Study and simulation of QOS-based routing for wireless sensor networks based on OPNET

This paper addresses the QOS routing, key technology to provide differential services and utilize the whole resource effectively for wireless sensor networks. Based on the analyzing of QOS routing for wireless sensor networks, a new distributed QOS routing algorithm, according to the minimum node energies simulation model, is presented. Using OPNET we make some simulation of this model. By analyzing the results we find this proposed algorithm can provide differential services both for real-time traffic and best-effort traffic. Besides, it can balance the energy and cost on the whole network and prolong the network lifetime by up to 500%.