The next major spectrum challenge is working out global roaming, especially on spectrum below 1GHz, Kerans said.
"Economies will grow if people can move freely with their communication devices, and that's a huge challenge for spectrum managers and particularly the ITU [International Telecommunication Union] and the three regional groups," he said.
"The only way we'll really, truly have a single global economy where everybody benefits is for these groups and their constituent countries to get together -- actually work together, instead of coming up with their own plans."
Spectrum is no trivial matter, he said.
"We've worked out that the average person uses spectrum about 143 times a day, from the automatic car-door opener to the radio and mobile phone--even to the speeding ticket you get because a policeman tracked you with a radar gun."
"It may not be all that exciting, but today people could not live without radio spectrum, and managing it is getting harder and harder."
Sign up for Computerworld eNewsletters.