Method for managing registration and session in wireless communication system and apparatus for performing the same

    公开(公告)号:US11671935B2

    公开(公告)日:2023-06-06

    申请号:US17181059

    申请日:2021-02-22

    CPC classification number: H04W60/06 H04W60/005 H04W88/02

    Abstract: A communication technique that combines a 5G communication system for supporting a data rate that is higher than that of a beyond 4G system with IoT technology, and a system thereof are provided. The technique may be applied to intelligent services on the basis of 5G communication technology and IoT related technology, such as smart home, smart building, smart city, smart car or connected car, health care, digital education, retail, etc. A method of performing access deregistration by a user equipment (UE) and an apparatus therefor are provided. The method includes, when the UE is registered on both 3rd generation partnership project (3GPP) access and non-3GPP access, transmitting, to an access and mobility management function (AMF), a deregistration request message to deregister the non-3GPP access over the 3GPP access, and receiving, from the AMF, a deregistration accept message corresponding to the deregistration request message over the 3GPP access.

    Method and device for providing local MBS in wireless communication system

    公开(公告)号:US11595988B2

    公开(公告)日:2023-02-28

    申请号:US17444821

    申请日:2021-08-10

    Abstract: The disclosure relates to a 5G or pre-5G communication system for supporting higher data transmission rates than 4G communication systems such as LTE systems. According to an embodiment, a method for receiving a multicast service by a UE in a wireless communication system comprises receiving, from an application function (AF), a multicast service announcement message including first information related to a local multicast and broadcast service (MBS), identifying that the UE is located in a local MBS area, and transmitting, to an access and mobility management function (AMF), a multicast session join request message for joining a multicast session for the local MBS, the multicast session join request message including second information corresponding to the first information.

    Apparatus and method for network security

    公开(公告)号:US11553383B2

    公开(公告)日:2023-01-10

    申请号:US16957373

    申请日:2019-01-11

    Abstract: The present disclosure relates to a 5th generation (5G) or pre-5G communication system for supporting a higher data transfer rate beyond a 4th generation (4G) communication system, such as long-term evolution (LTE). According to various embodiments of the present disclosure, a security method of a mobility management apparatus of a second system in a wireless environment may comprise the steps of: receiving a handover request for a terminal connected to a first system; transmitting the handover request to a base station of the second system; and receiving a handover ACK including security information generated by the base station of the second system and transmitting the same to the first system.

    Apparatus and method for network security

    公开(公告)号:US11503512B2

    公开(公告)日:2022-11-15

    申请号:US16957373

    申请日:2019-01-11

    Abstract: The present disclosure relates to a 5th generation (5G) or pre-5G communication system for supporting a higher data transfer rate beyond a 4th generation (4G) communication system, such as long-term evolution (LTE). According to various embodiments of the present disclosure, a security method of a mobility management apparatus of a second system in a wireless environment may comprise the steps of: receiving a handover request for a terminal connected to a first system; transmitting the handover request to a base station of the second system; and receiving a handover ACK including security information generated by the base station of the second system and transmitting the same to the first system.

    Method and device for terminal attaching and creating home-routed PDU session in roaming environment supporting network slice

    公开(公告)号:US11388656B2

    公开(公告)日:2022-07-12

    申请号:US16338554

    申请日:2017-10-10

    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, from SM NFs of a PLMN associated with the home PLMN ID.

    Method and apparatus for providing cellular IoT service in mobile communication system

    公开(公告)号:US11212866B2

    公开(公告)日:2021-12-28

    申请号:US16860624

    申请日:2020-04-28

    Abstract: Disclosed is a method performed by a terminal in a wireless communication system, including identifying, by an access stratum (AS) layer of the terminal, release assistance information (RAI), transmitting, to a base station, a control message associated with a radio resource control (RRC) connection, the control message including the RAI identified by the AS layer of the terminal, and transmitting uplink data to the base station, wherein the RAI indicates that no further data transmission is required or a single downlink data transmission subsequent to the uplink data is required, and wherein the uplink data is transmitted to a user plane function (UPF) entity via the base station.

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