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研究生:洪國智
研究生(外文):Kuo-Chih Hung
論文名稱:異質網路上具服務品質的IPv6群播服務
論文名稱(外文):QoS-Aware IPv6 Multicasting in Heterogeneous Networks
指導教授:周立德周立德引用關係
指導教授(外文):Li-Der Chou
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:2004
畢業學年度:92
語文別:中文
論文頁數:104
中文關鍵詞:服務品質差異性服務群播服務異質網路
外文關鍵詞:multicastheterogeneousDifferentiated Service
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未來的網路將會是異質網路 (Heterogeneous Networks) 整合應用的時代,各類型接取網路 (Access Networks) 之網路特性不盡相同,如頻寬大小等,造成在不同接取網路中,使用者所享有的服務品質 (Quality of Service,簡稱QoS) 也有所差異,因此整合異質網路,能夠讓使用者在任何時間任何地點皆可得到適當的服務。近年來網路上群體通訊的應用程式大幅成長,如視訊會議之類的多媒體服務具很大的頻寬需求,群播服務 (multicast) 一對多與多對多的特性能夠減低網路頻寬的負載。
群播服務可降減少群體通訊應用程式對網路造成的負載,多媒體服務的即時性 (real-time) 則需要一個服務品質保證的機制來完成。面對未來異質網路,IETF所提差異性服務 (Differentiated Service, DiffServ) 剛好可以達到異質網路的延展性 (scalability),同時保證使用者能享有服務品質。本論文提出具服務品質之IPv6群播之網路遴選系統 (System for Selecting Access Network with QoS-Aware IPv6 Multicasting,簡稱 SSANQIM),利用異質DiffServ Domain的概念,不同網路間,系統藉由頻寬代理人 (Bandwidth Broker,簡稱 BB) 來溝通每個網路現有頻寬使用狀況,根據此資訊本論文提出四大類的網路遴選策略,幫助使用者在使用群體通訊服務時,能夠選擇最適合的網路,並同時享有服務品質。
經過實驗結果可發現,SSANQIM系統的QoS架構能確實提供群播服務具有服務品質,而四大類網路遴選策略可以考量使用者需求,幫助使用者篩選出具有服務品質的接取網路來取得群播服務。
The future of the internet will be in heterogeneous networks, in its implementation and application. The different network characteristics of access networks i.e. the size of the bandwidth is a factor that the quality of service (QoS) is dependent on, and will affect it in different types of access networks, hence the application of heterogeneous networks will enable users to be able to receive a guaranteed QoS at anytime and any place. In recent years the growth of internet based communicative applications have grown exponentially, applications such as NetMeeting have a high demand in bandwidth quality, the implementation of multicast and its characteristics of being able to send 1 to multiple sources and many to many is a excellent tool to increase the quality of the NetMeeting experience and increasing bandwidth efficiency.
With multicast increasing bandwidth efficiency by decreasing bandwidth demand of net communicative applications, the real time characteristics of internet multimedia will require a system to guarantee its minimum quality service. In respect to future heterogeneous networks, the differentiated service (DiffServ) provided by IETF is just the service that will provide heterogeneous networks with scalability and at the same time provide a suitable quality of service. My thesis suggests the implementation of System for selecting access networks with QoS-Aware IPv6 multicasting (SSANQIM for short) which will increase the quality of service. This system uses the concept of the DiffServ Domain, which from different networks the bandwidth broker (BB for short) will communicate and determine the current bandwidth usage of the different networks, and based on this data 4 different types of SSANQIM will be suggested, which will help the user determine which network will be the most suitable for use, and can also guarantee the quality of service.
According the results of experiments,the QoS framework of SSANQIM can provide multicast with QoS support, and four proposed network selection policies can help users who want to get multicast service to select suitable networks with QoS support.
第一章 緒論 2
1.1 概要 2
1.2 研究動機 3
1.3 研究目的 4
1.4 論文架構 6
第二章 背景知識與相關研究 7
2.1 群播技術與IPv6群播技術之相關研究 7
2.1.1 IGMP與群播各項群播路由協定 7
2.1.2 IPv6群播技術相關研究 9
2.2 QoS架構與DiffServ網路中的群播 13
2.2.1 QoS架構 13
2.2.2 DiffServ網路中的群播 17
2.3 網路遴選策略相關研究 22
2.4 異質網路相關研究 22
2.4.1 Wireless LAN 22
2.4.2 GPRS 24
2.4.3 UMTS 25
第三章 系統設計 28
3.1 網路環境與系統功能設計 28
3.2 圖形化使用者介面 32
3.3 網路遴選策略模組 33
3.3.1 New Call Priced Based (NCPB) 36
3.3.2 New Call Efficiency Based (NCEB) 36
3.3.3 Handoff Call Priced Based (HCPB) 37
3.3.4 Handoff Call Efficiency Based (HCEB) 37
3.4 頻寬查詢模組 43
3.5 群播群組偵測模組 43
3.6 回應時間測量模組 44
3.7 使用者接取網路的流程 45
第四章 系統之實作 47
4.1 SSANQIM系統實作架構 47
4.2 開發工具與環境 48
4.3 系統功能與展示 51
4.3.1 具QoS的IPv6 multicast環境 51
4.3.2 SSANQIM系統之圖形化使用者介面 54
第五章 系統之評估與測試 59
5.1 系統評估-相關系統比較 59
5.2 實驗一—驗證系統提供群播具有QoS 62
5.3 實驗二—驗證NCPB-HCPB 70
5.4 實驗三—驗證NCPB-HCEB 72
5.5 實驗四—驗證NCEB-HCPB 75
5.6 實驗五—驗證NCEB-HCEB 78
5.7 實驗六—服務要求成功率 81
第六章 結論與未來發展方向 86
6.1 結論 86
6.2 未來發展工作 87
6.2.1 雙向SSANQIM系統 87
6.2.2 多元化網路遴選策略 87
參考文獻 88
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