ClusterRedes de Sistemas Inteligentes
Desde01 janeiro 1985
CentroCentro de Telecomunicações e Multimédia
Mobilidade Eléctrica Sustentada - soluções para a logística associada ao carregamento das baterias dos veículos eléctricos
Ligando Humanos e Sistemas em Zonas Remotas do Oceano através de Comunicações de Banda Larga e Baixo Custo
NOVEL INTEGRATED SOLUTION OF OPERATING A FLEET OF DRONES WITH MULTIPLE SYNCHRONIZED MISSIONS FOR DISASTER RESPONSES
Queiros, R; Almeida, EN; Fontes, H; Ruela, J; Campos, R;
2022 27TH IEEE SYMPOSIUM ON COMPUTERS AND COMMUNICATIONS (IEEE ISCC 2022)
Almeida, EN; Coelho, A; Ruela, J; Campos, R; Ricardo, M;
AD HOC NETWORKS
Lamela, V; Fontes, H; Ruela, J; Ricardo, M; Campos, R;
WNS3 2021: 2021 Workshop on ns-3, Virtual Event, USA
Today, wireless networks are operating in increasingly complex environments, impacting the evaluation and validation of new networking solutions. Simulation, although fully controllable and easily reproducible, depends on simplified physical layer and channel models, which often produce optimistic results. Experimentation is also influenced by external random phenomena and limited testbed scale and availability, resulting in hardly repeatable and reproducible results. Previously, we have proposed the Trace-based Simulation (TS) approach to address the problem. TS uses traces of radio link quality and position of nodes to accurately reproduce past experiments in ns-3. Yet, in its current version, TS is not compatible with scenarios where Multiple-In-Multiple-Out (MIMO) is used. This is especially relevant since ns-3 assumes perfectly independent MIMO radio streams. In this paper, we introduce the Trace-based Wi-Fi Station Manager Model, which is capable of reproducing the Rate Adaptation of past Wi-Fi experiments, including the number of effective radio streams used. To validate the proposed model, the network throughput was measured in different experiments performed in the w-iLab.t testbed, considering Single-In-Single-Out (SISO) and MIMO operation using IEEE 802.11a/n/ac standards. The experimental results were then compared with the network throughput achieved using the improved TS and Pure Simulation (PS) approaches, validating the new proposed model and confirming its relevance to reproduce experiments previously executed in real environments. © 2021 ACM.
Cruz, R; Fontes, H; Ruela, J; Ricardo, M; Campos, R;
Proceedings of the 2020 Workshop on ns-3, WNS3 2020, Gaithersburg, MD, USA, June 17-18, 2020
Coelho, A; Almeida, EN; Ruela, J; Campos, R; Ricardo, M;
2019 IEEE SYMPOSIUM ON COMPUTERS AND COMMUNICATIONS (ISCC)
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