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研究生:孫玉祥
研究生(外文):Yu-Siang Sun
論文名稱:在RPR網路的保護模式中對MPEG影音串流的模擬與分析
論文名稱(外文):Simulative Analysis of MPEG Video Streaming in RPR under Protection Events
指導教授:王文楓王文楓引用關係
指導教授(外文):Wen-Fong Wang
學位類別:碩士
校院名稱:國立雲林科技大學
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:2009
畢業學年度:97
語文別:英文
論文頁數:53
中文關鍵詞:服務品質保證影像壓縮彈性封包環包覆模式引導模式
外文關鍵詞:XvidQoSRPRResilient Packet RingMPEGSteerWrap
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彈性封包環(RPR)是用於區域網路以及都會區網路的一套新穎的標準(IEEE 802.17)。RPR網路有兩種保護機制,分別是引導式(Steering)保護機制和包覆式(Wrapping)保護機制,這兩種保護機制都能夠在50ms的時間之內修復網路上所發生的鏈結錯誤的問題,並恢復整個網路的連通性。在RPR網路中,它將訊務細分為三種不同的優先權等級,分別是服務等級A(classA)、服務等級B(classB)以及服務等級C(classC),RPR可以實現服務品質保證(quality of service:QoS)。在本篇論文中,我們著重於當RPR的保護模式啟動之下,將編碼過後的MPEG影音串流帶入我們所開發的RPR模擬平台,並在模擬結束時可以觀看影片的品質。也就是說,我們開發一套模擬平台,能夠將真實影音多媒體資訊帶入RPR模擬當中,同時可以測試RPR的傳輸與保護功能。在我們的模擬實驗裡,我們能夠真實地看到MPEG影音多媒體傳輸於RPR的保護模式下所呈現出的影片品質。同時,我們也能實現對三種優先權不同的訊務,分別在訊務負載為0%~50%之下做系統效能與封包延遲的比較。
Resilient Packet Ring (RPR) is a novel standard (IEEE 802.17) for the construction of local and metropolitan area networks. It has two protection mechanisms, steering and wrapping, to recover a link failure on the network. Both of the mechanisms can restore the network in less than 50 ms, and maintain the connectivity between each node. In a RPR network, there are three types of service classes, classA, classB, and classC so that RPR can provide Quality of Service (QoS) guarantee. In this study, we focus on the video quality for the transmission of MPEG encoded bit stream in different traffic service classes as the protection mechanisms start. We develop a simulative platform, which can take real video media as traffic loading for input to RPR network to test the RPR transmission functionalities. In the simulative experiment, we can see the qualitative difference of the MPEG video transmitted in the protection mechanisms of RPR. At the same time, we compare the frame delay of classA, classB, and classC under the two protection mechanisms of RPR when traffic loading is configured from 0% to 50%.
Contents
ABSTRACT...................................ii
List of Tables.............................vi
List of Figures............................vii
Chapter1. Introduction.....................1
1.1 Overview of RPR........................1
1.2 Related work...........................3
1.3 Problem description....................4
1.4 Structure of the thesis ................4
Chapter2. Network Architecture.............5
2.1 Moving Pictures Experts Group (MPEG)...5
2.2 System architecture....................6
2.2.1 Node structure.......................8
2.2.1.1 Traffic shapers....................8
2.2.1.2 Topology database..................9
2.2.1.3 Queuing model......................9
2.2.2 Protection mechanisms................9
2.2.2.1 Steering protection................9
2.2.2.1 Wrapping protection................10
Chapter3. Simulation Mechanism for Transmitting MPEG Frames...11
3.1 Xvid encoder and frame segmentation....11
3.2 RPR simulator..........................11
3.3 Packet loss emulation..................12
3.4 Simulative scenario....................12
Chapter4. Simulation Experiments...........13
4.1 System parameters......................13
4.2 Background traffic model...............13
4.3 Quasi-practical experiment.............14
4.3.1 Normal condition.....................14
4.3.2 Wrapping mechanism...................16
4.3.3 Steering mechanism...................17
4.4 Uniform traffic scenario...............19
4.4.1 Wrapping mechanism...................20
4.4.2 Steering mechanism...................30
Chapter5. Conclusion.......................41
Reference:.................................42
[1]"IEEE standard for information technology-telecommunications and information exchange between systems-local and metropolitan area networks-specific requirements-part 17: resilient packet ring (RPR) access method and physical layer specifications" IEEE Std. 802.17-2004, pages: 1-644, September, 2004.
[2]Robichaud Y.F., Changcheng Huang, 2005, “Improved fairness algorithm to prevent tail node induced oscillations in RPR”, ICC, Volume 1, pages: 402-406, May, 2005.
[3]Peng Yue, Zengji Liu, Jing Liu, “High performance fair bandwidth allocation algorithm for resilient packet ring”, AINA, pages: 415 - 420, March, 2003.
[4]Tang H., Lambadaris I., Mehrvar H., Talim J., “A new access control scheme for metropolitan packet ring networks”, GLOCOMW, Page:281 – 287, Nov, 2004.
[5]Kalmanek C., et al., “Congestion control in resilient packet rings,” ICNP, pages: 118-117, 2004.
[6]Kirstadter A., Hof A., "Bandwidth-efficient resilience in metro networks - a fast network-processor-based RPR implementation," IEEE, pages: 355-359, 2004.
[7]Kvalbein A., Gjessing S., “Protection of RPR strict order traffic”, LANMAN, Page(s):6 pp, September, 2005.
[8]Liping Y., et al., “Study of Steering Protection Switch in Case of Unidirectional Link Failure in RPR”, ICCS, pages: 1-5, October, 2006.
[9]Jian Zhu, Matrawy A., Lombadaris I., “Optimization of resilient packet ring networks scheduling for MPEG-4 video streaming”, ICC, Volume 1, Pages: 271 – 275, May, 2005.
[10]http://www.afterdawn.com/glossary/
[11]De la Cruz Gamez E., Paliza F.F.A., “Traffic Shaping in a RPR-MAN Node”, CERMA , Volume 2, Pages:95 – 99, Sept, 2006.
[12]Kawwas C.B., Soleymani M.R., “FPD: a novel scheme to enhance RPR performance in service provider networks”, LCOMM, Volume 11, Pages: 4 – 6, Jan, 2007.
[13]R. M. Chen, “The Simulative Analysis of IEEE 802.17Resilient Packet Ring in protection mode,” Institute of Computer Science and Information Engineering, National Yunlin University of Science and Technology, Master thesis, 2008.
[14]C. C. Huang, J. M. Yang, “Access Delay Performance of Resilient Packet Ring under Bursty Periodic Class B Traffic Load,” IEEE International Conference, pages: 1217-1221, 2004.
[15]Y. S. Chen, “The Simulative Analysis of IEEE 802.17Resilient Packet Ring in QoS Properties,” Institute of Computer Science and Information Engineering, National Yunlin University of Science and Technology, Master thesis, 2006.
[16]http://www.xvid.org/Xvid-Codec.2.0.html
[17]SIMSCRIPT II.V, http://www.simscript.com.
[18]K. Thompson, et al., “Wide-area Internet traffic patterns and characteristics,” Network, IEEE, Volume 11, Issue 6, pages: 10-23, November, 1997.
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