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Techniques for transmitting preambles over an unlicensed radio frequency spectrum band

  • US 9,929,844 B2
  • Filed: 09/25/2015
  • Issued: 03/27/2018
  • Est. Priority Date: 11/18/2014
  • Status: Active Grant
First Claim
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1. A method for wireless communication, comprising:

  • determining, by a device, that an unlicensed radio frequency spectrum band is available for a communication;

    transmitting, by the device and based on determining that the unlicensed radio frequency spectrum band is available for the communication, a preamble that indicates that the device is transmitting information via the unlicensed radio frequency spectrum band,wherein the preamble is associated with a first radio access technology; and

    transmitting, by the device and based on determining that the unlicensed radio frequency spectrum band is available for the communication, a beacon signal that indicates that the device is transmitting the information via the unlicensed radio frequency spectrum band,wherein the beacon signal is associated with a second radio access technology that is different from the first radio access technology, andwherein the preamble and the beacon signal indicate the radio access technology that the device is using to transmit the information via the unlicensed radio frequency spectrum band.

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