Patent ID: 8711762

Claim:
A wireless communication method of a base station that transmits a modulation signal based on an orthogonal frequency division multiplexing scheme to a plurality of terminals, the method comprising: determining, for each individual terminal of the plurality of terminals, which subcarrier group or how many symbols along a time axis are to be allocated in a transmission frame, the transmission frame including a first part in which first transmission symbols for the each individual terminal served with a determined allocation are contained and a second part in which second transmission symbols for the each individual terminal served with the determined allocation are contained; forming the transmission frame according to the determined allocation, wherein a transmission scheme for the second transmission symbols is different from a transmission scheme for the first transmission symbols, wherein a first modulated symbol including N bits information (N is a natural number) is arranged within M subcarriers (M is an integer equal to or greater than 2) or M symbols and N bits information is transmitted in the transmission scheme for the first transmission symbols, and wherein a second modulated symbol including P bits (P is a natural number) information is arranged within one subcarrier or one symbol, and P×M bits information is transmitted by using M subcarriers or M symbols, in the transmission scheme for the second transmission symbols; and transmitting the modulation signal using the transmission frame.