摘要
提出了一种基于地理位置信息的无线网络路由协议LADRU,以增强高移动性网络TCP的性能。协议采用单播和广播相结合的礼花式广播来减少系统开销,以随机竞争方式探测路由,减少寻找新路由的代价。通过估计网络节点的运动速率来自动调节路由探测周期,使路由得到及时更新。采用标签路由方法传递数据包,解决源路由方式数据包头过大和路由切换问题。仿真结果表明LADRU能有效地提高数据传输率和系统吞吐率。
A geographical location based muting protocol is presented to augment TCP performance in high mobility wireless ad-hoc networks. This paper introduces a skyrocket broadcast by the integration of unicast and broadcast, which can drop system overhead. A new routing detection method is introduced based on random competition, which reduces the cost of routing discovery. The routing can be updated in time through periodic routing detection whose interval is adjusted automatically according to the estimation of nodes＇ speed. The data packets are transmitted by a new label routing method that can reduce the packets＇ head and make it easy to switch to a new routing. The simulation shows that LADRU can increase delivery ratio and throughput of TCP.
出处
《计算机工程》
CAS
CSCD
北大核心
2007年第13期144-146,149,共4页
Computer Engineering
关键词
TCP
地理位置
随机竞争
标签路由
TCP
geographical location
random competition
label routing
