| 摘要 |
Embodiments of the present invention provide a mobile network communications method, communications apparatus, and communications system, which can solve a roundabout communication routing problem of a mobile node. A transport packet data network gateway stores information about all IP address segments in an entire mobile network that are used for being assigned to a mobile node, and notifies all nearby network nodes of the information about all IP address segments. The method includes: receiving, by a transport packet data network gateway, a data packet to be sent to a mobile node, and determining a home packet data network gateway of the mobile node according to IP address information of the mobile node; then sending a data connection establishment request message to the home packet data network gateway, to request to establish a data connection to a base station or a serving gateway at a location of the mobile node; and finally sending the data packet to the base station or the serving gateway through a channel of the data connection, or receiving a data packet that is sent by the base station or the serving gateway through a channel of the data connection. The present invention is applicable to the communications field. |
