Method for Communicating within an Ad Hoc-Type Motor Vehicle Communication System

• US 20150112590A1
• Filed: 03/21/2013
• Published: 04/23/2015
• Est. Priority Date: 05/23/2012
• Status: Active Grant

• Current Assignee: Yunex GmbH
• Original Assignee: Siemens AG
• Inventors: Kasslatter, Fritz, Freder, Herbert
• Granted Patent: US 9,626,870 B2
• Time in Patent Office: Days
• US Class Current: 701/522
• CPC Class Codes: G08G 1/163 involving continuous checking
• CPC Class Codes: G08G 1/22 Platooning, i.e. convoy of communicating vehicles

Abstract

A method for communicating based on an ad hoc-type motor vehicle communication system, in which transportation users communicate with one another and/or transportation users and the transportation infrastructure communicate, includes determining the valid directions of travel independently based on messages transmitted by transportation users and determining travel in the wrong direction based on these messages. Corresponding further messages may be transmitted in response to the hazardous situation. A transportation infrastructure device and to a transportation user device may implement the method.

Claims

1. A method for communicating based on an ad hoc-type motor vehicle communication system via which transportation users communicate with one another, the transportation users and transportation infrastructure communicate, or both the transportation users communicate with one another and the transportation users and the transportation infrastructure communicate, wherein at least one first radio transceiver device associated with a first transportation user transmits at least one first message to at least one second radio transceiver device in the radio supply area of the first radio transceiver device, the second radio transceiver device being associated with a second transportation user or a transportation infrastructure device, the method comprising:

determining a first direction of a position change of the first transportation user based on the received first message;

determining a history of determined directions based on the first messages;

determining a correlation between the first direction and the history of directions;

making a decision on the presence of a hazardous situation based on the correlation; and

if the correlation value tends to zero and the decision reveals a hazardous situation, using the second radio transceiver devices to transmit a second message to the first radio transmission/radio reception device.

2. The method of claim 1, characterized in that the first message is at least occasionally transmitted in a periodically repeated manner

3. The method of claim 1, characterized in that the duration of the period is set to 100 ms, in particular.

4. The method of claim 1, wherein, if the second radio transceiver device is associated with the transportation infrastructure, making the decision comprises:

determining a value for the time elapsed since the last first message, since the beginning of the recording of first messages, or both since the last first message and the beginning of the recording of first messages; and

determining whether a history is formable, whether there is a correlation, or whether a history is formable and whether there is a correlation; and

if the value exceeds a period of time and a history is not formable or if there is no correlation, making the decision that there is a hazardous situation.

5. The method of claim 1, wherein making the decision comprises determining whether a history is formable, whether there is no correlation, or whether a history is formable and whether there is no correlation.

6. The method of claim 1, wherein the first message comprises a first item of information representing the direction of travel, position, speed, or any combination thereof, of the first transportation user.

7. The method of claim 1, wherein the second message comprises a second item of information that triggers a warning.

8. The method of claim 1, wherein data transmission is implemented according to a dedicated short-range radio communication standard.

9. The method of claim 1, wherein data transmission is implemented according to a wireless access in vehicular environments (WAVE) standard or derivatives thereof.

10. The method of claim 1, wherein data transmission is at least partially implemented according to IEEE 1609.4, intelligent transportation systems (ITS) standards or derivatives of the ITS standards, or any combination thereof.

11. The method of claim 1, wherein data transmission is at least partially implemented according to IEEE 802.11 standards or derivatives thereof.

12. The method of claim 1, wherein higher-priority first data transmission comprising safety-relevant data transmission is formed according to IEEE 802.11e or IEEE 802.11p.

13. The method of claim 1, wherein lower-priority second data transmission comprising user-specific data transmission is formed according to IEEE 802.11a/b/g.

16. The method of claim 1, wherein communication with transportation users is at least partially implemented according to a mobile radio standard.

17. The method of claim 1, wherein communication with transportation users is at least partially implemented according to an intelligent transportation systems (ITS) standard, a vehicle safety communications program (VSC) or an advanced vehicle safety program (AVS).

18. The method of claim 1, wherein communication with transportation users is at least partially implemented according to a continuous-air long and medium range (CALM) standard.

14. (canceled)

15. (canceled)

19. A transportation infrastructure device for communicating based on an ad hoc-type motor vehicle communication system, via which transportation users communicate with one another, the transportation users and transportation infrastructure communicate, or both the transportation users communicate with one another and the transportation users and the transport infrastructure communicate, the transport infrastructure device comprising:

a first radio transceiver device in a radio supply area of a second radio transceiver device, the first radio transceiver device being configured to receive at least one first message transmitted by the second radio transceiver device associated with a transportation user;

means for determining a first direction of a position change of the transportation user based on the first message;

means for forming a history of determined directions based on the first messages;

means for determining a correlation between the first direction and the history of directions;

means for making a decision on the presence of a hazardous situation based on the correlation; and

means for forming a second message for transmission to the second radio transceiver device by the first radio transceiver device if the correlation value tends to zero and the decision reveals a hazardous situation.

20. A transportation user device for communicating based on ad hoc-type motor vehicle communication system, via which transportation users communicate with one another, the transportation users and transportation infrastructure communicate, or both the transportation users communicate with one another and the transportation users and the transport infrastructure communicate,

means for using a first radio transceiver device associated with the transportation user device to transmit at least one first message to a second transceiver device in the radio supply area of the first radio transceiver device the second transceiver device being associated with a second transportation user or a transportation infrastructure device, wherein the first message is transmitted such that a first direction of a position change of the first transportation user is determined based on the received first message;

means for receiving a second message transmitted in the event of a decision; and

means for implementing a procedure based on the hazardous situation, the decision being made if the correlation value tends to zero.