I’m don’t consider myself a wireless expert but I’m confident that using IEEE WiFi for location services is a bad idea. Devin Akin has the same view. Use BLE tags.
If your organization is thinking about location services, PLEASE do yourself (and us Wi-Fi architects) a favor and do not try to do location services over the Wi-Fi. It sucks, it’s expensive, and it will very likely wreck your Wi-Fi design. Just because you can do something doesn’t mean you should. BLE is a better solution.
Did I Mention That Location Services Is the End-game? – Divergent Dynamics : http://divdyn.com/did-i-mention-that-location-services-is-the-end-game/