Reliable Cost-based Data-centric Routing Protocol forWireless Sensor Networks

The resource limitations of wireless sensor networks (WSN), especially in terms of energy, require novel and collaborative approach for the wireless communication. In this paper we focus on the dynamic aspects and present a new reliable cost-based data-centric routing algorithm for such dynamic WSNs. Current research in this area generally assumes a rather static network, leading to a strong performance degradation in a dynamic environment A network wide reflooding of messages is the common solution to network topology changes. The situation gets worse when the data sink moves, when a stable network is hardly able to form. In our research we try to maintain the communication when sensors move, such that less energy is used to re-setup the network. Moreover, event mobility poses a great pressure on the WSNs. We have designed the routing protocol to route message intelligently to reduce the effect of event mobility. Simulation results show that our approach to data-centric routing for WSNs benefits clearly from the global-local paradigm we are able to use. In a static network, our approach increases the network reliability with at least 25%. And in a dynamic topology, the local recovery approaches of our protocol clearly outperform the traditional protocol in reliability, while the energy consumption is less than 50%