A Grid-Based Geocasting Protocol for wireless sensor networks

In a wireless sensor network (WSN), usually there will be a sink to gather data and many sensor nodes are responsible for monitoring data, so users can know well about the situation in that field. In this paper, we proposed a Grid-Based Geocasting Protocol for WSNs called GB-FERMA. Based on grid structure, we utilize the theorem of Fermat point in order to find an optimal junction point branching into each region. By using this shared path, an interest data dissemination scheme can be performed very efficiently. Simulation result shows that with our GB-FERMA, it can slow down the rate of energy consuming and therefore distributes the energy consumption evenly.