CN105933933A - Method and apparatus for obtaining PCI (physical-layer Cell identity) total interference value on basis of same-frequency cell detection ratio - Google Patents
Method and apparatus for obtaining PCI (physical-layer Cell identity) total interference value on basis of same-frequency cell detection ratio Download PDFInfo
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- CN105933933A CN105933933A CN201610503133.XA CN201610503133A CN105933933A CN 105933933 A CN105933933 A CN 105933933A CN 201610503133 A CN201610503133 A CN 201610503133A CN 105933933 A CN105933933 A CN 105933933A
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- H—ELECTRICITY
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Abstract
The invention relates to a method and apparatus for obtaining a PCI (physical-layer Cell identity) total interference value on the basis of a same-frequency cell detection ratio. The method comprises the steps of: according to MR (Measurement Report) data, obtaining a same-frequency cell MR detection ratio; according to frequency-sweep data of a road, determining a main service road coverage cell; according to a total sampling point of the main service road coverage cell and a sub sampling point of a first RSRP (Reference Signal Receiving Power) difference in a preset range, obtaining a same-frequency cell road detection ratio; determining the maximum value of the same-frequency cell MR detection ratio and the same-frequency cell road detection ratio as a same-frequency cell detection ratio of a same-frequency adjacent cell of a service cell, which is detected by the service cell; according to the same-frequency cell detection ratio and a PCI interference coefficient, obtaining the PCI total interference value of the service cell. The method and apparatus disclosed by the invention can effectively overcome the defect that an exiting PCI quality evaluation method is excessively mechanical and one-sided.
Description
Technical field
The present invention relates to LTE (Long Term Evolution, the Long Term Evolution of universal mobile communications technology) net
Network technical field, particularly relates to a kind of method obtaining the total interference value of PCI based on co-frequency cell detection ratio
With a kind of device obtaining the total interference value of PCI based on co-frequency cell detection ratio.
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,
The most always can there is all kinds of conflict.The most general by PCI mod3 conflict, PCI mod6
Conflict and the quality of PCI mod30 conflict assessment 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 in LTE network
(S-SS)+Sector ID (P-SS), if PCI mod3 value is identical, then will result in the dry of P-SS
Disturb；
(2) PCI mod6 conflict is used for assessing descending RS (Reference Signal, reference signal) interference:
In the case of time-domain position is fixing, downlink reference signal has 6 freq shift (frequency shift (FS)) at frequency domain,
If PCI mod6 value is identical, 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
The interference of (Sounding Reference Signal, Sounding Reference Signal) signal: at PUSCH
(Physical Uplink Shared Channel, Physical Uplink Shared Channel) carries DMRS and SRS
Information, the two reference signal for channel estimate and demodulate extremely important, they are basic by 30 groups
ZC Sequence composition, i.e. has 30 groups of different combined sequence, if PCI mod30 value is identical, then can make
Become up DM-RS's and SRS to interfere (under a TXantenna).
The actual application of all kinds of interference the most individually embodies, Open Standard there is no determining of the total interference value of PCI
Justice, so typically there are the PCI total interference value computational methods of oneself in each producer, obtains when using existing method
PCI total interference value when assessing the quality of the whole network PCI, can there is following defect:
(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 be 80%, it is assumed that all there is mod 3 and disturb, to dependency between two communities be
The disturbance degree of 80% is substantially much larger than dependency between two communities is only had the disturbance degree of 1%；
(2) assessment PCI quality method is unilateral: if all associated cell are all without mod3, mod6, mod30
Conflict is necessarily best, but the network environment of complexity cannot avoid the existence of all kinds of conflict, cannot avoid punching
In the case of Tu, current technology scheme cannot determine that distribution PCI is that single mod3 conflicts well or single mod6
Conflict is good should conflict 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 co-frequency cell detection ratio acquisition PCI
The method and apparatus of total interference value, it is possible to effectively solve existing assessment PCI quality method excessively machinery and sheet
The defect in face.
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 detection ratio, including 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 covers
Community is 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 a RSRP difference are in preset range
Interior sub sampling point, it is thus achieved that co-frequency cell Road Detection ratio, a wherein said RSRP difference is described
The RSRP of the homogeneous-frequency adjacent-domain of the RSRP of coverage cell, main service channel and coverage cell, described main service channel
Difference；
By true for the maximum in described co-frequency cell MR detection ratio and described co-frequency cell Road Detection ratio
It is set to the co-frequency cell detection ratio that Serving cell detects the homogeneous-frequency adjacent-domain of described Serving cell；
The PCI obtaining described Serving cell according to described co-frequency cell detection ratio and PCI interference coefficient always does
Disturb value.
