Disclosed are systems and methods that include embodiments to determine a system frame number (SFN) of a radio frame using a first identifier related to the UE, a discontinuous reception (DRX) period length of the UE, and a parameter indicating a quantity of paging occasions within the DRX period length. A second identifier can be sent in a downlink control channel within a radio sub-frame of the radio frame, and a paging message is associated with the second identifier. This systems and methods may also include embodiments to determine a position of the radio sub-frame within the radio frame associated with the SFN with reference to a quantity of radio sub-frames suitable for the paging in the radio frame, the identifier related to the UE, and a parameter derived from the DRX period length of the UE.