Abstract: A method for performing a Network Slice Specific Authentication Authorization (NSSAA) procedure for a network slice is disclosed. The method includes performing, by a Network Slice Specific Authentication and Authorization Function (NSSAAF), an NSSAA procedure through a first Access and Mobility Management Function (AMF) selected amongst the first AMF and a second AMF. The method includes determining, by the NSSAAF whether the NS SAA procedure through the first AMF is successful or not. The method includes performing by the NSSAAF, one of skipping the NSSAA procedure for the second AMF in response to determining that the NSSAA procedure is successful for the first AMF transmitting a message to the second AMF for deleting Network Slice Selection Assistance Information (NSSAI) related to the network slice from an allowed list of network slices in response to determining that the NSSAA procedure is unsuccessful for the first AMF.

Abstract: The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. Embodiments herein provide a method for continuity of modem service by a user equipment (UE). The method includes detecting modem restart at the UE (100). The method includes determining whether a wireless network (400) and the UE (100) supports a session and mobility management feature upon detecting the restart of the modem (150), and identifying SM-MM contexts used by the UE (100) for accessing the modem service upon determining that the wireless network entity (200) supports the session and the mobility management feature. The method includes transmitting a first signaling message comprising at least one of the SM context and the MM context to the wireless network entity (200) for the continuity of the modem service.

Abstract: Disclosed herein are a communication technique for merging, with an IoT technology, a 5G communication system for supporting a data transmission rate higher than that of a 4G system; and a system therefor. Embodiments herein disclose a method of protecting sensitive user plane traffic in an User Equipment (UE) (100), the method comprising: transmitting, to a network (200), by the UE (100) a first NAS message comprising an indicator indicating that the UE (200) supports of a secure channel for domain name system (DNS); receiving, from the network (200), by the UE (100) a second NAS message including DNS server security information in response to transmitting the first NAS message; and transmitting, to the network (200), by the UE (100) the DNS over the secure channel based on the DNS server security information.

Abstract: The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. Methods and systems for handling network slice admission control for User Equipment (UE) are provided. The disclosure relates to network slicing and more particularly, to a system and method of ensuring that a communication system is able to accurately enforce quota on the maximum number of UEs concurrently registering for a network slice defined by a Single Network Slice Selection Assistance Information (S-NSSAI). The disclosure describes how the limits of “Number of Terminals” configured for an S-NSSAI may be accurately maintained in a Network Slice Admission Control Function (NSACF), and thus the enforcement may be performed when the limit is really exhausted. The disclosure also describes that a deregistration notification from a Unified Data Management (UDM) may act as a trigger for an old Mobility Management Function (AMF) to decrement counts in the NSACF as the old AMF is no longer serving the UE.

Abstract: The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. Embodiments herein disclose a method for providing restricted service access in a wireless network by a first network entity (i.e., target AMF entity (400)). The method includes requesting a NRF entity (600) to grant an access-token to access a second network entity (i.e., initial AMF entity (300)). Further, the method includes receiving a message comprising a restricted service access to the second network entity based on the access-token. Further, the method includes sending a restricted UE context transfer request to the second network entity based on the message comprising the restricted service access. Further, the method includes receiving a UE context transfer response from the second network entity based on the restricted UE context transfer request.

Abstract: Disclosed herein are a communication technique for merging, with an IoT technology, a 5G communication system for supporting a data transmission rate higher than that of a 4G system; and a system therefor. Embodiments herein disclose a method of protecting sensitive user plane traffic in an User Equipment (UE) (100), the method comprising: transmitting, to a network (200), by the UE (100) a first NAS message comprising an indicator indicating that the UE (200) supports of a secure channel for domain name system (DNS); receiving, from the network (200), by the UE (100) a second NAS message including DNS server security information in response to transmitting the first NAS message; and transmitting, to the network (200), by the UE (100) the DNS over the secure channel based on the DNS server security information.

Abstract: The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. Embodiments herein disclose methods for performing network function (NF) management and discovery in a wireless network. The method includes receiving, by a network repository function (NRF) device, a first registration request to register common data in a separate profile from a first NF instance entity, and receiving, by the NRF device, a second registration request to register an NF instance profile from the first NF instance entity. The NF instance profile includes NF instance specific data and a pointer for a profile of the common data.

Abstract: In accordance with an embodiment of the disclosure, a method performed, by an access and mobility management function (AMF), in a wireless communication system, the method comprising receiving, from a user equipment (UE) with a packet data network (PDN) connection established, a registration request message including a first single-network slice selection assistance information (S-NSSAI) associated with the PDN connection, determining a second S-NSSAI associated with a packet data unit (PDU) session corresponding to the PDN connection based on the first S-NSSAI, and transmitting an information regarding the second S-NSSAI to a user plane function (UPF) via a session management function (SMF) to request modification of N4 session.