A kind of device obtaining the total interference value of PCI based on co-frequency cell detection ratio, including:
Co-frequency cell MR detection ratio obtains module, for obtaining co-frequency cell MR inspection according to MR data
Survey ratio；
Main service road coverage cell obtains module, for determining main service road according to the frequency sweep data of road
Coverage cell, wherein said main service road coverage cell is to believe in the starting sample point of described frequency sweep data
Number community that intensity is the strongest；
Co-frequency cell Road Detection ratio obtains module, total for according to coverage cell, described main service channel
Sampled point and the 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 of coverage cell, described main service channel and described main clothes
The difference of the RSRP of the homogeneous-frequency adjacent-domain of business passage coverage cell；
Co-frequency cell detection ratio obtains module, for by described co-frequency cell MR detection ratio and described with
Frequently the maximum in community Road Detection ratio is defined as Serving cell and detects that the same frequency of described Serving cell is adjacent
The co-frequency cell detection ratio in district；
The total interference value of PCI obtains module, for obtaining according to described co-frequency cell detection ratio and PCI interference coefficient
Obtain the total interference value of PCI of described Serving cell.
The method and apparatus that the present invention obtains the total interference value of PCI based on co-frequency cell detection ratio, with existing skill
When art is compared to each other, possess advantages below:
(1) problem that the present invention solves existing assessment PCI mass excessively machinery: the present invention is done by PCI
Disturb coefficient and correlation coefficient (SSsn) be multiplied, draw each single pair of interference value, fully demonstrated when A community cannot
When avoiding, with one of them community of B, C, D, mod3 conflict occurs, 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, can be pin-pointed to actually which
PCI belongs to optimum, can comprehensive assessment PCI quality condition and the change of the quality of PCI mass before and after turning over PCI
Degree.
Accompanying drawing explanation
Fig. 1 is the stream that the present invention obtains the embodiment of the method for the total interference value of PCI based on co-frequency cell detection ratio
Journey schematic diagram；
Fig. 2 is the knot that the present invention obtains the device embodiment of the total interference value of PCI based on co-frequency cell detection ratio
Structure schematic diagram；
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
Preferred embodiment, to technical scheme, carries out clear and complete description.It should be noted that
First, second wording such as grade occurred in literary composition is only used for distinguishing same technical characteristic, not suitable to technical characteristic
Sequence and quantity etc. are limited.
As it is shown in figure 1, a kind of method obtaining the total interference value of PCI based on co-frequency cell detection ratio, 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, wherein said main service road
Coverage cell, road 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 advance
If the sub sampling point in scope, it is thus achieved that co-frequency cell Road Detection ratio, a wherein said RSRP difference
Homogeneous-frequency adjacent-domain for RSRP and the coverage cell, described main service channel of coverage cell, described main service channel
The difference of RSRP；
S140, by described co-frequency cell MR detection ratio and described co-frequency cell Road Detection ratio
Big value is defined as the co-frequency cell detection ratio that Serving cell detects the homogeneous-frequency adjacent-domain of described Serving cell；
S150, obtain the PCI of described Serving cell according to described co-frequency cell detection ratio and PCI interference coefficient
Total interference value.
In step s 110, co-frequency cell MR detection ratio (SSsnm): Serving cell (main plot) s
N time, homogeneous-frequency adjacent-domain number being detected, account for all adjacent areas number of times ratio that Serving cell s detects, wherein SS represents
Signal intensity, the s in subscript represents Serving cell, and the n in subscript represents the homogeneous-frequency adjacent-domain of Serving cell, under
M in mark represents MR data.
SSsnmCan calculate according to existing Calculation of correlation factor method in prior art, i.e. SSsnm=service little
The overall measurement number of reports of the measurement report number in district scell detection homogeneous-frequency adjacent-domain ncell 6dB/Serving cell detection.
The method signal calculated intensity level gap is relatively big, SSsnmDegree of accuracy the highest, it is impossible to proper reflection community it
Between degree of association.
