CN104378782B - The recognition methods of interference signal and device in LTE system - Google Patents
The recognition methods of interference signal and device in LTE system Download PDFInfo
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- CN104378782B CN104378782B CN201310358437.8A CN201310358437A CN104378782B CN 104378782 B CN104378782 B CN 104378782B CN 201310358437 A CN201310358437 A CN 201310358437A CN 104378782 B CN104378782 B CN 104378782B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/04—Arrangements for maintaining operational condition
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/08—Testing, supervising or monitoring using real traffic
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
Abstract
The invention discloses a kind of recognition methods of interference signal in Long Term Evolution LTE system, including：The scanning signal that the Current Scan moment has LTE bandwidth of operation is divided at least two sub-bands；Determine the type for the interference that at least two sub-band is subject to；The type of interference according at least two sub-band determines the type for the interference that the scanning signal at the Current Scan moment is subject to.The invention also discloses the identification devices of interference signal in evolution LTE system simultaneously.Using the present invention, it can be achieved that the automatic identification of the interference signal in LTE system, saves manpower and materials.
Description
Technical field
The present invention relates to the identification technologies of communication system interference signal, and in particular to a kind of long evolving system（LTE,
Long Term Evolution）The recognition methods of interference signal and device in system.
Background technology
Wireless communication technique includes following several：LTE, the mobile way system in the whole world（GSM, Global System For
Mobile Communication）, TDS-CDMA system（TD-SCDMA, Time Division Synchronous
Code Division Multiple Access）, CDMA（CDMA, Code Division Multiple Access),
And wideband code division multiple access（WCDMA, Wideband Code Division Multiple Access）Deng.
Due to the finiteness of frequency spectrum resource and the similitude of network topology structure, between above-mentioned several communication systems there are
Identical working frequency range.Now illustrate：Using LTE as main system（Disturbed Power Systems）When, workable working frequency range includes：
F-band and D frequency ranges；Wherein, F-band is 1880 megahertzs（Mhz）~1900Mhz；D frequency ranges are 2570Mhz~2620Mhz.TD-
SCDMA is also operable with F-band, and when Disturbed Power Systems LTE uses F-band, TD-SCDMA will be doing LTE system generation system
It disturbs；Further, since frequency range interval is smaller, works in the Personal Handyphone System of 1900Mhz~1915MMhz and work in 1800Mhz frequency ranges
GSM will generate harmonic wave interference and Intermodulation Interference to main system LTE.
No matter it can be seen that using which kind of communication system as main system, which communication system is described dry as interference system
Disturb system can generate interference to main system.In the prior art, the identification interference system signal in Disturbed Power Systems of generally use
（Interference signal）Method be：Disturbed Power Systems signal is scanned using scanner, because scanner has exportable setting frequency
This characteristic of the instantaneous spectrum figure and time-domain diagram of segment signal, therefore spectrogram that tester can be according to Disturbed Power Systems signal, time domain
Scheme to identify disturbed there are this different features and the test experience of itself from the spectrogram of interference signal, time-domain diagram
Interference signal in system.
Although the above method may recognize that the interference signal in Disturbed Power Systems, but need what tester exported scanner
Mass data carries out point-to-point analysis, and the data of frequency sweep of scanner often last more than ten hour, and data volume is very big, this
Manual work mode so that this method is time-consuming, laborious, accuracy rate can not be guaranteed.
The content of the invention
In view of this, it is a primary object of the present invention to provide the recognition methods of interference signal and dress in a kind of LTE system
It puts, can realize the identification of the interference signal in LTE system automatically, without manual work, time saving and energy saving and recognition accuracy is high.
In order to achieve the above objectives, the technical proposal of the invention is realized in this way：
An embodiment of the present invention provides a kind of recognition methods of interference signal in Long Term Evolution LTE system, by Current Scan
The scanning signal that moment has LTE bandwidth of operation is divided at least two sub-bands；The method further includes：
Determine the type for the interference that at least two sub-band is subject to；
The type of interference according at least two sub-band determines that the scanning signal at the Current Scan moment is subject to
Interference type.
In said program, the scanning signal that the Current Scan moment is had LTE bandwidth of operation is divided at least two
Sub-band, including：
The scanning signal according to the carrier frequency bandwidth of TDS-CDMA system TD-SCDMA is divided, is divided
For 13 sub-bands.
In said program, the type of the interference for determining at least two sub-band and being subject to, including：
All sampled points of the scanning signal are assigned in 13 sub-bands；
Count the sampling that sampling point power in 13 sub-bands each sub-bands is more than preset interference threshold value
Point number；
It is disturbed respectively with default obstruction by the sampled point number for being more than the interference threshold value in each sub-band
Threshold value, TD-SCDMA interference thresholds and spurious interference threshold value are made comparisons, and determine the type for the interference that each sub-band is subject to.
