Proximity service multi-hop relay configuration

1. A method for wireless communications at a network relay user equipment (UE), comprising:

establishing a communication link with a network;

receiving, from a remote UE, a relay configuration request comprising UE capability information associated with the remote UE;

receiving, from the network via the communication link, a code allocation for the remote UE as a multi-hop relay, wherein receiving the code allocation indicates that the remote UE can serve as the multi-hop relay;

transmitting, to the remote UE in response to the relay configuration request comprising the UE capability information, a relay configuration that indicates an authorization for the remote UE to act as a multi-hop relay to provide a connection to the network for one or more client UEs, wherein the authorization is based at least in part on the code allocation; and

providing a network connection service to the one or more client UEs through the remote UE according to the relay configuration.

2. The method of claim 1 , further comprising:

transmitting, to the network via the communication link, a relay service code request based at least in part on receiving the relay configuration request.

3. The method of claim 2 , further comprising:

determining that the remote UE can serve as the multi-hop relay based at least in part on the code allocation, wherein transmitting, to the network, the relay service code request is further based at least in part on the determining and wherein transmitting the relay service code request indicates that the remote UE can serve as the multi-hop relay.

4. The method of claim 1 , wherein the relay configuration comprises one or more of a relay service code, hop information, quality of service information, and network information.

5. The method of claim 1 , further comprising:

receiving a communication request from the remote UE over a second communication link, wherein the communication request was relayed from the one or more client UEs of the remote UE.

6. The method of claim 5 , wherein the communication request comprises a service request and an identifier of the one or more client UEs.

7. The method of claim 5 , further comprising:

establishing a protocol data unit session or a packet data network connection with the network based at least in part on receiving the communication request.

8. The method of claim 5 , further comprising:

reporting the one or more client UEs to the network based at least in part on receiving the communication request.

9. The method of claim 1 , further comprising:

receiving a service request from the remote UE over a second communication link; and

transmitting, to the remote UE, an acknowledgement in response to the service request, wherein the service request comprises an identifier of a client UE.

10. The method of claim 9 , further comprising:

reporting the client UE to the network based at least in part on receiving a report request from the remote UE or receiving the service request.

11. The method of claim 1 , wherein the connection to the network from the remote UE to the one or more client UEs is a sidelink connection.

12. A method for wireless communications at a remote user equipment (UE), comprising:

receiving, from a network relay UE, a relay configuration that authorizes the remote UE as a multi-hop relay to provide a connection to a network for one or more client UEs that are out of coverage of the network;

transmitting a relay discovery message comprising relay information based at least in part on receiving the relay configuration from the network relay UE;

receiving a communication request from the one or more client UEs based at least in part on transmitting the relay discovery message, wherein the communication request comprises a service request and an identifier of the one or more client UEs;

transmitting a report request to the network relay UE that requests the network relay UE to report the one or more client UEs to the network;

and

providing a network connection service to the one or more client UEs according to the relay configuration based at least in part on the relay discovery message and after transmitting the report request.

13. The method of claim 12 , further comprising:

transmitting, to the network relay UE, a relay configuration request comprising UE capability information associated with the remote UE, wherein receiving the relay configuration is based at least in part on the relay configuration request.

14. The method of claim 12 , wherein transmitting the relay discovery message further comprises:

transmitting the relay discovery message according to a periodic schedule.

15. The method of claim 12 , wherein transmitting the relay discovery message further comprises:

receiving a discovery query from the one or more client UEs; and

transmitting the relay discovery message in response to the discovery query.

16. The method of claim 12 , wherein the relay information comprises one or more of hop information, quality of service information, and network information.

17. The method of claim 12 , further comprising:

transmitting the communication request from the one or more client UEs to the network relay UE.

18. The method of claim 17 , further comprising:

receiving security keys from the network relay UE; and

establishing a communication link with the one or more client UEs using the security keys.

19. The method of claim 12 , further comprising:

allocating an internet protocol address or prefix for the one or more client UEs from internet protocol address or prefix for the remote UE received from the network relay UE; and

establishing a communication link with the one or more client UEs using the internet protocol address or prefix for the one or more client UEs.

20. The method of claim 19 , further comprising:

transmitting the service request to the network relay UE over a second communication link; and

receiving, from the network relay UE, an acknowledgement in response to the service request, wherein the service request comprises the identifier of the one or more client UEs.

21. The method of claim 19 , further comprising:

relaying communications from the network to the one or more client UEs using the internet protocol address or prefix for the one or more client UEs.

22. The method of claim 12 , wherein the connection to the network from the remote UE to the one or more client UEs is a sidelink connection.

23. An apparatus for wireless communications at a network relay user equipment (UE), comprising:

a processor,

memory coupled with the processor; and

instructions stored in the memory and executable by the processor to cause the apparatus to:

establish a communication link with a network;

receive, from a remote UE, a relay configuration request comprising UE capability information associated with the remote UE;

receive, from the network via the communication link, a code allocation for the remote UE as a multi-hop relay, wherein receiving the code allocation indicates that the remote UE can serve as the multi-hop relay;

transmit, to the remote UE in response to the relay configuration request comprising the UE capability information, a relay configuration that indicates an authorization for the remote UE to act as a multi-hop relay to provide a connection to the network for one or more client UEs, wherein the authorization is based at least in part on the code allocation; and

provide a network connection service to the one or more client UEs through the remote UE according to the relay configuration.

24. An apparatus for wireless communications at a remote user equipment (UE), comprising:

a processor,

memory coupled with the processor; and

instructions stored in the memory and executable by the processor to cause the apparatus to:

receive, from a network relay UE, a relay configuration that authorizes the remote UE as a multi-hop relay to provide a connection to a network for one or more client UEs that are out of coverage of the network;

transmit a relay discovery message comprising relay information based at least in part on receiving the relay configuration from the network relay UE;

receive a communication request from the one or more client UEs based at least in part on transmitting the relay discovery message, wherein the communication request comprises a service request and an identifier of the one or more client UEs;

transmit a report request to the network relay UE that requests the network relay UE to report the one or more client UEs to the network;

and

provide a network connection service to the one or more client UEs according to the relay configuration based at least in part on the relay discovery message and after transmit the report request.

25. The apparatus of claim 24 , wherein the instructions are further executable by the processor to cause the apparatus to:

transmit, to the network relay UE, a relay configuration request comprising UE capability information associated with the remote UE, wherein receiving the relay configuration is based at least in part on the relay configuration request.