CN103378899B - A kind of control method and system applying cross polarization interference canceler - Google Patents

Abstract

The invention discloses a control method and system using a cross-polarization interference canceller. The method includes judging whether the microwave transmission service using the cross-polarization interference canceller fails, and whether the preset fault processing mode is a non-prohibited mode; if If a fault occurs, and the preset fault processing mode is not disabled mode, the fault processing will be carried out. Through the above technical solutions, the present invention solves the problem in the prior art that the microwave transmission service using the cross-polarization interference canceller is not protected and affects the transmission quality of the co-channel dual-polarization technology.

Description

A control method and system using a cross-polarization interference canceller

technical field

The invention relates to the communication field, in particular to a control method and system using a cross-polarization interference canceller.

Background technique

With the development of communication networks, the demand for service bandwidth increases continuously, but the available frequency resources are limited. In order to effectively increase the microwave transmission capacity without occupying more spectrum resources, in addition to using high-order modulation technology, another effective method is to use co-channel dual polarization (CCDP) technology. CCDP technology refers to the On the same carrier frequency, two different signals are transmitted simultaneously through dual-polarized antennas. This method can theoretically double the transmission capacity of the system.

In practical applications, due to the limited isolation of the antenna itself, and the influence of multipath effects of microwave transmission and rain attenuation, the cross-polarized signals of the same frequency inevitably interfere with each other, which affects the transmission quality of CCDP technology. have serious consequences. In order to eliminate this interference, a relatively mature technology is to use a cross-polarization interference canceller (XPIC) in the CCDP technology. Although the introduction of XPIC can reduce the interference between dual-polarized signals, improve the immunity of the system, and improve the utilization rate of frequency resources, there are still some defects. For example, when one signal fails, the introduction of XPIC will affect the transmission quality. The negative impact is far greater than the positive impact. Therefore, it is necessary to protect the microwave transmission service using XPIC technology to ensure the stability and reliability of the microwave transmission service using XPIC technology.

Contents of the invention

The invention provides a control method and system using a cross-polarization interference canceller, which solves the problem in the prior art that the microwave transmission service using XPIC is not protected and affects the transmission quality of CCDP technology.

In order to solve the problems of the technologies described above, the present invention adopts the following technical solutions:

A control method using a cross-polarization interference canceller includes: judging whether the microwave transmission service using the cross-polarization interference canceller fails, and whether the preset fault handling mode is a non-disabled mode; if a fault occurs, and the preset Fault handling mode is non-disabling mode; fault processing is performed.

In an embodiment of the present invention, the method for judging whether the microwave transmission service using the cross-polarization interference canceller is faulty includes: periodically detecting the microwave transmission service applying the cross-polarization interference canceller; Whether the number of times is greater than the preset value; if it is greater than the preset value, the judgment result is that the microwave transmission service to which the cross-polarization interference canceller is applied fails.

In an embodiment of the present invention, the method for troubleshooting includes: detecting the power amplifier status of each outdoor unit (OutDoorUnit, abbreviated as ODU) in the cross-polarization interference canceller group; Processing; if necessary, keep the power amplifier of one of the outdoor units in the current cross-polarization interference canceller group turned on, and turn off the power amplifiers of the other outdoor units in the cross-polarization interference canceller.

In an embodiment of the present invention, the control method using the cross-polarization interference canceller further includes: judging whether the preset service recovery mode is an automatic recovery mode, and if so, performing service recovery.

In an embodiment of the present invention, the method for service recovery includes: detecting whether the fault in the microwave transmission service using the cross-polarization interference canceller has disappeared; if it has disappeared, judging whether service recovery is required according to the preset recovery principle ; If necessary, keep the power amplifier of one of the outdoor units in the pair of outdoor units that are mutually protected in the current cross-polarization interference canceller group as open, and turn off the power amplifier of the other outdoor unit that is mutually protected.

In an embodiment of the present invention, the process of performing service recovery is automatically triggered after the failure disappears, or is triggered after the return timer expires by setting a return timer.

