CN106817186A - A kind of Physical Cell Identifier PCI disturbs the method and device of self-optimizing - Google Patents

A kind of Physical Cell Identifier PCI disturbs the method and device of self-optimizing Download PDF

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Publication number
CN106817186A
CN106817186A CN201510862630.4A CN201510862630A CN106817186A CN 106817186 A CN106817186 A CN 106817186A CN 201510862630 A CN201510862630 A CN 201510862630A CN 106817186 A CN106817186 A CN 106817186A
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pci
target cell
interference
homogeneous
domain
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CN106817186B (en
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卿春
徐霖洲
孔令兴
尹启禄
林淼
杨庭勋
潘广津
赵明伟
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China Mobile Group Guangdong Co Ltd
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China Mobile Group Guangdong Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
    • H04J11/0023—Interference mitigation or co-ordination
    • H04J11/005—Interference mitigation or co-ordination of intercell interference
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/27—Control channels or signalling for resource management between access points
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/52—Allocation or scheduling criteria for wireless resources based on load

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

The present invention provides the method and device that a kind of Physical Cell Identifier PCI disturbs self-optimizing, and the method includes：Obtain the degree of correlation between a PCI and the 2nd PCI；First PCI is PCI corresponding with Target cell, and the 2nd PCI is PCI corresponding with the homogeneous-frequency adjacent-domain of Target cell；Measurement report based on Target cell and homogeneous-frequency adjacent-domain, backstage switching index and frequency sweep data, and the PCI integrated interference coefficients of Target cell are determined according to the degree of correlation；If the PCI integrated interferences coefficient of Target cell is more than a threshold value, determine that Target cell is PCI high interference cells；It is Target cell selection target PCI according to preset rules, and PCI corresponding with Target cell is revised as target PCI.The embodiment of the present invention effectively solves the limitation of traditional PCI optimizations, improves PCI optimization accuracys so that PCI modifications flexibly can timely tackle network change.

Description

A kind of Physical Cell Identifier PCI disturbs the method and device of self-optimizing
Technical field
The present invention relates to wireless communication technology field, more particularly to a kind of Physical Cell Identifier PCI interference is from excellent The method and device of change.
Background technology
Interference is essentially from minizone in LTE identical networkings, system, and wherein PCI interference is the most serious.LTE System is had altogether including 504 PCI (Physical Cell Identifier, Physical Cell Identifier).These PCI points It is 168 groups, every group includes 3 PCI.PCI determines that cell signal is synchronous and whether Stochastic accessing succeeds. Each E-UTRAN (the access mesh portions of 3G (Third Generation) Moblie) cell correspondence only one PCI.Work as LTE When E-UTRAN cell datas in network are more, inevitably PCI multiplexings are that is, multiple E-UTRAN cells use same PCI.Because PCI planning is unreasonable, manually adjust PCI, adjacent area is joined Number such as change at the reason, may cause PCI the conflicts MOD3, MOD6, MOD30 of E-UTRAN minizones And M0 and M1 interference.
Current PCI self-optimizings, simply conflict with reference to PCI, obscure, MOD3, MOD6, MOD30's Situation, is estimated to PCI.PCI optimizations rely primarily on technical staff by analyzing DT (big data) numbers According to optimizing adjustment, and typically only considered cell MOD3 disturbed conditions.
At present, PCI self-optimizings only conflict with reference to PCI, obscure, mod3, mod6, and mod3 situations are carried out Assessment, but there is the PCI such as m0, m1 interference in LTE system simultaneously, it is impossible at utmost reduce minizone PCI interference.PCI optimizations more analyze DT data by technical staff, rule of thumb come live artificial Debugging, expends a large amount of human and material resources；And artificial optimization is based on DT data, PCI modifications fully rely on work Cheng Shi experiences, often occur situation about attending to one thing and lose sight of another, and can not in time tackle network change.
The content of the invention
It is an object of the invention to provide the method and device that a kind of Physical Cell Identifier PCI disturbs self-optimizing, Solve the Consideration of prior art PCI optimizations not comprehensively and PCI modifications fully rely on engineer experience and The problem of network change can not in time be tackled.
In order to achieve the above object, the embodiment of the present invention provides a kind of Physical Cell Identifier PCI interference self-optimizing Method, including：
Obtain the degree of correlation between a PCI and the 2nd PCI；First PCI is corresponding with Target cell PCI, the 2nd PCI is PCI corresponding with the homogeneous-frequency adjacent-domain of Target cell；
Measurement report based on the Target cell and the homogeneous-frequency adjacent-domain, backstage switching index and frequency sweep number According to, and the PCI integrated interference coefficients of the Target cell are determined according to the degree of correlation；
If the PCI integrated interferences coefficient of the Target cell is more than a threshold value, determine that the Target cell is PCI high interference cells；
It is the Target cell selection target PCI according to preset rules, and will be corresponding with the Target cell PCI is revised as the target PCI.
Wherein, the step of degree of correlation between acquisition the first PCI and the 2nd PCI includes：
Obscure that interference, mould 3 are disturbed, mould 6 is disturbed, mould according to the conflict between a PCI and the 2nd PCI 30 interference, m0 interference and m1 interference, determine the degree of correlation between a PCI and the 2nd PCI.
Wherein, the formula of the degree of correlation between determination the first PCI and the 2nd PCI is：
Rpci=Km*Rm+Km3*Rm3+Km6*Rm6+Km30*Rm30+Km0*Rm0+Km1*Rm1；
Wherein, the RpciIt is the degree of correlation between a PCI and the 2nd PCI, the Km、Km3、Km6、 Km30、Km0And Km1It is the interference weighted factor between a PCI and the 2nd PCI, the RmFor Interference correlation, the R are obscured in the conflict of the first PCI and the 2nd PCIm3It is a PCI and The interference correlation of mould 3 of two PCI, the Rm6For the mould 6 of a PCI and the 2nd PCI disturbs correlation Degree, the Rm30It is the interference correlation of mould 30 of a PCI and the 2nd PCI, the Rm0It is described The m0 interference correlations of one PCI and the 2nd PCI, the Rm1It is the m1 of a PCI and the 2nd PCI Interference correlation.
Wherein, the measurement report based on the Target cell and the homogeneous-frequency adjacent-domain, backstage switching index And frequency sweep data, and the step of the PCI integrated interference coefficients of the Target cell is determined according to the degree of correlation Suddenly include：
Measurement report based on the Target cell and the homogeneous-frequency adjacent-domain, and institute is determined according to the degree of correlation State a PCI interference coefficients of Target cell；
Backstage switching index based on the Target cell and the homogeneous-frequency adjacent-domain, and it is true according to the degree of correlation 2nd PCI interference coefficients of the fixed Target cell；
Frequency sweep data based on the Target cell and the homogeneous-frequency adjacent-domain, and institute is determined according to the degree of correlation State the 3rd PCI interference coefficients of Target cell；
According to first interference coefficient, the second interference coefficient and the 3rd interference coefficient, the target is determined The PCI integrated interference coefficients of cell.
Wherein, the measurement report based on the Target cell and the homogeneous-frequency adjacent-domain, and according to the phase The step of Guan Du determines a PCI interference coefficients of the Target cell includes：
The measurement report of measurement report and homogeneous-frequency adjacent-domain according to Target cell, determines the sampled point of Target cell Number and the sampling number of homogeneous-frequency adjacent-domain；
The sampling number of sampling number and homogeneous-frequency adjacent-domain according to the Target cell, determines Target cell and same The degree of correlation based on the measurement report of frequency adjacent area；
According to Target cell and the degree of correlation based on the measurement report of co-frequency cell, determine Target cell and The level interference coefficient based on measurement report of homogeneous-frequency adjacent-domain；
According to the degree of correlation between the level interference coefficient and a PCI and the 2nd PCI, mesh is determined Mark cell and the interference coefficient based on measurement report of homogeneous-frequency adjacent-domain；
Interference coefficient and the Target cell according to Target cell and homogeneous-frequency adjacent-domain based on measurement report The number of homogeneous-frequency adjacent-domain, determines a PCI interference coefficients of Target cell.
