Abstract: 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).

Abstract: The method and device proposed for wireless communications systems based on WCDMA technology modifies the desired signal to interference ratio target (SIRtarget) when it detects the exit from the wind-up condition in the mobile communication, that is, when the unwinding process has started, in order to match it to the outer loop power control in normal mode, setting for this desired signal to interference ratio target (SIRtarget) a value that is as close as possible to that which it had just before the moment of the start of the wind-up so that immediate afterwards it can continue with the correct variation determined by the power control in the normal mode of the outer loop. Thus, the unwinding time is shortened and the interference in the mobile communication system is reduced, while its capacity and the quality of its wireless connections are increased.

Abstract: Outer loop power control (OLPC) method and apparatus for mobile communications systems which allow rapid adjustment of the target desired signal to interference ratio (SIRtarget) satisfying a target block error rate (BLERtarget). Specifically, the outer loop power control method proposed herein is termed “Outage-Based OLPC” and establishes that the target desired signal to interference ratio (SIRtarget) is given as the sum of two components: the first component (SIRoutage-tgt) is calculated by means of a dynamic adjusting function, for example, a neural network which makes a quality criterion based on outage probabilities correspond with one based on the target block error rate (BLERtarget), taking as input the fading margins associated with the different outage probabilities considered; the other component (SIRBLER-tgt) is that which acts to correct the possible deviations in the target block error rate (BLERtarget) due to the non-ideal behavior of the previous component (SIRoutage-tgt).

Abstract: Method and apparatus for the power control system outer loop of a mobile communications systems in a cellular infrastructure that allows fulfilling a given Quality of Service (QoS) with the minimum power level necessary. This outer loop is in charge of setting the desired signal to interference target ratio SIRtgt that fulfils the required quality of service in a radioelectric environment characterised by stochastic models. The proposed method is based on the application of the Newton-Raphson iteration method on numerical approximations of the various outage probability (QoS) probability density functions in various propagation environments, so that having established this probability and dynamically estimated the second order moments characteristic of each statistic considered, the margin over the SIR median is obtained and thereby the SIRtgt corresponding to the aforementioned outage probability.