Outer loop power control method and apparatus for wireless communication systems

摘要

An adjustment of the target signal to interference ratio (SIRtarget) at the start of each transmission (N) uses an Outage-Based OLPC method, which establishes the ratio (SIRtarget) as the sum of a first component (SIRoutage-tgt) that adjusts quickly to the conditions of the communications channel and a second component (SIRBLER-tgt) that is adjustable according to a target block error rate (BLERtarget) The stored values of the two components (SIRoutage-tgt, SIRBLER-tgt) in at least one prior transmission (N-1) are used obtain convergence of the target ratio (SIRtarget) by setting the initial value in the transmission (N) for the first component (SIRoutage-tgt) equal to a value higher than the average values for the first component (SIRoutage-tgt) and setting the initial value in said transmission (N) for the second component (SIRBLER-tgt) and setting the initial value in said transmission (N) for the second component (SIRBLER-tgt) equal to the average of the values of the second component (SIRBLER-tgt).