# Suitability of NB-IoT for Indoor Industrial Environment: A Survey and Insights
## 1 Introduction
After the introduction section, in this paper, Section 2 presents the technical background on NB-IoT with brief explanations on WSN, IoT, and IIoT; this is to clarify their relations and impact on NB-IoT. Other topics presented include the standardization and technology of NB-IoT. As shown in the organizational structure of the research article in Figure 1, under the state-of-the-art, Section 3.1 discusses the developmental trends and technical features of NB-IoT, WSN, and IoT. Section 3.2 discusses the industrial application case studies of NB-IoT. The challenges posed by the industrial environments on these technologies are presented in Section 3.3. Table 1 also shows a summary of selected state-of-the-art articles. Further research directions and conclusions are presented in Sections 4 and 5, respectively. Figure 1: A structural description of the paper layout. \begin{table}
\begin{tabular}{c c c c} \hline
**Category** & **Decategories** & **Ref** & **Year** \\ \hline \multicolumn{4}{c}{Survey the features of NB/IoT and its application in industries} & [3] & 2019 \\ \hline \multicolumn{4}{c}{Features of some LPWAN are compared for industrial applications} & [4] & 2019 \\ \hline \multicolumn{4}{c}{Overview of NB-IoT} & [7,7] & 2017 \\ \hline \multicolumn{4}{c}{Evaluating the coverage performance of NB-IoT} & [4] & 2016 \\ \hline \multicolumn{4}{c}{Presents NB-IoT architecture through the perspective of X2 PT} & [4] & 2017 \\ \hline \multicolumn{4}{c}{Explorations on the automation of industries with Narrow-band Internet of Things Technology} & [4] & 2020 \\ \hline \multicolumn{4}{c}{DM a cooperative analysis between the LPWAN via NB-IoT and Leo Orte Wireless Phoenix Network (PWTN)} & [11] & 2018 \\ \hline \multicolumn{4}{c}{Shind the performance of NB-IoT in industry-wide levels.} & [2] & 2020 \\ \hline \multicolumn{4}{c}{Evaluating the Power Setting Mode (PSM) and Expanded Documents Reporting (GR) schemes of NB-IoT and a developed energy model} & [13] & 2018 \\ \hline \multicolumn{4}{c}{Survey of the energy efficiency of NB-IoT, its applications and challenges} & [14] & 2019 \\ \hline \multicolumn{4}{c}{Highlights the applications and implementations of NB-IoT} & [13] & 2017 \\ \hline \multicolumn{4}{c}{N8-IoT, SigFox, Loss and CRSS coverage were compared in area of 7800 km\({}^{2}\)} & [14] & 2017 \\ \hline \multicolumn{4}{c}{A study of the technical appreciation of NB-IoT from physical to its media access control layers} & [7] & 2019 \\ \hline \multicolumn{4}{c}{Proposed in applications between private solutions to NB-IoT} & [18] & 2017 \\ \hline \multicolumn{4}{c}{Shind the performance of NB-IoT and EDTC on the implementation of smart cities} & [9] & 2018 \\ \hline \multicolumn{4}{c}{Andividually proposes IoT architecture} & [24] & 2018 \\ \hline \multicolumn{4}{c}{Presents the opportunities in IoT, its software, and challenges} & [21] & 2018 \\ \hline \multicolumn{4}{c}{Review in IoT} & [22,23] & 2018 \\ \hline \multicolumn{4}{c}{Optimized QoS through wireless transmission in IoT} & [24] & 2020 \\ \hline \multicolumn{4}{c}{Demonstration of IoT by the business of privacy} & [24] & 2019 \\ \hline \multicolumn{4}{c}{Use machine learning for IoT} & [24] & 2020 \\ \hline \multicolumn{4}{c}{Identify the evolution of radio frequency identification in IoT technology} & [7] & 2008 \\ \hline \multicolumn{4}{c}{Survey the impact of IoT on technology, social, and businesses} & [7] & 2018 \\ \hline \multicolumn{4}{c}{Survey the architectural and features of IoT} & [23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73,Research Methodology  
Among the contributions of this paper are, firstly, to review the state-of-the-art research in the field of NB-IoT technology and its applications in industrial environments. To review other IoT technologies (WSN, IoT, and IIoT) upon which NB-IoT is established.