An energy-saving-centric downlink scheduling scheme for WiMAX networks

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題名:	An energy-saving-centric downlink scheduling scheme for WiMAX networks
作者:	陳彥文;Ke, Shaoh-Chen;Chen, Yen-Wen;Fang, Hao-An
貢獻者:	資訊電機學院通訊工程學系
關鍵詞:	Algorithms;Computing costs;Delay;energy saving;Joints;Real time;Rescheduling;Scheduling;sleep mode;Stations;WiMAX
日期:	2014-01-01
上傳時間:	2026-04-23 12:57:52 (UTC+8)
出版者:	John Wiley and Sons Ltd;Chichester: Blackwell Publishing Ltd
摘要:	摘要： SUMMARY This study proposes an energy‐saving‐centric downlink scheduling scheme to support efficient power utilization and to satisfy the QoS requirements. The base station considers the queue lengths of mobile stations with real‐time and non‐real‐time connections and considers their QoS requirements to determine the sleeping parameters when the mobile stations issue sleep requests. The proposed scheme appropriately reschedules the sleep‐requesting mobile station to transmit its queued packets for optimal power‐saving efficiency. The QoS requirement is considered as the constraint during traffic rescheduling. The treatment of real‐time connections generally requires a trade‐off of the delay requirement and the longer sleep window, and the non‐real‐time connections must concern the packet drop and minimum data rates when performing the energy‐centric scheduling. Two rescheduling algorithms, that is, whole and partial reschedules, are proposed and analyzed in this paper. The whole‐reschedule scheme provides improved energy‐saving performance at the cost of tolerable longer delay and computing complexity when compared with the partial‐reschedule scheme. Our simulation results indicated that both schemes not only guarantee the desired QoS but also achieve superior energy‐saving efficiency to that of traditional scheduling. Copyright © 2012 John Wiley & Sons, Ltd. In this paper, an energy‐centric scheduling policy is proposed to achieve energy efficiency under QoS constraints. Real‐time and non‐real‐time connections are treated differently with respect to providing ‘just enough’ QoS to save ‘extra’ energy. Two rescheduling algorithms are proposed, and the whole‐reschedule scheme provides improved energy‐saving performance at the cost of tolerable longer delay and computing complexity when compared with the partial‐reschedule scheme. 其他題名： Int. J. Commun. Syst 出版者： Chichester: Blackwell Publishing Ltd 出版日期： 2014-11 出處： International journal of communication systems, 2014-11, Vol.27 (11), p.2518-2535 資源來源： Wiley Journals Core Collection (NTUSG) 版權： Copyright © 2012 John Wiley & Sons, Ltd. 版權： Copyright © 2014 John Wiley & Sons, Ltd. 識別號： ISSN: 1074-5351 識別號： EISSN: 1099-1131 識別號： DOI: 10.1002/dac.2486
顯示於類別:	[通訊工程學系] 期刊論文

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