@ARTICLE{Ruz07Sen, AUTHOR = {A.G. Ruzzelli, R. Jurdak and G.M.P O'Hare}, TITLE = {On the RFID wake-up impulse for multi-hop sensor networks }, JOURNAL = {In Proceeding of In Proceeding of ACM Workshop on Convergence of RFID and Wireless Sensor Networks and their Applications, in conjunction with ACM SenSys 2007, Sydney, AU}, YEAR = {2007}, month = {November 6}, abstract = {Communication protocols for wireless sensor networks reduce the energy consumption by duty cycling the node activity and adopting a periodic sleeping scheduling. This approach often results in idle listening and therefore energy dissipated for listening to a channel free from packet transmitted. Duty cycling trades-off energy consumption due to idle listening and high end-to-end delay. Proposed solutions mitigate this issue for example through extra low-power radio components (wake-up radio) that listen to the radio and wake-up the node if some channel activity is sensed. These extra components also consume some energy to listen to the channel. In contrast, we propose an on-demand wake-up capability, namely RFIDimpulse, which is achieved through using an off-the-shelf battery- less RFID tag attached to each sensor node that is also provided with RFID reader capability. Because modern RFID techniques can trigger all the neighbouring tags at once or pinpoint a particular tag, RFIDimpluse provides both unicast and multicast capability. RFIDimpulse allows event- driven communication and eliminates node idle listening. }, }