Paging DRX can be UE specific or cell specific. Enodeb informs Cell specific Paging DRX to MME through S1setup request. UE informs UEspecific DRX to MME in attach/TA update to MME . So MME have both Paging DRX .
Suppose MME needs to perform Paging for UE to which UE specific Paging DRX is different to enodeb Paging drx then MME sends UE specific Paging in s1ap Paging msg. So that enodeb can schedule Paging with min Paging DRX in the cell.