The increasing demand for real-time multimedia streaming from mobile users makes important deployment of network selection in wireless networks. Coexistence of various wireless access networks and ability of mobile terminals to switch between them make an optimal selection of serving mobile networks for groups of mobile clients a challenging problem. Since scalability can easily become a bottle...

WSNs are designed to efficiently collect data and monitor environments, among other applications. This article describes the concept and realization of an Active Security System for security management of warehousing of chemical substances using WSNs. We present an approach to modeling and simulating cooperation between intelligent products that are equipped with a platform of sensor networks a...

IEEE 802.15.4 defines the physical and MAC layer specifications for low-rate wireless personal area networks (WPANs). In order to evaluate its performance, we develop a simulation model of IEEE 802.15.4 in OMNeT++, which is a popular simulation platform especially suitable for the simulation of communication networks. The model consists of two modules for PHY and MAC layers respectively and sup...

It is generally considered that the wireless networks of the future will consist of several radio access technologies. In this context, the vertical handover (VHO) decision algorithms will increase in importance and in complexity, and the study of these algorithms becomes a hot research topics. In this work we propose a high-level OMNeT++ framework that permits an efficient evaluation of variou...

In this paper, we propose the improved Statistical Synchronization Method (SSM-T) for parallel discrete event simulation. Criteria are given for the time-driven approach (SSM-T). It is proven, that the level of the output error can be guaranteed. SSM-T is implemented in the OMNeT++ discrete event simulation tool, which is a useful and widespread framework for creating various simulation models ...

¾ IEEE 802.15.4/Zigbee standards → protocol stack for communications of low cost, low rate, and energy efficient wireless embedded devices ¾ 802.15.4 enables star topologies (a coordinator and a set of leaf nodes) ¾ Coordinator emits a periodical 'beacon' to keep leaf nodes synchronized. After every beacon, nodes can transmit for a certain time (superframe duration) with CSMA/CA. The rest of th...

Reliable and efficient communication is one of the key requirements for the deployment of self-driving cars. Consequently, researchers and developers require efficient and precise tools for the parallel development of vehicular mobility and communication. Although current state-of-the-art approaches allow the coupled simulation of those two components, they are making use of multiple specialize...

This paper focuses on transportation models in smart cities. We propose a new dynamic mobility traffic (DMT) scheme which combines public buses and car ride-sharing. The main objective is to improve by maximizing the riders’ satisfaction based real-time data exchange between regional manager, buses, ride-sharing riders. OpenStreetMap OMNET++ were used implement realistic scenario for proposed m...

MIPv6 is the IPv6 based mobility management protocol and it is expected to become the mobility management protocol of choice for the Next Generation Wireless Access Networks. In order to develop the understanding of the protocol’s behavior, its suitability for deploying in a wireless environment and in order to be able to propose and develop appropriate improvements and optimizations, it is imp...

Extensive usage of information and communication technology (ICT) characterizes the next generation power grid. ICT supports diverse smart grid applications from the level of energy management, all the way down to control and protection approaches. The evaluation of a smart grid application requires multidisciplinary tools that capture its versatile nature. In this paper, we present a short tut...