VEHICLE MESSAGING

• US 20160212601A1
• Filed: 08/07/2014
• Published: 07/21/2016
• Est. Priority Date: 09/25/2013
• Status: Active Grant

• Current Assignee: Alcatel-Lucent SA (Nokia Corporation)
• Original Assignee: Alcatel-Lucent SA (Nokia Corporation)
• Inventors: Fonseca Dos Santos, Andre, Braun, Volker, Doetsch, Uwe
• Granted Patent: US 9,980,107 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G08G 1/091 Traffic information broadcasting broadcasting communication H04H
• CPC Class Codes: G08G 1/162 event-triggered
• CPC Class Codes: G08G 1/164 Centralised systems, e.g. external to vehicles
• CPC Class Codes: H04W 12/069 using certificates or pre-shared keys
• CPC Class Codes: H04W 4/027 using movement velocity, acceleration information
• CPC Class Codes: H04W 4/20 Services signaling; Auxiliary data signalling, i.e. transmitting data via a non-traffic channel
• CPC Class Codes: H04W 4/46 for vehicle-to-vehicle communication [V2V]
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

A vehicle messaging transmission method, a vehicle messaging transmitter, a vehicle messaging reception method, a vehicle messaging receiver, an infrastructure node method, and infrastructure node and computer program products are disclosed. The vehicle messaging transmission method, comprises: detecting a vehicle event; and transmitting both a vehicle-to-vehicle message over a vehicle-to-vehicle radio link, the vehicle-to-vehicle message identifying the vehicle event and a vehicle-to-infrastructure message over a vehicle-to-infrastructure radio link, the vehicle-to-infrastructure message identifying the vehicle event. In this way, rather than periodically transmitting location messages, instead messages are only transmitted when a particular event occurs. This helps to reduce the volume of messages since the messages are only transmitted when an event occurs. Also transmitting a vehicle-to-vehicle message enables messages to be transmitted quickly, with reduced latency. Furthermore, because the messages are only sent when an event occurs, privacy and security concerns are reduced. As will be explained in more detail below, transmitting a vehicle-to-vehicle message enables other vehicles which receive the message to receive that message quickly and to respond rapidly to the event, whilst the vehicle-to-infrastructure message can be used to authenticate the validity of the vehicle-to-vehicle message and provide additional assurance to the receiving vehicle that the message is genuine.

Claims

1. A vehicle messaging reception method, comprising:

on receipt of a vehicle-to-vehicle message over a vehicle-to-vehicle radio link identifying a vehicle event, initiating a preparatory vehicle action; and

on receipt of an infrastructure-to-vehicle message over an infrastructure-to-vehicle radio link, said infrastructure-to-vehicle message identifying said vehicle event, initiating a vehicle action.

2. The method of claim 1, wherein said preparatory vehicle action prepares said vehicle to reduce a time taken to take said vehicle action.

3. The method of claim 2, comprising:

deriving timing information for decoding said vehicle-to-vehicle message from said infrastructure-to-vehicle radio link.

4. The method of claim 1, comprising:

on receipt of additional vehicle-to-vehicle messages, initiating additional preparatory vehicle actions.

5. The method of claim 4, comprising:

on receipt of a threshold number of additional vehicle-to-vehicle messages from different vehicles, initiating at least one of the vehicle action and the additional preparatory vehicle action.

6. The method of claim 4, comprising:

on receipt of a sequence of vehicle-to-vehicle messages, initiating at least one of the additional preparatory vehicle actions and the vehicle action.

7. The method of claim 1, comprising:

ceasing initiation of a preparatory vehicle action when no infrastructure-to-vehicle message is received within a time period.

8. The method of claim 1, wherein the vehicle action comprises an action to protect at least one of the vehicle and vehicle occupants.

9. The method of claim 1, wherein the infrastructure-to-vehicle message is received over the infrastructure-to-vehicle radio link from a cellular base station.

10. The method of claim 1, wherein the infrastructure-to-vehicle message comprises a cell broadcast message.

11. The method of claim 1, comprising:

estimating a relative velocity of a vehicle transmitting the vehicle-to-vehicle message by measuring a Doppler shift when receive the vehicle-to-vehicle message.

12. The method of claim 1, comprising:

receiving an indication of reserved resources.

14. A computer program product operable, when executed on a computer, to perform the method of claim 1.

13. A vehicle messaging reception apparatus, comprising:

reception logic operable, on receipt of a vehicle-to-vehicle message over a vehicle-to-vehicle radio link identifying a vehicle event, to initiate a preparatory vehicle action and, on receipt of an infrastructure-to-vehicle message over an infrastructure-to-vehicle radio link, said infrastructure-to-vehicle message identifying said vehicle event, to initiate a vehicle action.