WO2023133689A1

WO2023133689A1 - Network slice determination method and apparatus, and storage medium

Info

Publication number: WO2023133689A1
Application number: PCT/CN2022/071372
Authority: WO
Inventors: 卢飞
Original assignee: Oppo广东移动通信有限公司
Priority date: 2022-01-11
Filing date: 2022-01-11
Publication date: 2023-07-20
Also published as: CN118140542A

Abstract

Embodiments of the present application provide a network slice determination method and apparatus, and a storage medium. The network slice determination method comprises: a terminal device receiving a first message sent by a core network device via an access network device (S102), the first message comprising information of at least one first network slice and information of at least one stand-alone non-public network (SNPN), the at least one SNPN being a range in which the core network device allows the terminal device to use the information of the at least one first network slice to determine information of at least one second network slice when the terminal device is moved out of a registration region; when the terminal device moves out of the registration region and moves to a first SNPN, the terminal device determining the information of the at least one second network slice on the basis of the information of the at least one first network slice (S103), the at least one SNPN comprising the first SNPN. Using the present application, signaling may be saved, preventing excess transmission delay.

Description

Network slice determination method, device and storage medium

technical field

The present application relates to the field of communication technologies, and in particular to a method, device and storage medium for determining network slices.

Background technique

Ordinary end users will conduct data services through the Public Land Mobile Network (PLMN), and the network device in the PLMN will send the allowed network slice selection assistance information (Allowed Network Slice Selection Assistance Information, Allowed NSSAI) to the terminal device , when the terminal device moves out of the registration area, as long as the PLMN ID of the moved network belongs to the PLMN ID in the tracking area identity (tracking area identity, TAI) list, the terminal device can determine the requested network slice selection auxiliary information (requested network) according to the allowed NSSAI slice selection assistance information, Requested NSSAI).

However, in the stand-alone non-public network (SNPN), the SNPN can be identified by a combination of PLMN ID and network identifier (network identifier-NID). Different SNPNs can have the same PLMN ID. Different NIDs. If the method of generating Requested NSSAI in the PLMN network is used, when the UE moves from the first SNPN network to the second SNPN network, and the two SNPN networks have the same PLMN ID, the terminal device will generate the Requested NSSAI according to the Allowed NSSAI of the first SNPN network , if the second SNPN network may not fully support part of the S-NSSAI in the allowed NSSAI of the first SNPN network, it may cause the request to be rejected, and the UE will re-initiate the registration process to obtain the allowed NSSAI of the second SNPN network. This causes unnecessary waste of signaling and brings additional delay.

Contents of the invention

Embodiments of the present application provide a network slice determination method, device, and storage medium, which can save signaling and avoid additional transmission delays. Described technical scheme is as follows:

In a first aspect, the present application provides a method for determining a network slice, the method comprising:

The terminal device receives the first message sent by the core network device via the access network device, where the first message includes information about at least one first network slice and information about at least one independent networking non-public network SNPN, where the at least one SNPN is The core network device allows the terminal device to use the information of the at least one first network slice to determine the range of the information of the at least one second network slice when the terminal device moves out of the registration area;

When the terminal device moves out of the registration area and moves into the first SNPN, the terminal device determines the information of the at least one second network slice based on the information of the at least one first network slice, and the at least one SNPN including the first SNPN.

In a second aspect, the present application provides a method for determining network slices, the method comprising:

The core network device sends a first message to the terminal device via the access network device, where the first message includes information about at least one first network slice and information about at least one independent networking non-public network (SNPN), where the at least one SNPN is the The core network device allows the terminal device to use the information of the at least one first network slice to determine the range of the information of the at least one second network slice when the terminal device moves out of the registration area.

In a third aspect, the present application provides a communication device. The communication device may be a terminal device, or a device in the terminal device, such as a chip in the terminal device, or a device that can be matched with the terminal device. This function can be implemented by hardware, and can also be implemented by executing corresponding software through hardware. The communication device includes:

A transceiver unit, configured to receive a first message sent by a core network device via an access network device, where the first message includes information about at least one first network slice and information about at least one independent networking non-public network SNPN, and the at least A SNPN is a range in which the core network device allows the terminal device to use the information of the at least one first network slice to determine the information of at least one second network slice when it moves out of the registration area;

a processing unit, configured to determine information of the at least one second network slice based on information of the at least one first network slice when the terminal device moves out of the registration area and moves into the first SNPN, the at least one The SNPN includes the first SNPN.

In a fourth aspect, the present application provides a communication device. The communication device may be a core network device, or a device in the core network device, such as a chip in the core network device, or a device that can be matched with the core network device. device. This function can be implemented by hardware, and can also be implemented by executing corresponding software through hardware. The communication device includes:

A transceiver unit, configured to send a first message to a terminal device via an access network device, where the first message includes information about at least one first network slice and information about at least one independent networking non-public network SNPN, and the at least one SNPN It is the core network device that allows the terminal device to use the information of the at least one first network slice to determine the range of the information of the at least one second network slice when the terminal device moves out of the registration area.

In a fifth aspect, the present application provides a communication device, including a processor and a memory; the memory stores at least one instruction, and the at least one instruction is used to be executed by the processor to implement the first aspect or the second The network slice determination method described in the aspect.

