(3.236.214.19) 您好!臺灣時間:2021/05/09 20:46
字體大小: 字級放大   字級縮小   預設字形  
回查詢結果

詳目顯示:::

: 
twitterline
研究生:陳沐恩
研究生(外文):Mu En Chen
論文名稱:以DCCP為基礎之SVC動態串流傳輸
論文名稱(外文):DCCP Based SVC Dynamic Streaming
指導教授:吳承崧
指導教授(外文):Cheng-Shong Wu
口試委員:李宗憲許蒼嶺李昌明蘇暉凱
口試日期:2011/7/27
學位類別:碩士
校院名稱:國立中正大學
系所名稱:通訊工程研究所
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:2011
畢業學年度:99
語文別:中文
論文頁數:55
中文關鍵詞:UDPDCCPSVC影像品質決策
外文關鍵詞:UDPDCCPSVCQuality decision
相關次數:
  • 被引用被引用:1
  • 點閱點閱:204
  • 評分評分:系統版面圖檔系統版面圖檔系統版面圖檔系統版面圖檔系統版面圖檔
  • 下載下載:7
  • 收藏至我的研究室書目清單書目收藏:0
當網路科技越來越普及,網路服務已深入我們的日常生活中,多媒體串流服務便是其中之一,傳統的多媒體串流服務多採用UDP為其傳輸層協定,UDP是一種非連線導向,不可靠且盡全力傳輸的協定,相對於連線導向且會重傳的TCP而言,UDP更適合用於多媒體串流傳輸上,但是當網路處於擁塞狀態時,UDP的特性卻會使得網路上其他服務處於更差的狀態,因UDP缺乏擁塞控制,會佔據整體網路的不少頻寬,進而拖垮其他網路服務,UDP無法得知接收者的狀況,無法根據當前接收者的狀況調整其傳輸的速率,若網路頻寬不足以負荷當前傳輸影像的位元率,傳輸過程中便會產生封包的遺失,封包的遺失有可能讓使用者無法正確解碼所收到的影像封包,導致播放畫面的不連續,對於多媒體串流傳輸的接收者而言這是不樂見的,此時DCCP(Datagram Congestion Control Protocol)被提出來希望能取代UDP成為多媒體串流傳輸的協定。
DCCP具有UDP的不重送特性及TCP的擁塞控制,因此當網路擁塞時DCCP不會因重送而造成影像的延遲,還可藉由從接收端獲得的資訊調整其傳輸速率,減輕網路擁塞的情況,本論文採用SVC(scalable video coding)做為我們傳輸的影像格式,因SVC是階層式架構,一份影片即可實現調整出不同品質的目的,我們並使用DCCP做為多媒體串流的傳輸協定, 利用其從接收端獲得的資訊且藉由SVC的特性,執行我們所提出的影像品質決策方法,達到隨著網路狀況調整傳輸的影像品質的目的,進而確保使用者能在網路擁塞下仍能保有基本的觀賞畫面。
Service of multimedia streaming is one of popular technology, which has been one of our daily life. It is a connectionless, unreliable, and best effort by using UDP transport layer protocol in Traditional multimedia. Generally speaking, UDP is more suitable than TCP. When network is congested, UDP takes a lot of bandwidth,which makes other service poor. Because UDP doesn’t know the condition of receivers, it can’t adjust its transmission rate. If the transmission rate is overloading, the event of packet loss may occur and reciever decode failed for video stream. Then the receivers’s video would be discontinuous, which is not welcome for user. It is hoped that DCCP(Datagram Congestion Control Protocol) replace UDP become transport layer protocol of multimedia service.
DCCP, there is no retransmission property and congestion control. Therefore, it can mitigate congestion for network that DCCP adjust transmission rate with feedback when network is congested. In addition, the vedio would not appear the delay with DCCP because there is no retransmission mechanism in DCCP that is different with TCP. This paper use SVC(scalable video coding) to be our video format,which is a hierarchical structure and adapt different quality from one video .We use DCCP to be our transport layer protocol, and implement our Quality decision mechanism by feedback from receiver and characteristic of SVC. It is hoped that our mechanism can adjust level of SVC bitstream with variable condition of network to ensure basic quality of view when network is congested.
誌謝辭 i
中文摘要 ii
Abstract iii
目錄 iv
圖目錄 vi
表目錄 vii
第一章 序論 1
1.1 背景與動機 1
1.2 研究方法 2
1.3 論文架構 3
第二章 背景介紹與相關研究議題 4
2.1 背景介紹 4
2.1.1 DCCP概述 4
2.1.2 CCID 2擁塞控制 5
2.1.3 CCID 3擁塞控制 6
2.2 可調性視訊編碼技術 7
2.3 IP群播 10
第三章 SVC影像串流模型 12
3.1 系統架構 12
3.2 串流模型架構 14
3.3 Media Server 15
3.3.1 元件介紹 16
3.3.2 運作流程 16
3.4 Media Proxy 17
3.4.1 元件介紹 18
3.4.2 運作流程 19
3.5 Video Receiver 22
3.5.1 元件介紹 22
3.5.2 運作流程 24
第四章 影像品質決策 27
4.1 影像品質決策 27
4.1.1 Media Server之影像品質決策流程 27
4.1.2 Media Proxy之影像品質決策流程 29
第五章 SVC影像串流模型實作之效能分析 32
5.1 實驗之相關資訊說明 32
5.1.1 軟體開發 32
5.1.2 測試影像資訊 32
5.1.3 實驗評估之效能指標 33
5.2 Media Server 到Media Proxy之效能分析 35
5.2.1 封包遺失率 36
5.2.2 不可解I畫面比例 39
5.2.3 效能分析 42
5.3 MP到Video Receiver效能分析 44
5.3.1 封包遺失率 45
5.3.2 不可解I畫面比例 48
5.3.3 效能分析 50
第六章 結論與未來展望 52
6.1 結論與未來展望 52
References 54

