In this paper, we present our lightweight semantic publish/ subscribe system μC-SemPS that is targeted towards battery-powered micro-controllers and wireless sensor nodes in ubiquitous computing environments. The key challenge that we address is to minimize the overall energy consumption for subscription matching and delivery. Our system relies on an efficient representation of semantic subscri...

Simulating large-scale dynamic systems becomes increasingly more important as real-world systems grow in scale. We present a set of components for the OMNeT++ discrete event simulator which enable efficient modeling of large-scale random graphs that capture real-world properties, e.g. scalefree networks and small-world topologies. The complexities of the network are abstracted into a single com...

The main problem concerning laptops and handheld devices is the limited battery power, their batteries lifetime have a significant impact on the performance of ad hoc networks since nodes in ad hoc networks need to relay their packets through other nodes. In this paper, fuzzy controllers take number of hops, packet queue occupancy, and remaining energy along the paths into account while picking...

Multihoming and mobility protocols enable computing devices to stay always best connected (ABC) to the Internet. The focus of our study is on handover latency and rehoming time required by such protocols. We used simulations in OMNeT++ to study the performance of the following protocols that support multihoming, mobility or a combination thereof: Mobile IPv6 (MIPv6), Multiple Care-of Address Re...

The Internet of Things (IoT) is expected to grow into billions of devices in the near future. Evaluating mechanisms such as networking architectures for communications in the IoT require the use of simulators due to the scale of the size of networks. Mobility is one of the key aspects that need to be evaluated when considering the different scenarios of the IoT. Small Worlds in Motion (SWIM) is...

In this paper we present MCoreSim, an open-source simulation framework for massively parallel and many-core computing systems based on OMNeT++. The simulator supports tile-based architectures with distributed memory and meshbased interconnects. Its primary purpose is to allow for investigations on the impact of the heterogeneous in-chip communication latencies, as arising due to the network-on-...

Wireless networks are widely deployed and have many uses, for example in critical embedded systems. The applications of this kind of network meets the common needs of most embedded systems and addressing the particularities of each scenario, such as limitations of computing resources and energy supply. Problems such as denial of service attacks are common place and cause great inconvenience. Th...

This paper presents an overview of the implementation of Application Layer Multicast (ALM) in OverSim, a simulation framework designed specifically for simulating overlay networks. OverSim builds upon the OMNeT++ discrete event simulator. In addition, the paper presents guidelines for further research work based on reliable and Quality of Service (QoS)-aware multicast overlay networks. This res...

In the full version of this paper [3] we propose DESYDE: a decentralized approach for coordinating the radio activity of wireless sensor nodes. Inspired by the win-stay lose-shift strategy from game theory, our approach allows individual nodes to schedule their radio transmission, reception and sleeping periods without any form of explicit coordination. We implement DESYDE in the OMNeT++ sensor...

Mobile Adhoc Networks (MANETs) are very popular solutions where network infrastructure installation is not possible. In MANETs, nodes are mobile, and due to this mobility, topology of the network changes rapidly. This dynamic topology reduces the data availability in MANETs. Cooperative caching provides an attractive solution for this problem. In this paper, a new cooperative caching algorithm,...