Access to SNPN by using credential owned by entity separated from SNPN, and support for F1 interface therefor
Provided are a method and apparatus for: access to a stand-alone non-public network (SNPN) by using credential owned by an entity separated from the SNPN; and support for an F1 interface therefor. User Equipment (UE) operating in a wireless communication system receives system information from the stand-alone non-public network (SNPN). The system information includes information about whether or not the SNPN supports underconfigured UE. The UE transmits a first registration request message to the SNPN, on the basis of the information about whether or not to support the underconfigured UE, and receives, from the SNPN, a registration reject message as a response to same. The registration reject message includes information about home SPs supported by the SNPN. The UE performs registration by selecting at least one home SP from which the UE desires to receive a service from among the home SPs supported by the SNPN.
1 . A method comprising:
acquiring, by a user equipment (UE), system information from a base station,
wherein the system information includes i) an identity (ID) of a stand-alone non-public network (SNPN) the base station provides access to, and ii) information informing whether the SNPN allows registration attempts with credentials from a credential holder from the UE that is not explicitly configured to select the SNPN;
transmitting, by the UE, a first registration request message to the SNPN based on the information informing that the SNPN allows registration attempts with credentials from the credential holder from the UE that is not explicitly configured to select the SNPN,
wherein the first registration request message includes an identifier (ID) of a home service provider (SP) from which the UE intends to receive service through the SNPN and credentials for the home SP;
based on a service level agreement (SLA) not being established between the home SP and the SNPN, receiving, by the UE, a registration reject message from the SNPN in response to the first registration request message,
wherein the registration reject message includes information related to home SPs supported by the SNPN;
selecting, by the UE, at least one home SP among the home SPs supported by the SNPN; and
transmitting, by the UE, a second registration request message including an ID of the selected home SP and credentials for the selected home SP to the SNPN.
2 . The method of claim 1 , wherein the home SPs supported by the SNPN have established an SLA with the SNPN.
3 . The method of claim 1 , wherein authentication of the UE is performed through Authentication Server Function (AUSF) and Unified Data Management (UDM) of the selected home SP based on the ID of the selected home SP.
4 . The method of claim 3 , wherein, based on the authentication of the UE being completed, a registration accept message is received from the SNPN in response to the second registration request message.
5 . The method of claim 1 , wherein the UE is in communication with at least one of a mobile device, a network, and/or autonomous vehicles other than the UE.
6 . A user equipment (UE) comprising:
at least one transceiver;
at least one processor; and
at least one memory operably connectable to the at least one processor and storing instructions that, based on being executed by the at least one processor, perform operations comprising:
acquiring, via the at least one transceiver, system information from a base station,
wherein the system information includes i) an identity (ID) of a stand-alone non-public network (SNPN) the base station provides access to, and ii) information informing whether the SNPN allows registration attempts with credentials from a credential holder from the UE that is not explicitly configured to select the SNPN;
transmitting, via the at least one transceiver, a first registration request message to the SNPN based on the information informing that the SNPN allows registration attempts with credentials from the credential holder from the UE that is not explicitly configured to select the SNPN,
wherein the first registration request message includes an identifier (ID) of a home service provider (SP) from which the UE intends to receive service through the SNPN and credentials for the home SP;
based on a service level agreement (SLA) not being established between the home SP and the SNPN, receiving, via the at least one transceiver, a registration reject message from the SNPN in response to the first registration request message,
wherein the registration reject message includes information related to home SPs supported by the SNPN;
selecting at least one home SP among the home SPs supported by the SNPN; and
transmitting, via the at least one transceiver, a second registration request message including an ID of the selected home SP and credentials for the selected home SP to the SNPN.
7 . A base station comprising:
at least one transceiver;
at least one processor; and
at least one memory operably connectable to the at least one processor and storing instructions that, based on being executed by the at least one processor, perform operations comprising:
transmitting, via the at least one transceiver, system information to a user equipment (UE),
wherein the system information includes i) an identity (ID) of a stand-alone non-public network (SNPN) the base station provides access to, and ii) information informing whether the SNPN allows registration attempts with credentials from a credential holder from the UE that is not explicitly configured to select the SNPN;
receiving, via the at least one transceiver, a first registration request message from the UE based on the information informing that the SNPN allows registration attempts with credentials from the credential holder from the UE that is not explicitly configured to select the SNPN,
wherein the first registration request message includes an identifier (ID) of a home service provider (SP) from which the UE intends to receive service through the SNPN and credentials for the home SP;
based on a service level agreement (SLA) not being established between the home SP and the SNPN, transmitting, via the at least one transceiver, a registration reject message to the UE in response to the first registration request message,
wherein the registration reject message includes information related to home SPs supported by the SNPN; and
receiving, from the UE via the at least one transceiver, a second registration request message including an ID of a home SP selected by the UE among the home SPs supported by the SNPN and credentials for the selected home SP.