Patent ID: 7254400

Claim:
A wireless terminal communication method in a network, the network comprising, a plurality of wireless terminals, and a terminal location database for controlling position information of the wireless terminals, the wireless terminal communication method comprises the steps of: sending an inquiry to the terminal location database by a mobile wireless terminal for position information of a destination mobile wireless terminal of the mobile wireless terminal; sending communications transmissions to the destination mobile wireless terminal from the mobile wireless terminal to share data between the mobile wireless terminal and the destination mobile wireless terminal when the mobile wireless terminal has received the position information of the destination mobile wireless terminal from the terminal location database; exchanging periodically the position information of the wireless terminals by the terminal location database; notifying to an other terminal location database who can respond to the inquiry after the terminal location database receives an inquiry regarding a relevant information from the wireless terminal; and wherein the wireless terminal makes an inquiry to the other terminal location database based on this notification of the position of the other terminal location database.