基于TEASE管道技术的异构网络垂直切换安全认证算法

Security certification algorithm for vertical handoff in heterogeneous networks based on TEASE pipeline technique

基于WLAN和UMTS构建的异构网络模型,提出一种适合该模型的垂直切换安全认证算法,用临时管道密钥(TTK)对数据进行加密,在接收端再用TTK进行数据解密。用平均切换次数、传输时延和丢包率三个指标评价所提出算法的性能。与已有垂直切换算法进行性能比较,其结果表明,提出的算法能有效减少切换次数,消除乒乓效应,减少传输时延和丢包率,可为实时业务所需的无缝切换提供有力保障。

Based on a heterogeneous network model constituted by WLAN and UMTS,this paper proposed a security certification algorithm for vertical handoff in such a network.It used TTK to encrypt data and used TTK to decrept data at the receiver.Three indices,i.e.,times of handoff,transmission delay and packet loss rate were adopted to assess the performance of the proposed algorithm.Compared with existing vertical handoff algorithms,simulation results indicate that the proposed algorithm can reduce the times of handoff effectively and eliminate the pong effect,reduce the transmission delay and the packet loss rate,and strongly support the seamless handoff for real-time services.