CN104378782A - Identification method and device for interference signal in LTE system - Google Patents
Identification method and device for interference signal in LTE system Download PDFInfo
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- CN104378782A CN104378782A CN201310358437.8A CN201310358437A CN104378782A CN 104378782 A CN104378782 A CN 104378782A CN 201310358437 A CN201310358437 A CN 201310358437A CN 104378782 A CN104378782 A CN 104378782A
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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 an identification method for an interference signal in an LTE system. The method includes the steps of dividing a scanning signal provided with LTE work bandwidth at the current scanning moment into at least two sub-bands, determining the type of interference on the at least two sub-bands, and determining the type of interference on the scanning signal at the current scanning moment according to the type of the interference on the at least two sub-bands. Meanwhile, the invention further discloses an identification device of the interference signal in the evolution LTE system. According to the identification method for the interference signal in the LTE system, automatic identification of the interference signal in the LTE system can be achieved, and therefore manpower and material resources are saved.
Description
Technical field
The present invention relates to the recognition technology of communication system interference signal, be specifically related to recognition methods and the device of interference signal in a kind of long evolving system (LTE, Long Term Evolution) system.
Background technology
Wireless communication technology comprises following several: LTE, global mobile way system (GSM, Global SystemFor Mobile Communication), TDS-CDMA system (TD-SCDMA, TimeDivision Synchronous Code Division Multiple Access), code division multiple access (CDMA, CodeDivision Multiple Access) and Wideband Code Division Multiple Access (WCDMA) (WCDMA, Wideband Code DivisionMultiple Access) etc.
Due to the finiteness of frequency spectrum resource and the similitude of network topology structure, between above-mentioned several communication system, have identical working frequency range.Now illustrate: during using LTE as main system (Disturbed Power Systems), its spendable working frequency range comprises: F-band and D frequency range; Wherein, F-band is 1880 megahertzes (Mhz) ~ 1900Mhz; D frequency range is 2570Mhz ~ 2620Mhz.TD-SCDMA also can work in F-band, and when Disturbed Power Systems LTE uses F-band, TD-SCDMA will produce inter-system interference to LTE system; In addition, because frequency range interval is less, work in the Personal Handyphone System of 1900Mhz ~ 1915MMhz and work in 1800Mhz frequency band GSM, all will produce humorous wave interference and Intermodulation Interference to main system LTE.
As can be seen here, no matter using which kind of communication system as main system, which communication system is as EVAC (Evacuation Network Computer Model), and described EVAC (Evacuation Network Computer Model) all can produce interference to main system.In prior art, the method of EVAC (Evacuation Network Computer Model) signal (interference signal) that identifies in Disturbed Power Systems of usual employing is: utilize scanner to scan Disturbed Power Systems signal, because scanner has instantaneous spectrum figure and this characteristic of time-domain diagram of exportable setting frequency band signals, therefore tester can have this different features and the test experience of self according to the spectrogram of the spectrogram of Disturbed Power Systems signal, time-domain diagram and interference signal, time-domain diagram, identifies the interference signal in Disturbed Power Systems.
Although said method identifiable design goes out the interference signal in Disturbed Power Systems, but need tester to carry out point-to-point analysis to the mass data that scanner exports, and the data of a scanner frequency sweep often last tens hours, data volume is very large, and this manual work mode makes that the method is time-consuming, effort, accuracy rate cannot be guaranteed.
Summary of the invention
In view of this, main purpose of the present invention is the recognition methods and the device that provide interference signal in a kind of LTE system, automatically can realize the identification of the interference signal in LTE system, without the need to manual work, time saving and energy saving and recognition accuracy is high.
For achieving the above object, technical scheme of the present invention is achieved in that
Embodiments provide the recognition methods of interference signal in a kind of Long Term Evolution LTE system, the sweep signal Current Scan moment with LTE bandwidth of operation is divided at least two sub-bands; Described method also comprises:
The type of the interference that at least two sub-bands described in determining are subject to;
According to the type of the interference of described at least two sub-bands, determine the type of the interference that the sweep signal in described Current Scan moment is subject to.
In such scheme, the described sweep signal Current Scan moment with LTE bandwidth of operation is divided at least two sub-bands, comprising:
The carrier frequency bandwidth of described sweep signal according to TDS-CDMA system TD-SCDMA is divided, is divided into 13 sub-bands.
In such scheme, described determine described in the type of interference that is subject to of at least two sub-bands, comprising:
All sampled points of described sweep signal are assigned in described 13 sub-bands;
Add up sampled point power in described 13 each sub-bands of sub-band and be greater than the sampled point number of default interference threshold value;
Made comparisons with barrage jamming threshold value, TD-SCDMA interference threshold and the clutter interference threshold value preset respectively by the sampled point number being greater than described interference threshold value in each sub-band, and determine the type of the interference that each sub-band is subject to.
