Increasing robustness of Software-Defined Networks

In this thesis, an overview on performed research is given to investigate possible enhancements and solutions to enable SDN as future network paradigm. Currently, beside robustness, problems exist on scalability and security with the application of SDN to current network infrastructures. On robustness, current research do not provide the...

Network Discovery in a Recursive Internet Network Architecture

Network discovery strategy in a recursive internet network architecture. A recursive internet network architecture consists of independent recursive layers together with inter process communication (IPC) between these layers.

The Influence of Network Topology on the Operational Performance of the Low Voltage Grid

The present Low Voltage (LV) grid, which until recently was mainly composed of passive electrical components (consumers), is being gradually overrun by active electrical components (prosumers), who not only consume but also generate and share power locally. This development is introducing changes in the operational dynamics of the LV grid that...

Control Architecture and Utility Maximization for a Smart Grid based Energy Community

This thesis presents a control architecture and utility maximization mechanisms for a smart grid based energy community. The particular focus is upon a central server based, utility-oriented energy community which is composed of producer-consumer (prosumer) households each having a home gateway, an energy management system, smart meters,...

Estimating popularity by sentiment and polarization classification on social media

Mass processing of social media posts has been brought to scientists' attention during the last decade. The massive growth of online social networks, like Twitter and Facebook, have created a need for determining peoples' opinions and moods through these means. This thesis constitutes a research on measuring users' sentiment upon a particular...

Implementing Link-state Update Policies for Quality of Service Routing

This thesis describes the implementation of available bandwidth link-state update policies for Quality of Service routing. Periodic, threshold-based and class-based policies are described and implemented in a QoS router testbed, using Quagga and its OSPF-API for low-level communications. The implementation is thoroughly tested using unit tests...

A simulation and capacity management tool for KPN's Ethernet network

This thesis describes the development of a simulation and capacity management tool for generic networks. As a case study KPN's Ethernet network is analysed. The tool can be used to calculate various network metrics that are used in complex network studies. It can also be used to display a geographically correct view of the network, as well as a...

Robustness Analysis and Capacity Management of the KPN (PS) Mobile Core Network

This thesis has two main topics. On the one hand it discusses how the robustness of a network can be increased as efficient as possible, where connectivity is treated as a robustness measure. On the other hand It treats capacity management of a network when it is still in its design phase. In particular, it shows how bandwidth management can be...

Impairment-aware Survivable Routing and Regenerator Placement in WDM Networks

Optical networks employing the wavelength division multiplexing (WDM) technology are promising solutions to the ever increasing demand for bandwidth. The use of WDM allows aggregation of many channels onto a single fibre without the need of high speed optoelectronic devices for end users. In WDM networks, as the optical signals traverse multiple...