Ing. Lenka Mejzrová

The goal of this paper is to propose a testing procedure for selected Intrusion Prevention Systems (IPS) in a realistic network traffic in terms of their suitability on a given hardware microcomputers for low-performance devices for Internet ofThings (IoT). We perform an IPS research in terms of resource usage in order to establish a universal procedure of checking,whether a given microcomputer controlling IoT devices (often in overloaded state) can additionally burden the installation and start-up of IPS. The experiment is repeated on several boards under overload condition to determine the maximum data rate, above which transmission degrades. The presented testing method is an exemplary tool for IoT applications concerning the security of embedded devices with low performance.

Among other aspects, the reliability of electricity meters is important for securing energy supply and other Smart Grid (SG) functions and services. This paper analyses the reliability of functions and services provided by electricity meters in relation to reliability of individual electricity meters and their components. The increasing reliability requirements lead to higher complexity and manufacturing cost of electricity meter. On the other hand, purchase price pressure may cause increased failure rate of an individual meter, drop in overall reliability of SG environment, and finally can increase operating costs. Thus, Total Cost of smart meter Ownership (TCO) is associated with the failure rate (reliability). While seeking optimal TCO/reliability ratio, a contribution of each individual component to the overall failure rate of an electricity meter was investigated. Expected development of selected components reliability parameters and its influence on failure rate of meter and metering system was also estimated.

Smart Networks and Smart Applications become an integral part of modern society. They offer new possibilities with efficiently provided services to end customers and by it further conceptual development of the entire population. Successful operation of Smart Network is closely related to the telecommunication infrastructure. Today, many technologies for telecommunications infrastructure are available. Implementation of objective methodology for the evaluation of individual telecommunication technology is therefore necessary. When evaluating technologies, it is possible to use the principles of conventional telecommunication infrastructures. However, it is needed to adjust qualitative criteria while considering the different requirements of Smart Networks and their Smart Applications. The proposal of the methodology, including the design and analysis of suitable qualitative criteria, the selection, and evaluation of individual communication technologies is the scope of this article.

The information capacity of the access part of the ra-dio networks is continuously increasing as a result of increased bandwidth, the implementation of advanced modulation and coding schemes and multipath transfer techniques (MIMO). This also entails increasing demands on backhaul connection of base stations in both public and private networks. Increasing the number of layers - frequency bands - leads to the need for connection with radio relay links with extreme bandwidth and with optical fibres.