臺灣博碩士論文加值系統

現今，隨選視訊(VoD) 是互聯網協議電視（IPTV）提供的一項服務，在觀看線上電影中非常受歡迎。在VoD中，即時播放的影片需要提供用戶最高品質的影片和更有效率的頻寬。在接入網路的解決方案中，EPON提供最好且低成本的頻寬和服務品質。從各種工業和學術生活來看，增加對SDN將控制平面與數據平面分開的需求要素。在本研究中，我們提出了光網絡單元（ONU）內的本地存儲（LS），利用基於TDMA-PON架構為最終用戶存儲影片，以便於直接對隨選視訊(VoD)進行多播。SDN控制器基於Flow Table控制和管理流量，而Open Flow用於與SD-OLT和SD-ONU通訊。仿真結果表明，本研究所提出的目的架構改善了服務品質（QoS）中的延遲時間、抖動、系統吞吐量及丟包的系統效能;並提高下游頻寬的效率。



索引項: 隨選視訊,本地存儲, TDMA-PON, 軟體定義網路, 服務品質 , 齊夫定律

In these days Video on Demand (VoD), one service that Internet protocol television (IPTV) provides, is very popular to watch the movie online. In VoD, videos playing in real time need to provide the quality of video and good bandwidth for the users. Amongst the access network solutions, EPON is the best to provide good bandwidth and quality of service at a low cost. The factor of increasing the demand for SDN from various industry and academic life separates the control plane from the data plane. In this research, we propose the local storage (LS) inside the optical network unit (ONU) for store the video for the end users based on TDMA-PON architecture to facilitate the direct multicasting for video on demand. SDN controller is used to control and manage the traffic based on Flow Table and Open Flow is used for communication with SD-OLT and SD-ONU. Simulation results show that the proposed architecture improve the quality of service (QoS) of system performance in terms of the delay time, jitter, system throughput and packet loss; and improve the efficiency of downstream bandwidth.


Index terms- VoD, Local Storage, Zipf Law, TDMA-PON, SDN, QoS.

Table of content

Abstract………………………………………………………………………………….i
Acknowledgement……………………………………………………………………...ii
Table of content………………………………………………………………………..iii
List of tables…………………………………………………………………………...iv
List of figures…………………………………………………………………………..v
1. Introduction………………………………………………………………………...1
2. Proposed System Architecture and Mechanism……………………………………4
2.1 Software Defined-OLT Architecture……………………………….6
2.2 Operations of Software Defined-OLT……………………………...7
2.3 Software Defined-ONU Architecture………………………………8
2.4 Operations of Software Defined-ONU…………………………….10
2.5 LDBA Operations…………………………………………………11
2.6 Signaling Control Operation……………………………………….12
3. PERFORMANCES ANALYIS……………………………………………………13
3.1 Packet Delay……………………………………………………….15
3.2 Jitter………………………………………………………………..16
3.3 System Throughput………………………………………………..17
3.4 Packet Loss………………………………………………………...17
3.5 Storage Impact……………………………………………………..18
4. Conclusion and Future Work………………………………………………………19
References………………………………………………………….………………..…20

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