CN104735717B - Cell PCI configuration methods and system - Google Patents
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Abstract
A kind of cell PCI configuration methods of present invention offer and system, neighbour's measurement data and switch data are integrated to analyze the tightness degree of minizone, related coefficient between acquisition co-frequency cell, repeated dispensing is carried out to cell PCI values according to related coefficient between co-frequency cell and interference value calculates, interference value result of calculation is accurate, cell PCI apportioning costs are repeatedly adjusted later, form a variety of different PCI programmes, and it calculates separately the whole network in different schemes and interferes total value, the update scheme for choosing interference total value minimum carries out convergence judgement, when judging to restrain, cell PCI is configured according to newer cell PCI programmes, realize the reasonable disposition to cell PCI values.
Description
Technical field
The present invention relates to fields of communication technology, more particularly to cell PCI configuration methods and system.
Background technology
PCI is the Physical Cell Identifier of LTE (Long Term Evolution, long term evolution) network, for distinguishing difference
The wireless signal of cell, value range 0-503, calculation formula are：PCI=PSS (primary synchronization signal)+3SSS (auxiliary synchronizations
Signal), the value range of PSS is 0-2, and the value range of SSS is 0-167.
PCI planning should follow following constraints：1, the PCI moulds 3 of different community are different under same base station, i.e. mod
(PCI1,3) ≠ mod (PCI2,3)；2, the residual value of neighboring community PCI moulds 6 is different, i.e. mod (PCI1,6) ≠ mod (PCI2,6)；
3, the PCI between all adjacent areas is differed, i.e. PCI (1) ≠ PCI (2)；4,30 residual value of neighboring community PCI moulds is different, i.e. mod
(PCI1,30) ≠ mod (PCI2,30).
It can be seen that in LTE technical fields, PCI planning is a crucial technology, and the PCI distributed between neighboring community is not
When, it may occur that interference influences the performance of LTE communication network.
Invention content
Based on this, it is necessary to for be badly in need of at present it is a kind of can reasonable disposition cell PCI method, it is ensured that LTE communication network
Performance issue, a kind of rational cell PCI configuration methods of configuration and system are provided
A kind of cell PCI configuration methods, including step：
Network foundation information is read, and according to the network foundation information, obtains adjacent measurement data；
Reading service cell is switched to each co-frequency cell data, and single co-frequency cell data are switched to according to serving cell
And serving cell is switched to all homogeneous frequency adjacent area data, obtains switch data；
The adjacent measurement data and the switch data are weighted, related coefficient between co-frequency cell is obtained；
Related coefficient between the co-frequency cell of all cells in calculating the whole network, and according to related coefficient between the co-frequency cell of cell
From being ranked up successively to cell to weak sequence by force, ranking cells table is obtained；
According to the ranking cells table successively by the whole network it is all it is small divide into multiple processing sections, successively to each processing
Cell in section carries out PCI value distribution, wherein the cell in processing section carries out the distribution of PCI values and is specially：To individually handling
The strongest cell of related coefficient between co-frequency cell in section, is randomly assigned different PCI values, according to related coefficient between co-frequency cell,
Calculate under different PCI values, the interference value of the strongest cell of related coefficient between co-frequency cell, choose interference value be minimum value when pair
The PCI values answered, circular treatment are chosen until completing the PCI values that all cells are different in entire processing section；
It records each PCI apportioning costs of cell, the interference value of each cell and the whole network in the whole network and interferes total value, formed just
Beginning cell PCI programme；
The cell for choosing interference value TOP n%, updates the PCI apportioning costs of the cell of selection, and it is total to recalculate the whole network interference
Value, if the whole network interferes total value before the whole network interference total value is less than update in updated PCI programmes, before abandoning update
PCI programmes form new cell PCI programmes；
The interference value for calculating each cell of the whole network in new cell PCI programmes, according to the interference of each cell of the whole network
It is worth descending sequence to be ranked up the whole network cell, obtains area interference value sequencing table, calculates area interference value sequencing table
Cell in the interference total value T1 and area interference value sequencing table of the cell of middle TOP m% between TOP m% and TOP 2m%
Total value T2 is interfered, if the absolute value of difference is less than predetermined threshold value T between T1 and T2, judges newer cell PCI programmes
Convergence；
When newer cell PCI programmes restrain, cell PCI is carried out according to newer cell PCI programmes
Configuration.
