|
|
The Design of Stratospheric Probe and Flight Simulator
Lindtner, David ; Kopečný, Lukáš (referee) ; Gábrlík, Petr (advisor)
This bachelor thesis deals with the design of the stratospheric probe as a device for measuring the parameters of higher layers of the atmosphere. The influence of different parameters on the resulting flight profile is shown in the simulations. On the base of real meteorological probes flights the model of atmosphere is verified and is used to estimate the landing point of our probe. The work emphasizes the design of key probe components such as communication devices, battery sources and sensors. At the end of the thesis, the data from the real flight of our probe are displayed and evaluated.
|
|
|
Multi-radio Tester Utilizing LoRaWAN and Narrowband IoT Communication Technologies
Novotný, Jaromír ; Štůsek, Martin (referee) ; Mašek, Pavel (advisor)
This Master thesis is focused on the design and consequential realization of the Multi-RAT communication device. The theoretical part describes a comparison of two promising communication LPWA (Low Power Wide Area) technologies that are available to use in the Czech Republic. These technologies are NB-IoT (NarrowBand-Internet of Things) and LoRaWAN (Long Range Wide Area Network). The practical part contains a description used components, their consequential fitting and testing of designed printed circuit board of the device. The thesis also describes the implementation of software and realized measurement. Technical documentation of a device can be found in the appendix of this thesis.
|
|
|
Implementation of Communication Technology LTE Cat-M1 Utilizing the Network Simulator 3
Drápela, Roman ; Jeřábek, Jan (referee) ; Mašek, Pavel (advisor)
Diploma thesis deals with the implementation of LTE Cat-M1 technology in simulator NS--3 (Network Simulator 3). The theoretical part of the thesis summarizes key terms concerning IoT (Internet of Things), M2M (Machine-to-Machine) communication, LTE (Long Term Evolution) and LPWA (Low-Power Wide Area) networks. The practical part summarizes the possibilities of currently available modules for cellular technologies for NS-3, ie. the LENA module and the subsequent extension of LENA+ and ELENA. Simulation scenarios offer a comparison of LTE/LTE-A and LTE Cat-M1 (also known as eMTC - enhanced Machine Type Communication) technologies for M2M communication. The results of the simulations are well-arranged in the form of graphs and discussed at the end of the thesis.
|
|
|
Localization in LoRaWAN technology
Pospíšil, Jan ; Hošek, Jiří (referee) ; Fujdiak, Radek (advisor)
The diploma thesis in theoretical part focuses on LPWAN in general, meaning the low power wireless device falling into IoT category with a focus on LoRaWAN. The second half of the theoretical part focuses on describing localization techniques and principles in general and selection of one suitable technique for implementation in LoRaWAN. The practical part focuses on the proper HW customizations to enable the localization in this network. There are also described all the steps needed to build the whole working LoRaWAN network. The TDoA localization algorithm is described, the functionality is verified by simulation and also by testing under real conditions. In the end, the results are explained, the shortcomings of the technology are described and finally a suggestion for improvement is provided.
|
|
|
Software defined radio for LoRaWAN technology
Pospíšil, Ondřej ; Pokorný, Jiří (referee) ; Fujdiak, Radek (advisor)
This master's thesis deals with the description of LPWAN technologies focused on LoRaWAN technology in the theoretical part. The next part deals with description and analyzing of LoRaWAN protocol. In theoretical part also security elements of the LoRaWAN protocol are discussed and LoRaWAN 1.0.2 and 1.1.x versions are compared. The thesis also deals with LoRaWAN tapping and its decryption, both on the physical layer and the MAC protocol layer LoRaWAN. The thesis shows how to use software-defined radio to listen to LoRaWAN communication. Lastly, a replay attack and fake message over the fake session are performed
|
|
|
Coexistence of LTE and LoRa in the 2.4 GHz ISM band
Potočňak, Martin ; Staněk, Miroslav (referee) ; Polák, Ladislav (advisor)
This diploma thesis deals with the study and measurement of coexistence scenarios that can occur between the LTE and LoRa systems in the unlicensed ISM band 2.4 GHz. A common radio frequency band in which LTE and LoRa systems can coexist is defined. An appropriate laboratory measurement is proposed and realized, allowing automatized measurement of the defined coexistence scenarios. For this purpose, a personal computer, professional measurement equipment and software MATLAB are utilized. Functionality of the proposed concept is verified by extensive measurements. The obtained results are graphically shown and discussed in detail.
|
|
|
LoRa Signal Analysis using SDR
Jeřábek, Ondřej ; Fedra, Zbyněk (referee) ; Povalač, Aleš (advisor)
This work deal with analysis of LoRa wireless communication protocol and LoRaWAN MAC layer. Analysis aims to LoRa packet detection using software defined radio, wireless trafic and information which can be extracted (sniffed) from wireless communication between devices which uses LoRaWAN MAC layer. Next part of this work describes two wireless devices development. First one for demonstration purporses with some type of commercial LoRa modules and second to paralell sniffing of LoRa wireless communication on various frequency channels.
|
|
|
Secure Gateway for Wireless IoT Protocols
Hošala, Martin ; Hujňák, Ondřej (referee) ; Kořenek, Jan (advisor)
Táto práca bola zameraná na vytvorenie funkčného prototypu zabezpečenej brány pre bezdrôtové IoT protokoly s využítím BeeeOn IoT Gateway. Na vytvorenie výsledného riešenia bolo potrebné analyzovať existujúce zabezpečovacie systémy IoT, navrhnúť ich integráciu s BeeeOn Gateway a systém nasadiť. Ako zabezpečovacie systémy v tejto práci boli použité moduly NEMEA vyvinuté v rámci projektu SIoT. Výsledné riešenie beží na routeri Turris Omnia a pozostáva z BeeeOn Gateway, piatich detekčných modulov SIoT a ďalších modulov NEMEA potrebných pre plnú funkčnosť detektorov. Potenciálne hrozby sa zisťujú v sieťach Z-Wave, BLE a LoRaWAN. Používateľ môže so systémom interagovať prostredníctvom webového rozhrania systému Coliot, ktorý je tiež súčasťou výsledného riešenia a slúži na ukladanie a prezentáciu výsledkov detekcie. Funkčnosť systému bola overená experimentálne a množinou integračných testov. Testovanie odhalilo mnoho nedostatkov spojených s použitými podsystémami a väčšina z nich bola opravená. Výsledný systém sa používa sa v rámci projektu SIoT.
|
|
| |
|
|
Design of smart sensor equipped with LoRa technology
Šigut, Štěpán ; Pokorný, Jiří (referee) ; Štůsek, Martin (advisor)
Over the past years few trends have become as profound in the technology industry as yearly increases in battery capacity, transistor density and price drops for computing power. These trends follow a steep curve and drive what has become known as IoT or Internet of Things. Ever increasing number of devices connected to the internet are putting high demands on wireless network technologies. During the last decade several new wireless technologies have emerged and are competing to become the next go-to technologies for applications such as smart cities, smart cars and smart factories. LoRaWAN is one relatively new competitor to the market and is the central topic of this thesis.
|
guest ::
