Wireless Data Channel Transmission via CDM Group Mapping

The patent segments the data channel transmission into multiple independent TRP transmissions, where each TRP transmits separate transport blocks or repeated transmissions. This segmentation allows the system to achieve diversity gain and improved reliability through multiple independent transmission paths while managing complexity by treating each TRP transmission as a separate entity that can be independently configured and managed.

The patent introduces spatial dimensionality by utilizing multiple TRPs located at different geographical positions to transmit data channels. This spatial diversity adds a new dimension to the transmission system, enabling the UE to receive signals from multiple spatial locations, thereby improving reliability through spatial diversity without requiring complex temporal or frequency multiplexing schemes.

The patent merges multiple transmission resources from different TRPs to transmit the same transport block or transport blocks together. By combining spatial resources from multiple TRPs, the system achieves reliable URLLC transmission through spatial diversity while efficiently utilizing available resources, thereby reducing the overall resource overhead compared to using a single TRP with extensive time-frequency repetition.

The patent applies partial repetition schemes where not all transport blocks require full repetition across all TRPs. Instead, critical URLLC data receives repeated transmissions across multiple TRPs while less critical data may use single TRP transmission, thereby achieving the necessary reliability for URLLC services while minimizing overall resource overhead through selective repetition.

The patent creates a universal mapping framework between TCI states and resource domains that can be applied across different M-TRP transmission scenarios. This universal mapping rule enables the same TCI state configuration mechanism to serve multiple purposes including spatial QCL indication, beam management, and resource allocation across different TRPs, thereby improving multiplexing efficiency while avoiding the need for separate configuration mechanisms for each TRP.

The patent utilizes TCI state parameters to dynamically indicate spatial QCL relationships between DM-RS ports and TRPs. By changing and manipulating TCI state parameters through DCI signaling, the system can efficiently configure and reconfigure multiple TRP transmissions without requiring complex explicit configuration messages, thereby improving multiplexing efficiency while keeping configuration relatively simple through parameter-based control.