CN103686793A - Method and device for determining an interference source - Google Patents

Abstract

The invention discloses a method and a device for determining an interference source, which are used for determining interference sources of other systems more conveniently and more exactly. The method for determining the interference source provided by the invention comprises the steps of: determining an interference template matrix used for showing a predict interference condition from each interference source to each PRB (Physic Resource Block) on a working band of the system based on engineering parameters of the interference sources of the other systems; continuously detecting an upstream interference value from each interference source to each PRB on the working band of the system and determining an interference source matrix used for showing the practical interference condition from each interference source to each PRB on the working band of the system; determining an interference source needing interference removal through performing correlation calculation on the interference template matrix and the interference source matrix.

Description

A kind of interference source is determined method and device

Technical field

The present invention relates to communication technical field, relate in particular to a kind of interference source and determine method and device.

Background technology

At third generation collaborative project (3rd Generation Partnership Project, in 36.104 standards 3GPP), describe, time-division Long Term Evolution (Time Division Long Term Evolution, TD-LTE) can service band (Band) 35 frequency bands (1850-1910MHz) or Band39 frequency band (1880-1920MHz) carry out networking.But, because the frequency band that TDD-LTE takies is very wide, may be subject to the interference of other wireless access technology, mainly comprise: global mobile communication (Global System for Mobile communication, GSM) second harmonic of system 900 and second order inter-modulation are disturbed, digital communication system (Digital Communication System, DCS) 1800 third order intermodulation is disturbed, TD SDMA access (Time Division Synchronized Code Division Multiple Access, TD-SCDMA) co-channel interference, DCS1800 or hand-phone system (Personal Handy phone System, PHS) barrage jamming, the clutter interference of other system.Therefore, need location interference source, only have and located interference source, just can process accordingly.

Existing interference arrange distinguish method comprises: the TD-LTE community within the scope of deexcitation TD-LTE to be tested community and periphery 1-2 circle, eliminate the impact of TD-LTE signal on interference signal as far as possible; At TD-LTE antenna place, frequency spectrograph is connected on the antenna port of TD-LTE community, observe frequency-region signal, detect frequency band and the amplitude of interference signal, and detect the temporal signatures of relevant frequency, judgement is disturbed and is derived from which kind of wireless access technology; According to the engineering parameter (follow-up referred to as engineering parameter) of relevant wireless access technology, possible source is disturbed in judgement; Close the relevant community that may produce interference, whether judgement interference disappears, thereby confirms to disturb source.

But current interference arrange distinguish method has following shortcoming:

When investigation is disturbed, need closed portion TD-LTE base station, can be on affecting user's access and network capacity;

Need to arrive antenna place and test, operating efficiency is not high, and the installation site of some antenna is not easy to work high above the ground;

Some interference is not frequent existence, even if upper station investigation also has the possibility of omission.

Summary of the invention

The embodiment of the present invention provides a kind of interference source to determine method and device, in order to interference source more convenient, that determine exactly different system.

A kind of interference source that the embodiment of the present invention provides is determined method, comprising:

According to the interference source engineering parameter of different system, be identified for representing the interference pattern matrix of each interference source to the expectation disturbed condition of each the Physical Resource Block PRB on the working band of native system;

The uplink interference value of each interference source of continuous detecting to each PRB on the working band of native system, is identified for representing the interference source matrix of each interference source to the actual interference situation of each PRB on the working band of native system;

By described interference pattern matrix and described interference source matrix are carried out to correlation calculations, determine and need to eliminate the interference source disturbing.

The method is without detecting interference source to base station end, more comprehensive to the detection of interference source, even if accidental interference also can detect, and without special-purpose instrument, only by base stations and backstage analysis software, can realize Interference Detection.

Preferably, according to the interference source engineering parameter of different system, be identified for representing the interference pattern matrix of each interference source to the expectation disturbed condition of each the Physical Resource Block PRB on the working band of native system, comprise:

Determine the different system cell in preset range;

For each different system cell, when determining that native system is disturbed in this different system cell, using this different system cell as interference source and judge whether this interference source has interference to each PRB on the working band of native system, using judged result corresponding to this interference source as the row element that disturbs pattern matrix, the judged result that wherein each PRB is corresponding is as the column element that disturbs pattern matrix.

