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研究生:張博森
研究生(外文):Bo-Sen Zhang
論文名稱:多層影片群播速率控制協定和其公平特性
論文名稱(外文):Layered Video Multicast Rate Control Protocols and their Fairness Properties
指導教授:陳秋華陳秋華引用關係
指導教授(外文):Chyouhwa Chen
學位類別:碩士
校院名稱:國立臺灣科技大學
系所名稱:電子工程系
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:中文
論文頁數:95
中文關鍵詞:多層群播速率控制
外文關鍵詞:layered multicastrate control
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Receiver-driven Layered Multicast (RLM)[1]是以接收端為基礎的累加式多層群播架構,用來解決網路壅塞與異質性的問題,然而Layered Video Multicast with Retransmissions (LVMR)[2]提出的階層式接收端動態速率控制,不同於以發送端為基礎或以接收端為基礎的速率控制方法,而是利用發送端、接收端及中間代理人來相互交換訊息,每個實體只需維護與其相關的資訊即可。我們使用Self Organised Transcoding (SOT)[4]架構中的尋找轉碼者演算法與遺漏位元對應圖對照的方法,來尋找最適合的中間代理人及在中間代理人裡建立最精確的知識庫,並以此提高LVMR的效率。在本文中,我們將此方法稱為Self Organised Layered Multicast (SOLM)[14]。但將原本CBR的資料改成MPEG4時,傳統的多層群播已不再穩定了!於是我們加入Diffserv的觀念衍生出SOLM-P並進一步的改善它。在論文的最後,我們設計了幾個實驗並以實驗結果來佐證我們的主張。

Receiver-driven Layered Multicast (RLM) [1] is a system for cumulative layered multicast with receiver-based. This system uses hierarchical rate control mechanism to adjust network congestion and heterogeneity. However Layered Video Multicast with Retransmissions (LVMR)[2] propose that hierarchical rate control mechanism distributes the information between the sender, receivers, and some agents in the network in such a way that each entity maintains only the information relevant to itself. We use SOT’s Transcoder Selection Algorithm[4] and Comparison with Loss Bitmap to look for appropriate agents and establish intelligent knowledge-base. In this paper, we call this method as Self Organised Layered Multicast (SOLM)[14]. But we use MPEG4 source instead of CBR, traditional layered multicast is not stable any more! Hence we put conception of Diffserv into it as SOLM-P and further improve it. In the end of this thesis, we provide several experiments and simulation results to back our claims.

Chapter 1 Introduction …………………………………………. 1-1
Chapter 2 Background …………………………………………. 2-1
2-1 LVMR Framework……………………………………… 2-1
2-1-1 Hierarchical Rate Control……………………… 2-1
2-1-2 Architecture of LVMR…………………………… 2-2
2-2 SOT Related Scheme ……………………………………. 2-5
2-2-1 SOT Framework…………………………………… 2-5
2-2-2 Transcoder Selection Algorithm …………………….. 2-6
2-2-3 Comparison with Loss Bitmap ……………………… 2-10
2-3 SOLM Framework …………………………………….. 2-12
2-4 Receiver Selectable Prioritize Multicast ……….. 2-19
Chapter 3 Extension SOLM …………………………… 3-1
3-1 SOLM-PⅠ …………………………………………… 3-1
3-1-1 SOLM with Priorities……………………………… 3-1
3-1-2 Network Support for SOLM-P………………………… 3-6
3-2 SOLM-PⅡ …………………………………………… 3-10
3-2-1 Problems with SOLM-P Design……………………… 3-10
3-2-2 Improve SOLM-P…………………………………… 3-12
Chapter 4 Experiments Design and Simulation Result ………… 4-1
4-1 Decodable Frame ………………………………………… 4-4
4-1-1 Introduce Decodable Frame…………………………… 4-4
4-1-2 Compare Decodable Frame…………………………… 4-5
4-2 Fairness Index ………………………………………... 4-8
4-2-1 Introduce Fairness Index………………………. 4-8
4-2-2 Compare Fairness Index………………………. 4-10
4-3 Different Start Time Experiment …………………... 4-12
4-4 Large topology experiment …………………………... 4-16
4-4-1 Small Capacity Network …………………………... 4-18
4-4-2 Large Capacity Network …………………………... 4-25
4-4-3 Discuss Large Topology Network …………………... 4-33
Chapter 5 Conclusion and Future Work ………………………… 5-1
Reference

[1] S. McCanne, V. Jacobson and Martin Vetterli. “Receiver-Driven Layered Multicast”. Proceedings of ACM SIGCOMM 96, October 1996.
[2] Li, X., Paul, S., Ammar, M. H. “Layered Video Multicast with Retransmissions(LVMR): Evaluation of Hierarchical Rate Control”. Proceedings of INFOCOMM 98, March/April 1998, San Francisco, CA.
[3] Xue Li, Sanjoy Paul, Pramod Pancha, Mostafa Ammar. "Layered Video Multicast with Retransmission (LVMR): Evaluation of Error Recovery Schemes''. Proceedings of NOSSDAV 97, St. Louis. MO, May 1997.
[4] I. Kouvelas, V. Hardman and J. Crowcroft. “Network Adaptive Continuous-Media Applications Through Self Organised Transcoding”. In NASSDAV 1998.
[5] L. Vicisano, J. Crowcroft & L. Rizzo. "TCP-like congestion control for layered multicast data transfer". In Proceedings IEEE INFOCOMM 98, March/April 1998, San Francisco.
[6] A. Legout, and E. W. Biersack. "PLM: Fast Convergence for Cumulative Layered Multicast Transmission Schemes". In Proceedings of ACM SIGMETRICS 2000, Santa Clara, CA, USA, June 2000.
[7] S. McCanne et al. “UCB/LBNL/VINT Network Simulator — ns (version 2)”. Software and documentation available from http://www.isi.edu/nsnam/ns/, November 1997.
[8] R. Gopalakrishnan, J. Griffioen, G. Hjalmtysson, C. Sreenan, and S. Wen, “A simple loss differentiation approach to layered multicast”, in IEEE Infocom, (Tel Aviv, ISRAEL), March 2000.
[9] D. Rubenstein, J. Kurose, and D. Towsley, "The Impact of Multicast Layering on Network Fairness", SIGCOMM 1999.
[10] S. Sarkar, L. Tassiulas, "Fair distributed congestion control in multirate multicast networks", submitted to the IEEE/ACM Transactions on Networking, 2000.
[11] S. Sarkar and L. Tassiulas, "Fair Allocation of Discrete Bandwidth Layers in Multicast Networks", Proceedings of IEEE Infocom 2000; Tel Aviv, Israel, March 2000.
[12] S. Floyd, V. Jacobson, S. Liu, S. McCanne, and L. Zhang. “A Reliable Multicast Framework for Light-weight Sessions and Application Level Framing”. IEEE/ACM Transactions on Networking, 5(6):784-803, December 1997. An earlier version of this paper appeared in ACM SIGCOMM 95, August 1995, pp.342-356.
[13] http://www-tkn.ee.tu-berlin.de/research/trace/trace.html, MPEG-4 and H.263 Video Traces for Network Performance Evaluation.
[14] Min-Lin Lu. “Self-Organized Rate Control Scheme for Layered Multicast”, master’s thesis, 2000, Electronic Engineering, NTUST, Taiwan.

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