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  • Self-managed Resources in Network Virtualisation Environments

     Mijumbi, Rashid
    Department of Signal Theory and Communications, Universitat Politècnica de Catalunya
    Theses

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    La virtualització de xarxes es una tècnica prometedora per afrontar la resistència d¿'Internet als canvis arquitectònics, que permet un nou model de negoci en el que la gestió de la infraestructura de xarxa es desacobla de la provisió del servei. Això permet als proveïdors de infraestructura (InPs), propietaris de la xarxa física substrat (SN), llogar segments d¿'aquesta als proveïdors dels serveis, que crearan xarxes virtuals (VNs) que a l¿'hora poden re-llogar-se o utilitzar-se per donar servei a usuaris finals.No obstant això, les diferents VNs s¿han d¿'inicialitzar assignant els seus nodes i enllaços als del substrat. Un dels reptes d¿'aquest procés es el requisit de fer un ús eficient dels recursos de la SN. Donat que el benefici d¿'un InP depèn del nombre de xarxes virtuals que puguin allotjar-se simultàniament en la SN, l¿'èxit de la virtualització de xarxes depèn en part de quan eficient es l¿'ús dels recursos de la xarxa física per part de les VNs. Aquesta Tesi contribueix a la millora de l¿'eficiència en la compartició de recursos en la virtualització de xarxes dividint el problema en tres sots problemes: (1) assignació de nodes i enllaços virtuals a nodes i enllaços del substrat (VNE), (2) gestió dinàmica dels recursos assignats a les VNs al llarg de la seva vida útil (DRA) i (3) aprovisionament de recursos de backup per assegurar la supervivència de les VNs.La naturalesa del problema VNE el fa ¿"NP-Hard¿. En conseqüència, per simplificar la solució, moltes de les propostes son heurístiques que es basen en hipòtesis (per exemple, SN amb recursos il¿limitats) de difícil compliment en escenaris reals. Aquesta Tesi proposa una millora al problema VNE mitjançant un algorisme ¿"one-shot VNE¿ basat en generació de columnes (CG). La solució CG comença resolent una versió restringida del problema, per tot seguit refinar-la i obtenir la solució final. L'¿objectiu del ¿"one-shot VNE¿ es aconseguir millorar l¿'ús dels recursos, mentre que CG redueix significativament la complexitat temporal del procés.D¿'altre banda, les solucions actuals son estàtiques, ja que els recursos assignats en la fase VNE no es modifiquen durant tot el temps de vida útil de la VN. Les poques propostes que permeten reajustar l¿'assignació inicial, es basen en una assignació fixe de recursos a les VNs. No obstant això, degut a que la càrrega de la xarxa varia a conseqüència de la demanda canviant dels usuaris, assignar una quantitat fixe de recursos basada en situacions de càrrega màxima esdevé en ineficiència per infrautilització en períodes de baixa demanda, mentre que en tals períodes de demanda baixa, el tenir recursos reservats, pot originar rebutjos de noves VNs. La segona contribució d¿'aquesta Tesi es un conjunt de propostes que asseguren l¿'ús eficient dels recursos de la SN, garantint a la vegada els requeriments de qualitat de servei de totes les VNs. Amb aquesta finalitat es proposen algorismes d¿'autogestió en els que la SN utilitza tècniques d¿'aprenentatge de màquines per a materialitzar decisions autònomes en l¿'assignació dels recursos. Finalment, malgrat que diversos estudis han tractat ja el problema VNE en entorn multi-domini, les propostes actuals de supervivència de xarxes virtuals s¿'han limitat a contexts d¿'aprovisionament per part d¿'un sol InP. En canvi, a la pràctica, la virtualització de xarxes comportarà un entorn d¿'aprovisionament multi-domini, i com que l¿'extensió de solucions de supervivència d¿'un sol domini al multi-domini no es trivial, aquesta Tesi proposa una solució distribuïda i dinàmica per a la supervivència de VNs. Això s¿'aconsegueix amb un sistema multi-agent que utilitza un protocol de negociació multi-atribut i un model dinàmic de preus per formar coalicions d¿'InPs que proporcionaran backups als recursos de les SNs. L¿'objectiu últim es assegurar que els operadors de xarxes virtuals maximitzin beneficis minimitzant les penalitzacions per violació de la QoS.

