选小区的时间服务信息，N可以为大于或等于1，小于或等于K的整数。当N为小于K的整数时，即表示源AMF网元可以对K个候选小区进行选择，并将选择得到的N个候选小区的时间服务信息发送至源RAN。例如，N个候选小区可以是源AMF网元从K个候选小区中选出的时间服务信息满足时间服务要求的候选小区。
S605，源RAN根据N个候选小区的时间服务信息，确定目标小区。
其中，目标小区的时间服务参数满足当前业务的时间服务要求。
在一种实现方式中，N个候选小区的时间服务信息可以包括N个候选小区的时间服务结果，即源RAN接收到的来自源AMF网元的第一查询响应消息可以包括N个候选小区的时间服务结果。其中，第n个候选小区的时间服务结果可以用于指示第n个候选小区的时间服务参数满足时间服务要求或者不满足当前业务的时间服务要求，n为大于或等于1，小于或等于N的整数。源RAN根据N个候选小区的时间服务结果，可以确定出时间服务参数满足当前业务的时间服务要求的目标小区。可选的，若源RAN在预设时间段内未接收到来自源AMF网元的第一查询响应消息，那么可以默认第n个候选小区的时间服务参数满足当前业务的时间服务要求。
可选的，N个候选小区的时间服务结果可以是源AMF网元根据当前业务的时间服务要求，以及TSCTSF网元提供的N个候选小区的时间服务参数确定的。或者，N个候选小区的时间服务结果也可以是TSCTSF网元根据当前业务的时间服务要求，以及N个候选小区的时间服务参数确定的。
在另一种实现方式中，N个候选小区的时间服务信息可以包括N个候选小区的时间服务参数，即源RAN接收到的来自源AMF网元的第一查询响应消息可以包括N个候选小区的时间服务参数。源RAN可以根据N个候选小区的时间服务参数和当前业务的时间服务要求，确定出时间服务参数满足当前业务的时间服务要求的目标小区。可选的，时间服务参数可以包括服务质量参数、服务区域参数、服务时间参数中的任意一种或多种。
可选的，源RAN确定目标小区后，可以向源AMF网元发送切换请求消息，切换请求消息可以包括目标小区的标识信息，目标小区的时间服务参数满足当前业务的时间服务要求。
可选的，目标小区可以是一个小区组，切换请求消息还可以包括目标小区的组标识信息。
在图6所示的实施例中，源RAN可以根据N个候选小区的时间服务信息，确定时间服务参数满足当前业务的时间服务要求的目标小区，确保网络变换后的目标小区能够满足业务的时间服务要求，从而降低网络变换对业务造成的影响，提升业务稳定性。
请参见图7，为本申请实施例提供的又一小区选择方法的流程示意图，可以包括但不限于如下步骤：
S701，第一RAN向第二RAN发送第一请求消息。相应地，第二RAN接收来自第一RAN的第一请求消息。
其中，第一RAN可以是源RAN，即切换小区前UE连接的RAN。第一请求消息可以包括第二RAN对应的多个小区的标识信息，第一请求消息可以用于获取第二RAN对应的多个小区的时间服务信息。可选的，第一请求消息可以包括时间服务要求。第二RAN可以根据第二RAN对应的多个小区的标识信息，以及时间服务要求，确定第二RAN对应的多个小区的时间服务信息。
可选的，第一请求消息也可以为时间服务订阅消息。当第一请求消息为时间服务订阅消息时，第一RAN可以订阅第二RAN对应的多个小区的时间服务信息，即第二RAN对应的多个小区的时间服务信息存在变化时，第一RAN便可以接收到时间服务通知消息。
S702，第二RAN向第一RAN发送第一响应消息。相应地，第一RAN接收来自第二RAN的第一响应消息。
其中，第一响应消息可以包括第二RAN对应的多个小区的时间服务信息。
可选的，第二RAN对应的多个小区的服务信息可以包括第二RAN对应的多个小区的时间服务结果，多个小区中的第一小区的时间服务结果用于指示第一小区的时间服务参数满足时间服务要求或不满足时间服务要求，第一小区可以是第二RAN对应的多个小区中的任一个。可选的，若第一RAN在预设时间内未接收到第一响应消息，那么可以默认第一小区的时间服务参数满足时间服务要求。
可选的，第二RAN对应的多个小区的服务信息可以包括第二RAN对应的多个小区的时间服务参数。时间服务参数可以包括服务质量参数、服务区域参数、服务时间参数中的任意一种或多种。
可选的，第一响应消息可以为时间服务通知消息，若第一RAN接收到时间服务通知消息，即表示第二RAN对应的多个小区的时间服务信息存在变化。
