摘要
针对单径路由协议在高速Ad hoc网络中平均端到端时延和丢包率高的问题,在动态源路由协议的基础上,提出基于邻居节点变化率与路由长度的多径路由协议DSR_HD。利用HELLO消息获得一跳范围内可用邻居数,根据邻居数求得节点的邻居节点变化率。在路由发现过程中,采用路由距离与路由跳数相结合的方法计算路由长度,并选择邻居节点变化率和路由长度低的节点加入路由,从而提高路由的稳定性。仿真实验结果显示,DSR_HD协议可以有效减少数据分组传输的端到端时延及路由开销,提高分组成功投递率。
Aiming at the shortcomings that signal path protocol has high end-to-end delay and packet loss rate in highspeed environments,this paper modifies the Dynamic Source Routing（DSR）protocol,and by using the HELLO message,the number of neighbors can be obtained. According to the number of neighbors,it can calculate the neighbor change ratio. During the routing discovery,it can calculate the length of the routing by using the method of routing distance and routing hops combination,and choose the neighbor node whose neighbor change ratio and route length are lower join the routing. So it can choose the high degree of stability of routing. Simulation results show that under the high-speed environment the algorithm can control the end to end delay of data packet transmission,dramatically increase the successful package delivery ratio and reduce routing overhead.
出处
《计算机工程》
CAS
CSCD
2014年第9期82-86,共5页
Computer Engineering
基金
西北工业大学基础研究基金资助项目(GBKY1011)
