Energy Efficient Methods and Techniques for Mobile Computing
SKG '07 Proceedings of the Third International Conference on Semantics, Knowledge and Grid
Trade-off guidelines for power management mechanism in the IEEE 802.16e MAC
Computer Communications
Energy Consumption Issues on Mobile Network Systems
SAINT '08 Proceedings of the 2008 International Symposium on Applications and the Internet
Maximizing Unavailability Interval for Energy Saving in IEEE 802.16e Wireless MANs
IEEE Transactions on Mobile Computing
Power-saving scheduling with a QoS guarantee in a mobile WiMAX system
Journal of Network and Computer Applications
Delay analysis for sleep-based power saving mechanisms with downlink and uplink traffic
IEEE Communications Letters
An overview of next-generation mobile WiMAX technology
IEEE Communications Magazine
Optimized multicast service management in a mobile WiMAX TV system
CCNC'09 Proceedings of the 6th IEEE Conference on Consumer Communications and Networking Conference
A novel architecture for IEEE 802.16m subscriber station for joint power saving class management
COMSNETS'09 Proceedings of the First international conference on COMmunication Systems And NETworks
Enhanced power-saving mechanism to maximize operational efficiency in IEEE 802.16e systems
IEEE Transactions on Wireless Communications
In search of energy-efficient mobile networking
IEEE Communications Magazine
Enhanced power saving through increasing unavailability interval in the IEEE 802.16e systems
IEEE Communications Letters
Advanced power management techniques in next-generation wireless networks
IEEE Communications Magazine
Performance analysis of IEEE 802.16m sleep mode for heterogeneous traffic
IEEE Communications Letters
Torpid Mode: Hybrid of Sleep and Idle Mode as Power Saving Mechanism for IEEE 802.16j
WAINA '10 Proceedings of the 2010 IEEE 24th International Conference on Advanced Information Networking and Applications Workshops
Managing Power Saving Classes in IEEE 802.16 Wireless MANs: A Fold-and-Demultiplex Method
IEEE Transactions on Mobile Computing
Adaptive sleep mode management in IEEE 802.16m wireless metropolitan area networks
Computer Networks: The International Journal of Computer and Telecommunications Networking
Handover-specific optimization for IEEE 802.16e sleep mode
MMM'07 Proceedings of the 13th International conference on Multimedia Modeling - Volume Part II
IEEE 802.16J relay-based wireless access networks: an overview
IEEE Wireless Communications
Performance of Adaptive Sleep Period Control for Wireless Communications Systems
IEEE Transactions on Wireless Communications
IEEE Transactions on Consumer Electronics
Multicast Broadcast Services Support in OFDMA-Based WiMAX Systems [Advances in Mobile Multimedia]
IEEE Communications Magazine
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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 (ICT) 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 QoS 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.