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Signal propagation modeling for LPWA communication technologies
Pekárková, Kateřina ; Mašek, Pavel (referee) ; Možný, Radek (advisor)
At present, the area of LPWAN (Low Power Wide Area Network) wireless communication technologies is developing very dynamically, where the number of connected devices is rapidly increasing and thus the need to ensure implementation. An important part of the design and testing of a possible implementation of such an LPWA (Low Power Wide Area) network is the modeling of signal propagation in a given environment to ensure sufficient signal coverage. This work deals with the study of LPWAN wireless communication technologies operating in both the unlicensed frequency band and the licensed frequency band. In the practical part, the work focuses on the simulation of signal propagation using the simulation tool Wireless InSite, where the communication parameters were set according to WM-BUS (Wireless Meter Bus) technology.
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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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Universal Tester of Radio Conditions for Narrowband IoT Communication Technology
Možný, Radek ; Štůsek, Martin (referee) ; Mašek, Pavel (advisor)
Technology Narrowband IoT is a representative LPWA (Low Power Wide Area) tech-nology that due to its promising features aims for demands of the Internet of Thingsapplications for autonomous data sending from sensors in areas of poor mobile coverage.For such applications, it is beneficial to firstly map properties of communication technol-ogy in areas of intended use and evaluate whether or not is this technology applicable.This Master thesis deals with the design of the hand-held measuring device for evaluationof Narrowband IoT properties. The output of this thesis is firstly comparison of LPWAtechnologies secondly, design of the mentioned device and verification of its functional-ity. And in last part description of measurement of transmission delay for delay-tolerantapplications. Transmission delay is a critical parameter for delay-tolerant applications.Such an application can be, for example, smart electrometers for which there is definedmaximal allowed transmission delay of 10 seconds and therefore it is desirable to evalu-ate whether or not is the deployment of the communication technology Narrowband IoTsuitable in the intended area for delay-tolerant or even for delay-intolerant applications.
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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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Design of IoT device communicating by using NB-IoT standard
Vörös, Ondrej ; Povalač, Aleš (referee) ; Miloš, Jiří (advisor)
This diploma thesis deals with the design of low-power IoT device communicating by using the NB-IoT standard. The theoretical part of the thesis is dedicated to the explanation of the principles and capabilities of communication in IoT networks Sigfox, LoRa and NB-IoT, and also its physical layer, network architecture, techonology principles and frequency bands used. The application part of the thesis is dedicated to design of the NB-IoT device from the system design through the selection of main components to the detailed physical design of the device. Two prototypes of the device with two different radio modules used are fabricated on which is performed measurement of the power profile of the device in various operation modes.
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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.
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Automatic Detection of a Vessel Mooring at an Anchor Buoy in LPWAN Networks
Kejík, Petr ; Klusáček, Stanislav (referee) ; Kopečný, Lukáš (advisor)
This Master’s thesis deals with the design and construction of a maintenance-free unit for the detection of vessel mooring to an anchor buoy. The unit is powered by a battery with the possibility of running from another alternative source of power, in this particular case a solar panel. For wireless communication, the unit uses LoRa and NB-IoT technologies working in the LPWAN networks. During the designing phase, emphasis is placed on aspects such as maintenance-free duty, minimal consumption and the possibility of mounting on any type of buoy. The thesis also deals with the mechanical design of the device and design of the prototype of the detection element. The work is created in a cooperation with Netlia IoT s.r.o., which mainly deals with the custom production of devices using smart sensors and LPWAN communication technologies.
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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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Universal Multi-Rat Tester For Mmtc Applications
Juráň, Radovan ; Možný, Radek
While the IoT has made significant progress along the lines of supporting its individualapplications, there are many massive Machine-Type Communication (mMTC) scenarios in which theperformance offered by any single Radio Access Technology (RAT) available today might be insufficient.To address these use cases, we introduce the concept of multi-RAT tester, which implies theavailability and utilization of several RATs within a single IoT device. We begin by offering insightsinto which use cases could be beneficial and what the key challenges for mMTC implementation are.We continue by discussing the potential technical solutions and employing our own prototype of amulti-RAT device capable of using different Low-Power Wide-Area (LPWA) communication technologies.It is assumed that use of multiple radios simultaneously will lead to overall improvementof communication parameters by leveraging the synergy between RATs. The novel vision enabledby the multi-RAT concept in this work could be impactful across multiple fields and calls for crosscommunityresearch efforts in order to adequately design, implement, and deploy future multi-RATmMTC solutions.
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