提昇WiMAX 802.16e頻寬利用率與省電效能之傳輸排程與省電技術

An Efficient Scheduling and Power Saving Mechanism for Enhancing Throughput and Energy Conservation in WiMAX 802.16e Networks

吳田富(Tien-Fu Wu)

指導教授 ： 黃連進

淡江大學/工學院/資訊工程學系資訊網路與通訊碩士班/碩士(2009年)

https://doi.org/10.6846/TKU.2009.01100

摘要

IEEE 802.16e為一提供寬頻行動上網存取服務之通訊協定，為了延長行動設備（Mobile Station, MS）的使用時間，在IEEE 802.16e的通訊協定中訂定了單一行動主機之睡眠模式（Sleep Mode），使MS可以達到週期性的醒睡，以減少其電能的消耗。然而，對基地台（Base Station, BS）而言，IEEE 802.16e內並未規範該如何安排多個 MS的資料傳輸。雖然有許多現有的研究針對單一或多個MS探討其省電排程，但其省電效能仍可供精進。本論文針對 BS研發一滿足QoS並兼具省電效益的醒睡排程機制，其基於所有 MS內的各個 UGS的頻寬需求與延遲限制，妥善安排 MS的醒睡排程，以避免 MS在傳輸資料時產生衝突，並能滿足各MS所需的QoS頻寬需求及有效節能行動主機電量的雙重目標。

關鍵字

IEEE 802.16e ； 睡眠模式 ； 醒睡排程 ； 省電效益

並列摘要

IEEE 802.16e defines the Power Saving Mechanism（PSM）which allows a mobile station （MS）to stay in sleep mode for saving its power consumption. However, it is still an open question to develop a good Base station（BS）scheduling mechanism which schedules several MSs for data transmission by taking into consideration their sleep requests. This paper aims at developing a scheduling mechanism which improves the bandwidth utilization of BS and saves the energy consumption of several MSs. Based on the bandwidth requirements and the delay constraints of several Unsolicited Grant Service（UGS）connections, the developed scheduling mechanism arranges the sleep and listening windows for each connection, avoids the transmission collision and makes good use of the bandwidth resource. Simulation study reveals that the proposed mechanism improves the WiMAX performance in terms of the network throughput and the energy consumptions of MSSs.

並列關鍵字

IEEE 802.16e ； Sleep Mode ； Power-Saving Scheduling ； Sleep Ratio

參考文獻

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