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Reduced Guard Band for Power Over Ethernet

  • US 20080114998A1
  • Filed: 11/05/2007
  • Published: 05/15/2008
  • Est. Priority Date: 11/12/2006
  • Status: Active Grant
First Claim
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1. A method of controlling a power over Ethernet system, the method comprising:

  • sequentially powering a plurality of powered devices over communication cabling;

    determining a first total power consumption responsive to said powering of said plurality of powered devices;

    disabling, in the event that said determined first total power consumption exceeds a predetermined maximum power level, power from at least one of said powered plurality of powered devices thereby reducing power consumption to less than said predetermined maximum power level;

    defining, responsive to said disabling power, a connection power limit lower than said maximum power level by a guard band;

    monitoring a second total power consumption subsequent to said disabling power; and

    enabling power to a powered device only in the event said monitored second total power consumption is less than said connection power limit.

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