CN105338533B - A kind of inter-cell interference coordination method and device - Google Patents
A kind of inter-cell interference coordination method and device Download PDFInfo
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- CN105338533B CN105338533B CN201410397279.1A CN201410397279A CN105338533B CN 105338533 B CN105338533 B CN 105338533B CN 201410397279 A CN201410397279 A CN 201410397279A CN 105338533 B CN105338533 B CN 105338533B
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Abstract
The invention discloses a kind of inter-cell interference coordination method and devices.Its method includes: to be grouped the cell of each base station, wherein the cell of mutual interference within the allowable range is divided into one group；Respectively each group cell shares out the work frequency range, wherein identical with the group center frequency point of cell institute assignment frequency range, the center frequency points of difference group cell institute assignment frequency ranges are different.Technical solution provided in an embodiment of the present invention, concentrating reduces minizone interface load compared with the distributed coordination mode of ICIC to the cell progress interference coordination of each base station.Interference coordination is carried out to the cell of each base station in addition, concentrating, first the cell of each base station is grouped, so that the cell that inter-cell interference is more than allowed band is in different groups, different center frequency points is distributed, to effectively reduce interference, ensure that interference coordination effect.
Description
Technical field
The present invention relates to wireless communication technology field more particularly to a kind of inter-cell interference coordination methods and device.
Background technique
In a wireless communication system, signal is propagated by wireless environment, under more base station deployments, if adjacent base station uses phase
Same working frequency, in most systems, such as orthogonal frequency division multiplexing (Orthogonal Frequency Division
Multiplexing, OFDM) system, in CDMA (Code Division Multiple Access, CDMA) system, meeting
Neighbor cell interference is caused, to cause frequency spectrum resource that cannot be efficiently used, reduces wireless system transmission performance.
For using long term evolution (Long Term Evolution, LTE) system of OFDM technology.In LTE system,
Base station is that the running time-frequency resource of terminal distribution different sub-carrier carries out the transmission of business datum signal, and terminal room does not interfere in cell.
But if different community, using identical frequency resource, it will cause inter-cell interference between neighboring community.
As mobile communication is more more and more universal, cope with business demand, wireless communication system while dense deployment cell,
Inter-cell interference must also be minimized, to guarantee system performance.
Interference coordination technique in current LTE system has inter-cell interference cancellation (Inter-cell Interference
Coordination, ICIC) technology.ICIC technology refers to load instruction and high level cadre by carrying out neighboring community between adjacent base station
Instruction information exchange is disturbed, minizone carries out interference coordination by the way of distributed coordination under base station.The mode of interference coordination can
With are as follows: if 1 load of cell is high, serious interference, the cell whole resource of frequency range is can be used in the central user of adjacent cell 2, is reduced
Edge customer resource allocation or edge customer only use part resource, to guarantee the signal transmission of 1 user of cell.
Current emulation and application all show that ICIC technology is not for the effect of Inter-Cell Interference Coordination, raising power system capacity
Very well.
Problem of inter-cell interference is than macro net deployment scenario under dense deployment cell scenario (hereinafter referred to as dense deployment scene)
Under it is more prominent and serious, since cell is intensive, the number of cells that Inter-Cell Interference Coordination is related to is more, passes through distributed signaling
Interaction, signalling demand is big, causes minizone interface load overweight, and more due to involving node, and distributed interference coordination is calculated
The effect is relatively poor for method.
In addition, ICIC master is to solve the interference problem of minizone under identical networking, the center of cell under identical networking
Frequency point and bandwidth are relatively-stationary.Under dense deployment scene, cell operation in high band, working frequency range that base station allows compared with
Width can not solve the problem of inter-cell interference under dense deployment scene using ICIC technology with flexible utilization frequency resource.
Summary of the invention
The object of the present invention is to provide a kind of inter-cell interference coordination method and devices, to solve ICIC interference coordination effect
The problem of difference.
The purpose of the present invention is what is be achieved through the following technical solutions:
A kind of inter-cell interference coordination method, comprising:
The cell of each base station is grouped, wherein the cell of mutual interference within the allowable range is divided into one
Group；
Respectively each group cell shares out the work frequency range, wherein with the center frequency point phase of group cell institute assignment frequency range
Together, the center frequency point of different group cell institute assignment frequency ranges is different.
