Method and apparatus for context-based reliable V2X operation
Apparatus for V2X communications comprising an application layer configured to analyze a high-risk scenario involving a self-vehicle and other vehicles, an access or network layer configured to ensure reception of messages broadcast by the self-vehicle by requesting acknowledged only from vehicles identified as involved in the high-risk scenario, and an interface connecting the application layer to the access or network layer for carrying results of the analysis of the high-risk scenario and the identification of involved vehicles. In an exemplary method of use, a self-vehicle performing identifies vehicles involved in a high-risk scenario, broadcasts one or more times a first message that can prevent or mitigate the high-risk, requests acknowledgement for the first message from only the identified vehicles, and rebroadcasts the first message if acknowledgement is not received from all the identified vehicles before a predetermined condition is fulfilled.
1. A method, comprising: by a self-vehicle performing vehicle-to-everything (V2X) communications:
using V2X communications to identify vehicles involved in a high-risk scenario to obtain identified vehicles;
broadcasting one or more times a first V2X message that can prevent or mitigate the high-risk;
requesting acknowledgement for the first V2X message from only the identified vehicles;
rebroadcasting the first V2X message if acknowledgement is not received from all the identified vehicles before a predetermined condition is fulfilled; and
instructing a congestion control algorithm to prevent a decrease in transmission frequency of the self-vehicle if the first message prevents or mitigates the high-risk.
2. The method of claim 1 , wherein the condition is expiration of a time period.
3. The method of claim 1 , wherein the condition is expiration of a number of rebroadcasts.
4. The method of claim 1 , wherein the high-risk scenario involves the self-vehicle and other vehicles impacted by objects detected by the self-vehicle if object sharing is applied.
5. The method of claim 1 , wherein the identifying the vehicles involved in a high-risk scenario is preceded by detecting the high-risk scenario.
6. The method of claim 1 , further comprising determining that the high-risk scenario has ended and resuming normal V2X operation.
7. The method of claim 2 , further comprising stopping the rebroadcasting of the first message if the time period expires.
8. The method of claim 3 , further comprising stopping the rebroadcasting of the first message if the number of broadcasts expires.
9. Apparatus for vehicle-to-everything (V2X) communications, comprising:
an application layer configured to analyze a high-risk scenario involving a self-vehicle and other vehicles;
an access or network layer configured to ensure reception of V2X messages broadcast by the self-vehicle by requesting acknowledgement only from vehicles identified by V2X communications as involved in the high-risk scenario; and
an interface connecting the application layer to the access or network layer for carrying results of the analysis of the high-risk scenario and the identification of involved vehicles,
wherein the access or network layer includes a controller operative to instruct a congestion control algorithm to perform an action in response to detection of the high-risk scenario.
10. The apparatus of claim 9 , wherein the other vehicles are vehicles impacted by objects detected by the self-vehicle if object sharing is applied.
11. The apparatus of claim 9 , wherein the application layer includes a detector for detecting the high-risk scenario.
12. The apparatus of claim 9 , wherein the application layer includes an identifier for identifying the vehicles involved in the high-risk scenario.
13. The apparatus of claim 9 , wherein the action includes an instruction to prevent a decrease in a frequency of the broadcast by the self-vehicle.