Print Email Facebook Twitter BlendVLC Title BlendVLC: A cell-free VLC network architecture empowered by beamspot blending Author Beysens, Jona (Katholieke Universiteit Leuven) Wang, Q. (TU Delft Embedded Systems) Van Den Abeele, Maxim (Katholieke Universiteit Leuven) Pollin, Sofie (Katholieke Universiteit Leuven) Date 2021 Abstract In visible light communication (VLC), the quality of communication is primarily dominated by line-of-sight links. To ensure an appropriate link quality anywhere, beamsteering has been proposed where transmitters (TXs) dynamically steer their beams to create beamspots on the users. However, these highly dynamic TXs face the beam tracking problem and result in highly variable illumination. In this work, we propose BlendVLC, a cell-free network architecture to improve the mobility robustness of users by blending the beamspots from both steerable and fixed TXs. We solve the beam tracking by designing a centimeter-level visible light positioning algorithm empowered by a neural network. Relying on this location information, we formulate and solve an optimization problem on the beamspot blending, and design a fast and scalable heuristic for large networks. We build a proof-of-concept testbed as well as a simulator to evaluate BlendVLC. We show that it achieves superior performance compared to denser networks with fully fixed TXs. For example, in a large-scale VLC network of 8 m x 4 m, BlendVLC improves the average system throughput by 30%, while only requiring half the number of TXs. Subject BeamsteeringCell-freeMobilityPositioningTrackingVisible light communication To reference this document use: http://resolver.tudelft.nl/uuid:2a29dc7b-66f9-40bc-a39d-48ff4e2f24de DOI https://doi.org/10.1109/INFOCOM42981.2021.9488727 Publisher Institute of Electrical and Electronics Engineers (IEEE) Embargo date 2022-02-01 ISBN 9780738112817 Source INFOCOM 2021 - IEEE Conference on Computer Communications Event INFOCOM 2021: IEEE International Conference on Computer Communications, 2021-05-10 → 2021-05-13, Virtual/online event due to COVID-19, Virtual at Vancouver, Canada Series Proceedings - IEEE INFOCOM, 0743-166X, 2021-May Bibliographical note Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. Part of collection Institutional Repository Document type conference paper Rights © 2021 Jona Beysens, Q. Wang, Maxim Van Den Abeele, Sofie Pollin Files PDF BlendVLC_A_Cell_free_VLC_ ... ding_1.pdf 6.58 MB Close viewer /islandora/object/uuid:2a29dc7b-66f9-40bc-a39d-48ff4e2f24de/datastream/OBJ/view