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Support of service quality demands in radio access networks of high speed variants of mobile networks
Kuruc, Jiří ; Skořepa, Michal (referee) ; Novotný, Vít (advisor)
The work deals with the developmental stages (Releases) of the third generation UMTS net-works. It explains a partial improvement from Release 99 to Release 5 and Release 6 to im-prove the quality parameters of a mobile data transmission. In the practical part, there are measured qualitative parameters of the third generation networks that are available in the Czech Republic: UMTS, HSDPA, CDMA 1xEV-DO Rev.0 and Rev.A and UMTS-TDD. The measurements give reasonably achievable data rates in both directions (downlink & uplunk), a response time, quality of VoIP calls, a dispersion, a data-loss and an ability to transmit video with different data flows. The other aspects especially an availability of coverage and end-user terminals have been assessed wihin the each network. The work is supplemeted with a laboratory, which is focused on a practical comparison of the basic parameters of data transmissions of 2G and 3G networks.
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Security system with mobile comunication
Novák, Petr ; Kučera, Pavel (referee) ; Macho, Tomáš (advisor)
The main aim of this work is to create such an electronical alarm system, which could be used at permanently or temporary inhabited areas or in cars. The advantage of this system is the possibility of the silent alarm, which is carried out by SMS. These messages are sent by to the owner or to the security company by GSM service. The first part of the project tries to solve the problem of guarded areas. It is necessary to deal with this problem, so that the system itself could work correctly. The second part describes the SMS contents and the way of communication between the microprocessor ATmega16 and the mobile phone Siemens C35 by AT commands. Up-to-date price comparison of these services, which are offered by mobile provider, are included in this part. The focus of the third part is hardware realisation of electronical alarm system. This part sloves connecting of battery backup, battery recharging in the mobile phone and analyses single sensors as well. In the last part the suitable algorithm with the help of a higher level programming language C is used for the microprocessor system.
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Mobile internet principles
Jehličková, Lenka ; Fencl, Josef (referee) ; Hanus, Stanislav (advisor)
Thesis concerns with mobile communications theory with focus on data transfer. In the introduction the history, the origin and individual mobile systems generations are described. It is followed by detailed description of second, third and fourth generation mobile systems. Frequency band allocation, signal processing, the system architecture itself, security management and basic features are also discussed. The GSM system is described together with individual data transmission types based on circuit switching – CSD and HSCSD and packet switching – GPRS and EDGE. For UMTS, FDD and TDD modes are listed as well as changes in individual releases, corresponding technologies and provided services. Next, there is the description of LTE and WiMAX systems, together with their improvements whose are part of the fourth generation of mobile systems. Last of the described systems is the still work in progress HAPS, also known as the system of stratospheric platforms. In the end important parameters are summarized and systems are compared with each other.
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Security system with mobile comunication
Novák, Petr ; Kučera, Pavel (referee) ; Macho, Tomáš (advisor)
The main aim of this work is to create such an electronical alarm system, which could be used at permanently or temporary inhabited areas or in cars. The advantage of this system is the possibility of the silent alarm, which is carried out by SMS. These messages are sent by to the owner or to the security company by GSM service. The first part of the project tries to solve the problem of guarded areas. It is necessary to deal with this problem, so that the system itself could work correctly. The second part describes the SMS contents and the way of communication between the microprocessor ATmega16 and the mobile phone Siemens C35 by AT commands. Up-to-date price comparison of these services, which are offered by mobile provider, are included in this part. The focus of the third part is hardware realisation of electronical alarm system. This part sloves connecting of battery backup, battery recharging in the mobile phone and analyses single sensors as well. In the last part the suitable algorithm with the help of a higher level programming language C is used for the microprocessor system.
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Mobile internet principles
Jehličková, Lenka ; Fencl, Josef (referee) ; Hanus, Stanislav (advisor)
Thesis concerns with mobile communications theory with focus on data transfer. In the introduction the history, the origin and individual mobile systems generations are described. It is followed by detailed description of second, third and fourth generation mobile systems. Frequency band allocation, signal processing, the system architecture itself, security management and basic features are also discussed. The GSM system is described together with individual data transmission types based on circuit switching – CSD and HSCSD and packet switching – GPRS and EDGE. For UMTS, FDD and TDD modes are listed as well as changes in individual releases, corresponding technologies and provided services. Next, there is the description of LTE and WiMAX systems, together with their improvements whose are part of the fourth generation of mobile systems. Last of the described systems is the still work in progress HAPS, also known as the system of stratospheric platforms. In the end important parameters are summarized and systems are compared with each other.
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Support of service quality demands in radio access networks of high speed variants of mobile networks
Kuruc, Jiří ; Skořepa, Michal (referee) ; Novotný, Vít (advisor)
The work deals with the developmental stages (Releases) of the third generation UMTS net-works. It explains a partial improvement from Release 99 to Release 5 and Release 6 to im-prove the quality parameters of a mobile data transmission. In the practical part, there are measured qualitative parameters of the third generation networks that are available in the Czech Republic: UMTS, HSDPA, CDMA 1xEV-DO Rev.0 and Rev.A and UMTS-TDD. The measurements give reasonably achievable data rates in both directions (downlink & uplunk), a response time, quality of VoIP calls, a dispersion, a data-loss and an ability to transmit video with different data flows. The other aspects especially an availability of coverage and end-user terminals have been assessed wihin the each network. The work is supplemeted with a laboratory, which is focused on a practical comparison of the basic parameters of data transmissions of 2G and 3G networks.
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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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Development and Future Prospects of Mobile Internet Connection in the Czech Republic
Bičík, Petr ; Toman, Prokop (advisor) ; Dudová, Lenka (referee)
Mobile telecommunications belong to one of the fields which still evolves and it is expected that in the future they are going to offer great benefit to the whole world. This work focuses on current and future development of mobile Internet connection in the Czech Republic. At first the technologies used to provide mobile Internet connection are described and compared and then the situation (in terms of technologies and mobile operators) in the Czech market is outlined and its possible evolution in the near future is presented. Furthermore, the tarifs of mobile operators are compared with those in place two years ago. The strengths and weaknesses of the current mobile Internet connection are evaluated based on the conducted questionnaire survey. The latest results are then analyzed and compared with the results from a previous survey conducted in 2007 as part of a bachelor's thesis, which has been further extended in this mater's thesis.
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