CN102970697B - Exception detection method and device - Google Patents
Exception detection method and device Download PDFInfo
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- CN102970697B CN102970697B CN201110257596.XA CN201110257596A CN102970697B CN 102970697 B CN102970697 B CN 102970697B CN 201110257596 A CN201110257596 A CN 201110257596A CN 102970697 B CN102970697 B CN 102970697B
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Abstract
An embodiment of the invention provides an exception detection method and a device. The method includes that channel estimation is performed on first carrier waves carried by all business channels; signal to noise ratios of the first carrier waves carried by all the business channels are determined according to results of the channel estimation; and if the signal to noise ratios of the first carrier waves carried by all the business channels are larger than a preset first threshold value, a first alarming message is output, and the first alarming message instructs that the first carrier waves are subjected to same frequency interference. According to the exception detection method and the device, a technological means that the signal to noise ratios of the first carrier waves carried by all the business channels are determined according to results of the channel estimation, if the signal to noise ratios of the first carrier waves carried by all the business channels are larger than the preset first threshold value, and the first alarming message instructing that the first carrier waves are subjected to same frequency interference is output is used; and as all the business channels are detected, the accuracy of detection results is improved, and fault causes are further located.
Description
Technical field
The embodiment of the present invention relates to communication technical field, especially a kind of method for detecting abnormality and device.
Background technology
At TD SDMA (Time Division-Synchronous Code Division MultipleAccess, be called for short TD-SCDMA) wireless access network (the Radio AccessNetwork of mobile communication system, be called for short RAN) inner, remote radio unit (RRU) (Radio Remote Unit, be called for short RRU) be most important part, its structure is the most complicated, and operational environment is also worst, and the possibility therefore gone wrong also is maximum.Many factors all may affect it and normally work, as severe environment for use (long-term superhigh temperature/low temperature, be struck by lightning, drench with rain), device aging, face station interference, personal handhold telephone system (Personal Handy-phone System, be called for short PHS) interference, add the impact etc. of antenna-feedback system engineering construction, how effectively also reliably to detect its operating state just particularly important.
Smart antenna is the key technology of TD-SCDMA mobile communication system.By the beamforming technique based on smart antenna, effectively can suppress multi-user interference, increase power system capacity.The link design of antenna calibration is a closed-loop system, cover the almost whole links on RRU, comprise upstream radio-frequency service channel, up intermediate frequency service channel, descending intermediate frequency service channel, downlink radio frequency service channel, upstream radio-frequency calibrated channel, downlink radio frequency calibrated channel and downstream feedback passage.
The existing antenna calibration based on channel estimation method is abnormal judges it is inspection unit impulse response power, and what exceed thresholding for power reports channel abnormal alarm.But this abnormality detection mechanism detects based on the channel parameter of single channel single carrier wave, and testing result accuracy is lower, and cannot localizing faults reason further.
Summary of the invention
The embodiment of the present invention provides a kind of method for detecting abnormality and device, lower and cannot the problem of localizing faults reason further in order to solve existing abnormality detection mechanism testing result accuracy.
On the one hand, embodiments provide a kind of method for detecting abnormality, comprising:
Channel estimating is carried out to the first carrier that all service channels carry;
According to the result of described channel estimating, determine the signal to noise ratio of the first carrier of described all service channel carryings;
If the signal to noise ratio of the first carrier of described all service channel carryings all exceedes default first threshold, then export the first warning information, described first warning information indicates described first carrier to be subject to co-channel interference.
On the other hand, embodiments provide a kind of abnormal detector, comprising:
Channel estimation module, carries out channel estimating for the first carrier carried all service channels;
Parameter determination module, for the result according to described channel estimating, determines the signal to noise ratio of the first carrier of described all service channel carryings;
Detect alarm module, if all exceed default first threshold for the signal to noise ratio of the first carrier of described all service channel carryings, then export the first warning information, described first warning information indicates described first carrier to be subject to co-channel interference.
A technical scheme tool in above technical scheme has the following advantages or beneficial effect:
The embodiment of the present invention have employed the signal to noise ratio determining the first carrier that all service channels carry according to the result of channel estimating, if the signal to noise ratio of the first carrier of described all service channel carryings all exceedes default first threshold, then export the technological means that the described first carrier of instruction is subject to the first warning information of co-channel interference, owing to all detecting all service channels, improve the accuracy of testing result, and can localizing faults reason further.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The schematic flow sheet of a kind of method for detecting abnormality embodiment one that Fig. 1 provides for the embodiment of the present invention.
The schematic flow sheet of a kind of method for detecting abnormality embodiment two that Fig. 2 provides for the embodiment of the present invention.
