公开(公告)号：US20210007070A1

公开(公告)日：2021-01-07

申请号：US16574836

申请日：2019-09-18

Applicant: QUALCOMM Incorporated

Inventor： Surendra Kompala ,  Uday Kumar Kuppili ,  Stanley Tsai ,  Rahul Jaitly ,  Troy Curtiss ,  Naga Chandan Babu Gudivada ,  Ehren Van Melle

IPC: H04W56/00 ,  H04M1/725 ,  H03L1/02

Abstract: Auto-recovery from RF signal acquisition failure may be provided in a portable computing device. A field-calculated frequency-temperature (“FT”) curve is used to apply temperature compensation to a crystal oscillator associated with RF transceiver circuity of the device. In response to acquisition failure, it may be determined whether a deviation between the field-calculated FT curve and a factory-set FT curve exceeds threshold criteria. In response to acquisition success, the field-calculated FT curve may be refined based on frequency error information. However, in response to acquisition failure and a determination that the deviation exceeds the threshold criteria, information defining the field-calculated FT curve may be replaced with information defining the factory-set FT curve.