“Wake-on-WLAN”mechanismforcoarse-grained,on-demandpoweron/offofthenetworkingequipmentataremotesite.Thenoveltyalsoliesinourimplementationofaprototypesystemusinglow-power802.15.4-basedsensormotes.Wedescribetheprototype,aswellasitsevaluationonfieldinaWiFitestbed.Preliminaryestimatesindicatethatthepro-posedmechanism...