Publication
Update Rate and Dimension Requirements for Reconfigurable Mirror Arrays in Vehicular Visible Light Communication
Matthias Rüb; Jens Grüber; Christoph Lipps; Hans Dieter Schotten
In: IEEE Vehicular Technology Conference Spring. IEEE Vehicular Technology Conference (VTC-2024), June 24-27, Singapore, Singapore, IEEE, 6/2024.
Abstract
For Visible Light Communication (VLC) between vehicles, maintaining Line of Sight (LoS) is a fundamental requirement.Especially when a sequentially communicating convoy (platoon) is turning at an intersection within a city, the direct line-of-sightconnection can be interrupted, leading to a disruption of VLC communication. Particularly in urban locations with obstructed view,it is crucial for future autonomous driving to convey critical information, such as crossing pedestrians and other obstacles likepartial road closures due to construction sites, to following vehicles. Within the development of Sixth-Generation (6G) wirelessnetworks, the use of Reconfigurable Intelligent Surfaces (RIS) is proposed as one option to address the LoS issue. In this work,a conceivable use case is investigated to examine through ray-optical simulations the requirements for the update rate of suchsystems when RIS elements are reconfigured discontinuously. Additionally, the influence of the size of the device surface areaon the resulting signal strength in the described traffic situation is provided. The findings suggest that delays in updating arrayelements significantly impact situations where the transmitter is far from the intersection, offering crucial insights for autonomousdriving system development.