For drawbacks described above, existing Calculation of correlation factor formula is modified by the present invention.So, one
In individual embodiment, step S110 may include that
S1101, the overall measurement number of reports detected according to MR data acquisition Serving cell, and the 2nd RSRP
The difference the first measurement report number in the first preset range and the second measurement report in the second preset range
Number, wherein said 2nd RSRP difference is that the RSRP of described Serving cell is adjacent with the same frequency of described Serving cell
The difference of the RSRP in district；
S1102, according to expression formula: co-frequency cell MR detection ratio=(described first measurement report number/described
Overall measurement number of reports) the * the first preset constant+(described second measurement report number/described overall measurement number of reports) *
Second preset constant, it is thus achieved that co-frequency cell MR detection ratio.
First preset range and the second preset range can determine according to actual needs, the such as first preset range
For the scope less than or equal to 3dB, the second preset range is the scope being more than 3dB less than or equal to 6dB.First
Preset constant and the second preset constant are empirical, and wherein the first preset constant can be the number in 1～1.2 intervals
Value, preferably 1.2, the second preset constant can be the numerical value in 0.8～1 interval, preferably 1.Revised
MR detection ratio by stages, co-frequency cell calculates, and considers the weight coefficient in each interval, and result is more
Accurately, the dependency between properer reflection community.
In a specific embodiment, the SS of correctionsnm(service little in=Serving cell detection homogeneous-frequency adjacent-domain 3dB
RSRP-homogeneous-frequency adjacent-domain, district RSRP is less than or equal to 3dB) measurement report number/overall measurement number of reports * 1.2+ Serving cell
In detection homogeneous-frequency adjacent-domain 6dB, outer (Serving cell RSRP-homogeneous-frequency adjacent-domain RSRP is less than waiting 6dB and greatly for 3dB
In 3dB) measurement report number/overall measurement number of reports.
In the step s 120, current LTE outdoor frequency range include D frequency and F frequency, wherein D frequency comprise D1,
Tri-frequencies of D2 and D3, F frequency comprises bis-frequencies of F1 and F2.Owing to Backend parameter is arranged,
If on real road, D1 frequency is more than-92dBm (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 letter
Number intensity is usually and arranges from big to small, if the signal intensity of a community is from first starting sample point
In N continuous sampled point below, signal intensity all makes number one, then this community is main service road
Coverage cell, road, i.e. top community.N can be arranged as required to, and such as arranging N is the 13rd sampled point,
If that a community all makes number one from the signal intensity of the 1st sampled point to the 13rd sampled point,
Ze Gai community is main service road coverage cell.Furthermore it is possible to time strong co-frequency cell is secondary in regulation 3dBm
Service road coverage cell.
When calculating continuous sampling point, the above-mentioned method determining main service road coverage cell is crossed with harshness, not
Consider actual 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, the starting sample point (i.e. the 1st sampled point) of described frequency sweep data will comprise D1 frequency
And the community of RSRP maximum is 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.
In view of the uncertainty of signal, a sampled point is likely to be due to burst and wafts, so this road cannot be determined
The most main service road coverage cell, coverage cell, road, needs comprehensive sampled point below to judge that this road covers
Whether lid community is main service road coverage cell.
S1202, in interval each sampled point of the first continuous sampling point, detect described road respectively and cover little
Whether the difference of the RSRP in district 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, and described first adopts continuously
The next sampled point that first sampled point is described starting sample point in sampling point interval；
In first continuous sampling point interval, each sampled point is continuous print, such as in the first continuous sampling point interval
Sampled point be followed successively by the 2nd sampled point, the 3rd sampled point, the 4th sampled point ..., the 10th
Sampled point, the order of sampled point determined according to the sampling time.First predetermined threshold value can be the most true
Fixed, such as it is set to 3dB.In each sampled point in the first continuous sampling point interval, difference is required to greatly
In the first predetermined threshold value.As a example by the 10th sampled point, the RSRP of road coverage cell needs more adjacent than with frequency
Strong more than the 3dB in district, just carries out follow-up judgement.
