Date Added: Feb 2013
Recent technological developments in Micro-Electro-Mechanical Systems (MEMS) technology, wireless communications and electronics have led to the emergence of large-scale Wireless Sensor Networks (WSNs). One of the key research questions of the wireless sensor networks is issues of having coverage while keeping connectivity. Most of the related researches have concerned coverage, connectivity and energy conservation independently or required sensing/transmission range restrictions. The Quality of Service (QoS) of a Wireless Sensor Network depends to a large extent on the sensing coverage, and its lifetime is determined by its energy consumption. In this paper, the authors present energy efficient, scalable and collision free priority based multiple MAC layer protocol for Wireless Sensor Networks.