CN105898767B - Co-frequency cell related coefficient preparation method and device based on LTE network - Google Patents
Co-frequency cell related coefficient preparation method and device based on LTE network Download PDFInfo
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- CN105898767B CN105898767B CN201610498753.9A CN201610498753A CN105898767B CN 105898767 B CN105898767 B CN 105898767B CN 201610498753 A CN201610498753 A CN 201610498753A CN 105898767 B CN105898767 B CN 105898767B
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Abstract
The present invention relates to a kind of co-frequency cell related coefficient preparation method and device based on LTE network.The method includes the steps: co-frequency cell MR detection ratio is obtained according to MR data；Main service road coverage cell is determined according to the frequency sweep data of road；According to the sub-sampling point of the total sampled point and the first RSRP difference of main service channel coverage cell within a preset range, co-frequency cell Road Detection ratio is obtained；Maximum value in co-frequency cell MR detection ratio and co-frequency cell Road Detection ratio is determined as co-frequency cell detection ratio；Application sum is cut out to all homogeneous-frequency adjacent-domains according to cut out application number and serving cell of the serving cell to homogeneous-frequency adjacent-domain in preset range, acquisition cuts out ratio；According to co-frequency cell detection ratio and ratio is cut out, obtains co-frequency cell related coefficient.The present invention can make up for it MR and lack number, accurately reflect the correlation of road cell, and the accurate relationship for embodying edge cell.
Description
Technical field
The present invention relates to LTE (Long Term Evolution, the long term evolution of universal mobile communications technology) network technologies
Field, more particularly to a kind of co-frequency cell related coefficient preparation method based on LTE network and a kind of based on the same of LTE network
Frequency cell related coefficient obtains device.
Background technique
LTE is by 3GPP (The 3rd Generation Partnership Project, third generation affiliate meter
Draw) UMTS (Universal Mobile Telecommunications System, the universal mobile communications system that organize to set up
System) technical standard long term evolution.LTE system introduces OFDM (Orthogonal Frequency Division
Multiplexing, orthogonal frequency division multiplexing) and the keys such as MIMO (Multi-Input&Multi-Output, multiple-input and multiple-output)
Technology significantly increases spectrum efficiency and message transmission rate；It supports various bandwidth distribution, and supports global mainstream 2G (the
Two generation mobile communication technical specifications)/3G (second generation mobile communication technical specification) frequency range and some newly-increased frequency ranges, thus frequency spectrum point
With more flexible, power system capacity and covering are also obviously improved.The more flattening of the LTE system network architecture is simplified, and net is reduced
Network node and system complexity also reduce network deployment and maintenance cost to reduce Time Delay of Systems.
When determining whether LTE cell crosses covering or whether be overlapped covering, generally pass through related coefficient (i.e. co-frequency cell
MR detection ratio) it is calculated.For example, China Mobile Telecommunications Group's Open Standard defines in use, crossing the definition of coverage cell
Are as follows: the related coefficient > 1% of cell and 8 cells, the cell were coverage cell.In another example Guangdong provincial company Open Standard
Definition is in use, cross coverage cell is defined as: related coefficient > 1% of cell and itself 8 cell other than X times of station spacing,
The cell was coverage cell；Wherein X is defaulted as 1.6.It is thus determined that whether cell was that coverage cell or overlapping covering are small
The key in area is to determine related coefficient.
Presently relevant coefficient is generally determined by following expressions: related coefficient=serving cell scell detection is adjacent with frequency
Measurement report number (i.e. sampling number)/serving cell detection overall measurement number of reports in area ncell 6dB.It that is to say, for
Each MR (measurement report), if (Reference Signal Receiving Power, reference signal receive the RSRP of scell
Power)-ncell RSRP≤6dB, then the measurement report number in formula of correlation coefficient adds 1.When incidence coefficient be greater than 1%, definition
The homogeneous-frequency adjacent-domain is associated with the serving cell, which can be arrived by service cell measurement and may generate to serving cell
Interference.
The determination method of above-mentioned related coefficient has the following deficiencies:
(1) data integrity issues: the calculating of related coefficient (i.e. co-frequency cell MR detection ratio) is entirely derived from MR and adopts
Number, but the scarce number situation of MR is generally existing at present, and the correlation between cell is often due to the scarce number problem of MR causes to lose；
(2) road cell relativity problem: MR reports time interval to be usually arranged as 5.12 seconds, the mobile terminal on road
Major part belongs to the state of high speed, especially on a highway.Since MR sampling time interval is big, speed of mobile terminal is fast, root
The related coefficient obtained according to MR data not can accurately reflect the correlation of road cell；
(3) fail accurate reflecting edge cell relations: MR adopts number major part derived from non-roaming subscriber, i.e., in same cell
The data of acquisition fail the exact relationship for accurately reflecting two cell edges.
Summary of the invention
Based on this, it is necessary in view of the above-mentioned problems, providing a kind of co-frequency cell related coefficient acquisition side based on LTE network
Method and device can make up for it MR and lack number, accurately reflect the correlation of road cell, and the accurate relationship for embodying edge cell.
