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基于SMDP的异构无线网络联合接纳控制策略研究

Keywords: 异构无线网络,接纳控制,半马尔科夫决策过程

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Abstract:

为了异构无线网络中不同无线技术的融合协同工作可以为终端接入提供随时随地的高质量的网络服务,联合呼叫接纳控制机制是适用于异构无线网络的判决呼叫准入的机制.提出一种优化的联合呼叫接纳控制机制用于异构无线网络,将新的呼叫和切换呼叫作为触发接纳控制的事件,对影响服务质量的参数和接纳控制开销进行网络效用建模分析,使用改进的值迭代算法来降低计算复杂度,将阈值函数分成多个域,来获得最优决策策略.提出的联合接入控制策略可提供优化服务质量保证,节约整个网络的能耗成本,并且有效降低呼叫阻塞率和切换掉线率.实验结果表明:算法具有较高的求解有效性,而且求解速度快,具有较高的推广应用价值.

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