Patent ID: 7787433

Claim:
A communication method used in a wireless communication system which includes both a repeater relay station of a wireless communication network using repeater system and a frequency division multiple access (FDMA) relay station of a wireless communication network using FDMA system, the method comprising the steps of: receiving a call signal from a repeater wireless terminal in the wireless communication network using repeater system, by the repeater relay station; connecting the repeater relay station to the FDMA relay station by a line to forward the call signal received by the repeater relay station to the FDMA relay station after adding a relay station identifier and relay station communication information to the received call signal; setting the forwarded call signal in a terminal control information field in a control signal and setting auxiliary information in a system information field in the control signal at the FDMA relay station; transmitting the control signal to an FDMA wireless terminal in the wireless communication network using FDMA system; detecting by the FDMA wireless terminal, which has received the control signal having the terminal control information field and system information field, the call signal being from the repeater wireless terminal and a downlink frequency (e.g., f 2 ) of the repeater relay station, on the basis of the received control signal; switching by the FDMA wireless terminal its own reception frequency from a downlink frequency (e.g., f 3 ) of the FDMA relay station to the downlink frequency (e.g., f 2 ) of the repeater relay station; relay-transmitting by the repeater relay station a voice signal contained in a signal transmitted by the repeater wireless terminal to the downlink frequency (e.g., f 2 ); and receiving the voice signal from the repeater wireless terminal by the FDMA wireless terminal whose reception frequency has been changed to the downlink frequency (e.g., f 2 ) so that the FDMA wireless terminal communicates via the repeater relay station with the repeater wireless terminal, wherein the call signal to be transmitted from the repeater wireless terminal to the repeater relay station, the call signal to be transmitted from the repeater relay station to the FDMA relay station and the call signal to be transmitted from the FDMA relay station to the FDMA wireless terminal are carried by using respective distinct signal formats.