Abstract: The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. Embodiments herein provide a method for handling a RPLMN during a disaster situation in a wireless network by a UE. In an embodiment, the method includes selecting RPLMN as PLMN with the disaster condition for accessing the disaster roaming services in response to determining that the RPLMN is included in a list of PLMNs with disaster condition for which disaster roaming services is offered by another PLMN and is allowable. In another embodiment, the method includes skipping the RPLMN and determining a PLMN with disaster condition for acessing the disaster roaming services in response to determining that the at least one PLMN is not included in the list of PLMNs with the disaster condition for which disaster roaming services is offered by the another PLMN or is not allowable.

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. A method performed by a base station in a wireless communication system includes identifying that a user equipment (UE) is out of a coverage of a satellite due to a discontinuous coverage (DC), and transmitting, to a network entity managing a mobility of the UE, a UE context release request message including a cause value for a UE context release.

Abstract: Methods and/or systems for providing packet data network (PDN) connectivity in a satellite communication network. An example method may include storing, by a mobility management entity (MME)-onboard entity, a PDN connectivity request at a first time instance, on the MME-onboard entity receiving the PDN connectivity request from a user equipment (UE). A method may include processing, by the MME-onboard entity, a PDN connectivity procedure based on the PDN connectivity request, on the MME-onboard entity establishing a feeder link and obtaining a connection with a ground core network (CN) entity. A method may include obtaining, by the MME-onboard entity, a response corresponding to the PDN connectivity procedure from an MME-ground entity. A method may include implementing, by the MME-onboard entity, the PDN connectivity procedure based on the PDN connectivity procedure being initiated by the UE at a second time instance.

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 5G or 6G communication system for supporting a higher data transmission rate. Disclosed is a method performed by a User Equipment, UE, in a telecommunication network, comprising the steps of: receiving, from a network entity, a Network Slice Access Group, NSAG, information; determining whether there is a Single-Network Slice Selection Assistance Information, S-NSSAI, entry which is in the NSAG information, which is not part of a configured NSSAI; and removing, from the NSAG information, any S-NSSAI entry which is in the NSAG information nad is not part of the configured NSSAI.

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: A method performed by a user equipment (UE) is provided. The method includes registering to a non-terrestrial network (NTN), storing information that a registered public land mobile network (RPLMN) corresponds to the NTN, triggering a network search procedure, and in response to the triggering of the network search procedure, in case that the stored information indicates that the RPLMN corresponds to the NTN, searching for a terrestrial network (TN) instead of searching for the NTN for the network search procedure.

Abstract: A method and a system for selecting Non-Terrestrial Networks (NTNs) in communication networks are provided. The method includes prioritizing a random terrestrial network (TN) over other NTNs, changing the scan pattern to accommodate combination of Bands, radio access technologies (RATS), and public land mobile networks (PLMNs), and pre-configuring PLMN priorities at the user equipment (UE).

Abstract: The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. A method of handling a User Equipment (UE) Radio Capability (URC) Identification (URC-ID) assignment procedure is provided.

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: Disclosed is a method of operating a User Equipment, UE, where the UE is in a non-allowed area, or the UE is not in an allowed area and wherein the UE wishes to request User Plane, UP, resources for a Protocol Data Unit, PDU, in a Non-Access Stratum, NAS, message, the UE includes a specified Information Element, IE, only when the UP resources are for a PDU session for emergency service and wherein the specified IE only indicates a PDU session ID associated with emergency access.

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 disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. A first access and mobility management function (AMF) receives, from a user equipment (UE), a registration request message including information regarding a public land mobile network (PLMN) with a disaster condition, wherein the information regarding the PLMN with the disaster condition indicates a PLMN of the UE which has faced the disaster condition, stores the information regarding the PLMN with the disaster condition included in the registration request message as a part of a UE context, receives, from a second AMF, a UE context transfer request message, and transmits, to the second AMF, a UE context transfer response message in response to the UE context transfer request message, the UE context transfer response message comprising the UE context.