Evaluation Method for SDN Network Effectiveness in Next Generation Cellular Networks

5G mobile technology will become the new revolution in the mobile communication market. The new networks will focus on significantly improving the quality of service. The basis for their construction will form SDN networks. Therefore, the work analyzed the advantages and disadvantages of two SDN implementing methods. It was developed mathematical method to assess their complex effectiveness, which consider QoS requirements of implementing service through special weights for scalability, performance and packet delay. There were simulations of Overlay networks by using softswitches to verify the adequacy of the proposed method. The results showed that the use of SDN networks more efficiently by using IP networks for large volumes of traffic and with a large number of network equipment. Also, there were compared the approaches to build SDN management level architecture. Based on the studies and modeling we suggested to use distributed controller architecture because of its higher level of reliability

The touristic sector in the 5G technology era: the 5G-TOURS project approach

5G mobile networks are designed to fulfill very stringent requirements and support new vertical use cases. This transition to a vertical oriented delivery model will have a strong impact in the touristic sector. In this context, the "touristic city node" of 5G-TOURS, built in the city of Turin, aims at exploiting the potential of the media vertical. The objective is to develop an innovative tourism concept based on complementary and linked trials for five specific use cases. The trials will promote an overall integrated indoor/outdoor immersive experience to the visitors using any possible device, enhancing the accessibility to the technology especially for disadvantaged and disabled people. They will also utilize 5G to drive "remote tourism" based on AR/VR experiences and bridge the gap between the physical and virtual worlds for tourism. This paper provides an overview of the 5G technology deployed in the touristic node, explaining the different services to be provided and discussing the need of 5G technology to support this vision. This work also assesses the business potential of each of the considered use cases, corroborating their potential in the context of future network services.This work was supported in part by the European Commission under the 5G-TOURS: SmarT mObility, media and e-health for toURists and citizenS (H2020-ICT-2018-2020 call, grant number 856950)

Demonstrating Immersive Media Delivery on 5G Broadcast and Multicast Testing Networks

This work presents eight demonstrators and one showcase developed within the 5G-Xcast project. They experimentally demonstrate and validate key technical enablers for the future of media delivery, associated with multicast and broadcast communication capabilities in 5th Generation (5G). In 5G-Xcast, three existing testbeds: IRT in Munich (Germany), 5GIC in Surrey (UK), and TUAS in Turku (Finland), have been developed into 5G broadcast and multicast testing networks, which enables us to demonstrate our vision of a converged 5G infrastructure with fixed and mobile accesses and terrestrial broadcast, delivering immersive audio-visual media content. Built upon the improved testing networks, the demonstrators and showcase developed in 5G-Xcast show the impact of the technology developed in the project. Our demonstrations predominantly cover use cases belonging to two verticals: Media & Entertainment and Public Warning, which are future 5G scenarios relevant to multicast and broadcast delivery. In this paper, we present the development of these demonstrators, the showcase, and the testbeds. We also provide key findings from the experiments and demonstrations, which not only validate the technical solutions developed in the project, but also illustrate the potential technical impact of these solutions for broadcasters, content providers, operators, and other industries interested in the future immersive media delivery.Comment: 16 pages, 22 figures, IEEE Trans. Broadcastin

Метод вибору оптимальної тривалості префіксу OFDM символів в супутникових каналах зв'язку аеронавігаційної системи

To study the method of selecting the optimal duration of the prefix OFDM-symbols in satellite communication channels, the original model of the communication line "Aircraft satellite-ground station" was built. The adaptive modulation model consists of an information source, an aircraft transmitter, an uplink / downlink, a satellite transponder, and a ground station receiver. OFDM technology for combating the effects of multipath is considered. The method of combating intersymbol interference based on the use of OFDM technology has been improved.Для исследования метода выбора оптимальной продолжительности префикса OFDM-символов в спутниковых каналах связи была построена оригинальная модель линии связи «Самолет-спутник-наземная станция» с помощью программного обеспечения MATLAB Simulink. Модель с адаптивной модуляцией состоит из источника информации, летательного передатчика, восходящей / нисходящей линии связи, спутникового транспондера и приемника наземной станции. Рассмотрена технология OFDM для борьбы с последствиями многолучевости. Усовершенствован метод борьбы с Межсимвольные интерференцией на основе использования технологии OFDM.Для дослідження методу вибору оптимальної тривалості префіксу OFDM-символів в супутникових каналах зв’язку була побудована оригінальна модель лінії зв'язку «Літак-супутник-наземна станція» за допомогою програмного забезпечення MATLAB Sіmulіnk. Модель з адаптивною модуляцією складається з джерела інформації, літального передавача, висхідної / низхідної лінії зв'язку, супутникового транспондера та приймача наземної станції. Розглянуто технологію OFDM для боротьби із наслідками багатопроменевості. Удосконалено метод боротьби із міжсимвольною інтерференцією на основі використання технології OFDM

