公开(公告)号：EP1994663B1

公开(公告)日：2018-09-19

申请号：EP07710349.7

申请日：2007-01-27

申请人： Google Technology Holdings LLC

发明人： AKITA, Hidenori ,  BAUM, Kevin L. ,  CLASSON, Brian K. ,  FUKUTA, Masaya ,  HAYASHI, Hiroshi ,  NANGIA, Vijay ,  LOVE, Robert T. ,  STEWART, Kenneth A.

IPC分类号： H04L5/00 ,  H04L27/26 ,  H04J11/00

CPC分类号： H04W48/16 ,  H04J11/0073 ,  H04L5/0007 ,  H04L27/2613 ,  H04L27/2655 ,  H04L27/2656 ,  H04L27/266 ,  H04L27/2663

摘要： A method and apparatus is provided for transmitting an orthogonal frequency domain multiple access (OFDMA) signal including a synchronization channel signal transmitted within a localized portion of a bandwidth of the OFDMA signal (818), the synchronization channel signal having predetermined time domain symmetry within the localized portion of the bandwidth (816) and including information for providing at least partial cell identification information (812). The synchronization channel signal enables an initial acquisition and cell search method with low computational load which provides OFDMA symbol timing detection and frequency error detection (1112) and frame boundary detection and cell specific information detection (1114) in an OFDMA system supporting multiple system bandwidths, both synchronized and un-synchronized systems, a large cell index and an OFDMA symbol structure with both short and long cyclic prefix length.

公开(公告)号：EP1985048B1

公开(公告)日：2019-03-13

申请号：EP07710350.5

申请日：2007-01-27

申请人： Google Technology Holdings LLC

发明人： AKITA, Hidenori ,  BAUM, Kevin, L. ,  CLASSON, Brian, K. ,  FUKUTA, Masaya ,  HAYASHI, Hiroshi ,  NANGIA, Vijay ,  LOVE, Robert, T. ,  STEWART, Kenneth, A.

IPC分类号： H04L5/00 ,  H04L27/26 ,  H04J11/00

公开(公告)号：EP2080277B1

公开(公告)日：2018-08-01

申请号：EP07854318.8

申请日：2007-10-23

申请人： Google Technology Holdings LLC

发明人： FUKUTA, Masaya ,  AKITA, Hidenori

IPC分类号： H04B1/707 ,  H04L27/26

CPC分类号： H04L27/2613 ,  H04J11/0069 ,  H04J13/0062 ,  H04J13/0066 ,  H04L5/0007 ,  H04L5/0048 ,  H04L27/2655 ,  H04L27/2675

摘要： A method and apparatus for transmitting a primary and secondary synchronization channel is provided herein. During operation a transmitter will transmit a primary synchronization channel (P-SCH) in a subframe and a secondary synchronization channel (S-SCH) in the subframe. The S-SCH is modulated by a complex exponential wave and scrambled with a scrambling code. In certain embodiments of the present invention the P-SCH comprises a GCL sequence or a Zadoff-Chu sequence and the scrambling code is based on the GCL sequence index of the P-SCH.