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A network slice access method, nssf, amf and system

A network slicing and access method technology, applied in access restriction, transmission system, connection management, etc., can solve problems such as poor service continuity of users, achieve the effect of ensuring continuity and improving experience

Active Publication Date: 2022-05-17
CHINA UNITED NETWORK COMM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a network slicing access method, NSSF, AMF and system for the above-mentioned deficiencies in the prior art, so as to solve the problems caused by the current AMF cannot meet all slicing service requirements of the terminal, and the current AMF needs to be disconnected and redirected to a new AMF, resulting in the release of the established PDU session, which may easily lead to poor service continuity for users

Method used

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  • A network slice access method, nssf, amf and system
  • A network slice access method, nssf, amf and system
  • A network slice access method, nssf, amf and system

Examples

Experimental program
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Embodiment 1

[0053] This embodiment provides a network slicing access method, such as figure 1 As shown, the method includes:

[0054] Step S102: Obtain a second AMF that meets the service requirements of the second network slice for which the terminal applies for access, wherein the terminal has established a PDU session in the first network slice based on the first user identifier.

[0055] In this embodiment, the terminal has connected to the first network slice and established a PDU session of the first network slice. At this time, if it needs to connect to the second network slice, the terminal sends an application for accessing the second network slice to the current AMF through the base station The access request specifically includes the second network slice identifier, that is, NSSAI (Network Slice Selection Assistance Information, network slice selection support information). The current AMF judges whether it meets the service requirements of the second network slice. If the cur...

Embodiment 2

[0084] Such as image 3 As shown, this embodiment provides a network slicing access method, which is applied to the current AMF, and the method includes:

[0085] Step S202: Receive the second AMF identifier sent by the NSSF and the second user identifier assigned to the terminal, where the terminal has established a PDU session in the first network slice based on the first user identifier, and the second AMF identifier corresponds to the second AMF Satisfying the business requirements of the second network slice for which the terminal applies for connection;

[0086] Step S204: Receive the request message sent by the second AMF for obtaining the terminal user security context, and send the terminal user security context and the second user identity to the second AMF based on the request message, and maintain the PDU session, so that the second AMF When judging that the registration of the terminal fails according to the received second user identification, send an identity v...

Embodiment 3

[0094] Such as Figure 4 As shown, this embodiment provides a network slice access method, which is applied to the second AMF, and the method includes:

[0095] Step S302: Receive a registration request carrying a second network slice identifier sent by the terminal, wherein the terminal has established a PDU session in the first network slice based on the first user identifier;

[0096] Step S304: Send a request message to the current AMF to obtain the terminal user security context, so that the current AMF sends the terminal user security context and the second user identity assigned to the terminal by the NSSF to the second AMF based on the request message, and maintains the PDU session ;

[0097] Step S306: Receive the user security context and the second user identifier of the terminal sent by the current AMF;

[0098] Step S308: judge whether the terminal is successfully registered according to the second user ID, if not, send an identity verification request to the te...

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Abstract

The present invention provides a network slicing access method, NSSF, AMF and system. The method includes: acquiring a second AMF that satisfies the service requirements of a second network slicing that a terminal applies for accessing, wherein the terminal has already based on the first A user ID establishes a PDU session in the first network slice; assigns a second user ID to the terminal, and sends the second user ID and the second AMF ID to the terminal, the current AMF, and the core network authentication network Yuan. The method, NSSF, AMF and system can solve the problem that in related technologies, when a terminal needs to connect to multiple slice services, because the current AMF cannot meet all the slice service requirements of the terminal, it is necessary to disconnect the current AMF and redirect to a new AMF, resulting in The established PDU session is released, which easily leads to poor service continuity for users.

Description

technical field [0001] The present invention relates to the field of network technology, in particular to a network slice access method, NSSF, AMF and system. Background technique [0002] During the existing 5G session, the terminal may need to connect to multiple slice services at the same time. If the currently connected AMF (Access and Mobility Management Function, access and mobility management function) cannot meet the service requirements (rate, delay, etc.) of all slices of the terminal , bandwidth, etc.), the current AMF will be redirected to a new AMF to meet the service requirements of all slices of the terminal. At this time, because the AMF redirection needs to disconnect the current AMF, the established PDU (Protocol Data Unit , protocol data unit) session is released, which leads to the problem of poor service continuity for the user. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a network slice...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W48/08H04W48/16H04W76/11H04W76/15H04L67/145H04L41/0893
CPCH04W48/08H04W48/16H04W76/11H04W76/15H04L67/145H04L41/0893
Inventor 王鑫魏进武
Owner CHINA UNITED NETWORK COMM GRP CO LTD