DFS

Many multi-AP sites do not suffer from weak signal. They suffer because APs hear each other too well. Every room has an AP, phones show full bars, but speed jumps around and voice or video stutters. The issue is often not AP count. It is channel, power, and coverage overlap being designed separately.

Wi-Fi channel planning is not about making every spot see the strongest signal. It is about helping APs and clients share airtime with less contention and less interference.