Читать книгу Intelligent Security Management and Control in the IoT - Mohamed-Aymen Chalouf - Страница 38

NB-IoT is a cellular access technology of the Low Power Wide Area Network (LPWAN) type, specified in the document “Rel-13” by the 3GPP (3GPP 2016). Improvements to it were then provided in the documents “Rel-14”, “Rel-15” and “Rel-16” (Mwakwata et al. 2019). Several key players in the industry, such as Ericsson, Nokia, Intel or Huawei, have shown a keen interest in this standard and have broadly participated in its standardization (Bicheno 2015).

NB-IoT technology is also presented as a promising candidate for covering one of the three main pillars of 5G, that is the massive Machine Type Communication (mMTC) (3GPP 2018a; Narayanan et al. 2018). In fact, the ITU has defined different requirements in terms of the density of the IoT terminals, battery life, coverage, price and mechanisms and features supported, to which the suggested technologies must respond to implement mMTCs (Kafle et al. 2016). In this direction, the 3GPP has suggested several mechanisms and NB-IoT features to meet these demands through different releases (Mwakwata et al. 2019). The options for integrating the NB-IoT with the core 5G network and its coexistence with the other services suggested in the framework of this standard are also studied by the 3GPP (3GPP 2019a). A better use of physical resources via the virtualization of network functions (NFV) or the SDN, as discussed in Migabo et al. (2020), can also facilitate this integration.