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: Disclosed are techniques for registering a user equipment (UE) to a new access and mobility management function (AMF). When a new access and mobility management function (AMF) determines that an old AMF is disjoint AMF i.e. they are not connected, then the new AMF fetches the UE context (5GMM and SGSM context) from the old AMF via new generation radio access network (NG-RAN). The new AMF routes a Namf_Communication_UEContextTransfer request message to the old AMF to fetch the UE contexts via NG-RAN. The old AMF sends the UE contexts in the Namf_Communication_UEContextTransfer response message to the new AMF via NG-RAN. Based on the context transfers between the new AMF and the old AMF, the UE is registered to the new AMF.

Abstract: A RAN node includes means for receiving a N2 message containing a list of S-NSSAI of the congested network slice from an AMF and means for sending the list of S-NSSAI and a wait timer for each S-NSSAI in the list in first AN signaling message to an UE when receiving, from the UE, second signaling message containing the list of S-NSSAI to establish an AN signaling connection, the S-NSSAI being indicated in the N2 message as congested by the AMF.

Abstract: This disclosure is related to a procedure to provide emergency services support for a UE which does not have a valid subscription for the serving PLMN. This disclosure more specifically provides procedure to support IMS emergency call or eCall support for a UE which is in limited state on a E-UTRA cell is connected to both EPC and 5GCN.

Abstract: This disclosure defines a procedure to handle threat related to replaying of a SUCI in the 5G system. More specifically how to detect and mitigate the man in the middle base station replaying a captured SUCI to trace the UE.

Abstract: A method for managing a Closed Access Group (CAG) feature using an Access and Mobility Management Function (AMF) server. The method includes receiving a registration request message from a User Equipment (UE) for registering for a CAG subscription. The method includes determining that the UE is subscribed to access the network through a CAG cell only. The method includes determining whether the registration request message includes a CAG support indicator. The method includes determining whether the UE supports the CAG feature based on the CAG support indicator. The method includes sending either a registration accept message including a CAG information list to the UE when the UE supports the CAG feature, or a registration reject message including a 5GMM cause value other than a 5GMM cause #76 to the UE when the UE does not support the CAG feature.

Abstract: A method performed by Access and Mobility Management Function, AMF (800) for handling of network slice specific authentication and authorization procedure, is disclosed. In an embodiment, a network shall restart a generic UE configuration update procedure when the network encounters radio link failure before completion of the ongoing generic UE configuration update procedure. In another embodiment, the network sends CONFIGURATION UPDATE COMMAND message containing the Allowed NSSAI when a N1 NAS signaling connection is established after the radio link failure.

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: This disclosure is related to a procedure to provide emergency services support for a UE which does not have a valid subscription for the serving PLMN. This disclosure more specifically provides procedure to support IMS emergency call or eCall support for a UE which is in limited state on a E-UTRA cell is connected to both EPC and 5GCN.

Abstract: This disclosure defines a procedure to handle authentication procedure during Xn handover. More specifically it defines handling of an authentication procedure when Xn handover takes place from one serving PLMN to another serving PLMN during the authentication procedure.

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: A procedure to establish latest security key in a UE and a network is disclosed. More specifically, the procedure defines various method to establish latest Kausf in the UE and the network and make the UE and network uses the same Kausf in various security procedure.

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). Disclosed is a method of performing Network Slice-Specific Authentication and Authorization, NS SAA, in a telecommunication network, for at least one network slice, such that a given user is able to access the at least one network slice, S-NSSAI, comprising the step of performing NSSAA after a specified time period, T, has elapsed.

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: Accordingly, embodiments herein disclose a method for handling a closed access group (CAG) related procedure in a wireless communication system. A network may receive a radio resource control (RRC) resume request message from a user equipment (UE). The network may determine whether the at least one CAG identifier (ID) broadcasted in a CAG cell is included in an allowed CAG list of the UE (100) in response to the RRC resume request message. The network may proceed with a RRC resume procedure in response to determining that the at least one CAG ID is included in the allowed CAG list.

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. Accordingly the embodiments herein provides a method and system for ciphering of initial NAS message protection procedure. A UE is registered to a first PLMN and a first 5G NAS security context has been established. The UE selects a second PLMN. The UE sends Initial Registration procedure with only cleartext IE to the second PLMN. The second PLMN may initiate and perform authentication procedure.

Abstract: A communication device for handling an interworking procedure comprises at least one processing circuit configured to execute instructions of registering to a fifth generation (5G) system (5GS) network and establishing at least one Protocol Data Unit (PDU) session of a PDU session type to a Data Network (DN) identified by a first Data Network Name (DNN) and connected to the 5GS network; selecting a cell of an Evolved Packet System (EPS) network, after establishing the at least one PDU session; determining whether the at least one PDU session is supported in the EPS network; determining whether the cell supports an attach without any packet data network (PDN) connection; and initiating an attach procedure on the cell, when determining that none of the at least one PDU session is supported in the cell and the cell does not support the attach without any PDN connection.

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 synchronizing a temporary identity in the UE and the network when the UE is RRC Inactive state over 3GPP access and temporary identity of the UE is changed over a Non-3GPP access in a scenario when the UE is connected to the same AMF via 3GPP and non-3GPP access.