WO2022133677A1

WO2022133677A1 - Cell selection method and apparatus, and terminal and storage medium

Info

Publication number: WO2022133677A1
Application number: PCT/CN2020/138095
Authority: WO
Inventors: 付喆; 王淑坤
Original assignee: Oppo广东移动通信有限公司
Priority date: 2020-12-21
Filing date: 2020-12-21
Publication date: 2022-06-30
Also published as: CN116648951A

Abstract

Disclosed are a cell selection method and apparatus, and a terminal and a storage medium, which relate to the technical field of communications. The method comprises: after a first cell or a first frequency point that supports a target slice is determined, executing a connection process for the first cell or a cell corresponding to the first frequency point. By means of the technical solution provided in the embodiments of the present application, during the process of executing cell switching, a terminal takes, as a priority condition for cell selection, whether to support a target slice, to perform one time switching in place, such that signaling overheads are saved on and a business service delay is shortened as compared with the situation that after a terminal device accesses an inappropriate cell, cell selection and switching need to re-performed.

Description

小区选择方法、装置、终端及存储介质Cell selection method, device, terminal and storage medium

技术领域technical field

本申请实施例涉及通信技术领域，特别涉及一种小区选择方法、装置、终端及存储介质。The embodiments of the present application relate to the field of communications technologies, and in particular, to a cell selection method, apparatus, terminal, and storage medium.

背景技术Background technique

由于终端设备具有移动性，因此终端设备会在不同小区之间进行切换。Due to the mobility of the terminal equipment, the terminal equipment will switch between different cells.

终端设备在进行小区切换时，首先需要选择切换至的目标小区。在相关技术中，终端设备仅依据各小区的信道质量选择切换至的目标小区，在小区选择时考虑的信息量较为单一，导致终端设备接入不合适的小区。When a terminal device performs cell handover, it first needs to select a target cell to be handed over. In the related art, the terminal equipment only selects the target cell to switch to according to the channel quality of each cell, and the amount of information considered in cell selection is relatively single, which causes the terminal equipment to access an inappropriate cell.

如果终端设备接入了不合适的小区，则需要重新进行小区选择和切换，造成信令开销和业务服务时延。If a terminal device accesses an inappropriate cell, it needs to perform cell selection and handover again, resulting in signaling overhead and service service delay.

发明内容SUMMARY OF THE INVENTION

本申请实施例提供了一种小区选择方法、装置、终端及存储介质。所述技术方案如下：The embodiments of the present application provide a cell selection method, apparatus, terminal, and storage medium. The technical solution is as follows:

根据本申请实施例的一个方面，提供了一种小区选择方法，应用于终端设备，所述方法包括：According to an aspect of the embodiments of the present application, a cell selection method is provided, which is applied to a terminal device, and the method includes:

在确定出支持目标切片的第一小区或第一频点之后，执行针对所述第一小区或对应所述第一频点的小区的连接过程。After the first cell or the first frequency point supporting the target slice is determined, a connection process for the first cell or the cell corresponding to the first frequency point is performed.

根据本申请实施例的一个方面，提供了一种小区选择装置，所述装置包括：According to an aspect of the embodiments of the present application, an apparatus for cell selection is provided, and the apparatus includes:

小区连接模块，用于在确定出支持目标切片的第一小区或第一频点之后，执行针对所述第一小区或对应所述第一频点的小区的连接过程。A cell connection module, configured to perform a connection process for the first cell or a cell corresponding to the first frequency after determining the first cell or the first frequency that supports the target slice.

根据本申请实施例的一个方面，提供了一种终端设备，所示终端设备包括处理器；其中：According to an aspect of the embodiments of the present application, a terminal device is provided, where the terminal device includes a processor; wherein:

所述处理器，用于在确定出支持目标切片的第一小区或第一频点之后，执行针对所述第一小区或对应所述第一频点的小区的连接过程。The processor is configured to perform a connection process for the first cell or a cell corresponding to the first frequency after determining the first cell or the first frequency that supports the target slice.

根据本申请实施例的一个方面，提供了一种计算机可读存储介质，所述存储介质中存储有计算机程序，所述计算机程序用于被终端设备的处理器执行，以实现上述小区选择方法。According to an aspect of the embodiments of the present application, a computer-readable storage medium is provided, where a computer program is stored in the storage medium, and the computer program is configured to be executed by a processor of a terminal device to implement the above cell selection method.

根据本申请实施例的一个方面，提供了一种芯片，所述芯片包括可编程逻辑电路和/或程序指令，当所述芯片在终端设备上运行时，用于实现上述小区选择方法。According to an aspect of the embodiments of the present application, a chip is provided, the chip includes a programmable logic circuit and/or program instructions, and when the chip runs on a terminal device, it is used to implement the above cell selection method.

根据本申请实施例的一个方面，提供了一种计算机程序产品，当所述计算机程序产品在终端设备的处理器上运行时，使得终端设备执行上述小区选择方法。According to an aspect of the embodiments of the present application, a computer program product is provided, which when the computer program product runs on a processor of a terminal device, enables the terminal device to execute the above cell selection method.

本申请实施例提供的技术方案可以包括如下有益效果：The technical solutions provided by the embodiments of the present application may include the following beneficial effects:

通过确定出支持目标切片的第一小区或第一频点，终端设备与第一小区或对应第一频点的小区进行连接，从而使得终端设备在执行小区切换的过程中，将是否支持目标切片作为小区选择的优先条件，尽可能地一次切换到位，相比于终端设备接入了不合适的小区之后，还需要重新进行小区选择和切换，本申请实施例有助于节省信令开销，缩短业务服务时延。By determining the first cell or the first frequency that supports the target slice, the terminal device is connected to the first cell or the cell corresponding to the first frequency, so that the terminal device will decide whether to support the target slice during the cell handover process. As a priority condition for cell selection, handover should be in place as much as possible at one time. Compared with the need to perform cell selection and handover again after a terminal device accesses an inappropriate cell, the embodiments of the present application help to save signaling overhead and shorten the Business service delay.

附图说明Description of drawings

图1是本申请一个实施例提供的网络架构的示意图；1 is a schematic diagram of a network architecture provided by an embodiment of the present application;

图2是本申请一个实施例提供的小区选择方法的流程图；2 is a flowchart of a cell selection method provided by an embodiment of the present application;

图3是本申请另一个实施例提供的小区选择方法的流程图；3 is a flowchart of a cell selection method provided by another embodiment of the present application;

图4是本申请另一个实施例提供的小区选择方法的流程图；4 is a flowchart of a cell selection method provided by another embodiment of the present application;

图5是本申请另一个实施例提供的小区选择方法的流程图；5 is a flowchart of a cell selection method provided by another embodiment of the present application;

图6是本申请另一个实施例提供的小区选择方法的流程图；6 is a flowchart of a cell selection method provided by another embodiment of the present application;

图7是本申请一个实施例提供的小区选择装置的框图；FIG. 7 is a block diagram of a cell selection apparatus provided by an embodiment of the present application;

图8是本申请一个实施例提供的终端设备的结构示意图。FIG. 8 is a schematic structural diagram of a terminal device provided by an embodiment of the present application.

具体实施方式Detailed ways

为使本申请的目的、技术方案和优点更加清楚，下面将结合附图对本申请实施方式作进一步地详细描述。In order to make the objectives, technical solutions and advantages of the present application clearer, the embodiments of the present application will be further described in detail below with reference to the accompanying drawings.

本申请实施例描述的网络架构以及业务场景是为了更加清楚地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，本领域普通技术人员可知，随着网络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。The network architecture and service scenarios described in the embodiments of the present application are for the purpose of illustrating the technical solutions of the embodiments of the present application more clearly, and do not constitute a limitation on the technical solutions provided by the embodiments of the present application. The evolution of new business scenarios and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

请参考图1，其示出了本申请一个实施例提供的网络架构的示意图。该网络架构可以包括：终端设备10、网络设备20和核心网设备30。Please refer to FIG. 1 , which shows a schematic diagram of a network architecture provided by an embodiment of the present application. The network architecture may include: a terminal device 10 , a network device 20 and a core network device 30 .

终端设备10可以指UE(User Equipment，用户设备)、接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、无线通信设备、用户代理或用户装置。可选地，终端设备10还可以是蜂窝电话、无绳电话、SIP(Session Initiation Protocol，会话启动协议)电话、WLL(Wireless Local Loop，无线本地环路)站、PDA(Personal Digita1 Assistant，个人数字处理)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备，5GS(5th Generation System，第五代移动通信***)中的终端设备或者未来演进的PLMN(Pub1ic Land Mobi1e Network，公用陆地移动通信网络)中的终端设备等，本申请实施例对此并不限定。为方便描述，上面提到的设备统称为终端设备。终端设备10的数量通常为多个，每一个网络设备20所管理的小区内可以分布一个或多个终端设备10。The terminal device 10 may refer to a UE (User Equipment, user equipment), an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a wireless communication device, a user agent or a user equipment. Optionally, the terminal device 10 may also be a cellular phone, a cordless phone, a SIP (Session Initiation Protocol, session initiation protocol) phone, a WLL (Wireless Local Loop, wireless local loop) station, a PDA (Personal Digital Assistant, personal digital processing ), handheld devices with wireless communication functions, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in 5GS (5th Generation System, fifth-generation mobile communication system) or future evolved Terminal equipment in a PLMN (Pub1ic Land Mobi1e Network, public land mobile communication network), etc., are not limited in this embodiment of the present application. For the convenience of description, the devices mentioned above are collectively referred to as terminal devices. The number of terminal devices 10 is usually multiple, and one or more terminal devices 10 may be distributed in a cell managed by each network device 20 .

网络设备20是一种部署在接入网中用以为终端设备10提供无线通信功能的设备。网络设备20可以包括各种形式的宏基站，微基站，中继站，接入点等等。在采用不同的无线接入技术的***中，具备网络设备功能的设备的名称可能会有所不同，例如在5G NR***中，称为gNodeB或者gNB。随着通信技术的演进，“网络设备”这一名称可能会变化。为方便描述，本申请实施例中，上述为终端设备10提供无线通信功能的装置统称为网络设备。可选地，通过网络设备20，终端设备10和核心网设备30之间可以建立通信关系。示例性地，在LTE(Long Term Evolution，长期演进)***中，网络设备20可以是EUTRAN(Evolved Universal Terrestrial Radio Access Network，演进的通用陆地无线网)或者EUTRAN中的一个或者多个eNodeB；在5G NR***中，网络设备20可以是RAN(Radio Access Network，无线接入网)或者RAN中的一个或者多个gNB。在本申请实施例中，所述的网络设备除特别说明之外，是指网络设备20。The network device 20 is a device deployed in an access network to provide a wireless communication function for the terminal device 10 . The network device 20 may include various forms of macro base stations, micro base stations, relay stations, access points, and the like. In systems using different radio access technologies, the names of devices with network device functions may be different, for example, in 5G NR systems, they are called gNodeBs or gNBs. As communications technology evolves, the name "network equipment" may change. For convenience of description, in the embodiments of the present application, the above-mentioned apparatuses for providing a wireless communication function for the terminal device 10 are collectively referred to as network devices. Optionally, through the network device 20, a communication relationship may be established between the terminal device 10 and the core network device 30. Exemplarily, in an LTE (Long Term Evolution, Long Term Evolution) system, the network device 20 may be EUTRAN (Evolved Universal Terrestrial Radio Access Network, Evolved Universal Terrestrial Radio Access Network) or one or more eNodeBs in EUTRAN; in 5G In the NR system, the network device 20 may be a RAN (Radio Access Network, radio access network) or one or more gNBs in the RAN. In the embodiments of the present application, the network device refers to the network device 20 unless otherwise specified.

