通信学报2024，Vol.45Issue(7)：70-83,14.DOI:10.11959/j.issn.1000-436x.2024127
基于信道建模的多层星地融合数据分配策略
Channel model-based multiple layers satellite-ground integrated data allocation strategy
摘要
Abstract
To address the problem of inefficient satellite-ground link handover,unbalanced data allocation,and high prob-ability of data transmission interruptions in space-air-ground integrated networks,a channel model-based multiple layers satellite-ground integrated data allocation strategy(CMDAS)was proposed for the satellite-ground integrated data trans-mission scenario with a multi-layer architecture.Considered various factors,e.g.,the satellite-ground distance,free space path loss,channel gain,and remaining service time,a service capacity quantification model of low earth orbit satellites based on the Shannon's capacity theory was constructed,thus generating data allocation strategies.Considered the risk of data transmission interruptions with historical interaction information and dynamically adjusted data allocation strate-gies based on a reliability acknowledgement mechanism,the efficiency of data transmission was improved and satellite-ground link seamless handover with interruption avoidance was realized.The simulation results show that the perfor-mances of the proposed strategy outperform other baseline algorithms in terms of delivery ratio,average delivery latency,and interruption ratio.关键词
空天地一体化网络/数据分配策略/信道建模/无缝切换Key words
space-air-ground integrated network/data allocation strategy/channel model/seamless handover分类
信息技术与安全科学引用本文复制引用
宋宇杰,曹越,陈诺,孙智立..基于信道建模的多层星地融合数据分配策略[J].通信学报,2024,45(7):70-83,14.基金项目
国家重点研发计划基金资助项目(No.2022YFE0139300) （No.2022YFE0139300）
广东省基础与应用基础研究基金资助项目(No.2022B1515120067) The National Key Research and Development Program of China(No.2022YFE0139300),Guangdong Provincial Basic and Applied Basic Research Foundation(No.2022B1515120067) （No.2022B1515120067）
