1. Impact of hybrid queing disciplines on the VoIP traffic delaySaša Klampfer, Jože Mohorko, Žarko Čučej, 2009, original scientific article Abstract: Impact of hybrid queuing disciplines on the VoIP traffic delay
Keywords: hibridne metode, načini uvrščanja, VoIP, zakasnitev, ožičeno omrežje, hybrid methods, queuing disciplines, VoIP, delay, wired network
Published in DKUM: 10.07.2015; Views: 1310; Downloads: 26
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2. Graphʼs theory approach for searching the shortest routing path in RIP protocol : a case studySaša Klampfer, Jože Mohorko, Žarko Čučej, Amor Chowdhury, 2012, original scientific article Abstract: Routing is a problem domain with an infinite number of final-solutions. One of the possible approaches to solving such problems is using graph theory. This paper presents mathematical analysis methodologies based on circular graphs for solving a shortest path routing problem. The problem is focused on searching for the shortest path within a circular graph. Such a search coincides with the network routing problem domain. In this paper, we introduce in the detail all necessary parts needed to understand such an approach. This includes: definition of the routing problem domain, introduction to circular graphs and their usage, circular graphʼs properties, definition of walks through a circular graph, searching and determining the shortest path within a circular graph, etc. The state of the art routing methods, implemented in contemporary highly sophisticated routers, includes well-known weight-based algorithms and distance-vectors-based algorithms. The proposed solution can be placed between the two abovementioned methods. Each of these known methods strives for optimal results, but each of them also has its own deficiencies, which should be rectified with the proposed new method. This theoretically presented method is argued by a practical example and compared with the RIP (Routing Information Protocol) technique, where we look for the shortest path and possible walks through a specified circular graph.
Keywords: circular graphs, shortest path, graph diameter, walk through, CIGRP, connectivity matrix, network topology, symmetry, fully connected graph
Published in DKUM: 10.07.2015; Views: 2265; Downloads: 85
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3. Mathematical model of IRIS replication mechanism for the simulation of tactical networksJože Mohorko, Matjaž Fras, 2009, original scientific article Abstract: The Multilateral Interoperability Programme (MIP) was established to promote more successful and better harmonized operational functions for international peace-keeping forces. The C2IEDM/JC3IEDM (Command and Control Information Exchange Data Model) ensures the interconnection of Command and Control Information Systems (C2ISs) throughout all levels, from the corps down to the lower ranks. The usability of C2ISs highly correlates with the capacities of data information carriers, and the need is growing for greater capacity and reliability of transmission media and cryptographic message security. Simulation of tactical networks is an important task in planning military missions. Such methodologies assure a higher probability of success during critical tactical operations. This article focuses on a new radio network modeling method for the C2IS, which is verified by the OPNET simulation environment. This modeling method can be used in tactical radio network planning and optimization processes.
Keywords: communications, tactical networks, tactical radio networks, traffic modelling, radio network modeling, simulations, C2IS
Published in DKUM: 01.06.2012; Views: 2156; Downloads: 102
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9. Predstavitev projekta ciljnega raziskovalnega programa znanost za mir: modeliranje informacijskih sistemov poveljevanja in kontroleJože Mohorko, Žarko Čučej, 2009, published professional conference contribution Keywords: telekomunikacije, komunikcijska omrežja, informacijski sistemi, vojaški informacijski sistemi, taktična radijska omrežja, taktična omrežja, modeliranje omrežij, modeliranje prometa, simulacije, MIP, C2IEDM, C2IS, OPNET
Published in DKUM: 31.05.2012; Views: 1826; Downloads: 54
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10. Advanced modelling and simulation methods for communication networksJože Mohorko, Matjaž Fras, Saša Klampfer, 2008, original scientific article Abstract: This paper contains a brief overview of suitable simulation tools available for education and research on network technologies and protocols. Among the mentioned tools we present advanced methods for network simulations using the OPNET modeler simulation tool. This is one of the most widespread simulation tools for network simulations, appropriate for both for teaching and also for the researching procedures of new internet devices and protocols. The basic package is intended for simulating communication networks and for protocols and devices development. There are also additional specific modules, such as a module assigned to the simulation of wireless networks, an ACE module for application analyzing, 3DNV module for visualizing networks on virtual terrain and the "System in the loop" module for simulating networks with real communication equipment in the loop, in real-time.
Keywords: network simulation, simulation tools, modelling, communication networks, OPNET
Published in DKUM: 31.05.2012; Views: 2209; Downloads: 60
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