said by BiggA:
It looks like they're trying to get it up to full power by giving the satellite radio guys 5mhz on either side of their band.
That's it, give up using the unpaired C and D blocks so that the paired (5 MHz + 5 MHz each) A and B blocks can be used. AT&T is also asking the FCC to consider giving them permission to use the WCS spectrum just as downlink spectrum while using something else (perhaps Lightsquared spectrum) for the uplink. Uplink spectrum is generally less of an interference concern.