In said program, it is described by each sub-band be more than the interference threshold value sampled point number respectively with
Default blocking interference threshold value, TD-SCDMA interference thresholds and spurious interference threshold value are made comparisons, and are determined each sub-band and be subject to
Interference type, including：
The type of the sub-band being interfered includes：Obstruction interference sub-band, TD-SCDMA interference sub-bands, spuious
Disturb sub-band；The default blocking interference threshold value includes：First blocking interference threshold value, the second blocking interference threshold value；It is described
Default spurious interference threshold value includes：First spurious interference threshold value, the second spurious interference threshold value；
Correspondingly, when current sub-band belongs to preceding 12 sub-bands in 13 sub-bands, in the current son
The power that frequency band has be more than the interference threshold value sampled point number be more than or equal to the first blocking interference threshold value and it is described work as
In preceding sub-band inactivity jump sampled point and power bust sampled point when, determine current sub-band be obstruction interference sub-band；
When current sub-band is the 13rd sub-band, it is more than adopting for the interference threshold value in the power that the current sub-band has
Sampling point number is more than or equal to inactivity in the second blocking interference threshold value and the current sub-band and jumps sampled point and power bust
During sampled point, it is obstruction interference sub-band to determine the current sub-band；
When current sub-band belongs to preceding 12 sub-bands in 13 sub-bands, have in the current sub-band
Power be more than the interference threshold value sampled point number be more than or equal to TD-SCDMA interference thresholds and the current sub-band
Only power surge sampling point when, determine the sub-band for TD-SCDMA disturb sub-band；Alternatively, have in the current sub-band
The sampled point number that some power is more than the interference threshold value is more than or equal to TD-SCDMA interference thresholds and the current son frequency
Band only power bust sampled point when, determine the sub-band for TD-SCDMA disturb sub-band；Alternatively, in the current sub-band
The sampled point number that the power having is more than the interference threshold value is more than or equal to TD-SCDMA interference thresholds and the current son
When the existing power surge sampling point of frequency band also has power bust sampled point, determine that the sub-band disturbs sub-band for TD-SCDMA；
Current sub-band belongs to any one sub-band in 13 sub-bands, and have in the current sub-band
The sampled point number that power is more than the interference threshold value is more than or equal to the first spurious interference threshold value and spuious less than or equal to second
When between interference threshold, it is spurious interference subband to determine the current sub-band；Wherein, first spurious interference threshold value is small
In second spurious interference threshold value.
In said program, the type of the interference according at least two sub-band, when determining the Current Scan
The type for the interference that the scanning signal at quarter is subject to, including：
Quantity, TD-SCDMA interference sub-bands to the obstruction interference sub-band of 13 sub-bands at Current Scan moment
Quantity and the quantity of spurious interference subband counted；
By the way that the quantity of the obstruction interference sub-band counted, TD-SCDMA to be disturbed to the quantity of sub-band and spuious dry
The quantity for disturbing sub-band is made comparisons respectively with default first threshold, second threshold, the 3rd threshold value, and when determining Current Scan
The type for the interference that the scanning signal at quarter is subject to.
It is described by the way that the quantity of the obstruction interference sub-band counted, TD-SCDMA are disturbed sub-band in said program
Quantity and the quantity of spurious interference subband make comparisons respectively with default first threshold, second threshold, the 3rd threshold value, and
Determine the type for the interference that the scanning signal at Current Scan moment is subject to, including：
Count the quantity of obstruction interference sub-band in 13 sub-bands of Current Scan moment, TD-SCDMA interference sub-bands
Quantity and spurious interference subband quantity；
When the quantity of the obstruction interference sub-band is more than or equal to the first threshold set, when determining the Current Scan
The interference that the scanning signal at quarter is subject to is disturbed for obstruction；
When the quantity of TD-SCDMA interference sub-bands is more than or equal to the second threshold set, determine described currently to sweep
It is TD-SCDMA interference to retouch the interference that the scanning signal at moment is subject to；
When the quantity of the spurious interference subband is more than or equal to three threshold value set, when determining the Current Scan
The interference that the scanning signal at quarter is subject to is clutter interference.
The embodiment of the present invention additionally provides a kind of identification device of interference signal in Long Term Evolution LTE system, described device
Including：Division unit, the first determination unit and the second determination unit；Wherein,
The division unit, the scanning signal for the Current Scan moment to be had to LTE bandwidth of operation are divided at least two
A sub-band；
First determination unit, for determining the type of interference that at least two sub-band is subject to；
Second determination unit for the type of the interference according at least two sub-band, determines described current
The type for the interference that the scanning signal at scanning moment is subject to.
In said program, the division unit is additionally operable to the scanning signal according to TDS-CDMA system
The carrier frequency bandwidth of TD-SCDMA is divided, and is divided into 13 sub-bands.
In said program, first determination unit includes：It is single to distribute subelement, statistics subelement and the first definite son
Member；
Wherein,
The distribution subelement, for all sampled points of the scanning signal to be assigned to 13 sub-bands
It is interior；
The statistics subelement, for counting, sampling point power is more than in each sub-band in 13 sub-bands
The sampled point number of preset interference threshold value；
First determination subelement, for passing through in each sub-band more than the sampled point number point of interference threshold value
Do not make comparisons with default blocking interference threshold value, TD-SCDMA interference thresholds and spurious interference threshold value, determine each sub-band by
The type for the interference arrived.
In said program, first determination subelement is additionally operable to：
Determine that current sub-band belongs to preceding 12 sub-bands in 13 sub-bands, in the current sub-band
The sampled point number that the power having is more than the interference threshold value is more than or equal to the first blocking interference threshold value and the current son
In frequency band inactivity jump sampled point and power bust sampled point when, determine current sub-band be obstruction interference sub-band；Currently
When sub-band is the 13rd sub-band, it is more than the sampled point of the interference threshold value in the power that the current sub-band has
Number is more than or equal to inactivity in the second blocking interference threshold value and the current sub-band and jumps sampled point and the sampling of power bust
During point, it is obstruction interference sub-band to determine the current sub-band；
Determine that current sub-band belongs to preceding 12 sub-bands in 13 sub-bands, in the current sub-band
The sampled point number that the power having is more than the interference threshold value is more than or equal to TD-SCDMA interference thresholds and the current son
When frequency band only has power surge sampling point, determine that the sub-band disturbs sub-band for TD-SCDMA；Alternatively, in the current son frequency
The sampled point number that the power that band has is more than the interference threshold value is more than or equal to TD-SCDMA interference thresholds and described current
When sub-band only has power bust sampled point, determine that the sub-band disturbs sub-band for TD-SCDMA；Alternatively, in the current son
The power that frequency band has be more than the interference threshold value sampled point number be more than or equal to TD-SCDMA interference thresholds and it is described work as
When the preceding existing power surge sampling point of sub-band also has power bust sampled point, determine the sub-band for TD-SCDMA interference son frequencies
Band；
It determines any one sub-band that current sub-band belongs in 13 sub-bands, has in the current sub-band
The sampled point number that some power is more than the interference threshold value is more than or equal to the first spurious interference threshold value and less than or equal to second
When between spurious interference threshold value, it is spurious interference subband to determine the current sub-band；Wherein, the son frequency being interfered
The type of band includes：Obstruction interference sub-band, TD-SCDMA interference sub-band, spurious interference subband；The default obstruction
Interference threshold includes：First blocking interference threshold value, the second blocking interference threshold value；The default spurious interference threshold value includes：The
One spurious interference threshold value, the second spurious interference threshold value；First spurious interference threshold value is less than second spurious interference threshold value.
