CN106817186B - A kind of method and device of Physical Cell Identifier PCI interference self-optimizing - Google Patents
A kind of method and device of Physical Cell Identifier PCI interference self-optimizing Download PDFInfo
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- CN106817186B CN106817186B CN201510862630.4A CN201510862630A CN106817186B CN 106817186 B CN106817186 B CN 106817186B CN 201510862630 A CN201510862630 A CN 201510862630A CN 106817186 B CN106817186 B CN 106817186B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
- H04J11/0023—Interference mitigation or co-ordination
- H04J11/005—Interference mitigation or co-ordination of intercell interference
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
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- H04W72/27—Control channels or signalling for resource management between access points
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
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- H04W72/52—Allocation or scheduling criteria for wireless resources based on load
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Abstract
The present invention provides a kind of method and device of Physical Cell Identifier PCI interference self-optimizing, this method comprises: obtaining the degree of correlation between the first PCI and the 2nd PCI；First PCI is PCI corresponding with Target cell, and the 2nd PCI is PCI corresponding with the homogeneous-frequency adjacent-domain of Target cell；Measurement report, backstage switching index and frequency sweep data based on Target cell and homogeneous-frequency adjacent-domain, and the PCI integrated interference coefficient of Target cell is determined according to the degree of correlation；If the PCI integrated interference coefficient of Target cell is greater than a threshold value, determine that Target cell is PCI high interference cell；It is Target cell selection target PCI according to preset rules, and PCI corresponding with Target cell is revised as target PCI.The embodiment of the present invention effectively solves the limitation of tradition PCI optimization, improves PCI optimization accuracy, so that PCI modification flexibly can timely cope with network change.
Description
Technical field
The present invention relates to wireless communication technology field, in particular to a kind of side of Physical Cell Identifier PCI interference self-optimizing
Method and device.
Background technique
LTE identical networking, the interior interference of system is mainly from minizone, and wherein PCI interference is the most serious.LTE system has altogether
Including 504 PCI (Physical Cell Identifier, Physical Cell Identifier).These PCI points are 168 groups, every group of packet
Include 3 PCI.PCI determines that cell signal is synchronous and whether random access succeeds.(3G (Third Generation) Moblie connects by each E-UTRAN
Network portion) cell corresponds to only one PCI.When the E-UTRAN cell data in LTE network is more, inevitably
There is PCI multiplexing, i.e., multiple E-UTRAN cells use the same PCI.Since PCI planning is unreasonable, manually adjusts PCI, adjacent area
Parameter such as is modified at the reasons, may cause PCI conflict MOD3, MOD6, the MOD30 and M0 and M1 interference of the minizone E-UTRAN.
The case where PCI self-optimizing at present only combines PCI conflict, obscures, MOD3, MOD6, MOD30, comments PCI
Estimate.PCI optimization relies primarily on technical staff and optimizes adjustment by analyzing DT (big data) data, and generally only considered
Cell MOD3 disturbed condition.
Currently, PCI self-optimizing only combines PCI conflict, obscures, mod3, mod6, mod3 situation is assessed, but LTE system
In exist simultaneously m0, the PCI such as m1 interference cannot utmostly reduce the PCI interference of minizone.PCI optimization more relies on skill
Art personnel analyze DT data, rule of thumb carry out live manual debugging, expend a large amount of human and material resources；And artificial optimization is based on DT
Data, PCI modification fully rely on engineer experience, often will appear the case where attending to one thing and lose sight of another, and cannot cope with network change in time
Change.
Summary of the invention
The purpose of the present invention is to provide a kind of method and devices of Physical Cell Identifier PCI interference self-optimizing, solve
The considerations of prior art PCI optimizes factor is not comprehensive and PCI modification fully relies on engineer experience and cannot cope with network in time
The problem of variation.
In order to achieve the above object, the embodiment of the present invention provides a kind of method of Physical Cell Identifier PCI interference self-optimizing,
Include:
Obtain the degree of correlation between the first PCI and the 2nd PCI；First PCI is PCI corresponding with Target cell, institute
Stating the 2nd PCI is PCI corresponding with the homogeneous-frequency adjacent-domain of Target cell；
Measurement report, backstage switching index and frequency sweep data based on the Target cell and the homogeneous-frequency adjacent-domain, and
The PCI integrated interference coefficient of the Target cell is determined according to the degree of correlation；
If the PCI integrated interference coefficient of the Target cell is greater than a threshold value, determine that the Target cell is PCI high level cadre
Disturb cell；
It is the Target cell selection target PCI according to preset rules, and will PCI modification corresponding with the Target cell
For the target PCI.
Wherein, the step of degree of correlation obtained between the first PCI and the 2nd PCI includes:
Interference is obscured according to the conflict between the first PCI and the 2nd PCI, mould 3 interferes, the interference of mould 6, mould 30 interferes, m0 is done
It disturbs and m1 is interfered, determine the degree of correlation between the first PCI and the 2nd PCI.
Wherein, the formula of the degree of correlation between determination the first PCI and the 2nd PCI are as follows:
Rpci=Km*Rm+Km3*Rm3+Km6*Rm6+Km30*Rm30+Km0*Rm0+Km1*Rm1；
Wherein, the RpciFor the degree of correlation between the first PCI and the 2nd PCI, the Km、Km3、Km6、Km30、Km0And Km1
For the interference weighted factor between the first PCI and the 2nd PCI, the RmIt is mixed for the conflict of the first PCI and the 2nd PCI
Confuse interference correlation, the Rm3For 3 interference correlation of mould of the first PCI and the 2nd PCI, the Rm6For the first PCI
With 6 interference correlation of mould of the 2nd PCI, the Rm30For 30 interference correlation of mould of the first PCI and the 2nd PCI, the Rm0
For the m0 interference correlation of the first PCI and the 2nd PCI, the Rm1Correlation is interfered for the m1 of the first PCI and the 2nd PCI
Degree.
Wherein, the measurement report based on the Target cell and the homogeneous-frequency adjacent-domain, backstage switch index and sweep
Frequency evidence, and the step of determining according to the degree of correlation PCI integrated interference coefficient of the Target cell includes:
Measurement report based on the Target cell and the homogeneous-frequency adjacent-domain, and the target is determined according to the degree of correlation
First PCI interference coefficient of cell；
Switch index based on the backstage of the Target cell and the homogeneous-frequency adjacent-domain, and according to degree of correlation determination
2nd PCI interference coefficient of Target cell；
Frequency sweep data based on the Target cell and the homogeneous-frequency adjacent-domain, and the target is determined according to the degree of correlation
3rd PCI interference coefficient of cell；
According to first interference coefficient, the second interference coefficient and third interference coefficient, the Target cell is determined
PCI integrated interference coefficient.
Wherein, the measurement report based on the Target cell and the homogeneous-frequency adjacent-domain, and it is true according to the degree of correlation
The step of the first PCI interference coefficient of the Target cell includes: calmly
According to the measurement report of the measurement report of Target cell and homogeneous-frequency adjacent-domain, the sampling number of Target cell and same is determined
The sampling number of frequency adjacent area；
According to the sampling number of the sampling number of the Target cell and homogeneous-frequency adjacent-domain, Target cell and homogeneous-frequency adjacent-domain are determined
The degree of correlation based on the measurement report；
According to the degree of correlation based on the measurement report of Target cell and co-frequency cell, Target cell is determined and with frequency neighbour
The level interference coefficient based on measurement report in area；
According to the degree of correlation between the level interference coefficient and the first PCI and the 2nd PCI, determine Target cell and
The interference coefficient based on measurement report of homogeneous-frequency adjacent-domain；
According to the same frequency of Target cell and the interference coefficient and the Target cell based on measurement report of homogeneous-frequency adjacent-domain
The number of adjacent area determines the first PCI interference coefficient of Target cell.