Preferably, identical with group cell institute's assignment frequency range.
Based on above-mentioned any means embodiment, preferably, the cell of each base station is grouped, comprising:
Determine the maximum cell of the interference being subject in the cell of each base station, and by the maximum cell of the interference being subject to
A group is added；
It is found in ungrouped cell and maximum cell is interfered to non-empty group, and the cell found is added one
Empty group, until all groups have cell addition；Interference to non-empty group is the sum of the interference to each cell in the non-empty group；
Ungrouped each cell is separately added into and is interfered in the smallest group by it.
Preferably, the maximum cell of interference being subject in the cell of determining each base station, comprising:
Determine the interference adjacent area of the cell of each base station；
The cell for calculating each base station is interfered the interference of adjacent area；
According to the interference for the adjacent area that is interfered, the maximum cell of interference being subject to is determined from the cell of each base station.
Preferably, the maximum cell of interference being subject in the cell of determining each base station, comprising:
Calculate interference of the cell by other cells of each base station；
According to the interference by other cells, the maximum cell of interference being subject to is determined from the cell of each base station.
Maximum cell is interfered to non-empty group preferably, finding in ungrouped cell, comprising:
Determine the interference adjacent area of the cell of each base station；
Calculate interference of the ungrouped cell to the interference adjacent area in non-empty group；
It is found in ungrouped cell according to calculated result and maximum cell is interfered to non-empty group.
Maximum cell is interfered to non-empty group preferably, finding in ungrouped cell, comprising:
Calculate interference of the ungrouped cell to the cell in non-empty group；
It is searched in ungrouped cell according to calculated result and maximum cell is interfered to non-empty group.
It is interfered in the smallest group preferably, being separately added into ungrouped each cell by it, comprising:
One, which is determined, respectively for each group interferes it maximum ungrouped cell；
To wherein interfere maximum cell to be added and be interfered the smallest target group by it, the target group of cell for not comprising with institute
State the group that cell belongs to same base station；
It repeats the above steps until will be in all ungrouped cell addition groups.
It is interfered in the smallest group preferably, being separately added into ungrouped each cell by it, comprising:
One, which is determined, respectively for each group interferes it maximum ungrouped cell；
Determining cell is added respectively and is interfered the smallest target group by it, the target group of cell be not comprising with it is described small
Area belongs to the group of same base station；
It repeats the above steps until will be in all ungrouped cell addition groups.
Based on above-mentioned any means embodiment, preferably, when having new cell, this method further include:
Calculate interference of the new cell to each group；
The new cell is added and is interfered in the smallest target group by it, the target group of cell be not comprising with it is described small
Area belongs to the group of same base station；
It shares out the work frequency range for the new cell, the working frequency range and other in the new cell group be added are small
The center frequency point in area is identical.
Based on above-mentioned any means embodiment, preferably, when thering is cell closing or load to reduce, this method further include:
It is searched respectively in each group and is organized the interior maximum cell of interference；
Successively determine the smallest target group of interference by the cell found, the target group of cell be not comprising with it is described
Cell belongs to the group of same base station, until the interference for having the cell found to be subject in determining target group is less than in former group
The cell found is adjusted to determining target group by the interference being subject to；
The working frequency range of the cell found described in adjustment, the center frequency point of the working frequency range with it is described find it is small
The center frequency point of other cells is identical in the group that area is adjusted to.
Preferably, the set-up procedure of above-mentioned cell grouping is repeated, until the cell number for being grouped adjustment reaches predetermined value.
Based on inventive concept same as method, the embodiment of the present invention also provides a kind of Inter-Cell Interference Coordination device, packet
It includes:
Cell grouping module, for the cell of each base station to be grouped, wherein mutual interference is in allowed band
Interior cell is divided into one group；
Working frequency range distribution module, for being respectively that each group cell shares out the work frequency range, wherein distributed with group cell
The center frequency point of working frequency range is identical, and the center frequency point of difference group cell institute assignment frequency range is different.