  • Neural network-based autonomous allocation of resources in virtual networks

     Mijumbi, Rashid; Gorricho Moreno, Juan Luis; Serrat Fernandez, Juan; Claeys, Maxim; Famaey, Jeroen; De Turck, Filip
    EUROPEAN CONFERENCE ON NETWORKS AND COMMUNICATIONS
    p. 1-6
    DOI: 10.1109/EuCNC.2014.6882668
    Presentation's date: 2014-06-24
    Presentation of work at congresses

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    Network virtualisation has received attention as a way to allow for sharing of physical network resources. Sharing resources involves mapping of virtual nodes and links onto physical nodes and links respectively, and thereafter managing the allocated resources to ensure efficient resource utilisation. In this paper, we apply artificial neural networks for a dynamic, decentralised and autonomous allocation of physical network resources to the virtual networks. The objective is to achieve better efficiency in the utilisation of substrate network resources while ensuring that the quality of service requirements of the virtual networks are not violated. The proposed approach is evaluated by comparison with two static resource allocation schemes and a reinforcement learning-based approach.

  • Software Enabled Future Internet ¿ challenges in orchestrating the future Internet

     Galis, Alex; Rubio-Loyola, Javier; Clayman, Stuart; Mamatas, Lefteris; Kuklinski, Slawomir; Serrat Fernandez, Juan; Zahariadis, Theodore
    International Conference on Mobile Networks and Management
    p. 228-244
    DOI: 10.1007/978-3-319-04277-0_18
    Presentation's date: 2013-09-24
    Presentation of work at congresses

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    This position paper presents SoftINTERNET an initiative for a service-aware and management-aware network control infrastructure for heterogeneous networks (i.e., wired and wireless) that uses software driven features for the elaboration, development, and validation of networking concepts. The proposed infrastructure aims to optimally integrate the connectivity and management layers. It operates across multiple network environments and on top of private and public network clouds utilising fixed and mobile virtual resources, OpenFlow enabled network devices like switches and routers, and networks of Smart Objects. In this position paper, we discuss the motivation, architecture and research challenges for such a promising concept.

  • Multilayered reinforcement learning approach for radio resource management

     Collados Zamora, Kevin; Gorricho Moreno, Juan Luis; Serrat Fernandez, Juan; Hu, Zheng
    International Conference on Computer Engineering and Network
    p. 1191-1199
    DOI: 10.1007/978-3-319-01766-2-135
    Presentation's date: 2013-07
    Presentation of work at congresses

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    In this paper we face the challenge of designing self-tuning systems governing the working parameters of base stations on a mobile network system to optimize the quality of service and the economic benefit of the operator. In order to accomplish this double objective, we propose the combined use of fuzzy logic and reinforcement learning to implement a self-tuning system using a novel approach based on a two-agent system. Different combinations of reinforcement learning techniques, on both agents, have been tested to deduce the optimal approach. The best results have been obtained applying the Q-learning technique on both agents, clearly outperforming the alternative of using non-learning algorithms.

  • Conectividad como servicio: acceso para la internet de futuro-1

     Postigo Boix, Marcos; Gorricho Moreno, Juan Luis; Valle Alarcon, Rafael; Melus Moreno, Jose Luis; Serrat Fernandez, Juan
    Competitive project

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  • Management of the Future Internet

     Melus Moreno, Jose Luis; Gorricho Moreno, Juan Luis; Serrat Fernandez, Juan; Postigo Boix, Marcos; Valle Alarcon, Rafael
    Competitive project

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    Multi-agent based resource allocation in next generation virtual networks  Open access

     Mijumbi, Rashid; Serrat Fernandez, Juan; Gorricho Moreno, Juan Luis
    Barcelona Forum on Ph.D. Research in Information and Communications Technologies
    Presentation's date: 2012-10-16
    Presentation of work at congresses

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  • Service Management in Federated e-Infrastructures

     Melus Moreno, Jose Luis; Postigo Boix, Marcos; Gorricho Moreno, Juan Luis; Valle Alarcon, Rafael; Serrat Fernandez, Juan
    Competitive project

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    On the equilibrium of pricing assignment for heterogeneous wireless access networks  Open access

     López, Carmen; Choque, Johnny; Agüero, Ramon; Serrat Fernandez, Juan; Muñoz, Luis
    International Conference on Mobile Networks and Management
    p. 1-15
    Presentation's date: 2012-09-24
    Presentation of work at congresses

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    Next generation networks and service providers are rapidly evolving in order to satisfy the demands of an increasing number of users. Nowadays, one of the most relevant research lines in the Heterogeneous Wireless Access Networks realm is the use of procedures and mechanisms so as to provide intelligence to the network, with the main goal of optimizing its performance. Furthermore, mobile communication users are becoming more demanding, and thus it becomes essential for the providers to be able to offer a competitive value for money. This paper pursues the objective of obtaining, from an analytical perspective, the optimum price assignment strategy according to the characteristics of a particular scenario, analyzing the improvement attained with such optimum pricing policy as compared to a more traditional one. Game theory techniques, which are gathering the interest within the communications scientific community, are used for the analysis.

