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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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Analysis of control procedures in 4th generation mobile networks
Schaller, Lukáš ; Zeman, Václav (referee) ; Novotný, Vít (advisor)
The subject of the diploma thesis are procedures in EPS network related to the operation of mobile terminals. In the introduction of my work I described the EPS system, including the quality of services and bearers. The following section focuses on control procedures in the EPS system such as attach network procedure, detach procedure, service request, handover or tracking area procedure. Further, three technologies for Internet of Things were described, namely EC-GSM-IoT, LTE-M and NB-IoT. All the procedures mentioned above were also captured in the experimental VUT EPS network and analyzed by TravelHawk using software M5 and Wireshark. Theoretical and practical findings were subsequently used out for setting of laboratory task for subject MKPM.
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