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Multimedia Services in Mobile Networks
Kovář, Petr ; Molnár, Karol (advisor)
Long time ago, there were developed methods which can allow fast exchange of information at the longest distance possible. Until recent time, the possibilities of long way communications were very limited. There were technological and financial limitations mainly. With telegraph, telephone and the newest – computer networks invention, the telecommunication services became cheaper and much more comprehensive. With accession and high scale spread of internet, the role of communications is much more important. The most actual trend is mobile internet and connected multimedia networks and their instant accessibility from anywhere. On the first side there are classical telecommunication networks as GSM, UMTS, on the other side there is very strong alternative in shape of WiMAX and WiFi networks combination. For the usage of multimedia services in that networks is very important to handle their prefferization over other traffic, which is very difficult task even on wireless media. For the finding of new processes and methods, which can allow it, there is, at fist, the need for highly accurate and authentic mathematical models. In this doctoral thesis is mapped actual state of the art and proposed the new mathematical model of Distribution Coordination Function, which is much-frequent used as access method in 802.11 networks, Wi-Fi.
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OSPFv3 dynamic routing protocol for MANET networks in OPNET Modeler simulation environment
Henzely, Július ; Skořepa, Michal (referee) ; Růčka, Lukáš (advisor)
This bachelor's thesis includes theoretical knowledge about fundamental informations related to functionality of mobile networks, with focus on MANET routing protocols. The project contains an overview of routing protocols, especially OSPFv3 routing protocol. In the practical section of project, there is a brief description of OPNET Modeler simulation environment and the process of establishing the network with configured routing protocol in it. The project also describes a procedure for extending of the Hello packet structure by a field containing node traffic speed in OPNET Modeler.
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Wireless Networks Displaying on PDA
Liška, Jan ; Kočí, Radek (referee) ; Hanáček, Petr (advisor)
This work deals with design and realization od an application for Pocket PC which displays wireless networks on a map. The goal of this project is to display signal coverage of an area together with a base station. This paper also deals with GSM localization. The main part describes station position calculation, concept and implementation of the application. In the end there are suggestions for future development of the application.
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OSPFv3 dynamic routing protocol for MANET networks in OPNET Modeler simulation environment
Henzely, Július ; Skořepa, Michal (referee) ; Růčka, Lukáš (advisor)
This bachelor's thesis includes theoretical knowledge about fundamental informations related to functionality of mobile networks, with focus on MANET routing protocols. The project contains an overview of routing protocols, especially OSPFv3 routing protocol. In the practical section of project, there is a brief description of OPNET Modeler simulation environment and the process of establishing the network with configured routing protocol in it. The project also describes a procedure for extending of the Hello packet structure by a field containing node traffic speed in OPNET Modeler.
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Wireless Networks Displaying on PDA
Liška, Jan ; Kočí, Radek (referee) ; Hanáček, Petr (advisor)
This work deals with design and realization od an application for Pocket PC which displays wireless networks on a map. The goal of this project is to display signal coverage of an area together with a base station. This paper also deals with GSM localization. The main part describes station position calculation, concept and implementation of the application. In the end there are suggestions for future development of the application.
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Detection of SPAM Messages in Mobile Communication and Social Networks
Jaroš, Ján ; Rychlý, Marek (referee) ; Očenášek, Pavel (advisor)
This thesis deals with spam in mobile and social networks. It focuses on spam in SMS messages and web service Twitter. Theoretical part provides brief overview of those two media, informations about what spam is, how to defend against it and where does it comes from. There is also a list of methods for spam detection, many of them have their roots in filtration of email communication. The rest of thesis is about design, implementation of application for spam detection in SMS and Twitter messages and evaluation of its performance.
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Multimedia Services in Mobile Networks
Kovář, Petr ; Molnár, Karol (advisor)
Long time ago, there were developed methods which can allow fast exchange of information at the longest distance possible. Until recent time, the possibilities of long way communications were very limited. There were technological and financial limitations mainly. With telegraph, telephone and the newest – computer networks invention, the telecommunication services became cheaper and much more comprehensive. With accession and high scale spread of internet, the role of communications is much more important. The most actual trend is mobile internet and connected multimedia networks and their instant accessibility from anywhere. On the first side there are classical telecommunication networks as GSM, UMTS, on the other side there is very strong alternative in shape of WiMAX and WiFi networks combination. For the usage of multimedia services in that networks is very important to handle their prefferization over other traffic, which is very difficult task even on wireless media. For the finding of new processes and methods, which can allow it, there is, at fist, the need for highly accurate and authentic mathematical models. In this doctoral thesis is mapped actual state of the art and proposed the new mathematical model of Distribution Coordination Function, which is much-frequent used as access method in 802.11 networks, Wi-Fi.
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CURRENT STATE OF MOBILE INTERNET IN THE CZECH REPUBLIC AND POSSIBILITIES OF ITS UTILIZATION IN VERY SMALL BUSINESSES AND TRADERS
Kysela, Jiří ; Bruckner, Tomáš (advisor) ; Novotný, Miroslav (referee)
This thesis presents/offers a comprehensive view of the issue of mobile Internet aimed at very small businesses and traders. In my thesis I focus on the practical applicability of mobile Internet by means of mobile technologies in the forenamed undertakings. First part of the thesis deals with the methodology of the area of very small businesses and traders and analyses present possibilities of application of mobile technologies and their suitability and usability for very small businesses and traders. Second part of the thesis identifies types of undertaking that can take advantage of mobile Internet and shows that this technology entails time and funds saving. Third part demonstrates concrete applications of mobile Internet in the activities of undertakings and presents the possibilities of gaining a support from the European Union structural funds for the implementation of mobile Internet.
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