摘要
对于卫星链路参数在复杂空间环境中存在不确定性的问题,研究了一种基于不确定链路参数的卫星网络路由算法。首先,采用三角模糊数描述链路参数的不确定性;在此基础上,建立卫星网络多约束路由模型;然后,设计保证路径有效性的遗传操作,通过遗传算法对路由模型进行求解;最后,通过仿真分析表明,该算法可以在复杂环境中实现高效路由,在平均时延、时延抖动和丢包率等方面有较好的效果。
To solve the uncertainty problem of satellite link parameters caused by the complex aerospace environments, a routing strategy for satellite networks based on uncertain link parameters is researched. Firstly, the uncertain link parameters are represented by triangular fuzzy numbers. Secondly, the multi-constrained routing model for satellite networks is constructed based on uncertain link parameters. Thirdly, the routing model is solved by the genetic algorithm which is designed to ensure the path effectiveness. Finally, simulation results show that this strategy can achieve efficient routing in complex environments, and has good performance on average delay, delay jitter and packet loss rate.
作者
周剑
张胜东
王娟
韩崇
孙力娟
ZHOU Jian;ZHANG Shengdong;WANG Juan;HAN Chong;SUN Lijuan(College of Computer, Nanjing University of Posts and Telecommunications, Nanjing 210023, China;Jiangsu High Technology Research Key Laboratory for Wireless Sensor Networks, Nanjing 210023, China)
出处
《系统工程与电子技术》
EI
CSCD
北大核心
2019年第5期1143-1148,共6页
Systems Engineering and Electronics
基金
国家自然科学基金(91738201
61373139
61572261)
江苏省高校自然科学基金(17KJB520027)
南京邮电大学自然科学基金(NY218073)资助课题
关键词
路由算法
卫星网络
不确定性
链路参数
遗传算法
routing strategy
satellite networks
uncertainty
link parameters
genetic algorithm
