Communication Device and Communication System as Well as Method of Communication Between and Among Mobile Nodes Such as Vehicles

A method for communication between and among mobile nodes (10, 12, 14, 16), in particular between and among vehicles, with each node (10, 12, 14, 16) being designed for

• [i] determining and/or monitoring the moving direction and/or the current position of the respective node (10, 12, 14, 16), in particular
• [i.a] calculating the average moving direction and
• [i.b] determining and/or monitoring if there is a change in the average moving direction of the respective node (10, 12, 14, 16), and
• [ii] receiving at least one arriving message (32, 34, 36) being communicated, in particular broadcasted and/or rebroadcasted, by at least one neighbouring node (12, 14, 16), and
• [iii] communicating, in particular broadcasting and/or rebroadcasting, at least one message (22), wherein each message (22;
• 32, 34, 36) being communicated between and among the nodes (10, 12, 14, 16)
• is assigned
• to at least one message type and/or message subject, in particular by means of at least one event code, and
• to at least one direction area, for example north, east, south or west, relating to the moving direction of the node (10, 12, 14, 16) by which the respective message (22;
• 32, 34, 36) is transmitted and
• comprises at least one acknowledgement array, in particular at least one acknowledgement field, comprising at least one information regarding to the respective direction area of the, in particular of all, messages (22;
• 32, 34, 36)
• being assigned to the same message type and/or message subject and
• being communicated
• within a certain local area around at least one zone (80) of relevance, in particular within a predetermined range to live, and/or
• within a certain time of relevance, in particular within a predetermined time to live.

The method according to 7 , characterized in that

• [i.c] in case of direction change
• [i.d] at least one direction ownership list or direction ownership table comprising information regarding to
• at least one unique source and/or
• at least one message identifying code and/or
• the moving direction of the node (10, 12, 14, 16) by which the respective message (22;
• 32, 34, 36) is transmitted, and/or
• the desire to release the message (22;
• 32, 34, 36) is inquired, and/or
• [i.e] it is determined whether the respective node (10, 12, 14, 16) holds the ownership for any direction area or not,
• [i.f] wherein in case of step [i.e] being true it is determined whether the ownership of the direction area is resumed by the respective node (10, 12, 14, 16) or not,
• [i.g] wherein in case of step [i.f] being not true, the ownership of the direction area is released, and/or
• [iii.a] the message (22;
• 32, 34, 36) is rebroadcasted
• [iii.a.1] until the certain local area around at the zone (80) of relevance is left and/or
• [iii.a.2] until the certain time of relevance is expired, in particular the message (22;
• 32, 34, 36) comprising the information that the direction area released in step [i.g] is not owned by at least one of the nodes (10, 12, 14, 16).