When we upgrade the controller and install our new 3702i APs will there be any difficulties when roaming from our
3502is,3602is to our 3702is?
Word or warning: What kind of PoE power do you have. If you want to install 3700 it is strongly recommended your switch is capable of delivering up to 20.0w PoE to the switchport where the 3700 is installed.
You can power up the 3700 with just 15.4w PoE but this means that you'll just get lower data rates.