S1203, if so, in interval each sampled point of the second continuous sampling point, detect described road respectively
It is pre-conditioned whether the RSRP of coverage cell is satisfied by, and wherein said second continuous sampling point interval comprises pre-
If individual continuous print sampled point, first sampled point in described second continuous sampling point interval is described first company
The next sampled point of last sampled point in continuous sampled point interval；
Each sampled point in second continuous sampling interval is continuous print, such as in the first continuous sampling point interval
Sampled point be followed successively by the 2nd sampled point, the 3rd sampled point ..., the 10th sampled point, second
The sampled point in continuous sampling interval 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 is strong in a sampled point
Spending the alien-frequency district that the strongest community is described road coverage cell, the RSRP of described road coverage cell is big
In signal strength threshold, signal strength threshold can be arranged according to practical situation, and such as signal strength threshold can
To be set to-92dBm；Or, (condition 2) is if the community that signal intensity is the strongest in a sampled point is institute
State the alien-frequency district of road coverage cell, the RSRP of described alien-frequency district and described road coverage cell
The difference of RSRP is less than the second predetermined threshold value, and the second predetermined threshold value can be configured according to actual needs, example
As being set to 6dB；Or, (condition 3) is if the community that signal intensity is the strongest in a sampled point is described
The homogeneous-frequency adjacent-domain of road coverage cell, the RSRP of the homogeneous-frequency adjacent-domain that signal intensity is the strongest covers with described road
The difference of the RSRP of community is less than the 3rd predetermined threshold value, and the 3rd predetermined threshold value can be arranged according to actual needs,
Such as it is set to 3dB.For the 3rd condition, with an example explanation, when road coverage cell reaches
After strongly continuous 2 sampled points, become secondary strong the 3rd sampled point road cell signals coverage intensity, 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
In some sampled point, the RSRP of road coverage cell is not top, should be calculated as covering continuously yet,
Regard as the TOP sampled point occurred continuously.
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 set up according to frequency sweep data
Interference model, the deduction that it is road quality provides sound assurance.SSsnrIn SS represent signal intensity,
S in subscript represents main service road coverage cell, and the n in subscript represents the same of main service road coverage cell
Frequently adjacent area, the r in subscript represents road frequency sweep data.
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 according to the frequency sweep data of road, Yi Ji
The one RSRP 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.
5th preset range can determine according to actual needs, and the such as the 5th preset range is less than or equal to 6dB
Scope.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 A community
Homogeneous-frequency adjacent-domain 6dB in (RSRP-homogeneous-frequency adjacent-domain, A community RSRP be less than or equal to 6dB) sampled point/A community
Total sampled point].
In another embodiment, step S130 includes:
S130-1, obtain total sampled point of coverage cell, main service channel according to the frequency sweep data of road, Yi Ji
The one RSRP difference the first sub sampling point in the 3rd preset range and the second son in the 4th preset range
Sampled point；
S130-2, according to expression formula: co-frequency cell Road Detection ratio=(described first sub sampling point/described is always
Sampled point) the * the three preset constant+(described second sub sampling point/described total sampled point) * the four preset constant,
Obtain co-frequency cell Road Detection ratio.
3rd preset range and the 4th preset range can determine according to actual needs, the such as the 3rd preset range
For the scope less than or equal to 3dB, the second preset range is the scope being more than 3dB less than or equal to 6dB.3rd
Preset constant and the 4th preset constant are empirical, during wherein the 3rd preset constant can be 1～1.2 intervals
One numerical value, preferably 1.2, the 4th preset constant can be a numerical value in 0.8～1 interval, is preferably
1。SSsnrBy stages calculates, and considers the weight coefficient in each interval, and result is the most accurate, properer
Dependency between reflection road community.
In a specific embodiment, SSsnr=[A community, frequency sweep main service road coverage cell and A community
Homogeneous-frequency adjacent-domain 3dB in (RSRP-homogeneous-frequency adjacent-domain, A community RSRP be less than or equal to 3dB) sampled point/A community
Total sampled point] in * 1.2+ frequency sweep A community and homogeneous-frequency adjacent-domain 6dB, outer (the RSRP-homogeneous-frequency adjacent-domain, A community of 3dB
RSRP is less than or equal to 6dB and more than 3dB) sampled point/total sampled point in A community.
In step S140, co-frequency cell detection ratio SSsnFor based on co-frequency cell MR detection ratio
(SSsnm) and co-frequency cell Road Detection ratio (SSsnr) maximum, computing formula is as follows:
Co-frequency cell detection ratio (SSsn)=MAX ((SSsnm),(SSsnr))
In step S150, in one embodiment, described Serving cell can be obtained according to expressions below
The total interference value of PCI:
Wherein, sum (M3R, M6R, M30R)mPCI for the homogeneous-frequency adjacent-domain m of Serving cell and Serving cell
Interference coefficient；(SSsn)mFor the co-frequency cell detection ratio of the homogeneous-frequency adjacent-domain m of Serving cell and Serving cell,
SSsnS in subscript represents that Serving cell, n represent homogeneous-frequency adjacent-domain；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, 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.
It is only the concrete example of the value to M3R, M6R and M30R it should be noted that above-mentioned, this
Bright not value to them makes restriction, and 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, it is embodied as below by one
Example illustrates.
