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017
Publications

2021

Joint Traffic-Aware UAV Placement and Predictive Routing for Aerial Networks

Authors
Almeida, EN; Coelho, A; Ruela, J; Campos, R; Ricardo, M;

Publication
CoRR

Abstract

2021

Reproducible MIMO operation in ns-3 using trace-based wi-fi rate adaptation

Authors
Lamela, V; Fontes, H; Ruela, J; Ricardo, M; Campos, R;

Publication
ACM International Conference Proceeding Series

Abstract
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.

2020

On the Reproduction of Real Wireless Channel Occupancy in ns-3

Authors
Cruz, R; Fontes, H; Ruela, J; Ricardo, M; Campos, R;

Publication
CoRR

Abstract

2019

A Routing Metric for Inter-flow Interference-aware Flying Multi-hop Networks

Authors
Coelho, A; Almeida, EN; Ruela, J; Campos, R; Ricardo, M;

Publication
2019 IEEE Symposium on Computers and Communications (ISCC)

Abstract

2019

Repeatable and Reproducible Wireless Networking Experimentation through Trace-based Simulation

Authors
Lamela, V; Fontes, H; Oliveira, T; Ruela, J; Ricardo, M; Campos, R;

Publication
CoRR

Abstract