公开(公告)号：US20240430828A1

公开(公告)日：2024-12-26

申请号：US18590922

申请日：2024-02-28

Applicant: Samsung Electronics Co., Ltd.

Inventor： Feng Qi ,  Abhishek Sehgal ,  Hao Chen ,  Jianzhong Zhang

IPC: H04W56/00

Abstract: A method includes calibrating, at a wireless device, a wireless fidelity (Wi-Fi) chipset-level timer based on a time synchronization function (TSF) frame received from a Wi-Fi access point. The method also includes performing, at the wireless device, a coarse synchronization of a microcontroller-level or CPU-level timer based on the calibrated Wi-Fi chipset-level timer. The method further includes performing, at the wireless device, a fine synchronization of the microcontroller-level or CPU-level timer after the coarse synchronization. The fine synchronization is performed according to a first time scale measured in first time units and the coarse synchronization is performed according to a second time scale measured in second time units that are a multiple of the first time units.