Method and apparatus for registration and protocol data unit session establishment for onboarding of user equipment in mobile communication system
A method for an access and mobility management function (AMF) to register a user equipment (UE) and establish a session in a standalone non-public network (SNPN) is provided. The method includes receiving a registration request message from the UE through a base station, wherein the registration request message includes an onboarding indication, an onboarding subscriber concealed identifier (SUCI) set to “SNPN onboarding,” and default UE credentials, selecting a session management function (SMF) to establish a restricted protocol data unit (PDU) session for remote provisioning of the UE, transmitting a PDU session establishment request message to the selected SMF, receiving a PDU session establishment response message including information indicating PDU session establishment acceptance and a PDU session identifier (ID) from the SMF, and transmitting a message indicating UE registration and PDU session establishment acceptance to the UE through the base station.
1. A method for registering a user equipment (UE) and establishing a session by an access and mobility management function (AMF) in a standalone non-public network (SNPN), the method comprising:
receiving, from the UE through a base station, a registration request message including an onboarding indication, an onboarding subscriber concealed identifier (SUCI) set to SNPN onboarding, and default UE credentials;
selecting a session management function (SMF) to establish a restricted protocol data unit (PDU) session for remote provisioning of the UE;
transmitting, to the selected SMF, a PDU session establishment request message;
receiving, from the selected SMF, a PDU session establishment response message including information indicating PDU session establishment acceptance and a PDU session identifier (ID); and
transmitting, to the UE through the base station, a message indicating UE registration and PDU session establishment acceptance.
2. The method of claim 1 , wherein the registration request message further includes UE configuration data for user plane (UP) remote provisioning.
3. The method of claim 2 , wherein the UE configuration data includes at least one of an internet protocol (IP) address or a fully qualified domain name (FQDN) of a provisioning server (PVS).
4. The method of claim 1 , further comprising:
selecting an authentication server function (AUSF) based on the received registration request message; and
performing authentication of the UE with the AUSF based on the registration request message.
5. The method of claim 1 , wherein the PDU session establishment request message includes the onboarding SUCI received from the UE.
6. The method of claim 5 , further comprising in case that a PDU session identifier (ID) is not received from the UE:
generating a random PDU session ID; and
including the generated random PDU session ID in the PDU session establishment request message.
7. The method of claim 1 , wherein the PDU session establishment response message includes at least one of a protocol configuration option (PCO), a quality-of-service (QoS) rule, a QoS flow level QoS parameter, single-network slice selection assistance information (S-NSSAI), or a data network name (DNN).
8. The method of claim 7 , wherein the PCO includes at least one of a PVS internet protocol (IP) address or a PVS fully qualified domain name (FQDN).
9. An access and mobility management function (AMF) in a mobile communication system for registering a user equipment (UE) and establishing a session in a standalone non-public network (SNPN), the AMF comprising:
a transceiver configured to communicate with other network functions of the SNPN and the UE;
a memory; and
at least one processor,
wherein the at least one processor is configured to:
receive, from the UE through a base station, a registration request message including an onboarding indication, an onboarding subscriber concealed identifier (SUCI) set to SNPN onboarding, and default UE credentials,
select a session management function (SMF) to establish a restricted protocol data unit (PDU) session for remote provisioning of the UE,
transmit, to the selected SMF, a PDU session establishment request message,
receive, from the selected SMF, a PDU session establishment response message including information indicating PDU session establishment acceptance and a PDU session identifier (ID), and
transmit, to the UE through the base station, a message indicating UE registration and PDU session establishment acceptance.
10. The AMF of claim 9 , wherein the registration request message further includes UE configuration data for user plane (UP) remote provisioning.
11. The AMF of claim 10 , wherein the UE configuration data includes at least one of an internet protocol (IP) address or a fully qualified domain name (FQDN) of a provisioning server (PVS).
12. The AMF of claim 9 , wherein the at least one processor is further configured to:
select an authentication server function (AUSF) based on the received registration request message; and
perform authentication of the UE with the AUSF based on the registration request message.
13. The AMF of claim 9 , wherein the PDU session establishment request message includes the onboarding SUCI received from the UE.
14. The AMF of claim 13 , wherein in case that a PDU session identifier (ID) is not received from the UE, the at least one processor is further configured to:
generate a random PDU session ID; and
include the generated random PDU session ID in the PDU session establishment request message.
15. The AMF of claim 9 , wherein the PDU session establishment response message includes at least one of a protocol configuration option (PCO), a quality-of-service (QoS) rule, a QoS flow level QoS parameter, single-network slice selection assistance information (S-NSSAI), or a data network name (DNN).
16. The AMF of claim 15 , wherein the PCO includes at least one of a provisioning server (PVS) internet protocol (IP) address or a PVS fully qualified domain name (FQDN).