Basic characteristics of networks with self-similar traffic simulation

This paper is devoted to simulations the networks with self-similar traffic. The self-similarity in the stochastic process is identified by calculation of the herst parameter value. Based on the results, received from the experimental research of network perfomance, we may conclude that the observed traffic in real-time mode is self-similar by its nature. Given results may be used for the further investigation of network traffic and work on the existing models of network traffic (particularly for new networks concepts like IoT, WSN, BYOD etc) from viewpoint of its cybersecurity. Furthermore, the adequacy of the description of real is achieved by complexifying the models, combining several models and integration of new parameters. Accordingly, for more complex models, there are higher computing abilities needed or longer time for the generation of traffic realization

Basic characteristics of networks with self-similar traffic simulation

This paper is devoted to simulations the networks with self-similar traffic. The self-similarity in the stochastic process is identified by calculation of the herst parameter value. Based on the results, received from the experimental research of network perfomance, we may conclude that the observed traffic in real-time mode is self-similar by its nature. Given results may be used for the further investigation of network traffic and work on the existing models of network traffic (particularly for new networks concepts like IoT, WSN, BYOD etc) from viewpoint of its cybersecurity. Furthermore, the adequacy of the description of real is achieved by complexifying the models, combining several models and integration of new parameters. Accordingly, for more complex models, there are higher computing abilities needed or longer time for the generation of traffic realization

