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研究生:詹國君
研究生(外文):Kuo-Chun Chan
論文名稱:WiMAX無線網路使用階層式位置管理之容錯性研究
論文名稱(外文):Study on Tolerance of Using Hierarchical Location Management for WiMAX Wireless Network
指導教授:陳信北
學位類別:碩士
校院名稱:清雲科技大學
系所名稱:資訊工程所
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:2011
畢業學年度:99
語文別:中文
論文頁數:43
中文關鍵詞:WiMAX位置管理位置更新階層混合式架構容錯性
外文關鍵詞:WiMAXlocation managementlocation updatinghierarchical hybrid architecturetolerance
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WiMAX全球微波存取互通介面,是一項新興的無線通信技術,能提供面向互聯網的高速連接,是IEEE 802.16的介面標準。WiMAX無論在通訊距離、傳輸速度、建網成本方面都是一個很理想的寬頻無線接入解決方案。為因應Mobile WiMAX階段的應用,我們必須事前考慮系統的行動管理相關問題。而近年來有關位置管理的研究有相當多,主要有下列方法:靜態位置區域的位置管理策略(static location area)、動態位置區域的位置管理策略(dynamic location area)、遞轉指標位置管理策略(forwarding pointer strategy)、區域固定點更新的位置管理策略(local anchor strategy)及分散式動態的位置管理策略 (distributed dynamic location management scheme)。而WiMAX系統的行動位置管理研究,大都只著重於位置更新成本及呼叫連線成本的降低,然而關於系統發生故障時,如何在最短時間,損失最小的情況下恢復正常運作這方面,少有研究。因此本研究提出一個應用於WiMAX無線網路的階層混合式架構來解決這些問題,在階層混合式架構中,我們將訂定正常運作流程以及系統發生故障時的容錯運作流程,確保在災變發生時,在最短時間內轉接至備援系統繼續運作。而經由模擬實驗的結果,也了解到本實驗所提出之階層混合式網路位置管理架構,比起以往所應用於WiMAX系統的集中式與分散式網路位置管理架構,能夠更加提高系統的容錯性與服務品質。

WiMAX – Worldwide Interoperability for Microwave Access, is a new type of wireless communication technology. It can offer a high speed communication for internet. In terms of communication distance, transmission speeds and construction cost, WiMAX is an ideal solution. For the applications to Mobile WiMAX, we must consider the problems about location management. There are many researches about location management in recent years. The major methods include static location area, dynamic location area, forwarding pointer strategy, local anchor strategy, distributed dynamic location management scheme. Previous years, researchers usually focused on decreasing the cost of location updating and paging. There are few researches about that when the system has failed. We must to resume the system operation by the minimum cost and the shortest time. Therefore, we proposes a hierarchical hybrid architecture to resolve the related problems. In this study, we set the normal operation and fault-tolerant operation of the program into the hierarchical hybrid architecture to ensure that when the system has failed, it can turn into another backup working system in the shortest time. By the simulation results, we understand that the hierarchical hybrid architecture is better than centralized architecture and distributed architecture on Tolerance. The reliability and tolerance of system will be highly improved.

中文摘要i
英文摘要ii
誌謝iii
目錄iv
表目錄vi
圖目錄vii
第一章 前言1
1.1 研究背景1
1.2研究動機及目的3
1.3論文架構5
第二章 WiMAX介紹6
2.1 IEEE 802.16介面標準6
2.2 WiMAX於技術上的優勢8
2.3 WiMAX的服務品質9
2.4 WiMAX各項功能之總結10
第三章 階層混合式架構及運作程序11
3.1無線行動通訊網路模型11
3.2階層混合式系統架構14
3.3正常運作程序15
3.4容錯運作程序16
第四章 系統可靠度分析20
4.1系統可靠度分析20
4.2位置更新成本(location updating cost)分析21
4.3呼叫連線成本(paging cost)分析22
第五章 模擬與實驗結果25
5.1系統流程25
5.2行動台移動模式27
5.3實驗架構27
5.4實驗方法與參數30
5.5正常運作下的實驗結果32
5.6故障情況下之實驗結果34
第六章 結論與未來方向38
參考文獻39
附錄42
簡歷44


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