In a sixth aspect, the present application provides a processor, including: an input circuit, an output circuit, and a processing circuit. The processing circuit is configured to receive a signal through the input circuit and transmit a signal through the output circuit, so that the processor executes the network slice determination method described in the first aspect or the second aspect.

In the specific implementation process, the above-mentioned processor can be one or more chips, the input circuit can be an input pin, the output circuit can be an output pin, and the processing circuit can be a transistor, a gate circuit, a flip-flop and various logic circuits, etc. . The input signal received by the input circuit may be received and input by, for example but not limited to, the receiver, the output signal of the output circuit may be, for example but not limited to, output to the transmitter and transmitted by the transmitter, and the input circuit and the output The circuit may be the same circuit, which is used as an input circuit and an output circuit respectively at different times. The embodiment of the present application does not limit the specific implementation manners of the processor and various circuits.

In the seventh aspect, the embodiment of the present application provides a computer program product, the computer program product includes: a computer program (also called code, or instruction), when the computer program is executed, the computer executes the above-mentioned first The network slice determination method described in the first aspect or the second aspect.

In an eighth aspect, a computer-readable storage medium is provided, the storage medium stores at least one instruction, and the at least one instruction is used to be executed by a processor to implement network slicing as described in the first aspect or the second aspect Determine the method.

In this embodiment of the present application, the terminal device receives at least one first network slice information and at least one SNPN information sent by the core network device via the access network device, and the at least one SNPN is when the core network device allows the terminal device to move out of the registration area. The information range of the at least one second network slice may be determined by using the information of the at least one first network slice, and when the terminal device moves out of the registration area and moves into the first SNPN belonging to the at least one SNPN, the terminal device may be based on the at least one The information of a first network slice determines the information of at least one second network slice. The core network device of this application sends the SNPN range that can use the at least one first network slice to the terminal device, so that when the terminal device moves out of the registration area, it can clearly determine whether it is necessary to re-acquire the network slice information of the SNPN network to avoid Signaling waste and additional transmission delay caused by rejection.

Description of drawings

FIG. 1 is a schematic diagram of a network architecture provided by the present application;

FIG. 2 is a schematic flowchart of a method for determining a network slice provided by the present application;

Fig. 3 is a schematic structural diagram of an Allowed NSSAI provided by the present application;

Figure 4a is a schematic diagram of a registration process provided by this application;

FIG. 4b is a schematic diagram of a configuration update process provided by the present application;

FIG. 5 is a schematic structural diagram of a communication device provided by the present application;

FIG. 6 is a schematic structural diagram of another communication device provided by the present application;

FIG. 7 is a schematic structural diagram of another communication device provided by the present application;

FIG. 8 is a schematic structural diagram of a chip provided by the present application.

Detailed ways

In order to make the purpose, technical solution and advantages of the present application clearer, the implementation manners of the present application will be further described in detail below in conjunction with the accompanying drawings.

The "plurality" mentioned herein means two or more. "And/or" describes the association relationship of associated objects, indicating that there may be three types of relationships, for example, A and/or B may indicate: A exists alone, A and B exist simultaneously, and B exists independently. The character "/" generally indicates that the contextual objects are an "or" relationship.

The technical solutions of the embodiments of this application can be applied to SNPN. SNPN is used in office scenarios, home scenarios, factories and other scenarios. In order to manage more effectively and safely, local users or managers will deploy local networks or private networks. .

The network elements in SNPN can exist independently of PLMN, that is, they have policy control function (Policy Control Function, PCF), session management function (Session Management Function, SMF), access and mobility management function (Access and Mobility Management Function) , AMF), receive unified data management (Unified Data Management, UDM) and other network elements, and have their own root secret key, security algorithm, contract information, policy information, etc. to achieve isolation from the PLMN.

FIG. 1 shows a schematic diagram of an SPNN network system that can be applied to this application. As shown in Figure 1, the system can be divided into two parts: an access network and a core network. The access network is used to implement functions related to wireless access, and mainly includes access network (access network, AN) equipment 102, and the access network equipment includes wireless access network (radio access network, RAN) equipment and other devices connected through the air interface. connected devices (such as WiFi). The core network mainly includes the following key logical network elements: user plane function (user plane function) 103, access and mobility management function (access and mobility management function, AMF) 105, session management function (session management function) 106, policy Control function (policy control function, PCF) 107, unified data management function (unified data management) 109. The system 100 may also include a user equipment (user equipment, UE) 101, a data network (data network, DN) 104, and an application function (application function, AF) 108. Interfaces between network elements are shown in FIG. 1 . It should be understood that service interfaces may also be used for communication between network elements.

UE may also be called terminal equipment. The terminal device can communicate with one or more core networks (core network, CN) via the AN device. A terminal device can be called an access terminal, terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, wireless network equipment, user agent, or user device. The terminal can be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a handheld device with wireless communication capabilities. Devices, computing devices or other devices connected to wireless modems, in-vehicle devices, wearable devices or IoT, terminal devices in vehicular networks, and any form of terminal devices in future networks.

