An integrated Retrieval and Pre-fetching algorithms for Segmented Streaming in Mobile Peer-to-Peer Networks

In contrast to conventional P2P systems in wired networks that consist of static peers, mobile P2P are subjected to the limitations of battery power, wireless bandwidth, and the dynamically changed network topology. Challenges arise in how to improve the source discovery and data replication. In this paper, we talk about an integrated searching and prefetching algorithm for the segmented streaming in mobile peer-to-peer (P2P) Networks. Firstly, each stream is divided into several segments and each segment is assigned a priority based on theory analyses. Then, for a given segment, the different number of queries is sent to search it and the length of the query for this segment is also dynamically decided by the segment-priority to avoid the unnecessary overhead. Next, along the path where a stream is sent from the requester node, parts of the nodes on this path are selected to pre-fetch the requested segment to reduce the user delay for the next possible request. Finally, Simulation results show that better performance than the conventional methods can be achieved