In such scheme, the described sampled point number by being greater than described interference threshold value in each sub-band is made comparisons with barrage jamming threshold value, TD-SCDMA interference threshold and the clutter interference threshold value preset respectively, and determine the type of the interference that each sub-band is subject to, comprising:
The type of the described sub-band be interfered comprises: barrage jamming sub-band, TD-SCDMA disturb sub-band, clutter interference sub-band; Described default barrage jamming threshold value comprises: the first barrage jamming threshold value, the second barrage jamming threshold value; Described default clutter interference threshold value comprises: the first clutter interference threshold value, the second clutter interference threshold value;
Accordingly, when current sub-band belongs to front 12 sub-bands in described 13 sub-bands, the sampled point number that the power that described current sub-band has is greater than described interference threshold value be more than or equal to the first barrage jamming threshold value and in described current sub-band inactivity jump sampled point and power bust sampled point time, determine that current sub-band is barrage jamming sub-band; When current sub-band is the 13 sub-band, the sampled point number that the power that described current sub-band has is greater than described interference threshold value be more than or equal to the second barrage jamming threshold value and in described current sub-band inactivity jump sampled point and power bust sampled point time, determine that described current sub-band is barrage jamming sub-band;
When current sub-band belongs to front 12 sub-bands in described 13 sub-bands, the sampled point number that the power that described current sub-band has is greater than described interference threshold value be more than or equal to TD-SCDMA interference threshold and described current sub-band only have power jump sampled point time, determine that this sub-band is that TD-SCDMA disturbs sub-band; Or, when the sampled point number that the power that described current sub-band has is greater than described interference threshold value is more than or equal to TD-SCDMA interference threshold and described current sub-band only has a power bust sampled point, determine that this sub-band is that TD-SCDMA disturbs sub-band; Or, when the sampled point number that the power that described current sub-band has the is greater than described interference threshold value sampled point that is more than or equal to TD-SCDMA interference threshold and the existing power of described current sub-band jumps also has power bust sampled point, determine that this sub-band is that TD-SCDMA disturbs sub-band;
Current sub-band belongs to any one sub-band in 13 sub-bands, and when the sampled point number that the power that described current sub-band has is greater than described interference threshold value is more than or equal to the first clutter interference threshold value and is less than or equal between the second clutter interference threshold value, determine that described current sub-band is clutter interference sub-band; Wherein, described first clutter interference threshold value is less than described second clutter interference threshold value.
In such scheme, the type of the interference of at least two sub-bands described in described foundation, determine the type of the interference that the sweep signal in described Current Scan moment is subject to, comprising:
The quantity of sub-band and the quantity of clutter interference sub-band is disturbed to add up to the quantity of the barrage jamming sub-band of 13 sub-bands in Current Scan moment, TD-SCDMA;
By disturbing the quantity of the quantity of sub-band and clutter interference sub-band to make comparisons with the first threshold preset, Second Threshold, the 3rd threshold value respectively the quantity of the barrage jamming counted sub-band, TD-SCDMA, and determine the type of the interference that the sweep signal in Current Scan moment is subject to.
In such scheme, described by disturbing the quantity of the quantity of sub-band and clutter interference sub-band to make comparisons with the first threshold preset, Second Threshold, the 3rd threshold value respectively the quantity of the barrage jamming sub-band counted, TD-SCDMA, and determine the type of the interference that the sweep signal in Current Scan moment is subject to, comprising:
Add up the quantity of barrage jamming sub-band in Current Scan moment 13 sub-bands, TD-SCDMA disturbs the quantity of sub-band and the quantity of clutter interference sub-band;
When the quantity of described barrage jamming sub-band is more than or equal to the first threshold of setting, determine that the interference that the sweep signal in described Current Scan moment is subject to is barrage jamming;
When described TD-SCDMA disturbs the quantity of sub-band to be more than or equal to the Second Threshold of setting, determine that the interference that the sweep signal in described Current Scan moment is subject to is TD-SCDMA interference;
When the quantity of described clutter interference sub-band is more than or equal to the 3rd threshold value of setting, determine that the interference that the sweep signal in described Current Scan moment is subject to is clutter interference.
The embodiment of the present invention additionally provides the recognition device of interference signal in a kind of Long Term Evolution LTE system, and described device comprises: division unit, the first determining unit and the second determining unit; Wherein,
Described division unit, is divided at least two sub-bands for the sweep signal Current Scan moment with LTE bandwidth of operation;
Described first determining unit, for the type of the interference that at least two sub-bands described in determining are subject to;
Described second determining unit, for the type of the interference according to described at least two sub-bands, determines the type of the interference that the sweep signal in described Current Scan moment is subject to.
In such scheme, described division unit, also for the carrier frequency bandwidth of described sweep signal according to TDS-CDMA system TD-SCDMA being divided, is divided into 13 sub-bands.
In such scheme, described first determining unit comprises: distribute subelement, subelement determined by statistics subelement and first;
Wherein,
Described distribution subelement, for being assigned in described 13 sub-bands by all sampled points of described sweep signal;
Described statistics subelement, is greater than the sampled point number of default interference threshold value for adding up in described 13 sub-bands sampled point power in each sub-band;
Described first determines subelement, making comparisons with barrage jamming threshold value, TD-SCDMA interference threshold and the clutter interference threshold value preset respectively for the sampled point number by being greater than interference threshold value in each sub-band, determining the type of the interference that each sub-band is subject to.
In such scheme, described first determines subelement, also for:
Determine that current sub-band belongs to front 12 sub-bands in described 13 sub-bands, the sampled point number that the power that described current sub-band has is greater than described interference threshold value be more than or equal to the first barrage jamming threshold value and in described current sub-band inactivity jump sampled point and power bust sampled point time, determine that current sub-band is barrage jamming sub-band; When current sub-band is the 13 sub-band, the sampled point number that the power that described current sub-band has is greater than described interference threshold value be more than or equal to the second barrage jamming threshold value and in described current sub-band inactivity jump sampled point and power bust sampled point time, determine that described current sub-band is barrage jamming sub-band;
Determine that current sub-band belongs to front 12 sub-bands in described 13 sub-bands, the sampled point number that the power that described current sub-band has is greater than described interference threshold value be more than or equal to TD-SCDMA interference threshold and described current sub-band only have power jump sampled point time, determine that this sub-band is that TD-SCDMA disturbs sub-band; Or, when the sampled point number that the power that described current sub-band has is greater than described interference threshold value is more than or equal to TD-SCDMA interference threshold and described current sub-band only has a power bust sampled point, determine that this sub-band is that TD-SCDMA disturbs sub-band; Or, when the sampled point number that the power that described current sub-band has the is greater than described interference threshold value sampled point that is more than or equal to TD-SCDMA interference threshold and the existing power of described current sub-band jumps also has power bust sampled point, determine that this sub-band is that TD-SCDMA disturbs sub-band;
Determine that current sub-band belongs to any one sub-band in 13 sub-bands, when the sampled point number that the power that described current sub-band has is greater than described interference threshold value is more than or equal to the first clutter interference threshold value and is less than or equal between the second clutter interference threshold value, determine that described current sub-band is clutter interference sub-band; Wherein, the type of the sub-band be interfered described in comprises: barrage jamming sub-band, TD-SCDMA disturb sub-band, clutter interference sub-band; Described default barrage jamming threshold value comprises: the first barrage jamming threshold value, the second barrage jamming threshold value; Described default clutter interference threshold value comprises: the first clutter interference threshold value, the second clutter interference threshold value; Described first clutter interference threshold value is less than described second clutter interference threshold value.