A kind of cell PCI configurations system, including：
Adjacent measurement data acquisition module for reading network foundation information, and according to the network foundation information, obtains adjacent
Measurement data；
Switch data acquisition module is switched to each co-frequency cell data, according to serving cell for reading service cell
It is switched to single co-frequency cell data and serving cell is switched to all homogeneous frequency adjacent area data, obtain switch data；
Related coefficient acquisition module between co-frequency cell, for being weighted to the adjacent measurement data and the switch data
It calculates, obtains related coefficient between co-frequency cell；
Ranking cells table acquisition module, for calculating in the whole network related coefficient between the co-frequency cell of all cells, and according to
Related coefficient obtains ranking cells table from being ranked up successively to cell to weak sequence by force between the co-frequency cell of cell；
PCI values choose module, for small dividing into multiple processing by all in the whole network successively according to the ranking cells table
Section carries out PCI value distribution, wherein the cell in processing section carries out PCI values point to the cell in each processing section successively
With specially：Between individually handling in section the strongest cell of related coefficient co-frequency cell, different PCI values are randomly assigned, according to
Related coefficient between co-frequency cell calculates under different PCI values, the interference value of the strongest cell of related coefficient between co-frequency cell, choosing
Corresponding PCI values when to take interference value be minimum value, circular treatment, until it is different to complete all cells in entire processing section
PCI values are chosen；
Initial plan scheme acquisition module, the interference for recording the PCI apportioning costs, each cell of each cell in the whole network
Value and the whole network interfere total value, form initial cell PCI programmes；
Update module, the cell for choosing interference value TOP n% update the PCI apportioning costs of the cell of selection, count again
It calculates the whole network and interferes total value, if the whole network interferes total value before the whole network interference total value is less than update in updated PCI programmes, lose
The PCI programmes before update are abandoned, new cell PCI programmes are formed；
Restrain determination module, the interference value for calculating each cell of the whole network in new cell PCI programmes, according to complete
The descending sequence of interference value for netting each cell is ranked up the whole network cell, obtains area interference value sequencing table, calculates
TOP m% and TOP in the interference total value T1 of the cell of TOP m% and area interference value sequencing table in area interference value sequencing table
The interference total value T2 of cell between 2m% judges newer if the absolute value of difference is less than predetermined threshold value T between T1 and T2
Cell PCI programmes restrain；
Configuration module is used for when newer cell PCI programmes restrain, according to newer cell PCI programmes
Cell PCI is configured.
Cell PCI configuration methods and system of the present invention integrate neighbour's measurement data and switch data to analyze the tight of minizone
Close degree, obtain co-frequency cell between related coefficient, according to related coefficient between co-frequency cell to cell PCI values carry out repeated dispensing and
Interference value calculates, and interference value result of calculation is accurate, and repeatedly adjustment cell PCI apportioning costs, a variety of different PCI of formation are planned later
Scheme, and calculate separately the whole network in different schemes and interfere total value, the update scheme for choosing interference total value minimum carries out convergence judgement,
When judging to restrain, cell PCI is configured according to newer cell PCI programmes, is realized to the reasonable of cell PCI values
Configuration.
Description of the drawings
Fig. 1 is the flow diagram of the one of embodiment of cell PCI configuration methods of the present invention；
Fig. 2 is the refinement flow diagram of step S300 in Fig. 1；
Fig. 3 is the structural schematic diagram that cell PCI of the present invention configures the one of embodiment of system；
Fig. 4 is the refinement structural schematic diagram of related coefficient acquisition module 300 between co-frequency cell in Fig. 3.
Specific implementation mode
As shown in Figure 1, a kind of cell PCI configuration methods, including step：
S100：Network foundation information is read, and according to the network foundation information, obtains adjacent measurement data.
Network foundation information may include cell name, cell longitude and latitude, cell azimuth, ECGI (E-UTRAN Cell
Global Identifier, E-UTRAN Cell Global Identifier) and neighboring BS information.In a communication network, it can delineate more
Unique identification marking is distinguished to each physical area in order to distinguish these cells in a physical area --- PCI, entire LTE nets
Network is a huge network, in order to which the cell required to look up (serving cell) is accurately positioned, is needed from cell name, cell
The data analyses such as longitude and latitude, cell azimuth and ECGI obtain.In entire LTE network, there may be association between cell,
It will there are associated cells to be known as adjacent area with serving cell.The degree of association between different community is different, herein, according to network
After basic information cell of origin, the adjacent measurement data of cell is obtained, the association between cell is reacted using adjacent measurement data
Degree.Common-frequency cell signal interaural correlation coefficient CoRsi can be obtained according to adjacent measurement data in one of the embodiments,
CoRsi refers to same frequency peripheral cell related coefficient between serving cell co-frequency cell, i.e., peripheral cell I is serving cell S's
Occur in measurement report and difference in signal strength is more than the ratio for presetting handoff threshold.Non-essential, it is 3db to preset handoff threshold.
Step S100 may include in one of the embodiments,：
Step 1：Read network foundation information, wherein the network foundation information include cell name, cell longitude and latitude,
Cell azimuth, ECGI and neighboring BS information.Network foundation information, can be according to the either entire LTE nets of historical empirical data
The relevant data and Geographic mapping equipment that network preserves when building are obtained from collection.
Step 2：According to the network foundation information, serving cell and peripheral cell are measured, obtain peripheral cell
With the measurement report of serving cell.According to network foundation information, it is small that some service can be positioned in huge LTE network
Area measures serving cell and peripheral cell after positioning the serving cell, obtains peripheral cell and serving cell
Measurement report.
Step 3：It analyzes peripheral cell presence signal strength difference in the measurement report of serving cell and is more than preset signals
The ratio of threshold value obtains adjacent measurement data.Common-frequency cell signal interaural correlation coefficient CoRsi may be used to embody adjacent measurement
Data, CoRsi refer to that same frequency peripheral cell I related coefficients between serving cell co-frequency cell, i.e. peripheral cell I are small in service
Occur in the measurement report of area S and difference in signal strength is more than the ratio for presetting handoff threshold.Non-essential, default handoff threshold is
3db。
S200：Reading service cell is switched to each co-frequency cell data, is switched to according to serving cell single small with frequency
Area's data and serving cell are switched to all homogeneous frequency adjacent area data, obtain switch data.
