Читать книгу Service Level Management in Emerging Environments - Nader Mbarek - Страница 45

Various projects and research works have studied the integration of Cloud technology in the IoT as well as the guarantee of QoS in this context.

The European BigClouT project, funded by H2020 (July 2016–June 2019), aims to use the three major technological tools of the moment, namely IoT, Cloud and Big Data, in order to increase the efficiency of urban, economic and natural infrastructure shared by growing populations (Grugen 2018). Another research study carried out in Khodkari et al. (2017) considered that the integration of the Cloud in the IoT environment makes it possible to guarantee a QoS level for applications because of the significant resources of the Cloud. Indeed, the Cloud is able to manage diversified data and supply IoT applications with resources in a dynamic way to guarantee performance while lowering costs. In this context, the authors have proposed different functions for measuring QoS attributes (that is, response time, availability, throughput, etc.). On the other hand, the authors in Chowdhury et al. (2018) study the Cloud environment and also IoT. In this context, they highlight different concepts concerning the maintenance of good QoS, the different parameters on which QoS depends (classifying them according to IoT layers), the different problems encountered in maintaining these parameters and the possible solutions for overcoming issues in the Cloud and IoT. This work presents the various parameters to be taken into consideration for the IoT architecture layers, such as traffic load, service deadlines, service time, service precision and service priority. According to this research, QoS parameters in the IoT environment must also consider characteristics of IoT applications hosted in the Cloud.