Method and apparatus for occupying unauthorized frequency band channel

The invention relates to a method and an apparatus for occupying an unauthorized frequency band channel and avoids the situation that a state of an occupied unauthorized frequency band is misjudged. According to one embodiment of the invention, the method for occupying the unauthorized frequency band channel comprises the steps that: user equipment receives a power increase ratio, which is determined by a secondary cell base station, of a reference signal transmission unit of the unauthorized frequency band channel; the user equipment receives a sub-frame in the unauthorized frequency band channel, which is sent out by the secondary cell base station and is allocated under a reference signal transmission unit level power; the user equipment decodes the power increase ratio; and the user equipment processes the sub-frame by using the power increase ratio.