Comment Been done for years (Score 1) 104
Xirrus have been doing this for years - see http://en.wikipedia.org/wiki/Xirrus or http://www.xirrus.com/
They put 8 (or more) access points into a single unit, each with a directional antenna covering a segment of the room or venue. I looked at their product at a trade show or conference once (don't remember which) but it was way overkill for the spaces we had at the time which were separated with heavy reinforced concrete walls and floors, so needed an access point for each area.