摘要
将网络编码技术应用到无线传感器网络中以提高网络的传输效率是近年来国内外研究的一大热点,相交多径网络编码模型是一种具有高可靠性的基于网络编码的多径路由模型,而目前将相交多径网络编码模型应用在无线传感网的多径路由协议中的研究并不多。通过使用基于地理位置划分虚拟网格的方法设计了一种相交多径网络编码模型的路由协议BRGNC(Braided multipath Routing protocol based on Grid with Network Coding)。在路由过程中先根据网格的能量情况、链路质量、节点个数等因素选择下一跳网格,再通过网格内节点状态选择"最优的"转发节点集,从而降低了以往按照相交多径网络编码模型建立无线传感网的多径路由协议的难度。仿真实验结果表明,该协议具备较好的可靠性和能耗均衡性,在网络规模较大、链路状态较差的情况下也能够很好地保证数据的可靠传输。
How to use the network coding technology in wireless sensor network to improve the performance of the networks is becoming a hot research area in recent years.Multipath transmission is an effective method to improve the transmission reliability.Among the multipath network coding models,the braid-multipath network coding model is a reliable routing model and is very suitable for large-scale networks.In this paper,we designed a new routing protocol called BRGNC（Braided multipath Routing protocol based on Grid with Network Coding）for large-scale wireless sensor networks.Firstly,we divided the network into virtual grids by using the nodes＇ location information,and we selected the next-hop grid based on many factors including the nodes＇ residual energy,link quality and network density.And then we selected the＂optimal＂nodes as the candidate sets.At the same time,we used network coding technology to improve the transmission reliability.Simulation results show that the BRGNC protocol can greatly improve the reliability of the transmission,extend the lifetime of the network in large-scale sensor networks with the instable link.
出处
《计算机科学》
CSCD
北大核心
2016年第11期135-141,共7页
Computer Science
基金
国家自然科学基金(61401234)
江苏高校优势学科工程资助项目
江苏省政府留学奖学金资助
