Operating a UE device having a single radio configured to communicate using a first and second RAT. The UE may begin operating in a connected discontinuous reception (CDRX) mode of the first RAT, where the CDRX mode comprises an on duration timer and an inactivity timer. The method may determine that the single radio of the UE is being used for a second RAT during the CDRX mode. The UE may operate at least one of a CDRX on duration timer or an inactivity timer of the first RAT while the single radio of the UE is being used for the second RAT. While the single radio of the UE is being used for the second RAT, the at least one of the CDRX on duration timer or the inactivity timer may operate even though no communication or monitoring is performed on the first RAT.