Institute of Electrical & Electronic Engineers
Energy efficiency is typically the most important requirement in Wireless Sensor Networks (WSNs). However, in many application domains, additional requirements such as reliability, timeliness and scalability need to be considered as well. As emphasized in previous studies, the IEEE 802.15.4 MAC protocol has severe limitations in terms of performance and energy efficiency, which make it unsuitable for many application scenarios. In this paper, the authors propose an asynchronous adaptive algorithm for periodic data reporting that leverages the 802.15.4 Beacon-Disabled Mode but desynchronizes the access times of different sensor nodes, so as to minimize the collision probability.