視訊封包封裝與調適性自動重送於無線區域網路之研究

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姓名

陳紹偉(Shao-Wei Chen) 查詢紙本館藏

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電機工程學系

論文名稱

視訊封包封裝與調適性自動重送於無線區域網路之研究
(Video Packetization and Adaptive ARQ for Video Transmission over Wireless LAN)

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摘要(中)

隨著視訊資料編碼和網路技術的日益精進，在IEEE 802.11無線區域網路上資料的種類與特性已逐漸從過去的非即時性數據資料演進至現階段的視訊多媒體服務，然而，由於IEEE 802.11無線網路易受干擾的特性和無法提供服務品質保証的現況，使得多媒體服務品質遭受嚴重的影響。在本論文中，同時提出一套可依照視訊資料重要性而彈性封裝的視訊封包封裝機制，以及一套具有優先權考量的調適性自動重送機制來解決目前的問題。在編碼端，具優先權考量的視訊封裝機制可依據視訊封包的不同重要性，彈性地調整封包封裝的最大允許長度，使較重要的視訊封包可以因封包封裝長度的適度縮小，而在較高錯誤率的無線通道下不容易發生漏失。具有優先權考量的調適性自動重送機制則可依據無線通道的現況和視訊封包的重要性，動態地調整可重送次數，以同時達較好的通道使用效率和視訊品質。模擬實驗結果顯示，在五種不同錯誤環境以及四種不同視訊來源的各種交叉組合下，調適性自動重送機制和具優先權考量的視訊封裝機制均能有效地保護較重要的封包，減少資料漏失率並且符合視訊服務的延遲限制。在平均錯誤位元長度10位元和位元錯誤率為3×10^-4至5×10^-4的環境中，本機制可比靜態自動重送和優先權自動重送多出平均3dB的視訊品質。

摘要(英)

With the technology advances in digital compression and wireless networks, real-time streaming of video content over IEEE 802.11 wireless networks is a multimedia application full of potentials. However, unlike wired packet switched networks, IEEE 802.11 wireless networks are relatively unreliable due to an error prone physical channel and the lack of QoS guarantee. Therefore, the video quality transmitting over wireless networks will possibly be degraded.
In the thesis, we propose a priority video packetization mechanism and an adaptive ARQ scheme according to video packet priorities to reduce the degradation in wireless networks. At the video encoder, the priority video packetization mechanism sets the video packet size base on the video types. Namely, the packet size is reduced for important video frames to reduce packet losses when transmitting over severely interfered wireless channels. The adaptive ARQ in the IEEE 802.11 point coordinator adapts the repeat limits depend on the wireless channel condition and video packet priorities to achieve both high channel utilization and good video quality. Simulation results show that with five error patterns and four video sequences, the proposed mechanism indeed achieves reduction of lost video packets and protection of important video packets within the delay constraint. The proposed mechanisms can improve the PSNR by 3dB on average under wireless channels with a mean burst error length 10 bits at the range of bit error rate from 3×10^-4 to 5×10^-4.

關鍵字(中)

★ MPEG-4
★ 自動重送
★ IEEE 802.11無線區域網路
★ 封包封裝

關鍵字(英)

★ packetization
★ ARQ
★ MPEG-4
★ IEEE 802.11 wireless network

論文目次

第一章緒論 1
1.1 研究背景與動機 1
1.2 相關研究 3
1.3 論文架構 5
第二章 IPv6無線網路上的視訊服務 6
2.1 MPEG-4視訊壓縮技術 6
2.2 IPv6新一代網際網路 17
2.3 RTP/RTCP簡介 21
2.4 MPEG-4 網路視訊封裝機制 23
2.5 IEEE 802.11無線區域網路媒體接取層（MAC） 31
2.6 自動重送機制（ARQ） 37
第三章視訊品質與既有無線區域網路QoS機制之關係41
3.1 IEEE 802.11 PCF的效能分析 41
3.2 視訊封包漏失和視訊品質 48
3.3 自動重送（ARQ）次數與視訊封包延遲分析 50
第四章調適性自動重送與視訊封裝 54
4.1系統架構 55
4.2 視訊封包封裝 57
4.3 調適性自動重送 63
4.4 IEEE 802.11協調者的緩衝區 69
4.5 調適性自動重送與封裝機制之整體架構 73
第五章實驗結果與討論 76
5.1模擬環境說明和參數定義 77
5.2 6個客戶端的數據比較 82
5.3 8個和12個客戶端的數據比較 90
第六章結論 99
參考文獻 100
附錄A 其它數據資料 103