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    A price based load balancing scheme for multi-operator wireless access networks  Open access

     Choque, Johnny; Agüero, Ramon; Serrat Fernandez, Juan; Muñoz, Luis
    International Conference on Mobile Networks and Management
    p. 1-13
    Presentation's date: 2012-09-24
    Presentation of work at congresses

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    We study a load balancing strategy, based on the price offered by the base stations to the end-users who are willing to establish a connection. The proposed scheme is compared with a pure load balancing procedure, in a scenario comprising two different operators.We study the impact of modifying the price offered by the base stations, in terms of the achieved load balancing, as well as considering the revenue obtained by the operators. Furthermore, we also enhance the two former access selection schemes, by incorporating the willingness of reducing the number of handovers, so as to analyze the impact over this particular parameter, and over all the previous results. The whole work is conducted over a proprietary event-based simulation tool, which offers the required degree of flexibility and low computational overhead.

  • Autonomic resource management in virtual network

     Mijumbi, Rashid; Gorricho Moreno, Juan Luis; Serrat Fernandez, Juan
    Scalable and Adaptive Internet Solutions Summer School
    Presentation's date: 2012-06-28
    Presentation of work at congresses

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    Virtualization enables the building of multiple virtual networks over a shared substrate. One of the challenges to virtualisation is efficient resource allocation. This problem has been found to be NP hard. Therefore, most approaches to it have not only proposed static solutions, but have also made many assumptions to simplify it. In this paper, we propose a distributed, autonomic and artificial intelligence based solution to resource allocation. Our aim is to obtain self-configuring, self-optimizing, self-healing and context aware virtual networks

  • Camps Invisibles. Geografies de les ones ràdio

     Santacana Juncosa, Amadeo; Viotto, Umberto; Serrat Fernandez, Juan
    Collaboration in exhibitions

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  • Policy-assisted planning and deployment of virtual networks

     Davy, Steven; Serrat Fernandez, Juan; Astorga Rivera, Jose Antonio; Jennings, Brendan; Rubio-Loyola, J.
    International Conference on Network and Service Management
    p. 1-8
    Presentation's date: 2011-10-24
    Presentation of work at congresses

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    We present an approach for deploying and subsequently managing a virtual network overlay, which is tailored to an end-user’s request. Our approach combines a binary integer optimisation process to decide on the number and placement of virtual routers, and an autonomic network management system that subsequently manages the configuration of the running virtual network. High-level optimisation policies are used to guide the optimisation process to identify a virtual network that favours lower hosting costs or higher network quality (we use mean delays as a quality metric). Low-level deployment policies are generated and used to govern the deployment and management of the virtual networks. Our results indicate that the binary integer optimisation process produces a virtual network that has lower cost as compared to creating a network based on combined shortest paths.

  • Gestión de políticas y precios en entornos de acceso heterogéneos

     Baliosian, Javier; Rubio-Loyola, J.; Agüero, Ramon; Serrat Fernandez, Juan
    Jornadas de Ingeniería Telemática1
    p. 1-7
    Presentation's date: 2011-09
    Presentation of work at congresses

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    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.

  • On importance of service level management in grids

     Szepieniec, Tomasz; Kocot, Joanna; Schaaf, Thomas; Appleton, Owen; Heikkurinen, Matti; Belloum, Adam S.Z.; Serrat Fernandez, Juan; Metzker, Martin
    Management and Delivering Grid Services
    p. 64-75
    DOI: 10.1007/978-3-642-29740-3-9
    Presentation's date: 2011-08-31
    Presentation of work at congresses

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    The recent years saw an evolution of Grid technologies from early ideas to production deployments. At the same time, the expectations for Grids shifted from idealistic hopes - buoyed by the successes of the initial testbeds - to disillusionment with available implementations when applied to large-scale general purpose computing. In this paper, we argue that a mature e-Infrastructure aiming to bridge the gaps between visions and realities cannot be delivered without introducing Service Level Management (SLM). To support this thesis, we present an analysis of the Grid foundations and definitions that shows that SLM-related ideas were incorporated in them from the beginning. Next, we describe how implementing SLM in Grids could improve the usability and user-experience of the infrastructure - both for its customers and service providers. We also present a selection of real-life Grid application scenarios that are important for the research communities supported by the Grid, but cannot be efficiently supported without the SLM process in place. In addition, the paper contains introduction to SLM, a discussion on what introducing SLM to Grids might mean in practice, and what were the current efforts already applied in this field. © 2012 Springer-Verlag Berlin Heidelberg.