The process that signal is switched to same another cell of frequency from a cell is known as co-frequency cell switching, if signal is two
Switching times are more between a co-frequency cell, and the degree of association is closer between showing two cells.Serving cell is switched to often
A co-frequency cell data can be based on real time data monitoring, acquisition obtain, such as can be realized in existing base station in real time monitoring,
It is all also just to understand that serving cell is switched to after obtaining serving cell and being switched to each co-frequency cell data for acquisition
Homogeneous frequency adjacent area data, later again by serving cell be switched to single co-frequency cell data be switched to than upper serving cell it is all
Homogeneous frequency adjacent area data obtain switch data.Switching is embodied using switching proportion Hosi in one of the embodiments,
Data, Hosi：Serving cell S cuts out application always to cutting out application number/serving cell S to homogeneous-frequency adjacent-domain N to all homogeneous-frequency adjacent-domains
Number.
S300：The adjacent measurement data and the switch data are weighted, phase relation between co-frequency cell is obtained
Number.
Herein, the association between cell is reflected using weighted calculation mode, comprehensive neighbour's measurement data and switch data
Degree obtains related coefficient between co-frequency cell.Weighted value can be according to historical empirical data, experts database data in weight computation process
It obtains.
S400：Related coefficient between the co-frequency cell of all cells in calculating the whole network, and according to phase between the co-frequency cell of cell
Relationship number obtains ranking cells table from being ranked up successively to cell to weak sequence by force.
There are many cells in the whole network, phase relation between co-frequency cell is calculated according to step S100, S200 and S300
Number, related coefficient between the co-frequency cell of each cell record, according to related coefficient between co-frequency cell from (big) by force to weak (small)
Sequence cell is ranked up successively, can obtain a ranking cells table according to ranking results.It, can be in practical operation
Related coefficient between the corresponding co-frequency cell of each cell is marked in ranking cells table.
S500：According to the ranking cells table successively by the whole network it is all it is small divide into multiple processing sections, successively to every
Cell in a processing section carries out PCI value distribution, wherein the cell in processing section carries out the distribution of PCI values and is specially：To list
The strongest cell of related coefficient between co-frequency cell, is randomly assigned different PCI values in a processing section, according to related between co-frequency cell
Coefficient calculates under different PCI values, the interference value of the strongest cell of related coefficient between co-frequency cell, and it is minimum to choose interference value
Corresponding PCI values when value, circular treatment are chosen until completing the PCI values that all cells are different in entire processing section.
Ranking cells table is ranked up all cells in the whole network, by it is all it is small divide into multiple processing sections, according to
The secondary cell to each processing section carries out PCI value distribution.Each processing section can be identical comprising number of cells, such as will be small
Preceding 6 conducts first handle section, handle section as third using 7-12 as second processing section, 13-18 in area's sequencing table
Etc..First to carrying out PCI distribution in the cell to second processing section after cell progress PCI value distribution in the first processing section
And so on, until completing the PCI values distribution of all cells in all processing sections of entire LTE network.
By taking the first processing section as an example, PCI values are carried out to the cell in processing section and distribute detailed process：First treatment region
Interior includes the most strong first six digits cell (A, B, C, D, E, F) of related coefficient between co-frequency cell, it is assumed that fixed each cell distribution 3
Secondary PCI values are calculated, then PCI values (0~503) are divided into 168 groups, in first group PCI=(0,1,2) calculating work as PCI=0
When, the interference value A1 of A cells；It calculates as PCI=1, the interference value A2 of A cells；It calculates as PCI=2, the interference of A cells
Value A3 judges value minimum in A1, A2, A3 for which, it is assumed that A1 is minimum, then is 0 to A cells distribution PCI values, cycle pair
Remaining (B, C, D, E, F) cell carries out same treatment until completing the PCI values distribution of all cells in the first processing section, later
It uses the first processing section similar mode processing successively to all processing sections in the whole network again, realizes to the whole network cell PCI values
Distribution, it should be noted that the PCI values of each cell are unequal in the whole network.
S600：It records each PCI apportioning costs of cell, the interference value of each cell and the whole network in the whole network and interferes total value,
Form initial cell PCI programmes.
It is recorded to calculating acquisition data in step S500, forms initial cell PCI programmes.It is non-essential, it can
The interference value of the PCI apportioning costs of each cell, each cell and the whole network interference total value and ranking cells table to be associated
Record is integrated, so that operating personnel check.
S700：The cell for choosing interference value TOP n%, updates the PCI apportioning costs of the cell of selection, and it is dry to recalculate the whole network
Total value is disturbed, if the whole network interferes total value before the whole network interference total value is less than update in updated PCI programmes, before abandoning update
PCI programmes, form new cell PCI programmes.