核心网设备30的功能主要是提供用户连接、对用户的管理以及对业务完成承载，作为承载网络提供到外部网络的接口。例如，5G NR***中的核心网设备可以包括AMF(Access and Mobility Management Function，接入和移动性管理功能)实体、UPF(User Plane Function，用户平面功能)实体和SMF(Session Management Function，会话管理功能)实体等设备。The functions of the core network device 30 are mainly to provide user connection, manage users, and carry out services, and serve as an interface for the bearer network to provide an external network. For example, the core network equipment in the 5G NR system may include AMF (Access and Mobility Management Function) entity, UPF (User Plane Function, user plane function) entity and SMF (Session Management Function, session management function) entity function) entity and other equipment.

在一个示例中，网络设备20与核心网设备30之间通过某种空口技术互相通信，例如5G NR***中的NG接口。网络设备20与终端10之间通过某种空口技术互相通信，例如Uu接口。In an example, the network device 20 and the core network device 30 communicate with each other through some air interface technology, such as the NG interface in the 5G NR system. The network device 20 and the terminal 10 communicate with each other through a certain air interface technology, such as a Uu interface.

本申请实施例中的“5G NR***”也可以称为5G***或者NR***，但本领域技术人员可以理解其含义。本申请实施例描述的技术方案可以适用于5G NR***，也可以适用于5G NR***后续的演进***。The "5G NR system" in the embodiments of this application may also be referred to as a 5G system or an NR system, but those skilled in the art can understand its meaning. The technical solutions described in the embodiments of this application may be applicable to the 5G NR system, and may also be applicable to the subsequent evolution system of the 5G NR system.

通信***通常支持终端设备的切换过程。当需要使用网络服务的用户从一个小区移动到另一个小区，或由于无线传输业务负荷量调整、激活操作维护、设备故障等原因，为了保证通信的连续性和服务的质量，***要将该用户与原小区的通信链路转移到新的小区上，即执行小区切换过程。因此，终端设备可以从第一网络设备的小区切换到第二网络设备的小区。The communication system usually supports the handover procedure of the terminal equipment. When a user who needs to use network services moves from one cell to another, or due to wireless transmission traffic load adjustment, activation operation and maintenance, equipment failure, etc., in order to ensure the continuity of communication and the quality of service, the system will The communication link with the original cell is transferred to the new cell, that is, the cell handover process is performed. Thus, the terminal device can be handed over from the cell of the first network device to the cell of the second network device.

网络切片(简称切片)是一种按需组网的方式，可以让运营商在统一的基础设施上分离出多个虚拟的端到端网络，每个网络切片从无线接入网再到核心网上进行逻辑隔离，以适配各种类型的应用。网络切片属于逻辑的概念，是对资源进行的重组，如根据SLA(Service Level Agreement，服务等级协议)为特定的通信服务类型选定所需要的虚拟机和物理资源。Network slicing (slicing for short) is an on-demand networking method that allows operators to separate multiple virtual end-to-end networks on a unified infrastructure. Each network slice extends from the radio access network to the core network. Logical isolation to suit various types of applications. Network slicing is a logical concept, which is a reorganization of resources, such as selecting virtual machines and physical resources required for a specific communication service type according to SLA (Service Level Agreement).

在相关技术中，当终端设备的AS(Access Stratum，接入层)收到NAS(Non-Access Stratum，非接入层)的切片信息，即S-NSSAI(Single Network Slice Selection Assistance Information，网络切片信息)后，终端设备将S-NSSAI信息通过MSG5消息(空口RRC(Radio Resource Control，无线资源控制))消息，通知给gNB，用于gNB选择合适的AMF(Access and Mobility Management Function，接入和移动性管理实体)提供该切片服务。但是由于MSG5消息是未加密完备的消息，在该消息上携带该切片信息，可能造成切片信息的泄漏，不利于安全保障。在NR中，触发重建的前提是终端设备安全激活，并且至少建立了SRB(Signalling Radio Bearer，信令无线承载)2和至少一个DRB(Data Radio Bearer，数据无线承载)。在NR中，有很多情况可能导致终端设备执行RRC重建，比如切换失败、RLF(Radio Link Failure，无线链路失败)、重配失败等。在初始化重建过程时，终端设备开启T311定时器(一个用于执行小区选择过程的定时器)，按照现有过程进行小区选择。In the related art, when the AS (Access Stratum, access layer) of the terminal device receives the slice information of the NAS (Non-Access Stratum, non-access layer), that is, S-NSSAI (Single Network Slice Selection Assistance Information, network slice information), the terminal device notifies the gNB of the S-NSSAI information through the MSG5 message (air interface RRC (Radio Resource Control, Radio Resource Control)) message for the gNB to select the appropriate AMF (Access and Mobility Management Function, access and Mobility Management Entity) provides the slicing service. However, since the MSG5 message is an unencrypted and complete message, carrying the slice information in the message may cause leakage of the slice information, which is not conducive to security assurance. In NR, the premise of triggering re-establishment is that the terminal device is safely activated, and at least an SRB (Signalling Radio Bearer, signaling radio bearer) 2 and at least one DRB (Data Radio Bearer, data radio bearer) are established. In NR, there are many situations that may cause the terminal device to perform RRC reconstruction, such as handover failure, RLF (Radio Link Failure, radio link failure), and reconfiguration failure. When initializing the re-establishment process, the terminal device starts a T311 timer (a timer for performing a cell selection process), and performs cell selection according to the existing process.

RRC release(Radio Resource Control release，无线资源控制信号)中可以携带重定向信息，包括一个重定向的RAT(Radio Access Technology，无线接入技术)和频点信息。当终端设备离开连接态时，若根据重定向信息，未找到合适的小区(suitable cell)，终端设备执行小区选择过程。若终端设备保存有小区选择的信息，终端设备在保存的频点上寻找是否有合适的小区。若找到该小区，终端设备选择这个小区驻留。若不存在合适的小区，终端设备执行小区重选，即终端设备在对所有支持的NR频段进行扫频，且对每个频点终端设备仅搜索该频点上最强的小区。若找到该小区，终端设备选择这个小区驻留，否则，终端设备进入空闲态。在空闲态下，终端设备执行小区选择过程，去寻找一个合适的小区。若终端设备在所支持的所有RAT的所有频点上搜索后，均未找到合适的小区，终端设备尝试在任意一个RAT上寻找到一个可接受的小区(acceptable cell)去驻留。若终端设备找到可接受的小区，终端设备进入连接态，否则终端设备留在空闲态。The RRC release (Radio Resource Control release, radio resource control signal) can carry redirection information, including a redirected RAT (Radio Access Technology, radio access technology) and frequency point information. When the terminal device leaves the connected state, if no suitable cell is found according to the redirection information, the terminal device performs a cell selection process. If the terminal device stores the cell selection information, the terminal device searches for a suitable cell on the stored frequency point. If the cell is found, the terminal equipment selects this cell to camp on. If there is no suitable cell, the terminal equipment performs cell reselection, that is, the terminal equipment scans all supported NR frequency bands, and for each frequency point the terminal equipment only searches for the strongest cell on that frequency point. If the cell is found, the terminal equipment selects this cell to camp on, otherwise, the terminal equipment enters an idle state. In the idle state, the terminal equipment performs a cell selection process to find a suitable cell. If the terminal equipment does not find a suitable cell after searching on all the frequencies of all the supported RATs, the terminal equipment tries to find an acceptable cell (acceptable cell) on any RAT to camp on. If the terminal device finds an acceptable cell, the terminal device enters the connected state, otherwise the terminal device stays in the idle state.

在相关技术中，在重建的时候，终端设备执行小区选择过程中，只考虑信道质量，不考虑终端设备和小区支持的切片。这可能导致终端设备接入不支持想要的切片的小区后，还需要重新进行小区选择和切换，造成信令开销，业务服务时延等问题。In the related art, during reconstruction, the terminal equipment only considers the channel quality during the cell selection process, and does not consider the slices supported by the terminal equipment and the cell. This may cause the terminal equipment to perform cell selection and handover again after accessing a cell that does not support the desired slice, resulting in signaling overhead, service service delay and other problems.

本申请实施例提供的技术方案，主要在终端设备进行小区切换的过程中，结合小区支持的切片，从而确定终端设备所要切换至的小区，从而避免因为切片不符而造成再次重连的问题，节省了信令开销，减少了业务服务的时延。The technical solutions provided by the embodiments of the present application mainly combine the slices supported by the cell in the process of cell handover by the terminal equipment, so as to determine the cell to which the terminal equipment is to be handed over, thereby avoiding the problem of reconnection caused by the inconsistency of the slices, saving energy The signaling overhead is reduced, and the delay of business services is reduced.

请参考图2，其示出了本申请一个实施例提供的小区选择方法的流程图，该方法可以应用于图1所示的终端设备中。该方法可以包括如下步骤210：Please refer to FIG. 2 , which shows a flowchart of a cell selection method provided by an embodiment of the present application, and the method can be applied to the terminal device shown in FIG. 1 . The method may include the following steps 210:

步骤210，在确定出支持目标切片的第一小区或第一频点之后，执行针对第一小区或对应第一频点的小区的连接过程。Step 210: After determining the first cell or the first frequency that supports the target slice, perform a connection process for the first cell or the cell corresponding to the first frequency.

可选地，第一小区或对应第一频点的小区是合适的或可接受的小区。在一些实施例中，终端设备优先与至少一个频点中，支持目标切片的频点对应的小区连接。在另一些实施例中，终端设备优先与至少一个候选的小区中，支持目标切片的小区连接。在示例性实施例中，候选的小区是位于终端设备附近的小区，如与终端设备之间的距离小于距离阈值的小区。可选地，距离阈值的具体数值由相关技术人员根据实际情况进行设定，本申请实施例对此不作具体限定。在示例性实施例中，候选的小区是终端设备中预先存储了小区标识信息的小区，如终端设备出厂前配置的小区、网络设备发送至终端设备的小区、用户自定义存储的小区等等。可选地，每一小区仅对应一个频点，一个频点可以对应于一个或多个小区。Optionally, the first cell or a cell corresponding to the first frequency point is a suitable or acceptable cell. In some embodiments, the terminal device preferentially connects to a cell corresponding to a frequency point that supports the target slice in at least one frequency point. In other embodiments, the terminal device preferentially connects with a cell that supports the target slice in at least one candidate cell. In an exemplary embodiment, the candidate cells are cells located in the vicinity of the terminal device, such as cells whose distance from the terminal device is less than a distance threshold. Optionally, the specific value of the distance threshold is set by the relevant technical personnel according to the actual situation, which is not specifically limited in this embodiment of the present application. In an exemplary embodiment, the candidate cell is a cell with pre-stored cell identification information in the terminal device, such as a cell configured before the terminal device leaves the factory, a cell sent by the network device to the terminal device, a user-defined storage cell, and so on. Optionally, each cell corresponds to only one frequency point, and one frequency point may correspond to one or more cells.

在一些实施例中，在确定出支持目标切片的第一小区或第一频点之前，由网络设备告知给终端设备各个小区/频点支持的切片(如告知终端设备各个频点支持的切片的标识信息、告知终端设备各个频点支持的切片的类别信息、告知终端设备各个小区支持的切片的标识信息、告知终端设备各个小区支持的切片的类型等等)。例如，在终端设备处于连接态时，网络设备向终端设备发送小区/频点信息，小区/频点信息用于指示各个小区/频点支持的切片。In some embodiments, before determining the first cell or the first frequency that supports the target slice, the network device informs the terminal device of the slices supported by each cell/frequency (for example, notifying the terminal device of the slices supported by each frequency) identification information, type information of the slices supported by each frequency point, inform the terminal equipment of the identification information of the slices supported by each cell, inform the terminal equipment of the types of slices supported by each cell, etc.). For example, when the terminal device is in a connected state, the network device sends cell/frequency point information to the terminal device, where the cell/frequency point information is used to indicate slices supported by each cell/frequency point.

在另一些实施例中，在确定出支持目标切片的第一小区或第一频点之前，终端设备中预先存储有各个小区/频点支持的切片。例如，终端设备在出厂之前配置有各个小区/频点支持的切片；又例如，终端设备接收来自用户的存储操作，存储各个小区/频点支持的切片。In other embodiments, before the first cell or the first frequency point supporting the target slice is determined, the terminal device pre-stores the slices supported by each cell/frequency point. For example, the terminal device is configured with slices supported by each cell/frequency point before leaving the factory; for another example, the terminal device receives a storage operation from the user, and stores the slices supported by each cell/frequency point.