Wherein, index is switched based on the backstage of the Target cell and the homogeneous-frequency adjacent-domain, and true according to the degree of correlation
The step of the 2nd PCI interference coefficient of the Target cell includes: calmly
The switching index for switching index and homogeneous-frequency adjacent-domain according to the backstage of Target cell, determines the switching times of Target cell
With the switching times of homogeneous-frequency adjacent-domain；
According to the switching times of the switching times of Target cell and homogeneous-frequency adjacent-domain, the base of Target cell and homogeneous-frequency adjacent-domain is determined
Switch the degree of correlation of index in backstage；
According to the degree of correlation and the first PCI and the 2nd PCI for switching index based on backstage of Target cell and homogeneous-frequency adjacent-domain
Between the degree of correlation, determine the interference coefficient for switching index based on backstage of Target cell and homogeneous-frequency adjacent-domain；
According to the same frequency of Target cell and the interference coefficient and Target cell based on backstage switching index of homogeneous-frequency adjacent-domain
The number of adjacent area determines the 2nd PCI interference coefficient of Target cell.
Wherein, the frequency sweep data based on the Target cell and the homogeneous-frequency adjacent-domain, and it is true according to the degree of correlation
The step of the 3rd PCI interference coefficient of the Target cell includes: calmly
According to the frequency sweep data of the frequency sweep data of Target cell and homogeneous-frequency adjacent-domain, the sampling number of Target cell and same is determined
The sampling number of frequency adjacent area；
According to the sampling number of the sampling number of the Target cell and homogeneous-frequency adjacent-domain, Target cell and homogeneous-frequency adjacent-domain are determined
The degree of correlation based on frequency sweep data；
According to the degree of correlation based on the frequency sweep data of Target cell and co-frequency cell, Target cell is determined and with frequency neighbour
The level interference coefficient based on frequency sweep data in area；
According to the degree of correlation between the level interference coefficient and the first PCI and the 2nd PCI, determine Target cell and
The interference coefficient based on frequency sweep data of homogeneous-frequency adjacent-domain；
According to the same frequency of Target cell and the interference coefficient and the Target cell based on frequency sweep data of homogeneous-frequency adjacent-domain
The number of adjacent area determines the 3rd PCI interference coefficient of Target cell.
Wherein, described according to first interference coefficient, the second interference coefficient and third interference coefficient, determine the mesh
Mark cell PCI integrated interference coefficient the step of include:
According to first interference coefficient, measurement report interference weighted factor, the second interference coefficient, switching interference weighting because
Son, third interference coefficient and Sweeping nonlinearity weighted factor, determine the PCI integrated interference coefficient of Target cell.
Wherein, described to include: for the step of Target cell selection target PCI according to preset rules
According to the PCI integrated interference coefficient of other cells in station, the target of the selection Target cell in slave station is carried out
PCI；
If not meeting the target PCI of condition in standing, constraint condition selection target in planned range is optimized based on PCI
PCI；Wherein, PCI optimize constraint condition include: with station cell PCI do not repeat, the PCI of any cell and homogeneous-frequency adjacent-domain is not weighed
Repeatedly and in preset range PCI is not repeated the PCI of multiple, the two neighboring same frequency of cell adjacent area.
Wherein, before the degree of correlation obtained between the first PCI and the 2nd PCI further include:
Determination is not traffic affecting alarm cell and was not coverage cell and was not to cover abnormal cell as target
Cell.
The embodiment of the present invention also provides a kind of device of Physical Cell Identifier PCI interference self-optimizing, comprising:
Module is obtained, for obtaining the degree of correlation between the first PCI and the 2nd PCI；First PCI is and Target cell
Corresponding PCI, the 2nd PCI are PCI corresponding with the homogeneous-frequency adjacent-domain of Target cell；
Coefficient determination module refers to for the measurement report based on the Target cell and the homogeneous-frequency adjacent-domain, backstage switching
It is marked with and frequency sweep data, and determines the PCI integrated interference coefficient of the Target cell according to the degree of correlation；
Interfere determining module, if for the Target cell PCI integrated interference coefficient be greater than a threshold value, determine described in
Target cell is PCI high interference cell；
Modified module is selected, for being the Target cell selection target PCI according to preset rules, and will be with the target
The corresponding PCI of cell is revised as the target PCI.
Wherein, the acquisition module includes:
Acquisition submodule, for obscuring interference according to the conflict between the first PCI and the 2nd PCI, mould 3 interferes, mould 6 is dry
Disturb, mould 30 interference, m0 interference and m1 interference, determine the degree of correlation between the first PCI and the 2nd PCI.
Wherein, the formula of the degree of correlation between the first PCI and the 2nd PCI is determined in the acquisition submodule are as follows:
Rpci=Km*Rm+Km3*Rm3+Km6*Rm6+Km30*Rm30+Km0*Rm0+Km1*Rm1
Wherein, the RpciFor the degree of correlation between the first PCI and the 2nd PCI, the Km、Km3、Km6、Km30、Km0And Km1
For the interference weighted factor between the first PCI and the 2nd PCI, the RmIt is mixed for the conflict of the first PCI and the 2nd PCI
Confuse interference correlation, the Rm3For 3 interference correlation of mould of the first PCI and the 2nd PCI, the Rm6For the first PCI
With 6 interference correlation of mould of the 2nd PCI, the Rm30For 30 interference correlation of mould of the first PCI and the 2nd PCI, the Rm0
For the m0 interference correlation of the first PCI and the 2nd PCI, the Rm1Correlation is interfered for the m1 of the first PCI and the 2nd PCI
Degree.
Wherein, the coefficient determination module includes:
First coefficient determines submodule, for the measurement report based on the Target cell and the homogeneous-frequency adjacent-domain, and root
The first PCI interference coefficient of the Target cell is determined according to the degree of correlation；
Second coefficient determines submodule, for switching index based on the backstage of the Target cell and the homogeneous-frequency adjacent-domain,
And the 2nd PCI interference coefficient of the Target cell is determined according to the degree of correlation；
Third coefficient determines submodule, for the frequency sweep data based on the Target cell and the homogeneous-frequency adjacent-domain, and root
The 3rd PCI interference coefficient of the Target cell is determined according to the degree of correlation；
4th coefficient determines submodule, for being interfered according to first interference coefficient, the second interference coefficient and third
Coefficient determines the PCI integrated interference coefficient of the Target cell.
Wherein, first coefficient determines that submodule includes:
First sampling unit, for determining target according to the measurement report of Target cell and the measurement report of homogeneous-frequency adjacent-domain
The sampling number of cell and the sampling number of homogeneous-frequency adjacent-domain；
First correlation unit, for determining according to the sampling number of the Target cell and the sampling number of homogeneous-frequency adjacent-domain
The degree of correlation based on the measurement report of Target cell and homogeneous-frequency adjacent-domain；
First level interfere unit, for according to Target cell to co-frequency cell based on the related of the measurement report
Degree, determines the level interference coefficient based on measurement report of Target cell and homogeneous-frequency adjacent-domain；
First interference coefficient unit, for according between the level interference coefficient and the first PCI and the 2nd PCI
The degree of correlation determines the interference coefficient based on measurement report of Target cell and homogeneous-frequency adjacent-domain；
First factor determination unit, for according to Target cell and homogeneous-frequency adjacent-domain based on the interference coefficient of measurement report with
And the number of the homogeneous-frequency adjacent-domain of the Target cell, determine the first PCI interference coefficient of Target cell.
