Routing method and device implementing said method

A routing method for routing an application data stream from a routing device in a vehicle to a receiving device, said routing device having available to it a plurality of communication means, wherein said method comprises the following steps, implemented by said routing device:

• before a movement of said vehicle:
• obtaining information relating to said movement, said information comprising at least one planned itinerary for said movement and, for each of said plurality of communication means, information necessary to an estimation of at least one parameter representative of a performance of the communication means;
• estimating, by using a machine learning method, along the planned itinerary, for each communication means, said at least one parameter representative of the performance of said communication means based on said information obtained;
• defining theoretical routing rules prior to the departure of the vehicle based on the estimated parameter representative of the performance of the communication means and application requirements;
• during the movement of said vehicle:
• obtaining information relating to said movement, said information comprising at least vehicle position information at an instant t;
• obtaining, for each communication means, information determined at instants prior to the instant t and necessary to the estimating of the parameter representative of the performance at the instant t of the communication means;
• estimating, by using a machine learning method, for each communication means, said parameter representative of the performance at the instant t of the communication means based on the information obtained during the movement;
• comparing, for each communication means, the parameter representative of the performance of the communication means estimated at the instant t with its value estimated before the movement;
• routing said application data stream in response to said comparing, wherein the application data stream is routed using said theoretical routing rules where, for all the communication means, all the estimated parameters representative of the performance at the instant t of the communication means are substantially equal to their respective values estimated before movement, otherwise, defining new routing rules based on the estimated parameters representative of the performance at the instant t of the communication means and on the application requirements, and routing the application data stream by using said new routing rules.