低轨卫星系统中的一种带优先级的信道预留策略  

A Channel Reservation Algorithm with Priorities in LEO Satellite Systems

作　　者：李庆[1] 朱立东[1] 吴诗其[1] 

机构地区：[1]电子科技大学通信抗干扰技术国家级重点实验室,成都610054

出　　处：《电子与信息学报》2008年第8期1820-1823,共4页Journal of Electronics & Information Technology

摘　　要：在卫星通信系统中,可能需要同时支持地面普通终端及一些快速移动特殊终端的通信,因此需要综合考虑不同类型终端的通信服务质量要求。该文从切换的角度考虑,针对两种不同用户终端及非均匀的业务分布,提出一种带优先级的信道预留策略。通过理论分析和仿真结果表明,该策略提高了特殊用户的切换性能,对低轨卫星通信系统的研究有一定的参考价值。In satellite communication systems, some special users which are usually fast-moving terminals may need to be supported as well as the common users sometimes. Since the two types of users exist, the communication performances for both of them should be considered. In this paper, a novel channel reservation algorithm is proposed for this case. The theoretic analysis and simulation results show that the handover performances of the special users are improved by this algorithm.

关 键 词：卫星通信 低轨卫星系统 切换 优先级 信道预留 

分 类 号：TN927[电子电信—通信与信息系统]