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IN A RADIO NETWORK ENVIRONMENT, REDUCING INTERFERENCE AMONG OVERLAPPING CELLS

  • US 20110034174A1
  • Filed: 08/04/2009
  • Published: 02/10/2011
  • Est. Priority Date: 08/04/2009
  • Status: Active Grant
First Claim
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1. A method for a femtocell to reduce signal interference with a macrocell that overlaps the femtocell, the method comprising:

  • obtaining, by the femtocell, soft-frequency-reuse (SFR) information of the overlapping macrocell;

    analyzing, by the femtocell, the obtained SFR information to distinguish between frequency sub-channels to be assigned to cell-center users of the macrocell and frequency sub-channels to be assigned to cell-edge users of the macrocell;

    giving, by the femtocell, high schedule priority for femtocell-downlink transmissions to frequency sub-channels to be assigned to cell-center users of the macrocell; and

    transmitting, by the femtocell to a user of the femtocell, on a high-schedule-priority frequency sub-channel.

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