公开(公告)号：US20130122822A1

公开(公告)日：2013-05-16

申请号：US13671680

申请日：2012-11-08

Applicant: QUALCOMM INCORPORATED

Inventor： Shivratna Giri Srinivasan ,  Brian Clarke Banister ,  Supratik Bhattacharjee

IPC: H04W24/00

CPC classification number: H04J11/0073 ,  H04J11/00 ,  H04J11/0076 ,  H04L27/26 ,  H04L27/2657 ,  H04L27/2666 ,  H04L27/2675

Abstract: In a wireless network, a base station (BS) may send a primary synchronization signal (PSS) and a secondary synchronization signal (SSS). The synchronization signals may be used by user equipments (UEs) for cell detection and acquisition. A typical searching operation may involve first locating the PSS sequences transmitted by neighboring BSs, followed by SSS detection. Described further herein are algorithms that result in the detection of the PSS and the SSS from a BS. A method for detecting a BS generally includes sampling a received signal from receiver antennas to obtain a sampled sequence, analyzing the sampled sequence to detect a PSS in a current half-frame (HF), calculating signal-to-noise ratio (SNR) metrics based on the detected PSS, combining the calculated SNR metrics with SNR metrics from previous HFs, analyzing the combined SNR metrics to obtain timing information, and analyzing the sampled sequence using the timing information to detect a SSS.

Abstract translation: 在无线网络中，基站（BS）可以发送主同步信号（PSS）和辅同步信号（SSS）。 同步信号可以由用户设备（UE）用于小区检测和获取。 典型的搜索操作可以包括首先定位由相邻BS发送的PSS序列，随后进行SSS检测。 这里进一步描述了导致从BS检测PSS和SSS的算法。 用于检测BS的方法通常包括从接收机天线采样接收的信号以获得采样序列，分析采样序列以检测当前半帧（HF）中的PSS，计算信噪比（SNR）度量 基于检测到的PSS，将计算的SNR度量与来自先前HF的SNR度量相结合，分析组合SNR度量以获得定时信息，以及使用定时信息分析采样序列以检测SSS。