摘要
动态源路由(DSR)协议是一种按需路由协议,存在着搜索路由时延较大,没有考虑节点能量等问题。针对DSR协议的这些不足,提出一种改进的DSR(IDSR)协议。IDSR协议首先预测即将发送数据的节点,然后应用小世界理论提前探测出该节点所在网络的拓扑结构。当预测准确时,可以省去路由发现过程,减少传输时延。在进行路由选择时,以时延和剩余能量作为最佳路由的选择标准,提供QoS支持。仿真实验表明:与DSR协议相比,IDSR协议降低了路由开销、平均时延和平均跳数,分组抵达率和网络生存周期也有一定程度提高。
DSR is an on-demand routing protocol,it takes a lot of time to find a path,and does not take into account the problem of node energy.Aiming at these deficiencies of DSR protocol,an improving DSR protocol which called IDSR protocol is proposed.At first,a node which will send data will be predicted,and then a network topology of the node will be detected using small world theory.If the prediction is right,it will not waste time to find the path,thereby reducing the transmission delay.Uses latency and residual energy as selection criteria of the best routing,which provides QoS support.Simulation results show that compared with DSR protocol,IDSR protocol reduces routing overhead,average delay and average hops,and the packet arrival rate and network life cycle are improved to some extent.
出处
《传感器与微系统》
CSCD
北大核心
2014年第2期43-46,共4页
Transducer and Microsystem Technologies
基金
河南省教育厅科学技术研究重点项目(14A520021)
关键词
移动自组织网络
动态源路由协议
小世界理论
服务质量
剩余能量
Ad Hoc network
dynamic source routing （DSR） protocol
small world theory
quality of service （QoS）
residual energy
