According to an aspect of the present invention, a procedure for initial registration of a UE and a procedure for periodic registration or registration based on movement, and a communication unit are provided which are used to implement Network Slice Specific Authentication and Authorization in 5GS. Furthermore, by providing the Network Slice Specific Authentication and Authorization initiated by a network, a procedure for changing UE configurations initiated by the network, the procedure being initiated based on completion of the Network Slice Specific Authentication and Authorization, a de-registration procedure initiated by the network, and a communication unit, a communication unit is provided that is used to implement functions related to the Network Slice Specific Authentication and Authorization in the 5GS.

According to an aspect of the present invention, a procedure for initial registration of a UE and a procedure for periodic registration or registration based on movement, and a communication unit are provided which are used to implement Network Slice Specific Authentication and Authorization in 5GS. Furthermore, by providing the Network Slice Specific Authentication and Authorization initiated by a network, a procedure for changing UE configurations initiated by the network, the procedure being initiated based on completion of the Network Slice Specific Authentication and Authorization, a de-registration procedure initiated by the network, and a communication unit, a communication unit is provided that is used to implement functions related to the Network Slice Specific Authentication and Authorization in the 5GS.

A wireless access node serves wireless User Equipment (UEs) and wireless Integrated Access and Backhaul Mobile Terminations (IAB MTs). A radio exchanges access communications with the UEs over a frequency channel. The radio receives an IAB request from one of the IAB MTs, and in response, a controller allocates the frequency channel into a UE subchannel and an MT subchannel. The radio now exchanges access communications with the UEs over the UE subchannel and exchanges backhaul communications with the wireless IAB MT over the MT subchannel. The controller reallocates the frequency channel when an IAB MT is added to give the new IAB MT its own MT subchannel. The controller reallocates the frequency channel when an IAB MT is removed to increase the size of the UE subchannel.

A wireless access node serves wireless User Equipment (UEs) and wireless Integrated Access and Backhaul Mobile Terminations (IAB MTs). A radio exchanges access communications with the UEs over a frequency channel. The radio receives an IAB request from one of the IAB MTs, and in response, a controller allocates the frequency channel into a UE subchannel and an MT subchannel. The radio now exchanges access communications with the UEs over the UE subchannel and exchanges backhaul communications with the wireless IAB MT over the MT subchannel. The controller reallocates the frequency channel when an IAB MT is added to give the new IAB MT its own MT subchannel. The controller reallocates the frequency channel when an IAB MT is removed to increase the size of the UE subchannel.

The present disclosure relates to a pre-5.sup.th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4.sup.th-Generation (4G) communication system such as Long Term Evolution (LTE). Embodiments herein disclose a method performed by a terminal in a mobile communication system. The method includes performing a registration procedure on a first standalone non-public network (SNPN), selecting a second SNPN based on a predetermined condition, and transmitting, to a network entity, a registration request message on the second SNPN for an initial registration, in case that the second SNPN differs from the first SNPN.

The present disclosure relates to a pre-5.sup.th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4.sup.th-Generation (4G) communication system such as Long Term Evolution (LTE). Embodiments herein disclose a method performed by a terminal in a mobile communication system. The method includes performing a registration procedure on a first standalone non-public network (SNPN), selecting a second SNPN based on a predetermined condition, and transmitting, to a network entity, a registration request message on the second SNPN for an initial registration, in case that the second SNPN differs from the first SNPN.

The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate.

A method for handling Service Request (SR) procedure in a wireless network by a network apparatus is provided. The method includes initiating a User Equipment Configuration Update (UCU) procedure. Further, the method includes receiving a SR message from a Multi SIM (MUSIM) UE before completion of the UCU procedure. Further, the method includes determining whether the SR message comprises a User Equipment (UE) request type Information Element (IE) set to “Non-Access Stratum (NAS) signaling connection release”. In an embodiment, the method includes aborting the UCU procedure and processing the SR procedure in response to determining that the service request message comprises the UE request type IE set to “NAS signaling connection release”. In another embodiment, the method includes processing both the UCU procedure and the SR procedure in response to determining that the SR message does not comprises the UE request type IE set to “NAS signaling connection release”.

The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate.

A method for handling Service Request (SR) procedure in a wireless network by a network apparatus is provided. The method includes initiating a User Equipment Configuration Update (UCU) procedure. Further, the method includes receiving a SR message from a Multi SIM (MUSIM) UE before completion of the UCU procedure. Further, the method includes determining whether the SR message comprises a User Equipment (UE) request type Information Element (IE) set to “Non-Access Stratum (NAS) signaling connection release”. In an embodiment, the method includes aborting the UCU procedure and processing the SR procedure in response to determining that the service request message comprises the UE request type IE set to “NAS signaling connection release”. In another embodiment, the method includes processing both the UCU procedure and the SR procedure in response to determining that the SR message does not comprises the UE request type IE set to “NAS signaling connection release”.

A serving network establishes a connection with a UE via an N3AN using a trusted registration procedure to establish a secure access link between the UE and the serving network via the N3AN. The serving network sends a trust indication message via the N3AN to the UE using the secure access link to identify the N3AN as trusted or untrusted. When the received trust indication message indicates the N3AN is untrusted, the serving network executes an untrusted registration procedure with the UE using the secure access link to establish the connection between the UE and the serving network. When the received trust indication message indicates the N3AN is trusted, the serving network continues execution of the initial registration with the UE using the trusted registration procedure to establish the connection between the UE and the serving network. The UE and serving network exchange messages via the established connection.

A serving network establishes a connection with a UE via an N3AN using a trusted registration procedure to establish a secure access link between the UE and the serving network via the N3AN. The serving network sends a trust indication message via the N3AN to the UE using the secure access link to identify the N3AN as trusted or untrusted. When the received trust indication message indicates the N3AN is untrusted, the serving network executes an untrusted registration procedure with the UE using the secure access link to establish the connection between the UE and the serving network. When the received trust indication message indicates the N3AN is trusted, the serving network continues execution of the initial registration with the UE using the trusted registration procedure to establish the connection between the UE and the serving network. The UE and serving network exchange messages via the established connection.