Multi-TB DCI Mapping to Reduce MTC Signaling Overhead

The patent merges multiple transmission parameters (number of TBs, HARQ process numbers, NDIs, resource configuration mode) into a single DCI message by establishing mapping relationships between these parameters. Instead of indicating each parameter separately, the system uses joint coding where the DCI carries an index that maps to a pre-defined combination of parameters, thereby reducing signaling overhead while maintaining complete parameter specification.

The patent changes the parameter representation from individual explicit indications to a compressed joint indication scheme. By defining mapping relationships between multiple parameters and using these as a unified indication in DCI, the system transforms the parameter transmission approach from high-overhead separate indication to low-overhead combined indication, effectively reducing signaling overhead.

The patent applies preliminary action by pre-defining mapping relationships between multiple transmission parameters before actual transmission occurs. These mapping relationships are established in advance through protocol configuration or higher-layer signaling, allowing the DCI to use compact indices that reference pre-agreed parameter combinations. This enables the system to indicate multiple parameters with reduced DCI size while maintaining full adaptability.

The patent makes the DCI structure universal by designing it to handle multiple different parameter combinations through a single joint indication mechanism. The mapping relationship approach allows one DCI format to indicate various combinations of TB numbers, HARQ processes, NDIs, and resource configurations, providing multi-functionality without requiring multiple specialized DCI formats.