Dalimir Orfanus

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In order to evaluate the behavior and performance of protocols for wireless networks, simulations are a good compromise between cost and complexity, on the one hand, and accuracy of the results, on the other hand. Since there are many simulators for wireless networks, it is often difficult to decide which simulator to choose. To help shed light on this(More)
Industrial Ethernet is gradually becoming pervasive in the automation field. EtherCAT is one such technology, combining high real-time performance with a rich functionality set. Besides that, EtherCAT offers short cycle times, accurate time synchronization, redundancy and high data throughput. Most EtherCAT applications are in the 500-1000μs domain.(More)
Designing protocols for wireless networks is a challenging task. Combined with the fact that such networks are often deployed for critical missions like forest fire detection in the WSN scenario or have to function properly and efficiently for an extended period of time, it is desirable to thoroughly test, analyze and evaluate newly developed communication(More)
Nowadays, a range of applications and systems are emerging that consist of hundreds or thousands of computing devices, which are available at low cost but severely limited in their resources. A proper orchestration of these elements can yield a powerful system, which performs complex tasks, while staying simple and making efficient use of its resources.(More)
This paper presents a simulation tool integration framework which aims to integrate tools from various research fields in order to provide a seamless design flow for distributed systems with Emergent Self-Organization (ESO). ESO is a decentralized dynamic process with many favorable properties which makes it attractive for large scale distributed systems.(More)
The growing design complexity of today’s embedded real-time systems requires new techniques aiming the raising of the abstraction level since earlier stages of design in order to deal with such complexity in a suitable way. This paper reports a case study, which provides an assessment of two well-know high-level paradigms, namely Aspect(AO) and(More)
Given the resource constraints and the relatively high cost of communication in wireless sensor networks, data collection presents one of the central challenges in this network class. In this paper, we propose an efficient self-organizing data collection protocol, which addresses this challenge. Exploiting the knowledge of the underlying topology, the(More)
Data acquisition is an important task to provide context awareness of a military operation scenario in order to support informed decisions. Wireless sensor networks (WSN) play a remarkable service in this context by collecting data on remote areas to support decision support systems in control centers. However, due to the nature of the locations where they(More)
In this work concepts of division of labor in social insects and emergent self-organization are used to design a very efficient heuristic for clustering wireless sensor networks. Differently from previous approaches, we aim at creating clusters with a minimum amount of resources and good intra-cluster connectivity. Our heuristic has two steps. First, we(More)