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| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 魏宏宇 | |
| dc.contributor.author | Yin-Cheng Huang | en |
| dc.contributor.author | 黃胤誠 | zh_TW |
| dc.date.accessioned | 2021-06-15T02:23:37Z | - |
| dc.date.available | 2009-08-20 | |
| dc.date.copyright | 2009-08-20 | |
| dc.date.issued | 2009 | |
| dc.date.submitted | 2009-08-18 | |
| dc.identifier.citation | [1] Fu-Wang Chang. Adaptive Frame Prioritization for Enhanced Video Streaming over IEEE 802.11e. Master’s thesis, National Taiwan University, June 2008.
[2] Yu-Hsiang Lei. Interference-Resisted and Soft Guaranteed QoS for Heavy Contention 802.11 Networks. Master’s thesis, National Taiwan University, June 2008. [3] The Madwifi Project. http://madwifi-project.org/. [4] Click Modular Router. http://read.cs.ucla.edu/click/. [5] IEEE Standard for Information Technology - Telecommunications and Information Exchange Between Systems - Local and Metropolitan Area Networks - Specific Requirements - Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications. IEEE Std 802.11-2007 (Revision of IEEE Std 802.11-1999), 2007. [6] IEEE Standard for Information Technology - Telecommunications and Information Exchange Between Systems - Local and Metropolitan Area Networks - Specific Requirements - Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications - Amendment: Medium Access Method (MAC) Quality of Service Enhancements. IEEE Std 802.11e-2005 (Amendment to IEEE Std 802.11-1999), 2005. [7] T.Wiegand, G. Sullivan, and A. Luthra. Draft ITU-T recommendation and final draft international standard of joint video specification (ITU-T Rec. H. 264— ISO/IEC 14496-10 AVC). JVT-G050r1, Geneva, Switzerland, 2003. [8] T. Wiegand, GJ Sullivan, G. Bjontegaard, and A. Luthra. Overview of the H.264/AVC video coding standard. IEEE Transactions on circuits and systems for video technology, 13(7):560–576, 2003. [9] I.E.G. Richardson. H. 264 and MPEG-4 video compression: video coding for nextgeneration multimedia. John Wiley & Sons Inc, 2003. [10] C. Wang, W. Tang, K. Sohraby, and B. Li. A simple mechanism on MAC layer to improve the performance of IEEE 802.11 DCF. In Broadband Networks, 2004. BroadNets 2004. Proceedings. First International Conference on, pages 365–374, 2004. [11] C. Wang and W. Tang. A probability-based algorithm to adjust contention window in IEEE 802.11 DCF. In Communications, Circuits and Systems, 2004. ICCCAS 2004. 2004 International Conference on, volume 1, 2004. [12] L. Gannoune and Y.L.B. HEIG-VD. A Non-linear Dynamic Tuning of the Minimum ContentionWindow (CW min) for Enhanced Service Differentiation in IEEE 802.11 ad-hoc Networks. In IEEE 63rd Vehicular Technology Conference, 2006. VTC 2006-Spring, volume 3, 2006. [13] Romdhani L., Q. Ni, T. Turletti, and F. INRIA. Adaptive EDCF: enhanced service differentiation for IEEE 802.11 wireless ad-hoc networks. 2003 IEEE Wireless Communications and Networking, 2003. WCNC 2003, 2, 2003. [14] L. Gannoune and S. Robert. Dynamic tuning of the contention window minimum (CWmin) for enhanced service differentiation in IEEE 802.11 wireless ad-hoc networks. In IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, volume 1, pages 311–317. [15] Q. Xia and M. Hamdi. Contention window adjustment for IEEE 802.11 WLANs: a control-theoretic approach. In IEEE International Conference on Communications, 2006. ICC’06, volume 9, 2006. [16] L. Xiong and G. Mao. An Analysis of the Coexistence of IEEE 802.11 DCF and IEEE 802.11 e EDCA. In Proceeding of IEEE Wireless Communications and Networking Conference (WCNC, pages 2264–2269, 2007. [17] C.H. Foh, Y. Zhang, Z. Ni, J. Cai, and K.N. Ngan. Optimized cross-layer design for scalable video transmission over the IEEE 802.11 e networks. IEEE Transactions on Circuits and Systems for Video Technology, 17(12):1665–1678, 2007. [18] A. Ksentini, M. Naimi, and A. Gueroui. Toward an improvement of H. 264 video transmission over IEEE 802.11e through a cross-layer architecture. IEEE Communications Magazine, 44(1):107–114, 2006. [19] A. Fiandrotti, D. Gallucci, E. Masala, and E. Magli. Traffic prioritization of H.264/SVC video over 802.11 e ad-hoc wireless networks. In Proc. IEEE ICCCN, 2008. [20] H.264/AVC JM Reference Software. http://iphome.hhi.de/suehring/tml. [21] A. Lombardo, G. Morabito, and G. Schembra. Modeling intramedia and intermedia relationships in multimedia network analysis through multiple timescale statistics. IEEE Transactions on Multimedia, 6(1):142–157, 2004. [22] S.H. Park, S. Lee, and J.W. Kim. Network-adaptive high definition MPEG-2 streaming over IEEE 802.11 a WLAN using frame-based prioritized packetization. In Proceedings of the 3rd ACM international workshop on Wireless mobile applications and services on WLAN hotspots, pages 84–87. ACM New York, NY, USA, 2005. [23] D-ITG, Distributed Internet Traffic Generator. http://www.grid.unina.it/software/ITG/index.php. | |
| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/43571 | - |
| dc.description.abstract | 近幾年來，隨著有線和無線網路的普及，多樣化的資訊在網路上傳輸。除了傳統的資料傳輸之外，一些多媒體應用也深受大家喜愛，例如視訊會議、即時影像串流等。另一方面，為了因應多媒體資訊傳輸的需求，目前相當熱門的IEEE 802.11無線網路標準也提出能提供多媒體服務品質（Quality of Service, QoS）保證的延伸標準－－802.11e。在這篇論文中，我們實做出一個在802.11e架構下的跨網路階層（cross-layer）設計，來提高H.264/AVC影像標準的影片在無線網路中的傳輸品質。我們結合了跨層動態影像優先權分配（Cross-layer Adaptive Video Prioritization，CAVP）和軟性服務品質 （SoftQoS）。其中跨層動態影像優先權分配提供了應用層的動態影像畫格優先權分配（Video Frame Prioritization，VFP）和媒體存取層的動態優先權分配（MAC-layer Adaptive Prioritization，MAP）。在應用層決定封包的重要性及優先權後，接著在媒體存取層預測每個存取種類（Access Category，AC）的延遲時間，並決定封包實際歸屬的存取種類。軟性服務品質則是藉由對競爭窗口（Contention Window，CW）的控制，達到提高及時性和高重要性封包的傳輸成功率。在真實平台上的測量結果顯示，我們提出的架構的確能提高無線網路傳輸後的動態影像的品質，尤其在網路較為擁塞的環境下。 | zh_TW |
| dc.description.abstract | In recent years, wireless communication are rapidly developed. IEEE 802.11 based WLAN is one of the most popular networks. More users use wireless network to access multimedia contents from internet. That is to say, the traffic in the air include traditional data packets and multimedia packets. Therefore, an extension of IEEE 802.11 standard called 802.11e is developed to provide QoS support for different types of traffic. In this thesis paper, we implement a cross-layer architecture to enhance the QoS transmission of H.264/AVC video stream in IEEE 802.11e wireless environment. We integrate Cross-layer Adaptive Video Prioritization (CAVP) and SoftQoS. CAVP provides Application layer Video Frame Prioritization (VFP), which prioritizes packet according to PSNR influence level, and MAC-layer Adaptive Prioritization (MAP), which estimates the delay time of each access category (AC) and chooses the better one. SoftQoS, on the other hand, controls contention window (CW) size to improve the successful transmission rate of important information. We also shows the results of the experiments on real testbed. Our cross-layer architecture has better performance than the works before, especially when the channel is congested. | en |
| dc.description.provenance | Made available in DSpace on 2021-06-15T02:23:37Z (GMT). No. of bitstreams: 1 ntu-98-R96921028-1.pdf: 1686422 bytes, checksum: 9652166a47ec52ad91283f9d812b1f84 (MD5) Previous issue date: 2009 | en |
| dc.description.tableofcontents | Abstract . . . . . . . . . . . . . . . . . . . . . . . . i
List of Figures . . . . . . . . . . . . . . . . . . . . . iv List of Tables . . . . . . . . . . . . . . . . . . . . . vi 1 Introduction . . . . . . . . . . . . . . . . . . . . . 1 2 RelatedWorks . . . . . . . . . . . . . . . . . . . . . 4 2.1 An Overview of IEEE 802.11e . . . . . . . . . . . . 4 2.2 H.264/AVC Codec . . . . . . . . . . . . . . . . . . 7 2.3 Related Works . . . . . . . . . . . . . . . . . . . 9 3 System Structure . . . . . . . . . . . . . . . . . . . 11 3.1 Overall Structure . . . . . . . . . . . . . . . . . 11 3.2 Cross-Layer Adaptive Video Prioritization . . . . . 12 3.2.1 Video Frame Prioritization . . . . . . . . . . 12 3.2.2 MAC-Layer Adaptive Prioritization . . . . . . . 16 3.3 SoftQoS – Contention Window Resetter . . . . . . . 19 4 Implementation Issues . . . . . . . . . . . . . . . . . 21 4.1 Implementations related to Madwifi . . . . . . . . 21 4.2 CAVP with Click . . . . . . . . . . . . . . . . . . 23 5 Experiment on Real Testbed . . . . . . . . . . . . . . 25 5.1 Experiment Settings . . . . . . . . . . . . . . . . 25 5.2 Experiment Results . . . . . . . . . . . . . . . . 28 5.2.1 PSNR Results . . . . . . . . . . . . . . . . . 28 5.2.2 Packet Loss Rate . . . . . . . . . . . . . . . 32 5.2.3 The Effect of Decoding Deadline . . . . . . . . 35 5.2.4 The Effect of Non-constant Background Traffic . 38 6 Conclusion . . . . . . . . . . . . . .. . . . . . . . . 39 Bibliography . . . . . . . . . . . . . .. . . . . . . . . 41 | |
| dc.language.iso | en | |
| dc.title | 在IEEE 802.11e實驗平台上的強化視訊串流 | zh_TW |
| dc.title | Enhanced Video Streaming over IEEE 802.11e Experimental Testbed | en |
| dc.type | Thesis | |
| dc.date.schoolyear | 97-2 | |
| dc.description.degree | 碩士 | |
| dc.contributor.oralexamcommittee | 葉丙成,謝宏昀,周俊廷 | |
| dc.subject.keyword | 無線網路,視訊串流,實驗平台, | zh_TW |
| dc.subject.keyword | 802.11,802.11e,Wi-Fi,testbed,video streaming,wireless, | en |
| dc.relation.page | 44 | |
| dc.rights.note | 有償授權 | |
| dc.date.accepted | 2009-08-18 | |
| dc.contributor.author-college | 電機資訊學院 | zh_TW |
| dc.contributor.author-dept | 電機工程學研究所 | zh_TW |
| 顯示於系所單位： | 電機工程學系 | |
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| ntu-98-1.pdf 目前未授權公開取用 | 1.65 MB | Adobe PDF |
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