CN106211209A - The method and apparatus obtaining the total interference value of PCI based on co-frequency cell correlation coefficient - Google Patents
The method and apparatus obtaining the total interference value of PCI based on co-frequency cell correlation coefficient Download PDFInfo
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Abstract
The present invention relates to a kind of method and apparatus obtaining the total interference value of PCI based on co-frequency cell correlation coefficient.Described method includes step: obtain co-frequency cell MR detection ratio according to MR data；Frequency sweep data according to road determine main service road coverage cell；Total sampled point according to coverage cell, main service channel and RSRP difference sub sampling point in preset range, it is thus achieved that co-frequency cell Road Detection ratio；Maximum in co-frequency cell MR detection ratio and co-frequency cell Road Detection ratio is defined as co-frequency cell detection ratio；Acquisition cuts out ratio, according to co-frequency cell detection ratio and cut out ratio, it is thus achieved that co-frequency cell correlation coefficient；The total interference value of PCI of described Serving cell is obtained according to described co-frequency cell correlation coefficient and PCI interference coefficient.The present invention can effectively solve the problem that the defect that existing assessment PCI quality method is the most mechanical and unilateral.
Description
Technical field
The present invention relates to LTE (Long Term Evolution, the Long Term Evolution of universal mobile communications technology) network technology
Field, particularly relates to a kind of method based on the co-frequency cell correlation coefficient acquisition total interference value of PCI and one based on the least with frequency
District's correlation coefficient obtains the device of the total interference value of PCI.
Background technology
PCI (physical-layer Cell identity, Physical Cell Identifier) is for distinguishing the wireless of different districts
Signal, span is 0-503.PCI plans and typically follows following constraints at present:
(1) under same base station, the PCI mould 3 of different districts is different, i.e. mod (PCI1,3) ≠ mod (PCI2,3)；
(2) residual value of neighbor cell PCI mould 6 is different, i.e. mod (PCI1,6) ≠ mod (PCI2,6)；
(3) PCI between all adjacent areas, i.e. PCI1) ≠ PCI2；
(4) neighbor cell PCI mould 30 residual value is different, i.e. mod (PCI1,30) ≠ mod (PCI2,30).
Although all kinds of conflict should be avoided during PCI planning as far as possible, but due to the complexity of reality network environment, should in reality
All kinds of conflict always can be there is in.The most general PCI mod3 of passing through conflicts, PCI mod6 conflicts and PCI mod30 conflict is commented
Estimate the quality of LTE network.The interference that all kinds of conflicts can be assessed is as follows:
(1) PCI mod3 conflict is used for assessing P-SS interference: PCI=3*Group ID (S-SS)+Sector in LTE network
ID (P-SS), if PCI mod3 value is identical, then will result in the interference of P-SS；
(2) PCI mod6 conflict is used for assessing descending RS (Reference Signal, reference signal) interference: in time domain position
Putting in the case of fixing, downlink reference signal has 6 freq shift (frequency shift (FS)) at frequency domain, if PCI mod6 value phase
With, interfering of descending RS can be caused；
(3) PCI mod30 conflict is used for assessing up DMRS (user's DRS (Dedicated Reference Signal)) and SRS (Sounding
Reference Signal, Sounding Reference Signal) interference of signal: at PUSCH (Physical Uplink Shared
Channel, Physical Uplink Shared Channel) in carry the information of DMRS and SRS, the two reference signal channel is estimated and
Demodulating extremely important, they are the ZC Sequence composition basic by 30 groups, i.e. have 30 groups of different combined sequence, if PCI
Mod30 value is identical, then that can cause up DM-RS and SRS interferes (under a TXantenna).
The actual application of all kinds of interference the most individually embodies, Open Standard there is no the definition of the total interference value of PCI, so
Typically there are the PCI total interference value computational methods of oneself in each producer, when the PCI total interference value assessment using existing method to obtain is complete
During the quality of net PCI, following defect can be there is:
(1) assessment PCI quality method machinery: can only machinery embodiment two community between whether exist mod3, mod6 and
Mod30 conflicts, but can not assess the size of disturbance degree.Such as between two communities, dependency is 1% and two dependency between community
It is 80%, it is assumed that all there is mod 3 and disturb, to the disturbance degree that dependency between two communities is 80% substantially much larger than to two communities
Between dependency only have 1% disturbance degree；
(2) assessment PCI quality method is unilateral: if all conflicting necessarily without mod3, mod6, mod30 in all associated cell
Preferably, but the network environment of complexity cannot avoid the existence of all kinds of conflict, in the case of cannot avoiding conflict, and current technology
Scheme cannot determine that distribution PCI is that single mod3 conflicts good or single mod6 conflicts and conflicts by single mod30.
Summary of the invention
Based on this, it is necessary to for the problems referred to above, it is provided that a kind of based on the co-frequency cell correlation coefficient acquisition total interference value of PCI
Method and apparatus, it is possible to effectively solve the defect that existing assessment PCI quality method is the most mechanical and unilateral.
In order to achieve the above object, the technical scheme that the present invention takes is as follows:
A kind of method obtaining the total interference value of PCI based on co-frequency cell correlation coefficient, including step:
Co-frequency cell MR detection ratio is obtained according to MR data；
Frequency sweep data according to road determine that main service road coverage cell, wherein said main service road coverage cell are
The community that signal intensity is the strongest in the starting sample point of described frequency sweep data；
Total sampled point according to coverage cell, described main service channel and RSRP difference son in preset range
Sampled point, it is thus achieved that co-frequency cell Road Detection ratio, a wherein said RSRP difference is coverage cell, described main service channel
The difference of RSRP of homogeneous-frequency adjacent-domain of RSRP and coverage cell, described main service channel；
Maximum in described co-frequency cell MR detection ratio and described co-frequency cell Road Detection ratio is defined as same
Frequently cell detection ratio；
According to Serving cell, homogeneous-frequency adjacent-domain in preset range is cut out application number and described Serving cell to all with frequency
Sum is applied in cutting out of adjacent area, it is thus achieved that cut out ratio；
According to described co-frequency cell detection ratio with described cut out ratio, it is thus achieved that Serving cell detects described Serving cell
The co-frequency cell correlation coefficient of homogeneous-frequency adjacent-domain；
The total interference value of PCI of described Serving cell is obtained according to described co-frequency cell correlation coefficient and PCI interference coefficient.