In such scheme, described second determining unit comprises: subelement determined by statistics subelement and second; Wherein,
Described statistics subelement, disturb the quantity of sub-band and the quantity of clutter interference sub-band to add up for the quantity of the barrage jamming sub-band of 13 sub-bands to the Current Scan moment, TD-SCDMA, and statistics is sent to described second and determines subelement;
Described second determines subelement, for by disturbing the quantity of the quantity of sub-band and clutter interference sub-band to make comparisons with the first threshold preset, Second Threshold, the 3rd threshold value respectively the quantity of barrage jamming sub-band, TD-SCDMA, determine the type of the interference that the sweep signal in Current Scan moment is subject to.
In such scheme, described second determining unit, also for:
When determining that the quantity of described barrage jamming sub-band is more than or equal to the first threshold of setting, determine that the interference that the sweep signal in this Current Scan moment is subject to is barrage jamming;
When determining that described TD-SCDMA disturbs the quantity of sub-band to be more than or equal to the Second Threshold of setting, determine that the interference that the sweep signal in this Current Scan moment is subject to is TD-SCDMA interference;
When determining that the quantity of described clutter interference sub-band is more than or equal to the 3rd threshold value of setting, determine that the interference that the sweep signal in this Current Scan moment is subject to is clutter interference.
The recognition methods of interference signal and device in the LTE system that the embodiment of the present invention provides, the sweep signal Current Scan moment with LTE bandwidth of operation is divided at least two sub-bands; The type of the interference that at least two sub-bands described in determining are subject to; According to the type of the interference of described at least two sub-bands, determine the type of the interference that the sweep signal in described Current Scan moment is subject to.The technical scheme of the embodiment of the present invention, carries out the automatic identification of interference type to the sweep signal that scanner exports, and without the need to manual work, saves man power and material and recognition accuracy is high.
Accompanying drawing explanation
Fig. 1 is the realization flow schematic diagram of the recognition methods of interference signal in the LTE system of the embodiment of the present invention;
Fig. 2 is the specific implementation schematic flow sheet of the recognition methods of interference signal in the LTE system of the embodiment of the present invention;
Fig. 3 is the composition structural representation of the recognition device of interference signal in the LTE system of the embodiment of the present invention.
Embodiment
When using LTE as Disturbed Power Systems, maximum interference source comes from barrage jamming, co-channel interference, clutter interference etc.Wherein, described clutter interference comprises: humorous wave interference, Intermodulation Interference etc.When LTE works in F-band, described co-channel interference source is TD-SCDMA.In addition, interference source also comprises in communication transmission process and keeps away other interference unavoidable.
The embodiment of the present invention describes the recognition methods of interference signal in a kind of LTE system, and as shown in Figure 1, described method comprises:
Step 11: the sweep signal Current Scan moment with LTE bandwidth of operation is divided at least two sub-band Sn.
Wherein, n is the number of sub-band divided, for positive integer and n >=2.
In the technical scheme that the present invention records, Current Scan moment scanner output scanning signal, described sweep band width is LTE bandwidth of operation, is 1900Mhz-1880Mhz=20Mhz.Simultaneously, the carrier frequency bandwidth of interference signal TD-SCDMA is 1.6Mhz, in units of carrier frequency bandwidth 1.6Mhz, LTE bandwidth of operation 20Mhz is carried out the division of sub-band, 20/1.6 can be divided into round up and equal 13 sub-bands, the sub-band divided is followed successively by sub-band S1, sub-band S2 ... sub-band S12 and sub-band S13, also can be called the first frequency sub-band, the second sub-band ... 12 sub-band and the 13 sub-band.
Step 12: the type of the interference that at least two sub-bands described in determining are subject to.
In the described Current Scan moment, need to determine sub-band S1, sub-band S2 respectively ... the type of the interference that sub-band S12 and sub-band S13 is subject to separately.
As shown in Figure 2, step 12 comprises further:
Step 121: at least two sub-bands described in all sampled points with the sweep signal of LTE bandwidth of operation are assigned to.
Here, number Num=200 of signal sampling point in LTE bandwidth of operation is pre-set, each sampled point bandwidth SB=20Mhz/200=100Khz.Described 200 sampled points are evenly distributed in 13 sub-bands of above-mentioned division, then all include in 16 sampled points, sub-band S13 in each sub-band of sub-band S1 to sub-band S12 and include 8 sampled points.
Wherein, in described LTE bandwidth of operation, the number of signal sampling point is arranged flexibly according to the demand of practical application.
Step 122: add up sampled point power in described 13 frequency bands each sub-band interior and be greater than the sampled point number of default interference threshold value C.
Here, statistics sub-band S1 internal power is greater than the number of the sampled point of described interference threshold value C is DC1; The number being greater than the sampled point of described interference threshold value C in statistics sub-band S2 power is DC2; By that analogy, adding up the number being greater than the sampled point of described interference threshold value C in sub-band S13 power is DC13.
