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Building an Energy-efficient Uplink and Downlink Delay Aware TDM-PON System

机译：构建节能的上行链路和下行链路延迟感知TDM-PON系统

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摘要

With the increasing concern over the energy expenditure due to rapid ICT expansion and growth of Internet traffic volume, there is a growing trend towards developing energy-efficient ICT solutions. Passive Optical Network (PON), which is regarded as a key enabler to facilitate high speed broadband connection to individual subscribers, is considered as one of the energy-efficient access network technologies. However, an immense amount of research effort can be noticed in academia and industries to make PON more energy-efficient. In this paper, we aim at improving energy saving performance of Time Division Multiplexing (TDM)-PON, which is the most widely deployed PON technology throughout the world. A commonly used approach to make TDM-PON energy-efficient is to use sleep mode in Optical Network Units (ONUs), which are the customer premises equipment of a TDM-PON system. However, there is a strong trade-off relationship between traffic delay performance of an ONU and its energy saving (the longer the sleep interval length of an ONU, the lower its energy consumption, but the higher the traffic delay, and vice versa). In this paper, we propose an Energy-efficient Uplink and Downlink Delay Aware (EUDDA) scheme for TDM-PON system. The prime object of EUDDA is to meet both downlink and uplink traffic delay requirement while maximizing energy saving performance of ONUs as much as possible. In EUDDA, traffic delay requirement is given more priority over energy saving. Even so, it still can improve energy saving of ONUs noticeably. We evaluate performance of EUDDA in front of two existing solutions in terms of traffic delay, jitter, and ONU energy consumption. The performance results show that EUDDA significantly outperforms the other existing solutions. (C) 2016 Elsevier Inc. All rights reserved.
机译：随着信息通信技术的迅速发展和互联网流量的增长，人们对能源支出的关注日益增加，开发节能型信息通信技术解决方案的趋势正在日益增长。无源光网络（PON）被认为是促进到各个用户的高速宽带连接的关键推动因素，被认为是一种节能的接入网络技术。然而，在学术界和工业界可以注意到大量的研究工作使PON更加节能。在本文中，我们旨在提高时分复用（TDM）-PON的节能性能，该技术是全球部署最广泛的PON技术。使TDM-PON节能的一种常用方法是在光网络单元（ONU）中使用睡眠模式，这些单元是TDM-PON系统的用户设备。但是，ONU的流量延迟性能与其节能之间存在很强的权衡关系（ONU的睡眠间隔长度越长，其能耗越低，但是流量延迟就越大，反之亦然）。在本文中，我们提出了一种用于TDM-PON系统的节能上行链路和下行链路延迟感知（EUDDA）方案。 EUDDA的主要目的是要满足下行链路和上行链路流量延迟要求，同时尽可能地最大化ONU的节能性能。在EUDDA中，对交通延迟的要求比节能的优先级更高。即使这样，它仍然可以显着提高ONU的节能性。在流量延迟，抖动和ONU能耗方面，我们在两种现有解决方案之前评估EUDDA的性能。性能结果表明，EUDDA明显优于其他现有解决方案。 （C）2016 Elsevier Inc.保留所有权利。

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