The value of n% can be set according to the needs of actual conditions, such as can select that interference value TOP's 10% is small
Area redistributes the PCI values of this 10% cell, recalculates the whole network interference total value.It is noted that in re-allocation process
It should be noted that different PCI values are distributed different cells, need to prevent from occurring identical PCI values in the whole network to distribute to different community
Situation.If the whole network interferes total value before the whole network interferes total value to be more than update in updated PCI programmes, illustrate complete after updating
PCI planning is netted than the difference before update, retains the PC programmes before update at this time, when complete in updated PCI programmes
Net interference total value interferes total value less than the whole network before updating, and the whole network PCI plans that, than excellent before update, discarding is more after illustrating update
PCI programmes before new, form new cell PCI programmes.
S800：The interference value for calculating each cell of the whole network in new cell PCI programmes, according to each cell of the whole network
The descending sequence of interference value is ranked up the whole network cell, obtains area interference value sequencing table, calculates area interference value row
It is small between TOP m% and TOP 2m% in the interference total value T1 of the cell of TOP m% and area interference value sequencing table in sequence table
The interference total value T2 in area judges newer cell PCI planning if the absolute value of difference is less than predetermined threshold value T between T1 and T2
Scheme restrains.
It is assumed that the cell of TOP m% is cell 1-6 cells, then area interference value sequencing table in area interference value sequencing table
Cell between middle TOP m% and TOP 2m% is 7-12 cells, calculates the interference total value T1 of 1-6 cells and No. 7-12 small
The interference total value T2 in area judges newer cell PCI planning when the absolute value of difference between T1 and T2 is less than predetermined threshold value T
Scheme restrains.Threshold value T is preset, and technical staff can answer according to historical empirical data, experts database data and actually
It is set with scene.
S900：When newer cell PCI programmes restrain, according to newer cell PCI programmes to cell PCI
It is configured.
Cell PCI configuration methods of the present invention, comprehensive neighbour's measurement data and switch data analyze the tightness degree of minizone,
Related coefficient between acquisition co-frequency cell carries out repeated dispensing and interference value according to related coefficient between co-frequency cell to cell PCI values
It calculating, interference value result of calculation is accurate, repeatedly adjusts cell PCI apportioning costs later, forms a variety of different PCI programmes,
And calculate separately in different schemes the whole network and interfere total value, the update scheme for choosing interference total value minimum carries out convergence judgement, when sentencing
When restraining surely, cell PCI is configured according to newer cell PCI programmes, realizes rationally matching to cell PCI values
It sets.
The cell for choosing interference value TOP n% in one of the embodiments, updates PCI points of the cell of selection
With value, the whole network interference total value is recalculated, if the whole network is dry before the whole network interference total value is less than update in updated PCI programmes
Total value is disturbed, then abandons the PCI programmes before update, new cell PCI programmes is formed and also has step later：
The PCI values for verifying all cells in the whole network, when distributing identical PCI values situation there are two different communities, by it
In the PCI values of a cell add deduct 30；
The PCI values for recycling all cells in described verification the whole network, when there are two different communities to distribute identical PCI values situation
When, the PCI values of one of cell are added deduct 30 operation, until the whole network in all cells PCI values it is different.
PCI is the Physical Cell Identifier of LTE network, in order to ensure its uniqueness, is needed in new cell PCI programmes
Middle progress PCI value verifications illustrate that the distribution of PCI values is wrong when distributing identical PCI values situation there are two different communities, and by
It is only related with its mod3, mod6, mod30 in interference value, so mistaking when PCI values are assigned, select one of cell
PCI values add deduct 30, due to be likely to occur add deduct 30 after the cell PCI situations equal with other cells PCI values again, institute
To be operated before needing to be verified again, recycling, until the PCI values of all cells are different in the whole network.It should be pointed out that
When first time operation selection is " the PCI values of one of cell are added 30 " then also to need selection " by it in following cycle operation
In a cell PCI values add 30 " operation, vice versa.Again PCI values in the whole network are verified and is adjusted, avoided the occurrence of
Different community is distributed the case where identical PCI values, the more preferable configuration realized to the whole network cell PCI.
The reading service cell is switched to each co-frequency cell data in one of the embodiments, small according to servicing
Area is switched to single co-frequency cell data and serving cell is switched to all homogeneous frequency adjacent area data, obtains switch data tool
Body includes step：
Reading service cell is switched to each co-frequency cell number；
It is switched to each co-frequency cell number according to serving cell, analysis obtains serving cell and is switched to all co-frequency cells
Number；
Calculating serving cell is switched to single co-frequency cell number and is switched to all co-frequency cell numbers with serving cell
Ratio obtains switch data.
As shown in Fig. 2, step S300 specifically includes step in one of the embodiments,：
S320：Common-frequency cell signal interaural correlation coefficient CoRsi is obtained according to the adjacent measurement data, according to the switching
Data obtain switching proportion Hosi；
S340：Read the weights Kho of the weights Kco and switching proportion that preset co-frequency cell related coefficient, wherein Kho=
1-Kco；
S360：According to formula Cosi=CoRsi*Kco+Hosi*Kho, related coefficient between co-frequency cell is obtained, in formula,
Cosi related coefficients between co-frequency cell, CoRsi are common-frequency cell signal interaural correlation coefficient, and Hosi is switching proportion.
As the foregoing description, switch data can specifically be counted adjacent measurement data particular number, Hosi by CoRsi
Quantify, the weights Kco and Kho in weighted calculation can be according to acquisitions such as historical empirical data, expert datas, it should be noted that
Kho=1-Kco, when lacking CoRsi, Kco values are that 0, Kho values are 1, and when lacking Hosi, Kho values are 0, Kco values
It is 1.
