|
|
Optimization of transport network configuration
Švec, Adam ; Polívka, Michal (referee) ; Škorpil, Vladislav (advisor)
The communication networks, that we know nowadays has been changing since the time when Alexander Graham Bell discovered the great invention of that time – the telephone. It was mainly the level of the technique and electronics that helped to improve the first systems of connection between each other. This process caused the first communication networks. All the changes were done on the field of the radio operation. The networks were analog and were contained mainly by metallic – cooper wire. On the field of radio communication were mainly electromagnetic waves which maintained the connection of the places where was not able to stretch trunk cables. Communication has made huge qualitative improvement. This process has used different types of wire that were able to transmit higher and higher frequencies and to raise a number of made connections. All those changes were involved in radio network. In 1950s the entertainment was made mainly through television broadcast. This improvement needed the new studios and broadcast systems and also the radio improved. In that time there was huge automatic PBX equipped with stepper drivers matrix switches. The networks started to be divided into access drivers which resulted from the subscriber terminal to the first connection point, for example, the first public telephone exchange. Among these exchanges was formed their interlinking transport or transportation network, to finally, after reaching the target (last panel) would be merged back into the network access for remote users. The aim is to describe some properties of transport networks, the contemporary, which has been fully digital technology. We will focus on data networks, i.e. those that are available to contemporary man, and describe some of the technologies and components that can be used. We meet with OPNET Modeler software and the philosophy of working with him. We recommend optimalization of the designed transportation network on the basis of OPNET Modeler simulation results. Afterwards we design a suitable laboratory task for bachelor degree students of Teleinformatics.
|
|
|
Project documentation for the design of data networks
Gajdošík, Ivo ; Mišurec, Jiří (referee) ; Mrákava, Petr (advisor)
This Master’s thesis deals with project of blueprints for installation of data cabling in specific building following regulations. Theoretical part describes basic overview of used regulations and principles of data networks with focus on Ethernet and Wi-Fi standards. Separated chapters cover passive layer of data networks and computer-aided-design. Practical part contains implementational and architectural drawing of data network project in multipurpose building. According to these plans the project could be realized.
|
|
|
Remote measuring systems and its utilization in practise
Kukla, Zdeněk ; Škoda, Jan (referee) ; Baxant, Petr (advisor)
This master’s thesis is dealing with remote measuring systems and their utilization in power engineering. In the first part there are described requirements on an autonomous measuring system and description of AMM and AMR systems. Communicating and data flows working on accurately defined communicating layers are also depicted in this part. The attention is devoted to the possibility of data processing and functions of devices offered by these attributes. In the following part there are described reasons for utilization of remote measuring systems in power engineering and the main advantages of connection of more devices into one unit. After finding of required parametres and functions of systems, a suggestion of terminal device is created in the same way. The suggestion is described in the measuring part with A/D converter, processing in microprocessor, measuring and evaluating alogorithms and attributes of communication of bus used. The last part is devoted to utilization of remote analysis in small power stations in dispersed production. Formation of deformation of voltage, harmonic analysis of signal and its application for data processing are described there. Described analysis was tested on data acquired from a cogeneration unit.
|
|
|
Mechanisms of QoS assurance in fixed, wireless and mobile data networks
Václavek, Radovan ; Novotný, Vít (referee) ; Molnár, Karol (advisor)
This bachelor´s thesis deals with mapping technologies and base parameters used to guarantee the quality of systems in the local area networks, including wireless and mobile ones. I have focused mainly on requests and classifications, which are typical for the types of networks on link layer. In Ethernet I focused on the gradual trends in the fore mentioned technologies and IEEE 802.1Q and connected IEEE 802.1p standards included. The next part describes the quality of systems in wireless nets in different types of environments and again uses given standards for quality of systems guarantee in 802.11e and connected 802.11a/b/g standards. The next part focuses on the latest generations of mobile nets, looking at the types and trends of the latest technologies. Here I draw from standard project 3GPP, which describes the problems with these technological developments. The next part focuses on WiMAX technologies. In the penultimate paragraph, the constituent network technologies are compared from the view of securing QoS and I propound possible ways of securing coversion of constituent technologies. The conclusion summarises all the technologies I have mentioned and the future trends including possible problems and challenges with these latest technologies.
|
guest ::