  • Policy-based pricing for heterogeneous wireless access networks

     Baliosian, Javier; Serrat Fernandez, Juan; Richart, Matias; Saavedra, Juan; Borba, Mariela; Melus Moreno, Jose Luis
    International Conference on Autonomous Infrastructure, Management and Security
    p. 73-85
    DOI: 10.1007/978-3-642-21484-4_11
    Presentation's date: 2011-06
    Presentation of work at congresses

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    Our cities are already covered by a myriad of diverse wireless access networks. The most ubiquitous access networks are the well organized homogeneous and centralized operator-based cellular networks that sustain their business model on a captive client basis. However, a new billing paradigm is rising, where a client can choose to connect to the provider that best comply with his/her current requirements and context. Inside this paradigm, this paper presents a distributed, rule-based pricing strategy aimed to improve the quality of service and to increase the global income of a service provider. The performance and reliability of the rule-based decisions is supported by a Finite State Transducersbased inference machine specially designed to manage networking systems. We show, with simulations, that, using our strategy, the operators can make the new billing paradigm profitable while the clients benefit from the economic advantages of competition and of the quality given by a pricing–based network balance mechanism.

  • End-to-end Virtual Resource Management across Heterogeneous Networks and Services

     Gorricho Moreno, Juan Luis; Postigo Boix, Marcos; Melus Moreno, Jose Luis; Valle Alarcon, Rafael; Serrat Fernandez, Juan
    Competitive project

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  • Towards In-Network Clouds in Future Internet

     Galais, Alex; Clayman, S.; LEFEVRE, JOSETTE; Fisher, Andreas; de Meer, Hermann; Rubio Loyola, Javier; Serrat Fernandez, Juan; Davy, Steven
    DOI: 10.1007/978-3-642-20898-0_22
    Date of publication: 2011-05-04
    Book chapter

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    One of the key aspect fundamentally missing from the current Internet infrastructure is an advanced service networking platform and facilities, which take advantage of flexible sharing of available connectivity, computation, and storage resources. This paper aims to explore the architectural co-existence of new and legacy services and networks, via virtualisation of connectivity and computation resources and self-management capabilities, by fully integrating networking with cloud computing in order to create In-Network Clouds. It also presents the designs and experiments with a number of In-Network Clouds platforms, which have the aim to create a flexible environment for autonomic deployment and management of virtual networks and services as experimented with and validated on large-scale testbeds.

  • C/033194/10 Cooperación Institucional entre las universidades AAU y UPC y académica en el ámbito de las TIC

     Torres Urgell, Luis; Vidal Lopez, Eva Maria; Vidal Manzano, Jose; Serrat Fernandez, Juan; Aguilar Igartua, Mónica; Fernandez Muñoz, Marcel
    Competitive project

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    Platforms and software systems for an autonomic internet  Open access

     Rubio-Loyola, J.; Astorga Rivera, Jose Antonio; Serrat Fernandez, Juan; Chai, W.K.; Galis, Alex; Mamatas, L.; Clayman, S.; Cheniour, A.; Lefevre, L.; Mornard, O.; Fischer, A.; Paler, A.; de Meer, H.
    IEEE Global Communications Conference
    p. 1-6
    DOI: 10.1109/GLOCOM.2010.5683380
    Presentation's date: 2010-12-08
    Presentation of work at congresses

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    The current Internet does not enable easy introduction and deployment of new network technologies and services. This paper aims to progress the Future Internet (FI) by introduction of a service composition and execution environment that re-use existing components of access and core networks. This paper presents essential service-centric platforms and software systems that have been developed with the aim to create a flexible environment for an Autonomic Internet.