在一些可能的实施例中，确定出了多个支持目标切片的小区/频点，可以选择多个支持目标切片的小区/频点中，对应小区的信道质量最优的小区/频点作为第一小区/第一频点，再执行针对第一小区或对应第一频点的小区的连接过程。In some possible embodiments, multiple cells/frequency points supporting the target slice are determined, and among the multiple cells/frequency points supporting the target slice, the cell/frequency point with the best channel quality of the corresponding cell may be selected as the first cell/frequency point. A cell/first frequency point, and then perform the connection process for the first cell or the cell corresponding to the first frequency point.

在另一些可能的实施例中，确定出了多个支持目标切片的小区/频点，可以选择多个支持目标切片的小区/频点中，对应小区与终端设备之间的距离最短的小区/频点作为第一小区/第一频点，再执行针对第一小区或对应第一频点的小区的连接过程。In other possible embodiments, multiple cells/frequency points supporting the target slice are determined, and among the multiple cells/frequency points supporting the target slice, the cell/frequency point with the shortest distance between the corresponding cell and the terminal device may be selected. The frequency point is used as the first cell/first frequency point, and then the connection process for the first cell or the cell corresponding to the first frequency point is performed.

在另一些可能的实施例中，确定出了多个支持目标切片的小区/频点，依据各个小区/频点对应的优先级，选择其中优先级最高的小区/频点作为第一小区/第一频点，再执行针对第一小区或对应第一频点的小区的连接过程。可选地，优先级预先设置在终端设备中，如终端设备在出厂前配置各个小区/频点对应的优先级；又如，接收来自用户的设置操作，对各个小区/频点对应的优先级进行设置。可选地，各个小区/频点对应的优先级由网络设备配置，如终端设备在连接态时，或RRC release时，或其他过程中，终端设备接收来自网络设备的各个小区/频点对应的优先级。In some other possible embodiments, a plurality of cells/frequency points supporting the target slice are determined, and according to the priority corresponding to each cell/frequency point, the cell/frequency point with the highest priority is selected as the first cell/frequency point. One frequency point, and then perform the connection process for the first cell or the cell corresponding to the first frequency point. Optionally, the priority is preset in the terminal device, for example, the terminal device configures the priority corresponding to each cell/frequency point before leaving the factory; another example, receiving the setting operation from the user, the priority corresponding to each cell/frequency point is configured. Make settings. Optionally, the priority corresponding to each cell/frequency point is configured by the network device. For example, when the terminal device is in the connected state, or during RRC release, or in other processes, the terminal device receives the corresponding cell/frequency point from the network device. priority.

在一些实施例中，在小区选择过程中，终端设备在确定出满足以下条件中的至少一项的情况下，优先选择支持目标切片的第一小区或第一频点进行接入，或者，在确定出支持目标切片的第一小区或第一频点之后执行针对第一小区或对应第一频点的小区的连接过程：终端设备是支持切片的设备、终端设备是特定版本的设备、终端设备是支持特定切片的设备、正在有切片业务或特定切片业务服务、建立了切片对应的会话或特定切片对应的会话、接收过第一指示信息；其中，第一指示信息用于指示终端设备优先选择支持目标切片的第一小区或第一频点进行接入，或者用于指示终端设备在确定出支持目标切片的第一小区或第一频点之后执行针对第一小区或对应第一频点的小区的连接过程。In some embodiments, during the cell selection process, the terminal device preferentially selects the first cell or the first frequency point that supports the target slice for access when it is determined that at least one of the following conditions is satisfied, or, when After determining the first cell or the first frequency point that supports the target slice, perform the connection process for the first cell or the cell corresponding to the first frequency point: the terminal device is a device that supports slicing, the terminal device is a device of a specific version, and the terminal device is a device of a specific version. It is a device that supports a specific slice, is having a slice business or a specific slice business service, has established a session corresponding to a slice or a session corresponding to a specific slice, and has received the first indication information; wherein, the first indication information is used to instruct the terminal device to select the priority The first cell or the first frequency point that supports the target slice is used to access, or used to instruct the terminal device to perform the first cell or the first frequency point corresponding to the first cell after determining the first cell or the first frequency point that supports the target slice. Cell connection process.

在一些实施例中，小区不包括切片信息，则表示该小区不支持切片，则该小区不支持目标切片。在另一些实施例中，小区包括切片信息，基于该切片信息，可以确定该小区支持的切片，进而确定该小区是否支持目标切片，若该小区支持的切片不包括目标切片，则该小区不是第一小区；若该小区支持目标切片，则该小区为第一小区。In some embodiments, if the cell does not include slice information, it means that the cell does not support slices, and the cell does not support the target slice. In other embodiments, the cell includes slice information, and based on the slice information, the slice supported by the cell can be determined, and then it is determined whether the cell supports the target slice. If the slice supported by the cell does not include the target slice, the cell is not the first slice. A cell; if the cell supports the target slice, the cell is the first cell.

在一些实施例中，小区支持的切片由该小区对应的频点决定，若该小区对应的频点没有对应的切片信息，则该频点不是第一频点，该小区不支持切片；若该小区对应的频点支持的切片不包括目标切片，则该频点不是第一频点；若该小区对应的频点支持目标切片，则该频点为第一频点。In some embodiments, the slice supported by a cell is determined by the frequency point corresponding to the cell. If the frequency point corresponding to the cell does not have corresponding slice information, the frequency point is not the first frequency point, and the cell does not support slicing; If the slice supported by the frequency point corresponding to the cell does not include the target slice, the frequency point is not the first frequency point; if the frequency point corresponding to the cell supports the target slice, the frequency point is the first frequency point.

在一些实施例中，支持目标切片的第一频点对应有多个小区，则从第一频点对应的多个小区中，选择一个小区并针对该小区的连接过程。可选地，从第一频点对应的多个小区中，选择距离终端设备最近或信道质量最好的小区执行连接过程。可选地，基于第一频点对应的各个小区的优先级，从第一频点对应的多个小区中，选择优先级最高的小区执行连接过程。在一个示例中，优先级预先设置在终端设备中，如终端设备在出厂前设置有第一频点对应的各个小区的优先级；又如，接收来自用户的设置操作，对第一频点对应的各个小区的优先级进行设置。在另一个示例中，第一频点对应的各个小区的优先级由网络设备配置，如终端设备在连接态时，或RRC release时，或其他过程中，终端设备接收来自于网络设备的第一频点对应的各个小区的优先级。In some embodiments, there are multiple cells corresponding to the first frequency point supporting the target slice, and a cell is selected from the multiple cells corresponding to the first frequency point and a connection process for the cell is performed. Optionally, from a plurality of cells corresponding to the first frequency point, a cell that is closest to the terminal device or has the best channel quality is selected to perform the connection process. Optionally, based on the priorities of the cells corresponding to the first frequency point, a cell with the highest priority is selected from the plurality of cells corresponding to the first frequency point to perform the connection process. In an example, the priority is preset in the terminal device, for example, the terminal device is set with the priority of each cell corresponding to the first frequency point before leaving the factory; in another example, receiving the setting operation from the user, the first frequency point corresponds to The priority of each cell is set. In another example, the priority of each cell corresponding to the first frequency point is configured by the network device. For example, when the terminal device is in the connected state, or during RRC release, or other processes, the terminal device receives the first The priority of each cell corresponding to the frequency point.

在示例性实施例中，目标切片为以下任意一种切片：当前激活的会话对应的切片、当前激活的切片、当前激活的优先级最高的会话对应的切片、当前激活的优先级最高的切片、需求(intended)的切片、需要建立的会话对应的切片、需要建立的切片、特定标识的切片、激活的会话中的至少之一对应的特定切片、需要建立的会话中的至少之一对应的特定切片。In an exemplary embodiment, the target slice is any of the following slices: a slice corresponding to a currently activated session, a currently activated slice, a slice corresponding to a currently activated session with the highest priority, a currently activated slice with the highest priority, Intended slices, slices corresponding to sessions to be established, slices to be established, slices with specific identifiers, specific slices corresponding to at least one of activated sessions, specific slices corresponding to at least one of sessions to be established slice.

在示例性实施例中，目标切片是NAS指示给AS的，或者，目标切片是AS选择的。需要说明的是，由AS选择目标切片，无需NAS与AS进行信令交互，节省信令开销；但是，由于AS不一定能获知业务的所有信息，例如，AS不能获知各个业务的处理优先级(如不能获知优先级最高的业务)，因而由AS选择的目标切片，不一定是最符合业务需求或处理效率的(如不能选择业务优先级最高的切片作为目标切片)，准确率较低。与AS不同的是，NAS能够获知每个切片对应的信息，例如，NAS能够获知各个业务的处理优先级(如能够获知优先级最高的业务)，因而NAS选择并指示给AS的目标切片更符合业务需求和业务处理效率，准确率较高；但是，若由NAS将目标切片指示给AS，需要进行信令交互，增加信令开销。In an exemplary embodiment, the target slice is indicated to the AS by the NAS, or the target slice is selected by the AS. It should be noted that the AS selects the target slice without signaling interaction between the NAS and the AS, which saves signaling overhead; however, since the AS may not know all the information of the service, for example, the AS cannot know the processing priority of each service ( If the service with the highest priority cannot be known), the target slice selected by the AS is not necessarily the one that best meets the service requirements or processing efficiency (for example, the slice with the highest service priority cannot be selected as the target slice), and the accuracy rate is low. Unlike AS, NAS can learn the information corresponding to each slice. For example, NAS can learn the processing priority of each service (for example, it can learn the service with the highest priority), so the target slice that NAS selects and indicates to AS is more suitable Service requirements, service processing efficiency, and accuracy are high; however, if the NAS indicates the target slice to the AS, signaling interaction is required, which increases signaling overhead.

综上所述，由AS选择目标切片，准确率较低但可以节省信令开销；由NAS将目标切片指示给AS，准确率较高但增加了信令开销，这两种方式各有优劣，可以结合实际情况，从中选择合适的方式确定目标切片。To sum up, the AS selects the target slice, which has lower accuracy but can save signaling overhead; the NAS indicates the target slice to the AS, which has higher accuracy but increases signaling overhead. These two methods have their own advantages and disadvantages. , you can choose an appropriate way to determine the target slice according to the actual situation.

在示例性实施例中，第一小区或第一频点的信息是终端设备保存且有效的，如接收并保存的网络设备发送的第一小区或第一频点的信息、预先配置在终端设备中的第一小区或第一频点的信息等等。In an exemplary embodiment, the information of the first cell or the first frequency point is stored and valid by the terminal device, such as the information of the first cell or the first frequency point sent by the received and stored network device, pre-configured in the terminal device information of the first cell or the first frequency point in the , and so on.

在一个示例中，连接过程为连接重建过程，如与除第一小区之外的其他小区断开连接后与第一小区进行连接的过程。在另一个示例中，连接过程为初始化连接的过程，也即，未与任何小区连接过，或在最近的预设时长内未与任何小区连接过的情况下，与某一小区进行连接的过程。可选地，预设时长的具体时长由相关技术人员根据实际情况进行设定，本申请实施例对此不作具体限定。在又一个示例中，在检测到RLF，HO(HandOver，切换)失败，重配失败的时候，若此时AS安全激活，且SRB2和至少一个DRB已经建立，则开始RRC连接重建过程。In one example, the connection process is a connection re-establishment process, such as a process of connecting to the first cell after disconnecting from other cells except the first cell. In another example, the connection process is the process of initializing the connection, that is, the process of connecting with a certain cell without being connected with any cell, or without being connected with any cell within the most recent preset time period . Optionally, the specific duration of the preset duration is set by the relevant technical personnel according to the actual situation, which is not specifically limited in this embodiment of the present application. In another example, when RLF, HO (HandOver, handover) failure and reconfiguration failure are detected, if the AS is safely activated at this time, and the SRB2 and at least one DRB have been established, the RRC connection re-establishment process is started.

