Methods and systems for scheduling mmWave communications among connected vehicles

Patent metadata

Field	Value
Publication number	US-11706754-B2
Application number	US-202117235320-A
Country	US
Kind code	B2
Filing date	Apr 20, 2021
Priority date	Apr 20, 2021
Publication date	Jul 18, 2023
Grant date	Jul 18, 2023

Abstract

A vehicle includes a processor configured to transmit a mmWave beacon signal during a probe phase of a first period; receive one or more mmWave beacon signals from one or more vehicles; generate a mmWave communication intention message for another period that is after the first period based on the received one or more mmWave beacon signals; and broadcast, during the first period, a packet including a mmWave transmission schedule for the another period generated based on the mmWave communication intention message.

First claim

What is claimed is:

1. A vehicle comprising:
a processor configured to:
transmit a mmWave beacon signal during a probe phase of a first period;
receive one or more mmWave beacon signals from one or more vehicles;
generate a mmWave communication intention message for another period that is after the first period based on the received one or more mmWave beacon signals, the mmWave communication intention message indicating that the vehicle intends to communicate with one of the one or more vehicles over mmWave during the another period; and
broadcast, during the first period, a packet including a mmWave transmission schedule for the another period generated based on the mmWave communication intention message.

2. The vehicle of claim 1 , wherein the processor is configured to:
receive one or more mmWave communication intention messages for the another period from other vehicles; and
generate the mmWave transmission schedule for the another period based on the mmWave communication intention message and the one or more mmWave communication intention messages.

3. The vehicle of claim 1 , wherein the processor is configured to:
generate the mmWave communication intention message for the another period further based on locations of the one or more vehicles.

4. The vehicle of claim 1 , wherein the processor is configured to:
exchange data with another vehicle via mmWave communication during an exchange phase of the first period based on a mmWave transmission schedule for the first period.

5. The vehicle of claim 4 , wherein the mmWave transmission schedule for the first period is selected among a plurality of transmission schedules for the first period based on utility values of the plurality of transmission schedules.

6. The vehicle of claim 5 , wherein the plurality of transmission schedules were overheard by the vehicle during a period prior to the first period.

7. The vehicle of claim 1 , wherein the packet further includes the mmWave communication intention message for the another period.

8. The vehicle of claim 1 , wherein the packet further includes the mmWave transmission schedule for a second period that is after the first period and before the another period.

9. The vehicle of claim 8 , wherein the processor is configured to:
obtain one or more mmWave transmission schedules for the second period during a period prior to the first period; and
select, as the mmWave transmission schedule for the second period, one of the one or more mmWave transmission schedules based on utility values of the one or more mmWave transmission schedules.

10. The vehicle of claim 1 , wherein the packet is included in a basic safety message.

11. The vehicle of claim 1 , wherein the packet is broadcasted over a 5.9 GHz V2X channel.

12. A method for scheduling mmWave transmissions, the method comprising:
transmitting, by a host vehicle, a mmWave beacon signal during a probe phase of a first period;
receiving, by the host vehicle, one or more mmWave beacon signals from one or more vehicles;
generating, by the host vehicle, a mmWave communication intention message for another period that is after the first period based on the received one or more mmWave beacon signals, the mmWave communication intention message indicating that the vehicle intends to communicate with one of the one or more vehicles over mmWave during the another period; and
broadcasting, by the host vehicle, during the first period, a packet including a mmWave transmission schedule for the another period generated based on the mmWave communication intention message.

13. The method of claim 12 , further comprising:
receiving, by the host vehicle, one or more mmWave communication intention messages for the another period from other vehicles; and
generating, by the host vehicle, the mmWave transmission schedule for the another period based on the mmWave communication intention message and the one or more mmWave communication intention messages.

14. The method of claim 12 , further comprising:
generating, by the host vehicle, the mmWave communication intention message for the another period further based on locations of the one or more vehicles.

15. The method of claim 12 , further comprising:
exchanging, by the host vehicle, data with another vehicle via mmWave communication during an exchange phase of the first period based on a mmWave transmission schedule for the first period.

16. The method of claim 15 , wherein the mmWave transmission schedule for the first period is selected among a plurality of transmission schedules for the first period based on utility values of the plurality of transmission schedules.

17. The method of claim 16 , wherein the plurality of transmission schedules were overheard by the host vehicle during a period prior to the first period.

18. The method of claim 12 , wherein the packet further includes the mmWave communication intention message for the another period.

19. The method of claim 12 , wherein the packet further includes the mmWave transmission schedule for a second period that is after the first period and before the another period.

20. The method of claim 19 , further comprising:
overhearing, by the host vehicle, one or more mmWave transmission schedules for the second period transmitted by other vehicles during a period prior to the first period; and
selecting, by the host vehicle, as the mmWave transmission schedule for the second period, one of the one or more mmWave transmission schedules based on utility values of the one or more mmWave transmission schedules.

Assignees

• Toyota Eng & Mfg North America

Inventors

• Lu Hongsheng
• He Chenyuan
• Cheng Bin
• Shimizu Takayuki

Classifications

• H04W72/1263 Primary

  Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows · CPC title

• H04W4/40

  for vehicles, e.g. vehicle-to-pedestrians [V2P] · CPC title

• H04W72/02

  Selection of wireless resources by user or terminal · CPC title

• H04W72/0446

  Resources in time domain, e.g. slots or frames · CPC title

• H04W72/0453

  Resources in frequency domain, e.g. a carrier in FDMA · CPC title