Abstract

Video streaming over wireless networks is challenging due to node mobility and high channel error rate. In this paper, we propose a multi-source video streaming (MUVIS) system to support high quality video streaming service over IEEE 802.1l-based wireless networks. We begin by collocating a streaming proxy with the wireless access point to help leverage both the media server and peers in the WLAN. By tracking the peer mobility patterns and performing content discovery among peers, we construct a multi-source sender group and stream video using a rate-distortion optimized scheme. We formulate such a multi-source streaming scenario as a combinatorial packet scheduling problem and introduce the concept of asynchronous clocks to decouple the problem into three steps. First, we decide the membership of the multisource sender group based on the mobility pattern tracking, available video content in each peer and the bandwidth each peer allocates to the multi-source streaming service. Then, we select one sender from the sender group in each optimization instance using asynchronous clocks. Finally, we apply the point-to-point rate-distortion optimization framework between the selected sender-receiver pair. In addition, we implement two different caching strategies, simple caching simple fetching (SCSF) and distortion minimized smart caching (DMSC), in the proxy to investigate the effect of caching on the streaming performance. To design more realistic simulation models, we use the empirical results from corporate wireless networks to generate node mobility. Simulation results show that our proposed multi-source streaming scheme has better performance than the traditional server-only streaming scheme and that proxy-based caching can potentially improve video streaming performance.

주제어

#Caching strategies   #multi-source video streaming   #rate-distortion optimized packet scheduling  

참고문헌 (26)

1. T. Wang, H. Fang, and L. Chen, 'Low-delay and error-robust wireless video transmission for video communications,' IEEE Trans. Circuits Sys. Video Technol., vol. 12, no.12, Dec. 2002 
2. T. Nguyen and A. Zakhor, 'Protocols for distributed video streaming,' in Proc. IEEE ICIP 2002, Rochester, NY, USA, Sept. 2002 
3. A. Dan and D. Sitaram, 'A generalized interval caching policy for mixed interactive and long video environment,' in Proc. Multimedia Computing Networking Conf., San Jose, CA, USA, Jan. 1996 
4. Y. Wang et al., 'A network conscious approach to end-to-end video deliv­ery over wide area networks using proxy servers,' in Proc. IEEE INFO­COM, 99, New York City, USA, Apr. 1999 
5. A. C. Begen, Y. Altunbasak, and M. A. Begen, 'Rate-distortion optimized on-demand media streaming with server diversity,' in Proc. IEEE ICIP 2003, Barcelona, Spain, Sept. 2003 
6. A. Majumdar et al., 'Multicast and unicast real-time video streaming over wireless LANs,' IEEE Trans. Circuits Sys. Video Technol., vol. 12, no.6, June 2002 
7. A. Dan and D. Sitaram, 'Butfer management policy for an on-demand video server,' Tech. Rep. 19347, IBM Research, Jan. 1993 
8. S. Floyd et al., 'Equation-based congestion control for unicast applica­tions,' in Proc. ACM SIGCOMM 2000, Stockholm, Sweden, Aug. 2000 
9. P. A. Chou and Z. Miao, 'Rate-distortion optimized streaming of pack­etized media,' Tech. Rep. MSR-TR-2001-35, Microsoft Research, Feb. 2001 
10. J. M. Almeida, D. L. Eager, and M. K. Vernon, 'A hybrid caching strategy for streaming media files,' in Proc. Multimedia Computing Networking Conf., San Jose, CA, Jan. 2001 
11. J. Chakareski and B. Girod, 'Server diversity in rate-distortion optimized media streaming,' in Proc. IEEE ICIP 2003, Barcelona, Spain, Sept. 2003 
12. S. Krishnamachari et al., 'Video streaming over wireless LANs: A cross­layer approach,' in Proc. Packet Video Workshop, Nantes, France, Apr. 2003 
13. M. Hefeeda et al., 'Promise: Peer-to-peer media streaming using collect­cast,' in ACM Int. Conf Multimedia, Berkeley, California, USA, Nov. 2003 
14. D. Li et al., 'Proxy-driven rate-distortion optimized video streaming over wireless network using asynchronous clocks,' in Proc. Packet Video Work­shop, Irvine, CA, Dec. 2004 
15. Z. Miao and A. Ortega, 'Proxy caching for efficient video services over the internet,' in Proc. Packet Video Workshop, New York City, USA, Apr. 1999 
16. M. Balazinska and P. Castro, 'Characterizing mobility and network usage in a corporate wirelss local-area network,' in Proc. MobiSys 2003, San Francisco, CA, USA, May 2003 
17. D. Li et al., 'Joint server/peer receiver-driven rate-distortion optimized video streaming using asynchronous clocks,' in Proc. IEEE ICIP 2004, Singapore, Oct. 2004 
18. G. Cheung, C. Chuah, and D. Li, 'Optimizing Video Streaming Against Transient Failures and Routing Instability,' in Proc. IEEE ICC 2004, Paris, France, June 2004 
19. R. Rejaie et al., 'Multimedia proxy caching mechanism for quality adaptive streaming applications in the internet,' in Proc. IEEE INFOCOM 2000, Tel Aviv, Israel, Mar. 2000 
20. A. Gurtov and S. Floyd, 'Modeling wireless links for transport protocols,' ACM SIGCOMM Computer Commun. Review, pp. 85-96, Apr. 2003 
21. X. Zhang et al., 'Donetlcoolstreaming: A data-driven overlay network for live media streaming,' in Proc. IEEE INFOCOM 2005, Miami, FL, USA, 2005 
22. R. Tewari et al., 'Caching in bandwidth and space constrained hierarchi­cal hyper-servers,' Tech. Rep. CS-TR-96-30, Department of Computer Sciences, University of Texas at Austin, Jan. 1997 
23. S. Sen, J. Rexford, and D. Towsley, 'Proxy prefix caching multimedia streams,' in Proc. IEEE INFOCOM'99, New York City, USA, Mar. 1999 
24. J. Chakareski, P. A. Chou, and B. Girod, 'Computing rate-distortion opti­mized policies for hybrid receiver/sender driven streaming of multimedia,' in Proc. Asilomar Conf Sig. Sys. Computers, Pacific Grove, CA, USA, Nov. 2002 
25. T. Yoshimura et al., 'Rate and robustness control with rtp monitoring agent for mobile multimedia streaming,' in Proc. IEEE ICC 2002, New York City, USA, Apr. 2002 
26. X. Xu et al., 'A peer-to-peer video-on-demand system using multiple description coding and server diversity,' in Proc. IEEE ICIP 2004, Singa­pore, Oct. 2004 

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