Wherein, second coefficient determines that submodule includes:
Switch unit determines target for switching the switching index of index and homogeneous-frequency adjacent-domain according to the backstage of Target cell
The switching times of cell and the switching times of homogeneous-frequency adjacent-domain；
Second correlation unit, for determining target according to the switching times of Target cell and the switching times of homogeneous-frequency adjacent-domain
The degree of correlation for switching index based on backstage of cell and homogeneous-frequency adjacent-domain；
Second interference coefficient unit, for the degree of correlation for switching index based on backstage according to Target cell and homogeneous-frequency adjacent-domain
And the first degree of correlation between PCI and the 2nd PCI, determine Target cell and homogeneous-frequency adjacent-domain based on the dry of backstage switching index
Disturb coefficient；
Second factor determination unit, for the interference system for switching index based on backstage according to Target cell and homogeneous-frequency adjacent-domain
The number of several and Target cell homogeneous-frequency adjacent-domain, determines the 2nd PCI interference coefficient of Target cell.
Wherein, the third coefficient determines that submodule includes:
Second sampling unit, for determining target according to the frequency sweep data of Target cell and the frequency sweep data of homogeneous-frequency adjacent-domain
The sampling number of cell and the sampling number of homogeneous-frequency adjacent-domain；
Third correlation unit, for determining according to the sampling number of the Target cell and the sampling number of homogeneous-frequency adjacent-domain
The degree of correlation based on frequency sweep data of Target cell and homogeneous-frequency adjacent-domain；
Second electrical level interfere unit, for according to Target cell to co-frequency cell based on the related of the frequency sweep data
Degree, determines the level interference coefficient based on frequency sweep data of Target cell and homogeneous-frequency adjacent-domain；
Third interference coefficient unit, for according between the level interference coefficient and the first PCI and the 2nd PCI
The degree of correlation determines the interference coefficient based on frequency sweep data of Target cell and homogeneous-frequency adjacent-domain；
Third factor determination unit, for according to the interference coefficient based on frequency sweep data of Target cell and homogeneous-frequency adjacent-domain with
And the number of the homogeneous-frequency adjacent-domain of the Target cell, determine the 3rd PCI interference coefficient of Target cell.
Wherein, the 4th coefficient determines that submodule includes:
4th factor determination unit, for according to first interference coefficient, measurement report interference weighted factor, second dry
Coefficient, switching interference weighted factor, third interference coefficient and Sweeping nonlinearity weighted factor are disturbed, determines that the PCI of Target cell is comprehensive
Close interference coefficient.
Wherein, the selection modified module includes:
First choice modifies submodule, for the PCI integrated interference coefficient according to other cells in station, carries out in slave station
Select the target PCI of the Target cell；
Second selection modification submodule, if the target PCI for not meeting condition in standing, based on PCI optimization constraint item
Part selection target PCI in planned range；Wherein, PCI optimize constraint condition include: with station cell PCI do not repeat, Ren He little
The PCI of area and homogeneous-frequency adjacent-domain is not repeated, the PCI of the adjacent area of the two neighboring same frequency of cell not repeat and preset range in PCI not
It repeats.
Wherein, described device further include:
Target determination module is not traffic affecting alarm cell for determination and was not coverage cell and did not covered
Lid abnormal cell is Target cell.
Above-mentioned technical proposal of the invention at least has the following beneficial effects:
The embodiment of the present invention Physical Cell Identifier PCI interference self-optimizing method and device in, in conjunction with measurement report MR,
Frequency sweep data and backstage switch index the PCI integrated interference coefficient of Target cell is calculated, further according to PCI integrated interference
Coefficient identify PCI high interference cell, the embodiment of the present invention according to different PCI interference types to the influence degree of cell, to cell
PCI interference is weighted assessment, the PCI interference of minizone is utmostly reduced, so that PCI optimization is more accurate；Synthesis is examined again
Considering all PCI cause of failures, calculates the target PCI of each Target cell, target PCI is the optimal PCI of the Target cell,
It improves PCI and optimizes accuracy, flexibly timely cope with network change.
Detailed description of the invention
Fig. 1 shows the basic step streams of the method for Physical Cell Identifier PCI provided in an embodiment of the present invention interference self-optimizing
Cheng Tu；
Fig. 2 indicates that the composed structure of the device of Physical Cell Identifier PCI interference self-optimizing provided in an embodiment of the present invention is shown
It is intended to.
Specific embodiment
To keep the technical problem to be solved in the present invention, technical solution and advantage clearer, below in conjunction with attached drawing and tool
Body embodiment is described in detail.
The present invention provides a kind of Physical Cell Identifier PCI interference aiming at the problem that limitation that PCI in the prior art optimizes
Target cell is calculated in conjunction with measurement report MR, frequency sweep data and backstage switching index in the method and device of self-optimizing
PCI integrated interference coefficient, further according to PCI integrated interference coefficient identify PCI high interference cell, the embodiment of the present invention is according to difference
PCI interference type is weighted assessment to cell PCI interference, utmostly reduces the PCI of minizone to the influence degree of cell
Interference, so that PCI optimization is more accurate；All PCI cause of failures are comprehensively considered again, calculate the target of each Target cell
PCI, target PCI are the optimal PCI of the Target cell, improve PCI and optimize accuracy, flexibly timely cope with network change.
As shown in Figure 1, the embodiment of the present invention provides a kind of method of Physical Cell Identifier PCI interference self-optimizing, comprising:
Step 11, the degree of correlation between the first PCI and the 2nd PCI is obtained；First PCI is corresponding with Target cell
PCI, the 2nd PCI are PCI corresponding with the homogeneous-frequency adjacent-domain of Target cell；
Step 12, measurement report, backstage switching index and frequency sweep based on the Target cell and the homogeneous-frequency adjacent-domain
Data, and determine according to the degree of correlation PCI integrated interference coefficient of the Target cell；
Step 13, if the PCI integrated interference coefficient of the Target cell is greater than a threshold value, determine that the Target cell is
PCI high interference cell；
It step 14, is the Target cell selection target PCI according to preset rules, and will be corresponding with the Target cell
PCI is revised as the target PCI.
The PCI degree of correlation is precalculated out by the above embodiment of the present invention, is established PCI correlation matrix table, is stored in
In database, that is, the degree of correlation between any two in all PCI is precomputed, then step 11 can directly obtain from database
The degree of correlation between one PCI and the 2nd PCI.Then composite measurement report MR, backstage switching index and frequency sweep data calculate
To the PCI integrated interference coefficient of Target cell, it just can determine that whether Target cell is PCI high level cadre according to PCI integrated interference coefficient
Disturb cell；And the lesser new PCI of PCI integrated interference, i.e., optimal PCI are selected for PCI high interference cell.
The embodiment of the present invention is based on measurement report MR, backstage switching index and frequency sweep data, according to different PCI interference types
To the influence degree of cell, assessment is weighted to cell PCI interference, so that PCI interference is more acurrate.I.e. the embodiment of the present invention has
Effect ground solves tradition PCI and optimizes limitation, and improves PCI optimization accuracy, flexibly timely copes with network change.
Specifically, the step 11 of the above embodiment of the present invention includes:
Step 111, interference is obscured according to the conflict between the first PCI and the 2nd PCI, mould 3 interferes, mould 6 interferes, mould 30 is dry
Disturb, m0 interference and m1 interference, determine the degree of correlation between the first PCI and the 2nd PCI.
And the formula of the degree of correlation between determination the first PCI and the 2nd PCI are as follows:
Rpci=Km*Rm+Km3*Rm3+Km6*Rm6+Km30*Rm30+Km0*Rm0+Km1*Rm1；
Wherein, the RpciFor the degree of correlation between the first PCI and the 2nd PCI, the Km、Km3、Km6、Km30、Km0And Km1
For the interference weighted factor between the first PCI and the 2nd PCI, the RmIt is mixed for the conflict of the first PCI and the 2nd PCI
Confuse interference correlation, the Rm3For 3 interference correlation of mould of the first PCI and the 2nd PCI, the Rm6For the first PCI
With 6 interference correlation of mould of the 2nd PCI, the Rm30For 30 interference correlation of mould of the first PCI and the 2nd PCI, the Rm0
For the m0 interference correlation of the first PCI and the 2nd PCI, the Rm1Correlation is interfered for the m1 of the first PCI and the 2nd PCI
Degree.
