Solution for vehicle-to-everything (V2X) communication authorization in 5G system

1. An apparatus of a user equipment (UE) configured for Vehicle-to-Everything (V 2 X) communication within a fifth-generation system (5GS), the apparatus comprising: processing circuitry; and memory coupled to the processing circuitry, the processing circuitry configured to:

encode a registration request message for transmission to a 5GS network entity as part of a registration procedure, the registration request message encoded to include a PC5 capability for V 2 X communication, the PC5 capability for V 2 X communication to indicate whether the UE is capable of supporting V 2 X communication over a PC5 reference point,

wherein if the PC5 capability for V 2 X communication indicates that the UE is capable of supporting V 2 X communication over a PC reference point, the PC5 capability for V 2 X communication further indicates one or more supported PC5 radio-access technologies (RATs) for V 2 X communication,

wherein the one or more supported PC5 RATs for V 2 X communication comprise a long-term evolution (LTE) RAT for V 2 X communication over an LTE-based PC5 reference point and a new radio (NR) RAT for V 2 X communication over an NR based PC5 reference point,

receive authorization from a policy control function (PCF) of the 5GS for V 2 X communication over at least one of the PC5 reference points and for V 2 X communication over a uU reference point;

in response to the authorization, the processing circuitry is to:

configure the UE for V 2 X communication with another UE over at least one of the LTE-based PC5 reference point and the NR based PC5 reference point;

configure the UE for V 2 X communication with a next-generation radio-access network (NG-RAN) of the 5GS over the Uu reference point;

communicate with the other UE over to PC5 reference point; and

receive V 2 X communications over the uU reference point from the NG-RAN.

2. The apparatus of claim 1 , wherein the authorization comprises an aggregate maximum bit rate (AMBR) per PC5 RAT (UE-PC5 AMBR),

wherein communication with the other UE over the PC5 reference point is capped based on the UE-PC5-AMBR, and

wherein the memory is configured to store the UE-PC5-AMBR.

3. The apparatus of claim 1 wherein the processing circuitry is further configured to encode signalling to report the PC5 capability to the 5GC over an N 1 reference point.

4. The apparatus of claim 3 wherein the processing circuitry is further configured to decode signalling to receive V 2 X parameters for V 2 X communication from the 5GC over the N 1 reference point.

5. The apparatus of claim 1 wherein the authorization from the PCF is received in response to transmission of the registration request message indicating the PC5 capability for V 2 X communication of the UE.

6. The apparatus of claim 1 wherein the processing circuitry is further configured to:

encode a tracking-area update (TAU) request message for transmission, the TAU request message encoded by the processing circuitry to include:

the PC5 capability for V 2 X communication;

an indication of whether the UE is requesting to use an NR based RAT for V 2 X communication over a NR-based PC5 reference point or whether the UE is requesting to use an LTE based RAT for V 2 X communication over an LTE-based PC5 reference point; and

an active flag.

7. The apparatus of claim 6 , wherein the processing circuitry is configured to decode an indication of radio and S 1 bearers that have been re-established for active bearer contexts in response to the active flag in the TAU request message.

8. The apparatus of claim 1 , wherein in response to the authorization, the processing circuitry is to:

configure the UE for V 2 X communication with another UE over both the LTE-based PC5 reference point and the NR based PC5 reference point.

9. The apparatus of claim 1 wherein the processing circuitry comprises a baseband processor.

10. The apparatus of claim 9 further comprising transceiver circuitry coupled to the processing circuitry, the transceiver circuitry coupled to one or more antennas for millimeter wave communications.

11. A non-transitory computer-readable storage medium comprising instructions to configure processing circuitry of a user equipment (UE) for Vehicle-to-Everything (V 2 X) communication within a fifth-generation system (5GS), the instructions to configure the processing circuitry to:

encode a registration request message for transmission to a 5GS network entity as part of a registration procedure, the registration request message encoded to include a PC5 capability for V 2 X communication, the PC5 capability for V 2 X communication to indicate whether the UE is capable of supporting V 2 X communication over a PC5 reference point,

wherein if the PC5 capability for V 2 X communication indicates that the UE is capable of supporting V 2 X communication over a PC5 reference point, the PC5 capability for V 2 X communication further indicates one or more supported PC5 radio-access technologies (RATs) for V 2 X communication,

wherein the one or more supported PC5 RATs for V 2 X communication comprise a long-term evolution (LTE) RAT for V 2 X communication over an LIE-based PC5 reference point and a new radio (NR) RAT for V 2 X communication over an NR based PC5 reference point,

receive authorization from a policy control function (PCF) of the 5GS for V 2 X communication over at least one of the PC5 reference points and for V 2 X communication over a uU reference point;

in response to the authorization, the processing circuitry is to:

configure the UE for V 2 X communication with another UE: over at least one of the LTE-based PC5 reference point and the NR based PC5 reference point;

configure the UE for V 2 X communication with a next-generation radio-access network (NG-RAN) of the 5GS over the uU reference point;

communicate with the other UE over the PC5 reference point; and

receive V 2 X communications over the uU reference point from the NG-RAN.

