卫星通信系统多优先级信道预留分配策略  

Channel allocation strategy for multi-priority terminals in satellite communication systems

作　　者：汤辉[1] 邹钦羊 朱立东 李婷[1] TANG Hui;ZOU Qinyang;ZHU Lidong;LI Ting(The 10th Research Institute,China Electronics Technology Group Corporation,Chengdu Sichuan 610036,China;National Key Laboratory of Science and Technology on Communication,University of Electronic Science and Technology of China,Chengdu Sichuan 611731,China)

机构地区：[1]中国电子科技集团公司第十研究所,四川成都610036 [2]电子科技大学通信抗干扰技术国家级重点实验室,四川成都611731

出　　处：《太赫兹科学与电子信息学报》2019年第5期765-770,共6页Journal of Terahertz Science and Electronic Information Technology

摘　　要：随着通信系统的不断发展,对融合地面系统的天地一体化网络的研究越来越多,而卫星通信系统中,由于卫星高速移动等特性,不可避免需要对呼叫的接入切换进行研究。针对天地一体化信息网络需要支持多场景多业务情况下的通信需求,考虑不同呼叫优先级不同,对多优先级的多种呼叫业务进行考虑。根据信道预留的思想,对不同优先级接入与切换呼叫设定不同的可用信道数,优先级越高的呼叫,为其留更多的可用信道以确保其接入信道成功。同时,由于动态信道预留较固定信道预留能够更好地利用信道资源,最终考虑多优先级下的动态信道预留策略。对多优先级动态信道预留与多优先级固定信道预留策略进行仿真验证,发现动态预留方案得到的系统服务质量更好。对于单一策略,发现优先级越高的用户接入与切换呼叫接入信道失败率更低。With the development of communication systems, the integration of terrestrial communication systems and satellite communication systems is put forward to provide better quality of communication services. When users are communicating by the satellite communication systems, consideri ng the characteristics such as high-speed of the satellite, the call access and switching problems are impossible to avoid, so it is necessary to study the technologies about access and handover to the terminals that are communicating depending on the satellite communication system. Because the world integration information network should be able to support the communication requirements of multiple scenarios and multiple services, it is important to distinguish different calls by their characteristics. Acc ording to their different types, multiple priorities are utilized to classify those calls and then channel allocation strategies are researched in this scenario. The dynamic channel reservation strategy is studied and simulated under the multi-priority.

关 键 词：低轨卫星通信系统 多优先级 信道资源分配 信道预留策略 

分 类 号：TN927[电子电信—通信与信息系统]