How Discontinuous reception works in LTE connected mode ?

Question

If you have any documents related to this. Please point me that.

Answer 1

Connected mode DRX controls the UE's PDCCH monitoring activity. Without DRX, UE monitors PDCCH for every sub-frame. There are two types of DRX cycles: Long and short. Network configures DRX in RRC and provides timer values. There are several conditions to check before UE can enter into DRX cycle (first short if configured and if there is no transmission during short DRX then long). You can read about the conditions and parameters in section 36.321 section 5.7.

A good high level overview is provided here.