Device and method for handling always-on PDU session in wireless communication system

    公开(公告)号:US11909828B2

    公开(公告)日:2024-02-20

    申请号:US17766525

    申请日:2020-09-29

    CPC classification number: H04L67/142 H04W60/00 H04W84/042

    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). According to various embodiments of the disclosure, provided is a method for operating an access and mobility management function (AMF) in a wireless communication system, comprising the steps of: receiving, from user equipment (UE), a service request including a list of protocol data unit (PDU) sessions to be activated, or a message about a mobility registration update; checking, on the basis of UE context information about the UE, whether identifiers (IDs) of all of always-on PDU sessions are included in the list of PDU sessions to be activated; and, when an omitted always-on PDU session is checked from the list of the PDU sessions to be activated, transmitting, to a session management function (SMF), a Nsmf_PDUSession_UpdateSMContext request message for requesting user plane activation of the omitted always-on PDU session.

    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 apparatus for using NAS message for data protection

    公开(公告)号:US12250550B2

    公开(公告)日:2025-03-11

    申请号:US17710846

    申请日:2022-03-31

    Inventor: Kyungjoo Suh

    Abstract: A method, performed by a user equipment (UE), for protecting data includes: transmitting an attach request message including at least one security protection parameter regarding a UE capability to support a security protection for a user plane, to a mobility management entity (MME) via a base station; and in case that a security policy is determined at a policy charging function (PCF) based on the attach request message and information of the security policy is received at the MME, receiving an attach accept message including at least one security protection parameter regarding a network capability for the security policy related with an evolved packet system (EPS) bearer, from the MME via the base station.

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