A kind of device obtaining the total interference value of PCI based on co-frequency cell correlation coefficient, including:
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, little for determining that main service road covers according to the frequency sweep data of road
District, wherein said main service road coverage cell is the strongest little of signal intensity in the starting sample point of described frequency sweep data
District；
Co-frequency cell Road Detection ratio obtains module, for the total sampled point according to coverage cell, described main service channel
And a RSRP difference sub sampling point in preset range, it is thus achieved that co-frequency cell Road Detection ratio, wherein said first
RSRP difference is the RSRP homogeneous-frequency adjacent-domain with coverage cell, described main service channel of coverage cell, described main service channel
The difference of RSRP；
Co-frequency cell detection ratio obtains module, for by described co-frequency cell MR detection ratio and road, described co-frequency cell
Maximum in the detection ratio of road is defined as co-frequency cell detection ratio；
The ratio that cuts out obtains module, for homogeneous-frequency adjacent-domain in preset range cutting out application number and institute according to Serving cell
State Serving cell and all homogeneous-frequency adjacent-domains are cut out application sum, it is thus achieved that cut out ratio；
Co-frequency cell correlation coefficient obtains module, for according to described co-frequency cell detection ratio with described cut out ratio,
Obtain the co-frequency cell correlation coefficient that Serving cell detects the homogeneous-frequency adjacent-domain of described Serving cell；
The total interference value of PCI obtains module, for obtaining described according to described co-frequency cell correlation coefficient and PCI interference coefficient
The total interference value of PCI of Serving cell.
The method and apparatus that the present invention obtains the total interference value of PCI based on co-frequency cell correlation coefficient, mutual with prior art
Time relatively, possess advantages below:
(1) problem that the present invention solves existing assessment PCI mass excessively machinery: the present invention by PCI interference coefficient and
Correlation coefficient (SSsn) be multiplied, draw each single pair of interference value, fully demonstrated when A community cannot avoid with B, C, D one of them
When community occurs mod3 conflict, which distributes community mod3 is conflicted more for advantage；
(2) present invention solves the problem that existing assessment PCI mass is the most unilateral: by PCI mod3, mod6, mod30
Interference coefficient and correlation coefficient (SSsn) be multiplied and add up again, which PCI actually can be pin-pointed to and belong to optimum, can comprehensive assessment
PCI quality condition and turn over the intensity of variation of the quality of PCI mass before and after PCI.
Accompanying drawing explanation
Fig. 1 is the flow process signal that the present invention obtains the embodiment of the method for the total interference value of PCI based on co-frequency cell correlation coefficient
Figure；
Fig. 2 is the structural representation that the present invention obtains the device embodiment of the total interference value of PCI based on co-frequency cell correlation coefficient
Figure；
Fig. 3 is the structural representation that co-frequency cell of the present invention MR detection ratio obtains module embodiments；
Fig. 4 is the structural representation that coverage cell, the present invention main service channel obtains module embodiments；
Fig. 5 is the structural representation that co-frequency cell of the present invention Road Detection ratio obtains module embodiments one；
Fig. 6 is the structural representation that co-frequency cell of the present invention Road Detection ratio obtains module embodiments two.
Detailed description of the invention
By further illustrating the technological means and the effect of acquirement that the present invention taked, below in conjunction with the accompanying drawings and the most real
Execute example, to technical scheme, carry out clear and complete description.It should be noted that literary composition occurs first, second
It is only used for distinguishing same technical characteristic Deng wording, the order of technical characteristic and quantity etc. is not limited.
As it is shown in figure 1, a kind of co-frequency cell based on LTE network detection ratio preparation method, including step:
S110, obtain co-frequency cell MR detection ratio according to MR data；
S120, frequency sweep data according to road determine main service road coverage cell, and wherein said main service road covers
Community is the community that signal intensity is the strongest in the starting sample point of described frequency sweep data；
S130, according to total sampled point of coverage cell, described main service channel and a RSRP difference in preset range
Sub sampling point, it is thus achieved that co-frequency cell Road Detection ratio, a wherein said RSRP difference be described main service channel cover
The difference of the RSRP of community and the RSRP of the homogeneous-frequency adjacent-domain of coverage cell, described main service channel；
S140, the maximum in described co-frequency cell MR detection ratio and described co-frequency cell Road Detection ratio is determined
For co-frequency cell detection ratio；
S150, according to Serving cell homogeneous-frequency adjacent-domain in preset range cut out application number and described Serving cell to all
Sum is applied in cutting out of homogeneous-frequency adjacent-domain, it is thus achieved that cut out ratio；
S160, according to described co-frequency cell detection ratio with described cut out ratio, it is thus achieved that Serving cell detects described clothes
The co-frequency cell correlation coefficient of the homogeneous-frequency adjacent-domain of business community；
S170, the PCI obtaining described Serving cell according to described co-frequency cell correlation coefficient and PCI interference coefficient always disturb
Value.
In step s 110, co-frequency cell MR detection ratio (SSsnm): Serving cell (main plot) s detects homogeneous-frequency adjacent-domain
N number, accounts for all adjacent areas number of times ratio that Serving cell s detects, wherein SS represents signal intensity, and the s in subscript represents clothes
Business community, the n in subscript represents the homogeneous-frequency adjacent-domain of Serving cell, and the m in subscript represents MR data.
SSsnmCan calculate according to existing Calculation of correlation factor method in prior art, i.e. SSsnm=Serving cell
The overall measurement number of reports of the measurement report number in scell detection homogeneous-frequency adjacent-domain ncell 6dB/Serving cell detection.The method meter
Calculate level of signal strength gap relatively big, SSsnmDegree of accuracy the highest, it is impossible to the degree of association between proper reflection community.
