CN106211209B - The method and apparatus for obtaining the total interference value of PCI based on co-frequency cell related coefficient - Google Patents
The method and apparatus for obtaining the total interference value of PCI based on co-frequency cell related coefficient Download PDFInfo
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- CN106211209B CN106211209B CN201610498752.4A CN201610498752A CN106211209B CN 106211209 B CN106211209 B CN 106211209B CN 201610498752 A CN201610498752 A CN 201610498752A CN 106211209 B CN106211209 B CN 106211209B
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H—ELECTRICITY
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- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/08—Testing, supervising or monitoring using real traffic
Abstract
The present invention relates to a kind of method and apparatus for obtaining the total interference value of PCI based on co-frequency cell related coefficient.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；Acquisition cuts out ratio, according to co-frequency cell detection ratio and cuts out ratio, obtains co-frequency cell related coefficient；The total interference value of PCI of the serving cell is obtained according to the co-frequency cell related coefficient and PCI interference coefficient.The present invention can effectively solve the problem that the excessively mechanical and unilateral defect of existing assessment PCI quality method.
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 method for obtaining the total interference value of PCI based on co-frequency cell related coefficient and one kind based on small with frequency
The device of area's related coefficient acquisition total interference value of PCI.
Background technique
PCI (physical-layer Cell identity, Physical Cell Identifier) is for distinguishing the wireless of different community
Signal, value range 0-503.PCI planning at present generally follows following constraint condition:
(1) the PCI mould 3 of different community is different under same base station, i.e. mod (PCI1,3) ≠ mod (PCI2,3)；
(2) residual value of neighboring community PCI mould 6 is different, i.e. mod (PCI1,6) ≠ mod (PCI2,6)；
(3) PCI between all adjacent areas is differed, i.e. PCI1) ≠ PCI2；
(4) 30 residual value of neighboring community PCI mould is different, i.e. mod (PCI1,30) ≠ mod (PCI2,30).
Although PCI should avoid all kinds of conflicts when planning as far as possible, due to the complexity of real network environment, actually answering
Can always there are all kinds of conflicts in.It is generally commented at present by PCI mod3 conflict, PCI mod6 conflict and PCI mod30 conflict
Estimate the quality of LTE network.The interference that all kinds of conflicts can be assessed is as follows:
(1) PCI mod3 conflict is for assessing P-SS interference: PCI=3*Group ID (S-SS)+Sector in LTE network
ID (P-SS) will result in the interference of P-SS if PCI mod3 value is identical；
(2) PCI mod6 conflict is for assessing downlink RS (Reference Signal, reference signal) interference: in time domain position
It sets in the case where fixing, downlink reference signal has 6 freq shift (frequency shift (FS)) in frequency domain, if PCI mod6 value phase
Together, it will cause interfering with each other for downlink RS；
(3) PCI mod30 conflict is for assessing uplink DMRS (user's DRS (Dedicated Reference Signal)) and SRS (Sounding
Reference Signal, Sounding Reference Signal) signal interference: in PUSCH (Physical Uplink Shared
Channel, Physical Uplink Shared Channel) in carry the information of DMRS and SRS, the two reference signals for channel estimation and
Demodulate extremely important, they are that have 30 groups of different combined sequences, if PCI by 30 groups of basic ZC Sequence compositions
Mod30 value is identical, then will cause the interfering with each other (at a TXantenna) of uplink DM-RS and SRS.
It is often individually embodied in all kinds of interference practical applications, the definition of the total interference value of PCI is had no in Open Standard, so
Each producer generally has the PCI of oneself always to interfere value calculating method, when the total interference value assessment of the PCI obtained using existing method is complete
When netting the quality of PCI, it can have the following deficiencies:
(1) assessment PCI quality method is mechanical: between two cell of embodiment that can only be mechanical with the presence or absence of mod3, mod6 and
Mod30 conflict, but the size of disturbance degree cannot be assessed.Such as two correlation between cell be 1% and two correlations between cell
It is 80%, it is assumed that there is the interference of mod 3, the disturbance degree for being 80% to correlation between two cells is obviously much larger than to two cells
Between correlation only have 1% disturbance degree；
(2) assessment PCI quality method is unilateral: if all associated cells conflict necessarily without mod3, mod6, mod30
Preferably, but complicated network environment not can avoid the presence of all kinds of conflicts, in the case where not can avoid conflict, current technology
Scheme can not determine distribution PCI be single mod3 conflict good or list mod6 conflict get well should list mod30 conflict.
