适用于数据链网络的改进动态源路由协议  

Improved dynamic source routing protocol for data link network

作　　者：王赵波[1] 张有光[1] 唐积强[1] 

机构地区：[1]北京航空航天大学电子信息工程学院,北京100191

出　　处：《计算机工程与设计》2011年第8期2623-2626,共4页Computer Engineering and Design

摘　　要：动态源路由(DSR)协议在数据链网络中的缺点是控制开销过大,导致低网络带宽时容易发生拥塞,根据数据链网络节点的群组移动特性,提出了一种基于位置估计的协议改进方法。将节点位置信息应用到协议中,分别从路由发现和路由维护两个方面减少协议的控制开销,当与下一跳节点链路断开时,通过依次搜索本节点到后续节点的路由来提高数据包的拯救概率。仿真实验结果表明,改进算法有效地控制了协议开销,同时又减小了数据包丢弃的概率。The drawback of dynamic source routing （DSR） in data link network is excessive control overhead, easily leading to congestion because of low bandwidth. A location estimation method based on group mobility in data link network is proposed to reduce the control overhead from both route discovery and route maintenance aspects by applying position information into DSR. When the link to the next hop breaks, the current node tries to find whether there is a path to the node in the second half of the broken route one by one, thereby increasing data packets＇ possibility of being salvaged. Simulation results show that the protocol overhead is effectively controlled and the probability of packet dropped is reduced.

关 键 词：数据链网络 群组移动 位置估计 路由发现 路由维护 

分 类 号：TN915.04[电子电信—通信与信息系统]