A method is provided for operating a station for simultaneous communication over: a first, Frequency Division Duplex (FDD) Radio Access Network (RAN) using a first carrier signal; and a second, Time Division Duplex (TDD) RAN using a second carrier signal at a higher frequency than a frequency of the first carrier signal, wherein transmissions from the station using the first carrier signal cause interference to reception at the station over the second, TDD RAN. The method comprises aligning a timing of transmissions from the station over the first, FDD RAN to a timing for transmissions from the station over the second, TDD RAN.