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Realtime power control in OFDM systems

  • US 6,795,426 B1
  • Filed: 06/23/2000
  • Issued: 09/21/2004
  • Est. Priority Date: 07/06/1999
  • Status: Expired due to Term
First Claim
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1. In a communication system, a method for operating a selected node of said communication system, said method comprising:

  • receiving from a central access point a transmission comprising a MAC layer identifier to be used to request transmission of a power measurement burst;

    receiving a MAC management message comprising said MAC layer identifier;

    developing a burst of L frequency domain symbols wherein L-k frequency domain symbols are given a zero value to allow for transmission by other nodes and one or more of said k of said L frequency domain symbols are set to facilitate measurement of power level;

    converting said burst of frequency domain symbols into a time domain burst of symbols;

    in response to said MAC management message, transmitting said time domain burst of symbols from said selected node as said power measurement burst;

    receiving power adjustment information that was developed based on measurement of said power measurement burst; and

    adjusting transmission power based on said power adjustment information.

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