公开(公告)号：US20180062890A1

公开(公告)日：2018-03-01

申请号：US15246589

申请日：2016-08-25

Applicant: Intel IP Corporation

Inventor： MATTHEW HAYES ,  GOOCHUL CHUNG ,  CHRIS QUANBECK ,  XIANGYANG ZHUANG

IPC: H04L27/14 ,  H04L5/00 ,  H04L27/26

CPC classification number: H04L27/14 ,  H04J11/00 ,  H04J11/0069 ,  H04L5/0048 ,  H04L27/261 ,  H04L27/2662 ,  H04L27/2671 ,  H04L27/2675

Abstract: A method and mobile communication device adapted for frequency synchronization with a radio access network (RAN) based on frequency shift detection in a first signal received at the mobile communication device, including: offsetting the first signal's frequency by a first value extracted from a second signal received at the mobile communication device; generating a replica of the first signal from a second value extracted from a third signal received at the mobile communication device; multiplying a component of the offset first signal with the replica to generate a product; transforming the product into a frequency-domain signal; and detecting a peak in the frequency-domain signal to determine the frequency shift.