基于跨层设计的多子网OLSR路由协议  

Multi-subnet OLSR Routing Protocol based on Cross-layer Design

作　　者：郑重 郭强胜[1] 毛建兵[1] ZHENG Zhong;GUO Qiang-sheng;MAO Jian-bing(No. 30 Institute of CETC,Chengdu Sichuan 610041,China)

机构地区：[1]中国电子科技集团公司第三十研究所

出　　处：《通信技术》2019年第6期1405-1410,共6页Communications Technology

摘　　要：现代移动自组织网络规模越来越大给路由协议的设计带来了一定的挑战,尤其是在高动态的网络环境中。针对该问题,提出了一种新的基于跨层设计的多子网OLSR路由协议,该协议在OLSR协议的基础上提出了以下两点改进,即:采用网络层和链路层联合设计,利用链路层已有的控制时隙信息交互来实现邻居节点的快速发现和网关节点的选举;通过将大规模网络划分为多个子网,控制网络开销,实现复杂拓扑的简化,避免了局部网络的拓扑变化波及全网,提高了网络的机动性能。仿真结果表明:基于跨层设计的多子网OLSR协议与传统OLSR协议相比,不仅在初始建网时间、邻居节点发现时间、网络局部变化收敛时间等网络性能指标上有较大提升,还降低了网络平均路由开销。The increasing scale of modern mobile ad hoc networks poses certain challenges to the design of routing protocols,especially in highly dynamic network environments.Aiming at this problem,a new multisubnet OLSR routing protocol based on cross-layer design is proposed.Based on the OLSR protocol,the protocol proposes the following two modifications,that is,the network layer and the link layer are jointly designed,and the existing control slot information exchange at the link layer is used to implement fast discovery of neighbor nodes and election of gateway nodes;By dividing the large-scale network into multiple subnets,the network overhead is controlled,the complex topology simplified,and the local network topological changes affecting the whole network avoided,thus improving the mobility of the network.The simulation results indicate that compared with the traditional OLSR protocol,the multi-subnet OLSR protocol based on the cross-layer design could greatly improve the network performance indicators such as initial network construction time,neighbor node discovery time,network local change convergence time while reducing the average network routing overhead.

关 键 词：移动自组织网 路由协议 跨层设计 拓扑抽象 网关选举 性能分析 

分 类 号：TN9242[电子电信—通信与信息系统]