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Network service testing with WAN network emulator and load simulators
Kocáb, Marek ; Krajsa, Ondřej (referee) ; Novotný, Vít (advisor)
The main task of this thesis was to explore the requirements of different telecommunications services on the network parameter, that are packet delay, packet loss, throughput, jitter. Make to test network service with WAN network emulator and load simulators. Next focus was to explore TCP congestion avoidance algorithms and focus on their throughput. The purpose of the first chapter is to introduce Quality of Service (QoS) for VoIP, video conversation, streaming audio, streaming video and data. The second chapter are to explore various types of delay, that are created from the sender through network device, transmission media to the recipient. The third chapter is to introduce NetDisturb application. It is application, that can emulate real properties of the data network and incoming traffic affect example packet delay, packet loss, bandwidth limit and so on. The key objectives of the fourth and fifth part is TCP protocol and TCP congestion avoidance algorithms. Hier are to introduce TCP protocol basic properties, congestion avoidance mechanisms and analysis of TCP congestion avoidance algorithms. In the practical part are created two laboratory exercises. First laboratory exercise is designed on the implementation QoS for various types of traffic. Second laboratory exercise is focused on the analysis TCP congestion avoidance algorithms and their throughput.
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Analysis of control procedures in 4th generation mobile networks
Schaller, Lukáš ; Zeman, Václav (referee) ; Novotný, Vít (advisor)
The subject of the diploma thesis are procedures in EPS network related to the operation of mobile terminals. In the introduction of my work I described the EPS system, including the quality of services and bearers. The following section focuses on control procedures in the EPS system such as attach network procedure, detach procedure, service request, handover or tracking area procedure. Further, three technologies for Internet of Things were described, namely EC-GSM-IoT, LTE-M and NB-IoT. All the procedures mentioned above were also captured in the experimental VUT EPS network and analyzed by TravelHawk using software M5 and Wireshark. Theoretical and practical findings were subsequently used out for setting of laboratory task for subject MKPM.
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VoLTE service implementation in EPS-IMS networks
Baev, Mikhail ; Koton, Jaroslav (referee) ; Novotný, Vít (advisor)
Diplomová práce popisuje VoLTE službu, vývoj a nasazení LTE (zaváděcí fázi, skutečný LTE stav a výhledy do budoucna atd.), EPC-IMS architekturu (popis funkce uzlu, rozhraní atd.) Komunikace mezi uzly a funkce, rozhraní a protokoly jsou používány v průběhu signalizace (SIP SDP) a datový tok (RTCP RTP). Práce stručně popisuje základní toky hovorů, typy nosičů (GBR and N-GBR), a to vytvoření / mazaní nosičů během komunikace. Další část diplomové práce o implementaci volte, instalace a konfigurace IMS. Závěrečná část diplomové práce popisuje zkoušky sítě a, analýzu protokolu.
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High speed mobile access using "Femtocell" solution
Novák, Vladimír ; Molnár, Karol (referee) ; Novotný, Vít (advisor)
This bachelor thesis describes principle of mobile networks, their generation and evolution. The infomation about data transfer and third ganeration of mobile system are written in detail because they are in tight context with main submission of the thesis. Next, the historical and technical information about Femtocells technologie (especially implementation, architecture, solving of providers) are mentioned. In practical part of the thesis the solving of Femtocells technologie for 100 family houses nearby bigger city is realized. Economic confrontation macrocells network with Femtocells component network is described. Calculation of Femtocells cost savings is done.
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Control plane analysis in 4G mobile networks
Nguyen, Filip ; Krkoš, Radko (referee) ; Novotný, Vít (advisor)
The aim of this paper is to introduce the LTE system, especially with the EPC system. Protocol analysis equipment of the system and the description of the signal at the fundamental procedures such as logging into the system, change the viewing area, handover, paging, etc. and were designed idikátory of system performance EPC.
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Central management of experimental data network
Meixner, Jaroslav ; Koutný, Martin (referee) ; Novotný, Vít (advisor)
The aim of this diploma thesis is design and implementation of experimantal data network central management in convergent network technology laboratory. This diploma thesis is devided into several chapters. Management network fundamentals are described in introduction. Actually used experimental network is analyzed in the second chapter. Design and implemantion of web modular information system are presented in third part. Solution of central management network system is summarised at the end of this thesis.
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Methods of multiple access for terrestrial radio networks
Žák, Josef ; Novotný, Vít (referee) ; Havelka, Dušan (advisor)
The content of this work is focused on the methods of multiple access for terrestrial radio network. These methods are exploited by the systems second and third generation of mobile networks. Specification the basic characteristics these methods is responsible part for inquest the correspondent specificities. Reason is that, that the wireless mobile communication it is possible split by three generation. First is NMT, with analog frequency modulation, which dont make use already, because has considerable disavantages . Analysis second generation mobile systems GSM leads to determination to many advanta- ges hereof system, who be based on methods FDMA, TDMA, CDMA. Description these methods is specialized on their spreading properties. Third generation of mobile systems UMTS is characterized wideband technology WCDMA, making use two duplex methods (FDD, TDD). Both methods provide higher efficiency of recovery frequency spectrum . All the theoretical approaches are examined in the last part of this work.it´s then possible after complete analysis these methods, make a design and a realization. In this event was used the computer programme Matlab–Simulink for simula- tion of duplex method WCDMA-FDD. Evaluation of this technology provides confrontation with second generation GSM .
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Acquisition of service information from current terminals of GSM and UMTS cell networks, service procedures for mobile terminals
Kříž, Jakub ; Skořepa, Michal (referee) ; Novotný, Vít (advisor)
This thesis concentrates on the UMTS cellular network and the possibilities of its monitoring. There are several methods of monitoring the UMTS. The technique used in this project is based on monitoring through a cellular terminal. The theoretical part is devoted to the description of the UMTS system and the WCDMA technique. The practical part then deals with the method of UMTS monitoring through a cellular terminal and describes in detail individual screens of the FTD (Field Test Display) program, the Netmonitor functions and their parameters. The next part of this thesis analyses the RRC messages, which were recorded during the realization of services (video calls, calls, data transfers) in the UMTS network. The last chapters of the thesis are briefly dealing with software and hardware servicing of cellular terminals. The attachment then offers two lab tasks, in which the students get acquainted with the UMTS network structure and the behaviour of the cellular terminal in this network.
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Generator of signalling tones for telephone exchange
Srnský, Petr ; Novotný, Vít (referee) ; Zeman, Václav (advisor)
The aim of this semestral thesis is the description and design of signal generator signals to the PBX using electronic components. The generator is used to generate a total of three rectangular signal harmonic signals and one sine wave signal, used for signaling in PABX. In the theoretical part are discussed and described the basic parameters of the alert signal and the ringing signal. In the practical part are designed individual blocks on signal generator. The generator is designed to lead in the panel permanently generated signals. The final section describes how the proposed generator function.
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Enterprise network management
Vaclík, Michal ; Zeman, Václav (referee) ; Novotný, Vít (advisor)
Master’s thesis discusses the design and implementation of network infrastructure for computer laboratory in Department of Communications. Thesis focuses on VLAN definitions and deployment of server virtualization, including network monitoring station.
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