Summary of the invention
Based on this, it is necessary in view of the above-mentioned problems, providing a kind of based on the co-frequency cell related coefficient acquisition total interference value of PCI
Method and apparatus, can effectively solve the problem that the excessively mechanical and unilateral defect of existing assessment PCI quality method.
In order to achieve the above object, the technical solution adopted by the present invention is as follows:
A method of the total interference value of PCI is obtained based on co-frequency cell related coefficient, 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 serving cell and detect the serving cell
Homogeneous-frequency adjacent-domain co-frequency cell related coefficient；
The total interference value of PCI of the serving cell is obtained according to the co-frequency cell related coefficient and PCI interference coefficient.
A kind of device obtaining the total interference value of PCI based on co-frequency cell related coefficient, 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 the co-frequency cell related coefficient that serving cell detects the homogeneous-frequency adjacent-domain of the serving cell；
The total interference value of PCI obtains module, for according to the co-frequency cell related coefficient and the acquisition of PCI interference coefficient
The total interference value of the PCI of serving cell.
It is mutual with the prior art the present invention is based on the method and apparatus that co-frequency cell related coefficient obtains the total interference value of PCI
When comparing, have following advantages:
(1) present invention solves the problems, such as that existing assessment PCI mass is excessively mechanical: the present invention by PCI interference coefficient with
Related coefficient (SSsn) be multiplied, obtain each single pair interference value, fully demonstrated when A cell not can avoid with B, C, D one of them
When mod3 conflict occurs for cell, which is distributed and conflicts cell mod3 more for advantage；
(2) present invention solves the problems, such as that existing assessment PCI mass is excessively unilateral: by PCI mod3, mod6, mod30
Interference coefficient and related coefficient (SSsn) be multiplied and add up again, it can be pin-pointed to which PCI actually belongs to optimal, can fully assess
PCI quality condition and the fine or not variation degree for turning over PCI mass before and after PCI.
Detailed description of the invention
Fig. 1 is the process signal for the embodiment of the method that the total interference value of PCI is obtained the present invention is based on co-frequency cell related coefficient
Figure；
Fig. 2 is the structural representation that the Installation practice of the total interference value of PCI is obtained the present invention is based on co-frequency cell related coefficient
Figure；
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 serving cell and detect the clothes
The co-frequency cell related coefficient of the homogeneous-frequency adjacent-domain for cell of being engaged in；
S170, it is always interfered according to the PCI that the co-frequency cell related coefficient and PCI interference coefficient obtain the serving cell
Value.
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.
In step S170, in one embodiment, the PCI that the serving cell can be obtained according to following expressions is total
Interference value:
Wherein, sum (M3R, M6R, M30R)mFor the PCI interference coefficient of serving cell and the homogeneous-frequency adjacent-domain m of serving cell；
(SSsn)mFor the co-frequency cell related coefficient of serving cell and the homogeneous-frequency adjacent-domain m of serving cell, SSsnS in subscript indicates service
Cell, n indicate homogeneous-frequency adjacent-domain；M3R is the interference coefficient of PCI mod3, and M6R is the interference coefficient of PCI mod6, M30R PCI
The interference coefficient of mod30, is defined as follows:
Cell mod3 interference coefficient (M3R): as mod (PCI1,3)=mod (PCI2,3), value 1；
Cell mod6 interference coefficient (M6R): as mod (PCI1,6)=mod (PCI2,6), value 0.8；
Cell mod30 interference coefficient (M30R): as mod (PCI1,30)=mod (PCI2,30), value 0.1.
