Multiplexed HARQ Feedback Transmission in Carrier Aggregation

The patent divides the carrier aggregation system into multiple PUCCH groups, where each group manages a subset of cells. This segmentation allows HARQ feedback to be transmitted through multiple PUCCH cells simultaneously, improving reliability while distributing the processing complexity across different groups rather than concentrating it in a single cell.

The patent introduces dynamic selection mechanisms where the UE can adaptively choose which PUCCH cell to use for feedback transmission based on current channel conditions, cell priorities, and group configurations. This dynamic approach optimizes transmission reliability without requiring the UE to maintain fixed complex configurations for all possible scenarios.

Instead of multiplexing all HARQ feedbacks into a single PUCCH cell, the patent segments them into multiple PUCCH groups, each with its own designated PUCCH cell(s). This segmentation ensures that feedback transmission is distributed across multiple cells, improving reliability while keeping the complexity manageable through structured group management.

The patent introduces PUCCH groups as intermediary structures between the individual cells and the final transmission point. These groups act as mediators that organize and manage HARQ feedback from multiple cells, enabling reliable transmission through selected PUCCH cells without requiring the UE to handle all cells directly, thus balancing reliability and complexity.

The patent segments the carrier aggregation system into multiple PUCCH groups, each capable of having multiple PUCCH cells. This segmentation provides adaptability by allowing flexible configuration of groups and cells based on specific network conditions and requirements, while managing complexity through modular group structures that can be independently configured and managed.

The patent enables dynamic parameter changes within PUCCH groups, such as adjusting which cells belong to which groups, changing the number of PUCCH cells per group, and modifying transmission priorities. These parameter changes allow the system to adapt to varying conditions without requiring fundamental structural changes, balancing adaptability with manageable complexity.