It is described according to related coefficient between co-frequency cell in one of the embodiments, it is specific to calculate cell PCI interference values
For：
By formula KPCI=Cosi (M3R+M6R+M30R), cell PCI interference values are calculated, in formula, KPCI is cell PCI
Interference value, Cosi related coefficients between co-frequency cell, M3R are cell mod3 interference coefficients, and M6R is cell mod6 interference coefficients,
M30R is cell mod30 interference coefficients；
As mod (PCI1,3)=mod (PCI2,3), M3R values are 1, as mod (PCI1,6)=mod (PCI2,6),
M6R values are 0.8, and as mod (PCI1,30)=mod (PCI2,30), M30R values are 0.1.
As shown in figure 3, a kind of cell PCI configures system, including：
Adjacent measurement data acquisition module 100 for reading network foundation information, and according to the network foundation information, obtains
Take adjacent measurement data；
Switch data acquisition module 200 is switched to each co-frequency cell data for reading service cell, small according to servicing
Area is switched to single co-frequency cell data and serving cell is switched to all homogeneous frequency adjacent area data, obtains switch data；
Related coefficient acquisition module 300 between co-frequency cell, for being carried out to the adjacent measurement data and the switch data
Weighted calculation obtains related coefficient between co-frequency cell；
Ranking cells table acquisition module 400, for calculating in the whole network related coefficient between the co-frequency cell of all cells, and root
According to related coefficient between the co-frequency cell of cell from being ranked up successively to cell to weak sequence by force, ranking cells table is obtained；
PCI values choose module 500, for small dividing into multiple places by all in the whole network successively according to the ranking cells table
Section is managed, PCI value distribution is carried out to the cell in each processing section successively, wherein the cell in processing section carries out PCI values
Distribution is specially：Between individually handling in section the strongest cell of related coefficient co-frequency cell, it is randomly assigned different PCI values, root
According to related coefficient between co-frequency cell, calculate under different PCI values, the interference value of the strongest cell of related coefficient between co-frequency cell,
Corresponding PCI values, circular treatment when interference value is minimum value are chosen, until it is different to complete all cells in entire processing section
PCI values are chosen；
Initial plan scheme acquisition module 600, for recording PCI apportioning costs of each cell in the whole network, each cell
Interference value and the whole network interfere total value, form initial cell PCI programmes；
Update module 700, the cell for choosing interference value TOP n% update the PCI apportioning costs of the cell of selection, weight
The new the whole network that calculates interferes total value, if the whole network interferes total value before the whole network interference total value is less than update in updated PCI programmes,
The PCI programmes before update are then abandoned, new cell PCI programmes are formed；
Determination module 800 is restrained, the interference value for calculating each cell of the whole network in new cell PCI programmes is pressed
The whole network cell is ranked up according to the interference value of each cell of the whole network descending sequence, obtains area interference value sequencing table,
Calculate area interference value sequencing table in TOP m% cell interference total value T1 and area interference value sequencing table in TOP m% with
The interference total value T2 of cell between TOP 2m% judges more if the absolute value of difference is less than predetermined threshold value T between T1 and T2
New cell PCI programmes convergence；
Configuration module 900 is used for when newer cell PCI programmes restrain, according to the planning sides newer cell PCI
Case configures cell PCI.
Cell PCI of the present invention configures system, comprehensive neighbour's measurement data and switch data to analyze the tightness degree of minizone,
Related coefficient between acquisition co-frequency cell carries out repeated dispensing and interference value according to related coefficient between co-frequency cell to cell PCI values
It calculating, interference value result of calculation is accurate, repeatedly adjusts cell PCI apportioning costs later, forms a variety of different PCI programmes,
And calculate separately in different schemes the whole network and interfere total value, the update scheme for choosing interference total value minimum carries out convergence judgement, when sentencing
When restraining surely, cell PCI is configured according to newer cell PCI programmes, realizes rationally matching to cell PCI values
It sets.
The cell PCI configurations system further includes in one of the embodiments,：
Verify module, the PCI values for verifying all cells in the whole network, when there are two different communities to distribute identical PCI
When being worth situation, the PCI values of one of cell are added deduct 30；
Loop module, the PCI values for recycling all cells in described verification the whole network, when there are two different communities to distribute
When identical PCI values situation, the PCI values of one of cell are added deduct 30 operation, until the whole network in all cells PCI values
It is different.
The switch data acquisition module 200 specifically includes in one of the embodiments,：
Reading unit is switched to each co-frequency cell number for reading service cell；
First analytic unit, for being switched to each co-frequency cell number according to serving cell, analysis obtains serving cell
It is switched to all co-frequency cell numbers；
Ratio computing unit, for calculating, serving cell is switched to single co-frequency cell number and serving cell is switched to institute
There is the ratio of co-frequency cell number, obtains switch data.
