On the Benefits of Cooperative Video Broadcast Over WMANs and WLANs

Download Now Date Added: Oct 2009
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The authors study the problem of broadcasting video streams over a WMAN to many mobile devices. They propose to form a cooperative network among mobile devices that receive the same video stream, and share received video data over a WLAN. They analytically show that the proposed system outperforms current systems in terms of energy consumption and channel switching delay. The trace-based simulation results show that the proposed system: achieves as high as 70% of energy saving gain, outperforms current systems with only two cooperative mobile devices, reduces channel switching delay by up to 98%, is robust under device failure and quickly reacts to network dynamics, and uniformly distributes the load on all cooperative devices.