Patent ID: 8385745

Claim:
A method for transmitting/receiving a signal in a microwave system, when a signal is transmitted and there is a failure in a primary transmission apparatus in the microwave system, the method comprising: receiving a first transmission signal transferred via an optical fiber; dividing the first transmission signal into a first branch and a second branch; taking the first branch of the transmission signal as a backup signal; selecting for modulation, a second transmission signal from the group consisting of: (a) the second branch of the first transmission signal, and (b) a third transmission signal sent from a traffic protection bus; modulating the selected second transmission signal; processing the modulated second transmission signal to generate an RF signal; and separating the RF signal to be transmitted from a first signal received via an antenna, and transmitting the separated RF signal via the antenna; and wherein, when a second signal is received via the antenna, the method further comprises: separating the second signal received via the antenna from an RF signal to be transmitted; processing the separated signal to generate an Intermediate Frequency (IF) signal; demodulating the generated IF signal; and transmitting the demodulated IF signal via the optical fiber, the step of transmitting comprising: dividing the demodulated IF signal into a third branch and a fourth branch; taking the third branch of the demodulated IF signal as a backup signal; selecting for process, a fourth transmission signal from the group consisting of: (a) the fourth branch of the demodulated IF signal, and (b) a fifth transmission signal sent from the traffic protection bus; and transmitting the fourth transmission signal, after being processed, via the optical fiber.