Data transmission method, user equipment, and control plane node

    公开(公告)号:US11523274B2

    公开(公告)日:2022-12-06

    申请号:US16586373

    申请日:2019-09-27

    Abstract: Embodiments of the present disclosure relate to a data transmission method, user equipment, and a control plane node. User equipment (UE) determines a security attribute of a session of the UE; the UE sends a session establishment request message to a control plane node when the security attribute of the session of the UE does not meet a security requirement of an application. The session establishment request message is used to request to establish a session corresponding to the security requirement of the application. Embodiments of the disclosed method reduce an unnecessary signaling exchange caused by establishment of a new session in a data transmission process to facilitate meeting requirements of different services.

    Activating a packet data unit (PDU) session using downlink information

    公开(公告)号:US11470671B2

    公开(公告)日:2022-10-11

    申请号:US17066927

    申请日:2020-10-09

    Abstract: This application provides a communication method and apparatus, to resolve a problem that a PDU session of a terminal in an inactive mode fails to be activated. The method performed by a first core network device includes: sending first downlink information to a first RAN node, where the first downlink information is used by the first RAN node to activate a PDU session of a terminal, and the PDU session is in an inactive state; receiving indication information from the first RAN node, where the indication information indicates that the PDU session fails to be activated; and sending second downlink information to a second RAN node based on the indication information, where the second downlink information is used by the second RAN node to activate the PDU session of the terminal. This application relates to the field of communications technologies.

    Domain Name System Query Method and Communication Apparatus

    公开(公告)号:US20220174032A1

    公开(公告)日:2022-06-02

    申请号:US17675301

    申请日:2022-02-18

    Abstract: A domain name system query method in which: a first network element receives a DNS query request including a first domain name from a terminal apparatus; the first network element sends first request information which comprises location information of the terminal apparatus and the first domain name to a second network element; the second network element determines, based on the first request information, an IP address and feeds back the IP address to the first network element; and the first network element sends the IP address to the terminal apparatus. When a terminal apparatus performs domain name query, a core network element determines an IP address of an application server based on location information of the terminal apparatus and a queried domain name. In this way, the terminal apparatus obtains an IP address of an application server close to the terminal apparatus, thereby improving service access efficiency of the terminal apparatus.

    Policy control method and system, network element, and storage medium

    公开(公告)号:US11240711B2

    公开(公告)日:2022-02-01

    申请号:US16283198

    申请日:2019-02-22

    Inventor: Yongcui Li Hui Ni

    Abstract: Embodiments of the present disclosure relate to a policy control method and system, a network element, and a storage medium. A control plane network element establishes, for UE, a first DN connection that uses a first forwarding plane network element as an anchor. The method includes: when the control plane network element receives a handover notification message for the UE and determines that a second forwarding plane network element serves the UE, or when the control plane network element establishes, for the UE, a second DN connection that uses a second forwarding plane network element as an anchor, the control plane network element updates a forwarding path of the first DN connection, so that an updated forwarding path of the first DN connection passes through the second forwarding plane network element, and the second forwarding plane network element performs policy control on a packet on the first DN connection.

    Method and device for processing communication path

    公开(公告)号:US11233694B2

    公开(公告)日:2022-01-25

    申请号:US16276372

    申请日:2019-02-14

    Abstract: A method and a device for processing a communication path are provided. The method includes: obtaining a path processing parameter from local configuration information or from a control layer device, obtaining path information and/or a restarting counter parameter from the control layer device; increasing a path with an opposite-end device when the path information is of increasing a path, identifying the state of the path and/or the state of the opposite-end device using the path processing parameter and/or the restarting counter parameter the opposite-end device; reporting the fault state of the path and/or the reset state of the opposite-end device to the control layer device when the path fails and/or the opposite-end device is reset, releasing sessions on the failed path and/or on a path connected with the reset opposite-end device.

    Session Management Method, Apparatus, System, and Computer Readable Storage Medium

    公开(公告)号:US20210315054A1

    公开(公告)日:2021-10-07

    申请号:US17354106

    申请日:2021-06-22

    Abstract: Embodiments of this application provide a session management method, apparatus, and system. The method includes: receiving, by a first session management network element, a session request message from a second session management network element; allocating, by the first session management network element, Internet protocol IP information of a terminal device to a first session based on the session request message, where the first session is a branch of an established second session; and sending, by the first session management network element, the IP information of the terminal device to the second session management network element, where the IP information is used to obtain policy information corresponding to the IP information.

    Devices, systems and methods for accessing and providing network slices in a mobile communication network

    公开(公告)号:US11115918B2

    公开(公告)日:2021-09-07

    申请号:US16672275

    申请日:2019-11-01

    Abstract: The present disclosure relates to a user equipment-configured to use a plurality of communication services of a mobile communication network, wherein the plurality of communication services are provided by a plurality of network slice instances of the mobile communication network and wherein access to the plurality of network slice instances is controlled by a plurality of access and mobility management functions, AMFs, including a first AMF and a second AMF, implemented in the mobile communication network, wherein the user equipment is configured to register to the second AMF for using one or more of the communication services provided by the one or more network slices associated with the second AMF, while being registered to the first AMF for using one or more of the communication services.

    Method for processing information, forwarding plane device and control plane device

    公开(公告)号:US11115350B2

    公开(公告)日:2021-09-07

    申请号:US16530558

    申请日:2019-08-02

    Abstract: Embodiments of the present invention provide a method for processing information, a forwarding plane device and a control plane device. The method includes: receiving a data packet, and extracting the data packet's characteristic information; searching for context information corresponding to the data packet's characteristic information; buffering or discarding the data packet if the context information is not found; and sending an event reporting message to a gateway control plane device, wherein the event reporting message carries the data packet's characteristic information, so that the gateway control plane device acquires the context information corresponding to the data packet's characteristic information. forwarding of the data packet to the greatest extent.

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