Efficient peer-to-peer overlay networks for mobile IPTV services

With recent advance in wireless networks and advent of powerful mobile devices such as smart phones, IPTV services become feasible in mobile platforms. Peer-to- Peer streaming techniques are expected be a promising solution to a large-scale mobile IPTV services by providing low cost and high scalability. On the other hand, the major concern for designing mobile IPTV systems is that mobile devices have the limited battery capacity. To address this concern, in this paper, we therefore develop energy-efficient overlay networks in mobile P2P IPTV systems. In our overlay network for data delivery, mobile peers can reduce the number of data packets and control messages significantly by receiving video data from stationary peers only in a push manner. In our social network for video searching, mobile peers can further reduce a large number of control messages by sending the searching request to only one peer. By extensive simulations, we show that our proposed overlay network structure can decrease the energy consumptions of mobile peers in proportion to the reduced number of data packets and control messages.