Abstract: The on-demand routing protocol DSR is a good performance protocol in mobile Ad Hoc networks. However, the defect of it is that it is not quick enough to adapt the fast-changing topology of the Ad Hoc networks. It causes many unneeded times of route discovering, and the data-packets always don’t take the shortest route. These result in the low-efficiency. To solve the problem, DSR is optimized in this paper, and a mechanism called local self-adaptation is proposed, which can recover and adjust the route automatically. Also it presents a new routing protocol called LSDSR, which can obviously decrease the times of route discovering and transmission latency, and much more adapt to the real-time performance.

Key words: wireless Ad Hoc network, DSR, local self-adaptation, route discovering, transmission latency

摘要： 按需路由协议动态源路由(DSR)是Ad Hoc网络路由协议中性能较优的一种，但对快速变化的移动网络拓扑结构反应较慢，造成过多地启动不必要的路由发现过程以及数据包发送路径绕远，从而导致效率降低。该文针对这一问题，对DSR协议进行优化，提出节点局部自适应机制，对于路由断路绕远等问题进行自动恢复调整。给出局部自适应DSR路由协议LSDSR，优化后的协议减少了路由发现次数和传输时延，更适用于实时业务。

关键词: 无线自组织网, 动态源路由, 局部自适应, 路由发现, 传输时延

CLC Number: 

• TP393