Looking to get a 500mbps+ connection to a building that is over 300 meters away and on the other side of a main road with no clear line of sight. How would someone do this?
A pair of managed layer 2 or 3 switches either side of a 2 or 3 x pair of high power access points using differing channels. If you're not pushed for address space I think you may be able to run layer 2 and aggregate the links using layer two switches, if not it gets a little more complicated having to route traffic, with a routing protocol load balancing across the multiple links. I say multiple as afik the best you will get is 300mbps per pair. Also, may depend how wifi noisy the environment is. I don't believe you'd need any RF clearance for the power outputs of the units, TP Links operate at 500mw for example, but it'd be worth checking just in case.