The structural representation of a kind of abnormal detector embodiment that Fig. 3 provides for the embodiment of the present invention.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The schematic flow sheet of a kind of method for detecting abnormality embodiment one that Fig. 1 provides for the embodiment of the present invention.As shown in Figure 1, this embodiment comprises:
Step 101, channel estimating is carried out to the first carrier that all service channels carry;
Here all service channels comprise at least two service channels.Here service channel is except carrying described first carrier, and can also carry other carrier waves, the present embodiment is not construed as limiting this.
Particularly, carry out channel estimating and method of the prior art can be adopted to complete, such as linear time invariant (Linear Time Invariant is called for short LTI) system, suppose that primary signal is x (n), Received signal strength is
wherein, A represents the change of amplitude,
represent the change of phase place, the result h (n) of channel estimating can be expressed as:
Under ideal conditions, h (n) only has value when n=0, and other moment is 0.Real system is due to the impact by noise, time delay, frequency deviation and interference etc., and h (n) can present different features.
Step 102, result according to described channel estimating, determine the signal to noise ratio of the first carrier of described all service channel carryings;
If the detection window of service channel is long is w, then signal to noise ratio be the power of h (n) in detection window and deduct the power of h (n) outside detection window and, here concrete algorithm can adopt method of the prior art, and the present embodiment does not limit this.
If the signal to noise ratio of the first carrier of the described all service channel carryings of step 103 all exceedes default first threshold, then export the first warning information, described first warning information indicates described first carrier to be subject to co-channel interference.
Here first threshold can be determined according to system design parameters, generally can be set to 5 decibels (dB).
Inventor is realizing finding in process of the present invention: when being subject to strong co-channel interference when certain carrier wave, the signal to noise ratio carrying the service channel of this carrier wave there will be the phenomenon of deterioration.
The embodiment of the present invention have employed the signal to noise ratio determining the first carrier that all service channels carry according to the result of channel estimating, if the signal to noise ratio of the first carrier of described all service channel carryings all exceedes default first threshold, then export the technological means that the described first carrier of instruction is subject to the first warning information of co-channel interference, owing to all detecting all service channels, improve the accuracy of testing result, and can localizing faults reason further.
The schematic flow sheet of a kind of method for detecting abnormality embodiment two that Fig. 2 provides for the embodiment of the present invention.As shown in Figure 2, this embodiment comprises:
Step 201, generation original calibration signals sequence, send described original calibration signals sequence by the first carrier of the first calibrated channel carrying, all service channels receive respectively;
Here original calibration signals sequence x (n) generally chooses the good pseudo random sequence of autocorrelation, and its length is designated as L.Step 201 is the processes receiving calibration, the mode that reception calibration employing 1 calibrated channel is launched, multiple service channel receives simultaneously here, and the detection window that each service channel is corresponding is long is w.Particularly, described original calibration signals sequence is sent to splitter by the first calibrated channel, and splitter sends after this original calibration signals sequence is carried out shunt according to the quantity of service channel.
Step 202, by described original calibration signals sequence cyclic shift, form the calibrating signal sequence that described all service channels are corresponding;
In order to tell the channel estimation results of each service channel transmitting calibration from time domain, by channel cycle displacement, calibrating signal sequence corresponding to each service channel is formed to original calibration signals sequence.For example, suppose L=40, w=10, then the calibrating signal sequence of service channel 0 is x (0), x (1) ..., x (39), the calibrating signal sequence of service channel 1 is x (10), x (11) ..., x (39), x (0), x (1) ... x (9), by that analogy.
Step 203, sent the calibrating signal sequence of described correspondence respectively by the first carrier of described all service channels carrying, the first calibrated channel receives simultaneously;
Step 202 ~ 203 are processes of transmitting calibration, the mode that transmitting calibration here adopts multiple service channel to launch simultaneously, 1 calibrated channel receives.Particularly, before the first calibrated channel receives, the calibrating signal sequence that all service channels send first carries out conjunction road through mixer.It should be noted that, an execution can be selected in step 201 and step 202 ~ 203, namely only carries out reception calibration or transmitting calibration, also all can perform, under the scene all performed, not have certain sequencing relation between step 201 and step 202 ~ 203.
Step 204, channel estimating is carried out to the first carrier of described all service channels carrying;
Step 205, result according to described channel estimating, determine the signal to noise ratio of the first carrier of described all service channel carryings;
For example, the signal to noise ratio of service channel 0 equal the power in detection window and deduct detection window external noise power and, i.e. h (0) ~ h (w-1) power and with h (w) ~ h (L-1) power and difference, the rest may be inferred for the signal to noise ratio of other service channel.
If the signal to noise ratio of the first carrier of the described all service channel carryings of step 206 all exceedes default first threshold, then export the first warning information, described first warning information indicates described first carrier to be subject to co-channel interference.
Inventor is realizing finding in process of the present invention: when being subject to strong co-channel interference when certain carrier wave, the received noise power carrying the service channel of this carrier wave also can increase.Based on this, can also comprise the following steps after step 204:
According to the result of described channel estimating, determine the received noise power of the first carrier of described all service channel carryings;
If the received noise power of the first carrier of described all service channel carryings all exceedes default Second Threshold, then export described first warning information.
