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Protocols for enabling mode 1 and mode 2 devices in TV white space networks

  • US 10,051,626 B2
  • Filed: 08/26/2014
  • Issued: 08/14/2018
  • Est. Priority Date: 11/02/2010
  • Status: Active Grant
First Claim
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1. An apparatus for wireless communications, comprising:

  • a receiver configured to receive;

    a beacon frame comprising an indication of a time that a first message will arrive;

    the first message based on the indicated time, the first message including;

    a field indicating a current version of an unused frequency spectrum map, the unused frequency spectrum map indicating channels usable for the wireless communications, andan indication that the first message is a contact verification signal (CVS); and

    a response message, based on a request message, the response message including an updated unused frequency spectrum map, wherein the updated unused frequency spectrum map comprises the current operating channel of the apparatus if the current operating channel is still available; and

    a processing system configured to;

    determine whether the current version of the unused frequency spectrum map included in the first message is different than a previous version of the unused frequency spectrum map;

    generate the request message for the update unused frequency spectrum map responsive to a determination that the current version of the unused frequency spectrum map is different than the previous version of the unused frequency spectrum map; and

    select a channel for the wireless communications based on the updated unused frequency spectrum map; and

    a transmitter configured to;

    transmit the request message; and

    transmit a wireless communication using the selected channel.

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