In order to achieve the above object, the technical solution adopted by the present invention is as follows:
A kind of co-frequency cell related coefficient preparation method based on LTE network, comprising steps of
Co-frequency cell MR detection ratio is obtained according to MR data；
Main service road coverage cell is determined according to the frequency sweep data of road, wherein the main service road coverage cell is
The strongest cell of signal strength in the starting sample point of the frequency sweep data；
According to the son of the total sampled point and the first RSRP difference of the main service channel coverage cell within a preset range
Sampled point obtains co-frequency cell Road Detection ratio, wherein the first RSRP difference is the main service channel coverage cell
RSRP and the main service channel coverage cell homogeneous-frequency adjacent-domain RSRP difference；
Maximum value in the co-frequency cell MR detection ratio and the co-frequency cell Road Detection ratio is determined as together
Frequency cell detection ratio；
Apply number and the serving cell to all with frequency cutting out for homogeneous-frequency adjacent-domain in preset range according to serving cell
Adjacent area cuts out application sum, and acquisition cuts out ratio；
According to the co-frequency cell detection ratio and it is described cut out ratio, obtain co-frequency cell related coefficient.
A kind of co-frequency cell related coefficient acquisition device based on LTE network, comprising:
Co-frequency cell MR detection ratio obtains module, for obtaining co-frequency cell MR detection ratio according to MR data；
Main service road coverage cell obtains module, determines that main service road covering is small for the frequency sweep data according to road
Area, wherein the main service road coverage cell is that signal strength is strongest small in the starting sample point of the frequency sweep data
Area；
Co-frequency cell Road Detection ratio obtains module, for total sampled point according to the main service channel coverage cell
And the 1 RSRP difference sub-sampling point within a preset range, co-frequency cell Road Detection ratio is obtained, wherein described first
RSRP difference is the RSRP of the main service channel coverage cell and the homogeneous-frequency adjacent-domain of the main service channel coverage cell
The difference of RSRP；
Co-frequency cell detection ratio obtains module, is used for the co-frequency cell MR detection ratio and the co-frequency cell road
Maximum value in the detection ratio of road is determined as co-frequency cell detection ratio；
It cuts out ratio and obtains module, for applying for number and institute to cutting out for homogeneous-frequency adjacent-domain in preset range according to serving cell
It states serving cell and application sum is cut out to all homogeneous-frequency adjacent-domains, acquisition cuts out ratio；
Co-frequency cell related coefficient obtain module, for according to the co-frequency cell detection ratio and it is described cut out ratio,
Obtain co-frequency cell related coefficient.
The present invention is based on the co-frequency cell related coefficient preparation methods and device of LTE network, are compared to each other with the prior art
When, have following advantages:
(1) make up the problem of MR adopts number missing: the present invention obtains co-frequency cell MR detection ratio (MR data according to MR data
Interference model), co-frequency cell Road Detection ratio (road interference model) is obtained according to the frequency sweep data of road, is then passed through
MAX algorithm, which merges, determines co-frequency cell detection ratio, compensates for MR and lacks the missing for counting and leading to strategic road interference model；
(2) it establishes road interference model: establishing road interference model by the frequency sweep data of road, frequency sweep data provide 2S
(twice of standard deviation) precision, while the real network environment of properer mobile terminal, can accurately reflect road cell
Correlation provides a strong guarantee for road quality；
(3) it accurately embodies the relationship of edge cell: can directly be reflected in two cells by switch data (cutting out ratio) and be moved
The trend of dynamic terminal embodies the relationship between cell edge position closely.
Detailed description of the invention
Fig. 1 is that the present invention is based on the flow diagrams of the co-frequency cell related coefficient preparation method embodiment of LTE network；
Fig. 2 is that the present invention is based on the structural schematic diagrams that the co-frequency cell related coefficient of LTE network obtains Installation practice；
Fig. 3 is the structural schematic diagram that MR detection ratio in co-frequency cell of the present invention obtains module embodiments；
Fig. 4 is the structural schematic diagram that the main service channel coverage cell of the present invention obtains module embodiments；
Fig. 5 is the structural schematic diagram that Road Detection ratio in co-frequency cell of the present invention obtains module embodiments one；
Fig. 6 is the structural schematic diagram that Road Detection ratio in co-frequency cell of the present invention obtains module embodiments two.
Specific embodiment
It is with reference to the accompanying drawing and preferably real for the effect for further illustrating technological means adopted by the present invention and acquirement
Example is applied, to technical solution of the present invention, carries out clear and complete description.It should be noted that occur in text first, second
Equal wordings are only used for distinguishing same technical characteristic, are not limited to the sequence of technical characteristic and quantity etc..
As shown in Figure 1, a kind of co-frequency cell detection ratio preparation method based on LTE network, comprising steps of
S110, co-frequency cell MR detection ratio is obtained according to MR data；
S120, main service road coverage cell is determined according to the frequency sweep data of road, wherein the main service road covering
Cell is the strongest cell of signal strength in the starting sample point of the frequency sweep data；
S130, according to total sampled point of the main service channel coverage cell and the first RSRP difference within a preset range
Sub-sampling point, co-frequency cell Road Detection ratio is obtained, wherein the first RSRP difference is the main service channel covering
The difference of the RSRP of the homogeneous-frequency adjacent-domain of the RSRP of cell and the main service channel coverage cell；
S140, the maximum value in the co-frequency cell MR detection ratio and the co-frequency cell Road Detection ratio is determined
For co-frequency cell detection ratio；
S150, apply number and the serving cell to all cutting out for homogeneous-frequency adjacent-domain in preset range according to serving cell
Homogeneous-frequency adjacent-domain cuts out application sum, and acquisition cuts out ratio；
S160, according to the co-frequency cell detection ratio and it is described cut out ratio, obtain co-frequency cell related coefficient.
