Epidemic Collaborative Replication for Maintaining File Sharing Reliability in Mobile Peer-to-Peer devices

摘要

Mobile Peer-to-Peer devices are characterized by bounded resource sharing reliability. Since mobile hosts move freely, network partitioning occurs frequently, and thus data accessibility is relatively lower than that in conventional fixed networks. Due to the asymmetry in wireless communication and the scarceness of wireless resources, the use of infrastructureless wireless networks as a mean of file sharing is not always successful. This paper proposes an approach for reliable file sharing based on the advantages of epidemic selective dissemination through fixed and mobile Infostations. The proposed scheme combines the strengths of both autonomic gossiping and hybrid Infostation concept and attempts to fill the gap between user mobility and reliable file sharing for mobile peer to peer users. Facing the problem of flooding this method successfully enables end to end reliability by forwarding requested packets to epidemically 'selected' users in the network. Examination through simulation is performed for the offered reliability by the epidemic collaborative replication scheme, showing the grade of robustness in file sharing reliability among mobile peers.