For drawbacks described above, existing Calculation of correlation factor formula is modified by the present invention.So, an embodiment
In, step S110 may include that
S1101, obtain the overall measurement number of reports that detects of Serving cell according to MR data, and the 2nd RSRP difference is the
The first measurement report number in one preset range and the second measurement report number in the second preset range, wherein said second
RSRP difference is the difference of the RSRP and the RSRP of the homogeneous-frequency adjacent-domain of described Serving cell of described Serving cell；
S1102, according to expression formula: co-frequency cell MR detection ratio=(described first measurement report number/described overall measurement report
Accuse number) the * the first preset constant+(described second measurement report number/described overall measurement number of reports) * the second preset constant, it is thus achieved that with
Frequently community MR detection ratio.
First preset range and the second preset range can determine according to actual needs, and the such as first preset range is for being less than
Equal to the scope of 3dB, the second preset range is the scope being more than 3dB less than or equal to 6dB.First preset constant and second is often preset
Number is empirical, and wherein the first preset constant can be the numerical value in 1～1.2 intervals, and the preferably 1.2, second preset constant can
Think the numerical value in 0.8～1 interval, preferably 1.MR detection ratio by stages, revised co-frequency cell calculates, and considers
The weight coefficient in each interval, result is the most accurate, the dependency between properer reflection community.
In a specific embodiment, the SS of correctionsnm(Serving cell in=Serving cell detection homogeneous-frequency adjacent-domain 3dB
RSRP-homogeneous-frequency adjacent-domain 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
In 6dB, 3dB outer (Serving cell RSRP-homogeneous-frequency adjacent-domain RSRP is less than waiting 6dB and more than 3dB) measurement report number/overall measurement reports
Number.
In the step s 120, current LTE outdoor frequency range includes D frequency and F frequency, and wherein D frequency comprises tri-frequencies of D1, D2 and D3
Point, F frequency comprises bis-frequencies of F1 and F2.Owing to Backend parameter is arranged, if D1 frequency is more than-92dBm on real road
(decibel milli X), substantially by D1 frequency covering path.
Main service road coverage cell can determine according to various ways, such as, in each sampled point, and signal intensity one
As be to arrange from big to small, if the signal intensity of a community is being adopted from first starting sample point to N continuous below
In sampling point, signal intensity all makes number one, then this community is main service road coverage cell, i.e. top community.N can root
Arranging according to needs, such as arranging N is the 13rd sampled point, then if a community is from the 1st sampled point to the 13rd sampling
The signal intensity of point all makes number one, and Ze Gai community is main service road coverage cell.Furthermore it is possible to it is secondary strong in regulation 3dBm
Co-frequency cell is time service road coverage cell.
When calculating continuous sampling point, the above-mentioned method determining main service road coverage cell is crossed with harshness, does not considers reality
Border switching condition, can lose non-the strongest time but continuous sampling point partial dot should be belonged to.So, in one embodiment, step
S120 may include that
S1201, will to comprise D1 frequency and RSRP in the starting sample point (i.e. the 1st sampled point) of described frequency sweep data maximum
Community be defined as road coverage cell；
Road coverage cell is mainly determined by first community of frequency sweep data starting sample point, if first sampled point
Zhong Yige community is containing D1 frequency, and signal intensity is the strongest, then this community is road coverage cell.The most true in view of signal
Qualitative, a sampled point is likely to be due to burst and wafts, so this most main service road in road coverage cell cannot be determined
Coverage cell, needs comprehensive sampled point below to judge whether this road coverage cell is main service road coverage cell.
S1202, in interval each sampled point of the first continuous sampling point, detect described road coverage cell respectively
Whether the difference of the RSRP of the homogeneous-frequency adjacent-domain of RSRP and described road coverage cell is all higher than the first predetermined threshold value, and wherein said the
One continuous sampling interval comprises presets a continuous print sampled point, and first sampled point in described first continuous sampling point interval is
The next sampled point of described starting sample point；
In first continuous sampling point interval, each sampled point is continuous print, such as the sampling in the first continuous sampling point interval
Point is followed successively by the 2nd sampled point, the 3rd sampled point, the 4th sampled point ..., the 10th sampled point, the order root of sampled point
Determine according to the sampling time.First predetermined threshold value can determine according to actual needs, such as, be set to 3dB.In the first continuous sampling
In each sampled point in some interval, difference is required to more than the first predetermined threshold value.As a example by the 10th sampled point, road covers
The RSRP of community needs stronger more than 3dB than homogeneous-frequency adjacent-domain, just carries out follow-up judgement.
S1203, if so, in interval each sampled point of the second continuous sampling point, detect described road respectively and cover little
It is pre-conditioned whether the RSRP in district is satisfied by, and wherein said second continuous sampling point interval comprises presets a continuous print sampled point,
First sampled point in described second continuous sampling point interval is last sampling in described first continuous sampling point interval
The next sampled point of point；
Each sampled point in second continuous sampling interval is continuous print, such as the sampling in the first continuous sampling point interval
Point is followed successively by the 2nd sampled point, the 3rd sampled point ..., the 10th sampled point, the sampled point that second continuous sampling is interval
It is followed successively by the 11st sampled point, the 12nd sampled point and the 13rd sampled point.
In one embodiment, described pre-conditioned include: (condition 1) is if signal intensity is the strongest in a sampled point
Community is the alien-frequency district of described road coverage cell, and the RSRP of described road coverage cell is more than signal strength threshold, signal
Intensity threshold can be arranged according to practical situation, and such as signal strength threshold could be arranged to-92dBm；Or, (condition 2) if
The community that signal intensity is the strongest in a sampled point is the alien-frequency district of described road coverage cell, described alien-frequency district
The difference of RSRP and the RSRP of described road coverage cell is less than the second predetermined threshold value, and the second predetermined threshold value can be according to actual need
It is configured, such as, is set to 6dB；Or, (condition 3) is if the community that signal intensity is the strongest in a sampled point is described
The RSRP's of the homogeneous-frequency adjacent-domain of road coverage cell, the RSRP of the homogeneous-frequency adjacent-domain that signal intensity is the strongest and described road coverage cell
Difference is less than the 3rd predetermined threshold value, and the 3rd predetermined threshold value can be arranged according to actual needs, such as, be set to 3dB.For the 3rd
Condition, with an example explanation, after road coverage cell reaches the most strongly continuous 2 sampled points, at the 3rd sampled point road
Cell signals coverage intensity becomes secondary strong, but than the strongest with in the frequency sampling weak 3dB of point, the most also it is believed that cover continuously.