Методология повышения эффективности функционирования сотовых сетей связи

В роботі було розроблено методологію підвищення ефективності стільникових мереж зв’язку, яка полягає у використанні удосконалено методу планування мережі стільникового зв’язку для розгортання стільникових мереж нового покоління, методу оцінки ключових показників функціонування мережі стільникового оператора з метою безперервної оптимізації мережі оператора шляхом використання методу оптимізації підсистеми базових станцій розгорнутої мережі стільникового оператора, удосконаленого методу розвантаження радіо інтерфейсу мережі стільникового оператора із використанням підмережі Wi-Fi (Wireless Fidelity), методу оптимізації багаторівневого транспортного сегменту стільникової мереж, удосконаленого методу маршрутизації із резервуванням ресурсів та балансуванням навантаження транспортної мережі стільникового оператора, методу оцінки ефективності програмно-конфігурованої мережі та методу мережецентричного моніторингу та реагування на кіберінциденти в мережі оператора стільникового зв’язку. За допомогою розробленої методології операторам стільникового зв’язку вдається підвищити ефективність функціонування своїх мереж за рахунок збільшення радіусу зон обслуговування абонентів стільникових мереж, мінімізації необхідної кількості базових станцій для побудови мережі, збільшення вдвічі кількості активних абонентів, які обслуговуються в стільнику та забезпечення балансування навантаження в радіопідмережі, підвищення економічної ефективності транспортної мережі, підвищення рівня надійності мережі, оптимізації утилізації транспортних каналів, проведення більш гнучкого та оперативного розширення мережі, запровадження нових сервісів, підвищення оперативності доставки даних для ієрархічної структури рівня управління. Отримані наукові результати доцільно використовувати під час планування безпроводових мереж стандарту LTE та 5G, розробки обладнання та програмного забезпечення для систем передачі даних, а також в навчальному процесі.Диссертация посвящена вопросам разработки методологии повышения эфективности сотовых сетей связи. В работе был проведен анализ качества обслуживания абонентов сотовых сетей в Украине с целью определения их эффективности. Было установлено, что заявленные требования к сетям четвертого поколения не достигаются ни в одной из реализованных сетей, а фактическое качество обслуживания абонентов находится на достаточно низком уровне, что свидетельствует о низкой эффективности существующих методов планирования радиосетей, транспортных подсистем и методов управления. В работе были предложены альтернативные стратегии развития операторов сотовой связи в Украине. В работе впервые разработана методология повышения эффективности сотовых сетей связи, заключающаяся в использовании усовершенствованного метода планирования сети LTE для развертывания сотовых сетей нового поколения, метода оценки ключевых показателей функционирования сети сотового оператора с целью непрерывного оп-тимизации сети оператора путем использования метода оптимизации подсистемы базо вых станций развернутой сети сотового оператора, усовершенствованного метода рас-погрузки радио интерфейса сети сотового оператора с использованием подмел-режиме Wi-Fi, метода оптимизации многоуровневого транспортного сегмента сотовой сетей, метода резервирования ресурсов и балансировки нагрузки транспортной ме-режи сотового оператора и метода оценки эффективности программно-конфигурируемых сети. С помощью разработанной методологии операторам сотовой связи удается повысить эффективность своих сетей за счет увеличения радиус зон обслуживания абонентов сотовых сетей, минимизации необходимого количества базовых станций для построения сети, увеличение вдвое количества активных абонентов, обслугвуються в базовой и обеспечения балансировки нагрузки в радиопидмережи, повышение економинои эффективности транспортной сети, повышение уровня надежности сети, оптимизацией утилизации транспортных каналов, проведение более гибкого и оперативного расширения сети, внедрение новых сервисов, повышения оперативности доставки данных для иерархической структуры уровня управления.The amount of traffic carried over wireless networks is growing rapidly and is being driven by many factors. Chief among them is the tremendous growth in multimedia applications on mobile devices – streaming music and video, two-way video conferencing and social networking to name a few. The telecoms industry is undergoing a major transformation towards 5G networks in order to fulfil the needs of existing and emerging use cases. The 5G architecture should seamlessly support both fixed and mobile access technologies under a fully converged end-to-end system in order to deliver future service requirements for some of the deployment scenarios that could be supported. This technologies in nearest future have come to Ukraine too. That’s why in this dissertation an analysis of the quality of service of subscribers of cellular networks in Ukraine was conducted in order to determine the efficiency of their operation and security. An analysis of the quality of customer service in the implemented projects of LTE networks in the world and 4G networks in Ukraine has established that the claimed requirements for fourth generation networks are not achieved in any of the implemented networks, and the actual quality of customer service (target efficiency) is at a rather low level which indicates the low efficiency of existing radio network planning methods, transport subsystems, control and cybersecurity management methods. This made it possible to determine the directions by which it is necessary to increase the efficiency of the operation of cellular networks. In this dissertation were developed several methods to improve network efficiency. The method of planning of the network of the cellular operator enables cellular operators to more accurately assess the coverage of radio coverage areas, choose key indicators of service quality, more efficient frequency planning and capital cost calculation, which in turn allows us to assess the feasibility of constructing a cellular network option. On the basis of this advanced method, a training software (web-application) was developed to evaluate radio coverage zones of LTE network base stations. The method for evaluating key indicators of service quality, the level of information security and the efficiency of cellular networks makes it possible to assess the most important indicators of the quality of functioning and security of the cellular network network in order to continuously monitor and optimize them when introducing new services during customer service. The method for optimizing the subsystem of base stations allows to increase the radius of subscriber service areas of cellular networks, which allows minimizing the number of base stations for network construction, and therefore reduce the cost of the cellular operator to build the subsystem of the base stations, that is, increase the economic efficiency of the network. Improved method of the radio interface off-loading using a non-3GPP standard subnet allow to reduce the load on the radio interface of the network of the cellular network to an acceptable level, double the number of active subscribers, which are served in the cell, and provide load balancing and increase the efficiency of the radio subnetwork. The method of optimization of a multi-level transport segment of a cellular network has been developed, which allows to improve the structure of the transport network during the transition to new generations networks, providing the necessary capacity and increasing and improving the efficiency of the transport network. The method of routing with resource reservation and balancing of the traffic of a cellular operator with the consideration of information security requirements allows to increase the efficiency of the transport channels usage. The method for evaluating the effectiveness of a software-configured network allows for a more flexible and operational expansion of the network, the introduction of new services, increasing the efficiency of data delivery for the hierarchical structure. The method of network-centric monitoring and response to cyber incidents in the network of the cellular network allows real-time monitoring of the state of cyber security, its level and, consequently, the efficiency of the cellular network. On the base of these methods in this dissertation was developed cellular networks efficiency improving methodology, which is using the improved method of LTE network planning, the key method for assessing performance of the cellular operator for the purpose of continuous operator network optimizing using the method of base station subsystem optimization, improved method of radio interface of the cellular operator offloading using Wi-Fi, the method of optimization of multi-vehicle segment of the cellular network, the method of roating with resource reservation and load balancing of mobile operator and method of SDN network effectiveness evaluation. Using the developed methodology mobile operators can improve the efficiency of their networks by increasing the radius of the service areas, minimizing the required number of base stations for the construction of the network, doubling the number of active subscribers in the cell and provide load balancing in transport and radio network, increase transport network efficiency, enhance network reliability, optimize utilization of transport channels for a more flexible and rapid network expansion, introduction of new services and improved data delivery in the hierarchical structure of SDN. It is advisable to use the obtained scientific results when planning LTE and 5G wireless networks, developing equipment and software for data transmission systems, as well as in the learning process

