Abstract: A method of communication between a source node in motion and a destination node. The method includes the following steps implemented by the destination node: receiving a packet sent by the source node, said packet including current mobility information relating to the source node; and, for routing at least one response packet intended for the source node: predicting a location geographical area of the source node from the current mobility information relating to the source node contained in said packet received therefrom beforehand, the geographical area thus predicted purportedly being a destination geographical area; at least one step of sending to the destination geographical zone another packet containing said response packet and the destination geographical zone and, if appropriate, passing in transit through at least one intermediate node of a vehicular network.

Abstract: A mobile terminal is authenticated in a packet transmission mobile network comprising an access network responsible for authenticating said mobile terminal and an access point to said access network. A counter indicating the number of authentication requests already received is managed. At the access network level, an authentication request is received from the mobile terminal. Then the counter is incremented by one. Then the mobile terminal is authenticated, the number indicated by the counter is compared with a threshold value, and, on the basis of that comparison, it is decided whether to authorize the authenticated mobile terminal to assume the role of the access network to authenticate another mobile terminal.

Abstract: A method of communication between a source node in motion and a destination node. The method includes the following steps implemented by the destination node: receiving a packet sent by the source node, said packet including current mobility information relating to the source node; and, for routing at least one response packet intended for the source node: predicting a location geographical area of the source node from the current mobility information relating to the source node contained in said packet received therefrom beforehand, the geographical area thus predicted purportedly being a destination geographical area; at least one step of sending to the destination geographical zone another packet containing said response packet and the destination geographical zone and, if appropriate, passing in transit through at least one intermediate node of a vehicular network.