TCI State Mapping for Multi-TRP Coherent Joint Transmission

The patent segments the transmission configuration by introducing separate TCI state indicators for different TRPs. Each TRP is associated with its own TCI state, allowing independent configuration and indication of transmission parameters for each TRP. This segmentation reduces the overall configuration complexity by breaking down the complex multi-TRP parameter set into manageable individual TRP parameter sets.

The patent introduces TCI states as intermediary elements that mediate between the network device and terminal. The TCI states serve as a standardized interface that maps physical downlink shared channel parameters to quasi-co-location relationships, simplifying the configuration process. Instead of directly configuring complex transmission parameters for each TRP, the system uses TCI states as intermediaries that encapsulate these parameters in a standardized manner.

The patent applies preliminary action by pre-configuring and pre-indicating TCI states before the actual transmission occurs. The network device provides indication information that specifies which TCI states correspond to which TRPs in advance. This allows the terminal to determine quasi-co-location relationships without performing complex real-time measurements, as the mapping is already established through the indication information.

The patent uses TCI states as standardized templates or copies that represent quasi-co-location relationships. Instead of determining quasi-co-location relationships from scratch for each TRP configuration, the system uses pre-defined TCI state templates that encapsulate these relationships. The indication information points to the appropriate TCI state templates, simplifying the determination process.