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Network switching method and device

A network and network time technology, applied in the field of wireless communication, can solve the problem of time extension when switching to NPN, and achieve the effect of reducing delay

Active Publication Date: 2020-05-19
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the access process from PLMN to NPN involves related signaling procedures, such as authentication and authorization, etc., which will cause too long a delay for the UE to switch from PLMN to NPN

Method used

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Embodiment Construction

[0079] The technical solution in this application will be described below with reference to the accompanying drawings.

[0080] Currently, the 3GPP standard organization has introduced the concept of a non-public network (non-public network, NPN). Alternatively, a non-public network is also called a private network. The network architecture of NPN refers to the network architecture of 5G core network (5G core, 5GC). Therefore, NPN also includes the functions of network elements similar to 5GC. For example, NPN also includes network elements such as AMF, SMF, UPF, AUSF and UDM. function.

[0081] see figure 1 , figure 1 (a) and (b) are schematic diagrams of a UE accessing a public network and a non-public network, respectively. The public network may be, for example, a public land mobile network (public land mobile network, PLMN). Such as figure 1 As shown in (a), the UE obtains the service provided by the PLMN through the access network and the core network of the PLMN. ...

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Abstract

The invention provides a network switching method, which can optimize the switching of UE between a PLMN and an NPN. The method comprises the following steps that: terminal equipment accesses a firstnetwork, when the terminal equipment determines that a second network needs to be accessed, the terminal equipment determines identification information of the second network, wherein one of the firstnetwork and the second network is a public network and the other one is a non-public network, and the terminal equipment sends a first request message to a first access and mobility management function AMF of the first network, wherein the first request message carries identification information of the second network and first identification information of the terminal device and the identification information of the second network and the first identification information of the terminal device are used for authentication and / or authorization of the terminal device in the second network.

Description

technical field [0001] The present application relates to the field of wireless communication, and more specifically, to a method and device for switching networks. Background technique [0002] The third generation standard protocol partner (3rd generation partnership project, 3GPP) has introduced the concept of non-public network (non-public network, NPN). The architecture of the NPN refers to the architecture of the 5G core network defined by 3GPP, that is, it is assumed that the NPN network also includes the same network element functions as the 5GC, such as access and mobility management functions (coreaccess and mobility management function, AMF), session Management function (session management function, SMF) and user plane function (user plane function, UPF), etc. According to the existing mechanism, a user equipment (user equipment, UE) establishes a protocol data unit (protocol data unit, PDU) session on a public land mobile network (public land mobile network, PLM...

Claims

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Application Information

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IPC IPC(8): H04W12/06H04W36/00H04W36/14H04W12/08
CPCH04W12/06H04W36/0033H04W36/0066H04W36/14H04W36/00
Inventor 靳维生陆伟李欢
Owner HUAWEI TECH CO LTD
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