In step s 110, co-frequency cell MR detection ratio (SSsnm): serving cell (main plot) s detects homogeneous-frequency adjacent-domain
N times number accounts for all adjacent area number ratios that serving cell s is detected, wherein SS indicates signal strength, and the s in subscript indicates clothes
It is engaged in cell, the n in subscript indicates the homogeneous-frequency adjacent-domain of serving cell, and the m in subscript indicates MR data.
SSsnmIt can be calculated according to existing related coefficient calculation method in the prior art, i.e. SSsnm=serving cell
Scell detects the measurement report number in homogeneous-frequency adjacent-domain ncell 6dB/serving cell detection overall measurement number of reports.This method meter
It is larger to calculate level of signal strength gap, SSsnmAccuracy it is not high, cannot the degree of correlation between proper reflection cell.
In view of the foregoing drawbacks, the present invention is modified existing related coefficient calculation formula.So in one embodiment
In, step S110 may include:
S1101, the overall measurement number of reports that detects of serving cell and the 2nd RSRP difference are obtained according to MR data the
The first measurement report number in one preset range and the second measurement report number in the second preset range, wherein described second
RSRP difference is the RSRP of the serving cell and the difference of the RSRP of the homogeneous-frequency adjacent-domain of the serving cell；
S1102, according to expression formula: co-frequency cell MR detection ratio=(the first measurement report number/overall measurement report
Accuse number) the * the first preset constant+(the second measurement report number/overall measurement number of reports) * the second preset constant, it obtains same
Frequency cell MR detection ratio.
First preset range and the second preset range can determine according to actual needs, such as the first preset range be less than
Range equal to 3dB, the second preset range are to be greater than the range of 3dB less than or equal to 6dB.First preset constant and second is preset often
Number be empirical, wherein the first preset constant can be 1~1.2 section numerical value, preferably 1.2, the second preset constant can
Think the numerical value in 0.8~1 section, preferably 1.Revised co-frequency cell MR detection ratio by stages is calculated, and is considered
The weight coefficient in each section, as a result more accurate, the correlation between properer reflection cell.
In a specific embodiment, modified SSsnm=serving cell detects (serving cell in the 3dB of homogeneous-frequency adjacent-domain
The homogeneous-frequency adjacent-domain RSRP- RSRP is less than or equal to 3dB) measurement report number/overall measurement number of reports * 1.2+ serving cell detection homogeneous-frequency adjacent-domain
(serving cell RSRP- homogeneous-frequency adjacent-domain RSRP is less than equal 6dB and greater than 3dB) measurement report number/overall measurement report in 6dB, outside 3dB
Number.
In the step s 120, frequency range includes D frequency and F frequency outside the room LTE at present, and wherein D frequency includes tri- frequencies of D1, D2 and D3
Point, F frequency includes bis- frequency points of F1 and F2.Due to Backend parameter setting, if D1 frequency is greater than -92dBm on real road
(decibel milli X), substantially by D1 frequency covering path.
Main service road coverage cell can be determining according to various ways, for example, in each sampled point, signal strength one
As be to arrange from big to small, if the signal strength of a cell continuous N number of is adopted from first starting sample point to subsequent
Signal strength makes number one in sampling point, then it is main service road coverage cell, i.e. top cell that the cell, which is,.N can root
According to needing to be arranged, such as setting N is the 13rd sampled point, if that a cell is sampled from the 1st sampled point to the 13rd
The signal strength of point makes number one, then the cell is main service road coverage cell.Furthermore it is possible to provide secondary strong in 3dBm
Co-frequency cell is time service road coverage cell.
When calculating continuous sampling point, the method for the above-mentioned main service road coverage cell of determination is crossed with harshness, does not consider reality
Border switching condition when can lose non-most strong but should belong to continuous sampling point partial dot.So in one embodiment, step
S120 may include:
It S1201, will include D1 frequency point and RSRP maximum in the starting sample point (i.e. the 1st sampled point) of the frequency sweep data
Cell be determined as road coverage cell；
Road coverage cell is mainly determined by first cell of frequency sweep data starting sample point, if first sampled point
In cell containing D1 frequency, and signal strength be it is most strong, then the cell is road coverage cell.In view of signal not really
Qualitative, a sampled point may be floatd due to burst, so the whether main service road in the road coverage cell can not be determined
Coverage cell needs to integrate subsequent sampled point and judges whether the road coverage cell is main service road coverage cell.
S1202, in each sampled point in the first continuous sampling point section, detect the road coverage cell respectively
Whether the difference of the RSRP of the homogeneous-frequency adjacent-domain of RSRP and the road coverage cell is all larger than the first preset threshold, wherein described the
One continuous sampling section includes default continuous sampled point, and first sampled point in the first continuous sampling point section is
Next sampled point of the starting sample point；
Each sampled point is continuous in first continuous sampling point section, such as the sampling in the first continuous sampling point section
Point be followed successively by the 2nd sampled point, the 3rd sampled point, the 4th sampled point ..., the 10th sampled point, the sequence root of sampled point
It is determined according to the sampling time.First preset threshold determine according to actual needs, such as can be set as 3dB.In the first continuous sampling
In each sampled point in point section, difference is required to be greater than the first preset threshold.By taking the 10th sampled point as an example, road covering
The RSRP of cell needs 3dB or more stronger than homogeneous-frequency adjacent-domain, just carries out subsequent judgement.
