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Free-Space Optics data link
Šála, Jakub ; Číž, Radim (referee) ; Šporik, Jan (advisor)
In this thesis, shows a current issue for free space optics, limiting their use in practice with regard to the availability and reliability. They conducted measurements on wireless optical links and the observed values is calculated by the availability of the connection. Subsequently, measurements are performed on alternate versions of wireless and copper connections. Observed values were compared with a wireless optical link. It is made of optical design of wireless connections at home.
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Creating a VPN Access Point on Raspberry Pi
Kovařík, Martin ; Hájek, Jaroslav (referee) ; Benedikt, Jan (advisor)
This bachelor thesis deals with creating a virtual private network (VPN) access point on a single-board Raspberry Pi computer. The theoretical part describes the principle of VPN, the most common tunneling protocols and the Raspberry Pi computer in general with its various generations and models. Selected protocols are implemented on the Raspberry Pi and their hardware load, response and throughput are measured. The stability of the protocols is tested and reliability evaluated.
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Commercial cellular networks for Critical Infrastructure
Uher, Tomáš ; Šilhavý, Pavel (referee) ; Krkoš, Radko (advisor)
This bachelor thesis discusses the possibilities of using commercial celluar networks to support the critical infrastructure of state, manufacturing and services. It also focus on special require ments for these systems. The last part of bachelor thesis deals with possibilites of support comummunication crtical end devices in the experimental celluar network of UTKO
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Measurement of transfer speeds and delays in computer networks
Bárdossy, Adrián ; Kubánková, Anna (referee) ; Jeřábek, Jan (advisor)
Bachelor thesis is interested in measurement of transfer rate and latency in computer networks. In the first part of thesis is defined, which motodics of measurement we know, various RFC and their specifications, also various parameters about measurement in computer networks like bit rate, capacity of channel, latency. In the second part are prepared users interfaces and softwares for applying the measurement of thesd parameters. In the last part is application of these softwares and creating and testing methodic of network measurement.
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Traffic management in wireless networks
Jánoš, Radan ; Novotný, Vít (referee) ; Lambertová, Petra (advisor)
The Master´s thesis „Traffic management in wireless networks“ discusses how to ensure Quality of Service in these networks. A term „traffic management“ is connected mainly with certain restrictions and prioritization of some services and traffics in network. The thesis contains an overview of the most used wireless technologies and describes the approach of these technologies to ensure QoS. Theoretical part of the thesis follows with the definition of general principles of traffic management in IP networks and provides an overview of network parameters used in evaluating the quality of different types of communications services. Practical part is focused on the most widely used wireless technology of standard 802.11 and also on implementation of remote administration system on a small SOHO routers. These systems allow the use of queueing disciplines to manage QoS. Designed and implemented HTB discipline is tested on a real traffic network model.
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Smart Forest: Utilization of 5G Networks for Fire Detection and Prediction
Popelka, Adam ; Možný, Radek (referee) ; Mašek, Pavel (advisor)
The goal of bachelor thesis was in teoretical part study and describe Internet of Things, found difference between H2H (Human to Human), M2M (Machine to Machine) and mMTC (Massive Machine Type Communication), describe LPWAN (Low Power Wide Area Network) in licensed and unlicensed frequency band and compare them. The next task was describe in detail technology in licensed frequency band NB-IoT and LTE Cat-M and choose ona of the technology for use in practical part. In teoretical part it should also be found description of application protocols for LWPAN as MQTT, CoAP, LWM2M and then describe security. The task in the practical part was to choose a communication technology, communication module and device that will be used to measure the temperature, take photos of the surrounding environment, and then send the obtained data to the server. In order to put the device into operation, a program must be created that will measure the ambient temperature at intervals, which it will evaluate and, in the event of and excess, take a picture of the environmet and send the data to the server.
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Creating a VPN Access Point on Raspberry Pi
Kovařík, Martin ; Hájek, Jaroslav (referee) ; Benedikt, Jan (advisor)
This bachelor thesis deals with creating a virtual private network (VPN) access point on a single-board Raspberry Pi computer. The theoretical part describes the principle of VPN, the most common tunneling protocols and the Raspberry Pi computer in general with its various generations and models. Selected protocols are implemented on the Raspberry Pi and their hardware load, response and throughput are measured. The stability of the protocols is tested and reliability evaluated.
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