As long as the RSRP of road coverage cell meets any one condition in three above condition, even if adopting at some
In sampling point, the RSRP of road coverage cell is not top, should be calculated as covering continuously yet, can regard as the TOP occurred continuously
Sampled point.
If S1204 meets, described road coverage cell is defined as main service road coverage cell.
In step s 130, co-frequency cell Road Detection ratio SSsnrIt it is i.e. the road interference mould set up according to frequency sweep data
Type, the deduction that it is road quality provides sound assurance.SSsnrIn SS represent signal intensity, the s in subscript represents main clothes
Business road coverage cell, the n in subscript represents the homogeneous-frequency adjacent-domain of main service road coverage cell, and the r in subscript represents that road is swept
Frequency evidence.
SSsnrCan obtain according to various ways, illustrate below in conjunction with two embodiments.
In one embodiment, step S130 may include that
S1301, obtain total sampled point of coverage cell, main service channel, and a RSRP according to the frequency sweep data of road
The difference the 3rd sub sampling point in the 5th preset range；
S1302, ratio according to described 3rd sub sampling point Yu described total sampled point, it is thus achieved that co-frequency cell Road Detection ratio
Example.
5th preset range can determine according to actual needs, and the such as the 5th preset range is the scope less than or equal to 6dB.
The method not by stages calculates, and the degree of accuracy obtained is relatively low.
In a specific embodiment, SSsnr=[A community, frequency sweep main service road coverage cell and the same frequency of A community
(RSRP-homogeneous-frequency adjacent-domain, A community RSRP is less than or equal to 6dB) sampled point/total sampled point in A community in the 6dB of adjacent area].
In another embodiment, step S130 includes:
S130-1, obtain total sampled point of coverage cell, main service channel, and first according to the frequency sweep data of road
The RSRP difference the first sub sampling point in the 3rd 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=(described first sub sampling point/described total sampling
Point) the * the three preset constant+(described second sub sampling point/described total sampled point) * the four preset constant, it is thus achieved that road, co-frequency cell
Road detection ratio.
3rd preset range and the 4th preset range can determine according to actual needs, and the such as the 3rd preset range is for being less than
Equal to the scope of 3dB, the second preset range is the scope being more than 3dB less than or equal to 6dB.3rd preset constant and the 4th is often preset
Number is empirical, a numerical value during wherein the 3rd preset constant can be 1～1.2 intervals, and the preferably 1.2, the 4th presets
Constant can be a numerical value in 0.8～1 interval, preferably 1.SSsnrBy stages calculates, and considers the power in each interval
Weight coefficient, result is the most accurate, the dependency between properer reflection road community.
In a specific embodiment, SSsnr=[A community, frequency sweep main service road coverage cell and the same frequency of A community
(RSRP-homogeneous-frequency adjacent-domain, A community RSRP is less than or equal to 3dB) sampled point/total sampled point in A community in the 3dB of adjacent area] * 1.2+ frequency sweep A is little
In district and homogeneous-frequency adjacent-domain 6dB, outside 3dB, (RSRP-homogeneous-frequency adjacent-domain, A community RSRP is less than or equal to 6dB and more than 3dB) sampled point/A is little
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
Community Road Detection ratio (SSsnr) maximum, computing formula is as follows:
Co-frequency cell detection ratio (SSsn)=MAX ((SSsnm),(SSsnr))
In step S150, in order to the trend of mobile terminal in reflection two communities, accurately embody cell edge position
Between relation, the present invention calculate correlation coefficient time further contemplate according to switch data (traffic statistics data), obtain according to switch data
Ratio must be cut out.
Cut out ratio (HOsn)=Serving cell S is to cutting out application number/Serving cell S to homogeneous-frequency adjacent-domain in preset range
All homogeneous-frequency adjacent-domains are cut out application sum.Such as cut out ratio=Serving cell S in the 6dB of homogeneous-frequency adjacent-domain (Serving cell S's
The RSRP of RSRP-homogeneous-frequency adjacent-domain is less than or equal to 6dB) cutting out application number/Serving cell S, that all homogeneous-frequency adjacent-domains cut out application is total
Number.
In step S160, co-frequency cell correlation coefficient obtains according to described co-frequency cell detection ratio and the described ratio that cuts out
?.
In one embodiment, co-frequency cell correlation coefficient CO can be obtained according to following formulasn:
Co-frequency cell correlation coefficient COsn=co-frequency cell detection ratio SSsn* the weights Kss+ of co-frequency cell correlation coefficient
Cut out ratio HOsn* cutting out the Kho of proportional weight, wherein Kho=1-Kss, Kss is empirical value.
In step S170, in one embodiment, can be total according to the PCI of the expressions below described Serving cell of acquisition
Interference value:
Wherein, sum (M3R, M6R, M30R)mPCI interference coefficient for the homogeneous-frequency adjacent-domain m of Serving cell and Serving cell；
(SSsn)mFor the co-frequency cell correlation coefficient of the homogeneous-frequency adjacent-domain m of Serving cell and Serving cell, SSsnS in subscript represents service
Community, n represents homogeneous-frequency adjacent-domain；M3R is the interference coefficient of PCI mod3, and M6R is the interference coefficient of PCI mod6, and M30R is PCI
The interference coefficient of mod30, is defined as follows:
Community mod3 interference coefficient (M3R): as mod (PCI1,3)=mod (PCI2,3), value is 1；
Community mod6 interference coefficient (M6R): as mod (PCI1,6)=mod (PCI2,6), value is 0.8；
Community mod30 interference coefficient (M30R): as mod (PCI1,30)=mod (PCI2,30), value is 0.1.
Other communities, value is 0.