In said program, second determination unit includes：Count subelement and the second determination subelement；Wherein,
The statistics subelement, for the number of the obstruction interference sub-band of 13 sub-bands to the Current Scan moment
The quantity of amount, the quantity of TD-SCDMA interference sub-bands and spurious interference subband is counted, and statistical result is sent
To second determination subelement；
Second determination subelement, for by the way that the quantity of obstruction interference sub-band, TD-SCDMA are disturbed sub-band
Quantity and the quantity of spurious interference subband make comparisons respectively with default first threshold, second threshold, the 3rd threshold value, really
Make the type for the interference that the scanning signal at Current Scan moment is subject to.
In said program, second determination unit is additionally operable to：
When determining that the quantity of the obstruction interference sub-band is more than or equal to the first threshold set, the Current Scan is determined
The interference that the scanning signal at moment is subject to is disturbed for obstruction；
When determining that the quantity of the TD-SCDMA interference sub-band is more than or equal to the second threshold set, determine that this is current
The interference that the scanning signal at scanning moment is subject to is disturbed for TD-SCDMA；
When determining that the quantity of the spurious interference subband is more than or equal to three threshold value set, the Current Scan is determined
The interference that the scanning signal at moment is subject to is clutter interference.
The recognition methods of interference signal and device in LTE system provided in an embodiment of the present invention, by pointer during Current Scan
The scanning signal for having LTE bandwidth of operation is divided at least two sub-bands；Determine the interference that at least two sub-band is subject to
Type；The type of interference according at least two sub-band determines that the scanning signal at the Current Scan moment is subject to
Interference type.The technical solution of the embodiment of the present invention carries out the automatic of interference type to the scanning signal of scanner output
Identification without manual work, saves man power and material and recognition accuracy is high.
Description of the drawings
Fig. 1 be the embodiment of the present invention LTE system in interference signal recognition methods realization flow diagram；
Fig. 2 be the embodiment of the present invention LTE system in interference signal recognition methods specific implementation flow diagram；
Fig. 3 be the embodiment of the present invention LTE system in interference signal identification device composition structure diagram.
Specific embodiment
When using LTE as Disturbed Power Systems, maximum interference source comes from obstruction interference, co-channel interference, clutter interference etc..Its
In, the clutter interference includes：Harmonic wave interference, Intermodulation Interference etc..When LTE works in F-band, the co-channel interference source is
TD-SCDMA.In addition, interference source further includes other interference unavoidable in communication transmission process.
The embodiment of the present invention describes a kind of recognition methods of interference signal in LTE system, as shown in Figure 1, the method
Including：
Step 11：The scanning signal that the Current Scan moment has LTE bandwidth of operation is divided at least two sub-band Sn.
Wherein, n is the number of the sub-band of division, is positive integer and n >=2.
In the technical solution that the present invention records, Current Scan moment scanner output scanning signal, the scanning signal band
Width is LTE bandwidth of operation, is 1900Mhz-1880Mhz=20Mhz.Meanwhile the carrier frequency bandwidth of interference signal TD-SCDMA is
LTE bandwidth of operation 20Mhz in units of carrier frequency bandwidth 1.6Mhz, is carried out the division of sub-band, can be divided into 20/ by 1.6Mhz
1.6 round up equal to 13 sub-bands, the sub-band of division be followed successively by sub-band S1, sub-band S2 ... sub-bands S12 with
And sub-band S13, it is referred to as the first frequency sub-band, the 12nd sub-band of the second sub-band ... and the 13rd son frequency
Band.
Step 12：Determine the type for the interference that at least two sub-band is subject to.
At the Current Scan moment, it is necessary to determine sub-band S1, sub-band S2 ... sub-bands S12 and sub-band respectively
The type for the interference that S13 is each subject to.
As shown in Fig. 2, step 12 further comprises：
Step 121：All sampled points of scanning signal with LTE bandwidth of operation are assigned at least two sons frequency
In band.
Here, number Num=200 of signal sampling point in LTE bandwidth of operation are pre-set, each sampling point bandwidth SB=
20Mhz/200=100Khz.200 sampled points are evenly distributed in 13 sub-bands of above-mentioned division, then sub-band
S1 is to including 16 sampled points in each sub-bands of sub-band S12, include 8 sampled points in sub-band S13.
Wherein, the number of signal sampling point is flexibly set according to the demand of practical application in the LTE bandwidth of operation.
Step 122：It counts sampling point power in each interior sub-band of 13 frequency bands and is more than default interference threshold
The sampled point number of value C.
