Method for generating prompt message for network connection conversion, and network system thereof

A network system, comprising:

• a plurality of APs forming a LAN, wherein the plurality of APs include a root AP, and each of the APs provides network connection service to any connected terminal device;
• a processor disposed in the root AP and used to perform a method for generating a prompt message for network connection conversion, wherein the method includes:
• receiving a connection conversion command from a user device, wherein the connection conversion command designates a target AP among the plurality of APs, and the root AP instructing the target AP to issue a lock signal to at least one AP within a subnet for maintaining a connection between the at least one AP and the target AP and disconnect an original connection between the target AP and an originally-connected AP;
• obtaining at least one wireless signal strength between the target AP and at least one AP among the plurality of APs for determining at least one connectable AP for the target AP;
• obtaining at least one connection rate from the target AP through the at least one connectable AP to the root AP;
• and
• generating the prompt message for connection conversion according to the at least one connection rate;
• when the target AP re-connects with any AP of the LAN, the target AP issues a unlock signal to the at least one AP of the subnet, so as to release a lock relationship between the target AP and the at least one AP of the subnet.