[1]Cccc Aleksander Kostuch , Krzysztof Gierłowski, and Jozef Wozniak, “PerforMPnce Analysis of Multicast Video Streaming in IEEE 802.11g Tested Environment”,Springer Boston . Wireless and Mobile Networking, Aug.2009. vol. 308. ISBN:978-3-642-03840-2.
[2]Eddie Kohler, MPrk Handley, and Sally Floyd, “Designing DCCP: Congestion Control Without Reliability, ” SIGCOMM’06, Sep., 2006, Pisa, Italy, pp. 27-38.
[3]B. Gorkemli, M. R. Civanlar, “SVC Coded Video Streaming over DCCP ”,8th IEEE Int. Symp. on Multimedia (ISM'06), 2006.
[4]Internet Engineering Task Force(IETF) http://www.ietf.org/
[5]連耀南, 丁諭祺, “DCCP是否能完全取代UDP?,” 國立政治大學資訊科學系 民國九十九年十月.
[6]S. Floyd and E. Kohler, Profile for Datagram Congestion Control Protocol (DCCP) Congestion Control ID 2: TCP-Like Congestion Control, IETF RFC 4341, MPr.2006; http://www.ietf.org/rfc/rfc4341.txt.
[7]S. Floyd, E. Kohler, and J. Padhye, Profile for Datagram Congestion Control Protocol (DCCP) Congestion Control ID 3:TCP-Friendly Rate Control (TFRC), IETFRFC 4342, MPr. 2006; http://www.ietf.org/rfc/rfc4342.txt.
[8]Y.C. Lai, “DCCP: Transport Protocol with Congestion Control and Unreliability”, IEEE INTERNET COMPUTING STANDARD2008, 2008.
[9]H. Schwarz, D. MPrpe, T. Wiegand, “Overview of Scalable Video Extension of H.264/AVC Standard,” IEEE Transactions on Circuits and Systems for Video tech., Vol.85, pp.1013-1120, Sept. 2007.
[10]H. Schwarz, J. Vieron, T. Wiegand, M. Wien, A. Eleftheriadis, V Bottreau, “JSVM Software, Text, and ConforMPnce Status,” Joint Video Team, Doc. JVT-AE031, July, 2009.
[11]邱繼儒,「以SIP為導向整合跨網域群播與SVC多媒體傳輸服務技術」,國立中正大學通訊工程研究所碩士論文,民國99年7月。
[12]Wenger, S. ; Ye-Kui Wang and Schierl, T. , ”Transport and Signaling of SVC in IP Networks”, IEEE Circuits and Systems for Video Technology, Sept. 2007, vol. 17, issue. 9, pp. 1164–1173.
[13]Schierl, T. ; Gruneberg, K. and Wiegand, T. , “Scalable Video Coding over RTP and MPEG-2 Transport Stream in Broadcasts and IPTV Channel”, IEEE Wireless Communications 2009, October 2009, vol. 16, issue. 5, pp. 64–71.
[14]Kwang-deok Seo, Jin-soo Kim, Soon-heung Jung, and JeongJu Yoo, “A Practical RTP Packetization Scheme for SVC Video Transport over IP Networks”, ETRI Journal, vol.32, no.2, Apr. 2010, pp.281-291.
[15]S. Wenger, Y.-K. Wang and T. Schierl, ”RTP Payload ForMPt for SVC Video”, IETF Internet Draft draft-ietf-avt-rtp-svc-21.txt.
[16]Beau williamson, “Developing IP Multicast Networks”, Published by Cisco Press.
[17]Peng Chen et al., “A Network-Adaptive SVC Streaming Architecture,” ICACT, vol. 2, 2007, pp. 955-960.
[18]Che-Min Lin, John K. Zao, Wen-Hsiao Peng, Chia-Chi Hu, Hsin-Min Chen, and Chun-Kai Yang. 2008. Bandwidth Efficient Video Streaming Based Upon Multipath SVC Multicasting. Wireless Communications and Mobile Computing Conference, 2008. IWCMC '08. International.
[19]Open SVC Decoder Mplay , http://sourceforge.net/projects/opensvcdecoder/
[20]A.Ziviani, B. E. Wolfinger, J. F. Rezende, O. C. M. B. Duarte, and S.Fdida, “Joint Adoption of QoS Schemes for MPEG Streams,” Multimedia Tools and Applications Journal, vol. 26, no. 1, pp. 59-80, MPy 2005.
[21]H. KouMPras, A. Kourtis, C. Lin and C. Shieh, “End-to-end prediction model of video quality and decodable frame rate for MPEG broadcasting services”, Int. Journal on Advances in Networks and Services, Vol. 1, No.1, 2008.

QRCODE
 
 
 
 
 
                                                                                                                                                                                                                                                                                                                                                                                                               
第一頁 上一頁 下一頁 最後一頁 top
系統版面圖檔 系統版面圖檔