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研究生:施啟煌
研究生(外文):Ch-Huang Shih
論文名稱:差異性服務網路架構下具可調性的平滑式封包標記之多媒體傳輸策略
論文名稱(外文):Adaptive Smooth Packet Marking for Multimedia Transmission over Differentiated-Service Networks
指導教授:謝錫堃謝錫堃引用關係黃文祥黃文祥引用關係
指導教授(外文):Ce-Kuen ShiehWen-Shyang Hwang
學位類別:碩士
校院名稱:國立成功大學
系所名稱:電機工程學系碩博士班
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:英文
論文頁數:44
中文關鍵詞:網路品質服務差異性服務網路多媒體
外文關鍵詞:MultimediaDiffServQoS
相關次數:
  • 被引用被引用:0
  • 點閱點閱:392
  • 評分評分:
  • 下載下載:75
  • 收藏至我的研究室書目清單書目收藏:1
在本論文中,針對在差異性服務網路架構下支援網路回饋機制的多媒體傳輸,我們提出了一套可調適性的策略將封包平滑的標記成具有較高等級的服務品質。此項機制主要考量在使用者付費的基礎下如何讓網路資源的利用更有效率。相對於將整個要求較佳服務等級的資料流從始至終皆優先傳送,我們只需要在網路擁塞的時段依據使用者預期的服務品質將一部分的資料量標記成優先傳送。為了提供穩定的多媒體感官效果,所提出的這項策略採用了平滑式的標記方法,除了儘可能的保證封包遺失率外同時也可以分散掉連續性封包遺失的效應。相關的系統實作已在採取即時協定發展的固定位元速率(Constant bit rate)語音以及可變位元速率(Variable bit rate)影像服務之特定應用程式上完成並加以驗證。最後,本篇論文也陳列出在實際的測試平台中所得到的效能及其評估結果。
In this paper, we present an adaptive smooth strategy to mark packets of multimedia stream supporting network feedback mechanism over Differentiated Service networks. This paper focuses on the basis of usage charging and of network resources utilization. In contrast of transmitting all packets at the premium class, only a portion of the packets is marked as premium to meet users’ expectation when the network is congested. To provide steady perceptual quality, the proposed strategy adopts the smooth marking scheme which scatters the possible continual packet loss to conform the soft loss rate guarantees. The implementations are made for the CBR and VBR traffic including audio and video stream respectively based on real-time protocol (RTP) standard. Finally, the performance results evaluated in the physical testbed will be given.
Contents……………………………………………………………………………Ⅰ
Tables…………………………………………………………………...…………..Ⅱ
Illustrations………………………………………………………………….…….Ⅲ
Chapter 1 Introduction………………………………………………………….1
Chapter 2 Background…………………………………………………………..3
2.1 Differentiated Service……………………………………………….…………..3
2.2 Queuing and Scheduling of DiffServ PHBs……………………...…………......6
2.3 Adaptive Packet Marking with Random Selection……………………………12
2.4 Real-Time Protocol: RTP……...………………………………………………15
2.5 H.261 Packetization On RTP…………………………………………………..18
Chapter 3 Adaptive Smooth Packet Marking……….……………………21
3.1 Overview………………………………………………………………………21
3.2 Soft Loss Rate Guarantees…………………………………………………….23
3.3 Smooth Marking…………………………………………….…………………25
Chapter 4 Strategy Implementation………………………………………...29
Chapter 5 Performance Evaluation…………………………………………33
5.1 Soft Loss Rate Guarantees…………………………………………………….34
5.2 Smooth Pre-marking…………………………………………….…………….36
Chapter 6 Conclusions…..……………………………………………….…….41
References…………………………………………………………………………42
[1] S. Black, D Black, M. Carlson, E. Davies, Z. Wang, and W. Weiss, “An Architecture for Differentiated Services”, RFC 2475, December 1998.
[2] David D. Clark, Wenjia Fang, “Explicit Allocation of Best-Effort Packet Delivery Service”, IEEE/ACM Transactions on Networking, Vol. 6, No. 4, August 1998.
[3] W. Feng, D. Kandlur, D. Saha, K. Shin, “Adaptive Packet Marking for Maintaining End-to-End Throughput in a Differentiated-Services Internet”, IEEE/ACM TRANSACTIONS ON NETWORKING, Vol. 7, No. 5, Oct. 1999.
[4] S. Shenker, C. Partridge and R. Guerin, “Specification of Guaranteed Quality of Service”, Internet Draft drafe-ietf-intserv-guaranteed-svc-08.txt, Feb 1997.
