Apparatuses, methods, and systems are disclosed for NSSAI configuration. One method includes determining a configured network slice selection assistance information for a public land mobile network for a remote unit in response to a trigger from an access and mobility management function. The access and mobility management function, a network slice selection function, or a combination thereof determines the configured network slice selection assistance information. The method includes providing the configured network slice selection assistance information to the remote unit via the access and mobility management function.

Apparatuses, methods, and systems are disclosed for NSSAI configuration. One method includes determining a configured network slice selection assistance information for a public land mobile network for a remote unit in response to a trigger from an access and mobility management function. The access and mobility management function, a network slice selection function, or a combination thereof determines the configured network slice selection assistance information. The method includes providing the configured network slice selection assistance information to the remote unit via the access and mobility management function.

A wireless communication method for use in a network exposure function is provided. The wireless communication method comprises receiving, from a session management function of a core network, a subscription address in a radio access network, transmitting, towards the subscription address in the radio access network, a subscription request, and receiving, from the radio access network, radio access network information corresponding to the subscription request.

A wireless communication method for use in a network exposure function is provided. The wireless communication method comprises receiving, from a session management function of a core network, a subscription address in a radio access network, transmitting, towards the subscription address in the radio access network, a subscription request, and receiving, from the radio access network, radio access network information corresponding to the subscription request.

Systems, methods, and software that perform offline charging. One embodiment comprises a Charging Data Function (CDF) of an Offline Charging System (OFCS). The CDF receives accounting requests for a session from a Charging Trigger Function (CTF), and generates an incomplete Charging Data Record (CDR) for the session based on the accounting requests. The CDF identifies request identifiers (ID) assigned to the accounting requests used to generate the first incomplete CDR, and inserts the request IDs in the incomplete CDR. The CDF determines whether one or more of the accounting requests used to generate the incomplete CDR were indicated as a re-transmitted accounting request by the CTF, and inserts content information for the re-transmitted accounting request(s) in the incomplete CDR.

Systems, methods, and software that perform offline charging. One embodiment comprises a Charging Data Function (CDF) of an Offline Charging System (OFCS). The CDF receives accounting requests for a session from a Charging Trigger Function (CTF), and generates an incomplete Charging Data Record (CDR) for the session based on the accounting requests. The CDF identifies request identifiers (ID) assigned to the accounting requests used to generate the first incomplete CDR, and inserts the request IDs in the incomplete CDR. The CDF determines whether one or more of the accounting requests used to generate the incomplete CDR were indicated as a re-transmitted accounting request by the CTF, and inserts content information for the re-transmitted accounting request(s) in the incomplete CDR.

The present disclosure may provide a method of operating a terminal based on a plurality of networks in a wireless communication system. Herein, the method of operating the terminal may include establishing a connection with a public land mobile network (PLMN), determining whether or not to simultaneously access the PLMN and non-public networks (NPN), transmitting, to the NPN, indication information indicating a simultaneous access request for the PLMN and the NPN, receiving, from the NPN, supported PLMN list information, and when the connected PLMN is included in the supported PLMN list information, accessing the NPN through a packet data unit (PDU) session of the PLMN. Herein, a supported PLMN list may be a list which is determined according to whether or not a quality of service (QoS) is supported based on a service level agreement (SLA) between the PLMN and the NPN.

Disclosed are a method and apparatus for supporting mobility for collection and analysis of network data in a wireless communication network. The method may comprise the steps of: identifying, by a first network function (NF) servicing a terminal, that the terminal moves from the first NF to a second NF; identifying that the first NF is subscribed to a network data collection and analytics function (NWDAF) so that the first NF uses analytics information related to the terminal; and transmitting, to the second NF, a message including information about subscriptions related to the NWDAF.

Disclosed are a method and apparatus for supporting mobility for collection and analysis of network data in a wireless communication network. The method may comprise the steps of: identifying, by a first network function (NF) servicing a terminal, that the terminal moves from the first NF to a second NF; identifying that the first NF is subscribed to a network data collection and analytics function (NWDAF) so that the first NF uses analytics information related to the terminal; and transmitting, to the second NF, a message including information about subscriptions related to the NWDAF.

Provided is to technology for moving a virtual entity in a virtual network. A method of moving a virtual entity implemented in a virtual network includes providing a service to a user terminal located at a first position by using a virtual entity implemented in a first host located in a first virtual network and when a position of the user terminal is changed, moving the virtual entity to another host capable of providing the service at a close distance to the position-changed user terminal.