Schedule-based P2P network organization

In this article, we propose an approach to improve peer-to-peer (P2P) backup protocol. The main idea of PIP backup systems is to use the shared storage space available on each peer in order to store data replicas of each data. These solutions become popular to ensure data availability but several limits quickly appear because of the lack of collaboration between peers. In order to resolve some existing limits related to the large scale highly dynamic context of P2P networks, we define a set of schedules for each peer and for each group of collaborating peers to model their availability and needs. Our approach based on a specific clustered organization of the network allows improving the interaction of the collaborating peers and the definition of a group satisfaction metric which allows efficiently handling and maintaining the peer groups. Indeed, the backup process based on collaborating peers ensures the efficient usage of peer resources. Performances are validated through simulations.