Abstract: A policy transmission method, a policy control function (PCF) network element, and a computer storage medium, where the method includes: obtaining, by a PCF network element, a connection management state of a terminal apparatus, where the connection management state includes a connected mode or an idle mode; and sending, by the PCF network element, policy rule information to the terminal apparatus when the connection management state of the terminal apparatus is the connected mode.

Abstract: Embodiments of this application relate to a multipath data transmission processing method and a network device. A first network device receives a packet from a first host device, and determines a first connection identifier between the first network device and a second network device based on the packet. The first network device encapsulates the packet based on the first connection identifier. The first network device sends the encapsulated packet to the second network device through one of a plurality of subflows between the first network device and the second network device. According to the embodiments of this application, multipath data transmission is implemented, a data transmission rate is increased, and a host device does not perceive a plurality of paths. The embodiments of this application can be applied to any existing communications system.

Abstract: Embodiments of the present application relate to the wireless communications field, and in particular, to a session management method and a session management network element. The session management method includes: receiving, by a first control plane network element, a user equipment UE context response message from a second control plane network element, where the UE context response message carries a first session message, and the first session message is a pending session message; and sending, by the first control plane network element, a second session message to user equipment according to the UE context response message. According to the session management method and the session management network element in the embodiments of the present application, a session can be managed in a scenario in which a control plane connection of user equipment changes.

Abstract: A method includes receiving, by a session management function (SMF), first information from an access and mobility management function (AMF), obtaining, by the SMF, protocol data unit (PDU) session management subscription information from a unified data management (UDM) module, and when dynamic policy and charging control (PCC) is not deployed, establishing, by the SMF based on the first information and at least one of the PDU session management subscription information and local PDU session policy information of the SMF, a default GBR QoS flow in the PDU session.

Abstract: A method for implementing service continuity, performed by a session management (SM) function (SMF) network element may include receiving a target relocation message, the target relocation message carrying target traffic routing information, the target traffic routing information comprising a target data network (DN) access identifier (DNAI) and network address translation (NAT) information, the NAT information comprising a target user equipment (UE) network address, a first application server (AS) network address, and a second AS network address, wherein a target UE corresponding to the target UE network address has established a target protocol data unit (PDU) session to a first PDU session anchor (PSA) user plane function (UPF) network element and is configured to communicate with a first AS corresponding to the first AS network address.

Abstract: Embodiments of this application provide a multicast communication method and related apparatus. The multicast communication method is implemented by a user equipment and includes receiving UE route selection policy (URSP) information transmitted by a policy control function entity, the URSP information including a URSP rule supporting a multicast service; querying the URSP rule supporting the multicast service according to a multicast network address corresponding to a multicast service context that needs to be activated, to obtain network slice information and data network name information; and activating Multicast and Broadcast Service (MBS) context information of the user equipment based on the network slice information and the data network name information, adding the user equipment to a multicast group corresponding to the multicast network address for multicast communication.

Abstract: A method includes determining whether a user equipment activating a multicast service is to establish a Protocol Data Unit session and acquire an Internet Protocol (IP) address assigned by a Session Management Function (SMF) entity, and activating the multicast service for the user equipment through the SMF entity based on the determination.

Abstract: Embodiments of this application provide a time synchronization method and apparatus, a computer-readable medium, and an electronic device. The time synchronization method includes: receiving a triggering delivery service request message transmitted by an application function (AF) entity, the triggering delivery service request message including an identifier of a target user equipment and a time sensitive network (TSN) trigger container, the TSN trigger container being used for indicating a TSN time synchronization trigger condition; and transmitting a submission triggering message to a short message service-service center (SMS-SC), the submission triggering message being used for requesting the SMS-SC to transmit a short message including the TSN trigger container to the target user equipment, to enable the target user equipment to perform a TSN time synchronization operation based on the TSN trigger container.

Abstract: A quality of service (QoS) control method and a device, where the method includes: a session management function (SMF) entity obtaining service data flow (SDF)-level QoS control information; the SMF entity sending the SDF-level QoS control information to a terminal; and the terminal performing QoS control on an uplink data packet based on the SDF-level QoS control information, or the terminal deleting the SDF-level QoS control information. The terminal can perform the QoS control on the uplink data packet based on the SDF-level QoS control information.

Abstract: A service discovery method, a registration center, and a device, where the method includes: receiving, by a registration center, a service discovery request sent by a first device, where the service discovery request carries target parameter information of a service needed by the first device, and where the target parameter information includes at least one of information about a first transmission mode, information about an invocation mode, information about a transmission protocol, or information about a second transmission mode; determining, by the registration center based on a service parameter database, a target service corresponding to the target parameter information, where the service parameter database is used to store parameter information of different services of a second device; and sending, by the registration center, a service response message to the first device, where the service response message includes description information of the target service.

