Dear Colleagues,

Massive machine type communications (mMTC) are one of the key pillars of Fifth generation cellular communications (5G) as standardized by 3GPP. Release 17 of the 3GPP specifications includes topics such as "Small Data Transmissions in Inactive State" and "Support of reduced-capability NR devices".

While acknowledging the substantial progress in providing mMTC connections in 5G, the possibility to have massive machine type communications in licensed (and possibly unlicensed) spectrum is still open. Further options are opened by the possibility to use Satellites for mMTC.

This Special Issue is seeking original contributions on (but not limited to) the following topics:

• Radio interface enhancements for terrestrial and satellite-based 5G and beyond mMTC connectivity;
• MAC layer protocol enhancements for terrestrial and satellite-based 5G and beyond mMTC connectivity;
• Network architectures for terrestrial and satellite-based 5G and beyond mMTC;
• Reduced complexity architectures for user equipment in terrestrial and satellite-based 5G and beyond mMTC;
• Special applications of terrestrial and satellite-based 5G and beyond mMTC in verticals such as, for example:
  
  • Precision agriculture;
  • Infrastructure monitoring;
  • Logistics and asset tracking;
  • Smart cities.

Dr. Lorenzo Vangelista
Guest Editor

Prof. Dr. Rafael Kunst
Co-Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Sensors is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

• mMTC
• Massive IoT
• 5G