A company is deploying wireless access points in a newly renovated conference center that frequently hosts large events with hundreds of attendees. The IT team reports severe congestion and co-channel interference on the existing network, which operates only on the 2.4 GHz and 5 GHz bands. Management wants the new deployment to take advantage of a wide, uncongested spectrum with many non-overlapping channels to support high client density. Which wireless standard should the team specify for the new access points?