Sensing Proximity Utilizing a Wireless Radio Subsystem

摘要

In one embodiment, a method includes by an RF transceiver of a wireless communications device associated with a first user of an online system, receiving an RF reference signal from each antenna of a plurality of antennas coupled to the RF transceiver. The method also includes, by a processor of the wireless communications device, determining, for each antenna of the plurality of antennas, at least one characteristic of the RF reference signal. The method further includes, by the processor of the wireless communications device, characterizing, based on the at least one determined characteristic, at least one aspect of an environment around the device to determine that an object is approaching the device. The method also includes, by the processor of the wireless communications device, retrieving from the online system, based on determining that the object is approaching the device, information associated with the first user.

主权项

1. A method comprising:
by an RF transceiver of a wireless communications device associated with a first user of an online system, receiving an RF reference signal from each antenna of a plurality of antennas coupled to the RF transceiver; by a processor of the wireless communications device, determining, for each antenna of the plurality of antennas, at least one characteristic of the RF reference signal; by the processor of the wireless communications device, characterizing, based on the at least one determined characteristic, at least one aspect of an environment around the device to determine that an object is approaching the device; and by the processor of the wireless communications device, retrieving from the online system, based on determining that the object is approaching the device, information associated with the first user.