Y-Comm: a global architecture for heterogeneous networking.

In the near future mobile devices with several interfaces will become commonplace. Most of the peripheral networks using the Internet will therefore employ wireless technology. To provide support for these devices, this paper proposes a new framework which encompasses the functions of both peripheral and core networks. The framework is called Y-Comm and is defined in a layered manner like the OSI model

An architectural framework for heterogeneous networking.

The growth over the last decade in the use of wireless networking devices has been explosive. Soon many devices will have multiple network interfaces, each with very different characteristics. We believe that a framework that encapsulates the key challenges of heterogeneous networking is required. Like a map clearly helps one to plan a journey, a framework is needed to help us move forward in this unexplored area. The approach taken here is similar to the OSImodel in which tightly defined layers are used to specify functionality, allowing a modular approach to the extension of systems and the interchange of their components, whilst providing a model that is more oriented to heterogeneity and mobility

Machine-assisted Cyber Threat Analysis using Conceptual Knowledge Discovery

Over the last years, computer networks have evolved into highly dynamic and interconnected environments, involving multiple heterogeneous devices and providing a myriad of services on top of them. This complex landscape has made it extremely difficult for security administrators to keep accurate and be effective in protecting their systems against cyber threats. In this paper, we describe our vision and scientific posture on how artificial intelligence techniques and a smart use of security knowledge may assist system administrators in better defending their networks. To that end, we put forward a research roadmap involving three complimentary axes, namely, (I) the use of FCA-based mechanisms for managing configuration vulnerabilities, (II) the exploitation of knowledge representation techniques for automated security reasoning, and (III) the design of a cyber threat intelligence mechanism as a CKDD process. Then, we describe a machine-assisted process for cyber threat analysis which provides a holistic perspective of how these three research axes are integrated together

Slicing in WiFi networks through airtime-based resource allocation

Network slicing is one of the key enabling technologies for 5G networks. It allows infrastructure owners to assign resources to service providers (tenants), which will afterwards use them to satisfy their end-user demands. This paradigm, which changes the way networks have been traditionally managed, was initially proposed in the wired realm (core networks). More recently, the scientific community has paid attention to the integration of network slicing in wireless cellular technologies (LTE). However, there are not many works addressing the challenges that appear when trying to exploit slicing techniques over WiFi networks, in spite of their growing relevance. In this paper we propose a novel method of proportionally distributing resources in WiFi networks, by means of the airtime. We develop an analytical model, which shed light on how such resources could be split. The validity of the proposed model is assessed by means of simulation-based evaluation over the ns-3 framework.This work has been supported in part by the European Commission and the Spanish Government (Fondo Europeo de desarrollo Regional, FEDER) by means of the EU H2020 NECOS (777067) and ADVICE (TEC2015-71329) projects, respectively

Autonomic system for mobility support in 4G networks

The paper is about PROTON, a reactive policy management system developed to set up policies to decide when vertical handover should occur, based on a 3-layer subsystem. This work is significant because it showed that PROTON could not be run on the mobile node. The paper proposed running PROTON in the network that would then specify a finite-state machine (i.e. an autonomic system) to execute on the mobile. The work is significant because it showed that autonomic techniques can be used in 4G systems to support client-based handover. It is also a tremendously useful paper for implementers of real systems

Gestión de políticas y precios en entornos de acceso heterogéneos

La irrupción de nuevos servicios, y el imparable aumento del número de tecnologías de acceso a disposición de los usuarios, hace que los diferentes actores involucrados en el ámbito de las comunicaciones tengan que replantearse sus estrategias tradicionales. Es necesario afrontar el diseño de una arquitectura capaz de asumir los retos que van apareciendo, siendo clave romper con algunas de las soluciones tradicionales, que no son capaces de responder a las nuevas exigencias que aparecen. Uno de los aspectos más importantes es afrontar el diseño desde un punto de vista global, haciendo que las diferentes entidades cooperen entre sí de manera abierta y flexible, lo que no es posible (en muchas ocasiones) con parches a las alternativas que actualmente existen. Este marco es en el que se sitúa el proyecto Comunicaciones Cognitivas, Cooperativas y Gestión Autónoma de Servicios (C3SEM), que se fundamenta en la cooperación e integración del substrato de comunicación subyacente con la arquitectura de gestión de servicios. En este trabajo se plantea una de las líneas de trabajo actuales, en la que se analiza diferentes políticas de gestión de precios, ya que parece razonable que en el medio plazo los operadores se vean obligados a redefinir sus estrategias actuales, principalmente basadas en tarifas planas.Peer Reviewe