Here, the sampled point that jumped by power is defined as: adjacent two sampled point Sa(i) and Sa(i+1), as sampled point Sa(i+1) power is greater than sampled point Sa(i) power 8dB ~ 15dB time, by sampled point Sa(i+1) be referred to as power and jump sampled point definition; Similar, as sampled point Sa(i+1) power is less than sampled point Sa(i) power 8dB ~ 15dB time, by sampled point Sa(i+1) be referred to as power bust sampled point; Wherein, i is positive integer and i≤15.
Step 123: made comparisons with barrage jamming threshold value, TD-SCDMA interference threshold and the clutter interference threshold value preset respectively by the sampled point number being greater than interference threshold value C in each sub-band, determine the type of the interference that each sub-band is subject to.
In this step, because the interference source of type, the i.e. LTE system of interference that LTE system is subject to comprises: barrage jamming, TD-SCDMA interference and clutter interference.The realization approach of the embodiment of the present invention is the type of the interference be subject to first determining sub-band, and then the type be interfered by 13 sub-bands determines the type of the interference that the sweep signal in described Current Scan moment is subject to again.
Following technical scheme is the type of the interference be subject to of each sub-band determined in sub-band S1 ~ sub-band S13.
Concrete, determine that interference that sub-band is subject to is that the process of barrage jamming (determining that current sub-band is barrage jamming sub-band) comprising:
Because sub-band S1 ~ S12 is not identical with the sampled point number that sub-band S13 comprises, so when 13 sub-bands determining above-mentioned division are barrage jamming sub-band, need the interference type determining that sub-band S1 ~ sub-band S12 and sub-band S13 is subject to respectively.Described barrage jamming threshold value comprises: the first barrage jamming threshold value, the second barrage jamming threshold value.
Suppose that current sub-band is sub-band S(n), this sub-band S(n) the internal power number that is greater than the sampled point of described interference threshold value C is DC(n).
As this sub-band S(n) belong in sub-band S1 ~ sub-band S12 any one sub-band, i.e. n=1 ~ 12 in any one positive integer time, this sub-band S(n) DC(n) be more than or equal to the first barrage jamming threshold value and this sub-band S(n) and interior inactivity jump sampled point and power bust sampled point time, determine this sub-band S(n) be barrage jamming sub-band; Wherein, described first barrage jamming threshold value can be any one in positive integer 10 ~ 12.
As this sub-band S(n) belong to sub-band S(13), namely n=13 time, this sub-band S(n) DC(n) be more than or equal to the second barrage jamming threshold value and this sub-band S(n) and interior inactivity jump sampled point and power bust sampled point time, determine this sub-band S(n) be barrage jamming sub-band; Wherein, described second barrage jamming threshold value can be any one in positive integer 5 ~ 6.
Concrete, determine that the interference that sub-band is subject to is that TD-SCDMA disturbs the process of (determining that current sub-band is that TD-SCDMA disturbs sub-band) to comprise:
As this sub-band S(n) belong in sub-band S1 ~ sub-band S12 any one sub-band, i.e. n=1 ~ 12 in any one positive integer time, this sub-band S(n) DC(n) be more than or equal to TD-SCDMA interference threshold and this sub-band S(n) and in only have power jump sampled point time, determine this sub-band S(n) be TD-SCDMA disturb sub-band;
Or, this sub-band S(n) DC(n) be more than or equal to TD-SCDMA interference threshold and this sub-band S(n) and in when only having a power bust sampled point, determine this sub-band S(n) be that TD-SCDMA disturbs sub-band;
Or, this sub-band S(n) DC(n) be more than or equal to TD-SCDMA interference threshold and this sub-band S(n) and in existing power jump sampled point when also having a power bust sampled point, determine this sub-band S(n) be that TD-SCDMA disturbs sub-band.
Wherein, described TD-SCDMA interference threshold can be any one in positive integer 10 ~ 12.
Concrete, determine that interference that subbands is subject to is that the process of clutter interference (determining that current sub-band is clutter interference sub-band) comprising: described clutter interference threshold value comprises: the first clutter interference threshold value, the second clutter interference threshold value.
As this sub-band S(n) belong to any one sub-band in sub-band S1 ~ sub-band S13, this sub-band S(n) DC(n) when being more than or equal to the first clutter interference threshold value and being less than or equal between the second clutter interference threshold value, determine this sub-band S(n) be clutter interference sub-band.Wherein, the first clutter interference threshold value is the 1, second clutter interference threshold value is 6.
Preferably, at this sub-band S(n) neither barrage jamming sub-band, sub-band and barrage jamming sub-band neither be disturbed by TD-SCDMA, and this sub-band S(n) DC(n) when being more than or equal to 1, determine this sub-band S(n) be other interference sub-bands.
It should be noted that, above-mentionedly determine that sub-band is that barrage jamming sub-band or TD-SCDMA interference or the process of clutter interference sub-band according to the demand of practical application to determine sequencing, also can carry out the determination of sub-band interference type simultaneously.
Step 13: according to the type of the interference of described at least two sub-bands, determines the type of the interference that described sweep signal is subject to.
In this step, the quantity of barrage jamming sub-band, the TD-SCDMA interference quantity of sub-band and the quantity of clutter interference sub-band in 13 sub-bands that the statistics Current Scan moment divides sweep signal.
When the quantity of described barrage jamming sub-band is more than or equal to the first threshold of setting, determine that the interference that the sweep signal in this Current Scan moment is subject to is barrage jamming.Wherein, described first threshold can be any one positive integer in 8 ~ 9.
