Method and protocol for diagnostics or arbitrarily complex networks of devices

• US 7,523,237 B2
• Filed: 03/31/2005
• Issued: 04/21/2009
• Est. Priority Date: 04/01/2004
• Status: Expired due to Fees

• Current Assignee: Aptiv Technologies Limited (BorgWarner Incorporated)
• Original Assignee: Delphi Technologies, Inc. (BorgWarner Incorporated)
• Inventors: Gerig, Michael L.
• Primary Examiner(s): Dang, Khanh
• Assistant Examiner(s): DALEY, CHRISTOPHER ANTHONY
• Application Number:
  US11/098,143
• Publication Number:
  US 20050251604A1
• Time in Patent Office: 1,482 Days
• Field of Search: 710/120, 710/105, 709/230, 709/228, 708/228
• US Class Current: 710/105
• CPC Class Codes: H04L 12/4625 Single bridge functionality, e.g. connection of two networks over a single bridge
• CPC Class Codes: H04L 12/66 Arrangements for connecting between networks having differing types of switching systems, e.g. gateways
• CPC Class Codes: H04L 2012/40215 Controller Area Network CAN
• CPC Class Codes: H04L 2012/40273 the transportation system being a vehicle
• 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 69/18 Multiprotocol handlers, e.g. single devices capable of handling multiple protocols
• CPC Class Codes: H04L 69/32 Architecture of open systems interconnection [OSI] 7-layer type protocol stacks, e.g. the interfaces between the data link level and the physical level
• CPC Class Codes: H04L 69/326 in the transport layer [OSI layer 4] H04L69/16 takes precedence

Abstract

The present invention includes a network having a plurality of communication buses, at least two of the plurality of buses utilizing different communication bus protocols; a plurality of computer devices, at least one of the plurality of computer devices coupled to at least one of the plurality of communication buses and containing computer device software having an architecture including bus communication software for communicating with at least one of the plurality of communication buses; and an abstraction layer in communication with the bus communication software and capable of abstracting messages from the communication bus protocols, the plurality of computer devices including at least one gateway computer device coupled to multiple of the plurality of communication buses and containing computer device software having an architecture further including a gateway in communication with the abstraction layer and capable of routing the abstracted messages between computer devices coupled to the multiple communication buses to which the at least one gateway computer device is coupled.

Claims

1. In a network including multiple computer devices coupled to at least one communication bus utilizing a communication bus protocol, a computer device comprising:

at least one hardware circuitry connected to the at least one communication bus; and

at least one microprocessor connected to said at least one hardware circuitry, said at least one microprocessor containing software having an architecture including;

communication software capable of communicating with the at least one communication bus; and

an abstraction layer in communication with said communication software, said abstraction layer capable of abstracting a message from the communication bus protocol, wherein said abstraction layer implements a protocol that enables at least one layer above said abstraction layer to be defined without regard to underlying layer implementations, such that said message is communicated over said at least one communication bus implementing any of a plurality of communication bus protocols.

2. The computer device of claim 1 further including a second microprocessor connected to said at least one microprocessor, said second microprocessor containing software having said architecture.

3. The computer device of claim 2 wherein said second microprocessor is connected to a second hardware circuitry.

4. The computer device of claim 1 wherein said at least one microprocessor contains software having said architecture including a gateway in one of direct and indirect communication with said abstraction layer and capable of routing the abstracted message.

5. The computer device of claim 4 wherein said at least one microprocessor contains software having said architecture including said gateway, wherein said gateway uses a self-discovery protocol to gather data descriptive of the network'"'"'s layout.

6. The computer device of claim 4 wherein said at least one microprocessor contains software having said architecture further including at least one application program in communication with said gateway.

7. The computer device of claim 6 wherein said at least one microprocessor includes memory containing software having said architecture including said at least one application program, wherein said at least one application program is in indirect communication with said abstraction layer.

8. The computer device of claim 1 wherein said at least one microprocessor contains software having said architecture include communication software having a driver for controlling said at least one hardware circuitry.

9. The computer device of claim 5 wherein said at least one microprocessor contains software having said architecture including said communication software having a handler in communication with said driver.

10. The computer device of claim 1 wherein said at least one microprocessor contains software having said architecture including said abstraction layer, wherein said abstraction layer includes a router.

11. In a network including a plurality of nodes between which at least one message may be communicated, a method of enabling the nodes to resolve the message, the message including a message set ID and a message ID, said method comprising the steps of:

looking up the message set ID in a message set ID mapping, which maps at least one message set ID to a message set definition for each node, to obtain the message set definition;

looking up the message ID in a message ID mapping, which maps at least one message ID to a message definition, to obtain the message definition; and

using the message definition to interpret the message.