Preferably, the uplink interference value of each interference source of continuous detecting to each PRB on the working band of native system, is identified for representing the interference source matrix of each interference source to the actual interference situation of each PRB on the working band of native system, comprising:

For each interference source, determine its uplink interference value IOT to each PRB on the working band of native system, IOT and predetermined threshold value that each PRB is corresponding compare, according to comparative result, determine the interference source matrix column element that this PRB is corresponding, the row element using element corresponding to the corresponding all PRB of this interference source as interference source matrix.

Preferably, by described interference pattern matrix and described interference source matrix are carried out to correlation calculations, determine and need to eliminate the interference source disturbing, comprising:

Utilize Pi Shi product moment correlation coefficient method, described interference pattern matrix and described interference source matrix are carried out to correlation calculations, obtain correlation matrix;

With the unit of classifying as of correlation matrix, calculate Num _i, Num wherein _iequal | Cor _{i * j}| > Cor _tkquantity, wherein, Cor _{i * j}for the element in correlation matrix, Cor _tkcorrelation thresholding for default, obtains matrix N UM _k=(Num _l... Num _i... Num _k) ^t, by the Num of numerical value maximum _ithe corresponding interference source of row at place is eliminated the interference source disturbing as needs.

A kind of interference source determining device that the embodiment of the present invention provides, comprising:

Disturb pattern matrix determining unit, for according to the interference source engineering parameter of different system, be identified for representing the interference pattern matrix of each interference source to the expectation disturbed condition of each the Physical Resource Block PRB on the working band of native system;

Interference source matrix determining unit, for the uplink interference value of each interference source of continuous detecting to each PRB on the working band of native system, be identified for representing the interference source matrix of each interference source to the actual interference situation of each PRB on the working band of native system;

Dependency analysis unit, for by described interference pattern matrix and described interference source matrix are carried out to correlation calculations, determines and needs to eliminate the interference source disturbing.

Preferably, disturb pattern matrix determining unit, specifically for:

Determine the different system cell in preset range;

For each different system cell, when determining that native system is disturbed in this different system cell, using this different system cell as interference source and judge whether this interference source has interference to each PRB on the working band of native system, using judged result corresponding to this interference source as the row element that disturbs pattern matrix, the judged result that wherein each PRB is corresponding is as the column element that disturbs pattern matrix.

Preferably, interference source matrix determining unit, specifically for:

For each interference source, determine its uplink interference value IOT to each PRB on the working band of native system, IOT and predetermined threshold value that each PRB is corresponding compare, according to comparative result, determine the interference source matrix column element that this PRB is corresponding, the row element using element corresponding to the corresponding all PRB of this interference source as interference source matrix.

Preferably, dependency analysis unit, specifically for:

Utilize Pi Shi product moment correlation coefficient method, described interference pattern matrix and described interference source matrix are carried out to correlation calculations, obtain correlation matrix;

With the unit of classifying as of correlation matrix, calculate Num _inum wherein _iequal Cor * j| > Cor _tkpang quantity, wherein, Cor _{i * j}for the element in correlation matrix, Cor _tkcorrelation thresholding for default, obtains matrix N UM _k=(Num _l..Num _i... Num _k) ^tby the Num of numerical value maximum _ithe corresponding interference source of row that flies place is eliminated the interference source disturbing as needs.

Preferably, described different system comprises:

Global mobile communication GSM900 system, digital communication system DCS1800, TD SDMA access TD-SCDMA system and/or hand-phone system PHS.

Accompanying drawing explanation

The interference detection method schematic flow sheet to TD-SCDMA system that Fig. 1 provides for the embodiment of the present invention;

The interference detection method schematic flow sheet to GSM900 system that Fig. 2 provides for the embodiment of the present invention;

The interference detection method schematic flow sheet to DCS1800 system that Fig. 3 provides for the embodiment of the present invention;

A kind of interference source that Fig. 4 provides for the embodiment of the present invention is determined the schematic flow sheet of method;

The structural representation of a kind of interference source determining device that Fig. 5 provides for the embodiment of the present invention.

Embodiment

The embodiment of the present invention provides a kind of interference source to determine method and device, in order to interference source more convenient, that determine exactly different system.