Here received noise power equals the noise power sum outside detection window.For example, the received noise power of service channel 0 equal h (w) ~ h (L-1) power and.Here Second Threshold can be determined according to system design parameters, generally can be set to transmitting scaled power and deduct 20 decibels of millis (dBm).
It should be noted that, in application, also can not perform step 205,206, only perform after step 204 and above-mentionedly determine received noise power and judge whether abnormal step according to received noise power, the present embodiment is not construed as limiting this.
Inventor is realizing also finding in process of the present invention: when the intermediate-frequency channel chain-circuit time delay difference of certain carrier wave is excessive, during such as more than 1/2 chip (chip), then desirable peak point position can be departed from the position of its power peak point.Based on this, can also comprise after step 204:
According to the result of described channel estimating, determine the power peak position of the first carrier of described all service channel carryings;
If the power peak position of the first carrier of the first service channel carrying is different from the pre-set peak value position of described first service channel in described all service channels, then export the second warning information, the intermediate-frequency channel chain-circuit time delay difference of described first service channel of described second warning information instruction is excessive.
Here pre-set peak value position and desirable peak point position are the n value that h (n) power maximum in detection window is corresponding.Further, power peak position is only relevant with service channel, is correlated with particularly with service channel identification number (k), and that is, for a service channel, the power peak position of arbitrary carrier wave of its carrying is all identical.For example, under ideal conditions, for service channel k, h (n) is only non-zero value when n=w*k, if in detection window | h (w*k+1) | ~ | h (w*k+w-1) | the power of any point is greater than | h (w*k) |, then think that peak is abnormal, export described second warning information.
In the normotopic situation of power peak, abnormality detection further can also be carried out.Particularly, if the power peak position of the first carrier of described first service channel carrying is identical with the pre-set peak value position of described first service channel, then this embodiment also comprises:
According to the result of described channel estimating, determine power peak and the power minor peaks of the first carrier of described first service channel carrying;
If the power peak of first carrier and the difference of power minor peaks of described first service channel carrying are less than the 3rd default threshold value, then export the 3rd warning information, the chain-circuit time delay that described 3rd warning information instruction does not compensate the first carrier of described first service channel carrying is poor.
Inventor is realizing finding in process of the present invention: under long wire jumper scene, because calibration loopback delay changes, if non-compensate for link delay inequality, peak power ratio can be caused abnormal.Here the power peak in peak power ratio and detection window and the difference of power minor peaks.For example, for service channel k, | h (w*k) | be its power peak, | h (w*k+1) | ~ | h (w*k+w-1) | middle maximum power is its power time peak, if the two difference is less than the 3rd threshold value, thinks abnormal, export described 3rd warning information.Here the 3rd threshold value generally can be set to 6dB.
Alternatively, if the power peak position of the first carrier of described first service channel carrying is identical with the pre-set peak value position of described first service channel, then this embodiment can also comprise:
According to the result of described channel estimating, determine the power peak of first carrier of described first service channel carrying and detection window internal power and;
If described first service channel carrying first carrier detection window internal power and exceed the 4th default threshold value with the difference of power peak, then export the 4th warning information, the first carrier of the described first service channel carrying of described 4th warning information instruction is subject to co-channel interference.
Inventor is realizing finding in process of the present invention: when being subject to strongly disturbing when certain carrier wave, may show peak value and received total wideband power (Received Total Wideband Power is called for short RTWP) ratio exception.Here peak value and the difference of RTWP than the RTWP equaled in power peak and detection window.For passage k, power peak is | h (w*k) |, RTWP be h (w*k) ~ h (w*k+w-1) power and, if the two difference is less than the 4th threshold value, thinks abnormal, export described 4th warning information.Here the 4th threshold value generally can be set to 5dB.
Alternatively, if the power peak position of the first carrier of described first service channel carrying is identical with the pre-set peak value position of described first service channel, and described first service channel also carries at least one second carrier wave except described first carrier, then this embodiment can also comprise:
Channel estimating is carried out at least one second carrier wave described in described first service channel carrying;
According to the result of described channel estimating, determine the power peak position of at least one second carrier wave described of described first service channel carrying;
If the power peak position of at least one second carrier wave described of described first service channel carrying is all identical with the pre-set peak value position of described first service channel, then determine the described described first carrier of the first service channel carrying and the peak power of at least one the second carrier wave described;
If the difference of maximum power and minimum power exceedes the 5th default threshold value in described peak power, then export the 5th warning information, the isolation of described first service channel of described 5th warning information instruction is abnormal.
