Survey on energy efficiency of clustered routing in wireless sensor network

When nodes are organized as clusters, data packets can be transmitted from cluster members to head in either single hop or multi-hop communication mode. Using maximum energy dissipation of cluster members as evaluation criterion, energy efficiency of these two modes is researched. The conclusion was come to that the optimal communication mode depends on channel path loss. Taking the uneven energy consumption caused by solely single hop or multi-hop mode into consideration, a hybrid communication mode that nodes alternate between single hop and multi-hop mode with certain probability is proposed. The simulation result verifies that hybrid mode provides the best energy efficiency as well as even energy dissipation.