C-DRX is an optional feature in LTE. When the eNB indicates that C-DRX is enabled,the UE monitors the PDCCH in pre-defined sub-frames, referred to as, active duty. The UEsubsequently turns off its receiver for a predefined scheduling period, referred to as sleep duty.In return, C-DRX provides substantial savings to the device battery and increases the networkefficiencies
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