Definitely very interesting technique but it sounds like the big challenge will be scaling up to large numbers of base stations and mobile (vs. semi-stationary) clients. Inverting the matrices mentioned in the patent and continually updating the parameters to create the interference bubble around the roving antenna is going to take a lot of processing horsepower. As mentioned in another comment, getting reasonable battery life out of a mobile device using this technology is going to be tricky.

I didn't read the whole patent, is changing environment (e.g. cars passing by) taken into account? I imagine that multi-path reflections off of neighboring objects would be too dynamic to update in real time.