DSR协议的路由缓存策略  

Route Cache Strategy for DSR Protocol

作　　者：庄春梅[1] 王利利[1] 陆建德[1] 

机构地区：[1]苏州大学计算机科学与技术学院江苏省计算机信息处理技术重点实验室,苏州215006

出　　处：《计算机工程》2010年第2期100-101,共2页Computer Engineering

摘　　要：分析移动自组网动态源路由(DSR)协议路由缓存中存在的问题及其对DSR协议性能的影响。针对DSR路由缓存中失效路由导致该协议性能下降的问题,在DSR协议中引入AODV协议的局部连接性管理机制,提出可以主动发现过期路由的DSR(DSR-SRAD)协议,阐述其设计思想和实现细节。采用网络仿真软件NS2测试DSR-SRAD,DSR和AODV,结果表明DSR-SRAD协议的分组传送成功率较高,其平均端到端延迟和路由控制开销较小。This paper analyzes the problems existing in route caching of Dynamic Source Routing（DSR） protocol for mobile Ad hoc networking and its effects to DSR protocol performance. Aiming at the performance decrease problem of DSR protocol caused by stale routes in DSR route caching,the local connectivity management mechanism in AODV protocol are introduced into DSR protocol. It presents DSR with Stale Route Active Discover（DSR-SRAD） protocol and expatiates its design thoughts and implementation detail. DSR-SRAD,DSR and AODV are tested by network simulation software——NS2 and the results show that DSR-SRAD protocol has high packets delivery ratio,lower average end to end delay and routing control overhead.

关 键 词：DSR协议 AODV协议 缓存 源路由 仿真 

分 类 号：TP301.6[自动化与计算机技术—计算机系统结构] TN915.04[自动化与计算机技术—计算机科学与技术]