An Enhanced Access Reservation Protocol With a Partial Preamble Transmission Mechanism in NB-IoT Systems

作者：Kim Taehoon; Kim Dong Min; Pratas Nuno; Popovski Petar; Sung Dan Keun^*

来源：IEEE Communications Letters, 2017, 21(10): 2270-2273.

DOI：10.1109/LCOMM.2017.2720585

• Narrow band Internet of things (NB-IoT)
• random access
• preamble structure

We propose an enhanced access reservation protocol (ARP) with a partial preamble transmission mechanism for the narrow band Internet of Things (NB-IoT) systems. The proposed ARP can enhance the ARP performance by mitigating the occurrence of preamble collisions, while being compatible with the conventional NB-IoT ARP. We provide an analytical model that captures the performance of the proposed ARP in terms of false alarm, misdetection, and collision probabilities. Moreover, we investigate a tradeoff between the misdetection and the collision probabilities, and optimize the proposed ARP according to the system loads. The results show that the proposed ARP outperforms the conventional NB-IoT ARP, in particular, at heavier system loads.

• 出版日期2017-10