Cellular vehicle to everything assisted next generation emergency call

1. A method for wireless communication, the method comprising:

receiving a trigger for establishing an emergency call at a first vehicle, the emergency call trigger comprising an indication of a manual eCall or an indication of an automatic eCall triggered by an in-vehicle system (IVS);

determining, in response to the trigger, whether a communication system associated with the first vehicle successfully established a connection with a first cellular communication network supporting out-of-band cellular transmissions to a public safety access point (PSAP);

determining the communication system failed to establish the connection with the first cellular communication network;

searching for a second cellular communication network supporting in-band cellular transmissions to the PSAP in response to the communication system failing to establish the connection with the first cellular communication network;

searching for a second vehicle with peer-to-peer wireless access capability when the second cellular communication network is not found; and

transmitting vehicle related data to the second vehicle via the peer-to-peer wireless access capability when the second vehicle is found.

2. The method of claim 1 , further comprising establishing the emergency call when the communication system currently has access to the first cellular communication network.

3. The method of claim 1 , further comprising:

connecting to the second cellular communication network when the second cellular communication network is found; and

establishing the emergency call when the communication system is connected to the second cellular communication network.

4. The method of claim 1 , wherein the second vehicle transmits the vehicle related data to the PSAP via a third cellular communication network.

5. The method of claim 4 , wherein the second vehicle searches for the third cellular communication network when a communication system associated with the second vehicle currently does not have access to the third cellular communication network.

6. The method of claim 5 , wherein the second vehicle discards the vehicle related data after failing to find the third cellular communication network during a threshold period of time or after successfully transmitting the vehicle related data to the PSAP.

7. The method of claim 1 , wherein the vehicle related data comprises at least one of a unique identifier associated with the first vehicle, a location of the first vehicle, a time at which the first vehicle received the trigger for establishing the emergency call, an indication of the emergency call trigger, or a combination thereof.

8. The method of claim 1 , wherein the first cellular communication network and the second cellular communication network support access via long term evolution (LTE) or new radio (NR).

9. An apparatus for wireless communication, comprising:

a memory; and

at least one processor coupled to the memory, the at least one processor configured:

to receive a trigger for establishing an emergency call at a first vehicle, the emergency call trigger comprising an indication of a manual eCall or an indication of an automatic eCall triggered by an in-vehicle system (IVS);

to determine, in response to the trigger, whether a communication system associated with the first vehicle successfully established a connection with a first cellular communication network supporting out-of-band cellular transmissions to a public safety access point (PSAP);

to determine the communication system failed to establish the connection with the first cellular communication network;

to search for a second cellular communication network supporting in-band cellular transmissions to the PSAP in response to the communication system failing to establish the connection with the first cellular communication network;

to search for a second vehicle with peer-to-peer wireless access capability when the second cellular communication network is not found; and

to transmit vehicle related data to the second vehicle via the peer-to-peer wireless access capability when the second vehicle is found.

10. The apparatus of claim 9 , wherein the at least one processor is further configured to establish the emergency call when the communication system currently has access to the first cellular communication network.

11. The apparatus of claim 9 , wherein the at least one processor is further configured:

to connect to the second cellular communication network when the second cellular communication network is found; and

to establish the emergency call when the communication system is connected to the second cellular communication network.

12. The apparatus of claim 9 , wherein the second vehicle transmits the vehicle related data to the PSAP via a third cellular communication network.

13. The apparatus of claim 12 , wherein the second vehicle searches for the third cellular communication network when a communication system associated with the second vehicle currently does not have access to the third cellular communication network.

14. The apparatus of claim 13 , wherein the second vehicle discards the vehicle related data after failing to find the third cellular communication network during a threshold period of time or after successfully transmitting the vehicle related data to the PSAP.

15. The apparatus of claim 9 , wherein the vehicle related data comprises at least one of a unique identifier associated with the first vehicle, a location of the first vehicle, a time at which the first vehicle received the trigger for establishing the emergency call, an indication of the emergency call trigger, or a combination thereof.

16. The apparatus of claim 9 , wherein the first cellular communication network and the second cellular communication network support access via long term evolution (LTE) or new radio (NR).

17. A non-transitory computer-readable medium having program code recorded thereon, the program code executed by a processor and comprising:

program code to receive a trigger for establishing an emergency call at a first vehicle, the emergency call trigger comprising an indication of a manual eCall or an indication of an automatic eCall triggered by an in-vehicle system (IVS);

program code to determine, in response to the trigger, whether a communication system associated with the first vehicle successfully established a connection with a first cellular communication network supporting out-of-band cellular transmissions to a public safety access point (PSAP);

program code to determine the communication system failed to establish the connection with the first cellular communication network;

program code to search for a second cellular communication network supporting in-band cellular transmissions to the PSAP in response to the communication system failing to establish the connection with the first cellular communication network;

program code to search for a second vehicle with peer-to-peer wireless access capability when the second cellular communication network is not found; and

program code to transmit vehicle related data to the second vehicle via the peer-to-peer wireless access capability when the second vehicle is found.

18. The non-transitory computer-readable medium of claim 17 , wherein the program code further comprises program code to establish the emergency call when the communication system currently has access to the first cellular communication network.

19. The non-transitory computer-readable medium of claim 17 , wherein the program code further comprises:

program code to connect to the second cellular communication network when the second cellular communication network is found; and

program code to establish the emergency call when the communication system is connected to the second cellular communication network.

20. The non-transitory computer-readable medium of claim 17 , wherein the second vehicle transmits the vehicle related data to the PSAP via a third cellular communication network.

21. The non-transitory computer-readable medium of claim 20 , wherein the second vehicle searches for the third cellular communication network when a communication system associated with the second vehicle currently does not have access to the third cellular communication network.

22. The non-transitory computer-readable medium of claim 21 , wherein the second vehicle discards the vehicle related data after failing to find the third cellular communication network during a threshold period of time or after successfully transmitting the vehicle related data to the PSAP.

23. The non-transitory computer-readable medium of claim 17 , wherein the vehicle related data comprises at least one of a unique identifier associated with the first vehicle, a location of the first vehicle, a time at which the first vehicle received the trigger for establishing the emergency call, an indication of the emergency call trigger, or a combination thereof.

24. The non-transitory computer-readable medium of claim 17 , wherein the first cellular communication network and the second cellular communication network support access via long term evolution (LTE) or new radio (NR).