Here, the number for counting sampled point of the sub-band S1 internal powers more than the interference threshold value C is DC1；Statistics
The number of sampled point in frequency band S2 power more than the interference threshold value C is DC2；And so on, count sub-band S13 power
The number of the interior sampled point more than the interference threshold value C is DC13.
Here, power surge sampling point is defined as：Two neighboring sampled point Sa（i）With Sa（i+1）, as sampled point Sa（i
+1）Power is more than sampled point Sa（i）During power 8dB~15dB, by sampled point Sa（i+1）Referred to as power surge sampling point is determined
Justice；Similar, as sampled point Sa（i+1）Power is less than sampled point Sa（i）During power 8dB~15dB, by sampled point Sa（i+1）Claim
Be power bust sampled point；Wherein, i is positive integer and i≤15.
Step 123：By in each sub-band be more than interference threshold value C sampled point number respectively with default obstruction
Interference threshold, TD-SCDMA interference thresholds and spurious interference threshold value are made comparisons, and determine the type for the interference that each sub-band is subject to.
In this step, because the interference source of the type for the interference that LTE system is subject to, i.e. LTE system includes：Obstruction interference,
TD-SCDMA is disturbed and clutter interference.The realization approach of the embodiment of the present invention is the class of the first interference being subject to of definite sub-band
Type, and then the type being interfered by 13 sub-bands determines the interference that the scanning signal at the Current Scan moment is subject to again
Type.
Following technical scheme is the class for the interference being subject to for determining each sub-band in sub-band S1~sub-band S13
Type.
Specifically, determine that the interference that sub-band is subject to is disturbed for obstruction（It is obstruction interference sub-band to determine current sub-band）
Process include：
Because the sampled point number that sub-band S1~S12 is included with sub-band S13 differs, in definite above-mentioned division
13 sub-bands when being obstruction interference sub-band, it is necessary to determine respectively sub-band S1~sub-band S12 and sub-band S13 by
The interference type arrived.The blocking interference threshold value includes：First blocking interference threshold value, the second blocking interference threshold value.
Assuming that current sub-band is sub-band S（n）, sub-band S（n）Internal power is adopted more than the interference threshold value C's
The number of sampling point is DC（n）.
As sub-band S（n）Belong in any one sub-band in sub-band S1~sub-band S12, i.e. n=1~12 and appoint
During a positive integer of anticipating, sub-band S（n）DC（n）More than or equal to the first blocking interference threshold value and sub-band S（n）Interior nothing
When power surge sampling point and power bust sampled point, sub-band S is determined（n）For obstruction interference sub-band；Wherein, described
One blocking interference threshold value can be any one in positive integer 10~12.
As sub-band S（n）Belong to sub-band S（13）, i.e. n=13 when, sub-band S（n）DC（n）More than or equal to
Two blocking interference threshold values and sub-band S（n）Interior inactivity jump sampled point and power bust sampled point when, determine the son frequency
Band S（n）For obstruction interference sub-band；Wherein, second blocking interference threshold value can be any one in positive integer 5~6.
Specifically, determine that the interference that sub-band is subject to is disturbed for TD-SCDMA（Determine that current sub-band is done for TD-SCDMA
Disturb sub-band）Process include：
As sub-band S（n）Belong in any one sub-band in sub-band S1~sub-band S12, i.e. n=1~12 and appoint
During a positive integer of anticipating, sub-band S（n）DC（n）More than or equal to TD-SCDMA interference thresholds and sub-band S（n）Inside only
When having power surge sampling point, sub-band S is determined（n）Sub-band is disturbed for TD-SCDMA；
Alternatively, sub-band S（n）DC（n）More than or equal to TD-SCDMA interference thresholds and sub-band S（n）It is interior to only have
During power bust sampled point, sub-band S is determined（n）Sub-band is disturbed for TD-SCDMA；
Alternatively, sub-band S（n）DC（n）More than or equal to TD-SCDMA interference thresholds and sub-band S（n）It is interior existing
When power surge sampling point also has power bust sampled point, sub-band S is determined（n）Sub-band is disturbed for TD-SCDMA.
Wherein, the TD-SCDMA interference thresholds can be any one in positive integer 10~12.
Specifically, determine that the interference that subbands are subject to is clutter interference（Determine current sub-band for clutter interference son frequency
Band）Process include：The spurious interference threshold value includes：First spurious interference threshold value, the second spurious interference threshold value.
As sub-band S（n）Belong to any one sub-band in sub-band S1~sub-band S13, sub-band S（n）
DC（n）During more than or equal to the first spurious interference threshold value and less than or equal between the second spurious interference threshold value, sub-band S is determined
（n）For spurious interference subband.Wherein, the first spurious interference threshold value is that the 1, second spurious interference threshold value is 6.
Preferably, in sub-band S（n）Neither obstruction interference sub-band, nor TD-SCDMA interference sub-band and
Obstruction interference sub-band, and sub-band S（n）DC（n）During more than or equal to 1, sub-band S is determined（n）For other interference
Frequency band.
It should be noted that above-mentioned definite sub-band is obstruction interference sub-band or TD-SCDMA interference or clutter interference
The process of sub-band can determine sequencing according to the demand of practical application, can also be carried out at the same time sub-band interference type
It determines.
Step 13：The type of interference according at least two sub-band determines the interference that the scanning signal is subject to
Type.
In this step, obstruction interference sub-band in 13 sub-bands that the statistics Current Scan moment divides scanning signal
Quantity, TD-SCDMA interference sub-band quantity and spurious interference subband quantity.
When the quantity of the obstruction interference sub-band is more than or equal to the first threshold set, the Current Scan moment is determined
The interference that is subject to of scanning signal disturbed for obstruction.Wherein, the first threshold can be any one positive integer in 8~9.
