Wireless communication system provided with wireless communication terminal apparatuses wirelessly connected under authentification

A control method for use in a wireless communication system comprising first and second wireless communication terminal apparatuses that are wirelessly connected with each other by one of a predetermined first communication system and a predetermined second communication system, by executing an authentication process by using authentication information for establishing wireless connection,

• wherein the first wireless communication terminal apparatus comprises:
• a first connection information managing part configured to store authentication information used when the first wireless communication terminal apparatus has established wireless connection by the first communication system, and first network identification information of a first network to which the first wireless communication terminal apparatus has belonged when the first wireless communication terminal apparatus has established wireless connection by the first communication system;
• and
• a first connection control part configured to establish wireless connection by the second communication system,
• wherein the second wireless communication terminal apparatus comprises:
• a second connection information managing part configured to store authentication information used when the second wireless communication terminal apparatus has established wireless connection by the first communication system, and second network identification information of a second network to which the second wireless communication terminal apparatus has belonged when the second wireless communication terminal apparatus has established wireless connection by the first communication system;
• and
• a second connection control part configured to establish wireless connection by the second communication system,
• wherein the control method includes steps of:
• by the first connection control part, transmitting a request frame that is provided for requesting establishment of wireless connection by the second communication system and includes the first network identification information, to the second wireless communication terminal apparatus;
• by the second connection control part, transmitting a response frame including the second network identification information, to the first wireless communication terminal apparatus in response to the request frame;
• and
• by the first connection control part, comparing the second network identification information included in the response frame with the first network identification information stored in the first connection information managing part in response to the response frame by the first connection control part, and executing an authentication process with the second wireless communication terminal apparatus by using the authentication information stored in the first connection information managing part when the second network identification information included in the response frame is matched with the first network identification information stored in the first connection information managing part, thereby establishing wireless connection with the second wireless communication terminal apparatus by the second communication system.

A wireless communication terminal apparatus serving as a first wireless communication terminal apparatus for use in a wireless communication system comprising first and second wireless communication terminal apparatuses that are wirelessly connected with each other by one of a predetermined first communication system and a predetermined second communication system by executing an authentication process by using authentication information for establishing wireless connection,

• wherein the first wireless communication terminal apparatus comprises:
• a first connection information managing part configured to store authentication information used when the first wireless communication terminal apparatus has established wireless connection by the first communication system, and first network identification information of a first network to which the first wireless communication terminal apparatus has belonged when the first wireless communication terminal apparatus has established wireless connection by the first communication system;
• and
• a first connection control part configured to establish wireless connection by the second communication system,
• wherein the second wireless communication terminal apparatus comprises:
• a second connection information managing part configured to store authentication information used when the second wireless communication terminal apparatus has established wireless connection by the first communication system, and second network identification information of a second network to which the second wireless communication terminal apparatus has belonged when the second wireless communication terminal apparatus has established wireless connection by the first communication system;
• and
• a second connection control part configured to establish wireless connection by the second communication system,
• wherein the first connection control part transmits a request frame that is provided for requesting establishment of wireless connection by the second communication system and includes the first network identification information, to the second wireless communication terminal apparatus, and
• wherein the first connection control part compares the second network identification information included in the response frame with the first network identification information stored in the first connection information managing part in response to the response frame, which has been transmitted by the second wireless communication terminal apparatus in response to the request frame and includes the second network identification information of the second network to which the second wireless communication terminal apparatus has belonged when the second wireless communication terminal apparatus has established wireless connection by the first communication system, and
• the first connection control part executes an authentication process with the second wireless communication terminal apparatus by using the authentication information stored in the first connection information managing part when the second network identification information included in the response frame is matched with the first network identification information stored in the first connection information managing part, thereby establishing wireless connection with the second wireless communication terminal apparatus by the second communication system.

A wireless communication terminal apparatus serving as a second wireless communication terminal apparatus for use in a wireless communication system comprising first and second wireless communication terminal apparatuses that are wirelessly connected with each other by one of a predetermined first communication system and a predetermined second communication system, by executing an authentication process by using authentication information for establishing wireless connection,

• wherein the first wireless communication terminal apparatus comprises:
• a first connection information managing part configured to store authentication information used when the first wireless communication terminal apparatus has established wireless connection by the first communication system, and first network identification information of a first network to which the first wireless communication terminal apparatus has belonged when the first wireless communication terminal apparatus has established wireless connection by the first communication system;
• and
• a first connection control part configured to establish wireless connection by the second communication system,
• wherein the second wireless communication terminal apparatus comprises:
• a second connection information managing part configured to store authentication information used when the second wireless communication terminal apparatus has established wireless connection by the first communication system, and second network identification information of a second network to which the second wireless communication terminal apparatus has belonged when the second wireless communication terminal apparatus has established wireless connection by the first communication system;
• and
• a second connection control part configured to establish wireless connection by the second communication system, and
• wherein the second connection control part transmits a response frame including the second network identification information, to the first wireless communication terminal apparatus, in response to receiving a request frame that is provided for requesting establishment of wireless connection by the second communication system and includes the first network identification information, from the first wireless communication terminal apparatus.