It has to do with the e-commerce offerings we plan to have on 4G. It has a lot to do with the voice and data and commerce-like services—or interoperability.
As a typical example, if I am trying to buy something at a store and I don't have my significant other with me in a store, in the future I may wish to have an avatar of myself with my suit on, and I may wish to video share this with my wife, for example. She may not like the colour or the stripes, or what have you, but I need that bandwidth to be able to transmit the picture of myself—and of course, I'll look better in the avatar.