CN105338546B - The localization method and system of problem cells in LTE network - Google Patents
The localization method and system of problem cells in LTE network Download PDFInfo
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- CN105338546B CN105338546B CN201410303064.9A CN201410303064A CN105338546B CN 105338546 B CN105338546 B CN 105338546B CN 201410303064 A CN201410303064 A CN 201410303064A CN 105338546 B CN105338546 B CN 105338546B
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Abstract
The invention discloses the localization methods and system of problem cells in a kind of LTE network, are related to mobile communication technology field.Determine certain cell as the grid of quasi- serving cell as service grid first, the cell grid more serious by same mould probability of interference total amount (i.e. grid of the first community by the same mould probability of interference total amount of other quasi- serving cells and quasi- interfered cell greater than preset value) is judged in these service grids again, grid is interfered as same mould, if being higher than interference threshold with mould interference grid quantity and the accounting for servicing grid, then explanation is for certain cell, in its grid as quasi- serving cell, grid by same mould serious interference is more, it may thereby determine that the cell is that same mould interferes more serious cell, it is located as problem cells.Accurate foundation is provided to go out LTE network disturbance regime for Accurate Analysis, makes it possible to accurately carry out targetedly signal optimization and adjustment to the serious cell of same mould interference overall degree.
Description
Technical field
The present invention relates to mobile communication technology field, in particular to problem cells determines in a kind of LTE long-term evolving network
Position method and system.
Background technique
Under LTE (Long Term Evolution, long term evolution) network, the base station density of base station density ratio 2G, 3G network
Greatly, station spacing is small；There is MPS process planning, PCI planning is unreasonable etc. leads to problems such as same mould interference obvious, influences wireless
Network performance.
With the Large scale construction of LTE network, the same mould interference analysis and optimization of scientific and efficient LTE wireless network are to protect
Demonstrate,prove one ring of key of the construction quality of LTE wireless network.
Therefore, it is necessary to signal interference analytical technology and analysis method new under LTE network be explored, to LTE wireless network
Interference and optimization problem carry out more deep scientific qualitative and accurate quantification analysis, (interfere especially for problem cells
Serious cell) precise positioning furtherd investigate, be to obtain the basis of more accurately optimal solution, directly determine
LTE network signal and performance fundamentally improve the overall performance of LTE wireless network.
Summary of the invention
In view of the above problems, the embodiment of the present invention provides a kind of localization method of problem cells in LTE long-term evolving network
And system, a kind of new problem cell quantitative analysis tech is proposed, more accurate, conjunction is carried out to network signal so as to realize
The overall performance of LTE wireless network is fundamentally improved in the adjustment of reason.
The embodiment of the present invention adopts the technical scheme that
One embodiment of the invention provides a kind of localization method of problem cells in LTE long-term evolving network, the side
Method includes:
For each detection grid, multiple Reference Signal Received Power are obtained；
Determine that the corresponding quasi- serving cell of each detection grid and standard are dry according to the multiple Reference Signal Received Power
Disturb cell；
Using first community as the grid of quasi- serving cell as the service grid of first community；The first community be
Serving cell surely at the detection grid；
Judge in each service grid, first community is total by the same mould probability of interference of other quasi- serving cells and quasi- interfered cell
Amount is greater than the grid of preset value, and the same mould as first community interferes grid；
For each cell, judge whether the accounting of same mould interference grid quantity and service grid quantity is greater than interference threshold；
The cell for determining that the accounting is greater than interference threshold is problem cells, and cell carries out optimization and the tune of signal according to the problems identified
It is whole.
It is described according to the multiple Reference Signal Received Power determine the corresponding quasi- serving cell of each detection grid and
Quasi- interfered cell includes:
The average value for calculating each cell Reference Signal Received Power at detection grid, as each cell at detection grid
Average reference signal receive power；
It calculates each cell average reference signal at detection grid and receives power and maximum average reference signal reception function
The difference of rate；Determine that cell corresponding to average reference signal reception power of the difference less than first threshold takes subject to determining
Business cell determines that the difference is less than second threshold and is greater than corresponding to the average reference signal reception power of the first threshold
Cell determine subject to interfered cell.
In each service grid of judgement, first community is interfered general by other quasi- serving cells and the same mould of quasi- interfered cell
Rate total amount is greater than the grid of preset value, and the same mould interference grid as first community includes:
At each service grid, judge between first community and other quasi- serving cells and quasi- interfered cell with the presence or absence of same
Mould interference relationships；The same mould interference relationships include same physical-layer cell identifier PCI interference, PCI there are the interference of 3 relationship of mould,
There are the interference of 30 relationship of mould, PCI, there are the interference of 50 relationship of mould, PCI, there are auxiliary same there are the interference of 6 relationship of mould, PCI by PCI
Walking interference and PCI of the signal SSS with m0 relationship, there are SSS with the interference of m1 relationship；
First community is calculated by the same mould probability of interference that there is the second community with mould interference relationships therewith；Described second is small
Area interfered cell for the other quasi- serving cells in addition to first community or surely；
First community is calculated by other quasi- serving cells and quasi- interfered cell with the sum of mould probability of interference, obtains first community
By other quasi- serving cells and the same mould probability of interference total amount of quasi- interfered cell；
First community is greater than preset value by the same mould probability of interference total amount of other quasi- serving cells and quasi- interfered cell
Grid is serviced, the same mould as first community interferes grid.
With the presence or absence of with mould interference relationships between the judgement first community and other quasi- serving cells and quasi- interfered cell
Include:
Whether the PCI of the PCI and first community that judge other quasi- serving cells and quasi- interfered cell are identical, if they are the same then really
Fixed and first community exists with PCI interference relationships；
Judge that the PCI of other quasi- serving cells and quasi- interfered cell takes the result of 3 modulus and the PCI of first community to 3
Whether the result of mould is identical, then determines that there are the interference of 3 relationship of PCI mould with first community if they are the same；
Judge that the PCI of other quasi- serving cells and quasi- interfered cell takes the result of 6 modulus and the PCI of first community to 6
Whether the result of mould is identical, then determines that there are the interference of 6 relationship of PCI mould with first community if they are the same；
Judge the PCI of other quasi- serving cells and quasi- interfered cell to the result of 30 modulus and the PCI of first community to 30
Whether the result of modulus is identical, then determines that there are the interference of 30 relationship of PCI mould with first community if they are the same；
Judge the PCI of other quasi- serving cells and quasi- interfered cell to the result of 50 modulus and the PCI of first community to 50
Whether the result of modulus is identical, then determines that there are the interference of 50 relationship of PCI mould with first community if they are the same；
The PCI of the m0 and first community that judge the PCI secondary synchronization signal SSS of other quasi- serving cells and quasi- interfered cell are auxiliary
Whether the m0 of synchronization signal SSS is identical, then determines that there are PCI secondary synchronization signal SSS with m0 relationship with first community if they are the same
Interference；
The PCI of the m1 and first community that judge the PCI secondary synchronization signal SSS of other quasi- serving cells and quasi- interfered cell are auxiliary
Whether the m1 of synchronization signal SSS is identical, then determines that there are PCI secondary synchronization signal SSS with m1 relationship with first community if they are the same
Interference.