Wherein, the backstage switching index based on the Target cell and the homogeneous-frequency adjacent-domain, and according to the phase The step of Guan Du determines the 2nd PCI interference coefficients of the Target cell includes：
The switching index of backstage switching index and homogeneous-frequency adjacent-domain according to Target cell, determines cutting for Target cell Change the switching times of number of times and homogeneous-frequency adjacent-domain；
The switching times of switching times and homogeneous-frequency adjacent-domain according to Target cell, determine Target cell and with frequency neighbour The degree of correlation for switching index based on backstage in area；
The degree of correlation and a PCI according to Target cell and homogeneous-frequency adjacent-domain based on backstage switching index and the The degree of correlation between two PCI, determines the interference system for switching index based on backstage of Target cell and homogeneous-frequency adjacent-domain Number；
Interference coefficient and Target cell according to Target cell and homogeneous-frequency adjacent-domain based on backstage switching index The number of homogeneous-frequency adjacent-domain, determines the 2nd PCI interference coefficients of Target cell.
Wherein, the frequency sweep data based on the Target cell and the homogeneous-frequency adjacent-domain, and according to the phase The step of Guan Du determines the 3rd PCI interference coefficients of the Target cell includes：
The frequency sweep data of frequency sweep data and homogeneous-frequency adjacent-domain according to Target cell, determine the sampled point of Target cell Number and the sampling number of homogeneous-frequency adjacent-domain；
The sampling number of sampling number and homogeneous-frequency adjacent-domain according to the Target cell, determines Target cell and same The degree of correlation based on frequency sweep data of frequency adjacent area；
According to Target cell and the degree of correlation based on the frequency sweep data of co-frequency cell, determine Target cell and The level interference coefficient based on frequency sweep data of homogeneous-frequency adjacent-domain；
According to the degree of correlation between the level interference coefficient and a PCI and the 2nd PCI, mesh is determined Mark cell and the interference coefficient based on frequency sweep data of homogeneous-frequency adjacent-domain；
Interference coefficient and the Target cell according to Target cell and homogeneous-frequency adjacent-domain based on frequency sweep data The number of homogeneous-frequency adjacent-domain, determines the 3rd PCI interference coefficients of Target cell.
Wherein, it is described according to first interference coefficient, the second interference coefficient and the 3rd interference coefficient, really The step of PCI integrated interference coefficients of the fixed Target cell, includes：
It is dry according to first interference coefficient, measurement report interference weighted factor, the second interference coefficient, switching Weighted factor, the 3rd interference coefficient and Sweeping nonlinearity weighted factor are disturbed, the PCI synthesis of Target cell is determined Interference coefficient.
Wherein, it is described according to preset rules be the Target cell selection target PCI the step of include：
PCI integrated interference coefficients according to other cells in station, carry out the selection Target cell in slave station Target PCI；
If not meeting the target PCI of condition in standing, selected in planned range based on PCI optimizations constraints Target PCI；Wherein, PCI optimizations constraints includes：With station cell PCI do not repeat, any cell with The PCI of homogeneous-frequency adjacent-domain is not repeated, the PCI of the adjacent area of the two neighboring same frequency of cell is not repeated and preset range Interior PCI is not repeated.
Wherein, also include before the degree of correlation between acquisition the first PCI and the 2nd PCI：
It is determined that be not traffic affecting alarm cell and be not coverage cell and be not covering abnormal cell It is Target cell.
The embodiment of the present invention also provides the device that a kind of Physical Cell Identifier PCI disturbs self-optimizing, including：
Acquisition module, for obtaining the degree of correlation between a PCI and the 2nd PCI；First PCI is PCI corresponding with Target cell, the 2nd PCI is PCI corresponding with the homogeneous-frequency adjacent-domain of Target cell；
Coefficient determination module, for the measurement report based on the Target cell and the homogeneous-frequency adjacent-domain, backstage Switching index and frequency sweep data, and the PCI integrated interferences of the Target cell are determined according to the degree of correlation Coefficient；
Interference determining module, if being more than a threshold value for the PCI integrated interferences coefficient of the Target cell, Determine that the Target cell is PCI high interference cells；
Selection modified module, for being the Target cell selection target PCI according to preset rules, and will be with institute State the corresponding PCI of Target cell and be revised as the target PCI.
Wherein, the acquisition module includes：
Acquisition submodule, it is dry for obscuring interference, mould 3 according to the conflict between a PCI and the 2nd PCI Disturb, mould 6 is disturbed, mould 30 is disturbed, m0 interference and m1 are disturbed, and determines a PCI and the 2nd PCI Between the degree of correlation.
Wherein, the formula of the degree of correlation in the acquisition submodule between determination the first PCI and the 2nd PCI is：
Rpci=Km*Rm+Km3*Rm3+Km6*Rm6+Km30*Rm30+Km0*Rm0+Km1*Rm1
Wherein, the RpciIt is the degree of correlation between a PCI and the 2nd PCI, the Km、Km3、Km6、 Km30、Km0And Km1It is the interference weighted factor between a PCI and the 2nd PCI, the RmFor Interference correlation, the R are obscured in the conflict of the first PCI and the 2nd PCIm3It is a PCI and The interference correlation of mould 3 of two PCI, the Rm6For the mould 6 of a PCI and the 2nd PCI disturbs correlation Degree, the Rm30It is the interference correlation of mould 30 of a PCI and the 2nd PCI, the Rm0It is described The m0 interference correlations of one PCI and the 2nd PCI, the Rm1It is the m1 of a PCI and the 2nd PCI Interference correlation.
Wherein, the coefficient determination module includes：
First coefficient determination sub-module, for the measurement report based on the Target cell and the homogeneous-frequency adjacent-domain, And a PCI interference coefficients of the Target cell are determined according to the degree of correlation；
Second coefficient determination sub-module, for the backstage switching based on the Target cell and the homogeneous-frequency adjacent-domain Index, and the 2nd PCI interference coefficients of the Target cell are determined according to the degree of correlation；
3rd coefficient determination sub-module, for the frequency sweep data based on the Target cell and the homogeneous-frequency adjacent-domain, And the 3rd PCI interference coefficients of the Target cell are determined according to the degree of correlation；
4th coefficient determination sub-module, for according to first interference coefficient, the second interference coefficient and Three interference coefficients, determine the PCI integrated interference coefficients of the Target cell.
Wherein, the first coefficient determination sub-module includes：
First sampling unit, for measurement report and the measurement report of homogeneous-frequency adjacent-domain according to Target cell, really The sampling number of the cell that sets the goal and the sampling number of homogeneous-frequency adjacent-domain；
First correlation unit, for sampling number and the sampling number of homogeneous-frequency adjacent-domain according to the Target cell, Determine the degree of correlation based on the measurement report of Target cell and homogeneous-frequency adjacent-domain；
First level disturbs unit, for according to Target cell and co-frequency cell based on the measurement report The degree of correlation, determines the level interference coefficient based on measurement report of Target cell and homogeneous-frequency adjacent-domain；
First interference coefficient unit, for according to the level interference coefficient and a PCI and the 2nd PCI Between the degree of correlation, determine the interference coefficient based on measurement report of Target cell and homogeneous-frequency adjacent-domain；
First factor determination unit, for the interference based on measurement report according to Target cell and homogeneous-frequency adjacent-domain The number of the homogeneous-frequency adjacent-domain of coefficient and the Target cell, determines a PCI interference coefficients of Target cell.
