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Modern mobile devices have become an important part of our daily life but the performance of multimedia applications on mobile devices still suffers from the constrained energy supply and shared cellular link bandwidth. In this work, we design a cooperative energy-efficient P2P streaming system to achieve better Quality-of-Experience for a mobile user. First, we formulate and analyze the problem of Maximizing the Lifetime for a mobile P2p Streaming system (MLPS). Then, our distributed bitrate-aware entrust algorithm, jointly considering characteristics of mobile devices and steaming services, is proposed. The simulation results show our scheme can improve the system lifetime by 8 times, and provide more than 2 times throughput than the conventional 3G system does. W Streaming Server densities.Figure 1. System architecture 2013 IEEE International Conference on Green Computing and Communications and IEEE Internet of Things and IEEE Cyber, Physical and Social Computing 978-0-7695-5046-6/13 $26.00

Modern mobile devices have become an important part of our daily life but the performance of multimedia applications still suffers from the constrained energy supply and communication bandwidth of the mobile devices. In this work, we develop an energy-efficient streaming system for mobile hotspots to achieve better Quality-of-Experience. Our main idea is (a) to avoid redundant 3G transmissions as well as reduce the usage of 3G links for those low residual-energy users, and (b) to enable nearby mobile users cooperatively to share the downloaded data via short-range interfaces. The experiment results shows our scheme can improve the system lifetime by 27%, and provide better throughput as well as lower loss rate than conversional 3G systems do.

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