The AN device is a device for connecting a terminal device to a wireless network, and may specifically be a base station. The base station may include various forms of base stations, for example: macro base stations, micro base stations (also called small stations), relay stations, access points, and the like. Specifically, it can be: access point (access point, AP) in wireless local area network (wireless local area network, WLAN), global system for mobile communications (global system for mobile communications, GSM) or code division multiple access (code division multiple access) access, CDMA) in the base station (base transceiver station, BTS), can also be wideband code division multiple access (wideband code division multiple access, WCDMA) in the base station (NodeB, NB), can also be the evolved base station in LTE (Evolved Node B, eNB or eNodeB), or relay stations or access points, or vehicle-mounted devices, wearable devices, and the next generation Node B (the next generation Node B, gNB) in 5G systems, etc.

UDM has the functions of managing user's subscription data and generating user's authentication information.

AMF is mainly responsible for UE registration management, UE connection management, UE reachability management, UE access authorization and access authentication, UE security functions, UE mobility management, network slice selection , SMF selection and other functions. The AMF serves as the anchor point of the N1/N2 interface signaling connection and provides the SMF with the routing of the N1/N2 interface session management (session management, SM) message, and maintains and manages the state information of the UE. AMF is a mobile management network element in the 5G system.

SMF is mainly responsible for all control plane functions of UE session management, including UPF selection and control, network interconnection protocol (internet protocol, IP) address allocation and management, session quality of service (quality of service, QoS) management, from PCF Obtain policy and charging control (policy and charging control, PCC) policies, etc. The SMF also serves as the termination point for the SM portion of non-access stratum (NAS) messages.

PCF has functions such as providing policy rules to control plane functional entities.

AF may be an application server, which may belong to an operator or a third party.

UPF is mainly responsible for processing user messages, such as forwarding and billing, and can be used as the anchor point of protocol data unit (protocol data unit, PDU) session (session) connection, that is, PDU session anchor (PDU session anchor, PSA ), responsible for data packet filtering, data transmission/forwarding, rate control, generation of billing information, user plane QoS processing, uplink transmission authentication, transmission level verification, downlink data packet buffering and downlink data notification triggering for UE. UPF can also serve as a branch point for multi-homed (multi-homed) PDU sessions.

DN, a network that provides data transmission services for users, for example, IP Multi-media service (IP Multi-media service, IMS), Internet, etc. DN can include application server (application server, AS). AS is a software framework that provides an application running environment for providing applications with services such as security, data, transaction support, and load balancing large-scale distributed system management. . The UE obtains the application message by communicating with the AS. It should be noted that the above-mentioned AF is the control plane of the AS.

It should be understood that the embodiment of the present application is not limited to be only applied to the system architecture shown in FIG. 1 . For example, the communication system to which the method for determining a network slice according to the embodiment of the present application can be applied may include more or fewer network elements or devices. The devices or network elements in Figure 1 can be hardware, or functionally divided software, or a combination of the above two. The devices or network elements in FIG. 1 may communicate through other devices or network elements.

Based on the network architecture shown above, the method for determining network slices provided by the embodiment of the present application will be described in detail below. During the introduction, the names of the information exchanged between the core network device and the terminal device via the access network device are used as examples, and do not constitute a limitation to the embodiment of the present application.

Please refer to FIG. 2 , which is a schematic flowchart of a method for determining a network slice provided in an embodiment of the present application. FIG. 1 may be an example of a network architecture applied to the method for determining a network slice. As shown in FIG. 2 , the method may include: S101-S103. Optionally, the method may further include step S104, wherein the execution sequence of each step is not limited. As shown in the figure, the method for determining network slices in this embodiment of the present application includes but is not limited to the following steps:

S101. The core network device sends a first message to the terminal device via the access network device, where the first message includes information about at least one first network slice and information about at least one independent networking non-public network SNPN, and the at least one SNPN It is the core network device that allows the terminal device to use the information of the at least one first network slice to determine the range of the information of the at least one second network slice when the terminal device moves out of the registration area.

S102 The terminal device receives the first message sent by the core network device via the access network device.

Among them, the network slice (network slice) involved in this application is a logical network (a logic network that provides specific network capabilities and network characteristics) that provides specific network capabilities and network characteristics. It refers to a logical network with different network capabilities and network characteristics customized according to different service requirements or tenants on the physical or virtual network infrastructure. A network slice consists of a set of network functions and their required resources (eg, computing resources, storage resources, network resources). A network slice can be identified by a single network slice selection assistance information (single network slice selection assistance information, S-NSSAI).

In this embodiment of the present application, the information of at least one first network slice included in the first message may refer to the allowed network slice selection assistance information (allowed network slice selection assistance) sent by the core network device to the terminal device via the access network device. information, information of at least one network slice in Allowed NSSAI), where the Allowed NSSAI is used to indicate the S-NSSAI that the terminal device can use in all tracking areas in the current registration area.

Wherein, a registered area (RA) is composed of one or more tracking areas (TA), and the TA can be identified by a tracking area identity (TAI), and the TAI can be the tracking area corresponding to the PLMN ID. Area code (tracking area code, TAC). One or more TAs included in the registration area may be determined by one or more TAIs in the TAI list sent by the core network device to the terminal device via the access network device. The TAI list may be determined by the core network device via the access network device. Carried in the first message sent by the device to the terminal device. When a terminal device moves between different TAs in the same registration area, it does not need to perform mobility registration update. A mobility registration update needs to be performed only when the terminal device moves out of the registration area.

