Opportunistic communication based on Random Walk Mobility Model for Building Rescue in ad hoc networks

Enough instant information about the fire scenes is necessary and important for fire fighting. However, communication among fire fighters is often interfered heavily with by environment factors like smog and fire. In order to help rescuers exchange information in such awful circumstances, we put forward an idea of Opportunistic Communication based on Random Walk Mobility Model for Building Rescue (OCRWBR) in ad hoc networks. Fire fighters are divided in groups and the amount of groups on every floor can alter according to specific conditions. We discuss the communication probabilities of two neighbor groups on the same floor and the adjacent floors, and then manage to increase the communication odds based on the relationships among communication radius, constructions' structure and the deployment of fire fighters. The simulation results show that the communication probability varies directly with the space of a floor and the amount of groups. OCRWBR works on communication feasibility in weak-connected even unconnected networks and provides theoretic bases for improvement in network connectivity.