12. The method of claim 11 further including a step of storing the message set ID mapping and the message ID mapping in a database.

13. The method of claim 12 further including a step of extracting the message set ID mapping and the message ID mapping from the database to a configurable node, wherein the message set ID and the message ID mappings are used to configure the configurable node such that the configurable node may use the message set ID mapping and the message ID mapping in communicating with a specific node in the network.

14. The method of claim 11 further comprising a step of downloading the message set ID mapping and the message ID mapping from at least one node to a configurable node, wherein the message set ID mapping and the message ID mapping are used to configure the configurable node, thereby enabling the configurable node to communicate with a specific node in the network.

15. A network comprising:

at least one communication bus utilizing one communication bus protocol of a plurality of communication bus protocols; and

a plurality of computer devices coupled to said at least one communication bus, at least one of said plurality of computer devices containing computer device software having an architecture including;

communication software for communicating with said at least one communication bus; and

an abstraction layer in communication with said communication software and capable of abstracting a message from the communication bus protocol, wherein said abstraction layer implements a protocol that enables at least one layer above said abstraction layer to be defined without regard to underlying layer implementations, such that said message is communicated over said at least one communication bus implementing any of a plurality of communication bus protocols.

16. The network of claim 15 wherein at least one of said plurality of computer devices contains computer device software having an architecture including a gateway in one of direct and indirect communication with the abstraction layer and capable of routing the abstracted message.

17. The network of claim 16 wherein at least one of said plurality of computer devices contain computer device software having the architecture including a router in communication with the abstraction layer and the gateway.

18. The network of claim 16 wherein at least one of said plurality of computer devices contain computer device software having the architecture including the gateway, wherein the gateway uses a self-discovery protocol to gather data descriptive of the network'"'"'s layout.

19. The network of claim 15 wherein at least one of said plurality of computer devices contain computer device software having the architecture including the abstraction layer, wherein the abstracting layer is capable of abstracting the message, the message having a message set ID and a message ID.

20. The network of claim 19 wherein at least one of said plurality of computer devices contain computer device software including a message set ID mapping, which maps at least one message set ID to a message set definition for that computer device, and a message ID mapping for each message set definition, which maps at least one message ID to a message definition.

21. The network of claim 20 wherein at least one of said plurality of computer devices resolves the abstracted message by carrying out the steps of:

looking up the message set ID in the message set ID mapping to obtain the message set definition

looking up the message ID in the message ID mapping to obtain the message definition; and

using the message definition to interpret the abstracted message.

22. A network comprising:

a plurality of communication buses, at least two of the plurality of buses utilizing different communication bus protocols;

a plurality of computer devices, at least one of said plurality of computer devices coupled to at least one of said plurality of communication buses and containing computer device software having an architecture including;

bus communication software for communicating with at least one of said plurality of communication buses; and

an abstraction layer in communication with said bus communication software and capable of abstracting messages from the communication bus protocols, said plurality of computer devices including at least one gateway computer device coupled to multiple ones of said plurality of communication buses and containing computer device software having an architecture further including a gateway in communication with the abstraction layer and capable of routing the abstracted messages between computer devices coupled to the multiple communication buses to which the gateway computer device is coupled.

23. The network of claim 22 wherein at least one of said plurality of computer devices contain computer device software having the architecture including a router in communication with the abstraction layer and the gateway.

24. The network of claim 23 wherein at least one of said plurality of computer devices contain computer device software having the architecture including the gateway, wherein the gateway uses a self-discovery protocol to gather data descriptive of the network'"'"'s layout.

25. The network of claim 23 wherein at least one of said plurality of computer devices contain computer device software having the architecture including the abstraction layer, wherein the abstraction layer is capable of abstracting the message from the communication bus protocols, the message having a message set ID and a message ID.

26. The network of claim 25 wherein at least one of said plurality of computer devices contain computer device software including a message set ID mapping, which maps at least one message set ID to a message set definition for that computer device, and a message ID mapping for each message set definition, which maps at least one message ID to a message definition.

27. The network of claim 26 wherein at least one of said plurality of computer devices resolves the abstracted message by carrying out the steps of:

looking up the message set ID in the message set ID mapping to obtain the message set definition;

looking up the message ID in the message ID mapping to obtain the message definition; and

using the message definition to interpret the abstracted message.

28. The network of claim 22, wherein said abstraction layer implements a protocol that enables at least one layer above said abstraction layer to be defined without regard to underlying layer implementations, such that said message is communicated over said at least one communication bus implementing any of a plurality of communication bus protocols.