S703，第一RAN根据第二RAN对应的多个小区的时间服务信息，确定目标小区。
其中，目标小区的时间服务参数满足时间服务要求。
在一种实现方式中，第二RAN对应的多个小区的时间服务信息可以包括第二RAN对应的多个小区的时间服务结果，第一RAN根据第二RAN对应的多个小区的时间服务结果，可以确定出时间服务参数满足时间服务要求的目标小区。
在另一种实现方式中，第二RAN对应的多个小区的时间服务信息可以包括第二RAN对应的多个小区的时间服务参数，第一RAN根据第二RAN对应的多个小区的时间服务参数和时间服务要求，可以确定出时间服务参数满足时间服务要求的目标小区。
进一步的，第一RAN确定目标小区后，可以执行小区切换。可以理解的是，若第二 RAN对应的多个小区的时间服务参数都不满足时间服务要求，第一RAN则可以不执行小区切换。
在图7所示的实施例中，第一RAN可以根据第二RAN对应的多个小区的时间服务信息，确定目标小区时间服务参数满足时间服务要求的目标小区，确保网络变换后的目标小区能够满足业务的时间服务要求，从而降低网络变换对业务造成的影响，提升业务稳定性。
请参见图8，是本申请实施例提供的一种通信装置的结构示意图，如图8所示，该通信装置80包括发送单元801、接收单元802。
在一种实现方式中，通信装置80为AMF网元或与AMF网元匹配的装置：
发送单元801，用于发送第一查询请求消息，第一查询请求消息包括M个候选小区的标识信息，第一查询请求消息用于请求查询M个候选小区的时间服务信息；M为大于或等于1的整数；
接收单元802，用于接收第一查询响应消息，第一查询响应消息包括N个候选小区的时间服务信息；N为大于或等于1，小于或等于M的整数。
可选的，N个候选小区的时间服务信息包括N个候选小区的时间服务结果，第n个候选小区的时间服务结果用于指示第n个候选小区的时间服务参数满足时间服务要求或不满足时间服务要求；n为大于或等于1，小于或等于N的整数。
可选的，该通信装置80还可以包括处理单元803，处理单元803，用于根据N个候选小区的时间服务信息，确定目标小区，目标小区的时间服务参数满足时间服务要求。
可选的，接收单元802，还用于接收第一消息，第一消息包括M个候选小区的标识信息。
可选的，发送单元801，还用于发送第二消息，第二消息包括目标小区的标识信息。
可选的，接收单元802，还用于接收第二查询请求消息，第二查询请求消息包括K个候选小区的标识信息，第二查询请求消息用于请求查询K个候选小区的时间服务信息；K为大于或等于1的整数。
可选的，发送单元801，还用于发送第二查询响应消息，第二查询响应消息包括H个候选小区的时间服务信息；H为大于或等于1，小于或等于N的整数。
可选的，第二查询请求消息还包括时间服务准则的标识信息，时间服务准则用于指示时间服务要求。
可选的，处理单元803，还用于根据N个候选小区的时间服务参数和时间服务要求，确定N个候选小区的时间服务结果。
可选的，接收单元802，还用于接收第三消息，第三消息包括目标小区的标识信息，目标小区的时间服务参数满足时间服务要求。
可选的，第三消息还包括目标小区的组标识信息。
在另一种实现方式中，通信装置80为TSCTSF网元或与TSCTSF网元匹配的装置：
接收单元802，用于接收查询请求消息，查询请求消息包括M个候选小区的标识信息，查询请求消息用于请求查询M个候选小区的时间服务信息；M为大于或等于1的整数；
发送单元801，用于发送查询响应消息，查询响应消息包括N个候选小区的时间服务 信息；N为大于或等于1，小于或等于M的整数。
可选的，N个候选小区的时间服务信息包括N个候选小区的时间服务结果，第n个候选小区的时间服务结果用于指示第n个候选小区的时间服务参数满足时间服务要求或不满足时间服务要求；n为大于或等于1，小于或等于N的整数。
可选的，N个候选小区的时间服务信息包括N个候选小区的时间服务参数。
可选的，时间服务参数包括服务质量参数、服务区域参数、服务时间参数中的任意一种或多种。
在又一种实现方式中，通信装置80为RAN或与RAN匹配的装置：
发送单元801，用于送第一请求消息，第一请求消息包括M个候选小区的标识信息，第一请求消息用于请求查询M个候选小区的时间服务信息；M为大于或等于1的整数；
接收单元802，用于接收第一响应消息，第一响应消息包括N个候选小区的时间服务信息；N为大于或等于1，小于或等于M的整数。
