Abstract: The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. Embodiments disclosed herein provide a method for handling slice Deregistration Inactivity timer of on-demand S-NSSAI in a telecommunication network (1000) by a UE (100). The method includes determining whether a MA PDU session is successfully established. In an embodiment, the method includes avoiding to start a slice de-registration inactivity timer in the UE and an AMF entity (200) on any access type, when the MA PDU session is successfully established. In another embodiment, the method includes starting the slice deregistration inactivity timer for the on-demand S-NSSAI over a corresponding access type, when the MA PDU session is not successfully established.

Abstract: The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. Specifically, the disclosure related to a method performed by a user equipment (UE) for managing behavior of Equivalent Stand-alone Non-Public Network (SNPN) in a wireless communication system.

Abstract: Embodiments herein disclose a method for handling a PLMN selection in a wireless network by a UE. The method includes receiving, by a user equipment (UE), slice-based PLMN selection information from a network entity of a home public land mobile network (HPLMN), and selecting, by the UE, a visited public land mobile network (VPLMN) among a plurality of PLMNs based on a priority order defined in the slice-based PLMN selection information.

Abstract: The disclosure relates to a fifth generation (5G) or sixth generation (6G) communication system for supporting a higher data transmission rate. A method performed by a user equipment (UE) for handling session management (SM) procedure in a wireless network system is provided. The method includes establishing, by the UE, a protocol data unit (PDU) session with a network apparatus in the wireless network system, determining, by the UE, whether the UE is in an area where a single-network slice selection assistance information (S-NSSAI) associated with the PDU session is not allowed or not supported by the network apparatus, and in case that the UE is in the area where the S-NSSAI of the PDU session is not allowed or not supported by the network apparatus, initiating, by the UE, a PDU session release procedure or initiating a PDU session modification procedure.

Abstract: A method of a mobile station (MS) for performing closed access group (CAG) selection is disclosed. The method may comprise camping on a cell of a first public land mobile network (PLMN); and performing PLMN selection, cell selection or cell re-selection based on a current time, and a time validity information corresponding to each CAG-identifier(ID) for a second PLMN, based on the MS being in a limited service state in the first PLMN, and being in an automatic PLMN selection mode.

Abstract: The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. A method performed by a network slice admission control function (NSACF) in a communication system, the method comprising: receiving, from a session management function plus packet data network gateway control plane function (SMF+PGW?C), a message for controlling a number of user equipment (UEs) registered to a network slice, the message comprising an update flag; identifying whether the update flag comprises update value indicating that an access type of the UE is to be replaced with a new access type; and in case that the update flag comprises the update value, replacing the access type of the UE with the new access type.

Abstract: The disclosure relates to a 5G communication system or a 6G communication system for supporting higher data rates beyond a 4G communication system such as long term evolution (LTE). Embodiments disclosed herein provide a method for managing a NSSAI list in a wireless network (1000) by a UE (100). The method includes receiving the partially allowed NSSAI list or an allowed NSSAI list from a NF entity (200) in the wireless network (1000). Further, the method includes deleting the S-NSSAI, from the partially rejected NSSAI, included in the partially allowed NSSAI list or allowed NSSAI list. Further, the method includes receiving the configured NSSAI information from the NF entity (200). Further, the method includes deleting a stored partially rejected NSSAI based on the configured NSSAI information.

Abstract: A method and a system for capability reporting for handling public land mobile network (PLMN)-specific attempt counters in a disaster roaming registration procedure in a wireless communication system are provided. The method includes receiving, by a user equipment (UE), a registration accept message from a PLMN upon, based on initiation of the disaster roaming registration procedure between the UE and the PLMN. Further, the method includes determining, by the UE, whether the registration accept message is for disaster roaming services, based on the registration accept message. Further, the method includes performing, by the UE, one of resetting a PLMN-specific attempt counter for the PLMN, based on the registration accept message being determined to not be for the disaster roaming services, or resetting the PLMN-specific attempt counter of the PLMN for a PLMN determined by the UE as having a disaster condition, based on the registration accept message being determined to be for the disaster roaming services.

Abstract: Embodiments herein provide a method for managing a priority of Visited Public Land Mobile Networks (VPLMNs) of a wireless communication network. The method includes receiving a registration accept message including steering of roaming (SoR) information from a VPLMN; in response to a security check of the SoR information being failed, adding the VPLMN to a SoR abort list including PLMNs where a registration was aborted due to SoR; and deleting the SoR abort list after a predetermined time period.

Abstract: The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. Embodiments herein disclose a method for handling an UE (100) during an unavailability period in a wireless network (1000) by the UE (100). The method includes detecting that a network apparatus (700) in the wireless network (1000) supports for the unavailability period in a last registration procedure. Further, the method includes determining an event is triggered, where the event makes the UE to become 2024/101810 unavailable. Further, the method includes creating a REGISTRATION REQUEST message by including an information to indicate unavailability period that starts immediately. Further, the method includes setting a follow-on request indicator to “No follow-on request pending” and not include an uplink data status IE or an allowed PDU session status IE in the REGISTRATION REQUEST message. Further, the method includes sending the REGISTRATION REQUEST message to the network apparatus (700).

