无人机自组网中基于能量权重的DSR协议  

DSR protocol based on energy weights in UAV Ad-Hoc network

作　　者：梁青 林天 张凡 LIANG Qing;LIN Tian;ZHANG Fan(School of Electronic Engineering,Xi an University of Posts and Telecommunications,Xi an 710121,China)

机构地区：[1]西安邮电大学电子工程学院,陕西西安710121

出　　处：《西安邮电大学学报》2021年第1期28-32,共5页Journal of Xi’an University of Posts and Telecommunications

基　　金：陕西省自然科学基金项目(2018GY-150)。

摘　　要：针对动态源路由(Dynamic Source Routing,DSR)协议在无人机飞行速度较快的情况下,网络拓扑剧烈变化所导致的链路易断裂以及数据传输效率较低等问题,提出一种基于能量权重的DSR协议(DSR-Energy Weights,DSR-EW)。在路由寻找过程中,通过计算传输损耗,得到传输链路的能量权重,进而获得整条传输路径的能量权重。从路径集合中选择能量权重高的传输路径进行通信,以剔除链路能量低的路径,避免链路因能量不足而丧失传输功能,并且维持较长的传输时间,以提升网络的传输性能。仿真结果表明,与DSR协议和基于连续Hopfield神经网络的DSR(Continuous Hopfield Neural Network-DSR,CHNN-DSR)协议相比,DSR-EW协议的丢包率、端到端时延和路由开销分别平均降低了33.3%、43.4%和33.2%,网络吞吐量平均提高了37.8%。A dynamic source routing(DSR)protocol based on energy weights(DSR-EW)is proposed to address the problems of link breakage and low data transmission efficiency caused by the drastic change of network topology under the fast flight speed of unmanned aerial vehicles.The DSR-EW protocol calculates the transmission loss to obtain the energy weight of the transmission link in the route-finding process,so as to obtain the energy weight of the entire transmission path,and to select the transmission path with high energy weight from the path set for communication.This method can eliminate the paths with low link energy,avoid the loss of transmission function due to insufficient energy and maintain a long transmission time,thus improve the transmission performance of the network.Simulation results show that compared with DSR protocol and DSR protocol based on continuous Hopfield neural network(CHNN-DSR)protocol,the packet loss rate,end-to-end delay and routing overhead of DSR-EW protocol are on average decreased by 33.3%,43.4%and 33.2%,and the network throughput is increased by 37.8%.

关 键 词：无人机自组网 DSR协议 DSR-EW协议 能量权重 传输性能 

分 类 号：TN929[电子电信—通信与信息系统]