Читать книгу Intelligent Security Management and Control in the IoT - Mohamed-Aymen Chalouf - Страница 41

As illustrated in Figure 2.2, NB-IoT can be deployed in three different modes: (1) in-band, within the LTE frequency band by substituting it for a PRB; (2) guard-band, by making use of unused spectrum resources, outside the traditional LTE frequency band; or finally (3) standalone, on an independent carrier. In this latter case, GSM frequencies are most often marked for deployment (Wang et al. 2017).

Figure 2.2. NB-IoT deployment modes

The three deployment modes cited above are transparent for non NB-IoT terminals. These consider the neighboring NB-IoT communications as noise.