Patent ID: 8605632

Claim:
A method of transmitting subframe designating information by a base station, which is transmitted to one or more user equipments via a downlink in a wireless communication system, the method comprising: generating radio frame period information and offset information for designating at least one radio FDD (frequency division duplexing) frame containing one or more target subframes; generating the subframe designating information for designating the target subframes within the at least one radio FDD frame designated by the radio frame period information and the offset information; and transmitting system information comprising the radio frame period information, the offset information and the subframe designating information to the one or more user equipment, wherein the at least one radio FDD frame includes 0 th through 9 th subframes, each of the 10 subframes includes 2 slots and each of the 2 slots includes a predetermined number of OFDM (orthogonal frequency divisional multiplexing) symbols, and wherein the subframe designating information has a bitmap in which each bit of the bitmap corresponds to each of a predetermined number of subframes selected from among all subframes within the at least one radio FDD frame, wherein each bit of the bitmap indicates whether or not each of the predetermined number of subframes is one of the target subframes, wherein the bitmap includes 24-bit information for designating the target subframes within 4 consecutive radio FDD frames, wherein each bit of the 24-bit information, from the leftmost bit of the 24-bit information, indicates whether 1 st , 2 nd , 3 rd , 6 th , 7 th and 8 th subframes within each of the 4 consecutive radio FDD frames starting from a first one of the 4 consecutive radio FDD frames are designated to the target subframes, and wherein if each bit of the 24-bit information is set to 1, it indicates that the corresponding subframe is set to one of the target subframes.