Interference, the interference of mould 3, the interference of mould 6, mould 30 are obscured in degree of correlation combination PCI conflict between the PCI of the embodiment of the present invention
Interference, m0 interference and m1 interference reduce the PCI interference of minizone to the full extent.Specifically, the degree of correlation R of two PCIpci
Are as follows:
Rpci=Km*Rm+Km3*Rm3+Km6*Rm6+Km30*Rm30+Km0*Rm0+Km1*Rm1；
Wherein, PCI interferes weighted factor: Km=1, Km3=0.5, Km6=0.25, Km30=0.25, Km0=0.25, Km1=
0.25。
It should be noted that weighted factor support is artificial customized.
And when two PCI are equal, Rm=1, otherwise Rm=0；
When two PCI moulds 3 are equal, Rm3=1, otherwise Rm3=0；
When two PCI moulds 6 are equal, Rm6=1, otherwise Rm6=0；
When two PCI moulds 30 are equal, Rm30=1, otherwise Rm30=0；
When two PCI m0 are equal, Rm0=1, otherwise Rm0=0；
When two PCI m1 are equal, Rm1=1, otherwise Rm1=0.
And PCI correlation matrix table is as shown in table 1:
| Field serial number | Field name 1 | Field name 2 | Correlation | Remarks |
| 1 | PCI 1 | PCI 1 | ||
| 2 | PCI 1 | PCI 2 | ||
| 3 | PCI 1 | … |
1 PCI correlation matrix table of table
It needs further exist for illustrating, not all cell can be as assessment in the above embodiment of the present invention
The Target cell of PCI interference, the embodiment of the present invention also provide the method for determining Target cell；Specifically:
Determination is not traffic affecting alarm cell and was not coverage cell and was not to cover abnormal cell as target
Cell.
Specifically, cell alarm assessment, there are traffic affectings to alert cell, not as assessment cell.Based on MR data,
Carry out MPS process assessment；The MR data for obtaining cell identified covering, covering abnormal cell.It crosses coverage cell and covers different
Chang little Qu is not as assessment cell.
Wherein, cross coverage cell definition: serving cell and 3 neighbours other than itself average 1.5 times of station spacing (adjustable) are small
Area's related coefficient > 1%, and serving cell average level RSRP_s >=- 105dBm；Related coefficient definition: meet the MR's of condition
Neighbor cell measurement report/main plot MR general report number, serving cell MR report total be denominator, meet RSRP_s-RSRP_n≤
6dBm, then molecule adds 1；
Wherein, covering abnormal cell definition: serving cell azimuth-antenna reaches the measurement report of the MR within the scope of angle ± 60 degree
Accuse number/MR general report number > 3%, and serving cell RSRP > -105dBm, then it is assumed that the MPS process is abnormal.
Specifically, step 12 includes: in the above embodiment of the present invention
Step 121, the measurement report based on the Target cell and the homogeneous-frequency adjacent-domain, and determined according to the degree of correlation
First PCI interference coefficient of the Target cell；
Step 122, index is switched based on the backstage of the Target cell and the homogeneous-frequency adjacent-domain, and according to the degree of correlation
Determine the 2nd PCI interference coefficient of the Target cell；
Step 123, the frequency sweep data based on the Target cell and the homogeneous-frequency adjacent-domain, and determined according to the degree of correlation
3rd PCI interference coefficient of the Target cell；
Step 124, according to first interference coefficient, the second interference coefficient and third interference coefficient, the mesh is determined
Mark the PCI integrated interference coefficient of cell.
The embodiment of the present invention is based on measurement report MR, backstage switching index and frequency sweep data, interferes Target cell and carries out
Assessment, obtains the integrated interference coefficient of Target cell.
It is primarily based on the PCI interference assessment of measurement report MR, i.e. step 121 includes:
According to the measurement report of the measurement report of Target cell and homogeneous-frequency adjacent-domain, the sampling number of Target cell and same is determined
The sampling number of frequency adjacent area；
According to the sampling number of the sampling number of the Target cell and homogeneous-frequency adjacent-domain, Target cell and homogeneous-frequency adjacent-domain are determined
The degree of correlation based on the measurement report；
According to the degree of correlation based on the measurement report of Target cell and co-frequency cell, Target cell is determined and with frequency neighbour
The level interference coefficient based on measurement report in area；
According to the degree of correlation between the level interference coefficient and the first PCI and the 2nd PCI, determine Target cell and
The interference coefficient based on measurement report of homogeneous-frequency adjacent-domain；
According to the same frequency of Target cell and the interference coefficient and the Target cell based on measurement report of homogeneous-frequency adjacent-domain
The number of adjacent area determines the first PCI interference coefficient of Target cell.
That is the degree of correlation R of two cell of MRmr(Sc-Nc)Are as follows: Rmr(Sc-Nc)=Samplenumber(Sc-Nc)/Sampletotal；
Then two Cell level interference coefficient I of MRrsrp(Sc-Nc)Are as follows: Irsrp(Sc-Nc)=(Krsrp(-∞,3)*Rmr(Sc-Nc)+
Krsrp[3,6]*Rmr(Sc-Nc)+Krsrp[7,9]*Rmr(Sc-Nc)+Krsrp[10,+∞)*Rmr(Sc-Nc))
Level interferes weighted factor: Krsrp(-∞,3)=1 Krsrp[3,6]=0.5, Krsrp[7,9]=0.25, Krsrp[10,+∞)=0,
Weighted factor is supported artificial customized；
Two area interference coefficient IK of MRmr(Sc-Nc)Are as follows: IKmr(Sc-Nc)=Irsrp*Rpci
Then, the first PCI interference coefficient IK of Target cellm:
Wherein, relevant parameter table is as shown in table 2:
Relevant parameter of the table 2 based on measurement report MR
Then switch the PCI interference assessment of index based on backstage, i.e. step 122 includes:
The switching index for switching index and homogeneous-frequency adjacent-domain according to the backstage of Target cell, determines the switching times of Target cell
With the switching times of homogeneous-frequency adjacent-domain；
According to the switching times of the switching times of Target cell and homogeneous-frequency adjacent-domain, the base of Target cell and homogeneous-frequency adjacent-domain is determined
Switch the degree of correlation of index in backstage；
According to the degree of correlation and the first PCI and the 2nd PCI for switching index based on backstage of Target cell and homogeneous-frequency adjacent-domain
Between the degree of correlation, determine the interference coefficient for switching index based on backstage of Target cell and homogeneous-frequency adjacent-domain；
According to the same frequency of Target cell and the interference coefficient and Target cell based on backstage switching index of homogeneous-frequency adjacent-domain
The number of adjacent area determines the 2nd PCI interference coefficient of Target cell.
