A multi-radius ring-based multi-hop clustering routing algorithm for agricultural monitoring system

In this paper, we present a Multi-radius Ring-based Multi-hop Clustering Routing Algorithm (MRMCRA) in wireless sensor networks for agricultural monitoring system. Several concentric rings of different radius are created so that the whole area is divided into different subareas. The radius of each ring is carefully selected to balance the power consumption. Each cluster head (CH) is required to select its next hop in the inner subarea. In this process, the remaining battery capacity, distance from next hop to the base station and distance from current CH to the next CH are taken into consideration and a fuzzy logic system is applied to the decision making. Simulation results show that this protocol optimizes the data transmission path, reduces the energy consumption and can extend the network lifetime as well.