Communication system

• US 8,644,322 B2
• Filed: 06/18/2010
• Issued: 02/04/2014
• Est. Priority Date: 12/21/2007
• Status: Active Grant

• Current Assignee: Bayerische Motoren Werke AG
• Original Assignee: Bayerische Motoren Werke AG
• Inventors: Steffen, Rainer, Hintermaier, Wolfgang
• Primary Examiner(s): Pham, Chi
• Assistant Examiner(s): Mohebbi, Kouroush
• Application Number:
  US12/818,591
• Publication Number:
  US 20100254393A1
• Time in Patent Office: 1,327 Days
• Field of Search: None
• US Class Current: 370/400
• CPC Class Codes: H04L 12/40013 Details regarding a bus controller
• CPC Class Codes: H04L 12/413 with random access, e.g. carrier-sense multiple-access with collision detection [CSMA-CD]
• CPC Class Codes: H04L 12/66 Arrangements for connecting between networks having differing types of switching systems, e.g. gateways
• CPC Class Codes: H04L 2012/40241 Flexray
• CPC Class Codes: H04L 2012/40273 the transportation system being a vehicle
• CPC Class Codes: H04L 69/16 Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]

Abstract

A communication system is provided having a plurality of FlexRay network nodes by which respective user data packets are provided in an IP data packet format or an Ethernet data packet format, and having a FlexRay bus system, by whose physical layer data are transmitted between the FlexRay network nodes. The IP data packet format or the Ethernet data packet format each having a plurality of bit positions. The FlexRay network nodes are set up such that contents of the bit positions of the user data packets are each converted onto corresponding signals of the physical layer of the FlexRay bus system.

Claims

1. A communication system, comprising:

a FlexRay bus system having a physical layer by which data are transmitted between the FlexRay network nodes;

a plurality of FlexRay network nodes by which respective user data packets are provided over the physical layer of the FlexRay bus system while in an IP data packet format or an Ethernet data packet format, said IP data packet format or said Ethernet data packet format each having a plurality of bit positions;

wherein the FlexRay network nodes are configured such that contents of the bit positions of the user data packets are each converted onto corresponding signals of the physical layer of the FlexRay bus system.

2. The communication system according to claim 1, wherein each FlexRay network node is operatively configured such that, via said node, all data packets transmitted by way of the FlexRay bus system are received and interpreted corresponding to the IP data packet format or the Ethernet data packet format.

3. The communication system according to claim 2, wherein the FlexRay network nodes are operatively configured to implement a media access layer by which the user data packets provided in the IP data packet format or the Ethernet data packet format are converted onto corresponding signals of the physical layer of the FlexRay bus system.

4. The communication system according to claim 2, wherein the communication control device is operatively configured such that data are sent by way of a first physical channel and received by way of a second physical channel of the FlexRay bus system.

5. The communication system according to claim 1, wherein the FlexRay network nodes are operatively configured to implement a media access layer by which the user data packets provided in the IP data packet format or the Ethernet data packet format are converted onto corresponding signals of the physical layer of the FlexRay bus system.

6. The communication system according to claim 5, wherein the at least one FlexRay network node comprises a communication control device operatively configured such that the physical layer of the FlexRay bus system comprises a first and a second physical channel, and wherein the communication control device is operatively configured such that data are sent by way of the first physical channel and received by way of the second physical channel.

7. The communication system according to claim 1, wherein at least one FlexRay network node comprises a communication control device operatively configured such that the physical layer of the FlexRay bus system comprises a first and a second physical channel.

8. The communication system according to claim 7, wherein the communication control device is operatively configured such that data are sent by way of the first physical channel and received by way of the second physical channel.

9. The communication system according to claim 8, wherein the communication control device is operatively configured such that the contents of the bit positions of the user data packets in the IP data packet format or the Ethernet data packet format are, in each case, converted onto corresponding signals of the first channel.

10. The communication system according to claim 8, wherein the communication control device is operatively configured such that contents of the bit positions of the user data packets in the FlexRay data frame format are, in each case, converted onto corresponding signals of the second channel.

11. The communication system according to claim 7, wherein the communication control device is operatively configured such that the contents of the bit positions of the user data packets in the IP data packet format or the Ethernet data packet format are, in each case, converted onto corresponding signals of the first channel.

12. The communication system according to claim 11, wherein the communication control device is operatively configured such that contents of the bit positions of the user data packets in the FlexRay data frame format are, in each case, converted onto corresponding signals of the second channel.

13. The communication system according to claim 7, wherein the communication control device is operatively configured such that contents of the bit positions of the user data packets in the FlexRay data frame format are, in each case, converted onto corresponding signals of the second channel.