When the quantity of TD-SCDMA interference sub-bands is more than or equal to the second threshold set, the Current Scan is determined
The interference that the scanning signal at moment is subject to is disturbed for TD-SCDMA.Wherein, the second threshold is 1.
When the quantity of the spurious interference subband is more than or equal to three threshold value set, the Current Scan moment is determined
The interference that is subject to of scanning signal be clutter interference.Wherein, the 3rd threshold value is 1.
When the quantity of other interference sub-bands is more than or equal to four threshold value set, the Current Scan moment is determined
The interference that is subject to of scanning signal be other interference.Wherein, the 4th threshold value is 1.
Preferably, in embodiments of the present invention, the sampled point quantity in each sub-band is it is known that through the above scheme may be used
Know which sub-band is obstruction interference sub-band, which sub-band is TD-SCDMA interference sub-band, which sub-band is spuious
Disturb sub-band, then interference sample point accounting can be calculated by the following formula.
In quantity/LTE bandwidth of operation of sampled point of the interference sample point accounting=power more than interference threshold value C
All sampled points.
Further, it is also possible to blocking interference sampling point accounting is calculated by the following formula.
All sampled points in the blocking interference sampling point accounting=blocking interference sampling point/LTE bandwidth of operation;
Alternatively, the blocking interference sampling point accounting=blocking interference sampling point/power is more than the sampling of interference threshold value C
The quantity of point.
Wherein, the blocking interference sampling point is the number of the sampled point in all obstruction interference sub-bands.
It is similar with calculating blocking interference sampling point accounting, TD-SCDMA interference samples point accounting and miscellaneous can also be calculated
Interference sample point accounting is dissipated, which is not described herein again.
The process for calculating each accounting above is the prior art, is not introduced excessively herein.
Based on the recognition methods of interference signal in above-mentioned LTE system, the embodiment of the present invention is additionally provided in a kind of LTE system
The identification device of interference signal, as shown in figure 3, described device includes：Division unit 31, the first determination unit 33 and second are true
Order member 35；Wherein,
The division unit 31, the scanning signal for the Current Scan moment to be had to LTE bandwidth of operation are divided at least
Two sub-band Sn；
First determination unit 33, for determining the type of interference that at least two sub-band is subject to；
Second determination unit 35 for the type of the interference according at least two sub-band, determines described work as
The type for the interference that the scanning signal at preceding scanning moment is subject to.
Wherein, n is the number of the sub-band of division, is positive integer and n >=2；The type for the interference that the sub-band is subject to,
Namely the type of interference that the scanning signal at the Current Scan moment is subject to includes：Obstruction interference, TD-SCDMA are disturbed, are spuious
Interference and other interference in addition to above-mentioned interference.Correspondingly, the type of the sub-band being interfered includes：Obstruction is dry
Disturb sub-band, TD-SCDMA interference sub-band, spurious interference subband and other interference sub-bands.
The division unit 31, specifically in units of the carrier frequency bandwidth 1.6Mhz of TD-SCDMA, currently being swept to described
Retouch the signal bandwidth 20Mhz of the scanning signal of moment scanner output（Equal to LTE bandwidth of operation）The division of sub-band is carried out, altogether
It is divided into 20/1.6 to round up equal to 13 sub-bands, the sub-band of division is followed successively by sub-band S1, sub-band S2 ...
Frequency band S12 and sub-band S13 is referred to as the 12nd the first frequency sub-band, the second sub-band ... sub-band and the tenth
Three sub-bands.
As shown in figure 3, the first determination unit 33 further comprises：It is true to distribute subelement 331, statistics subelement 333, first
Stator unit 335 and setting subelement 337；Wherein,
The setting subelement 337, for setting the number of signal sampling point in LTE bandwidth of operation；
Here, number Num=200 for setting subelement 337 that signal sampling point in the LTE bandwidth of operation is set；
The distribution subelement 331, for set all signal sampling points to be assigned at least two sons frequency
In band；
The statistics subelement 333, for counting at least two sub-band sampled point work(in each sub-band
Rate is more than the sampled point number of preset interference threshold value C；
First determination subelement 335, for passing through the sampled point in each sub-band more than interference threshold value C
Number is made comparisons respectively with default blocking interference threshold value, TD-SCDMA interference thresholds and spurious interference threshold value, determines each son frequency
The type for the interference that band is subject to.
Specifically, 200 sampled point mean allocations that the distribution subelement 331 sets the setting subelement 337
It is 16 sampled points, sub-bands into 13 above-mentioned sub-bands, in distribution sub-band S1 to each sub-bands of sub-band S12
S13 is 8 sampled points.The distribution subelement 331 notifies above-mentioned allocation result to the statistics subelement 333, the system
Meter subelement 333 unites to the number of sampled point of the sampling point power in each sub-band more than preset interference threshold value C
Meter；And the sub-band S1 counted on, sub-band S2 ... sub-bands S13 are met into above-mentioned condition（Power is more than default interference threshold
The sampled point of value C）The number of sampled point be denoted as DC1, DC2 successively ... DC13, and DC1, DC2 ... DC13 are sent to described
One determination subelement 335.
When first determination subelement 335 determines current sub-band S（n）Belong in sub-band S1~sub-band S12
Any one sub-band, current sub-band S（n）DC（n）More than or equal to the first blocking interference threshold value and the current son frequency
Band S（n）Interior inactivity jump sampled point and power bust sampled point when, determine current sub-band S（n）Son frequency is disturbed for obstruction
Band；When first determination subelement 335 determines current sub-band S（n）Belong to sub-band S（13）, current sub-band S
（13）DC（13）More than or equal to the second blocking interference threshold value and current sub-band S（13）Interior inactivity jump sampled point and
During power bust sampled point, current sub-band S is determined（n）For obstruction interference sub-band；Wherein, the first obstruction interference threshold
Value can be any one in positive integer 10~12；Second blocking interference threshold value can be any one in positive integer 5~6
It is a.