Abstract: The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. The present disclosure relates to method and apparatus for managing forbidden tracking areas in communication network. The method comprises receiving, from an access and mobility function (AMF), a reject message including a rejection cause regarding an access to at least one network slice, wherein the UE is camped on a first tracking area of a plurality of tracking areas associated with a public land mobile network (PLMN), and wherein the rejection cause is based on an error indicating unavailability of the at least one network slice in the first tracking area; storing information of the first tracking area in a list of forbidden tracking areas for the UE; and recording the error while storing the information of the first tracking area in the list of forbidden tracking areas for the UE.

Abstract: The disclosure relates to a fifth generation (5G) or sixth generation (6G) communication system. Embodiments herein disclose methods for maintaining priority of a VPLMN during a PLMN selection procedure by a UE. The method includes ignoring a pre-configured priority for a VPLMN and considering the VPLMN as a lowest priority in response to determining that the UE has entered a state and the second SOR information is not received before the UE enters the state or the received second SOR information security check is not successful. The method includes considering a priority of the VPLMN as the pre-configured priority by not considering the VPLMN as a lowest priority and stopping the timer associated with the “first SOR security check not successful” in response to determining that the UE receives the second SOR information and a second SOR security check is successful before the UE enters the state.

Abstract: The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. Specifically, the disclosure related to a method for handling unavailability period collision in a wireless network (1000) by a network apparatus (200). The method includes identifying that a collision occurs between a network slice specific authentication and authorization (NSSAA) procedure and a registration procedure. Further, the method includes in case that a registration request message for the registration procedure includes information on an unavailable period, aborting the NSSAA procedure.

Abstract: A method and system for re-enabling a N1 mode capability for 3rd generation partnership project (3GPP) access in a user equipment (UE) are provided. The method includes determining that the UE supports an access to a standalone non-public network (SNPN), identifying that N1 mode capability is disabled in the UE, determining first validity information associated with the SNPN, and re-enabling the N1 mode capability upon determining that the first validity information associated with the SNPN changes from not met to met.

Abstract: A method and systems for managing registration of user equipment (UE) during disaster roaming conditions are provided. The method includes receiving, by a network node of a secondary public land mobile network (PLMN), an indication about a termination of a disaster condition, from a primary PLMN, wherein the secondary PLMN provides disaster roaming services to the UE in an evolved packet system (EPS) during the disaster condition in fifth generation system, and transmitting, by the network node to the UE, a non-access stratum (NAS) message that includes radio access technology (RAT) utilization control information and a predefined reject cause prompting the UE to re-attach to the primary PLMN over the 5GS, upon receipt of the indication.

Abstract: A method performed by a user equipment (UE) for access barring during disaster roaming in a communication network system is provided.

Abstract: An example a method for managing paging restrictions in a wireless network includes detecting, by a UE, whether a first subscriber identity module (SIM) is configured for a dedicated data subscription (DDS). The method further includes detecting, by the UE, an occurrence of a trigger condition in connection with at least one of the first SIM and at least one second SIM and enabling, by the UE, a paging restriction to the at least one second SIM based on the occurrence of the predetermined trigger condition.

Abstract: The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. Specifically, the disclosure related to method and apparatus for a network slice access management for a user equipment in a wireless communication system. The method includes receiving, from an access and mobility management function (AMF) entity, temporary slice related information for a first single network slice selection assistance information (S-NSSAI). Further, the method includes identifying whether the first S-NSSAI is available or not available. Further, the method includes transmitting, to the AMF entity, a registration request message including a second S-NSSAI based on the identification. Further, the registration request message does not include the first S-NSSAI.

Abstract: The disclosure relates to a fifth generation (5G) or sixth generation (6G) communication system for supporting a higher data transmission rate. A method and system for handling slice replacement in a communication network system are provided. The method includes receiving by the user equipment (UE) Single Network Slice Selection Assistance Information (S-NSSAI) time validity information for Single Network Slice Selection Assistance Information (S-NSSAI) from the first network apparatus. The method includes detecting by the UE that the S-NSSAI time validity information indicates that the S-NSSAI is available. The method includes locally removing by the UE the entry of at least one of a replaced S-NSSAI, an alternative S-NSSAI from an alternative NSSAI, or an S-NSSAI from allowed NSSAI or partially allowed NSSAI when the S-NSSAI time validity information indicates that the S-NSSAI is not available. The entry includes S-NSSAI corresponding to the replaced S-NSSAI or the alternative S-NSSAI.

Abstract: The present disclosure relates to the field of network slicing in wireless communication. In accordance with an aspect of the disclosure, a method performed by an access and mobility function (AMF) entity is provided. The method includes receiving, from a user equipment (UE), a registration request including a requested network slice selection assistance information (NSSAI); transmitting, to a Network Slice Admission Control Function (NSACF) entity, a request for determination of an availability of a number of UEs based on the registration request; and in case that a rejection for the request is received from the NSACF, transmitting, to the UE, information on a back-off timer.