Mobility

Video Broadcasting to Heterogeneous Mobile Devices

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Executive Summary

The authors study the problem of broadcasting multiple scalable video streams to heterogeneous mobile devices, which have limited energy budgets. They show that scalable video streams should be broadcast in a different manner than nonscalable streams; otherwise energy of mobile devices could be wasted. They propose an efficient broadcast scheme for mobile TV networks that explicitly supports heterogeneous mobile devices, and they show its correctness as well as performance in terms of energy saving. They implement the proposed scheme in a real mobile TV testbed to evaluate its performance. Their results indicate that, with the proposed broadcast scheme, significant energy savings can be achieved by different heterogeneous devices.

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