How accurate is BLE RSSI?

How accurate is BLE RSSI?

Accuracy data is obtained from beacon devices for indoor positioning taken from various mobile devices with BLE support. Thhis study uses RSSI data to determine distances without any filter in order to present raw performance of the devices. Our result shows various accuracy from 0.07 meters and up to 7.81 meters.

How do you calculate the distance from the RSSI value of a BLE beacon?

Distance = 10 ^ ((Measured Power -RSSI)/(10 * N))

Can beacons detect distance?

For generalization purposes, beacon proximity detection is split into three distance categories; immediate, near and far. Immediate means proximity within 0.6 meter away, near being within about 1-8 meters, while far is beyond 10 meters and up to 40 meters if nothing blocks the signal.

What is RSSI in BLE?

RSSI stands for Received Signal Strength Indicator. It is the strength of the beacon’s signal as seen on the receiving device, e.g. a smartphone. The signal strength depends on distance and Broadcasting Power value. The further away the device is from the beacon, the more unstable RSSI becomes.

What is a good RSSI for WIFI?

The manufacturer recommends an RSSI between -65 and -41, and warns about possible video issues if constantly at -60.

How does ble measure distance?

This solution uses (Bluetooth Low Energy) BLE Received Signal Strength Indication (RSSI) to measure the distance between the receiver and the transmitter (scanner and advertising device) . It is possible to increase accuracy by repeatedly scan the RSSI values and create an average over a fixed determined period.

What is a good RSSI level?

RSSI level and a signal strength

What is the range for RSSI?

RSSI values between -50 to -70 dBm are examples of ranges in which the clients would see the AP or vice versa. But if the wireless client is in very close vicinity to the AP it can receive signals stronger than -50 dBm as well, which is still OK.