As shown in figure 4, related coefficient acquisition module 300 specifically wraps between the co-frequency cell in one of the embodiments,
It includes：
Second analytic unit 320, for obtaining common-frequency cell signal interaural correlation coefficient according to the adjacent measurement data
CoRsi obtains switching proportion Hosi according to the switch data；
Preset value reading unit 340, the power of weights Kco and switching proportion for reading default co-frequency cell related coefficient
Value Kho, wherein Kho=1-Kco；
Related coefficient computing unit 360 between co-frequency cell, for according to Cosi=CoRsi*Kco+Hosi*Kho, obtaining same
Frequency minizone related coefficient, in formula, Cosi related coefficients between co-frequency cell, CoRsi is common-frequency cell signal intensity phase relation
Number, Hosi is switching proportion.
The computing module 400 is specifically used in one of the embodiments,：
By formula KPCI=Cosi (M3R+M6R+M30R), cell PCI interference values are calculated, in formula, KPCI is cell PCI
Interference value, Cosi related coefficients between co-frequency cell, M3R are cell mod3 interference coefficients, and M6R is cell mod6 interference coefficients,
M30R is cell mod30 interference coefficients；
As mod (PCI1,3)=mod (PCI2,3), M3R values are 1, as mod (PCI1,6)=mod (PCI2,6),
M6R values are 0.8, and as mod (PCI1,30)=mod (PCI2,30), M30R values are 0.1.
In order to further explain in detail the technical solution of cell PCI configuration methods and system of the present invention and its that brings have
Beneficial effect will be explained below using specific example.
In this embodiment, 3 continuous PCI individually are chosen comprising 6 cells, each cell in processing section
Value carries out interference value calculating.
Step 1：Comprehensive MR data and switch data, calculate related coefficient Cosi between co-frequency cell
Step 2：PCI is divided into 168 groups, every group of three PCI divide, (0,1,2), (3,4,5) ... is with such in order
It pushes away.It need to plan PCI tables, be created as a table arranged from big to small by related coefficient between co-frequency cell.
Step 3：One PCI group of distribution gives the strongest cell of co-frequency cell related coefficient (PCI=0,1,2).And it provides same
The first six strong cell table (A, B, C, D, E, F) of frequency cell related coefficient.
Step 4：Obtain cell measurement neighboring cell list, distribute A cells PCI groups, ensure its allocated PCI groups and
All no longer same PCI groups (can arbitrarily being distributed if all unallocated PCI in adjacent area) of PCI for measuring adjacent area (non-same station), will be same
3 PCI of PCI groups substitute into A, find out interference total value respectively, choose the use of interference value minimum.Wherein, A cells PCI=is added
0, then substitute into formula
In formula, KPCIAlwaysIt is that adjacent area number is calculated as 0 if not distributing PCI cells also to interfere total value, P, after adding up, asks
Go out total interference value, then is compared.All neighboring cell lists of A are obtained, all cells in the list is obtained and has distributed PCI, are avoided point
A cells are given with identical PCI.
Step 4：Most strong non-same station adjacent cell B, distributes non-mod3, mod6, mod30 interference value PCI in the first six strong cell,
So analogize and is assigned the first six strong cell PCI.
Step 5：Cell table before rescaning, the negated strongest N1 cells operation of A base station associations degree.If before this
Distribution is then skipped.So analogize, has traversed associated cell list.
Step 6：It verifies adjacent area and whether there is same PCI, if PCI is added 30 in the presence of if or subtracts 30.Then it verifies again.
Step 7：Calculate the whole network interference total value (the sum of the whole network area interference value) and single subdistrict interference value.It preserves initial
Interference value and its corresponding PCI programmes.
Step 8：Adjust TOP n% maximum interference value cells PCI.It often adjusts primary (n% cells), calculates primary interference
Value.If new departure the whole network interference value is less than previous sets of plan, retain, and continue to calculate with new departure, it is on the contrary then abandon, again
It calculates.
Step 9：Often set new departure is come out of the stove, and is both needed to verify adjacent area and be whether there is same PCI, if PCI is added 30 in the presence of if or is subtracted
30.Then it verifies again.Maximum value is 503, if plus after 30 be more than 503, subtract 30, otherwise always plus.
Step 10：If new departure can not substitute old scheme, on the basis of TOP n%, then increase n values (n=n+x), x
For can arrange parameter.To n>=50%, then terminator.
Step 11：Adjusted Option：Starting point is different, if the whole network m% cells have 150, just there is 150 starting points.Again
It calculates.Successive optimization 150 cells (being unit with region).Cluster often has been calculated and then retains a set of optimal case.
Step 12：Convergence：After m% cells have been calculated.Recalculate a m% cell, it is assumed that be for interference value
It is 150 maximum, summation.Comparison before several level cell collection, such as 150 area interference values of the ranking between 300 to 450 it
With.Difference T or so, then it is assumed that optimal case stops calculating.
