Method and apparatus for assigning network address prefix

    公开(公告)号:US12074797B2

    公开(公告)日:2024-08-27

    申请号:US18034796

    申请日:2021-09-27

    IPC分类号: H04L45/42 H04L45/748

    CPC分类号: H04L45/748 H04L45/42

    摘要: Embodiments of the present disclosure provide methods and apparatuses for assigning network address prefix. A method performed by a control plane function may comprise: receiving, from a terminal device, a request for assigning a network address prefix; determining whether the network address prefix is assigned by the control plane function or a user plane function; transmitting, to the user plane function, a PFCP Session Modification Request for requesting the user plane function to assign the network address prefix, if it is determined that the network address prefix is assigned by the user plane function; receiving, from the user plane function, a PFCP Session Modification Response including an assigned network address prefix; and transmitting the assigned network address prefix to the terminal device. The specific procedure for the terminal device to obtain the network address prefix from a network entity not directly requested by the terminal device may be defined.

    Method and apparatus for assigning network address prefix

    公开(公告)号:US12003419B2

    公开(公告)日:2024-06-04

    申请号:US18034796

    申请日:2021-09-27

    IPC分类号: H04L45/42 H04L45/748

    CPC分类号: H04L45/748 H04L45/42

    摘要: Embodiments of the present disclosure provide methods and apparatuses for assigning network address prefix. A method performed by a control plane function may comprise: receiving, from a terminal device, a request for assigning a network address prefix; determining whether the network address prefix is assigned by the control plane function or a user plane function; transmitting, to the user plane function, a PFCP Session Modification Request for requesting the user plane function to assign the network address prefix, if it is determined that the network address prefix is assigned by the user plane function; receiving, from the user plane function, a PFCP Session Modification Response including an assigned network address prefix; and transmitting the assigned network address prefix to the terminal device. The specific procedure for the terminal device to obtain the network address prefix from a network entity not directly requested by the terminal device may be defined.

    TRANSFERRING MONITORING EVENT INFORMATION DURING A MOBILITY PROCEDURE

    公开(公告)号:US20240147313A1

    公开(公告)日:2024-05-02

    申请号:US18406742

    申请日:2024-01-08

    IPC分类号: H04W36/00 H04W8/20 H04W36/24

    摘要: Methods and systems for transferring monitoring event information during a mobility procedure are provided. According to one aspect, a method for transferring monitoring event information during a mobility procedure comprises, at a first network node: receiving and storing subscription information indicating that a second network node has subscribed to get notification when there is a data delivery failure involving a User Equipment (UE), followed by the UE becoming reachable; detecting a data delivery failure involving the UE, and setting a flag to indicate that a data delivery failure involving the UE has occurred; receiving, from a third network node, a mobility related request; sending, to the third network node, a response to the mobility related request, comprising an indication that the third network node should notify the second network node when the UE becomes reachable and/or when then UE enters the IDLE state.

    Restoration of a PDN connection at PGW failure

    公开(公告)号:US11870854B2

    公开(公告)日:2024-01-09

    申请号:US18026844

    申请日:2021-09-20

    发明人: Yong Yang

    CPC分类号: H04L67/141 H04L61/4511

    摘要: A method of operation of a cellular communications system is disclosed. The method comprises: at a MME: receiving an attach request from a UE; sending a location update request to a HSS; receiving a location update acknowledgement; sending, to a DNS, a DNS query request comprising an APN FQDN; receiving a DNS query response comprising information that indicates candidate PGWs that satisfy the DNS query request and at least two PGWs belonging to a same PGW set; selecting the first PGW; sending, to a SGW, a first create session request that comprises information that indicates the first PGW; receiving a first create session response; sending an attach accept to the UE; and at the SGW: receiving the first create session request from the MME; forwarding the first create session request to the first PGW; receiving the first create session response; and forwarding the first create session response to the MME.