  • Service management in future networks: the C3SEM vision

     Serrat Fernandez, Juan
    International ICST Conference on Mobile Networks and Management
    Presentation's date: 2010-09-23
    Presentation of work at congresses

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    Business-driven management of differentiated services  Open access

     Rubio Loyola, Javier; Serrat Fernandez, Juan; Charalambides, Marinos; Aib, Issam; Pavlou, George; Boutaba, Raouf
    IEEE/ IFIP Network Operations and management Symposium
    p. 240-247
    DOI: 10.1109/NOMS.2010.5488468
    Presentation's date: 2010-04-23
    Presentation of work at congresses

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    Several intra- and inter-domain quality of service (QoS) provisioning mechanisms for IP networks have been researched and developed using Differentiated Services (DiffServ) technology. However, the incremental efforts needed to manage DiffServ networks from a business-oriented viewpoint have received relatively little attention. This paper addresses this gap and presents a framework for achieving business-driven QoS provisioning in DiffServ over MPLS networks. We provide a rich model of SLA and business indicators as well as reasonable mapping functions that define, with key degrees of importance, the impact of business indicators over service management policies. Business and service indicators are used to control static and dynamic admission of services. The paper advances the state of the art by considering the influence of business-level objectives on the policy refinement process. We evaluate and discuss the effectiveness of our approach through a simulation environment that we developed over OPNET.

  • Manageability of future internet virtual networks from a practical viewpoint

     Rubio Loyola, Javier; Astorga Rivera, Jose Antonio; Serrat Fernandez, Juan; Lefevre, L.; Cheniour, A.; Muldowney, D.; Davy, Steven; Galis, Alex; Mamatas, L.; Clayman, S.; Macedo, D.; Movahedif, Z.; Fischer, A.; de Meer, H.
    Date of publication: 2010-04-01
    Book chapter

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    The Autonomic Internet project [1] approach relies on abstractions and distributed systems of a five plane solution for the provision of Future Internet Services (OSKMV): Orchestration, Service Enablers, Knowledge, Management and Virtualisation Planes. This paper presents a practical viewpoint of the manageability of virtual networks, exercising the components and systems that integrate this approach and that are being validated. This paper positions the distributed systems and networking services that integrate this solution, focusing on the provision of Future Internet services for self-configuration and selfperformance management scenes

  • GESTION DE SERVICIOS DE NUEVA GENERACION EN INTERNET

     Sanvicente1 Gargallo, Emilio; Postigo Boix, Marcos; Bagnasco Aguirre, Ricardo Javier; Astorga Rivera, Jose Antonio; Melus Moreno, Jose Luis; Gorricho Moreno, Juan Luis; Serrat Fernandez, Juan
    Competitive project

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  • GESTIÓ, POLÍTIQUES DE PREUS I SERVEIS EN XARXES DE NOVA GENERACIÓ (MAPS)

     Bagnasco Aguirre, Ricardo Javier; Melus Moreno, Jose Luis; Sanvicente1 Gargallo, Emilio; Astorga Rivera, Jose Antonio; Postigo Boix, Marcos; Gorricho Moreno, Juan Luis; Valle Alarcon, Rafael; Serrat Fernandez, Juan
    Competitive project

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    Monitoring of a virtual infrastructure testbed  Open access

     Magana, Edgar; Astorga Rivera, Jose Antonio; Serrat Fernandez, Juan; Valle Alarcon, Rafael
    IEEE Latin-American Conference on Communications
    Presentation's date: 2009-09-10
    Presentation of work at congresses

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    This paper presents a SNMP-based Monitoring Agents for Multi-Constrain Resource Scheduling in Grids (SBLOMARS) as an effective solution for resource usage monitoring in virtual network environments. SBLOMARS is different to current large-scale distributed monitoring systems in three essential aspects: Firstly, it reaches a high level of generality by the integration of the SNMP protocol and thus, facilitates to handle heterogeneous operating platforms. Secondly, it is able to self-configure the polling periods of the resources to be monitored depending of network context and finally, it makes use of dynamic software structures to interface with third parties, allowing to be deployed in a wide range of devices, from simple mobile access devices to robust multiprocessor systems or clusters with even multiple hard disks and storage partitions. SBLOMARS has been deployed in EmanicsLab, a virtual laboratory constituted by fourteen nodes distributed in seven European Universities. Although the research is not yet concluded, available results confirm its suitability to deal with the challenges of monitoring virtual networks.

