Paging Recovery for Multi-SIM UEs

The patent implements dynamic time division for paging monitoring by determining specific first time and second time periods. During the first time period, the UE monitors paging messages in the second system, while during the second time period, the UE communicates with the first system. This dynamic scheduling resolves the contradiction by making the monitoring behavior adaptive rather than continuous, thus maintaining service establishment capability while preserving communication performance.

The patent employs periodic paging monitoring by defining specific time periods for monitoring paging messages in the second system. Instead of continuous monitoring, the UE periodically wakes up to check paging messages during predetermined time windows, then returns to communication with the first system. This periodic approach ensures service establishment capability is maintained at critical moments while minimizing interference with ongoing communications.

The patent applies preliminary action by determining and storing the time period for re-paging before actually sending paging messages. When the UE sends a service request, the network device calculates and records the appropriate re-paging time based on this request, rather than immediately re-paging. This preliminary determination of timing prevents unnecessary immediate paging attempts and reduces signaling resource waste while ensuring service delivery at appropriate intervals.

The patent implements feedback mechanisms where the network device receives service requests from the UE and uses this feedback to dynamically determine re-paging timing. The service request acts as feedback indicating the UE's current state and needs, allowing the network to adjust its paging strategy accordingly. This feedback-driven approach ensures service delivery while avoiding wasteful repetitive paging of already-active UEs.