CN102970697A - Exception detection method and device - Google Patents
Exception detection method and device Download PDFInfo
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- CN102970697A CN102970697A CN201110257596XA CN201110257596A CN102970697A CN 102970697 A CN102970697 A CN 102970697A CN 201110257596X A CN201110257596X A CN 201110257596XA CN 201110257596 A CN201110257596 A CN 201110257596A CN 102970697 A CN102970697 A CN 102970697A
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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 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 Multiple Access, abbreviation TD-SCDMA) wireless access network (the Radio Access Network 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 also is worst, and the possibility that therefore goes wrong also is maximum.Many factors all may affect its normal operation, such as abominable environment for use (long-term superhigh temperature/low temperature, be struck by lightning, drench with rain etc.), device aging, face that disturb at the station, personal handhold telephone system (Personal Handy-phone System, be called for short PHS) disturb, add the impact of antenna-feedback system engineering construction etc., it is just particularly important how effectively also to detect reliably its operating state.
Smart antenna is the key technology of TD-SCDMA mobile communication system.By the wave beam forming technology based on smart antenna, can effectively 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 the RRU, comprised up radio service passage, up intermediate frequency service channel, descending intermediate frequency service channel, downlink radio frequency service channel, up RF calibration passage, downlink radio frequency calibrated channel and downstream feedback passage.
Existing antenna calibration based on channel estimation method is unusual judges it is inspection unit impulse response power, reports the channel abnormal alarm for what power surpassed thresholding.But the channel parameter that this abnormality detection mechanism is based on the single channel single carrier wave detects, and the testing result accuracy is lower, and can't locate further failure cause.
Summary of the invention
The embodiment of the invention provides a kind of method for detecting abnormality and device, and is lower and can't further locate the problem of failure cause in order to solve existing abnormality detection mechanism testing result accuracy.
On the one hand, the embodiment of the invention provides a kind of method for detecting abnormality, comprising:
First carrier to all service channel carryings carries out channel estimating;
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 is then exported the first warning information all above default first threshold, described the first warning information indicates described first carrier to be subject to co-channel interference.
On the other hand, the embodiment of the invention provides a kind of abnormal detector, comprising:
Channel estimation module is used for the first carrier of all service channel carryings is carried out channel estimating;
The parameter determination module is used 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, all surpass the first threshold of presetting if be used for the signal to noise ratio of the first carrier of described all service channels carryings, then export the first warning information, described the first warning information indicates described first carrier to be subject to co-channel interference.
A technical scheme in the above technical scheme has following advantage or beneficial effect:
The embodiment of the invention has adopted the signal to noise ratio of determining the first carrier of all service channel carryings according to the result of channel estimating, if the signal to noise ratio of the first carrier of described all service channel carryings is all above default first threshold, then the described first carrier of output indication is subject to the technological means of the first warning information of co-channel interference, because all service channels are all detected, improve the accuracy of testing result, and can locate further failure cause.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, the below will do one to the accompanying drawing of required use in embodiment or the description of the Prior Art and introduce simply, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The schematic flow sheet of a kind of method for detecting abnormality embodiment one that Fig. 1 provides for the embodiment of the invention.
The schematic flow sheet of a kind of method for detecting abnormality embodiment two that Fig. 2 provides for the embodiment of the invention.
The structural representation of a kind of abnormal detector embodiment that Fig. 3 provides for the embodiment of the invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
The schematic flow sheet of a kind of method for detecting abnormality embodiment one that Fig. 1 provides for the embodiment of the invention.As shown in Figure 1, this embodiment comprises:
All service channels here comprise at least two service channels.The service channel here can also carry other carrier waves except carrying described first carrier, and present embodiment is not construed as limiting this.
Particularly, carry out channel estimating and can adopt method of the prior art to finish, such as for linear time invariant (Linear Time Invariant is called for short LTI) system, suppose that primary signal is x (n), the reception signal is
Wherein, A represents the variation of amplitude,
The variation of expression phase place, the as a result h (n) of channel estimating can be expressed as:
Under the ideal conditions, h (n) only has value when n=0, and other is 0 constantly.Real system is owing to be subjected to the impact of noise, time delay, frequency deviation and interference etc., and h (n) can present different features.
