Method and apparatus for transmitting/receiving signals in a microwave system

• US 20100150565A1
• Filed: 11/25/2009
• Published: 06/17/2010
• Est. Priority Date: 12/17/2008
• Status: Active Grant

• Current Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Inventors: Zhao, Guixue
• Granted Patent: US 8,385,745 B2
• Time in Patent Office: Days
• US Class Current: 398/115
• CPC Class Codes: H04B 10/032 using working and protection systems H04J14/0287 takes precedence
• CPC Class Codes: H04B 10/25759 Details of the reception of RF signal or the optical conversion before the optical fibre

Abstract

This invention discloses a method and an apparatus for transmitting/receiving signals in a microwave system, and pertains to the field of communications. The transmitting method comprises receiving and modulating a transmission signal transmitted via an optical fiber; processing the modulated transmission signal to generate RF signal; and separating the RF signal to be transmitted from a signal received via an antenna, and transmitting the separated RF signal via the antenna. The receiving method comprises separating a signal received via an antenna from a signal to be transmitted; processing the received signal after being separated to generate IF signal; demodulating the generated IF signal; and transmitting the received signal after being demodulated via an optical fiber. The transmitting/receiving apparatus comprises an optical fiber signal interface, a signal reception module, a modulation module, an IF-RF transmission module, a duplexer, a control module and a power interface. Use of the optical fiber to transmit the transmission signal and the received signal according to the present invention makes it possible for application of large capacity microwave and also greatly saves production cost.

Claims

1. A method for transmitting a signal in a microwave system, comprising:

receiving and modulating a transmission signal transferred via an optical fiber;

processing the modulated transmission signal to generate RF signal; and

separating the RF signal to be transmitted from a signal received via an antenna, and transmitting the separated RF signal via the antenna.

2. The method for transmitting a signal in a microwave system according to claim 1, wherein the step of receiving and modulating a transmission signal transferred via an optical fiber comprises:

receiving the transmission signal transferred via the optical fiber;

dividing the transmission signal into two branches;

taking one branch of the transmission signal as a backup signal; and

selecting the another branch of the transmission signal and a transmission signal sent from a traffic protection bus to modulate.

3. A method for receiving a signal in a microwave system, comprising:

separating a signal received via an antenna from a signal to be transmitted;

processing the received signal after being separated to generate an IF signal;

demodulating the generated IF signal; and

transmitting the received signal after being demodulated via an optical fiber.

4. The method for receiving a signal in a microwave system according to claim 3, wherein the step of transmitting the received signal after being demodulated via an optical fiber comprises:

dividing the received signal after being demodulated into two branches;

taking one branch of the received signal as a backup signal;

selecting any one from the another branch of the received signal and a demodulated received signal sent from a traffic protection bus to process; and

transmitting the received signal after being processed via the optical fiber.

5. An apparatus for transmitting/receiving a signal in a microwave system, comprising an optical fiber signal interface, a signal reception module, a modulation module, an IF-RF transmission module, a duplexer, a control module and a power interface, wherein

the signal reception module is adapted to receive a transmission signal sent from another apparatus via the optical fiber signal interface, and send the transmission signal to the modulation module;

the modulation module is adapted to modulate the transmission signal sent from the signal reception module;

the IF-RF transmission module is adapted to process the transmission signal having been modulated by the modulation module to generate an RF signal;

the duplexer is adapted to separate the RF signal to be transmitted from a signal received via an antenna, and transmit the separated RF signal to the antenna;

the control module is adapted to configure and manage the signal reception module, the modulation module and the IF-RF transmission module in the apparatus via the optical fiber signal interface; and

the power interface is adapted to enable another apparatus to supply power to the apparatus.

6. The apparatus for transmitting/receiving a signal in a microwave system according to claim 5, further comprising a backup control interface, wherein

the control module is further adapted to configure and manage the signal reception module, the modulation module and the IF-RF transmission module in the apparatus via the backup control interface.

7. The apparatus for transmitting/receiving a signal in a microwave system according to claim 5, further comprising a traffic protection bus interface, wherein

the signal reception module is adapted to receive the transmission signal via the optical fiber signal interface, divide the received signal into two branches, take one branch of the received signal as a backup signal, and select any one of the another branch of the received signal and a transmission signal sent from the traffic protection bus interface for transmission to the modulation module.

8. The apparatus for transmitting/receiving a signal in a microwave system according to claim 5, wherein the duplexer is adapted to separate the signal received via the antenna from the RF signal to be transmitted,

and wherein the apparatus is further adapted to comprise an IF-RF reception module adapted to process the received signal separated by the duplexer to generate an IF signal and a demodulation module adapted to demodulate the generated IF signal;

and wherein the signal reception module is further adapted to transmit the signal demodulated by the demodulation module to another apparatus via the optical fiber signal interface,

and wherein the control module is further adapted to configure and manage the IF-RF reception module and the demodulation module in the apparatus via the optical fiber signal interface.

9. The apparatus for transmitting/receiving a signal in a microwave system according to claim 6, wherein the control module is adapted to configure and manage the IF-RF reception module and the demodulation module in the apparatus via the backup control interface.

10. The apparatus for transmitting/receiving a signal in a microwave system according to claim 8, wherein the control module is adapted to configure and manage the IF-RF reception module and the demodulation module in the apparatus via the backup control interface.

11. The apparatus for transmitting/receiving a signal in a microwave system according to claim 8, wherein the signal reception module is adapted to divide the demodulated received signal sent from the demodulation module into two branches, take one branch of the received signal as a backup signal, select any one from the another branch of the received signal and a demodulated received signal sent from the traffic protection bus interface to process, and transmit the received signal after being processed via the optical fiber signal interface.