Preferably, identical with group cell institute's assignment frequency range.
Based on above-mentioned any device embodiment, preferably, the cell grouping module is specifically used for:
Determine the maximum cell of the interference being subject in the cell of each base station, and by the maximum cell of the interference being subject to
A group is added；
It is found in ungrouped cell and maximum cell is interfered to non-empty group, and the cell found is added one
Empty group, until all groups have cell addition；Interference to non-empty group is the sum of the interference to each cell in the non-empty group；
Ungrouped each cell is separately added into and is interfered in the smallest group by it.
Preferably, when determining the maximum cell of the interference being subject in the cell of each base station, the cell grouping module tool
Body is used for:
Determine the interference adjacent area of the cell of each base station；
The cell for calculating each base station is interfered the interference of adjacent area；
According to the interference for the adjacent area that is interfered, the maximum cell of interference being subject to is determined from the cell of each base station.
Preferably, when determining the maximum cell of the interference being subject in the cell of each base station, the cell grouping module tool
Body is used for:
Calculate interference of the cell by other cells of each base station；
According to the interference by other cells, the maximum cell of interference being subject to is determined from the cell of each base station.
Preferably, the cell is grouped mould when found in ungrouped cell to non-empty group interference maximum cell
Block is specifically used for:
Determine the interference adjacent area of the cell of each base station；
Calculate interference of the ungrouped cell to the interference adjacent area in non-empty group；
It is found in ungrouped cell according to calculated result and maximum cell is interfered to non-empty group.
Preferably, the cell is grouped mould when found in ungrouped cell to non-empty group interference maximum cell
Block is specifically used for:
Calculate interference of the ungrouped cell to the cell in non-empty group；
It is searched in ungrouped cell according to calculated result and maximum cell is interfered to non-empty group.
Preferably, the cell is grouped mould when ungrouped each cell is separately added by its smallest group of interference
Block is specifically used for:
One, which is determined, respectively for each group interferes it maximum ungrouped cell；
To wherein interfere maximum cell to be added and be interfered the smallest target group by it, the target group of cell for not comprising with institute
State the group that cell belongs to same base station；
It repeats the above steps until will be in all ungrouped cell addition groups.
Preferably, the cell is grouped mould when ungrouped each cell is separately added by its smallest group of interference
Block is specifically used for:
One, which is determined, respectively for each group interferes it maximum ungrouped cell；
Determining cell is added respectively and is interfered the smallest target group by it, the target group of cell be not comprising with it is described small
Area belongs to the group of same base station；
It repeats the above steps until will be in all ungrouped cell addition groups.
Based on above-mentioned any device embodiment, preferably, when having new cell:
The cell grouping module is also used to, and calculates interference of the new cell to each group；By the new cell
It is added and is interfered in the smallest target group by it, the target group of cell is not comprising the group for belonging to same base station with the cell；
The working frequency range distribution module is also used to, and is shared out the work frequency range for the new cell, the working frequency range with
The center frequency point of other cells is identical in the new cell group be added.
Based on above-mentioned any device embodiment, preferably, when thering is cell closing or load to reduce:
The cell grouping module is also used to, and is searched respectively in each group and is organized the interior maximum cell of interference；Successively really
The fixed the smallest target group of interference by the cell found, the target group of cell are not comprising belonging to same base with the cell
The group stood, until the interference for having the cell found to be subject in determining target group is less than the interference being subject in former group, it will
The cell found is adjusted to determining target group；
The working frequency range distribution module is also used to, the working frequency range of the cell found described in adjustment, the work frequency
The center frequency point of section is identical as the center frequency point of other cells in the group that the cell found is adjusted to.
Preferably, the set-up procedure of above-mentioned cell grouping and working frequency range is repeated, until being grouped the cell number of adjustment
Reach predetermined value.
Based on inventive concept same as method, the embodiment of the present invention also provides a kind of base station, comprising:
Processor, the processor are configured as executing the computer program for having following function: by the cell of each base station
It is grouped, wherein the cell of mutual interference within the allowable range is divided into one group；Respectively each group cell shares out the work
Frequency range, wherein it is identical with the group center frequency point of cell institute assignment frequency range, difference group cell institute assignment frequency range
Center frequency point is different；
Memory, the memory are configured as saving the code of above-mentioned computer program.
