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中文摘要：
该文提出一种基于效用和信道资源借用的移动卫星系统呼叫接入控制算法（UBCB）,引入借用权重作为资源借用的依据来改善呼叫阻塞率和业务掉线率,通过调整业务接入的门限来改善卫星网络拥塞状况,从而提高星上资源利用率和卫星系统整体性能。仿真表明,该算法与一般的信道借用（CBS）算法相比,在服务等级、系统服务价值等方面得到较大改进。
英文摘要：
This paper proposes a Utility-Based and Channel-resource Borrowing（UBCB） call admission control strategy of mobile satellite system.In order to improve resource utilization probability and integrated performance of satellite system,the borrowing weight as the criterion of resource borrowing is introduced to improve call blocking and traffic dropping probability,and the threshold is adjusted for traffic admission—net utility to improve the congestion of the satellite system.Simulation results show that this strategy improves prominently in service grade and service value of satellite system compared to common Channel-Borrow Scheme（CBS）.
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