Switch two cell degree of correlation RhoAre as follows: Rho=HOnumber(Sc-Nc)/HOintraFnumber
Switch two area interference coefficient IKho(Sc-Nc)Are as follows: IKho(Sc-Nc)=HOnumber(Sc-Nc)/HOintraFnumber*Rpci
First PCI interference coefficient IK of Target cellhoAre as follows:
Wherein, relevant parameter table is as follows:
| Field serial number | Field name | Type | Remarks |
| 1 | Scell Name | str | Serving cell title |
| 2 | Sc ENodeb ID | int | Serving cell ENodeb ID |
| 3 | Scell ID | int | Serving cell CELL ID |
| 4 | Sc Earfcn | int | Serving cell frequency point |
| 5 | Sc PCI | int | Serving cell PCI |
| 6 | Ncell Name | str | Homogeneous-frequency adjacent-domain title |
| 7 | Nc Earfcn | int | Homogeneous-frequency adjacent-domain frequency point |
| 8 | Nc PCI | int | Homogeneous-frequency adjacent-domain PCI |
| 9 | HOintraFnumber(Sc-Nc) | int | Homogeneous-frequency adjacent-domain switching times |
| 10 | HOintraFnumber | Int | Homogeneous-frequency adjacent-domain switches total degree |
| … | … | … | … |
Table 3 switches the relevant parameter of index based on backstage
Further, based on the PCI interference assessment of frequency sweep data, i.e. step 123 includes:
According to the frequency sweep data of the frequency sweep data of Target cell and homogeneous-frequency adjacent-domain, the sampling number of Target cell and same is determined
The sampling number of frequency adjacent area；
According to the sampling number of the sampling number of the Target cell and homogeneous-frequency adjacent-domain, Target cell and homogeneous-frequency adjacent-domain are determined
The degree of correlation based on frequency sweep data；
According to the degree of correlation based on the frequency sweep data of Target cell and co-frequency cell, Target cell is determined and with frequency neighbour
The level interference coefficient based on frequency sweep data in area；
According to the degree of correlation between the level interference coefficient and the first PCI and the 2nd PCI, determine Target cell and
The interference coefficient based on frequency sweep data of homogeneous-frequency adjacent-domain；
According to the same frequency of Target cell and the interference coefficient and the Target cell based on frequency sweep data of homogeneous-frequency adjacent-domain
The number of adjacent area determines the 3rd PCI interference coefficient of Target cell.
That is the degree of correlation R of two cells based on frequency sweep datasc(Sc-Nc)Are as follows: Rsc(Sc-Nc)=Samplenumber(Sc-Nc)/
Sampletotal；
The then two Cell level interference coefficient I based on frequency sweep datarsrp(Sc-Nc)Are as follows: Irsrp(Sc-Nc)=(Krsrp(-∞,3)*
Rsc(Sc-Nc)+Krsrp[3,6]*Rsc(Sc-Nc)+Krsrp[7,9]*Rsc(Sc-Nc)+Krsrp[10,+∞)*Rsc(Sc-Nc))
Level interferes weighted factor: Krsrp(-∞,3)=1 Krsrp[3,6]=0.5, Krsrp[7,9]=0.25, Krsrp[10,+∞)=0,
Weighted factor is supported artificial customized；
The two area interference coefficient IK based on frequency sweep datasc(Sc-Nc)Are as follows: IKmr(Sc-Nc)=Irsrp*Rpci
Then, the 3rd PCI interference coefficient IK of Target cellsc:
Wherein, relevant parameter table is as shown in table 4:
Relevant parameter of the table 4 based on frequency sweep data
Finally determine the PCI integrated interference coefficient of the Target cell are as follows: i.e. step 124 includes:
According to first interference coefficient, measurement report interference weighted factor, the second interference coefficient, switching interference weighting because
Son, third interference coefficient and Sweeping nonlinearity weighted factor, determine the PCI integrated interference coefficient of Target cell.
MR interference weighted factor K is defined in the embodiment of the present inventionmr=0.4；Switching interference weighted factor Kho=0.4；Frequency sweep
Interfere weighted factor Ksc=0.2；Wherein, weighted factor is supported artificial customized.The then PCI integrated interference coefficient of Target cell
IKcompAre as follows: IKcomp=Kmr*IKmr+Kho*IKho+Ksc*IKsc
Further, PCI high interference cell identification.Preset the cell PCI high interference thresholding (thresholding i.e. in step 13
Value), the cell greater than the thresholding is judged as PCI high interference cell, need to carry out PCI self-optimizing.PCI high interference cell definitions: small
Area's interference coefficient > PCI high interference thresholding；Threshold value may be set to:
Wherein K=0.95 (adjustable K ∈ (0,1]), N are macro station cell sum.
Finally, the embodiment of the present invention provides the method for selection target PCI, i.e. step 14 includes:
Step 141, according to the PCI integrated interference coefficient of other cells in station, it is small to carry out the selection target in slave station
The target PCI in area；
Step 142, it if not meeting the target PCI of condition in station, is selected in planned range based on PCI optimization constraint condition
Select target PCI；Wherein, PCI optimize constraint condition include: with station cell PCI do not repeat, any cell and homogeneous-frequency adjacent-domain
PCI is not repeated, repeatedly and in preset range PCI is not repeated the PCI of the adjacent area of the two neighboring same frequency of cell.
It is first consistent with the prior art in the above embodiment of the present invention, carry out interior intermodulation of standing；It is being advised if interior intermodulation failure of standing
It draws in range and selects best PCI；Specifically, intermodulation in standing, carries out interior PCI interference coefficient poll calculating of standing based on this principle, really
Fixed optimal PCI；For example, if CELL A is identified as PCI high interference cell, by the IK for calculating CELL Acomp-a, CELL
A IK on the direction of CELL Bcom-a2bWith the IK of CELL Bcomp-b, CELL B is in the direction of CELL A to IKcomp-b2a.When
IKcomp-a2b<IKcomp-a, and IKcom-b2a≤ IKcomp-b, then CELL A and CELL B intermodulation PCI, otherwise CELL A and CELL C
It is compared.If in planning PCI range [a, b], selecting without condition PCI is met in standing and meeting basic constraint condition
PCI, carry out optimal PCI assessment.
Wherein, it is as follows to optimize basic constraint condition by PCI:
PCI with station cell is not repeated；
The PCI of any cell and homogeneous-frequency adjacent-domain is not repeated, and the adjacent area PCI of the two neighboring same frequency of cell is not repeated；
And PCI cannot be repeated within the scope of 1KM.
To sum up, existing PCI self-optimizing only conflicts to PCI, obscures, mod3, mod6, and mod30 optimizes assessment, the present invention
PCI provided by the above embodiment interference self-organization method on this basis, comprehensively consider PCI m0, m1 interference so that PCI
Assessment is more comprehensively；On the other hand existing PCI self-optimizing is based only on MR data, uses unified standard when handling PCI interference,
The PCI interference self-organization method that the above embodiment of the present invention provides is based on MR, backstage switching index and frequency sweep data, according to not
With PCI interference type to the influence degree of cell, assessment is weighted to cell PCI interference, PCI optimization is more acurrate；And it is existing
PCI optimization can only provide a kind of optimal PCI method of screening, and the PCI interference self-organization method that the above embodiment of the present invention provides mentions
For how to identify PCI high interference cell, and optimize, improve PCI optimization accuracy so that PCI optimization can flexibly and
When reply network change.
For realization above-mentioned purpose more, as shown in Fig. 2, the embodiment of the present invention also provides a kind of Physical Cell Identifier PCI
Interfere the device of self-optimizing, comprising:
Module 21 is obtained, for obtaining the degree of correlation between the first PCI and the 2nd PCI；First PCI is small with target
The corresponding PCI in area, the 2nd PCI are PCI corresponding with the homogeneous-frequency adjacent-domain of Target cell；
Coefficient determination module 22 switches for the measurement report based on the Target cell and the homogeneous-frequency adjacent-domain, backstage
Index and frequency sweep data, and determine according to the degree of correlation PCI integrated interference coefficient of the Target cell；
Determining module 23 is interfered, if the PCI integrated interference coefficient for the Target cell is greater than a threshold value, determines institute
Stating Target cell is PCI high interference cell；
Modified module 24 is selected, for being the Target cell selection target PCI according to preset rules, and will be with the mesh
The corresponding PCI of mark cell is revised as the target PCI.
Specifically, acquisition module 21 described in the above embodiment of the present invention includes:
Acquisition submodule, for obscuring interference according to the conflict between the first PCI and the 2nd PCI, mould 3 interferes, mould 6 is dry
Disturb, mould 30 interference, m0 interference and m1 interference, determine the degree of correlation between the first PCI and the 2nd PCI.