It calculates in detection grid (logp,latp) at first community A to therewith exist with mould interference relationships second community B
Same mould probability of interference CS AB(logp,latp) method are as follows:
Wherein, CA(logp,latp) it is cell A in detection grid (logp,latp) at average reference signal receive power,
IBIt is cell B in detection grid (logp,latp) at average reference signal receive power, logpTo detect grid longitude；
latpTo detect grid dimension values.
Specifically multiple reference signals are obtained from LTE frequency sweep data, LTE drive test data and/or MR measurement report data to connect
Receive power.
In addition, the embodiment of the invention also provides a kind of positioning system of problem cells in LTE long-term evolving network, it is described
System includes:
Module is obtained, for being directed to each detection grid, obtains multiple Reference Signal Received Power；
Cell type determining module, for determining each detection grid pair according to the multiple Reference Signal Received Power
The quasi- serving cell answered and quasi- interfered cell；
Service grid determining module, for using first community as the grid of quasi- serving cell as the service of first community
Grid；The first community is the serving cell surely at the detection grid；
Interfere grid determining module with mould, for judging in each service grid, first community by other quasi- serving cells and
The same mould probability of interference total amount of quasi- interfered cell is greater than the grid of preset value, and the same mould as first community interferes grid；
Problem cells positioning and analysis module judge same mould interference grid quantity and service grid for being directed to each cell
Whether the accounting of quantity is greater than interference threshold；The cell for determining that the accounting is greater than interference threshold is problem cells, according to determination
The problem of cell carry out signal optimization and adjustment.
The cell type determining module includes:
Average reference signal receives power calculation unit, receives function for calculating each cell reference signal at detection grid
The average value of rate receives power as average reference signal of each cell at detection grid；
Cell type computing unit is used to calculate each cell average reference signal at detection grid and receives power and maximum
Average reference signal receive power difference；Determine that the difference is less than the average reference signal reception power institute of first threshold
Serving cell subject to corresponding cell is determining determines that the difference is less than second threshold and is greater than the average ginseng of the first threshold
Examine interfered cell subject to the determination of cell corresponding to signal reception power.
The same mould interference grid determining module includes:
With mould interference type judging unit, for judging first community and other quasi- serving cells at each service grid
And with the presence or absence of with mould interference relationships between quasi- interfered cell；The same mould interference relationships include same physical-layer cell identifier PCI
There are the interference of 6 relationship of mould, PCI, there are the interference of 30 relationship of mould, PCI to exist there are the interference of 3 relationship of mould, PCI by interference, PCI
There are SSS with the interference of m1 relationship for interference and PCI of the interference, PCI of 50 relationship of mould there are secondary synchronization signal SSS with m0 relationship；
With mould probability of interference computing unit, for calculating first community by therewith in the presence of the second community with mould interference relationships
Same mould probability of interference；Second community interfered cell for the other quasi- serving cells in addition to first community or surely；
With mould probability of interference total amount calculating unit, for calculating first community by other quasi- serving cells and quasi- interfered cell
With the sum of mould probability of interference, first community is obtained by other quasi- serving cells and the same mould probability of interference total amount of quasi- interfered cell；
With mould interfere grid determination unit, for by first community by other quasi- serving cells and the same mould of quasi- interfered cell
Probability of interference total amount is greater than the service grid of preset value, and the same mould as first community interferes grid.
The same mould interference type judging unit includes:
With PCI interference relationships judgment sub-unit, for judging the PCI and first of other quasi- serving cells and quasi- interfered cell
Whether the PCI of cell is identical, then determining if they are the same to exist with first community with PCI interference relationships；
3 interference relationships judgment sub-unit of PCI mould, for judging that the PCI of other quasi- serving cells and quasi- interfered cell takes to 3
Whether the result of mould and the PCI of first community are identical to the result of 3 modulus, then determine that there are PCI moulds 3 with first community if they are the same
The interference of relationship；
6 interference relationships judgment sub-unit of PCI mould, for judging that the PCI of other quasi- serving cells and quasi- interfered cell takes to 6
Whether the result of mould and the PCI of first community are identical to the result of 6 modulus, then determine that there are PCI moulds 6 with first community if they are the same
The interference of relationship；
30 interference relationships judgment sub-unit of PCI mould, for judging the PCI of other quasi- serving cells and quasi- interfered cell to 30
Whether the result of modulus and the PCI of first community are identical to the result of 30 modulus, then determine that there are PCI with first community if they are the same
The interference of 30 relationship of mould；
50 interference relationships judgment sub-unit of PCI mould, for judging the PCI of other quasi- serving cells and quasi- interfered cell to 50
Whether the result of modulus and the PCI of first community are identical to the result of 50 modulus, then determine that there are PCI with first community if they are the same
The interference of 50 relationship of mould；
The SSS of PCI is with m0 interference relationships judgment sub-unit, for judging other quasi- serving cells and quasi- interfered cell
Whether the m0 of the PCI secondary synchronization signal SSS of the m0 and first community of PCI secondary synchronization signal SSS is identical, then determines and the if they are the same
There are PCI secondary synchronization signal SSS with the interference of m0 relationship for one cell；
The SSS of PCI is with m1 interference relationships judgment sub-unit, for judging other quasi- serving cells and quasi- interfered cell
Whether the m1 of the PCI secondary synchronization signal SSS of the m1 and first community of PCI secondary synchronization signal SSS is identical, then determines and the if they are the same
There are PCI secondary synchronization signal SSS with the interference of m1 relationship for one cell；
The same mould probability of interference computing unit is calculated in detection grid (logp,latp) at first community A to existing therewith
With the same mould probability of interference C of the second community B of mould interference relationshipsS AB(logp,latp) formula are as follows:
Wherein, CA(logp,latp) it is cell A in detection grid (logp,latp) at average reference signal receive power,
IBIt is cell B in detection grid (logp,latp) at average reference signal receive power, logpTo detect grid longitude；
latpTo detect grid dimension values.
