公开(公告)号：JP2002124917A

公开(公告)日：2002-04-26

申请号：JP2001247522

申请日：2001-08-17

Applicant: LUCENT TECHNOLOGIES INC

Inventor： CHEN TAI-ANN ,  KYPING LEE ,  MEYERS MARTIN HOWARD ,  QIU ROBERT CAIMING ,  WEAVER CARL FRANCIS

IPC: H04L1/00 ,  H04B7/005 ,  H04B7/26 ,  H04J13/00

Abstract: PROBLEM TO BE SOLVED: To allow an external output control loop method for setting a target SIR using a measured FER to work sufficiently in a high-speed fading state. SOLUTION: A method for accelerating the output control using a channel state estimation scheme is provided, wherein the estimation of channel state is equivalent to measuring or estimating channel parameters including the speed of a moving station, Doppler diffusion, K factor, the number of multiplexed channels, and the intensity of each of multiplexed channel, but not limited to these parameters. One or more relation between the channel state and a target signal-to-interference ratio or between other control thresholds are determined. Using the determined relations, the target signal-to-interference ratio or other control thresholds are set. This method has the advantage of estimating or measuring the channel state at much shorter time intervals than service quality parameters such as a frame error rate and bit error rate, accelerating the output control and increasing the system capacity.