A controlling node for a cellular communications system, arranged to determine and transmit commands for Transmit Power Control, TPC, to one or more Mobile Terminals, MTs, in at least one cell in the system. The controlling node is arranged to classify an MT as being in one of a number of states, and to use differing methods for determining an MT's TPC command depending on which state the MT is in, so that one method is used for determining TPC commands to an MT in the active state and another method is used for determining TPC commands to an MT in the passive state.