The technical scheme of the embodiment of the present invention is mainly comprised of three parts: one, according to different system engineering parameter, form and disturb pattern matrix; Two, by the continuous interferometry in TD-LTE base station, obtain interference source matrix; Three, the interference source matrix collecting is carried out to correlation analysis with disturbing pattern matrix, confirms to disturb source and influence degree, for follow-up weaken or eliminate interference effect data supporting is provided.

One, form and disturb pattern matrix:

Operation principle:

Take certain fixed base stations as example, its external disturbance is to have some intrinsic features, according to these features, can analyze the source of interference, these features comprise: 1) TD-LTE base station is fixed, and contiguous different system interference source (GSM900, DCS1800, TD-SCDMA and PHS) is also fixed substantially.2), according to the engineering parameter of different system, can analyze and likely produce the base station of disturbing.3) in different system, some interference signal is long-standing, and for example the control carrier wave of the bcch carrier of GSM and PHS, just has interference when some carrier wave only has generation business.

First, by the engineering parameter of TD-SCDMA, the engineering parameter of the engineering parameter of GSM900, DCS1800, the engineering parameter of PHS, obtains GPS latitude and longitude information, the information such as indoor coverage cell, working frequency points whether; Then, according to second harmonic combination, third order intermodulation combination etc., calculate the signal that may cause interference; Finally, each base station is formed and disturbs template, for detected interference contrasts with reality.

Different interference sources will be considered different disturbing factors, and specific requirement sees table.

For GSM900 community, the interference of its generation may be the second harmonic (2*F1) of certain frequency, also may be the second order inter-modulation (F1+F2) of wherein certain two frequency, if possible drop into the working band of TD-LTE network, just think it may is interference source, it affects bandwidth is each 200KHz of center frequency point left and right, wherein F1 and F2 represent respectively to represent respectively the corresponding working frequency points of different passages in GSM900 community, Yi Ge community generally has 2 to 10 working frequency points, and the F1 here and F2 refer to the wherein combination of any two working frequency points.

For DCS1800 community, the interference of its generation may be third order intermodulation (2*F1-F2,2*F2-F1,2*F1+F2,2*F2+F1), wherein, only have 2*F1-F2 and 2*F2-F1 may drop into the working band of TD-LTE network, if fallen into, just think it may is to disturb, it affects bandwidth is each 200KHz of center frequency point left and right, wherein F1 and F2 represent respectively to represent respectively the corresponding working frequency points of different passages in DCS1800 community, and Yi Ge community generally has 2 to 10 working frequency points, and the F1 here and F2 refer to the wherein combination of any two working frequency points.

For PHS community, the interference of its generation is mainly barrage jamming, if when PHS base station distance TD-LTE base station distance is very near, just may cause the receiver Whole frequency band of TD-LTE base station to occur blocking, and it affects bandwidth is whole frequency band.

For TD-SCDMA community, the interference of its generation is mainly co-channel interference, overlapping if the working band of the partial carrier wave of TD-SCDMA and TD-LTE has, and also can produce co-channel interference, and it affects bandwidth is each 800KHz of center frequency point left and right.

By engineering parameter, can also analyze the feature of interference: disturb and continue to occur or occur once in a while.Under specific descriptions are shown in:

The Broadcast Control Channel of GSM900 (Broadcast Control Channel, BCCH) carrier wave is to continue to occur, and associated second harmonic is to continue to occur; Other second order inter-modulations or second harmonic are all sporadic.

The interference that DCS1800 causes is all sporadic.

The interference of PHS is to continue to occur.

The main carrier of TD-SCDMA is to continue to occur, and auxiliary carrier wave is sporadic.

Generate and disturb the step of pattern matrix to comprise: determine the different system cell in preset range; For each different system cell, when determining that native system is disturbed in this different system cell, using this different system cell as interference source and judge whether this interference source has interference to each PRB on the working band of native system, using judged result corresponding to this interference source as the row element that disturbs pattern matrix, the judged result that wherein each PRB is corresponding is as the column element that disturbs pattern matrix.

Wherein, about determining the different system cell of disturbing native system, comprise: the IOT value of each PRB of affiliated subdistrict can be measured in native system base station, and set in advance a thresholding, this thresholding can configure, this thresholding of default setting is 10, when the IOT measuring exceeds this thresholding, just thinks and has different system cell.

