DSR路由协议的改进  

An Improvement to DSR Routing Protocol

作　　者：苏娇娆[1] 

机构地区：[1]北京军区总医院信息科,北京100700

出　　处：《电子科技》2015年第4期38-42,共5页Electronic Science and Technology

摘　　要：DSR路由协议是移动Ad Hoc网络常用的按需路由协议之一。由于采用洪泛机制寻找和维护路由表,DSR路由协议能量开销高、分组交付率低。针对此问题,提出局部化路由查询方法,限制路由请求跳数,改进DSR路由协议的路由发现过程,有效地平衡了路由信息存储量、网络拥塞和能量消耗。分析表明,改进的DSR路由协议将路由请求分组控制在一定的网络范围内,减少数据传输时延、降低网络能量开销。仿真结果显示,在选择适当的最大跳数时,改进的DSR路由协议在分组交付率、路由载荷方面均优于传统的DSR路由协议。DSR is one of the most frequently-used on-demand routing protocols in the mobile Ad Hoc networks. DSR protocol is high in energy costs and low in packet delivery fraction because DSR finds and maintains routing table by the flooding mechanism. To this problem, a localized routing discovery method is proposed to control the routing request hops. Also, the routing discovery process is improved so that the storage of the routing information, network jam and energy costs are effectively balanced. The analysis shows that the improved DSR protocol controls the routing request packets to a certain network area. In this way, the data transmission delay and the networks energy costs are reduced. The simulation results show that the improved DSR protocol has the advantages of packet delivery fraction and routing load over the traditional one on choosing the proper maximum hops.

关 键 词：AD HOC DSR路由协议 分组交付率 路由载荷 

分 类 号：TN915.05[电子电信—通信与信息系统]