Microwave transmission. One catch, tho - the beam gets out of alignment with the receiving station, and you get lots of cooked stuff down below. The technology required to operate such an orbital construct is not exactly ‘off the shelf’.
Hmmm, it could easily be turned into a weapon ( sounds like a James Bond movie ). Better not piss off Apu when talking to him on tech support. "Now Mr. American. I see on my monitor that your GPS is ......You have been berry, berry rude to me. Have a nice day !! "