Inventor is realizing finding in process of the present invention: when the isolation when between the calibrated channel and service channel of RRU is abnormal, loopback signal and inner couplings signal are formed vector superposed, phase difference between the inner couplings signal of different frequent points and loopback signal is different, cause the calibration value of each carrier wave of the problematic service channel of isolation to differ greatly, namely in service channel, the calibration power of each intercarrier exceedes thresholding.For example, if service channel k carries multiple carrier wave, | h (w*k) | be the unit impulse response power of each carrier wave on service channel k, if the difference of maximum power and minimum power is more than the 5th threshold value, then think that intercarrier extreme power is than abnormal, exports described 5th warning information.Here unit impulse response power is performance number corresponding to pre-set peak value position, and equal power peak when power peak position is normal, the 5th threshold value generally can be set to 7dB.
If the power peak position of all carrier waves of certain service channel carrying is all abnormal, but the skew of the peak point position of its relative ideal is identical, such as service channel k, when desirable peak point position is n=w*k, and the power peak position of multiple carrier waves that service channel k carries is n=w*k+1, then also can according to above-mentioned intercarrier extreme power than the isolation detecting service channel.Particularly, if the power peak position of the first carrier of described first service channel carrying is different from the pre-set peak value position of described first service channel, and described first service channel also carries at least one second carrier wave except described first carrier, then this embodiment can also comprise:
Channel estimating is carried out at least one second carrier wave described in described first service channel carrying;
According to the result of described channel estimating, determine the power peak position of at least one second carrier wave described of described first service channel carrying;
If the power peak position of at least one second carrier wave described of described first service channel carrying is all different from the pre-set peak value position of described first service channel, and described first carrier is identical relative to offseting of described pre-set peak value position with the power peak position of at least one the second carrier wave, then determine the described described first carrier of the first service channel carrying and the peak power of at least one the second carrier wave described;
If the difference of maximum power and minimum power exceedes the 5th default threshold value in described peak power, then export the 5th warning information, the isolation of described first service channel of described 5th warning information instruction is abnormal.
Alternatively, if the pre-set peak value position of power peak position all with corresponding of the first carrier of described all service channel carryings is identical, then also comprise:
According to the result of described channel estimating, determine the peak power of the first carrier of described all service channel carryings, and calculate the mean value of described peak power;
If the peak power of first carrier of the second service channel carrying and the absolute value of the difference of described mean value exceed the 6th default threshold value in described all service channels, then export the 6th warning information, described second service channel of described 6th warning information instruction is abnormal.
Inventor is realizing finding in process of the present invention: under identical configuration, calibration power between service channel should be substantially identical, therefore can according to power peak interchannel extreme value and average power, namely each service channel calibration power of each carrier wave and each service channel calibrate the difference of average power, carry out abnormality detection.Here calibration power and unit impulse response power.For example, for first carrier, if the difference carrying the calibration power average of certain service channel calibration power of this first carrier and the service channel of all this first carriers of carrying more than the 6th threshold value, is then thought that this service channel is abnormal, is exported described 6th warning information.Here the 6th threshold value generally can be set to 4dB.
Further, also find realizing inventor in process of the present invention: when the radio-frequency channel exception of certain service channel or RF cable connect abnormal, then most typical feature is that unit impact impulse response is obviously less than normal.Based on this, if the power peak position of the first carrier of described first service channel carrying is identical with the pre-set peak value position of described first service channel, then this embodiment can also comprise:
According to the result of described channel estimating, determine the peak power of the first carrier of described first service channel carrying;
If described peak power exceedes the 7th default threshold value, then export the 7th warning information, radio-frequency channel exception or the RF cable of described first service channel of described 7th warning information instruction connect abnormal.
For example, for service channel 0, if the power of unit impulse response h (0) | h (0) | more than the 7th threshold value, then think that the power of unit impulse response is abnormal, export described 7th warning information.Here the 7th threshold value generally can be set to 10dB.
It should be noted that, the above-mentioned reference value only giving the first ~ seven threshold value, can adjust these threshold values according to system design parameters in application, the present embodiment does not limit this.
In the present embodiment, antenna calibration is except the needs meeting wave beam forming, can also be used for the co-channel interference, RRU hardware fault, engineering construction fault etc. that detect between many base stations simultaneously, for example, RRU hardware fault may cause above-mentioned seven kinds of alarms, and engineering construction fault mainly can cause output the 7th warning information.
Unit impulse response power only based on channel estimation method in prior art carries out abnormality detection to antenna calibration, and what exceed thresholding for power reports channel abnormal alarm.There is following defect in this testing mechanism: first, the difference in engineering practice of construction do not allow detection threshold to arrange too strict, otherwise because engineering difference cause a large amount of mistake alarms, perception and the satisfaction of client can be had a strong impact on; Secondly, excessive detection threshold then can shield and cover a large amount of exceptions, to cause when normally carrying out business, but without any alarm, also having a strong impact on perception and the satisfaction of client.By above-mentioned Through Several Survey Measure combination in any, by analyzing the channel estimation results of antenna calibration further, effectively can recognize the out of order true and false, reducing the False Rate of equipment and missing total Return Ratio, and out of order reason can be located in the present embodiment.
