Vehicle positioning using V2X RSU messaging and vehicular sensors

1. A vehicle for performing vehicle positioning, comprising:

a transceiver;

sensors; and

an onboard unit (OBU), programmed perform a position enhancement including to

track a first heading of a vehicle received via a global navigation satellite system (GNSS);

receive, via the transceiver, vehicle-to-everything (V2X) messages from a roadside unit (RSU), the V2X messages indicating a location of the RSU,

track a second heading of the vehicle according to the V2X messages;

perform a heading match between the first heading and the second heading; and

triggering performing the position enhancement to determine a corrected current position of the vehicle responsive to the headings differing by at least a threshold amount, the position enhancement including to:

utilize the sensors to capture sensor data of the RSU, and

update a current position of the vehicle to be the corrected current position of the vehicle based on the RSU as shown in the sensor data and the location of the RSU indicated in the V2X messages.

2. The vehicle of claim 1 , wherein the sensors include image sensors, and the sensor data includes image data.

3. The vehicle of claim 1 , wherein the sensors include LIDAR sensors, and the sensor data includes LIDAR data.

4. The vehicle of claim 1 , wherein the OBU is further programmed to:

determine an offset between the current position of the vehicle and a position of the vehicle indicated by the V2X messages and sensor data; and

utilize the offset to adjust the current position of the vehicle to the corrected current position of the vehicle responsive to the corrected current position being within a threshold confidence.

5. The vehicle of claim 1 , wherein the OBU is further programmed to trigger the position enhancement responsive to the OBU detecting sensor occlusion based on data received from the sensors.

6. The vehicle of claim 1 , wherein the OBU is further programmed to:

maintain a position history of the vehicle; and

trigger the position enhancement responsive to the current position of the vehicle failing to match the position history of the vehicle.

7. The vehicle of claim 1 , wherein the OBU is further programmed to send V2X messages using the transceiver, the sent V2X messages including the corrected current position of the vehicle.

8. A method for performing vehicle heading analysis and position enhancement for vehicle positioning, comprising:

tracking a first heading of a vehicle received via a global navigation satellite system (GNSS);

receiving, to an onboard unit (OBU) of a vehicle via a transceiver of the vehicle, vehicle-to-everything (V2X) messages from a roadside unit (RSU), the V2X messages indicating a location of the RSU;

tracking a second heading of the vehicle according to the V2X messages;

performing a heading match between the first heading and the second heading; and

triggering performing position enhancement to determine the corrected current position of the vehicle responsive to the headings differing by at least a threshold amount, the position enhancement including:

utilizing sensors of the vehicle to capture sensor data of the RSU; and

updating a current position of the vehicle to a corrected current position of the vehicle based on the RSU as shown in the sensor data and the location of the RSU indicated in the V2X messages.

9. The method of claim 8 , further comprising:

determining an offset between the current position of the vehicle and a position of the vehicle indicated by the V2X messages and sensor data; and

utilizing the offset to adjust the current position of the vehicle to the corrected current position of the vehicle responsive to the corrected current position being within a threshold confidence.

10. The method of claim 9 , wherein the threshold confidence includes confirming that the corrected current position is along a roadway as defined by map data included in the V2X messages.

11. The method of claim 8 , further comprising triggering the position enhancement responsive to the OBU detecting sensor occlusion based on data received from the sensors.

12. The method of claim 8 , further comprising:

maintaining a position history of the vehicle; and

triggering the position enhancement responsive to the current position of the vehicle failing to match the position history of the vehicle.

13. The method of claim 8 , further comprising sending V2X messages using the transceiver, the sent V2X messages including the corrected current position of the vehicle.

14. A non-transitory computer-readable medium comprising instructions for performing position enhancement for vehicle positioning, that, when executed by a processor of an onboard unit (OBU) of a vehicle cause the OBU to perform operations comprising to:

track a first heading of a vehicle received via a global navigation satellite system (GNSS);

receive, to the OBU via a transceiver of the vehicle, vehicle-to-everything (V2X) messages from a roadside unit (RSU), the V2X messages indicating a location of the RSU;

track a second heading of the vehicle according to the V2X messages;

perform a heading match between the first heading and the second heading; and

trigger performing position enhancement to determine the corrected current position of the vehicle responsive to the headings differing by at least a threshold amount, the position enhancement including to:

utilize image sensors of the vehicle to capture sensor data of the RSU;

determine a current position of the vehicle to a corrected current position of the vehicle based on the RSU as shown in the sensor data and the location of the RSU indicated in the V2X messages;

confirm that the corrected current position is along a roadway as defined by map data included in the V2X messages; and

update the current position to be the corrected current position responsive to the corrected current position being along the roadway.

15. The medium of claim 14 , further comprising instructions that when executed by the OBU, cause the OBU to perform operations comprising to:

determine an offset between the current position of the vehicle and a position of the vehicle indicated by the V2X messages and sensor data; and

utilize the offset to adjust the current position of the vehicle to the corrected current position of the vehicle responsive to the corrected current position being within a threshold confidence.

16. The medium of claim 14 , further comprising instructions that when executed by the OBU, cause the OBU to perform operations comprising to trigger the position enhancement responsive to the OBU detecting sensor occlusion based on data received from the image sensors.

17. The medium of claim 14 , further comprising instructions that when executed by the OBU, cause the OBU to perform operations comprising to:

maintain a position history of the vehicle; and

trigger the position enhancement responsive to the current position of the vehicle failing to match the position history of the vehicle.

18. The medium of claim 14 , further comprising instructions that when executed by the OBU, cause the OBU to perform operations comprising to send V2X messages using the transceiver, the sent V2X messages including the corrected current position of the vehicle.