综上，本申请实施例提供的技术方案，通过确定出支持目标切片的第一小区或第一频点，终端设备与第一小区或对应第一频点的小区进行连接，从而使得终端设备在执行小区切换的过程中，将是否支持目标切片作为小区选择的优先条件，尽可能地一次切换到位，相比于终端设备接入了不合适的小区之后，还需要重新进行小区选择和切换，本申请实施例有助于节省信令开销，缩短业务服务时延。To sum up, in the technical solutions provided by the embodiments of the present application, by determining the first cell or the first frequency point that supports the target slice, the terminal equipment is connected to the first cell or the cell corresponding to the first frequency point, so that the terminal equipment is in the In the process of performing cell handover, whether the target slice is supported is the priority condition for cell selection, and the handover is in place as much as possible at one time. The embodiments of the application help to save signaling overhead and shorten service service delay.

请参考图3，其示出了本申请另一个实施例提供的小区选择方法的流程图，该方法可以应用于图1所示的终端设备中。该方法可以包括如下步骤(310～330)：Please refer to FIG. 3 , which shows a flowchart of a cell selection method provided by another embodiment of the present application, and the method can be applied to the terminal device shown in FIG. 1 . The method may include the following steps (310-330):

步骤310，启动第一定时器，第一定时器用于终端设备执行小区选择过程。Step 310: Start a first timer, where the first timer is used for the terminal device to perform a cell selection process.

可选地，第一定时器为T311定时器。Optionally, the first timer is a T311 timer.

步骤320，搜索支持目标切片的第一小区或第一频点。Step 320: Search for a first cell or a first frequency point that supports the target slice.

在一些实施例中，搜索支持目标切片的第一小区或第一频点时，搜索范围为至少一个候选的小区。可选地，第一小区或对应第一频点的小区是合适的或可接受的小区。其中，关于候选的小区的介绍可以参见上述图2实施例的内容，此处不再赘述。In some embodiments, when searching for the first cell or the first frequency point supporting the target slice, the search range is at least one candidate cell. Optionally, the first cell or a cell corresponding to the first frequency point is a suitable or acceptable cell. For the introduction of the candidate cells, reference may be made to the content of the above-mentioned embodiment in FIG. 2 , which will not be repeated here.

步骤330，若搜索到第一小区或第一频点，则执行针对第一小区或对应第一频点的小区的连接过程。 Step 330, if the first cell or the first frequency point is searched, a connection process for the first cell or the cell corresponding to the first frequency point is performed.

在一个示例中，连接过程为连接重建过程，如与除第一小区之外的其他小区断开连接后与第一小区进行连接的过程。在另一个示例中，连接过程为初始化连接的过程，也即，未与任何小区连接过，或在最近的预设时长内未与任何小区连接过的情况下，与某一小区进行连接的过程。可选地，预设时长的具体时长由相关技术人员根据实际情况进行设定，本申请实施例对此不作具体限定。在又一个示例中，在检测到RLF，HO失败，重配失败的时候，若此时AS安全激活，且SRB2和至少一个DRB已经建立，则开始RRC连接重建过程。In one example, the connection process is a connection re-establishment process, such as a process of connecting to the first cell after disconnecting from other cells except the first cell. In another example, the connection process is the process of initializing the connection, that is, the process of connecting with a certain cell without being connected with any cell, or without being connected with any cell within the most recent preset time period . Optionally, the specific duration of the preset duration is set by the relevant technical personnel according to the actual situation, which is not specifically limited in this embodiment of the present application. In another example, when RLF, HO failure, or reconfiguration failure is detected, if the AS is safely activated at this time, and the SRB2 and at least one DRB have been established, the RRC connection re-establishment process is started.

可选地，若搜索到第一小区或第一频点，则停止第一定时器。停止第一定时器可以指第一定时器暂停计时但保留计时信息(如最近一次计时的已计时时长)，也可以指第一定时器停止计时并删除计时信息。Optionally, if the first cell or the first frequency point is searched, the first timer is stopped. Stopping the first timer may mean that the first timer suspends the timing but retains the timing information (eg, the counted duration of the latest timing), or may mean that the first timer stops timing and deletes the timing information.

在一些实施例中，若第一定时器超时，则从无线连接的第一状态切换至第二状态。第一定时器超时是指第一定时器计时结束时，仍未搜索到第一小区或第一频点。In some embodiments, the first state of the wireless connection is switched to the second state if the first timer expires. Expiration of the first timer means that when the first timer expires, the first cell or the first frequency point has not yet been searched.

可选地，上述无线连接为RRC连接。可选地，第一状态为连接态，第二状态为空闲态。连接态是指终端与某一个小区保持无线连接的状态，空闲态是指终端不与任何小区(或网络设备)进行无线连接的状态。Optionally, the above-mentioned wireless connection is an RRC connection. Optionally, the first state is a connected state, and the second state is an idle state. The connected state refers to a state in which the terminal maintains a wireless connection with a certain cell, and the idle state refers to a state in which the terminal does not perform wireless connection with any cell (or network device).

综上所述，本申请实施例提供的技术方案中，通过启动第一定时器，在第一定时器的设定时长内搜索支持目标切片的第一小区或第一频点，为搜索过程设定了时长上限，避免了因搜索时间过长而造成的信令开销的浪费，还节省了总体的连接时长。To sum up, in the technical solutions provided by the embodiments of the present application, by starting the first timer, the first cell or the first frequency point supporting the target slice is searched for within the set duration of the first timer, so as to set up the search process. The upper limit of the duration is set, which avoids the waste of signaling overhead caused by too long search time, and also saves the overall connection duration.

在一些实施例中，上述步骤310之后，该方法还包括：若第一定时器超时，则执行针对第二小区或对应第二频点的小区的连接过程，或，驻留在一个不支持目标切片但合适的或可接受的小区上，或，接入一个不支持目标切片但合适的或可接受的小区。驻留是指与对应的小区保持非连接状态。In some embodiments, after the above step 310, the method further includes: if the first timer expires, performing a connection process for the second cell or a cell corresponding to the second frequency, or camping on an unsupported target A slice but a suitable or acceptable cell, or, access a suitable or acceptable cell that does not support the target slice. Camping refers to maintaining a non-connected state with the corresponding cell.

在示例性实施例中，合适的小区为正常通信的小区(如满足信道质量，满足PLMN，没有被barred(禁用)等的小区)。可接受的小区为仅支持受限业务，如紧急业务的小区。In an exemplary embodiment, a suitable cell is a cell for normal communication (eg, a cell that satisfies channel quality, satisfies PLMN, is not barred, etc.). Acceptable cells are cells that only support restricted services, such as emergency services.

在另一些实施例中，合适的小区为正常通信、支持切片但不支持目标切片的小区。可接受的小区为不支持切片的小区。In other embodiments, a suitable cell is a cell that communicates normally, supports slicing but does not support the target slicing. Acceptable cells are cells that do not support slicing.

在示例性实施例中，合适的小区为不支持目标切片的小区中，信道质量最好的小区；可接受的小区为不支持切片的小区中，信道质量最好的小区。In an exemplary embodiment, the suitable cell is the cell with the best channel quality among the cells that do not support the target slicing; the acceptable cell is the cell with the best channel quality among the cells that do not support the slicing.

需要说明的是，以上仅是对合适的小区和可接受的小区的示例性说明，合适的小区和可接受的小区还可以是其他含义，本申请实施例对此不作具体限定。It should be noted that the above is only an exemplary description of a suitable cell and an acceptable cell, and a suitable cell and an acceptable cell may also have other meanings, which are not specifically limited in this embodiment of the present application.

在一些实施例中，上述步骤310之后，该方法还包括：In some embodiments, after the above step 310, the method further includes:

1、若第一定时器超时，则重启第一定时器；1. If the first timer times out, restart the first timer;

2、搜索第二小区或第二频点；2. Search the second cell or the second frequency;

3、若搜索到第二小区或第二频点，则执行针对第二小区或对应第二频点的小区的连接过程；或，驻留在一个不支持目标切片但合适的或可接受的小区上；或，接入一个不支持目标切片但合适的或可接受的小区。驻留是指与对应的小区保持非连接状态。3. If the second cell or the second frequency point is searched, perform the connection process for the second cell or the cell corresponding to the second frequency point; or, camp on a suitable or acceptable cell that does not support the target slice or, access a suitable or acceptable cell that does not support the target slice. Camping refers to maintaining a non-connected state with the corresponding cell.

可选地，第二小区或对应第二频点的小区，是不支持目标切片的小区，和/或，合适的或可接受的小区。也即，第二小区或对应第二频点的小区，是不支持目标切片的小区；或者，第二小区或对应第二频点的小区，是合适的或可接受的小区；或者，第二小区或对应第二频点的小区，是不支持目标切片，且合适的或可接受的小区。Optionally, the second cell or a cell corresponding to the second frequency point is a cell that does not support the target slice, and/or a suitable or acceptable cell. That is, the second cell or the cell corresponding to the second frequency point is a cell that does not support the target slice; or, the second cell or the cell corresponding to the second frequency point is a suitable or acceptable cell; or, the second cell The cell or the cell corresponding to the second frequency point is a suitable or acceptable cell that does not support the target slice.

在示例性实施例中，若搜索到第二小区或第二频点，则停止第一定时器。In an exemplary embodiment, if the second cell or the second frequency point is searched, the first timer is stopped.

在示例性实施例中，若第一定时器超时，则从无线连接的第一状态切换至第二状态。可选地，上述无线连接为RRC连接。可选地，第一状态为连接态，第二状态为空闲态。In an exemplary embodiment, the first state of the wireless connection is switched to the second state if the first timer expires. Optionally, the above-mentioned wireless connection is an RRC connection. Optionally, the first state is a connected state, and the second state is an idle state.

综上所述，本申请实施例提供的技术方案中，第一定时器第一次超时，表示不存在可连接且支持目标切片的第一小区或第一频点，为了维持终端的业务功能，重启第一定时器搜索第二小区或第二频点并连接第二小区或第二频点对应的小区，节省了总体的连接时间，避免了终端的业务功能中断的时间过长。To sum up, in the technical solutions provided by the embodiments of the present application, the first timer times out for the first time, indicating that there is no first cell or first frequency point that can be connected and supports the target slice. In order to maintain the service function of the terminal, Restarting the first timer searches for the second cell or the second frequency point and connects to the second cell or the cell corresponding to the second frequency point, which saves the overall connection time and prevents the service function of the terminal from being interrupted for too long.

请参考图4，其示出了本申请另一个实施例提供的小区选择方法的流程图，该方法可以应用于图1所示的终端设备中。该方法可以包括如下步骤(410～450)：Please refer to FIG. 4 , which shows a flowchart of a cell selection method provided by another embodiment of the present application, and the method can be applied to the terminal device shown in FIG. 1 . The method may include the following steps (410-450):

步骤410，启动第一定时器和第二定时器。 Step 410, start the first timer and the second timer.

其中，第一定时器用于终端设备执行小区选择过程，第二定时器用于终端设备搜索支持目标切片的第一小区或第一频点。可选地，第二定时器的时长小于第一定时器的时长，第一定时器和第二定时器同时启动。可选地，第一小区或对应第一频点的小区是合适的或可接受的小区。Wherein, the first timer is used for the terminal equipment to perform a cell selection process, and the second timer is used for the terminal equipment to search for the first cell or the first frequency point supporting the target slice. Optionally, the duration of the second timer is shorter than the duration of the first timer, and the first timer and the second timer are started simultaneously. Optionally, the first cell or a cell corresponding to the first frequency point is a suitable or acceptable cell.

可选的，第一定时器为T311。Optionally, the first timer is T311.

可选地，第二定时器的时长通过RRC专用信令或者***广播消息配置给终端设备。Optionally, the duration of the second timer is configured to the terminal device through RRC dedicated signaling or a system broadcast message.