A control system using a cross-polarization interference canceller, including a first judging module, a second judging module, and a failure processing module: the first judging module is used to judge whether the microwave transmission service using the cross-polarization interference canceller fails; The second judging module is used to judge whether the preset fault processing mode is a non-disabling mode; the fault processing module is used for the judging result of the first judging module to be a fault, and the judging result of the second judging module is not disabling mode, perform troubleshooting.

In an embodiment of the present invention, the first judging module includes a first detecting module and a first judging sub-module; wherein, the first detecting module is used for periodically detecting microwave transmission services to which a cross-polarization interference canceller is applied ; The first judging sub-module is used to judge whether the number of times the first detection module continuously detects a fault is greater than a preset value, and if it is greater than a preset value, the output judgment result is a microwave transmission service using a cross-polarization interference canceller error occured.

In an embodiment of the present invention, the fault processing module includes a second detection module, a third judgment module and a fault processing sub-module, wherein the second detection module is used to detect the power amplifier status of each outdoor unit in the cross-polarization interference canceller group The third judging module is used to judge whether to perform fault handling according to the power amplifier status of each outdoor unit detected by the second detection module and the preset fault handling principle; the fault handling sub-module is used for the third judgment When the module determines that troubleshooting is required, the power amplifier of one of the outdoor units in the current cross-polarization interference canceller group is turned on, and the power amplifiers of the other outdoor units in the cross-polarization interference canceller group are turned off.

In an embodiment of the present invention, the control system using the cross-polarization interference canceller further includes a fourth judging module and a service recovery module, wherein the fourth judging module is used to judge whether the preset service recovery mode is an automatic recovery mode; The service recovery module is used to perform service recovery when the determination result of the fourth determination module is the automatic recovery mode.

In a control system applying a cross-polarization interference canceller, the service recovery module includes a third detection module, a fifth judgment module, and a service recovery sub-module, wherein the third detection module is used to detect microwave transmission services to which a cross-polarization interference canceller is applied Whether the fault has disappeared; the fifth judging module is used to judge whether service restoration is required according to the preset restoration principle; the business restoration sub-module is used to retain the current cross-polarization when the judgment result of the fifth judging module is necessary The power amplifier of one outdoor unit in a pair of outdoor units that are a mutual protection pair in the interference canceller group is turned on, and the power amplifier of the other outdoor unit that is a mutual protection pair is turned off.

The present invention provides a control method and system using a cross-polarization interference canceller. In the CCDP technology that introduces XPIC, it is judged whether there is a fault in the microwave transmission service and whether the preset fault processing mode is a non-disabled mode. If When the preset fault processing mode is disabled mode, no fault processing will be performed regardless of whether the microwave transmission service fails. to process. On the one hand, by manually setting the fault handling mode in advance, the purpose of selectively performing fault handling according to the user's wishes is realized. On the other hand, when the preset fault handling mode is non-disabling mode, and after the fault is detected, the fault is handled in a timely manner, which realizes the protection of microwave transmission services using XPIC and avoids insufficient microwave transmission services using XPIC technology Stable and reliable.

Description of drawings

Fig. 1 is a flowchart of a control method using XPIC provided by an embodiment of the present invention;

Fig. 2 is a flow chart for judging whether a microwave transmission service using XPIC is faulty provided by an embodiment of the present invention;

FIG. 3 is a flow chart of fault handling provided by an embodiment of the present invention;

FIG. 4 is a flow chart of service recovery provided by an embodiment of the present invention;

FIG. 5 is a flow chart of service recovery provided by another embodiment of the present invention;

6 is a schematic diagram of a control system applying XPIC provided by an embodiment of the present invention;

Fig. 7 is a schematic diagram of a first judging module in the control system shown in Fig. 6;

Fig. 8 is a schematic diagram of a fault processing module in the control system shown in Fig. 6;

