METHOD AND DEVICE FOR VEHICLE-TO-VEHICLE COMMUNICATION

• US 20180324729A1
• Filed: 10/25/2016
• Published: 11/08/2018
• Est. Priority Date: 11/05/2015
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: HOU, Yanzhao, CUI, Qimei, ZHANG, Shiyu, CAO, Shiwei, LIANG, Hui, JIANG, Qinyan, GUO, Xin, SUN, Chen
• Granted Patent: US 10,667,225 B2
• Time in Patent Office: Days
• CPC Class Codes: H04L 65/40 Support for services or applications
• CPC Class Codes: H04W 4/40 for vehicles, e.g. vehicle-to-pedestrians [V2P]
• CPC Class Codes: H04W 56/0015 one node acting as a reference for the others
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 72/56 based on priority criteria

Abstract

A device and method for vehicle-to-vehicle communication. The method includes: a source device sends a request message to a base station, the request message being used for requesting the base station to allocating a resource; a node device that is synchronous with the source device sends synchronous information to at least one target device, so that the at least one target device establishes time synchronization with the source device according to the synchronous information, wherein the node device is a road-side device or an in-car device capable of communicating; the source device informs the at least one target device of a resource allocated by the base station; and the source device sends service information to the at least one target device by utilizing the resource.

Claims

1. A node device for vehicle-to-vehicle communication, comprising one or more processors configured to:

perform control, in response to road event-related information from a source device, to establish time synchronization with the source device; and

generate synchronization information for transmission to one or more target devices, so that the target devices establish time synchronization with the source device based on the synchronization information,

wherein the node device is a roadside unit or an onboard device capable of communication.

2. The node device according to claim 1, wherein the one or more processors are further configured to perform control to establish time synchronization with the source device according to a global synchronization signal source.

3. The node device according to claim 1, wherein the node device and the source device are registered with different operators, and the node device and the target device are registered with the same operator.

4. The node device according to claim 1, wherein the one or more processors are further configured to:

determine a priority of the road event based on the road event-related information; and

determine a transmission period for the synchronization information based on the priority,

wherein the higher the priority is, the shorter the transmission period is.

5. The node device according to claim 1, wherein a resource for transmitting the synchronization information is prescribed and indicated to the node device and the target devices in advance.

6. The node device according to claim 1, wherein the synchronization information is transmitted by using a dedicated signaling.

7. A method for performing synchronization in a vehicle-to-vehicle communication system, comprising:

establishing, by a node device, time synchronization with a source device, in response to road event-related information from the source device;

transmitting, by the node device, synchronization information to one or more target devices; and

establishing, by the target devices, time synchronization with the source device based on the received synchronization information,

wherein the node device is a roadside unit or an onboard device capable of communication.

8. The method according to claim 7, wherein the node device establishes time synchronization with the source device according to a global synchronization signal source.

9. The method according to claim 7, wherein the node device and the source device are registered with different operators, and the node device and the target devices are registered with the same operator.

10. The method according to claim 7, further comprising:

transmitting, by the source device, location information of the source device and the road event-related information to a serving base station of the source device;

informing, by the serving base station of the source device, one or more neighbor base stations of the location information and the road event-related information; and

selecting, by each of the serving base station and the one or more neighbor base stations, a communication device as the node device, and transmitting, by each of the serving base station and the one or more neighbor base stations, the road event-related information to the selected node device.

13. The method according to claim 7, further comprising:

establishing, by a specific target device among the one or more target devices, time synchronization with the source device based on synchronization information from another node device in a case where the specific target device is out of synchronization with the source device.

14. The method according to claim 7, further comprising:

determining, by the target device, whether to establish a new synchronization based on quality and transmission period of new synchronization information upon receipt of the new synchronization information.

11-12. -12. (canceled)

15. A device for vehicle-to-vehicle communication, comprising one or more processors configured to:

generate a request message for requesting a base station to allocate a resource;

perform control to establish time synchronization with a node device, such that at least one target devices establish time synchronization with the device based on synchronization information transmitted by the node device, wherein the node device is a roadside unit or an onboard device capable of communication;

generate a control message for informing the at least one target devices of the resource allocated by the base station; and

generate service information related to a service for transmission to the at least one target devices via the resource allocated by the base station.

16. The device according to claim 15, wherein the one or more processors are further configured to:

generate a first request message for transmission to the base station, wherein the first request message is used for requesting the base station to allocate a resource for transmitting a second request message; and

generate the second request message for transmission to the base station, wherein the second request message is used for requesting the base station to allocate a resource for transmitting the service information,

wherein the control information is used for informing the at least one target devices of the resource for transmitting the service information.

17. The device according to claim 16, wherein the one or more processors are further configured to generate the second request message in a specific format, in a case where the base station simultaneously allocates the resource for transmitting the second request message and the resource for transmitting the service information in response to the first request information.

18. The device according to claim 16, wherein at least one of a service identifier and a group index in the second request message is fixed.

19. The device according to claim 15, wherein the one or more processors are further configured to determine, when transmitting the service information related to the service, whether to request the base station to allocate a resource for transmitting service information related to a new service based on a priority of the new service.

20. The device according to claim 19, wherein the one or more processors are further configured to generate a request message for requesting the base station to allocate a resource, in a case where the priority of the new service is higher than the priority of the service and the resource which has been allocated by the base station is insufficient to transmit the service information related to the new service.

21. The device according to claim 15, wherein the one or more processors are further configured to perform control to establish time synchronization with the node device according to a global synchronization signal source.

23. The device according to claim 15, wherein the service information is road safety service information.

22. (canceled)

24-30. -30. (canceled)