When described TD-SCDMA disturbs the quantity of sub-band to be more than or equal to the Second Threshold of setting, determine that the interference that the sweep signal in this Current Scan moment is subject to is TD-SCDMA interference.Wherein, described Second Threshold is 1.
When the quantity of described clutter interference sub-band is more than or equal to the 3rd threshold value of setting, determine that the interference that the sweep signal in this Current Scan moment is subject to is clutter interference.Wherein, described 3rd threshold value is 1.
When the quantity of other interference sub-bands described is more than or equal to the 4th threshold value of setting, determine that the interference that the sweep signal in this Current Scan moment is subject to is other interference.Wherein, described 4th threshold value is 1.
Preferably, in embodiments of the present invention, sampled point quantity in each sub-band is known, by such scheme which sub-band known be barrage jamming sub-band, which sub-band is that TD-SCDMA disturbs sub-band, which sub-band to be clutter interference sub-band, so just can go out interference sample point accounting by following formulae discovery.
Described interference sample point accounting=power is greater than all sampled points in the quantity/LTE bandwidth of operation of the sampled point of interference threshold value C.
In addition, barrage jamming sampled point accounting can also be gone out by following formulae discovery.
All sampled points in described barrage jamming sampled point accounting=barrage jamming sampled point/LTE bandwidth of operation;
Or described barrage jamming sampled point accounting=barrage jamming sampled point/power is greater than the quantity of the sampled point of interference threshold value C.
Wherein, described barrage jamming sampled point is the number of the sampled point in all barrage jamming sub-bands.
Similar with calculating barrage jamming sampled point accounting, TD-SCDMA interference sample point accounting and clutter interference sampled point accounting can also be calculated, repeat no more here.
The process more than calculating each accounting is prior art, does not do too much introduction at this.
Based on the recognition methods of interference signal in above-mentioned LTE system, the embodiment of the present invention additionally provides the recognition device of interference signal in a kind of LTE system, and as shown in Figure 3, described device comprises: division unit 31, first determining unit 33 and the second determining unit 35; Wherein,
Described division unit 31, is divided at least two sub-band Sn for the sweep signal Current Scan moment with LTE bandwidth of operation;
Described first determining unit 33, for the type of the interference that at least two sub-bands described in determining are subject to;
Described second determining unit 35, for the type of the interference according to described at least two sub-bands, determines the type of the interference that the sweep signal in described Current Scan moment is subject to.
Wherein, n is the number of sub-band divided, for positive integer and n >=2; The type of the interference that described sub-band is subject to, the type of interference that also namely the sweep signal in described Current Scan moment is subject to comprise: barrage jamming, TD-SCDMA interference, clutter interference and other interference except above-mentioned interference.Accordingly, the type of the sub-band be interfered described in comprises: barrage jamming sub-band, TD-SCDMA disturb sub-band, clutter interference sub-band and other interference sub-bands.
Described division unit 31, specifically in units of the carrier frequency bandwidth 1.6Mhz of TD-SCDMA, LTE bandwidth of operation is equaled to the signal bandwidth 20Mhz(of the sweep signal that described Current Scan moment scanner exports) carry out the division of sub-band, be divided into 20/1.6 altogether to round up and equal 13 sub-bands, the sub-band divided is followed successively by sub-band S1, sub-band S2 ... sub-band S12 and sub-band S13, also can be called the first frequency sub-band, the second sub-band ... 12 sub-band and the 13 sub-band.
As shown in Figure 3, the first determining unit 33 comprises further: distribute subelement 331, statistics subelement 333, first is determined subelement 335 and arranges subelement 337; Wherein,
Described subelement 337 is set, for arranging the number of signal sampling point in LTE bandwidth of operation;
Here, described the number Num=200 that subelement 337 arranges signal sampling point in described LTE bandwidth of operation is set;
Described distribution subelement 331, at least two sub-bands described in being assigned to by set all signal sampling points;
Described statistics subelement 333, is greater than the sampled point number of default interference threshold value C for sampled point power in each sub-band at least two sub-bands described in adding up;
Described first determines subelement 335, making comparisons with barrage jamming threshold value, TD-SCDMA interference threshold and the clutter interference threshold value preset respectively for the sampled point number by being greater than interference threshold value C in each sub-band, determining the type of the interference that each sub-band is subject to.
Concrete, described distribution subelement 331 arranges 200 sampled points that subelement 337 arranges be evenly distributed in 13 above-mentioned sub-bands by described, and to distribute in each sub-band of sub-band S1 to sub-band S12 be 16 sampled points, sub-band S13 is 8 sampled points.Above-mentioned allocation result is informed to described statistics subelement 333 by described distribution subelement 331, and described statistics subelement 333 is greater than the sampled point of default interference threshold value C number to sampled point power in each sub-band is added up; And sub-band S1, the sub-band S2 that will count on ... the number that sub-band S13 meets the sampled point of above-mentioned condition (power is greater than the sampled point of default interference threshold value C) is designated as DC1, DC2 successively ... DC13, and by DC1, DC2 ... DC13 is sent to described first and determines subelement 335.
When described first determines that current sub-band S(n determined by subelement 335) belong to any one sub-band in sub-band S1 ~ sub-band S12, this current sub-band S(n) DC(n) be more than or equal to the first barrage jamming threshold value and this current sub-band S(n) and interior inactivity jump sampled point and power bust sampled point time, determine this current sub-band S(n) be barrage jamming sub-band; When described first determines that current sub-band S(n determined by subelement 335) belong to sub-band S(13), this current sub-band S(13) DC(13) be more than or equal to the second barrage jamming threshold value and this current sub-band S(13) and interior inactivity jump sampled point and power bust sampled point time, determine this current sub-band S(n) be barrage jamming sub-band; Wherein, described first barrage jamming threshold value can be any one in positive integer 10 ~ 12; Described second barrage jamming threshold value can be any one in positive integer 5 ~ 6.