When the terminal device performs a mobility registration update, the terminal device needs to send requested network slice selection assistance information (requested network slice selection assistance information, Requested NSSAI) to the core network device via the access network device. The Requested NSSAI is used to indicate the NSSAI provided by the terminal device 101 to the network during the registration process. The Requested NSSAI is a subset of the Allowed NSSAI corresponding to the current SNPN network and the configured NSSAI applicable to the current SNPN network. The configured NSSAI is determined when the terminal device signs up The NSSAI supported by the terminal device.

The information of at least one second network slice in this application may refer to the information of one or more network slices identified by one or more S-NSSAI included in the Requested NSSAI.

In this embodiment of the present application, the core network device sends the information of at least one first network slice to the terminal device via the access network device, and also sends the applicable scope of the information of the at least one first network slice to the terminal device, and the applicable scope may be It is at least one SNPN, and the at least one SNPN is the range where the core network device allows the terminal device to use the information of the at least one first network slice to determine the information of at least one second network slice when the terminal device moves out of the registration area, that is, the terminal device moves out of the registration area , and move into any one of the at least one SPNN, the information of the at least one first network slice can be used as the Allowed NSSAI corresponding to the currently moved-in SPNN network, and the mobile is generated according to the Allowed NSSAI and the configured NSSAI applicable to the current SPNN network Information about at least one second network slice of the Requested NSSAI during the permanent registration update process. Optionally, the at least one SNPN may be an equivalent SNPN.

Wherein, the information of the at least one SNPN (such as the identifier of the at least one SNPN) can be carried by a target information element (Information Element, IE), optionally, it can be represented by a separate IE in the first message; optionally, The target IE can be added to the Allowed NSSAI to carry the information of the at least one SPNN, that is, the target IE and the information of at least one first network slice are encapsulated together in the Allowed NSSAI, as shown in Figure 3, that is, a new one is added to the Allowed NSSAI. The target IE is used to bear the identity of the at least one SNPN; optionally, the information of the at least one SNPN can be carried by adding a separate target IE in the TAI list, that is, the target IE and the at least one tracking area included in the registration area The identifiers are jointly encapsulated in the TAI list, and this application does not limit the encapsulation method of the at least one SNPN information.

In a first optional implementation manner, during the registration process, the core network device sends the information of the at least one first network slice and the information of the at least one SNPN to the terminal device via the access network device. In this implementation manner , the first message may be a registration acceptance message. Before the terminal device receives the first message sent by the core network device via the access network device, the terminal device sends a registration request message to the core network device via the access network device, where the registration request message includes information about at least one third network slice The at least one third network slice information may include slice information included in the Requested NSSAI sent by the terminal device, and the at least one third network slice includes at least one first network slice sent by the core network device to the terminal device via the access network device.

As shown in Figure 4a, the information transmission process of at least one SNPN is illustrated by taking the terminal device as UE, the access network device as NG-RAN, and the core network device as AMF, as shown in the figure, including the following steps:

Step 1. The UE sends a registration request message to the AMF via NG-RAN. The registration request message carries parameters such as 5G-GUTI, UE security capability, and Requested NSSAI.

Step 2, AMF returns a registration acceptance message to UE via NG-RAN, the registration acceptance message carries the new 5G-GUTI, Allowed NSSAI, the scope of application of the Allowed NSSAI, TAI list (set of multiple TAIs), equivalent SNPN ID list and other parameters.

Among them, the Allowed NSSAI includes multiple available S-NSSAIs. The scope of application of the Allowed NSSAI means that when the UE moves out of the registration area composed of the tracking areas corresponding to each TAI in the TAI list, the Allowed NSSAI can be used to generate the SNPN range of the Requested NSSAI. The range may include a range of at least one SNPN. The scope of application of the Allowed NSSAI can be represented by a separate IE, or by adding an IE to the Allowed NSSAI, or by adding a separate IE to the TAI list.

Step 3: UE returns a registration complete message to AMF via NG-RAN to confirm that 5G-GUTI takes effect.

In a second optional implementation manner, during the configuration update process, the core network device sends the information of the at least one first network slice and the information of the at least one SNPN to the terminal device via the access network device. In, the first message may be a configuration update request message, the information of the at least one first network slice may be information of an updated network slice, the at least one SPNN may be the scope of application of the at least one first network slice, the The scope of application refers to the scope of determining the information of the at least one second network slice using the information of the at least one first network slice when the terminal device moves out of the registration area.

Exemplarily, when the configuration of the network slice changes or the subscription information related to the slice of the terminal device changes, the core network device will send a configuration update request message to the terminal device via the access network device, and the configuration update request message includes the updated The information of the at least one first network slice and the scope of application of the information of the at least one first network slice, that is, the information of at least one SNPN.

As shown in Figure 4b, the information transmission process of at least one SNPN is illustrated by taking the terminal device as UE, the access network device as NG-RAN, and the core network device as AMF, as shown in the figure, including the following steps:

Step 1. When the configuration of the network slice changes, or the subscription information related to the UE slice changes, the AMF sends a UE configuration update request (ie, UE Configuration Update Command) to the UE via NG-RAN. The UE configuration update request includes the updated Allowed NSSAI, rejected NSSAI, TAI list (optional), and parameters such as the scope of application of Allowed NSSAI can also be carried.

