Chain Branch Leaf-Gateway, a Strategy for Dynamic Clustering and Optimal Coverage of Communication for Automated Mobility
Résumé
One of the main issues with embedded sensors
in Automated Vehicle (AV) concerns their limited perception
capabilities (limited range) and short-term reaction to only close
events. However, for safer operations, AVs need to anticipate
distant events. To reach this goal, it is essential to propose efficient
communication architectures and strategies that guarantee a high
level of Quality of Service (QoS). Therefore, cooperation among
communication "nodes" is essential to establish and maintain the
links between vehicles or vehicles and infrastructure. However,
the communication links could be interrupted in some situations
such as Vehicles leaving the area covered by the communications
(vehicle alone or in low vehicle density), or the high velocity of
vehicles (reduced range). This paper proposes an improvement of
the Chain Branch Leaf (CBL) strategy with the implementation
of a Gateway mechanism (CBL-G). The initial Vehicle-to-Vehicle
(V2V) strategy is now extended with a Vehicle-to-Infrastructure
(V2I) configuration in motorway areas in order to guarantee V2X
architecture. CBL-G objective is to develop a dynamic communication
clustering strategy with a distributed and dedicated Road
Side Units (RSU) topology for optimal communication coverage.
The proposed solution improves the QoS for critical functions
(i.e risk assessment, accurate and distributed localization) by
redirecting isolated vehicle nodes and clusters to RSUs.