Resarch And Application Of Routing Protocol For Flying Ad Hoc Network

In recent years,UAVs has widely applied.Scenarios consisting of multiple UAVs to provide extended communications for ground emergency nodes are widely studied.In this paper,we improve the GPSR routing protocol under the new network architecture Software Defined Network SDN(Software Defined Network,SDN)architecture,and proposes a load-balanced routing algorithm I-GPSR(Improved GPSR)based on the SDN architecture which can provide reliable,low-latency,long-running transmission of packets between UAVs.First of all,the Flying Ad-Hoc network is a special vehicle Ad-Hoc network,which is different from the traditional VANETs.It has the following characteristics: fast moving speed,flying in three-dimensional space,limited running time and angle.Based on these characteristics,a three-dimensional smooth moving model of UAV group is proposed,which can mimic the moving process of UAV to the greatest extent,and it is proved that in the simulation experiment of the FANETs,only assuming the UAV in the two-dimensional plane will lead to wrong experimental results.It is verified that the traditional ad hoc routing protocol is no longer available for the UAV nodes in FANETs environment.Secondly,a load balancing routing algorithm based on the SDN architecture was proposed to cope with the energy constraints of UAVs,the strong coupling between the data plane and the control plane,and the network's non-programmability under the traditional network architecture.This algorithm has the following advantages: first,it saves the energy consumption caused by the routing calculation of the UAV;second,it saves the energy consumption caused by the communication;third,it increases the packet delivery ratio and improves reliability of packet transmission between UAV nodes.Finally,we simulated the two mobility models proposed in this paper,and compared with the traditional mobility model,the proposed mobility models can mimic the movement of UAV more realistically.A large number of simulation experiments are performed on the proposed IGPSR routing algorithm.Compared with the traditional GPSR routing algorithm,the I-GPSR routing algorithm improves the operation time and packet delivery ratio,however,the End-toEnd delay increase marginally.