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METHOD FOR EFFICIENTLY PERFORMING COVERAGE LOSS OPERATION DURING SLEEP MODE IN A BROADBAND WIRELESS ACCESS SYSTEM

  • US 20110194420A1
  • Filed: 02/08/2011
  • Published: 08/11/2011
  • Est. Priority Date: 02/08/2010
  • Status: Active Grant
First Claim
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1. A method for detecting coverage loss of a mobile station, which is operated in a sleep mode, in a broadband wireless access system, the method comprising:

  • awaking at a first time point when a super frame header (SFH) is transmitted from a serving base station during a sleep mode operation;

    detecting the super frame header; and

    operating for a sleep window or a listening window in accordance with a sleep cycle of the sleep mode if the detected result is successful, and awaking until the super frame header is successfully detected if the detected result is failed.

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