Wherein, the second coefficient determination sub-module includes：
Switch unit, the switching index for switching index and homogeneous-frequency adjacent-domain according to the backstage of Target cell, really The switching times of the cell that sets the goal and the switching times of homogeneous-frequency adjacent-domain；
Second correlation unit, for switching times and the switching times of homogeneous-frequency adjacent-domain according to Target cell, really The cell that sets the goal and the degree of correlation for switching index based on backstage of homogeneous-frequency adjacent-domain；
Second interference coefficient unit, for according to Target cell and homogeneous-frequency adjacent-domain based on backstage switching index The degree of correlation between the degree of correlation and a PCI and the 2nd PCI, determines the base of Target cell and homogeneous-frequency adjacent-domain Switch the interference coefficient of index in backstage；
Second factor determination unit, for according to Target cell and homogeneous-frequency adjacent-domain based on backstage switching index The number of the homogeneous-frequency adjacent-domain of interference coefficient and Target cell, determines the 2nd PCI interference coefficients of Target cell.
Wherein, the 3rd coefficient determination sub-module includes：
Second sampling unit, for frequency sweep data and the frequency sweep data of homogeneous-frequency adjacent-domain according to Target cell, really The sampling number of the cell that sets the goal and the sampling number of homogeneous-frequency adjacent-domain；
Third phase closes unit, for sampling number and the sampling number of homogeneous-frequency adjacent-domain according to the Target cell, Determine the degree of correlation based on frequency sweep data of Target cell and homogeneous-frequency adjacent-domain；
Second electrical level disturbs unit, for according to Target cell and co-frequency cell based on the frequency sweep data The degree of correlation, determines the level interference coefficient based on frequency sweep data of Target cell and homogeneous-frequency adjacent-domain；
3rd interference coefficient unit, for according to the level interference coefficient and a PCI and the 2nd PCI Between the degree of correlation, determine the interference coefficient based on frequency sweep data of Target cell and homogeneous-frequency adjacent-domain；
3rd factor determination unit, for the interference based on frequency sweep data according to Target cell and homogeneous-frequency adjacent-domain The number of the homogeneous-frequency adjacent-domain of coefficient and the Target cell, determines the 3rd PCI interference coefficients of Target cell.
Wherein, the 4th coefficient determination sub-module includes：
4th factor determination unit, for according to first interference coefficient, measurement report interference weighted factor, Second interference coefficient, switching interference weighted factor, the 3rd interference coefficient and Sweeping nonlinearity weighted factor, really The PCI integrated interference coefficients of the cell that sets the goal.
Wherein, the selection modified module includes：
First choice changes submodule, for the PCI integrated interference coefficients according to other cells in station, enters The target PCI of the selection Target cell in row slave station；
Second selection modification submodule, if not meeting the target PCI of condition in for standing, based on PCI optimizations Constraints selection target PCI in planned range；Wherein, PCI optimizations constraints includes：With station cell PCI do not repeat, the PCI of any cell and homogeneous-frequency adjacent-domain is not repeated, the adjacent area of the two neighboring same frequency of cell PCI not repeat and preset range in PCI do not repeat.
Wherein, described device also includes：
Target determination module, for determine be not traffic affecting alarm cell and be not coverage cell, And be not that covering abnormal cell is Target cell.
Above-mentioned technical proposal of the invention at least has the advantages that：
In the method and device of the Physical Cell Identifier PCI interference self-optimizings of the embodiment of the present invention, with reference to measurement Report MR, frequency sweep data and backstage switch index to be calculated the PCI integrated interference coefficients of Target cell, PCI high interference cells are recognized further according to PCI integrated interferences coefficient, the embodiment of the present invention is dry according to different PCI Influence degree of the type to cell is disturbed, assessment is weighted to cell PCI interference, at utmost reduce cell Between PCI interference so that PCI optimization it is more accurate；All PCI cause of failures are considered again, are calculated Go out the target PCI of each Target cell, target PCI is the optimal PCI of the Target cell, improve PCI Optimization accuracy, flexibly timely tackles network change.
Brief description of the drawings
Fig. 1 represents the basic of the method for Physical Cell Identifier PCI interference self-optimizing provided in an embodiment of the present invention Flow chart of steps；
Fig. 2 represents the composition of the device of Physical Cell Identifier PCI interference self-optimizing provided in an embodiment of the present invention Structural representation.
Specific embodiment
To make the technical problem to be solved in the present invention, technical scheme and advantage clearer, below in conjunction with attached Figure and specific embodiment are described in detail.
A kind of problem of the present invention for the limitation of the optimizations of PCI in the prior art, there is provided Physical Cell Identifier PCI disturbs the method and device of self-optimizing, and index is switched with reference to measurement report MR, frequency sweep data and backstage To be calculated the PCI integrated interference coefficients of Target cell, PCI is recognized further according to PCI integrated interferences coefficient High interference cell, the embodiment of the present invention according to different PCI interference types to the influence degree of cell, to cell PCI interference is weighted assessment, at utmost reduces the PCI interference of minizone so that PCI optimizes more Accurately；All PCI cause of failures are considered again, calculate the target PCI of each Target cell, the target PCI is the optimal PCI of the Target cell, improves PCI optimization accuracys, flexibly timely tackles network change.
As shown in figure 1, the embodiment of the present invention provides a kind of method that Physical Cell Identifier PCI disturbs self-optimizing, Including：
Step 11, obtains the degree of correlation between a PCI and the 2nd PCI；First PCI is and target Cell corresponding PCI, the 2nd PCI are PCI corresponding with the homogeneous-frequency adjacent-domain of Target cell；
Step 12, the measurement report based on the Target cell and the homogeneous-frequency adjacent-domain, backstage switching index with And frequency sweep data, and the PCI integrated interference coefficients of the Target cell are determined according to the degree of correlation；
Step 13, if the PCI integrated interferences coefficient of the Target cell is more than a threshold value, determines the mesh Mark cell is PCI high interference cells；
Step 14, is the Target cell selection target PCI according to preset rules, and will be small with the target The corresponding PCI in area is revised as the target PCI.
The PCI degrees of correlation are precalculated out by the above embodiment of the present invention, set up PCI correlation matrix tables, Storage precomputes the degree of correlation between any two in all PCI in database, then step 11 can be straight Connect the degree of correlation obtained from database between a PCI and the 2nd PCI.Then composite measurement report MR, Backstage switches index and frequency sweep data are calculated the PCI integrated interference coefficients of Target cell, according to PCI Integrated interference coefficient just can determine that whether Target cell is PCI high interference cells；And be PCI high interference cells Selection PCI integrated interferences less new PCI, i.e., optimal PCI.
The embodiment of the present invention is based on measurement report MR, backstage switching index and frequency sweep data, according to different PCI Interference type is weighted assessment so that PCI is disturbed more to the influence degree of cell to cell PCI interference Accurately.I.e. the embodiment of the present invention efficiently solves traditional PCI optimizations limitation, and it is accurate to improve PCI optimizations True property, flexibly timely tackles network change.
Specifically, the step of the above embodiment of the present invention 11 includes：
Step 111, according to the conflict between a PCI and the 2nd PCI obscure interference, mould 3 disturb, mould 6 Interference, mould 30 are disturbed, m0 interference and m1 are disturbed, and determine the phase between a PCI and the 2nd PCI Guan Du.
