Yearbook Telecommunications

Integration techniques in digital video production

Yoana Ivanova — 2024-06-30

The aim of this paper is to present basic digital integration techniques that are applied in the television and film industry to create a final product that meets modern quality criteria. Emphasis is placed on applied methods of creating video content for various purposes, as well as on the main components of the technological equipment of a professional television studio. The scientific-applied contribution is expressed in a comparative analysis of software products for video processing (Adobe Premiere Pro and Openshot Video Editor), which is supported by step-by-step algorithms for the implementation of basic integration techniques in digital video production. The conclusions made regarding the characteristics, possibilities and advantages of the selected products are intended to support the interns in the process of their assimilation and effective use for the realization of creative projects.

Applications of 3D printing and digital transformation in aerospace engineering and telecommunication technologies

Yoana Ivanova — 2024-06-30

The aim of the development is to present the overall process of building functional prototypes for the purposes of aerospace engineering and telecommunication technologies, based on specific examples from the author's scientific and practical work. The scientific-applied contribution of the research is expressed in the correct selection and comparative analysis of compatible software products and devices for 3D modeling, digital transformation and 3D printing of objects from the space infrastructure and. in particular, of radio technical devices as key components of telecommunication satellites. The presented practical results are in the form of a final product that, if the criteria for precise modeling and the selection of a suitable material for 3D printing are met, can satisfy the quality criteria of the relevant industry for which it is intended.

Applied methods for 3D modeling of radio engineering devices

Yoana Ivanova — 2024-06-30

The aim of the paper is to present applied methods for engineering 3D modeling of pyramidal and conical horn antennas, which can contribute to the implementation of experimental research, both in a simulation and in a physical environment. The practical results presented at each step of the model building process are represented by screenshots of the work screen showing the used toolbars from the Autodesk 123D Design software menu. This is done with a view to improving the quality of training in areas related to the study of radio engineering devices, such as telecommunications engineering and aerospace engineering, in which the design and manufacture of various types of antennas help to conduct independent empirical research by the trainees with the help of measuring equipment.

Deterministic networks using segment routing

Tsvetelina Simeonova — 2024-06-30

The aim of the work is to analyze the new direction in telecommunications - creation of deterministic networks using segment routing technology within IPv6. The results obtained cover the consideration of network functions in a deterministic IP network (DIP), its architecture and principle of operation. The various aspects of segment routing (SR) technology are given, as well as the many use cases, incl. traffic engineering, network failure recovery, stateless chaining of services, introduction of 5G network "slices", cross-domain switching to connect users to applications on servers in multiple data centers, segment routing in SD-WAN. The main technologies of a DIP network are considered: traffic flow shaping (smoothing), input scheduling, time slot scheduling. The contributions relate to analysis and conclusions on the applicability, scope and development of DIP networks using segment routing technology within IPv6.

Models for the optimization of radio signaling capabilities in 5G systems

Rosen Pasarelski — 2024-06-30

Optimizing radio signaling capabilities in 5G systems involves various modeling techniques that can be systematized as follows - channel modeling, signal processing, optimization algorithms, queuing theory, machine learning, information theory, radio resource management, interference management, network topology and routing.

The purpose of writing the article is to analyze mathematically the methods for optimizing radio signaling capabilities in 5G systems and to propose different models representing the behavior of the radio channel in variable environments and conditions. To consider algorithms and mathematical models for processing and analysis of radio signals received by gNB and user devices. To discuss mathematical models for analyzing and optimizing radio system performance in terms of delay, packet loss and throughput. Research and analysis of radio signaling capabilities in 5G systems, presentation of models related to the behavior of the radio channel in different environments and conditions, analysis of algorithms and mathematical models for processing and analysis of radio signals received from 5G base stations and end user devices can be noted as contributions to the development of the article.

Interaction between the 4G - EPC core and the 5G RAN

Rosen Pasarelski — 2024-06-30

The Radio Access Network - 5G RAN is designed to work seamlessly with the existing 4G EPC network infrastructure. This enables a smooth transition from fourth 4G to fifth generation 5G mobile systems, both for operators and end users. The radio access network - 5G RAN uses a new core network architecture - 5GC, which is designed to be more flexible and scalable than the previous EPC architecture.

The purpose of writing the article is to analyze the methods of interaction between the EPC core of 4G networks and the 5G system core. To explore interfaces and interconnection protocols with an emphasis on roaming and non-roaming architectural models. To discuss the interaction between the 5GC core network and the E-UTRAN radio network associated with the EPC in terms of achieving this goal through non-3GPP access.

Analysis of the methods of interaction between the EPC core of 4G networks and the 5GС, the study of interfaces and interaction protocols in different operating environments can be noted as contributions to the development of the article.

Realization and most often occupied positions and professions of graduates of communication and computer engineering and informatics and computer science professional fields

Tereza Stefanova — 2024-06-30

The specialists working in the ICT sector have mostly graduated from the professional fields of Communication and Computer Engineering and Informatics and Computer Science. Students from these two professional fields are educated in a total of 33 higher schools: 17 in Communication and Computer Engineering and 16 in Informatics and Computer Sciences. The article presents information on higher education institutions in both professional fields according to the "Taxable income of graduates" indicator. Data from the Rating System of Higher Education Institutions in Bulgaria in 2022 were used. The most often held positions and professions by graduates of the professional fields of Communication and Computer Engineering and Informatics and Computer Science are shown. Conclusions have been made about the changes in the incomes of the graduates of the two professional fields.

Analysis of radio frequency spectrum planning and allocation for the deployment of new modern broadband networks and technologies

Teodora Pasarelska — 2024-06-30

When analyzing the planning and distribution of the radio frequency spectrum on a global and European scale, the need to manage the radio frequency spectrum is taken into account, which is in accordance with the provisions of the Radio Regulations of the International Telecommunication Union, the decisions and recommendations of the European Commission and the Electronic Communications Committee of the European Conference by post and telecommunications. The analysis in the management of the radio frequency spectrum is also in accordance with the Bulgarian legislation, in which the principles of legality, predictability, transparency, publicity, consultativeness, equality, proportionality, neutrality in relation to the technologies used and/or the services provided and reducing the regulatory intervention to the minimum required. The basic principles of spectrum management and allocation involve a combination of technical, regulatory and organizational considerations. The purpose of writing the article is to analyze spectrum efficiency and the adaptation of spectrum management policies to evolving technologies and market dynamics.

Editorial Board — 2024-06-30

Yearbook Telecommunications

Integration techniques in digital video production

Applications of 3D printing and digital transformation in aerospace engineering and telecommunication technologies

Applied methods for 3D modeling of radio engineering devices

Deterministic networks using segment routing

Models for the optimization of radio signaling capabilities in 5G systems

Interaction between the 4G - EPC core and the 5G RAN

Realization and most often occupied positions and professions of graduates of communication and computer engineering and informatics and computer science professional fields

Analysis of radio frequency spectrum planning and allocation for the deployment of new modern broadband networks and technologies

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