Читать книгу Service Level Management in Emerging Environments - Nader Mbarek - Страница 56

Developments in the domain of the IoT try to optimize the services provided while guaranteeing QoS and security. In this context, research studies and projects and also the various IoT organizations highlight the importance of guaranteeing a service level (QoS and security) between IoT service providers and customers. Different infrastructure, networks and providers interact to offer the IoT service. Thus, research aimed at guaranteeing service levels must take into account the different characteristics of these subenvironments in order to set up mechanisms that are adapted to them in terms of security and QoS.

Security and privacy are essential in the IoT to gain the trust of users and improve the use of services. IoT services impact different areas of daily life and, as a result, the IoT impacts the privacy of users. It is, therefore, essential to comply with European and international regulations concerning privacy protection and this must be integrated into the services offered in an IoT environment. On the other hand, the QoS is another important component of service level that must be considered when offering IoT services. These services can belong to critical fields such as e-health or security. The prioritizing of flows and differentiation of processing are necessary to comply with the requirements and characteristics of these flows corresponding to various fields and services. Several projects have been carried out to set up QoS in the IoT service offering, but there are several challenges that must still be overcome in order to meet the requirements of the IoT environment. In this context, QBAIoT, an approach to guarantee QoS at the device layer of the IoT architecture, makes it possible to differentiate traffic to meet the requirements of each IoT application. This access method based on the IEEE 802.15.4 standard takes into account four categories of service and makes it possible to obtain good performance with a QoS guarantee.