Data centers are critical, energy-hungry infrastructures that run large-scale Internet-based
services. Energy consumption models are pivotal in designing and optimizing energy …

Flexgrid technology is now considered to be a promising solution for future high-speed
network design. In this context, we need a tutorial that covers the key aspects of elastic …

This work presents an estimation of the global electricity usage that can be ascribed to
Communication Technology (CT) between 2010 and 2030. The scope is three scenarios for …

In order to understand the electricity use of Internet services, it is important to have accurate
estimates for the average electricity intensity of transmitting data through the Internet …

The first SCION book, published in 2017, summarized the results of eight years of work by
over a dozen researchers. Now, five years later, we have completely rewritten the book. It …

Service function chains (SFCs) are an ordered set of virtual network functions (VNFs) which
can realize a specific network service. Enabled by virtualization technologies, these VNFs …

In this paper, we discuss energy-efficiency improvements in core networks obtained as a
result of work carried out by the GreenTouch consortium over a five-year period. A number of …

Ever-increasing bandwidth demands associated with mobile backhaul, content-rich services
and the convergence of residential and business access will drive the need for next …

There is a growing research interest in improving the energy efficiency of communication
networks. In order to assess the impact of introducing new energy efficient technologies, an …

The rapid growth in communications and internet has changed our way of life, and our
requirement for communication bandwidth. Optical networks can enable us to meet the …