Among them, the Allowed NSSAI includes multiple available S-NSSAIs. The scope of application of the Allowed NSSAI means that when the UE moves out of the registration area composed of the tracking areas corresponding to each TAI in the TAI list, the Allowed NSSAI can be used to generate the SNPN range of the Requested NSSAI. A range may include a range of at least one SNPN. The scope of application of the Allowed NSSAI can be represented by a separate IE, or by adding an IE to the Allowed NSSAI, or by adding a separate IE to the TAI list.

Step 2, UE returns UE Configuration Update Response (ie UE Configuration Update ACK) message to AMF via NG-RAN.

S103. When the terminal device moves out of the registration area and moves into the first SNPN, the terminal device determines the information of the at least one second network slice based on the information of the at least one first network slice, and the at least A SNPN includes the first SNPN.

In one embodiment, when the terminal device moves out of the registration area and moves into the first SNPN, the terminal device initiates a mobility registration update process, and the terminal device determines whether the first SNPN belongs to one of the above at least one SNPN, if The first SNPN is an SNPN in the at least one SPNN, and the terminal device determines the information of at least one second network slice according to the information of the at least one first network slice. Exemplarily, the at least one second network slice is generated according to at least one S-NSSAI in the Allowed NSSAI and the configured NSSAI applicable to the current first SNPN network, and the at least one second network slice may be the current first SNPN network The corresponding Allowed NSSAI (according to the scope of application, the Allowed NSSAI corresponding to the first SNPN network is determined to be the information of at least one first network slice above) and a subset of the configured NSSAI applicable to the current first SNPN network. The configured NSSAI is the terminal device The NSSAI supported by the terminal equipment determined at the time of signing the contract.

Wherein, the at least one first network slice is at least one network slice identified by at least one S-NSSAI in the Allowed NSSAI received by the terminal device in step S102, and the information of the at least one second network slice is that the terminal device is moving The network slicing information sent to the core network device in the permanent registration update process is at least one S-NSSAI contained in the Requested NSSAI in the registration update request message. Therefore, the terminal device determines the Requested NSSAI according to the Allowed NSSAI.

S104. The terminal device sends a registration update request message to the core network device via the access network device, where the registration update request message includes information about the at least one second network slice.

In an embodiment, the terminal device sends a registration update request message to the core network device via the access network device, the registration update request message includes a Requested NSSAI, and the Requested NSSAI includes at least Information about a second network slice.

Corresponding to the method provided in the foregoing method embodiment, the embodiment of the present application further provides a corresponding communication device, where the communication device includes a corresponding module or unit for executing the foregoing embodiment. The modules may be software, or hardware, or a combination of software and hardware.

Please refer to FIG. 5 , which is a schematic structural diagram of a communication device provided by an embodiment of the present application. The communication device may be applied to a terminal device. Optionally, the communication device may be a terminal device, a device in the terminal device, or a device that can be matched with the terminal device.

The communication device shown in FIG. 5 may include a transceiver unit 1001 and a processing unit 1002 . The transceiver unit 1001 can also be divided into a sending unit and a receiving unit. The sending unit is used to realize the sending function, and the receiving unit is used to realize the receiving function. The transceiver unit 1001 can realize the sending function and/or the receiving function. A transceiver unit may also be described as a communication unit.

Wherein, the transceiver unit 1001 is configured to receive the first message sent by the core network device via the access network device, the first message including information of at least one first network slice and information of at least one independent networking non-public network SNPN, The at least one SNPN is a range in which the core network device allows the terminal device to use the information of the at least one first network slice to determine the information of at least one second network slice when it moves out of the registration area;

A processing unit 1002, configured to determine information of the at least one second network slice based on information of the at least one first network slice when the terminal device moves out of the registration area and moves into the first SNPN, the at least A SNPN includes the first SNPN.

Optionally, the transceiving unit 1001 is further configured to send a registration update request message to the core network device via the access network device, where the registration update request message includes information of the at least one second network slice.

Optionally, the first message further includes an identifier of at least one tracking area included in the registration area.

Optionally, the information of the at least one SNPN is carried by a target information element IE;

The target IE and the identifier of at least one tracking area included in the registration area are jointly encapsulated in a tracking area list; or,

The target IE and the information of the at least one first network slice are jointly encapsulated in allowed network slice selection auxiliary information.

Optionally, the first message is a registration acceptance message;

The transceiving unit 1001 is further configured to send a registration request message to the core network device via the access network device, where the registration request message includes information of at least one third network slice;

Wherein, the at least one third network slice includes the at least one first network slice.

Optionally, the first message is a configuration update request message, and the information of the at least one first network slice is information of an updated network slice.

Optionally, the at least one SNPN is an equivalent SNPN.

For the relevant content of this implementation manner, refer to the relevant content of the method embodiment in FIG. 2 above. No more details here.

Please refer to FIG. 6 , which is a schematic structural diagram of another communication device provided by an embodiment of the present application. The communication device can be applied to core network equipment. Optionally, the communication device can be a core network device, a device in the core network device, or a device that can be used in conjunction with the core network device.

