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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.
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Practical Demonstrator for Maritime Navigation
Michálek, Aleš ; Pospíšil, Jan (referee) ; Mašek, Pavel (advisor)
This bachelor thesis deals with the issue of naval buoys and their types. The theoretical part is about the history, physical construction of buoys, different types of colors, and the rhythm of lights. In the second, practical part is described the process of creating a 3D model of a buoy, miniaturized HW for electrifying the buoy model, and programming the code for a given microcontroller. In the end, the possibility of further expansion options is outlined.
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Auto Rate Fallback (ARF) algorithm for wireless connection according to the standard 802.11g.
Zarković, Luka ; Mašek, Pavel (referee) ; Kubánková, Anna (advisor)
This bachelor thesis deals with problems of adaptation protocols and their implementation. In this bachelor thesis are described physical and MAC layers of standard 802.11g and theoretical analysis of adaptation protocols ARF and AARF. Further, the thesis describes the process of creating a network model suitable for testing and verifying the properties of adaptive protocols in the simulation environment NS-3 (Network Simulator 3). In the last part, the simulation results are described and processed into suitable graphs.
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Implementation of the LoRaWAN Communication Technology Using the Network Simulator 3
Mašek, Petr ; Pospíšil, Jan (referee) ; Mašek, Pavel (advisor)
The diploma thesis focuses on the description of LPWAN (Low Power Wide Area Network) technologies for use in IoT (Internet of Things) communication scenarios. The theoretical part compares communication technologies operating in the license-exempt frequency band, i.e. Sigfox and LoRaWAN (Long Range Wide Area Network). Furthermore, technologies using the licensed frequency spectrum are discussed, specifically, attention is focused on NB-IoT (Narrow Band IoT). Emphasis is placed on LoRaWAN technology and the properties of the unlicensed frequency band below the 1 GHz, which is utilized by this technology. The practical part of the thesis consists of the evaluation of simulation scenarios using an integrated module in the simulation environment NS-3 (Network Simulator 3). Attention is focused mainly on the analysis of data transmission success using selected communication parameters of LoRaWAN technology. The obtained simulation outputs with a focus on mMTC (massive Machine-Type Communication) communication scenarios confirm the relationship between the number of end devices and gateways, communication distance and transmission reliability, or the limit value for the duty cycle.
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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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Application for Wearables Running Apple WatchOS
Singh, Kevin ; Zeman, Kryštof (referee) ; Mašek, Pavel (advisor)
Bachelor work „Application for wearable electronics with Apple WatchOS system“ deals with theoretical analysis of M2M (Machine-to-Machine), H2H (Human-to-Human) and D2D (Device-to-Device) communication and wearable electronics. Later in the theoretical part, smart watch Apple Watch is described, which contains required WatchOS system. During compilation of this bachelor work were created two applications. One was made for iPhone and a second for Apple Watch. Both applications are able to show information about Internet connection and the user s location. The application for iPhone is also able to store data in the local and server s database.
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Virtualization of ARM architecture and development of a universal control platform for embedded systems
Páleník, Luděk ; Mašek, Pavel (referee) ; Zeman, Kryštof (advisor)
Bachelor thesis "Virtualization of ARM architecture and development of a universal control platform for embedded systems" deals with theoretical analysis of IoT devices, M2M communications and virtualization techniques -- especially emulation of different processor architectures. The practical part is implementation of the modified emulated image for CM-T43 module from Texas Instruments manufacturer. QEMU emulation tool installed on Linux operating system is used for emulation. Another part of this work is to develop an application that allows reading and writing of data from / to each sensor based on a serial line (RS-232, RS-485) and Ethernet. The application is written in language C and uses the MODBUS protocol.
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IP Television
Mašek, Pavel ; Fojtová, Lucie (referee) ; Číka, Petr (advisor)
The main objective of thesis is proposal and realization programme, which can be able to receive and play up multimedia stream broadcasted from server via packet networks. Protocol for transmission multimedia data is used to join connection between server and end point. And therefore protocols which handle data transmission like RTP/RTCP, RTSP and also SDP and SAP are described in thesis. Description mentioned records isn't effected to the smallest details, but acts about acquaint with problems. Further be brief described libraries that the stand by drafting application in view as well as used application that the function as the source of transmission multimedia. Than follows proposal solving and single step description of programme design in thesis. Analysis of working programme is performed in the last part of thesis.
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Design of a programmable attenuator
Pokorný, Rostislav ; Mašek, Pavel (referee) ; Štůsek, Martin (advisor)
This Master´s thesis focuses on design and implementation of programmable attenuator. The main aim of this thesis is to create an electronical device that provide continuous setting of attenuation value in the range between 0–150 dB. Setting a value from the range can be performed using buttons and set values are shown on display. For this thesis an attenuator with working frequency between 0–6 GHz was chosen and four–layer printed circuit board was designed. As a result the device is fitted with an 8bit microcontroller ATmega328P–PU using five 6bit digital attenuators connected in series with manual and program settings of attenuation from 0–157,5 dB with step of 0,5 dB. Data are shown on a build–in display. The application for remote settings and value reading over integrated USB (Universal Serial Bus) interface, was created in C#. In conclusion of this thesis there is a measurement evaluation of attenuation measurement performed on the device.
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Simulation of H2H and M2M Communications in Mobile Network LTE-Advanced
Číhal, Josef ; Mašek, Pavel (referee) ; Hošek, Jiří (advisor)
This bachelor thesis „Simulation of H2H and M2M communication in LTE-Advanced mobile network“ focuses on theoretical study of H2H (Human to Human) and M2M (Ma- chine to Machine) communication in fourth-generation of mobile network (LTE/LTE- Advanced). It also focus on the influence of M2M communication to compliance with the agreed terms of quality of service (QoS) for H2H traffic. Based on the theoretical analysis was created model of H2H and M2M communication using NS-3(Network Si- mulator 3). Last part of bachelor thesis deals with verification of the functionality of created model through simulations focusing on the key operational parameters such as delay, throughput and load of base station (eNodeB).
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