Wireless communication system, and device and method in wireless communication system

Disclosed are a wireless communication system, and a device and method in the wireless communication system. The device comprises: a channel information acquiring unit, configured to acquire first channel information about a channel between a first communication device and a second communication device; a pre-coding unit, configured to pre-code a first reference signal based on the first channel information; a measurement configuration information generating unit, configured to generate measurement configuration information for the second communication device, wherein the measurement configuration information comprises measurement instructions on the pre-coded first reference signal; and a control unit, configured to control, based on the second communication device, according to the measurement configuration information and aiming at second channel information fed back by the pre-coded first reference signal, transmission of a data signal. According to the embodiments of the present invention, interference between user equipments can be effectively removed, the operation complexity is reduced, and the whole performance of the system is optimized.