Abstract: A handover method, performed by a source base station in a wireless communication system, includes: receiving an indicator indicating a start of packet duplication transmission of a user plane function (UPF); and transmitting at least one redundant packet to a target base station, based on the indicator indicating the start of the packet duplication transmission of the UPF, wherein the packet duplication transmission includes transmitting, to the target base station, a packet that is identical to a packet transmitted by the UPF to the source base station, wherein the redundant packet includes a packet that was received from the UPF before the start of the packet duplication transmission but is not transmitted to a User Equipment (UE) and stored.

Abstract: A method and apparatus for discovering and selecting a network that provides connectivity for transmitting user subscription data is provided. A user equipment (UE) in a wireless communication system includes a transceiver and at least one processor configured to identify preconfigured first information comprising a first list, the first list comprising at least one identifier (ID) of at least one network group providing an initial access to a non-public network (NPN), receive, from at least one base station via the transceiver, second information comprising at least one second list, the at least one second list comprising at least one ID of at least one network group which is supported by the at least one base station and provides an initial access to the NPN, and select a network to be initially accessed from a network group corresponding to at least one ID included in the first list and the at least one second list, based on the first information and the second information.

Abstract: The present disclosure relates 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). The embodiments in the present disclosure allow to transfer remaining data between different base stations in a dual-registration interworking process, which provides terminal mobility between 4G and 5G networks without a data loss. Further, it provides the terminal mobility with no data loss without changing 5G and 4G base station implementation through addition of a simple function of new equipment, such as SMF and UPF. Further, it supports different QoS and forwarding path units in the 5G/4G networks without changing 5G and 4G base station functions. Further, it exempts additional function implementation costs for re-ordering in a terminal and a network through in-order delivery of packets to the terminal without changing the packet order during 4G-5G network movement.

Abstract: The disclosure relates to a 5th generation (5G) or pre-5G communication system to support a higher data rate after a 4th generation (4G) communication system such as long term evolution (LTE). Various embodiments provide a method for operating a terminal in a wireless communication system, the method including: transmitting a PDU session establishment request message to a network node; receiving a PDU session establishment accept message from the network node; and determining a PDU session as an always-on PDU session for an URLLC service.

Abstract: A method, performed by a network entity, of performing time sensitive communication (TSC) includes: establishing a first protocol data unit (PDU) session with a first user equipment (UE) and a second PDU session for a second UE; receiving, from the first UE, an announce message obtained from a first time sensitive network (TSN) node; configuring, based on the announce message, a port state of the network entity; and transmitting, to the second UE or a second TSN node, the announce message.

Abstract: The present disclosure relates to a 5th (5G) generation) or pre-5G communication system for supporting a higher data transmission rate beyond a 4th (4G) generation communication system such as long term evolution (LTE). According to various embodiments of the present disclosure, an apparatus of a user data management (UDM) for a first cellular network in a wireless communication system may include at least one transceiver, and at least one processor operatively coupled with the at least one transceiver, the at least one processor may be configured to receive a request message for security of a second cellular network from an access and mobility management function (AMF) for the first cellular network, and transmit to the AMF a response message for transmitting a security key for an eNB of the second cellular network to the eNB, and the security key may be obtained from the base security key of the second cellular network.

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. The disclosure provides a method and a device for a group management that enables addition/deletion/replacement of a group member in a group-based event monitoring method.

Abstract: The present disclosure relates 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). The embodiments in the present disclosure allow to transfer remaining data between different base stations in a dual-registration interworking process, which provides terminal mobility between 4G and 5G networks without a data loss. Further, it provides the terminal mobility with no data loss without changing 5G and 4G base station implementation through addition of a simple function of new equipment, such as SMF and UPF. Further, it supports different QoS and forwarding path units in the 5G/4G networks without changing 5G and 4G base station functions. Further, it exempts additional function implementation costs for re-ordering in a terminal and a network through in-order delivery of packets to the terminal without changing the packet order during 4G-5G network movement.

Abstract: The disclosure relates to a 5th generation (5G) or pre-5G communication system for supporting a higher data transmission rate than a 4th generation (4G) communication system such as Long Term Evolution (LTE). According to various embodiments, there is provided an operating method of an application function (AF) in a wireless communication system that includes: transmitting, to a network exposure function (NEF), a Nnef_EventExposure_Subscribe message including an address of a user equipment (UE) to request a subscription of a user plane function (UPF) event exposure service for the UE; and receiving, from the NEF, a Nnef_EventExposure_Notify message including information on the UPF event exposure service for the UE.