Several embodiments of the invention above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Range.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of cell PCI configuration methods, which is characterized in that including step：
Network foundation information is read, and according to the network foundation information, obtains adjacent measurement data；
Reading service cell is switched to each co-frequency cell data, according to serving cell be switched to single co-frequency cell data and
Serving cell is switched to all homogeneous frequency adjacent area data, obtains switch data；
The adjacent measurement data and the switch data are weighted, related coefficient between co-frequency cell is obtained；
Related coefficient between the co-frequency cell of all cells is calculated in the whole network, and according to related coefficient between the co-frequency cell of cell from strong
Cell is ranked up successively to weak sequence, obtains ranking cells table；
According to the ranking cells table successively by the whole network it is all it is small divide into multiple processing sections, successively to each processing section
Interior cell carries out PCI value distribution, wherein the cell in processing section carries out the distribution of PCI values and is specially：To individually handling section
The strongest cell of related coefficient between interior co-frequency cell is randomly assigned different PCI values, according to related coefficient between co-frequency cell, calculates
Under different PCI values, the interference value of the strongest cell of related coefficient between co-frequency cell is chosen corresponding when interference value is minimum value
PCI values, circular treatment are chosen until completing the PCI values that all cells are different in entire processing section；
It records each PCI apportioning costs of cell, the interference value of each cell and the whole network in the whole network and interferes total value, formed initial small
Area's PCI programmes；
The cell for choosing interference value TOP n%, updates the PCI apportioning costs of the cell of selection, recalculates the whole network interference total value, if
The whole network interferes total value before the whole network interference total value is less than update in updated PCI programmes, then abandons the PCI planning before update
Scheme forms new cell PCI programmes；
The interference value for calculating each cell of the whole network in new cell PCI programmes, according to each cell of the whole network interference value by
Small sequence is arrived greatly to be ranked up the whole network cell, obtains area interference value sequencing table, calculates TOP in area interference value sequencing table
The interference of cell in the interference total value T1 and area interference value sequencing table of the cell of m% between TOP m% and TOP 2m% is total
Value T2 judges newer cell PCI programmes convergence if the absolute value of difference is less than predetermined threshold value T between T1 and T2；
When newer cell PCI programmes restrain, cell PCI is configured according to newer cell PCI programmes.
2. cell PCI configuration methods according to claim 1, which is characterized in that described to choose the small of interference value TOP n%
Area updates the PCI apportioning costs of the cell of selection, the whole network interference total value is recalculated, if the whole network in updated PCI programmes
The whole network interferes total value before interfering total value to be less than update, then abandons the PCI programmes before update, forms new cell PCI planning
There is step after scheme：
The PCI values for verifying all cells in the whole network will wherein one when there is two different communities identical PCI values situation of distribution
The PCI values of a cell add deduct 30；
The PCI values for recycling all cells in described verification the whole network, when distributing identical PCI values situation there are two different communities,
The PCI values of one of cell are added deduct 30 operation, until the whole network in all cells PCI values it is different.
3. cell PCI configuration methods according to claim 1 or 2, which is characterized in that the reading service cell is switched to
Each co-frequency cell data are switched to single co-frequency cell data according to serving cell and serving cell are switched to all same frequencies
Neighboring community's data obtain switch data and specifically include step：
Reading service cell is switched to each co-frequency cell number；
It is switched to each co-frequency cell number according to serving cell, analysis obtains serving cell and is switched to all co-frequency cells time
Number；
Calculating serving cell is switched to single co-frequency cell number and serving cell is switched to the ratio of all co-frequency cell numbers,
Obtain switch data.
4. cell PCI configuration methods according to claim 1 or 2, which is characterized in that it is described to the adjacent measurement data and
The switch data is weighted, and related coefficient specifically includes step between obtaining co-frequency cell：
Common-frequency cell signal interaural correlation coefficient CoRsi is obtained according to the adjacent measurement data, is obtained according to the switch data
Switching proportion Hosi；
Read the weights Kho of the weights Kco and switching proportion that preset co-frequency cell related coefficient, wherein Kho=1-Kco；
According to formula Cosi=CoRsi*Kco+Hosi*Kho, related coefficient between co-frequency cell is obtained, in formula, Cosi is small with frequency
Section related coefficient, CoRsi are common-frequency cell signal interaural correlation coefficient, and Hosi is switching proportion.
5. cell PCI configuration methods according to claim 1 or 2, which is characterized in that described according to related between co-frequency cell
Coefficient, the interference value calculated in the different PCI values similarly hereinafter strongest cell of frequency minizone related coefficient specifically include step：
By formula KPCI=Cosi (M3R+M6R+M30R), cell PCI interference values are calculated, in formula, KPCI is cell PCI interference
Value, Cosi related coefficients between co-frequency cell, M3R are cell mod3 interference coefficients, and M6R is cell mod6 interference coefficients, M30R
For cell mod30 interference coefficients；
As mod (PCI1,3)=mod (PCI2,3), M3R values are 1, as mod (PCI1,6)=mod (PCI2,6), M6R
Value is 0.8, and as mod (PCI1,30)=mod (PCI2,30), M30R values are 0.1.