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 detection ratio of community B equal to community A, takes advantage of
Upper community A and the interference coefficient of community B.If community A and community B exist simultaneously PCI mod3 conflict,
PCI mod6 conflict and PCI mod30 conflict, then interference coefficient is 1+0.8+0.1, and other situation is similar to,
It will not go into details for this.
Community A → community C interference value detects the co-frequency cell detection ratio of community C equal to community A, takes advantage of
Upper community A and the interference coefficient of community C.If there is PCI mod3 conflict in community A and community C simultaneously
Conflict with PCI mod6, then interference coefficient is 1+0.8, and other situation is similar to, and does not repeats them here.
……
And so on, Ze Keyi community A and the interference value of all co-frequency cells, the interference value that then will obtain
Cumulative, obtain the total interference value of PCI of community A.
Based on same inventive concept, the present invention also provides for a kind of total based on co-frequency cell detection ratio acquisition PCI
The device of interference value, is described in detail the detailed description of the invention of apparatus of the present invention below in conjunction with the accompanying drawings.
As in figure 2 it is shown, a kind of device obtaining the total interference value of PCI based on co-frequency cell detection ratio, including:
Co-frequency cell MR detection ratio obtains module 110, for obtaining co-frequency cell MR according to MR data
Detection ratio；
Main service road coverage cell obtains module 120, for determining main service road according to the frequency sweep data of road
Coverage cell, road, wherein said main service road coverage cell is in the starting sample point of described frequency sweep data
The community that signal intensity is the strongest；
Co-frequency cell Road Detection ratio obtains module 130, for according to coverage cell, described main service channel
Total sampled point and RSRP difference sub sampling point in preset range, it is thus achieved that co-frequency cell road is examined
Survey ratio, a wherein said RSRP difference is the RSRP of coverage cell, described main service channel and described master
The difference of the RSRP of the homogeneous-frequency adjacent-domain of coverage cell, service channel；
Co-frequency cell detection ratio obtains module 140, for by described co-frequency cell MR detection ratio and described
Maximum in the Road Detection ratio of co-frequency cell is defined as Serving cell and the same frequency of described Serving cell detected
The co-frequency cell detection ratio of adjacent area；
The total interference value of PCI obtains module 150, for disturbing system according to described co-frequency cell detection ratio and PCI
Number obtains the total interference value of PCI of described Serving cell.
Co-frequency cell MR detection ratio obtains module 110 can be according to correlation coefficient existing in prior art
Computational methods obtain SSsnm, i.e. SSsnmMeasurement in=Serving cell scell detection homogeneous-frequency adjacent-domain ncell 6dB
The overall measurement number of reports of number of reports/Serving cell detection.But the method signal calculated intensity level gap is 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, one
In individual embodiment, 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, total survey that Serving cell detects
Amount number of reports, and the 2nd RSRP difference the first measurement report number in the first preset range and second
The second measurement report number in preset range, wherein said 2nd RSRP difference is described Serving cell
The difference of RSRP and the RSRP of the homogeneous-frequency adjacent-domain of described Serving cell；
Co-frequency cell MR detection ratio obtains unit 1102, for according to expression formula: co-frequency cell MR examines
Survey ratio=(described first measurement report number/described overall measurement number of reports) the * the first preset constant+(described second
Measurement report number/described overall measurement 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 system in each interval
Number, result is the most accurate, the dependency between properer reflection community.
According to various ways, main service road coverage cell obtains module 120 can determine that main service road covers
Community, such as, in each sampled point, signal intensity is usually and arranges from big to small, if a community
Signal intensity all come at signal intensity from first starting sample point to N continuous sampled point below
First, then this community is main service road coverage cell, i.e. top community.N can set as required
Put.
When calculating continuous sampling point, the above-mentioned method determining main service road coverage cell is crossed with harshness, not
Consider actual switching condition, can lose non-the strongest time but continuous sampling point partial dot should be belonged to.So,
In one embodiment, as shown in Figure 4, acquisition module 120 in described main service road coverage cell may include that
Road coverage cell determines unit 1201, for comprising D1 in the starting sample point of described frequency sweep data
The community of frequency and RSRP maximum is defined as road coverage cell；
Difference detector unit 1202, in each sampled point interval at the first continuous sampling point, examines respectively
The difference of the RSRP and the RSRP of the homogeneous-frequency adjacent-domain of described road coverage cell that survey described road coverage cell is
No first predetermined threshold value that is all higher than, wherein said first continuous sampling interval comprises presets a continuous print sampled point,
The next sampled point that first sampled point is described starting sample point in described first continuous sampling point interval；
RSRP detector unit 1203, for when difference is all higher than the first predetermined threshold value, adopts continuously second
In each sampled point that sampling point is interval, whether the RSRP detecting described road coverage cell respectively is satisfied by pre-
If condition, 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 last sampled point in described first continuous sampling point interval
Next sampled point；
Main service road coverage cell determines unit 1204, is used for when RSRP is satisfied by pre-conditioned, will
Described road coverage cell is defined as main service road coverage cell.