Preferably, identical with group cell institute's assignment frequency range.
Based on above-mentioned any base station embodiment, preferably, processor is additionally configured to execute the calculating for having following function
Loom program: the maximum cell of the interference being subject in the cell of each base station is determined, and the interference being subject to is maximum small
A group is added in area；It is found in ungrouped cell and maximum cell is interfered to non-empty group, and the cell found is added
Enter an empty group, until all groups have cell addition；Interference to non-empty group is to do to each cell in the non-empty group
The sum of disturb；Ungrouped each cell is separately added into and is interfered in the smallest group by it.Memory is additionally configured to save above-mentioned
The code of computer subprogram.
Preferably, processor is additionally configured to execute the computer subprogram for having following function: determining each base station
The interference adjacent area of cell；The cell for calculating each base station is interfered the interference of adjacent area；According to the interference for the adjacent area that is interfered, from
The maximum cell of interference being subject to is determined in the cell of each base station.Memory is additionally configured to save above-mentioned computer subprogram
Code.
Preferably, processor is additionally configured to execute the computer subprogram for having following function: calculating each base station
Interference of the cell by other cells；According to the interference by other cells, determine that is be subject to does from the cell of each base station
Disturb maximum cell.Memory is additionally configured to save the code of above-mentioned computer subprogram.
Preferably, processor is additionally configured to execute the computer subprogram for having following function: determining each base station
The interference adjacent area of cell；Calculate interference of the ungrouped cell to the interference adjacent area in non-empty group；Do not divided according to calculated result
It is found in the cell of group and maximum cell is interfered to non-empty group.Memory is additionally configured to save above-mentioned computer subprogram
Code.
Preferably, processor is additionally configured to execute the computer subprogram for having following function: calculating ungrouped small
Interference of the area to the cell in non-empty group；It is searched in ungrouped cell according to calculated result maximum small to the interference of non-empty group
Area.Memory is additionally configured to save the code of above-mentioned computer subprogram.
Preferably, processor is additionally configured to execute the computer subprogram for having following function: true for each group of difference
Fixed one is interfered it maximum ungrouped cell；It will wherein interfere maximum cell to be added and be interfered the smallest target by it
Group, the target group of cell are not comprising the group for belonging to same base station with the cell；It repeats the above steps until not dividing all
In the cell addition group of group.Memory is additionally configured to save the code of above-mentioned computer subprogram.
Preferably, processor is additionally configured to execute the computer subprogram for having following function: true for each group of difference
Fixed one is interfered it maximum ungrouped cell；Determining cell is added respectively and is interfered the smallest target group by it, it is small
The target group in area is not comprising the group for belonging to same base station with the cell；It repeats the above steps until will be all ungrouped small
In area's addition group.Memory is additionally configured to save the code of above-mentioned computer subprogram.
Based on above-mentioned any base station embodiment, preferably, processor is additionally configured to execute the calculating for having following function
Machine program: when having new cell, interference of the new cell to each group is calculated；The new cell is added and is interfered by it
In the smallest target group, the target group of cell is not comprising the group for belonging to same base station with the cell；For the new cell
Share out the work frequency range, and the working frequency range is identical as the center frequency point of other cells in the new cell group be added.Storage
Device is additionally configured to save the code of above-mentioned computer program.
Based on above-mentioned any base station embodiment, preferably, processor is additionally configured to execute the calculating for having following function
When machine program: having cell to close or load reduces, is searched respectively in each group and organized the interior maximum cell of interference；Successively really
The fixed the smallest target group of interference by the cell found, the target group of cell are not comprising belonging to same base with the cell
The group stood, until the interference for having the cell found to be subject in determining target group is less than the interference being subject in former group, it will
The cell found is adjusted to determining target group；The working frequency range of the cell found described in adjustment, the work frequency
The center frequency point of section is identical as the center frequency point of other cells in the group that the cell found is adjusted to.Memory is also matched
It is set to the code for saving above-mentioned computer program.
