摘要
针对无人机高速运动导致通信链路易断开的问题,提出最大跳距的概念并据此设计了下一跳候选区域,以增加最佳下一跳的可选范围;考虑到高动态网络中GPSR信标交换不及时引起的位置信息失效提出了移动性预测机制,通过对邻居节点实时的位置预测,使得建立的通信链路更加稳健.为解决GPSR协议周边转发在三维空间不适用的问题,引入按需路由DSR泛洪寻找路由的思想,可以以最小跳数恢复贪婪转发.仿真结果表明和PSPFP路由协议相比,不同移动速度下的CA-GPSR协议在端到端时延、分组投递率和网络吞吐量等方面的性能都有不同程度的提升.
Aiming at the problem that the communication link was easily disconnected due to the high-speed movement of the UAV,the concept of the maximum hop distance was firstly proposed and the next hop candidate area was designed accordingly to increase the optional range of the optimal next hop.Considering the high dynamic the mobility prediction mechanism was proposed for the failure of location information caused by the untimely exchange of GPSR beacons in the network.Through the real-time location prediction of neighbor nodes,the established communication link was more robust.In order to solve the problem that GPSR protocol peripheral forwarding was not applicable in three-dimensional space,the idea of on-demand routing DSR flooding was introduced to find routes,which could restore greedy forwarding with the minimum number of hops.The simulation results showed that compared with the PSPFP routing protocol,the performance of the CA-GPSR protocol under different moving speeds in terms of end-to-end delay,packet delivery rate and network throughput had been improved to varying degrees.
作者
卢成杰
LU Cheng-jie(School of Information and Communication Engineering,Harbin Engineering University,Harbin 150001,China)
出处
《哈尔滨商业大学学报（自然科学版）》
CAS
2022年第6期692-698,共7页
Journal of Harbin University of Commerce：Natural Sciences Edition
