ABSTRACT
Devices capable of connecting to multiple, overlapping networks simultaneously are becoming increasingly common. For example, most laptops are equipped with LAN- and WLAN-interfaces, and smart phones can typically connect to both WLANs and 3G mobile networks. At the same time, streaming high-quality video is becoming increasingly popular. However, due to bandwidth limitations or the unreliable and unpredictable nature of some types of networks, streaming video can be subject to frequent periods of rebuffering and characterised by a low picture quality.
In this paper, we present a client-side request scheduler that distributes requests for the video over multiple heterogeneous interfaces simultaneously. Each video is divided into independent segments with constant duration, enabling segments to be requested over separate links, utilizing all the available bandwidth. To increase performance even further, the segments are divided into smaller subsegments, and the sizes are dynamically calculated on the fly, based on the throughput of the different links. This is an improvement over our earlier subsegment approach, which divided segments into fixed size subsegments.
Both subsegment approaches were evaluated with on-demand streaming and quasi-live streaming. The new subsegment approach reduces the number of playback interruptions and improves video quality significantly for all cases where the earlier approach struggled. Otherwise, they show similar performance.
Supplemental Material
- Apple Inc. Mac OS X Server -- QuickTime Streaming and Broadcasting Administration, 2007.Google Scholar
- ars technica. US broadband's average speed: 3.9Mbps. Online: http://bit.ly/6TQROA.Google Scholar
- E. Biersack and W. Geyer. Synchronized delivery and playout of distributed stored multimedia streams. Multimedia Syst. J., 7(1):70--90, 1999. Google ScholarDigital Library
- K. Evensen, D. Kaspar, P. Engelstad, A. F. Hansen, C. Griwodz, and P. Halvorsen. A network-layer proxy for bandwidth aggregation and reduction of IP packet reordering. In IEEE Conference on Local Computer Networks (LCN), pages 585--592, October 2009.Google ScholarCross Ref
- K. R. Evensen, T. Kupka, D. Kaspar, P. Halvorsen, and C. Griwodz. Quality-adaptive scheduling for live streaming over multiple access networks. In The 20th International Workshop on Network and Operating Systems Support for Digital Audio and Video (NOSSDAV), pages 21--26, 2010. Google ScholarDigital Library
- J. Funasaka, K. Nagayasu, and K. Ishida. Improvements on block size control method for adaptive parallel downloading. Distributed Computing Systems Workshops, International Conference on, 5:648--653, 2004. Google ScholarDigital Library
- D. Johansen, H. Johansen, T. Aarflot, J. Hurley, A. Kvalnes, C. Gurrin, S. Zav, B. Olstad, E. Aaberg, T. Endestad, H. Riiser, C. Griwodz, and P. Halvorsen. DAVVI: A prototype for the next generation multimedia entertainment platform. In Proc. ACM MM, pages 989--990, 2009. Google ScholarDigital Library
- D. Kaspar, K. Evensen, P. Engelstad, and A. F. Hansen. Using HTTP pipelining to improve progressive download over multiple heterogeneous interfaces. In Proc. IEEE ICC, pages 1--5, 2010.Google ScholarCross Ref
- A. Miu and E. Shih. Performance analysis of a dynamic parallel downloading scheme from mirror sites throughout the internet. Technical report, Massachusetts Institute of Technology, 1999.Google Scholar
- Move Networks. Internet television: Challenges and opportunities. Technical report, Move Networks, Inc., November 2008.Google Scholar
- P. Ni, A. Eichhorn, C. Griwodz, and P. Halvorsen. Fine-grained scalable streaming from coarse-grained videos. In Proc. ACM NOSSDAV, pages 103--108, 2009. Google ScholarDigital Library
- P. Rodriguez and E. W. Biersack. Dynamic parallel access to replicated content in the internet. IEEE/ACM Trans. Netw., 10(4):455--465, 2002. Google ScholarDigital Library
- B. Wang, W. Wei, Z. Guo, and D. Towsley. Multipath live streaming via TCP: Scheme, performance and benefits. ACM Trans. Multimedia Comput. Commun. Appl., 5(3):1--23, 2009. Google ScholarDigital Library
- F. Wu, G. Gao, and Y. Liu. Glitch-Free Media Streaming. Patent Application (US2008/0022005), January 24 2008.Google Scholar
- A. Zambelli. IIS Smooth Streaming technical overview. Technical report, Microsoft Corporation, 2009.Google Scholar
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