If the detection window of service channel is long to be w, then signal to noise ratio be the power of h (n) in detection window and deduct the power of h (n) detection window outside with, concrete algorithm can adopt method of the prior art here, present embodiment is not done restriction to this.
If the signal to noise ratio of the first carrier of described all the service channel carryings of step 103 is then exported the first warning information all above default first threshold, described the first warning information indicates described first carrier to be subject to co-channel interference.
The first threshold here can be determined according to system design parameters, generally can be made as 5 decibels (dB).
The inventor finds in realizing process of the present invention: when certain carrier wave is subject to strong co-channel interference, carry the phenomenon that the signal to noise ratio of the service channel of this carrier wave can occur worsening.
The embodiment of the invention has adopted the signal to noise ratio of determining the first carrier of all service channel carryings according to the result of channel estimating, if the signal to noise ratio of the first carrier of described all service channel carryings is all above default first threshold, then the described first carrier of output indication is subject to the technological means of the first warning information of co-channel interference, because all service channels are all detected, improve the accuracy of testing result, and can locate further failure cause.
The schematic flow sheet of a kind of method for detecting abnormality embodiment two that Fig. 2 provides for the embodiment of the invention.As shown in Figure 2, this embodiment comprises:
Step 201, generation original calibrated burst, the first carrier that carries by the first calibrated channel sends described original calibrated burst, and all service channels receive respectively;
The original calibrated burst x (n) here generally chooses the good pseudo random sequence of autocorrelation, and its length is designated as L.Step 201 is to receive the process of calibrating, the mode that the reception calibration here adopts 1 calibrated channel emission, a plurality of service channel to receive simultaneously, and the detection window that each service channel is corresponding is long to be w.Particularly, the first calibrated channel sends to splitter with described original calibrated burst, and splitter carries out this original calibrated burst to send after the shunt according to the quantity of service channel.
Step 202, with described original calibrated burst cyclic shift, form calibrating signal sequence corresponding to described all service channels;
In order to tell the channel estimation results of each service channel transmitting calibration from time domain, the original calibrated burst is formed calibrating signal sequence corresponding to each service channel by the channel cycle displacement.For instance, suppose L=40, w=10, then the calibrating signal sequence of service channel 0 be x (0), x (1) ..., x (39), the calibrating signal sequence of service channel 1 be x (10), x (11) ..., x (39), x (0), x (1) ... x (9), by that analogy.
Step 203, send respectively the calibrating signal sequence of described correspondence by the first carrier of described all service channels carrying, the first calibrated channel receives simultaneously;
The mode that a plurality of service channels are launched simultaneously, 1 calibrated channel receives is adopted in step 202～203rd, the process of transmitting calibration, the transmitting calibration here.Particularly, before the first calibrated channel received, the calibrating signal sequence that all service channels send was closed the road through mixer first.Need to prove that an execution can be selected in step 201 and step 202～203, namely only receive calibration or transmitting calibration, also can all carry out, under the scene of all carrying out, do not have certain sequencing relation between step 201 and step 202～203.
Step 204, the first carrier that described all service channels are carried carry out channel estimating;
Step 205, according to the result of described channel estimating, determine the signal to noise ratio of the first carrier of described all service channels carrying;
For instance, the signal to noise ratio of service channel 0 equal the power in the detection window and deduct detection window external noise power and, be h (0)～h (w-1) power and with h (w)～h (L-1) power and poor, 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 described all the service channel carryings of step 206 is then exported the first warning information all above default first threshold, described the first warning information indicates described first carrier to be subject to co-channel interference.
The inventor finds in realizing process of the present invention: when certain carrier wave was subject to strong co-channel interference, the received noise power that carries the service channel of this carrier wave also can increase.Based on this, can also may further comprise the steps after the 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 is then exported described the first warning information all above default Second Threshold.
The received noise power here equals the outer noise power sum of detection window.For instance, the received noise power of service channel 0 equal h (w)～h (L-1) power and.The Second Threshold here can be determined according to system design parameters, generally can be made as the emission scaled power and deduct 20 decibels of millis (dBm).
