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Laboratory exercises in NS3 enviroment for Advanced communication technology course
Vadkerti, Gabriel ; Mašek, Pavel (referee) ; Langhammer, Lukáš (advisor)
This master thesis deals with creating laboratory exercises for students in simulator NS-3, where the IPv4 and IPv6 protocols, unicast and multicast transmission types, quality of services in wireless networks, furthermore protocols TCP and UDP are analyzed. The first section describes the NS-3 network simulator, the Eclipse development environment and the method how to connect them. In the next section protocols IPv4 and IPv6 are presented, the structure of the headers and the technique of fragmentation are described in detail. Based on this a laboratory exercise is created which deals with comparison of protocols IPv4 and IPv6. In the next section the types of transmissions are described, furthermore the multicast transmission type is explained more in detail. In the next practical section the second laboratory exercise is created, which deals with comparison of unicast and multicast transmission types. The subject of the following section is ensuring quality of services in data networks, the EDCA access method is discussed more in detail. In the next section the EDCA access method is implemented in a simulation as a laboratory exercise, in which the impact of the access category of EDCA to different transmission parameters is investigated. The next section deals with protocols TCP and UDP, furthermore with the structure of their headers. In the last section a laboratory exercise is created, in which the properties of the protocols TCP and UDP are compared.
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Ad Hoc Network Scenarios and Different Types of Attacks
Rexa, Denis ; Kenyeres, Martin (referee) ; Škorpil, Vladislav (advisor)
V tejto semestrálnej práci venovanej sieťam MANET a ich bezpečnostným hrozbám sa v prvej časti preberajú a porovnávajú smerovacie protokoly AODV vs OLSR vs ZRP. Ďalej je spomínaný broadcast storm a podrobnejšie rozobrané základné typy útokov v sieťach MANET s návrhmi na potlačenie vplyvu na fungovanie siete. V nasledujúcej kapitole je ukazané a popisané prostredie NS-3 simulátora s uvedeným jednoduchým programom a spôsobmi, ako získať údaje. Posledná kapitola ukazuje vplyv black-hole útoku na sieť a návrh na jej elimináciu.
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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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Development of evaluation model of MANET in NS-3 environment
Gilík, Aleš ; Vajsar, Pavel (referee) ; Hošek, Jiří (advisor)
This bachelor thesis is focused on Manet networks and creation of web application for generate configuration file which is simplifying simulation of Manet networks. The theoretical part concerns with description of Manet networks, distribution of routing protocols and closer look on five of the protocols. In the next part is described simulator Ns-3 with his content for simulations. The practical part is describing creation of configuration file and his elements. For that was created web application in PHP language. All used technologies for creation of the application are described in this thesis. The web application is fully processed and operational.
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Power line grid model
Csiba, Patrik ; Sláčik, Ján (referee) ; Mlýnek, Petr (advisor)
This diploma thesis analyzes the PLC communications in various scenarios. The first part of the thesis describes the principle of narrowband and broadband communication and the analysis of electrical lines. The next part describes the NS-3 framework, simulation scenarios for establishment the effect of branches and other parameters on the baud rate. The last part determines the minimum number of repeaters and their location on the extended topology.
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Experimental MANET network in NS-3 simulator
Vadkerti, Gabriel ; Langhammer, Lukáš (referee) ; Bartl, Milan (advisor)
This thesis deals with the problem of MANET networks. It presents routing protocols, their types, advantages and disadvantages. The protocols, such as AODV and OSPF, are analyzed in detail. The next section describes the NS-3 simulator and the meaning of its key codes. There are named and explained the most common mobility models and their correct writing into the source code. A MANET network simulation is created and a program for indicating the routes of packets through the network is introduced. The next describes traffic models for data networks. A simple traffic model for NS-3 and a program for graphic representation of this traffic were created. The DCE module for NS-3 is introduced in the last section and a demonstrational program of using Linux stack is created.
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Simulation of mobile ad hoc network in NS-3 environment
Kolaja, Lukáš ; Hrouza, Ondřej (referee) ; Hošek, Jiří (advisor)
The goal of this bacherlor thesis is theoretically analyze the principles of wireless mobile ad hoc networks. The thesis describes the types of routing protocols such as AODV, DSDV or OLSR. Further describes the types of mobility models which is typically used in MANET. The thesis also deals with issues like use, safety and development of mobile ad hoc networks. The goal of the practical part is create an application which can parse an XML document that generates simulation that is already created. The application is written in PHP language and output data from this application is inserted to the databse by using SQL commands. From the database is easy to read the data from the original XML document.
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Power line communication modelling in Network Simulator-3
Horák, Martin ; Zeman, Václav (referee) ; Mlýnek, Petr (advisor)
The diploma thesis deals with the issue of data transmission over power lines, focusing on simulation transmission functions. The theoretical part summarizes basic information on PLC technology and distribution networks, followed by analysis PLC simulator implemented in NS-third In the practical part of the thesis is described implementation of individual types of underground and overhead lines to the PLC simulator. Also been carried simulation scenarios for a simple topology and were designed own simulation scenarios for extended topology and simulations have been carried out various kinds of interference on communication.
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Modelling of mmWave Propagation Channel for Off-body Communication Scenarios
Zeman, Kryštof ; Vozňák, Miroslav (referee) ; Gaydamaka, Yulia (referee) ; Hošek, Jiří (advisor)
Předkládaná disertační práce je zaměřena na \uv{Modelování propagačního kanálu pro off-body komunikaci v oblasti milimetrových vln}. Navzdory pokrokům v rámci bezdrátových sítí v přímé blízkosti člověka stále systémy 5. generace postrádají dostatečnou šířku pásma a dostatečně nízkou odezvu. To je způsobeno neefektivním využíváním rádiového spektra. Tento nedostatek je potřeba co nejdříve odstranit a právě z tohoto důvodu je hlavním cílem této práce navrhnout vylepšený model rádiového kanálů pro off-body komunikaci. Úkolem tohoto modelu je umožnit uživatelům efektivněji a přesněji simulovat propagaci signálu v rámci daného prostředí. Navržený model je dále optimalizován a ověřen vůči nejnovějším měřením, získaným z literatury. Nakonec je tento model implementován do simulačního nástroje NS-3, pomocí kterého je následně využit k simulaci množství scénářů. Hlavním výstupem této práce je ověřený model přenosového kanálu pro off-body komunikaci v rámci milimetrových vln, společně s jeho implementací do simulačního nástroje NS-3, díky čemuž je dostupný pro širokou veřejnost.
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Design of laboratory tasks focused on the OLSR protocol.
Pecina, Martin ; Langhammer, Lukáš (referee) ; Kubánková, Anna (advisor)
An ad hoc mobile network is a collection of mobile nodes that are dynamically and arbitrarily located in such a manner that the interconnections between nodes are capable of changing on a continual basis. In order to simplify communication within the network, a routing protocol is used to discover routes between nodes. The primary goal of such an ad hoc network routing protocol is correct and efficient route establishment between a pair of nodes so that messages may be delivered on time. Route construction should be done with a minimum of overhead and bandwidth consumption. This document describes the Optimized Link State Routing (OLSR) protocol for mobile ad hoc networks. The key concept used in the protocol is that of multipoint relays (MPRs). MPRs provide an efficient mechanism for flooding control traffic by reducing the number of transmissions required.
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