During a civic-center ticket-booth review, an engineer cites a strong RSSI yet ignores a high noise floor. Why is that incomplete for link-quality decisions?
Select an answer to reveal the explanation.
Short Explanation
RSSI without SNR is like bragging about a loud radio while a jackhammer runs beside it — loud isn't the same as clear. You need signal relative to the noise floor. Strong RSSI with a filthy noise floor still makes a lousy link.
Full Explanation
RSSI reflects received signal strength, while SNR compares that signal to the noise floor. High absolute RSSI with elevated noise can still produce inadequate SNR for reliable MCS and low retries. Expert troubleshooting evaluates SNR and spectrum conditions, not RSSI in isolation.