Need to prove that in the application, also execution in step 205,206 is not only carried out above-mentioned definite received noise power and judged whether unusual step according to received noise power after step 204, present embodiment is not construed as limiting this.
The inventor also finds in realizing process of the present invention: poor excessive when the intermediate-frequency channel chain-circuit time delay of certain carrier wave, when surpassing 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 the 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 the first service channel in described all service channels, then export the second warning information, described the second warning information indicates the intermediate-frequency channel chain-circuit time delay of described the first service channel poor excessive.
The pre-set peak value position here is desirable peak point position, is n value corresponding to h in the detection window (n) power maximum.And the power peak position is only relevant with service channel, and is relevant with service channel identification number (k) particularly, that is to say that for a service channel, the power peak position of arbitrary carrier wave of its carrying all is identical.For instance, under ideal conditions, for service channel k, h (n) is non-zero value when n=w*k only, if in the detection window | h (w*k+1) |～| h (w*k+w-1) | the power of any point is greater than | h (w*k) |, think that then peak is unusual, export described the second warning information.
In the normotopic situation of power peak, can also carry out further abnormality detection.Particularly, if the power peak position of the first carrier of described the first service channel carrying is identical with the pre-set peak value position of described the 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 the first service channel carrying;
If the power peak of the first carrier of described the first service channel carrying and the difference of power minor peaks are less than the 3rd default threshold value, then export the 3rd warning information, described the 3rd warning information indicates the chain-circuit time delay of the first carrier that does not compensate described the first service channel carrying poor.
The inventor finds in realizing process of the present invention: under long wire jumper scene, because the calibration loopback delay changes, if do not compensate the link delay inequality, can cause peak power ratio unusual.The peak power ratio here is the interior power peak of detection window and the difference of power minor peaks.For instance, 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 less than the 3rd threshold value then think unusual, is exported described the 3rd warning information.The 3rd threshold value here generally can be made as 6dB.
Alternatively, if the power peak position of the first carrier of described the first service channel carrying is identical with the pre-set peak value position of described the 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 the first service channel carrying and detection window internal power and;
If the detection window internal power of the first carrier of described the first service channel carrying and surpass the 4th default threshold value with the difference of power peak, then export the 4th warning information, described the 4th warning information indicates the first carrier of described the first service channel carrying to be subject to co-channel interference.
The inventor finds in realizing process of the present invention: when certain carrier wave is subject to strongly disturbing, may show peak value and received total wideband power (Received Total Wideband Power is called for short RTWP) than unusual.The peak value here and RTWP are than the difference that equals the RTWP in power peak and the 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 less than the 4th threshold value then think unusual, is exported described the 4th warning information.The 4th threshold value here generally can be made as 5dB.
Alternatively, if the power peak position of the first carrier of described the first service channel carrying is identical with the pre-set peak value position of described the first service channel, and described the first service channel has also carried at least one second carrier wave except described first carrier, then this embodiment can also comprise:
Described at least one second carrier wave to described the first service channel carrying carries out channel estimating;
According to the result of described channel estimating, determine the power peak position of described at least one second carrier wave of described the first service channel carrying;
If the power peak position of described at least one second carrier wave of described the first service channel carrying is all identical with the pre-set peak value position of described the first service channel, then determine the described first carrier of described the first service channel carrying and the peak power of described at least one the second carrier wave;
If the difference of maximum power and minimum power surpasses the 5th default threshold value in the described peak power, then export the 5th warning information, described the 5th warning information indicates the isolation of described the first service channel unusual.
The inventor finds in realizing process of the present invention: when the calibrated channel of RRU and the isolation between service channel are unusual, loopback signal and inner couplings signal formation are vector superposed, inner couplings signal and the phase difference between the loopback signal of different frequent points are different, cause the calibration value of each carrier wave of the problematic service channel of isolation to differ greatly, namely the calibration power of each intercarrier surpasses thresholding in the service channel.For instance, if service channel k carries a plurality of carrier waves, | h (w*k) | be the unit impulse response power of upper each carrier wave of service channel k, if the difference of maximum power and minimum power surpasses the 5th threshold value, think that then intercarrier extreme power ratio is unusual, export described the 5th warning information.The unit impulse response power here is performance number corresponding to pre-set peak value position, equals power peak when the power peak position is normal, and the 5th threshold value generally can be made as 7dB.
