摘要
为了提高认知无线Ad Hoc网络路由算法的性能,提出一种基于多层图转移概率的认知无线Ad Hoc多跳路由算法。首先,采用多层图进行认知无线Ad Hoc路由模型的构建,并设计一种多跳协议的改进形式;其次,提出一种基于概率的信道转移概率估计技术,每个SU在路由生成之前构造转移概率矩阵。基于所有者PU的ON/OFF状态,对每个信道分配一个稳定常数,提出一种新的基于转移概率路径选择的认知无线电Ad Hoc网络路由协议。实验结果表明,该算法可选择任何一对源节点和目的节点之间最稳定的路径,可有效提升网络路径生存时间、路由开销和数据包丢失率等性能指标,体现了算法的性能优势。
A multihop routing algorithm based on the multilayer graph transition probability is proposed for cognitive radio Ad Hoc network to promote the performance of routing algorithm of cognitive radio Ad Hoc network.The multilayer graph is used to construct the routing model of cognitive radio Ad Hoc network,and design an improved form for multihop protocol.And then a channel transition probability estimation technique based on probability is proposed to construct the transition probability matrix by each SU before the generation the routing.On the basis of ON/OFF state of the owner PU,a stable constant is assigned to each channel,and a novel cognitive radio Ad Hoc network routing protocol based on transition probability routing selection is proposed.The experimental results show that the algorithm can choose the most stable path between any pair of source nodes and destination nodes,can effectively improve the survival time of network path,routing overhead,packet loss rate and other performance indicators,which reflects the performance advantages of the algorithm.
作者
郭绪坤
范冰冰
陈纯炼
GUO Xukun;FAN Bingbing;CHEN Chunlian(School of Computer,South China Normal University,Guangzhou 510631,China;Laboratory of Economics and Management Department,Zhongshan Institute,University of Electronic Science and Technology of China,Zhongshan 528402,China)
出处
《现代电子技术》
北大核心
2018年第23期81-86,共6页
Modern Electronics Technique
基金
2015年广东省教育厅重点平台及科研项目青年创新人才项目(自然科学类)(2015KQNCX078)
2012年广东省自然科学基金博士启动项目(S2012040007599)
2014年广东省教育科学研究项目(2014GXJK081)~~
关键词
AD
HOC网络
多层图
转移概率
多跳协议
路由算法
性能指标提升
Ad Hoc network
multilayer graph
transition probability
multihop protocol
routing algorithm
performance indicator promotion