The embodiment of the present invention have employed the signal to noise ratio determining the first carrier that all service channels carry according to the result of channel estimating, if the signal to noise ratio of the first carrier of described all service channel carryings all exceedes default first threshold, then export the technological means that the described first carrier of instruction is subject to the first warning information of co-channel interference, owing to all detecting all service channels, improve the accuracy of testing result, and can localizing faults reason further.
The structural representation of a kind of abnormal detector embodiment that Fig. 3 provides for the embodiment of the present invention.As shown in Figure 3, this device comprises:
Channel estimation module 31, carries out channel estimating for the first carrier carried all service channels;
Parameter determination module 32, for the result according to described channel estimating, determines the signal to noise ratio of the first carrier of described all service channel carryings;
Detect alarm module 33, if all exceed default first threshold for the signal to noise ratio of the first carrier of described all service channel carryings, then export the first warning information, described first warning information indicates described first carrier to be subject to co-channel interference.
In an optional embodiment of the present invention, parameter determination module 32 also for, according to the result of described channel estimating, determine the received noise power of the first carrier of described all service channel carrying;
Described detection alarm module also for, if the received noise power of the first carrier of described all service channel carrying all exceedes default Second Threshold, then export described first warning information.
In another alternative embodiment of the present invention, parameter determination module 32 also for, according to the result of described channel estimating, determine the power peak position of the first carrier of described all service channel carrying;
Detect alarm module 32 also for, if the power peak position of the first carrier of the first service channel carrying is different from the pre-set peak value position of described first service channel in described all service channels, then export the second warning information, the intermediate-frequency channel chain-circuit time delay difference of described first service channel of described second warning information instruction is excessive.
In another alternative embodiment of the present invention, if the power peak position of the first carrier of described first service channel carrying is identical with the pre-set peak value position of described first service channel, then
Parameter determination module 32 also for, according to the result of described channel estimating, determine the power peak of first carrier and the power minor peaks of described first service channel carrying;
Detect alarm module 33 also for, if the power peak of first carrier and the difference of power minor peaks of described first service channel carrying are less than the 3rd default threshold value, then export the 3rd warning information, the chain-circuit time delay that described 3rd warning information instruction does not compensate the first carrier of described first service channel carrying is poor.
In another alternative embodiment of the present invention, if the power peak position of the first carrier of described first service channel carrying is identical with the pre-set peak value position of described first service channel, then
Parameter determination module 32 also for, according to the result of described channel estimating, determine the power peak of first carrier of described first service channel carrying and detection window internal power and;
Detect alarm module 33 also for, if described first service channel carrying first carrier detection window internal power and exceed the 4th default threshold value with the difference of power peak, then export the 4th warning information, the first carrier of the described first service channel carrying of described 4th warning information instruction is subject to co-channel interference.
In another alternative embodiment of the present invention, if the power peak position of the first carrier of described first service channel carrying is identical with the pre-set peak value position of described first service channel, and described first service channel also carries at least one second carrier wave except described first carrier, then
Channel estimation module 31 also for, to described first service channel carrying described at least one second carrier wave carry out channel estimating;
Parameter determination module 32 also for, according to the result of described channel estimating, determine the power peak position of at least one the second carrier wave described of described first service channel carrying; If the power peak position of at least one second carrier wave described of described first service channel carrying is all identical with the pre-set peak value position of described first service channel, then determine the described described first carrier of the first service channel carrying and the peak power of at least one the second carrier wave described;
Detect alarm module 33 also for, if the difference of the maximum power in described peak power and minimum power exceedes the 5th default threshold value, then export the 5th warning information, the isolation of described first service channel of described 5th warning information instruction is abnormal.
In another alternative embodiment of the present invention, if the power peak position of the first carrier of described first service channel carrying is different from the pre-set peak value position of described first service channel, and described first service channel also carries at least one second carrier wave except described first carrier, then
Channel estimation module 31 also for, to described first service channel carrying described at least one second carrier wave carry out channel estimating;
Parameter determination module 32 also for, according to the result of described channel estimating, determine the power peak position of at least one the second carrier wave described of described first service channel carrying; If the power peak position of at least one second carrier wave described of described first service channel carrying is all different from the pre-set peak value position of described first service channel, and described first carrier is identical relative to offseting of described pre-set peak value position with the power peak position of at least one the second carrier wave, then determine the described described first carrier of the first service channel carrying and the peak power of at least one the second carrier wave described;
Detect alarm module 33 also for, if the difference of maximum power and minimum power exceedes the 5th default threshold value in described peak power, then export the 5th warning information, the isolation of described first service channel of described 5th warning information instruction is abnormal.