And the formula of the degree of correlation between determination the first PCI and the 2nd PCI is：
Rpci=Km*Rm+Km3*Rm3+Km6*Rm6+Km30*Rm30+Km0*Rm0+Km1*Rm1；
Wherein, the RpciIt is the degree of correlation between a PCI and the 2nd PCI, the Km、Km3、Km6、 Km30、Km0And Km1It is the interference weighted factor between a PCI and the 2nd PCI, the RmFor Interference correlation, the R are obscured in the conflict of the first PCI and the 2nd PCIm3It is a PCI and The interference correlation of mould 3 of two PCI, the Rm6For the mould 6 of a PCI and the 2nd PCI disturbs correlation Degree, the Rm30It is the interference correlation of mould 30 of a PCI and the 2nd PCI, the Rm0It is described The m0 interference correlations of one PCI and the 2nd PCI, the Rm1It is the m1 of a PCI and the 2nd PCI Interference correlation.
Between the PCI of the embodiment of the present invention the degree of correlation combination PCI conflict obscure interference, mould 3 disturb, mould 6 Interference, mould 30 are disturbed, m0 interference and m1 are disturbed, and the PCI interference of minizone is reduced to the full extent. Specifically, the degree of correlation R of two PCIpciFor：
Rpci=Km*Rm+Km3*Rm3+Km6*Rm6+Km30*Rm30+Km0*Rm0+Km1*Rm1；
Wherein, PCI interference weighted factor：Km=1, Km3=0.5, Km6=0.25, Km30=0.25, Km0=0.25, Km1=0.25.
It should be noted that weighted factor supports artificial self-defined.
And, when two PCI are equal, Rm=1, otherwise Rm=0；
When two PCI moulds 3 are equal, Rm3=1, otherwise Rm3=0；
When two PCI moulds 6 are equal, Rm6=1, otherwise Rm6=0；
When two PCI moulds 30 are equal, Rm30=1, otherwise Rm30=0；
When two PCI m0 are equal, Rm0=1, otherwise Rm0=0；
When two PCI m1 are equal, Rm1=1, otherwise Rm1=0.
And PCI correlation matrix tables are as shown in table 1：
Field sequence number Field name 1 Field name 2 Correlation Remarks
1 PCI 1 PCI 1
2 PCI 1 PCI 2
3 PCI 1 …
The PCI correlation matrix tables of table 1
Explanation is needed further exist for, not all cell can be made in the above embodiment of the present invention It is the Target cell of assessment PCI interference, the embodiment of the present invention also provides the method for determining Target cell；Specifically For：
It is determined that be not traffic affecting alarm cell and be not coverage cell and be not covering abnormal cell It is Target cell.
Specifically, there is traffic affecting alarm cell, not as assessment cell in cell alarm assessment.Base In MR data, MPS process assessment is carried out；The MR data of cell are obtained, covering was recognized, is covered different Chang little Qu.Coverage cell and covering abnormal cell are crossed not as assessment cell.
Wherein, coverage cell definition is crossed：Beyond Serving cell and itself 1.5 times of average station spacing (adjustable) 3 adjacent cell coefficient correlations>1%, and Serving cell average level RSRP_s>=-105dBm；Coefficient correlation Definition：Meet the neighbor cell measurement report of the MR of condition/main plot MR general report numbers, Serving cell MR Report total is denominator, meets RSRP_s-RSRP_n<=6dBm, then molecule add 1；
Wherein, covering abnormal cell definition：Serving cell azimuth-antenna reaches the MR in the range of angle ± 60 degree Measurement report number/MR general report numbers>3%, and Serving cell RSRP>- 105dBm, then it is assumed that the cell is covered Lid is abnormal.
Specifically, step 12 includes in the above embodiment of the present invention：
Step 121, the measurement report based on the Target cell and the homogeneous-frequency adjacent-domain, and according to the correlation Degree determines a PCI interference coefficients of the Target cell；
Step 122, the backstage switching index based on the Target cell and the homogeneous-frequency adjacent-domain, and according to described The degree of correlation determines the 2nd PCI interference coefficients of the Target cell；
Step 123, the frequency sweep data based on the Target cell and the homogeneous-frequency adjacent-domain, and according to the correlation Degree determines the 3rd PCI interference coefficients of the Target cell；
Step 124, according to first interference coefficient, the second interference coefficient and the 3rd interference coefficient, it is determined that The PCI integrated interference coefficients of the Target cell.
The embodiment of the present invention is based on measurement report MR, backstage switching index and frequency sweep data, dry to Target cell Disturb and be estimated, draw the integrated interference coefficient of Target cell.
The PCI interference assessments of measurement report MR are primarily based on, i.e. step 121 includes：
The measurement report of measurement report and homogeneous-frequency adjacent-domain according to Target cell, determines the sampled point of Target cell Number and the sampling number of homogeneous-frequency adjacent-domain；
The sampling number of sampling number and homogeneous-frequency adjacent-domain according to the Target cell, determines Target cell and same The degree of correlation based on the measurement report of frequency adjacent area；
According to Target cell and the degree of correlation based on the measurement report of co-frequency cell, determine Target cell and The level interference coefficient based on measurement report of homogeneous-frequency adjacent-domain；
According to the degree of correlation between the level interference coefficient and a PCI and the 2nd PCI, mesh is determined Mark cell and the interference coefficient based on measurement report of homogeneous-frequency adjacent-domain；
Interference coefficient and the Target cell according to Target cell and homogeneous-frequency adjacent-domain based on measurement report The number of homogeneous-frequency adjacent-domain, determines a PCI interference coefficients of Target cell.
That is the degree of correlation R of the cells of MR twomr(Sc-Nc)For：Rmr(Sc-Nc)=Samplenumber(Sc-Nc)/Sampletotal；
Then Cell level interference coefficient I of MR tworsrp(Sc-Nc)For：Irsrp(Sc-Nc)=(Krsrp(-∞,3)*Rmr(Sc-Nc) +Krsrp[3,6]*Rmr(Sc-Nc)+Krsrp[7,9]*Rmr(Sc-Nc)+Krsrp[10,+∞)*Rmr(Sc-Nc))
Level disturbs weighted factor：Krsrp(-∞,3)=1 Krsrp[3,6]=0.5, Krsrp[7,9]=0.25, Krsrp[10,+∞)=0, Weighted factor is supported artificial self-defined；
The area interference coefficient IK of MR twomr(Sc-Nc)For：IKmr(Sc-Nc)=Irsrp*Rpci
Then, a PCI interference coefficients IK of Target cellm：
Wherein, relevant parameter table is as shown in table 2：
Table 2 is based on the relevant parameter of measurement report MR
Then the PCI interference assessments of index are switched based on backstage, i.e. step 122 includes：
The switching index of backstage switching index and homogeneous-frequency adjacent-domain according to Target cell, determines cutting for Target cell Change the switching times of number of times and homogeneous-frequency adjacent-domain；
The switching times of switching times and homogeneous-frequency adjacent-domain according to Target cell, determine Target cell and with frequency neighbour The degree of correlation for switching index based on backstage in area；
The degree of correlation and a PCI according to Target cell and homogeneous-frequency adjacent-domain based on backstage switching index and the The degree of correlation between two PCI, determines the interference system for switching index based on backstage of Target cell and homogeneous-frequency adjacent-domain Number；
Interference coefficient and Target cell according to Target cell and homogeneous-frequency adjacent-domain based on backstage switching index The number of homogeneous-frequency adjacent-domain, determines the 2nd PCI interference coefficients of Target cell.
