Sidelink Pre-emption via Reservation Messages in NR V2X

The patent applies parameter changes by introducing CBR thresholds as a dynamic parameter that UEs use to autonomously decide whether to monitor for pre-emption indications. When CBR exceeds a threshold, UEs start monitoring; when below, they stop. This parameter-based control resolves the contradiction by providing clear, unambiguous decision criteria that reduce monitoring overhead while maintaining UE autonomy in distributed pre-emption operations.

The patent implements periodic action by making pre-emption indication monitoring conditional and intermittent rather than continuous. UEs monitor for pre-emption indications only when channel conditions warrant it (based on CBR thresholds and priority levels), and stop monitoring when conditions improve. This periodic monitoring approach maintains pre-emption reliability when needed while significantly reducing power consumption and duplexing time waste during normal operations.

The patent applies local quality by making pre-emption monitoring and operation selective rather than universal. Different UEs monitor for pre-emption indications based on their local conditions including priority level, CBR thresholds, and channel state. High-priority UEs monitor more aggressively while low-priority UEs monitor less frequently or not at all. This localized approach ensures QoS for high-priority packets while minimizing overall system complexity and signaling overhead.