Hybrid intra-vehicle communication network

Patent metadata

Field	Value
Publication number	US-10284387-B2
Application number	US-201615165632-A
Country	US
Kind code	B2
Filing date	May 26, 2016
Priority date	May 29, 2015
Publication date	May 7, 2019
Grant date	May 7, 2019

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.

First claim

What is claimed is:

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 wa

Assignees

• Gm Global Tech Operations Llc

Inventors

• Talty Timothy J
• Lin Jiun-Ren
• Tonguz Ozan
• Shan Dan

Classifications

• H04W4/48

  for in-vehicle communication · CPC title

• H04L69/28

  Timers or timing mechanisms used in protocols · CPC title

• H04L67/12

  specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks · CPC title

• H04L2012/40273

  the transportation system being a vehicle · CPC title

• H04W4/12

  Messaging; Mailboxes; Announcements · CPC title