Switch two cell degree of correlation RhoFor：Rho=HOnumber(Sc-Nc)/HOintraFnumber
Switch two area interference coefficient IKho(Sc-Nc)For：IKho(Sc-Nc)=HOnumber(Sc-Nc)/HOintraFnumber*Rpci
First PCI interference coefficients IK of Target cellhoFor：
Wherein, relevant parameter table is as follows：
Field sequence number Field name Type Remarks
1 Scell Name str Serving cell title
2 Sc ENodeb ID int Serving cell ENodeb ID
3 Scell ID int Serving cell CELL ID
4 Sc Earfcn int Serving cell frequency
5 Sc PCI int Serving cell PCI
6 Ncell Name str Homogeneous-frequency adjacent-domain title
7 Nc Earfcn int Homogeneous-frequency adjacent-domain frequency
8 Nc PCI int Homogeneous-frequency adjacent-domain PCI
9 int Homogeneous-frequency adjacent-domain switching times
10 Int Homogeneous-frequency adjacent-domain switches total degree
… … … …
Table 3 is based on the relevant parameter that backstage switches index
Further, the PCI interference assessments based on frequency sweep data, i.e. step 123 includes：
The frequency sweep data of frequency sweep data and homogeneous-frequency adjacent-domain according to Target cell, determine the sampled point of Target cell Number and the sampling number of homogeneous-frequency adjacent-domain；
The sampling number of sampling number and homogeneous-frequency adjacent-domain according to the Target cell, determines Target cell and same The degree of correlation based on frequency sweep data of frequency adjacent area；
According to Target cell and the degree of correlation based on the frequency sweep data of co-frequency cell, determine Target cell and The level interference coefficient based on frequency sweep data of homogeneous-frequency adjacent-domain；
According to the degree of correlation between the level interference coefficient and a PCI and the 2nd PCI, mesh is determined Mark cell and the interference coefficient based on frequency sweep data of homogeneous-frequency adjacent-domain；
Interference coefficient and the Target cell according to Target cell and homogeneous-frequency adjacent-domain based on frequency sweep data The number of homogeneous-frequency adjacent-domain, determines the 3rd PCI interference coefficients of Target cell.
That is the degree of correlation R of two cells based on frequency sweep datasc(Sc-Nc)For：Rsc(Sc-Nc)=Samplenumber(Sc-Nc) /Sampletotal；
Then it is based on two Cell level interference coefficient I of frequency sweep datarsrp(Sc-Nc)For：Irsrp(Sc-Nc)=(Krsrp(-∞,3)* Rsc(Sc-Nc)+Krsrp[3,6]*Rsc(Sc-Nc)+Krsrp[7,9]*Rsc(Sc-Nc)+Krsrp[10,+∞)*Rsc(Sc-Nc))
Level disturbs weighted factor：Krsrp(-∞,3)=1 Krsrp[3,6]=0.5, Krsrp[7,9]=0.25, Krsrp[10,+∞)=0, Weighted factor is supported artificial self-defined；
The two area interference coefficient IK based on frequency sweep datasc(Sc-Nc)For：IKmr(Sc-Nc)=Irsrp*Rpci
Then, the 3rd PCI interference coefficients IK of Target cellsc：
Wherein, relevant parameter table is as shown in table 4：
Table 4 is based on the relevant parameter of frequency sweep data
The PCI integrated interference coefficients for finally determining the Target cell are：I.e. step 124 includes：
It is dry according to first interference coefficient, measurement report interference weighted factor, the second interference coefficient, switching Weighted factor, the 3rd interference coefficient and Sweeping nonlinearity weighted factor are disturbed, the PCI synthesis of Target cell is determined Interference coefficient.
MR interference weighted factors K defined in the embodiment of the present inventionmr=0.4；Switching interference weighted factor Kho =0.4；Sweeping nonlinearity weighted factor Ksc=0.2；Wherein, weighted factor is supported artificial self-defined.Then target is small The PCI integrated interference coefficients IK in areacompFor：IKcomp=Kmr*IKmr+Kho*IKho+Ksc*IKsc
Further, PCI high interferences cell identification.Pre-set cell PCI high interferences thresholding (i.e. step Threshold value in 13), it is judged as PCI high interference cells more than the cell of the thresholding, PCI self-optimizings need to be carried out. PCI high interference cell definitions：Area interference coefficient>PCI high interference thresholdings；Threshold value may be set to： Wherein K=0.95 (adjustable K ∈ (0,1]), N are macro station cell Sum.
Finally, the method that the embodiment of the present invention provides selection target PCI, i.e. step 14 includes：
Step 141, the PCI integrated interference coefficients according to other cells in station carry out selection in slave station described The target PCI of Target cell；
Step 142, if not meeting the target PCI of condition in station, based on PCI optimization constraintss in planning In the range of selection target PCI；Wherein, PCI optimizations constraints includes：Do not repeated with the PCI of station cell, The PCI of any cell and homogeneous-frequency adjacent-domain is not repeated, the PCI of the adjacent area of the two neighboring same frequency of cell do not repeat with And PCI is not repeated in preset range.
It is first consistent with prior art in the above embodiment of the present invention, carry out interior intermodulation of standing；If intermodulation failure in standing Optimal PCI is then selected in planned range；Specifically, intermodulation in station, the interior PCI that stands is carried out based on this principle Interference coefficient poll is calculated, and determines optimal PCI；For example, if CELL A are identified as PCI high interference cells, Then by calculating the IK of CELL Acomp-a, CELL A IK on the direction of CELL Bcom-a2bAnd CELL The IK of Bcomp-b, CELL B are in the direction of CELL A to IKcomp-b2a.Work as IKcomp-a2b<IKcomp-a, And IKcom-b2a<=IKcomp-b, then CELL A and CELL B intermodulation PCI, otherwise CELL A and CELL C is compared.If in planning PCI scopes [a, b], selecting satisfaction without condition PCI is met in standing The PCI of basic constraints, carries out optimal PCI assessments.
Wherein, the basic constraints of PCI optimizations is as follows：
Do not repeated with the PCI of station cell；
Any cell is not repeated with the PCI of homogeneous-frequency adjacent-domain, and the adjacent area PCI of the two neighboring same frequency of cell is not repeated；
And PCI can not be repeated in the range of 1KM.
To sum up, existing PCI self-optimizings only conflict to PCI, obscure, mod3, mod6, and mod30 carries out excellent Change assessment, the PCI interference self-organization method that the above embodiment of the present invention is provided on this basis, is comprehensively examined Consider m0, m1 interference of PCI so that PCI is assessed more comprehensively；On the other hand existing PCI self-optimizings are Based on MR data, unified standard is employed when PCI is disturbed processing, what the above embodiment of the present invention was provided PCI interference self-organization methods are based on MR, backstage switching index and frequency sweep data, are disturbed according to different PCI Type is weighted assessment to the influence degree of cell to cell PCI interference, and PCI optimizations are more accurate；And it is existing Having PCI to optimize can only provide a kind of optimal PCI methods of screening, and the PCI that the above embodiment of the present invention is provided does Disturb self-organization method provides how to recognize PCI high interference cells, and optimize, improve PCI optimizations accurate True property so that PCI optimizations flexibly can timely tackle network change.
In order to more realize above-mentioned purpose, as shown in Fig. 2 the embodiment of the present invention also provides a kind of physical area Mark PCI disturbs the device of self-optimizing, including：
Acquisition module 21, for obtaining the degree of correlation between a PCI and the 2nd PCI；First PCI It is PCI corresponding with Target cell, the 2nd PCI is PCI corresponding with the homogeneous-frequency adjacent-domain of Target cell；
Coefficient determination module 22, for the measurement report based on the Target cell and the homogeneous-frequency adjacent-domain, after Platform switches index and frequency sweep data, and determines that the PCI of the Target cell is comprehensively dry according to the degree of correlation Disturb coefficient；
Interference determining module 23, if being more than a threshold value for the PCI integrated interferences coefficient of the Target cell, Determine that the Target cell is PCI high interference cells；
Selection modified module 24, for being the Target cell selection target PCI according to preset rules, and will PCI corresponding with the Target cell is revised as the target PCI.
Specifically, acquisition module 21 described in the above embodiment of the present invention includes：
Acquisition submodule, it is dry for obscuring interference, mould 3 according to the conflict between a PCI and the 2nd PCI Disturb, mould 6 is disturbed, mould 30 is disturbed, m0 interference and m1 are disturbed, and determines a PCI and the 2nd PCI Between the degree of correlation.
