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

• US 8,457,123 B2
• Filed: 07/29/2008
• Issued: 06/04/2013
• 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: Grotendorst, Thomas, Sthlin, Ulrich
• Primary Examiner(s): PATEL, CHANDRAHAS B
• Application Number:
  US12/746,080
• Publication Number:
  US 20100284384A1
• Time in Patent Office: 1,771 Days
• Field of Search: 370/516, 370/389
• US Class Current: 370/389
• CPC Class Codes: H04W 76/40 for selective distribution or broadcast
• CPC Class Codes: H04W 84/18 Self-organising networks, e.g. ad-hoc networks or sensor 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.

Claims

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

determining a frame type and subtype indicated in a header of a received data frame;

transmitting the received data frame to a first processing device in the vehicle when the frame type and subtype is determined to correspond to the first processing device; and

transmitting the received data frame to a second processing device in the vehicle different than the first processing device in the vehicle when the frame type and subtype is determined to correspond to the second processing device.

2. The method as claimed in claim 1, wherein only one frame type indicated in a received data frame is used to decide about that device to which the data frame is transmitted.

3. The method as claimed in claim 1, wherein at least a 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.

4. The method as claimed in claim 3, wherein the data are transferred to the C2X device or to the other device by an Ethernet interface or software interface.

5. The method as claimed in claim 1, wherein a data frame with a frame type is transferred to a C2X device.

6. The method as claimed in claim 1, wherein the receiver receives the data via an air interface on the basis of a WLAN-802.11 standard.

7. The method as claimed in claim 1, wherein the receiver receives the data via an air interface on the basis of a WLAN-802.11a, WLAN-802.11b, WLAN-802.11g or an WLAN-802.11n standard.

8. The method as claimed in claim 1,

wherein the frame type is a first un-defined frame type in a communication standard utilized by the receiver that is predefined to correspond to the first processing device, or the frame type is a second un-defined frame type in the communication standard that is predefined to correspond to the second processing device.

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

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

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

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

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

providing in a header of data frames with data from a device processing C2X data with at least one frame type and subtype identifier corresponding to the device processing C2X data, and

providing in a header of other 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, 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 data frames are sent to the receiver,

wherein the device processing the data other than the C2X data is different than the device processing the C2X data.

11. A reception device for use in a vehicle comprising:

a decision device for deciding about forwarding received data frames by WLAN to a device processing C2X data or to a device processing other data further based on at least a frame type and subtype in a header of the data frames;

wherein the header is set by a transmitter that transmitted the data frames to the reception device to correspond to the device processing C2X data or the device processing the other data, and

wherein the data is configured to produce a warning signal in the vehicle.

12. A reception device for use in a vehicle comprising:

a decision device for deciding about forwarding received data frames by WLAN to a device processing C2X data or to a device processing other data further on a basis of at least a frame type and subtype of the data frames,

wherein the decision device takes account not only of a frame type but also of a frame subtype of the data frame in a decision, and

wherein the device processing the data other than the C2X data is different than the device processing the C2X data.

13. A transmission device for use in a vehicle for sending data frames comprising:

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

wherein the data frames are transmitted to a receiver with the header allowing the receiver to distinguish that the data frames originated from the C2X device or the device other than the C2X device, and

wherein the C2X device is different than the device other than the C2X device.

14. A transmission device for use in a vehicle for sending data frames 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, and

wherein the transmission device, prior to sending to a receiver by WLAN, distinguishes not only the frame type but also 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.

15. A method for deciding about 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 that device to which data in a data frame are transmitted, and

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