S1203, if so, in each sampled point in the second continuous sampling point section, it is small to detect the road covering respectively
Whether the RSRP in area is all satisfied preset condition, wherein the second continuous sampling point section includes default continuous sampled point,
First sampled point in second continuous sampling point section is the last one sampling in the first continuous sampling point section
Next sampled point of point；
Each sampled point in second continuous sampling section is continuous, such as the sampling in the first continuous sampling point section
Point be followed successively by the 2nd sampled point, the 3rd sampled point ..., the 10th sampled point, the sampled point in second continuous sampling section
It is followed successively by the 11st sampled point, the 12nd sampled point and the 13rd sampled point.
In one embodiment, the preset condition includes: (condition 1) if signal strength is strongest in a sampled point
Cell is the alien-frequency district of the road coverage cell, and the RSRP of the road coverage cell is greater than signal strength threshold, signal
Intensity threshold can be arranged according to the actual situation, such as signal strength threshold can be set to -92dBm；Alternatively, (condition 2) if
The strongest cell of signal strength is the alien-frequency district of the road coverage cell in a sampled point, the alien-frequency district
For the difference of RSRP and the RSRP of the road coverage cell less than the second preset threshold, the second preset threshold can be according to practical need
It is configured, such as is set as 6dB；Alternatively, (condition 3) is if the strongest cell of signal strength is described in a sampled point
The RSRP's of the homogeneous-frequency adjacent-domain of road coverage cell, the RSRP of the strongest homogeneous-frequency adjacent-domain of signal strength and the road coverage cell
Difference is less than third predetermined threshold value, and third predetermined threshold value can be set according to actual needs, such as be set as 3dB.For the 3rd
Condition is illustrated with an example, after road coverage cell reaches most strongly continuous 2 sampled points, in third sampled point road
Cell signals coverage intensity becomes time strong, but compare most by force with frequency sampling point it is 3dB weak in, then also it is believed that continuously covering.
As long as the RSRP of road coverage cell meets any one condition in three above condition, even if adopting at some
The RSRP of road coverage cell is not top in sampling point, should also be calculated as continuously covering, can regard as the TOP continuously occurred
Sampled point.
S1204, if satisfied, determining the road coverage cell for main service road coverage cell.
In step s 130, co-frequency cell Road Detection ratio SSsnrRoad i.e. to be established according to frequency sweep data interferes mould
Type provides sound assurance for the deduction of road quality.SSsnrIn SS indicate signal strength, the s in subscript indicates main clothes
It is engaged in road coverage cell, the n in subscript indicates the homogeneous-frequency adjacent-domain of main service road coverage cell, and the r in subscript indicates that road is swept
Frequency evidence.
SSsnrIt can be obtained according to various ways, be illustrated below with reference to two embodiments.
In one embodiment, step S130 may include:
S1301, the total sampled point and the first RSRP that main service channel coverage cell is obtained according to the frequency sweep data of road
Third sub-sampling point of the difference in the 5th preset range；
S1302, according to the ratio of the third sub-sampling point and total sampled point, obtain co-frequency cell Road Detection ratio
Example.
5th preset range can determine according to actual needs, such as the 5th preset range is the range less than or equal to 6dB.
By stages is not calculated this method, and obtained accuracy is lower.
In a specific embodiment, SSsnr=[the same frequency of frequency sweep main service road coverage cell A cell and A cell
(A cell RSRP- homogeneous-frequency adjacent-domain RSRP the is less than or equal to 6dB) sampled point/total sampled point of A cell in the 6dB of adjacent area].
In another embodiment, step S130 includes:
S130-1, total sampled point and first that main service channel coverage cell is obtained according to the frequency sweep data of road
First sub-sampling point of the RSRP difference in third preset range and the second sub-sampling point in the 4th preset range；
S130-2, according to expression formula: co-frequency cell Road Detection ratio=(the first sub-sampling point/total sampling
Point) * third preset constant+(the second sub-sampling point/total sampled point) * the four preset constant, obtain co-frequency cell road
Road detection ratio.
Third preset range and the 4th preset range can determine according to actual needs, such as third preset range be less than
Range equal to 3dB, the second preset range are to be greater than the range of 3dB less than or equal to 6dB.Third preset constant and the 4th is preset often
Number is empirical, and wherein third preset constant can be a numerical value in 1~1.2 section, and the preferably 1.2, the 4th is default
Constant can be a numerical value in 0.8~1 section, preferably 1.SSsnrBy stages is calculated, and considers the power in each section
Weight coefficient, as a result more accurate, the correlation between properer reflection road cell.
In a specific embodiment, SSsnr=[the same frequency of frequency sweep main service road coverage cell A cell and A cell
(A cell RSRP- homogeneous-frequency adjacent-domain RSRP the be less than or equal to 3dB) sampled point/total sampled point of A cell in the 3dB of adjacent area] * 1.2+ frequency sweep A is small
(A cell RSRP- homogeneous-frequency adjacent-domain RSRP is less than or equal to 6dB and is greater than 3dB) sampled point/A is small in area and homogeneous-frequency adjacent-domain 6dB, outside 3dB
The total sampled point of Qu.
In step S140, co-frequency cell detection ratio SSsnFor based on co-frequency cell MR detection ratio (SSsnm) and with frequency
Cell Road Detection ratio (SSsnr) maximum value, calculation formula is as follows:
Co-frequency cell detection ratio (SSsn)=MAX ((SSsnm),(SSsnr))
It is accurate to embody cell edge position in order to reflect the trend of mobile terminal in two cells in step S150
Between relationship, the present invention also considers according to switch data (traffic statistics data) when calculating related coefficient, obtained according to switch data
Ratio must be cut out.
