Batch switching authentication and key agreement method for heterogeneous network

Abstract

The invention provides a batch switching authentication and key agreement method for a heterogeneous network, and the method mainly comprises the following steps: system establishing and participant registering: registering users participating in authentication in an LTEA network to obtain respective identity information; B, access authentication: when a large number of users request to access theWLAN at the same time, employing a discovery function module ANDSF to discover a target network WLAN, and enabling a leader to send a complete group authentication message to an AAA server of the WLAN to request identity authentication, wherein after the authentication succeeds, the AAA server of the WLAN returns an identity authentication response; C, if the authentication fails, stopping the protocol from being continuously executed. According to the method, the batch authentication of switching the user from the LTEA network to the WLAN network is effectively realized, so the authentication efficiency is high, the signaling overhead is low, and the security is good.

Description

technical field [0001] The invention belongs to the technical field of heterogeneous networks integrated with LTE-A and WLAN, and in particular relates to a heterogeneous network-oriented batch handover authentication and key agreement method. Background technique [0002] In recent years, with the continuous popularization of mobile devices, users' demand for real-time and stable wireless networks has increased rapidly. They not only require basic communication services, but also hope to enjoy rich multimedia services such as online games and videos. With the advent of the 5G era, the new generation of wireless communication systems will integrate different radio access technologies to support secure and seamless handover of user equipment as well as applications and services with different quality of service (QoS) requirements. The integrated heterogeneous network is composed of nodes with different transmission power and coverage. High Power Node (HPN) covers a wide area,...

AI Technical Summary

Problems solved by technology

Due to the heterogeneous network architecture, the user has no clear access strategy for the mobile access gateway of the target access network. If each user independently uses the discovery function module ANDSF to request access gateway information, it will not only cause serious network congestion, but also cause serious network congestion. It will also consume a lot of network resources, and the computing overhead and communication overhead will increase exponentially

[0005] (2) Low security level

In a heterogeneous network, relevant signaling is transmitted through an open air interface. During this process, the protocol cannot provide privacy protection and is vulnerable to various malicious attacks such as impersonation, man-in-the-middle attacks, replay attacks, and redirection attacks.

At the same time, the session key negotiated between the target access network and the user does not have forward / backward security. Once the session key is leaked, confidential information will be leaked, and the entire communication process will no longer be secure.

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