步骤420，搜索支持目标切片的第一小区或第一频点。Step 420: Search for a first cell or a first frequency point that supports the target slice.

步骤430，若搜索到第一小区或第一频点，则执行针对第一小区或对应第一频点的小区的连接过程。Step 430: If the first cell or the first frequency point is searched, a connection process for the first cell or the cell corresponding to the first frequency point is performed.

可选地，若搜索到第一小区或第一频点，则停止第二定时器，和/或，停止第一定时器。也即，若搜索到第一小区或第一频点，则停止第一定时器；或者，若搜索到第一小区或第一频点，则停止第二定时器；或者，若搜索到第一小区或第一频点，则停止第一定时器并停止第二定时器。Optionally, if the first cell or the first frequency point is searched, the second timer is stopped, and/or the first timer is stopped. That is, if the first cell or the first frequency point is searched, the first timer is stopped; or, if the first cell or the first frequency point is searched, the second timer is stopped; or, if the first cell or the first frequency point is searched for cell or the first frequency point, stop the first timer and stop the second timer.

步骤440，若第二定时器超时，则搜索第二小区或第二频点。 Step 440, if the second timer times out, search for a second cell or a second frequency point.

步骤450，若搜索到第二小区或第二频点，则执行针对第二小区或对应第二频点的小区的连接过程；或，驻留在一个不支持目标切片但合适的或可接受的小区上；或，接入一个不支持目标切片但合适的或可接受的小区。 Step 450, if the second cell or the second frequency point is searched, the connection process for the second cell or the cell corresponding to the second frequency point is performed; or, if the target slice is not supported but suitable or acceptable or, access a suitable or acceptable cell that does not support the target slice.

有关合适的小区、可接受的小区以及连接过程等内容的相关介绍说明，可参见上文实施例中的相关介绍，此处不再赘述。For relevant introduction and description of suitable cells, acceptable cells, connection procedures, etc., reference may be made to the relevant introductions in the above embodiments, and details are not repeated here.

可选地，若搜索到第二小区或第二频点，则停止第一定时器。Optionally, if the second cell or the second frequency point is searched, the first timer is stopped.

可选地，若第一定时器超时，则从无线连接的第一状态切换至第二状态。可选地，上述无线连接为RRC连接。可选地，第一状态为连接态，第二状态为空闲态。Optionally, if the first timer times out, switching from the first state of the wireless connection to the second state. Optionally, the above-mentioned wireless connection is an RRC connection. Optionally, the first state is a connected state, and the second state is an idle state.

综上所述，本申请实施例提供的技术方案中，通过同时启动第一定时器和第二定时器，小区选择和搜索支持目标切片的第一小区或第一频点同步进行，优先连接第二定时器搜索到的第一小区或对应第一频点的小区；若未能在第二定时器超时之前搜索到支持目标切片的第一小区或第一频点，还可以在第一定时器超时之前连接搜索到的第二小区或对应第二频点的小区，节省了搜索时间和整体的连接时间，提升了连接效率。To sum up, in the technical solutions provided by the embodiments of the present application, by starting the first timer and the second timer at the same time, the cell selection and the search for the first cell or the first frequency point supporting the target slice are performed synchronously, and the first cell or the first frequency point that supports the target slice is preferentially connected. The first cell or the cell corresponding to the first frequency point searched by the second timer; if the first cell or the first frequency point that supports the target slice cannot be searched before the second timer expires, the Connecting to the searched second cell or the cell corresponding to the second frequency point before the timeout saves the search time and the overall connection time, and improves the connection efficiency.

请参考图5，其示出了本申请另一个实施例提供的小区选择方法的流程图，该方法可以应用于图1所示的终端设备中。该方法可以包括如下步骤(510～530)：Please refer to FIG. 5 , which shows a flowchart of a cell selection method provided by another embodiment of the present application, and the method can be applied to the terminal device shown in FIG. 1 . The method may include the following steps (510-530):

步骤510，启动第二定时器。 Step 510, start a second timer.

其中，第二定时器用于终端设备搜索支持目标切片的第一小区或第一频点。可选地，第一小区或对应第一频点的小区是合适的或可接受的小区。The second timer is used by the terminal device to search for the first cell or the first frequency point that supports the target slice. Optionally, the first cell or a cell corresponding to the first frequency point is a suitable or acceptable cell.

步骤520，搜索支持目标切片的第一小区或第一频点。Step 520: Search for a first cell or a first frequency point that supports the target slice.

步骤530，若搜索到第一小区或第一频点，则执行针对第一小区或对应第一小区的频点的连接过程。 Step 530, if the first cell or the first frequency point is searched, a connection process for the first cell or the frequency point corresponding to the first cell is performed.

可选地，若搜索到第一小区或第一频点，则停止第二定时器。Optionally, if the first cell or the first frequency point is searched, the second timer is stopped.

步骤540，若第二定时器超时，则启动第一定时器，第一定时器用于终端设备执行小区选择过程。 Step 540, if the second timer times out, start the first timer, and the first timer is used for the terminal device to perform the cell selection process.

可选的，第一定时器为T311。Optionally, the first timer is T311.

步骤550，搜索第二小区或第二频点。 Step 550, search for a second cell or a second frequency point.

步骤560，若搜索到第二小区或第二频点，则执行针对第二小区或对应第二频点的小区的连接过程；或，驻留在一个不支持目标切片但合适的或可接受的小区上；或，接入一个不支持目标切片但合适的或可接受的小区。 Step 560, if the second cell or the second frequency point is searched, execute the connection process for the second cell or the cell corresponding to the second frequency point; or, access a suitable or acceptable cell that does not support the target slice.

综上所述，本申请实施例提供的技术方案中，通过先启动第二定时器，对支持目标切片的第一小区或第一频点进行搜索，若第二定时器超时，再启动第一定时器搜索第二小区和第二频点；若第二定时器未超时，则第一定时器无需再启动，相比于同步启动第一定时器和第二定时器，节省了处理资源。To sum up, in the technical solutions provided by the embodiments of the present application, the first cell or the first frequency point supporting the target slice is searched by first starting the second timer, and if the second timer times out, the first The timer searches for the second cell and the second frequency point; if the second timer does not expire, the first timer does not need to be restarted, which saves processing resources compared to synchronously starting the first timer and the second timer.

请参考图6，其示出了本申请另一个实施例提供的小区选择方法的流程图，该方法可以应用于图1所示的终端设备中。该方法可以包括如下步骤(610～620)：Please refer to FIG. 6 , which shows a flowchart of a cell selection method provided by another embodiment of the present application, and the method can be applied to the terminal device shown in FIG. 1 . The method may include the following steps (610-620):

步骤610，在终端设备从第一通信***的小区切换到第二通信***的小区的情况下，接收来自网络设备的切换命令。 Step 610, in the case that the terminal device is handed over from the cell of the first communication system to the cell of the second communication system, receive a handover command from the network device.

在示例性实施例中，切换命令为MobilityFromEUTRACommand。In an exemplary embodiment, the handover command is MobilityFromEUTRACommand.

在示例性实施例中，切换命令(如MobilityFromEUTRACommand)中包括目标切片的标识信息和/或目标切片对应的频率信息，终端设备通过接收并识别网络设备发送的切换命令，即可确定目标切片。可选地，目标切片对应的频率信息为目标切片对应的频点，也即表示该频点或该频点对应的小区支持目标切片。In an exemplary embodiment, the handover command (eg MobilityFromEUTRACommand) includes identification information of the target slice and/or frequency information corresponding to the target slice, and the terminal device can determine the target slice by receiving and identifying the handover command sent by the network device. Optionally, the frequency information corresponding to the target slice is the frequency point corresponding to the target slice, which means that the frequency point or the cell corresponding to the frequency point supports the target slice.

可选地，从第一通信***的小区切换到第二通信***的小区，是因目标切片的业务需求引起的，如因目标切片的业务需求引起的inter-RAT(inter Radio Access Technology，***间无线接入技术)切换。也即，第一通信***的小区不支持或不再支持目标切片，而终端设备存在与支持目标切片的小区连接的业务需求(即终端设备需要连接到支持目标切片的小区)，因而终端设备执行从第一通信***的小区切换到第二通信***的小区的过程。在一个示例中，第一通信***为LTE(Long Term Evolution，长期演进)***，第二通信***为NR***，LTE***中不包括业务所需的目标切片，NR***中包括业务所需的目标切片，因而终端设备需要从已连接的LTE***的小区，切换到与NR***的小区连接。Optionally, switching from the cell of the first communication system to the cell of the second communication system is caused by the service requirements of the target slice, such as the inter-RAT (inter Radio Access Technology, inter-system) caused by the service requirements of the target slice. radio access technology) handover. That is, the cell of the first communication system does not support or no longer supports the target slice, and the terminal device has a service requirement to connect with the cell supporting the target slice (that is, the terminal device needs to connect to the cell supporting the target slice), so the terminal device executes A process of handover from a cell of a first communication system to a cell of a second communication system. In an example, the first communication system is an LTE (Long Term Evolution, Long Term Evolution) system, the second communication system is an NR system, the LTE system does not include target slices required by services, and the NR system includes targets required by services Slices, so the terminal device needs to switch from the connected cell of the LTE system to the connection to the cell of the NR system.

步骤620，在小区切换失败的情况下，尝试在目标切片对应的频率上进行小区选择，或者搜索支持目标切片的合适小区驻留，或者在目标切片对应的频率所对应的小区上执行连接建立过程，或者在目标切片对应的小区上执行连接建立过程。 Step 620, in the case of cell handover failure, try to perform cell selection on the frequency corresponding to the target slice, or search for a suitable cell that supports the target slice to camp on, or perform a connection establishment process on the cell corresponding to the frequency corresponding to the target slice , or perform the connection establishment process on the cell corresponding to the target slice.

可选地，尝试在目标切片对应的频率上进行小区选择，或者搜索支持目标切片的合适小区驻留之后，还包括：若未选择或搜索到相应小区，则执行小区选择过程，搜索到合适的或可接受的小区驻留或发起连接建立过程。Optionally, after attempting to perform cell selection on the frequency corresponding to the target slice, or after searching for a suitable cell that supports the target slice to camp on, the method further includes: if the corresponding cell is not selected or searched for, performing a cell selection process, and searching for a suitable cell. or acceptable cells to camp on or initiate a connection establishment procedure.

有关合适的小区、可接受的小区等内容的相关介绍说明，可参见上文实施例中的相关介绍，此处不再赘述。For the relevant introduction and description of the content of the suitable cell, the acceptable cell, etc., reference may be made to the relevant introduction in the above embodiment, and details are not repeated here.

综上所述，本申请实施例提供的技术方案中，通过接收网络设备发送的切换命令，对小区进行选择，从而切换到不同通信***的小区，从而使得通信***尽可能地符合终端设备的业务需求，提升了终端设备的业务处理能力。To sum up, in the technical solutions provided by the embodiments of this application, a cell is selected by receiving a handover command sent by a network device, so as to switch to a cell of a different communication system, so that the communication system conforms to the service of the terminal device as much as possible. requirements, and improve the service processing capability of terminal equipment.

下述为本申请装置实施例，可以用于执行本申请方法实施例。对于本申请装置实施例中未披露的细节，请参照本申请方法实施例。The following are apparatus embodiments of the present application, which can be used to execute the method embodiments of the present application. For details not disclosed in the device embodiments of the present application, please refer to the method embodiments of the present application.

请参考图7，其示出了本申请一个实施例提供的小区选择装置的框图。该装置具有实现上述小区选择方法示例的功能，所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。该装置可以是上文介绍的终端设备，也可以设置在终端设备中。如图7所示，该装置700可以包括：小区连接模块710。Please refer to FIG. 7 , which shows a block diagram of a cell selection apparatus provided by an embodiment of the present application. The apparatus has the function of implementing the above example of the cell selection method, and the function may be implemented by hardware or by executing corresponding software in hardware. The apparatus may be the terminal device described above, or may be set in the terminal device. As shown in FIG. 7 , the apparatus 700 may include: a cell connection module 710 .