If the power peak position of all carrier waves of certain service channel carrying is all unusual, but the skew of the peak point position of its relative ideal is identical, such as for service channel k, when desirable peak point position is n=w*k, and the power peak position of a plurality of carrier waves of service channel k carrying is n=w*k+1, then also can be according to above-mentioned intercarrier extreme power than the isolation that detects service channel.Particularly, if the power peak position of the first carrier of described the first service channel carrying is different from the pre-set peak value position of described the first service channel, and described the first service channel has also carried at least one second carrier wave except described first carrier, then this embodiment can also comprise:
Described at least one second carrier wave to described the first service channel carrying carries out channel estimating;
According to the result of described channel estimating, determine the power peak position of described at least one second carrier wave of described the first service channel carrying;
If the power peak position of described at least one second carrier wave of described the first service channel carrying is all different from the pre-set peak value position of described the first service channel, and the skew of the relatively described pre-set peak value position, power peak position of described first carrier and at least one the second carrier wave is identical, then determines the described first carrier of described the first service channel carrying and the peak power of described at least one the second carrier wave;
If the difference of maximum power and minimum power surpasses the 5th default threshold value in the described peak power, then export the 5th warning information, described the 5th warning information indicates the isolation of described the first service channel unusual.
Alternatively, if the power peak position of the first carrier of described all service channel carryings is all identical with corresponding pre-set peak value position, 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 absolute value of the difference of the peak power of the first carrier of the second service channel carrying and described mean value surpasses the 6th default threshold value in described all service channels, then export the 6th warning information, described the 6th warning information indicates described the second service channel unusual.
The inventor finds in realizing process of the present invention: under identical configuration, calibration power between service channel should be basic identical, therefore can be according to power peak interchannel extreme value and average power, be each service channel calibration power of each carrier wave and the difference of each service channel calibration average power, carry out abnormality detection.The calibration power here is unit impulse response power.For instance, for first carrier, surpass the 6th threshold value if carry the difference of the calibration power average of certain service channel calibration power of this first carrier and the service channel that all carry this first carrier, think that then this service channel is unusual, export described the 6th warning information.The 6th threshold value here generally can be made as 4dB.
Further, the inventor also finds in realizing process of the present invention: unusual or RF cable connects when unusual when the radio-frequency channel of certain service channel, and then to be that unit impacts impulse response obviously less than normal for most typical feature.Based on this, if the power peak position of the first carrier of described the first service channel carrying is identical with the pre-set peak value position of described the 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 the first service channel carrying;
If described peak power surpasses the 7th default threshold value, then export the 7th warning information, described the 7th warning information indicates the unusual or RF cable in the radio-frequency channel of described the first service channel to connect unusual.
For instance, for service channel 0, if the power of unit impulse response h (0) | h (0) | surpass the 7th threshold value, think that then the power of unit impulse response is unusual, export described the 7th warning information.The 7th threshold value here generally can be made as 10dB.
Need to prove that the above-mentioned reference value that only provides the first～the 7th threshold value can be adjusted these threshold values according to system design parameters in the application, present embodiment is not done restriction to this.
In the present embodiment, antenna calibration is except the needs that satisfy wave beam forming, simultaneously can also be used for detecting co-channel interference between many base stations, RRU hardware fault, engineering construction fault etc., for instance, the RRU hardware fault may cause above-mentioned seven kinds of alarms, and the engineering construction fault mainly can cause exporting the 7th warning information.
In the prior art only the unit impulse response power based on channel estimation method antenna calibration is carried out abnormality detection, report the channel abnormal alarm for what power surpassed thresholding.There is following defective in this testing mechanism: at first, it is too strict that the difference on the engineering practice of construction does not allow that detection threshold is arranged ground, otherwise can because engineering difference causes a large amount of mistake alarms, have a strong impact on client's perception and satisfaction; Secondly, excessive detection threshold then can shield and cover a large amount of unusual, causes normally carrying out in the professional situation also having a strong impact on client's perception and satisfaction but without any alarm.Can with above-mentioned Through Several Survey Measure combination in any, by the channel estimation results of further analysis antenna calibration, can effectively recognize the out of order true and false, reduce False Rate and the mistake Total Return Ratio of equipment, and can locate out of order reason in the present embodiment.
