Mobile media distribution using segment scheduling for Opportunistic Regional Clusters

Recently several P2P-based mobile media distribution systems including MOVi (Mobile Opportunistic Video on demand) are proposed as a complimentary solution for mobile VoD services. In this paper, we propose a three-step segment-based scheduling algorithm incorporating the notion of ORC (Opportunistic Regional Clusters) for mobile media distribution. By intelligently designing a centralized scheduling environment that leverages both downlink and opportunistic P2P (peer-to-peer) links, we attempt to increase the efficiency of segment-based scheduling with the support of clustering. The proposed segment-based scheduler utilizes the clusterized version of mobile node attributes for urgency (e.g., remaining buffer time) and segment scarcity (e.g., unavailability within neighboring nodes). With the NS-2 simulation of proposed scheduling scheme against the non-clustered one, we demonstrate up to 8 percent performance improvement.