In one embodiment, described pre-conditioned include: (condition 1) is if signal is strong in a sampled point
Spending the alien-frequency district that the strongest community is described road coverage cell, the RSRP of described road coverage cell is big
In signal strength threshold, signal strength threshold can be arranged according to practical situation, and such as signal strength threshold can
To be set to-92dBm；Or, (condition 2) is if the community that signal intensity is the strongest in a sampled point is institute
State the alien-frequency district of road coverage cell, the RSRP of described alien-frequency district and described road coverage cell
The difference of RSRP is less than the second predetermined threshold value, and the second predetermined threshold value can be configured according to actual needs, example
As being set to 6dB；Or, (condition 3) is if the community that signal intensity is the strongest in a sampled point is described
The homogeneous-frequency adjacent-domain of road coverage cell, the RSRP of the homogeneous-frequency adjacent-domain that signal intensity is the strongest covers with described road
The difference of the RSRP of community is less than the 3rd predetermined threshold value, and the 3rd predetermined threshold value can be arranged according to actual needs,
Such as it is set to 3dB.
As long as the RSRP of road coverage cell meets any one condition in three above condition, even if
In some sampled point, the RSRP of road coverage cell is not top, should be calculated as covering continuously yet,
Regard as the TOP sampled point occurred continuously.
Co-frequency cell Road Detection ratio obtains module 130 can obtain SS according to various wayssnr, such as,
In one embodiment, as it is shown in figure 5, described co-frequency cell Road Detection ratio acquisition module 130 is permissible
Including:
Second sampled point obtains unit 1301, obtains main service channel for the frequency sweep data according to road and covers
Total sampled point of community, 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
The ratio of described total sampled point, it is thus achieved that co-frequency cell Road Detection ratio.The method not by stages calculates,
The degree of accuracy that the method obtains is relatively low.
In another embodiment, as shown in Figure 6, described co-frequency cell Road Detection ratio obtains module 130
May include that
First sampled point obtains unit 130-1, obtains main service channel for the frequency sweep data according to road and covers
Total sampled point of community, and the RSRP difference the first sub sampling point in the 3rd preset range and
The second sub sampling point in 4th preset range；
First co-frequency cell Road Detection ratio obtains unit 130-2, for according to expression formula: road, co-frequency cell
Road detection ratio=(described first sub sampling point/described total sampled point) * the three preset constant+(described second son
Sampled point/described total sampled 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,
Dependency between properer 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 (SSsnr) maximum, co-frequency cell detection ratio obtain module 140 according to following meter
Calculate formula and obtain co-frequency cell detection ratio SSsn:
Co-frequency cell detection ratio (SSsn)=MAX ((SSsnm),(SSsnr))
In one embodiment, described PCI total interference value acquisition module 150 can obtain according to expressions below
The total interference value of PCI of described Serving cell:
Wherein, sum (M3R, M6R, M30R)mPCI for the homogeneous-frequency adjacent-domain m of Serving cell and Serving cell
Interference coefficient, 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, (SSsn)mSame frequency for the homogeneous-frequency adjacent-domain m of Serving cell and Serving cell is little
District's detection ratio, SSsnS in subscript represents that Serving cell, n represent homogeneous-frequency adjacent-domain.
The method and apparatus that the present invention obtains the total interference value of PCI based on co-frequency cell detection ratio, with existing skill
When art is compared to each other, possess advantages below:
(1) problem that the present invention solves existing assessment PCI mass excessively machinery: the present invention is done by PCI
Disturb coefficient and correlation coefficient (SSsn) be multiplied, draw each single pair of interference value, fully demonstrated when A community cannot
When avoiding, with one of them community of B, C, D, mod3 conflict occurs, 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, can be pin-pointed to actually which
PCI belongs to optimum, can comprehensive assessment PCI quality condition and the change of the quality of PCI mass before and after turning over PCI
Degree.
