Beamforming Via Directional Array
There is a major difference between 'on chip' beamforming included in 802.11n and 802.11ac standards and Ruckus's directional antennae arrays. The conventional 'on chip' uses signal phasing and omni directional antennaes and may under best circumstances give 1-3dB gain if the client is in just the right spot. The directional antennae array has multiple directional antennae elements and some very nifty RF management software which picks the most favourable pair of elements for each client transmission, resulting in +7dB gain.
This results in very significant performance improvement, particularly at range. In a flood coverage deployment you need less points to cover the same area - Ruckus claim up to 40% less.
Whilst I won't blindly recite the sales mantra, we regularly install and test/survey WLANS from all the established manufacturers. Our Ekahau site survey and Chanalyzer tests consistently show that Ruckus system performs significantly better.
Pantentable - Yes it is and has been, and as a technology innovator Ruckus hold many other patents reflecting its own investment in R&D. As opposed to many of the bigger 'manufacturers' who acquire and sit on the intellectual property of others.