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BLE networking systems and methods providing central and peripheral role reversal with enhanced peripheral location determination using ultrasonic waveform and correlation therefor

  • US 10,506,498 B1
  • Filed: 06/24/2019
  • Issued: 12/10/2019
  • Est. Priority Date: 11/01/2018
  • Status: Active Grant
First Claim
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1. A BLE communications system, comprising:

  • an end node (EN);

    an access point (AP) configured to connect to a network and transmit a first beacon advertisement message; and

    a plurality of reference points (RPs) comprising an ultrasound emitting reference point (UERP), and each thereof being configured to transmit a second beacon advertisement message, in which the UERP is further configured to transmit an ultrasonic waveform,wherein the EN is configured todetect the first and second beacon advertisement messages,initiate a connection with the UERP to request that the UERP transmit the ultrasonic waveform;

    determine, in response to the transmission of the ultrasonic waveform, a proximity of the UERP to the EN, based on whether a level of detection of the ultrasonic waveform exceeds a predetermined threshold,determine a proximity to at least one of the plurality of RPs other than the UERP, based on the respective second beacon advertisement message thereof,initiate a connection with the AP in which, as a result of the connection, the AP is caused to transfer to the network identifying information of each of the EN and the AP, and a determined UERP proximity result comprising a MAC ID of the UERP if the level of detection exceeds the predetermined threshold, or another RP proximity result comprising a MAC ID of the at least one RP other than the UERP based on the respective beacon advertisement message transmitted from the at least one of the plurality of RPs other than the UERP.

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