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Sensing proximity utilizing a wireless radio subsystem

  • US 9,788,162 B2
  • Filed: 05/10/2016
  • Issued: 10/10/2017
  • Est. Priority Date: 05/31/2011
  • Status: Active Grant
First Claim
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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 wireless communications 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 wireless communications device, information associated with a social graph maintained by the online system, wherein;

    the social graph comprises a plurality of nodes and a plurality of edges connecting the nodes, each of the nodes representing a user or a concept, and each edge between two nodes representing a single degree of separation between the two nodes; and

    the first user is represented by a first user node in the social graph.

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