For the different system of difference, generate and disturb the idiographic flow of the element in pattern matrix to be described below respectively so:

For each the PHS base station in preset range:

If the distance of PHS base station and TD-LTE base station to be analyzed is less than preset range L _{pHS_TH}time, just by the working band [F of TD-LTE system _l, F _h] be all set to disturb, being about to this PHS base station as interference source, the full set 1 of the row element of the interference pattern matrix that this interference source is corresponding, represents the working band [F of this PHS base station to TD-LTE system _l, F _h] on each PRB all caused interference.Wherein, according to free space propagation model, L _{pHS_TH}span be generally no more than 1000 meters, actually can get 500 meters of left and right, this value can be configured according to actual needs.

Wherein, TD-LTE system is as native system, i.e. disturbed system.

For each the TD-SCDMA base station in preset range:

The interference of TD-SCDMA is mainly co-channel interference, referring to Fig. 1, is mainly the interference that the working frequency points of the TD-SCDMA of judgement in preset range may cause TD-LTE system, specifically comprises step:

101, set in advance distance threshold L _{tDS_TH}, i.e. preset range; And the working band [F that sets in advance TD-LTE system _l, F _h].

102, the engineering parameter that reads TD-LTE base station to be analyzed, obtains GPS longitude and latitude (lO, lA).

103, read the engineering parameter of TD-SCDMA community, comprise GPS longitude and latitude (lo, la), whether be indoor distribution and all n working frequency points (F ₁... F _n) etc. information.

104, by the site spacing of GPS calculation of longitude & latitude TD-SCDMA base station and TD-LTE base station, and judge whether this distance is greater than thresholding L _{tDS_TH}if so, process ends, otherwise, execution step 105.

105, judge TD-SCDMA base station be whether indoor distribution website if, process ends, otherwise, execution step 106.

Above step 101, to step 105, is determined the different system cell of disturbing native system, be mainly the distance between judgement TD-SCDMA base station and TD-LTE base station, and whether TD-SCDMA base station is indoor distribution base station.

106, judgement F _l<=F _x<=F _hif so, perform step 107, otherwise, process ends.

Wherein, 1<=x<=n; F _xthe working frequency points that represents TD-SCDMA community.

This step mainly judges is whether the working frequency points of TD-SCDMA base station drops in the working band of TD-LTE base station.

107, recording frequency band [F _x-0.8, F _x+0.8] be interference band, and mark this frequency band for " occurring once in a while ".

Because the working band of TD-SCDMA system is 1.6MHz, respectively there is 800Khz center frequency point left and right.If not dominant frequency point, only otherwise bearer service, this frequency just can not produce and disturb TD-LTE system this frequency so.

108, judgement F _xit is dominant frequency point? if so, perform step 109, otherwise, process ends.

109, mark [F _x-0.8, F _x+ 0.8] frequency band is " continuing to occur ".

Dominant frequency point can carry the channels such as BCH, can continue transmitted signal, and the interference of TD-LTE system is also continued.

Above step 106 is to step 109, for each different system cell, when determining that native system is disturbed in this different system cell, using this different system cell as interference source and judge whether this interference source has interference to each PRB on the working band of native system, using judged result corresponding to this interference source as the row element that disturbs pattern matrix, the judged result that wherein each PRB is corresponding is as the column element that disturbs pattern matrix.Mainly comprise: the working frequency points of judgement TD-SCDMA community, then each 800KHz of left and right is exactly its bandwidth of operation, if this 1.6MHz drops in the working band of TD-LTE, will produce interference, and the PRB position of interference is also fixed.If this working frequency points is the dominant frequency point of TD-SCDMA community, on this frequency, just have lasting signal and send, disturb and continue so, otherwise be exactly sporadic.

For each the GSM900 base station in preset range:

The interference of GSM900 is mainly that second harmonic and second order inter-modulation are disturbed, and referring to Fig. 2, is mainly the interference that the working frequency points of the GSM900 in judgement preset range may cause TD-LTE system, specifically comprises step:

201, set in advance distance threshold L _{tDS_TH}, i.e. preset range; And the working band [F that sets in advance TD-LTE system _l, F _h].

202, the engineering parameter that reads TD-LTE base station to be analyzed, obtains GPS longitude and latitude (lO, lA).

