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Secured vehicle monitoring using OBDII and LPWAN networks
Babeľa, Miroslav ; Mašek, Pavel (referee) ; Možný, Radek (advisor)
Automobily sa s vývojom technológie a vládnych nariadení stávajú viac a viac komplikované. To sa však stáva problémom nie lel pre individuálnych majiteľov vozidiel ale aj pre prevádzkovateľov flotíl, kde sa im zvyšujú náklady na údržbu a prestoje. Aby majitelia vozidiel mohli znížiť svoje náklady na minimum, mali by mať nainštalované jednoduchej monitorovacie zariadenie, ktoré ich môže upozornit na potenciálne problémy a predísť tak oveľa nákladnejším opravám. Cieľom tejto práce je vytvoriť zariadenie, ktoré sa umiestni pevne vo vozidle a bude monitorovať a odosielať doležíté motorické parametre na vzdialený server pre ďalšie spracovanie. V teoretickej časti práce sú opísané aktuálne OBD nariadenia, používané komunikačné protokoly v súčasných autách, dostupné nízkoenergetické siete pre rozsiahle územie (LPWAN) a navigačné systémy (GNSS). Praktická časť sa zaoberá návrhom OBD II ˙monitorovacieho zariadenia, ktoré podporuje najpoužívanejšie komunikačné protokoly v Európe, NB-IoT sieť a systém na určenie polohy. Posledná kapitola analyzuje výslednú cenu zariadenia a opisuje jej prípadnú optimalizáciu pre komerčné použitie.
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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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The design of an accurate rain gauge with the ability of real-time reading
Jílek, Jiří ; Mašek, Pavel (referee) ; Možný, Radek (advisor)
Rainfall estimation using point-to-point microwave links is a promising way to expand the rain gauge network in the future. However, this opportunistic measurement method is still in the research phase and faces several problems. This paper focuses on one of the problems of this research area, namely the insufficient number of existing rain gauges on the path of the microwave link for the correlation of measured data, by designing a portable rain gauge using data transmission to a remote server using narrowband internet of things (NB-IoT ) technology. To expand its capabilities, the device is also equipped with temperature sensors and a light level sensor. The device is designed with an emphasis on desirable low energy consumption, as it should be able to measure data even without the reach of the electrical network. The outcome of this work is the verification of the functionality of the device in a real environment and the evaluation of its suitability for the intended use case.
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Implementation of the LTE Cat-M Communication Technology Utilizing the NS-3
Le, Dinh Thao ; Kubánková, Anna (referee) ; Mašek, Pavel (advisor)
Diplomová práce se zabývá komunikační technologií Long Term Evolution Machine Type Communication (LTE-M) a její implementací v simulačním nástroji Network Simulator 3 (NS-3). Jako člen technologické skupiny Low-Power Wide-Area (LPWA) má LTE-M za cíl poskytovat konektivitu pro scénáře masivního nasazení koncových zařízení (mMTC). Hlavním cílem práce v teoretické části je objasnit charakteristiku LTE-M a dalších technologií ve skupině LPWA, a tím poukázat na jejich výhody, nevýhody a vhodné případy použití. Praktická část se snaží identifikovat limity sítě ve vztahu k maximálnímu počtu připojených zařízení. Dále je také popsána implementace funkcí úspory energie LTE-M do LENA modulu ve NS-3 a uvedeny výsledky simulace.
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Implementation and Evaluation of the LTE Cat-M Technology Using the Network Simulator 3
Santa, Roman ; Komosný, Dan (referee) ; Mašek, Pavel (advisor)
Diplomová práca obsahuje teoretický úvod technológie LTE Cat-M. Prvá kapitola obsahuje opis generácií mobilných sietí s dôrazom na 5G mobilné IoT technológie. V druhej kapitole je popísaný proces štandardizácie Massive Machine-type Communication (mMTC) organizáciou 3GPP. Kapitola taktiež obsahuje aplikované IoT komunikačné scenáre a prehľadné porovnanie Low-Power Wide-Area (LPWA) technológií. LTE Cat-M technológia je stručne popísaná v tretej kapitole. Dôraz je kladený na fyzickú vrstvu a alokáciu zdrojov. Simulačné prostredie a použité moduly sú objasnené na začiatku štvrtej kapitoly. Štvrtá kapitola sa ďalej zaoberá popisom jednotlivých simulačných scenárov a výsledkami simulácií. Simulácie sú rozdelené na dve hlavné kategórie, simulácia počtu koncových staníc a simulácia spotreby energie s využitím režímu úspory energie (PSM).
