An efficient structured P2P overlay over MANET

In traditional structured P2P file sharing network, a peer establishes and maintains connection with a number of neighbor peers according to its ID. This would lead to mismatch between the overlay and physical network in mobile ad hoc network (MANET) due to unique characteristics of MANET. We propose an approach to construct an efficient structured P2P overlay over MANET using underlying OLSR routing. One of the peers in the P2P network is used as a root-peer to connect all peers. Each peer maintains connection with physically closer neighbor peers such that it can reach the root-peer. The peer constructs a minimum-spanning tree consisting of itself, its directly connected neighbor peers and 2-hop away neighbor peers to remove far away redundant links and to build an overlay closer to the physical network. This structure of interconnection among the peers is used to systematically distribute the identifier space among the peers for which a peer is responsible. We can show by simulation that our approach performs better in comparison with the existing approach.