NarrowBand IoT Data Transmission Procedures for Massive Machine Type Communications

TL;DR

This paper reviews and evaluates NarrowBand IoT data transmission procedures designed for massive machine-type communications, demonstrating significant energy savings and capacity improvements over traditional methods.

Contribution

It provides a comprehensive overview and performance evaluation of NB-IoT's Control Plane and User Plane procedures for small data transmission, highlighting their efficiency gains.

Findings

Energy consumption optimized, extending battery life by over 2 years.

Cell capacity improvements range from 26% to 224%.

Control Plane achieves up to 8 years battery life with good coverage.

Abstract

Large-scale deployments of massive Machine Type Communications (mMTC) involve several challenges on cellular networks. To address the challenges of mMTC, or more generally, Internet of Things (IoT), the 3rd Generation Partnership Project has developed NarrowBand IoT (NB-IoT) as part of Release 13. NB-IoT is designed to provide better indoor coverage, support of a massive number of low-throughput devices, with relaxed delay requirements, and lower-energy consumption. NB-IoT reuses Long Term Evolution functionality with simplifications and optimizations. Particularly for small data transmissions, NB-IoT specifies two procedures to reduce the required signaling: one of them based on the Control Plane (CP), and the other on the User Plane (UP). In this work, we provide an overview of these procedures as well as an evaluation of their performance. The results of the energy consumption show both optimizations achieve a battery lifetime extension of more than 2 years for a large range in the considered cases, and up to 8 years for CP with good coverage. In terms of cell capacity relative to SR, CP achieves gains from 26% to 224%, and UP ranges from 36% to 165%. The comparison of CP and UP optimizations yields similar results, except for some specific configurations.