In another alternative embodiment of the present invention, if the pre-set peak value position of power peak position all with corresponding of the first carrier of described all service channel carryings is identical, then
Parameter determination module 32 also for, according to the result of described channel estimating, determine the peak power of the first carrier of described all service channel carrying, and calculate the mean value of the peak power of the first carrier of described all service channel carryings;
Detect alarm module 33 also for, if the peak power of first carrier of the second service channel carrying and the absolute value of the difference of described mean value exceed the 6th default threshold value in described all service channels, then export the 6th warning information, described second service channel of described 6th warning information instruction is abnormal.
In another alternative embodiment of the present invention, if the power peak position of the first carrier of described first service channel carrying is identical with the pre-set peak value position of described first service channel, then
Parameter determination module 32 also for, according to the result of described channel estimating, determine the peak power of first carrier of described first service channel carrying;
Detect alarm module 33 also for, if described peak power exceedes the 7th default threshold value, then export the 7th warning information, the described 7th warning information instruction radio-frequency channel exception of described first service channel or RF cable connect abnormal.
In another alternative embodiment of the present invention, this device also comprises:
Receive calibration module 34, for generating original calibration signals sequence, send described original calibration signals sequence by the first carrier of the first calibrated channel carrying, described all service channels receive respectively; And/or
Transmitting calibration module 35, for by described original calibration signals sequence cyclic shift, form the calibrating signal sequence that all service channels are corresponding, sent the calibrating signal sequence of described correspondence respectively by the first carrier of described all service channel carryings, the first calibrated channel receives simultaneously.
A kind of method for detecting abnormality embodiment one or two that the specific implementation of the present embodiment provides with reference to the embodiment of the present invention.The embodiment of the present invention have employed the signal to noise ratio determining the first carrier that all service channels carry according to the result of channel estimating, if the signal to noise ratio of the first carrier of described all service channel carryings all exceedes default first threshold, then export the technological means that the described first carrier of instruction is subject to the first warning information of co-channel interference, owing to all detecting all service channels, improve the accuracy of testing result, and can localizing faults reason further.
One of ordinary skill in the art will appreciate that: all or part of step realizing said method embodiment can have been come by the hardware that program command is relevant, aforesaid program can be stored in a computer read/write memory medium, this program, when performing, performs the step comprising said method embodiment; And aforesaid storage medium comprises: ROM, RAM, magnetic disc or CD etc. various can be program code stored medium.
Last it is noted that above embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (18)
1. a method for detecting abnormality, is characterized in that, comprising:
Channel estimating is carried out to the first carrier that all service channels carry;
According to the result of described channel estimating, determine the signal to noise ratio of the first carrier of described all service channel carryings;
If the signal to noise ratio of the first carrier of described all service channel carryings all exceedes default first threshold, then export the first warning information, described first warning information indicates described first carrier to be subject to co-channel interference;
Wherein, the described first carrier carried all service channels also comprises after carrying out channel estimating:
According to the result of described channel estimating, determine the power peak position of the first carrier of described all service channel carryings;
If the power peak position of the first carrier of the first service channel carrying is different from the pre-set peak value position of described first service channel in described all service channels, then export the second warning information, the intermediate-frequency channel chain-circuit time delay difference of described first service channel of described second warning information instruction is excessive.
2. method according to claim 1, is characterized in that, the described first carrier carried all service channels also comprises after carrying out channel estimating:
According to the result of described channel estimating, determine the received noise power of the first carrier of described all service channel carryings;
If the received noise power of the first carrier of described all service channel carryings all exceedes default Second Threshold, then export described first warning information.
3. method according to claim 1, is characterized in that, if the power peak position of the first carrier of described first service channel carrying is identical with the pre-set peak value position of described first service channel, then also comprises:
According to the result of described channel estimating, determine power peak and the power minor peaks of the first carrier of described first service channel carrying;
If the power peak of first carrier and the difference of power minor peaks of described first service channel carrying are less than the 3rd default threshold value, then export the 3rd warning information, the chain-circuit time delay that described 3rd warning information instruction does not compensate the first carrier of described first service channel carrying is poor.
4. method according to claim 1, is characterized in that, if the power peak position of the first carrier of described first service channel carrying is identical with the pre-set peak value position of described first service channel, then also comprises:
According to the result of described channel estimating, determine the power peak of first carrier of described first service channel carrying and detection window internal power and;
If described first service channel carrying first carrier detection window internal power and exceed the 4th default threshold value with the difference of power peak, then export the 4th warning information, the first carrier of the described first service channel carrying of described 4th warning information instruction is subject to co-channel interference.
