公开(公告)号：WO2014004868A3

公开(公告)日：2014-02-27

申请号：PCT/US2013048249

申请日：2013-06-27

Applicant: QUALCOMM INC

Inventor： FARMER DOMINIC GERARD ,  AGARWAL VISHAL ,  SIMIC EMILIJA MILORAD ,  FILIPOVIC DANIEL FRED ,  MOVVA SASIDHAR

IPC: G01S19/23

CPC classification number: H04W56/00 ,  G01S19/235 ,  H03L1/022

Abstract: Systems and methods for temperature-calibration of an uncompensated XO in a mobile device during mobile device operation. The XO is temperature-calibrated based on assistance from wireless signals, such as from satellite source, and optionally from terrestrial sources such as WWAN, CDMA, etc. Based on one or more received wireless signals received at a receiver, corresponding frequency estimates of the XO are obtained and correlated with corresponding operating temperatures in a processor. Based on one or more samples of frequency estimates and associated temperatures, the XO is temperature-calibrated in the processor wherein a frequency-temperature (FT) model is formulated for the XO. The frequency of the temperature-calibrated XO can be determined from the FT model at any given temperature.

Abstract translation: 用于在移动设备操作期间对移动设备中的未补偿的XO进行温度校准的系统和方法。 XO基于来自诸如来自卫星源的无线信号的辅助以及可选地来自诸如WWAN，CDMA等的地面来源的辅助来进行温度校准。基于在接收器处接收到的一个或多个接收到的无线信号， 获得XO并将其与处理器中的相应操作温度相关联。 基于一个或多个频率估计和相关温度的样本，XO在处理器中进行温度校准，其中为XO制定频率 - 温度（FT）模型。 温度校准的XO的频率可以在任何给定温度下由FT模型确定。