9 is a schematic diagram of a control system applying XPIC provided by another embodiment of the present invention;

FIG. 10 is a schematic diagram of a service recovery module in the control system shown in FIG. 9 .

detailed description

The general idea of the present invention is that in the CCDP technology that introduces XPIC, it is judged whether there is a fault in the microwave transmission service and whether the preset fault handling mode is a non-disabled mode. If the preset fault handling mode is a disabled mode, , no matter whether there is a fault in the microwave transmission service, the fault processing will not be performed. If the preset fault processing mode is non-disabling mode, the fault will be processed in time after the fault is detected. As shown in Figure 1, the control method for applying XPIC provided by an embodiment of the present invention includes:

S11. Determine whether the preset failure processing mode is a non-disabling mode, if it is a non-disabling mode, proceed to step S12, and if it is a disabling mode, proceed to step S14.

S12. Determine whether the microwave transmission service using the XPIC is faulty. If there is a fault, go to step S13. If there is no fault, go to step S14.

S13. Perform fault handling.

S14. End the process.

Wherein, the order of step S11 and step S12 can be reversed. When it is judged that the microwave transmission service using XPIC is not faulty, it ends, and after it is judged that the microwave transmission service using XPIC is faulty, continue to judge the preset fault handling Whether the mode is a non-disabling mode, if it is a non-disabling mode, perform fault handling, and if it is a disabling mode, end the process.

Take the configuration structure of XPIC+HSB in the prior art as an example. H-ODU and H'-ODU form the protection pair of RF units in the H direction, V-ODU and V'-ODU form the protection pair of RF units in the V direction, and H-MU and H'-MU form the IF unit protection pair in the H direction , V-MU and V'-MU form a V-direction IF unit protection pair. The radio frequency unit in the H direction, the intermediate frequency unit in the H direction, and the air propagation path in the H direction form a wireless link in the H direction. The radio frequency unit in the V direction, the intermediate frequency unit in the V direction, and the air propagation path in the V direction form a wireless link in the V direction. The wireless link in the H direction and the wireless link in the V direction form an XPIC group, and the XPIC group uses the same frequency band to transmit services. In this configuration structure, the microwave transmission service failure mainly refers to the wireless link failure in the H direction and the wireless link failure in the V direction. The wireless link failure in the H direction includes the hardware of the radio frequency unit in the H direction and the IF unit in the H direction. Faults, and air propagation path faults in the H direction, wireless link faults in the V direction include hardware faults of the radio frequency unit in the V direction and the IF unit in the V direction, and air propagation path faults in the V direction.

As shown in FIG. 2 , it is a method for judging whether the microwave transmission service using the XPIC is faulty based on the configuration structure of XPIC+HSB. Since the switching time of the radio frequency unit and the intermediate frequency unit is usually completed within 300ms, in order to be compatible with the wireless link protection without losing the real-time performance of fault handling, the detection cycle can be set to 60ms, and the fault processing can only be performed after 6 faults in continuous testing , the specific process is as follows:

S121. Select multiple fault detection points on the wireless link in the H direction and the wireless link in the V direction of the XPIC+HSB configuration structure. For example, multiple fault detection points for detecting radio frequency units and intermediate frequency units in the wireless link in the H direction and the V direction wireless link, and the air propagation path in the wireless link in the H direction and the V direction wireless link Multiple fault detection points for detection.

S122. Setting a fault detection timer and a fault counter. Set the fault detection timer to perform a fault detection every 60ms.

S123, the fault detection timer performs fault detection in the current cycle, mainly to detect the fault detection points selected in advance on the wireless link in the H direction and the wireless link in the V direction, and judge whether any fault detection point has a fault , if any fault detection point fails, then enter step S124, all fault detection points do not have faults, then the fault counter is cleared, return to step S123, the fault detection timer continues the detection of the next cycle.

