Hybrid intra-vehicle communication network

• US 10,284,387 B2
• Filed: 05/26/2016
• Issued: 05/07/2019
• Est. Priority Date: 05/29/2015
• Status: Active Grant

• Current Assignee: Carnegie Mellon University, GM Global Technology Operations LLC (General Motors Company)
• Original Assignee: GM Global Technology Operations LLC (General Motors Company)
• Inventors: Talty, Timothy J., Lin, Jiun-Ren, Tonguz, Ozan, Shan, Dan
• Primary Examiner(s): Beharry, Noel R
• Assistant Examiner(s): Mak, Rodrick
• Application Number:
  US15/165,632
• Publication Number:
  US 20160352533A1
• Time in Patent Office: 1,076 Days
• Field of Search: None
• CPC Class Codes: H04L 12/4015 by scheduling the transmission of messages at the communication node
• 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 43/0805 by checking availability
• 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 69/28 Timers or timing mechanisms used in protocols
• CPC Class Codes: H04W 4/12 Messaging; Mailboxes; Announcements
• CPC Class Codes: H04W 4/40 for vehicles, e.g. vehicle-to-pedestrians [V2P]
• CPC Class Codes: H04W 4/48 for in-vehicle communication

Abstract

Technical solutions are described for facilitating intra-vehicle wireless communication among a plurality of electronic control units. An example method includes determining, by a first electronic control unit in a vehicle, a wait-time for a message, which is to be transmitted to a second electronic control unit in the vehicle via a wireless channel. The first electronic control unit executes a first availability-check, by determining availability of the wireless channel. In response to the first availability-check indicating that the wireless communication channel is available, the method includes delaying transmission of the message by the wait-time. The method also includes executing, by the first electronic control unit, after passage of the wait-time, a second availability-check. In response to the second availability-check indicating that the wireless communication channel is still available, the method includes transmitting the message for receipt by the second electronic control unit.

Claims

1. A computer-implemented method for facilitating intra-vehicle wireless communication among a plurality of electronic control units, the method comprising:

determining, by a first electronic control unit in a vehicle, a wait-time for a message, which is to be transmitted to a second electronic control unit in the vehicle via a wireless communication channel;

executing, by the first electronic control unit, a first availability-check, which comprises determining availability of the wireless communication channel;

after completion of the first availability-check, determining, based on the first availability-check, that the wireless communication channel is available;

delaying transmission of the message by the wait-time;

after passage of the wait-time, executing, by the first electronic control unit, a second availability-check to determine the availability of the wireless communication channel;

determining, based on the second availability-check, that the wireless communication channel is still available; and

performing the intra-vehicle wireless communication by transmitting the message from the first electronic control unit in the vehicle to the second electronic control unit in the vehicle,

wherein the vehicle comprises a plurality of electronic control units, the first electronic control unit in the vehicle and the second electronic control unit being among the plurality of electronic control units, wherein each of the plurality of electronic control units is assigned a unique sequence number that is an integer ranging from 1 to N_e where N_e represents a total number of the plurality of electronic control units, and wherein the unique sequence number is assigned based on a role of the respective electronic control unit of the plurality of electronic control units, and

wherein the wait-time is based on a priority-value of the message, and wherein the priority value of the message is based on the unique sequence number of the first electronic control unit and the unique sequence number of the second electronic control unit.

2. The computer-implemented method of claim 1, wherein the method further comprises, in response to the second availability-check indicating that the wireless communication channel is unavailable, incrementing a loop-counter and reporting the loop-counter to a vehicle communication unit of the first electronic control unit.

3. The computer-implemented method of claim 2, wherein the method further comprises, generating, by the vehicle communication unit, an instruction to change the wait-time of the message in response to the loop-counter crossing a predetermined threshold.

4. The computer-implemented method of claim 1, wherein the method further comprises:

in response to the first availability-check indicating that the wireless communication channel is unavailable, incrementing a first loop-counter and reporting the first loop-counter to a vehicle communication unit of the first electronic control unit; and

in response to the second availability-check indicating that the wireless communication channel is unavailable, incrementing a second loop-counter and reporting the second loop-counter to the vehicle communication unit of the first electronic control unit.

5. The computer-implemented method of claim 4, wherein the method further comprises, generating, by the vehicle communication unit, an instruction to change the wait-time of the message in response to the first loop-counter crossing a first predetermined threshold and the second loop-counter crossing a second predetermined threshold.