Cut out ratio (HOsn)=serving cell S cuts out application number/serving cell S to homogeneous-frequency adjacent-domain in preset range
Application sum is cut out to all homogeneous-frequency adjacent-domains.Such as cut out ratio=serving cell S in the 6dB of homogeneous-frequency adjacent-domain (serving cell S's
The RSRP of the homogeneous-frequency adjacent-domain RSRP- is less than or equal to 6dB) it cuts out application number/serving cell S and all homogeneous-frequency adjacent-domains is cut out and apply always
Number.
In step S160, co-frequency cell related coefficient is obtained according to the co-frequency cell detection ratio and the ratio that cuts out
?.
In one embodiment, related coefficient CO in co-frequency cell can be obtained according to following formulasn:
Co-frequency cell related coefficient COsn=co-frequency cell detection ratio SSsn* the weight Kss+ of co-frequency cell related coefficient
Cut out ratio HOsn* the Kho of proportional weight is cut out, wherein Kho=1-Kss, Kss is empirical value.
Based on the same inventive concept, the present invention also provides a kind of, and the co-frequency cell related coefficient based on LTE network is filled
It sets, the specific embodiment of apparatus of the present invention is described in detail with reference to the accompanying drawing.
As shown in Fig. 2, a kind of co-frequency cell related coefficient based on LTE network obtains device, comprising:
Co-frequency cell MR detection ratio obtains module 110, for obtaining co-frequency cell MR detection ratio according to MR data；
Main service road coverage cell obtains module 120, determines that main service road covers for the frequency sweep data according to road
Lid cell, wherein the main service road coverage cell is that signal strength is strongest in the starting sample point of the frequency sweep data
Cell；
Co-frequency cell Road Detection ratio obtains module 130, for always adopting according to the main service channel coverage cell
The sub-sampling point of sampling point and the first RSRP difference within a preset range obtains co-frequency cell Road Detection ratio, wherein described
First RSRP difference is the RSRP of the main service channel coverage cell and the homogeneous-frequency adjacent-domain of the main service channel coverage cell
RSRP difference；
Co-frequency cell detection ratio obtains module 140, for the co-frequency cell MR detection ratio and the same frequency is small
Maximum value in area's Road Detection ratio is determined as co-frequency cell detection ratio；
It cuts out ratio and obtains module 150, for cutting out application number to homogeneous-frequency adjacent-domain in preset range according to serving cell
Application sum is cut out to all homogeneous-frequency adjacent-domains with the serving cell, acquisition cuts out ratio；
Co-frequency cell related coefficient obtains module 160, for according to the co-frequency cell detection ratio and described cutting out ratio
Example obtains co-frequency cell related coefficient.
Co-frequency cell MR detection ratio obtains module 110 can be according to existing related coefficient calculation method in the prior art
Obtain SSsnm, i.e. SSsnm=serving cell scell detects the measurement report number in homogeneous-frequency adjacent-domain ncell 6dB/serving cell inspection
The overall measurement number of reports of survey.But this method calculating level of signal strength gap is larger, SSsnmAccuracy it is not high, cannot be proper
Reflect the degree of correlation between cell.
In view of the foregoing drawbacks, the present invention is modified existing related coefficient calculation formula.So in one embodiment
In, as shown in figure 3, co-frequency cell MR detection ratio acquisition module 110 may include:
Measurement report number obtaining unit 1101 is reported for obtaining the overall measurement that serving cell detects according to MR data
First measurement report number of several and the 2nd RSRP difference in the first preset range and second in the second preset range is surveyed
Number of reports is measured, wherein the second RSRP difference is the RSRP of the serving cell and the homogeneous-frequency adjacent-domain of the serving cell
The difference of RSRP；
Co-frequency cell MR detection ratio obtaining unit 1102, for according to expression formula: co-frequency cell MR detection ratio=(institute
State the first measurement report number/overall measurement number of reports) the * the first preset constant+(the second measurement report number/total survey
Measure number of reports) the * the second preset constant, obtain co-frequency cell MR detection ratio.
Revised co-frequency cell MR detection ratio by stages is calculated, and considers the weight coefficient in each section, as a result
More accurate, between properer reflection cell correlation.
Main service road coverage cell obtains module 120 can determine main service road coverage cell according to various ways,
For example, signal strength usually arranges from big to small in each sampled point, if the signal strength of a cell is from first
A starting sample point signal strength into subsequent continuous N number of sampled point makes number one, then the cell be based on service
Road coverage cell, i.e. top cell.N can according to need setting.
