Poster Abstract: An Adaptive-Delay Transmission Strategy of a Fixed-Interval Wireless Reporting Application

Low-power wireless technology, i.e., IEEE 802.15.4, consumes less energy and is suitable for battery-powered applications; fixed-interval data reporting is a common characteristic of these applications, e.g., a wireless sensor needs to report its temperature or air quality every minute. However, data-receiving failure occurs frequently because the output power of such wireless technology is low, typically 1 mW in 2.4 GHz IEEE 802.15.4; also, crowd wireless traffic on ISM 2.4 GHz usually has serious radio interference. Meanwhile, data sent from a wireless transmitter but is not received by a receiver is not only wasted energy but also causes potential radio interference with other wireless devices. Based on the observation of radio interference, we proposed an adaptive-delay transmission mechanism for increasing the energy efficiency and the packet delivery ratio of the fixed-interval reporting application. The timing of data reporting is adaptively postponed if the recent transmissions fail. By integrating this method, the number of data packet been sent is reduced by up to 42.7% in a high-interference period; therefore, the power consumption of the wireless transmitter is reduced.