6. A first electronic control unit of a vehicle comprising:

a memory;

a wireless communication interface; and

a processor coupled with the memory and the wireless communication interface, the processor configured to;

determine a wait-time for a message, which is to be transmitted to a second electronic control unit in the vehicle via a wireless communication channel using the wireless communication interface;

execute a first availability-check, which comprises determining availability of the wireless communication channel;

after completion of the first availability-check, determine, based on the first availability-check, that the wireless communication channel is available;

delay transmission of the message by the wait-time;

after passage of the wait-time, execute a second availability-check to determine the availability of the wireless communication channel; and

determine, based on the second availability-check, that the wireless communication channel is still available, and transmit the message for receipt by the second electronic control unit,

wherein the vehicle comprises a plurality of electronic control units, the first electronic control unit in the vehicle and the second electronic control unit being among the plurality of electronic control units, wherein each of the plurality of electronic control units is assigned a unique sequence number that is an integer ranging from 1 to N_e where N_e represents a total number of the plurality of electronic control units, and wherein the unique sequence number is assigned based on a role of the respective electronic control unit of the plurality of electronic control units, and

wherein the wait-time is based on a priority-value of the message, and wherein the priority value of the message is based on the unique sequence number of the first electronic control unit and the unique sequence number of the second electronic control unit.

7. The electronic control unit of claim 6, further comprising a vehicle communication unit, and wherein the processor is further configured to, in response to the second availability-check indicating that the wireless communication channel is unavailable, increment a loop-counter and report the loop-counter to the vehicle communication unit.

8. The electronic control unit of claim 7, wherein the processor is further configured to generate an instruction to change the wait-time of the message in response to the loop-counter crossing a predetermined threshold.

9. The electronic control unit of claim 6, further comprising a vehicle communication unit, and wherein the processor is further configured to:

in response to the first availability-check indicating that the wireless communication channel is unavailable, increment a first loop-counter and report the first loop-counter to the vehicle communication unit; and

in response to the second availability-check indicating that the wireless communication channel is unavailable, increment a second loop-counter and report the second loop-counter to the vehicle communication unit.

10. The electronic control unit of claim 9, wherein the processor is further configured to generate an instruction to change the wait-time of the message in response to the first loop-counter crossing a first predetermined threshold and the second loop-counter crossing a second predetermined threshold.

11. A computer program product for facilitating intra-vehicle wireless communication among a plurality of electronic control units in a vehicle, the computer program product comprising a non-transitory computer-readable memory, and the computer-readable memory including instructions to:

determine a wait-time for a message, which is to be transmitted to a second electronic control unit in the vehicle via a wireless communication channel;

execute a first availability-check, which comprises determining availability of the wireless communication channel;

after completion of the first availability-check, determine, based on the first availability-check, that the wireless communication channel is available;

delay transmission of the message by the wait-time;

after passage of the wait-time, execute a second availability-check to determine the availability of the wireless communication channel;

determine, based on the second availability-check, that the wireless communication channel is still available; and

performing the intra-vehicle wireless communication by transmitting the message from a first electronic control unit in the vehicle to the second electronic control unit in the vehicle,

wherein the vehicle comprises a plurality of electronic control units, the first electronic control unit in the vehicle and the second electronic control unit being among the plurality of electronic control units, wherein each of the plurality of electronic control units is assigned a unique sequence number that is an integer ranging from 1 to N_e where N_e represents a total number of the plurality of electronic control units, and wherein the unique sequence number is assigned based on a role of the respective electronic control unit of the plurality of electronic control units, and

wherein the wait-time is based on a priority-value of the message, and wherein the priority value of the message is based on the unique sequence number of the first electronic control unit and the unique sequence number of the second electronic control unit.

12. The computer program product of claim 11, wherein the computer-readable memory further comprises instructions to in response to the second availability-check indicating that the wireless communication channel is unavailable, increment a loop-counter and report the loop-counter to a vehicle communication unit.

13. The computer program product of claim 12, wherein the computer-readable memory further comprises instructions to change the wait-time of the message in response to the loop-counter crossing a predetermined threshold.

14. The computer program product of claim 11, wherein the computer-readable memory further comprises instructions to:

in response to the first availability-check indicating that the wireless communication channel is unavailable, increment a first loop-counter and report the first loop-counter to a vehicle communication unit; and

in response to the second availability-check indicating that the wireless communication channel is unavailable, increment a second loop-counter and report the second loop-counter to the vehicle communication unit.

15. The computer program product of claim 14, wherein the computer-readable memory further comprises instructions to change the wait-time of the message in response to the first loop-counter crossing a first predetermined threshold and the second loop-counter crossing a second predetermined threshold.