RSSI level and a signal strength
The higher the RSSI value, the stronger the signal.
When measured in negative numbers, the number that is closer to zero usually means better signal.
As an example -50 is a pretty good signal, -75 – is fairly reasonable, and -100 is no signal at all.
What is a good WiFi RSSI?
RSSI measures the strength of a radio signal. Any RSSI value lower than -80 dBm is considered poor signal strength. 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.
Why is RSSI a negative value?
Due to the low power levels and the attenuation of free space, an RSSI value is expressed as a negative number. The more negative the number, the weaker the signal strength; conversely the closer the number is to zero, the stronger the signal.
What causes high RSSI?
UL RSSI that is too high will contribute to poor network quality. Interference caused by the high noise floor can lead to frequent dropped calls, call setup failure, and poor voice quality. Improper installation of a service antenna caused high RSSI problems, affecting LTE services.
What is minimum RSSI?
Minimum RSSI (Received Signal Strength Indication) is a value that can be configured on the AP so that a wireless station (STA) is required to meet a minimum signal level, as seen by the AP, to be able to reliably connect/use a particular AP.