基于WAPI的无线局域网快速切换的研究与实现  

Study and implementation of fast handoff based on WAPI for WLAN

作　　者：李涛[1] 龙昭华[1] 

机构地区：[1]重庆邮电大学移动通信重点实验室,重庆400065

出　　处：《计算机工程与设计》2011年第5期1581-1584,共4页Computer Engineering and Design

基　　金：国家质检总局公益性行业科研专项经费基金项目(10-226);重庆市科技攻关基金项目(CSTC;2007AC2053)

摘　　要：为了解决在无线局域网中移动终端切换时产生的时延和抖动对实时业务质量的严重影响,通过分析移动终端媒体访问控制层切换的过程和无线局域网鉴别和保密基础结构,提出了一种基于证书预鉴别的WAPI快速切换算法。该算法采用扫描和切换阈值,通过对证书进行预鉴别,有效地减少了切换过程中的扫描和认证时延,提高了切换效率。在无线网卡驱动中,对该算法完成了软件实现,并且在嵌入式移动终端中进行了测试,结果表明了该算法的良好效果。To solve the seriously affect of both latency and jittering on real-time service while handoffin WLAN. The process ofhandoff in media access control and wireless local area network authentication and privacy infrastructure are analyzed. A fast handoff algorithm based on pre-authentication ofcertificate in WAPI is presented. The Algorithm uses scanning and authenticate threshold, andpre-authen-ticate of the certificate to decrease the latency of scanning and authentication. The program for the algorithm is accomplished in wireless network adapter driver, and the test is realized in the embedded terminal.

关 键 词：无线局域网 无线局域网鉴别和保密基础结构 快速切换 预鉴别 实时业务 

分 类 号：TP39[自动化与计算机技术—计算机应用技术]