  • A Viewpoint of the Network Management Paradigm for Future Internet Networks

     Rubio Loyola, Javier; Serrat Fernandez, Juan; Astorga Rivera, Jose Antonio; Fischer, Andreas; Berl, Andreas; de Meer, Hermann; Koumoutsos, Giannis
    IFIP/IEEE International Symposium on Integrated Network Management Workshops
    p. 93-100
    DOI: 10.1109/INMW.2009.5195943
    Presentation's date: 2009-06
    Presentation of work at congresses

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  • Management architecture and systems for future

     Galis, Alex; Denazis, S.; Serrat Fernandez, Juan; Rubio Loyola, Javier; Giacomin, P.; Bassi, Alessandro; de Meer, Hermann; Fischer, Andreas; Berl, Andreas; Srassner, J. S.; Macedo, Daniel; Pujolle, Guy
    Date of publication: 2009-05-01
    Book chapter

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    This paper presents a new autonomic management architectural model consisting of a number of distributed management systems running within the network, which are described with the help of five abstractions and distributed systems: Virtualisation, Management, Knowledge, Service Enablers and Orchestration Planes. The envisaged solution is applicable to the management design of Future Internet as a service and self-aware network, which guarantees built-in orchestrated reliability, robustness, context, access, security, service support and self-management of the communication resources and services

  • The 6 The International Conference on Autonomic Computing and Communications

     Postigo Boix, Marcos; Serrat Fernandez, Juan
    Competitive project

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  • A Viewpoint of the Network Management Paradigm for Future Internet Networks

     Rubio-Loyola, J; Serrat Fernandez, Juan; Astorga, A; Fischer, A; Berl, A; Koumoutsos, G
    1st IFIP/IEEE International Workshop on Management of the Future Internet
    Presentation of work at congresses

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  • Service Coalitions for Future Internet Services

     Rubio-Loyola, J; Mérida-Campos, C; Willmott, S; Astorga, A; Serrat Fernandez, Juan; Galis, Alex
    IEEE International Conference on Communications
    Presentation of work at congresses

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  • Multi-Agent Reinforcement Learning in Network Management

     Bagnasco, R; Serrat Fernandez, Juan
    3rd International Conference on Autonomous Infrastructure, Management and Security
    p. 199-202
    Presentation of work at congresses

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  • Review of Knowledge Engineering Requirements for Semantic Reasoning in Autonomic Networks

     Serrat Fernandez, Juan
    11th Asia-Pacific Network Operations and Management Symposium
    Presentation's date: 2008-10-22
    Presentation of work at congresses

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  • MANAGEMENT AND CONTEXT INTEGRATION BASED ON ONTOLOGIES FOR PERVASIVE SERVICE OPERATIONS IN AUTONOMIC COMMUNICATIONS SYSTEMS

     Serrano Orozco, Jaime Martín
    Department of Signal Theory and Communications, Universitat Politècnica de Catalunya
    Theses

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  • A Distributed and Heuristic Policy-based Management Architecture for Large-Scale Grids  Open access

     Magaña Perdomo, Edgar Fco.
    Department of Signal Theory and Communications, Universitat Politècnica de Catalunya
    Theses

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    The aim of this thesis is to design and implement a new Grid Resource Management methodology, where non-massive resources owners would be able to share their resources and integrate human collaboration across multiple domains regardless of network technology, operative platform or administrative domain.This thesis proposes a distributed and heuristic policy-based resource management architecture for large-scale Grids. The resource management architecture proposed herein is composed of four main building blocs: services management, resource discovery and monitoring, resource scheduling and jobs allocation and activation. The Grid Services Management (GSM) and Jobs Allocation and Activation (JAA) are supported by means of a Policy-based Grid Resource Management Architecture (PbGRMA). This architecture is able to identify service needs arising from diverse sources during the deployment and management of Grid Services, such as requirements demanded by customers, applications and network conditions. Afterwards, the PbGRMA merges these requirements into deployment policies for the corresponding Grid Services. The Grid Resource Discovery and Monitoring (GRDM) is supported by the introduction of the SNMP-based Balanced Load Monitoring Agents for Resource Scheduling (SBLOMARS), in which network and computational resources are monitored by distributed agents. This allows for a flexible, heterogeneous and scalable monitoring system. The Grid Resource Scheduling (GRS) is based on the Balanced Load Multi-Constrained Resource Scheduler (BLOMERS). This heuristic scheduler represents an alternate way of solving the inherent NP-hard problem for resource scheduling in large-scale distributed networks by means of the implementation of a Genetic Algorithm.Finally, based on the outcome of both the GRDM and GRS, the PbGRMA allocates the corresponding Grid Services by means of its interfaces with Globus ToolKit Middleware and Unix-based CLI commands along of any large-scale Grid Infrastructure. The synergy obtained by these components allows Grid administrators to exploit the available resources with predetermined levels of Quality of Service (QoS), reducing computational costs and makespan in resource scheduling while ensuring that the resource load is balanced throughout the Grid. The makespan of a schedule is the time required for all jobs to be processed when no one job could be interrupted during its execution and each node can perform at most one operation at any time.This new approach has been successfully tested in a real large-scale scenario such as Grid5000. The results presented along this Thesis show that our general solution is a reliable, flexible and scalable architecture to deploy and manage Grid Services in large-scale Grid Infrastructures. Moreover, the substitution of the heuristic algorithm approach used into the Grid Resource Scheduling (GRS) phase by other non-heuristics selection algorithms could make our solution useful in smaller Grid Infrastructures.

