本文件实现定时器到期的处理，如到达路由发现最大时间，hello定时器到期，路由条目存在时间到期等等。-This document is due to achieve the processing timer, such as route discovery to reach the maximum time, hello timer expires, the routing entries expire so there is time.

无线自组网络，dsr的路由算法，adhoc,路由选择-Wireless ad hoc networks, dsr routing algorithm, adhoc, routing