Grid Based Opportunistic Geocast in Spatially Separated Wireless Sensor Networks

Geocast is a one to many communication, where a packet is delivered to a set of spatially contagious nodes. In military and disaster management application it is a primitive communication service. We propose a Grid based Opportunistic Geocast (GOG) for spatially separated wireless sensor networks with a three tier architecture composing sensor nodes, Mobile nodes (MN) and Data MULEs (DM) with different communication and motor characteristic. MN follow predefined pattern to relay the data, sensed by sensors within the sub network. DM follows a bus pattern visiting every region and relay the data opportunistically across the sub network. In every sub network, an alley node (AN) is elected to forward the data to DM. Simulation shows that the GOG intra and inter routing protocol, reduces control packets and efficiently forwards data packets. The modeling along 2394 Selvi Ravindran, P. Narayanasamy and V. Vetri Selvi with simulation results shows that our predictive routing performs better than random broadcast.