The evolution of the Internet of Things (IoT) over the past 20 years

Jianxin Wang, Ming Lim, Chao Wang, Ming-lang Tseng

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    119 Citations (Scopus)
    1581 Downloads (Pure)


    To reveal the origin of the IoT, evaluate its mainstream research topics, and discuss the challenges facing the IoT in the future, this paper conducts a bibliometric study of the IoT from 2000 to 2019. First, this paper presents a basic bibliometric overview of the IoT. Second, co-citation, coupling and cluster analysis methods are used to analyse collaboration networks, and VOSviewer is used to visualize the networks. Third, biblioshiny is used to analyse the thematic trends of IoT. Finally, this paper discusses IoT challenges and provides some suggestions to address them. The limitations of this paper are also summarized. Research results show that, the mainstream studies in this field mainly focus on IoT security, wireless sensor networks, IoT management, IoT challenges and privacy. In addition, the thematic evolution of keywords shows that security and algorithm issues have become basic themes in the field of IoT research in recent years.

    Original languageEnglish
    Article number107174
    JournalComputers & Industrial Engineering
    Early online date11 Feb 2021
    Publication statusPublished - May 2021

    Bibliographical note

    NOTICE: this is the author’s version of a work that was accepted for publication in Computers & Industrial Engineering. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Computers & Industrial Engineering, 155, (2021) DOI: 10.1016/j.cie.2021.107174

    © 2021, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International


    Chongqing Science and Technology Commission (Project no. cstc2019jscx-msxmX0189 ), the National Natural Science Foundation of China ( 72071006 and 62073007 ), and the Fundamental Research Funds for the Central Universities , Project No. 2018CDXYJX0019 .


    • Bibliometric
    • Biblioshiny
    • Internet of things
    • Network analysis
    • Thematic trends analysis
    • VOSviewer

    ASJC Scopus subject areas

    • Computer Science(all)
    • Engineering(all)


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