计算机工程

• •    

基于链路生存时间预测的高动态FANETs组播路由协议

  

  • 发布日期:2020-12-15

A Multicast Routing Protocol based on Link-Lifetime Prediction for High Dynamic FANETs

  • Published:2020-12-15

摘要: 针对飞行自组网(Flying Ad-hoc Networks, FANETs)中节点高速移动导致链路频繁断开的问题,提出一种具备链路 生存时间预测与路由自主修复能力的高动态 FANETs 组播路由协议。该协议的设计思想是:在路由建立阶段,先根据相邻节 点间距离的变化情况预测邻居节点间剩余链路生存时间(匀速直线运动情况),再基于预测结果并结合路由跳数、剩余能量等 因素对链路质量作出综合评价,选出最佳中继节点以提高路由的可靠性;在数据传输阶段,通过局部路由修复与全局路由刷 新相结合的策略对所建立路由进行动态维护,缓解节点高速移动引起的链路频繁断开的问题,提高数据递交率。仿真结果表 明,在不同场景下,所提协议在数据递交率、网络吞吐量与路由开销方面等方面的性能均优于经典组播路由协议 ODMRP。

Abstract: In order to solve the problem of frequent link disconnection caused by high-speed movement of nodes in Flying Ad-Hoc Networks (FANETs), a multicast routing protocol with link lifetime prediction and routing autonomous repair for high dynamic FANETs is proposed. The design idea of the protocol is as follows: in the routing establishment stage, the residual link survival time between neighboring nodes according to the change of distance between neighboring nodes is predicted(considering nodes moving in a straight line with uniform velocity), and then the routing quality according to the predicted results combined with the number of routing hops and residual energy is evaluated, and the best relay node is selected to ensure the reliability of the established route; in the process of data transmission, the established routes are maintained by combining local routing repair with global route refresh to counter frequent link disconnection caused by high-speed movement of nodes. Simulation results show that the proposed protocol is superior to the classical multicast routing protocol ODMRP in terms of data delivery rate, network throughput and routing overhead under different scenarios.