A wireless communication method for a wireless communication system including a base station and a plurality of terminals, wherein: the wireless communication system uses a frame comprising a plurality of sub-frames being units of a transmission, the sub-frames comprising a plurality of data symbols and guard intervals of a same length between the data symbols, each sub-frame being transmitted every frame period, and one of two types of guard interval lengths being assigned to each sub-frame; the method comprising: inserting, by the base station, a guard interval of a fixed first guard interval length between the data symbols in a specified sub-frame of the frame; determining, by the base station, placement information which indicates timings of guard intervals of a short and a long guard interval lengths applied in the sub-frames for transmitting dedicated data and for small to medium cells and for transmitting broadcast/multicast data and for large cells, respectively, in the frame to which the specified sub-frame belongs; multiplexing, by the base station, the placement information to a transmission signal in the specified sub-frame; receiving, by the plurality of terminals, the placement information; determining, by one of the plurality of terminals, the short and the long guard interval lengths applied in the sub-frames in the frame, based on the placement information; and removing, by the one of the plurality of terminals, a guard interval of the short and the long guard interval lengths from a reception signal, based on the placement information. the wireless communication system uses a frame comprising a plurality of sub-frames being units of a transmission, the sub-frames comprising a plurality of data symbols and guard intervals of a same length between the data symbols, each sub-frame being transmitted every frame period, and one of two types of guard interval lengths being assigned to each sub-frame; the method comprising: inserting, by the base station, a guard interval of a fixed first guard interval length between the data symbols in a specified sub-frame of the frame; determining, by the base station, placement information which indicates timings of guard intervals of a short and a long guard interval lengths applied in the sub-frames for transmitting dedicated data and for small to medium cells and for transmitting broadcast/multicast data and for large cells, respectively, in the frame to which the specified sub-frame belongs; multiplexing, by the base station, the placement information to a transmission signal in the specified sub-frame; receiving, by the plurality of terminals, the placement information; determining, by one of the plurality of terminals, the short and the long guard interval lengths applied in the sub-frames in the frame, based on the placement information; and removing, by the one of the plurality of terminals, a guard interval of the short and the long guard interval lengths from a reception signal, based on the placement information. inserting, by the base station, a guard interval of a fixed first guard interval length between the data symbols in a specified sub-frame of the frame; determining, by the base station, placement information which indicates timings of guard intervals of a short and a long guard interval lengths applied in the sub-frames for transmitting dedicated data and for small to medium cells and for transmitting broadcast/multicast data and for large cells, respectively, in the frame to which the specified sub-frame belongs; multiplexing, by the base station, the placement information to a transmission signal in the specified sub-frame; receiving, by the plurality of terminals, the placement information; determining, by one of the plurality of terminals, the short and the long guard interval lengths applied in the sub-frames in the frame, based on the placement information; and removing, by the one of the plurality of terminals, a guard interval of the short and the long guard interval lengths from a reception signal, based on the placement information.