Fine-Time Assistance for GNSS using Wi-Fi
Deric W. Waters, Ariton E. Xhafa, Ramanuja Vedantham, Karthik Ramasubramanian · 2011
This paper presents a method by which a GNSS receiver equipped with Wi-Fi can receive fine-time assistance from another Wi-Fi enabled device which knows the time of day accurately. This system is based par tly on mechanisms in IEEE 802.11v. Using this method the benefits of fine-time assistance such as lower comp lexity for acquisition, faster time to first fix, and improved sensitivity can be applied to a broader set of devices without any newly installed permanent infrastructure. Instead of such infrastructure devices collaborate or cooperate wit h each other.