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    題名: 應用於IEEE 802.16e下的多調變環境之允入控制機制
    A Novel Adaptive Multi-Modulation CAC Mechanism in IEEE 802.16e
    作者: 楊凱強
    貢獻者: 張宏慶
    Jang, Hung-Chin
    楊凱強
    關鍵詞: 多調變環境
    允入機制
    WiMAX
    QoS
    multi modulation
    adminission control
    日期: 2009
    上傳時間: 2016-05-09 15:29:14 (UTC+8)
    摘要: WiMAX發展至今已經制定出許多標準的規格，但在call admission control (CAC)、bandwidth request (BR)、bandwidth allocation和schedule的細節設計上並沒有標準的規劃和演算法。本文中，我們提出一個CAC機制叫作multi-modulation CAC。不同於目前大部分的CAC機制僅考慮到單一調變(modulation)的情況，我們的研究聚焦在多調變的環境上。並利用multi-modulation CAC改善傳統CAC無法在多調變底下正常運作的問題。我們提出的理論中，BS的CAC是藉由剩餘slot數決定是否要接受連線。最後，我們用網路模擬器NS-2 (network simulator version 2)作為測試實驗架構並分析評估實驗的系統效能。
    So far, WiMAX forum has worked out many specifications of the IEEE 802.16 standard. However, it does not have detailed mechanisms of connection admission control (CAC)、bandwidth request (BR)、bandwidth allocation and scheduling. In this thesis, we propose an admission control scheme called multi-modulation CAC. Rather than most CAC only considering the single modulation environment, our study focused on multi-modulation environment. We use the multi-modulation CAC to improve the traditional CAC can’t work well in multi-modulation environment. With the proposed scheme, base station performs connection admission control to decide whether or not to accept connection requests by number of the remained slot. Finally, we use NS-2 (network simulator version 2) as network simulator and develop an analytical model to evaluate the system performance.
    第一章 1
    1.1 背景簡介 1
    1.1.1 常見無線網路型態簡介 1
    1.1.2 WiMAX簡介 2
    1.2 研究動機與目的 4
    1.3 論文組織架構 5
    第二章 6
    2.1 WiMAX簡介 6
    2.1.1 WiMAX Modulation：OFDM 和OFDMA簡介 6
    2.1.2 WiMAX QoS簡介 9
    2.1.3 WiMAX CAC簡介 10
    2.1.4 WiMAX frame簡介 12
    2.2 CAC的相關研究 13
    2.2.1 考量QoS保証的CAC 15
    2.2.2 分散式CAC機制 16
    2.3 小結 18
    第三章 20
    3.1問題分析 20
    3.1.1 Bandwidth Based CAC在多調變環境遭遇的挑戰 21
    3.1.2 分析多調變環境下實際資源的分配 22
    3.1.3 最小頻寬保留法放任BE在高負載進入系統是否合理 24
    3.2研究方法 24
    3.2.1基本假設 25
    3.2.2方法概述 27
    第四章 30
    4.1實驗一 33
    4.2 實驗二 41
    第五章 50
    5.1結論 50
    5.2未來研究 51
    參考文獻 53
    參考文獻: [1]. IEEE,”IEEE Standard for Local and Metropolitan Area Networks Part 16 : Air Interface for Fixed Broadband Wireless Access System,” IEEE Std. 802.16-2004,Oct,2004.
    [2]. Jianhua He, Ken Guild, Kun Yang, and Hsiao-Hwa Chen ” Modeling Contention Based Bandwidth Request Scheme for IEEE 802.16 Networks”, IEEE COMMUNICATIONS LETTERS, VOL. 11, NO. 8, AUGUST 2007
    [3]. F. Hou, P. Ho, J. Cai, X. Shen, C. Hsieh, and A. Chen, “A Novel Distributed Connection Admission Control Scheme for IEEE 802.16 Networks,” Proceedings of the 10th ACM Symposium on Modeling, analysis, and simulation of wireless and mobile systems, pp. 173-180, Oct. 2007.
    [4]. Lee Howon, Kwon Taesoo, Cho Dong-Ho, “Extended-rtPS Algorithm for VoIP Services in IEEE 802.16 Systems” IEEE, Communications, 2006. ICC `06. IEEE International Conference on, v.5, pp.2060-2065, Jun-2006
    [5]. Chen Jianfeng, Jiao Wenhua, and Wang Hongxi, “A service flow management strategy for IEEE 802.16 broadband wireless access systems in TDD mode,” Communications, 2005. ICC 2005. 2005 IEEE International Conference on, 16-20 May, 2005. pp. 3422-3426 Vol. 5.
    [6]. Lidong Lin, Weijia Jia, Bo Han and Lizhuo Zhang, “Performance Improvement using Dynamic Contention Window Adjustment for Initial Ranging in IEEE 802.16 P2MP Networks”, IEEE Communications Society, WCNC 2007
    [7]. Lidong Lin, Weijia Jia and Wenyan Lu ” Performance Analysis of IEEE 802.16 Multicast and Broadcast Polling based Bandwidth Request”, IEEE Communications Society WCNC 2007
    [8]. Qiang Ni, Alexey Vinel, Yang Xiao, Andrey Turlikov, and Tao Jiang, "Investigation of Bandwidth Request Mechanisms under point-to-Multipoint Mode of WiMAX Networks", IEEE Communication Magazine, Vol. 45, No. 5, pp. 132--138, May 2007.
    [9]. Loutfi Nuaymi, “WiMAX Technology for Broadband Wireless Access”, John Wiley and Sons, 2007.
    [10]. Frank Chee-Da Tsai, Jenhui Chen, Chiang-Wei Chang, Wei-Jen Lien, Chih-Hsin Hung, and Jui-Hsiang Sum, "The Design and Implementation of WiMAX Module for ns-2 Simulator," Proc. Wksp. Wirel., Ad Hoc, Sensor Networks (WASN 2006), pp. 281-288, Chung-Li, Taiwan, August 10, 2006
    [11]. Haitang Wang, Wei Li and Dharma P. Agrawal, “Dynamic Admission Control and QoS for 802.16 Wireless MAN,” In Proc. of the Wireless Telecommunications Symposium(WTS’05), April 28-30, 2005, Southern California, USA, pp. 60-66.
    描述: 碩士
    國立政治大學
    資訊科學學系
    96753030
    資料來源: http://thesis.lib.nccu.edu.tw/record/#G0096753030
    資料類型: thesis
    顯示於類別:[資訊科學系] 學位論文

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