When first determination subelement 335 determines current sub-band S（n）Belong in sub-band S1~sub-band S12
Any one sub-band, current sub-band S（n）DC（n）More than or equal to TD-SCDMA interference thresholds and the current son frequency
Band S（n）During interior only power surge sampling point, current sub-band S is determined（n）Sub-band is disturbed for TD-SCDMA；It alternatively, should
Current sub-band S（n）DC（n）More than or equal to TD-SCDMA interference thresholds and current sub-band S（n）Interior only power is dashed forward
At down-sampled, current sub-band S is determined（n）Sub-band is disturbed for TD-SCDMA；Alternatively, current sub-band S（n）DC
（n）More than or equal to TD-SCDMA interference thresholds and sub-band S（n）Interior existing power surge sampling point also has power bust to adopt
During sampling point, current sub-band S is determined（n）Sub-band is disturbed for TD-SCDMA.Wherein, the TD-SCDMA interference thresholds can be
Any one in positive integer 10~12.
When first determination subelement 335 determines current sub-band S（n）In in sub-band S1~sub-band S13
Any one sub-band, sub-band S（n）DC（n）It is more than or equal to the first spurious interference threshold value and spuious less than or equal to second
When between interference threshold, the sub- present band S is determined（n）For spurious interference subband.Wherein, the first spurious interference threshold value for 1,
Second spurious interference threshold value is 6.
When first determination subelement 335 determines current sub-band S（n）Neither obstruction interference sub-band, also not
It is that TD-SCDMA disturbs sub-band and obstruction interference sub-band, and sub-band S（n）DC（n）During more than or equal to 1, determining should
Current sub-band S（n）For other interference sub-bands.
The information of the interference type of determine 13 sub-bands is sent to described by first determination subelement 335
Second determination unit 35.
As shown in figure 3, second determination unit 35 further comprises：It counts subelement 351 and second and determines that son is single
Member 353；Wherein,
The information of the interference type of determine 13 sub-bands is sent to described by first determination subelement 335
Second determination unit 35 is specifically the statistics subelement 351.
The statistics subelement 351, for the resistance of 13 sub-bands divided to the scanning signal at Current Scan moment
Quantity, the quantity of TD-SCDMA interference sub-bands and the quantity of spurious interference subband of plug interference sub-band are counted,
And statistical result is sent to second determination subelement 353；
Second determination subelement 353, for by the way that the quantity of obstruction interference sub-band, TD-SCDMA interference is sub frequently
The quantity of band and the quantity of spurious interference subband are made comparisons respectively with default first threshold, second threshold, the 3rd threshold value,
Determine the type for the interference that the scanning signal at Current Scan moment is subject to
It is set specifically, second determination subelement 353 determines that the quantity of the obstruction interference sub-band is more than or equal to
During the first threshold put, it is determined that the interference that the scanning signal at the Current Scan moment is subject to is disturbed for obstruction.Wherein, described
One threshold value can be any one positive integer in 8~9.
Second determination subelement 353 determines that the quantity of the TD-SCDMA interference sub-band is more than or equal to what is set
During second threshold, it is determined that the interference that the scanning signal at the Current Scan moment is subject to is disturbed for TD-SCDMA.Wherein, described
Two threshold values are 1.
Second determination subelement 353 determines that the quantity of the spurious interference subband is more than or equal to the 3rd set
During threshold value, determine that the interference that the scanning signal at Current Scan moment is subject to is clutter interference.Wherein, the 3rd threshold value is 1.
Second determination subelement 353 determines that the quantity of other interference sub-bands is more than or equal to the 4th set
During threshold value, determine that the interference that the scanning signal at Current Scan moment is subject to is disturbed for other.Wherein, the 4th threshold value is 1.
Preferably, in embodiments of the present invention, the sampled point quantity in each sub-band is it is known that through the above scheme may be used
Know which sub-band is obstruction interference sub-band, which sub-band is TD-SCDMA interference sub-band, which sub-band is spuious
Disturb sub-band, then interference sample point accounting can be calculated by the following formula.
In quantity/LTE bandwidth of operation of sampled point of the interference sample point accounting=power more than interference threshold value C
All sampled points.
Further, in LTE system shown in Fig. 3 on the basis of the identification device of interference signal, described device is also wrapped
It includes：Computing unit（Not shown in Fig. 3）；
The computing unit, for calculating the accounting of above-mentioned all kinds of interference.
Specifically, the computing unit calculates interference sample point accounting by the following formula.
In quantity/LTE bandwidth of operation of sampled point of the interference sample point accounting=power more than interference threshold value C
All sampled points.
The computing unit also calculates blocking interference sampling point accounting by the following formula.
All sampled points in the blocking interference sampling point accounting=blocking interference sampling point/LTE bandwidth of operation;
Alternatively, the blocking interference sampling point accounting=blocking interference sampling point/power is more than the sampling of interference threshold value C
The quantity of point.
Wherein, the blocking interference sampling point is the number of the sampled point in all obstruction interference sub-bands.
Similar with calculating blocking interference sampling point accounting, the computing unit can also calculate TD-SCDMA interference samples
Point accounting and clutter interference sampled point accounting, which is not described herein again.
It should be noted that the technical solution of above-mentioned record, is also applied for Disturbed Power Systems as TD-SCDMA, interference system is
The situation of LTE；In addition, it is also applied for situations such as Disturbed Power Systems are GSM or WCDMA.