Abstract: Disclosed is a 5th generation (5G) or pre-5G communication system for supporting a data transmission rate higher than that of a 4th generation (4G) communication system such as long term evolution (LTE).

Abstract: A method for setting a value of an inactivity timer for transitioning between states of a data session in a network comprising a first entity and a second entity providing network analytics is provided. The method includes obtaining, by the second entity, input data comprising communication description information for at least one user equipment (UE), and providing, by the second entity to the first entity, output analytics generated based on the input data, the output analytics comprising UE communications analytics for each data session where the output analytics are used to determining whether to update a value of an inactivity timer for a data session.

Abstract: The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. In accordance with an aspect of the disclosure, a method for providing localized service by a policy control function (PCF) in a wireless communication system, the method comprises receiving, from a localized service provider (LSP), first information including at least one of quality of service (QoS) profiles for different users, and information for time of service, and transmitting, to an access and mobility management function (AMF), second information related to authentication of the at least one user equipment (UE) which is connecting for the localized service.

Abstract: The present disclosure relates to: a communication technique merging IoT technology with a 5th generation (5G) or pre-5G communication system for supporting a data transmission rate higher than that of a 4th generation (4G) communication system such as long term evolution (LTE); and a system therefor. The present disclosure can be applied to intelligent services (for example, smart homes, smart buildings, smart cities, smart cars or connected cars, healthcare, digital education, retail, security- and safety-related services, and the like) on the basis of 5G communication technology and IoT-related technology. According to various embodiments of the present invention, a method and device for requesting packet delay status by using an UPF event exposure service be provided.

Abstract: A method performed by an application function (AF) in a wireless communication system is provided. The method includes receiving, from a session management function (SMF), a late notification message indicating a change of a data network access identifier (DNAI), identifying whether an AF change is needed based on the late notification message, and transmitting, to the SMF, a response message including information for change to a target AF for a target DNAI based on a result of identifying that the AF change is needed.

Abstract: The present invention relates to a communication system and method for merging, with IoT technology, a 5G communication system for supporting a data transmission rate higher than that of a 4G system. The present invention provides a system and method by which a user equipment (UE) transmits, to an access and mobility management function (AMF), a first message including information related to a network slice in a first authentication, and receives, from the AMF, a third message including a result of a second authentication, wherein whether to require the second authentication is determined by the AMF based on the information and subscription information, and wherein the second authentication between the UE and a server is triggered based on the determination.

Abstract: The present disclosure relates 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). An operating method of a policy control function (PCF) node in a wireless communication system, according to various embodiments of the present disclosure, comprises the steps of: determining, on the basis of preset conditions, whether to transmit a user equipment (UE) policy; transmitting a message including the UE policy; and receiving information related to a result of a policy section (PS) operation performed by a UE on the basis of the UE policy.

Abstract: A method of performing communication, by a network exposure function (NEF), in a wireless communication system is provided. The method includes receiving a connection establishment request from a session management function (SMF), based on a protocol data unit (PDU) session establishment procedure performed between the SMF and a user equipment (UE), performing a non-internet protocol (IP) data delivery (NIDD) configuration procedure according to NIDD configuration information included in the connection establishment request, based on whether the NIDD configuration procedure is previously performed on the UE between the NEF and an application function (AF), establishing connection between the SMF and the NEF, and transmitting a connection establishment response to the SMF.

Abstract: Provided are a method and apparatus for supporting migration of mobile edge computing in a wireless communication system.

Abstract: The disclosure relates to a communication technique and system for converging a 5G communication system for supporting higher data rates beyond a 4G system with an IoT technology. The disclosure relates to a wireless communication system, and more particularly, to a method and an apparatus for providing a local area data network service based on a non-subscription model in a cellular wireless communication system (5G system).

Abstract: A method performed by an application function (AF) in a wireless communication system is provided. The method includes receiving, from a session management function (SMIF), a late notification message indicating a change of a data network access identifier (DNAI), identifying whether an AF change is needed based on the late notification message, and transmitting, to the SMIF, a response message including information for change to a target AF for a target DNAI based on a result of identifying that the AF change is needed.