Визначення залежності між параметрами стільникової мережі кубічним ермітовим сплайном

У роботі представлено метод визначення залежності між параметрами стільникової мережі KPI та KQI за рахунок використання кубічного ермітового сплайну. В першу чергу наведено теоретичний принцип розрахунку та побудови кубічного ермітового сплайну при задоволенні умов методу найменших квадратів. На основі цього для оцінки використання даного сплайну проведено експериментальне дослідження зі встановлення функціональної залежності між параметрами мережі KPI та KQI. На закінчення встановлено ступінь впливу кожногоз параметрів KPI на параметр KQI, що дає можливість провести статистичне вирівнювання часових рядів параметра KQI з подальшим середньостатистичним прогнозом даних. Бібл. 11, рис. 10

Research of Machine Learning Algorithms for the Development of Intrusion Detection Systems in 5G Mobile Networks and Beyond

The introduction of fifth generation mobile networks is underway all over the world which makes many people think about the security of the network from any hacking. Over the past few years, researchers from around the world have raised this issue intensively as new technologies seek to integrate into many areas of business and human infrastructure. This paper proposes to implement an IDS (Intrusion Detection System) machine learning approach into the 5G core architecture to serve as part of the security architecture. This paper gives a brief overview of intrusion detection datasets and compares machine learning and deep learning algorithms for intrusion detection. The models are built on the basis of two network data CICIDS2017 and CSE-CIC-IDS-2018. After testing, the ML and DL models are compared to find the best fit with a high level of accuracy. Gradient Boost emerged as the top method when we compared the best results based on metrics, displaying 99.3% for a secure dataset and 96.4% for attacks on the test set

The Impact of Agile Methodology on Project Success, with a Moderating Role of Person’s Job Fit in the IT Industry of Pakistan

Computing software plays an essential role in almost every sector of the digital age, but the process of efficient software development still faces several challenges. Effective software development methodology can be the difference between the success and failure of a software project. This research aims to evaluate the overall impact of Agile Software Development (ASD) on the individual, organizational, software development, and project management dimensions. For this purpose, we surveyed several software development professionals from a variety of backgrounds (experience, location, and job ranks) to explore the impact of ASD on the IT industry of Pakistan. Our analysis of the collected information is two folds. First, we summarized the findings from our surveys graphically clearly show the opinions of our survey respondents regarding the effectiveness of the Agile methodology for software development. Secondly, we utilized quantitative measures to analyze the same data statistically. A comparison is drawn between the graphical and statistical analysis to verify the reliability of our findings. Our findings suggest the existence of a strong relationship between effective software development and the use of Agile processes. Our analysis shows that the job fit of software development professionals and ASD are critical factors for software development project success in terms of cost, quality, stakeholders satisfaction, and time. Although the study focuses on the IT industry of Pakistan, the findings can be generalized easily to other developing IT industries worldwide