As it can be seen that the embodiment of the present invention provides the localization method and system of problem cells in a kind of LTE long-term evolving network, it is first
First determine certain cell as quasi- serving cell grid as service grid, then these service grids in judge the cell by
With the more serious grid of mould probability of interference total amount, (i.e. first community is dry by other quasi- serving cells and the same mould of quasi- interfered cell
Disturb the grid that probability total amount is greater than preset value), grid is interfered as same mould, if interfering grid quantity with mould and servicing accounting for for grid
Than being higher than interference threshold, then explanation is for certain cell, in the grid as quasi- serving cell, by same mould serious interference
Grid it is more, may thereby determine that the cell is that same mould interferes more serious cell, that is, be located as problem cells.Root
According to scheme described in the embodiment of the present invention, can precise quantification orientation problem cell, to go out LTE network interference shape for Accurate Analysis
Condition provides accurate foundation, makes it possible to accurately carry out targetedly signal to the serious cell of same mould interference overall degree to optimize
And adjustment.More deep scientific qualitative and accurate quantification analytical plan is provided to the interference of LTE wireless network and optimization problem,
And more accurately optimal solution, the analysis ability of LTE wireless network is fundamentally improved, and then it is whole to promote network
Body performance.
Detailed description of the invention
Fig. 1 is the localization method flow chart of problem cells in a kind of LTE long-term evolving network provided in an embodiment of the present invention；
Fig. 2 is mapping function schematic diagram of the C/I provided in an embodiment of the present invention to probability of interference；
Fig. 3 is the positioning system structure frame of problem cells in a kind of LTE long-term evolving network provided in an embodiment of the present invention
Figure.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
Referring to Fig. 1, the embodiment of the present invention provides a kind of localization method of problem cells in LTE long-term evolving network, specifically
Include:
S101: it is directed to each detection grid, obtains multiple Reference Signal Received Power.
In LTE (Long Term Evolution, long term evolution) network, the Data Detections sides such as frequency sweep, drive test are used
Formula, for each detection grid, available multiple Reference Signal Received Power.In practical application, it can be obtained from multiple channel
Take Reference Signal Received Power.It preferably, specifically can be from LTE frequency sweep data, LTE drive test data and/or MR
Multiple Reference Signal Received Power are obtained in (Measurement Report, measurement report) data.
LTE drive test provides analysis indexes abundant for the service feature of wireless network, and LTE frequency sweep is then to the nothing of network
Linearly can be carried out the comprehensive measurement being fully accurate, the integrated analysis of drive test frequency sweep for promoted network precision of analysis and
Efficiency is most important.
It should be noted that for some detect grid for, around have several cells, pass through drive test or frequency sweep etc.
It is available to arrive Reference Signal Received Power of multiple cell at the detection grid in detection data.For multiple detections
For period, some cell may detect multiple Reference Signal Received Power at the detection grid, under normal circumstances, excellent
A kind of scheme of choosing is to need multiple Reference Signal Received Power of the cell calculating average value, to further increase data
The accuracy of operation.
Preferably, this step further includes to LTE frequency sweep data, LTE drive test data and/or MR (Measurement
Report, measurement report) multiple Reference Signal Received Power are obtained in data carries out pretreated step, specifically it may is that
(1) give up hash: data incomplete for frequency sweep data, while giving up the number for lacking longitude and latitude, PCI
According to；
(2) give up low-level data: since the sensitivity of sweep generator is higher, the signal lower than -120dBm can be connect
It receives, and these data do not parse for mobile phone, data do not have effect to analysis, therefore during importing
It gives and removes；
(3) frequency sweep point is corresponded into cell: be first according in frequency sweep data frequency point and PCI determine cell.If root
It is not unique according to the cell that frequency point and PCI are determined, then by distance after passing through calculation of longitude & latitude frequency sweep point to the distance of cell
Serving cell of the nearest cell as the frequency sweep point；
(4) the RSRP level mean value of the identical same cell of longitude and latitude is taken.Etc..
S102: according to the multiple Reference Signal Received Power determine the corresponding quasi- serving cell of each detection grid and
Quasi- interfered cell.
As a preferred embodiment, described that each detection grid pair is determined according to the multiple Reference Signal Received Power
The quasi- serving cell and quasi- interfered cell answered include:
The average value for calculating each cell Reference Signal Received Power at detection grid, as each cell at detection grid
Average reference signal receive power；
It calculates each cell average reference signal at detection grid and receives power and maximum average reference signal reception function
The difference of rate；Determine that cell corresponding to average reference signal reception power of the difference less than first threshold takes subject to determining
Business cell determines that the difference is less than second threshold and is greater than corresponding to the average reference signal reception power of the first threshold
Cell determine subject to interfered cell.
That is, some cell may detect multiple Reference Signal Received Power at certain detection grid, firstly,
It calculates the multiple Reference Signal Received Power detected at the detection grid and calculates average value according to cell, even in certain detection grid
At lattice, around there are 4 cells, respectively A cell, B cell, C cell, D cell.Multiple ginsengs of A, B, C, D cell are detected altogether
Signal reception power is examined, firstly, calculate at the detection grid, for the average value of multiple Reference Signal Received Power of A cell,
It obtains average reference signal of the A cell at detection grid and receives power PA；For multiple Reference Signal Received Power of B cell
Average value, obtain B cell detection grid at average reference signal receive power PB；For the multiple with reference to letter of C cell
Number receive power average value, obtain C cell detection grid at average reference signal receive power PC；For D cell
The average value of multiple Reference Signal Received Power obtains average reference signal of the D cell at detection grid and receives power PD。
It is received in power in aforementioned four average reference signal, maximum value is denoted as Pmax。
It then calculates each cell average reference signal at detection grid and receives power and the reception of maximum average reference signal
The difference of power, specifically, calculating separately Pmax-PA、Pmax-PB、Pmax-PC、Pmax-PD.Determine that the difference is less than first threshold
Average reference signal receive power corresponding to cell determine subject to serving cell, that is to say, that above-mentioned difference is in the first threshold
Serving cell subject to cell corresponding to average reference signal reception power in value (such as 6db) is determining, the quasi- service are small
Area refers at the detection grid, may become the cell of serving cell.Above-mentioned difference is less than second threshold (such as 12db)
And be greater than the average reference signal in first threshold (such as 6db) and receive interfered cell subject to the determination of cell corresponding to power,
The quasi- interfered cell refers at the detection grid, may become the cell of interfered cell.And reference signal is received
Power is less than the cell that maximum Reference Signal Received Power is more than second threshold (such as 12db), it is generally recognized that the detection grid
Interference it is sufficiently small, do not constitute interference signal, for convenience of calculation, can ignore.
S103: using first community as the grid of quasi- serving cell as the service grid of first community；Described first is small
Area is the serving cell surely at the detection grid.
This step is denoted as the service grid of the cell for determining using certain cell as the grid of quasi- serving cell.
S104: judging in each service grid, and first community is interfered by other quasi- serving cells and the same mould of quasi- interfered cell
Probability total amount is greater than the grid of preset value, and the same mould as first community interferes grid.