Specifically, a PCI and the 2nd PCI is determined described in the above embodiment of the present invention in acquisition submodule Between the formula of the degree of correlation be：
Rpci=Km*Rm+Km3*Rm3+Km6*Rm6+Km30*Rm30+Km0*Rm0+Km1*Rm1
Wherein, the RpciIt is the degree of correlation between a PCI and the 2nd PCI, the Km、Km3、Km6、 Km30、Km0And Km1It is the interference weighted factor between a PCI and the 2nd PCI, the RmFor Interference correlation, the R are obscured in the conflict of the first PCI and the 2nd PCIm3It is a PCI and The interference correlation of mould 3 of two PCI, the Rm6For the mould 6 of a PCI and the 2nd PCI disturbs correlation Degree, the Rm30It is the interference correlation of mould 30 of a PCI and the 2nd PCI, the Rm0It is described The m0 interference correlations of one PCI and the 2nd PCI, the Rm1It is the m1 of a PCI and the 2nd PCI Interference correlation.
Specifically, coefficient determination module 22 described in the above embodiment of the present invention includes：
First coefficient determination sub-module, for the measurement report based on the Target cell and the homogeneous-frequency adjacent-domain, And a PCI interference coefficients of the Target cell are determined according to the degree of correlation；
Second coefficient determination sub-module, for the backstage switching based on the Target cell and the homogeneous-frequency adjacent-domain Index, and the 2nd PCI interference coefficients of the Target cell are determined according to the degree of correlation；
3rd coefficient determination sub-module, for the frequency sweep data based on the Target cell and the homogeneous-frequency adjacent-domain, And the 3rd PCI interference coefficients of the Target cell are determined according to the degree of correlation；
4th coefficient determination sub-module, for according to first interference coefficient, the second interference coefficient and Three interference coefficients, determine the PCI integrated interference coefficients of the Target cell.
Specifically, the first coefficient determination sub-module includes described in the above embodiment of the present invention：
First sampling unit, for measurement report and the measurement report of homogeneous-frequency adjacent-domain according to Target cell, really The sampling number of the cell that sets the goal and the sampling number of homogeneous-frequency adjacent-domain；
First correlation unit, for sampling number and the sampling number of homogeneous-frequency adjacent-domain according to the Target cell, Determine the degree of correlation based on the measurement report of Target cell and homogeneous-frequency adjacent-domain；
First level disturbs unit, for according to Target cell and co-frequency cell based on the measurement report The degree of correlation, determines the level interference coefficient based on measurement report of Target cell and homogeneous-frequency adjacent-domain；
First interference coefficient unit, for according to the level interference coefficient and a PCI and the 2nd PCI Between the degree of correlation, determine the interference coefficient based on measurement report of Target cell and homogeneous-frequency adjacent-domain；
First factor determination unit, for the interference based on measurement report according to Target cell and homogeneous-frequency adjacent-domain The number of the homogeneous-frequency adjacent-domain of coefficient and the Target cell, determines a PCI interference coefficients of Target cell.
Specifically, the second coefficient determination sub-module includes described in the above embodiment of the present invention：
Switch unit, the switching index for switching index and homogeneous-frequency adjacent-domain according to the backstage of Target cell, really The switching times of the cell that sets the goal and the switching times of homogeneous-frequency adjacent-domain；
Second correlation unit, for switching times and the switching times of homogeneous-frequency adjacent-domain according to Target cell, really The cell that sets the goal and the degree of correlation for switching index based on backstage of homogeneous-frequency adjacent-domain；
Second interference coefficient unit, for according to Target cell and homogeneous-frequency adjacent-domain based on backstage switching index The degree of correlation between the degree of correlation and a PCI and the 2nd PCI, determines the base of Target cell and homogeneous-frequency adjacent-domain Switch the interference coefficient of index in backstage；
Second factor determination unit, for according to Target cell and homogeneous-frequency adjacent-domain based on backstage switching index The number of the homogeneous-frequency adjacent-domain of interference coefficient and Target cell, determines the 2nd PCI interference coefficients of Target cell.
Specifically, the 3rd coefficient determination sub-module includes described in the above embodiment of the present invention：
Second sampling unit, for frequency sweep data and the frequency sweep data of homogeneous-frequency adjacent-domain according to Target cell, really The sampling number of the cell that sets the goal and the sampling number of homogeneous-frequency adjacent-domain；
Third phase closes unit, for sampling number and the sampling number of homogeneous-frequency adjacent-domain according to the Target cell, Determine the degree of correlation based on frequency sweep data of Target cell and homogeneous-frequency adjacent-domain；
Second electrical level disturbs unit, for according to Target cell and co-frequency cell based on the frequency sweep data The degree of correlation, determines the level interference coefficient based on frequency sweep data of Target cell and homogeneous-frequency adjacent-domain；
3rd interference coefficient unit, for according to the level interference coefficient and a PCI and the 2nd PCI Between the degree of correlation, determine the interference coefficient based on frequency sweep data of Target cell and homogeneous-frequency adjacent-domain；
3rd factor determination unit, for the interference based on frequency sweep data according to Target cell and homogeneous-frequency adjacent-domain The number of the homogeneous-frequency adjacent-domain of coefficient and the Target cell, determines the 3rd PCI interference coefficients of Target cell.
Specifically, the 4th coefficient determination sub-module includes described in the above embodiment of the present invention：
4th factor determination unit, for according to first interference coefficient, measurement report interference weighted factor, Second interference coefficient, switching interference weighted factor, the 3rd interference coefficient and Sweeping nonlinearity weighted factor, really The PCI integrated interference coefficients of the cell that sets the goal.
Specifically, selection modified module 24 described in the above embodiment of the present invention includes：
First choice changes submodule, for the PCI integrated interference coefficients according to other cells in station, enters The target PCI of the selection Target cell in row slave station；
Second selection modification submodule, if not meeting the target PCI of condition in for standing, based on PCI optimizations Constraints selection target PCI in planned range；Wherein, PCI optimizations constraints includes：With station cell PCI do not repeat, the PCI of any cell and homogeneous-frequency adjacent-domain is not repeated, the adjacent area of the two neighboring same frequency of cell PCI not repeat and preset range in PCI do not repeat.
Specifically, device also includes described in the above embodiment of the present invention：
Target determination module, for determine be not traffic affecting alarm cell and be not coverage cell, And be not that covering abnormal cell is Target cell.
It should be noted that the device of the small mark PCI interference self-optimizing of physics provided in an embodiment of the present invention is Using the device of the method for appeal PCI interference self-optimizings, then the method for above-mentioned PCI interference self-optimizing is all Embodiment is applied to the device, and can reach same or analogous beneficial effect.
The above is the preferred embodiment of the present invention, it is noted that for the common skill of the art For art personnel, on the premise of principle of the present invention is not departed from, some improvements and modifications can also be made, These improvements and modifications also should be regarded as protection scope of the present invention.

Claims (20)

1. a kind of method that Physical Cell Identifier PCI disturbs self-optimizing, it is characterised in that including：
Obtain the degree of correlation between a PCI and the 2nd PCI；First PCI is corresponding with Target cell PCI, the 2nd PCI is PCI corresponding with the homogeneous-frequency adjacent-domain of Target cell；
Measurement report based on the Target cell and the homogeneous-frequency adjacent-domain, backstage switching index and frequency sweep number According to, and the PCI integrated interference coefficients of the Target cell are determined according to the degree of correlation；
If the PCI integrated interferences coefficient of the Target cell is more than a threshold value, determine that the Target cell is PCI high interference cells；
It is the Target cell selection target PCI according to preset rules, and will be corresponding with the Target cell PCI is revised as the target PCI.
