Device-free and device-bound activity recognition using radio signal strength
Markus Scholz, Till Riedel, Mario Hock, Michael Beigl · 2013
Background: We investigate direct use of 802.15.4 radio signal strength indication (RSSI) for human activity recognition when 1) a user carries a wireless node (device-bound) and when 2) a user moves in the wireless sensor net (WSN) without a WSN node (device-free). We investigate recognition feasibility in respect to network topology, subject and room geometry (door open, half, closed).