203, read the engineering parameter of GSM900 community, comprise GPS longitude and latitude (lo, la), whether be indoor distribution and all n working frequency points (F ₁... F _n) etc. information.

204, by the site spacing of GPS calculation of longitude & latitude GSM900 base station and TD-LTE base station, and judge whether this distance is greater than thresholding L _{tDS_TH}if so, process ends, otherwise, execution step 205.

205, judge GSM900 base station be whether indoor distribution website if, process ends, otherwise, execution step 206.

206, judgement F _l<=F _x+ F _y<=F _hif so, perform step 207, otherwise, process ends.

What this step mainly judged is whether second order intermodulation product can drop in the working frequency range of TD-LTE base station.

Wherein, 1<=x<=n, 1<=y<=n; F _xand F _ythe working frequency points that represents GSM900 community.

207, recording frequency band [F _x+ F _y-0.2, F _x+ F _y+ 0.2] be interference band, and mark this frequency band for " occurring once in a while ".

Because in GSM900 and DCS1800 system, the bandwidth of operation of each passage is 200KHz, during two passage intermodulation, interference signal meeting broadening is to 400Khz.

Does is 208, judgement FX dominant frequency point? if so, perform step 209, otherwise, process ends.

209, mark [2*F _x-0.2,2*F _x+ 0.2] frequency band is " continuing to occur ".

First, in step 208, GSM900 system does not have the saying of dominant frequency point, but BCCH channel.This frequency is carrying broadcast singal, therefore disturbs and may continue.

For each the DCS1800 base station in preset range:

The interference of DCS1800 is mainly the interference of third-order intermodulation product, referring to Fig. 3, is mainly the interference that the working frequency points of the DCS1800 of judgement within the scope of certain distance may cause TD-LTE system, specifically comprises step:

301, set in advance distance threshold LTDS_TH, i.e. preset range; And the working band [F that sets in advance TD-LTE system _l, F _h].

302, the engineering parameter that reads TD-LTE base station to be analyzed, obtains GPS longitude and latitude (lO, lA).

303, read the engineering parameter of DCS1800 community, comprise GPS longitude and latitude (lo, la), whether be indoor distribution and all n working frequency points (F ₁... F _n) etc. information.

304, by the site spacing of GPS calculation of longitude & latitude DCS1800 base station and TD-LTE base station, and judge whether this distance is greater than thresholding L _{tDS_TH}if so, process ends, otherwise, execution step 305.

305, judge DCS1800 base station be whether indoor distribution website if, process ends, otherwise, execution step 306.

306, judgement F _l<=2*F _x-F _y<=F _hif so, perform step 307, otherwise, process ends.

Wherein, 1<=x<=n, 1<=y<=n; F _xand F _ythe working frequency points that represents DCS1800 community.

307, recording frequency band [2*F _x-F _y-0.2,2*F _x-F _y+ 0.2] be interference band, and mark this frequency band for " occurring once in a while ".

Based on above-mentioned processing, can form and disturb pattern matrix M _{k * 100}, comprising information: the scope of interference and interference are accidental or continue.Wherein, k is for estimating TD-LTE system to cause the quantity of community of the different system of interference, M _{k * 100}and the matrix of capable 100 row of k, the number of the corresponding interference source of k, 100 correspondences be the number of the PRB on the working band of TD-LTE system.

Two, read continuously uplink interference, obtain interference source matrix.

TD-LTE system base-station is for each interference source, determine its uplink interference value IOT to each PRB on the working band of native system, IOT and predetermined threshold value that each PRB is corresponding compare, according to comparative result, determine the interference source matrix column element that this PRB is corresponding, the row element using element corresponding to the corresponding all PRB of this interference source as interference source matrix.Particularly:

TD-LTE system base-station reads uplink interference value (Interference over Thermal noise, IOT).Generally; base station can be with 180KHz (Physical Resource Block; PRB) be the interference value IOT on its frequency band of unit continuous detecting; the 20MHz bandwidth of operation of 1880MHz～1900MHz of take is example; remove the boundary belt of each 1MHz of band edge; interference value on 100 PRB of base station meeting continuous detecting working band 1881MHz～1899MHz; this numerical value is the relative value that the thermal noise of take-117dBm is benchmark (value is 0); step-length is 1dB; this value is higher, and the interference being superimposed upon on thermal noise is just larger.

