Patent · US Active

Frequency offset delta tracking for NR connected mode discontinuous reception carrier aggregation

US11792881B2 · kind B2 · utility

1Cited by

1References

20Claims

0Family size

Assignee

Apple Inc. · US

Inventors

David Öhmann · Westerndorf, DE
Hongbo Yan · Lo Wu, CN
Amir Farajidana · San Diego, US
Dietmar Gradl · Westerndorf, DE
Sami M. Almalfouh · San Jose, US
Shengshan Cui · San Diego, US

Key dates

Filing date	Sep 16, 2021
Grant date	Oct 17, 2023
Priority date	—
Expiry date	Mar 14, 2042

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02D30/70
WIPO fieldDigital communication
WIPO sectorElectrical engineering

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 Δtupd, and schedules wake-ups on a first subset of the plurality of successive DRX cycles based on the minimum update interval Δtupd. 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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.