Wherein, the detection of the radio frequency unit and the intermediate frequency unit in the wireless link of the H direction and the wireless link of the V direction mainly refers to the detection of a hardware fault. For the detection of the air propagation path in the wireless link in the H direction and the wireless link in the V direction, the quality of the received signal can be detected by the IDU to detect whether the air propagation path is faulty.

S124, add 1 to the fault counter, and enter step S125.

S125 , judging whether the count of the fault counter exceeds 6 times, if so, proceed to step S126 , otherwise, return to step S123 , and the fault detection timer continues detection in the next cycle.

S126. Outputting a judgment result is that the microwave transmission service using the XPIC fails.

As shown in Figure 3, it is a method for troubleshooting based on the configuration structure of XPIC+HSB,

S131. Turn off the function of receiving the cancellation signal in the XPIC group;

S132. Detect the power amplifier status of each ODU in the XPIC group. From the configuration structure of the above XPIC+HSB, it can be known that the ODUs in the XPIC group include the H-ODU and H'-ODU that form the radio frequency unit protection pair in the H direction, and also include the V The V-ODU and V'-ODU of the radio unit protection pair in the direction.

S133. Determine whether to perform an operation of shutting down the ODU power amplifier according to a preset fault handling principle. If yes, go to step S134, if not, go to step S136. The preset fault handling principle may be: only keep the power amplifier of one ODU in the current XPIC group turned on, and the power amplifiers of other ODUs need to be turned off.

S134. Determine whether the preset wireless link protection mode is an automatic mode or a return mode (the wireless link protection mode can be divided into three types: automatic, return and forced (manual). In the automatic mode or return mode, the ODU power amplifier can be turned on or Turn off the ODU power amplifier (it is not allowed to turn on the ODU power amplifier or turn off the ODU power amplifier in the forced mode), if so, go to step S135, otherwise, go to step S136.

S135. Keep the power amplifier of one of the ODUs in the current XPIC group turned on, and turn off the power amplifiers of the other ODUs.

S136. End the process.

After the fault is processed, the present invention also judges whether the preset service recovery mode is an automatic recovery mode, and if so, the service recovery process can be carried out. The ways to trigger the process of service recovery include but are not limited to the following two ways: one is to trigger after the fault disappears, and the other is to set a return timer to trigger after the return timer expires.

As shown in Figure 4, it is a method of service recovery based on the configuration structure of XPIC+HSB. This method is mainly aimed at the hardware failure of the radio frequency unit and intermediate frequency unit, which causes a certain signal to fail to transmit normally. After the hardware failure disappears, the method is automatically triggered. Business recovery process:

S41. Detect whether the fault occurred in the microwave transmission service using the XPIC disappears, if yes, go to step S42, otherwise, go to step S45.

S42. Determine whether the preset service recovery mode is an automatic recovery mode, if yes, go to step S43, otherwise, go to step S45.

S43. Determine whether service recovery is required according to the preset recovery principle. The preset recovery principle may be: keep the power amplifier of one of the pair of ODUs in the current XPIC group that is a mutual protection pair in the open state, and turn on the power amplifier of the mutual protection pair The power amplifier of another ODU is turned off. If necessary, go to step S44; otherwise, go to step S45.

S44. Keep the power amplifier of one ODU of a pair of ODUs that are a mutual protection pair in the current XPIC group turned on, and turn off the power amplifier of the other ODU that is a mutual protection pair.

S45. End the process.

Wherein, the order of steps S41 and S42 can be reversed, first determine whether the preset service recovery mode is the automatic recovery mode, if so, then detect whether the fault occurred in the microwave transmission service using XPIC disappears, and if it disappears, then enter step S43 , otherwise, go to step S45. In steps S43 and S44, the specific process can be: determine whether any ODU of the XPIC group has an ODU that is a mutual protection pair with it, if not, then directly turn on the power amplifier of the ODU, and turn on the function of receiving the offset signal in the XPIC group . If it exists, detect the power amplifier status of a pair of ODUs that are mutual protection pairs. If the power amplifier statuses of a pair of ODUs that are mutual protection pairs are both on or off, then judge whether the preset wireless link protection mode is automatic mode or return mode (the wireless link protection mode can be divided into three types: automatic, return and forced (manual). In the automatic mode or return mode, the ODU power amplifier can be turned on or off. In the forced mode, it is not allowed to turn on the ODU power amplifier or Turn off the ODU power amplifier), if so, keep the power amplifier of one ODU in the pair of ODUs that are mutually protected as on, and turn off the power amplifier of the other ODU that is mutually protected as the pair.