Read continuously repeatedly the value of IOT and preserve, and these values are processed, the basic premise of processing is: each interference source is independently, and the frequency band of its interference does not always occur simultaneously.Certain numerical value IOT is set _thfor disturbing, there is thresholding, higher than this value, just think interference has occurred.Wherein, IOT _ththe scope of value is generally 0～60, and wherein 0 correspondence is the thermal noise of 180kHz.Thermal noise in the shared bandwidth of channel, N0=thermal noise density+10 * log (B)+noise factor.B is the bandwidth taking.For 180Khz bandwidth, numerical value 0 expression is disturbed and is-117dBm, and numerical value 1 represents that interference is-116dBm, the like.IOT _thgenerally can get 10.

Concrete operation method is as follows: if IOT<IOT _th, be just labeled as 0; If IOT _th<=IOT<2*IOT _th, be just labeled as 1; In the data that likely collect, there are a plurality of interference source stacks, if different interference is distinguished according to amplitude, can make correlation analysis below more accurate, reduce the possibility of erroneous judgement, therefore, if 2*IOT _th<=IOT<3*IOT _th, be just labeled as 2; By that analogy, obtain IOT matrix, i.e. interference source matrix.

Three, the correlation analysis of interference source and interference template.

Utilize Pi Shi product moment correlation coefficient method, for interference source matrix, carry out correlation analysis with disturbing pattern matrix, obtain coefficient correlation, computing formula is:

$\mathrm{Cor}(X,Y)=\frac{\mathrm{\&Sigma;}(x-\stackrel{\&OverBar;}{x})(y-\stackrel{\&OverBar;}{y})}{\sqrt{\mathrm{\&Sigma;}{(x-\stackrel{\&OverBar;}{x})}^2\mathrm{\&Sigma;}{(y-\stackrel{\&OverBar;}{y})}^2}}$ ... formula one

Wherein

the sample mean of interference source matrix,

the mean value that disturbs the sample of pattern matrix.

For example, disturb pattern matrix to be:

$M_{k\&times;100}=\left(\begin{array}{ccc}{m}_{1\&times;1}& \&CenterDot;\&CenterDot;\&CenterDot;& m_{1\&times;100}\\ \&CenterDot;& \&CenterDot;& \&CenterDot;\\ \&CenterDot;& \&CenterDot;& \&CenterDot;\\ \&CenterDot;& \&CenterDot;& \&CenterDot;\\ m_{k\&times;1}& \&CenterDot;\&CenterDot;\&CenterDot;& m_{k\&times;100}\end{array}\right),$

Actual measurement n group IOT value, obtain interference source matrix:

${\mathrm{TOT}}_{n\&times;100}=\left(\begin{array}{ccc}{\mathrm{Iot}}_{1\&times;1}& \&CenterDot;\&CenterDot;\&CenterDot;& {\mathrm{Iot}}_{1\&times;100}\\ \&CenterDot;& \&CenterDot;& \&CenterDot;\\ \&CenterDot;& \&CenterDot;& \&CenterDot;\\ \&CenterDot;& \&CenterDot;& \&CenterDot;\\ {\mathrm{Iot}}_{n\&times;1}& \&CenterDot;\&CenterDot;\&CenterDot;& {\mathrm{Iot}}_{n\&times;100}\end{array}\right),$

According to a pair of interference pattern matrix of above-mentioned formula and interference source matrix, carry out correlation calculations, calculate correlation matrix and be:

${\mathrm{COR}}_{k\&times;n}=\left(\begin{array}{ccc}\left|{\mathrm{Cor}}_{1\&times;1}\right|& \&CenterDot;\&CenterDot;\&CenterDot;& \left|{\mathrm{Cor}}_{1\&times;n}\right|\\ \&CenterDot;& \&CenterDot;& \&CenterDot;\\ \&CenterDot;& \&CenterDot;& \&CenterDot;\\ \&CenterDot;& \&CenterDot;& \&CenterDot;\\ \left|{\mathrm{Cor}}_{k\&times;1}\right|& \&CenterDot;\&CenterDot;\&CenterDot;& \left|{\mathrm{Cor}}_{k\&times;n}\right|\end{array}\right),$

Wherein, Cor in matrix _{i * j}the span of value be [0,1], correlation thresholding Cor is set _th, with the unit of classifying as of correlation matrix, calculate Num _i, Num _iequal | Co _{i * j}| > Cor _tkquantity, that is to say Num _irefer to that i interference source produced Num to TD-LTE system _iinferior clear and definite interference, the interference of all k possible interference source generations has just obtained matrix N UM _k=(Num _l... Num _i... Num _k) ^tnuM wherein _ithe corresponding interference source of row of numerical value maximum is exactly the interference source to TD-LTE web influence maximum, can to these interference sources, disturb elimination targetedly.

