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Data transmission in mobile networks
Bílek, Petr ; Molnár, Karol (referee) ; Havelka, Dušan (advisor)
The Bachelor’s thesis deals with mapping and usage of mobile networks of data transfers. It describes every particular generation of networks and technologies that they can use. This thesis is divided into two main parts, theological and practical. In the first part, the technologies of the second and third generation currently used for data transfer in mobile networks are described there. This concerns especially GPRS, EDGE and UMTS services. The thesis focuses on modulations used for these technologies, together with the coding and bit rates possible. It compares their advantages and disadvantages and presents their utilization among national operators. It also tries to sketch out the way the data services of mobile networks will proceed. The second part of the thesis is also divided into two parts. The first one is the simulation of the UMTS network with the assistance of the OPNET Modeller 14.5 environment. In this case, the thesis aims at two important characteristics - such as the dependence on the bit rate and distance of the primary station, and dependence on the bit rate and total load of the whole network. Both characteristics are observed mainly because of the bit rate and power characteristics. It describes objects and funcions of the OPNET environment. The next part in the practical section is the factual measurement of the Internet 4G service, provided by T-Mobile operator. The thesis focuses here on the presentation of the outcomes which were accomplished by the practical measurement of that service. The end of this thesis is dedicated to the comparasion of simulated outcomes with the outcomes practically measured, and to the conclusion of the results emerged from them.
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Position navigation system with GSM interface
Pristach, Marián ; Khatib, Nabhan (referee) ; Kadlec, Jaroslav (advisor)
The objective of the diploma thesis is to design a device for positioning of mobile devices using GPS satellites. When coordinates are acquired they can be sent via the GSM network to a user's cell phone or to an SQL server. A web interface has been designed to access the stored data and to show the current device position and the history. This position datalogging system can be used for monitoring vehicles as well as a security system for cars.
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Communication devices over GSM/GPRS
Prečan, David ; Růčka, Lukáš (referee) ; Herman, Ivo (advisor)
This master thesis deals with a data remote transmission by means of SMS and GPRS technology. The overview of current solutions is presented and then a remote temperature measurement and a data transmission employing a communication module GSM/GPRS TM1 through GSM network using GPRS technology is described. As a response to an impulse, the communication module sends SMS. The technical solution is described in details including HW and SW design of the data transfer and processing equipment using a ATmega 162 microprocessor. This equipment communicates with a server (PC), which displays the measured temperature. A prototype which was used for a validation of the design is also described.
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Application of GPRS module for real-time transmission of JPG files
Rusinský, Jan ; Hošek, Jiří (referee) ; Dostál, Otto (advisor)
This document describes a design procedure of interface between VGA camera and GSM/GPRS modem for displaying JPEG pictures captured by camera on website. Interface is realized by eight-bit micricontroller ATMEL with application written in C language. For picture transfer to server a TCP/IP stack is implemented into modem. The document is divided into two main parts. The first part describes architecture of the system, used components (camera, modem, microcontroller) and electronic circuit design. The second part of the document is focused on the software for the system. Firstly operating system of modem is desribed, OpenAT development environment for modem application design and WIPsoft library, which is used to implement TCP/IP stack. Next is described application for microcontroller which controlls camera and modem. Last part of this document describes server application and web interface.
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Mobile internet in the Czech republic and abroad
Výborný, Vojtěch ; Žamberský, Martin (advisor) ; Bruckner, Tomáš (referee)
This bachelor deals with the mobile Internet in the Czech republic and world-wide. In the first part the development of the mobile Internet in the Czech republic from the beginning up till the current situation is addressed. The following part focuses on the analysis of the Czech providers' market and on respective technologies employed. In connection with this part the biggest providers of the mobile Internet in the USA are being analyzed. The next part outlines the anticipated development of mobile technologies. This forecast is based on analyses and own assumption. The final part consists of the analysis of markets, where T-Mobile is active.