The communication device shown in FIG. 6 may include a transceiver unit 2001 . The transceiver unit 2001 can also be divided into a sending unit and a receiving unit, the sending unit is used to realize the sending function, the receiving unit is used to realize the receiving function, and the sending and receiving unit 2001 can realize the sending function and/or the receiving function. A transceiver unit may also be described as a communication unit.

Wherein, the transceiver unit 2001 is configured to send a first message to the terminal device via the access network device, the first message includes at least one first network slice information and at least one independent networking non-public network SNPN information, the At least one SNPN is a range in which the core network device allows the terminal device to use the information of the at least one first network slice to determine the information of the at least one second network slice when it moves out of the registration area.

Optionally, the transceiving unit 2001 is further configured to receive, via the access network device, a registration update request message sent by the terminal device, where the registration update request message includes information about the at least one second network slice;

The transceiving unit 2001 is further configured to send a registration update acceptance message to the terminal device via the access network device.

Optionally, the first message is a registration acceptance message, characterized in that,

The transceiving unit 2001 is further configured to receive, via the access network device, a registration request message sent by the terminal device, where the registration request message includes information about at least one third network slice, and the at least one third network slice includes The at least one first network slice.

FIG. 7 shows a schematic structural diagram of a communication device. The communication device may be a core network device, or a terminal device, or a chip, a chip system, or a processor that supports the core network device to implement the above method, or a chip or a chip that supports the terminal device to implement the above method. system, or processor, etc. The device can be used to implement the methods described in the above method embodiments, and for details, refer to the descriptions in the above method embodiments.

The communication device may include one or more processors 3001 . The processor 3001 may be a general-purpose processor or a special-purpose processor. For example, it can be a baseband processor or a central processing unit. The baseband processor can be used to process communication protocols and communication data, and the central processing unit can be used to control communication devices (such as base stations, baseband chips, terminals, terminal chips, DU or CU, etc.), execute software programs, and process Data for Software Programs.

Optionally, the communication device may include one or more memories 3002, on which computer programs or instructions 3004 may be stored, and the instructions may be executed on the processor 3001, so that the device executes the above method Methods described in the Examples. Optionally, data may also be stored in the memory 3002 . The processor 3001 and the memory 3002 can be set separately or integrated together.

Optionally, the communication device may further include a transceiver 3005 and an antenna 3006 . The transceiver 3005 may be called a transceiver unit, a transceiver, or a transceiver circuit, etc., and is used to realize a transceiver function. The transceiver 3005 may include a receiver and a transmitter, and the receiver may be called a receiver or a receiving circuit for realizing a receiving function; the transmitter may be called a transmitter or a sending circuit for realizing a sending function.

The communication apparatus may be a terminal device: the processor 3001 is configured to execute the steps internally processed by the terminal device in the foregoing method embodiments. The transceiver 3005 is configured to perform the steps of transmitting and receiving signals performed by the terminal device in the foregoing method embodiments.

The communication device may be a core network device: the processor 3001 is configured to execute the internal processing steps performed by the core network device in the above method embodiments. The transceiver 3005 is configured to perform the steps of transmitting and receiving signals performed by the core network device in the foregoing method embodiments.

In another optional design, the processor 3001 may include or be connected to a transceiver for implementing receiving and sending functions.

In yet another possible design, optionally, the processor 3001 may store a computer program or instruction 3003, and the computer program or instruction 3003 runs on the processor 3001, which may cause the device to execute the method described in the above method embodiment. method. The computer program or instruction 3003 may be solidified in the processor 3001, and in this case, the processor 3001 may be implemented by hardware.

In yet another possible design, optionally, the memory 3002 may store computer programs or instructions 3004, and the processor 3001 may call and run the computer programs or instructions 3004 stored in the memory 3002, which may cause the device to execute the above method. method described in the example.

In yet another possible design, the communication device may include a circuit, and the circuit may implement the function of sending or receiving or communicating in the foregoing method embodiments. The processors and transceivers described in this application can be implemented on integrated circuits (integrated circuits, ICs), analog ICs, radio frequency integrated circuits (RFICs), mixed-signal ICs, application specific integrated circuits (ASICs), printed circuit boards ( printed circuit board, PCB), electronic equipment, etc. The processor and transceiver can also be fabricated using various IC process technologies, such as complementary metal oxide semiconductor (CMOS), nMetal-oxide-semiconductor (NMOS), P-type Metal oxide semiconductor (positive channel metal oxide semiconductor, PMOS), bipolar junction transistor (Bipolar Junction Transistor, BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.

The communication device described in the above embodiments may be a core network device or a terminal device, but the scope of the communication device described in this application is not limited thereto, and the structure of the communication device may not be limited by FIG. 7 . A communication device may be a stand-alone device or may be part of a larger device. For example the communication device may be:

(1) Stand-alone integrated circuits ICs, or chips, or chip systems or subsystems;

(2) A set of one or more ICs, optionally, the set of ICs may also include storage components for storing data and instructions;

(3) ASIC, such as modem (MSM);

(4) Modules that can be embedded in other devices;

(5) Receivers, terminals, smart terminals, cellular phones, wireless devices, handsets, mobile units, vehicle-mounted devices, network devices, cloud devices, artificial intelligence devices, etc.;

(6) Others and so on.

