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METHOD AND APPARATUS FOR PROTECTING A PRIMARY SERVICE IN WLAN SYSTEM

  • US 20110222488A1
  • Filed: 10/22/2010
  • Published: 09/15/2011
  • Est. Priority Date: 03/12/2010
  • Status: Active Grant
First Claim
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1. A method of protecting a primary service by a station as an unlicensed device in a regulatory domain where a licensed device and the unlicensed device are permitted to operate, the method comprising:

  • acquiring a list of identified available channels for the operation of the unlicensed device and maximum allowed transmission powers of the identified available channels from a regulatory domain database system;

    generating a white space map (WSM) comprising the list of identified available channels and the maximum allowed transmission powers of the identified available channels;

    updating the WSM when the station acquires information that a primary service signal is detected on a specific channel which is indicated as available in the WSM; and

    transmitting the updated WSM to another station such that the another station moves to another channel if the another station is operating on the specific channel.

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