Method for realizing roaming authentication of mobile terminal in wireless local area network and access point

Abstract

The invention relates to a method for realizing roaming authentication of a mobile terminal in a wireless local area network and a wireless access point. The method comprises the following steps: an AP in the wireless local area network forms a Chord ring through a point-to-point Chord algorithm; the mobile terminal firstly accesses to the wireless local area network to complete the identity authentication through the AP; the AP generates a temporary session key through repeatedly shaking hands with the mobile terminal according to the session master key information distributed by a server tocomplete the authentication, and distributes the session mater key information to a corresponding AP in the Chord ring; and the mobile terminal roams and requests to access in another AP, the anotherAP acquires the session master key information from the AP stored with the master key information, and shakes hands with the mobile terminal repeatedly by utilizing the session master key informationto generate a temporary session key so as to complete the roaming authentication. The invention can reduce the changing-over delay of the mobile terminal, ensure the service quality of real-time communication, and reduce the burden of an authentication server so as to solve the problem of single fault point.

Description

technical field [0001] The present invention relates to a wireless local area network (Wireless Local Area Network, WLAN) system, in particular to a method and system for realizing roaming authentication of a mobile terminal in a wireless local area network. Background technique [0002] With the development of wireless transmission technology and the increasing number of wireless devices, wireless LAN has become a new generation of high-speed access network, but due to the openness and sharing of wireless LAN transmission media, all unauthorized users can easily access access to the wireless local area network, so as to intercept, tamper and counterfeit the user information in the wireless local area network; at the same time, the original wireless local area network based on open system authentication and shared key authentication has been proved to be insecure, so based on IEEE802.11i ( Authentication and Encryption Protocols in Wireless Local Area Networks) Wireless LANs...

AI Technical Summary

Problems solved by technology

[0010] The technical problem to be solved by the present invention is to provide a method for realizing roaming authentication of a mobile terminal in a wireless local area network and a corresponding wireless access point, reduce the switching delay of the mobile terminal to ensure the quality of service of real-time communication, and at the same time reduce the workload of the authentication server. Burden to solve single point of failure problems

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