For the case where the communication device may be a chip or a chip system, refer to the schematic structural diagram of the chip shown in FIG. 8 . The chip 4000 shown in FIG. 8 includes a processor 4001 and an interface 4002 . Wherein, the number of processors 4001 may be one or more, and the number of interfaces 4002 may be more than one.

For the case where the chip is used to realize the functions of the terminal device in the embodiment of the present application: the interface 4002 is used to receive the first message sent by the core network device via the access network device, and the first message includes information of at least one first network slice and at least one independent network non-public network SPNN information, the at least one SNPN is the core network device allowing the terminal device to use the information of the at least one first network slice to determine at least one second network slice when the terminal device moves out of the registration area The scope of network slicing information;

The processor 4001 is configured to determine the information of the at least one second network slice based on the information of the at least one first network slice when the terminal device moves out of the registration area and moves into the first SNPN, and the at least one The SNPN includes the first SNPN.

Optionally, the chip further includes a memory 4003, and the memory 4003 is used to store necessary program instructions and data of the terminal device.

For the case where the chip is used to implement the functions of the core network device in the embodiment of the present application: the interface 4002 is used to send a first message to the terminal device via the access network device, and the first message includes information about at least one first network slice and Information about at least one independent networking non-public network SPNN, where the core network device allows the terminal device to use the information of the at least one first network slice to determine at least one second network when the terminal device moves out of the registration area The extent of the slice's information.

Optionally, the chip further includes a memory 4003, and the memory 4003 is used to store necessary program instructions and data of the network device.

Those skilled in the art can also understand that various illustrative logical blocks and steps listed in the embodiments of the present application can be implemented by electronic hardware, computer software, or a combination of both. Whether such functions are implemented by hardware or software depends on the specific application and overall system design requirements. Those skilled in the art may use various methods to implement the described functions for each specific application, but such implementation should not be understood as exceeding the protection scope of the embodiments of the present application.

The present application also provides a computer-readable storage medium on which a computer program is stored, and when the computer-readable storage medium is executed by a computer, the functions of any of the above method embodiments are realized.

The present application also provides a computer program product, which implements the functions of any one of the above method embodiments when executed by a computer.

In the above embodiments, all or part of them may be implemented by software, hardware, firmware or any combination thereof. When implemented using software, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on the computer, the processes or functions according to the embodiments of the present application will be generated in whole or in part. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable devices. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from a website, computer, server or data center Transmission to another website site, computer, server or data center by wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be accessed by a computer, or a data storage device such as a server or a data center integrated with one or more available media. The available medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a high-density digital video disc (digital video disc, DVD)), or a semiconductor medium (for example, a solid state disk (solid state disk, SSD)) etc.

Those of ordinary skill in the art can understand that: the first, second and other numbers involved in this application are only for convenience of description, and are not used to limit the scope of the embodiments of this application, and also indicate the sequence.

The corresponding relationships shown in the tables in this application can be configured or predefined. The values of the information in each table are just examples, and may be configured as other values, which are not limited in this application. When configuring the corresponding relationship between the information and each parameter, it is not necessarily required to configure all the corresponding relationships shown in the tables. For example, in the table in this application, the corresponding relationship shown in some rows may not be configured. For another example, appropriate deformation adjustments can be made based on the above table, for example, splitting, merging, and so on. The names of the parameters shown in the titles of the above tables may also use other names that the communication device can understand, and the values or representations of the parameters may also be other values or representations that the communication device can understand. When the above tables are implemented, other data structures can also be used, for example, arrays, queues, containers, stacks, linear tables, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables or hash tables can be used wait.

Predefined in this application can be understood as defining, predefining, storing, prestoring, prenegotiating, preconfiguring, curing, or prefiring.

Those skilled in the art can appreciate that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present application.

Those skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the above-described system, device and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

The above is only a specific implementation of the application, but the scope of protection of the application is not limited thereto. Anyone familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the application. Should be covered within the protection scope of this application. Therefore, the protection scope of the present application should be determined by the protection scope of the claims.

Claims

A method for determining network slices, comprising:

The terminal device receives the first message sent by the core network device via the access network device, where the first message includes information about at least one first network slice and information about at least one independent networking non-public network SNPN, where the at least one SNPN is The core network device allows the terminal device to use the information of the at least one first network slice to determine the range of the information of the at least one second network slice when the terminal device moves out of the registration area;

When the terminal device moves out of the registration area and moves into the first SNPN, the terminal device determines the information of the at least one second network slice based on the information of the at least one first network slice, and the at least one SNPN including the first SNPN.
The method of claim 1, further comprising:

The terminal device sends a registration update request message to the core network device via the access network device, where the registration update request message includes information of the at least one second network slice.
The method according to claim 1 or 2, wherein the first message further includes an identifier of at least one tracking area included in the registration area.
The method according to any one of claims 1-3, wherein the information of the at least one SNPN is carried by a target information element IE;

The target IE and the identifier of at least one tracking area included in the registration area are jointly encapsulated in a tracking area list; or,

The target IE and the information of the at least one first network slice are jointly encapsulated in allowed network slice selection auxiliary information.
The method according to any one of claims 1-4, wherein the first message is a registration acceptance message; before the terminal device receives the first message sent by the core network device via the access network device, further comprising: :

The terminal device sends a registration request message to the core network device via the access network device, where the registration request message includes information about at least one third network slice;