The embodiment of the invention has adopted the signal to noise ratio of determining the first carrier of all service channel carryings according to the result of channel estimating, if the signal to noise ratio of the first carrier of described all service channel carryings is all above default first threshold, then the described first carrier of output indication is subject to the technological means of the first warning information of co-channel interference, because all service channels are all detected, improve the accuracy of testing result, and can locate further failure cause.
The structural representation of a kind of abnormal detector embodiment that Fig. 3 provides for the embodiment of the invention.As shown in Figure 3, this device comprises:
Detect alarm module 33, all surpass the first threshold of presetting if be used for the signal to noise ratio of the first carrier of described all service channels carryings, then export the first warning information, described the 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 is used for, and according to the result of described channel estimating, determines the received noise power of the first carrier of described all service channel carryings;
Described detection alarm module also is used for, if the received noise power of the first carrier of described all service channel carryings is then exported described the first warning information all above default Second Threshold.
In another alternative embodiment of the present invention, parameter determination module 32 also is used for, and according to the result of described channel estimating, determines the power peak position of the first carrier of described all service channel carryings;
Detecting alarm module 32 also is used 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 the first service channel in described all service channels, then export the second warning information, described the second warning information indicates the intermediate-frequency channel chain-circuit time delay of described the first service channel poor excessive.
In another alternative embodiment of the present invention, if the power peak position of the first carrier of described the first service channel carrying is identical with the pre-set peak value position of described the first service channel, then
Detecting alarm module 33 also is used for, if the power peak of the first carrier of described the first service channel carrying and the difference of power minor peaks are less than the 3rd default threshold value, then export the 3rd warning information, described the 3rd warning information indicates the chain-circuit time delay of the first carrier that does not compensate described the first service channel carrying poor.
In another alternative embodiment of the present invention, if the power peak position of the first carrier of described the first service channel carrying is identical with the pre-set peak value position of described the first service channel, then
Detecting alarm module 33 also is used for, if the detection window internal power of the first carrier of described the first service channel carrying and surpass the 4th default threshold value with the difference of power peak, then export the 4th warning information, described the 4th warning information indicates the first carrier of described the first service channel carrying to be subject to co-channel interference.
In another alternative embodiment of the present invention, if the power peak position of the first carrier of described the first service channel carrying is identical with the pre-set peak value position of described the first service channel, and described the first service channel has also carried at least one second carrier wave except described first carrier, then
Detect alarm module 33 and also be used for, if the difference of the maximum power in the described peak power and minimum power surpasses the 5th default threshold value, then export the 5th warning information, described the 5th warning information indicates the isolation of described the first service channel unusual.
In another alternative embodiment of the present invention, if the power peak position of the first carrier of described the first service channel carrying is different from the pre-set peak value position of described the first service channel, and described the first service channel has also carried at least one second carrier wave except described first carrier, then
Detect alarm module 33 and also be used for, if the difference of maximum power and minimum power surpasses the 5th default threshold value in the described peak power, then export the 5th warning information, described the 5th warning information indicates the isolation of described the first service channel unusual.
In another alternative embodiment of the present invention, if the power peak position of the first carrier of described all service channel carryings is all identical with corresponding pre-set peak value position, then
Detecting alarm module 33 also is used for, if the absolute value of the difference of the peak power of the first carrier of the second service channel carrying and described mean value surpasses the 6th default threshold value in described all service channels, then export the 6th warning information, described the 6th warning information indicates described the second service channel unusual.
In another alternative embodiment of the present invention, if the power peak position of the first carrier of described the first service channel carrying is identical with the pre-set peak value position of described the first service channel, then
Detect alarm module 33 and also be used for, if described peak power surpasses the 7th default threshold value, then export the 7th warning information, described the 7th warning information indicates the unusual or RF cable in the radio-frequency channel of described the first service channel to connect unusual.
