A new approach on wake-up radio (WUR) based on active RFID
Irving Souza Lima, Luiz Carlos Kretly · 2017 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems (COMCAS) · 2017
A very serious concern that has been getting more attention these days due to the Internet of Things - IoT - is the energy saving on battery-powered sensors. There are techniques that try to extend the lifetime of this type of sensor, some related to duty cycles in which the sensor wakes-up periodically and checks if it should take some action, this approach still has a long time of idle listening wasting battery unnecessarily. There are also the techniques known as WUR (wake-up radio) that wake up the radio “on-demand”, that is, a device of lower power is responsible for triggering the main radio when it is necessary, thus saving a lot of energy. The use of RFID for this purpose is not new, but has always brought the problem of low reach (solutions reaching not up to 5 meters), the proposed solution aims to find a balanced solution, between energy savings and radio signal reach, that works at the same scenario as IEEE802.11 networks and using technology of active RFID to identify the packets and wake the main device at the appropriate time.