Bluetooth Low Energy (BLE) Received Signal Strength Indicator (RSSI) Data for Proximity Detection in COVID-19 Electronic Contact Tracing
NIST carried out a comprehensive BLE RSI data collection campaign under various operational scenarios.  In some scenarios, the transmitting and receiving BLE radios were in line-of-sight (LOS) or each other and in others they were in non-line-of-sight (NLOS).  The distance between the radios were measured and recorded …