In another alternative embodiment of the present invention, this device also comprises:
Receive calibration module 34, be used for generating the original calibrated burst, the first carrier that carries by the first calibrated channel sends described original calibrated burst, and described all service channels receive respectively; And/or
Transmitting calibration module 35, be used for described original calibrated burst cyclic shift, form calibrating signal sequence corresponding to all service channels, send respectively the calibrating signal sequence of described correspondence by the first carrier of described all service channels carrying, the first calibrated channel receives simultaneously.
A kind of method for detecting abnormality embodiment one or two that the specific implementation of present embodiment provides with reference to the embodiment of the invention.The embodiment of the invention has adopted the signal to noise ratio of determining the first carrier of all service channel carryings according to the result of channel estimating, if the signal to noise ratio of the first carrier of described all service channel carryings is all above default first threshold, then the described first carrier of output indication is subject to the technological means of the first warning information of co-channel interference, because all service channels are all detected, improve the accuracy of testing result, and can locate further failure cause.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be finished by the relevant hardware of program command, aforesaid program can be stored in the computer read/write memory medium, this program is carried out the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: the various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
It should be noted that at last: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment puts down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (20)
1. a method for detecting abnormality is characterized in that, comprising:
First carrier to all service channel carryings carries out channel estimating;
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 is then exported the first warning information all above default first threshold, described the first warning information indicates described first carrier to be subject to co-channel interference.
2. method according to claim 1 is characterized in that, described first carrier to all service channel carryings carries out also comprising after the 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 is then exported described the first warning information all above default Second Threshold.
3. method according to claim 1 and 2 is characterized in that, described first carrier to all service channel carryings carries out also comprising after the 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 the first service channel in described all service channels, then export the second warning information, described the second warning information indicates the intermediate-frequency channel chain-circuit time delay of described the first service channel poor excessive.
4. method according to claim 3 is characterized in that, if the power peak position of the first carrier of described the first service channel carrying is identical with the pre-set peak value position of described the 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 the first service channel carrying;
If the power peak of the first carrier of described the first service channel carrying and the difference of power minor peaks are less than the 3rd default threshold value, then export the 3rd warning information, described the 3rd warning information indicates the chain-circuit time delay of the first carrier that does not compensate described the first service channel carrying poor.
5. method according to claim 3 is characterized in that, if the power peak position of the first carrier of described the first service channel carrying is identical with the pre-set peak value position of described the first service channel, then also comprises:
According to the result of described channel estimating, determine the power peak of first carrier of described the first service channel carrying and detection window internal power and;
If the detection window internal power of the first carrier of described the first service channel carrying and surpass the 4th default threshold value with the difference of power peak, then export the 4th warning information, described the 4th warning information indicates the first carrier of described the first service channel carrying to be subject to co-channel interference.
6. method according to claim 3, it is characterized in that, if the power peak position of the first carrier of described the first service channel carrying is identical with the pre-set peak value position of described the first service channel, and described the first service channel has also carried at least one second carrier wave except described first carrier, then also comprise:
Described at least one second carrier wave to described the first service channel carrying carries out channel estimating;
According to the result of described channel estimating, determine the power peak position of described at least one second carrier wave of described the first service channel carrying;
If the power peak position of described at least one second carrier wave of described the first service channel carrying is all identical with the pre-set peak value position of described the first service channel, then determine the described first carrier of described the first service channel carrying and the peak power of described at least one the second carrier wave;
If the difference of maximum power and minimum power surpasses the 5th default threshold value in the described peak power, then export the 5th warning information, described the 5th warning information indicates the isolation of described the first service channel unusual.
7. method according to claim 3, it is characterized in that, if the power peak position of the first carrier of described the first service channel carrying is different from the pre-set peak value position of described the first service channel, and described the first service channel has also carried at least one second carrier wave except described first carrier, then also comprise:
Described at least one second carrier wave to described the first service channel carrying carries out channel estimating;
According to the result of described channel estimating, determine the power peak position of described at least one second carrier wave of described the first service channel carrying;
If the power peak position of described at least one second carrier wave of described the first service channel carrying is all different from the pre-set peak value position of described the first service channel, and the skew of the relatively described pre-set peak value position, power peak position of described first carrier and at least one the second carrier wave is identical, then determines the described first carrier of described the first service channel carrying and the peak power of described at least one the second carrier wave;
If the difference of maximum power and minimum power surpasses the 5th default threshold value in the described peak power, then export the 5th warning information, described the 5th warning information indicates the isolation of described the first service channel unusual.