When calculating continuous sampling point, the method for the above-mentioned main service road coverage cell of determination is crossed with harshness, does not consider reality
Border switching condition when can lose non-most strong but should belong to continuous sampling point partial dot.So in one embodiment, such as Fig. 4
Shown, the main service road coverage cell obtains module 120 and may include:
Road coverage cell determination unit 1201, in the starting sample point by the frequency sweep data include D1 frequency point and
The maximum cell of RSRP is determined as road coverage cell；
Difference detection unit 1202, described in being detected in each sampled point in the first continuous sampling point section respectively
It is default whether the difference of the RSRP of the homogeneous-frequency adjacent-domain of the RSRP of road coverage cell and the road coverage cell is all larger than first
Threshold value, wherein first continuous sampling section includes to preset a continuous sampled point, in the first continuous sampling point section
First sampled point be the starting sample point next sampled point；
RSRP detection unit 1203, for when difference is all larger than the first preset threshold, in the second continuous sampling point section
Each sampled point in, whether the RSRP for detecting the road coverage cell respectively is all satisfied preset condition, wherein described second
Continuous sampling point section includes default continuous sampled point, and first sampled point in the second continuous sampling point section is
Next sampled point of the last one sampled point in first continuous sampling point section；
Main service road coverage cell determination unit 1204, for when RSRP is all satisfied preset condition, by the road
Coverage cell determines to be main service road coverage cell.
In one embodiment, the preset condition includes: (condition 1) if signal strength is strongest in a sampled point
Cell is the alien-frequency district of the road coverage cell, and the RSRP of the road coverage cell is greater than signal strength threshold, signal
Intensity threshold can be arranged according to the actual situation, such as signal strength threshold can be set to -92dBm；Alternatively, (condition 2) if
The strongest cell of signal strength is the alien-frequency district of the road coverage cell in a sampled point, the alien-frequency district
For the difference of RSRP and the RSRP of the road coverage cell less than the second preset threshold, the second preset threshold can be according to practical need
It is configured, such as is set as 6dB；Alternatively, (condition 3) is if the strongest cell of signal strength is described in a sampled point
The RSRP's of the homogeneous-frequency adjacent-domain of road coverage cell, the RSRP of the strongest homogeneous-frequency adjacent-domain of signal strength and the road coverage cell
Difference is less than third predetermined threshold value, and third predetermined threshold value can be set according to actual needs, such as be set as 3dB.
As long as the RSRP of road coverage cell meets any one condition in three above condition, even if adopting at some
The RSRP of road coverage cell is not top in sampling point, should also be calculated as continuously covering, can regard as the TOP continuously occurred
Sampled point.
Co-frequency cell Road Detection ratio, which obtains module 130, can obtain SS according to various wayssnr, for example, in a reality
It applies in example, as shown in figure 5, co-frequency cell Road Detection ratio acquisition module 130 may include:
Second sampled point obtaining unit 1301 obtains main service channel coverage cell for the frequency sweep data according to road
The third sub-sampling point of total sampled point and the first RSRP difference in the 5th preset range；
Second co-frequency cell Road Detection ratio obtaining unit 1302, for according to the third sub-sampling point and described total
The ratio of sampled point obtains co-frequency cell Road Detection ratio.By stages is not calculated this method, and this method obtains accurate
It spends lower.
In another embodiment, as shown in fig. 6, co-frequency cell Road Detection ratio acquisition module 130 can wrap
It includes:
First sampled point obtaining unit 130-1, for obtaining main service channel coverage cell according to the frequency sweep data of road
The first sub-sampling point in third preset range of total sampled point and the first RSRP difference and in the 4th preset range
Second sub-sampling point；
First co-frequency cell Road Detection ratio obtaining unit 130-2, for according to expression formula: co-frequency cell Road Detection
Ratio=(the first sub-sampling point/total sampled point) * third preset constant+(the second sub-sampling point/described is always adopted
Sampling point) the * the four preset constant, obtain co-frequency cell Road Detection ratio.
SS in this methodsnrBy stages is calculated, and considers the weight coefficient in each section, as a result more accurate, is more sticked on
Cut the correlation between reflection road cell.
Co-frequency cell detection ratio SSsnFor based on co-frequency cell MR detection ratio (SSsnm) and co-frequency cell Road Detection ratio
Example (SSsnr) maximum value, co-frequency cell detection ratio obtain module 140 according to following calculation formula obtain co-frequency cell detection
Ratio SSsn:
Co-frequency cell detection ratio (SSsn)=MAX ((SSsnm),(SSsnr))
In order to reflect the trend of mobile terminal in two cells, the accurate relationship embodied between cell edge position, this
Invention is also considered when calculating related coefficient according to switch data, cuts out ratio according to switch data acquisition.Cut out ratio (HOsn)
=serving cell S cuts out application to all homogeneous-frequency adjacent-domains to the application number/serving cell S that cuts out to homogeneous-frequency adjacent-domain in preset range
Sum.
In one embodiment, the co-frequency cell related coefficient obtains module 150 and can be obtained according to following formula
Co-frequency cell related coefficient COsn:
Co-frequency cell related coefficient COsn=co-frequency cell detection ratio SSsn* the weight Kss+ of co-frequency cell related coefficient
Cut out ratio HOsn* the Kho of proportional weight is cut out, wherein Kho=1-Kss, Kss is empirical value.