Gestión de políticas y precios en entornos de acceso heterogéneos

La irrupción de nuevos servicios, y el imparable aumento del número de tecnologías de acceso a disposición de los usuarios, hace que los diferentes actores involucrados en el ámbito de las comunicaciones tengan que replantearse sus estrategias tradicionales. Es necesario afrontar el diseño de una arquitectura capaz de asumir los retos que van apareciendo, siendo clave romper con algunas de las soluciones tradicionales, que no son capaces de responder a las nuevas exigencias que aparecen. Uno de los aspectos más importantes es afrontar el diseño desde un punto de vista global, haciendo que las diferentes entidades cooperen entre sí de manera abierta y flexible, lo que no es posible (en muchas ocasiones) con parches a las alternativas que actualmente existen. Este marco es en el que se sitúa el proyecto Comunicaciones Cognitivas, Cooperativas y Gestión Autónoma de Servicios (C3SEM), que se fundamenta en la cooperación e integración del substrato de comunicación subyacente con la arquitectura de gestión de servicios. En este trabajo se plantea una de las líneas de trabajo actuales, en la que se analiza diferentes políticas de gestión de precios, ya que parece razonable que en el medio plazo los operadores se vean obligados a redefinir sus estrategias actuales, principalmente basadas en tarifas planas.Peer ReviewedPostprint (published version

Autonomic system for mobility support in 4G networks

The paper is about PROTON, a reactive policy management system developed to set up policies to decide when vertical handover should occur, based on a 3-layer subsystem. This work is significant because it showed that PROTON could not be run on the mobile node. The paper proposed running PROTON in the network that would then specify a finite-state machine (i.e. an autonomic system) to execute on the mobile. The work is significant because it showed that autonomic techniques can be used in 4G systems to support client-based handover. It is also a tremendously useful paper for implementers of real systems

Managing Secure Virtual Infrastructures: From Networks To Clouds - A Report On Lanoms 2011

The 7th Latin American Network Operations and Management Symposium (LANOMS 2011) was held in Quito, Ecuador, on October 10 11, 2011. A panel on 'Trends in Managing Virtual Infrastructures: from Networks to Clouds', moderated by Prof. José Marcos Nogueira, from Federal University of Minas Gerais, Brazil, generated lively discussions on the current state of the technology in cloud computing, what are the main challenges in this field, and what can be expected to be solvable in the near future. Dr. Vladimir Tosic's keynote started by highlighting that currently many organizations are attracted to cloud computing as an information and communications technology sourcing model that can improve flexibility and total cost of systems. Prof. Otto C.M.B. Duarte's keynote was 'On the Design of the Future Internet'. He started highlighting that the very growth of the Internet is due to the TCP/IP protocol stack and its model of a simple core and complexity on the border.204601607Westphall, C., Kormann, L., Notare, M., Riso, B.G., Cruz, F., Report: Network management solutions and trends for the Latin and global markets (2000) J. Netw. Syst. Manag., 8 (2), pp. 299-304Nogueira, J.M., Loureiro, A.A.F., Network management as a strategy for evolution and development: A leport from LANOMS 2001 (2002) J. Netw. Syst. Manag., 10 (2), pp. 261-264Duarte Jr., E.P., Madeira, E., Future trends in network management: A report on LANOMS 2003 (2003) J. Netw. Syst. Manag., 11 (4), pp. 499-503Granville, L.Z., Gaspary, L.P., Schulze, B., De Souza, J.N., Spotlights on network operations and management research in Latin America: A report on LANOMS 2005 (2006) J. Netw. Syst. Manag., 14 (1), pp. 175-179De Souza, J.N., Schulze, B., Sauvé, J.P., Madeira, E., Ziviani, A., Bringing autonomic principles for managing next generation networks and services: A report on LANOMS 2007 (2008) J. Netw. Syst. Manag., 16 (1), pp. 120-128The 6th Latin American Network Operations and Management Symposium (LANOMS'2009), , http://www.lanoms.org/2009, accessed in April 2012

Gestión de políticas y precios en entornos de acceso heterogéneos

La irrupción de nuevos servicios, y el imparable aumento del número de tecnologías de acceso a disposición de los usuarios, hace que los diferentes actores involucrados en el ámbito de las comunicaciones tengan que replantearse sus estrategias tradicionales. Es necesario afrontar el diseño de una arquitectura capaz de asumir los retos que van apareciendo, siendo clave romper con algunas de las soluciones tradicionales, que no son capaces de responder a las nuevas exigencias que aparecen. Uno de los aspectos más importantes es afrontar el diseño desde un punto de vista global, haciendo que las diferentes entidades cooperen entre sí de manera abierta y flexible, lo que no es posible (en muchas ocasiones) con parches a las alternativas que actualmente existen. Este marco es en el que se sitúa el proyecto Comunicaciones Cognitivas, Cooperativas y Gestión Autónoma de Servicios (C3SEM), que se fundamenta en la cooperación e integración del substrato de comunicación subyacente con la arquitectura de gestión de servicios. En este trabajo se plantea una de las líneas de trabajo actuales, en la que se analiza diferentes políticas de gestión de precios, ya que parece razonable que en el medio plazo los operadores se vean obligados a redefinir sus estrategias actuales, principalmente basadas en tarifas planas.Peer Reviewe