Specifically, being determined between the first PCI and the 2nd PCI in acquisition submodule described in the above embodiment of the present invention
The formula of the degree of correlation are as follows:
Rpci=Km*Rm+Km3*Rm3+Km6*Rm6+Km30*Rm30+Km0*Rm0+Km1*Rm1
Wherein, the RpciFor the degree of correlation between the first PCI and the 2nd PCI, the Km、Km3、Km6、Km30、Km0And Km1
For the interference weighted factor between the first PCI and the 2nd PCI, the RmIt is mixed for the conflict of the first PCI and the 2nd PCI
Confuse interference correlation, the Rm3For 3 interference correlation of mould of the first PCI and the 2nd PCI, the Rm6For the first PCI
With 6 interference correlation of mould of the 2nd PCI, the Rm30For 30 interference correlation of mould of the first PCI and the 2nd PCI, the Rm0
For the m0 interference correlation of the first PCI and the 2nd PCI, the Rm1Correlation is interfered for the m1 of the first PCI and the 2nd PCI
Degree.
Specifically, coefficient determination module 22 described in the above embodiment of the present invention includes:
First coefficient determines submodule, for the measurement report based on the Target cell and the homogeneous-frequency adjacent-domain, and root
The first PCI interference coefficient of the Target cell is determined according to the degree of correlation；
Second coefficient determines submodule, for switching index based on the backstage of the Target cell and the homogeneous-frequency adjacent-domain,
And the 2nd PCI interference coefficient of the Target cell is determined according to the degree of correlation；
Third coefficient determines submodule, for the frequency sweep data based on the Target cell and the homogeneous-frequency adjacent-domain, and root
The 3rd PCI interference coefficient of the Target cell is determined according to the degree of correlation；
4th coefficient determines submodule, for being interfered according to first interference coefficient, the second interference coefficient and third
Coefficient determines the PCI integrated interference coefficient of the Target cell.
Specifically, the first coefficient described in the above embodiment of the present invention determines that submodule includes:
First sampling unit, for determining target according to the measurement report of Target cell and the measurement report of homogeneous-frequency adjacent-domain
The sampling number of cell and the sampling number of homogeneous-frequency adjacent-domain；
First correlation unit, for determining according to the sampling number of the Target cell and the sampling number of homogeneous-frequency adjacent-domain
The degree of correlation based on the measurement report of Target cell and homogeneous-frequency adjacent-domain；
First level interfere unit, for according to Target cell to co-frequency cell based on the related of the measurement report
Degree, determines the level interference coefficient based on measurement report of Target cell and homogeneous-frequency adjacent-domain；
First interference coefficient unit, for according between the level interference coefficient and the first PCI and the 2nd PCI
The degree of correlation determines the interference coefficient based on measurement report of Target cell and homogeneous-frequency adjacent-domain；
First factor determination unit, for according to Target cell and homogeneous-frequency adjacent-domain based on the interference coefficient of measurement report with
And the number of the homogeneous-frequency adjacent-domain of the Target cell, determine the first PCI interference coefficient of Target cell.
Specifically, the second coefficient described in the above embodiment of the present invention determines that submodule includes:
Switch unit determines target for switching the switching index of index and homogeneous-frequency adjacent-domain according to the backstage of Target cell
The switching times of cell and the switching times of homogeneous-frequency adjacent-domain；
Second correlation unit, for determining target according to the switching times of Target cell and the switching times of homogeneous-frequency adjacent-domain
The degree of correlation for switching index based on backstage of cell and homogeneous-frequency adjacent-domain；
Second interference coefficient unit, for the degree of correlation for switching index based on backstage according to Target cell and homogeneous-frequency adjacent-domain
And the first degree of correlation between PCI and the 2nd PCI, determine Target cell and homogeneous-frequency adjacent-domain based on the dry of backstage switching index
Disturb coefficient；
Second factor determination unit, for the interference system for switching index based on backstage according to Target cell and homogeneous-frequency adjacent-domain
The number of several and Target cell homogeneous-frequency adjacent-domain, determines the 2nd PCI interference coefficient of Target cell.
Specifically, third coefficient described in the above embodiment of the present invention determines that submodule includes:
Second sampling unit, for determining target according to the frequency sweep data of Target cell and the frequency sweep data of homogeneous-frequency adjacent-domain
The sampling number of cell and the sampling number of homogeneous-frequency adjacent-domain；
Third correlation unit, for determining according to the sampling number of the Target cell and the sampling number of homogeneous-frequency adjacent-domain
The degree of correlation based on frequency sweep data of Target cell and homogeneous-frequency adjacent-domain；
Second electrical level interfere unit, for according to Target cell to co-frequency cell based on the related of the frequency sweep data
Degree, determines the level interference coefficient based on frequency sweep data of Target cell and homogeneous-frequency adjacent-domain；
Third interference coefficient unit, for according between the level interference coefficient and the first PCI and the 2nd PCI
The degree of correlation determines the interference coefficient based on frequency sweep data of Target cell and homogeneous-frequency adjacent-domain；
Third factor determination unit, for according to the interference coefficient based on frequency sweep data of Target cell and homogeneous-frequency adjacent-domain with
And the number of the homogeneous-frequency adjacent-domain of the Target cell, determine the 3rd PCI interference coefficient of Target cell.
Specifically, the 4th coefficient described in the above embodiment of the present invention determines that submodule includes:
4th factor determination unit, for according to first interference coefficient, measurement report interference weighted factor, second dry
Coefficient, switching interference weighted factor, third interference coefficient and Sweeping nonlinearity weighted factor are disturbed, determines that the PCI of Target cell is comprehensive
Close interference coefficient.
Specifically, selection modified module 24 described in the above embodiment of the present invention includes:
First choice modifies submodule, for the PCI integrated interference coefficient according to other cells in station, carries out in slave station
Select the target PCI of the Target cell；
Second selection modification submodule, if the target PCI for not meeting condition in standing, based on PCI optimization constraint item
Part selection target PCI in planned range；Wherein, PCI optimize constraint condition include: with station cell PCI do not repeat, Ren He little
The PCI of area and homogeneous-frequency adjacent-domain is not repeated, the PCI of the adjacent area of the two neighboring same frequency of cell not repeat and preset range in PCI not
It repeats.
Specifically, device described in the above embodiment of the present invention further include:
Target determination module is not traffic affecting alarm cell for determination and was not coverage cell and did not covered
Lid abnormal cell is Target cell.
It should be noted that the device of the small mark PCI interference self-optimizing of physics provided in an embodiment of the present invention is using upper
Tell the device of the method for PCI interference self-optimizing, then all embodiments of the method for above-mentioned PCI interference self-optimizing are suitable for the dress
It sets, and can reach the same or similar beneficial effect.
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principles of the present invention, several improvements and modifications can also be made, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (18)
1. a kind of method of Physical Cell Identifier PCI interference self-optimizing characterized by comprising
Obtain the degree of correlation between the first PCI and the 2nd PCI；First PCI is PCI corresponding with Target cell, described the
Two PCI are PCI corresponding with the homogeneous-frequency adjacent-domain of Target cell；
Measurement report, backstage switching index and frequency sweep data based on the Target cell and the homogeneous-frequency adjacent-domain, and according to
The degree of correlation determines the PCI integrated interference coefficient of the Target cell；
If the PCI integrated interference coefficient of the Target cell is greater than a threshold value, determine that the Target cell is that PCI high interference is small
Area；
It is the Target cell selection target PCI according to preset rules, and PCI corresponding with the Target cell is revised as institute
State target PCI；
It is described to include: for the step of Target cell selection target PCI according to preset rules
According to the PCI integrated interference coefficient of other cells in station, the target PCI of the selection Target cell in slave station is carried out；
If not meeting the target PCI of condition in standing, constraint condition selection target PCI in planned range is optimized based on PCI；Its
In, PCI optimization constraint condition include: with station cell PCI do not repeat, the PCI of any cell and homogeneous-frequency adjacent-domain is not repeated, cell
Repeatedly and in preset range PCI is not repeated the PCI of the adjacent area of two neighboring same frequency.
