A hierarchical architecture for energy-efficient information dissemination in sensor networks

Energy efficient data dissemination from sources to sinks is one of the main functions in sensor networks. In this paper, a hierarchical architecture for information dissemination is proposed which clusters the nodes according to their position approximation. In the proposed architecture, query messages are broadcasted to every node by sink to eliminate the flooding cost. Data aggregated at cluster-head node are relayed to sink by intermediate cluster-heads and gateways in a multi-hop fashion. We present the clustering and routing protocols and evaluate the performances by analysis and simulation which illustrate that this architecture can reduce the energy consumption and improve the query success ratio as well.