Wireless network interface cards use received signal strength indication – or RSSI for short – to monitor radio signal strength and check for other devices transmitting on the same channel. If the signal falls below a certain level, most devices will attempt to detect and connect to a new access point with a stronger signal. Many wireless network monitoring tools automatically calculate and display RSSI, but you can also calculate it manually by dividing the signal-to-noise ratio by the network card’s RSSI maximum. Writer Bio
