摘要
在考虑节点信道质量、移动方向和速率、剩余能耗等本地信息的基础上,在移动传感网中提出了基于本地信息的机会路由策略(OR-LI)。该策略采用能在一定程度上反映信道质量的接收信号强度指示值对数-常态分布模型建立节点机会概率值;引入移动速率和方向反映节点的移动性;使用节点的剩余能耗反映节点的剩余使用寿命,实现机会路由,并通过候选节点的优选序号来确定候选点的侦听转发时间以避免报文重发。与机会路由策略ExOR和OB比,新策略更适合移动传感网,具有传输有效性高、能耗低等优点。
An opportunistic routing strategy was proposed based on the analyses of the channel quality,the movement speed and energy cost of a node synthetically.The received signal strength indicator was used to build opportunity probability.And then,the movement speed was used to reflect the node mobility.At last,the energy cost was used to express node residual life.The opportunistic routing was built by them and the preferred number of a candidate node was defined in order to determine its listening forwarding time.Furthermore the problem of package retransmission was solved.The analysis and simulation show that,compared with Extremely Opportunistic Routing(ExOR) and Opportunistic with Backtracking(OB),the new strategy is more suitable for opportunistic network with higher validity and lower energy cost.
引文
[1]尚凤军,任东海.无线传感器网络中分布式多跳路由算法研究[J].传感技术学报,2012,25(4):529-534.
[2]PELUSI L,PASSARLLA A,CONTI M.Opportunistic networking:data forwarding in disconnected mobile Ad Hoc networks[J].IEEE Communication Magazine,2006,44(11):84-91.
[3]石为人,柏荡,高鹏,等.无线传感器网络簇头半径自适应调节路由算法[J].仪器仪表学报,2012,33(8):1779-1785.
[4]邬春学,叶胤鹏,许博威.基于梯度阈值和时延的定向扩散路由协议[J].计算机工程,2012,38(7):77-79.
[5]BISWAS S,MORRIS R.ExOR:Opportunistic routing in multi-hop wireless networks[C]//Proceedings of the ACM SIGCOMM2005.New York:ACM,2005:133-143.
[6]ROZNER E,SESHADRI J,MEHTA Y,et al.Simple opportunistic routing protocol for wireless mesh networks[C]//Proceedings of the IEEE WiMesh2006.Washington,DC:IEEE Computer Society,2006:48-54.
[7]CAO Q,ABDELZAHER T,HE T,et al.Cluster-based forwarding for reliable end-to-end delivery in wireless sensor networks[C]//Pro-ceedings of the IEEE INFOCOM2007.Washington,DC:IEEE Computer Society,2007:1928-1936.
[8]NASSR M S,JANGEUN J,EIDENBENZ S J,et al.Scalable and re-liable sensor network routing:performance study from field deploy-ment[C]//Proceedings of the IEEE INFOCOM2007.Washington,DC:IEEE Computer Society,2007:670-678.
[9]GRAY C,SANTHAPURI N,NELAKUDITI S.On bit-rate selection for opportunistic routing[C]//Proceedings of the IEEE SECON 2008.Washington,DC:IEEE Computer Society,2008:1-6.
[10]ZENG K,LOU W,ZHAI H.On end-to-end throughput of opportun-istic routing in multirate and multihop wireless networks[C]//Pro-ceedings of the IEEE INFOCOM2008.Washington,DC:IEEE Computer Society,2008:816-824.
[11]AITSAADI N,BLASZCZYSZYN B,MUHLETHALER P.Perform-ance of opportunistic routing in low duty-cycle wireless sensor net-works[C]//Proceedings of the Wireless Days.Dublin,Ireland:Wireless Days,2012:1-3.
[12]张勇.基于ZigBee无线测距模型的建立[J].煤炭技术,2012,31(9):121-122.
[13]杨斌,田勇,檀傈锰,等.基于时间序列预测的延迟容忍网络路由算法[J].北京邮电大学学报,2011,34(6):91-94.
