【摘要】 提出了一种基于低轨/中轨/高轨(LEO/MEO/GEO)卫星网络体系结构(TLSN)和时空分割思想的QoS路由协议(TDRP),详细阐述了时空分割思想和时隙优化方法,重点研究了QoS路由的实现框架和路由算法(BDA)的实现原理.在此基础上,卫星网络体系结构和路由协议的性能得到了详细分析和仿真验证.相同负载情况下,TLSN中端到端时延和时延抖动性能明显好于LEO卫星网络;同Dijkstra算法相比,BDA算法在端到端时延、时延抖动、丢包率、吞吐量方面具有更好的QoS保证能力.更多还原

【Abstract】 A novel onboard QoS routing protocol(TDRP) is developed in this paper,based on a three layered satellite network architecture(TLSN) which consists of low Earth orbit(LEO),medium Earth orbit(MEO),and geostationary Earth orbit(GEO) satellites,and the idea of time-space division.The method of time-slot optimization and the idea of time-space division are expatiated.The framework of QoS routing gains emphatically research.In addition,the implementation principle of the routing algorithm(BDA) is also discussed.The performance of the proposed satellite network architecture and QoS routing protocol is evaluated efficiently through simulations and analysis.On condition of the same network load,TLSN perform better than LEO satellite networks in end-to-end delays and delay jitters;BDA can provide more QoS guarantees than Dijkstra algorithm in end-to-end delays, delay jitters,package loss probability and throughput.更多还原