2. the method for Physical Cell Identifier PCI interference self-optimizing according to claim 1, which is characterized in that the acquisition
The step of degree of correlation between first PCI and the 2nd PCI includes:
According to the conflict between the first PCI and the 2nd PCI obscure interference, mould 3 interference, mould 6 interference, mould 30 interference, m0 interference with
And m1 interference, determine the degree of correlation between the first PCI and the 2nd PCI.
3. the method for Physical Cell Identifier PCI interference self-optimizing according to claim 2, which is characterized in that the determination
The formula of the degree of correlation between first PCI and the 2nd PCI are as follows:
Rpci=Km*Rm+Km3*Rm3+Km6*Rm6+Km30*Rm30+Km0*Rm0+Km1*Rm1；
Wherein, the RpciFor the degree of correlation between the first PCI and the 2nd PCI, the Km、Km3、Km6、Km30、Km0And Km1For institute
State the interference weighted factor between the first PCI and the 2nd PCI, the RmFor the first PCI and the 2nd PCI conflict obscure it is dry
Disturb the degree of correlation, the Rm3For 3 interference correlation of mould of the first PCI and the 2nd PCI, the Rm6For the first PCI and
6 interference correlation of mould of two PCI, the Rm30For 30 interference correlation of mould of the first PCI and the 2nd PCI, the Rm0For institute
State the m0 interference correlation of the first PCI and the 2nd PCI, the Rm1For the m1 interference correlation of the first PCI and the 2nd PCI.
4. the method for Physical Cell Identifier PCI interference self-optimizing according to claim 1, which is characterized in that described to be based on
The measurement report of the Target cell and the homogeneous-frequency adjacent-domain, backstage switching index and frequency sweep data, and according to the correlation
Degree determines that the step of PCI integrated interference coefficient of the Target cell includes:
Measurement report based on the Target cell and the homogeneous-frequency adjacent-domain, and the Target cell is determined according to the degree of correlation
The first PCI interference coefficient；
Switch index based on the backstage of the Target cell and the homogeneous-frequency adjacent-domain, and the target is determined according to the degree of correlation
2nd PCI interference coefficient of cell；
Frequency sweep data based on the Target cell and the homogeneous-frequency adjacent-domain, and the Target cell is determined according to the degree of correlation
The 3rd PCI interference coefficient；
According to the first PCI interference coefficient, the 2nd PCI interference coefficient and the 3rd PCI interference coefficient, determine that the target is small
The PCI integrated interference coefficient in area.
5. the method for Physical Cell Identifier PCI interference self-optimizing according to claim 4, which is characterized in that described to be based on
The measurement report of the Target cell and the homogeneous-frequency adjacent-domain, and the first of the Target cell is determined according to the degree of correlation
The step of PCI interference coefficient includes:
According to the measurement report of the measurement report of Target cell and homogeneous-frequency adjacent-domain, the sampling number of Target cell is determined and with frequency neighbour
The sampling number in area；
According to the sampling number of the sampling number of the Target cell and homogeneous-frequency adjacent-domain, the base of Target cell and homogeneous-frequency adjacent-domain is determined
In the degree of correlation of the measurement report；
According to the degree of correlation based on the measurement report of Target cell and co-frequency cell, Target cell and homogeneous-frequency adjacent-domain are determined
Level interference coefficient based on measurement report；
According to the degree of correlation between the level interference coefficient and the first PCI and the 2nd PCI, Target cell is determined and with frequency
The interference coefficient based on measurement report of adjacent area；
According to the homogeneous-frequency adjacent-domain of Target cell and the interference coefficient and the Target cell based on measurement report of homogeneous-frequency adjacent-domain
Number, determine the first PCI interference coefficient of Target cell.
6. the method for Physical Cell Identifier PCI interference self-optimizing according to claim 4, which is characterized in that based on described
The backstage of Target cell and the homogeneous-frequency adjacent-domain switches index, and determines the second of the Target cell according to the degree of correlation
The step of PCI interference coefficient includes:
The switching index for switching index and homogeneous-frequency adjacent-domain according to the backstage of Target cell determines the switching times of Target cell and same
The switching times of frequency adjacent area；
According to the switching times of the switching times of Target cell and homogeneous-frequency adjacent-domain, determine Target cell and homogeneous-frequency adjacent-domain based on rear
The degree of correlation of platform switching index；
According between Target cell and the degree of correlation and the first PCI and the 2nd PCI based on backstage switching index of homogeneous-frequency adjacent-domain
The degree of correlation, determine the interference coefficient for switching index based on backstage of Target cell and homogeneous-frequency adjacent-domain；
According to the homogeneous-frequency adjacent-domain of Target cell and the interference coefficient and Target cell based on backstage switching index of homogeneous-frequency adjacent-domain
Number, determine the 2nd PCI interference coefficient of Target cell.
7. the method for Physical Cell Identifier PCI interference self-optimizing according to claim 4, which is characterized in that described to be based on
The frequency sweep data of the Target cell and the homogeneous-frequency adjacent-domain, and determine according to the degree of correlation third of the Target cell
The step of PCI interference coefficient includes:
According to the frequency sweep data of the frequency sweep data of Target cell and homogeneous-frequency adjacent-domain, the sampling number of Target cell is determined and with frequency neighbour
The sampling number in area；
According to the sampling number of the sampling number of the Target cell and homogeneous-frequency adjacent-domain, the base of Target cell and homogeneous-frequency adjacent-domain is determined
In the degree of correlation of frequency sweep data；
According to the degree of correlation based on the frequency sweep data of Target cell and co-frequency cell, Target cell and homogeneous-frequency adjacent-domain are determined
Level interference coefficient based on frequency sweep data；
According to the degree of correlation between the level interference coefficient and the first PCI and the 2nd PCI, Target cell is determined and with frequency
The interference coefficient based on frequency sweep data of adjacent area；
According to the homogeneous-frequency adjacent-domain of Target cell and the interference coefficient and the Target cell based on frequency sweep data of homogeneous-frequency adjacent-domain
Number, determine the 3rd PCI interference coefficient of Target cell.
8. the method for Physical Cell Identifier PCI interference self-optimizing according to claim 4, which is characterized in that the basis
The first PCI interference coefficient, the 2nd PCI interference coefficient and the 3rd PCI interference coefficient, determine the PCI of the Target cell
The step of integrated interference coefficient includes:
According to the first PCI interference coefficient, measurement report interference weighted factor, the 2nd PCI interference coefficient, switching interference weighting
The factor, the 3rd PCI interference coefficient and Sweeping nonlinearity weighted factor determine the PCI integrated interference coefficient of Target cell.
9. the method for Physical Cell Identifier PCI interference self-optimizing according to claim 1, which is characterized in that the acquisition
Before the degree of correlation between first PCI and the 2nd PCI further include:
Determination is not traffic affecting alarm cell and was not coverage cell and was not to cover abnormal cell as Target cell.