Being only the concrete example of the value to M3R, M6R and M30R it should be noted that above-mentioned, the present invention is not to them
Value make restriction, they can also be arranged to other numerical value by user as required.
In order to be better understood from the preparation method of the total interference value of PCI of the present invention, carry out below by a specific embodiment
Explanation.
Assume that community A has N number of homogeneous-frequency adjacent-domain, N number of homogeneous-frequency adjacent-domain to be respectively community B, community C, community D ... (sum is
N)。
Community A → community B interference value detects the co-frequency cell correlation coefficient of community B equal to community A, be multiplied by community A and
The interference coefficient of community B.If there is PCI mod3 conflict, PCI mod6 conflict and PCI mod30 in community A and community B simultaneously
Conflict, then interference coefficient is 1+0.8+0.1, and other situation is similar to, and does not repeats them here.
Community A → community C interference value detects the co-frequency cell correlation coefficient of community C equal to community A, be multiplied by community A and
The interference coefficient of community C.If there is PCI mod3 conflict in community A and community C and PCI mod6 conflicts, then interference coefficient simultaneously
For 1+0.8, other situation is similar to, does not repeats them here.
……
And so on, Ze Keyi community A and the interference value of all co-frequency cells, then the interference value obtained is added up,
The total interference value of PCI to community A.
Based on same inventive concept, the present invention also provides for a kind of based on the co-frequency cell correlation coefficient acquisition total interference value of PCI
Device, below in conjunction with the accompanying drawings the detailed description of the invention of apparatus of the present invention is described in detail.
As in figure 2 it is shown, a kind of device obtaining the total interference value of PCI based on co-frequency cell correlation coefficient, including:
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, for determining that main service road covers according to the frequency sweep data of road
Lid community, wherein said main service road coverage cell is that signal intensity is the strongest in the starting sample point of described frequency sweep data
Community；
Co-frequency cell Road Detection ratio obtains module 130, for always adopting according to described coverage cell, main service channel
Sampling point and the RSRP difference sub sampling point in preset range, it is thus achieved that co-frequency cell Road Detection ratio, wherein said
Oneth RSRP difference is the RSRP homogeneous-frequency adjacent-domain with coverage cell, described main service channel of coverage cell, described main service channel
The difference of RSRP；
Co-frequency cell detection ratio obtains module 140, for by the least to described co-frequency cell MR detection ratio and described same frequency
Maximum in district's Road Detection ratio is defined as co-frequency cell detection ratio；
The ratio that cuts out obtains module 150, for homogeneous-frequency adjacent-domain in preset range being cut out application number according to Serving cell
With described Serving cell, all homogeneous-frequency adjacent-domains are cut out application sum, it is thus achieved that cut out ratio；
Co-frequency cell correlation coefficient obtains module 160, for according to described co-frequency cell detection ratio with described cut out ratio
Example, it is thus achieved that Serving cell detects the co-frequency cell correlation coefficient of the homogeneous-frequency adjacent-domain of described Serving cell；
The total interference value of PCI obtains module 170, for obtaining according to described co-frequency cell correlation coefficient and PCI interference coefficient
The total interference value of PCI of described Serving cell.
Co-frequency cell MR detection ratio obtains module 110 can be according to Calculation of correlation factor method existing in prior art
Obtain SSsnm, i.e. SSsnmMeasurement report number in=Serving cell scell detection homogeneous-frequency adjacent-domain ncell 6dB/Serving cell inspection
The overall measurement number of reports surveyed.But the method signal calculated intensity level gap is relatively big, SSsnmDegree of accuracy the highest, it is impossible to proper
Degree of association between reflection community.
For drawbacks described above, existing Calculation of correlation factor formula is modified by the present invention.So, an embodiment
In, may include that as it is shown on figure 3, described co-frequency cell MR detection ratio obtains module 110
Measurement report number obtains unit 1101, for obtaining, according to MR data, the overall measurement report that Serving cell detects
Number, and the 2nd RSRP difference the first measurement report number in the first preset range and the second survey in the second preset range
Amount number of reports, wherein said 2nd RSRP difference is the RSRP homogeneous-frequency adjacent-domain with described Serving cell of described Serving cell
The difference of RSRP；
Co-frequency cell MR detection ratio obtains unit 1102, for according to expression formula: co-frequency cell MR detection ratio=(institute
State the first measurement report number/described overall measurement number of reports) the * the first preset constant+(described second measurement report number/described total survey
Amount number of reports) the * the second preset constant, it is thus achieved that co-frequency cell MR detection ratio.
MR detection ratio by stages, revised co-frequency cell calculates, and considers the weight coefficient in each interval, result
The most accurate, between properer reflection community dependency.
Main service road coverage cell obtains module 120 can determine main service road coverage cell according to various ways,
Such as, in each sampled point, signal intensity is usually and arranges from big to small, if the signal intensity of a community is from first
Individual starting sample point all makes number one to signal intensity in N continuous sampled point below, then this community is main service
Road coverage cell, i.e. top community.N can be arranged as required to.
When calculating continuous sampling point, the above-mentioned method determining main service road coverage cell is crossed with harshness, does not considers reality
Border switching condition, can lose non-the strongest time but continuous sampling point partial dot should be belonged to.So, in one embodiment, such as Fig. 4
Shown in, described main service road coverage cell obtains module 120 and may include that
Road coverage cell determines unit 1201, for by the starting sample point of described frequency sweep data comprises D1 frequency and
Community maximum for RSRP is defined as road coverage cell；
Difference detector unit 1202, in each sampled point interval at the first continuous sampling point, detection is described respectively
Whether the difference of the RSRP of road coverage cell and the RSRP of the homogeneous-frequency adjacent-domain of described road coverage cell is all higher than first is preset
Threshold value, wherein said first continuous sampling interval comprises presets a continuous print sampled point, in described first continuous sampling point interval
The next sampled point that first sampled point is described starting sample point；
RSRP detector unit 1203, for when difference is all higher than the first predetermined threshold value, interval at the second continuous sampling point
Each sampled point in, whether the RSRP detecting described road coverage cell respectively is satisfied by pre-conditioned, wherein said second
Continuous sampling point interval comprises presets a continuous print sampled point, and first sampled point in described second continuous sampling point interval is
The next sampled point of last sampled point in described first continuous sampling point interval；
Main service road coverage cell determines unit 1204, for when RSRP is satisfied by pre-conditioned, by described road
Coverage cell is defined as main service road coverage cell.