參考文獻

[1] ISO/IEC JTC1/SC29/WG11, "Information Technology-Coding ofAudio-Visual Objects, Part 1: System, Part 2: Visual, Part 3: Audio," FCD 14496, Dec. 1998.
[2] ISO/IEC JTC1/SC29/WG11, "MPEG-4 Video Verification Modelversion 18.0," N3908, Jan. 2001.
[3] I. Moccagatta, S. Soudagar, J. Liang, and H. Chen, "Error-Resilient Coding in JPEG-2000 and MPEG-4," IEEE Journal on selected areas in communications, vol. 18, no. 6, pp. 899-914, Jun. 2000.
[4] AVT Working Group, H. Schulzrinne, S. Casner, R. Frederick, V. Jacobson, "RTP: A Transport Protocol for Real-Time Applications," RFC 1889, Jan. 1996.
[5] T. Turletti and C. Huitema, "RTP payload format for H.261 video streams," RFC 2032, Oct. 1996.
[6] C. Zhu, "RTP payload format for H.263 video streams," RFC 2190, Sept. 1997.
[7] Y. Kikuchi, T. Nomura, S. Fukunaga, Y. Matsui, H. Kimata, "RTP Payload Format for MPEG-4 Audio/Visual Streams," RFC 3016, Nov. 2000.
[8] 方俊忠, "使用RTP 作資料同步與標頭壓縮的設計與實作," 國立台灣大學資訊工程研究所碩士論文, 中華民國八十九年六月.
[9] D. Wu, Y.T. Hou, W. Zhu, T.H. Chiang, Y.Q. Zhang and H.J. Chao, "On end-to-end architecture for transporting MPEG-4 video over the Internet," Circuits and Systems for Video Technology, IEEE Transactions, vol. 10, pp. 923-941, Sept. 2000.
[10] S.Shenker, C.Partidge, and R. Guerin ,"Specification of Guaranteed Quality of Service," RFC 2212, Sep. 1997.
[11] R. Braden, L.Zhang, Berson, S. Herzog, and S. Jamin, "Resource ReSerVation Protocol (RSVP)," RFC 2205, Sep. 1997.
[12] S. Blake, D. Blake, M. Carlson, E. Davies, Z. Wang, and W. Weiss, "An Architecture for Differentiated Services," RFC 2475, Dec. 1998.
[13] K. Nichols, S. Blake, F. Baker, and D. Black, "Definition of the Differentiated Services Field (DS Field) in the IPv4 and IPv6 Headers," RFC 2474, Dec. 1998.
[14] K. Nicholsand K. Poduri, "An Expedited Forwarding PHB," RFC 2598, Jun. 1999.
[15] J. Heinanen, F. Baker, W. Weiss, and J. Wroclawski, "Assured Forwarding PHB Group," RFC 2597, Jun. 1999.
[16] T. Ahmed, G. Buridant, and A. Mehaous, "Encapsulation and Marking of MPEG-4 Video Over IP Differentiated Service," in Sixth IEEE Symposium on Computers and Communications, pp. 346-352, July 2001.
[17] 黃能富著, "區域網路與高速網路," 維科出版社, 中華民國八十七年六月.
[18] F. Cali, M. Conti and E. Gregori, "IEEE 802.11 Wireless LAN: Capacity Analysis and Protocol Enhancement," in Proceedings of INFOCOM'98, Mar. 1998.
[19] S. Moangold, S. Choi, P. May, O. Klein, G. Hiertz and L. Stibor, "IEEE 802.11e Wireless LAN for Quality of Service," in Proc. European Wireless '2002, Feb. 2002.
[20] A. Banchs, M. Radimirsch and X. Perez, "Assured and Expedited Forwarding Extensions for IEEE 802.11 Wireless LAN," in Tenth IEEE International Workshop on Quality of Service, pp. 237-246, May 2002.
