Telecommunication systems with discontinuous reception

A method, carried out by a network node, for controlling parameters used by communication terminals of a telecommunication system, the telecommunication system enabling the use of discontinuous reception by communication terminals, wherein

• the use of discontinuous reception by a communication terminal involves DRX cycles, during each one of which a communication terminal is arranged to wake up at least once to monitor a downlink control channel;
• and
• the telecommunication system enables the use of DRX cycles of different lengths;
• the method comprising:
• a determining procedure, comprising determining, by the network node, on a per communication terminal basis, whether the communication terminal is eligible to rely on a terminal-controlled mobility procedure, wherein
• determining is based on at least one characteristic of the communication terminal;
• and
• a setting procedure, comprising setting, by the network node, at least for one of the possible outcomes of the determining procedure, setting one or more parameters on the communication terminal accordingly.