In one embodiment, described pre-conditioned include: (condition 1) is if signal intensity is the strongest in a sampled point
Community is the alien-frequency district of described road coverage cell, and the RSRP of described road coverage cell is more than signal strength threshold, signal
Intensity threshold can be arranged according to practical situation, and such as signal strength threshold could be arranged to-92dBm；Or, (condition 2) if
The community that signal intensity is the strongest in a sampled point is the alien-frequency district of described road coverage cell, described alien-frequency district
The difference of RSRP and the RSRP of described road coverage cell is less than the second predetermined threshold value, and the second predetermined threshold value can be according to actual need
It is configured, such as, is set to 6dB；Or, (condition 3) is if the community that signal intensity is the strongest in a sampled point is described
The RSRP's of the homogeneous-frequency adjacent-domain of road coverage cell, the RSRP of the homogeneous-frequency adjacent-domain that signal intensity is the strongest and described road coverage cell
Difference is less than the 3rd predetermined threshold value, and the 3rd predetermined threshold value can be arranged according to actual needs, such as, be set to 3dB.
As long as the RSRP of road coverage cell meets any one condition in three above condition, even if adopting at some
In sampling point, the RSRP of road coverage cell is not top, should be calculated as covering continuously yet, can regard as the TOP occurred continuously
Sampled point.
Co-frequency cell Road Detection ratio obtains module 130 can obtain SS according to various wayssnr, such as, a reality
Execute in example, may include that as it is shown in figure 5, described co-frequency cell Road Detection ratio obtains module 130
Second sampled point obtains unit 1301, obtains coverage cell, main service channel for the frequency sweep data according to road
Total sampled point, and the 3rd sub sampling point that a RSRP difference is in the 5th preset range；
Second co-frequency cell Road Detection ratio obtains unit 1302, for according to described 3rd sub sampling point with described always
The ratio of sampled point, it is thus achieved that co-frequency cell Road Detection ratio.The method not by stages calculates, and it is accurate that the method obtains
Spend relatively low.
In another embodiment, as shown in Figure 6, described co-frequency cell Road Detection ratio acquisition module 130 can be wrapped
Include:
First sampled point obtains unit 130-1, obtains coverage cell, main service channel for the frequency sweep data according to road
Total sampled point, and the RSRP difference the first sub sampling point in the 3rd preset range and in the 4th preset range
Second sub sampling point；
First co-frequency cell Road Detection ratio obtains unit 130-2, for according to expression formula: co-frequency cell Road Detection
Ratio=(described first sub sampling point/described total sampled point) * the three preset constant+(described second sub sampling point/described is always adopted
Sampling point) the * the four preset constant, it is thus achieved that co-frequency cell Road Detection ratio.
SS in the methodsnrBy stages calculates, and considers the weight coefficient in each interval, and result is the most accurate, more sticks on
Cut the dependency between reflection road community.
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, co-frequency cell detection ratio obtain module 140 according to following computing formula obtain co-frequency cell detection
Ratio SSsn:
Co-frequency cell detection ratio (SSsn)=MAX ((SSsnm),(SSsnr))
In order to the trend of mobile terminal in reflection two communities, accurately embody the relation between cell edge position, this
Invent and further contemplate when calculating correlation coefficient according to switch data, obtain according to switch data and cut out ratio.Cut out ratio (HOsn)
=Serving cell S cuts out application to all homogeneous-frequency adjacent-domains to cutting out application number/Serving cell S to homogeneous-frequency adjacent-domain in preset range
Sum.
In one embodiment, described co-frequency cell correlation coefficient acquisition module 160 can obtain according to following formula
Co-frequency cell correlation coefficient COsn:
Co-frequency cell correlation coefficient COsn=co-frequency cell detection ratio SSsn* the weights Kss+ of co-frequency cell correlation coefficient
Cut out ratio HOsn* cutting out the Kho of proportional weight, wherein Kho=1-Kss, Kss is empirical value.
In one embodiment, the total interference value of described PCI obtains module 170 and can obtain described clothes according to expressions below
The total interference value of PCI of business community:
Wherein, sum (M3R, M6R, M30R)mFor the PCI interference coefficient of the homogeneous-frequency adjacent-domain m of Serving cell and 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 correlation coefficient of the homogeneous-frequency adjacent-domain m of Serving cell and Serving cell, COsnS in subscript represents service
Community, n represents homogeneous-frequency adjacent-domain.
The method and apparatus that the present invention obtains the total interference value of PCI based on co-frequency cell correlation coefficient, mutual with prior art
Time relatively, possess advantages below:
(1) problem that the present invention solves existing assessment PCI mass excessively machinery: the present invention by PCI interference coefficient and
Correlation coefficient (SSsn) be multiplied, draw single pair of interference value, fully demonstrated when A community cannot be avoided and one of them community of B, C, D
When there is mod3 conflict, which distributes community mod3 is conflicted more for advantage；
(2) present invention solves the problem that existing assessment PCI mass is the most unilateral: by PCI mod3, mod6, mod30
Interference coefficient and correlation coefficient (SSsn) be multiplied and add up again, which PCI actually can be pin-pointed to and belong to optimum, can comprehensive assessment
PCI quality condition and turn over the intensity of variation of the quality of PCI mass before and after PCI.
Each technical characteristic of embodiment described above can combine arbitrarily, for making description succinct, not to above-mentioned reality
The all possible combination of each technical characteristic executed in example is all described, but, as long as the combination of these technical characteristics is not deposited
In contradiction, all it is considered to be the scope that this specification is recorded.
