Uplink Power Control Bitmap Signaling for Carrier Aggregation

The patent segments the uplink transmission system by introducing separate PUCCH resource pools for different cell groups (first cell group and second cell group). Each cell group can independently allocate PUCCH resources, allowing simultaneous transmission without interfering with the overall system control. This segmentation resolves the contradiction by enabling parallel transmissions while maintaining manageable system complexity through modular resource management.

The patent introduces a new dimension of resource allocation by defining PUCCH resources not just within single cells but across cell groups. By allocating PUCCH resources in the dimension of cell group aggregation, the system enables simultaneous transmissions on multiple carriers while maintaining organized control structures. This dimensional expansion allows efficiency improvement without proportionally increasing control complexity.

The patent applies local quality by providing detailed PUCCH parameters (power control adjustments, resource allocations) specifically for PUCCH transmissions on secondary cells, while primary cell PUCCH parameters follow conventional signaling. This targeted approach ensures precise power control where needed (on SCells with multiple aggregations) without unnecessarily increasing signaling overhead for all PUCCH transmissions in the system.

The patent implements partial action by explicitly signaling PUCCH parameters only for cell groups where simultaneous transmission occurs, rather than for all cells. For cell groups without simultaneous PUCCH transmission, conventional parameter signaling suffices. This partial application of explicit parameter signaling achieves the needed precision for multi-PUCCH scenarios while limiting the increase in overall signaling overhead.