摘要
卫星网络动态拓扑被建模成在空间上延展、时间上连续的稳态图模型—时空连接图(Space⁃Time Connection Graph,STCG),且权重为数据在STCG的空间数据链路和虚拟时间链路的传输时延。通过对传统静态路由算法进行改进,使其可以应用到STCG中为卫星网络制定传输时延最短的路由;仿真结果表明,该路由策略可在多种不同条件下,如传输数据量、目的节点、卫星网络状态及仿真平台等,都可制定数据传输时延最低的路由,验证了所提路由策略的可行性。
The dynamic topology of satellite network is modeled as a space-time connection graph(STCG)which is extended in space and continuous in time.And the weight of STCG is the transmission delay when transmitting data in the spatial data link and virtual time link.By improving traditional static routing algorithm,it can be applied to STCG to formulate the route with the shortest transmission delay in satellite network.Simulation results show that this strategy can be used in a variety of conditions,such as the amount of transmitted data,destination nodes,satellite network status,simulation platform,etc.,to formulate the route with the lowest data transmission latency,which verifies the feasibility of the routing strategy proposed in this paper.
作者
朱琳
任智源
国晓博
张海林
ZHU Lin;REN Zhiyuan;GUO Xiaobo;ZHANG Hailin(Unit 63726,PLA,Yinchuan 750004,China;School of Telecommunication Engineering,Xidian University,Xi’an 710071,China;The 54th Research Institute of CETC,Shijiazhuang 050081,China)
出处
《无线电通信技术》
2021年第5期603-610,共8页
Radio Communications Technology
基金
中国电子科技集团公司第五十四研究所高校合作课题(99901200364)。
关键词
卫星网络
星间链路
传输时延
路由策略
satellite network
inter-satellite link
transmission latency
routing strategy