所述小区连接模块710，用于在确定出支持目标切片的第一小区或第一频点之后，执行针对所述第一小区或对应所述第一频点的小区的连接过程。The cell connection module 710 is configured to perform a connection process for the first cell or a cell corresponding to the first frequency after determining the first cell or the first frequency that supports the target slice.

综上所述，本申请实施例提供的技术方案，通过确定出支持目标切片的第一小区或第一频点，终端设备与第一小区或对应第一频点的小区进行连接，从而使得终端设备在执行小区切换的过程中，将是否支持目标切片作为小区选择的优先条件，尽可能地一次切换到位，相比于终端设备接入了不合适的小区之后，还需要重新进行小区选择和切换，本申请实施例有助于节省信令开销，缩短业务服务时延。To sum up, in the technical solutions provided by the embodiments of the present application, by determining the first cell or the first frequency that supports the target slice, the terminal device is connected to the first cell or the cell corresponding to the first frequency, so that the terminal In the process of performing cell handover, the device regards whether the target slice is supported as the priority condition for cell selection, and handovers in place as much as possible at one time. Compared with the terminal device that accesses an inappropriate cell, cell selection and handover need to be performed again. , the embodiments of the present application help to save signaling overhead and shorten service service delay.

在示例性实施例中，所述小区连接模块710，用于：In an exemplary embodiment, the cell connection module 710 is used to:

启动第一定时器，所述第一定时器用于所述终端设备执行小区选择过程；starting a first timer, where the first timer is used by the terminal device to perform a cell selection process;

搜索支持所述目标切片的第一小区或第一频点；searching for a first cell or a first frequency point that supports the target slice;

若搜索到所述第一小区或第一频点，则执行针对所述第一小区或对应所述第一频点的小区的连接过程。If the first cell or the first frequency point is searched, a connection process for the first cell or the cell corresponding to the first frequency point is performed.

在示例性实施例中，所述小区连接模块710，还用于：In an exemplary embodiment, the cell connection module 710 is further configured to:

若搜索到所述第一小区或第一频点，则停止所述第一定时器。If the first cell or the first frequency point is found, the first timer is stopped.

若所述第一定时器超时，则从无线连接的第一状态切换至第二状态；或者，若所述第一定时器超时，则执行针对第二小区或对应第二频点的小区的连接过程，或，驻留在一个不支持所述目标切片但合适的或可接受的小区上，或，接入一个不支持所述目标切片但合适的或可接受的小区。If the first timer times out, switch from the first state of the wireless connection to the second state; or, if the first timer times out, execute the connection to the second cell or the cell corresponding to the second frequency point The process, either, camps on a suitable or acceptable cell that does not support the target slice, or accesses a suitable or acceptable cell that does not support the target slice.

若所述第一定时器超时，则重启所述第一定时器；If the first timer times out, restarting the first timer;

搜索第二小区或第二频点；Search for the second cell or the second frequency;

若搜索到所述第二小区或第二频点，则执行针对所述第二小区或对应所述第二频点的小区的连接过程。If the second cell or the second frequency point is searched, a connection process for the second cell or the cell corresponding to the second frequency point is performed.

若搜索到所述第二小区或第二频点，则停止所述第一定时器。If the second cell or the second frequency point is searched, the first timer is stopped.

若所述第一定时器超时，则从无线连接的第一状态切换至第二状态。If the first timer times out, switching from the first state of the wireless connection to the second state.

启动第一定时器和第二定时器，所述第一定时器用于所述终端设备执行小区选择过程，所述第二定时器用于所述终端设备搜索支持所述目标切片的第一小区或第一频点；Start a first timer and a second timer, where the first timer is used by the terminal device to perform a cell selection process, and the second timer is used by the terminal device to search for a first cell or a first cell that supports the target slice. a frequency

在示例性实施例中，所述第二定时器的时长小于所述第一定时器的时长。In an exemplary embodiment, the duration of the second timer is less than the duration of the first timer.

若搜索到所述第一小区或第一频点，则停止所述第二定时器，和/或，停止所述第一定时器。If the first cell or the first frequency point is found, the second timer is stopped, and/or the first timer is stopped.

若所述第二定时器超时，则搜索第二小区或第二频点；If the second timer times out, searching for a second cell or a second frequency point;

启动第二定时器，所述第二定时器用于所述终端设备搜索支持所述目标切片的第一小区或第一频点；starting a second timer, where the second timer is used by the terminal device to search for a first cell or a first frequency point that supports the target slice;

若搜索到所述第一小区或第一频点，则执行针对所述第一小区或对应所述第一小区的频点的连接过程。If the first cell or the first frequency point is searched, a connection process for the first cell or the frequency point corresponding to the first cell is performed.

若搜索到所述第一小区或第一频点，则停止所述第二定时器。If the first cell or the first frequency point is searched, the second timer is stopped.

若所述第二定时器超时，则启动第一定时器，所述第一定时器用于所述终端设备执行小区选择过程；If the second timer times out, start a first timer, where the first timer is used for the terminal device to perform a cell selection process;

在示例性实施例中，所述第二定时器的时长通过无线资源控制RRC专用信令或者***广播消息配置给所述终端设备。In an exemplary embodiment, the duration of the second timer is configured to the terminal device through a radio resource control RRC dedicated signaling or a system broadcast message.

在示例性实施例中，所述第一状态为连接态，所述第二状态为空闲态。In an exemplary embodiment, the first state is a connected state and the second state is an idle state.

在示例性实施例中，所述第二小区或对应所述第二频点的小区，是不支持所述目标切片，和/或合适的或可接受的小区。In an exemplary embodiment, the second cell or a cell corresponding to the second frequency point is a cell that does not support the target slice and/or is a suitable or acceptable cell.

在示例性实施例中，所述第一小区或对应所述第一频点的小区是合适的或可接受的小区。In an exemplary embodiment, the first cell or a cell corresponding to the first frequency point is a suitable or acceptable cell.

在示例性实施例中，在小区选择过程中，所述终端设备在确定出满足以下条件中的至少一项的情况下，优先选择支持所述目标切片的第一小区或第一频点进行接入，或者，在确定出支持所述目标切片的第一小区或第一频点之后执行针对所述第一小区或对应所述第一频点的小区的连接过程：所述终端设备是支持切片的设备、所述终端设备是特定版本的设备、所述终端设备是支持特定切片的设备、正在有切片业务或特定切片业务服务、建立了切片对应的会话或特定切片对应的会话、接收过第一指示信息；其中，所述第一指示信息用于指示所述终端设备优先选择支持所述目标切片的第一小区或第一频点进行接入，或者用于指示所述终端设备在确定出支持所述目标切片的第一小区或第一频点之后执行针对所述第一小区或对应所述第一频点的小区的连接过程。In an exemplary embodiment, during the cell selection process, the terminal device preferentially selects a first cell or a first frequency point that supports the target slice under the condition that at least one of the following conditions is satisfied for connection or, after determining the first cell or the first frequency point that supports the target slice, perform a connection process for the first cell or the cell corresponding to the first frequency point: the terminal device supports the slice device, the terminal device is a device of a specific version, the terminal device is a device that supports a specific slice, is having a slice business or a specific slice business service, has established a session corresponding to a slice or a session corresponding to a specific slice, has received the first Indication information; wherein the first indication information is used to instruct the terminal device to preferentially select a first cell or a first frequency point that supports the target slice for access, or to instruct the terminal device to determine After supporting the first cell or the first frequency point of the target slice, a connection procedure for the first cell or the cell corresponding to the first frequency point is performed.

在示例性实施例中，所述目标切片为以下任意一种切片：当前激活的会话对应的切片、当前激活的切片、当前激活的优先级最高的会话对应的切片、当前激活的优先级最高的切片、需求的切片、需要建立的会话对应的切片、需要建立的切片、特定标识的切片、激活的会话中的至少之一对应的特定切片、需要建立的会话中的至少之一对应的特定切片。In an exemplary embodiment, the target slice is any one of the following slices: a slice corresponding to a currently activated session, a currently activated slice, a slice corresponding to a currently activated session with the highest priority, a currently activated session with the highest priority Slices, required slices, slices corresponding to sessions to be established, slices to be established, slices with specific identifiers, specific slices corresponding to at least one of activated sessions, and specific slices corresponding to at least one of sessions to be established .

在示例性实施例中，所述目标切片是非接入层NAS指示给接入层AS的，或者，所述目标切片是AS选择的。In an exemplary embodiment, the target slice is indicated to the access stratum AS by the non-access stratum NAS, or the target slice is selected by the AS.

在示例性实施例中，所述第一小区或所述第一频点的信息是所述终端设备保存且有效的。In an exemplary embodiment, the information of the first cell or the first frequency point is saved and valid by the terminal device.

在示例性实施例中，所述连接过程为连接重建过程。In an exemplary embodiment, the connection process is a connection re-establishment process.

在示例性实施例中，所述装置700还包括：命令接收模块720。In an exemplary embodiment, the apparatus 700 further includes: a command receiving module 720 .

所述命令接收模块720，用于在所述终端设备从第一通信***的小区切换到第二通信***的小区的情况下，接收来自网络设备的切换命令。The command receiving module 720 is configured to receive a handover command from a network device when the terminal device is handed over from a cell of the first communication system to a cell of the second communication system.

所述小区连接模块710，还用于：在小区切换失败的情况下，尝试在所述目标切片对应的频率上进行小区选择，或者搜索支持所述目标切片的合适小区驻留，或者在所述目标切片对应的频率所对应的小区上执行连接建立过程，或者在所述目标切片对应的小区上执行连接建立过程。The cell connection module 710 is further configured to: in the case of cell handover failure, try to perform cell selection on the frequency corresponding to the target slice, or search for a suitable cell to support the target slice to camp on, or The connection establishment process is performed on the cell corresponding to the frequency corresponding to the target slice, or the connection establishment process is performed on the cell corresponding to the target slice.

若未选择或搜索到相应小区，则执行小区选择过程，搜索到合适的或可接受的小区驻留。If no corresponding cell is selected or searched, a cell selection process is performed to search for a suitable or acceptable cell to camp on.

在示例性实施例中，所述切换命令中包括所述目标切片的标识信息和/或所述目标切片对应的频率信息。In an exemplary embodiment, the switching command includes identification information of the target slice and/or frequency information corresponding to the target slice.

在示例性实施例中，从所述第一通信***的小区切换到所述第二通信***的小区，是因所述目标切片的业务需求引起的。In an exemplary embodiment, the handover from the cell of the first communication system to the cell of the second communication system is caused by the traffic requirements of the target slice.

需要说明的一点是，上述实施例提供的装置在实现其功能时，仅以上述各个功能模块的划分进行举例说明，实际应用中，可以根据实际需要而将上述功能分配由不同的功能模块完成，即将设备的内容结构划分成不同的功能模块，以完成以上描述的全部或者部分功能。It should be noted that, when the device provided in the above embodiment realizes its functions, only the division of the above functional modules is used as an example for illustration. In practical applications, the above functions can be allocated to different functional modules according to actual needs. That is, the content structure of the device is divided into different functional modules to complete all or part of the functions described above.

关于上述实施例中的装置，其中各个模块执行操作的具体方式已经在有关该方法的实施例中进行了详细描述，此处将不做详细阐述说明。Regarding the apparatus in the above-mentioned embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment of the method, and will not be described in detail here.

请参考图8，其示出了本申请一个实施例提供的终端设备80的结构示意图。该终端设备80可以包括：处理器81、存储器82和总线83。Please refer to FIG. 8 , which shows a schematic structural diagram of a terminal device 80 provided by an embodiment of the present application. The terminal device 80 may include: a processor 81 , a memory 82 and a bus 83 .

处理器81包括一个或者一个以上处理核心，处理器81通过运行软件程序以及模块，从而执行各种功能应用以及信息处理。The processor 81 includes one or more processing cores, and the processor 81 executes various functional applications and information processing by running software programs and modules.

