Geographic and Energy aware Epidemic Strategy for Mobile Opportunistic DTN

Abstract

This paper presents a novel data dissemination strategy called Geographic Energy-aware Epidemic Routing (GEER) in DTN network. This routing scheme tries to consider the residual node energy and degree centrality to dynamically select the number of nodes where forwarding data and it tries to preserve buffer space reducing the TTL of data sent on nodes with higher degree centrality. A novel estimation of node density differentiated for geographic area is proposed to improve the data forwarding and a buffer data discarding policy has been applied when network becomes congested. GEER has been compared with Energy Aware Epidemic Routing (EAER) and EpSoc routing scheme in terms of Data Packet delivery ratio, overhead and energy consumption.