摘要
延迟容忍网络中基于位置的地理路由算法使用节点自我采集的GPS信息进行下一跳中继结点的选择,而节点的移动性会导致节点的实际位置在时刻改变,相对位置节点的移动方向信息比地理位置信息具有更好的稳定性。文献[1]提出的MDCE路由算法网络负载率和丢包率很高,且由于DTN网络的特殊性,难以拥有多个相邻节点。对MDCE路由算法进行分析与改进,降低中继节点数、规避消息副本向来的方向传输。仿真结果表明,改进后的MDCE路由算法的网络负载率和丢包率明显降低,实用性更强。
The location-based geographic routing algorithm in DTN uses the GPS information collected by the node to select the next hop relay node,and the mobility of the node will cause the actual location of the node to change at any time.Compared with the location,the mobile direction information of the node is more stable than the geographical location information.Xu jixing et al.[1]proposed MDCE routing algorithm,but MDCE routing algorithm has a high network load rate and packet loss rate.Because of the particularity of DTN,it is difficult to have multiple adjacent nodes.This paper analyzes and improves the MDCE routing algorithm,reduces the number of relay nodes,and avoids the direction of message copy transmission.The simulation results show that the network load rate and packet loss rate of the improved MDCE routing algorithm are significantly reduced,and the practicability is stronger.
作者
杨万鑫
汪学明
夏红红
Yang Wanxin;Wang Xueming;Xia Honghong(School of Computer Science and Technology,Guizhou University,Guiyang 550025,Guizhou,China;School of Science,Kaili College,Kaili 556011,Guizhou,China)
出处
《计算机应用与软件》
北大核心
2021年第1期105-110,共6页
Computer Applications and Software
基金
贵州省教育厅自然科学研究项目(黔教合KY字[2020]192号)
黔东南州科技计划项目(黔东南科合J字[2017]006号)。
