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Common control channel uplink power control for adaptive modulation and coding techniques

  • US 6,587,697 B2
  • Filed: 03/18/2002
  • Issued: 07/01/2003
  • Est. Priority Date: 05/14/2001
  • Status: Expired due to Term
First Claim
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1. A method for determining uplink power level in a wireless digital communication system comprising a base station and at least one user equipment (UE), comprising the steps of:

  • (a) said base station transmitting a signal over a physical reference channel to the UE;

    (b) said UE calculating a path loss, responsive to the transmission over the physical reference channel, a power setting of which is known to the UE;

    (c) said base station, responsive to an uplink transmission from the UE, measuring uplink interference level for time slots in which the UE transmits;

    (d) said base station, allocating a specific uplink control channel indicating uplink interference level in the channel, said allocation and indication being transmitted to the UE;

    (e) said UE determining an uplink power level based on current path loss calculated by the UE and said indication; and

    (f) initiating an uplink control channel transmission to the base station having the power level determined at step (e).

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