Use of the WLAN standard for a C2C communication by adding new packet types

• US 8,451,812 B2
• Filed: 12/04/2008
• Issued: 05/28/2013
• Est. Priority Date: 12/06/2007
• Status: Active Grant

• Current Assignee: Continental Teves AG & Co. OHG (Continental AG)
• Original Assignee: Continental Teves AG & Co. OHG (Continental AG)
• Inventors: Sthlin, Ulrich, Grotendorst, Thomas, Birke, Carsten, Menzel, Marc, Scherping, Richard
• Primary Examiner(s): PATEL, CHANDRAHAS B
• Application Number:
  US12/746,027
• Publication Number:
  US 20100303048A1
• Time in Patent Office: 1,636 Days
• Field of Search: 370/338, 370/346, 370/449
• US Class Current: 370/338
• 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
• CPC Class Codes: H04L 67/52 specially adapted for the location of the user terminal
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]

Abstract

C2X communication is made possible efficiently via WLAN by apparatuses and a method for filtering data frames received by a vehicle from a receiver via a WLAN connection, wherein a frame type indicated in a received data frame is used to decide that device to which data in the data frame are transmitted. The C2X communication can be used for recognizing pedestrians. It is also possible to use a plurality of transmission paths and/or UDP.

Claims

1. A method for deciding about a further transmission of data frames received by a receiver in a vehicle via a WLAN connection,

wherein a frame type indicated in a received data frame is used to decide about a device to which data in the data frame are transmitted;

wherein the data are sent to the receiver by a mobile transmission device of a pedestrian;

wherein the data can be used to produce a warning signal in the vehicle; and

wherein a frame type indicated in a received data frame and a frame subtype are used to decide about the device to which the data frame is transmitted.

2. A method for sending a data frame to a receiver via a WLAN connection using a communication standard, said method comprising the steps of:

providing in a portion of a header of data frames undefined by the communication standard with data from a device processing C2X data with at least one frame type identifier corresponding to a device processing C2X data in the receiver,

providing in the portion of the header of data frames with data from a device processing data other than the C2X data with a different frame type identifier corresponding to the device processing data other than the C2X data in the receiver, the different frame type identifier being different than the frame type identifier used for data originating from the device processing C2X data, the different frame type identifier being provided before the data frames are sent to the receiver,

wherein the receiver is a mobile transmission device of a pedestrian; and

wherein the frame type identifier identifies the device processing C2X data or the device processing data other than C2X data within the receiver for receiving the data frame;

wherein the data contain information about a position of a vehicle.

3. The method as claimed in claim 2 further comprising the step of sending the data to the receiver on the basis of a further communication technique.

4. The method as claimed in claim 3, wherein the further communication technique is based on the WLAN-802.11p standard.

5. A communication system for a vehicle that is configured to carry out a method as claimed in claim 2.

6. A method for sending a data frame to a receiver via a WLAN connection, said method comprising the steps of:

providing data frames with data from a device processing C2X data with at least one frame type identifier,

providing data frames with data from a device processing data other than the C2X data with a different frame type identifier than the frame type identifier used for data originating from the device processing C2X data, before the data frames are sent to the receiver,

wherein the receiver is a mobile transmission device of a pedestrian,

wherein the data contain information about a position of a vehicle, and

wherein prior to sending to a receiver by WLAN, the transmission device distinguishes a frame type and a subtype of the data frame differently for data in a data frame which originate from a C2X device than for data which originate from a device other than the C2X device.

7. A reception device for use in a vehicle using a communication standard, comprising:

a decision device for deciding about forwarding, by WLAN, received data frames to a device processing C2X data in the receiver or to a device processing other data in the receiver based on the frame type indicated in a portion of a header of the data frames undefined by the communication standard;

wherein the data frames are sent to a receiver by a mobile transmission device of a pedestrian which sets the frame type in the portion of the header to identify the device processing C2X in the receiver or to identify the device processing the other data in the receiver; and

wherein the data is configured to be used to produce a warning signal in the vehicle warning the driver of the vehicle of the pedestrian.

8. A communication system for a vehicle having a reception device as claimed in claim 7.

9. A reception device for use in a vehicle, having a decision device for deciding about forwarding, by WLAN, received data frames to a device processing C2X data or to a device processing other data on a basis of at least the frame type of the data frames;

wherein the data frames are sent to a receiver by a mobile transmission device of a pedestrian;

wherein the data is configured to be used to produce a warning signal in the vehicle; and

wherein the decision device takes account of a frame type and a frame subtype of the data frame in a decision.

10. A transmission device for use in a vehicle for sending data frames to a receiver using a communication standard, said transmission device comprising:

a distinguishing device for

     1) distinguishing data frames with at least one frame type in a portion of the header of the data frames undefined by the communication standard and which originate from and correspond to a C2X device prior to sending, and for

     2) distinguishing data frames with another frame type in the portion of the header of the frames which originate from and correspond to a device other than the C2X device;

wherein the data frames are transmitted to the receiver with the header allowing the receiver to identify that the data frames originated from the C2X device or the device other that the C2X device; and

wherein the data frames are configured to be used as a method for pedestrian protection.

11. A communication system for a vehicle having a transmission device as claimed in claim 10.

12. A transmission device for use in a vehicle for sending data frames to a receiver, said transmission device comprising:

a distinguishing device for distinguishing data frames with at least one frame type which originate from a C2X device prior to sending, and for distinguishing data frames with a frame type other than a frame type with which data packets originating from the C2X device are distinguished which originate from a device other than the C2X device;

wherein the data frames are configured to be used as a method for pedestrian protection; and

wherein the distinguishing is based on a frame type and a frame subtype of the data frame.

13. A method for deciding about a further transmission of data frames received by a receiver in a vehicle via a WLAN connection using a communication standard, comprising:

determining, by the receiver, a frame type indicated in a portion of a header of a received data frame undefined by the communication standard; and

forwarding, by the receiver, the received data frame to a processing device of at least two processing devices in the vehicle selected based on the determined frame type,

wherein the data are sent to the receiver by a mobile transmission device of a pedestrian which sets the frame type to identify the processing device in the vehicle for receiving the data, and

wherein the data is used to produce a warning signal in the vehicle warning a driver of the vehicle of the pedestrian.

14. The method as claimed in claim 13, wherein a data frame with a frame type is transferred to a C2X device.

15. The method as claimed in claim 13, wherein the receiver receives the data via an air interface on a basis of a WLAN-802.11 standard.

16. The method as claimed in claim 13, wherein the data are used to produce a warning signal in the vehicle.

17. The method as claimed in claim 13, wherein the data are received by the receiver on a basis of a further communication technique.

18. The method as claimed in claim 17, wherein the further communication technique is based on the WLAN-802.11p standard.

19. The method as claimed in claim 13, wherein the receiver receives the data via an air interface on a basis of a WLAN-802.11a standard, a WLAN-802.11b standard, a WLAN-802.11g standard or a WLAN-802.11n standard.

20. The method as claimed in claim 13, wherein only one frame type indicated in a received data frame is used to decide about the device to which the data frame is transmitted.

21. A communication system for a vehicle that is configured to carry out a method as claimed in claim 13.

22. The method as claimed in claim 13, wherein at least the frame type is taken as a basis for deciding whether the data are transferred to a device processing C2X data or to a device processing other data.

23. The method as claimed in claim 22, wherein the data are transferred to the device processing C2X data or to the device processing other data by an Ethernet interface or software interface.