[5] J. Wroclawski, “Specification of Controlled-Load Network Element Service”, Internet Draft draft-ietf-intserv-ctrl-load-svc-05.txt, May 1997.
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[7] K. Nichols, S. Black, F. Baker and D Black, “Definition of the Differentiated Service Field (DS field) in the IPv4 and IPv6 headers”, RFC2474, IETF, Dec. 1998.
[8] B. David and A. Charny, “An Expedited Forwarding PHB (Per-Hop Behavior)”, RFC 3246, IETF, Mar. 2000.
[9] J. Heinanen, F. Baker, W. Weiss and J. Wroclawski, “Assured Forwarding PHB group”, RFC 2597, IETF, June. 1999.
[10] H. Schulzrinne, S. Casner, R. Frederick, V. Jacobson, “RTP: A Transport Protocol for Real-time Applications”, RFC 1889, Internet Engineering Task Force, 1996.
[11] Hans Eriksson, “MBONE: The Multicast Backbone”, Commun. ACM 37,8,Page(s) 54-60, August 1994.
[12] S. Casner, “Frequently Asked Questions (FAQ) on the Multicast Backbone (MBone)”, USC Information Sciences Institute (ISI). Available from ftp://ftp.isi.edu/mbone/faq.txt
[13] “Video Codec for Audiovisual services at p x 64kb/s”, ITU-T Recommendation of H.261, 1993.
[14] Thierry turletti and Christian Huitema, “Videoconferencing on the Internet”, IEEE/ACM Transactions on Networking, Vol. 4, No.3, June 1996.
[15] K. Nichols, V. Jacobson and L. Zhang, “A Two-bit Differentiated Services Architecture for the Internet”, RFC2638, July 1999.
[16] Information technology-coding of audio-visual objects, part 1: Systems, part2: Visual, part 3: Audio, ISO/IEC JTC 1/SC 29/WG 11, FCD 14 496, December 1998.
[17] R. Puri, K. Ramchandran, K. W. Lee, and V. Bharghavan, “Application of FEC based multiple description coding to Internet video streaming and multicast”, Proc. Packet Video Workshop, Cagliari, Sardinia, Italy, May 1-2, 2000.
[18] Y. Wang and Q.-F. Zhu, “Error Control and Concealment for Video Communication: A review”, Proc. IEEE, Vol. 86, pp. 974-997, May 1998.
[19] Orion Hodson and Colin Perkins, “Robust Audio Tool”
URL: http://www-mice.cs.ucl.ac.uk/multimedia/software/rat
[20] V. Jacobson and S. McCanne, “vic-Video Conferencing Tool”
URL: http://www-nrg.ee.lbl.gov/vic
[21] V. Jacobson, K. Nichols, K. Poduri, “The ‘Virtual Wire’ Per-Domain Behavior”, Internet Draft draft-ietf-diffserv-pdb-vw-00.txt, July 2000.
[22] J. Mackie-Mason and H. Varian “Pricing the Internet”, In Public Access to the Internet, pages269-314,May 1995.
[23] V. Jacobson and S. McCanne, “vic-A Flexible Framework for Packet Video”, Proceedings of ACM Multimedia, Nov 1995.
[24] S. Floyd, and V. Jacobson, “Link-sharing and Resource Management Models for Packet Networks”. IEEE/ACM Transactions on Networking, Vol. 3 No. 4, pp.365-386, August 1995.
[25] D. Clark, and V. Jacobson, “Flexible and Efficient Resource Management for Datagram Networks”, unpublished manuscript, April 1991.
[26] S. Floyd, and V. Jacobson, ”Randomly Early Detection Gateways for Congestion Avoidance”, IEEE/ACM Trans. Networking, vol. 3, pp. 397-413, Aug. 1993.
[27] R. Neilson, CA*netⅡ, “Differentiated Services Bandwidth Broker Specification”, October, 1998.
[28] “A Discussion of Bandwidth Broker Requirements for Internet2 Qbone Deployment”, Internet2 Qbone BB Advisory Council, Aug. 1999.
[29] The Linux GCC HOWTO, by Daniel Barlow < daniel.barlow@linux.org >.
[30] Gary R. Wright and W. Richard Stevens, TCP/IP Illustrated, Vol. 2, The Implementation.
[31] S. mcCanne and S. Floyd, http:// www-nrg.ee.lbl.gov/ns/. ns-LBNL Network Simulator, 1996.
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