Power-aware adaptive video streaming from the set-top-box to mobile devices

A new-generation digital set-top-box (STB), as a core device of smart home, will provide mobile devices various multimedia services. In this study, we propose a more accurate power consumption model for mobile devices that are receiving video streaming services under the MPEG-DASH framework. The proposed model considers the influence of the encoding parameters specified by the encoder and the CPU frequency and connection throughput of the mobile device. The quality level and bit rate of the streaming video is thus dynamically adjusted, which enables a smooth and more durable video service for mobile users. Experimental results show that the proposed method reduces approximately 10% of power consumption compared to the non-adaptive method.