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Channel assignment method for multi-FA CDMA cellular systems

  • US 6,999,772 B2
  • Filed: 06/03/2003
  • Issued: 02/14/2006
  • Est. Priority Date: 02/24/1998
  • Status: Expired due to Fees
First Claim
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1. A channel assignment method for multi-FA (Frequency Assignment) CDMA cellular systems in which a base station communicates a plurality of mobile stations, said method comprising the steps of:

  • comparing a first threshold value with a cell loading factor of a first FA when the base station receives a new call request in said first FA;

    assigning a first traffic channel in the first FA, if the cell loading factor of said first FA is less than the first threshold value, otherwise searching for a second FA of which the cell loading factor is minimum;

    comparing a second threshold value with the cell loading factor of the second FA; and

    assigning a second traffic channel in the second FA, if the cell loading factor of the second FA is less than the second threshold value, otherwise rejecting the request;

    wherein the cell loading factor of each of the first and second FAs is determined by the following equation;


    cell loading factor=1−

    thermal noise power/received power.

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