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首页> 外文期刊>Journal of network and computer applications >Power-saving mechanisms for energy efficient IEEE 802.16e/m
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Power-saving mechanisms for energy efficient IEEE 802.16e/m

机译：节能机制，实现高能效IEEE 802.16e / m

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Efforts to reduce CO_2 emission regarded as a main reason of the green house effect are widely performed in Information and Communications Technology (1CT) industry. In particular, as fast growing mobile communications services consume more energy, there are wide efforts to increase energy efficiency in the area of Mobile Station (MS), radio Base Stations (BS), network controllers, and core networks. User's concern, however, is more focused on optimization of energy efficiency in MS with limited battery capacity, because MS consumes much energy for wide broadband data services in data-centric communications services with 4G technology rather than legacy voice-centric communications services. The key idea of power saving mechanism (PSM) in MS is to operate sleep-mode that the MS turns down main elements when there is no data to receive/transmit in order to save battery power. With legacy voice-centric communication services, traffic pattern is rather simple and well-known so that the sleep-mode of PSM is well operated. However, in 4G technology for various data-centric services power saving mechanism should be adaptive to changing traffic condition in order to achieve optimal energy efficiency. Thus, holistic perspective for power saving techniques is needed in consideration of characteristics of services and QpS constraints, multiple applications support, remained battery power, handover process. Multicast Broadcast Service (MBS) support, and so on. This paper surveys various power saving mechanisms proposed for IEEE 802.16e/m. We first present the basic operating mechanism of PSM and research issues for performance enhancement. Based on their limitations and potentials, we then review several proposals of PSM for IEEE 802.16m, an evolutional technology of IEEE 802.16e. It will be interesting for readers to observe that once PSM was standardized in IEEE 802.16e, many new ideas have been proposed to improve the performance of the original PSM, and some of them are survived and adopted to new standard technique in the advanced IEEE 802.16m.
机译：在信息和通信技术（1CT）行业中，人们广泛开展了减少CO_2排放的努力，而这被认为是造成温室效应的主要原因。特别地，随着快速增长的移动通信服务消耗更多的能量，人们在提高移动站（MS），无线电基站（BS），网络控制器和核心网络领域的能效方面进行了广泛的努力。但是，用户的关注点更多地集中在电池容量有限的MS的能源效率优化上，因为在4G技术而非传统的以语音为中心的通信服务中，MS为宽带数据服务在宽带数据服务中消耗大量能量。 MS中的省电机制（PSM）的关键思想是操作睡眠模式，当没有数据可接收/发送时，MS会关闭主要元件，以节省电池电量。使用传统的以语音为中心的通信服务，流量模式相当简单且众所周知，因此PSM的睡眠模式可以很好地运行。但是，在用于各种以数据为中心的4G技术中，节电机制应适应不断变化的交通状况，以实现最佳的能源效率。因此，需要考虑服务的特性和QpS约束，多个应用程序支持，剩余电池电量，切换过程等方面，以全面了解节能技术。多播广播服务（MBS）支持，等等。本文调查了针对IEEE 802.16e / m提出的各种节能机制。我们首先介绍PSM的基本运行机制以及用于提高性能的研究问题。基于它们的局限性和潜力，我们然后回顾针对IEEE 802.16m（IEEE 802.16e的演进技术）的PSM的一些建议。读者会发现有趣的是，一旦PSM在IEEE 802.16e中得到了标准化，就提出了许多新的想法来改善原始PSM的性能，并且其中的一些想法得以保留并被先进的IEEE 802.16所采用，成为新的标准技术。米

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