公开(公告)号：US08670734B2

公开(公告)日：2014-03-11

申请号：US13670580

申请日：2012-11-07

Applicant: QUALCOMM Incorporated

Inventor： Shivratna Giri Srinivasan ,  Raghu Narayan Challa ,  Supratik Bhattacharjee ,  Brian Clarke Banister

IPC: H04B1/10

CPC classification number: H04W56/00 ,  H04B1/7083 ,  H04J11/0069 ,  H04L27/2663

Abstract: Methods and apparatus for determining a reference sequence and timing based on normalized correlations are described. One example method generally includes receiving, at a first antenna of an apparatus, a first signal comprising a reference sequence; receiving, at a second antenna of the apparatus, a second signal comprising the same reference sequence; sampling the first and second signals to form first and second signal sequences; correlating the first and second signal sequences with each of one or more candidate sequences for the reference sequence using normalization; and determining the reference sequence and timing for the first and second signals based on the normalized correlations.

Abstract translation: 描述了基于归一化相关性来确定参考序列和定时的方法和装置。 一个示例性方法通常包括在装置的第一天线处接收包括参考序列的第一信号; 在装置的第二天线处接收包括相同参考序列的第二信号; 对第一和​​第二信号进行采样以形成第一和第二信号序列; 使用归一化将第一和第二信号序列与用于参考序列的一个或多个候选序列中的每一个相关; 以及基于所述归一化相关性来确定所述第一和第二信号的参考序列和定时。

公开(公告)号：US20130121187A1

公开(公告)日：2013-05-16

申请号：US13671017

申请日：2012-11-07

Applicant: Qualcomm Incorporated

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

IPC: H04W24/10

CPC classification number: H04W36/0083 ,  H04B17/309 ,  H04B17/318 ,  H04W24/10 ,  H04W36/0088

Abstract: Methods and apparatus for computing measurement metrics in a wireless communications network are provided. One example method generally includes obtaining a channel impulse response (CIR) from one or more reference signals (RSs) transmitted from one or more antennas of a base station (BS); calculating an absolute square per element of the CIR to generate channel energy response (CER) elements; calculating a threshold value based on a noise variance estimated from a portion of the CER elements; selecting CER elements that exceed the threshold value; and computing a reference signal received power (RSRP) value based on the selected CER elements.

Abstract translation: 提供了用于计算无线通信网络中的测量度量的方法和装置。 一个示例性方法通常包括从从基站（BS）的一个或多个天线发送的一个或多个参考信号（RS）获得信道脉冲响应（CIR）; 计算CIR的每个元素的绝对平方，以产生信道能量响应（CER）元素; 基于从所述CER元素的一部分估计的噪声方差来计算阈值; 选择超过阈值的CER元素; 以及基于所选择的CER元素计算参考信号接收功率（RSRP）值。