Abstract: The present disclosure relates to user plane bearer setup methods and devices to switch data from a control plane solution to a user plane solution. In one example method, a serving gateway receives indication information sent by a mobility management entity, and allocates an identifier to a bearer according to the indication information to set up an S1 interface user plane bearer.

Abstract: An information processing method applied to an electronic device includes monitoring whether the target application is abnormal in response to a target application being started when the electronic device is in a target display mode, and in response to the target application being abnormal, switching a window of the target application from a first window display mode to a second window display mode such that the target application adapts to a target display mode. In the target display mode, the window of the target application is in the first window display mode indicated by the target display mode.

Abstract: A data migration method and an apparatus are applied to a scenario in which a user plane gateway communicating with a terminal is changed from a source user plane gateway to a target user plane gateway. The target user plane gateway receives an address of the terminal from a control plane gateway, obtains an Ethernet data packet based on the address of the terminal, and sends the Ethernet data packet to an Ethernet interface, so that a switch obtains the Ethernet data packet through the Ethernet interface, and updates a MAC address table based on the Ethernet data packet.

Abstract: Systems, methods, and instrumentalities are disclosed for an access control and mobility management function (AMF) node, comprising a processor configured to receive a N2 session management (SM) information from a session management function (SMF) node, wherein the N2 SM information indicates an available area for N2 information, receive a service request from a wireless transmit receive unit (WTRU), determine whether to update the N2 SM information based on a location of the WTRU and the available area for N2 information, wherein if the WTRU is outside of the available area for N2 information, the processor is configured to request a second N2 SM information from the SMF node and update the N2 SM information with the second N2 SM information, and send an N2 request with the N2 SM information to an access network associated with the WTRU.

Abstract: A wireless transmit/receive unit (WTRU) may establish one or more protocol data unit (PDU) sessions via a radio access network (RAN) node. The WTRU may transition to an inactive state. The WTRU may send a connection resume message to a RAN node that indicates a request to resume the established plurality of PDU sessions via the RAN node. The WTRU may receive a message from the RAN node. For example, the RAN node may send a message indicating a subset of the plurality of PDU sessions that are available upon resuming a connection with the RAN node. The WTRU may deactivate at least one established PDU session of the plurality of PDU sessions based on the received message from the RAN node that indicates at least one established PDU session not being included in the subset of the plurality of PDU sessions that are available.

Abstract: A data migration method and an apparatus are applied to a scenario in which a user plane gateway communicating with a terminal is changed from a source user plane gateway to a target user plane gateway. The target user plane gateway receives an address of the terminal from a control plane gateway, obtains an Ethernet data packet based on the address of the terminal, and sends the Ethernet data packet to an Ethernet interface, so that a switch obtains the Ethernet data packet through the Ethernet interface, and updates a MAC address table based on the Ethernet data packet.

Abstract: A method and a system are disclosed for providing session continuity in a 5G system. A wireless transmit receive unit (WTRU) may receive, from a session management function (SMF), a first Non-Access Stratum (NAS) message indicating a Packet Data Unit (PDU) session re-establishment. Upon receiving the first NAS message, the WTRU may determine an old PDU session ID based on the NAS message and generate a new PDU session ID. The WTRU may transmit a second NAS message indicating a PDU session establishment request. The second NAS message may include the old and new PDU session IDs. Upon receiving the PDU session establishment request, the SMF may determine that the old PDU session ID is associated with an existing PDU session for which the PDU session re-establishment is requested. The SMF may also determine that the new PDU session ID is associated with a new PDU session to be established.

Abstract: Systems, methods, and instrumentalities are disclosed for an access control and mobility management function (AMF) node, comprising a processor configured to receive a N2 session management (SM) information from a session management function (SMF) node, wherein the N2 SM information indicates an available area for N2 information, receive a service request from a wireless transmit receive unit (WTRU), determine whether to update the N2 SM information based on a location of the WTRU and the available area for N2 information, wherein if the WTRU is outside of the available area for N2 information, the processor is configured to request a second N2 SM information from the SMF node and update the N2 SM information with the second N2 SM information, and send an N2 request with the N2 SM information to an access network associated with the WTRU.

Abstract: Systems, methods, and instrumentalities are disclosed for determining corresponding quality of service (QoS) information that are utilized in a first network for different data associated with a second network. The data may include control plane data and user plane data. A wireless transmit/receive unit (WTRU) may send a request to the first network to establish a first session with the first network for transmission of the data associated with a second network. The WTRU may receive one or more QoS mapping rules. The one or more QoS mapping rules may include information for mapping a first QoS indication to a packet comprising control plane data associated with the second network and information for mapping a second QoS indication to a packet comprising user plane data associated with the second network. The WTRU may use the one or more QoS mapping rules to determine a QoS indication for a packet.

Abstract: A method and a system are disclosed for providing session continuity in a 5G system. A wireless transmit receive unit (WTRU) may receive, from a session management function (SMF), a first Non-Access Stratum (NAS) message indicating a Packet Data Unit (PDU) session re-establishment. Upon receiving the first NAS message, the WTRU may determine an old PDU session ID based on the NAS message and generate a new PDU session ID. The WTRU may transmit a second NAS message indicating a PDU session establishment request. The second NAS message may include the old and new PDU session IDs. Upon receiving the PDU session establishment request, the SMF may determine that the old PDU session ID is associated with an existing PDU session for which the PDU session re-establishment is requested. The SMF may also determine that the new PDU session ID is associated with a new PDU session to be established.