This step is used to judge that first community is more serious by same mould probability of interference total amount in these service grids
Grid (i.e. grid of the first community by the same mould probability of interference total amount of other quasi- serving cells and quasi- interfered cell greater than preset value
Lattice), grid is interfered as same mould.
In LTE system, since PCI be used to determine the frequency domain position of the signals such as PSS, RS and PCFICH in cell, because
Following general principle is considered as when this planning:
(1) identical PCI is avoided to distribute to adjacent area；
(2) the identical PCI of mould 3 is avoided to distribute to adjacent area, the identical bring access of the PSS sequence to evade neighboring community is same
Step interference and synchronization delayed time；
(3) the identical PCI of mould 6 is avoided to distribute to adjacent area, to evade the time-frequency domain position phase of neighboring community reference signal CRS
It is interfered between bring cell reference signals；
(4) the identical PCI of mould 30 is avoided to distribute to adjacent area, it is identical with SRS with the DM RS frequency domain position for evading neighboring community
The interference of bring uplink detection signal；
(5) the identical PCI of mould 50 is avoided to distribute to adjacent area, the PCFICH frequency domain position to evade neighboring community is identical to be brought
Minizone PCFICH signal interference.
(6) the identical m0/m1 of SSS signal is avoided to distribute to adjacent area, it is same to evade the identical phase shift bring SSS signal of SSS
Step interference and synchronization delayed time.
PCI is as follows with the basic ideas that mould interference problem is analyzed: existing according to being incorporated in during drive test and frequency sweep with frequency
The minizone of Power Overlap covering, the reception power ratio of different test point different community reference signal CRS, signal quality (such as RS-
CINR, RSRQ) and the Mod3/Mod6/Mod30/Mod50 of PCI it is whether identical, i.e., with the presence or absence of prominent with stamping, determine cell
Between with the presence or absence of PCI with mould interfere.
Preferably, judge in each service grid, first community is same by other quasi- serving cells and quasi- interfered cell
Mould probability of interference total amount is greater than the grid of preset value, and the same mould interference grid as first community includes following sub-step:
Sub-step 1: at each service grid, judge be between first community and other quasi- serving cells and quasi- interfered cell
It is no to exist with mould interference relationships.
Specifically, each similar mould interference relationships include same physical-layer cell identifier PCI interference, there are 3 relationships of mould by PCI
Interference, there are the interference of 30 relationship of mould, PCI, there are the interference of 50 relationship of mould, PCI to deposit there are the interference of 6 relationship of mould, PCI by PCI
In interference of the secondary synchronization signal SSS with m0 relationship and PCI, there are SSS with the interference of m1 relationship；Etc..
More serious interference is wherein being appeared to be at present with mould interference due to above-mentioned, in order to improve computational efficiency, as
Preferably, in the embodiment of the present invention, only consider above-mentioned wherein with mould interference.But in practical application, it can be originated from according to interference
Row setting, herein without limitation.
It should be noted that 504 independent physical-layer cell identifier PCI, these PCI quilts are defined in LTE system altogether
It is divided into 168 groups, every group respectively corresponds different sets of numbers(value range is 0~167).Contain 3 in each group again only
One identification code(value range is 0~2, respectively corresponds ID in different groups).So in the presence ofIt is right
It should be related to.
TD-LTE system efficiently controls co-channel interference using mechanism such as interference randomization, interference elimination, interference coordinations.
In LTE system, many physical channel/signal such as PSS/SSS, PCFICH etc., frequency domain position is all related with PCI at that time, therefore
The reasonability of PCI planning is critically important.If PCI planning is bad, more serious neighboring interval interference will cause, to reduce cell
Handling capacity increases propagation delay time etc..
From the point of view of physical layer, PCI (physical-layer Cell identity) identifies the physical-layer cell mark of cell
Know, is made of, can be obtained by simple operation primary synchronization signal (PSS) and secondary synchronization signal (SSS).Formula is as follows: PCI
=PSS+3*SSS, wherein PSS value is 0...2 (actually 3 kinds of difference PSS sequences), and SSS value is (actually 168 kinds of 0...167
Different SSS sequences), it is that there are 504 PCI from 0...503, therefore in physical layer using the range that above-mentioned formula can obtain PCI.
In fact, PCI can be interpreted as scrambling code, it is right just as downlink scrambling code is used to distinguish sector in a wcdma system
Data to be sent are scrambled, so that terminal can distinguish different sectors.
Same mould interference described here, SameMode Interference refers in TLE communication system, since PCI is same
Wireless network signal between neighboring community caused by stamping is prominent interferes with each other.
Specifically, with the presence or absence of dry with mould between the judgement first community and other quasi- serving cells and quasi- interfered cell
The relationship of disturbing includes:
Whether the PCI of the PCI and first community that judge other quasi- serving cells and quasi- interfered cell are identical, if they are the same then really
Fixed and first community exists with PCI interference relationships；
Judge that the PCI of other quasi- serving cells and quasi- interfered cell takes the result of 3 modulus and the PCI of first community to 3
Whether the result of mould is identical, then determines that there are the interference of 3 relationship of PCI mould with first community if they are the same；
Judge that the PCI of other quasi- serving cells and quasi- interfered cell takes the result of 6 modulus and the PCI of first community to 6
Whether the result of mould is identical, then determines that there are the interference of 6 relationship of PCI mould with first community if they are the same；
Judge the PCI of other quasi- serving cells and quasi- interfered cell to the result of 30 modulus and the PCI of first community to 30
Whether the result of modulus is identical, then determines that there are the interference of 30 relationship of PCI mould with first community if they are the same；
Judge the PCI of other quasi- serving cells and quasi- interfered cell to the result of 50 modulus and the PCI of first community to 50
Whether the result of modulus is identical, then determines that there are the interference of 50 relationship of PCI mould with first community if they are the same；
The PCI of the m0 and first community that judge the PCI secondary synchronization signal SSS of other quasi- serving cells and quasi- interfered cell are auxiliary
Whether the m0 of synchronization signal SSS is identical, then determines that there are PCI secondary synchronization signal SSS with m0 relationship with first community if they are the same
Interference；
The PCI of the m1 and first community that judge the PCI secondary synchronization signal SSS of other quasi- serving cells and quasi- interfered cell are auxiliary
Whether the m1 of synchronization signal SSS is identical, then determines that there are PCI secondary synchronization signal SSS with m1 relationship with first community if they are the same
Interference.
For example, including { B ... in the presence of other quasi- serving cells with mould interference relationships with quasi- serving cell A through above-mentioned judgement
C }, include { D, E ... T } in the presence of other quasi- interfered cells with mould interference relationships with quasi- serving cell A.
Sub-step 2: first community is calculated by the same mould probability of interference that there is the second community with mould interference relationships therewith；Institute
Stating second community is other quasi- serving cells in addition to first community or interfered cell surely.