It will be appreciated by those skilled in the art that in LTE system shown in Fig. 3 in the identification device of interference signal everywhere
The realization function of reason unit can refer to the associated description of the recognition methods of interference signal in foregoing LTE system and understand.This field
It will be appreciated by the skilled person that the function of each processing unit can pass through in the identification device of interference signal in LTE system shown in Fig. 3
The program that runs on processor and realize, can also be realized by specific logic circuit.
The recognition methods of interference signal and device in LTE system provided in an embodiment of the present invention, Current Scan moment will have
The scanning signal for having LTE bandwidth of operation is divided at least two sub-bands；Determine the interference that at least two sub-band is subject to
Type；The type of interference according at least two sub-band determines that the scanning signal at the Current Scan moment is subject to
Interference type.The technical solution of the embodiment of the present invention carries out the automatic of interference type to the scanning signal of scanner output
Identification without manual work, saves man power and material and recognition accuracy is high.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the scope of the present invention.
Claims (10)
1. the recognition methods of interference signal in a kind of Long Term Evolution LTE system, which is characterized in that there is the Current Scan moment
The scanning signal of LTE bandwidth of operation is divided at least two sub-bands；The described method includes：
Determine the type for the interference that at least two sub-band is subject to；
The type of interference according at least two sub-band determines that the scanning signal at the Current Scan moment is subject to dry
The type disturbed；
Wherein, the type of the interference for determining at least two sub-band and being subject to, including：
All sampled points of the scanning signal are assigned at least two sub-band；
Count the sampled point that sampling point power in described each sub-band of at least two sub-bands is more than preset interference threshold value
Number；
By in each sub-band be more than the interference threshold value sampled point number respectively with default blocking interference threshold value,
TD-SCDMA interference thresholds and spurious interference threshold value are made comparisons, and determine the type for the interference that each sub-band is subject to.
2. the recognition methods of interference signal in LTE system according to claim 1, which is characterized in that described currently to sweep
It retouches the scanning signal with LTE bandwidth of operation constantly and is divided at least two sub-bands, including：
The scanning signal according to the carrier frequency bandwidth of TDS-CDMA system TD-SCDMA is divided, is divided into ten
Three sub-bands.
3. the recognition methods of interference signal in LTE system according to claim 2, which is characterized in that described by each
Sampled point number in a sub-band more than the interference threshold value is disturbed respectively with default blocking interference threshold value, TD-SCDMA
Threshold value and spurious interference threshold value are made comparisons, and determine the type for the interference that each sub-band is subject to, including：
The type of the sub-band being interfered includes：Obstruction interference sub-band, TD-SCDMA interference sub-band, clutter interference
Sub-band；The default blocking interference threshold value includes：First blocking interference threshold value, the second blocking interference threshold value；It is described default
Spurious interference threshold value include：First spurious interference threshold value, the second spurious interference threshold value；
Correspondingly, when current sub-band belongs to preceding 12 sub-bands in 13 sub-bands, in the current sub-band
The sampled point number that the power having is more than the interference threshold value is more than or equal to the first blocking interference threshold value and the current son
In frequency band inactivity jump sampled point and power bust sampled point when, determine current sub-band be obstruction interference sub-band；Currently
When sub-band is the 13rd sub-band, it is more than the sampled point of the interference threshold value in the power that the current sub-band has
Number is more than or equal to inactivity in the second blocking interference threshold value and the current sub-band and jumps sampled point and the sampling of power bust
During point, it is obstruction interference sub-band to determine the current sub-band；
When current sub-band belongs to preceding 12 sub-bands in 13 sub-bands, in the work(that the current sub-band has
The sampled point number that rate is more than the interference threshold value is more than or equal to TD-SCDMA interference thresholds and the current sub-band only has
During power surge sampling point, determine that the sub-band disturbs sub-band for TD-SCDMA；Alternatively, have in the current sub-band
The sampled point number that power is more than the interference threshold value is more than or equal to TD-SCDMA interference thresholds and the current sub-band only
When having power bust sampled point, determine that the sub-band disturbs sub-band for TD-SCDMA；Alternatively, have in the current sub-band
Power be more than the interference threshold value sampled point number be more than or equal to TD-SCDMA interference thresholds and the current sub-band
When existing power surge sampling point also has power bust sampled point, determine that the sub-band disturbs sub-band for TD-SCDMA；
Current sub-band belongs to any one sub-band in 13 sub-bands, and the power having in the current sub-band
Sampled point number more than the interference threshold value is more than or equal to the first spurious interference threshold value and less than or equal to the second clutter interference
When between threshold value, it is spurious interference subband to determine the current sub-band；Wherein, first spurious interference threshold value is less than institute
State the second spurious interference threshold value.
4. the recognition methods of interference signal in LTE system according to claim 3, which is characterized in that described in the foundation
The type of the interference of at least two sub-bands determines the type for the interference that the scanning signal at the Current Scan moment is subject to, bag
It includes：
Quantity, the number of TD-SCDMA interference sub-bands to the obstruction interference sub-band of 13 sub-bands at Current Scan moment
The quantity of amount and spurious interference subband is counted；
By the way that the quantity of the obstruction interference sub-band counted, TD-SCDMA to be disturbed to the quantity of sub-band and clutter interference
The quantity of frequency band is made comparisons respectively with default first threshold, second threshold, the 3rd threshold value, and determines the Current Scan moment
The type for the interference that scanning signal is subject to.
