摘要
OLSR是一种应用于无线移动Ad hoc网络的基于链路状态机制的先应式路由协议。在OLSR中,网络拓扑的动态变化会使节点掌握的拓扑信息失效,从而导致路由表项不全,影响路由性能。针对上述问题,提出了一种基于拓扑维护的自适应多信道路由协议MOLSR-TM,该协议把拓扑维护状况感知和自适应算法引入OLSR,以调整HELLO控制消息的发送频率和邻居记录表、拓扑记录表的刷新频率。性能分析和仿真结果表明,MOLSR-TM能改善节点的拓扑维护状况,增强动态拓扑适应能力,提高数据成功率、端到端时延和网络吞吐率等性能。
OLSR is a proactive link-state routing protocol used in wireless mobile ad hoc networks. In OL SR, because of the dynamic change of the network topology, topology information will be invalid, as well as some entries of the route table. To address the problem, MOLSR-TM, an adaptive multichannel routing protocol based on topology maintenance is presented. It introduces the perceiving of topology maintenance and an a daptive algorithm into OLSR to adjust the transmitting frequency of control messages and the refresh rate of the neighbor table and the topology table. Performance analysis and simulation results show that MOLSR-TM can not only be used to improve the status of topology maintenance and the ability of adapting the dynamic topology, but also to improve the network performances, such as increasing the packet delivery rate and network throughput and reducing the end-to-end delay.
出处
《系统工程与电子技术》
EI
CSCD
北大核心
2006年第7期977-980,共4页
Systems Engineering and Electronics
基金
"世纪优秀人才支持计划"项目(2004年度)
战术通信抗干扰技术国防科技重点
关键词
无线移动Ad
HOC网
OLSR
多信道
自适应
拓扑维护
wireless mobile Ad hoc network
OLSR
multiple channels
self-adapting
topology maintenance