8. method according to claim 3 is characterized in that, if the power peak position of the first carrier of described all service channel carryings is all identical with corresponding pre-set peak value position, 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 absolute value of the difference of the peak power of the first carrier of the second service channel carrying and described mean value surpasses the 6th default threshold value in described all service channels, then export the 6th warning information, described the 6th warning information indicates described the second service channel unusual.
9. method according to claim 3 is characterized in that, if the power peak position of the first carrier of described the first service channel carrying is identical with the pre-set peak value position of described the first service channel, then also comprises:
According to the result of described channel estimating, determine the peak power of the first carrier of described the first service channel carrying;
If described peak power surpasses the 7th default threshold value, then export the 7th warning information, described the 7th warning information indicates the unusual or RF cable in the radio-frequency channel of described the first service channel to connect unusual.
10. method according to claim 1 is characterized in that, described first carrier to all service channel carryings carries out also comprising before the channel estimating:
Generate the original calibrated burst, the first carrier that carries by the first calibrated channel sends described original calibrated burst, and described all service channels receive respectively; And/or
With described original calibrated burst cyclic shift, form calibrating signal sequence corresponding to described all service channels, send respectively the calibrating signal sequence of described correspondence by the first carrier of described all service channels carrying, the first calibrated channel receives simultaneously.
11. an abnormal detector is characterized in that, comprising:
Channel estimation module is used for the first carrier of all service channel carryings is carried out channel estimating;
The parameter determination module is used 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, all surpass the first threshold of presetting if be used for the signal to noise ratio of the first carrier of described all service channels carryings, then export the first warning information, described the first warning information indicates described first carrier to be subject to co-channel interference.
12. device according to claim 11 is characterized in that, described parameter determination module also is used for, and according to the result of described channel estimating, determines the received noise power of the first carrier of described all service channel carryings;
Described detection alarm module also is used for, if the received noise power of the first carrier of described all service channel carryings is then exported described the first warning information all above default Second Threshold.
13. according to claim 11 or 12 described devices, it is characterized in that described parameter determination module also is used for, according to the result of described channel estimating, determine the power peak position of the first carrier of described all service channels carryings;
Described detection alarm module also is used 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 the first service channel in described all service channels, then export the second warning information, described the second warning information indicates the intermediate-frequency channel chain-circuit time delay of described the first service channel poor excessive.
14. device according to claim 13 is characterized in that, if the power peak position of the first carrier of described the first service channel carrying is identical with the pre-set peak value position of described the first service channel, then
Described parameter determination module also is used for, and according to the result of described channel estimating, determines power peak and the power minor peaks of the first carrier of described the first service channel carrying;
Described detection alarm module also is used for, if the power peak of the first carrier of described the first service channel carrying and the difference of power minor peaks are less than the 3rd default threshold value, then export the 3rd warning information, described the 3rd warning information indicates the chain-circuit time delay of the first carrier that does not compensate described the first service channel carrying poor.
15. device according to claim 13 is characterized in that, if the power peak position of the first carrier of described the first service channel carrying is identical with the pre-set peak value position of described the first service channel, then
Described parameter determination module also is used for, according to the result of described channel estimating, determine the power peak of first carrier of described the first service channel carrying and detection window internal power and;
Described detection alarm module also is used for, if the detection window internal power of the first carrier of described the first service channel carrying and surpass the 4th default threshold value with the difference of power peak, then export the 4th warning information, described the 4th warning information indicates the first carrier of described the first service channel carrying to be subject to co-channel interference.
16. device according to claim 13, it is characterized in that, if the power peak position of the first carrier of described the first service channel carrying is identical with the pre-set peak value position of described the first service channel, and described the first service channel has also carried at least one second carrier wave except described first carrier, then
Described channel estimation module also is used for, and described at least one second carrier wave that described the first service channel is carried carries out channel estimating;
Described parameter determination module also is used for, and according to the result of described channel estimating, determines the power peak position of described at least one second carrier wave of described the first service channel carrying; If the power peak position of described at least one second carrier wave of described the first service channel carrying is all identical with the pre-set peak value position of described the first service channel, then determine the described first carrier of described the first service channel carrying and the peak power of described at least one the second carrier wave;
Described detection alarm module also is used for, if the difference of the maximum power in the described peak power and minimum power surpasses the 5th default threshold value, then exports the 5th warning information, and described the 5th warning information indicates the isolation of described the first service channel unusual.
