The Internet's Transport Layer has been defined by TCP and UDP for the last 30 years. The minimal functionality of UDP enables application developers to develop their own proprietary protocols - there are plenty of examples.

This paper presents a simple framework, called WalkAbout, to infer a coarse view of connectivity in very large graphs; that is, identify well-connected “regions" with different edge densities and determine the corresponding inter- and intra- region connectivity.

El viernes 26 de septiembre de 2014, entre las 18:00 y las 21:00 horas, algunos investigadores de los Institutos de investigación IMDEA mostrarán al público que en un automóvil se pueden encontrar ejemplos de los avances experimentados por ciencias y tecnologías tan diversas y aparentemente poco relacionadas entre sí, como el software, la ciencia de materiales o la alimentación.

We present a first fully analytical approach to performance evaluation of D2D communication systems, which does not assume transmitters to have always a packet to transmit. In particular, we adopt a Coupled Processors model to describe a cellular scenario with D2D users sharing radio resources with cellular users, i.e., adopting in-band underlay D2D schemes. We derive sufficient conditions for stability of such system, and we characterize the effects of D2D transmissions on cellular user performances.

With the increasing availability of configurable network equipments, the research has moved from proposals to improve quality of service in the wireless standards, to complete potential chaos when it becomes accessible to every user. In this talk we go through this evolution and discuss its impact on the network and on the user.

Sólo hace un año los españoles comenzaron a disfrutar de las redes móviles 4G, que aumentan diez veces la velocidad de transmisión de datos móviles, en comparación con la tercera generación. El desarrollo de la red 5G ya está en marcha, con la intención de proporcionar una red con una capacidad mil veces mayor que la de la anterior generación.

Virtualization is a powerful paradigm in computer science, as it allows to decouple software and services from the constraints of the underlying physical infrastructure. Virtualization is also one of the main innovation motors in today's Internet

Visible light is ubiquitous in the cyber-space nowadays. In this talk, I will introduce our recent work about how to harness visible light for mobile computing applications in both temporal and spatial design domains. Our work leverages the fact that the fluorescent light intensity changes with a stable period, which can serve as both a global time reference and an indoor environment indicator.

Publish/subscribe (pub/sub) is a popular communication paradigm in the design of large-scale distributed systems. We are witnessing an increasingly widespread use of the pub/sub for wide array of applications both in industry and academia and yet there is a lack of detailed study of a large-scale real-world pub/sub system.

One of the most important achievements of Software-Defined Networking is a possibility to redefine existing invariants in network management, This talk covers three important aspects of data path provision: (1) what should be flexible at the network element level to express various economic models and how different characteristics impact desired objective functions?; (2) how to represent this expressiveness efficiently on data plane; and 3) new abstractions that allow to integrate services from heterogeneous controllers without standardization of Northbound API.