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Analysis of simulation tools supporting Network Slicing in 5G networks
Kislerová, Helena ; Mašek, Pavel (referee) ; Koláčková, Aneta (advisor)
The main goal of this bachelor thesis was to study the available network simulation tools supporting network slicing in 5G networks, their subsequent analysis and selection of the most suitable one based on this analysis. The second part of the work is focused on creating a simulation scenario in which the individual slices of the network are overloaded in some parts of the day. This scenario is then simulated and its results are evaluated at the end of the work.
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Implementation and Performance Evaluation of the LoRaWAN Communication Technology Utilizing the NS-3
Bahna, Martin ; Možný, Radek (referee) ; Mašek, Pavel (advisor)
The diploma thesis deals with an implementation of the LoRaWAN wireless network within the NS-3 simulation environment. The thesis defines IoT in general, together with its technologies and types of communication between devices. Subsequently, the LPWAN technology is outlined, as well as its requirements and protocols that are most widely used with this technology. The thesis then describes the LoRaWAN technology in detail, its layers, network architecture and security. The practical part of this thesis sheds some light on the NS-3 simulation environment and the most suitable LoRaWAN module that was selected from the available ones. The chosen module is described in detail and imported to the NS-3 simulation environment. Two simulation scenarios are then performed. The first scenario is focused on the impact created by increasing the number of end devices in the network. The second scenario is focused on the impact created by increasing the distance between the end device and the gateway. The results of the simulations are recorded in the tables which are then used to display the given results in graphs. Last chapter deals with module modification where new frequency bands are implemented and theoretical setup of duplex and encrypted communication is described.
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Laboratory Demonstrator for LPWA Technologies Enabling the Communication via the Lightweight M2M (LWM2M) Protocol
Dvořák, Radim ; Štůsek, Martin (referee) ; Mašek, Pavel (advisor)
As the number of wireless devices rises, so does the demand for reliable data transmission. To ensure the reliability of data transfers with such devices, suitable wireless technology, and a suitable transmission protocol have to be chosen according to the device capabilities and requirements. This thesis describes LPWA (Low-Power Wide-Area) technologies currently available on the market, both on licensed spectrum and non-licensed spectrum, focusing on licensed spectrum technologies (Narrowband Internet of Things, LTE-M) and also commonly used M2M enabled protocols for IoT devices. Furthermore, it compares those protocols from the communication parameters and data traffic perspectives with focus on overheads that further increase the amount of data transmitted but are necessary to ensure reliable data transmission. Lastly, it focuses on LWM2M protocol describing it to the detail and describes an LWM2M C++ library created as part of this thesis. In addition, a laboratory demonstrator was created utilizing this library.
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Implementation and Performance Evaluation of the LTE Cat-M1 Communication Technology Utilizing the NS-3
Drápela, Zbyněk ; Číka, Petr (referee) ; Mašek, Pavel (advisor)
The diploma thesis deals with LTE Cat-M communication technologies and its implementation in the NS-3 simulation tool using the 5G-LENA NR module. The theoretical part describes LPWA technologies available in the Czech Republic. It also focuses on the LTE-M standard and especially LTE Cat-M1, which are described in more detail. The practical part describes the possibilities of LTE Cat-M1 simulation using simulation scenarios available for the older version of NS-3, and also some modifications to the current version of NS-3 and the 5G-LENA NR module are designed and implemented.
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Implementation of IoT communication technologies in NS-3 simulation tool
Rehberger, Marek ; Mašek, Pavel (referee) ; Juráň, Radovan (advisor)
The bachelor thesis deals in its theoretical part with LPWA communication technologies in the licensed frequency spectrum, specific technologies LTE Cat-M1 and NB-IoT. The theoretical part summarizes the terms concerning to LPWAN (Low Power Wide Area Network), licensed and unlicensed technologies, SmartGrids, NB-IoT and LTE Cat-M1. The use of LPWA technologies in the field of SmartGrids is described and the idea of Smart Metering in buildings is used in the work. Subsequently, in the practical part for the LTE Cat-M1 technology, the implementation of communication scenarios for data transmission within SmartGrids is performed using the tools Network Simulator 3 (NS-3) and the LENA module. The results of the simulations are clearly processed in the form of graphs and tables.
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