摘要
针对卫星网络中业务需求因时间空间分布不均导致的网络拥塞,以及高误码率导致的数据损坏,提出了一种面向LEO/GEO卫星网络的多路径多业务路由策略。该策略将时空因子引入链路代价公式,并综合考虑链路状态、多路径标志位、业务对时延敏感性和用户等级,进行传输路径的选择。仿真结果表明,该策略具有较好的性能,整个卫星网络的平均丢包率下降,吞吐量上升,保证了高优先级数据包的优先传输,提高了数据传输的可靠性。
The uneven distribution of network demand over time and space causes the congestion and the data damage due to high error rates, a multi-path and multi-service routing strategy for LEO/GEO satellite networks is explored. In the strategy, the space-time factor is introduced into the link cost formula, and the transmission path is selected by considering the link state, multi-path flag, the sensitivity of the traffic to the delay and the user level. The simulation results show that the routing strategy has better performance. The average packet loss rate of the whole satellite network is decreased, and the throughput is increased. Thus, the strategy ensures the transmission of high priority packets and improves the reliability of data transmission.
出处
《南京邮电大学学报（自然科学版）》
北大核心
2017年第6期36-43,共8页
Journal of Nanjing University of Posts and Telecommunications：Natural Science Edition
基金
国家自然科学基金(61572261
61373139)
江苏省自然科学基金(BK20150868)
中国博士后科学基金(2014M551635
2014M551637)
江苏省博士后基金(1302085B
1401046C)
江苏省研究生科研创新计划(KYCX17_0782)资助项目
关键词
双层卫星网络
路由策略
负载均衡
多路径
多业务
two-layered satellite networks
routing strategy
load balancing
multi-path
multi-service
