a mobile terminal is provided in the present invention , comprising : a channel state information feedback calculating unit configured to calculate a channel state information feedback between the mobile terminal and a serving cell of the mobile terminal and those between the mobile terminal and all cooperating cells ; a channel quality information feedback calculating unit configured to calculate a channel quality information feedback for the serving cell of the mobile terminal ; and a transmission unit configured to transmit the channel state information feedbacks and the channel quality information feedback to the serving cell . the present invention greatly improves the performance of a lte - a system and greatly reduces feedback overhead . the present invention is a scalable feedback solution and may be flexibly applied to various coordinated multipoint transmission scenarios .