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异质业务到达下共享服务器系统服务模式研究

DOI: 10.13190/j.jbupt.2013.06.016, PP. 74-78

Keywords: 长期演进,可变服务速率,服务器共享,机器对机器

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Abstract:

针对长期演进(LTE)的包交换和可变速率服务特点,将LTE网络对异质业务的服务过程抽象为可变速率服务器的包级排队系统,以研究异质业务共享服务器的方法.把异质业务粗略划分为人对人(H2H)、机器对机器(M2M)2类,根据网络技术和业务特性,分别用MMPP/M/1/KM+ARQ、M/M/1/KH两种队列模型建模网络对M2M、H2H两种业务到达服务.2类业务共享同一服务器,服务过程受H2H队长阈值控制,平均服务速率遵循指数或线性变化,总服务速率保持不变.构建3维马尔可夫模型,推导服务器共享系统状态的生成矩阵,求解3维马尔可夫链.仿真实验给出2种服务模式下的系统性能,同时展示了不同突发特性的M2M到达对系统性能的影响.

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