Peer-to-peer wireless transmission system and method thereof

A peer-to-peer wireless transmission system, comprising a first system and a second system, and the first system having a first identification code and an application program installed in the first system, and the second system having an identification unit, a transmission unit, a processing unit and a second identification code, and the transmission unit being electrically coupled to the first system and the identification unit, and the processing unit being electrically coupled to the identification unit and the transmission unit, and the first system communicating with the second system through a TCP/IP Wi-Fi Direct method, characterized in that:

• when the application program is started, the application program automatically searches the second system to read the second identification code and check a built-in direct connection list, and if no data is recorded in the built-in direct connection list, a connection request having the first identification code and a set parameter having a PIN code are transmitted to the second system, and the second system receives the connection request through the transmission unit, and the identification unit automatically checks a built-in security list, and if no data is recorded in the built-in security list, the first identification code is recorded, and the set parameter is used for establishing a direct connection with the first system after performing a system installation and setting a network configuration, while the first system records the second identification code into the built-in direct connection list;
• if the first identification code is correspondingly recorded in the built-in security list, then the connection request is received to establish the direct connection;
• on the other hand, if a non-corresponding first identification code is recorded, the first system is requested to provide the PIN code in order to establish the direct connection after the confirmation;
• if the second identification code is recorded in the built-in direct connection list, the first system transmits the connection request to the second system according to the second identification code, and if the second system confirms that the first identification code is correspondingly recorded in the built-in security list, a direct connection is established;
• if no data is recorded in the built-in security list, the first identification code is recorded, and the first system is requested to perform a setup and an online connection after providing the set parameter;
• after the online connection, the first system transmits a service request to the second system through the application program, so that the processing unit drives the transmission unit and the first system to perform a data transmission or synchronization according to the service request.