Network handover method, terminal device, and access point device for performing handover by reusing an established protocol stack link

A network handover method, comprising:

• establishing, by a second wireless fidelity (Wi-Fi) network of an access point device, a connection to a terminal device;
• and
• reusing, by the second Wi-Fi network, an established protocol stack link between the terminal device and a first Wi-Fi network of the access point device for communication with the terminal device, without requiring the terminal device to re-obtain an internet protocol (IP) address, wherein
• service set identifiers (SSID) s of the second Wi-Fi network and the first Wi-Fi network are different.

A terminal device, comprising:

• a transceiver;
• a processor;
• and
• a memory configured to store computer readable instructions that, when executed by the processor, cause the terminal device to:
• detect a network parameter, of a first wireless fidelity (Wi-Fi) network, for connecting the terminal device to an access point device;
• initiate scanning when the network parameter of the first Wi-Fi network first condition;
• obtain authentication information of a second Wi-Fi network based on the terminal device obtaining the second Wi-Fi network of the access point device through scanning and the terminal device being associated with the second Wi-Fi network, wherein service set identifiers (SSID) s of the second Wi-Fi network and the first Wi-Fi network are different;
• and
• access, without re-obtaining an internet protocol (IP) address, the second Wi-Fi network based on the authentication information of the second Wi-Fi network by using the transceiver, wherein the second Wi-Fi network is configured to reuse an established protocol stack link between the terminal device and the first Wi-Fi network for communication.