Patent ID: 9182493
Filing Date: 2015-11-10
Classification: G01S,H04W

Abstract:
1. A method for synchronizing a global navigation satellite system (GNSS) receiver, comprising: receiving, by a wireless device, via a wireless local area network (WLAN), fine time assistance information transmitted by an assisting device connected to the WLAN; adjusting, by the wireless device, a time value of a GNSS clock of the wireless device based on the fine time assistance information; acquiring, by the wireless device, GNSS codes of a GNSS positioning signal based on the adjusted time value extracting a departure time from the received fine time assistance information measuring an arrival time of the fine time assistance information at the wireless device; estimating a value for propagation delay time within the wireless device; computing clock bias between the wireless device and the assisting device based on the departure time, arrival time, and value for propagation delay; and adjusting the time value based on the clock bias.