Networking Investigate

Cross-Layer Optimization of Video Streaming in Single-Hop Wireless Networks

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Executive Summary

Video streaming over wireless networks is getting very popular because of the high bandwidth and the support of quality of service offered by recent wireless standards, such as IEEE 802.11e. The authors consider optimizing the quality of video streaming in single-hop wireless networks that are composed of multiple wireless stations. Their optimization problem controls parameters in different layers to optimally allocate the wireless network resources among all stations. Their address this problem in two steps. First, they formulate an abstract optimization problem for video streaming in single-hop wireless networks in general. This formulation exposes the important interaction between parameters belonging to different layers in the network stack. Then, they instantiate and solve the general problem for the recent IEEE 802.11e WLANs, which support prioritized traffic classes.

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