12. The non-transitory computer-readable storage medium of claim 11 , wherein the authorization comprises an aggregate maximum bit rate (AMBR) per PC5 RAT (UE-PC5 AMBR),

wherein communication with the other UE over the PC5 reference point is capped based on the UE-PC5-AMBR, and

wherein the memory is configured to store the UE-PC5-AMBR.

13. The non-transitory computer-readable storage medium of claim 11 wherein the processing circuitry is further configured to encode signalling to report the PC5 capability to the 5GC over an N 1 reference point.

14. The non-transitory computer-readable storage medium of claim 13 wherein the processing circuitry is further configured to decode signalling to receive V 2 X parameters for V 2 X communication from the 5GC over the N 1 reference point.

15. The non-transitory computer-readable storage medium of claim 11 wherein the authorization from the PCF is received in response to transmission of the registration request message indicating the PC5 capability for V 2 X communication of the UE.

16. The non-transitory computer-readable storage medium of claim 11 , wherein the processing circuitry is further configured to:

encode a tracking-area update (TAU) request message for transmission, the TAU request message encoded by the processing circuitry to include:

the PC5 capability for V 2 X communication;

an indication of whether the UE is requesting to use an NR based RAT for V 2 X communication over a NR-based PC5 reference point or whether the UE is requesting to use an LTE based RAT for V 2 X communication over an LTE-based PC5 reference point; and

an active flag.

17. The non-transitory computer-readable storage medium of claim 16 , wherein the processing circuitry is configured to decode an indication of radio and S 1 bearers that have been re-established for active bearer contexts in response to the active flag in the TAU request message.

18. The non-transitory computer-readable storage medium of claim 11 , wherein in response to the authorization, the processing circuitry is to:

configure the UE for V 2 X communication with another UE over both the LTE-based PC5 reference point and the NR based PC5 reference point.

19. An apparatus of generation Node B (gNB) configured for operating within a fifth-generation system (5GS), the apparatus comprising:

processing circuitry; and memory coupled to the processing circuitry, the processing circuitry configured to:

decode a registration request message received from a User Equipment for transmission to a 5GS network entity as part of a registration procedure, the registration request message encoded to include a PC5 capability for Vehicle-to-Everything (V 2 X) communication, the PC5 capability for V 2 X communication to indicate whether the UE is capable of supporting V 2 X communication over a PC5 reference point,

wherein if the PC5 capability for V 2 X communication indicates that the UE is capable of supporting V 2 X communication over a PC5 reference point, the PC5 capability for V 2 X communication further indicates one or more supported PC5 radio-access technologies (RATs) for V 2 X communication,

wherein the one or more supported PC5 RATs for V 2 X communication comprise a long-term evolution (LTE) RAT for V 2 X communication over an LTE-based PC5 reference point and a new radio (NR) RAF for V 2 X communication over an NR based PC5 reference point,

receive authorization from a policy control function (PCF) of the 5GS for V 2 X communication by the UE over at least one of the PC5 reference points and for V 2 X communication by the UE over a uU reference point;

in response to the authorization, the processing circuitry is to encode signalling for transmission to the UE, the signalling to:

authorize the UE for V 2 X communication with another UE over at least one of the LTE-based PC5 reference point and the NR based PC5 reference point;

authorize the UE for V 2 X communication with a next-generation radio-access network (NG-RAN) of the 5GS over the uU reference point; and

encode V 2 X communications for transmission over the uU reference point to the UE from the NG-RAN,

wherein the gNB is part of the NG-RAN.

20. The apparatus of claim 19 , wherein the authorization comprises an aggregate maximum bit rate (AMBR) per PC5 RAT (UE-PC5 AMBR),

wherein communication with the other UE over the PC5 reference point is capped based on the UE-PC5-AMBR,

wherein the processing circuitry is further configured to decode signalling from the UE that indicates the PC5 capability of the UE over an N 1 reference point, and

wherein the processing circuitry is further configured to decode signalling comprising V 2 X parameters for V 2 X communication by the LTE from the 5GC over an N 2 reference point.