公开(公告)号：US20160234761A1

公开(公告)日：2016-08-11

申请号：US14750413

申请日：2015-06-25

Applicant: Samsung Electronics Co., Ltd.

Inventor： Dah-Hae CHONG ,  Ho-II KIM ,  Soo-Bok YEO ,  Min-Goo KIM ,  Chae-Hag YI

IPC: H04W48/16 ,  H04L25/02

CPC classification number: H04L25/024 ,  H04J11/0069 ,  H04L27/0014 ,  H04L2027/0026

Abstract: Methods and apparatuses are provided for performing a cell search by a receiver in a communication system. A scrambling code is identified by correlating a common pilot channel with a first synchronization accumulation length based on a frame boundary and a code group. A multipath signal is sought by correlating the common pilot channel with a second synchronization accumulation length based on the frame boundary and the code group. A difference between, or a ratio of, a first maximum value of first correlation values acquired during identification of the scrambling code and a second maximum value of second correlation values acquired during searching for the multipath signal, is determined. It is determined whether a frequency offset exists by comparing the difference or the ratio with a predetermined threshold value. The frequency offset is estimated and the frequency offset is transmitted to a demodulator, when the frequency offset exists.

Abstract translation: 提供了用于在通信系统中由接收机执行小区搜索的方法和装置。 通过基于帧边界和码组将公共导频信道与第一同步累加长度相关联来识别扰码。 通过基于帧边界和代码组将公共导频信道与第二同步累加长度相关联来寻求多径信号。 确定在识别扰码期间获取的第一相关值的第一最大值与在搜索多路径信号期间获取的第二相关值的第二最大值之间的差异或比率。 通过将差异或比率与预定阈值进行比较来确定是否存在频率偏移。 当频率偏移存在时，估计频率偏移并将频率偏移传输到解调器。