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研究生:林鴻文
研究生(外文):Hong-Wen Lin
論文名稱:在新一代整合式無線網路系統中提供具服務品質保證的換手機制
論文名稱(外文):QoS Aware Handover Scheme for the New Generation Wireless Networks
指導教授:吳曉光吳曉光引用關係
指導教授(外文):Hsiao-Kuang Wu
學位類別:碩士
校院名稱:國立中央大學
系所名稱:資訊工程研究所
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:2002
畢業學年度:90
語文別:英文
論文頁數:52
中文關鍵詞:新一代整合式無線網路可移動式IP服務品質保證
外文關鍵詞:QoSNew generation wireless networkIP mobility
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在新一代的無線網路將預期提供一個無遠弗屆的傳輸架構,在這種架構下使用者將能享受穩定、高品質及多樣化的服務。然而在這樣的環境中使用者可以依時地的不同,再任何時間任合地點選擇最合適的傳輸方式。而為了要使這樣的無遠弗屆的傳輸環境能在以IP網路中被建構與實現,必須有一套具有提供無縫式的漫遊與快速的行動管理機制。然而為了提供高品質及多樣化的服務在資源的規劃上必須做妥善的動態管理。
因此在本論文中我們將分別針對行動管理、漫遊服務及資源規劃等問題提出相關的方法,關於無縫式的漫遊本本架構中藉由”Intelligent Location Server”來達成跨系統與網域的漫遊服務,而在資源規劃方面我們提出了一套”適用於多服務型態的動態的資源分配機制(ARASFM)” 來滿足各種不同服務類型的服務品質保證,對於及時性的連線,我藉由此方法將能減少斷線機率並增加系統的使用率。而關於非及時性的封包,此方法將能有效的降低封包遺失率與傳輸的平均延遲。而關於在IP網路中提供行動管理方面,本論文提出一套”System Independent Vertical Handover Scheme”。 當使用者在完全獨立的系統下移動,藉由此方法將可以提供連續不中斷的連線品質。


New generation wireless network is expected to provide seamless, high quality, and multi-media supported services via ubiquitous communication systems that allow users to determine the most suitable wireless access technology anytime, anywhere. In order to build a continuous and ubiquitous communication system over IP based network, the well-defined seamless roaming scheme and IP mobility support scheme must be offered for personal location management. The dynamic and smart resource allocation scheme is required to provide seamless, high quality and multi-media support services.
Therefore, this thesis proposes a novel scheme to realize the seamless roaming via an intelligent location server. For resource allocation, we propose an “Adaptive Resource Allocation Scheme for Multi-traffic Wireless Network” (ARASFM) to guarantee QoS, according to traffic type, user priority and user mobility. The proposed scheme is based on resource re-negotiation to lower the handover-dropping probability and increase the overall system utilization. In IP mobility support, we propose a “System Independent Vertical Handover Scheme” for IP based network that is maintaining continuous end-to-end connection while mobile node is performing handover via different wireless access technologies, which could belong to different operators.



1Introduction 1
1.1Background and Motivation 1
1.2Research Issues 4
2Related Survey 7
2.1Radio Resource Allocation Survey 7
2.1.1Non-Priority Scheme (NPS) 7
2.1.2Fixed Resource Reserved Scheme 7
2.1.3Dynamic Resource Reserved Scheme 8
2.1.4Adaptive Resource Allocation Mechanism 9
2.2Roaming and Mobility Support Survey 10
2.2.1SIP 11
2.2.2IETF Mobile IPv4 13
2.2.3IETF Mobile IPv6 14
2.2.4QoS Aware Handoff Requirements 16
3QoS Aware Handover Scheme 18
3.1ARASFM 19
3.2System Independent Vertical Handover Scheme28
4Simulation and Analysis Result 39
4.1ARASFM Performance Analysis Experiment39
4.2Cost Analysis for Vertical Handover 43
5Conclusion 47
6Reference 49


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