A distributed connection admission control strategy for wireless multimedia sensor networks

Abstract

Wireless Multimedia Sensor Networks (WMSN) is an evolution of typical Wireless sensor networks, where in addition to scalar data, devices in the network are able to retrieve video, audio streams, and still images, from the environment. Providing QoS guarantees for the multimedia traffic in WMSNs, requires sophisticated traffic management and admission control procedures. In this paper, taking multiple parameters into account, we propose a novel connection admission control scheme for this multimedia traffic. The proposed scheme is able to determine if a new flow can be admitted in the network considering the current link states and the energy of the nodes. The decision about accepting is made in a distributed way, without trusting a central entity to take this decision. In addition, our scheme works like a plug-in, being easily adaptable to any routing and MAC protocols. Our simulation results show the effectiveness of our approach to satisfy QoS requirements of flows and achieve fair bandwidth utilization and low jitter.