无线局域网中基于预先认证的快速切换方案

Plan of Fast Switching Based on Beforehand Authentication in Wireless Local Network

在无线局域网中,为了降低切换时间,提出一种新的快速的切换方案。采用预先认证的快速切换方案,当STA到达AP的覆盖范围时,在发起切换之前先对AP的所有邻接AP进行提前认证,当需要认证时,认证过程已经完成,当STA需要与某个新AP进行关联时,就不需要再进行认证了,因此大大减少了认证延迟,从而减少了切换延迟。仿真结果表明,该方法优于传统切换方法,切换时延小。

In wireless local network,in order to reduce switching time,a new and fast switching plan is addressed.By using the fast switching plan of predictive authentication,while STA arrive coverage area of AP,the predictive authentication has been made for all adjoining AP of AP before initiating switching,while needing authentication,authentication process has completed. While STA needs to make correlation with some new AP,and it needs no authentication,so it greatly reduce authentication delaying and switching delaying.Simulation results show that the method is better than traditional switching method,switching time delaying lower.