C2X COMMUNICATION WITH REDUCED DATA VOLUME

• US 20120220231A1
• Filed: 05/06/2010
• Published: 08/30/2012
• Est. Priority Date: 06/03/2009
• Status: Active Grant

• Current Assignee: Continental Teves AG & Co. OHG (Continental AG)
• Original Assignee: Continental Teves AG & Co. OHG (Continental AG)
• Inventors: Stählin, Ulrich, Grotendorst, Thomas
• Granted Patent: US 9,316,718 B2
• Time in Patent Office: Days
• US Class Current: 455/41.2
• CPC Class Codes: G01S 5/0072 Transmission between mobile stations, e.g. anti-collision systems
• CPC Class Codes: H04L 67/12 specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks

Abstract

By reducing the packet size for C2X data transmission, it is possible to increase the transmission range and the number of transmitted data packets per unit time. By way of example, only component information items are transmitted, which can be converted into a full information item by the receiver using supplementary information items that come from a different source. In order to obtain the full information items, it is possible to utilize firstly transmission properties of the radio medium and secondly common information bases as determined by the system.

Claims

1-15. -15. (canceled)

16. A communication device for a vehicle for vehicle-to-X communication, said communication device comprising:

a communication unit for receiving first data from an adjacent vehicle, wherein the first data contain a first component information item; and

a control unit for obtaining a full information item from the received first component information item using a supplementary information item which is present in the vehicle;

wherein the first component information item has a smaller data volume than the first full information item.

17. The communication device as claimed in claim 16,

wherein the supplementary information item which is present in the vehicle is at least to some extent the position of the vehicle.

18. The communication device as claimed in claim 16,

wherein the supplementary information item which is present in the vehicle is at least to some extent the current time.

19. The communication device as claimed in claim 16,

wherein the communication unit is designed to send second data to the adjacent vehicle, wherein the second data contain a second component information item;

wherein the control unit is designed to produce the second component information item from a second full information item;

wherein the second component information item has a smaller data volume than the second full information item.

20. The communication device as claimed in claim 19,

wherein the control unit is designed to compress the second data prior to sending.

21. The communication device as claimed in claim 16,

wherein the degree of reduction in the data volume of the first component information item in relation to the data volume of the first full information item is dependent on a transmission property of the communication between the vehicle and the adjacent vehicle.

22. The communication device as claimed in claim 16,

wherein the degree of reduction in the data volume of the first component information item in relation to the data volume of the first full information item is dependent on the geographical latitude at which the vehicle is located.

23. The communication device as claimed in claim 16,

wherein the degree of reduction in the data volume of the first component information item in relation to the data volume of the first full information item is dependent on a maximum transmission range of the communication between the vehicle and the adjacent vehicle.

24. The communication device as claimed in claim 16,

wherein the control unit is designed to perform a plausibility check on the obtained full information item.

25. The communication device as claimed in claim 16, wherein the device is designed for data transmission according to IEEE 802.11p.

26. A vehicle having a communication device as claimed in claim 16.

27. The use of a communication device as claimed in claim 16 in an infrastructure device.

28. A method for vehicle-to-X communication, said method comprising:

receiving first data from an adjacent vehicle, wherein the first data contain a first component information item; and

obtaining a full information item from the received first component information item using a supplementary information item which is present in the receiving vehicle;

wherein the first component information item has a smaller data volume than the first full information item.

29. A non-transitory program element which, when it is executed on a processor in a communication device, prompts the communication device to perform the following steps:

receiving first data from an adjacent vehicle, wherein the first data contain a first component information item; and

obtaining a full information item from the received first component information item using a supplementary information item which is present in the receiving vehicle;

wherein the first component information item has a smaller data volume than the first full information item.

30. A non-transitory computer-readable medium which contains a program element which, when it is executed on a processor in a communication device, prompts the communication device to perform the following steps:

receiving first data from an adjacent vehicle, wherein the first data contain a first component information item; and

obtaining a full information item from the received first component information item using a supplementary information item which is present in the receiving vehicle;

wherein the first component information item has a smaller data volume than the first full information item.