5. method according to claim 1, it is characterized in that, if the power peak position of the first carrier of described first service channel carrying is identical with the pre-set peak value position of described first service channel, and described first service channel also carries at least one second carrier wave except described first carrier, then also comprise:
Channel estimating is carried out at least one second carrier wave described in described first service channel carrying;
According to the result of described channel estimating, determine the power peak position of at least one second carrier wave described of described first service channel carrying;
If the power peak position of at least one second carrier wave described of described first service channel carrying is all identical with the pre-set peak value position of described first service channel, then determine the described described first carrier of the first service channel carrying and the peak power of at least one the second carrier wave described;
If the difference of maximum power and minimum power exceedes the 5th default threshold value in described peak power, then export the 5th warning information, the isolation of described first service channel of described 5th warning information instruction is abnormal.
6. method according to claim 1, it is characterized in that, if the power peak position of the first carrier of described first service channel carrying is different from the pre-set peak value position of described first service channel, and described first service channel also carries at least one second carrier wave except described first carrier, then also comprise:
Channel estimating is carried out at least one second carrier wave described in described first service channel carrying;
According to the result of described channel estimating, determine the power peak position of at least one second carrier wave described of described first service channel carrying;
If the power peak position of at least one second carrier wave described of described first service channel carrying is all different from the pre-set peak value position of described first service channel, and described first carrier is identical relative to offseting of described pre-set peak value position with the power peak position of at least one the second carrier wave, then determine the described described first carrier of the first service channel carrying and the peak power of at least one the second carrier wave described;
If the difference of maximum power and minimum power exceedes the 5th default threshold value in described peak power, then export the 5th warning information, the isolation of described first service channel of described 5th warning information instruction is abnormal.
7. method according to claim 1, is characterized in that, if the pre-set peak value position of power peak position all with corresponding of the first carrier of described all service channel carryings is identical, then also comprises:
According to the result of described channel estimating, determine the peak power of the first carrier of described all service channel carryings, and calculate the mean value of described peak power;
If the peak power of first carrier of the second service channel carrying and the absolute value of the difference of described mean value exceed the 6th default threshold value in described all service channels, then export the 6th warning information, described second service channel of described 6th warning information instruction is abnormal.
8. method according to claim 1, is characterized in that, if the power peak position of the first carrier of described first service channel carrying is identical with the pre-set peak value position of described first service channel, then also comprises:
According to the result of described channel estimating, determine the peak power of the first carrier of described first service channel carrying;
If described peak power exceedes the 7th default threshold value, then export the 7th warning information, radio-frequency channel exception or the RF cable of described first service channel of described 7th warning information instruction connect abnormal.
9. method according to claim 1, is characterized in that, the described first carrier carried all service channels also comprises before carrying out channel estimating:
Generate original calibration signals sequence, send described original calibration signals sequence by the first carrier of the first calibrated channel carrying, described all service channels receive respectively; And/or
By described original calibration signals sequence cyclic shift, form the calibrating signal sequence that described all service channels are corresponding, sent the calibrating signal sequence of described correspondence respectively by the first carrier of described all service channel carryings, the first calibrated channel receives simultaneously.
10. an abnormal detector, is characterized in that, comprising:
Channel estimation module, carries out channel estimating for the first carrier carried all service channels;
Parameter determination module, for the result according to described channel estimating, determines the signal to noise ratio of the first carrier of described all service channel carryings;
Detect alarm module, if all exceed default first threshold for the signal to noise ratio of the first carrier of described all service channel carryings, then export the first warning information, described first warning information indicates described first carrier to be subject to co-channel interference;
Wherein, described parameter determination module also for, according to the result of described channel estimating, determine the power peak position of the first carrier of described all service channel carrying;
Described detection alarm module also for, if the power peak position of the first carrier of the first service channel carrying is different from the pre-set peak value position of described first service channel in described all service channels, then export the second warning information, the intermediate-frequency channel chain-circuit time delay difference of described first service channel of described second warning information instruction is excessive.
11. devices according to claim 10, is characterized in that, described parameter determination module also for, according to the result of described channel estimating, determine the received noise power of the first carrier of described all service channel carrying;
Described detection alarm module also for, if the received noise power of the first carrier of described all service channel carrying all exceedes default Second Threshold, then export described first warning information.
12. devices according to claim 10, is characterized in that, if the power peak position of the first carrier of described first service channel carrying is identical with the pre-set peak value position of described first service channel, then
Described parameter determination module also for, according to the result of described channel estimating, determine the power peak of first carrier and the power minor peaks of described first service channel carrying;
Described detection alarm module also for, if the power peak of first carrier and the difference of power minor peaks of described first service channel carrying are less than the 3rd default threshold value, then export the 3rd warning information, the chain-circuit time delay that described 3rd warning information instruction does not compensate the first carrier of described first service channel carrying is poor.
