A dynamic MAC for Wireless Visual Sensor Networks

The growing trend towards multimedia communications over wireless sensor networks has led to the emergence of Wireless Visual Sensor Networks (WVSNs). Specially, video surveillance and security applications have received substantial attention due to terrorist and security threats of the last years. One of the biggest challenges in WVSNs is guaranteeing delay bound delivery of data to the destination. The energy and bandwidth constraints of sensor nodes, make this task even more daunting. This paper proposes a dynamic MAC protocol, that employs a duty cycle scheme, to achieve end-to-end delay guarantees (among heavy traffic load) along with energy conservation.