<p>A method for sending signals is disclosed in the present invention. When a Time Division Duplex (TDD) frequency band corresponding to a TDD system and a Frequency Division Duplex (FDD) frequency band corresponding to a FDD system are adjacent, a guard band is set between the TDD frequency band and the FDD frequency band; during the period that sending directions of signals in the TDD frequency band and the FDD frequency band are consistent, the FDD system or TDD system utilizes the guard band to send the signals; during the period that sending directions of signals in the TDD frequency band and the FDD frequency band are not consistent, none of the signals is received/sent in the guard band. Two kinds of signal sending devices are disclosed in the present invention at the same time. The utilization ratio of frequency resources can be better improved by applying the method and device of the present invention.</p>
