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Author: 何俊雄
Randy - Kurniawan
Thesis Title: 在IEEE 802.16 網狀網路下的動態抑止及迷你時槽配置之研究
Study on Dynamic Holdoff and Minislot Allocation for IEEE 802.16 Mesh Networks
Advisor: 黎碧煌
Bih-Hwang Lee
Committee: 吳傳嘉
Chwan-Chia Wu
賴源正
Yuan-Cheng Lai
鄭瑞光
Ray-Guang Cheng
馮輝文
Huei-Wen Ferng
Degree: 碩士
Master
Department: 電資學院 - 電機工程系
Department of Electrical Engineering
Thesis Publication Year: 2010
Graduation Academic Year: 98
Language: 英文
Pages: 50
Keywords (in other languages): Dynamic Holdoff, Minislot Allocation
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The IEEE 802.16 mesh mode with coordinated distributed scheduling (C-DSCH) has recently become a promising technology for deploying wireless mesh network (WMN) as wireless backbone network. Therefore, the protocol design of WMN should achieve a high network throughput. In IEEE 802.16 mesh standard, the network performance is limited by the holdoff algorithm for bandwidth reservation procedure and minislot allocation mechanism for data scheduling.
In this thesis, we propose a dynamic holdoff algorithm (DHA) combined with adjoin multigrant minislot allocation (AMMA) for IEEE 802.16 mesh mode with C-DSCH. The proposed holdoff algorithm improves network throughput by decreasing the time required to establish data schedule and increase the utilization of control-plane bandwidth. In addition, adjoin multigrant minislot allocation improves data scheduling efficiency and application throughput because it efficiently allocates as many minislot as possible to meet requester node requirement using only one THP. Simulation results show that our proposed scheme performs better than existing holdoff algorithm and minislot allocation mechanism in terms of end-to-end delay, network throughput, and bandwidth satisfaction ratio.

Abstract iv Acknowledgement v Table of Contents vii List of Tables viii List of Figures ix Chapter 1 Introduction 1 1.1 Research Motivation 1 1.2 Organization of Thesis 4 Chapter 2 The IEEE 802.16 Mesh Mode MAC Overview 5 2.1 Frame Structure of the IEEE 802.16 Mesh Mode 5 2.2 The Coordinated Distributed Scheduling 9 2.3 MSH-DSCH Transmission Interval and Its Effect on Network Performance 15 2.4 Minislot Allocation in IEEE 802.16 17 Chapter 3 The Dynamic Holdoff Algorithm and Adjoin Multigrant Minislot Allocation 22 3.1 The Dynamic Holdoff Algorithm (DHA) 22 3.2 The Adjoin Multigrant Minislot Allocation (AMMA) 26 Chapter 4 Performance Evaluation 30 4.1 Chain Topology 32 4.2 Grid Topology 35 4.3 General Topology 40 Chapter 5 Conclusion 46 Reference 47 Biography 50

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