Disturb the method for eliminating can adopt prior art, for example: close base station or the correlated carrier wave that may produce interference; Or the frequency that may produce interference carries out shift frequency operation; Or, increase engineering isolation, reduce contiguous or with the issuable interference in base station, location etc. as far as possible.

To sum up, referring to Fig. 4, a kind of interference source that the embodiment of the present invention provides determines that method comprises step:

401,, according to the interference source engineering parameter of different system, be identified for representing the interference pattern matrix of each interference source to the expectation disturbed condition of each the Physical Resource Block PRB on the working band of native system;

402, the uplink interference value of each interference source of continuous detecting to each PRB on the working band of native system, is identified for representing the interference source matrix of each interference source to the actual interference situation of each PRB on the working band of native system;

403,, by described interference pattern matrix and described interference source matrix are carried out to correlation calculations, determine and need to eliminate the interference source disturbing.

Correspondingly, referring to Fig. 5, a kind of interference source determining device that the embodiment of the present invention provides comprises

Disturb pattern matrix determining unit 501, for according to the interference source engineering parameter of different system, be identified for representing the interference pattern matrix of each interference source to the expectation disturbed condition of each the Physical Resource Block PRB on the working band of native system;

Interference source matrix determining unit 502, for the uplink interference value of each interference source of continuous detecting to each PRB on the working band of native system, be identified for representing the interference source matrix of each interference source to the actual interference situation of each PRB on the working band of native system;

Dependency analysis unit 503, for by described interference pattern matrix and described interference source matrix are carried out to correlation calculations, determines and needs to eliminate the interference source disturbing.

Preferably, this interference source determining device can be base station.Disturbing pattern matrix determining unit 501, interference source matrix determining unit 502 and dependency analysis unit 503 can be to be realized by processor.

Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt complete hardware implementation example, implement software example or in conjunction with the form of the embodiment of software and hardware aspect completely.And the present invention can adopt the form that wherein includes the upper computer program of implementing of computer-usable storage medium (including but not limited to magnetic disc store and optical memory etc.) of computer usable program code one or more.

The present invention is with reference to describing according to flow chart and/or the block diagram of the method for the embodiment of the present invention, equipment (system) and computer program.Should understand can be in computer program instructions realization flow figure and/or block diagram each flow process and/or the flow process in square frame and flow chart and/or block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, the instruction of carrying out by the processor of computer or other programmable data processing device is produced for realizing the device in the function of flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame appointments.

These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, the instruction that makes to be stored in this computer-readable memory produces the manufacture that comprises command device, and this command device is realized the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.

These computer program instructions also can be loaded in computer or other programmable data processing device, make to carry out sequence of operations step to produce computer implemented processing on computer or other programmable devices, thereby the instruction of carrying out is provided for realizing the step of the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame on computer or other programmable devices.

Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.

Claims (10)

1. interference source is determined a method, it is characterized in that, the method comprises:

According to the interference source engineering parameter of different system, be identified for representing the interference pattern matrix of each interference source to the expectation disturbed condition of each the Physical Resource Block PRB on the working band of native system;

The uplink interference value of each interference source of continuous detecting to each PRB on the working band of native system, is identified for representing the interference source matrix of each interference source to the actual interference situation of each PRB on the working band of native system;

By described interference pattern matrix and described interference source matrix are carried out to correlation calculations, determine and need to eliminate the interference source disturbing.

