Hi Hinamani,
If the SPS and DRX activated together then UE will utilize the PDSCH in all SPS occasion and will not decide the DRX during DRX off.
If eNB wants to reactivate/modify/deactivate the SPS then it has to wait till the next DRX on duration period to send PDCCH. UE will decode the PDCCH only in that SF.