Abstract: Embodiments of the present disclosure disclose a session management method and an apparatus. The technology is specifically related to sending, by user equipment, a NAS message to an AGF, where the NAS message includes a PDU session establishment request message used to request to establish a PDU session, receiving, by the user equipment, a PDU session establishment accept message returned by a network side device, and establishing, by the user equipment, an access session with the AGF, where the access session is an access session related to the PDU session. The user equipment sends the NAS message to establish the PDU session, and establishes the access session with the AGF.

Abstract: A session management method and an apparatus, where the method includes: obtaining, by a session management function (SMF), a point-to-point protocol over Ethernet (PPPoE) message from a user equipment; assigning a PPPoE session identifier and/or an Internet Protocol (IP) address to the user equipment; and sending, by the SMF, the assigned PPPoE session identifier and/or IP address to the user equipment, to establish a PPPoE connection between the user equipment and a network side device. The method is performed after a packet data unit (PDU) session is successfully established. The SMF sends the PPPoE session identifier and/or the IP address to the user equipment. In this case, the user equipment can store a correspondence between the established PDU session and a PPPoE session, such that the user equipment accesses a 5G core network (CN) through a fixed network.

Abstract: In a method for network communications, a session management network element receives an identifier of a session of a terminal device, an identifier of a port corresponding to the session, and a processing policy of a data flow for the port. The session management network element determines, according to the identifier of the port, a type of a first device corresponding to the port. The session management network element then sends, according to the determined type of the first device, processing policy information to the first device. The processing policy information comprises the identifier of the port and the processing policy of the data flow.

Abstract: Embodiments of the present disclosure disclose a session management method and an apparatus. The technology is specifically related to sending, by user equipment, a NAS message to an AGF, where the NAS message includes a PDU session establishment request message used to request to establish a PDU session, receiving, by the user equipment, a PDU session establishment accept message returned by a network side device, and establishing, by the user equipment, an access session with the AGF, where the access session is an access session related to the PDU session. The user equipment sends the NAS message to establish the PDU session, and establishes the access session with the AGF. Because the access session is related to the PDU session, the user equipment can map the PDU session to the access session, so that the user equipment accesses a 5G CN through a fixed network.

Abstract: A session management method and an apparatus, where the method includes: obtaining, by a session management function (SMF), a point-to-point protocol over Ethernet (PPPoE) message from a user equipment; assigning a PPPoE session identifier and/or an Internet Protocol (IP) address to the user equipment; and sending, by the SMF, the assigned PPPoE session identifier and/or IP address to the user equipment, to establish a PPPoE connection between the user equipment and a network side device. The method is performed after a packet data unit (PDU) session is successfully established. The SMF sends the PPPoE session identifier and/or the IP address to the user equipment. In this case, the user equipment can store a correspondence between the established PDU session and a PPPoE session, such that the user equipment accesses a 5G core network (CN) through a fixed network.

Abstract: A device access method includes obtaining, by a mobility management entity, an identifier of a remote device and an identifier of a relay device, determining, by the mobility management entity based on at least one of the identifier of the remote device or the identifier of the relay device, to allow the remote device to access the network using the relay device, and sending, by the mobility management entity, a registration success message to the remote device using the relay device.

Abstract: An information transmission method and an apparatus, where the method includes: determining, by an application function network element, an association relationship of a port pair corresponding to a protocol data unit (PDU) session; determining delay information of the port pair; and sending port pair information to a time sensitive networking (TSN) system, where the port pair information includes the association relationship of the port pair and the delay information of the port pair. In the embodiments of this application, attribute information of a virtual switching node can be obtained and reported in a 5th generation (5G) system, such that a TSN system plans a transmission path of a TSN flow on the virtual switching node and a network resource for the transmission path.

Abstract: A time-sensitive networking communication method and an apparatus, where the method may include: receiving, by a policy control network element, forwarding policy information of time sensitive networking (TSN) traffic; triggering the policy control network element to manage a quality of service (QoS) flow corresponding to the TSN traffic; determining a user terminal corresponding to the TSN traffic; determining, in a QoS flow corresponding to the user terminal, the QoS flow corresponding to the TSN traffic; creating or updating, according to the forwarding policy information, a QoS policy of the QoS flow corresponding to the TSN traffic; and sending the QoS policy to a session management network element, where the forwarding policy information includes traffic information of the TSN traffic and an identifier of a port that transmits the TSN traffic.

Abstract: A method includes receiving, by an access gateway device, a fixed network packet included in a first fixed network session. The fixed network packet includes fixed network session characteristic information useable to identify the fixed network packet. The method further includes sending, by the access gateway device, the fixed network packet to a user plane function network element based on information of a first interface corresponding to the fixed network session characteristic information. The first interface is an interface between the access gateway device and the user plane function network element. The method further includes receiving, by the user plane function network element, the fixed network packet.

Abstract: A time-sensitive networking communication method and an apparatus. where the method may include: determining, by an application function network element, a virtual switching node identifier corresponding to a port identifier of a user plane function network element; determining a virtual port identifier of a virtual switching node identified by the virtual switching node identifier; obtaining attribute information of the virtual switching node, where the attribute information includes attribute information of a port identified by the port identifier of the user plane function network element and attribute information of a virtual port identified by the virtual port identifier; and sending the attribute information of the virtual switching node to a time-sensitive network, where the attribute information of the virtual switching node is used to request the time-sensitive network to register or update the virtual switching node based on the attribute information of the virtual switching node.

