5g Nr（新空口）中灵活帧结构对时延敏感业务的支持能力评估

Puntos clave

• This study aims to evaluate the capabilities of the flexible frame structure in 5G NR for supporting latency-sensitive applications like URLLC.
• Constructed a delay model targeting URLLC services.
• Conducted simulation experiments to assess performance across different frame structure configurations.
• Analyzed the impact of scheduling mechanisms and transmission time intervals on end-to-end delay.
• End-to-end user plane latency was effectively controlled within 1 millisecond with dedicated slots for uplink or downlink and reduced transmission time interval (TTI) to a single OFDM symbol level.
• The introduction of grant-free scheduling significantly improved latency performance.
• Identified challenges related to interference coordination, resource fragmentation, and scheduling complexity for practical deployment.