Patent ID: 8767685

Claim:
A base station for orthogonal frequency division multiplexing (OFDM) data transmission in a plurality of sub-frames, the base station comprising: a transmitter which transmits a default cyclic prefix for each of first one or more OFDM symbols in each of the plurality of sub-frames, the number of said first one or more OFDM symbols being integer n having a value less than m, where m is a number of OFDM symbols in each of the plurality of sub-frames, and an extended-length cyclic prefix for remaining m-n OFDM symbols, wherein a multimedia broadcast multicast service (MBMS) signal is transmitted in the remaining m-n OFDM symbols, and wherein n is 2 or 3, and wherein a length of the default cyclic prefix is less than a length of the extended-length cyclic prefix.