Resources of two frequency division duplex (FDD) frequency bands at a distance from each other are allocated for transmissions by a time division duplex (TDD) transmission method. The resources in the first FDD frequency band are allocated for FDD transmissions in the uplink and for TDD transmissions...http://www.google.de/patents/US7773635?utm_source=gb-gplus-sharePatent US7773635 - Method, network device and user station for allocating resources to frequency bands of radio communication system