Each technical characteristic of embodiment described above can combine arbitrarily, for making description succinct, the most right
The all possible combination of each technical characteristic in above-described embodiment is all described, but, if these skills
There is not contradiction in the combination of art feature, is all 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 can not therefore be construed as limiting the scope of the patent.It should be pointed out that, for this area
For those of ordinary skill, without departing from the inventive concept of the premise, it is also possible to make some deformation and change
Entering, these broadly fall into protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be with appended power
Profit requires to be as the criterion.
Claims (10)
1. the method obtaining the total interference value of PCI based on co-frequency cell detection ratio, it is characterised in that bag
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 covers
Community is 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 a RSRP difference are in preset range
Interior sub sampling point, it is thus achieved that co-frequency cell Road Detection ratio, a wherein said RSRP difference is described
The RSRP of the homogeneous-frequency adjacent-domain of the RSRP of coverage cell, main service channel and coverage cell, described main service channel
Difference；
By true for the maximum in described co-frequency cell MR detection ratio and described co-frequency cell Road Detection ratio
It is set to the co-frequency cell detection ratio that Serving cell detects the homogeneous-frequency adjacent-domain of described Serving cell；
The PCI obtaining described Serving cell according to described co-frequency cell detection ratio and PCI interference coefficient always does
Disturb value.
The method obtaining the total interference value of PCI based on co-frequency cell detection ratio the most according to claim 1,
It is characterized in that, the step obtaining co-frequency cell MR detection ratio according to MR data includes:
The overall measurement number of reports that Serving cell detects, and the 2nd RSRP difference is obtained according to MR data
The first measurement report number in the first preset range and the second measurement report number in the second preset range,
Wherein said 2nd RSRP difference is the RSRP homogeneous-frequency adjacent-domain with described Serving cell of described Serving cell
The difference of RSRP；
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 often preset
Number, it is thus achieved that co-frequency cell MR detection ratio.
The method obtaining the total interference value of PCI based on co-frequency cell detection ratio the most according to claim 1,
It is characterized in that, 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
Coverage cell, road；
In each sampled point that the first continuous sampling point is interval, detect described road coverage cell respectively
Whether RSRP is all higher than the first predetermined threshold value with the difference of the RSRP of the homogeneous-frequency adjacent-domain of described road coverage cell,
Wherein said first continuous sampling interval comprises presets a continuous print sampled point, described first continuous sampling point district
The next sampled point that first sampled point is described starting sample point between；
If so, in each sampled point in the second continuous sampling point interval, 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 individual company
Continuous sampled point, first sampled point in described second continuous sampling point interval is described first continuous sampling
The next sampled point of last sampled point in some interval；Described pre-conditioned include: if a sampling
The community that in point, signal intensity is the strongest is the alien-frequency district of described road coverage cell, described road coverage cell
RSRP more than signal strength threshold；Or, if the community that signal intensity is the strongest in a sampled point is
The alien-frequency district of described road coverage cell, the RSRP of described alien-frequency district and described road coverage cell
The difference of RSRP is less than the second predetermined threshold value；Or, if the community that signal intensity is the strongest in a sampled point
For the homogeneous-frequency adjacent-domain of described road coverage cell, the RSRP of the homogeneous-frequency adjacent-domain that signal intensity is the strongest and described road
The difference of the RSRP of coverage cell, road 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 detection ratio the most according to claim 1,
It is characterized in that,
Total sampled point according to coverage cell, described main service channel and a RSRP difference are in preset range
Interior sub sampling 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
The difference the first sub sampling point in the 3rd 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 preset constant+(described second sub sampling point/described total sampled point) * the four preset constant, it is thus achieved that with frequency
Community Road Detection ratio；
Or,
Total sampled point according to coverage cell, described main service channel and a RSRP difference are in preset range
Interior sub sampling 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
The difference the 3rd sub sampling point in the 5th 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
Example.
5. according to described in Claims 1-4 any one based on co-frequency cell detection ratio obtain PCI total
The method of interference value, it is characterised in that the PCI obtaining described Serving cell according to expressions below always disturbs
Value:
Wherein, sum (M3R, M6R, M30R)mPCI for the homogeneous-frequency adjacent-domain m of Serving cell and Serving cell
Interference coefficient, 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, (SSsn)mSame frequency for the homogeneous-frequency adjacent-domain m of Serving cell and Serving cell is little
District's detection ratio.