13. devices according to claim 10, is characterized in that, if the power peak position of the first carrier of described first service channel carrying is identical with the pre-set peak value position of described first service channel, then
Described parameter determination module also for, according to the result of described channel estimating, determine the power peak of first carrier of described first service channel carrying and detection window internal power and;
Described detection alarm module also for, if described first service channel carrying first carrier detection window internal power and exceed the 4th default threshold value with the difference of power peak, then export the 4th warning information, the first carrier of the described first service channel carrying of described 4th warning information instruction is subject to co-channel interference.
14. devices according to claim 10, it is characterized in that, if the power peak position of the first carrier of described first service channel carrying is identical with the pre-set peak value position of described first service channel, and described first service channel also carries at least one second carrier wave except described first carrier, then
Described channel estimation module also for, to described first service channel carrying described at least one second carrier wave carry out channel estimating;
Described parameter determination module also for, according to the result of described channel estimating, determine the power peak position of at least one the second carrier wave described of described first service channel carrying; If the power peak position of at least one second carrier wave described of described first service channel carrying is all identical with the pre-set peak value position of described first service channel, then determine the described described first carrier of the first service channel carrying and the peak power of at least one the second carrier wave described;
Described detection alarm module also for, if the difference of the maximum power in described peak power and minimum power exceedes the 5th default threshold value, then export the 5th warning information, the isolation of described first service channel of described 5th warning information instruction is abnormal.
15. devices according to claim 10, it is characterized in that, if the power peak position of the first carrier of described first service channel carrying is different from the pre-set peak value position of described first service channel, and described first service channel also carries at least one second carrier wave except described first carrier, then
Described channel estimation module also for, to described first service channel carrying described at least one second carrier wave carry out channel estimating;
Described parameter determination module also for, according to the result of described channel estimating, determine the power peak position of at least one the second carrier wave described of described first service channel carrying; If the power peak position of at least one second carrier wave described of described first service channel carrying is all different from the pre-set peak value position of described first service channel, and described first carrier is identical relative to offseting of described pre-set peak value position with the power peak position of at least one the second carrier wave, then determine the described described first carrier of the first service channel carrying and the peak power of at least one the second carrier wave described;
Described detection alarm module also for, if the difference of maximum power and minimum power exceedes the 5th default threshold value in described peak power, then export the 5th warning information, the isolation of described first service channel of described 5th warning information instruction is abnormal.
16. devices according to claim 10, is characterized in that, if the pre-set peak value position of power peak position all with corresponding of the first carrier of described all service channel carryings is identical, then
Described parameter determination module also for, according to the result of described channel estimating, determine the peak power of the first carrier of described all service channel carrying, and calculate the mean value of the peak power of the first carrier of described all service channel carryings;
Described detection alarm module also for, if the peak power of first carrier of the second service channel carrying and the absolute value of the difference of described mean value exceed the 6th default threshold value in described all service channels, then export the 6th warning information, described second service channel of described 6th warning information instruction is abnormal.
17. devices according to claim 10, is characterized in that, if the power peak position of the first carrier of described first service channel carrying is identical with the pre-set peak value position of described first service channel, then
Described parameter determination module also for, according to the result of described channel estimating, determine the peak power of first carrier of described first service channel carrying;
Described detection alarm module also for, if described peak power exceedes the 7th default threshold value, then export the 7th warning information, the described 7th warning information instruction radio-frequency channel exception of described first service channel or RF cable connect abnormal.
18. devices according to claim 10, is characterized in that, also comprise:
Receive calibration module, for generating original calibration signals sequence, send described original calibration signals sequence by the first carrier of the first calibrated channel carrying, described all service channels receive respectively; And/or
Transmitting calibration module, for by described original calibration signals sequence cyclic shift, form the calibrating signal sequence that all service channels are corresponding, sent the calibrating signal sequence of described correspondence respectively by the first carrier of described all service channel carryings, the first calibrated channel receives simultaneously.
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| CN113765603A (en) | 2020-06-04 | 2021-12-07 | 瑞昱半导体股份有限公司 | Control apparatus and method for multi-antenna wireless communication system |
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| CN1767407A (en) * | 2005-11-30 | 2006-05-03 | 中兴通讯股份有限公司 | Method for improving user device channel estimating performance |
| CN101729465A (en) * | 2008-10-15 | 2010-06-09 | 大唐移动通信设备有限公司 | Method and device for measuring signal to noise ratio and application thereof |
| CN102142907A (en) * | 2010-01-28 | 2011-08-03 | 大唐移动通信设备有限公司 | Method and device for detecting radio frequency channels |
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| CN1767407A (en) * | 2005-11-30 | 2006-05-03 | 中兴通讯股份有限公司 | Method for improving user device channel estimating performance |
| CN101729465A (en) * | 2008-10-15 | 2010-06-09 | 大唐移动通信设备有限公司 | Method and device for measuring signal to noise ratio and application thereof |
| CN102142907A (en) * | 2010-01-28 | 2011-08-03 | 大唐移动通信设备有限公司 | Method and device for detecting radio frequency channels |
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