Dual-radio discovery and ranging for infrastructure-less social distancing with Janus
Timofei Istomin, Elia Leoni, Davide Molteni, Amy Lynn Murphy, Gian Pietro Picco · 2020
Devices to support social distancing must be energy-efficient and accurate. Bluetooth Low Energy (BLE) meets the first criteria but falls short on the latter. Ultra-wideband (UWB) measures distances with <10 cm error but with relatively high consumption. Therefore, we built Janus, a dual-radio protocol that uses the strengths of each.