Continue to use above-mentioned example: through above-mentioned judgement, at detection grid, with first community A exist with mould interference relationships its
Its quasi- serving cell includes { B ... C }, includes { D, E ... in the presence of other quasi- interfered cells with mould interference relationships with first community A
T}.Then, first community A is calculated in detection grid (logp,latp) at it is small to the other quasi- services existed therewith with mould interference relationships
The same mould probability of interference C of area and quasi- interfered cell (by taking second community B as an example)S AB(logp,latp) a kind of method may is that
In detection grid (logp,latp) at cell A to the calculation method principle phase of the same mould probability of interference of other cells
Together, it no longer repeats one by one.
Wherein, CA(logp,latp) it is cell A in detection grid (logp,latp) at average reference signal receive power,
IBFor cell B (logp,latp) in detection grid (logp,latp) at average reference signal receive power, logpTo detect grid
Lattice longitude；latpTo detect grid dimension values.
For the calculation method of probability of interference, it is described in detail as follows:
In specified longitude and latitude frequency sweep point (logp,latp), it is assumed that the serving cell is CELLi, Ci(logp,latp) and Ij
(logp,latp) be respectively sweep generator in the point to serving cell CELLiWith interfered cell CELLjReference signal transmission power electricity
Flat measured value RSRP, then the co-channel interference probability C of the frequency sweep pointS ij(logp,latp) algorithm is as follows:
Wherein:
FER (C/I) is C/I to probability of interference nonlinear mapping function, as shown in Fig. 2, FER (C/I) ∈ (0,1), FER
(C/I) closer to 1, show that the probability of interference of two minizones is bigger.
Preferably, it in the embodiment of the present invention, is implemented by the way of probability of interference matrix.Specifically,
Record has detection grid ID, latitude and longitude information, serving cell ID, interfered cell ID, each similar mould interference in probability of interference matrix
In the presence of mark and detection grid at serving cell to information such as the co-channel interference probability of interfered cell.Probability of interference matrix
A kind of specific implementation form can be form shown in table 1:
1 probability of interference matrix of table
Wherein, serving cell ID can be obtained by CellID=eNodeBID*256+SectorID.
S_PCI: serving cell PCI.
Interfered cell ID can be obtained by CellID=eNodeBID*256+SectorID.
I_PCI: interfered cell PCI.
In practical application, through determining, the PCI relationship of serving cell and interfered cell: for identical PCI, with mould 3/6/30/
50, SSS same m0, SSS are the same as one or more of m1 kind PCI relationship interference.According to judgement as a result, in the same mould of probability of interference matrix
It interferes at mark, does following mark and (exist and be denoted as 1, there is no be denoted as 0).
1: two adjacent cell is interfered with PCI, CoPCI=1, otherwise CoPCI=0；
2: two adjacent cell PCI are there are the interference of mould 3, MOD3=1, otherwise MOD3=0；
3: two adjacent cell PCI are there are the interference of mould 6, MOD6=1, otherwise MOD6=0；
4: two adjacent cell PCI are there are the interference of mould 30, MOD30=1, otherwise MOD30=0；
5: two adjacent cell PCI are there are the interference of mould 50, MOD50=1, otherwise MOD50=0；
There are SSS to interfere with m0 by 6: two adjacent cells (being not belonging to cell in same PCI group) PCI, SSSm0=1, otherwise
SSSm0=0；
There are SSS to interfere with m1 by 7: two adjacent cells (being not belonging to cell in same PCI group) PCI, SSSm1=1, otherwise
SSSm1=0.
The computation grid interference value interfered by different type with mould according to the different each grids of service coverage cell
Total amount carrys out quantificational description specified services cell with this and is disturbed degree in the grid.
Sub-step 3: first community is calculated by other quasi- serving cells and quasi- interfered cell with the sum of mould probability of interference, is obtained
First community is by other quasi- serving cells and the same mould probability of interference total amount of quasi- interfered cell.
It continues to use above-mentioned example: at certain grid, there are other quasi- serving cell packets with mould interference relationships with first community A
{ B ... C } is included, includes { D, E ... T } in the presence of other quasi- interfered cells with mould interference relationships with first community A.
Then grid (logp,latp) at first community by other quasi- serving cells and quasi- interfered cell with mould probability of interference it
With:
CS AB(logp,latp)+…+CS AC(logp,latp)+CS AD(logp,latp)+CS AE(logp,latp)+…+CS AT
(logp,latp)
Sub-step 4: first community is greater than by the same mould probability of interference total amount of other quasi- serving cells and quasi- interfered cell
The service grid of preset value, the same mould as first community interfere grid.
The same mould probability of interference total amount that certain cell is subject to is bigger, then the interference for illustrating that the cell is subject to is more serious.
Preset value can be according to different application scene setting, and the preset value is lower, then illustrates current application scene to interference
Degree requires stringenter, for example it is 0.1 that the preset value, which can be set,.
S105: being directed to each cell, judges whether the accounting of same mould interference grid quantity and service grid quantity is greater than interference
Threshold value, the cell for determining that the accounting is greater than interference threshold is problem cells, and cell carries out the excellent of signal according to the problems identified
Change and adjusts.
For example, the grid quantity as quasi- serving cell has 500 for cell A, in 500 grid
In lattice, cell A is 200 by the grid quantity that same mould probability of interference total amount is greater than preset value (such as 0.1), then calculates 200/
Whether 500 be greater than interference threshold (such as 15%), if more than, it is determined that cell A is problem cells, otherwise determines that cell A is not
Problem cells.
Certain cell as quasi- serving cell grid as service grid, then these service grids in judge the cell by
To the more serious grid of same mould probability of interference total amount, (i.e. first community is by other quasi- serving cells and the same mould of quasi- interfered cell
Probability of interference total amount is greater than the grid of preset value), grid is interfered as same mould, if with mould interference grid quantity and servicing grid
Accounting is higher than interference threshold, then explanation is for certain cell, tight by the interference of same mould in the grid as quasi- serving cell
The grid of weight is more, may thereby determine that the cell is that same mould interferes more serious cell, that is, is located as problem cells.
So as to the optimization and adjustment targetedly to problem cells progress signal, for example PCI is more reasonably planned etc..
PCI in accurate quantification analysis and positioning LTE wireless network is same in LTE wireless network with mould interference problem
The optimization of mould interference provides scientific basis.Optimize to be provided the whole or local PCI of optimization with mould serious interference cell cluster by PCI
Scheme.
