LLN中基于负载均衡的单路径路由协议  

Load balance-based single path routing protocol for LLN

作　　者：陈苏海[1] 党向盈[2] CHEN Su-hai;DANG Xiang-ying(School of Information and Electrical Engineering,Xuzhou University of Technology,Xuzhou 221000,China;School of Information and Control Engineering,China University of Mining and Technology,Xuzhou 221000,China)

机构地区：[1]徐州工程学院信电工程学院 [2]中国矿业大学信息与控制学院

出　　处：《计算机工程与设计》2018年第10期3018-3023,共6页Computer Engineering and Design

基　　金：江苏省科技计划基金项目(BY2015024-03)

摘　　要：由于低功耗有损网络(low power and lossy networks,LLN)中的单路径路由协议在网络拓扑的构建过程中存在不能较好地均衡节点能耗速率和延长网络寿命等问题,提出一种基于负载均衡的单路径LLN路由协议(load balance-based single path routing protocol for LLN,LB-RPL)。在选择备选父节点的过程中对无线链路质量、节点剩余能量和节点缓存占用率依次进行考量;在计算路由度量的过程中综合考虑多种路由判据,避免单一路由判据对网络性能造成的影响;依据整条路径上的数据传输代价选择节点的最优父节点。理论分析和仿真结果表明,相对于现有单路径LLN路由协议,LB-RPL能够有效均衡节点能耗、延长网络寿命并提高路由可靠性。The existing single path routing protocols for low power and lossy networks(LLN)make the energy consumption rate of node unbalanced and can not prolong the lifetime of network effectively,therefore,a load balance-based single routing protocol for LLN(LB-RPL)was proposed.This protocol involved three strategies.The candidate parent was selected based on the con-sideration of the wireless link quality,the residual energy and the buffer occupancy rate of node.A variety of routing metrics was considered during the process of routing metric calculation to avoid the influence of the single routing metric on the network performance.The optimal parent was selected based on the cost of data transmission on the whole path.By the theoretical analysis and simulation results,LB-RPL can make the energy consumption of node balanced,prolong the network lifetime and improve the route reliability effectively compared with the existing single path routing protocols.

关 键 词：低功耗有损网络(LLN) 负载均衡 单路径 路由度量 传输代价 最优父节点 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]