可选的，N个候选小区的时间服务信息包括N个候选小区的时间服务结果，第n个候选小区的时间服务结果用于指示第n个候选小区的时间服务参数满足时间服务要求或不满足时间服务要求；n为大于或等于1，小于或等于N的整数。
可选的，处理单元803，用于根据N个候选小区的时间服务信息，确定目标小区，目标小区的时间服务参数满足时间服务要求。
可选的，第一请求消息还包括时间服务准则的标识信息，时间服务准则用于指示时间服务要求。
可选的，发送单元801，还用于发送切换请求消息，切换请求消息包括目标小区对应的标识信息。
可选的，切换请求消息还包括目标小区的组标识信息。
请参见图9，图9是本申请实施例提供的另一种通信装置90。该通信装置90可以包括收发器901和处理器902。可选的，该通信装置还可以包括存储器903。其中，收发器901、处理器902、存储器903可以通过总线904或其他方式连接。总线在图9中以粗线表示，其它部件之间的连接方式，仅是进行示意性说明，并不引以为限。总线可以分为地址总线、数据总线、控制总线等。为便于表示，图9中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。
本申请实施例中的耦合是装置、单元或模块之间的间接耦合或通信连接，可以是电性，机械或其它的形式，用于装置、单元或模块之间的信息交互。本申请实施例中不限定上述收发器901、处理器902、存储器903之间的具体连接介质。
存储器903可以包括只读存储器和随机存取存储器，并向处理器902提供指令和数据。存储器903的一部分还可以包括非易失性随机存取存储器。
处理器902可以是中央处理单元(Central Processing Unit，CPU)，该处理器902还可以是其他通用处理器、数字信号处理器(Digital Signal Processor，DSP)、专用集成电路(Application Specific Integrated Circuit，ASIC)、现场可编程门阵列(Field-Programmable Gate Array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组 件等。通用处理器可以是微处理器，可选的，该处理器902也可以是任何常规的处理器等。
在一种可选的实施方式中，存储器903，用于存储程序指令；处理器902，用于调用存储器903中存储的程序指令，以用于执行图5-图7对应实施例中源AMF网元所执行的步骤。
在另一种可选的实施方式中，存储器903，用于存储程序指令；处理器902，用于调用存储器903中存储的程序指令，以用于执行图5-图7对应实施例中TSCTSF网元所执行的步骤。
在又一种可选的实施方式中，存储器903，用于存储程序指令；处理器902，用于调用存储器903中存储的程序指令，以用于执行图5-图7对应实施例中源RAN所执行的步骤。
在本申请实施例中，可以通过在包括CPU、随机存取存储介质(Random Access Memory，RAM)、只读存储介质(Read-Only Memory，ROM)等处理元件和存储元件的例如计算机的通用计算装置上运行能够执行上述方法所涉及的各步骤的计算机程序(包括程序代码)，以及来实现本申请实施例所提供的方法。计算机程序可以记载于例如计算机可读记录介质上，并通过计算机可读记录介质装载于上述计算装置中，并在其中运行。
基于同一发明构思，本申请实施例中提供的通信装置90解决问题的原理与有益效果与本申请图5-图7所示实施例中解决问题的原理和有益效果相似，可以参见方法的实施的原理和有益效果，为简洁描述，在这里不再赘述。
前述通信装置，例如可以是：芯片、或者芯片模组。
本申请实施例还提供一种芯片，在一种实现方式中，该芯片用于：发送第一查询请求消息，第一查询请求消息包括M个候选小区的标识信息，第一查询请求消息用于请求查询M个候选小区的时间服务信息；M为大于或等于1的整数；接收第一查询响应消息，第一查询响应消息包括N个候选小区的时间服务信息；N为大于或等于1，小于或等于M的整数。
可选的，N个候选小区的时间服务信息包括N个候选小区的时间服务结果，第n个候选小区的时间服务结果用于指示第n个候选小区的时间服务参数满足时间服务要求或不满足时间服务要求；n为大于或等于1，小于或等于N的整数。