As it can be seen that the embodiment of the present invention provides a kind of localization method of problem cells in LTE long-term evolving network, it is first determined
Certain cell judges that the cell is dry by same mould as service grid, then in these service grids as the grid of quasi- serving cell
Disturbing the more serious grid of probability total amount, (i.e. first community is by other quasi- serving cells and the same mould probability of interference of quasi- interfered cell
Total amount is greater than the grid of preset value), grid is interfered as same mould, if being higher than with mould interference grid quantity with the accounting for servicing grid
Interference threshold then illustrates the grid for certain cell, in the grid as quasi- serving cell, by same mould serious interference
It is more, it may thereby determine that the cell is that same mould interferes more serious cell, that is, be located as problem cells.According to this hair
Scheme described in bright embodiment, can precise quantification orientation problem cell, provided to go out LTE network disturbance regime for Accurate Analysis
Accurate foundation makes it possible to accurately carry out targetedly signal optimization to the serious cell of same mould interference overall degree and adjust
It is whole.More deep scientific qualitative and accurate quantification analytical plan is provided to the interference of LTE wireless network and optimization problem, and more
Accurately optimal solution fundamentally improves the analysis ability of LTE wireless network, and then promotes network globality
Energy.
Shown in Figure 3, the embodiment of the invention also provides a kind of positioning systems of problem cells in LTE long-term evolving network
System, the system comprises:
Module 301 is obtained, for being directed to each detection grid, obtains multiple Reference Signal Received Power.
Cell type determining module 302, for determining each detection grid according to the multiple Reference Signal Received Power
The corresponding quasi- serving cell of lattice and quasi- interfered cell.
Service grid determining module 303, for using first community as the grid of quasi- serving cell as first community
Service grid；The first community is the serving cell surely at the detection grid.
Grid determining module 304 is interfered with mould, for judging in each service grid, first community is by other quasi- serving cells
And the same mould probability of interference total amount of quasi- interfered cell is greater than the grid of preset value, the same mould as first community interferes grid.
Problem cells positioning and analysis module 305 judge same mould interference grid quantity and service grid for being directed to each cell
Whether the accounting of lattice quantity is greater than interference threshold；The cell for determining that the accounting is greater than interference threshold is problem cells, according to true
Fixed problem cell carries out the optimization and adjustment of signal.
Specifically, the cell type determining module includes:
Average reference signal receives power calculation unit, receives function for calculating each cell reference signal at detection grid
The average value of rate receives power as average reference signal of each cell at detection grid；
Cell type computing unit is used to calculate each cell average reference signal at detection grid and receives power and maximum
Average reference signal receive power difference；Determine that the difference is less than the average reference signal reception power institute of first threshold
Serving cell subject to corresponding cell is determining determines that the difference is less than second threshold and is greater than the average ginseng of the first threshold
Examine interfered cell subject to the determination of cell corresponding to signal reception power.
Preferably, the same mould interference grid determining module includes:
With mould interference type judging unit, for judging first community and other quasi- serving cells at each service grid
And with the presence or absence of with mould interference relationships between quasi- interfered cell；The same mould interference relationships include same physical-layer cell identifier PCI
There are the interference of 6 relationship of mould, PCI, there are the interference of 30 relationship of mould, PCI to exist there are the interference of 3 relationship of mould, PCI by interference, PCI
There are SSS with the interference of m1 relationship for interference and PCI of the interference, PCI of 50 relationship of mould there are secondary synchronization signal SSS with m0 relationship；
With mould probability of interference computing unit, for calculating first community by therewith in the presence of the second community with mould interference relationships
Same mould probability of interference；Second community interfered cell for the other quasi- serving cells in addition to first community or surely；
With mould probability of interference total amount calculating unit, for calculating first community by other quasi- serving cells and quasi- interfered cell
With the sum of mould probability of interference, first community is obtained by other quasi- serving cells and the same mould probability of interference total amount of quasi- interfered cell；
With mould interfere grid determination unit, for by first community by other quasi- serving cells and the same mould of quasi- interfered cell
Probability of interference total amount is greater than the service grid of preset value, and the same mould as first community interferes grid.
Further, the same mould interference type judging unit includes:
With PCI interference relationships judgment sub-unit, for judging the PCI and first of other quasi- serving cells and quasi- interfered cell
Whether the PCI of cell is identical, then determining if they are the same to exist with first community with PCI interference relationships；
3 interference relationships judgment sub-unit of PCI mould, for judging that the PCI of other quasi- serving cells and quasi- interfered cell takes to 3
Whether the result of mould and the PCI of first community are identical to the result of 3 modulus, then determine that there are PCI moulds 3 with first community if they are the same
The interference of relationship；
6 interference relationships judgment sub-unit of PCI mould, for judging that the PCI of other quasi- serving cells and quasi- interfered cell takes to 6
Whether the result of mould and the PCI of first community are identical to the result of 6 modulus, then determine that there are PCI moulds 6 with first community if they are the same
The interference of relationship；
30 interference relationships judgment sub-unit of PCI mould, for judging the PCI of other quasi- serving cells and quasi- interfered cell to 30
Whether the result of modulus and the PCI of first community are identical to the result of 30 modulus, then determine that there are PCI with first community if they are the same
The interference of 30 relationship of mould；
50 interference relationships judgment sub-unit of PCI mould, for judging the PCI of other quasi- serving cells and quasi- interfered cell to 50
Whether the result of modulus and the PCI of first community are identical to the result of 50 modulus, then determine that there are PCI with first community if they are the same
The interference of 50 relationship of mould；
The SSS of PCI is with m0 interference relationships judgment sub-unit, for judging other quasi- serving cells and quasi- interfered cell
Whether the m0 of the PCI secondary synchronization signal SSS of the m0 and first community of PCI secondary synchronization signal SSS is identical, then determines and the if they are the same
There are PCI secondary synchronization signal SSS with the interference of m0 relationship for one cell；
The SSS of PCI is with m1 interference relationships judgment sub-unit, for judging other quasi- serving cells and quasi- interfered cell
Whether the m1 of the PCI secondary synchronization signal SSS of the m1 and first community of PCI secondary synchronization signal SSS is identical, then determines and the if they are the same
There are PCI secondary synchronization signal SSS with the interference of m1 relationship for one cell.
Preferably, the same mould probability of interference computing unit is calculated in detection grid (logp,latp) at
One cell A is to the same mould probability of interference C that there is the second community B with mould interference relationships therewithS AB(logp,latp) formula are as follows:
Wherein, CA(logp,latp) it is cell A in detection grid (logp,latp) at average reference signal receive power,
IBIt is cell B in detection grid (logp,latp) at average reference signal receive power, logpTo detect grid longitude；
latpTo detect grid dimension values.
It should be noted that can specifically be surveyed from LTE frequency sweep data, LTE drive test data and/or MR in the embodiment of the present invention
Multiple Reference Signal Received Power are obtained in amount data reporting.
