The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 17, 2023
Filed:
Sep. 16, 2021
Apple Inc., Cupertino, CA (US);
David Öhmann, Bavaria-Bayern, DE;
Hongbo Yan, San Diego, CA (US);
Amir Farajidana, Cupertino, CA (US);
Dietmar Gradl, Bavaria-Bayern, DE;
Sami M. Almalfouh, Cupertino, CA (US);
Shengshan Cui, San Diego, CA (US);
APPLE INC., Cupertino, CA (US);
Abstract
Systems and methods are provided for a user equipment (UE) to perform frequency offset (FO) delta tracking. For an anchor component carrier (CC), the UE wakes up to perform tracking updates on a plurality of successive DRX cycles. For the non-anchor CC, the UE determines a minimum update interval Δt, and schedules wake-ups on a first subset of the plurality of successive DRX cycles based on the minimum update interval Δt. For the first subset of the plurality of successive DRX cycles with scheduled wake-ups, the UE performs the tracking updates on the non-anchor CC and updates an FO delta between the anchor CC and the non-anchor CC. For a second subset of the plurality of successive DRX cycles without the scheduled wake-ups on the non-anchor CC, the UE applies the FO delta to correct for a frequency error.