Multi-Layer Video Broadcasting With Low Channel Switching Delays

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Executive Summary

Modern mobile devices, despite their small sizes, can run many multimedia applications that were only possible to stationary workstations. Mobile devices, however, have quite heterogeneous resources, which poses a challenge to mobile TV broadcast networks. The authors study the problem of broadcasting multi-layer video streams to mobile devices with heterogeneous resources. They propose broadcast schemes that allow each mobile device to selectively receive a few (or all) layers of the complete video streams, and achieve proportional energy saving. They also propose a broadcast scheme that achieves low channel switching delay, which is important to user experience.

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