一种两跳自适应信标航空贪婪周边无状态路由(GPSR)协议

An advanced GPSR routing protocol based on two hops and adaptive beacon mechanism for aeronautical use

结合民用航空环境和自由飞行应用背景,针对贪婪周边无状态路由(greedy perimeter stateless routing,GPSR)固定的信标周期无法适应高度动态的移动自组网,邻居表维护准确度和控制开销无法自适应调节的问题,提出了一种基于两跳自适应信标交换算法的GPSR改进协议GPSR-TA(GPSR-two hops adaptive beacon)。NS2的仿真结果表明,在二维场景下,使用改进邻居发现机制的GPSR-TA能使节点自适应地感知周围邻居的分布,并在保证邻居发现精度的前提下自适应调整控制开销,较GPSR更适用于高动态民用航空环境。

Free flight concept could have been fulfilled combined with an Ad hoc networking form named free flight aero- nautical data network （FFADN） in civil aviation, whose environment is appropriate for the implemention of greedy perimeter stateless routing （GPSR） as routing protocol. Countering the fact that fixed beacon interval that GPSR uses as notifying mecanism for neighbor table maintenance couldn＇ t meet the need for highly dynamic MANET, and the accuracy of neighbor table is not adaptively adjustable with overhead, an advanced GPSR-TA protocol based on two hops adaptive beacon ex- change mechanism is raised. The simulation results in NS2 demonstrated that GPSR-TA could solve the problems above and is capable for civil aviation use with a better neighbor discovery mechanism.