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User equipment for controlling transmission power levels

  • US 20070030882A1
  • Filed: 10/10/2006
  • Published: 02/08/2007
  • Est. Priority Date: 03/22/2000
  • Status: Abandoned Application
First Claim
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1. A user equipment (UE) for controlling transmission power levels in a system employing a spread spectrum time division duplex (TDD) technique having frames with timeslots for communication, the UE comprising:

  • a measuring device configured to receive, during a first time slot, a communication including a power level and measure the power level of the received communication and an interference power level;

    a pathloss estimation device configured to determine a pathloss estimate and a long term pathloss estimate, based in part on the measured power level and the received power level;

    a quality measurement device configured to determine a first quality factor, α

    , and a second quality factor, 1−

    α

    , of the pathloss estimate based in part on a number of timeslots, D, between the first and a second timeslot; and

    a transmit power calculation device configured to set a transmission power level for transmission during the second timeslot based in part by adding the pathloss estimate multiplied by the first quality factor, to long-term pathloss estimate multiplied by the second quality factor, to the measured interference power level, to a target signal to interference ratio, to a constant value.

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