Method and system for realizing accessing through wireless local area network access network

Abstract

The invention provides a method and a system for realizing accessing through a wireless local area network (WLAN) access network. The method comprises the following steps that: user equipment (UE) accesses an evolved packet core network (EPC) and interacts with access network discovery and selection function (ANDSF) to acquire access network information of a WLAN; and the UE is connected with the wireless local area network access network (WLANAN) and accesses the core network by using the acquired access network information of the WLAN. Because the UE previously accesses the EPC and interacts with the ANDSF to acquire the access network information of the WLAN, namely the UE knows the wireless core network to which the current WLANAN is connected or can be accessed. Thus, the wireless core network which subsequently participates in access authentication is the wireless core network to which the current WLANAN is connected or can be accessed, successful accessing of the UE is ensured, and the load of the UE and the network is reduced, so that the resource is saved and the user experience is enhanced.

Description

technical field [0001] The present invention relates to wireless access technology, in particular to a method and system for realizing access through a wireless local area network (WLANAN, Wireless Local Area Network Access Network). Background technique [0002] In some cases, user equipment (UE, User Equipment) needs to access the following wireless core networks through WLAN AN: such as evolved packet core network (EPC, Evolved Packet Core network), interactive wireless local area network (I-WLAN, Interworking Wireless Local AreaNetwork), Worldwide Interoperability for Microwave Access Network (WIMAX), Code Division Multiple Access (CDMA) network, etc. [0003] figure 1 A schematic diagram of a network architecture for connecting a non-3GPP network to an I-WLAN, wherein the I-WLAN refers to a WLAN network interacting with a 3rd Generation Partnership Project (3GPP, 3rd Generation Partnership Project) network. The purpose of the interaction is to enable the WLAN access t...

AI Technical Summary

Problems solved by technology

[0016] In the prior art, WLAN AN can access I-WLAN and EPC at the same time, but UE does not know which wireless core networks can be accessed at present, so the corresponding authentication steps cannot be adopted, that is, the WLAN AN sends to UE After the EAP request message, the identity sent by the UE to the WLAN AN may not be the wireless core network that the current WLAN AN is connected to or can access. For example, when the UE sends the identity that needs to access the I-WLAN, but actually The WLAN AN is connected to the EPC network, so the access authentication fails. The UE cannot connect to the EPC network until the UE sends the identity authentication of the EPC network. This will cause multiple authentication failures, and these failures increase the load on the UE and the network, and consume Resource loss affects user experience

Images