低轨卫星通信中基于公平性的信道借用策略  

Fairness based channel borrowing strategy for multimedia LEO satellite communications

作　　者：黄飞[1] 许辉[1] 吴诗其[1] 

机构地区：[1]电子科技大学通信抗干扰技术国防重点实验室,四川成都6100054

出　　处：《通信学报》2006年第8期10-17,共8页Journal on Communications

基　　金：国家自然科学基金资助项目(60496313)~~

摘　　要：首先建立了LEO卫星移动模型和用户多媒体业务量模型,然后通过计算机仿真,分析了各种信道分配策略在LEO卫星多媒体通信中的性能,提出了信道借用切换策略(CBS),仿真结果表明其能很好地满足LEO卫星多媒体业务的服务质量(QoS),同时也提高了系统的信道利用率,最后讨论了3种不同信道借用策略的公平性和系统性能。A LEO satellite mobility model and user multimedia traffic model was built firstly, then a novel channel borrowing strategy （CBS） was proposed and its performance was evaluated and compared with several existing channel allocation schemes through computer simulation. Simulation results show this scheme can satisfy the QoS requirement of LEO satellite multimedia service very well, at the same time, keeping resource utilization high, finally discussed the fairness and system performance under three different channel borrowing strategies.

关 键 词：卫星多媒体通信:服务质量 公平性指数:信道借用切换策略 

分 类 号：TN927[电子电信—通信与信息系统]