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首页> 外文期刊>International Journal of Innovative Computing Information and Control >AN ENHANCED ENERGY SAVING STRATEGY FOR AN ACTIVE DRX IN LTE WIRELESS NETWORKS
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AN ENHANCED ENERGY SAVING STRATEGY FOR AN ACTIVE DRX IN LTE WIRELESS NETWORKS

机译：LTE无线网络中活动DRX的增强型节能策略

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摘要

When using a Discontinuous Reception (DRX) mechanism in Long Term Evolution (LTE) for wireless communication of high-speed data, two different operational modes are employed: Idle DRX and Active DRX. In this paper, in order to guarantee a low latency while reducing the energy consumption, we introduce a sleep-delay timer before the system enters into a sleep state from a working state, and consider a strategy to enhance energy saving for the Active DRX where the system switches to a sleep state from a working state. We call the time length of the sleep-delay timer a sleep-delay period and the switching period a waking-up procedure. We build a discrete-time queueing model with two stages of vacations by taking into account the sleep-delay period and the waking-up procedure to model the system, operation. By using an embedded Markov chain, we present an exact analysis to numerically evaluate the performance of the system model. We then give the formulas for the performance measures in terms of handover ratio, energy consumption and average latency of the data frames, and present numerical experiments to investigate the influence of the configuration parameters on the system performance. Finally, by considering the trade-off between different performance measures, we optimize the enhanced energy saving strategy for the Active DRX.
机译：当在长期演进（LTE）中使用不连续接收（DRX）机制进行高速数据无线通信时，将采用两种不同的操作模式：空闲DRX和主动DRX。在本文中，为了确保低延迟同时减少能耗，我们在系统从工作状态进入睡眠状态之前引入了一个睡眠延迟计时器，并考虑了一种策略来增强Active DRX的节能效果：系统从工作状态切换到睡眠状态。我们将睡眠延迟计时器的时间长度称为睡眠延迟时间，将切换时间称为唤醒过程。我们通过考虑睡眠延迟时间和唤醒程序来对系统，操作进行建模，从而建立了一个具有两个休假阶段的离散时间排队模型。通过使用嵌入式马尔可夫链，我们提出了一种精确的分析方法，以数值方式评估系统模型的性能。然后，我们根据切换率，能耗和数据帧的平均等待时间给出性能度量的公式，并提供数值实验来研究配置参数对系统性能的影响。最后，通过考虑不同性能指标之间的权衡，我们优化了有源DRX的增强型节能策略。

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