面向机动侦察的动态流量比例SDN多路径传输  

DYNAMIC TRAFFIC RATIO SDN-BASED MULTI-PATH TRANSMISSION FOR MOBILE RECONNAISSANCE

作　　者：张耕强 谢钧 杨章林 Zhang Gengqiang;Xie Jun;Yang Zhanglin(College of Command&Control Engineering,Army Engineering University of PLA,Nanjing 210007,Jiangsu,China)

机构地区：[1]中国人民解放军陆军工程大学指挥控制工程学院,江苏南京210007

出　　处：《计算机应用与软件》2024年第11期174-180,233,共8页Computer Applications and Software

基　　金：国家自然科学基金项目(61971439)。

摘　　要：SDN(Software Defined Network)能实现高质量的QoS(Quality of Service)路由,但由于转发节点需要控制器下发流表进行转发,在机动网络里对路径失效问题的及时应对能力不强,易产生吞吐量骤降现象,影响侦察视频质量。对此,提出一种动态调整各路径流量比例的SDN多路径传输方法。控制器会在每次主动更新网络视图后,按节点位置和链路带宽预先调整各路径下一时间段内的流量比例,提前减少易失效路径的传输数据量。仿真结果表明,相较于在链路失效后再调整路径的SDN多路径传输,该方法提升了吞吐量并增强了传输稳定性。SDN can achieve high-quality QoS routing,but the forwarding nodes need the controller to issue flow tables for forwarding,its ability to respond to path failure problems in a mobile network is not strong,which is easy to cause a sharp drop in throughput,affecting the quality of surveillance video.In this regard,an SDN multi-path transmission method that dynamically adjusts the traffic ratio of each path is proposed.Each time the controller actively updated the network view,it pre-adjusted the traffic ratio of each path in the next time period according to the node location and link bandwidth,so as to reduce the amount of data transmitted by the vulnerable path in advance.The simulation results show that compared with SDN multipath transmission that adjusts the path after the link fails,this method improves the throughput and enhances the transmission stability.

关 键 词：战场机动侦察 视频传输 软件定义网络 多路径传输 稳定传输 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]