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.

Abstract: The 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 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. According to various embodiments of the disclosure, methods and apparatuses for resolving paging occasion are provided.

Abstract: Embodiments herein provide a method for handling synchronization of Home Network (HN) security key(s) in a wireless network. The proposed method includes receiving a Non-access stratum (NAS) authentication request message from a network entity (200A), where the UE (100A) holds a first Home network (HN) security key. Further, the method includes determining an authentication response message for the received NAS authentication request message and generating a second HN security key from a plurality of input parameters received in the NAS authentication request message and sending authentication response message to the network entity (200A). Further, the method includes storing the second HN security key in response to receiving a NAS security mode command message from the network entity (200A) or ignore the second HN security key in response to receiving a NAS reject message from the network entity (200A).

Abstract: Embodiments herein provide a method and a wireless network device (100) for handing a paging cause of a service. The method includes receiving, by the wireless network device (100), a NAS message includes the paging cause of the service provided by the wireless network device (100) and a first value corresponding to the paging cause from a UE (200). The method includes modifying, by the wireless network device (100), the first value of the paging cause of the service to a second value, and sending a NAS response message to the UE (200), where the NAS response message includes the paging cause of the service and the second value of the paging cause. The second value enables the UE (200) to respond to a paging message based on the second value of the paging cause.

Abstract: The 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 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 disclosed herein includes storing, by a network, URC identifiers (IDs) against all Public Land Mobile Network-Identifiers (IDs) belonging to a same Tracking Area Identity (TAI) list in a UE context information.

Abstract: The present disclosure realtes to a pre-5th generation (5G) or 5G communication system to be provided for supporting higher data rates beyond 4th-generation (4G) communication system such as long term evolution (LTE). In an embodiment, a method, for managing an Authentication and Key Management for Applications (AKMA) service for a User Equipment (UE) in a communication system is disclosed. The method includes determining, by a network function, that the UE is not allowed to utilize the AKMA service, in response to detecting at least one condition associated with the UE. The method includes transmitting, by the network function, a request to an AKMA Anchor Function (AAnF) for deleting an AKMA context corresponding to the UE from a memory associated with the AAnF. The method includes deleting, by the AAnF, the AKMA context corresponding to the UE from the memory.

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. Embodiments herein disclose a system and method for configuring slice profile in a Fifth Generation (5G) network. The method comprises determining root slice profile from a Service Profile (101). Further, generating one or more subnet slice profiles (102) associated with corresponding one or more network domains of the 5G network from the root slice profile.

Abstract: In accordance with an embodiment of the disclosure, a method performed, by an access and mobility management function (AMF), in a wireless communication system, the method comprising receiving, from a user equipment (UE) with a packet data network (PDN) connection established, a registration request message including a first single-network slice selection assistance information (S-NSSAI) associated with the PDN connection, determining a second S-NSSAI associated with a packet data unit (PDU) session corresponding to the PDN connection based on the first S-NSSAI, and transmitting an information regarding the second S-NSSAI to a user plane function (UPF) via a session management function (SMF) to request modification of N4 session.

Abstract: The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. Embodiments of present disclosure relates to methods and network system for managing network slice in communication network. Management entity of network system detects UEs having inactive sessions and releases the inactive sessions for UEs. Management entity transmits notification to UEs and to AMF entity of network system indicating release of inactive sessions. Management entity also transmits a request to AMF entity requesting deregistration of UEs having inactive sessions. Further, AMF entity identifies presence of any active sessions for UEs through other management entities for access type corresponding to UEs. AMF entity upon identifying absence of active sessions, deregisters network slice for UEs having inactive sessions. Thereafter, NSACF entity of network system updates parameters associated with network slice for managing network slice.

Abstract: According to an embodiment of a present disclosure, a method performed by AKMA anchor function (AAnF) in a wireless communication system is provided. The method may include: receiving, from an application function (AF), a message for requesting authentication and key management for applications (AKMA) application key for a user equipment (UE); checking whether the AAnF provides AKMA service to the AF based on a local policy; and based on a result of the checking, determining whether to derive the requested AKMA application key for the 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 present disclosure discloses method and apparatus for handling a user equipment (UE) (100) with a closed access group (CAG) subscription in a wireless network by a first network device (200). The method comprises receiving a registration request from the UE (100); and transmitting, a first message to a second network device (300), in response to receiving the registration request, wherein the first message indicates a request to register with the second network device (300) on behalf of the UE (100), and whether the first network device (200) supports CAG feature.