APPARATUS AND METHOD FOR SUPPORTING SESSION CONTINUITY IN WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20240137816A1

    公开(公告)日:2024-04-25

    申请号:US18491142

    申请日:2023-10-19

    CPC classification number: H04W36/0011 H04W36/00 H04W36/14

    Abstract: A method performed by a user equipment (UE) in a wireless communication system is provided. The method includes transmitting, to an access and mobility function (AMF), a registration request message for moving to a first public land mobile network (PLMN) from a second PLMN, receiving, from the AMF, a registration accept message including first single-network slice selection assistance information (S-NSSAI) corresponding to the first PLMN of the AMF, determining whether second S-NSSAI associated with a protocol data unit (PDU) session established for the UE matches to the first S-NSSAI, wherein the second S-NSSAI corresponds to the second PLMN, and locally updating the PDU session based on a result of the determining.

    METHOD AND DEVICE FOR TRANSMITTING DATA IN WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20240089789A1

    公开(公告)日:2024-03-14

    申请号:US18514987

    申请日:2023-11-20

    CPC classification number: H04W28/0268 H04W28/24 H04W36/0044 H04W36/14

    Abstract: The disclosure relates to a method and apparatus for monitoring and changing information about quality of service (QoS) allowed to be supported to a user equipment (UE) in a mobile communication system, and an operating method of a target base station (BS) in the mobile communication system includes receiving, from a source BS, alternative quality of service (QoS) profile (AQP) information, determining whether information matching QoS information allowed to be supported for a UE to be served is included in the AQP information, and when the information matching the QoS information allowed to be supported for the UE to be served is included in the AQP information, transmitting the matching information to an access and mobility management function (AMF).

    METHOD AND APPARATUS FOR REGISTERING WITH NETWORK SLICE IN WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20230239826A1

    公开(公告)日:2023-07-27

    申请号:US18190718

    申请日:2023-03-27

    CPC classification number: H04W60/005 H04W48/16 H04W8/02

    Abstract: A method of a network function (NF) entity performing communication in a wireless communication system includes: in case that a first registration request of a user equipment (UE) for a slice is received at an access and mobility function (AMF) entity through a first network, receiving a first slice availability request message for the slice from the AMF entity; determining whether the slice is available for the UE, based on a network slice policy; and transmitting, to the AMF entity, a response message including information regarding slice availability of the UE according to the first registration request, wherein in case that a second registration request of the UE for the slice is received at the AMF entity through a second network, slice availability of the UE according to the second registration request is determined based on at least one of the network slice policy or the information regarding the slice availability of the UE according to the first registration request.

    COMMUNICATION METHOD AND DEVICE IN WIRELESS COMMUNICATION SYSTEM SUPPORTING NETWORK SLICING

    公开(公告)号:US20230199570A1

    公开(公告)日:2023-06-22

    申请号:US17926411

    申请日:2021-05-21

    CPC classification number: H04W36/0011 H04W76/18 H04W36/14

    Abstract: The present disclosure relates to a communication method and device in a wireless communication system supporting network slicing, and, according to an embodiment of the present disclosure, a method performed by a terminal in a wireless communication system supporting network slicing comprises steps in which: a terminal transmits a session establishment request message for a first network slice through a first access network; a session establishment rejection message is received through the first access network from a network entity for managing a session for the first network slice; and handover to a second access network, which is the preferred access network of the terminal, is determined if the session establishment rejection message includes, as the cause of rejection of the session establishment request, information that indicates the number of sessions exceeding the maximum number of sessions for the first network slice.

    APPARATUS AND METHOD FOR PROVIDING INTERWORKING OF NETWORK SLICES IN WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20230145595A1

    公开(公告)日:2023-05-11

    申请号:US18153582

    申请日:2023-01-12

    CPC classification number: H04W76/11 H04W8/20 H04W12/06 H04W48/18 H04W84/12

    Abstract: A method of selecting, by a control entity, a network slice is provided. The method includes receiving a create session request message from a Serving Gateway (S-GW) in response to a Packet Data Network (PDN) connectivity request message transmitted by a terminal, transmitting, to a storage entity, a request message for subscriber information including identification information of the terminal, receiving, from the storage entity, subscription data of the terminal corresponding to the identification information of the terminal, selecting at least one network slice based on the subscription data of the terminal and slice information supportable by the control entity, and transmitting a create session response message including information of the selected at least one network slice, wherein the subscription data of the terminal includes information about a subscribed network slice of the terminal and information regarding whether the subscribed network slice of the terminal is supported in an Evolved Packet Core (EPC).

    METHOD AND APPARATUS FOR MANAGING REGISTRATION OF NETWORK SLICE IN WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20230109814A1

    公开(公告)日:2023-04-13

    申请号:US18045132

    申请日:2022-10-07

    Abstract: A method performed by an access and mobility management function (AMF) in a wireless communication system may include: transmitting, to a network slice admission control function (NSACF), a request message for a slice availability check including information regarding an access type of a user equipment (UE), based on a registration request of the UE for one or more single network slice selection assistance information (S-NSSAI); in case that the slice availability check is performed for the one or more S-NSSAIs at the NSACF, based on the access type of the UE, receiving a response message including information regarding a result of the slice availability check, from the NSACF; and transmitting a registration response for the one or more S-NSSAIs to the UE, based on the response message.

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