Faculty of Computer Science and Engineering
Permanent URI for this communityhttps://repository.ukim.mk/handle/20.500.12188/5
The Faculty of Computer Science and Engineering (FCSE) within UKIM is the largest and most prestigious faculty in the field of computer science and technologies in Macedonia, and among the largest
faculties in that field in the region.
The FCSE teaching staff consists of 50 professors and 30 associates. These include many “best in field” personnel, such as the most referenced scientists in Macedonia and the most influential professors in the ICT industry in the Republic of Macedonia.
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Item type:Publication, Performances of clustered ad hoc networks on 3D terrains(ICST (Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering), 2009-03-02); ; Vuckovik, MarijaPropagation prediction algorithms which use terrain information are typically used for the design of modern wireless systems. Therefore, it is essential that when analyzing the performances of ad hoc networks we observe the network in a natural 3D terrain and we use an appropriate propagation model. In this paper we explain our extension of the NS-2 simulator using Digital Elevation Model data and terrain aware propagation model. Because of the natural emergence of clustering in the network of users, we also study the relationship between the clustering in the ad hoc networks and different terrain profiles. The simulations show that, when the network clusters are accompanied with related terrain contours, the observed network performances demonstrate measurable enhancement. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Analysis of small world phenomena and group mobility in ad hoc networks(Springer Netherlands, 2007); ; Grnarov, AksentiThe main application of wireless mobile ad hoc networks is to offer services for situations wherein groups of people come together and share information. The groups of people that use the ad hoc network form some kind of social network. In this paper an analysis of the performances of mobile ad hoc networks is performed when taking into consideration its social characteristics through the small world phenomena of the application layer and usage of group-based mobility. The simulations show that the social interconnection between the network users has an extreme influence on the network performances. The results bring forth a different view on the real life deployment of ad hoc networks when compared to the poor performances of the purely randomized scenarios. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Ad hoc networks connection availability modeling(ACM, 2004-10-04); ; - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Ad Hoc Networks Routing Protocols Efficiency With Respect To Connection Availability(2004-06-16); ; - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Ad Hoc Network Simulators Features(Institute of Informatics, Faculty of Natural Sciences and Mathematics, Ss. Cyril and Methodius University in Skopje, Macedonia, 2003); ; Grnarov, AksentiThe deployment of wireless applications or protocols in the context of MANETs, often requires stepping through a simulation phase. There are several popular simulators, such as OPNET Modeller, GloMoSim or NS-2. Since NS-2 is more frequently used in worldwide network societies we present our experiences gained with the use of NS-2 for simulations of wireless mobile ad hoc networks. Facing the problem of poor documentation for ad hoc networks, our research resulted in reach documentation for NS-2 trace files and behaviour of ad hoc networks. We observed the flexibility of NS-2 simulator, by the means of adding new application layers, change of existing routing protocols, and incorporating various extensions created outside the NS-2 development team. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Computation and measurement of low frequency magnetic field near thin-wire structures(2007); - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Spatial Parameters And Connection Availability In Ad Hoc Networks(Institute of Informatics, Faculty of Natural Sciences and Mathematics, Ss. Cyril and Methodius University in Skopje, Macedonia, 2003); ; - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Ad Hoc Network Performances for Hybrid Social Networks(2008-11-25); Ad hoc networks provide means for information sharing for a group of users. Thus, care must be taken that a proper model of the end-to-end communication is used. In order to model a real-life situation, we use a unifying hybrid social network model that captures the scale-free property and small-world effect that appear when viewing the graph that corresponds to the user interaction. Several hybrid networks are investigated and certain interesting behaviors are shown - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Node density influence on link expiration time in ad hoc networks(IEEE, 2005-11-21); ; Grnarov, AksentiBecause reactive routing protocols act differently on the presence of nodes in the transmission range proximity, the link expiration time depends on the node density in the ad hoc network. We present a model for calculation of the link expiration times that includes the node density influence. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Toposim: Wireless ad hoc network topology simulator(Institute of Informatics, Faculty of Natural Sciences and Mathematics, Ss. Cyril and Methodius University in Skopje, Macedonia, 2003); ; Grnarov, AksentiAn important task of an ad hoc network consisting of geographically dispersed nodes is to determine the characteristics of the topology which include connectivity, energy-effectiveness, throughput, and robustness to mobility. However, the widely used network simulators don’t support topology simulations that result in an evaluation of the quality of the network topology. Thus, in this paper, we introduce a newly developed wireless ad hoc network topology simulator – TopoSim, that can be used for the purposes of simulating a topology of an ad hoc network, including its dynamical changes caused by the node’s mobility, for the purposes of determining the main topology characteristics of the simulated network.
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