6. the device obtaining the total interference value of PCI based on co-frequency cell detection ratio, it is characterised in that bag
Include:
Co-frequency cell MR detection ratio obtains module, for obtaining co-frequency cell MR inspection according to MR data
Survey ratio；
Main service road coverage cell obtains module, for determining main service road according to the frequency sweep data of road
Coverage cell, wherein said main service road coverage cell is to believe in the starting sample point of described frequency sweep data
Number community that intensity is the strongest；
Co-frequency cell Road Detection ratio obtains module, total for according to coverage cell, described main service channel
Sampled point and the 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 of covering adjacent area, described main service channel and described main clothes
The difference of the RSRP of the homogeneous-frequency adjacent-domain of business passage coverage cell；
Co-frequency cell detection ratio obtains module, for by described co-frequency cell MR detection ratio and described with
Frequently the maximum in community Road Detection ratio is defined as Serving cell and detects that the same frequency of described Serving cell is adjacent
The co-frequency cell detection ratio in district；
The total interference value of PCI obtains module, for obtaining according to described co-frequency cell detection ratio and PCI interference coefficient
Obtain the total interference value of PCI of described Serving cell.
The device obtaining the total interference value of PCI based on co-frequency cell detection ratio the most according to claim 6,
It is characterized in that, 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 report that Serving cell detects
Accuse number, and the 2nd RSRP difference the first measurement report number in the first preset range and presetting second
In the range of the second measurement report number, wherein said 2nd RSRP difference is the RSRP of described Serving cell
Difference with the RSRP of the homogeneous-frequency adjacent-domain of described Serving cell；
Co-frequency cell MR detection ratio obtains unit, for according to expression formula: co-frequency cell MR detects ratio
Example=(described first measurement report number/described overall measurement number of reports) * the first preset constant+(described second measures
Number of reports/described overall measurement number of reports) 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 detection ratio the most according to claim 6,
It is characterized in that, described main service road coverage cell obtains module and includes:
Road coverage cell determines unit, for comprising D1 frequency in the starting sample point of described frequency sweep data
And the community of RSRP maximum is defined as road coverage cell；
Difference detector unit, in each sampled point interval at the first continuous sampling point, detects institute respectively
The RSRP stating road coverage cell is the most equal with the difference of the RSRP of the homogeneous-frequency adjacent-domain of described road coverage cell
More than the first predetermined threshold value, wherein said first continuous sampling interval comprises presets a continuous print sampled point, institute
State the next sampled point that first sampled point is described starting sample point in the first continuous sampling point interval；
RSRP detector unit, for when difference is all higher than the first predetermined threshold value, in the second continuous sampling point district
Between 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, described second continuous sampling point
First sampled point in 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
The alien-frequency district of coverage cell, road, the RSRP of described road coverage cell is more than signal strength threshold；Or,
If the alien-frequency district that the community that signal intensity is the strongest in a sampled point is described road coverage cell, described
The difference of the RSRP of alien-frequency district and the RSRP of described road coverage cell is less than the second predetermined threshold value；Or,
If the homogeneous-frequency adjacent-domain that the community that signal intensity is the strongest in a sampled point is described road coverage cell, signal
The difference of the RSRP of the homogeneous-frequency adjacent-domain that intensity the is the strongest and RSRP of described road coverage cell is preset less than the 3rd
Threshold value；
Main service road coverage cell determines unit, for when RSRP is satisfied by pre-conditioned, by described
Road coverage cell is defined as main service road coverage cell.
Device based on detection ratio community, the co-frequency cell total interference value of PCI the most according to claim 6,
It is characterized in that,
Described co-frequency cell Road Detection ratio obtains module and includes:
First sampled point obtains unit, 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 the 4th
The second sub sampling point in preset range；
First co-frequency cell Road Detection ratio obtains unit, for according to expression formula: co-frequency cell road is examined
Survey ratio=(described first sub sampling point/described total sampled point) the * the three preset constant+(described second sub sampling
Point/described total sampled point) the * 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 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, is used for according to described 3rd sub sampling point with described
The ratio of total sampled point, it is thus achieved that co-frequency cell Road Detection ratio.
10. according to described in claim 6 to 9 any one based on detection ratio community, co-frequency cell PCI
The device of total interference value, it is characterised in that the total interference value of described PCI obtains module and obtains according to expressions below
The total interference value of PCI of described Serving cell:
Wherein, sum (M3R, M6R, M30R)mPCI for the homogeneous-frequency adjacent-domain m of Serving cell and Serving cell
Interference coefficient, 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, (SSsn)mSame frequency for the homogeneous-frequency adjacent-domain m of Serving cell and Serving cell is little
District's detection ratio.
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