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Delay-aware adaptive sleep mechanism for green wireless-optical broadband access networks

机译:用于绿色无线宽带接入网络的时延感知自适应睡眠机制

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Wireless-Optical Broadband Access Network (WOBAN) is capacity-high, reliable, flexible, and ubiquitous, as it takes full advantage of the merits from both optical communication and wireless communication technologies. Similar to other access networks, the high energy consumption poses a great challenge for building up WOBANs. To shot this problem, we can make some load-light Optical Network Units (ONUs) sleep to reduce the energy consumption. Such operation, however, causes the increased packet delay. Jointly considering the energy consumption and transmission delay, we propose a delay-aware adaptive sleep mechanism. Specifically, we develop a new analytical method to evaluate the transmission delay and queuing delay over the optical part, instead of adopting M/M/1 queuing model. Meanwhile, we also analyze the access delay and queuing delay of the wireless part. Based on such developed delay models, we mathematically derive ONU's optimal sleep time. In addition, we provide numerous simulation results to show the effectiveness of the proposed mechanism. (C) 2017 Elsevier Inc. All rights reserved.
机译:无线光学宽带接入网(WOBAN)具有高容量,可靠,灵活且无处不在的特点,因为它充分利用了光通信和无线通信技术的优点。与其他接入网络类似,高能耗对建立WOBAN构成了巨大挑战。为了解决这个问题,我们可以使一些轻载光网络单元(ONU)进入睡眠状态以减少能耗。然而,这种操作导致增加的分组延迟。结合能量消耗和传输延迟,我们提出了一种延迟感知的自适应睡眠机制。具体来说,我们开发了一种新的分析方法来评估光学部件上的传输延迟和排队延迟,而不是采用M / M / 1排队模型。同时,我们还分析了无线部分的访问延迟和排队延迟。基于这样开发的延迟模型,我们可以从数学上推导ONU的最佳睡眠时间。此外,我们提供了大量的仿真结果来证明所提出机制的有效性。 (C)2017 Elsevier Inc.保留所有权利。

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