5. the recognition methods of interference signal in LTE system according to claim 4, which is characterized in that described by that will unite
Quantity, the quantity of TD-SCDMA interference sub-bands and the quantity point of spurious interference subband for the obstruction interference sub-band counted out
It does not make comparisons with default first threshold, second threshold, the 3rd threshold value, and determines the scanning signal at Current Scan moment and be subject to
Interference type, including：
Count the quantity of obstruction interference sub-band in 13 sub-bands of Current Scan moment, the number of TD-SCDMA interference sub-bands
The quantity of amount and spurious interference subband；
When the quantity of the obstruction interference sub-band is more than or equal to the first threshold set, the Current Scan moment is determined
The interference that scanning signal is subject to is disturbed for obstruction；
When the quantity of TD-SCDMA interference sub-bands is more than or equal to the second threshold set, when determining the Current Scan
The interference that the scanning signal at quarter is subject to is disturbed for TD-SCDMA；
When the quantity of the spurious interference subband is more than or equal to three threshold value set, the Current Scan moment is determined
The interference that scanning signal is subject to is clutter interference.
6. the identification device of interference signal in a kind of Long Term Evolution LTE system, which is characterized in that described device includes：Division is single
Member, the first determination unit and the second determination unit；Wherein,
The division unit, the scanning signal for the Current Scan moment to be had to LTE bandwidth of operation are divided at least two sons
Frequency band；
First determination unit, for determining the type of interference that at least two sub-band is subject to；
Second determination unit for the type of the interference according at least two sub-band, determines the Current Scan
The type for the interference that the scanning signal at moment is subject to；
Wherein, first determination unit includes：Distribute subelement, statistics subelement and the first determination subelement；
Wherein,
The distribution subelement, for all sampled points of the scanning signal to be assigned at least two sub-band；
The statistics subelement, for counting, sampling point power is more than in advance in each sub-band at least two sub-band
If the sampled point number of interference threshold value；
First determination subelement, for pass through in each sub-band more than interference threshold value sampled point number respectively with
Default blocking interference threshold value, TD-SCDMA interference thresholds and spurious interference threshold value are made comparisons, and determine what each sub-band was subject to
The type of interference.
7. according to claim 6 in LTE system interference signal identification device, which is characterized in that the division unit, also
For the scanning signal to be divided according to the carrier frequency bandwidth of TDS-CDMA system TD-SCDMA, ten are divided into
Three sub-bands.
8. the identification device of interference signal in LTE system according to claim 7, which is characterized in that described first determines
Subelement is additionally operable to：
It determines that current sub-band belongs to preceding 12 sub-bands in 13 sub-bands, has in the current sub-band
Power be more than the interference threshold value sampled point number be more than or equal to the first blocking interference threshold value and the current sub-band
Interior inactivity jump sampled point and power bust sampled point when, determine current sub-band be obstruction interference sub-band；Current son frequency
When band is the 13rd sub-band, it is more than the sampled point number of the interference threshold value in the power that the current sub-band has
It jumps sampled point and power bust sampled point more than or equal to inactivity in the second blocking interference threshold value and the current sub-band
When, it is obstruction interference sub-band to determine the current sub-band；
It determines that current sub-band belongs to preceding 12 sub-bands in 13 sub-bands, has in the current sub-band
Power be more than the interference threshold value sampled point number be more than or equal to TD-SCDMA interference thresholds and the current sub-band
Only power surge sampling point when, determine the sub-band for TD-SCDMA disturb sub-band；Alternatively, have in the current sub-band
The sampled point number that some power is more than the interference threshold value is more than or equal to TD-SCDMA interference thresholds and the current son frequency
Band only power bust sampled point when, determine the sub-band for TD-SCDMA disturb sub-band；Alternatively, in the current sub-band
The sampled point number that the power having is more than the interference threshold value is more than or equal to TD-SCDMA interference thresholds and the current son
When the existing power surge sampling point of frequency band also has power bust sampled point, determine that the sub-band disturbs sub-band for TD-SCDMA；
It determines any one sub-band that current sub-band belongs in 13 sub-bands, has in the current sub-band
The sampled point number that power is more than the interference threshold value is more than or equal to the first spurious interference threshold value and spuious less than or equal to second
When between interference threshold, it is spurious interference subband to determine the current sub-band；Wherein, the sub-band being interfered
Type includes：Obstruction interference sub-band, TD-SCDMA interference sub-band, spurious interference subband；The default obstruction interference
Threshold value includes：First blocking interference threshold value, the second blocking interference threshold value；The default spurious interference threshold value includes：First is miscellaneous
Dissipate interference threshold, the second spurious interference threshold value；First spurious interference threshold value is less than second spurious interference threshold value.
9. the identification device of interference signal in LTE system according to claim 8, which is characterized in that described second determines
Unit includes：Count subelement and the second determination subelement；Wherein,
The statistics subelement, quantity, TD- for the obstruction interference sub-band of 13 sub-bands to the Current Scan moment
The quantity and the quantity of spurious interference subband of SCDMA interference sub-bands are counted, and statistical result are sent to described
Second determination subelement；
Second determination subelement, for the number by the way that the quantity of obstruction interference sub-band, TD-SCDMA to be disturbed to sub-band
The quantity of amount and spurious interference subband is made comparisons respectively with default first threshold, second threshold, the 3rd threshold value, is determined
The type for the interference that the scanning signal at Current Scan moment is subject to.
10. the identification device of interference signal in LTE system according to claim 9, which is characterized in that described second determines
Unit is additionally operable to：
When determining that the quantity of the obstruction interference sub-band is more than or equal to the first threshold set, the Current Scan moment is determined
The interference that is subject to of scanning signal disturbed for obstruction；
When determining that the quantity of the TD-SCDMA interference sub-band is more than or equal to the second threshold set, the Current Scan is determined
The interference that the scanning signal at moment is subject to is disturbed for TD-SCDMA；
When determining that the quantity of the spurious interference subband is more than or equal to three threshold value set, the Current Scan moment is determined
The interference that is subject to of scanning signal be clutter interference.
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