PDSCH Reception Using Dynamic TCI State Selection

The patent extracts the TCI state indication function from the main DCI structure by using a separate specific field that can be independently configured. This allows the TCI information to be taken out as an optional element, providing precise transmission configuration when needed while avoiding unnecessary overhead when not required.

The patent makes the inclusion of the specific TCI field dynamic and configurable through RRC signaling. The field is only present in DCI when explicitly configured, allowing the system to adapt between precise configuration mode (field present) and simplified mode (field absent) based on operational requirements.

The patent segments the TCI state management into multiple independently configurable states, where each TCI state can be associated with different TRPs. This segmentation allows the UE to handle multiple TRPs through separate, manageable state configurations rather than a monolithic complex structure.

The patent creates a universal TCI state framework where the same DCI structure and processing logic can handle both single-TRP and multi-TRP operations. The system maintains multi-functionality by using a unified approach that works for any number of TRPs, reducing the need for separate handling logic for different scenarios.

The patent applies preliminary action by having the UE maintain and prepare multiple TCI states in advance through RRC configuration and activation. When PDSCH reception is needed before the QCL time interval expires, the UE can immediately use the pre-prepared TCI states without waiting for the interval to elapse, thus maintaining both speed and reliability.

The patent provides beforehand cushioning by maintaining multiple activated TCI states as backup options. If the scheduled PDSCH timing falls before the QCL time interval, the UE has pre-configured TCI states ready to ensure reliable reception, cushioning against the potential reliability loss from early reception timing.