Patent ID: 7209663

Claim:
A repeater using wireless optical transmission, comprising: a donor device for transmitting two identical copies of an optical signal through two different routes by receiving a RF signal from a base station and electro-optic converting the RF signal to an optical signal, and for transmitting a RF signal to the base station by receiving two identical copies of the optical signal through two different routes and optic-electro converting the optical signal to a RF signal; and a coverage device for transmitting a RF signal to a mobile communication terminal by receiving two identical copies of the optical signal through two different routes from said donor device and optic-electro converting the two identical copies of the optical signal to the RF signal, and transmitting two identical copies of the optical signal through two different routes to said donor device by receiving the RF signal from the mobile communication terminal and elector-optic converting the RF signal to the optical signal, wherein the donor device includes: a donor antenna for transmitting an internal RF signal to the base station and receiving an external RF signal from the base station; a first duplex means for passing the external RF signal and transmitting the internal RF signal to the base station; a first forward process means for transforming the external RF signal from the first duplex means into an internal optical signal; a first transmission means for externally transmitting the internal optical signal from the first forward process means; a first optical signal duplex means for receiving the internal optical signal and a first external optical signal and distributing the internal optical signal and the first external optical signal; a first transceiver means for receiving the internal optical signal from the first optical signal duplex means and externally transmitting the internal optical signal, and receiving an external optical signal from said coverage device and transmitting to the first optical signal duplex means as the first external optical signal; a first reception means for receiving the external optical signal from said coverage device as a second external optical signal; and a first backward process means for receiving the second external optical signal from the first reception means and the first external optical signal from said first transceiver means through said first optical signal duplex means, converting to the internal RF signal, and passing the internal RF signal to the first duplex means.