Abstract: Embodiments of the present invention relate to field of communications technologies, and provide a mobility management method that can effectively ensure normal communication between user equipment and a base station without using an anchor device, and ensure service continuity between the user equipment and a communication peer. A specific solution is as follows: User equipment establishes a first substream with a communication peer; when the user equipment moves from a first base station to a second base station, and a second gateway and a first gateway are not the same gateway, the user equipment obtains a second IP address; after obtaining the second IP address, the user equipment establishes a second substream with the communication peer; after the second substream is established, the communication peer removes the first substream; and after the first substream is removed, the first gateway releases a network resource occupied for transmitting the first substream.

Abstract: This application provides a communications method and an apparatus. The communications method includes: receiving, by a first access and mobility management function network element in a first communications network, a first message from a terminal device, where the first message includes a non-access stratum (NAS) parameter used by the terminal device to access a second communications network; and sending, by the first access and mobility management function network element, a second message to a second access and mobility management function network element in the second communications network, where the second message includes the NAS parameter. Therefore, according to the embodiments of this application, the terminal device can access the second communications network through the first access and mobility management function network element in the first communications based on the NAS parameter.

Abstract: Embodiments of this application disclose a capability exposure method. The method may include obtaining, by an access network device, a request message from an application server, where the request message includes at least one of first time information or second time information, where the first time information is used to set a time for which the terminal device is in a first state of a connected mode and the second time information is used to set a time for which the terminal device is in a second state of the connected mode. The access network device can then set the connected mode of the terminal device based on the first time information or the second time information.

Abstract: Embodiments of this application provide a data transmission method and a data transmission apparatus. The method includes: obtaining, by an access management network element, information about a connection status of a terminal device in a first network; and processing, by the access management network element, a data transmission procedure of the terminal device in a second network based on the information about the connection status of the terminal device in the first network. When the terminal device needs to transmit data through both the two networks, the method in the embodiments of this application can avoid a problem that the terminal device overuses a resource in either of the networks.

Abstract: A method for accessing a serving network includes: obtaining, by a user plane network element, an access message, where the access message is for a terminal accessing a serving network, and where the access message includes authentication information of the terminal in the serving network; and sending, by the user plane network element, the access message to the serving network. The method for accessing serving network and the communications apparatus that are provided in the embodiments of this application enable a terminal to access a serving network using an access network, and expand a usage scenario of the serving network.

Abstract: Embodiments provide a bearer control method and system. The bearer control method includes: establishing a PDN connection when a UE accesses a network; and identifying and transmitting a service data flow of the UE on an air interface bearer between the UE and an access network access node according to obtained QoS information, and transmitting the service data flow by using a transmission tunnel between the access network access node and a core network gateway, or directly sending the service data flow to a packet data network by using the access network access node.

Abstract: Embodiments of this application disclose a network access method, used to restrict a network access range of a terminal device, to meet a requirement for restricting the terminal device within a specified range. The method in the embodiments of this application includes: receiving, by an access management network element, information about an area accessed by a terminal device; obtaining, by the access management network element, information about an area allowed to be accessed by the terminal device; and determining, by the access management network element based on the information about the area accessed by the terminal device and the information about the area allowed to be accessed by the terminal device, whether to allow access of the terminal device.

Abstract: Embodiments of the present application disclose a method for accessing a local network, and a related device, so that a user equipment can simultaneously access an operator network and a local network. The method in the embodiments of the present application includes: receiving, by an MME, an access request of user equipment UE that is sent by an base station eNB, where the access request carries access information of the UE; determining, according to the access information of the UE, a first local gateway corresponding to the UE; and establishing, for the UE, a user plane bearer that is from the eNB to a gateway C-GW of a core network and that includes the first local gateway used as an intermediate node.

Abstract: Embodiments of this application relate to the field of communications technologies, and provide a network connection method and an apparatus. The method carried out by a network control element includes: sending a first connection parameter to a terminal, and sending a second connection parameter to a security node, so that a network connection between the terminal and the security node is established by using the first connection parameter and the second connection parameter, where the first connection parameter is used for decrypting data encrypted by using the second connection parameter, correspondingly, the second connection parameter is used for decrypting data encrypted by using the first connection parameter, and the first connection parameter and the second connection parameter each include a security parameter used when the terminal and the security node establish the network connection.