29. In a network including multiple computer devices coupled to at least one communication bus utilizing a communication bus protocol, a computer device comprising:

at least one hardware circuitry connected to the at least one communication bus; and

multiple microprocessors connected to said at least one hardware circuitry and containing software having an architecture including;

communication software capable of communicating with the at least one communication bus; and

an abstraction layer in communication with said communication software, said abstraction layer capable of abstracting a message from the communication bus protocol, wherein said abstraction layer implements a protocol that enables at least one layer above said abstraction layer to be defined without regard to underlying layer implementations, such that said message is communicated over said at least one communication bus implementing any of a plurality of communication bus protocols.

30. The computer device of claim 29 wherein the gateway uses a self-discovery protocol to gather data descriptive of the network'"'"'s layout.

31. The computer device of claim 29 wherein the abstraction layer is capable of abstracting the message from the communication bus protocols, the message having a message set ID and a message ID.

32. The computer device of claim 31 wherein said computer device contains computer device software including a message set ID mapping, which maps at least one message set ID to a message set definition for that computer device, and a message ID mapping for each message set definition, which maps at least one message ID to a message definition.

33. The computer device of claim 32 wherein said computer device resolves the abstracted message by carrying out the steps of:

looking up the message set ID in the message set ID mapping to obtain the message set definition

looking up the message ID in the message ID mapping to obtain the message definition; and

using the message definition to interpret the abstracted message.

34. A method of communicating a message over a network, said method comprising the steps of:

providing at least one communication bus having a plurality of layers;

supporting transport layer functions on a transport layer of said plurality of layers, wherein said transport layer functions are compatible with a communication bus protocol of said at least one communication bus over which a message is communicated; and

abstracting said message from said communication bus protocol by an abstraction layer of said plurality of layers in communication with the transport layer, wherein said abstraction layer implements a protocol that enables said layers above said abstraction layer to be defined without regard to underlying layer implementations, such that said message is communicated over said at least one communication bus implementing any of a plurality of communication bus protocols.

35. The method of claim 34 further comprising the step of providing a lower portion in communication with said transparent layer, and supporting at least one of a physical layer function, a data link layer function, and a network layer function.

36. The method of claim 34 further comprising the step of providing a first upper portion in communication with said abstraction layer, and a second upper portion in communication with said transport layer, wherein said first and second upper portions support at least one of a session layer function, a presentation layer function, and an application layer function.

37. The method of claim 34, wherein said abstraction layer comprises a header.

38. The method of claim 37, wherein said header comprises packetization bits.

39. The method of claim 38, wherein said packetization bits include at least one of stage bits and counter bits.

40. The method of claim 37 further comprising the step of identifying said abstracted message by a message identifier included in said header.

41. The method of claim 40 further comprising the step of identifying a message set to which said abstracted message belongs by a message set identifier included in said message identifier.

42. The method of claim 41 further comprising the step of identifying said abstracted message within said message set by a sub-identifier included in said message identifier.

43. The method of claim 37, wherein said abstraction layer further comprises a payload field for transporting said abstracted message therein.

44. The method of claim 34 further comprising the step of providing a gateway portion in communication with said abstraction layer.

45. The method of claim 44 further comprising the step of providing a self-discovery portion in communication with said gateway portion, wherein said self-discovery portion gathers data descriptive of a network'"'"'s layout.

46. A method of communicating a message, said method comprising the steps of:

providing a network comprising multiple computer devices coupled to at least one communication bus;

communicating a message over said at least one communication bus utilizing one of a plurality of communication bus protocols; and

abstracting said message from said communication bus protocol by an abstraction layer of said communication bus, wherein said abstraction layer implements a protocol that enables at least one layer of said communication bus above said abstraction layer to be defined without regard to layers of said communication bus that underlie said abstraction layer, such that said message is communicated over said communication bus implementing any of said plurality of communication bus protocols.

47. The method of claim 46 further comprising the step of communicating one of directly or indirectly between a gateway and said abstraction layer, wherein said gateway routes said abstracted message.

48. The method of claim 47 further comprising the step of providing a router in communication with said abstraction layer and said gateway.

49. The method of claim 47 further comprising the step of gathering data descriptive of said network'"'"'s layout using a self-discovery protocol of said gateway.

50. The method of claim 47 further comprising the step of providing at least one application program in communication with said gateway.

51. The method of claim 50, wherein said at least one application program is in communication with a router.

52. The method of claim 46 further comprising the step of controlling circuitry by at least one driver that provides an interface to said at least one communication bus.

53. The method of claim 52 further comprising the step of providing at least one handler in communication with said at least one driver.

54. The method of claim 47 further comprising the step of defining said at least one layer of said communication bus above said abstraction layer to be defined without regard and in regard to layers of said communication bus that underlie said abstraction layer, such that said at least one layer of said communication bus above said abstraction layer communicates said message that is abstracted by said abstraction layer and a second message that is communicated in one of said plurality of protocols specific to said communication bus.