在IEEE 802.16e行動寬頻無線網路下設計具有服務品質保證的省電排程機制

Power Saving Scheduling with QoS Guarantee for IEEE 802.16e Mobile Broadband Wireless Access Networks

顏文明(Wen-Ming Yen)

指導教授 ： 廖文華

大同大學/經營設計學院/資訊經營學系所/碩士(2008年)

摘要

IEEE 802.16e 是整合用於提供行動用戶(Mobile subscriber station，簡稱MSS)具有彈性的省電機制以節省電量消耗的行動寬頻無線網路標準。在本論文中，我們提出一個在 IEEE 802.16e之下具有服務品質保證(Quality of service，簡稱QoS)的封包排程機制。由於多媒體服務的普及化(例如: IP網路語音傳遞技術及MPEG 影音資料)，在一個行動用戶中會包含許多不同的服務品質保證類型。於是我們認為不同的服務品質保證類型將同時在一個MSS中做排程並且整合其休眠週期。這些封包將會在具有延遲(delay)及抖動(jitter)的服務品質保證之下被集中地排程，以減少狀態轉換的次數，進而達到省電的目的。我們提出的排程方法提供MSS具有QoS的連線並且將減少MSS的電量消耗。在實驗結果中顯示出我們提出的方法減少了電量消耗同時也延長行動用戶的使用時間。

關鍵字

服務品質保證 ； 省電機制 ； 抖動 ； 延遲 ； 微波存取全球互通技術(WiMAX)

並列摘要

The IEEE 802.16e is an emerging standard for mobile wireless broadband access systems that provides flexible sleep-mode operations for mobile subscriber stations (MSSs) to conserve energy consumption. In this paper, we proposed an algorithm to schedule packets for power saving with quality of service (QoS) based on IEEE 802.16e. Due to the popularization of multimedia services such as Voice over IP (VoIP) and MPEG video, the different types of QoS coexist in one MSS. Thus, we consider that different types of QoS should be scheduled in the same time and integrate the sleep duration in one MSS. The packets would be scheduled successively to reduce the number of status transitions under QoS requirements of delay and jitter. The scheduling algorithm provides the guarantee of QoS for the connections in the MSSs and minimizes the energy consumption of the MSSs. Simulation results show that our proposed power saving scheduling algorithm can reduce the energy consumption and prolong lifetime of the MSSs.

並列關鍵字

WiMAX ； wireless ； scheduling ； quality of service (QoS) ； power saving ； jitter ； delay

參考文獻

[1] M. Andrews, L. Qian, and A. Stolyar, “Optimal Utility Based Multi-User Throughput Allocation subject to Throughput Constraints,” Proceeding of the International Conference on IEEE INFOCOM, 2005.

[2] Y. -L. Chen and S.-L. Tsao, “Energy-Efficient Sleep-Mode Operations for Broadband Wireless Access Systems,” Proceeding of IEEE 64th Vehicular Technology Conference, Sep. 2006.

[4] C.-Y. Huang, H.-H. Juan, M.-S. Lin, and C.-J. Chang, “Radio Resource Management of Heterogeneous Services in Mobile WiMAX Systems,” IEEE Wireless Communications, vol. 14, no. 1, pp. 20-26, Feb. 2007.

[5] S.-C. Huang, R.-H. Jan, and C. Chen, “Energy Efficient Scheduling with QoS Guarantee for IEEE 802.16e Broadband Wireless Access Networks,” Proceeding of the International Conference on Wireless Communications and Mobile Computing, 2007.

[8] J. Jang, K. Han, and S. Choi, “Adaptive Power Saving Strategies of IEEE 802.16e Mobile Broadband Wireless Access,” Proceeding of Asia-Pacific Conference on Communications, Aug. 2006.