  • FACILITATING AUTONOMIC MANAGEMENT FOR SERVICE PROVISIONING USING ONTOLOGY-BASED FUNCTIONS & SEMANTIC CONTROL

     Serrat Fernandez, Juan
    The 3rd International Workshop on Broadband Convergence Networks
    Presentation's date: 2008-04-07
    Presentation of work at congresses

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  • AN ENHANCED POLICY MODEL TO ENABLE AUTONOMIC COMMUNICATIONS

     Serrat Fernandez, Juan
    Fifth IEEE International Workshop on Engineering Autonomic & Autonomous Systems
    Presentation's date: 2008-03-31
    Presentation of work at congresses

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  • CELTIC Excellence Award

     Serrat Fernandez, Juan
    Award or recognition

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  • Review Of Knowledge Engineering Requirements For Semantic Reasoning In Autonomic Networks

     Strassner, J; Foghlú, M Ó; Donnelly, W; Serrat Fernandez, Juan; Agoulmine, N
    11th Asia-Pacific Network Operations and Management Symposium
    Presentation of work at congresses

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  • Self-organizing management overlays for future internet services

     Rubio, J.; Serrat Fernandez, Juan
    3th IEEE International Workshop on Modelling Autonomic Communication Environments (MACE 2008)
    p. 74-89
    Presentation of work at congresses

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  • Towards an information model that supports service-aware, self-managing virtual resources

     Serrat Fernandez, Juan
    3th IEEE International Workshop on Modelling Autonomic Communication Environments (MACE 2008)
    p. 102-107
    Presentation of work at congresses

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  • Autonomic Internet (Autol)

     Postigo Boix, Marcos; Serrat Fernandez, Juan
    Competitive project

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  • Facilitating autonomic management for service provisioning using ontology-based functions & semantic control

     Serrat Fernandez, Juan
    The 3rd International Workshop on Broadband Convergence Networks
    p. 19-28
    Presentation of work at congresses

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  • An enhanced policy model to enable autonomic communications

     Serrat Fernandez, Juan
    Fifth IEEE International Workshop on Engineering Autonomic & Autonomous Systems
    p. 184-196
    Presentation of work at congresses

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  • AUTONOMIC INTERNET: A PERSPECTIVE FOR FUTURE INTERNET SERVICES BASED ON AUTONOMIC PRINCIPLES

     Serrat Fernandez, Juan
    2nd IEEE International Workshop on Modelling Autonomic Communications Environments
    Presentation's date: 2007-10-29
    Presentation of work at congresses

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  • ONTOLOGY-BASED REASONING FOR SUPPORTING CONTEXT-AWARE SERVICES ON AUTONOMIC NETWORKS

     Serrat Fernandez, Juan
    IEEE International Conference on Communications
    Presentation's date: 2007-06-24
    Presentation of work at congresses

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  • A METHODOLOGICAL APPROACH TO POLICY REFINEMENT IN POLICY-BASED MANAGEMENT SYSTEMS  Open access

     Rubio Loyola, Javier
    Department of Signal Theory and Communications, Universitat Politècnica de Catalunya
    Theses

