wireless IP has been around for quite some time - (Score 1)

By way of Amateur (Ham) Radio. One of the best resources you can find about the current state of the technology is located at:
http://www.tapr.org/tapr/html/pktf.html

I have been using packet radio to access the internet since about 1989. It was slow access back then - and is still slow now - but with the increasing popularity of spread-spectrum, it's getting a bit more useable for what I use it for - that being remote control of items and telemetry.