[21] T. Suzuki and S. Tasaka, "Performance Evaluation of Priority-Based Multimedia Transmission with the PCF in an IEEE 802.11 Standard Wireless LAN," Personal, Indoor and Mobile Radio Communications, Vol. 2, pp. 70-77, Sep. 2001.
[22] K. Kanghee, S. Seokjoo and K. Kiseon, "A Novel MAC Scheme for Prioritized Services in IEEE 802.11a Wireless LAN," in ATM (ICATM 2001) and High Speed Intelligent Internet Symposium, pp. 196-199, Apr. 2001.
[23] A. Doufexi, D. Redmill, D. Bull and A. Nix, "MPEG-2 Video Transmission Using the HiperLAN/2 WLAN Standard," IEEE Transactions on Consumer Electronics, Vol. 47, no. 3, pp. 354-363, Aug. 2001.
[24] M. Visser and M. Zarki, "Voice and Data Transmission Over an 802.11 Wireless Network," in Proc. IEEE PIMRC'95, pp. 648-652, 1995.
[25] Y. Shan and A. Zakhor, "Cross Layer Techniques For Adaptive Video Streaming Over Wireless Network," in International Conference on Multimedia and Expo, pp. 277-280, Aug. 2002.
[26] Q. Li and M. van der Schaar, "Providing Adaptive QoS to Layered Video over Wireless Local Area Networks through Real-Time Retry Limit Adaptation," submitted to IEEE Trans. on Multimedia, Dec. 2002.
[27] E. Modiano, "An adaptive Algorithm for Optimizing The Packet Size Used in Wireless ARQ Protocols," Wireless Network, pp. 279-286, May 1999.
[28] M. Schwartz, "Telecommunication Networks: Protocols, Modeling and Analysis," Addision-Wesley, pp. 119-135, Mar. 1987.
[29] E.N. Gilbert, "Capacity of a Burst-Noise Channel," Bell System Technical Journal, pp. 1253-1266, Sep. 1960.
[30] J.Takahashi, H.Tode, and K.Murakami, "QoS Enhancement Methods for MPEG Video Transmission on the Internet," IEICE Trans. Commun., Vol. E85-B, no.5, pp. 1002-1011, May 2002.
[31] M. Shreedhar and G. Varghese, "Efficient Fair Queuing Using Deficit Round-Robin," IEEE Transactions on Networking, Vol. 4, no. 3, pp. 328-333, Jun. 1996.
[32] S. S. Kanhere and H. Sethu, "On the Latency Bound of Deficit Round Robin," in Proceedings of the IEEE International Conference on Computer Communications and Networks, pp. 548-553, Oct. 2002.
[33] 林勤偉, "視訊隨選網路上的視訊訊務描述與管理," 國立中央大學通訊工程研究所碩士論文, 中華民國九十一年六月.
[34] Y.Q. Shi and H. Sun, "Image and Video Compression for Multimedia Engineering," CRC Press LLC, 2000.
[35] J. van der Meer, Philips Electronics, D. Mackie, V. Swaminathan, D. Singer, P. Gentric, "RTP Payload Format for Transport of MPEG-4 Elementary Streams," draft-ietf-avt-mpeg4-simple-07, Feb. 2003.
[36] F.L. Leannec and G.M. Guillemot, "Error Resilient Video Transmission Over the Internet," in SPIE Proceeding Visual Communications and Image Processing (VCIP'99), Jan. 1999.
[37] J.Y Yeh and C. Chen, "Support of Multimedia Services with the IEEE 802.11 MAC Protocol," in Communications, 2002. ICC 2002. IEEE International Conference, Vol. 1, pp. 600-604, May 2002.
[38] 曾毓婷, "支援ATM之IEEE 802.11多重擷取層協定," 國立臺灣大學電信工程學研究所碩士論文, 中華民國八十九年六月.

指導教授

張寶基(Pao-Chi Chang)

審核日期

2003-7-10

推文