可选的，该芯片还可以用于：根据N个候选小区的时间服务信息，确定目标小区，目标小区的时间服务参数满足时间服务要求。
可选的，该芯片还可以用于：接收第一消息，第一消息包括M个候选小区的标识信息。
可选的，该芯片还可以用于：发送第二消息，第二消息包括目标小区的标识信息。
可选的，该芯片还可以用于：接收第二查询请求消息，第二查询请求消息包括K个候选小区的标识信息，第二查询请求消息用于请求查询K个候选小区的时间服务信息；K为大于或等于1的整数。
可选的，该芯片还可以用于：发送第二查询响应消息，第二查询响应消息包括H个候选小区的时间服务信息；H为大于或等于1，小于或等于N的整数。
可选的，第二查询请求消息还包括时间服务准则的标识信息，时间服务准则用于指示时间服务要求。
可选的，该芯片还可以用于：根据N个候选小区的时间服务参数和时间服务要求，确定N个候选小区的时间服务结果。
可选的，该芯片还可以用于：接收第三消息，第三消息包括目标小区的标识信息，目标小区的时间服务参数满足时间服务要求。
可选的，第三消息还包括目标小区的组标识信息。
在另一种实现方式中，该芯片用于：接收查询请求消息，查询请求消息包括M个候选小区的标识信息，查询请求消息用于请求查询M个候选小区的时间服务信息；M为大于或等于1的整数；发送查询响应消息，查询响应消息包括N个候选小区的时间服务信息；N为大于或等于1，小于或等于M的整数。
可选的，N个候选小区的时间服务信息包括N个候选小区的时间服务结果，第n个候选小区的时间服务结果用于指示第n个候选小区的时间服务参数满足时间服务要求或不满足时间服务要求；n为大于或等于1，小于或等于N的整数。
可选的，N个候选小区的时间服务信息包括N个候选小区的时间服务参数。
可选的，时间服务参数包括服务质量参数、服务区域参数、服务时间参数中的任意一种或多种。
在又一种实现方式中，该芯片用于：发送第一请求消息，第一请求消息包括M个候选小区的标识信息，第一请求消息用于请求查询M个候选小区的时间服务信息；M为大于或等于1的整数；接收第一响应消息，第一响应消息包括N个候选小区的时间服务信息；N为大于或等于1，小于或等于M的整数。
可选的，N个候选小区的时间服务信息包括N个候选小区的时间服务结果，第n个候选小区的时间服务结果用于指示第n个候选小区的时间服务参数满足时间服务要求或不满足时间服务要求；n为大于或等于1，小于或等于N的整数。
可选的，该芯片还可以用于：根据N个候选小区的时间服务信息，确定目标小区，目标小区的时间服务参数满足时间服务要求。
可选的，第一请求消息还包括时间服务准则的标识信息，时间服务准则用于指示时间服务要求。
可选的，该芯片还可以用于：发送切换请求消息，切换请求消息包括目标小区对应的标识信息。
可选的，切换请求消息还包括目标小区的组标识信息。
请参阅图10，图10为本申请实施例提供的一种芯片模组的结构示意图。该芯片模组100可以执行前述方法实施例中通信装置80的相关步骤，该芯片模组100包括：通信接口1001和芯片1002。
其中，通信接口用于进行芯片模组内部通信，或者用于该芯片模组与外部设备进行通信；该芯片用于实现本申请实施例中通信装置的功能，具体参见图5-图7对应实施例。可选的，芯片模组100还可以包括存储模组1003、电源模组1004。存储模组1003用于存储数据和指令。电源模组1004用于为芯片模组提供电能。
对于应用于或集成于芯片模组的各个装置、产品，其包含的各个模块可以都采用电路 等硬件的方式实现，不同的模块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)部分模块可以采用电路等硬件方式实现。
本申请实施例还提供一种计算机可读存储介质，该计算机存储介质中存储有计算机可读指令，当该计算机可读指令被执行时实现上述方法实施例所提供的方法。
本申请实施例还提供一种计算机程序或计算机程序产品，包括代码或指令，当代码或指令在计算机上运行时，使得计算机执行上述方法实施例所提供的方法。
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。