2. the method that Physical Cell Identifier PCI according to claim 1 disturbs self-optimizing, its feature exists Include the step of, the degree of correlation between acquisition the first PCI and the 2nd PCI：
Obscure that interference, mould 3 are disturbed, mould 6 is disturbed, mould according to the conflict between a PCI and the 2nd PCI 30 interference, m0 interference and m1 interference, determine the degree of correlation between a PCI and the 2nd PCI.
3. the method that Physical Cell Identifier PCI according to claim 2 disturbs self-optimizing, its feature exists In the formula of the degree of correlation between determination the first PCI and the 2nd PCI is：
Rpci=Km*Rm+Km3*Rm3+Km6*Rm6+Km30*Rm30+Km0*Rm0+Km1*Rm1；
Wherein, the RpciIt is the degree of correlation between a PCI and the 2nd PCI, the Km、Km3、Km6、 Km30、Km0And Km1It is the interference weighted factor between a PCI and the 2nd PCI, the RmFor Interference correlation, the R are obscured in the conflict of the first PCI and the 2nd PCIm3It is a PCI and The interference correlation of mould 3 of two PCI, the Rm6For the mould 6 of a PCI and the 2nd PCI disturbs correlation Degree, the Rm30It is the interference correlation of mould 30 of a PCI and the 2nd PCI, the Rm0It is described The m0 interference correlations of one PCI and the 2nd PCI, the Rm1It is the m1 of a PCI and the 2nd PCI Interference correlation.
4. the method that Physical Cell Identifier PCI according to claim 1 disturbs self-optimizing, its feature exists In the measurement report based on the Target cell and the homogeneous-frequency adjacent-domain, backstage switch index and sweep Frequency evidence, and include the step of the PCI integrated interference coefficients of the Target cell are determined according to the degree of correlation：
Measurement report based on the Target cell and the homogeneous-frequency adjacent-domain, and institute is determined according to the degree of correlation State a PCI interference coefficients of Target cell；
Backstage switching index based on the Target cell and the homogeneous-frequency adjacent-domain, and it is true according to the degree of correlation 2nd PCI interference coefficients of the fixed Target cell；
Frequency sweep data based on the Target cell and the homogeneous-frequency adjacent-domain, and institute is determined according to the degree of correlation State the 3rd PCI interference coefficients of Target cell；
According to first interference coefficient, the second interference coefficient and the 3rd interference coefficient, the target is determined The PCI integrated interference coefficients of cell.
5. the method that Physical Cell Identifier PCI according to claim 4 disturbs self-optimizing, its feature exists In, the measurement report based on the Target cell and the homogeneous-frequency adjacent-domain, and it is true according to the degree of correlation The step of first PCI interference coefficients of the fixed Target cell, includes：
The measurement report of measurement report and homogeneous-frequency adjacent-domain according to Target cell, determines the sampled point of Target cell Number and the sampling number of homogeneous-frequency adjacent-domain；
The sampling number of sampling number and homogeneous-frequency adjacent-domain according to the Target cell, determines Target cell and same The degree of correlation based on the measurement report of frequency adjacent area；
According to Target cell and the degree of correlation based on the measurement report of co-frequency cell, determine Target cell and The level interference coefficient based on measurement report of homogeneous-frequency adjacent-domain；
According to the degree of correlation between the level interference coefficient and a PCI and the 2nd PCI, mesh is determined Mark cell and the interference coefficient based on measurement report of homogeneous-frequency adjacent-domain；
Interference coefficient and the Target cell according to Target cell and homogeneous-frequency adjacent-domain based on measurement report The number of homogeneous-frequency adjacent-domain, determines a PCI interference coefficients of Target cell.
6. the method that Physical Cell Identifier PCI according to claim 4 disturbs self-optimizing, its feature exists In, the backstage switching index based on the Target cell and the homogeneous-frequency adjacent-domain, and it is true according to the degree of correlation The step of 2nd PCI interference coefficients of the fixed Target cell, includes：
The switching index of backstage switching index and homogeneous-frequency adjacent-domain according to Target cell, determines cutting for Target cell Change the switching times of number of times and homogeneous-frequency adjacent-domain；
The switching times of switching times and homogeneous-frequency adjacent-domain according to Target cell, determine Target cell and with frequency neighbour The degree of correlation for switching index based on backstage in area；
The degree of correlation and a PCI according to Target cell and homogeneous-frequency adjacent-domain based on backstage switching index and the The degree of correlation between two PCI, determines the interference system for switching index based on backstage of Target cell and homogeneous-frequency adjacent-domain Number；
Interference coefficient and Target cell according to Target cell and homogeneous-frequency adjacent-domain based on backstage switching index The number of homogeneous-frequency adjacent-domain, determines the 2nd PCI interference coefficients of Target cell.
7. the method that Physical Cell Identifier PCI according to claim 4 disturbs self-optimizing, its feature exists In, the frequency sweep data based on the Target cell and the homogeneous-frequency adjacent-domain, and it is true according to the degree of correlation The step of 3rd PCI interference coefficients of the fixed Target cell, includes：
The frequency sweep data of frequency sweep data and homogeneous-frequency adjacent-domain according to Target cell, determine the sampled point of Target cell Number and the sampling number of homogeneous-frequency adjacent-domain；
The sampling number of sampling number and homogeneous-frequency adjacent-domain according to the Target cell, determines Target cell and same The degree of correlation based on frequency sweep data of frequency adjacent area；
According to Target cell and the degree of correlation based on the frequency sweep data of co-frequency cell, determine Target cell and The level interference coefficient based on frequency sweep data of homogeneous-frequency adjacent-domain；
According to the degree of correlation between the level interference coefficient and a PCI and the 2nd PCI, mesh is determined Mark cell and the interference coefficient based on frequency sweep data of homogeneous-frequency adjacent-domain；
Interference coefficient and the Target cell according to Target cell and homogeneous-frequency adjacent-domain based on frequency sweep data The number of homogeneous-frequency adjacent-domain, determines the 3rd PCI interference coefficients of Target cell.
8. the method that Physical Cell Identifier PCI according to claim 4 disturbs self-optimizing, its feature exists In, it is described according to first interference coefficient, the second interference coefficient and the 3rd interference coefficient, it is determined that described The step of PCI integrated interference coefficients of Target cell, includes：
It is dry according to first interference coefficient, measurement report interference weighted factor, the second interference coefficient, switching Weighted factor, the 3rd interference coefficient and Sweeping nonlinearity weighted factor are disturbed, the PCI synthesis of Target cell is determined Interference coefficient.
9. the method that Physical Cell Identifier PCI according to claim 1 disturbs self-optimizing, its feature exists In, it is described according to preset rules be the Target cell selection target PCI the step of include：
PCI integrated interference coefficients according to other cells in station, carry out the selection Target cell in slave station Target PCI；
If not meeting the target PCI of condition in standing, selected in planned range based on PCI optimizations constraints Target PCI；Wherein, PCI optimizations constraints includes：With station cell PCI do not repeat, any cell with The PCI of homogeneous-frequency adjacent-domain is not repeated, the PCI of the adjacent area of the two neighboring same frequency of cell is not repeated and preset range Interior PCI is not repeated.
10. the method that Physical Cell Identifier PCI according to claim 1 disturbs self-optimizing, its feature exists In also including before the degree of correlation between acquisition the first PCI and the 2nd PCI：
It is determined that be not traffic affecting alarm cell and be not coverage cell and be not covering abnormal cell It is Target cell.
