Visible Light Communications: A Novel Indoor Network Planning Approach

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We propose a Partition-based Visibility (PV) graph modeling to find the minimum number of Visible Light Communications (VLC) nodes and their locations for reliable indoor coverage. VLC network offers a low-cost technology on a license-free spectrum to complement the contemporary mobile network services offered on Radio Frequency (RF) bands. However, VLC suffers from propagation limits: Firstly, in presence of opaque obstacles such as walls, doors, and even curtains, strong link blockage is experienced as the power of reflections is much weaker than the power of the Line-of-Sight (LoS) link. Secondly, the received optical power at users drops as the angle of irradiance between a LED lamp and the user increases, imposing a range constraint on the VLC nodes. So, inspired by the Art Gallery Problem, we optimize the number and the locations of VLC nodes by characterizing the PV graph as a dual presentation of the floor plan and a Maximal Clique Clustering algorithm, which is able to solve not only the art gallery problem but also to extend the approach for the range constrained case.

Original languageEnglish
Title of host publication2021 IEEE Global Communications Conference, GLOBECOM 2021 - Proceedings
Number of pages7
ISBN (Electronic)9781728181042
Publication statusPublished - 2021
MoE publication typeA4 Conference publication
EventIEEE Global Communications Conference - Madrid, Spain
Duration: 7 Dec 202111 Dec 2021


ConferenceIEEE Global Communications Conference
Abbreviated titleGLOBECOM
Internet address


  • Art gallery problem
  • Indoor coverage
  • Irregular floor plan
  • Line-of-Sight
  • Network Planning
  • Visibility graph
  • Visible Light Communications


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