需要说明的是，对于前述的各个方法实施例，为了简单描述，故将其都表述为一系列的动作组合，但是本领域技术人员应该知悉，本申请并不受所描述的动作顺序的限制，因为依据本申请，某一些步骤可以采用其他顺序或者同时进行。其次，本领域技术人员也应该知悉，说明书中所描述的实施例均属于优选实施例，所涉及的动作和模块并不一定是本申请所必须的。
本申请实施例方法中的步骤可以根据实际需要进行顺序调整、合并和删减。
本申请实施例装置中的模块可以根据实际需要进行合并、划分和删减。
本领域普通技术人员可以理解上述实施例的各种方法中的全部或部分步骤是可以通过程序来指令相关的硬件来完成，该程序可以存储于一计算机可读存储介质中，可读存储介质可以包括：闪存盘、ROM、RAM、磁盘或光盘等。
以上所揭露的仅为本申请一种较佳实施例而已，仅仅是本申请一部分实施例，不能以此来限定本申请之权利范围。

Claims (29)

  1. 一种小区选择方法，其特征在于，所述方法包括：
    发送第一查询请求消息，所述第一查询请求消息包括M个候选小区的标识信息，所述第一查询请求消息用于请求查询所述M个候选小区的时间服务信息；M为大于或等于1的整数；
    接收第一查询响应消息，所述第一查询响应消息包括N个候选小区的时间服务信息；N为大于或等于1，小于或等于M的整数。
  2. 如权利要求1所述的方法，其特征在于，所述N个候选小区的时间服务信息包括所述N个候选小区的时间服务结果，第n个候选小区的时间服务结果用于指示所述第n个候选小区的时间服务参数满足时间服务要求或不满足时间服务要求；n为大于或等于1，小于或等于N的整数。
  3. 如权利要求1所述的方法，其特征在于，所述方法还包括：
    根据所述N个候选小区的时间服务信息，确定目标小区，所述目标小区的时间服务参数满足时间服务要求。
  4. 如权利要求1至3任一项所述的方法，其特征在于，所述发送第一查询请求消息之前，还包括：
    接收第一消息，所述第一消息包括所述M个候选小区的标识信息。
  5. 如权利要求1至3任一项所述的方法，其特征在于，所述方法还包括：
    发送第二消息，所述第二消息包括所述目标小区的标识信息。
  6. 如权利要求1所述的方法，其特征在于，所述发送第一查询请求消息之前，还包括：
    接收第二查询请求消息，所述第二查询请求消息包括K个候选小区的标识信息，所述第二查询请求消息用于请求查询K个候选小区的时间服务信息；K为大于或等于1的整数。
  7. 如权利要求6所述的方法，其特征在于，所述接收第一查询响应消息之后，还包括：
    发送第二查询响应消息，所述第二查询响应消息包括H个候选小区的时间服务信息；H为大于或等于1，小于或等于N的整数。
  8. 如权利要求6所述的方法，其特征在于，所述第二查询请求消息还包括时间服务准则的标识信息，所述时间服务准则用于指示时间服务要求。
  9. 如权利要求8所述的方法，其特征在于，所述方法还包括：
    根据所述N个候选小区的时间服务参数和所述时间服务要求，确定所述N个候选小区 的时间服务结果。
  10. 如权利要求6至9任一项所述的方法，其特征在于，所述方法还包括：
    接收第三消息，所述第三消息包括目标小区的标识信息，所述目标小区的时间服务参数满足时间服务要求。
  11. 如权利要求10所述的方法，其特征在于，所述第三消息还包括所述目标小区的组标识信息。
  12. 一种小区选择方法，其特征在于，所述方法包括：
    接收查询请求消息，所述查询请求消息包括M个候选小区的标识信息，所述查询请求消息用于请求查询所述M个候选小区的时间服务信息；M为大于或等于1的整数；
    发送查询响应消息，所述查询响应消息包括N个候选小区的时间服务信息；N为大于或等于1，小于或等于M的整数。
  13. 如权利要求12所述的方法，其特征在于，
    所述N个候选小区的时间服务信息包括所述N个候选小区的时间服务结果，第n个候选小区的时间服务结果用于指示所述第n个候选小区的时间服务参数满足时间服务要求或不满足时间服务要求；n为大于或等于1，小于或等于N的整数。
  14. 如权利要求12所述的方法，其特征在于，所述N个候选小区的时间服务信息包括所述N个候选小区的时间服务参数。
  15. 如权利要求14所述的方法，其特征在于，所述时间服务参数包括服务质量参数、服务区域参数、服务时间参数中的任意一种或多种。
  16. 一种小区选择方法，其特征在于，所述方法包括：
