Ara es mostren els items 74-93 de 136

    • Low complexity nano-networks routing scenarios and strategies 

      Almeida Amazonas, José Roberto de; Hesselbach Serra, Xavier; Ferreira Giozza, William (2021-06)
      Article
      Accés obert
      One of the big challenges in nano-networks is the capacity to route packets using simple strategies, in inhospitable and stimulating environments. The strict physical limitations coming from the nano-devices are constraining ...
    • Machine learning models for traffic classification in electromagnetic nano-networks 

      Galal Mahmoud Ibrahim, Akram; Hesselbach Serra, Xavier (Institute of Electrical and Electronics Engineers (IEEE), 2022-04-13)
      Article
      Accés obert
      The number of nano-sensors connected to wireless electromagnetic nano-network generates different traffic volumes that have increased dramatically, enabling various applications of the Internet of nano-things. Nano-network ...
    • Machine learning requirements for energy-efficient virtual network embedding 

      Hesselbach Serra, Xavier; Escobar Pérez, David (2023-05-31)
      Article
      Accés obert
      Network virtualization is a technology proven to be a key enabling a family of strategies in different targets, such as energy efficiency, economic revenue, network usage, adaptability or failure protection. Network ...
    • Making data centres fit for demand response: introducing GreenSDA and GreenSLA contracts 

      Basmadjian, Robert; Botero Vega, Juan Felipe; Giuliani, Giovanni; Hesselbach Serra, Xavier; Klingert, Sonja; de Meer, Hermann (2016-11-23)
      Article
      Accés obert
      The power grid has become a critical infrastructure, which modern society cannot do without. It has always been a challenge to keep power supply and demand in balance; the more so with the recent rise of intermittent ...
    • Management of resources under priorities in EON using a modified RDM based on the squatting-kicking approach 

      Hesselbach Serra, Xavier; Dantas, Joana; Amazonas, José Roberto de Almeida; Botero Vega, Juan Felipe; Piney da Silva, José Ramón (Institute of Electrical and Electronics Engineers (IEEE), 2016)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The paper proposes a resources allocation method for EON based on a modified RDM using squatting and kicking strategies in order to prioritise the usage of channels and enhancing the total utilisation. It can also be used ...
    • MANTICORE II: IP Network as a Service Pilots at HEAnet, NORDUnet and RedIRIS 

      Cabello, Isidro; Simeonidou, Dimitra; Lonvich, Chris; Uze, Jean Marc; de Miguel, Tomas P.; Fischer, Lars; Wilson, Dave; Reijs, Victor; Grasa Gras, Eduard; Figuerola, Sergi; Barrera, Xavier; Ferrao, Laia; Baez, Carlos; Minoves, Pau; Hesselbach Serra, Xavier; Botero Vega, Juan Felipe (2010)
      Text en actes de congrés
      Accés obert
      MANTICORE II follows the Infrastructure as a Service (IaaS) paradigm to enable National Research and Education Networks (NRENs) and other e-infrastructure providers to enhance their service portfolio by building and piloting ...
    • Multi constraint network virtualization strategy based on Paths Algebra for non-linear parameters 

      Hesselbach Serra, Xavier; Amazonas, Jose Roberto; Gutiérrez Anato, Alejandro (Universitat de les Illes Balears, 2015)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      One of the main challenges in network virtualization is the virtual network embedding problem (VNE). The objective of the VNE is to map a set of Virtual Network Requests (VNR) to physical nodes and links. VNR is composed ...
    • Nano-networks communication architecture: Modeling and functions 

      Galal Mahmoud Ibrahim, Akram; Hesselbach Serra, Xavier (2018-09-01)
      Article
      Accés obert
      Nano-network is a communication network at the Nano-scale between Nano-devices. Nano-devices face certain challenges in functionalities, because of limitations in their processing capabilities and power management. Hence, ...
    • Nano-networks communication architecture: modeling and functions 

      Galal Mahmoud Ibrahim, Akram; Hesselbach Serra, Xavier (2018-09)
      Article
      Accés obert
      Nano-network is a communication network at the Nano-scale between Nano-devices. Nano-devices face certain challenges in functionalities, because of limitations in their processing capabilities and power management. Hence, ...
    • Network function virtualization aware offline embedding problem using squatting-kicking strategy for elastic optical networks 

