Method For Vehicle Communication

• US 20070213923A1
• Filed: 04/23/2004
• Published: 09/13/2007
• Est. Priority Date: 04/23/2003
• Status: Active Grant

• Current Assignee: Ab Tryggit
• Original Assignee: Ab Tryggit
• Inventors: Brynielsson, Thore
• Granted Patent: US 7,945,381 B2
• Time in Patent Office: Days
• US Class Current: 701/200
• CPC Class Codes: G08G 1/081 Plural intersections under common control
• CPC Class Codes: G08G 1/127 to a central station ; Indicators in a central station

Abstract

A method is disclosed for communication between a vehicle travelling along a route and a stationary system. The vehicle is equipped with a communication unit to communicate messages to the stationary system. The method includes dividing the route into a plurality of partial sections, defining for each partial section a required information flow from the vehicle, and adapting the communication to this definition. The method makes it possible to command the communication unit to communicate with correctly adjusted accuracy. This also improves the possibility of effectively utilising the traffic information in local units, for instance for displays and traffic signals.

Claims

1. A method in communication between a vehicle travelling along a route and a stationary system, the vehicle including a communication unit to communicate messages to the stationary system, the method comprising:

dividing the route into a plurality of partial sections;

defining for each partial section a required information flow from the vehicle; and

adapting the communication to the definition.

2. A method as claimed in claim 1, further comprising:

creating a set of parameters which define at least one of when messages should be sent and content of the messages; and

communicating the set to the vehicle, so that the communication unit is capable of adapting the communication.

3. A method as claimed in claim 1, further comprising:

associating each partial section with one of a plurality of predetermined classes, which each define an adaptation of the information flow; and

determining which class the current partial section is associated with, and adapting the communication according to this class.

4. A method as claimed in claim 1, wherein the adaptation comprises shifting between time-controlled communication and distance-controlled communication.

5. A method as claimed in claim 1, wherein the adaptation comprises changing a longest time period which is allowed to pass before the next messages are sent.

6. A method as claimed in claim 1, wherein the adaptation comprises changing a fixed longest section along which the vehicle is allowed to travel before the next messages are sent.

7. A method as claimed in claim 1, wherein the adaptation comprises indicating fixed points along the route at which messages are to be sent.

8. A method as claimed in claim 1, wherein the adaptation comprises indicating an event which is to initiate transmission of a message.

9. A method as claimed in claim 1, wherein the adaptation comprises affecting the contents of the message.

10. A method as claimed in claim 1, wherein each message contains information about at least one of vehicle position, vehicle speed and state of the vehicle equipment.

11. A method as claimed in claim 2, further comprising:

associating each partial section with one of a plurality of predetermined classes, which each define an adaptation of the information flow; and

determining which class the current partial section is associated with, and adapting the communication according to this class.

12. A method as claimed in claim 2, wherein the adaptation comprises shifting between time-controlled communication and distance-controlled communication.

13. A method as claimed in claim 2, wherein the adaptation comprises changing a longest time period which is allowed to pass before the next messages are sent.

14. A method as claimed in claim 2, wherein the adaptation comprises changing a fixed longest section along which the vehicle is allowed to travel before the next messages are sent.

15. A method as claimed in claim 2, wherein the adaptation comprises indicating fixed points along the route at which messages are to be sent.

16. A method as claimed in claim 2, wherein the adaptation comprises indicating an event which is to initiate transmission of a message.

17. A method as claimed in claim 2, wherein the adaptation comprises affecting the contents of the message.

18. A method as claimed in claim 2, wherein each message contains information about at least one of vehicle position, vehicle speed and state of the vehicle equipment.