Optimal Control of Wake Up Mechanisms of Femtocells in Heterogeneous Networks
Optimal Control of Wake Up Mechanisms of Femtocells in Heterogeneous Networks
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DOI：
10.1109/jsac.2012.120415
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发表时间：
2012-03
影响因子：
16.4
通讯作者：
L. Saker;Salah-Eddine Elayoubi;Richard Combes;T. Chahed
中科院分区：
文献类型：
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作者：
L. Saker;Salah-Eddine Elayoubi;Richard Combes;T. Chahed
我们研究，在这项工作中，最佳的睡眠/唤醒方案的基站的网络运营的毫微微小区内部署的宏小区的目的，卸载其流量的一部分。我们的目标是最大限度地减少整个异构网络的能源消耗，同时保持用户体验的服务质量（QoS）。我们这样一个系统的模型在流的水平，考虑到一个动态的用户配置，并得出，使用马尔可夫决策过程（MDP），最佳的睡眠/唤醒方案的基础上的信息流量负载和用户定位在小区中，在这种情况下，该信息是完整的，部分或延迟。我们的研究结果量化的能源消耗和QoS感知的用户在这些情况下，并确定这两个数量之间的权衡。我们还数值说明了在不同的交通情况下的最优策略。
We study, in this work, optimal sleep/wake up schemes for the base stations of network-operated femto cells deployed within macro cells for the purpose of offloading part of its traffic. Our aim is to minimize the energy consumption of the overall heterogeneous network while preserving the Quality of Service (QoS) experienced by users. We model such a system at the flow level, considering a dynamic user configuration, and derive, using Markov Decision Processes (MDPs), optimal sleep/wake up schemes based on the information on traffic load and user localization in the cell, in the cases where this information is complete, partial or delayed. Our results quantify the energy consumption and QoS perceived by the users in each of these cases and identify the tradeoffs between those two quantities. We also illustrate numerically the optimal policies in different traffic scenarios.