面向无人机网络快速路由恢复的改进OLSR协议  

An Improved OLSR Protocol for Fast Routing Recovery in UAV Networks

作　　者：刘青昕 朱小军[2] 董超 刘世超 LIU Qingxin;ZHU Xiaojun;DONG Chao;LIU Shichao(College of Electronic and Information Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 211106,China;College of Computer Science and Technology,Nanjing University of Aeronautics and Astronautics,Nanjing 211106,China)

机构地区：[1]南京航空航天大学电子信息工程学院,江苏南京211106 [2]南京航空航天大学计算机科学与技术学院,江苏南京211106

出　　处：《无线电通信技术》2022年第6期989-997,共9页Radio Communications Technology

基　　金：国家自然科学基金(61931011,61972199)。

摘　　要：针对无人机网络中由节点和链路故障引起的频繁路由失效问题,提出了路由恢复时间指标以衡量网络对故障反应的快慢,并给出了相应的测量方法。在OLSR的基础上,提出了一种改进路由协议(Fast Recovery OLSR,FR-OLSR),通过检测HELLO消息中的邻居条目以及时发现节点或链路的突然断开,加快网络的路由恢复。在商用仿真平台EXata进行了实现,仿真结果表明,相较于OLSR,FR-OLSR在增加不超过15%控制开销的情况下,可以将路由恢复时间缩短50%。Targeting at the problem of frequent routing failures caused by node and link failures in UAV networks,we propose a metric of route recovery time to characterize how fast the networks response to failures,and give a corresponding measurement strategy.Based on OLSR,we propose an improved routing protocol,FR-OLSR(Fast Recovery OLSR),which reacts to sudden disconnection of nodes or links by detecting neighbor entries in HELLO messages,speeding up network route recovery.We implement it on commercial simulation platform EXata.Simulation results show that,compared with OLSR,FR-OLSR can reduce the route recovery time by 50%at the cost of less than 15%additional control overhead.

关 键 词：无人机网络 OLSR路由协议 路由恢复 

分 类 号：TN929.5[电子电信—通信与信息系统]