An integrated circuit for controlling operation of a communication device comprises circuitry configured to: control transmitting a scheduling request (SR) over a physical uplink control channel (PUCCH), wherein the SR is pending until a valid uplink grant is received; control receiving information on a first time duration via a radio resource control (RRC) signaling different from a discontinuous reception (DRX) configuration; control receiving information on a second time duration via a medium access control (MAC) control element; and control starting an active time to monitor the PDCCH after the transmission of the SR and a monitoring sleeping time, wherein the monitoring sleeping time has a total time duration of the first time duration and the second time duration.