R
Robson D. Vieira
Researcher at Nokia
Publications - 56
Citations - 1360
Robson D. Vieira is an academic researcher from Nokia. The author has contributed to research in topics: Wireless & Wireless network. The author has an hindex of 13, co-authored 56 publications receiving 1285 citations. Previous affiliations of Robson D. Vieira include Aalto University & Pontifical Catholic University of Rio de Janeiro.
Papers
More filters
Proceedings ArticleDOI
Enabling LTE/WiFi coexistence by LTE blank subframe allocation
Erika Portela Lopes de Almeida,Andre Mendes Cavalcante,Rafael C. D. Paiva,Fabiano Chaves,Fuad Mousse Abinader,Robson D. Vieira,Sayantan Choudhury,Esa Tuomaala,Klaus Doppler +8 more
TL;DR: This paper considers two of the most prominent wireless technologies available today, namely Long Term Evolution (LTE), and WiFi, and addresses some problems that arise from their coexistence in the same band, and proposes a simple coexistence scheme that reuses the concept of almost blank subframes in LTE.
Proceedings ArticleDOI
Performance Evaluation of LTE and Wi-Fi Coexistence in Unlicensed Bands
Andre Mendes Cavalcante,Erika Portela Lopes de Almeida,Robson D. Vieira,Fabiano Chaves,Rafael C. D. Paiva,Fuad Mousse Abinader,Sayantan Choudhury,Esa Tuomaala,Klaus Doppler +8 more
TL;DR: A simulator-based system- level analysis in order to assess the network performance in an office scenario shows that LTE system performance is slightly affected by coexistence whereas Wi-Fi is significantly impacted by LTE transmissions.
Journal ArticleDOI
Enabling the coexistence of LTE and Wi-Fi in unlicensed bands
Fuad Mousse Abinader,Erika Portela Lopes de Almeida,Fabiano Chaves,Andre Mendes Cavalcante,Robson D. Vieira,Rafael C. D. Paiva,Angilberto M. Sobrinho,Sayantan Choudhury,Esa Tuomaala,Klaus Doppler,Vicente A. de Sousa +10 more
TL;DR: The issues that arise from the concurrent operation of LTE and Wi-Fi in the same unlicensed bands from the point of view of radio resource management are discussed and it is shown that Wi-fi is severely impacted by LTE transmissions.
Proceedings ArticleDOI
LTE UL Power Control for the Improvement of LTE/Wi-Fi Coexistence
Fabiano Chaves,Erika Portela Lopes de Almeida,Robson D. Vieira,Andre Mendes Cavalcante,Fuad Mousse Abinader,Sayantan Choudhury,Klaus Doppler +6 more
TL;DR: The proposed LTE UL power control with interference aware power operating point is a flexible tool to deal with the trade-off between LTE and Wi-Fi performances in coexistence since it is able to set different LTE/Wi-Fi coexistence configurations with the choice of a single parameter.
Journal ArticleDOI
Molé: a scalable, user-generated WiFi positioning engine
Jonathan Ledlie,Jun-geun Park,Dorothy Curtis,Andre Mendes Cavalcante,Leonardo Camara,Afonso Costa,Robson D. Vieira +6 more
TL;DR: The design, implementation, and evaluation of Molé are described, a mobile organic localization engine that employs several new techniques, including a new statistical positioning algorithm to differentiate between neighboring places, a motion detector to reduce update lag, and a scalable “cloud”-based fingerprint distribution system.