2. method according to claim 1, it is characterized in that, according to the interference source engineering parameter of different system, be identified for representing the interference pattern matrix of each interference source to the expectation disturbed condition of each the Physical Resource Block PRB on the working band of native system, comprising:

Determine the different system cell in preset range;

For each different system cell, when determining that native system is disturbed in this different system cell, using this different system cell as interference source and judge whether this interference source has interference to each PRB on the working band of native system, using judged result corresponding to this interference source as the row element that disturbs pattern matrix, the judged result that wherein each PRB is corresponding is as the column element that disturbs pattern matrix.

3. method according to claim 2, it is characterized in that, the uplink interference value of each interference source of continuous detecting to each PRB on the working band of native system, be identified for representing the interference source matrix of each interference source to the actual interference situation of each PRB on the working band of native system, comprise:

For each interference source, determine its uplink interference value IOT to each PRB on the working band of native system, IOT and predetermined threshold value that each PRB is corresponding compare, according to comparative result, determine the interference source matrix column element that this PRB is corresponding, the row element using element corresponding to the corresponding all PRB of this interference source as interference source matrix.

4. method according to claim 3, is characterized in that, by described interference pattern matrix and described interference source matrix are carried out to correlation calculations, determines and needs to eliminate the interference source disturbing, and comprising:

Utilize Pi Shi product moment correlation coefficient method, described interference pattern matrix and described interference source matrix are carried out to correlation calculations, obtain correlation matrix;

With the unit of classifying as of correlation matrix, calculate Num _i, Num wherein _iequal Cor _{i * j}> Cor _thquantity, wherein, Cor _{i * j}for the element in correlation matrix, Cor _tHcorrelation thresholding for default, obtains matrix N UM _k=(Num ₁... Num _i... Num _k) ^tby the Num of numerical value maximum _ithe corresponding interference source of row at place is eliminated the interference source disturbing as needs.

5. according to the method described in the arbitrary claim of claim 1-4, it is characterized in that, described different system comprises:

Global mobile communication GSM900 system, digital communication system DCS1800, TD SDMA access TD-SCDMA system and/or hand-phone system PHS.

6. an interference source determining device, is characterized in that, this device comprises:

Disturb pattern matrix determining unit, for according to the interference source engineering parameter of different system, be identified for representing the interference pattern matrix of each interference source to the expectation disturbed condition of each the Physical Resource Block PRB on the working band of native system;

Interference source matrix determining unit, for the uplink interference value of each interference source of continuous detecting to each PRB on the working band of native system, be identified for representing the interference source matrix of each interference source to the actual interference situation of each PRB on the working band of native system;

Dependency analysis unit, for by described interference pattern matrix and described interference source matrix are carried out to correlation calculations, determines and needs to eliminate the interference source disturbing.

7. device according to claim 6, is characterized in that, disturbs pattern matrix determining unit, specifically for:

Determine the different system cell in preset range;

For each different system cell, when determining that native system is disturbed in this different system cell, using this different system cell as interference source and judge whether this interference source has interference to each PRB on the working band of native system, using judged result corresponding to this interference source as the row element that disturbs pattern matrix, the judged result that wherein each PRB is corresponding is as the column element that disturbs pattern matrix.

8. device according to claim 7, is characterized in that, interference source matrix determining unit, specifically for:

For each interference source, determine its uplink interference value IOT to each PRB on the working band of native system, IOT and predetermined threshold value that each PRB is corresponding compare, according to comparative result, determine the interference source matrix column element that this PRB is corresponding, the row element using element corresponding to the corresponding all PRB of this interference source as interference source matrix.

9. device according to claim 8, is characterized in that, dependency analysis unit, specifically for:

Utilize Pi Shi product moment correlation coefficient method, described interference pattern matrix and described interference source matrix are carried out to correlation calculations, obtain correlation matrix;

With the unit of classifying as of correlation matrix, calculate Num _i, Num wherein _iequal Cor _{i * j}> Cor _tkquantity, wherein, Cor _{i * j}for the element in correlation matrix, Cor _tkcorrelation thresholding for default, obtains matrix N UM _k=(Num _l... Num _i... Num _k) ^tby the Num of numerical value maximum _ithe corresponding interference source of row for place is eliminated the interference source disturbing as needs.

10. according to the device described in the arbitrary claim of claim 6-9, it is characterized in that, described different system comprises:

Global mobile communication GSM900 system, digital communication system DCS1800, TD SDMA access TD-SCDMA system and/or hand-phone system PHS.

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