Uplink Control Information Compression for NR Terminals

The feedback response information is segmented into multiple priority levels (first priority, second priority, third priority). The terminal device selectively transmits only the most important segments (first priority feedback information) when bit limit is reached, discarding lower priority segments. This segmentation allows the system to maintain transmission efficiency for critical data while reducing overall bit quantity to fit within configured limits.

The terminal device extracts and retains only the most essential feedback information (first priority CBG-level feedback) when the total bit count exceeds the maximum. Lower priority information (second and third priority feedback) is removed or discarded. This extraction principle ensures that the most important transmission efficiency data is preserved while eliminating excess bits that cause the contradiction.

Different priority levels are assigned to different feedback information based on their importance. First priority feedback information (most critical) is preserved, while second and third priority information (less critical) is discarded when bit reduction is needed. This local quality differentiation ensures that information loss is minimized by retaining only the most essential data while reducing total bit count.

The terminal device changes the parameter of information selection by applying priority-based filtering. Instead of transmitting all feedback information equally, it transforms the information set by removing lower priority elements, thereby reducing bit count while preserving the most important feedback data. This parameter change approach balances information completeness with bit quantity constraints.