Abstract: Disclosed are a communication method and apparatus based on edge computing, a computer storage medium, and an electronic device. The communication method based on edge computing includes: receiving an uplink Internet Protocol (IP) packet transmitted by a user equipment, a destination address of the uplink IP packet being a network address of a target application server; determining a network address of a local edge server that is configured to respond to the uplink IP packet according to the network address of the target application server; and modifying the destination address of the uplink IP packet to the network address of the local edge server, and forwarding the modified uplink IP packet to the local edge server for processing.

Abstract: This disclosure provides a method and an apparatus for implementing network capability exposure, an electronic device, and a computer-readable storage medium, belonging to communication technologies. The method includes: obtaining a downlink data packet, the downlink data packet including a network information obtaining request; transmitting the downlink data packet to a target user plane node; and receiving responsive information returned by the target user plane node in response to the network information obtaining request, the responsive information including network information requested by the network information obtaining request.

Abstract: A time synchronization process may include receiving a time sensitive network (TSN) configuration creation request that includes an identifier of a target user equipment (UE) and a trigger condition. The request is transmitted by an application function entity (AF). A TSN authorization request is transmitted to a unified data management entity (UDM) and is used for requesting the UDM to transmit, after confirming authorization, a TSN activation request to an access and mobility management function entity (AMF) registered by the target UE. Control signaling used for performing a TSN time synchronization operation is transmitted to the target UE.

Abstract: Time synchronization between communication devices may be necessary for proper communications. The time synchronization may include determining a first target Session Management Function of a first terminal based on first target Single Network Slice Selection Assistance Information, a first target Data Network Name, first identity information, and first type indication information of a first time-sensitive network grandmaster clock by using a Network Repository Function. A first target label information may be obtained from a Unified Data Manager based on the first target Single Network Slice Selection Assistance Information, the first target Data Network Name, the first identity information, and the first type indication information of the first time-sensitive network grandmaster clock.

Abstract: Embodiments of this application provide a policy control function network element selection method, an apparatus, a system, and a storage medium The method includes: A first access and mobility management function network element receives a registration request message of the terminal device; obtains, based on an identifier of the terminal device in the registration request message, an identifier of a policy control function network element currently serving the terminal device and a network identifier of the policy control function network element; and when a network identifier of the first access and mobility management function network element is consistent with the network identifier of the policy control function network element, determines that the policy control function network element is a target policy control function network element.

Abstract: In an access and mobility management policy association termination method, a first access and mobility management function apparatus sends first policy control function identifier information of a first policy control function apparatus to a second access and mobility management function apparatus, and sends first deletion request information to the first policy control function apparatus. The first deletion request information is for requesting the first policy control function apparatus to delete an access and mobility management (AM) policy association between the first policy control function apparatus and the first access and mobility management function apparatus for a terminal device. Both the first access and mobility management function apparatus and the first policy control function apparatus then delete AM policy control information for the terminal device.

Abstract: A quality of service (QoS) control method and a device, where the method includes: a session management function (SMF) entity obtaining service data flow (SDF)-level QoS control information; the SMF entity sending the SDF-level QoS control information to a terminal; and the terminal performing QoS control on an uplink data packet based on the SDF-level QoS control information, or the terminal deleting the SDF-level QoS control information. The terminal can perform the QoS control on the uplink data packet based on the SDF-level QoS control information.

Abstract: A data transmission method in which a UE initiates a TSC communication request to establish a TSC transmission channel between a first UE and a second UE is provided.

Abstract: This specification discloses a communication method, and a system. The method includes: receiving, by a first control network element, analysis information of a network data analytics network element NWDA, and generating a policy based on the analysis information; sending, by the first control network element, the policy to a second control network element, where execution of the policy is controlled by the second control network element; receiving, by the first control network element, an execution result of the policy that is sent by the second control network element, and determining, based on the execution result, whether the analysis information is invalid; and sending, by the first control network element, an invalidity notification message to the NWDA when the first control network element determines that the analysis information is invalid, where the invalidity notification message is used to instruct the NWDA to generate new analysis information.

Abstract: A session establishment method and apparatus are provided. The method includes: determining, by a first network device, whether an air interface resource of a default flow of a PDU session is successfully established; and if the air interface resource of the default flow of the PDU session fails to be established, the first network device, based on first information, establishes the PDU session in an inactive state or triggers to release the PDU session, where the first information is used to indicate whether establishment of the PDU session in the inactive state is allowed when the air interface resource of the default flow of the PDU session fails to be established.