A kind of 11. Physical Cell Identifier PCI disturb the device of self-optimizing, it is characterised in that including：
Acquisition module, for obtaining the degree of correlation between a PCI and the 2nd PCI；First PCI is PCI corresponding with Target cell, the 2nd PCI is PCI corresponding with the homogeneous-frequency adjacent-domain of Target cell；
Coefficient determination module, for the measurement report based on the Target cell and the homogeneous-frequency adjacent-domain, backstage Switching index and frequency sweep data, and the PCI integrated interferences of the Target cell are determined according to the degree of correlation Coefficient；
Interference determining module, if being more than a threshold value for the PCI integrated interferences coefficient of the Target cell, Determine that the Target cell is PCI high interference cells；
Selection modified module, for being the Target cell selection target PCI according to preset rules, and will be with institute State the corresponding PCI of Target cell and be revised as the target PCI.
12. Physical Cell Identifier PCI according to claim 11 disturb the device of self-optimizing, its feature It is that the acquisition module includes：
Acquisition submodule, it is dry for obscuring interference, mould 3 according to the conflict between a PCI and the 2nd PCI Disturb, mould 6 is disturbed, mould 30 is disturbed, m0 interference and m1 are disturbed, and determines a PCI and the 2nd PCI Between the degree of correlation.
13. Physical Cell Identifier PCI according to claim 12 disturb the device of self-optimizing, its feature It is that the formula that the degree of correlation between a PCI and the 2nd PCI is determined in the acquisition submodule is：
Rpci=Km*Rm+Km3*Rm3+Km6*Rm6+Km30*Rm30+Km0*Rm0+Km1*Rm1
Wherein, the RpciIt is the degree of correlation between a PCI and the 2nd PCI, the Km、Km3、Km6、 Km30、Km0And Km1It is the interference weighted factor between a PCI and the 2nd PCI, the RmFor Interference correlation, the R are obscured in the conflict of the first PCI and the 2nd PCIm3It is a PCI and The interference correlation of mould 3 of two PCI, the Rm6For the mould 6 of a PCI and the 2nd PCI disturbs correlation Degree, the Rm30It is the interference correlation of mould 30 of a PCI and the 2nd PCI, the Rm0It is described The m0 interference correlations of one PCI and the 2nd PCI, the Rm1It is the m1 of a PCI and the 2nd PCI Interference correlation.
14. Physical Cell Identifier PCI according to claim 11 disturb the device of self-optimizing, its feature It is that the coefficient determination module includes：
First coefficient determination sub-module, for the measurement report based on the Target cell and the homogeneous-frequency adjacent-domain, And a PCI interference coefficients of the Target cell are determined according to the degree of correlation；
Second coefficient determination sub-module, for the backstage switching based on the Target cell and the homogeneous-frequency adjacent-domain Index, and the 2nd PCI interference coefficients of the Target cell are determined according to the degree of correlation；
3rd coefficient determination sub-module, for the frequency sweep data based on the Target cell and the homogeneous-frequency adjacent-domain, And the 3rd PCI interference coefficients of the Target cell are determined according to the degree of correlation；
4th coefficient determination sub-module, for according to first interference coefficient, the second interference coefficient and Three interference coefficients, determine the PCI integrated interference coefficients of the Target cell.
15. Physical Cell Identifier PCI according to claim 14 disturb the device of self-optimizing, its feature It is that the first coefficient determination sub-module includes：
First sampling unit, for measurement report and the measurement report of homogeneous-frequency adjacent-domain according to Target cell, really The sampling number of the cell that sets the goal and the sampling number of homogeneous-frequency adjacent-domain；
First correlation unit, for sampling number and the sampling number of homogeneous-frequency adjacent-domain according to the Target cell, Determine the degree of correlation based on the measurement report of Target cell and homogeneous-frequency adjacent-domain；
First level disturbs unit, for according to Target cell and co-frequency cell based on the measurement report The degree of correlation, determines the level interference coefficient based on measurement report of Target cell and homogeneous-frequency adjacent-domain；
First interference coefficient unit, for according to the level interference coefficient and a PCI and the 2nd PCI Between the degree of correlation, determine the interference coefficient based on measurement report of Target cell and homogeneous-frequency adjacent-domain；
First factor determination unit, for the interference based on measurement report according to Target cell and homogeneous-frequency adjacent-domain The number of the homogeneous-frequency adjacent-domain of coefficient and the Target cell, determines a PCI interference coefficients of Target cell.
16. Physical Cell Identifier PCI according to claim 14 disturb the device of self-optimizing, its feature It is that the second coefficient determination sub-module includes：
Switch unit, the switching index for switching index and homogeneous-frequency adjacent-domain according to the backstage of Target cell, really The switching times of the cell that sets the goal and the switching times of homogeneous-frequency adjacent-domain；
Second correlation unit, for switching times and the switching times of homogeneous-frequency adjacent-domain according to Target cell, really The cell that sets the goal and the degree of correlation for switching index based on backstage of homogeneous-frequency adjacent-domain；
Second interference coefficient unit, for according to Target cell and homogeneous-frequency adjacent-domain based on backstage switching index The degree of correlation between the degree of correlation and a PCI and the 2nd PCI, determines the base of Target cell and homogeneous-frequency adjacent-domain Switch the interference coefficient of index in backstage；
Second factor determination unit, for according to Target cell and homogeneous-frequency adjacent-domain based on backstage switching index The number of the homogeneous-frequency adjacent-domain of interference coefficient and Target cell, determines the 2nd PCI interference coefficients of Target cell.
17. Physical Cell Identifier PCI according to claim 14 disturb the device of self-optimizing, its feature It is that the 3rd coefficient determination sub-module includes：
Second sampling unit, for frequency sweep data and the frequency sweep data of homogeneous-frequency adjacent-domain according to Target cell, really The sampling number of the cell that sets the goal and the sampling number of homogeneous-frequency adjacent-domain；
Third phase closes unit, for sampling number and the sampling number of homogeneous-frequency adjacent-domain according to the Target cell, Determine the degree of correlation based on frequency sweep data of Target cell and homogeneous-frequency adjacent-domain；
Second electrical level disturbs unit, for according to Target cell and co-frequency cell based on the frequency sweep data The degree of correlation, determines the level interference coefficient based on frequency sweep data of Target cell and homogeneous-frequency adjacent-domain；
3rd interference coefficient unit, for according to the level interference coefficient and a PCI and the 2nd PCI Between the degree of correlation, determine the interference coefficient based on frequency sweep data of Target cell and homogeneous-frequency adjacent-domain；
3rd factor determination unit, for the interference based on frequency sweep data according to Target cell and homogeneous-frequency adjacent-domain The number of the homogeneous-frequency adjacent-domain of coefficient and the Target cell, determines the 3rd PCI interference coefficients of Target cell.
18. Physical Cell Identifier PCI according to claim 14 disturb the device of self-optimizing, its feature It is that the 4th coefficient determination sub-module includes：
4th factor determination unit, for according to first interference coefficient, measurement report interference weighted factor, Second interference coefficient, switching interference weighted factor, the 3rd interference coefficient and Sweeping nonlinearity weighted factor, really The PCI integrated interference coefficients of the cell that sets the goal.
19. Physical Cell Identifier PCI according to claim 11 disturb the device of self-optimizing, its feature It is that the selection modified module includes：
First choice changes submodule, for the PCI integrated interference coefficients according to other cells in station, enters The target PCI of the selection Target cell in row slave station；
Second selection modification submodule, if not meeting the target PCI of condition in for standing, based on PCI optimizations Constraints selection target PCI in planned range；Wherein, PCI optimizations constraints includes：With station cell PCI do not repeat, the PCI of any cell and homogeneous-frequency adjacent-domain is not repeated, the adjacent area of the two neighboring same frequency of cell PCI not repeat and preset range in PCI do not repeat.
20. Physical Cell Identifier PCI according to claim 11 disturb the device of self-optimizing, its feature It is that described device also includes：
Target determination module, for determine be not traffic affecting alarm cell and be not coverage cell, And be not that covering abnormal cell is Target cell.
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