When described first determines that current sub-band S(n determined by subelement 335) belong to any one sub-band in sub-band S1 ~ sub-band S12, this current sub-band S(n) DC(n) be more than or equal to TD-SCDMA interference threshold and this current sub-band S(n) and in only have power jump sampled point time, determine this current sub-band S(n) be TD-SCDMA disturb sub-band; Or, this current sub-band S(n) DC(n) be more than or equal to TD-SCDMA interference threshold and this current sub-band S(n) and in when only having a power bust sampled point, determine this current sub-band S(n) be that TD-SCDMA disturbs sub-band; Or, this current sub-band S(n) DC(n) be more than or equal to TD-SCDMA interference threshold and this sub-band S(n) and in existing power jump sampled point when also having a power bust sampled point, determine this current sub-band S(n) be that TD-SCDMA disturbs sub-band.Wherein, described TD-SCDMA interference threshold can be any one in positive integer 10 ~ 12.
When described first determines that current sub-band S(n determined by subelement 335) any one sub-band in sub-band S1 ~ sub-band S13, this sub-band S(n) DC(n) when being more than or equal to the first clutter interference threshold value and being less than or equal between the second clutter interference threshold value, determine this sub-present band S(n) be clutter interference sub-band.Wherein, the first clutter interference threshold value is the 1, second clutter interference threshold value is 6.
When described first determines that current sub-band S(n determined by subelement 335) neither barrage jamming sub-band, sub-band and barrage jamming sub-band neither be disturbed by TD-SCDMA, and this sub-band S(n) DC(n) when being more than or equal to 1, determine this current sub-band S(n) be other interference sub-bands.
Described first determines that the information of the interference type of determine 13 sub-bands is sent to described second determining unit 35 by subelement 335.
As shown in Figure 3, described second determining unit 35 comprises further: subelement 353 determined by statistics subelement 351 and second; Wherein,
Described first determines that the information of the interference type of determine 13 sub-bands is sent to described second determining unit 35, specifically described statistics subelement 351 by subelement 335.
Described statistics subelement 351, disturb the quantity of sub-band and the quantity of clutter interference sub-band to add up for the quantity of the barrage jamming sub-band of 13 sub-bands that divides the sweep signal in Current Scan moment, TD-SCDMA, and statistics is sent to described second and determines subelement 353;
Described second determines subelement 353, for by disturbing the quantity of the quantity of sub-band and clutter interference sub-band to make comparisons with the first threshold preset, Second Threshold, the 3rd threshold value respectively the quantity of barrage jamming sub-band, TD-SCDMA, determine the type of the interference that the sweep signal in Current Scan moment is subject to
Concrete, described second when determining that subelement 353 determines that the quantity of described barrage jamming sub-band is more than or equal to the first threshold of setting, then determine that the interference that the sweep signal in this Current Scan moment is subject to is barrage jamming.Wherein, described first threshold can be any one positive integer in 8 ~ 9.
Described second when determining that subelement 353 determines that described TD-SCDMA disturbs the quantity of sub-band to be more than or equal to the Second Threshold of setting, then determine that the interference that the sweep signal in this Current Scan moment is subject to is TD-SCDMA interference.Wherein, described Second Threshold is 1.
Described second when determining that subelement 353 determines that the quantity of described clutter interference sub-band is more than or equal to the 3rd threshold value of setting, determines that the interference that the sweep signal in this Current Scan moment is subject to is clutter interference.Wherein, described 3rd threshold value is 1.
Described second when determining that subelement 353 determines that the quantity of other interference sub-bands described is more than or equal to the 4th threshold value of setting, determines that the interference that the sweep signal in this Current Scan moment is subject to is disturbed for other.Wherein, described 4th threshold value is 1.
Preferably, in embodiments of the present invention, sampled point quantity in each sub-band is known, by such scheme which sub-band known be barrage jamming sub-band, which sub-band is that TD-SCDMA disturbs sub-band, which sub-band to be clutter interference sub-band, so just can go out interference sample point accounting by following formulae discovery.
Described interference sample point accounting=power is greater than all sampled points in the quantity/LTE bandwidth of operation of the sampled point of interference threshold value C.
Further, in the LTE system shown in Fig. 3 the recognition device of interference signal basis on, described device also comprises: computing unit (not shown in Fig. 3);
Described computing unit, for calculating the accounting of above-mentioned all kinds of interference.
Concrete, described computing unit goes out interference sample point accounting by following formulae discovery.
Described interference sample point accounting=power is greater than all sampled points in the quantity/LTE bandwidth of operation of the sampled point of interference threshold value C.
Described computing unit also goes out barrage jamming sampled point accounting by following formulae discovery.
All sampled points in described barrage jamming sampled point accounting=barrage jamming sampled point/LTE bandwidth of operation;
Or described barrage jamming sampled point accounting=barrage jamming sampled point/power is greater than the quantity of the sampled point of interference threshold value C.
Wherein, described barrage jamming sampled point is the number of the sampled point in all barrage jamming sub-bands.
Similar with calculating barrage jamming sampled point accounting, described computing unit can also calculate TD-SCDMA interference sample point accounting and clutter interference sampled point accounting, repeats no more here.
It should be noted that, the technical scheme of above-mentioned record, being also applicable to Disturbed Power Systems is TD-SCDMA, and EVAC (Evacuation Network Computer Model) is the situation of LTE; In addition, being also applicable to Disturbed Power Systems is the situations such as GSM or WCDMA.