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Mobile internet access options in the Czech Republic
Křižka, Radek ; Pour, Jan (advisor)
The topic of the presented thesis is description of mobile internet access in the Czech Republic and Slovakia. The theoretical part is focused on an individual description of the technologies, which are available in the Czech Republic, i.e. GSM, GPRS, EDGE, UMTS and HSDPA. The practical part aims at mobile network operators on the Czech and Slovak market. Each company is shortly introduced, concurrent offers and coverage are presented. Furthermore the possibilities of mobile internet access are compared one to each other. The contribution of this work is to provide a comprehensive picture of mobile internet access from the theoretical point of view, as well as from the practical.
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Internet connection for mobile users
Špírek, Martin ; Pavlíček, Luboš (advisor) ; Gála, Libor (referee)
In this work I am writing about more and more occurring phenomenon, which is opportunities to connect to the internet for mobile users. I am describing and comparing technology to serve those internet users who need to connect from different locations, or require a connection to the internet on their travels. In the first part of thesis I am explaining the most important and frequently occurring terms, which will help to better understanding and orientation in other parts of the work. The chapter "Definition of basic terms" is followed by chapter "Wireless technology connection" in which are described in greater detail the various technologies available for wireless internet connections and also the advantages and disadvantages of this connections. The second part of my work is focused more practical. There are mentioned real possibilities how to connect wireless to the internet available in the Czech Republic and they are compared with each other. There is also a comparison of mobile operators and their services, which are involved in providing internet access. I tried to also explain here what type of connection is suitable for whom. There are also given here the results of the measurements of speed and quality connection provided by mobile operators. The goal of my work is to acquaint readers with in these days very different wireless options how to connect to the internet and their basic characteristics and then comparing these technologies to facilitate the selection of potential users for the best type of connection.
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The development and the prespective of the mobile connectivity in Czech Republic
Fialová, Ivana ; Toman, Prokop (advisor) ; Knobloch, Jan (referee)
Tématem této práce je mobilní připojení k internetu v České republice. Jsou rozebrány jednotlivé technologie, které umožňují tento typ připojení. Mezi nejstarší patří GPRS spolu se svou technologickou nadstavbou EDGE (někdy zvanou také eGPRS). Nejnovější technologií připojení je UMTS, které se stává středem zájmu jak operátorů, tak uživatelů (jde zatím o nejrychlejší možnost mobilního připojení v České republice). Práce dále hodnotí srovnání nabídek jednotlivých operátorů v České republice (bráno s ohledem na stav v květnu 2006). Při porovnání bere v potaz finanční stránku připojení a územní dostupnost. Výhledy mobilního připojení v rámci České republiky jsou odvozeny z dosavadního vývoje, stavu ve světe a aktuálních ohnisek zájmu vědců.
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Development and Prospectives of Mobile Connection in The Czech Republic
Bičík, Petr ; Toman, Prokop (advisor) ; Čandík, Marek (referee)
Mobilní telekomunikace se staly nedílnou součástí našeho každodenního života a proto je jejich rozvoji věnována velká pozornost. Tato práce se pokouší podat současný pohled na problematiku mobilních telekomunikací, které slouží k bezdrátovému přenosu dat. Úvodní kapitola se zabývá historickým vývojem mobilního připojení v ČR. Dále jsou popsány jednotlivé technologie, které jsou využívány pro mobilní připojení k internetu. V závěru práce je nastíněn předpokládaný vývoj mobilního připojení na internet a jsou porovnány jednotlivé technologie. Na základě výsledků provedeného průzkumu jsou diskutovány silné a slabé stránky současného mobilního připojení.
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Mobile Connectivity Phenomenon
Štangl, Rastislav ; Toman, Prokop (advisor) ; Čandík, Marek (referee)
Bakalářská práce je zaměřena na oblast mobilního připojení do sítě internet. Popisuje jednotlivé technologie mobilního připojení dostupné v ČR a analyzuje aktuální statistické údaje o trhu. Autor v práci porovnává a zhodnocuje nabídky služeb mobilního připojení v ČR a tyto závěry aplikuje aplikuje v konkrétních modelových situacích. Práce předkládá výsledky testů mobilního připojení spolu s praktickými zkušenostmi a doporučeními autora. V závěru shrnuje aktuální dění a trendy v oblasti mobilního připojení.
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