CPC H04B 7/04013 (2023.05) [G01S 3/46 (2013.01); G01S 5/0273 (2013.01)] | 30 Claims |
1. An apparatus comprising:
a communication interface;
a memory; and
a processor communicatively coupled to the communication interface and the memory and configured to:
obtain a first phase difference indication corresponding to a first difference in phase between a first signal wirelessly received, at a first time, by a wireless signaling device from a transmitter and a second signal wirelessly received, at a second time that is different from the first time, by the wireless signaling device from the transmitter; and
determine a first angular relationship between the transmitter and the wireless signaling device based on the first phase difference indication, a first virtual focal point location of the first signal, and a second virtual focal point location of the second signal, the second virtual focal point location and the first virtual focal point location being different, wherein a virtual focal point location is a location from which a signal appears to originate based on a phase surface of the signal, and wherein the first angular relationship is a first angle from a first line, connecting the first virtual focal point location and the second virtual focal point location, to the wireless signaling device.
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