Modern applications for distributed publish/subscribe systems often require stream aggregation capabilities along with rich data filtering. When compared to other distributed systems, aggregation in pub/sub differentiates itself as a complex problem which involves dynamic dissemination paths that are difficult to predict and optimize for a priori, temporal fluctuations in publication rates, and the mixed presence…
Tags: OMNeT++ simulator
State Observation and Communication for Cloud Vehicle Control
In this study, a new method was developed to automate vehicles. Numerous vehicle control systems have been realized for electronic steering, driving, and braking. Higher-standard vehicle control systems have increased costs. This study focused on cloud vehicle control using roadside sensors and computers. If a high-standard vehicle control system can be realized by using vehicles…
Ergodic Capacity of SIM-Based DF Relayed Optical Wireless Communication Systems
In this letter, we consider a dual-hop, subcarrier intensity modulation-based relayed optical wirelesscommunication system under the combined influence of atmospheric turbulence and pointing error impairments. The turbulence-induced fading is modeled by independent but not necessarily identically distributed Gamma-Gamma fading statistics with misalignment fading. The relaying protocol followed by the relay is decode and forward. We first,…
Synchrony in neuronal communication: An energy efficient scheme
We are interested in understanding the neural correlates of attentional processes using first principles. Here we apply a recently developed first principles approach that uses transmitted information in bits per joule to quantify the energy efficiency of information transmission for an inter-spike-interval (ISI) code that can be modulated by means of the synchrony in the…
Software-defined wireless mesh networks: architecture and traffic orchestration
SDN has been envisioned as the next generation network paradigm by decoupling control plane and data plane, such that network management and optimization can be conducted in a centralized manner using global network information. In this article, we study how to apply SDN concept to a wireless meshnetwork that has been widely adopted by various applications. We first propose a novel architecture…
BaProbSDN: A probabilistic-based QoS routing mechanism for Software Defined Networks
Over the past decade there has been an exponential increase in the Internet traffic especially with the proliferation of cloud computing and other distributed data services. This explosion of data traffic with its dynamically changing traffic patterns and flows might result in degradation of the network performance. In this context, there is a need for an intelligent…
Towards trusted software-defined networks using a hardware-based Integrity Measurement Architecture
The rise of software-defined networks in recent years has allowed unprecedented agility in networkconfiguration and orchestration. As physical links and configurations become virtualised, this has created many opportunities for dynamic and transparent deployment of services. This however, opens up a potential attack surface for new forms of attack. Thus, with the combination of SDN elements abstracting their administration to network administrators…
Scalable application-aware resource management in software defined networking
SDN architecture based on separation of control and data plane in network devices enables realization of network programmability and application-aware networking. In this paper, we point out that the information of how applications are using network resources is ignored in modern SDN solution and should be recorded in application-aware SDN. We stress the importance of mapping applications tonetwork resources and maintaining such mapping…
Towards the Tactile Internet: Decreasing Communication Latency with Network Coding and Software Defined Networking
5G communication networks enable the steering and control of Internet of Things and, therefore, require extremely low latency communications referred to as the tactile Internet. In this paper, we show that the massive use of network coding throughout the network significantly improves latency and reduces the frequency of packet re-transmission. Thus, an architecture built around network coding may be a feasible road towards…
GreCo: An Energy Aware Controller Association Algorithm for Software Defined Networks
Software Defined Networks (SDNs) separate the control and data planes of devices to expedite the deployment, configuration and evolution of networks. In this respect, controllers play a key role. In particular, they control the behavior of switches and must do so quickly. This, however, may be at odds with the goal of reducing the energy consumption of a SDN…