PUCCH Resource Allocation for URLLC Latency Reduction

The patent segments PUCCH resources into multiple resource groups, where each group contains multiple PUCCH resources. This segmentation allows the system to allocate specific resource groups to different services (eMBB and URLLC), preventing resource collision while maintaining high feedback capacity. By dividing the resource space into organized groups, the patent resolves the contradiction between supporting multiple feedback transmissions and avoiding latency-inducing multiplexing.

The patent introduces dynamic resource allocation mechanisms where the network can flexibly assign different PUCCH resource groups to different services based on instantaneous traffic conditions and latency requirements. This dynamic allocation enables the system to adaptively optimize resource usage, ensuring that URLLC feedback can access low-latency resources when needed while maintaining overall system efficiency and feedback capacity.

The patent applies local quality by creating dedicated PUCCH resource groups with specific characteristics suited for different service requirements. URLLC-specific resource groups are configured with parameters optimized for low latency, while eMBB resource groups are optimized for other performance metrics. This localized optimization allows separate allocation that reduces URLLC latency without requiring complete redesign of the entire resource allocation system.

The patent utilizes parameter changes by configuring different PUCCH resource groups with distinct parameters (such as time-domain offsets, frequency-domain allocations, and multiplexing patterns) that are tailored to specific service requirements. By changing and optimizing these parameters for different resource groups, the patent achieves service-specific performance optimization while maintaining a unified resource management framework that controls complexity.