6. a kind of cell PCI configures system, which is characterized in that including：
Adjacent measurement data acquisition module for reading network foundation information, and according to the network foundation information, obtains adjacent measure
Data；
Switch data acquisition module is switched to each co-frequency cell data for reading service cell, is switched according to serving cell
All homogeneous frequency adjacent area data are switched to single co-frequency cell data and serving cell, obtain switch data；
Related coefficient acquisition module between co-frequency cell, based on being weighted to the adjacent measurement data and the switch data
It calculates, obtains related coefficient between co-frequency cell；
Ranking cells table acquisition module, for calculating in the whole network related coefficient between the co-frequency cell of all cells, and according to cell
Co-frequency cell between related coefficient from being ranked up successively to cell to weak sequence by force, obtain ranking cells table；
PCI values choose module, for according to the ranking cells table successively by the whole network it is all it is small divide into multiple processing sections,
PCI value distribution is carried out to the cell in each processing section successively, wherein the cell in processing section carries out PCI values distribution tool
Body is：Between individually handling in section the strongest cell of related coefficient co-frequency cell, different PCI values are randomly assigned, according to same frequency
Minizone related coefficient calculates under different PCI values, the interference value of the strongest cell of related coefficient between co-frequency cell, chooses dry
Corresponding PCI values, circular treatment when value is minimum value are disturbed, until completing the PCI values that all cells are different in entire processing section
It chooses；
Initial plan scheme acquisition module, for record the interference value of the PCI apportioning costs of each cell in the whole network, each cell with
And the whole network interferes total value, forms initial cell PCI programmes；
Update module, the cell for choosing interference value TOP n% update the PCI apportioning costs of the cell of selection, recalculate complete
Net interference total value abandons more if the whole network interferes total value before the whole network interference total value is less than update in updated PCI programmes
PCI programmes before new, form new cell PCI programmes；
Determination module is restrained, the interference value for calculating each cell of the whole network in new cell PCI programmes is every according to the whole network
The sequence that the interference value of a cell is descending is ranked up the whole network cell, obtains area interference value sequencing table, calculates cell
TOP m% and TOP 2m% in the interference total value T1 of the cell of TOP m% and area interference value sequencing table in interference value sequencing table
Between cell interference total value T2, if between T1 and T2 difference absolute value be less than predetermined threshold value T, judge newer cell
PCI programmes restrain；
Configuration module is used for when newer cell PCI programmes restrain, according to newer cell PCI programmes to small
Area PCI is configured.
7. cell PCI according to claim 6 configures system, which is characterized in that further include：
Verify module, the PCI values for verifying all cells in the whole network, when there are two different communities to distribute identical PCI values feelings
When condition, the PCI values of one of cell are added deduct 30；
Loop module, the PCI values for recycling all cells in described verification the whole network, when there are two different community distribution are identical
When PCI value situations, the PCI values of one of cell are added deduct 30 operation, until the whole network in all cells PCI values not
Together.
8. the cell PCI described according to claim 6 or 7 configures system, which is characterized in that the switch data acquisition module tool
Body includes：
Reading unit is switched to each co-frequency cell number for reading service cell；
First analytic unit, for being switched to each co-frequency cell number according to serving cell, analysis obtains serving cell switching
To all co-frequency cell numbers；
Ratio computing unit, for calculate serving cell be switched to single co-frequency cell number and serving cell be switched to it is all same
The ratio of frequency cell number obtains switch data.
9. the cell PCI described according to claim 6 or 7 configures system, which is characterized in that related coefficient between the co-frequency cell
Acquisition module specifically includes：
Second analytic unit, for obtaining common-frequency cell signal interaural correlation coefficient CoRsi according to the adjacent measurement data, according to
The switch data obtains switching proportion Hosi；
Preset value reading unit, the weights Kho of weights Kco and switching proportion for reading default co-frequency cell related coefficient,
Wherein, Kho=1-Kco；
Related coefficient computing unit between co-frequency cell, for according to formula Cosi=CoRsi*Kco+Hosi*Kho, obtaining with frequency
Minizone related coefficient, in formula, Cosi related coefficients between co-frequency cell, CoRsi is common-frequency cell signal interaural correlation coefficient,
Hosi is switching proportion.
10. the cell PCI described according to claim 6 or 7 configures system, which is characterized in that the PCI values choose module according to
Related coefficient between co-frequency cell, the interference value calculated in the different PCI values similarly hereinafter strongest cell of frequency minizone related coefficient are specific
For：
By formula KPCI=Cosi (M3R+M6R+M30R), cell PCI interference values are calculated, in formula, KPCI is cell PCI interference
Value, Cosi related coefficients between co-frequency cell, M3R are cell mod3 interference coefficients, and M6R is cell mod6 interference coefficients, M30R
For cell mod30 interference coefficients；
As mod (PCI1,3)=mod (PCI2,3), M3R values are 1, as mod (PCI1,6)=mod (PCI2,6), M6R
Value is 0.8, and as mod (PCI1,30)=mod (PCI2,30), M30R values are 0.1.
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| CN106211209B (en) * | 2016-06-27 | 2019-08-23 | 广东海格怡创科技有限公司 | The method and apparatus for obtaining the total interference value of PCI based on co-frequency cell related coefficient |
| CN105933916B (en) * | 2016-06-27 | 2019-08-23 | 广东海格怡创科技有限公司 | Detection ratio method and apparatus in co-frequency cell are obtained based on MR in LTE network |
| EP3425952B1 (en) * | 2017-07-07 | 2020-02-19 | British Telecommunications public limited company | Cellular telecommunications network |
| CN113973311B (en) * | 2020-07-22 | 2023-04-18 | 大唐移动通信设备有限公司 | PCI planning method and device |
| CN113645611B (en) * | 2021-10-18 | 2022-02-08 | 中通服建设有限公司 | Ternary constrained 5G PCI planning method and device and storage medium |
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