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Service-Driven Coded Forward Scheme Based on Streaming Transmission Model for Lunar Space Communication Networks 被引量:1

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摘要 With the rapid development of lunar exploration,a large amount of scientific data and media stream service needs to be transmitted through Lunar Space Communication Networks(LSCNs).Due to limited transmitter power and intermittent,long delay and packet loss connections,the reliable and efficient multi-priority services’transmission in LSCNs becomes an urgent problem.Firstly,we propose a Streaming Transmission Model(STM)based on temporal and spatial topology graph to describe the delay and energy consumption for data transmission in LSCNs.Then,we further devise a Coded Forward Scheme based on STM,termed CFS-STM,to achieve multi-priority service in two steps:i).Link Stability Function(LSF)is established by solving an optimization problem to choose the appropriate single-hop path.ii).Raptor code is employed to further save delay and energy with adjustable code-rate according to the different channel conditions.Experiment results show that,CFS-STM can significantly improve the transmission efficiency of multi-service priority streaming delivery in LSCNs.
出处 《China Communications》 SCIE CSCD 2020年第7期15-26,共12页 中国通信(英文版)
基金 supported by the National Natural Sciences Foundation of China under Grant 61701136,Grant 61831008,and Grant 61525103 Guangdong Science and Technology Planning Project Grant 2018B030322004 the project“Verification Platform of Multi-tier Coverage Communication Network for Oceans(LZC0020)”。
关键词 STREAMING service DELAY
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