HARQ-ACK Feedback for Multi-PDSCH Scheduling

The patent segments the HARQ-ACK feedback mechanism by introducing distinct feedback timing indicators for each scheduled PDSCH within a single DCI. This allows the terminal to separately identify and process HARQ-ACK feedback occasions for each PDSCH, resolving the ambiguity that would otherwise occur when multiple PDSCHs are scheduled together. The segmentation of feedback timing information ensures reliable HARQ-ACK transmission while maintaining the efficiency benefit of multi-PDSCH scheduling.

The patent introduces dynamic adaptability by enabling the system to switch between time domain bundling and separate HARQ-ACK feedback modes depending on the scheduling scenario. When a single DCI schedules multiple PDSCHs, the system can dynamically select appropriate feedback timing indicators for each PDSCH, allowing flexible adaptation between bundling (for reduced overhead) and separate feedback (for enhanced reliability), rather than being constrained to a fixed mode.

The patent applies preliminary action by providing the terminal with advance information through the DCI about the HARQ-ACK feedback timing for each scheduled PDSCH. The feedback timing indicators are included in the scheduling DCI before the actual PDSCH reception, allowing the terminal to pre-prepare and allocate resources for HARQ-ACK feedback transmission. This preliminary provision of timing information reduces the instantaneous processing burden on the terminal while enabling multi-PDSCH scheduling to achieve higher throughput.