SYNCHRONIZED RADIO TRANSMISSION FOR VEHICLE PLATOONING

• US 20180084511A1
• Filed: 06/28/2017
• Published: 03/22/2018
• Est. Priority Date: 09/16/2016
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: WU, ZHIBIN, Patil, Shailesh, Gulati, Kapil, Nguyen, Tien Viet, Baghel, Sudhir Kumar, Li, Junyi, Jiang, Libin
• Granted Patent: US 10,849,081 B2
• Time in Patent Office: Days
• CPC Class Codes: G05D 1/0295 by at least one leading vehicle of the fleet
• CPC Class Codes: G08G 1/22 Platooning, i.e. convoy of communicating vehicles
• 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 4/46 for vehicle-to-vehicle communication [V2V]
• CPC Class Codes: H04W 56/001 Synchronization between nodes
• CPC Class Codes: H04W 72/044 based on the type of the allocated resource
• CPC Class Codes: H04W 72/20 Control channels or signalling for resource management
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 72/52 based on load

Abstract

Wireless communications systems and methods related to transmission of platoon information. A first vehicle in a vehicle platoon obtains a first radio resource spanning a frequency channel and a time period for synchronous transmission with at least a second vehicle in the vehicle platoon. The first vehicle transmits, synchronously with at least the second vehicle, information associated with the vehicle platoon in the frequency channel and the time period of the first radio resource. The first vehicle may obtain the first radio resource by requesting a transmission request from a wireless communication device and receiving a transmission grant indicating the first radio resource. Alternatively, the first vehicle may obtain the first radio resource by selecting the first radio resource based on at least one of a sensing report or a resource reservation received from the second vehicle.

Claims

1. A method of wireless communication for vehicle platooning, comprising:

obtaining, by a first vehicle in a vehicle platoon, a first radio resource spanning a frequency channel and a time period for synchronous transmission with at least a second vehicle in the vehicle platoon; and

transmitting, by the first vehicle synchronously with at least the second vehicle, information associated with the vehicle platoon in the frequency channel and the time period of the first radio resource.

2. The method of claim 1, wherein the obtaining the first radio resource includes:

transmitting, to a wireless communication device, a transmission request for the synchronous transmission; and

receiving, from the wireless communication device, a transmission grant indicating the first radio resource.

3. The method of claim 2, wherein the transmission grant further indicates a semi-persistent schedule for the first radio resource.

4. The method of claim 1, wherein the obtaining the first radio resource includes:

receiving, from a wireless communication device, resource allocation information indicating a plurality of radio resources reserved for vehicle platooning transmissions; and

selecting the first radio resource from the plurality of radio resources.

5. The method of claim 1, wherein the obtaining the first radio resource includes identifying the first radio resource from a plurality of radio resources based on at least a pseudo-random sequence.

6. The method of claim 1, further comprising receiving, by the first vehicle from the second vehicle, a sensing report including channel loading information associated with the second vehicle, wherein the obtaining the first radio resource includes selecting the first radio resource based on at least the sensing report.

7. The method of claim 1, further comprising transmitting, by the first vehicle to the second vehicle, a transmission grant indicating the first radio resource.

8. The method of claim 1, wherein the obtaining the first radio resource includes receiving, from the second vehicle, a first transmission grant indicating the first radio resource.

9. The method of claim 1, wherein the transmitting the information includes transmitting, by the first vehicle synchronously with the second vehicle, an identical encoded signal carrying identical information on the first radio resource.

10. A method of wireless communication for vehicle platooning, comprising:

receiving, by a wireless communication device from a vehicle in a vehicle platoon, a transmission request for synchronous transmission by the vehicle platoon; and

transmitting, by the wireless communication device to the vehicle, resource allocation information indicating at least one radio resource having a frequency channel and a time period for the synchronous transmission by the vehicle platoon of information associated with the vehicle platoon.

11. The method of claim 10, further comprising identifying the at least one radio resource from a dedicated resource for the synchronous transmission.

12. The method of claim 10, further comprising configuring the resource allocation information to indicate a semi-persistent schedule for the synchronous transmission.

13. The method of claim 10, further comprising configuring the resource allocation information to indicate a pool of radio resources reserved for any vehicle platooning transmission.

14. The method of claim 10, wherein the vehicle is a leading vehicle of the vehicle platoon.

15. The method of claim 10, further comprising transmitting, by the wireless communication device to at least one other vehicle in the vehicle platoon, the resource allocation information.

16. An apparatus associated with a first vehicle in a vehicle platoon, comprising:

a processor configured to obtain a first radio resource spanning a frequency channel and a time period for synchronous transmission with at least a second vehicle in the vehicle platoon; and

a transmitter configured to transmit, synchronously with at least the second vehicle, information associated with the vehicle platoon in the frequency channel and the time period of the first radio resource.

17. The apparatus of claim 16, further comprising a receiver, wherein the processor is further configured to obtain the first radio resource by:

transmitting, via the transmitter to a wireless communication device, a transmission request for the synchronous transmission; and

receiving, via the receiver from the wireless communication device, a transmission grant indicating the first radio resource.

18. The apparatus of claim 17, wherein the transmission grant further indicates a semi-persistent schedule for the first radio resource.

19. The apparatus of claim 16, further comprising a receiver, wherein the processor is further configured to obtain the first radio resource by:

receiving, via the receiver from a wireless communication device, resource allocation information indicating a plurality of radio resources reserved for vehicle platooning transmissions; and

selecting the first radio resource from the plurality of radio resources.

20. The apparatus of claim 16, wherein the processor is further configured to obtain the first radio resource by identifying the first radio resource from a plurality of radio resources based on at least a pseudo-random sequence.

21. The apparatus of claim 16, further comprising a receiver configured to receive, from the second vehicle, a sensing report including channel loading information associated with the second vehicle, wherein the processor is further configured to obtain the first radio resource by selecting the first radio resource based on at least the sensing report.

22. The apparatus of claim 16, wherein the transmitter is further configured to transmit, to the second vehicle, a transmission grant indicating the first radio resource.

23. The apparatus of claim 16, further comprising a receiver, wherein the processor is further configured to obtain the first radio resource by receiving, via the receiver, from the second vehicle, a first transmission grant indicating the first radio resource.

24. The apparatus of claim 16, wherein the transmitter is further configured to transmit the information by transmitting, synchronously with the second vehicle, an identical encoded signal carrying identical information on the first radio resource.

25. A wireless communication device, comprising:

a receiver configured to receive, from a vehicle in a vehicle platoon, a transmission request for synchronous transmission by the vehicle platoon; and

a transmitter configured to transmit, to the vehicle, resource allocation information indicating at least one radio resource having a frequency channel and a time period for the synchronous transmission by the vehicle platoon of information associated with the vehicle platoon.

26. The wireless communication device of claim 25, wherein the at least one radio resource is a dedicated resource for the synchronous transmission.

27. The wireless communication device of claim 25, wherein the resource allocation information further indicates a semi-persistent schedule for the synchronous transmission.

28. The wireless communication device of claim 25, wherein the resource allocation information further indicates a pool of radio resources reserved for any vehicle platooning transmission.

29. The wireless communication device of claim 25, wherein the vehicle is a leading vehicle of the vehicle platoon.

30. The wireless communication device of claim 25, wherein the transmitter is further configured to transmit, to at least one other vehicle in the vehicle platoon, the resource allocation information.