Carrier Aggregation Control Information Detection

The patent segments the control channel monitoring process by dividing carriers into two groups: first carriers (PCell, SCell) monitored in downlink subframes, and second carriers (PCell, SCell) monitored in uplink subframes. This segmentation resolves the contradiction by organizing the multi-carrier monitoring into structured, manageable segments with clear timing rules, reducing detection complexity while maintaining service availability across aggregated carriers.

The patent introduces dynamic adaptation by allowing the UE to flexibly adjust monitoring behavior based on the type of control channel (PDCCH or EPDCCH) and the subframe timing. The monitoring configuration dynamically adapts to different carrier aggregation scenarios, enabling the system to maintain high service availability while managing detection complexity through context-aware dynamic monitoring patterns.

The patent implements periodic monitoring patterns where the UE monitors control channels on aggregated carriers according to specific periodic intervals defined by subframe timing rules. Instead of continuous monitoring on all carriers, the UE performs monitoring at periodic intervals determined by the control channel type and carrier configuration, thereby maintaining detection capability while significantly reducing power consumption and processing load.

The patent applies preliminary action by pre-configuring the UE with monitoring rules that specify which carriers to monitor, when to monitor them, and what control channel types to expect. This preliminary configuration enables the UE to efficiently prepare for control information detection without performing exhaustive searches, reducing both power consumption and processing requirements while maintaining detection capability.