    发送第一请求消息，所述第一请求消息包括M个候选小区的标识信息，所述第一请求消息用于请求查询所述M个候选小区的时间服务信息；M为大于或等于1的整数；
    接收第一响应消息，所述第一响应消息包括N个候选小区的时间服务信息；所述N为大于或等于1，小于或等于M的整数。
  17. 如权利要求16所述的方法，其特征在于，所述N个候选小区的时间服务信息包括所述N个候选小区的时间服务结果，第n个候选小区的时间服务结果用于指示所述第n个候选小区的时间服务参数满足时间服务要求或不满足时间服务要求；n为大于或等于1，小于或等于N的整数。
  18. 如权利要求16所述的方法，其特征在于，所述方法还包括：
    根据所述N个候选小区的时间服务信息，确定目标小区，所述目标小区的时间服务参数满足时间服务要求。
  19. 如权利要求16至18任一项所述的方法，其特征在于，所述第一请求消息还包括时间服务准则的标识信息，所述时间服务准则用于指示时间服务要求。
  20. 如权利要求16至18任一项所述的方法，其特征在于，所述方法还包括：
    发送切换请求消息，所述切换请求消息包括所述目标小区对应的标识信息。
  21. 如权利要求20所述的方法，其特征在于，所述切换请求消息还包括所述目标小区的组标识信息。
  22. 如权利要求16所述的方法，其特征在于，所述第一请求消息为时间服务订阅消息，所述第一响应消息为时间服务通知消息。
  23. 一种通信装置，其特征在于，所述装置包括：
    发送单元，用于发送第一查询请求消息，所述第一查询请求消息包括M个候选小区的标识信息，所述第一查询请求消息用于请求查询所述M个候选小区的时间服务信息；M为大于或等于1的整数；
    接收单元，用于接收第一查询响应消息，所述第一查询响应消息包括N个候选小区的时间服务信息；N为大于或等于1，小于或等于M的整数。
  24. 一种通信装置，其特征在于，所述装置包括：
    接收单元，用于接收查询请求消息，所述查询请求消息包括M个候选小区的标识信息，所述查询请求消息用于请求查询所述M个候选小区的时间服务信息；M为大于或等于1的整数；
    发送单元，用于发送查询响应消息，所述查询响应消息包括N个候选小区的时间服务信息；N为大于或等于1，小于或等于M的整数。
  25. 一种通信装置，其特征在于，所述装置包括：
    发送单元，用于发送第一请求消息，所述第一请求消息包括M个候选小区的标识信息，所述第一请求消息用于请求查询所述M个候选小区的时间服务信息；M为大于或等于1的整数；
    接收单元，用于接收第一响应消息，所述第一响应消息包括N个候选小区的时间服务信息；所述N为大于或等于1，小于或等于M的整数。
  26. 一种通信装置，其特征在于，包括处理器、存储器及存储在所述存储器上的计算机程序或指令，其特征在于，所述处理器执行所述计算机程序或指令以实现权利要求1-11中 任一项所述方法的步骤，或实现权利要求12-15中任一项所述方法的步骤，或实现权利要求16-22中任一项所述方法的步骤。
  27. 一种芯片，包括处理器，其特征在于，所述处理器执行权利要求1-11中任一项所述方法的步骤，或执行权利要求12-15中任一项所述方法的步骤，或执行权利要求16-22中任一项所述方法的步骤。
  28. 一种芯片模组，其特征在于，所述芯片模组包括通信模组、电源模组、存储模组以及芯片，其中：所述电源模组用于为所述芯片模组提供电能；所述存储模组用于存储数据和指令；所述通信模组用于进行所述芯片模组内部通信，或者用于所述芯片模组与外部设备进行通信；所述芯片用于执行权利要求1-11中任一项所述方法的步骤，或执行权利要求12-15中任一项所述方法的步骤，或执行权利要求16-22中任一项所述方法的步骤。
  29. 一种计算机可读存储介质，其特征在于，其存储有计算机程序或指令，所述计算机程序或指令被执行时实现权利要求1-11中任一项所述方法的步骤，或实现权利要求12-15中任一项所述方法的步骤，或实现权利要求16-22中任一项所述方法的步骤。
PCT/CN2024/085718 2023-04-07 2024-04-03 小区选择方法及通信装置 Ceased WO2024208239A1 (zh)

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