The present invention is based on the co-frequency cell related coefficient preparation methods and device of LTE network, are compared to each other with the prior art
When, have following advantages:
(1) make up the problem of MR adopts number missing: the present invention obtains co-frequency cell MR detection ratio (MR data according to MR data
Interference model), co-frequency cell Road Detection ratio (road interference model) is obtained according to the frequency sweep data of road, is then passed through
MAX algorithm, which merges, determines co-frequency cell detection ratio, compensates for MR and lacks the missing for counting and leading to strategic road interference model；
(2) it establishes road interference model: establishing road interference model by the frequency sweep data of road, frequency sweep data provide 2S
(twice of standard deviation) precision, while the real network environment of properer mobile terminal, can accurately reflect road cell
Correlation provides a strong guarantee for road quality；
(3) related coefficient (co-frequency cell MR detection ratio) accuracy promoted: revised MR related coefficient by stages into
Row calculates, and considers the weighted value in each section, and related coefficient accuracy is higher, the degree of correlation between properer cell；
(4) it accurately embodies the relationship of edge cell: the dynamic of mobile terminal in two cells can directly be reflected by switch data
To the close relationship embodied between cell edge position.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (6)
1. a kind of co-frequency cell related coefficient preparation method based on LTE network, which is characterized in that comprising steps of
Co-frequency cell MR detection ratio is obtained according to MR data；
Main service road coverage cell is determined according to the frequency sweep data of road, wherein the main service road coverage cell is in institute
State the strongest cell of signal strength in the starting sample point of frequency sweep data；
According to the sub-sampling of the total sampled point and the first RSRP difference of the main service road coverage cell in preset range A
Point obtains co-frequency cell Road Detection ratio, wherein the first RSRP difference is the main service road coverage cell
The difference of the RSRP of the homogeneous-frequency adjacent-domain of RSRP and the main service road coverage cell；
Maximum value in the co-frequency cell MR detection ratio and the co-frequency cell Road Detection ratio is determined as small with frequency
Area's detection ratio；
Apply number and the serving cell to all homogeneous-frequency adjacent-domains cutting out for homogeneous-frequency adjacent-domain in preset range B according to serving cell
Cut out application sum, acquisition cut out ratio；
According to the co-frequency cell detection ratio and it is described cut out ratio, obtain co-frequency cell related coefficient；
Wherein, include: according to the step of MR data acquisition co-frequency cell MR detection ratio
It is default first that overall measurement number of reports and the 2nd RSRP difference that the serving cell detects are obtained according to MR data
The first measurement report number in range and the second measurement report number in the second preset range, wherein the second RSRP difference
For the difference of the RSRP of the homogeneous-frequency adjacent-domain of the RSRP and serving cell of the serving cell；
According to expression formula: co-frequency cell MR detection ratio=(the first measurement report number/overall measurement number of reports) * the first
Preset constant+(the second measurement report number/overall measurement number of reports) * the second preset constant obtains co-frequency cell MR inspection
Survey ratio；
Co-frequency cell related coefficient is obtained according to following formula:
The weight of co-frequency cell detection ratio described in co-frequency cell related coefficient=co-frequency cell detection ratio *+described is cut
The weight of ratio is cut out described in ratio * out；
MR is measurement report.
2. the co-frequency cell related coefficient preparation method according to claim 1 based on LTE network, which is characterized in that root
The step of determining main service road coverage cell according to the frequency sweep data of road include:
It will be in the starting sample point of the frequency sweep data comprising D1 frequency point and the maximum cell of RSRP is determined as road coverage cell；
In each sampled point in the first continuous sampling point section, detect respectively the road coverage cell RSRP and the road
Whether the difference of the RSRP of the homogeneous-frequency adjacent-domain of road coverage cell is all larger than the first preset threshold, wherein first continuous sampling area
Between comprising default continuous first sampled point, first sampled point in the first continuous sampling point section is the starting
Next sampled point of sampled point；
If so, the RSRP for detecting the road coverage cell respectively is in each sampled point in the second continuous sampling point section
It is no to be all satisfied preset condition, wherein the second continuous sampling point section includes default continuous second sampled point, described the
First sampled point in two continuous sampling point sections is under the last one sampled point in the first continuous sampling point section
One sampled point；If the preset condition include: in a sampled point the strongest cell of signal strength be the road covering
The RSRP of the alien-frequency district of cell, the road coverage cell is greater than signal strength threshold；Alternatively, if believing in a sampled point
Number strongest cell of intensity is the alien-frequency district of the road coverage cell, and the RSRP of the alien-frequency district and the road cover
The difference of the RSRP of cell is less than the second preset threshold；Alternatively, if the strongest cell of signal strength is institute in a sampled point
State the homogeneous-frequency adjacent-domain of road coverage cell, the RSRP of the RSRP of the strongest homogeneous-frequency adjacent-domain of signal strength and the road coverage cell
Difference be less than third predetermined threshold value；
If satisfied, determining the road coverage cell for main service road coverage cell.
3. the co-frequency cell related coefficient preparation method according to claim 1 based on LTE network, which is characterized in that
According to the sub-sampling of the total sampled point and the first RSRP difference of the main service road coverage cell within a preset range
Point, obtain co-frequency cell Road Detection ratio the step of include:
The total sampled point for obtaining main service road coverage cell according to the frequency sweep data of road and the first RSRP difference are in third
The first sub-sampling point in preset range and the second sub-sampling point in the 4th preset range；
According to expression formula: co-frequency cell Road Detection ratio=(the first sub-sampling point/total sampled point) * third is default
Constant+(the second sub-sampling point/total sampled point) * the four preset constant obtains co-frequency cell Road Detection ratio；
Alternatively,
According to the sub-sampling of the total sampled point and the first RSRP difference of the main service road coverage cell within a preset range
Point, obtain co-frequency cell Road Detection ratio the step of include:
The total sampled point for obtaining main service road coverage cell according to the frequency sweep data of road and the first RSRP difference are the 5th
Third sub-sampling point in preset range；
According to the ratio of the third sub-sampling point and total sampled point, co-frequency cell Road Detection ratio is obtained.
