METHOD AND APPARATUS FOR REASSIGNMENT OF ACCESS AND MOBILITY MANAGEMENT FUNCTION IN COMMUNICATION SYSTEM

    公开(公告)号:US20240214902A1

    公开(公告)日:2024-06-27

    申请号:US18557177

    申请日:2022-04-22

    CPC classification number: H04W36/385 H04W12/033 H04W36/0038 H04W60/00

    Abstract: A method for carrying out AMF reassignment in a communication system may comprise the steps of: transmitting, to an NSSF, a first request message including at least one of a first parameter for requesting a public key of an AMF that is to be reassigned and a second parameter for requesting a token related to the AMF that is to be reassigned; receiving, from the NSSF, a first response message including at least one of information indicating a target AMF set, and a public key of the target AMF set or the token; generating, on the basis of first security context for user equipment, an SC container including second security context for a target AMF; encrypting the SC container by using the public key; and transmitting, to the target AMF via a radio access network related to the user equipment, at least one of the encrypted SC container, additional information related to encryption of the SC container, and the token.

    METHOD AND DEVICE FOR AUTHENTICATING NETWORK ACCESS REQUEST THROUGH TERMINAL-TO-TERMINAL CONNECTION IN MOBILE COMMUNICATION SYSTEM

    公开(公告)号:US20240163666A1

    公开(公告)日:2024-05-16

    申请号:US18282670

    申请日:2022-04-20

    CPC classification number: H04W12/06 H04W12/041 H04W12/0431

    Abstract: The present disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. A method performed by an access and mobility management function (AMF) in a wireless communication system according to an embodiment of the present disclosure comprises: receiving, from a relay user equipment (UE) for a UE-network relay communication, a relay key request message including an identifier of a remote UE for the UE-network relay communication; identifying whether the relay UE is authorized to provide a UE-network relay service; identifying an authentication server function (AUSF) related to the remote UE, based on the identifier of the remote UE; transmitting, to the AUSF, an authentication request message including the identifier of the remote UE; in case that an authentication procedure for the remote UE based on the identifier of the remote UE is successfully performed, acquiring a proximity-based services (ProSe) session encryption key established between the remote UE and the relay UE; and transmitting, to the relay UE, the ProSe session encryption key.

    METHOD AND DEVICE FOR TERMINAL ATTACHING AND CREATING HOME-ROUTED PDU SESSION IN ROAMING ENVIRONMENT SUPPORTING NETWORK SLICE

    公开(公告)号:US20220353797A1

    公开(公告)日:2022-11-03

    申请号:US17860778

    申请日:2022-07-08

    Abstract: The present disclosure relates to a 5G or pre-5G communication system for supporting a data transmission rate higher than that of a 4G communication system such as LTE. According to one embodiment of the present invention, a method in a roaming environment supporting a network slice is provided. The method comprises the steps of: receiving, from a terminal, a first packet data unit (PDU) session request message including slice assistance information indicating the properties of a service the terminal intends to use; transmitting, to a network function (NF) repository function, a first discovery request message including a home public land mobile network (PLMN) ID of the terminal and the slice assistance information; and receiving, from the NF repository function, a first discovery response message including a session management network function (SM NF) address of the home PLMN. The SM NF is selected on the basis of the slice assistance information.

    METHOD FOR KEEPING MOBILE INITIATED CONNECTION ONLY MODE USER EQUIPMENT IN CONNECTED MODE

    公开(公告)号:US20220287148A1

    公开(公告)日:2022-09-08

    申请号:US17827043

    申请日:2022-05-27

    Abstract: The present disclosure relates to a communication technique for converging an IoT technology with a 5G communication system for supporting a higher data transfer rate beyond a 4G system, and a system therefor. The present disclosure can be applied to an intelligent service (e.g. a smart home, a smart building, a smart city, a smart car or connected car, healthcare, digital education, a retail business, a security and safety-related service, etc.) on the basis of a 5G communication technology and an IoT-related technology. The present disclosure provides a method wherein, after a MICO mode terminal establishes a connection and transmits data, the MICO mode terminal can be kept in a connected mode state, rather than entering an idle mode, in order to provide for a case where slightly delayed response traffic occurs according to the type of application or service.

    METHOD AND DEVICE FOR CONNECTING CAPABILITY EXPOSURE FUNCTION AND NETWORK FUNCTIONS

    公开(公告)号:US20210258769A1

    公开(公告)日:2021-08-19

    申请号:US16341829

    申请日:2017-09-29

    Abstract: Disclosed is a communication technique for merging, with IoT technology, a 5G communication system for supporting a data transmission rate higher than that of a 4G system, and a system therefor. The disclosure can be applied to intelligent services (for example, smart home, smart building, smart city, smart car or connected car, health care, digital education, retail, security, and safety related services, and the like) on the basis of 5G communication technology and IoT related technology. The present invention presents a method for connecting, with each network function defined in a fifth generation mobile communication network, a capability exposure function (CEF) having a function of exposing context of a terminal to a third party in a mobile communication network so as to provide management of the terminal or a mobility event for the terminal.

    REGISTRATION MANAGEMENT METHOD FOR TERMINAL ACCESSING 5G NETWORK ON NON-3GPP ACCESS

    公开(公告)号:US20210258718A1

    公开(公告)日:2021-08-19

    申请号:US17306453

    申请日:2021-05-03

    Abstract: A communication technique of fusing a fifth generation (5G) communication for supporting higher data transmission rate beyond a fourth generation (4G) system with an Internet of things (IoT) technology and a system thereof is provided. The technique may be applied to an intelligent service (smart home, smart building, smart city, smart car or connected car, health care, digital education, retail business, security and safety related service, or the like) based on the 5G communication technology and the IoT related technology. A method is provided for effectively managing a registration state for a terminal in a 5G core network such as an access and mobility management function (AMF) in a situation of accessing a 5G network via a non-3rd generation partnership project (3GPP) access.

    METHOD AND APPARATUS FOR CONNECTING A TERMINAL TO NETWORK BASED ON APPLICABLE NETWORK INFORMATION IN MOBILE COMMUNICATION SYSTEM

    公开(公告)号:US20200304989A1

    公开(公告)日:2020-09-24

    申请号:US16893864

    申请日:2020-06-05

    Abstract: A communication technology for converging a 5th-generation (5G) communication system for supporting a higher data rate after a 4th-generation (4G) system to an Internet of things (IoT) technology and a system thereof are provided. A method for connecting to a network by a terminal in a mobile communication system wherein a first communication network and a second communication network are operable, and an apparatus thereof are provided. The method includes transmitting, to a mobility management function, information on supportable communication network for the terminal and an attach request message including a packet data unit (PDU) session request, receiving an internet protocol (IP) address allocated based on the information on supportable communication network and an attach accept message including a PDU session response, and connecting to a network based on the IP address.

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