Wherein, the at least one third network slice includes the at least one first network slice.
The method according to any one of claims 1-4, wherein the first message is a configuration update request message, and the information of the at least one first network slice is information of an updated network slice.
The method according to any one of claims 1-6, wherein the at least one SNPN is an equivalent SNPN.
A method for determining network slices, comprising:

The core network device sends a first message to the terminal device via the access network device, where the first message includes information about at least one first network slice and information about at least one independent networking non-public network (SNPN), where the at least one SNPN is the The core network device allows the terminal device to use the information of the at least one first network slice to determine the range of the information of the at least one second network slice when the terminal device moves out of the registration area.
The method of claim 8, further comprising:

The core network device receives, via the access network device, a registration update request message sent by the terminal device, where the registration update request message includes information about the at least one second network slice;

The core network device sends a registration update acceptance message to the terminal device via the access network device.
The method according to claim 8 or 9, wherein the first message further includes an identification of at least one tracking area included in the registration area.
The method according to any one of claims 8-10, wherein the first message is a registration acceptance message, and before the core network device sends the first message to the terminal device via the access network device, it further includes:

The core network device receives, via the access network device, a registration request message sent by the terminal device, where the registration request message includes information about at least one third network slice, and the at least one third network slice includes the at least A first network slice.
The method according to any one of claims 8-10, wherein the first message is a configuration update request message, and the information of the at least one first network slice is information of an updated network slice.
A communication device, applied to a terminal device, characterized in that it includes:

A transceiver unit, configured to receive a first message sent by a core network device via an access network device, where the first message includes information about at least one first network slice and information about at least one independent networking non-public network SNPN, and the at least A SNPN is a range in which the core network device allows the terminal device to use the information of the at least one first network slice to determine the information of at least one second network slice when it moves out of the registration area;

a processing unit, configured to determine information of the at least one second network slice based on information of the at least one first network slice when the terminal device moves out of the registration area and moves into the first SNPN, the at least one The SNPN includes the first SNPN.
The apparatus of claim 13 wherein,

The transceiving unit is further configured to send a registration update request message to the core network device via the access network device, where the registration update request message includes information of the at least one second network slice.
The apparatus according to claim 13 or 14, wherein the first message further includes an identifier of at least one tracking area included in the registration area.
The device according to any one of claims 13-15, wherein the information of said at least one SNPN is carried by a target information element IE;

The target IE and the identifier of at least one tracking area included in the registration area are jointly encapsulated in a tracking area list; or,

The target IE and the information of the at least one first network slice are jointly encapsulated in allowed network slice selection auxiliary information.
The device according to any one of claims 13-16, wherein the first message is a registration acceptance message;

The transceiving unit is further configured to send a registration request message to the core network device via the access network device, where the registration request message includes information of at least one third network slice;

Wherein, the at least one third network slice includes the at least one first network slice.
The device according to any one of claims 13-16, wherein the first message is a configuration update request message, and the information of the at least one first network slice is information of an updated network slice.
The device according to any one of claims 13-18, wherein the at least one SNPN is an equivalent SNPN.
A communication device, characterized by comprising:

A transceiver unit, configured to send a first message to a terminal device via an access network device, where the first message includes information about at least one first network slice and information about at least one independent networking non-public network SNPN, and the at least one SNPN It is the core network device that allows the terminal device to use the information of the at least one first network slice to determine the range of the information of the at least one second network slice when the terminal device moves out of the registration area.
The apparatus of claim 20, wherein

The transceiving unit is further configured to receive, via the access network device, a registration update request message sent by the terminal device, where the registration update request message includes information about the at least one second network slice;

The transceiving unit is further configured to send a registration update acceptance message to the terminal device via the access network device.
The apparatus according to claim 20 or 21, wherein the first message further includes an identifier of at least one tracking area included in the registration area.
The device according to any one of claims 20-22, wherein the first message is a registration acceptance message, wherein,

The transceiver unit is further configured to receive, via the access network device, a registration request message sent by the terminal device, where the registration request message includes information about at least one third network slice, and the at least one third network slice includes the the at least one first network slice.
The device according to any one of claims 20-22, wherein the first message is a configuration update request message, and the information of the at least one first network slice is information of an updated network slice.
A communication device, characterized by comprising: a processor, when the processor invokes a computer program or instruction in a memory, the method according to any one of claims 1 to 7 or claims 8 to 12 is executed implement.
A communication device, characterized in that it includes: a memory and a processor; the memory is used to store computer programs or instructions, and when the processor invokes the computer programs or instructions in the memory, the measurement processing device executes The method according to any one of claims 1 to 7 or claims 8 to 12.
A computer-readable storage medium, characterized in that the computer-readable storage medium includes a computer program or an instruction, and when the computer program or instruction is run on a computer, the computer executes any of claims 1 to 7 or The method described in any one of 8 to 12 is required.
A communication device, characterized in that it includes a processor, a memory, and a transceiver;

The transceiver is used to receive signals or send signals;

The memory is used to store program codes;

The processor is configured to call the program code from the memory to execute the method according to any one of claims 1-7 or 8-12.
A computer program product, characterized in that, the computer program product includes a computer program or an instruction, and when the computer program or instruction is run on a computer, the computer is made to execute claims 1 to 7 or claims 8 to 12. any one of the methods described.