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Method of controlling initial power ramp-up in CDMA systems by using short codes

DC
  • US 6,181,949 B1
  • Filed: 01/06/1998
  • Issued: 01/30/2001
  • Est. Priority Date: 06/27/1996
  • Status: Expired due to Term
First Claim
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1. A method for controlling transmission power during the establishment of communications between a base station and at least one subscriber unit, the method comprising:

  • transmitting a periodic signal from said subscriber unit at an initial predetermined power level;

    increasing said power level at a predetermined ramp-up rate;

    detecting said periodic signal at said base station when a sufficient power for detection is achieved;

    transmitting a signal from said base station confirming that said periodic signal has been detected;

    receiving said confirmation signal at said subscriber unit; and

    ceasing the increase of the power level of the transmission of said periodic signal at said predetermined power level ramp-up rate when said confirmation signal is received.

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