Method and system for providing optimized ethernet communication for vehicle

• US 9,769,114 B2
• Filed: 08/06/2015
• Issued: 09/19/2017
• Est. Priority Date: 04/16/2015
• Status: Active Grant

• Current Assignee: Hyundai Motor Company (Hyundai Motor Group)
• Original Assignee: Hyundai Motor Company (Hyundai Motor Group)
• Inventors: Chae, Jun Byung, Yun, Jin Hwa, Seo, Kang Woon, Kim, Dong Ok, Yu, Sang Woo
• Primary Examiner(s): Meky, Moustafa M
• Application Number:
  US14/820,227
• Publication Number:
  US 20160308822A1
• Time in Patent Office: 775 Days
• CPC Class Codes: H04L 2101/622 Layer-2 addresses, e.g. medium access control [MAC] addresses
• CPC Class Codes: H04L 2101/668 Internet protocol [IP] address subnets
• CPC Class Codes: H04L 61/103 across network layers, e.g. resolution of network layer into physical layer addresses or address resolution protocol [ARP]
• CPC Class Codes: H04L 61/5007 Internet protocol [IP] addresses
• CPC Class Codes: H04L 61/5038 for local use, e.g. in LAN or USB networks, or in a controller area network [CAN]
• 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: H04W 4/48 for in-vehicle communication

Abstract

Disclosed are methods for allocating an address to an Electronic Control Unit (ECU) on an in-vehicle Ethernet network and devices therefor. A method may include allocating a first address value identifying the in-vehicle Ethernet network, allocating a second address value identifying a domain corresponding to the ECU, allocating a third address value identifying a group of ECUs in the allocated domain, allocating a fourth address value identifying the ECU in the group, and generating an IP address including the allocated first to fourth address values. The generated IP address is set as a fixed IP address of the ECU.

Claims

1. A method for allocating an address to an Electronic Control Unit (ECU) on an in-vehicle Ethernet network comprising:

allocating a first address value to identify the in-vehicle Ethernet network;

allocating a second address value to identify a domain corresponding to the ECU;

allocating a third address value to identify a group of ECUs in the domain;

allocating a fourth address value to identify the ECU in the group; and

generating an Internet Protocol (IP) address including the allocated first to fourth address values,

wherein the generated IP address is set as a fixed IP address of the ECU.

2. The method according to claim 1, wherein an interconnection structure of at least one ECU included in the group is identified using the fourth address value.

3. The method according to claim 1, wherein the IP address has an Internet Protocol version 4 (IPv4) address scheme.

4. The method according to claim 3, wherein the IP address is allocated within a range of class A of private internet addresses defined in Request for Comment 1918 (RFC-1918).

5. The method according to claim 1, wherein multicasting on the in-vehicle Ethernet network is controlled using the first to fourth address values of an IP packet to be transmitted.

6. The method according to claim 5, wherein broadcasting in a gateway unit is controlled using the first and second address values included in a destination IP address.

7. The method according to claim 5, wherein broadcasting in a domain unit is controlled using the first and third address values included in a destination IP address.

8. The method according to claim 5, wherein broadcasting in a group unit is controlled using the first and fourth address values included in a destination IP address.

9. The method according to claim 1, wherein the group includes at least one ECU requiring the same security level.

10. The method according to claim 1, wherein the domain includes at least one of a body domain, a powertrain domain, a multimedia domain and a chassis domain.

11. A device for allocating an address to an Electronic Control Unit (ECU), the device comprising:

a unit configured to receive first information that identifies a domain connected to a gateway;

a unit configured to receive second information that identifies the ECU in the domain;

a unit configured to generate an IP address corresponding to the first information and the second information with reference to a pre-defined IP address allocation rule; and

a unit configured to allocate the generated IP address to the ECU,

wherein the ECU is connected to an in-vehicle Ethernet network.

12. The device according to claim 11, wherein the domain includes at least one of a body domain, a powertrain domain, a multimedia domain and a chassis domain.

13. The device according to claim 11, wherein the second information includes third information to identify a group in the domain and fourth information to identify an interconnection structure of ECUs in the group and an ECU type.

14. The device according to claim 13, wherein the group includes at least one ECU requiring the same security level.

15. The device according to claim 11, further comprising a unit configured to transmit the IP address allocated to the ECU to the gateway,

wherein the gateway sets the allocated IP address as a fixed IP address of the ECU.

16. The device according to claim 15, further comprising:

a unit configured to generate an in-vehicle Ethernet routing table in which IP addresses according to domains and groups are mapped; and

a unit configured to transmit the generated in-vehicle Ethernet routing table to the gateway.

17. A gateway for allocating an address to an Electronic Control Unit (ECU) connected to an in-vehicle Ethernet network, the gateway comprising:

a unit configured to receive an in-vehicle Ethernet routing table, in which IP addresses allocated to the ECU according to domains and groups of the in-vehicle Ethernet network are mapped, from an external device;

a unit configured to set an IP address allocated to the ECU using the in-vehicle Ethernet routing table; and

a unit configured to transmit the in-vehicle Ethernet routing table to the ECU using the set IP address,

wherein the gateway and the ECU control transmission and reception of an IP packet using the in-vehicle Ethernet routing table.

18. The gateway according to claim 17, wherein, when the IP packet is received, multicasting on the in-vehicle Ethernet network is controlled using a destination IP address included in the IP packet and the in-vehicle Ethernet routing table.

19. The gateway according to claim 18, wherein the IP address includes a first address value identifying the gateway, a second value identifying a domain connected to the gateway, a third value identifying a group in the domain, and a fourth value identifying an ECU type in the group.

20. The gateway according to claim 19, wherein broadcasting in a gateway unit is controlled using the first address value and the second address value included in the destination IP address.

21. The gateway according to claim 19, wherein broadcasting in a domain unit is controlled using the first address value and the third address value included in the destination IP address.

22. The gateway according to claim 19, wherein broadcasting in a group unit is controlled using the first address value and the fourth address value included in the destination IP address.