A Routing Scheme Based on Autonomous Clustering and P2P Overlay Network in MANETs

Recently, mobile nodes (shortly, nodes) used by users are capable of establishing concurrently cellular (3G/LTE) and WiFi connections have become popular. A mobile ad hoc network (MANET) consists of these nodes and they communicate with each other by multi-hop communication. In this paper, we propose a routing scheme based on the autonomous clustering and P2P overlay network to enhance the packet delivery ratio in case of the low node density. The autonomous clustering is a scheme to divide the network into multiple clusters and manage all nodes in the network. In each cluster, one cluster head that manages the cluster is selected. When the packets cannot be forwarded in the MANET layer, they are forwarded through cellular connections of the cluster heads in the P2P overlay network. In addition, we evaluate the proposed scheme through simulation experiments and confirm the effectiveness of the proposed scheme in terms of the data packet delivery ratio.