Configurable Timing Mapping for PUSCH on Unlicensed Channels

The patent applies parameter changes by introducing configurable timing mapping parameters (k values) that define the relationship between downlink subframes carrying UL grant and uplink subframes carrying PUSCH. Different k parameters can be configured for different scenarios, allowing the system to adapt timing relationships dynamically while maintaining structured control mechanisms to manage complexity.

The patent implements dynamics by enabling flexible and configurable timing mapping relationships rather than fixed mappings. The timing offset between DL grant and UL PUSCH can be adjusted through configured parameters, allowing the system to adapt to varying channel conditions, traffic patterns, and interference scenarios while maintaining operational flexibility.

The patent applies preliminary action by performing channel detection (Listen Before Talk - LBT) before actual PUSCH transmission on unlicensed channels. The channel detection process including energy detection and contention window adjustment is executed in advance to ensure reliable channel access, with the timing carefully coordinated through the configured mapping relationship between DL grant and UL transmission subframes.

The patent uses parameter changes by adjusting channel detection parameters such as energy detection thresholds and contention window sizes based on channel conditions and transmission requirements. These parameter adjustments optimize the balance between detection reliability and transmission delay, allowing adaptive channel access strategies.