Other cells, value 0.
It should be noted that above-mentioned is only to the specific example of the value of M3R, M6R and M30R, the present invention is not to them
Value make restriction, they can also be arranged to other numerical value as needed by user.
The preparation method of the total interference value of PCI in order to better understand the present invention is carried out below by a specific embodiment
Explanation.
Assuming that cell A has N number of homogeneous-frequency adjacent-domain, N number of homogeneous-frequency adjacent-domain is respectively cell B, cell C, (sum is cell D ...
N)。
Cell A → cell B interference value is equal to cell A and detects the co-frequency cell related coefficient of cell B, be multiplied by cell A and
The interference coefficient of cell B.If cell A and cell B exist simultaneously PCI mod3 conflict, PCI mod6 conflict and PCI mod30
Conflict, then interference coefficient is 1+0.8+0.1, and other situations are similar, and it will not be described here.
Cell A → cell C interference value is equal to cell A and detects the co-frequency cell related coefficient of cell C, be multiplied by cell A and
The interference coefficient of cell C.If cell A and cell C exist simultaneously PCI mod3 conflict and PCI mod6 conflict, interference coefficient
For 1+0.8, other situations are similar, and it will not be described here.
……
So analogize, then then obtained interference value can add up, obtain with the interference value of cell A and all co-frequency cells
To the total interference value of PCI of cell A.
Based on the same inventive concept, the present invention also provides one kind obtains the total interference value of PCI based on co-frequency cell related coefficient
Device, 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 device for obtaining the total interference value of PCI based on co-frequency cell related coefficient, 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 the co-frequency cell related coefficient that serving cell detects the homogeneous-frequency adjacent-domain of the serving cell；
The total interference value of PCI obtains module 170, for being obtained according to the co-frequency cell related coefficient and PCI interference coefficient
The total interference value of the PCI of the serving cell.
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 160 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.
In one embodiment, the total interference value of the PCI, which obtains module 170, can obtain the clothes according to following expressions
The total interference value of PCI for cell of being engaged in:
Wherein, sum (M3R, M6R, M30R)mFor the PCI interference coefficient of serving cell and the homogeneous-frequency adjacent-domain m of serving cell,
M3R is the interference coefficient of PCI mod3, and M6R is the interference coefficient of PCI mod6, and M30R is the interference coefficient of PCI mod30,
(COsn)mFor the co-frequency cell related coefficient of serving cell and the homogeneous-frequency adjacent-domain m of serving cell, COsnS in subscript indicates service
Cell, n indicate homogeneous-frequency adjacent-domain.
It is mutual with the prior art the present invention is based on the method and apparatus that co-frequency cell related coefficient obtains the total interference value of PCI
When comparing, have following advantages:
(1) present invention solves the problems, such as that existing assessment PCI mass is excessively mechanical: the present invention by PCI interference coefficient with
Related coefficient (SSsn) be multiplied, it obtains single pair interference value, has fully demonstrated when A cell not can avoid and the one of cell of B, C, D
When mod3 conflict occurs, which is distributed and conflicts cell mod3 more for advantage；
(2) present invention solves the problems, such as that existing assessment PCI mass is excessively unilateral: by PCI mod3, mod6, mod30
Interference coefficient and related coefficient (SSsn) be multiplied and add up again, it can be pin-pointed to which PCI actually belongs to optimal, can fully assess
PCI quality condition and the fine or not variation degree for turning over PCI mass before and after PCI.
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 (8)
1. a kind of method for obtaining the total interference value of PCI based on co-frequency cell related coefficient, 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 within a preset range
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 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 serving cell and detect the same of the serving cell
The co-frequency cell related coefficient of frequency adjacent area；
The total interference value of PCI of the serving cell is obtained according to the co-frequency cell related coefficient and PCI interference 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；
It is described to 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；
MR is measurement report.
