Exploració per autor "Giupponi, Lorenza"
Ara es mostren els items 9-20 de 20
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Evaluating unlicensed LTE technologies: LAA vs LTE-U
Bojovic, Biljana; Giupponi, Lorenza; Ali, Zoraze; Miozzo, Marco (Institute of Electrical and Electronics Engineers (IEEE), 2019-07-01)
Article
Accés obertRecently, there has been much interest by the cellular network industry in utilizing unlicensed spectrum to expand potential capacity. In particular, two LTE unlicensed technologies gained much attention: licensed-assisted ... -
Evaluation of spectrum opportunities in the GSM band
Carniani, Andrea; Giupponi, Lorenza; Verdone, Roberto; Pérez Neira, Ana Isabel (2009)
Text en actes de congrés
Accés obertIn this paper we explore the possibility of exploiting underutilized channels in the GSM bands. The secondary (unlicensed) users of the spectrum are the nodes of an overlay cognitive ad-hoc network, which opportunistically ... -
Fuzzy-based spectrum handoff in cognitive radio networks crowncom
Giupponi, Lorenza; Pérez Neira, Ana Isabel (2008)
Text en actes de congrés
Accés obertThis paper focuses on spectrum handoffs in a cognitive radio network where secondary (unlisenced) users (i.e. cognitive radios) opportunistically use frequency channels as long as the aggregate interference caused at ... -
HetNets: la gestió de la interferència
García Lozano, Mario; Giupponi, Lorenza (2011-12-01)
Article
Accés obert -
New radio beam-based access to unlicensed spectrum: design challenges and solutions
Lagén, Sandra; Giupponi, Lorenza; Goyal, S.; Patriciello, Natale; Bojovic, Biljana; Demir, A.; Beluri, M. (Institute of Electrical and Electronics Engineers (IEEE), 2019-10-24)
Article
Accés obertThis paper elaborates on the design challenges, opportunities, and solutions for New Radio-based access to Unlicensed spectrum (NR-U) by taking into account the beam-based transmissions and the worldwide regulatory ... -
Novel radio environment map for the ns-3 NR simulator
Koutlia, Katerina; Bojovic, Biljana; Lagén Morancho, Sandra; Giupponi, Lorenza (Association for Computing Machinery (ACM), 2021)
Text en actes de congrés
Accés restringit per política de l'editorialRadio Environmental Map (REM) is a useful tool to visualize the network coverage, including signal quality and interference, in multi-cell scenarios. Although REM maps for omnidirectional transmissions/receptions and tools ... -
NR-U and IEEE 802.11 technologies coexistence in unlicensed mmWave spectrum: models and evaluation
Patriciello, Natale; Lagén, Sandra; Bojovic, Biljana; Giupponi, Lorenza (Institute of Electrical and Electronics Engineers (IEEE), 2020-04-13)
Article
Accés obertNew Radio-based access to Unlicensed spectrum (NR-U) intends to expand the applicability of 5G NR access technology to support operation in unlicensed bands by adhering to Listen-Before-Talk (LBT) requirement for accessing ... -
On the potential of ensemble regression techniques for future mobile network planning
Moysen Cortes, Jessica; Giupponi, Lorenza; Mangues Bafalluy, Josep (Institute of Electrical and Electronics Engineers (IEEE), 2016)
Text en actes de congrés
Accés restringit per política de l'editorialPlanning of current and future mobile networks is becoming increasingly complex due to the heterogeneity of deployments, which feature not only macrocells, but also an underlying layer of small cells whose deployment is ... -
Predicting QoS in LTE HetNets based on location-independent UE measurements
Moysen Cortes, Jessica; Giupponi, Lorenza; Baldo, Nicola; Mangues Bafalluy, Josep (Institute of Electrical and Electronics Engineers (IEEE), 2015)
Text en actes de congrés
Accés restringit per política de l'editorialThis paper aims to find patterns of knowledge from physical layer data coming from Heterogeneous Long Term Evolution (LTE) networks. We discuss how the collected data is employed in such a manner that improves Minimization ... -
Realistic beamforming design using SRS-based channel estimate for ns-3 5G-LENA module
Bojovic, Biljana; Lagén Morancho, Sandra; Giupponi, Lorenza (Association for Computing Machinery (ACM), 2021)
Text en actes de congrés
Accés restringit per política de l'editorialBeamforming (BF) is a key procedure to overcome propagation limits in millimeter-wave bands but also to extend network coverage in sub 6 GHz bands, as considered in recent 3GPP and IEEE communication standards. Up to date, ... -
Self coordination among SON functions in LTE heterogeneous networks
Moysen Cortes, Jessica; Giupponi, Lorenza (Institute of Electrical and Electronics Engineers (IEEE), 2015)
Text en actes de congrés
Accés restringit per política de l'editorialIn a self-organized Long Term Evolution (LTE) network, different Self-Organizing Network (SON) functions or different instances of the same SON function can execute parallel actions, which interact or collide among each ... -
Self-coordination of parameter conflicts in D-SON architectures: a Markov decision process framework
Moysen Cortes, Jessica; Giupponi, Lorenza (2015-12-01)
Article
Accés obertWe consider a distributed SON (D-SON) architecture where the interaction of different self-organizing network (SON) functions negatively affect the performances of the system. This is referred to in 3rd Generation Partnership ...