空中骨干网络路由协议改进设计

Improvement of Route Protocol for Air Backbone Network

空中骨干网络由多个空中平台通过无线连接构成,并能够为各类中小型空中平台提供网络服务。空中骨干节点具有动态性,造成骨干网拓扑结构具有可变性,采用商用路由协议将会造成网络开销过大、无法维护正确的网络拓扑信息等问题。通过对空中骨干网络特点进行分析,在商用主动式路由算法的基础上进行跨层设计,并优化泛洪机制,实现了网络开销随着链路状态进行动态变化,利用较小的网络开销来维护准确网络拓扑结构。仿真结果表明,改进的路由协议基本满足空中骨干网的要求。

Air backbone network is composed of many air platforms which are connected by wireless communica- tion and can provide network service. The mobility of air platforms causes variability of network topology. If it uses commercial route protocol, route overhead will be large and network topology information can be wrong. Through analysing the characteristic of air backbone network, cross - layer design and flooding process optimiza- tion are performed based on commercial route protocol. Route overhead can change dynamically according to link state while maintaining correct network topology. Simulation result demonstrates that the improved route protocol meets the requirement of air backbone network.