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    En la actualidad se están realizando diversos esfuerzos para realizar la visión fu-turista de las redes de telecomunicación autogestionadas. La gestión basada en políticas ha sido reconocida como una herramienta potencial para habilitar esta visión. Mayorita-riamente, ésta técnica ha sido reconocida como proveedora de flexibilidad, adaptabilidad y soporte para asignar recursos, controlar Calidad de Servicio y seguridad, de una manera automática y de acuerdo a reglas administrativas. Adicionalmente, se ha considerado que la gestión basada en políticas proveería tal flexibilidad en tiempo de ejecución y como resultado de cambios en la red, interacciones entre usuarios, aplicaciones y disponibilidad de recursos. A pesar de enormes esfuerzos realizados con lenguajes de especificación de políticas, arquitecturas de gestión en diversos dominios y estandarización, la gestión ba-sada en políticas aún no es una realidad. Una de las razones para la reticencia en su utili-zación es la dificultad para analizar políticas que garanticen estabilidad en el sistema. Además de la problemática asociada a la gestión de conflictos entre políticas, otro obstá-culo para su utilización es la dificultad de derivar políticas ejecutables alineadas a objeti-vos administrativos o a otras políticas de alto nivel. Este último es el problema del refi namiento de políticas.Esta Tesis aborda el problema crítico de refinamiento de políticas. Damos una vi-sión completa del proceso de refinamiento, desde el análisis formal hasta su realización práctica, identificando los elementos que intervienen en cada paso de tal proceso. Inicialmente, proponemos un marco de trabajo para refinamiento de políticas ba-sado en Lógica Lineal Temporal, una lógica estándar que permite el análisis en sistemas reactivos. Esta técnica es utilizada para representar políticas a diferentes niveles jerár-quicos de abstracción. Acto seguido desarrollamos mecanismos que habilitan la obten-ción de políticas ejecutables a partir de ciertos requerimientos mediante la utilización de técnicas de exploración de estados basados en Lógica Lineal Temporal. Adicionalmente, aclaramos e identificamos las actividades y tareas de gestión de las partes administrativas durante el ciclo de vida de un sistema de gestión basado en políticas, desde la perspectiva del proceso de refinamiento de políticas. Esta Tesis presenta también directrices para abordar el proceso de refinamiento de políticas en contextos de gestión de red. Damos un paso adelante en la materialización de este proceso mediante la utilización de propiedades estructurales inherentes a sistemas de gestión de red. Proveemos, en fin, una metodología para aplicar los conceptos introduci-dos en el marco de trabajo desarrollado en esta Tesis en sistemas de gestión de red. En esta Tesis también realizamos un proceso de refinamiento de políticas com-pleto. Detallamos la realización de tal proceso en una solución exitosa de gestión basada en políticas. Tomando como base el dominio de Gestión de Calidad de Servicio, aclara-mos y presentamos las implicaciones del problema de refinamiento en este dominio de aplicación.

    Current research efforts are being directed to commit with the long-term view of self management properties for telecommunications networks. One of the key approaches that have been recognised as an enabler of such a view is policy-based management. Pol-icy-based management has been mostly acknowledged as a methodology that provides flexibility, adaptability and support to automatically assign network resources, control Quality of Service and security, by considering administratively specified rules. The hype of policy-based management was to commit with these features in run-time as a result of changeable network conditions resulting from the interactions of users, applications and existing resources. Despite enormous efforts with policy languages, management archi-tectures using policy in different application domains, standardisation and industrial ef-forts, policy-based management is still not a reality. One reason behind the reticence for its use is the difficulty to analyse policies that guarantee configuration stability. In addi-tion to policy conflict analysis, a key issue for this reticence is the need to derive en-forceable policies from high level administrative goals or from higher level policies, namely the policy refinement process.This Thesis deals with the critical nature of addressing the policy refinement problem. We provide a holistic view of this process, from formal analysis to its practical realisation, identifying the key elements involved in each step of such critical process. We initially propose a policy refinement framework relying on Linear Temporal Logic (LTL), a standard logic that allows analysis of reactive systems. Based on the for-mer logic, we lay down the process of representing policies at different levels of abstrac-tion. Following on with this, we develop the mechanisms that enable the abstraction of enforceable policies from hierarchical requirements in a fully automatic manner, making use of Linear Temporal Logic based state exploration techniques. In addition, we clarify and identify the activities and management tasks that the administrative parties should carry out during the life cycle of the policy-based management system, from the perspec tive of the policy refinement process.This Thesis provides the guidelines to address policy refinement in network management contexts. Concretely, we take one step ahead in the materialisation of the policy refinement process by exploiting inherent containment properties of network management systems. For this purpose we provide the methodology to apply the concepts introduced in the policy refinement framework developed in this Thesis in the above context.In this Thesis we also execute a complete and rather detailed policy refinement process for a successful policy-based management solution. Taking the intra-domain Quality of Service Management application domain as background, we clarify and pre-sent the implications of the policy refinement problem in such a concrete application do-main.

  • BLOMERS: Balanced Load Multi-Constrained Resource Scheduler

     Serrat Fernandez, Juan
    Third International Conference on Networkig and Services (ICNS 2007)
    Presentation's date: 2007-06-19
    Presentation of work at congresses

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  • SERVICES MANAGEMENT USING CONTEXT INFORMATION, ONTOLOGIES AND THE POLICY-BASED MANAGEMENT PARADIGM

     Serrat Fernandez, Juan
    1st IEEE Workshop on Autonomic Communications and Network Management (ACNM'07)
    Presentation's date: 2007-05-25
    Presentation of work at congresses

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