It will be appreciated by those skilled in the art that the practical function of each processing unit in the recognition device of interference signal in the LTE system shown in Fig. 3 can refer to the associated description of the recognition methods of interference signal in aforementioned LTE system and understands.It will be appreciated by those skilled in the art that the function of each processing unit in the recognition device of interference signal in the LTE system shown in Fig. 3 realizes by the program run on processor, also realize by concrete logical circuit.
The recognition methods of interference signal and device in the LTE system that the embodiment of the present invention provides, the sweep signal with LTE bandwidth of operation is divided at least two sub-bands by the Current Scan moment; The type of the interference that at least two sub-bands described in determining are subject to; According to the type of the interference of described at least two sub-bands, determine the type of the interference that the sweep signal in described Current Scan moment is subject to.The technical scheme of the embodiment of the present invention, carries out the automatic identification of interference type to the sweep signal that scanner exports, and without the need to manual work, saves man power and material and recognition accuracy is high.
The above, be only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.
Claims (12)
1. the recognition methods of interference signal in Long Term Evolution LTE system, it is characterized in that, the sweep signal Current Scan moment with LTE bandwidth of operation is divided at least two sub-bands; Described returning method comprises:
The type of the interference that at least two sub-bands described in determining are subject to;
According to the type of the interference of described at least two sub-bands, determine the type of the interference that the sweep signal in described Current Scan moment is subject to.
2. the recognition methods of interference signal in LTE system according to claim 1, it is characterized in that, the described sweep signal Current Scan moment with LTE bandwidth of operation is divided at least two sub-bands, comprising:
The carrier frequency bandwidth of described sweep signal according to TDS-CDMA system TD-SCDMA is divided, is divided into 13 sub-bands.
3. the recognition methods of interference signal in LTE system according to claim 2, is characterized in that, described determine described in the type of interference that is subject to of at least two sub-bands, comprising:
All sampled points of described sweep signal are assigned in described 13 sub-bands;
Add up sampled point power in described 13 each sub-bands of sub-band and be greater than the sampled point number of default interference threshold value;
Made comparisons with barrage jamming threshold value, TD-SCDMA interference threshold and the clutter interference threshold value preset respectively by the sampled point number being greater than described interference threshold value in each sub-band, and determine the type of the interference that each sub-band is subject to.
4. the recognition methods of interference signal in LTE system according to claim 3, it is characterized in that, the described sampled point number by being greater than described interference threshold value in each sub-band is made comparisons with barrage jamming threshold value, TD-SCDMA interference threshold and the clutter interference threshold value preset respectively, and determine the type of the interference that each sub-band is subject to, comprising:
The type of the described sub-band be interfered comprises: barrage jamming sub-band, TD-SCDMA disturb sub-band, clutter interference sub-band; Described default barrage jamming threshold value comprises: the first barrage jamming threshold value, the second barrage jamming threshold value; Described default clutter interference threshold value comprises: the first clutter interference threshold value, the second clutter interference threshold value;
Accordingly, when current sub-band belongs to front 12 sub-bands in described 13 sub-bands, the sampled point number that the power that described current sub-band has is greater than described interference threshold value be more than or equal to the first barrage jamming threshold value and in described current sub-band inactivity jump sampled point and power bust sampled point time, determine that current sub-band is barrage jamming sub-band; When current sub-band is the 13 sub-band, the sampled point number that the power that described current sub-band has is greater than described interference threshold value be more than or equal to the second barrage jamming threshold value and in described current sub-band inactivity jump sampled point and power bust sampled point time, determine that described current sub-band is barrage jamming sub-band;
When current sub-band belongs to front 12 sub-bands in described 13 sub-bands, the sampled point number that the power that described current sub-band has is greater than described interference threshold value be more than or equal to TD-SCDMA interference threshold and described current sub-band only have power jump sampled point time, determine that this sub-band is that TD-SCDMA disturbs sub-band; Or, when the sampled point number that the power that described current sub-band has is greater than described interference threshold value is more than or equal to TD-SCDMA interference threshold and described current sub-band only has a power bust sampled point, determine that this sub-band is that TD-SCDMA disturbs sub-band; Or, when the sampled point number that the power that described current sub-band has the is greater than described interference threshold value sampled point that is more than or equal to TD-SCDMA interference threshold and the existing power of described current sub-band jumps also has power bust sampled point, determine that this sub-band is that TD-SCDMA disturbs sub-band;
Current sub-band belongs to any one sub-band in 13 sub-bands, and when the sampled point number that the power that described current sub-band has is greater than described interference threshold value is more than or equal to the first clutter interference threshold value and is less than or equal between the second clutter interference threshold value, determine that described current sub-band is clutter interference sub-band; Wherein, described first clutter interference threshold value is less than described second clutter interference threshold value.
5. the recognition methods of interference signal in LTE system according to claim 4, is characterized in that, the type of the interference of at least two sub-bands described in described foundation, determines the type of the interference that the sweep signal in described Current Scan moment is subject to, comprising:
The quantity of sub-band and the quantity of clutter interference sub-band is disturbed to add up to the quantity of the barrage jamming sub-band of 13 sub-bands in Current Scan moment, TD-SCDMA;
By disturbing the quantity of the quantity of sub-band and clutter interference sub-band to make comparisons with the first threshold preset, Second Threshold, the 3rd threshold value respectively the quantity of the barrage jamming counted sub-band, TD-SCDMA, and determine the type of the interference that the sweep signal in Current Scan moment is subject to.
