The pCell is "synthesized" using all base stations in range I guess. Which base stations that are involved in your pCell changes as you move around ...
Ah - I see, thanks. I guess that's how they can focus the signal so narrowly to 1 cm or so. Looking at the numbers the wavelengths used for 4G are of the order of 1 ft so you wouldn't get much focus from a single aerial of similar dimensions.
