Location-determining system for radio clients within local-area spaces

摘要

Systems, devices, features, and/or methods for determining a location of a mobile device are disclosed. A method may include (a) receiving, into a mobile device, a common RF signal on a common carrier frequency, wherein the common RF signal includes a respective RF signal output by each of three or more transmitters on a common time basis in a round-robin manner, and wherein each of the three or more transmitters is positioned at a known location, (b) capturing data representing the common RF signal, (c) based on the captured data, discriminating between each respective RF signal that forms the received common RF signal, (d) determining a relative phase shift of each respective RF signal, and (e) determining the location of the mobile device based on the determined relative phase shifts and the known locations of the three or more transmitters.

主权项

1. An apparatus comprising:
a processor; and a memory including computer program code configured to, with the processor, cause the apparatus to:
generate a common radio frequency (RF) signal on a common carrier frequency, wherein the common RF signal includes repeating periods of timeslots for three or more transmitters and an unassigned timeslot configured to indicate an arrangement of the repeating periods of timeslots;drive the three or more transmitters using the common RF signal, wherein a location of a mobile device is determinable based on signals received from the three or more transmitters and locations of the three or more transmitters, wherein the signals received from the three or more transmitters are discriminated based on the unassigned timeslot.