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研究生:方志豪
研究生(外文):Chih-Hao Fang
論文名稱:適用於行動隨意網路下的使用者導向服務搜尋機制
論文名稱(外文):User-driven Service Discovery on Internet Mobile Ad Hoc Network
指導教授:吳榮訓吳榮訓引用關係
指導教授(外文):Roung-Shiunn Wu
學位類別:碩士
校院名稱:國立中正大學
系所名稱:資訊管理學系
學門:電算機學門
學類:電算機一般學類
論文種類:學術論文
論文出版年:2005
畢業學年度:93
語文別:英文
論文頁數:50
中文關鍵詞:行動隨意網路服務搜尋機制使用者導向
外文關鍵詞:MANETService DiscoveryInternet-Gateway
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行動隨意網路是未來行動商務關鍵的網路拓撲之一,如何在這樣的網路上面搜尋到適當的服務也是逐漸形成相當重要的議題。傳統集中式的服務搜尋機制並不適用於行動隨意網路,主要是每個行動節點是可移動的,隨時可能會離開這個網路,而且行動節點本身的資源有限,並不適合擔任一個伺服器的角色。
本篇論文提出了一個使用者導向的分散式服務搜尋機制,以結合了兩位學者的方法為基礎,並加入了使用者觀點的搜尋概念。這個概念主要是考慮到使用者本身感興趣的服務類型,並將這些資訊輸入至行動設備,再藉由服務宣告的方式 ( Service Advertising) 將每個使用者有興趣的服務類型分享給周圍的行動節點知道。只要周圍的行動節點在往後接收到同樣服務型態的訊息時,可以主動將這些資訊傳遞給有興趣的使用者。如此可以加快服務搜尋的回應時間、減少網路頻寬的浪費,並使得服務搜尋的結果更符合使用者的需求。此外,我們也考慮到與Internet的與整合。當行動隨意網路裡的所有行動節點並沒有提供符合使用者需求的服務時,我們的服務搜尋機制可以試著尋找附近的Internet Gateway,藉由Internet Gateway連上Internet以尋求更適當的服務
Mobile Ad Hoc Network (MANET) is a key component of future mobile electronic commerce environment. Service discovery on MANET is also an important research issue in recent years. Existing service discovery protocols designed for traditional infrastructure-based networks is not suitable for MANET since each device in MANET is mobile and can move out of the vicinity at any time. Moreover all the mobile devices hosting services are resource-poor and are not capable of acting as a registration or directory server. Therefore, service discovery in MANET needs a distributed mechanism that every mobile device is autonomous and should not depend on some other nodes to advertise their services.
In this thesis, we develop the distributed mechanism and propose an user-driven approach that takes the user’s interesting service into account. In addition, our proposed mechanism also takes the Internet connection into consideration. In other word, if there is no service matching satisfied with the user within MANET, we will look for the Internet-Gateway and try to connect to the Internet to get more appropriate service.
Chapter 1. Introduction
1.1 Background ………………………………………………………......1
1.2 Motivation ..………………………………………..…………………2
1.3 Problems and Objectives………………………………….………3
1.4 Expected Results……………………………….…………………….7
Chapter 2. Related Work
2.1 Mobile Ad Hoc Network……………………………………………...8
2.1.1 Overview of MANET……………………………………..8
2.1.2 Routing Protocols in MANET…………………………….9
2.1.3 Internet-Gateway connected MANET………………….11
2.2 Service Discovery in MANET………………………………………13
2.2.1 Reply caching and distribution…………….……………..14
2.2.2 Group-based Service Discovery……………………..…....17
Chapter 3. System Architecture
3.1 System Model…………………………………………………...…..21
3.2 Service Discovery Architecture……………………………………..22
3.2.1 Self-interest Group……………………. …...……………..22
3.2.2 Advertising Stage……………………………………….....22
3.2.3 Request-Routing Stage……………………...……………..26
3.2.4 Internet-Gateway Connection……………… ………....32
Chapter 4. Simulation
4.1 Simulation Environment……………………………………...……..36
4.1.1 NS-2: Network Simulator 2………………………..………….36
4.1.2 Simulation Model……………....……………….……………..36
4.2 Simulation Result and Analysis ………………………...………..37
4.2.1 Simulation Case I…………………………..………………...37
4.2.2 Simulation Case II…………………………………………....42
4.2.3 Simulation Case III…………………………………………..46
Chapter 5. Conclusion
5.1 Conclusion…………..…………………………………………..…..49
Reference………………………………..……………………..………..50
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