高服务质量两级复用算法研究  

Research on High Quality of Service Two-class Multiplexing Algorithm

作　　者：毕明雪[1,2] 潘成胜[3] 

机构地区：[1]沈阳理工大学装备工程学院,辽宁沈阳110159 [2]南京理工大学自动化学院,江苏南京210094 [3]大连大学,辽宁大连116622

出　　处：《兵工学报》2013年第12期1562-1568,共7页Acta Armamentarii

基　　金：国家自然科学基金项目(60802031;61101116)

摘　　要：针对空间数据系统特点和性能需求,对高级在轨系统(AOS)两级复用算法进行了研究。提出了根据包长和到达率等参数选取最优化包复用效率的时间,作为包信道复用时间上限的包信道复用算法,与根据数据实时性、帧长度、到达率自适应选择调度时隙长度和时隙数的虚拟信道(VC)复用算法,并分别从复用时延、复用效率、丢失率和吞吐量等方面进行了仿真。研究结果表明:新两级复用算法能够有效地限制处理时延,降低丢包率和丢帧率,提高复用效率和吞吐量,满足未来空间数据系统低时延和高吞吐量等服务质量(QoS)需求。The two-class multiplexing algorithm of advanced orbiting system （AOS）is researched for the characteristic and performance requirement of the space data system. Based on packet length and arrival rate, the packet channel multiplexing algorithm selects the upper limit of packet channel multiplexing time for optimization multiplexing efficiency adaptively. Based on real time character, frame length and data arrival rate, the virtual channel （VC） multiplexing algorithm distributes the scheduling time-slot lengths and numbers adaptively. Then the multiplexing delay, multiplexing efficiency, loss probability and throughput are simulated separately. The simulation results show that the new two-class multiplexing algorithm can restrict the time delay, reduce the probabilities of packet loss and frame loss, enhance the multiplexing efficiency and the throughput to satisfy the quality of service（QoS） requirement such as low time delay, the high throughput and so on for the future space data system.

关 键 词：航空 航天科学技术其他学科 空间数据系统 两级复用 POISSON过程 时延 吞吐量 

分 类 号：V19[航空宇航科学与技术—人机与环境工程] TN925[电子电信—通信与信息系统]