10. a kind of device of Physical Cell Identifier PCI interference self-optimizing characterized by comprising
Module is obtained, for obtaining the degree of correlation between the first PCI and the 2nd PCI；First PCI is corresponding with Target cell
PCI, the 2nd PCI be PCI corresponding with the homogeneous-frequency adjacent-domain of Target cell；
Coefficient determination module, for based on the Target cell and the homogeneous-frequency adjacent-domain measurement report, backstage switching index with
And frequency sweep data, and determine according to the degree of correlation PCI integrated interference coefficient of the Target cell；
Determining module is interfered, if the PCI integrated interference coefficient for the Target cell is greater than a threshold value, determines the target
Cell is PCI high interference cell；
Modified module is selected, for being the Target cell selection target PCI according to preset rules, and will be with the Target cell
Corresponding PCI is revised as the target PCI；
The selection modified module includes:
First choice modifies submodule, for the PCI integrated interference coefficient according to other cells in station, carries out selection in slave station
The target PCI of the Target cell；
Second selection modification submodule is existed if the target PCI for not meeting condition in standing based on PCI optimization constraint condition
Selection target PCI in planned range；Wherein, PCI optimize constraint condition include: with station cell PCI do not repeat, any cell with
The PCI of homogeneous-frequency adjacent-domain is not repeated, repeatedly and in preset range PCI is not repeated the PCI of the adjacent area of the two neighboring same frequency of cell.
11. the device of Physical Cell Identifier PCI interference self-optimizing according to claim 10, which is characterized in that described to obtain
Modulus block includes:
Acquisition submodule, for obscuring interference, the interference of mould 3, the interference of mould 6, mould according to the conflict between the first PCI and the 2nd PCI
30 interference, m0 interference and m1 interference, determine the degree of correlation between the first PCI and the 2nd PCI.
12. the device of Physical Cell Identifier PCI interference self-optimizing according to claim 11, which is characterized in that described to obtain
Take the formula that the degree of correlation between the first PCI and the 2nd PCI is determined in submodule are as follows:
Rpci=Km*Rm+Km3*Rm3+Km6*Rm6+Km30*Rm30+Km0*Rm0+Km1*Rm1
Wherein, the RpciFor the degree of correlation between the first PCI and the 2nd PCI, the Km、Km3、Km6、Km30、Km0And Km1For institute
State the interference weighted factor between the first PCI and the 2nd PCI, the RmFor the first PCI and the 2nd PCI conflict obscure it is dry
Disturb the degree of correlation, the Rm3For 3 interference correlation of mould of the first PCI and the 2nd PCI, the Rm6For the first PCI and
6 interference correlation of mould of two PCI, the Rm30For 30 interference correlation of mould of the first PCI and the 2nd PCI, the Rm0For institute
State the m0 interference correlation of the first PCI and the 2nd PCI, the Rm1For the m1 interference correlation of the first PCI and the 2nd PCI.
13. the device of Physical Cell Identifier PCI interference self-optimizing according to claim 10, which is characterized in that the system
Counting determining module includes:
First coefficient determines submodule, for the measurement report based on the Target cell and the homogeneous-frequency adjacent-domain, and according to institute
State the first PCI interference coefficient that the degree of correlation determines the Target cell；
Second coefficient determines submodule, for switching index, and root based on the backstage of the Target cell and the homogeneous-frequency adjacent-domain
The 2nd PCI interference coefficient of the Target cell is determined according to the degree of correlation；
Third coefficient determines submodule, for the frequency sweep data based on the Target cell and the homogeneous-frequency adjacent-domain, and according to institute
State the 3rd PCI interference coefficient that the degree of correlation determines the Target cell；
4th coefficient determines submodule, for according to the first PCI interference coefficient, the 2nd PCI interference coefficient and the 3rd PCI
Interference coefficient determines the PCI integrated interference coefficient of the Target cell.
14. the device of Physical Cell Identifier PCI according to claim 13 interference self-optimizing, which is characterized in that described the
One coefficient determines that submodule includes:
First sampling unit, for determining Target cell according to the measurement report of Target cell and the measurement report of homogeneous-frequency adjacent-domain
Sampling number and homogeneous-frequency adjacent-domain sampling number；
First correlation unit, for determining target according to the sampling number of the Target cell and the sampling number of homogeneous-frequency adjacent-domain
The degree of correlation based on the measurement report of cell and homogeneous-frequency adjacent-domain；
First level interferes unit, for the degree of correlation based on the measurement report according to Target cell and co-frequency cell, really
The level interference coefficient based on measurement report of the cell that sets the goal and homogeneous-frequency adjacent-domain；
First interference coefficient unit, for according to the correlation between the level interference coefficient and the first PCI and the 2nd PCI
Degree, determines the interference coefficient based on measurement report of Target cell and homogeneous-frequency adjacent-domain；
First factor determination unit, for according to Target cell and homogeneous-frequency adjacent-domain based on measurement report interference coefficient and institute
The number for stating the homogeneous-frequency adjacent-domain of Target cell determines the first PCI interference coefficient of Target cell.
15. the device of Physical Cell Identifier PCI according to claim 13 interference self-optimizing, which is characterized in that described the
Two coefficients determine that submodule includes:
Switch unit determines Target cell for switching the switching index of index and homogeneous-frequency adjacent-domain according to the backstage of Target cell
Switching times and homogeneous-frequency adjacent-domain switching times；
Second correlation unit, for determining Target cell according to the switching times of Target cell and the switching times of homogeneous-frequency adjacent-domain
With the degree of correlation for switching index based on backstage of homogeneous-frequency adjacent-domain；
Second interference coefficient unit, for according to Target cell and homogeneous-frequency adjacent-domain based on backstage switching index the degree of correlation and
The degree of correlation between first PCI and the 2nd PCI determines the interference system for switching index based on backstage of Target cell and homogeneous-frequency adjacent-domain
Number；
Second factor determination unit, for according to the interference coefficient based on backstage switching index of Target cell and homogeneous-frequency adjacent-domain with
And the number of the homogeneous-frequency adjacent-domain of Target cell, determine the 2nd PCI interference coefficient of Target cell.
16. the device of Physical Cell Identifier PCI according to claim 13 interference self-optimizing, which is characterized in that described the
Three coefficients determine that submodule includes:
Second sampling unit, for determining Target cell according to the frequency sweep data of Target cell and the frequency sweep data of homogeneous-frequency adjacent-domain
Sampling number and homogeneous-frequency adjacent-domain sampling number；
Third correlation unit, for determining target according to the sampling number of the Target cell and the sampling number of homogeneous-frequency adjacent-domain
The degree of correlation based on frequency sweep data of cell and homogeneous-frequency adjacent-domain；
Second electrical level interferes unit, for the degree of correlation based on the frequency sweep data according to Target cell and co-frequency cell, really
The level interference coefficient based on frequency sweep data of the cell that sets the goal and homogeneous-frequency adjacent-domain；
Third interference coefficient unit, for according to the correlation between the level interference coefficient and the first PCI and the 2nd PCI
Degree, determines the interference coefficient based on frequency sweep data of Target cell and homogeneous-frequency adjacent-domain；
Third factor determination unit, for according to Target cell and homogeneous-frequency adjacent-domain based on frequency sweep data interference coefficient and institute
The number for stating the homogeneous-frequency adjacent-domain of Target cell determines the 3rd PCI interference coefficient of Target cell.
17. the device of Physical Cell Identifier PCI according to claim 13 interference self-optimizing, which is characterized in that described the
Four coefficients determine that submodule includes:
4th factor determination unit, for interfering weighted factor, the 2nd PCI according to the first PCI interference coefficient, measurement report
Interference coefficient, switching interference weighted factor, the 3rd PCI interference coefficient and Sweeping nonlinearity weighted factor, determine Target cell
PCI integrated interference coefficient.
18. the device of Physical Cell Identifier PCI interference self-optimizing according to claim 10, which is characterized in that the dress
It sets further include:
Target determination module is not traffic affecting alarm cell for determination and was not coverage cell and was not that covering is different
Chang little Qu is Target cell.
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| US11374671B2 (en) * | 2019-08-09 | 2022-06-28 | Qualcomm Incorporated | Physical cell identifier (PCI) selection based on primary synchronization signal (PSS) waveform |
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