Patent ID: 8873488
Filing Date: 2014-10-28
Classification: H04J,H04L,H04W

Abstract:
1. A method of transmitting a synchronization signal for cell search in an Orthogonal Frequency Division Multiplexing (OFDM) communications system, the method comprising: acquiring one Primary Synchronization sequence and two Secondary Synchronization sequences; mapping the one Primary Synchronization sequence and the two Secondary Synchronization sequences onto subcarriers; generating a first OFDM symbol in a frame, the first OFDM symbol including the mapped one Primary Synchronization sequence; generating a second OFDM symbol in the frame, the second OFDM symbol including the mapped one Primary Synchronization sequence; generating a third OFDM symbol in the frame, the third OFDM symbol including a mapped first Secondary Synchronization sequence among the mapped two Secondary Synchronization sequences; generating a fourth OFDM symbol in the frame, the fourth OFDM symbol including a mapped second Secondary Synchronization sequence among the mapped two Secondary Synchronization sequences; and transmitting the OFDM symbols, wherein the two Secondary Synchronization sequences include cell group information, wherein a Secondary Synchronization sequence transmission bandwidth is identical to a Primary Synchronization sequence transmission bandwidth, and wherein one of the first and second OFDM symbols in the frame is adjacent to one of the third and fourth OFDM symbols in the frame.