存储器82通过总线83与处理器81相连。The memory 82 is connected to the processor 81 through a bus 83 .

存储器82可用于存储计算机程序，处理器81用于执行该计算机程序，以实现上述方法实施例中终端设备执行的各个步骤。The memory 82 can be used to store a computer program, and the processor 81 is used to execute the computer program, so as to implement each step performed by the terminal device in the above method embodiments.

此外，存储器82可以由任何类型的易失性或非易失性存储设备或者它们的组合实现，易失性或非易失性存储设备包括但不限于：RAM(Random-Access Memory，随机存储器)和ROM(Read-Only Memory，只读存储器)、EPROM(Erasable Programmable Read-Only Memory，可擦写可编程只读存储器)、EEPROM(Electrically Erasable Programmable Read-Only Memory，电可擦写可编程只读存储器)、闪存或其他固态存储其技术，CD-ROM(Compact Disc Read-Only Memory，只读光盘)、DVD(Digital Video Disc，高密度数字视频光盘)或其他光学存储、磁带盒、磁带、磁盘存储或其他磁性存储设备。In addition, the memory 82 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, and the volatile or non-volatile storage device includes but is not limited to: RAM (Random-Access Memory, random access memory) and ROM (Read-Only Memory), EPROM (Erasable Programmable Read-Only Memory, Erasable Programmable Read-Only Memory), EEPROM (Electrically Erasable Programmable Read-Only Memory, Electrically Erasable Programmable Read-Only Memory) memory), flash memory or other solid-state storage technology, CD-ROM (Compact Disc Read-Only Memory), DVD (Digital Video Disc, high-density digital video disc) or other optical storage, tape cassettes, magnetic tapes, magnetic disks storage or other magnetic storage devices.

所述处理器81，用于在确定出支持目标切片的第一小区或第一频点之后，执行针对所述第一小区或对应所述第一频点的小区的连接过程。The processor 81 is configured to perform a connection process for the first cell or a cell corresponding to the first frequency after determining the first cell or the first frequency that supports the target slice.

在示例性实施例中，所述处理器81，用于：In an exemplary embodiment, the processor 81 is used to:

在示例性实施例中，所述处理器81，还用于：In an exemplary embodiment, the processor 81 is further configured to:

若所述第一定时器超时，则从无线连接的第一状态切换至第二状态；If the first timer times out, switching from the first state of the wireless connection to the second state;

或者，or,

若所述第一定时器超时，则执行针对第二小区或对应第二频点的小区的连接过程，或，驻留在一个不支持所述目标切片但合适的或可接受的小区上，或，接入一个不支持所述目标切片但合适的或可接受的小区。If the first timer expires, perform a connection procedure for the second cell or a cell corresponding to the second frequency point, or camp on a suitable or acceptable cell that does not support the target slice, or , access a suitable or acceptable cell that does not support the target slice.

在示例性实施例中，所述第二小区或对应所述第二频点的小区，是不支持所述目标切片，和/或但合适的或可接受的小区。In an exemplary embodiment, the second cell or a cell corresponding to the second frequency point is a cell that does not support the target slice and/or is suitable or acceptable.

在示例性实施例中，在小区选择过程中，所述终端设备在确定出满足以下条件中的至少一项的情况下，优先选择支持所述目标切片的第一小区或第一频点进行接入，或者，在确定出支持所述目标切片的第一小区或第一频点之后执行针对所述第一小区或对应所述第一频点的小区的连接过程：所述终端设备是支持切片的设备、所述终端设备是特定版本的设备、所述终端设备是支持特定切片的设备、正在有切片业务或特定切片业务服务、建立了切片对应的会话或特定切片对应的会话、接收过第一指示信息；其中，所述第一指示信息用于指示所述终端设备优先选择支持所述目标切片的第一小区或第一频点进行接入，或者用于指示所述终端设备在确定出支持所述目标切片的第一小区或第一频点之后执行针对所述第一小区或对应所述第一频点的小区的连接过程。In an exemplary embodiment, during the cell selection process, the terminal device preferentially selects a first cell or a first frequency point that supports the target slice for connection when it is determined that at least one of the following conditions is satisfied. or, after determining the first cell or the first frequency point that supports the target slice, perform the connection process for the first cell or the cell corresponding to the first frequency point: the terminal device supports the slice device, the terminal device is a device of a specific version, the terminal device is a device that supports a specific slice, is having a slice business or a specific slice business service, has established a session corresponding to a slice or a session corresponding to a specific slice, has received the first Indication information; wherein the first indication information is used to instruct the terminal device to preferentially select a first cell or a first frequency point that supports the target slice for access, or to instruct the terminal device to determine After supporting the first cell or the first frequency point of the target slice, a connection procedure for the first cell or the cell corresponding to the first frequency point is performed.

在示例性实施例中，所述终端设备还包括与所述处理器81相连的收发器84，所述收发器84可以包括接收器85和发射器86；其中：In an exemplary embodiment, the terminal device further includes a transceiver 84 connected to the processor 81, and the transceiver 84 may include a receiver 85 and a transmitter 86; wherein:

所述收发器84，用于在所述终端设备从第一通信***的小区切换到第二通信***的小区的情况下，接收来自网络设备的切换命令；The transceiver 84 is configured to receive a handover command from a network device when the terminal device is handed over from a cell of the first communication system to a cell of the second communication system;

所述处理器81，还用于在小区切换失败的情况下，尝试在所述目标切片对应的频率上进行小区选择，或者搜索支持所述目标切片的合适小区驻留，或者在所述目标切片对应的频率所对应的小区上执行连接建立过程，或者在所述目标切片对应的小区上执行连接建立过程。The processor 81 is further configured to attempt to perform cell selection on the frequency corresponding to the target slice in the case of cell handover failure, or search for a suitable cell to support the target slice to camp on, or to camp on the target slice. The connection establishment process is performed on the cell corresponding to the corresponding frequency, or the connection establishment process is performed on the cell corresponding to the target slice.

本申请实施例还提供了一种计算机可读存储介质，所述存储介质中存储有计算机程序，所述计算机程序用于被网络设备的处理器执行，以实现上述小区选择方法。Embodiments of the present application further provide a computer-readable storage medium, where a computer program is stored in the storage medium, and the computer program is configured to be executed by a processor of a network device to implement the above cell selection method.

本申请实施例还提供了一种芯片，所述芯片包括可编程逻辑电路和/或程序指令，当所述芯片在网络设备上运行时，用于实现上述小区选择方法。Embodiments of the present application further provide a chip, where the chip includes a programmable logic circuit and/or program instructions, and when the chip runs on a network device, it is used to implement the above cell selection method.

本申请实施例还提供了一种计算机程序产品，当所述计算机程序产品在终端设备的处理器上运行时，使得终端设备执行上述小区选择方法。The embodiment of the present application also provides a computer program product, which when the computer program product runs on the processor of the terminal device, enables the terminal device to execute the above cell selection method.

本领域技术人员应该可以意识到，在上述一个或多个示例中，本申请实施例所描述的功能可以用硬件、软件、固件或它们的任意组合来实现。当使用软件实现时，可以将这些功能存储在计算机可读介质中或者作为计算机可读介质上的一个或多个指令或代码进行传输。计算机可读介质包括计算机存储介质和通信介质，其中通信介质包括便于从一个地方向另一个地方传送计算机程序的任何介质。存储介质可以是通用或专用计算机能够存取的任何可用介质。Those skilled in the art should realize that, in one or more of the above examples, the functions described in the embodiments of the present application may be implemented by hardware, software, firmware, or any combination thereof. When implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage medium can be any available medium that can be accessed by a general purpose or special purpose computer.

以上所述仅为本申请的示例性实施例，并不用以限制本申请，凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。The above are only exemplary embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the protection of the present application. within the range.

Claims

一种小区选择方法，其特征在于，应用于终端设备，所述方法包括：A cell selection method, characterized in that it is applied to terminal equipment, the method comprising:

在确定出支持目标切片的第一小区或第一频点之后，执行针对所述第一小区或对应所述第一频点的小区的连接过程。After the first cell or the first frequency point supporting the target slice is determined, a connection process for the first cell or the cell corresponding to the first frequency point is performed.
根据权利要求1所述的方法，其特征在于，所述在确定出支持目标切片的第一小区或第一频点之后，执行针对所述第一小区或对应所述第一频点的小区的连接过程，包括：The method according to claim 1, wherein after the first cell or the first frequency point supporting the target slice is determined, performing the first cell or the cell corresponding to the first frequency point The connection process, including:

启动第一定时器，所述第一定时器用于所述终端设备执行小区选择过程；starting a first timer, where the first timer is used by the terminal device to perform a cell selection process;

搜索支持所述目标切片的第一小区或第一频点；searching for a first cell or a first frequency point that supports the target slice;

若搜索到所述第一小区或第一频点，则执行针对所述第一小区或对应所述第一频点的小区的连接过程。If the first cell or the first frequency point is searched, a connection process for the first cell or the cell corresponding to the first frequency point is performed.
根据权利要求2所述的方法，其特征在于，所述方法还包括：The method according to claim 2, wherein the method further comprises:

若搜索到所述第一小区或第一频点，则停止所述第一定时器。If the first cell or the first frequency point is found, the first timer is stopped.
根据权利要求2或3所述的方法，其特征在于，所述启动第一定时器之后，还包括：The method according to claim 2 or 3, wherein after starting the first timer, the method further comprises:

若所述第一定时器超时，则从无线连接的第一状态切换至第二状态；If the first timer times out, switching from the first state of the wireless connection to the second state;

或者，or,

若所述第一定时器超时，则执行针对第二小区或对应第二频点的小区的连接过程，或，驻留在一个不支持所述目标切片但合适的或可接受的小区上，或，接入一个不支持所述目标切片但合适的或可接受的小区。If the first timer expires, perform a connection procedure for the second cell or a cell corresponding to the second frequency point, or camp on a suitable or acceptable cell that does not support the target slice, or , access a suitable or acceptable cell that does not support the target slice.
根据权利要求2或3所述的方法，其特征在于，所述启动第一定时器之后，还包括：The method according to claim 2 or 3, wherein after starting the first timer, the method further comprises:

若所述第一定时器超时，则重启所述第一定时器；If the first timer times out, restarting the first timer;

搜索第二小区或第二频点；Search for the second cell or the second frequency;

若搜索到所述第二小区或第二频点，则执行针对所述第二小区或对应所述第二频点的小区的连接过程。If the second cell or the second frequency point is searched, a connection process for the second cell or the cell corresponding to the second frequency point is performed.
根据权利要求5所述的方法，其特征在于，所述方法还包括：The method according to claim 5, wherein the method further comprises:

若搜索到所述第二小区或第二频点，则停止所述第一定时器。If the second cell or the second frequency point is searched, the first timer is stopped.
根据权利要求5或6所述的方法，其特征在于，所述重启所述第一定时器之后，还包括：The method according to claim 5 or 6, wherein after restarting the first timer, the method further comprises:

若所述第一定时器超时，则从无线连接的第一状态切换至第二状态。If the first timer times out, switching from the first state of the wireless connection to the second state.
根据权利要求1所述的方法，其特征在于，所述在确定出支持目标切片的第一小区或第一频点之后，执行针对所述第一小区或对应所述第一频点的小区的连接过程，包括：The method according to claim 1, wherein after the first cell or the first frequency point supporting the target slice is determined, performing the first cell or the cell corresponding to the first frequency point The connection process, including:

启动第一定时器和第二定时器，所述第一定时器用于所述终端设备执行小区选择过程，所述第二定时器用于所述终端设备搜索支持所述目标切片的第一小区或第一频点；Start a first timer and a second timer, where the first timer is used by the terminal device to perform a cell selection process, and the second timer is used by the terminal device to search for a first cell or a first cell that supports the target slice. a frequency

搜索支持所述目标切片的第一小区或第一频点；searching for a first cell or a first frequency point that supports the target slice;

