Deferred SPS HARQ-ACK Priority for Uplink Collision Resolution

The patent changes the priority parameter of the deferred SPS HARQ-ACK transmission to match the higher priority level of the colliding transmission. This parameter change allows the deferred transmission to be prioritized correctly during collision resolution, preventing resource waste while maintaining reliability. The base station identifies the priority mismatch and adjusts the priority parameter accordingly before resource allocation.

The patent performs preliminary priority adjustment before the actual transmission occurs. By proactively identifying potential collisions and adjusting the priority parameter in advance, the system prevents resource conflicts before they occur. This preliminary action ensures that when multiple transmissions are scheduled for the same resource, the correct prioritization is already in place, avoiding both reliability issues and resource waste.

The patent implements a self-service mechanism where the UE autonomously determines and applies priority adjustments for its own SPS HARQ-ACK transmissions. When the UE detects a slot format collision, it automatically adjusts the priority parameter of its deferred transmission without requiring complex base station intervention. This self-service approach reduces system complexity while maintaining improved resource utilization through priority-based collision resolution.

The patent simplifies the system by focusing on a single key parameter change (priority level) rather than implementing complex multi-dimensional scheduling adjustments. By changing only the priority parameter and using it as the basis for collision resolution, the system achieves improved resource utilization with minimal additional complexity. The base station and UE both use this single parameter change to make scheduling decisions, avoiding the need for complex algorithms.