Multipath correction method for fine timing measurements

Abstract

Described herein are devices, systems, methods, and processes for improving the accuracy of fine timing measurement (FTM)-based ranging in wireless networks. An initiating device may select optimal transmit and receive chains for ranging measurements between the initiating device and a responding device. The selection can be based on the quality of the link between the devices, determined through the analysis of channel state information. The initiating device can further detect non-line-of-sight conditions and can apply correction factors to minimize the error caused by multipath reflections. The outcome is a more accurate estimate of the distance between devices, enhancing the precision of location determination in wireless networks, particularly in challenging indoor environments. Moreover, the initiating device may dynamically select the best transmit and receive chains as the initiating device ranges with different responding devices in various directions and orientations.