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Low power modes for femto cells

  • US 8,687,588 B2
  • Filed: 06/12/2009
  • Issued: 04/01/2014
  • Est. Priority Date: 07/02/2008
  • Status: Active Grant
First Claim
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1. A method for facilitating deployment of a low power mode in an access point (AP) base station, comprising:

  • determining whether any access terminals (ATs) are present within at least one defined coverage area;

    in response to no ATs being within the at least one coverage area, entering the low power mode; and

    when in the low power mode, varying a transmission power at which the AP base station transmits on a synchronization channel, a pilot signal and a broadcast channel as a function of time, wherein a transmission power level is maintained at a nominal level with adequate frequency to allow new ATs to detect the AP base station and ensure alignment between awake periods of any of the new ATs that become associated with the AP base station.

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