Adaptive PUCCH Repetition for URLLC Reliability and Latency

The patent applies dynamics by making the PUCCH repetition behavior adaptive rather than static. The UE dynamically adjusts its PUCCH transmission strategy based on the detected traffic type (eMBB or URLLC) of the associated PDSCH. For URLLC traffic, the UE transmits PUCCH repetitions towards multiple TRPs to ensure high reliability, while for eMBB traffic, the UE may skip repetitions or transmit to a single TRP to minimize latency. This dynamic adaptation resolves the contradiction between reliability and latency by optimizing the repetition strategy according to actual traffic requirements.

The patent changes the parameter of PUCCH repetition behavior based on traffic type detection. When URLLC traffic is detected, the system increases the repetition parameter (transmitting to multiple TRPs), while when eMBB traffic is detected, the system decreases the repetition parameter (skipping or single TRP transmission). This parameter change approach allows the system to achieve high reliability when needed while maintaining low latency when possible, effectively resolving the contradiction between these two opposing requirements.

The patent applies local quality by differentiating the PUCCH transmission strategy according to the local characteristics of different traffic types. Instead of applying a uniform repetition strategy to all traffic, the system applies high repetition (multiple TRP transmission) locally only to URLLC traffic where high reliability is critical, while applying low or no repetition locally to eMBB traffic where latency and resource efficiency are more important. This localized differentiation resolves the contradiction by optimizing resource usage while maintaining reliability where needed.

The patent implements partial action by applying PUCCH repetition only partially - specifically to URLLC traffic - rather than excessively applying it to all traffic types. The UE detects the traffic type and selectively applies repetitions only when necessary for URLLC, while skipping repetitions for eMBB traffic. This partial application of the repetition mechanism improves resource usage efficiency while still achieving the required reliability for critical URLLC communications.