As shown in Figure 5, it is another method of service recovery based on the configuration structure of XPIC+HSB. This method is mainly aimed at performing services by pre-setting the return timer after a certain signal cannot be transmitted normally due to the fading of the air propagation path. Recovery process:

S51 , judging whether the preset return timer has timed out, if timed out, go to step S52 , otherwise, go to step S59 .

S52, judging the hardware state in the wireless link (the hardware state of the radio frequency unit in the wireless link of the H direction and the V direction, the hardware state of the intermediate frequency unit) and the air propagation path (the wireless link of the H direction and the V direction Whether the air propagation path in the wireless link) is good, if so, then enter step S53, if there is a fault, then enter step S59.

S53. Determine whether service recovery is required according to the preset recovery principle. The preset recovery principle may be: keep the power amplifier of one of the ODUs in the pair of ODUs that are mutually protected in the current XPIC group as turned on, and turn on the power amplifier of each other. The power amplifier of the other ODU of the protection pair is turned off. If necessary, go to step S54; otherwise, go to step S59.

S54. Keep the power amplifier of one ODU of a pair of ODUs that are a mutual protection pair in the current XPIC group turned on, and turn off the power amplifier of the other ODU that is a mutual protection pair.

In order to prevent recovery failure, after a period of time, you can check whether the recovery is successful by the following methods:

S55. Setting a regression failure timer.

S56, judging whether the regression failure timer is overtime, if so, then enter step S57, otherwise, return to step S56;

S57, judging the hardware state in the wireless link (the hardware state of the radio frequency unit in the wireless link in the H direction and the V direction wireless link, the intermediate frequency unit) and the air propagation path (the wireless link in the H direction and the V direction Whether the air propagation path in the wireless link) is good, if not, then enter step S58, if, then enter step S59;

S58. Turn off the ODU power amplifier at the local end, and reset the return timer if service recovery fails.

S59. End the process.

Wherein, in steps S53 and S54, the specific process can be: determine whether any ODU of the XPIC group has an ODU that is a mutual protection pair with it, if not, directly turn on the power amplifier of the ODU, and turn on the XPIC group to receive the offset signal function. If it exists, detect the power amplifier status of a pair of ODUs that are mutual protection pairs. If the power amplifier statuses of a pair of ODUs that are mutual protection pairs are both on or off, then judge whether the preset wireless link protection mode is automatic mode or return mode (the wireless link protection mode can be divided into three types: automatic, return and forced (manual). In the automatic mode or return mode, the ODU power amplifier can be turned on or off. In the forced mode, it is not allowed to turn on the ODU power amplifier or Turn off the ODU power amplifier), if so, keep the power amplifier of one ODU in the pair of ODUs that are mutually protected as on, and turn off the power amplifier of the other ODU that is mutually protected as the pair.

The present invention also includes a control system using XPIC. As shown in FIG. 6, the control system using XPIC provided by an embodiment of the present invention includes a first judging module 61, a second judging module 62 and a fault processing module 63. The first judging module 61 is used for judging whether the microwave transmission service of applying XPIC breaks down, and the second judging module 62 is used for judging whether the preset fault processing mode is a non-disabling mode, and the fault processing module 63 is used for the first judging module 61. If the judgment result is that there is a fault, and the judgment result of the second judgment module 62 is that the mode is not disabled, the fault processing is performed; if the judgment result of the second judgment module 62 is the disabled mode, the fault processing is not performed.

