Air-Interface Slice Based Dynamic Resource Reservation for Ultra-Low-Latency IoT Transmissions

The ultra-low latency transmission for emergency services needs an effective resources management scheme to deliver content in few milliseconds. The traditional solutions can't guarantee the ultra-low latency performance required by such traffic. In this paper, we propose an air-interface slice based dynamic resource reservation schema for a massive number of sensors with emergency flows in the context of the next generation cellular networks. The proposed schema allows ultra-low latency flows to be transported by guaranteed-rate radio link connection with a content name as identifier and it achieves air-interface latency in few milliseconds. The dynamic bit-map update, silence probability and window-based re-transmission are introduced based on the Frame Slotted Aloha, which can schedules the delay-sensitive flows immediately from one or many groups of connected terminals. Furthermore, a probability theory based analytic model is provided and evaluated with Monte-Carlo simulation results.