tions to the idle state, the core network has to page the UE with network and radio signaling, causing extra service latency to transition to the connected state. In other words, the length of the user- inactivity timer determines a trade-off between UE energy consumption and connection latency as well as network control signaling overhead. Whenever the latency requirement can be relaxed, the DRX can provide further power savings. This will reduce the active duty cycle for downlink control channel monitoring, and if cross-slot scheduling is config- ured, then data channel reception is only needed when UE data is present. With this con- figuration the UE modem/transceivers may spend approximately 90% of time in a low- power sleep mode, but the penalty would be the substantially increased latency. The UE in RRC_IDLE and RRC_INACTIVE states may use DRX in order to reduce power con- sumption. While in RRC_IDLE, the UE monitors 5GC-initiated paging, in RRC_INACTIVE the UE is reachable via RAN-initiated paging and 5GC-initiated paging. The RAN and 5GC paging occasions overlap and same paging mechanism is used. The UE monitors one paging occasion per DRX cycle to receive the paging message. Paging DRX cycle length is configurable and a default DRX cycle for core-network-initiated pag- ing is sent via system information. A UE-specific DRX cycle for core-network-initiated paging can be configured via UE dedicated signaling. The NG-RAN can configure a UE with a DRX cycle for RAN-initiated paging, which can be UE specific. The number of paging occasions in a DRX cycle is configured and signaled via system information. A network may assign UEs to the paging occasions based on UE identities when multiple paging occasions are configured in the DRX cycle. When DRX is configured, the UE does not have to continuously monitor downlink control channels. If the UE detects a rele- vant downlink control channel, it stays awake and starts the inactivity timer. The DRX mechanism is characterized by several parameters such as on-duration