2. the method according to claim 1 for obtaining the total interference value of PCI based on co-frequency cell related coefficient, feature exist
Include: in, the step of determining main service road coverage cell according to the frequency sweep data of road
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 a default continuous sampled point, first sampled point in the first continuous sampling point section is the starting sample
Next sampled point of point；
If so, the RSRP for detecting the road coverage cell respectively is in each sampled point in the second continuous sampling point section
No to be all satisfied preset condition, wherein the second continuous sampling point section includes default continuous sampled point, described second connects
First sampled point in continuous sampled point section is the next of the last one sampled point in the first continuous sampling point section
Sampled point；If the preset condition include: in a sampled point the strongest cell of signal strength be the road coverage cell
Alien-frequency district, the RSRP of the road coverage cell is greater than signal strength threshold；Alternatively, if signal is strong in a sampled point
Spend the alien-frequency district that strongest cell is the road coverage cell, the RSRP of the alien-frequency district and the road coverage cell
RSRP difference less than the second preset threshold；Alternatively, if the strongest cell of signal strength is the road in a sampled point
The difference of the RSRP 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
Value is less than third predetermined threshold value；
If satisfied, determining the road coverage cell for main service road coverage cell.
3. the method according to claim 1 for obtaining the total interference value of PCI based on co-frequency cell related coefficient, feature exist
In,
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. according to claim 1 to the side for obtaining the total interference value of PCI described in 3 any one based on co-frequency cell related coefficient
Method, which is characterized in that the total interference value of PCI that the serving cell is obtained according to following expressions:
Wherein, sum (M3R, M6R, M30R)mFor the PCI interference coefficient of serving cell and the homogeneous-frequency adjacent-domain m of serving cell, M3R is
The interference coefficient of PCI mod3, M6R are the interference coefficient of PCI mod6, and M30R is the interference coefficient of PCI mod30, (COsn)mFor
The co-frequency cell related coefficient of the homogeneous-frequency adjacent-domain m of serving cell and serving cell.
5. a kind of device for obtaining the total interference value of PCI based on co-frequency cell related coefficient 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
The sub-sampling point of first RSRP difference within a preset range 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 applying for number and the clothes to cutting out for homogeneous-frequency adjacent-domain in preset range according to serving cell
Business 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
Serving cell detects the co-frequency cell related coefficient of the homogeneous-frequency adjacent-domain of the serving cell；
The total interference value of PCI obtains module, for obtaining the service according to the co-frequency cell related coefficient and PCI interference coefficient
The total interference value of the PCI of cell；
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；
It is described to 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；
MR is measurement report.
6. the device according to claim 5 for being obtained the total interference value of PCI based on co-frequency cell related coefficient, feature are existed
In the main service road coverage cell obtains module and 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 sampled point, and first in the first continuous sampling point section is adopted
Sampling 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 sampled point, and first sampled point in the second continuous sampling point section is described first
Next sampled point of the last one sampled point in continuous sampling point section；If the preset condition includes: in a sampled point
The middle strongest cell of signal strength is the alien-frequency district of the road coverage cell, and the RSRP of the road coverage cell is greater than letter
Number intensity threshold；Alternatively, if the strongest cell of signal strength is that the alien frequencies of the road coverage cell is small in a sampled point
The difference of the RSRP of area, 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 one sampled point, and signal strength is strongest with frequency
The difference of the RSRP of adjacent area 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.
7. the device according to claim 5 for being obtained the total interference value of PCI based on co-frequency cell related coefficient, feature are existed
In,
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.
8. the dress of the total interference value of PCI is obtained based on co-frequency cell related coefficient according to claim 5 to 7 any one
It sets, which is characterized in that the total interference value of PCI obtains module and always done according to the PCI that following expressions obtains the serving cell
Disturb value:
Wherein, sum (M3R, M6R, M30R)mFor the PCI interference coefficient of serving cell and the homogeneous-frequency adjacent-domain m of serving cell, M3R is
The interference coefficient of PCI mod3, M6R are the interference coefficient of PCI mod6, and M30R is the interference coefficient of PCI mod30, (COsn)mFor
The co-frequency cell related coefficient of the homogeneous-frequency adjacent-domain m of serving cell and serving cell.
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