Abstract: Embodiments of the present invention provide a data transmission method and a device. The method includes: receiving, by a mobile edge computing MEC network element, address information of a first communications device sent by the first communications device; and storing, by the MEC network element, the address information of the first communications device, where the address information of the first communications device is used to determine a destination address of an uplink data packet or a first downlink data packet of a terminal. In the embodiments of the present invention, the MEC network element receives address information of a communications device sent by the communications device, and stores the address information of the communications device.

Abstract: A network access control method and an apparatus are disclosed. The method includes controlling, by a first network device if determining that a terminal device already establishes a second data connection to a second network, the terminal device to stop establishment of a first data connection to a first network, or controlling the terminal device to end the second data connection, to smoothly establish a first data connection. In this way, it can be ensured that a data connection exists between the terminal device and one network, and it can be ensured that the terminal device can normally transmit data.

Abstract: The application provides a method, apparatus and system of configuring parameters for a base station. A network controller receives a registration request from a newly added base station. The network controller obtains wireless configuration parameters for the base station, and sends the wireless configuration parameters to the base station. The wireless configuration parameters are broadcasted by the base station to one or more terminal equipments, and are used by a terminal equipment when it sends a connection request to the base station.

Abstract: Described herein are a communication method, a security node network element, and a terminal. The method includes receiving, by a security node network element, a first data packet carrying first user plane data or first control signaling from a terminal, the first data packet is transmitted via a first security connection or a second security connection, the first security connection is used to transmit the first data packet carrying the first user plane data, and the second security connection is used to transmit the first data packet carrying the first control signaling; and sending the first control signaling to a control plane (CP) function entity if the first data packet is transmitted via the second security connection.

Abstract: Embodiments of the present invention provide a communication method in a handover process and an apparatus. The method includes: when a terminal is handed over from a source access network device to a target access network device, obtaining, by a gateway device, address information of the target access network device; obtaining, by the gateway device, address information of a Mobile Edge Computing MEC network element; and sending, by the gateway device, the address information of the target access network device to the MEC network element based on the address information of the MEC network element, so that the MEC network element modifies stored address information of the source access network device to the address information of the target access network device.

Abstract: A method and an apparatus for determining a status of a terminal device, and a device are disclosed. The method includes: obtaining, by an access and mobility management network element, an access type used by the terminal device to access a network, where the access type includes at least one of 3rd generation partnership project (3GPP) access and non-3GPP access; and determining, by the access and mobility management network element based on a status of the terminal device in the access type, the status of the terminal device, where the status of the terminal device includes at least one of a loss-of-connectivity state and an available-to-connectivity state. By using the method according to the embodiments of the present disclosure, accuracy of determining the status of the terminal device is improved.

Abstract: Embodiments provide a bearer control method and system. The bearer control method includes: establishing a PDN connection when a UE accesses a network; and identifying and transmitting a service data flow of the UE on an air interface bearer between the UE and an access network access node according to obtained QoS information, and transmitting the service data flow by using a transmission tunnel between the access network access node and a core network gateway, or directly sending the service data flow to a packet data network by using the access network access node.

Abstract: In one embodiment, a method for wireless network selection includes obtaining, by a user equipment (UE) from a visitor access network discovery and selection function (V-ANDSF) server, a visitor policy and creating a wireless local area network (WLAN) priority list in accordance with the visitor policy, a home policy, and a priority indicator. The method also includes selecting a WLAN from the priority list as a selected network.

Abstract: Example authentication methods and apparatus are described. One example method includes receiving access authentication information by an access network element from a terminal device. The access network element generates a first message based on the access authentication information, where the first message includes the access authentication information. The access network element sends the first message to an access management network element, and receives a first response message from the access management network element in response to the first message. The first response message includes response information of the access authentication information. The access network element sends the response information of the access authentication information to the terminal device based on the first response message.

Abstract: A location area management method and a device, the location area management method including receiving, by a single radio controller, a first request message, where the first request message is used by user equipment UE to request a location update, generating, by the single radio controller, a paging area list of the UE according to the first request message, where the paging area list includes a location area identity of a location area of at least one network standard, adding, by the single radio controller, the paging area list of the UE to a first response message, and sending the first response message to the UE.

Abstract: Embodiments of the present application disclose a method for accessing a local network, and a related device, so that a user equipment can simultaneously access an operator network and a local network. The method in the embodiments of the present application includes: receiving, by an MME, an access request of user equipment UE that is sent by an base station eNB, where the access request carries access information of the UE; determining, according to the access information of the UE, a first local gateway corresponding to the UE; and establishing, for the UE, a user plane bearer that is from the eNB to a gateway C-GW of a core network and that includes the first local gateway used as an intermediate node.