Patent ID: 7444117

Claim:
A wireless network system for use with two vehicles, said system comprising: a first relay device including first and second Bluetooth® modules, each of the first and second Bluetooth® modules capable of performing a cable communication irrespective of which is a master or slave, wherein said relay device is configured to be mounted to a first vehicle of said two vehicles; and at least one first wireless terminal including a third Bluetooth® module, wherein the first and third Bluetooth® modules structure a first piconet in which the first Bluetooth® module is a master, and the third Bluetooth® module is a slave, the second Bluetooth® module structures a second piconet; and wherein the first piconet and the second piconet structure a network, a second relay device including a fourth Bluetooth® module, wherein said second relay is configured to be mounted to a second vehicle of said two vehicles; and at least one second wireless terminal including a fifth Bluetooth® module, wherein the second, fourth, and fifth Bluetooth® modules structure a second piconet in which the fourth Bluetooth® module is a master, and the second and fifth Bluetooth® modules are slaves.