Coordination system of power of downlink control channel and method thereof

The invention provides a coordination system of power of a downlink control channel and a method thereof. The method comprises the following steps: a service eNB of a terminal sends PDCCH (physical downlink control channel) information of the terminal to one or more adjacent eNBs, according to the PDCCH information of the terminal, the adjacent eNBs which receive the PDCCH information determine whether physical resource occupied by a PDCCH of the terminal is conflicted with physical resource occupied by a terminal served by the adjacent eNBs or not, if so, the adjacent eNBs give following adjustment on a terminal which is conflicted in physical resource occupation: adjusting sending power of the terminal or adjusting physical resource occupied by the terminal. By employing a technical scheme of the present invention, interference between cells can be reduced, and on the basis of not changing an interface between UE and an eNB, reception performance of the PDCCH is raised.