It should be noted that the working principle of modules or submodule in present system embodiment and processed
Journey can be referring specifically to the associated description in embodiment of the method shown in above-mentioned Fig. 1-Fig. 2, and details are not described herein again.
As it can be seen that the embodiment of the present invention provides a kind of positioning system of problem cells in LTE long-term evolving network, it is first determined
Certain cell judges that the cell is dry by same mould as service grid, then in these service grids as the grid of quasi- serving cell
Disturbing the more serious grid of probability total amount, (i.e. first community is by other quasi- serving cells and the same mould probability of interference of quasi- interfered cell
Total amount is greater than the grid of preset value), grid is interfered as same mould, if being higher than with mould interference grid quantity with the accounting for servicing grid
Interference threshold then illustrates the grid for certain cell, in the grid as quasi- serving cell, by same mould serious interference
It is more, it may thereby determine that the cell is that same mould interferes more serious cell, that is, be located as problem cells.According to this hair
Scheme described in bright embodiment, can precise quantification orientation problem cell, provided to go out LTE network disturbance regime for Accurate Analysis
Accurate foundation makes it possible to accurately carry out targetedly signal optimization to the serious cell of same mould interference overall degree and adjust
It is whole.More deep scientific qualitative and accurate quantification analytical plan is provided to the interference of LTE wireless network and optimization problem, and more
Accurately optimal solution fundamentally improves the analysis ability of LTE wireless network, and then promotes network globality
Energy.
For the ease of clearly describing the technical solution of the embodiment of the present invention, in the embodiment of invention, use " first ",
Printed words such as " second " distinguish function and the essentially identical identical entry of effect or similar item, and those skilled in the art can manage
The printed words such as solution " first ", " second " are not defined quantity and execution order.
It will appreciated by the skilled person that implement the method for the above embodiments be can be with
Relevant hardware is instructed to complete by program, the program can be stored in a computer readable storage medium,
The program when being executed, includes the following steps: (the step of method), the storage medium, such as: ROM/RAM, magnetic disk, CD
Deng.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the scope of the present invention.It is all
Any modification, equivalent replacement, improvement and so within the spirit and principles in the present invention, are all contained in protection scope of the present invention
It is interior.
Claims (10)
1. the localization method of problem cells in a kind of LTE long-term evolving network, which is characterized in that the described method includes:
For each detection grid, multiple Reference Signal Received Power are obtained；
Determine that the corresponding quasi- serving cell of each detection grid and quasi- interference are small according to the multiple Reference Signal Received Power
Area；
Using first community as the grid of quasi- serving cell as the service grid of first community；The first community is in the inspection
Survey the serving cell surely at grid；
Judge in each service grid, first community is big by the same mould probability of interference total amount of other quasi- serving cells and quasi- interfered cell
In the grid of preset value, the same mould as first community interferes grid；
For each cell, judge whether the accounting of same mould interference grid quantity and service grid quantity is greater than interference threshold；It determines
The cell that the accounting is greater than interference threshold is problem cells, and cell carries out the optimization and adjustment of signal according to the problems identified.
2. the localization method of problem cells in LTE long-term evolving network according to claim 1, which is characterized in that described
Each corresponding quasi- serving cell of detection grid and quasi- interfered cell packet are determined according to the multiple Reference Signal Received Power
It includes:
The average value for calculating each cell Reference Signal Received Power at detection grid is flat at detection grid as each cell
Equal Reference Signal Received Power；
It calculates each cell average reference signal at detection grid and receives power and maximum average reference signal reception power
Difference；Determine that the difference is small less than servicing subject to cell determination corresponding to the average reference signal of first threshold reception power
Area determines that the difference is less than second threshold and is greater than small corresponding to the average reference signal reception power of the first threshold
Interfered cell subject to area is determining.
3. the localization method of problem cells in LTE long-term evolving network according to claim 1, which is characterized in that described
Judge in each service grid, first community is greater than pre- by the same mould probability of interference total amount of other quasi- serving cells and quasi- interfered cell
The grid for setting value, the same mould interference grid as first community include:
At each service grid, judge between first community and other quasi- serving cells and quasi- interfered cell with the presence or absence of dry with mould
Disturb relationship；The same mould interference relationships include same physical-layer cell identifier PCI interference, there are the interference of 3 relationship of mould, PCI to deposit by PCI
In the interference of 6 relationship of mould, PCI, there are the interference of 30 relationship of mould, PCI, there are the interference of 50 relationship of mould, PCI, there are secondary synchronization signals
There are SSS with the interference of m1 relationship for interference and PCI of the SSS with m0 relationship；
First community is calculated by the same mould probability of interference that there is the second community with mould interference relationships therewith；The second community is
Other quasi- serving cells in addition to first community or surely interfered cell；
First community is calculated by other quasi- serving cells and quasi- interfered cell with the sum of mould probability of interference, obtains first community by it
The same mould probability of interference total amount of its quasi- serving cell and quasi- interfered cell；
First community is greater than to the service of preset value by the same mould probability of interference total amount of other quasi- serving cells and quasi- interfered cell
Grid, the same mould as first community interfere grid.
4. the localization method of problem cells in LTE long-term evolving network according to claim 3, which is characterized in that described
Judging, which whether there is between first community and other quasi- serving cells and quasi- interfered cell with mould interference relationships, includes:
Whether the PCI of the PCI and first community that judge other quasi- serving cells and quasi- interfered cell identical, if they are the same then determine with
First community exists with PCI interference relationships；
Judge the PCI of other quasi- serving cells and quasi- interfered cell to the result of 3 modulus and the PCI of first community to 3 modulus
As a result whether identical, then determine that there are the interference of 3 relationship of PCI mould with first community if they are the same；
Judge the PCI of other quasi- serving cells and quasi- interfered cell to the result of 6 modulus and the PCI of first community to 6 modulus
As a result whether identical, then determine that there are the interference of 6 relationship of PCI mould with first community if they are the same；
Judge the PCI of other quasi- serving cells and quasi- interfered cell to the result of 30 modulus and the PCI of first community to 30 modulus
Result it is whether identical, if they are the same then determine there are the interference of 30 relationship of PCI mould with first community；
Judge the PCI of other quasi- serving cells and quasi- interfered cell to the result of 50 modulus and the PCI of first community to 50 modulus
Result it is whether identical, if they are the same then determine there are the interference of 50 relationship of PCI mould with first community；
Judge that the m0 of the PCI secondary synchronization signal SSS of other quasi- serving cells and quasi- interfered cell is auxiliary synchronous with the PCI of first community
Whether the m0 of signal SSS is identical, then determines that there are PCI secondary synchronization signal SSS with the interference of m0 relationship with first community if they are the same；
Judge that the m1 of the PCI secondary synchronization signal SSS of other quasi- serving cells and quasi- interfered cell is auxiliary synchronous with the PCI of first community
Whether the m1 of signal SSS is identical, then determines that there are PCI secondary synchronization signal SSS with the interference of m1 relationship with first community if they are the same.
