Paging Occasion Configuration for NR-U Channel Preemption

The single PO is segmented into multiple POs (first PO and second PO) with different monitoring opportunities. The network configures multiple POs with different time locations, and the UE monitors according to its ID modulo operation result. This segmentation allows the system to try multiple POs when LBT fails at one, thereby reducing paging delay without requiring complex dynamic selection mechanisms.

The network pre-configures multiple POs with different time locations and monitoring opportunities before actual paging transmission. By having multiple POs prepared in advance with different characteristics (some with earlier monitoring, some with later monitoring), the system can immediately use an alternative PO if LBT fails at the first attempt, avoiding the need for complex real-time decision-making and reducing paging delay.

Different POs are designed with different local qualities - some POs have earlier monitoring opportunities while others have later monitoring opportunities. The UE's monitoring behavior is localized based on its ID: UE monitors the first PO at an earlier time if its ID modulo equals a first value, otherwise monitors the second PO at a later time. This local quality differentiation allows reliable paging transmission while minimizing each UE's monitoring time and power consumption.

Instead of requiring all UEs to monitor all POs (excessive action), the system uses partial action where each UE only monitors one or few specific POs based on its ID. The modulo operation distributes UEs across different POs, so that transmission reliability is improved through multiple POs while each UE's monitoring burden and power consumption remain limited to only the POs relevant to its ID.