Uplink Control Information Piggybacking in Carrier Aggregation

The patent applies parameter changes by dynamically selecting which carrier to piggyback UCI on based on varying conditions such as PUSCH scheduling status across different carriers. The mobile station evaluates parameters including whether PUSCH is scheduled on primary or secondary carriers, and adjusts the piggybacking decision accordingly. This resolves the contradiction by providing clear carrier selection rules that maintain single carrier property while ensuring operational clarity.

The patent implements self-service by enabling the mobile station to autonomously determine which carrier should carry the piggybacked UCI based on its own scheduling information and configuration. The mobile station independently evaluates its PUSCH scheduling status on different carriers and selects the appropriate carrier without requiring additional network coordination, thus maintaining single carrier property while providing clear operational guidance.

The patent resolves this contradiction by changing the decision parameter from static to dynamic, where the carrier selection for piggybacking depends on real-time scheduling parameters. The mobile station evaluates whether PUSCH is scheduled on the primary carrier or secondary carriers at the moment of UCI transmission, and selects the carrier based on these dynamic parameters. This maintains resource utilization efficiency while preventing information loss about carrier identification.

The patent applies inversion by reversing the conventional approach: instead of always piggybacking UCI on a specific carrier type (e.g., always primary carrier), the system inverts the logic to piggyback on secondary carriers when PUSCH is scheduled there, and only falls back to primary carrier when necessary. This inverted approach maintains resource efficiency while providing clear carrier identification.