Abstract: A device access method includes obtaining, by a mobility management entity, an identifier of a remote device and an identifier of a relay device, determining, by the mobility management entity based on at least one of the identifier of the remote device or the identifier of the relay device, to allow the remote device to access the network using the relay device, and sending, by the mobility management entity, a registration success message to the remote device using the relay device.

Abstract: A quality of service monitoring method, system, and a device, where the quality of service monitoring method includes: obtaining, by a first device, information about a first transmission delay for packet transmission between the first device and a second device for a terminal; sending, by the first device, the information about the first transmission delay to a third device; and sending, by the first device at a first moment, information related to the first moment to the third device, where the information about the first transmission delay and the information related to the first moment are used to determine information about a second transmission delay for packet transmission between the second device and the third device for the terminal.

Abstract: Example communication methods and apparatus are described. One example method includes determining a first encapsulation identifier corresponding to an Ethernet session by a control plane network element and sending the first encapsulation identifier corresponding to the Ethernet session to a user plane network element, where the first encapsulation identifier is used to instruct the user plane network element to process a data packet corresponding to the Ethernet session based on the first encapsulation identifier. The terminal device determines the first encapsulation identifier corresponding to the Ethernet session and encapsulates an uplink data packet based on the first encapsulation identifier, where the uplink data packet is a data packet triggered by an application program bound to the Ethernet session. The encapsulated data packet is mapped to the Ethernet session corresponding to the first encapsulation identifier for transmission based on the first encapsulation identifier.

Abstract: A communication method includes: determining, based on first indication information and second indication information, a transmit end and a receive end that communicate with each other by using a data flow, to indicate that a first device is the transmit end and the second indication information is used to indicate that a second device is the receive end, or to indicate that the first device is the receive end and the second indication information is used to indicate that the second device is the transmit end; obtaining, bandwidth information of the data flow; and sending, data flow information and the bandwidth information to indicate at least one of a port identifier of the transmit end and a port identifier of the receive end, and the port identifier of the transmit end, the port identifier of the receive end, and the bandwidth information are used to create the data flow.

Abstract: In an embodiment, a session management function (SMF) network element obtains first information identifying a data stream, where the first information is used to instruct a transmit end to send a user stream using the data stream and to instruct a receive end to receive the user stream using the data stream; and the receive end is an access network element, and the transmit end is a user plane function network element, or vice versa; the SMF network element sends the first information to the user plane function network element and/or the access network element; the SMF network element obtains second information, where the second information is used to indicate a forwarding rule of transmitting the user stream by the user plane function network element on a data network side; and the SMF network element sends the second information to the user plane function network element.

Abstract: A multicast group creation method, a multicast group joining method, and an apparatus, where the multicast group creation method includes: a user multicast source terminal sending a first request message to a first control plane network element to request creation of a multicast group; the first control plane network element sending a second request message to a second control plane network element to request creation of the multicast group; the second control plane network element determining that a next-hop user plane network element of the second user plane network element is a first user plane network element, and then sending information about the first user plane network element to the first control plane network element, which indicates the second user plane network element to send a multicast packet received from the terminal to the first user plane network element.

Abstract: A method includes receiving, by an access gateway device, a fixed network packet included in a first fixed network session. The fixed network packet includes fixed network session characteristic information useable to identify the fixed network packet. The method further includes sending, by the access gateway device, the fixed network packet to a user plane function network element based on information of a first interface corresponding to the fixed network session characteristic information. The first interface is an interface between the access gateway device and the user plane function network element. The method further includes receiving, by the user plane function network element, the fixed network packet.

Abstract: A device access method includes obtaining, by a mobility management entity, an identifier of a remote device and an identifier of a relay device, determining, by the mobility management entity based on at least one of the identifier of the remote device or the identifier of the relay device, to allow the remote device to access the network using the relay device, and sending, by the mobility management entity, a registration success message to the remote device using the relay device.

Abstract: Embodiments of the present invention disclose a session management method and an apparatus. The method includes: obtaining, by an SMF, a PPPoE message sent by user equipment, and assigning a PPPoE session identifier and/or an IP address to the user equipment; and sending, by the SMF, the assigned PPPoE session identifier and/or IP address to the user equipment, to establish a PPPoE connection between the user equipment and a network side device. The method is performed after a PDU session is successfully established. The SMF sends the PPPoE session identifier and/or the IP address to the user equipment. In this case, the user equipment can store a correspondence between the established PDU session and a PPPoE session, so that the user equipment accesses a 5G CN through a fixed network.

Abstract: Embodiments of the present disclosure disclose a session management method and an apparatus. The technology is specifically related to sending, by user equipment, a NAS message to an AGF, where the NAS message includes a PDU session establishment request message used to request to establish a PDU session, receiving, by the user equipment, a PDU session establishment accept message returned by a network side device, and establishing, by the user equipment, an access session with the AGF, where the access session is an access session related to the PDU session. The user equipment sends the NAS message to establish the PDU session, and establishes the access session with the AGF. Because the access session is related to the PDU session, the user equipment can map the PDU session to the access session, so that the user equipment accesses a 5G CN through a fixed network.