DSR协议cache管理策略的优化  

Optimization on Cache Management Strategy of DSR Protocol

作　　者：李学桥[1] 赵磊[1] 贾小爱[1] 徐本福[1] 

机构地区：[1]郑州轻工业学院计算机与通信工程学院,河南郑州450002

出　　处：《通信技术》2009年第4期85-87,共3页Communications Technology

摘　　要：针对DSR协议不能充分利用潜在路由信息、路由缓存中过期路由影响路由选择准确性以及存在数据分组额外开销较大的问题,从cache管理策略方面提出了一种优化方案——采用链路缓存与"超时"机制相结合的方法,减小数据分组头的开销,充分利用潜在路由信息,保证路由缓存中路由选择的准确性。仿真结果表明,优化后的协议能够显著降低网络开销及时延。DSR protocol could not take full advantage of the potential routing information, and the expired routing in routing cache influences the routing accuracy, thus there exists the problem overhead additional overhead from data packet. This paper presents an optimal scheme in the cache management strategy, that is, the combination of link cache with ＂timeout＂ mechanism, thus reducing the cost of data-packet head, taking full advantage of the potential routing information, guaranteeing the routing accuracy in routing cache. The simulation results show that the optimized protocol could significantly reduce the network overhead and time delay.

关 键 词：DSR协议 cache管理 链路缓存 “超时”机制 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]