5G Deployment: Initial Startup and Long-term Migration Plan

Since the first introduction of 4G in the early 2010s, mobile data traffic has increased significantly, mainly because 4G networks can support more devices, services and applications, as well as greater cellular network coverage. With the advent of the 5G era, the mobile communication system will be further developed. Today, most countries and...

Modifying a path into the shortest path

The inverse shortest path problem (ISPP) is a problem based on graph theory, that is to design link weights in a graph to satisfy that given paths are the shortest between the corresponding node pairs. It can be used in networks of complex systems to solve practical problems such as re-routing in transportation systems and reallocating resources...

Spreading Processes over Adaptive Networks

The spreading process of diseases has been an important research topic for many years. It has profound effects on the development of human social behaviors. The underlying social network structure may change when individuals change their connection with other individuals in response to the epidemic. The classic susceptible-infected-susceptible ...

Inverse shortest path algorithm for weighted graphs: Flow-based resource management for path networks

With the proliferating networks, resource allocation based on Quality of Service (QoS) constraints mapping has been one of the difficulties faced by Internet Service Providers (ISP). The advent of new technologies such as virtualization and cloud computing have enabled the users to access content from anywhere around the world. This results in a...

Developing a Markov-Modulated Process Model for Mobility Processes

A major factor in the spreading of viruses is human-to-human transmission, and human mobility is clearly linked to the spreading process of epidemics. If we hope to understand the evolution of an epidemic, then we must also understand the underlying mobility process and the interaction between the two.<br/><br/>We propose the Markov modulated...

Modeling the Spread of Epidemics: Visualizing the Spread of COVID-19 and Applying a Markov-Modulated Process Model to Mobility Processes

This thesis consists of two parts which are connected by the central theme of epidemics. In the first part, a website is designed for forecasting the number of cases of COVID-19 in the Netherlands. The forecasting is performed using the Network-Inference-Based Prediction Algorithm (NIPA). The first part of the thesis documents the design process...

SIS Epidemics on Network with Non-Markovian Curing Process

Susceptible-Infected-Susceptible (SIS) model is commonly used to describe the spreading of virus on networks. However, a real-life epidemic process is not necessarily Markovian. The spreading of diseases, behaviors and information in real systems are sometimes dependent on the characteristics and current status of individuals. Thus it is far...

Modelling epidemic spreading phenomena processes on networks

Spreading processes are ubiquitous in nature and societies, e.g. spreading of diseases and computer virus, propagation of messages, and activation of neurons. Computer viruses cause an enormous economic loss. Moreover, many illnesses/diseases still causing a serious threat to public health. For example, the outbreaks of circulating influenza...

Robustness Analysis of the Dutch Synchromodal Freight Transport Network: Simulating Disruptions on a Macroscopic Graph Model

Freight transport is an essential component of the economy, as among other things it ensures the availability of finished goods to consumers. Synchromodal transport is a new transport method that aims to use real-time and flexible switching among different modes of transport according to the latest logistics information, to utilise the different...

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...

Robust Offshore Networks for Oil and Gas Facilities

Offshore Communication Networks utilize multiple of communication technologies to eradicate any possibilities of failures, when the network is operational. Offshore Oil and Gas platforms and Wind parks (manned / unmanned) have strict and tight requirements for robust communication. Robustness of communication networks can be evaluated by the...

Evolving Properties of Growing Networks

Complex networks describe a wide range of systems and structures in the world. Any real network can be modeled as graph, expressed by an adjacency matrix or list. In many complex networks, when a graph of a certain type grows in size, its properties are expected to change. Each complex network presents specific topological features which...