5. the localization method of problem cells in LTE long-term evolving network according to claim 3, which is characterized in that calculate
In detection grid (logp,latp) at first community A the same mould that there is the second community B with mould interference relationships therewith is interfered it is general
Rate CS AB(logp,latp) method are as follows:
Wherein, CA(logp,latp) it is cell A in detection grid (logp,latp) at average reference signal receive power, IBFor
Cell B is in detection grid (logp,latp) at average reference signal receive power, logpTo detect grid longitude；latpFor
Detect grid dimension values.
6. the localization method of problem cells in LTE long-term evolving network according to claim 1, which is characterized in that specific
Multiple Reference Signal Received Power are obtained from LTE frequency sweep data, LTE drive test data and/or MR measurement report data.
7. the positioning system of problem cells in a kind of LTE long-term evolving network, which is characterized in that the system comprises:
Module is obtained, for being directed to each detection grid, obtains multiple Reference Signal Received Power；
Cell type determining module, for determining that each detection grid is corresponding according to the multiple Reference Signal Received Power
Quasi- serving cell and quasi- interfered cell；
Service grid determining module, for using first community as the grid of quasi- serving cell as the service grid of first community
Lattice；The first community is the serving cell surely at the detection grid；
Grid determining module is interfered with mould, for judging in each service grid, first community is dry by other quasi- serving cells and standard
The same mould probability of interference total amount for disturbing cell is greater than the grid of preset value, and the same mould as first community interferes grid；
Problem cells positioning and analysis module judge same mould interference grid quantity and service grid quantity for being directed to each cell
Accounting whether be greater than interference threshold；The cell for determining that the accounting is greater than interference threshold is problem cells, is asked according to determining
Inscribe optimization and adjustment that cell carries out signal.
8. the positioning system of problem cells in LTE long-term evolving network according to claim 7, which is characterized in that described
Cell type determining module includes:
Average reference signal receives power calculation unit, for calculating each cell Reference Signal Received Power at detection grid
Average value receives power as average reference signal of each cell at detection grid；
Cell type computing unit is used to calculate each cell average reference signal reception power at detection grid and puts down with maximum
The difference of equal Reference Signal Received Power；Determine that the difference is less than corresponding to the average reference signal reception power of first threshold
Cell determine subject to serving cell, determine the difference be less than second threshold and be greater than the first threshold average reference believe
Number receive power corresponding to cell determine subject to interfered cell.
9. the positioning system of problem cells in LTE long-term evolving network according to claim 7, which is characterized in that described
Include: with mould interference grid determining module
With mould interference type judging unit, for judging first community and other quasi- serving cells and standard at each service grid
With the presence or absence of with mould interference relationships between interfered cell；The same mould interference relationships include same physical-layer cell identifier PCI interference,
There are the interference of 6 relationship of mould, PCI, there are the interference of 30 relationship of mould, PCI, there are the passes of mould 50 there are the interference of 3 relationship of mould, PCI by PCI
There are SSS with the interference of m1 relationship for interference and PCI of the interference, PCI of system there are secondary synchronization signal SSS with m0 relationship；
With mould probability of interference computing unit, for calculating first community by therewith in the presence of the same of the second community with mould interference relationships
Mould probability of interference；Second community interfered cell for the other quasi- serving cells in addition to first community or surely；
With mould probability of interference total amount calculating unit, for calculating first community by the same mould of other quasi- serving cells and quasi- interfered cell
The sum of probability of interference obtains first community by other quasi- serving cells and the same mould probability of interference total amount of quasi- interfered cell；
Grid determination unit is interfered with mould, for being interfered first community by other quasi- serving cells and the same mould of quasi- interfered cell
Probability total amount is greater than the service grid of preset value, and the same mould as first community interferes grid.
10. the positioning system of problem cells in LTE long-term evolving network according to claim 9, which is characterized in that
The same mould interference type judging unit includes:
With PCI interference relationships judgment sub-unit, for judging the PCI and first community of other quasi- serving cells and quasi- interfered cell
PCI it is whether identical, it is then determining if they are the same to exist with first community with PCI interference relationships；
3 interference relationships judgment sub-unit of PCI mould, for judging the PCI of other quasi- serving cells and quasi- interfered cell to 3 modulus
As a result whether identical as result of the PCI of first community to 3 modulus, then determine that there are 3 relationships of PCI mould with first community if they are the same
Interference；
6 interference relationships judgment sub-unit of PCI mould, for judging the PCI of other quasi- serving cells and quasi- interfered cell to 6 modulus
As a result whether identical as result of the PCI of first community to 6 modulus, then determine that there are 6 relationships of PCI mould with first community if they are the same
Interference；
30 interference relationships judgment sub-unit of PCI mould, for judging the PCI of other quasi- serving cells and quasi- interfered cell to 30 modulus
Result and first community PCI it is whether identical to the result of 30 modulus, if they are the same then determine there are PCI moulds 30 with first community
The interference of relationship；
50 interference relationships judgment sub-unit of PCI mould, for judging the PCI of other quasi- serving cells and quasi- interfered cell to 50 modulus
Result and first community PCI it is whether identical to the result of 50 modulus, if they are the same then determine there are PCI moulds 50 with first community
The interference of relationship；
The SSS of PCI is with m0 interference relationships judgment sub-unit, for judging that the PCI of other quasi- serving cells and quasi- interfered cell is auxiliary
Whether the m0 of the PCI secondary synchronization signal SSS of the m0 and first community of synchronization signal SSS is identical, then determines if they are the same and first small
There are PCI secondary synchronization signal SSS with the interference of m0 relationship in area；
The SSS of PCI is with m1 interference relationships judgment sub-unit, for judging that the PCI of other quasi- serving cells and quasi- interfered cell is auxiliary
Whether the m1 of the PCI secondary synchronization signal SSS of the m1 and first community of synchronization signal SSS is identical, then determines if they are the same and first small
There are PCI secondary synchronization signal SSS with the interference of m1 relationship in area；
The same mould probability of interference computing unit is calculated in detection grid (logp,latp) at first community A to there is same mould therewith
The same mould probability of interference C of the second community B of interference relationshipsS AB(logp,latp) formula are as follows:
Wherein, CA(logp,latp) it is cell A in detection grid (logp,latp) at average reference signal receive power, IBFor
Cell B is in detection grid (logp,latp) at average reference signal receive power, logpTo detect grid longitude；latpFor
Detect grid dimension values.
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| CN106851668A (en) * | 2017-01-23 | 2017-06-13 | 深圳市网信联动通信技术股份有限公司 | The detection method and device of a kind of weak overlay area of cell |
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