一种负载均衡的RPL多路径数据传输机制  

A Load Balanced RPL Multipath Data Transmission Mechanism

作　　者：刘东东 李勇 徐栋 阮持光 鲁亚凯 刘江兵 LIU Dongdong;LI Yong;XU Dong;RUAN Chiguang;LU Yakai;LIU Jiangbing(Key Lab of Mobile Communication Technology,Chongqing University of Posts and Telecommunications,Chongqing 400065,China)

机构地区：[1]重庆邮电大学移动通信技术重点实验室,重庆400065

出　　处：《计算机工程》2019年第1期67-72,77,共7页Computer Engineering

基　　金：长江学者和创新团队发展计划(IRT_16R72);重庆市科委项目(CSTC2012jjA40044;CSTC2013yykfA40010)

摘　　要：低功耗有损网络路由协议(RPL)由于负载不均衡导致节点能耗失衡。为此,提出一种RPL多路径数据传输机制。在网络拓扑构建过程中依据数据传输代价选出每个节点的最优多父节点集。结合无线链路质量、节点剩余能量、节点缓存占用率以及中继节点的子节点数量等度量,设计一种数据流量分配度量标准,基于该度量标准提出能够最大化均衡网络负载的流量分配策略,以获得最优数据传输方案。仿真结果表明,相对RPL、ELT-RPL机制,该机制能够最大化地实现负载与节点能耗均衡,延长网络生存时间并提高路由可靠性。Routing Protocol for Low Power and Lossy Networks(RPL)results in unbalanced energy consumption due to unbalanced load.To solve this problem,a RPL multipath data transmission mechanism is proposed.In the process of network topology construction,the optimal multi-parent node set of each node is selected according to the data transmission cost.Combining with wireless link quality,node residual energy,node cache occupancy rate and the number of relay nodes,a data flow allocation metric is proposed.Based on this metric,a flow allocation strategy is proposed to maximize the load balance of the network to obtain the optimal data transmission scheme.Simulation results show that compared with RPL and ELT-RPL,this mechanism can maximize load balance and node energy consumption balance,prolong network lifetime and improve routing reliability.

关 键 词：低功耗有损网络路由协议 数据传输 多路径 度量标准 流量分配 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]