Hello.
With reference to your post, we recommend Ceiling Mount for all Indoor Ruckus AP's. All ruckus devices have internal SMART ANTENNA's on them and they use BeamFlex which is a Ruckus patent technology.
BeamFlex consists of a smart, compact antenna array with multiple elements, which can be combined in real time to form unique antenna patterns. The advanced BeamFlex system software continually learns the environment with all its hostilities and interference sources, including disruptive RF conditions, numerous communicating devices, network performance issues, and application flows. Then, it selects the optimum antenna pattern for each communicating device in real time, while actively mitigating interference and minimizing noise to nearby networks and devices.
Unlike omni-directional antennas that radiate signals in all directions, BeamFlex directs transmit energy towards the best path to the receiving device. And unlike fixed-positioned directional antennas, BeamFlex dynamically configures its "beam" on a per-station, per-packet basis, to achieve omni-directional coverage.
Hope this answers your questions. all the best.