Abstract
The growth of wireless LANs has brought the expectation for high-bitrate streaming video to wireless PCs. However, it remains unknown how to best adapt video to wireless channel characteristics as they degrade. This paper presents results from experiments that stream commercial video over a wireless campus network and analyze performance across application, network and wireless link layers. Some of the key findings include: 1) Wireless LANs make it difficult for streaming video to gracefully degrade as network performance decreases; 2) Video streams with multiple encoding levels can more readily adapt to degraded wireless network conditions than can clips with a single encoding level; 3) Under degraded wireless network conditions, TCP streaming can provide higher video frame rates than can UDP streaming, but TCP streaming will often result in significantly longer playout durations than will UDP streaming; 4) Current techniques used by streaming media systems to determine effective capacity over wireless LAN are inadequate, resulting in streaming target bitrates significantly higher than can be effectively supported by the wireless network.
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© 2005 Springer-Verlag Berlin Heidelberg
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Li, F., Chung, J., Li, M., Wu, H., Claypool, M., Kinicki, R. (2005). Application, Network and Link Layer Measurements of Streaming Video over a Wireless Campus Network. In: Dovrolis, C. (eds) Passive and Active Network Measurement. PAM 2005. Lecture Notes in Computer Science, vol 3431. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-31966-5_15
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DOI: https://doi.org/10.1007/978-3-540-31966-5_15
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-25520-8
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