若搜索到所述第一小区或第一频点，则执行针对所述第一小区或对应所述第一频点的小区的连接过程。If the first cell or the first frequency point is searched, a connection process for the first cell or the cell corresponding to the first frequency point is performed.
根据权利要求8所述的方法，其特征在于，所述第二定时器的时长小于所述第一定时器的时长。The method according to claim 8, wherein the duration of the second timer is shorter than the duration of the first timer.
根据权利要求8或9所述的方法，其特征在于，所述方法还包括：The method according to claim 8 or 9, wherein the method further comprises:

若搜索到所述第一小区或第一频点，则停止所述第二定时器，和/或，停止所述第一定时器。If the first cell or the first frequency point is found, the second timer is stopped, and/or the first timer is stopped.
根据权利要求8至10任一项所述的方法，其特征在于，所述启动第一定时器和第二定时器之后，还包括：The method according to any one of claims 8 to 10, wherein after starting the first timer and the second timer, the method further comprises:

若所述第二定时器超时，则搜索第二小区或第二频点；If the second timer times out, searching for a second cell or a second frequency point;

若搜索到所述第二小区或第二频点，则执行针对所述第二小区或对应所述第二频点的小区的连接过程。If the second cell or the second frequency point is searched, a connection process for the second cell or the cell corresponding to the second frequency point is performed.
根据权利要求11所述的方法，其特征在于，所述方法还包括：The method according to claim 11, wherein the method further comprises:

若搜索到所述第二小区或第二频点，则停止所述第一定时器。If the second cell or the second frequency point is searched, the first timer is stopped.
根据权利要求8至12任一项所述的方法，其特征在于，所述启动第一定时器和第二定时器之后，还包括：The method according to any one of claims 8 to 12, wherein after starting the first timer and the second timer, the method further comprises:

若所述第一定时器超时，则从无线连接的第一状态切换至第二状态。If the first timer times out, switching from the first state of the wireless connection to the second state.
根据权利要求1所述的方法，其特征在于，所述在确定出支持目标切片的第一小区或第一频点之后，执行针对所述第一小区或对应所述第一频点的小区的连接过程，包括：The method according to claim 1, wherein after the first cell or the first frequency point supporting the target slice is determined, performing the first cell or the cell corresponding to the first frequency point The connection process, including:

启动第二定时器，所述第二定时器用于所述终端设备搜索支持所述目标切片的第一小区或第一频点；starting a second timer, where the second timer is used by the terminal device to search for a first cell or a first frequency point that supports the target slice;

搜索支持所述目标切片的第一小区或第一频点；searching for a first cell or a first frequency point that supports the target slice;

若搜索到所述第一小区或第一频点，则执行针对所述第一小区或对应所述第一小区的频点的连接过程。If the first cell or the first frequency point is searched, a connection process for the first cell or the frequency point corresponding to the first cell is performed.
根据权利要求14所述的方法，其特征在于，所述方法还包括：The method of claim 14, wherein the method further comprises:

若搜索到所述第一小区或第一频点，则停止所述第二定时器。If the first cell or the first frequency point is searched, the second timer is stopped.
根据权利要求14或15所述的方法，其特征在于，所述启动第二定时器之后，还包括：The method according to claim 14 or 15, wherein after starting the second timer, the method further comprises:

若所述第二定时器超时，则启动第一定时器，所述第一定时器用于所述终端设备执行小区选择过程；If the second timer times out, start a first timer, where the first timer is used for the terminal device to perform a cell selection process;

搜索第二小区或第二频点；Search for the second cell or the second frequency;

若搜索到所述第二小区或第二频点，则执行针对所述第二小区或对应所述第二频点的小区的连接过程。If the second cell or the second frequency point is searched, a connection process for the second cell or the cell corresponding to the second frequency point is performed.
根据权利要求16所述的方法，其特征在于，所述方法还包括：The method of claim 16, wherein the method further comprises:

若搜索到所述第二小区或第二频点，则停止所述第一定时器。If the second cell or the second frequency point is searched, the first timer is stopped.
根据权利要求16或17所述的方法，其特征在于，所述启动第一定时器之后，还包括：The method according to claim 16 or 17, wherein after starting the first timer, the method further comprises:

若所述第一定时器超时，则从无线连接的第一状态切换至第二状态。If the first timer times out, switching from the first state of the wireless connection to the second state.
根据权利要求8至18任一项所述的方法，其特征在于，所述第二定时器的时长通过无线资源控制RRC专用信令或者***广播消息配置给所述终端设备。The method according to any one of claims 8 to 18, wherein the duration of the second timer is configured to the terminal device through a radio resource control RRC dedicated signaling or a system broadcast message.
根据权利要求4、7、13或18所述的方法，其特征在于，所述第一状态为连接态，所述第二状态为空闲态。The method according to claim 4, 7, 13 or 18, wherein the first state is a connected state, and the second state is an idle state.
根据权利要求4至6、11至12、16至17任一项所述的方法，其特征在于，所述第二小区或对应所述第二频点的小区是不支持所述目标切片的小区，和/或，合适的或可接受的小区。The method according to any one of claims 4 to 6, 11 to 12, and 16 to 17, wherein the second cell or a cell corresponding to the second frequency point is a cell that does not support the target slice , and/or, suitable or acceptable cells.
根据权利要求1至21任一项所述的方法，其特征在于，所述第一小区或对应所述第一频点的小区是合适的或可接受的小区。The method according to any one of claims 1 to 21, wherein the first cell or a cell corresponding to the first frequency point is a suitable or acceptable cell.
根据权利要求1至22任一项所述的方法，其特征在于，在小区选择过程中，所述终端设备在确定出满足以下条件中的至少一项的情况下，优先选择支持所述目标切片的第一小区或第一频点进行接入，或者，在确定出支持所述目标切片的第一小区或第一频点之后执行针对所述第一小区或对应所述第一频点的小区的连接过程：所述终端设备是支持切片的设备、所述终端设备是特定版本的设备、所述终端设备是支持特定切片的设备、正在有切片业务或特定切片业务服务、建立了切片对应的会话或特定切片对应的会话、接收过第一指示信息；其中，所述第一指示信息用于指示所述终端设备优先选择支持所述目标切片的第一小区或第一频点进行接入，或者用于指示所述终端设备在确定出支持所述目标切片的第一小区或第一频点之后执行针对所述第一小区或对应所述第一频点的小区的连接过程。The method according to any one of claims 1 to 22, characterized in that, in the cell selection process, the terminal device preferentially selects to support the target slice when it is determined that at least one of the following conditions is satisfied access to the first cell or the first frequency point, or, after determining the first cell or the first frequency point that supports the target slice connection process: the terminal device is a device that supports slicing, the terminal device is a device of a specific version, the terminal device is a device that supports a specific slicing, is having a slicing service or a specific slicing service service, and has established a slice corresponding to A session or a session corresponding to a specific slice, and the first indication information has been received; wherein, the first indication information is used to instruct the terminal device to preferentially select a first cell or a first frequency point that supports the target slice for access, Or it is used to instruct the terminal device to perform a connection process for the first cell or a cell corresponding to the first frequency after determining the first cell or the first frequency that supports the target slice.
根据权利要求1至23任一项所述的方法，其特征在于，所述目标切片为以下任意一种切片：当前激活的会话对应的切片、当前激活的切片、当前激活的优先级最高的会话对应的切片、当前激活的优先级最高的切片、需求的切片、需要建立的会话对应的切片、需要建立的切片、特定标识的切片、激活的会话中的至少之一对应的特定切片、需要建立的会话中的至少之一对应的特定切片。The method according to any one of claims 1 to 23, wherein the target slice is any one of the following slices: a slice corresponding to a currently activated session, a currently activated slice, and a currently activated session with the highest priority The corresponding slice, the currently activated slice with the highest priority, the required slice, the slice corresponding to the session to be established, the slice to be established, the slice with a specific identifier, the specific slice corresponding to at least one of the activated sessions, and the specific slice corresponding to at least one of the active sessions. At least one of the sessions corresponds to a particular slice.
根据权利要求1至24任一项所述的方法，其特征在于，所述目标切片是非接入层NAS指示给接入层AS的，或者，所述目标切片是AS选择的。The method according to any one of claims 1 to 24, wherein the target slice is indicated by the non-access stratum NAS to the access stratum AS, or the target slice is selected by the AS.
根据权利要求1至25任一项所述的方法，其特征在于，所述第一小区或所述第一频点的信息是所述终端设备保存且有效的。The method according to any one of claims 1 to 25, wherein the information of the first cell or the first frequency point is saved and valid by the terminal device.
根据权利要求1至26任一项所述的方法，其特征在于，所述连接过程为连接重建过程。The method according to any one of claims 1 to 26, wherein the connection process is a connection re-establishment process.
根据权利要求1至27任一项所述的方法，其特征在于，所述方法还包括：The method according to any one of claims 1 to 27, wherein the method further comprises:

在所述终端设备从第一通信***的小区切换到第二通信***的小区的情况下，接收来自网络设备的切换命令；receiving a handover command from a network device when the terminal device is handed over from a cell of the first communication system to a cell of the second communication system;

在小区切换失败的情况下，尝试在所述目标切片对应的频率上进行小区选择，或者搜索支持所述目标切片的合适小区驻留，或者在所述目标切片对应的频率所对应的小区上执行连接建立过程，或者在所述目标切片对应的小区上执行连接建立过程。In the case of cell handover failure, try to perform cell selection on the frequency corresponding to the target slice, or search for a suitable cell that supports the target slice to camp on, or perform cell selection on the cell corresponding to the frequency corresponding to the target slice The connection establishment process is performed, or the connection establishment process is performed on the cell corresponding to the target slice.
根据权利要求28所述的方法，其特征在于，所述尝试在所述目标切片对应的频率上进行小区选择，或者搜索支持所述目标切片的合适小区驻留之后，还包括：The method according to claim 28, wherein after the attempting to perform cell selection on a frequency corresponding to the target slice, or searching for a suitable cell supporting the target slice to camp on, the method further comprises:

若未选择或搜索到相应小区，则执行小区选择过程，搜索到合适的或可接受的小区驻留。If no corresponding cell is selected or searched, a cell selection process is performed to search for a suitable or acceptable cell to camp on.
根据权利要求28或29所述的方法，其特征在于，所述切换命令中包括所述目标切片的标识信息和/或所述目标切片对应的频率信息。The method according to claim 28 or 29, wherein the handover command includes identification information of the target slice and/or frequency information corresponding to the target slice.
根据权利要求28至30任一项所述的方法，其特征在于，从所述第一通信***的小区切换到所述第二通信***的小区，是因所述目标切片的业务需求引起的。The method according to any one of claims 28 to 30, wherein the handover from the cell of the first communication system to the cell of the second communication system is caused by the service requirements of the target slice.
一种小区选择装置，其特征在于，所述装置包括：A cell selection device, characterized in that the device comprises:

小区连接模块，用于在确定出支持目标切片的第一小区或第一频点之后，执行针对所述第一小区或对应所述第一频点的小区的连接过程。A cell connection module, configured to perform a connection process for the first cell or a cell corresponding to the first frequency after determining the first cell or the first frequency that supports the target slice.
一种终端设备，其特征在于，所述终端设备包括处理器，其中：A terminal device, characterized in that the terminal device includes a processor, wherein:

所述处理器，用于在确定出支持目标切片的第一小区或第一频点之后，执行针对所述第一小区或对应所述第一频点的小区的连接过程。The processor is configured to perform a connection process for the first cell or a cell corresponding to the first frequency after determining the first cell or the first frequency that supports the target slice.
一种计算机可读存储介质，其特征在于，所述存储介质中存储有计算机程序，所述计算机程序用于被终端设备的处理器执行，以实现如权利要求1至31任一项所述的小区选择方法。A computer-readable storage medium, characterized in that a computer program is stored in the storage medium, and the computer program is used to be executed by a processor of a terminal device, so as to implement the method according to any one of claims 1 to 31. Cell selection method.