Preferably, the set-up procedure of above-mentioned cell grouping and working frequency range is repeated, until being grouped the cell number of adjustment
Reach predetermined value.
Technical solution provided in an embodiment of the present invention is concentrated and carries out interference coordination to the cell of each base station, compared with ICIC points
The coordination mode of cloth reduces minizone interface load.Interference coordination is carried out to the cell of each base station in addition, concentrating, it is first right
The cell of each base station is grouped, so that the cell that inter-cell interference is more than allowed band is in different groups, is distributed different
Center frequency point improves radio transmission performance to effectively reduce interference, to improve power system capacity, guarantees interference coordination effect
Fruit.
Detailed description of the invention
Fig. 1 is inter-cell interference coordination method flow chart provided in an embodiment of the present invention；
Fig. 2 is schematic device provided in an embodiment of the present invention；
Fig. 3 is base station schematic diagram provided in an embodiment of the present invention.
Specific embodiment
Before technical solution provided by the invention is described by specific embodiment, first to the embodiment of the present invention
In some technical characteristics for being related to be explained.
Centralized node, a centralized node can control multiple base stations.Centralized node can be logic entity, be also possible to solely
Vertical equipment.For example, it may be the equipments of the core network such as standalone gateway (GW), are also possible to that the soft of the equipments of the core network such as GW is arranged in
Part or hardware module, can be core net node, can be Operations, Administration and Maintenance (Operation Administration
And Maintenance, OAM) node, it is also possible to that the software or hardware module of OAM node is arranged in, can be base station,
It can be the software or hardware module that base station is set.One centralized node can control multiple base stations.
Base station, in the embodiment of the present invention, base station refers to small station, micro- such as low power nodes (Low Power Node, LPN)
Micro-base station (pico), Home eNodeB (femto), access point (Access Point, AP) etc..There is one or more under one base station
A cell under dense deployment scene, has a cell, alternatively referred to as cell under a usual base station.
Cell, if base station (small station) works in a center frequency point, which is divided into a cell,
Working frequency points, that is, base station working frequency points (center frequency point) of the cell.If base station operation is at two or more centers
On frequency point, then, which is divided into two or more cells, and the quantity of cell is the working frequency points number of base station
Amount, the working frequency points of each cell are a working frequency points of base station.
Adjacent area interference relationships table, adjacent area interference relationships table are based on cell maintenance, refer to for each cell, need unified with it
Coordinated one group of cell to avoid interference.It is considered that the cell other than the interference relationships table of adjacent area the cell is not caused it is small
Section interference, can be without interference coordination.
The practical frequency range that can be used of the working frequency range of permission, i.e. base station, it is related with the capacity of equipment of base station and operator,
For some or all of authorized spectrum band.
Below in conjunction with attached drawing, technical solution provided in an embodiment of the present invention is described in detail.
Inter-cell interference coordination method provided in an embodiment of the present invention is as shown in Figure 1, specifically include following operation:
The cell of each base station is grouped by step 100, wherein the cell of mutual interference within the allowable range
It is divided into one group.
Interference between each cell under same base station is maximum, needs these small differentiations in different groups, therefore, point
Group number should be greater than the maximum value of the number of cells under each base station.
In the embodiment of the present invention, one group is alternatively referred to as cluster.
In the embodiment of the present invention, each base station refers to each base station concentrated and carry out Inter-Cell Interference Coordination.
Step 110 is respectively that each group cell shares out the work frequency range, wherein in group cell institute assignment frequency range
Heart frequency point is identical, and the center frequency point of difference group cell institute assignment frequency range is different.
Method provided in an embodiment of the present invention can with but be not limited only to realize in centralized node.
Technical solution provided in an embodiment of the present invention is concentrated and carries out interference coordination to the cell of each base station, compared with ICIC points
The coordination mode of cloth reduces minizone interface load.Interference coordination is carried out to the cell of each base station in addition, concentrating, it is first right
The cell of each base station is grouped, so that the cell that inter-cell interference is more than allowed band is in different groups, is distributed different
Center frequency point improves radio transmission performance to effectively reduce interference, to improve power system capacity, guarantees interference coordination effect
Fruit.