6. the recognition methods of interference signal in LTE system according to claim 5, it is characterized in that, described by disturbing the quantity of the quantity of sub-band and clutter interference sub-band to make comparisons with the first threshold preset, Second Threshold, the 3rd threshold value respectively the quantity of the barrage jamming sub-band counted, TD-SCDMA, and determine the type of the interference that the sweep signal in Current Scan moment is subject to, comprising:
Add up the quantity of barrage jamming sub-band in Current Scan moment 13 sub-bands, TD-SCDMA disturbs the quantity of sub-band and the quantity of clutter interference sub-band;
When the quantity of described barrage jamming sub-band is more than or equal to the first threshold of setting, determine that the interference that the sweep signal in described Current Scan moment is subject to is barrage jamming;
When described TD-SCDMA disturbs the quantity of sub-band to be more than or equal to the Second Threshold of setting, determine that the interference that the sweep signal in described Current Scan moment is subject to is TD-SCDMA interference;
When the quantity of described clutter interference sub-band is more than or equal to the 3rd threshold value of setting, determine that the interference that the sweep signal in described Current Scan moment is subject to is clutter interference.
7. the recognition device of interference signal in Long Term Evolution LTE system, it is characterized in that, described device comprises: division unit, the first determining unit and the second determining unit; Wherein,
Described division unit, is divided at least two sub-bands for the sweep signal Current Scan moment with LTE bandwidth of operation;
Described first determining unit, for the type of the interference that at least two sub-bands described in determining are subject to;
Described second determining unit, for the type of the interference according to described at least two sub-bands, determines the type of the interference that the sweep signal in described Current Scan moment is subject to.
8. the recognition device of interference signal in LTE system according to claim 7, it is characterized in that, described division unit, also for the carrier frequency bandwidth of described sweep signal according to TDS-CDMA system TD-SCDMA being divided, is divided into 13 sub-bands.
9. the recognition device of interference signal in LTE system according to claim 8, it is characterized in that, described first determining unit comprises: distribute subelement, subelement determined by statistics subelement and first;
Wherein,
Described distribution subelement, for being assigned in described 13 sub-bands by all sampled points of described sweep signal;
Described statistics subelement, is greater than the sampled point number of default interference threshold value for adding up in described 13 sub-bands sampled point power in each sub-band;
Described first determines subelement, making comparisons with barrage jamming threshold value, TD-SCDMA interference threshold and the clutter interference threshold value preset respectively for the sampled point number by being greater than interference threshold value in each sub-band, determining the type of the interference that each sub-band is subject to.
10. the recognition device of interference signal in LTE system according to claim 9, it is characterized in that, described first determines subelement, also for:
Determine that current sub-band belongs to front 12 sub-bands in described 13 sub-bands, the sampled point number that the power that described current sub-band has is greater than described interference threshold value be more than or equal to the first barrage jamming threshold value and in described current sub-band inactivity jump sampled point and power bust sampled point time, determine that current sub-band is barrage jamming sub-band; When current sub-band is the 13 sub-band, the sampled point number that the power that described current sub-band has is greater than described interference threshold value be more than or equal to the second barrage jamming threshold value and in described current sub-band inactivity jump sampled point and power bust sampled point time, determine that described current sub-band is barrage jamming sub-band;
Determine that current sub-band belongs to front 12 sub-bands in described 13 sub-bands, the sampled point number that the power that described current sub-band has is greater than described interference threshold value be more than or equal to TD-SCDMA interference threshold and described current sub-band only have power jump sampled point time, determine that this sub-band is that TD-SCDMA disturbs sub-band; Or, when the sampled point number that the power that described current sub-band has is greater than described interference threshold value is more than or equal to TD-SCDMA interference threshold and described current sub-band only has a power bust sampled point, determine that this sub-band is that TD-SCDMA disturbs sub-band; Or, when the sampled point number that the power that described current sub-band has the is greater than described interference threshold value sampled point that is more than or equal to TD-SCDMA interference threshold and the existing power of described current sub-band jumps also has power bust sampled point, determine that this sub-band is that TD-SCDMA disturbs sub-band;
Determine that current sub-band belongs to any one sub-band in 13 sub-bands, when the sampled point number that the power that described current sub-band has is greater than described interference threshold value is more than or equal to the first clutter interference threshold value and is less than or equal between the second clutter interference threshold value, determine that described current sub-band is clutter interference sub-band; Wherein, the type of the sub-band be interfered described in comprises: barrage jamming sub-band, TD-SCDMA disturb sub-band, clutter interference sub-band; Described default barrage jamming threshold value comprises: the first barrage jamming threshold value, the second barrage jamming threshold value; Described default clutter interference threshold value comprises: the first clutter interference threshold value, the second clutter interference threshold value; Described first clutter interference threshold value is less than described second clutter interference threshold value.
In 11. LTE system according to claim 10, the recognition device of interference signal, is characterized in that, described second determining unit comprises: subelement determined by statistics subelement and second; Wherein,
Described statistics subelement, disturb the quantity of sub-band and the quantity of clutter interference sub-band to add up for the quantity of the barrage jamming sub-band of 13 sub-bands to the Current Scan moment, TD-SCDMA, and statistics is sent to described second and determines subelement;
Described second determines subelement, for by disturbing the quantity of the quantity of sub-band and clutter interference sub-band to make comparisons with the first threshold preset, Second Threshold, the 3rd threshold value respectively the quantity of barrage jamming sub-band, TD-SCDMA, determine the type of the interference that the sweep signal in Current Scan moment is subject to.
In 12. LTE system according to claim 11, the recognition device of interference signal, is characterized in that, described second determining unit, also for:
When determining that the quantity of described barrage jamming sub-band is more than or equal to the first threshold of setting, determine that the interference that the sweep signal in this Current Scan moment is subject to is barrage jamming;
When determining that described TD-SCDMA disturbs the quantity of sub-band to be more than or equal to the Second Threshold of setting, determine that the interference that the sweep signal in this Current Scan moment is subject to is TD-SCDMA interference;
When determining that the quantity of described clutter interference sub-band is more than or equal to the 3rd threshold value of setting, determine that the interference that the sweep signal in this Current Scan moment is subject to is clutter interference.
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