基于网络编码的卫星网络容量提升方法  

Satellite Network Capacity Enhancement Method Based on Network Coding

作　　者：王瑞松 钟志聪 刘功亮[1] 马若飞[1] WANG Ruisong;ZHONG Zhicong;LIU Gongliang;MA Ruofei(School of Information Science and Engineering,Harbin Institute of Technology Weihai 264209,China)

机构地区：[1]哈尔滨工业大学,山东威海264209

出　　处：《移动通信》2021年第5期1-7,21,共8页Mobile Communications

基　　金：国家自然科学基金(61971156,61801144);山东省自然科学基金(ZR2019MF035,ZR2019QF003);哈尔滨工业大学科研创新基金(HIT.NSRIF.2019081)

摘　　要：卫星网络容量的分析与提升一直是一个备受关注的问题,因此,研究了基于网络编码的卫星网络容量提升方法。首先,采用时间扩展图的方法对动态卫星网络进行抽象,其次,针对网络编码与非网络编码两种情形,分别提出了对应的数学问题,再次,对于网络编码的情形,将其容量优化问题分解为多个单源单目的最大流问题,对于非网络编码的情形,约束的耦合性是难以解决的,因此利用二分法来得到最优的网络容量。最后,仿真结果表明网络编码对卫星网络容量的提升是非常明显的。The analysis and enhancement of satellite network capacity has always been a key issue, and thus this paper studies the satellite network enhancement method based on network coding. Firstly, the time expanded graph is used to abstract the dynamic satellite network. Secondly, for two cases of network coding and non-network coding, the corresponding mathematical problems are proposed. Thirdly, for the network coding case, the capacity optimization problem is decomposed into multiple maximum flow problems with single-source and single-destination. For non-network coding case, the coupling of constraints is difficult to solve and the bisection method is adopted to get the optimal network capacity. Finally, the simulation results show that the network coding can significantly improve the capacity of satellite network.

关 键 词：卫星网络 网络编码 容量提升 二分法 

分 类 号：TN927[电子电信—通信与信息系统]