As shown in Figure 7, the first judgment module 61 in the control system provided in Figure 6 includes a first detection module 611 and a first judgment sub-module 612, wherein the first detection module 611 is used for microwave transmission using XPIC The service is periodically detected, and the first judging sub-module 612 is used to judge whether the number of times the first detecting module 611 continuously detects faults is greater than the preset value. If it is greater than the preset value, the output judgment result is the microwave transmission business using XPIC If there is a fault, otherwise, the output judgment result is that the microwave transmission service using the XPIC is not faulty.

As shown in Figure 8, the fault processing module 63 in the control system provided in Figure 6 includes a second detection module 631, a third judgment module 632 and a fault processing sub-module 633, wherein the second detection module 631 is used to detect XPIC The power amplifier status of each ODU in the group, the third judging module 632 is used to judge whether to perform fault handling according to the detection result of the second detection module 631 and the preset fault handling principle. The preset fault handling principle can be: only keep the current XPIC The power amplifier of one ODU in the group is turned on, and the power amplifiers of other ODUs need to be turned off. The fault processing sub-module 633 is configured to keep the power amplifier of one ODU in the current XPIC group on and turn off the power amplifiers of the other ODUs in the XPIC group when the third judging module 632 judges that fault processing is required.

As shown in Figure 9, the control system using XPIC provided for another embodiment of the present invention not only includes the first judging module 61, the second judging module 62 and the fault processing module 63 shown in Fig. 6, but also includes a fourth Judging module 64 and business recovery module 65, wherein, the fourth judging module 64 is used for judging whether the preset business recovery mode is an automatic recovery mode; the business recovery module 65 is used for automatic recovery mode when the judgment result of the fourth judging module 64 , perform business recovery.

As shown in Figure 10, the business recovery module 65 in the control system provided in Figure 9 includes a third detection module 651, a fifth judgment module 652 and a business recovery sub-module 653, wherein the third detection module 651 is used to detect the application Whether the fault occurred in the microwave transmission service of XPIC disappears; the fifth judging module 652 is used to judge whether business recovery is needed according to the preset recovery principle, and the preset recovery principle can be: keep a mutual protection pair in the current XPIC group The power amplifier of one ODU in the pair of ODUs is turned on, and the power amplifier of the other ODU that is a mutual protection pair is turned off. The service recovery sub-module 653 is used to keep the power amplifier of one of the ODUs in the pair of outdoor units that are mutually protected in the current XPIC group as open when the judgment result of the fifth judgment module 652 is necessary, and turn on the power amplifier of the mutually protected pair. The power amplifier of another ODU is turned off.

On the one hand, the present invention achieves the purpose of selectively performing fault processing according to the user's wishes by manually setting the fault processing mode in advance. On the other hand, when the preset fault handling mode is non-disabling mode, and after the fault is detected, the fault is handled in a timely manner, which realizes the protection of microwave transmission services using XPIC and avoids insufficient microwave transmission services using XPIC technology Stable and reliable. Further, the present invention also achieves the purpose of selectively performing service recovery according to the user's wishes by artificially setting the service recovery mode in advance. If the preset service recovery mode is an automatic recovery mode, the service recovery .

The above content is a further detailed description of the present invention in conjunction with specific embodiments, and it cannot be assumed that the specific implementation of the present invention is limited to these descriptions. For those of ordinary skill in the technical field of the present invention, without departing from the concept of the present invention, some simple deduction or replacement can be made, which should be regarded as belonging to the protection scope of the present invention.

