A wireless communication system (1, 2) configured to perform inter-cell coordination control for coordinating a base station (100, 300) of a first cell and a base station (200, 400) of a second cell with each other and transmitting a signal to a mobile station of the first cell, the base station of the first cell (100, 300) comprising: a first controller (100a, 300a) configured to interleave resources of a control channel of the first cell enhanced to a predetermined region of the first cell corresponding to a predetermined resource unit based on a common identifier that is an identifier common to the base station (100, 300) of the first cell and the base station (200, 400) of the second cell; and a first communication unit (100b, 300b) configured to transmit a control signal to the mobile station of the first cell using a first resource of the control channel of the first cell that corresponds to at least a part of the predetermined resource unit and is to be decoded by the mobile station of the first cell, the base station (200, 400) of the second cell comprising: a second controller (200a, 400a) configured to interleave resources of a control channel of the second cell enhanced to a predetermined region of the second cell corresponding to the predetermined resource unit based on the common identifier; and a second communication unit (200b, 400b) configured to transmit a control signal to the mobile station of the first cell using a second resource of the control channel of the second cell that corresponds to at least a part of the predetermined resource unit and is to be decoded by the mobile station of the first cell, and the mobile station of the first cell comprising: a third communication unit configured to receive the control signal transmitted from the base station (100, 300) of the first cell using the first resource and receive the control signal transmitted from the base station (200, 400) of the second cell using the second resource, characterised by the first controller (100a, 300a) of the base station of the first cell is configured to block-interleave the resources of the control channel of the first cell in units of a predetermined number of modulation symbols and perform cyclic shift on the block-interleaved resources of the control channel of the first cell in units of the predetermined number of modulation symbols using the common identifier, and the second controller (200a, 400a) of the base station of the second cell is configured to block-interleave the resources of the control channel of the second cell in units of the predetermined number of modulation symbols and perform cyclic shift on the block-interleaved resources of the control channel of the second cell in units of the predetermined number of modulation symbols using the common identifier. a first controller (100a, 300a) configured to interleave resources of a control channel of the first cell enhanced to a predetermined region of the first cell corresponding to a predetermined resource unit based on a common identifier that is an identifier common to the base station (100, 300) of the first cell and the base station (200, 400) of the second cell; and a first communication unit (100b, 300b) configured to transmit a control signal to the mobile station of the first cell using a first resource of the control channel of the first cell that corresponds to at least a part of the predetermined resource unit and is to be decoded by the mobile station of the first cell, a second controller (200a, 400a) configured to interleave resources of a control channel of the second cell enhanced to a predetermined region of the second cell corresponding to the predetermined resource unit based on the common identifier; and a second communication unit (200b, 400b) configured to transmit a control signal to the mobile station of the first cell using a second resource of the control channel of the second cell that corresponds to at least a part of the predetermined resource unit and is to be decoded by the mobile station of the first cell, and