Telefonaktiebolaget Lm Ericsson (publ)

Bo Engstr&ouml;m

M&aring;rten Ericson

Magnus K Almgren

A method and apparatus for controlling transmission power levels in a CDMA cellular communication system are disclosed, whereby a third (middle) control loop is interposed between an inner loop and an outer loop to form a cascaded power control loop. Certain quality indicators are coupled to the outer loop and middle loop. The outer loop produces a quality target value for the middle loop. The middle loop produces the SIR target value.

Power control in a CDMA mobile communication system

A transmission power control method and system are provided for use in a spread spectrum or CDMA mobile communications system, whereby an estimate of the achieved SIR is used as an additional parameter for the outer power control loop function. When the QoS and achieved SIR are both too low, the QoS is ignored and the SIR target value is instead controlled by the achieved SIR. Similarly, when both the QoS and achieved SIR are too high, the QoS is ignored and the SIR target value is instead controlled by the achieved SIR.

Growing community of inventors

Luleå, Sweden

Bo Engström

Growing community of inventors

Luleå, Sweden

Bo Engstr&ouml;m

Bo Engström