'Peng Yang, Xing Xi, Tony Q. S. Quek, , Jingxuan Chen, Xianbin Cao, , Dapeng Wu, [^1]'
bibliography:
- 'Network\_slicing.bib'
title: 'RAN Slicing for Massive IoT and Bursty URLLC Service Multiplexing: Analysis and Optimization'
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Massive IoT, random access channel, bursty URLLC, RAN slicing

Introduction
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the explosive growth of the Internet of Things (IoT), massive IoT (mIoT) devices, the number of which is predicted to reach 20.8 billion by 2020, will access to the wireless networks for implementing advanced applications, such as e-health, public safety, smart traffic, virtual navigation/management, remote maintenance and control, and environment monitoring. To address the IoT market, the third-generation partnership project (3GPP) has identified mIoT as one of the three main use cases of 5G and has already initiated several task groups to standardize several solutions including extended coverage GSM (EC-GSM), LTE for machine-type communication (LTE-M), and narrowband IoT (NB-IoT) [@Cellular-Ericsson; @LTE-Nokia].

For establishing massive connections among the wireless networks and mIoT devices, the investigation of reliable and efficient access mechanisms should be prioritized. In accomplishing the massive connections, when an active IoT device wants to transmit signal in the uplink, it randomly chooses a random access (RA) preamble from an RA preamble pool and 