Embodiment described above only have expressed the several embodiments of the present invention, and it describes more concrete and detailed, but also
Can not therefore be construed as limiting the scope of the patent.It should be pointed out that, come for those of ordinary skill in the art
Saying, without departing from the inventive concept of the premise, it is also possible to make some deformation and improvement, these broadly fall into the protection of the present invention
Scope.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. the method obtaining the total interference value of PCI based on co-frequency cell correlation coefficient, it is characterised in that include step:
Co-frequency cell MR detection ratio is obtained according to MR data；
Frequency sweep data according to road determine main service road coverage cell, and wherein said main service road coverage cell is in institute
State the community that in the starting sample point of frequency sweep data, signal intensity is the strongest；
Total sampled point according to coverage cell, described main service channel and RSRP difference sub sampling in preset range
Point, it is thus achieved that co-frequency cell Road Detection ratio, a wherein said RSRP difference is coverage cell, described main service channel
The difference of RSRP and the RSRP of the homogeneous-frequency adjacent-domain of coverage cell, described main service channel；
Maximum in described co-frequency cell MR detection ratio and described co-frequency cell Road Detection ratio is defined as with frequency little
District's detection ratio；
According to Serving cell, homogeneous-frequency adjacent-domain in preset range is cut out application number and described Serving cell to all homogeneous-frequency adjacent-domains
Cut out application sum, it is thus achieved that cut out ratio；
According to described co-frequency cell detection ratio with described cut out ratio, it is thus achieved that Serving cell detects the same of described Serving cell
Frequently the co-frequency cell correlation coefficient of adjacent area；
The total interference value of PCI of described Serving cell is obtained according to described co-frequency cell correlation coefficient and PCI interference coefficient.
The method obtaining the total interference value of PCI based on co-frequency cell correlation coefficient the most according to claim 1, its feature exists
In, the step obtaining co-frequency cell MR detection ratio according to MR data includes:
Obtain, according to MR data, the overall measurement number of reports that described Serving cell detects, and the 2nd RSRP difference is preset first
In the range of the first measurement report number and the second measurement report number in the second preset range, wherein said 2nd RSRP difference
Difference for the RSRP and the RSRP of the homogeneous-frequency adjacent-domain of described Serving cell of described Serving cell；
According to expression formula: co-frequency cell MR detection ratio=(described first measurement report number/described overall measurement number of reports) * the first
Preset constant+(described second measurement report number/described overall measurement number of reports) * the second preset constant, it is thus achieved that co-frequency cell MR examines
Survey ratio.
The method obtaining the total interference value of PCI based on co-frequency cell correlation coefficient the most according to claim 1, its feature exists
In, determine that according to the frequency sweep data of road the step of main service road coverage cell includes:
The community comprising D1 frequency and RSRP maximum in the starting sample point of described frequency sweep data is defined as road coverage cell；
In each sampled point that the first continuous sampling point is interval, detect the RSRP of described road coverage cell and described road respectively
Whether the difference of the RSRP of the homogeneous-frequency adjacent-domain of coverage cell, road is all higher than the first predetermined threshold value, wherein said first continuous sampling district
Between comprise and preset a continuous print sampled point, first sampled point in described first continuous sampling point interval is described starting sample
The next sampled point of point；
If so, in each sampled point in the second continuous sampling point interval, the RSRP detecting described road coverage cell respectively is
No being satisfied by pre-conditioned, wherein said second continuous sampling point interval comprises presets a continuous print sampled point, and described second even
First sampled point in continuous sampled point interval is the next one of last sampled point in described first continuous sampling point interval
Sampled point；Described pre-conditioned include: if the community that signal intensity is the strongest in a sampled point is described road coverage cell
Alien-frequency district, the RSRP of described road coverage cell be more than signal strength threshold；Or, if signal is strong in a sampled point
Spend the alien-frequency district that the strongest community is described road coverage cell, the RSRP of described alien-frequency district and described road coverage cell
The difference of RSRP less than the second predetermined threshold value；Or, if the community that signal intensity is the strongest in a sampled point is described road
The homogeneous-frequency adjacent-domain of coverage cell, road, the difference of the RSRP of the homogeneous-frequency adjacent-domain that signal intensity the is the strongest and RSRP of described road coverage cell
Value is less than the 3rd predetermined threshold value；
If meeting, described road coverage cell is defined as main service road coverage cell.
The method obtaining the total interference value of PCI based on co-frequency cell correlation coefficient the most according to claim 1, its feature exists
In,
Total sampled point according to coverage cell, described main service channel and RSRP difference sub sampling in preset range
Point, it is thus achieved that the step of co-frequency cell Road Detection ratio includes:
Frequency sweep data according to road obtain total sampled point of coverage cell, main service channel, and a RSRP difference is the 3rd
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=(described first sub sampling point/described total sampled point) * the three is preset
Constant+(described second sub sampling point/described total sampled point) * the four preset constant, it is thus achieved that co-frequency cell Road Detection ratio；
Or,
Total sampled point according to coverage cell, described main service channel and RSRP difference sub sampling in preset range
Point, it is thus achieved that the step of co-frequency cell Road Detection ratio includes:
Frequency sweep data according to road obtain total sampled point of coverage cell, main service channel, and a RSRP difference is the 5th
The 3rd sub sampling point in preset range；
Ratio according to described 3rd sub sampling point Yu described total sampled point, it is thus achieved that co-frequency cell Road Detection ratio.
5. according to the side obtaining the total interference value of PCI based on co-frequency cell correlation coefficient described in Claims 1-4 any one
Method, it is characterised in that according to the total interference value of PCI of the expressions below described Serving cell of acquisition:
Wherein, sum (M3R, M6R, M30R)mFor the PCI interference coefficient of the homogeneous-frequency adjacent-domain m of Serving cell and Serving cell, M3R is
The interference coefficient of PCI mod3, M6R is the interference coefficient of PCI mod6, and M30R is the interference coefficient of PCI mod30, (COsn)mFor
The co-frequency cell correlation coefficient of the homogeneous-frequency adjacent-domain m of Serving cell and Serving cell.
