Читать книгу Intelligent Security Management and Control in the IoT - Mohamed-Aymen Chalouf - Страница 13

To avoid the scarcity of frequencies introduced above, the IoT can use the concept of intelligent radio. Many researchers have studied problems linked to spectrum management and channel allocation (Wu et al. 2014b; Koushik et al. 2018; Tarek et al. 2020). In Kumar et al. (2016), the authors studied spectrum handoff schemas in a CRN context and identified three types of transfer. First of all, the reactive approach, where the spectrum handoff and reconfiguration of the radio frequency happen after the primary user has been detected. Then, there is the proactive approach, where the spectrum handoff and frequency reconfiguration take place before a primary user has occupied the channel. Finally, the hybrid approach combines the two previous approaches. Recently, intelligent radio has been used in the IoT, especially in the two vehicular ad-hoc networks. This use has made it possible to improve the network’s spectrum efficiency and the experience of itinerant users by optimizing vehicle communication capacities and the QoS of applications such as road safety and traveler entertainment (Singh et al. 2014; Kumar et al. 2017).

To ensure continuity of service, we have opted for a proactive approach using a prediction module tasked with calculating the probability of future channel availability as well as the average time it is available.