      Hamouda, Ahmed Mohamed Abdelaty Elmekkawi; Hesselbach Serra, Xavier; Piney da Silva, José Ramón (Institute of Electrical and Electronics Engineers (IEEE), 2018)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Network Function Virtualization (NFV) has recently become one of the most attractive technologies in telecommunication industry due to its ability to realize Network Services (NSs) on general-purpose hardware hence replacing ...
    • Nfv-enabled efficient renewable and non-renewable energy management: requirements and algorithms 

      Tipantuña Tenelema, Christian José; Hesselbach Serra, Xavier (2020-10-14)
      Article
      Accés obert
      The increasing worldwide energy demand, the CO2 emissions generated due to the production and use of energy, climate change, and the depletion of natural resources are important concerns that require new solutions for ...
    • NFV-enabled optimal spectrum allocation in flex-frid optical networks 

      Tipantuña Tenelema, Christian José; Hesselbach Serra, Xavier (2020)
      Text en actes de congrés
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      This paper proposes an NFV-Enabled optimal spectrum allocation solution applicable to fixed-grid and flex-grid wavelength division multiplexing (WDM) optical networks. By exploiting the frequency shifting capability of ...
    • NFV/SDN enabled architecture for efficient adaptive management of renewable and non-renewable energy 

      Tipantuña Tenelema, Christian José; Hesselbach Serra, Xavier (Institute of Electrical and Electronics Engineers (IEEE), 2020-04-01)
      Article
      Accés obert
      Ever-increasing energy consumption, the depletion of non-renewable resources, the climate impact associated with energy generation, and finite energy-production capacity are important concerns that drive the urgent creation ...
    • Novel NFV aware network service for intelligent network slicing based on squatting-kicking model 

      Hamouda, Ahmed Mohamed Abdelaty Elmekkawi; Hesselbach Serra, Xavier; Piney da Silva, José Ramón (Institute of Electrical and Electronics Engineers (IEEE), 2020-12-15)
      Article
      Accés obert
      Future networks starting from 5G will depend on network slicing to meet a wide range of network services (NSs) with various quality of service (QoS) requirements. With the powerful Network Function Virtualization (NFV) ...
    • Offline and online power aware resource allocation algorithms with migration and delay constraints 

      Hejja, Khaled A. M.; Hesselbach Serra, Xavier (2019-07-20)
      Article
      Accés obert
      In order to handle advanced mobile broadband services and Internet of Things (IoT), future Internet and 5G networks are expected to leverage the use of network virtualization, be much faster, have greater capacities, provide ...
    • On the complex scheduling formulation of virtual network functions over optical networks 

      Ferrer Riera, Jordi; Hesselbach Serra, Xavier; Escalona Zorita, Eduard; García Espin, Joan Antoni; Grasa, Eduard (Institute of Electrical and Electronics Engineers (IEEE), 2014)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Software-Defined Networking and Network Functions Virtualisation has brought a revolution within the telecom market landscape. Initial proof-of-concept prototypes for NFV-enabled solutions are being developed at the same ...
    • On the quality of service enhancement in variable bit rate networks 

      Hesselbach Serra, Xavier (Institute of Electrical and Electronics Engineers (IEEE), 1998-04)
      Article
      Accés obert
      The transmission of multimedia contents through broadband networks is constrained by a certain Quality of Service (QoS) that must be guaranteed. Textual contents need few network resources and no real time constraints are ...
    • Online power aware coordinated virtual network embedding with 5G delay constraint 

      Hejja, Khaled A. M.; Hesselbach Serra, Xavier (2018-12-15)
      Article
      Accés obert
      Solving virtual network embedding problem with delay constraint is a key challenge to realize network virtualization for current and future 5G core networks. It is an NP-Hard problem, composed of two sub-problems, one for ...
    • Optimal mapping of virtual networks with hidden hops 

      Botero Vega, Juan Felipe; Hesselbach Serra, Xavier; Fischer, Andreas; de Meer, Hermann (2012-12-01)
      Article
      Accés obert
      Network virtualization has emerged as a solution for the Internet inability to address the required challenges caused by the lack of coordination among Internet service providers for the deployment of new services. The ...
    • Optimal occupancy mapping of virtual networks over elastic optical infrastructures 

      Hesselbach Serra, Xavier (Institute of Electrical and Electronics Engineers (IEEE), 2017)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      One of the main challenges in Network Virtualization deals with the efficient mapping of virtual resources onto optical physical resources. This is commonly referred by Virtual Optical Network Embedding (VONE). The application ...