Abstract: Embodiments of this application provide a downlink data transmission method and apparatus. The method includes: receiving, by a user plane device, downlink data of a terminal, sending, by the user plane device, the downlink data by using a shared bearer to an access network device that is in a tracking area of the terminal, receiving, by the access network device, a context setup request message sent by a control plane device, setting up, by the access network device, a radio bearer between the access network device and the terminal based on the context setup request message, and sending, by the access network device, the downlink data to the terminal by using the radio bearer. In this way, a downlink data transmission delay is reduced and downlink data transmission efficiency is improved.

Abstract: The present disclosure relates to user plane bearer setup methods and devices to switch data from a control plane solution to a user plane solution. In one example method, a serving gateway receives indication information sent by a mobility management entity, and allocates an identifier to a bearer according to the indication information to set up an S1 interface user plane bearer.

Abstract: Methods, systems, and apparatuses for protocol data unit (PDU) session management over different access technologies (ATs) are disclosed. A wireless transmit/receive unit (WTRU) may receive a first message from a network over a first access technology. The first message may include an indication for the WTRU to reestablish resources for one or more protocol data unit (PDU) sessions over a second access technology. The WTRU may determine that a PDU session of the one or more PDU sessions is locally deactivated by the WTRU. The WTRU may determine that it is in a limited service state associated with the second access technology. The WTRU may send a second message via the first access technology. The second message may include a PDU session status information element (IE) indicating the PDU session is locally deactivated such that the network releases the PDU session.

Abstract: The present disclosure relates to a mobile edge platform switching method. In one example method, an application identity of a source application instance is received by a second mobile edge platform from a first mobile edge platform. The first mobile edge platform provides a service for the source application instance. The source application instance provides a service for a user equipment. A target application instance of the user equipment is determined based on the application identity. The application identity of the source application instance is the same as an application identity of the target application instance. The second mobile edge platform provides a service for the target application instance. A switching notification message is sent by the second mobile edge platform to the target application instance. The switching notification message is used to instruct the target application instance to provide a service for the user equipment.

Abstract: This application discloses example user plane bearer setup methods and devices, so as to switch data from a control plane solution to a user plane solution. According to one example method in this application, a serving gateway receives indication information sent by a mobility management entity, and allocates an identifier to a bearer according to the indication information, so as to set up an S1 interface user plane bearer. Data can be switched from the control plane solution to the user plane solution through setup of the user plane bearer.

Abstract: A routing rule obtaining method, device, and system are provided. The method is applied to an MEC system and performed by a data bus controller, including: obtaining service information of at least one service in the MEC system, where service information of each service includes a service type and a service identity; generating a routing rule according to the service information of the at least one service, where the routing rule is used to indicate at least one path through which a data packet can pass; and sending the routing rule to a data bus, so that the data bus forwards, according to the routing rule, a received data packet to a service corresponding to the data packet. The service information of each service is dynamically obtained, so as to update a path indicated in a routing rule.

Abstract: Systems, methods, and instrumentalities are disclosed for an access control and mobility management function (AMF) node, comprising a processor configured to receive a N2 session management (SM) information from a session management function (SMF) node, wherein the N2 SM information indicates an available area for N2 information, receive a service request from a wireless transmit receive unit (WTRU), determine whether to update the N2 SM information based on a location of the WTRU and the available area for N2 information, wherein if the WTRU is outside of the available area for N2 information, the processor is configured to request a second N2 SM information from the SMF node and update the N2 SM information with the second N2 SM information, and send an N2 request with the N2 SM information to an access network associated with the WTRU.

Abstract: A wireless transmit/receive unit (WTRU) may establish one or more protocol data unit (PDU) sessions via a radio access network (RAN) node. The WTRU may transition to an inactive state. The WTRU may send a connection resume message to a RAN node that indicates a request to resume the established plurality of PDU sessions via the RAN node. The WTRU may receive a message from the RAN node. For example, the RAN node may send a message indicating a subset of the plurality of PDU sessions that are available upon resuming a connection with the RAN node. The WTRU may deactivate at least one established PDU session of the plurality of PDU sessions based on the received message from the RAN node that indicates at least one established PDU session not being included in the subset of the plurality of PDU sessions that are available.

Abstract: Method and an apparatus for determining a bearer for mobile edge computing are disclosed. A Mobile Edge Computing (MEC) can obtain a data packet that includes an end marker. The MEC can obtain a bearer identifier and an identifier of UE in a handover procedure according to the data packet that includes the end maker, and requests information about the second bearer from a node of a second bearer. The request can include the bearer identifier of the UE and the identifier of the UE. The node of the second bearer can return a response message and information regarding the second bearer according to the request. The MEC can receive the response message and store the information regarding the second bearer according to the identifier of the UE and the bearer identifier of the UE.

Abstract: Embodiments of the present invention disclose a bearer handover control device and control method. The method includes: receiving, by a network side device, a bearer handover message; and determining, by the network side device according to the bearer handover message, a bearer needing to be handed over in all bearers, so that an end marker End Marker message is sent to a source base station only for the bearer needing to be handed over. By using the foregoing solutions, for a multi-connection scenario, a network side device can determine a bearer needing to be handed over, so that an end marker message is sent only for the bearer needing to be handed over, which can prevent discarding of subsequent data of a bearer that is not to be handed over, and ensure multiple connections between a UE and base stations, thereby improving stability of a system.