Automatic 4G/5G network management using SON technologies and algorithms The article considers standardized by the 3GPP Partner project automation of mobile network management processes based on the technology of self-organizing SON networks, implemented in modern networks of operation, administration and management of the OAM network. The features of the tasks to be solved at the stages of self-optimization, self-configuration and self-healing of the network at all stages of the life cycle of 4G and 5G mobile communication networks, criteria and approaches to evaluating the effectiveness of solving problems by SON are shown.
Problems of creating antennas with electrical beam scanning for subscriber terminals of satellite communication systems in the KU- and KA-bands Analyzed are the forecasts for the development of the market for flat antennas with electric beam scanning of the HTS and LEO/MEO/HEO-HTS systems planned for use in the subscriber terminals. Requirements for such antennas are formulated. Simple relationships are given to analyze the feasibility of these requirements. Examples of the physical implementation of antennas with electric beam scanning are considered, an analysis of their structure and characteristics is given. The results of the analysis show that the price of $ 100–$ 300 for such antennas can be achieved in relation to subscriber terminals of the HEO-HTS type, in relation to HTS and LEO / MEO-HTS systems, the declared price parameters of subscriber terminals are unattainable in the foreseeable future.
Problems of building FTTH aerial networks in private sector The technologies and approaches to the construction of FTTH air networks in the private sector are considered, the main violations during their creation in Russia are analyzed. Set out proposals for the competent design and construction of such networks with a service life of 25–40 years, while not distorting the architectural appearance of the settlements, in which they are created, is presented.
200G equipment in regional and long-distance traffic: a compromise of price and transmission distance An experiment on single-span signal transmission with a channel speed of 200 Gbit/s over a distance of more than 540 km was successfully carried out in the laboratory of IRE-Polus. It is shown that modern equipment of 200G level has a number of indisputable advantages in comparison with 100G/QPSKequipment, which makes its use attractive in fiber optic lines of regional and mainline levels.
Positron BRX linear amplifier as economical way to increase Last Mile bandwidth The use of Positron BRX linear amplifiers makes it possible to double the range of broadband access via a copper core cable without an expensive fiber-optic line installation.
Receivers for fiber optic: methods for receiving and processing signals of various types When operating fiber-optic communication lines with signals of a certain shape, matching of the receiving and transmitting modules is required over the dynamic range of optical signals, operating wavelength, fiber types and optical connectors. In order to satisfy such diverse requirements for fiber optic lines for operation under climatic, mechanical and electromagnetic effects, sets of functionally complete modules have been developed. Optical receivers are presented for various applications, including for control systems and start-up of devices that commute significant power.
Cable system for iot: first steps The features of building information wiring of the nets for Internet of things are considered and the expediency of using copper single-pair cables as its basis is justified. An overview of the state of the equipment in terms of supported transmission speeds, designs of cable products and detachable connectors, as well as remote power supplies using PoE technology is presented. Information is given on the state of standardization of single-pair technology.
Standards of multimode intra-object fiber: what’s new? The growing need for bandwidth of enterprise networks and data centers, cloud computing and web services continues to be an incentive to increase the transmission speed from 1–10 Gbit/s to 40, 100 Gbit/s and above. A multimode optical fiber today successfully copes with the transferring data over typical distances for specified applications, while it continues to evolve to meet even greater demands for speed and capacity. Information is provided on new developments of MM OF, available communication technologies in this market segment, as well as on the development of relevant standards.
Innovations in field of alert The relevance, large-scale and specificity of projects in the field of warning and information about emergencies implemented by Russian broadcast and alert networks require systematic and coordinated actions by all interested agencies and departments. Practice shows that this approach allows you to effectively implement innovative technologies and technical solutions in this area.
Alexander S.Popov: triumph and tragedy of the scientist. Part 1 In March-April 2019, in connection with the 160th anniversary of the inventor of radio, in the Popov Central Museum of Communications, the exhibition "The triumph and tragedy of the scientist" was held. Alexander S. Popov did not really see his triumph, and the tragic collisions of the beginning of the 20th century, especially in 1905, ended for him with a premature departure from life.