17. device according to claim 13, it is characterized in that, if the power peak position of the first carrier of described the first service channel carrying is different from the pre-set peak value position of described the first service channel, and described the first service channel has also carried at least one second carrier wave except described first carrier, then
Described channel estimation module also is used for, and described at least one second carrier wave that described the first service channel is carried carries out channel estimating;
Described parameter determination module also is used for, and according to the result of described channel estimating, determines the power peak position of described at least one second carrier wave of described the first service channel carrying; If the power peak position of described at least one second carrier wave of described the first service channel carrying is all different from the pre-set peak value position of described the first service channel, and the skew of the relatively described pre-set peak value position, power peak position of described first carrier and at least one the second carrier wave is identical, then determines the described first carrier of described the first service channel carrying and the peak power of described at least one the second carrier wave;
Described detection alarm module also is used for, if the difference of maximum power and minimum power surpasses the 5th default threshold value in the described peak power, then exports the 5th warning information, and described the 5th warning information indicates the isolation of described the first service channel unusual.
18. device according to claim 13 is characterized in that, if the power peak position of the first carrier of described all service channel carryings is all identical with corresponding pre-set peak value position, then
Described parameter determination module also is used for, and according to the result of described channel estimating, determines the peak power of the first carrier of described all service channels carrying, and calculates the mean value of peak power of the first carrier of described all service channels carryings;
Described detection alarm module also is used for, if the absolute value of the difference of the peak power of the first carrier of the second service channel carrying and described mean value surpasses the 6th default threshold value in described all service channels, then export the 6th warning information, described the 6th warning information indicates described the second service channel unusual.
19. device according to claim 13 is characterized in that, if the power peak position of the first carrier of described the first service channel carrying is identical with the pre-set peak value position of described the first service channel, then
Described parameter determination module also is used for, and according to the result of described channel estimating, determines the peak power of the first carrier of described the first service channel carrying;
Described detection alarm module also is used for, if described peak power surpasses the 7th default threshold value, then exports the 7th warning information, and described the 7th warning information indicates the unusual or RF cable in the radio-frequency channel of described the first service channel to connect unusual.
20. device according to claim 11 is characterized in that, also comprises:
Receive calibration module, be used for generating the original calibrated burst, the first carrier that carries by the first calibrated channel sends described original calibrated burst, and described all service channels receive respectively; And/or
The transmitting calibration module, be used for described original calibrated burst cyclic shift, form calibrating signal sequence corresponding to all service channels, send respectively the calibrating signal sequence of described correspondence by the first carrier of described all service channels carrying, the first calibrated channel receives simultaneously.
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| CN104301050A (en) * | 2014-10-11 | 2015-01-21 | 大唐移动通信设备有限公司 | Method and device for judging antenna failures |
| CN110926496A (en) * | 2018-12-14 | 2020-03-27 | 青岛中海潮科技有限公司 | Method, device and system for detecting motion abnormity of underwater vehicle |
| US11283590B2 (en) | 2020-06-04 | 2022-03-22 | Realtek Semiconductor Corp. | Apparatus and method of controlling a multi-antenna 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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| Publication number | Priority date | Publication date | Assignee | Title |
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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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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104301050A (en) * | 2014-10-11 | 2015-01-21 | 大唐移动通信设备有限公司 | Method and device for judging antenna failures |
| CN110926496A (en) * | 2018-12-14 | 2020-03-27 | 青岛中海潮科技有限公司 | Method, device and system for detecting motion abnormity of underwater vehicle |
| CN110926496B (en) * | 2018-12-14 | 2021-06-22 | 青岛中海潮科技有限公司 | Method, device and system for detecting motion abnormity of underwater vehicle |
| US11283590B2 (en) | 2020-06-04 | 2022-03-22 | Realtek Semiconductor Corp. | Apparatus and method of controlling a multi-antenna communication system |
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