Apparatus, device, and method for establishing connection to packet data network

A device, comprising:

• a processor;
• and
• a non-transitory computer-readable storage medium storing a program to be executed by the processor, in response to detecting that the terminal has roamed from a first public land mobile network (PLMN) to a second PLMN, the program including instructions to:
• send, to a terminal, a voice packet data network (PDN) connection release request that carries a reconnection indication;
• receive a PDN reconnection request for the terminal;
• select an anchor gateway of the second PLMN;
• and
• connect the terminal to the PDN through the anchor gateway that is selected.

A method, comprising:

• determining, in response to detecting a change in a position of a terminal, whether an area served by a data forwarding gateway through which the terminal connects to a packet data network (PDN) is inconsistent with an area served by a first anchor gateway;
• and
• in response to determining that the area served by the data forwarding gateway is inconsistent with the area served by the first anchor gateway:
• sending, to the terminal, a PDN connection release request that carries a reconnection indication;
• receiving a PDN reconnection request sent by the terminal;
• selecting a second anchor gateway that serves an area consistent with the area served by the data forwarding gateway;
• and
• connecting the terminal to the PDN through the second anchor gateway.