6. the device obtaining the total interference value of PCI based on co-frequency cell correlation coefficient, it is characterised in that including:
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, for determining main service road coverage cell according to the frequency sweep data of road,
Wherein said main service road coverage cell is the community that signal intensity is the strongest in the starting sample point of described frequency sweep data；
Co-frequency cell Road Detection ratio obtains module, for the total sampled point according to coverage cell, described main service channel and
Oneth RSRP difference sub sampling point in preset range, it is thus achieved that co-frequency cell Road Detection ratio, a wherein said RSRP
Difference is the RSRP RSRP with the homogeneous-frequency adjacent-domain of coverage cell, described main service channel of covering adjacent area, described main service channel
Difference；
Co-frequency cell detection ratio obtains module, for described co-frequency cell MR detection ratio and described co-frequency cell road being examined
Maximum in survey ratio is defined as co-frequency cell detection ratio；
The ratio that cuts out obtains module, for homogeneous-frequency adjacent-domain in preset range cutting out application number and described clothes according to Serving cell
Business community cuts out application sum to all homogeneous-frequency adjacent-domains, it is thus achieved that cut out ratio；
Co-frequency cell correlation coefficient obtains module, for according to described co-frequency cell detection ratio with described cut out ratio, it is thus achieved that
Serving cell detects the co-frequency cell correlation coefficient of the homogeneous-frequency adjacent-domain of described Serving cell；
The total interference value of PCI obtains module, for obtaining described service according to described co-frequency cell correlation coefficient and PCI interference coefficient
The total interference value of PCI of community.
The device obtaining the total interference value of PCI based on co-frequency cell correlation coefficient the most according to claim 6, its feature exists
In, described co-frequency cell MR detection ratio obtains module and includes:
Measurement report number obtains unit, for obtaining, according to MR data, the overall measurement number of reports that described Serving cell detects, with
And the 2nd the RSRP difference the first measurement report number in the first preset range and the second measurement report in the second preset range
Accusing number, wherein said 2nd RSRP difference is the RSRP RSRP with the homogeneous-frequency adjacent-domain of described Serving cell of described Serving cell
Difference；
Co-frequency cell MR detection ratio obtains unit, for according to expression formula: co-frequency cell MR detection ratio=(described first surveys
Amount number of reports/described overall measurement number of reports) the * the first preset constant+(described second measurement report number/described overall measurement report
Number) the * the second preset constant, it is thus achieved that co-frequency cell MR detection ratio.
The device obtaining the total interference value of PCI based on co-frequency cell correlation coefficient the most according to claim 6, its feature exists
In, described main service road coverage cell obtains module and includes:
Road coverage cell determines unit, for comprising D1 frequency and RSRP maximum in the starting sample point of described frequency sweep data
Community be defined as road coverage cell；
Difference detector unit, in each sampled point interval at the first continuous sampling point, detects described road respectively and covers
Whether the RSRP of community is all higher than the first predetermined threshold value, wherein with the difference of the RSRP of the homogeneous-frequency adjacent-domain of described road coverage cell
Described first continuous sampling interval comprises presets a continuous print sampled point, adopts for first in described first continuous sampling point interval
Sampling point is the next sampled point of described starting sample point；
RSRP detector unit, for when difference is all higher than the first predetermined threshold value, adopts at interval each of the second continuous sampling point
In sampling point, whether the RSRP detecting described road coverage cell respectively is satisfied by pre-conditioned, wherein said second continuous sampling
Point interval comprises presets a continuous print sampled point, and first sampled point in described second continuous sampling point interval is described first
The next sampled point of last sampled point in continuous sampling point interval；Described pre-conditioned include: if at a sampled point
The community that middle signal intensity is the strongest is the alien-frequency district of described road coverage cell, and the RSRP of described road coverage cell is more than letter
Number intensity threshold；Or, if the alien frequencies that the community that signal intensity is the strongest in a sampled point is described road coverage cell is little
District, the difference of the RSRP of described alien-frequency district and the RSRP of described road coverage cell is less than the second predetermined threshold value；Or, if
The community that in one sampled point, signal intensity is the strongest is the homogeneous-frequency adjacent-domain of described road coverage cell, the same frequency that signal intensity is the strongest
The difference of the RSRP of adjacent area and the RSRP of described road coverage cell is less than the 3rd predetermined threshold value；
Main service road coverage cell determines unit, for when RSRP is satisfied by pre-conditioned, by described road coverage cell
It is defined as main service road coverage cell.
The device obtaining the total interference value of PCI based on co-frequency cell correlation coefficient the most according to claim 6, its feature exists
In,
Described co-frequency cell Road Detection ratio obtains module and includes:
First sampled point obtains unit, obtains total sampling of coverage cell, main service channel for the frequency sweep data according to road
Point, and the RSRP difference the first sub sampling point in the 3rd preset range and the second son in the 4th preset range adopt
Sampling point；
First co-frequency cell Road Detection ratio obtains unit, for according to expression formula: co-frequency cell Road Detection ratio=(institute
State the first sub sampling point/described total sampled point) the * the three preset constant+(described second sub sampling point/described total sampled point) * the
Four preset constant, it is thus achieved that co-frequency cell Road Detection ratio；
Or,
Described co-frequency cell Road Detection ratio obtains module and includes:
Second sampled point obtains unit, obtains total sampling of coverage cell, main service channel for the frequency sweep data according to road
Point, and the 3rd sub sampling point that a RSRP difference is in the 5th preset range；
Second co-frequency cell Road Detection ratio obtains unit, for according to described 3rd sub sampling point and described total sampled point
Ratio, it is thus achieved that co-frequency cell Road Detection ratio.
10. according to the dress obtaining the total interference value of PCI based on co-frequency cell correlation coefficient described in claim 6 to 9 any one
Put, it is characterised in that the total interference value of described PCI obtains module and always does according to the PCI of the expressions below described Serving cell of acquisition
Disturb value:
Wherein, sum (M3R, M6R, M30R)mFor the PCI interference coefficient of the homogeneous-frequency adjacent-domain m of Serving cell and Serving cell, M3R is
The interference coefficient of PCI mod3, M6R is the interference coefficient of PCI mod6, and M30R is the interference coefficient of PCI mod30, (COsn)mFor
The co-frequency cell correlation coefficient of the homogeneous-frequency adjacent-domain m of Serving cell and Serving cell.
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