Claims (9)

1. A control method using a cross-polarization interference canceller, characterized in that, comprising: Determine whether the microwave transmission service using the cross-polarization interference canceller is faulty, and whether the preset fault handling mode is a non-disabled mode; If a fault occurs, and the preset fault handling mode is not disabled mode; Detect the power amplifier status of each outdoor unit in the cross-polarization interference canceller group; According to the preset fault handling principle, it is judged whether fault handling is required; If necessary, keep the power amplifier of one of the outdoor units in the current cross-polarization interference canceller group turned on, and turn off the power amplifiers of the other outdoor units in the cross-polarization interference canceller. 2. the control method of application cross-polarization interference canceller as claimed in claim 1, is characterized in that, the method for judging whether the microwave transmission service of application cross-polarization interference canceller breaks down comprises: Periodic detection of microwave transmission services using cross-polarization interference cancellers; Judging whether the number of consecutive fault detections is greater than a preset value; If it is greater than the preset value, the judgment result is that the microwave transmission service to which the cross-polarization interference canceller is applied fails. 3. The control method using a cross-polarization interference canceller according to claim 1 or 2, further comprising: judging whether the preset service recovery mode is an automatic recovery mode, and if so, performing service recovery. 4. the control method of applying cross-polarization interference canceller as claimed in claim 3, is characterized in that, the method for carrying out service restoration comprises: Detect whether the failure of the microwave transmission service using the cross-polarization interference canceller disappears; If it has disappeared, judge whether it is necessary to restore the business according to the preset recovery principle; If necessary, keep the power amplifier of one outdoor unit in a pair of outdoor units that are a mutual protection pair in the current cross-polarization interference canceller group turned on, and turn off the power amplifier of the other outdoor unit that is a mutual protection pair. 5. The control method of applying cross-polarization interference canceller as claimed in claim 3, characterized in that, the process of performing service recovery is automatically triggered after the failure disappears, or by setting a return timer, waiting for return timing Triggered after the timer times out. 6. A control system using a cross-polarization interference canceller, characterized in that it includes a first judging module, a second judging module and a failure processing module: The first judging module is used to judge whether the microwave transmission service using the cross-polarization interference canceller fails; The second judging module is used to judge whether the preset fault handling mode is a non-prohibited mode; The fault processing module includes a second detection module, a third judgment module and a fault processing sub-module, wherein, The second detection module is used to detect the status of each outdoor unit in the cross-polarization interference canceller group when the judgment result of the first judgment module is a failure, and the judgment result of the second judgment module is a non-disabled mode. Amplifier status; The third judging module is used to judge whether fault handling is required according to the power amplifier status of each outdoor unit detected by the second detecting module and the preset fault handling principle; The fault processing sub-module is used to keep the power amplifier of one of the outdoor units in the current cross-polarization interference canceller group turned on when the third judging module judges that fault processing is required, and turn the cross-polarization interference canceller power amplifiers of other outdoor units in the 7. the control system of application cross-polarization interference canceller as claimed in claim 6, is characterized in that, described first judgment module comprises first detection module and first judgment submodule; Wherein, The first detection module is used to periodically detect the microwave transmission service to which the cross-polarization interference canceller is applied; The first judging sub-module is used to judge whether the number of consecutive faults detected by the first detecting module is greater than a preset value, and if it is greater than the preset value, the output judgment result is microwave transmission using a cross-polarization interference canceller. Business is down. 8. The control system applying the cross-polarization interference canceller as claimed in claim 6 or 7, further comprising a fourth judging module and a service recovery module, wherein, The fourth judging module is used to judge whether the preset service recovery mode is an automatic recovery mode; The service recovery module is configured to perform service recovery when the determination result of the fourth determination module is the automatic recovery mode. 9. The control system applying the cross-polarization interference canceller as claimed in claim 8, wherein the service recovery module comprises a third detection module, a fifth judgment module and a service recovery sub-module, wherein, The third detection module is used to detect whether the failure of the microwave transmission service applying the cross-polarization interference canceller disappears; The fifth judging module is used to judge whether business restoration is required according to a preset restoration principle; The service recovery sub-module is used to reserve the power amplifier of one of the outdoor units in the pair of outdoor units that are mutually protected pairs in the current cross-polarization interference canceller group when the judgment result of the fifth judgment module is necessary. In the open state, turn off the power amplifier of the other outdoor unit that is a mutual protection pair.