4. a kind of co-frequency cell related coefficient based on LTE network obtains device characterized by comprising
Co-frequency cell MR detection ratio obtains module, for obtaining co-frequency cell MR detection ratio according to MR data；
Main service road coverage cell obtains module, determines main service road coverage cell for the frequency sweep data according to road,
Wherein the main service road coverage cell is the strongest cell of signal strength in the starting sample point of the frequency sweep data；
Co-frequency cell Road Detection ratio obtains module, for according to total sampled point of the main service road coverage cell and
Sub-sampling point of the first RSRP difference in preset range A obtains co-frequency cell Road Detection ratio, wherein first RSRP
Difference is the RSRP of the main service road coverage cell and the RSRP of the homogeneous-frequency adjacent-domain of the main service road coverage cell
Difference；
Co-frequency cell detection ratio obtains module, for examining the co-frequency cell MR detection ratio and the co-frequency cell road
Maximum value in survey ratio is determined as co-frequency cell detection ratio；
It cuts out ratio and obtains module, for cutting out application number and described to homogeneous-frequency adjacent-domain in preset range B according to serving cell
Serving cell cuts out application sum to all homogeneous-frequency adjacent-domains, and acquisition cuts out ratio；
Co-frequency cell related coefficient obtains module, for according to the co-frequency cell detection ratio and it is described cut out ratio, obtain
Co-frequency cell related coefficient；
Wherein, the co-frequency cell MR detection ratio acquisition module includes:
Measurement report number obtaining unit, for obtaining the overall measurement number of reports that the serving cell detects according to MR data, with
And the 2nd first measurement report number of the RSRP difference in the first preset range and the second measurement report in the second preset range
Number is accused, wherein the second RSRP difference is the RSRP of the serving cell and the RSRP of the homogeneous-frequency adjacent-domain of the serving cell
Difference；
Co-frequency cell MR detection ratio obtaining unit, for according to expression formula: co-frequency cell MR detection ratio=(described first surveys
Measure number of reports/overall measurement number of reports) the * the first preset constant+(the second measurement report number/overall measurement report
Number) the * the second preset constant, obtain co-frequency cell MR detection ratio；
The co-frequency cell related coefficient obtains module and obtains co-frequency cell related coefficient according to following formula:
The weight of co-frequency cell detection ratio described in co-frequency cell related coefficient=co-frequency cell detection ratio *+described is cut
The weight of ratio is cut out described in ratio * out；
MR is measurement report.
5. the co-frequency cell related coefficient according to claim 4 based on LTE network obtains device, which is characterized in that institute
Stating main service road coverage cell acquisition module includes:
Road coverage cell determination unit, for including D1 frequency point and RSRP maximum in the starting sample point by the frequency sweep data
Cell be determined as road coverage cell；
Difference detection unit, in each sampled point in the first continuous sampling point section, detecting the road covering respectively
Whether the difference of the RSRP of the homogeneous-frequency adjacent-domain of the RSRP of cell and the road coverage cell is all larger than the first preset threshold, wherein
First continuous sampling section includes default continuous first sampled point, and first in the first continuous sampling point section
A sampled point is next sampled point of the starting sample point；
RSRP detection unit, for each the adopting when difference is all larger than the first preset threshold, in the second continuous sampling point section
In sampling point, whether the RSRP for detecting the road coverage cell respectively is all satisfied preset condition, wherein second continuous sampling
Point section includes default continuous second sampled point, and first sampled point in the second continuous sampling point section is described
Next sampled point of the last one sampled point in first continuous sampling point section；If the preset condition includes: to adopt at one
The strongest cell of signal strength is the alien-frequency district of the road coverage cell in sampling point, and the RSRP of the road coverage cell is big
In signal strength threshold；Alternatively, if the strongest cell of signal strength is the different of the road coverage cell in a sampled point
The difference of the RSRP of frequency cell, the RSRP of the alien-frequency district and the road coverage cell is less than the second preset threshold；Alternatively,
If the strongest cell of signal strength is the homogeneous-frequency adjacent-domain of the road coverage cell in a sampled point, signal strength is strongest
The difference of the RSRP of homogeneous-frequency adjacent-domain and the RSRP of the road coverage cell are less than third predetermined threshold value；
Main service road coverage cell determination unit, for when RSRP is all satisfied preset condition, by the road coverage cell
Determine to be main service road coverage cell.
6. the co-frequency cell related coefficient according to claim 4 based on LTE network obtains device, which is characterized in that
The co-frequency cell Road Detection ratio obtains module
First sampled point obtaining unit obtains total sampling of main service road coverage cell for the frequency sweep data according to road
The the first sub-sampling point of point and the first RSRP difference in third preset range and the second son in the 4th preset range are adopted
Sampling point；
First co-frequency cell Road Detection ratio obtaining unit, for according to expression formula: co-frequency cell Road Detection ratio=(institute
State the first sub-sampling point/total sampled point) * third preset constant+(the second sub-sampling point/total sampled point) * the
Four preset constants obtain co-frequency cell Road Detection ratio；
Alternatively,
The co-frequency cell Road Detection ratio obtains module
Second sampled point obtaining unit obtains total sampling of main service road coverage cell for the frequency sweep data according to road
The third sub-sampling point of point and the first RSRP difference in the 5th preset range；
Second co-frequency cell Road Detection ratio obtaining unit, for according to the third sub-sampling point and total sampled point
Ratio obtains co-frequency cell Road Detection ratio.
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