In the embodiment of the present invention, it can be the same or different with cell institute assignment frequency range is organized.For convenient for distribution
And management, preferably, i.e., center frequency point phase with each cell not only working frequency range of group identical with the group working frequency range of cell
Together, and the bandwidth of working frequency range is also identical.
In the embodiment of the present invention, the allowed band of above-mentioned inter-cell interference both can be by specific interference threshold come boundary
It is fixed, it can also be bound by other means.Concrete example is illustrated to the implementation of step 100 below.
Preferably, the implementation of above-mentioned steps 100 are as follows:
It determines the maximum cell of the interference being subject in the cell of each base station, and the maximum cell of the interference being subject to is added
Enter an empty group；It is found in ungrouped cell and maximum cell is interfered to non-empty group, and the cell found is added
One empty group, until all groups have cell addition；Ungrouped each cell is separately added into and is interfered in the smallest group by it.
Wherein, refer to that there are no cells, and the group is added for empty group, non-empty group refers at least one cell in the group.
It wherein, is the sum of the interference to each cell in the non-empty group to the interference of a non-empty group.If two cells
Adjacent area is not interfered each other, then it is believed that there is no interference between the two cells, therefore, to respectively interfering adjacent area in a non-empty group
The sum of interference be regarded as the sum of the interference to each cell in the non-empty group.
Wherein, if there is two or more non-empty groups, maximum cell is interfered to non-empty group, is by comparing small
Area determines the interference maximum value of each non-empty group.
In above-mentioned treatment process, if there is N number of group, then find first it is N number of interfere maximum cell each other, be divided into respectively
This N number of group.To remaining ungrouped cell, it is divided into is interfered the smallest group by it respectively.That is, will interfere each other as far as possible
Biggish cell is divided into different groups, and lesser cell will be interfered to be divided into identical group each other.In the embodiment of the present invention, it is believed that
In the group result obtained according to above-mentioned treatment process, with the minizone in group interference within the allowable range.
Above-mentioned treatment process is illustrated with specific example below.Assuming that the packet count determined is N, it is denoted as C respectively1~
Cn, central controlled each base station shares M cell (Cell1~CellM)。
The maximum cell of inter-cell interference being subject to is determined first from M cell, it is assumed that be Cell1, and by Cell1Add
Enter an empty group, such as C1。
Then from ungrouped cell Cell2~CellMMiddle lookup is to C1Interfere maximum cell, it is assumed that be Cell2, then
By Cell2An empty group, such as C is added2；Continue in ungrouped cell Cell3~CellMIn, calculate separately these cells pair
The interference of each non-empty group, and determine that these cells to the interference maximum value of each non-empty group, compare these cells to each respectively
The interference maximum value of a non-empty group interferes maximum cell to non-empty group to determine, it is assumed that is Cell3, by Cell3A sky is added
Group, such as C3；Until N number of group has cell addition.
It is interfered in the smallest group finally, being separately added into ungrouped each cell by it.
In above-mentioned treatment process, it is more to determine that the implementation for the maximum cell of interference being subject in the cell of each base station has
Kind, it is only exemplified by below wherein several.
Implementation A1:
Determine the interference adjacent area of the cell of each base station；The cell for calculating each base station is interfered the interference of adjacent area；Root
According to the interference for the adjacent area that is interfered, the maximum cell of interference being subject to is determined from the cell of each base station.
Wherein it is possible to predefine interference neighboring cell list, each base station then is determined by searching for interference neighboring cell list
The interference adjacent area of cell.Adjacent area interference relationships list establish mode can with but not only include the following two kinds:
The first, is established by way of nearby region measurement.Specifically, centralized node measures configuration to each base station,
Threshold value (such as TH_RSRP) including measurement frequency point and measurement amount；Each base station carries out nearby region measurement according to measuring configuration respectively,
The adjacent cell of storage is identified to measured value (such as RSRP survey of the measurement amount of (such as PCI, ECGI) and the adjacent cell greater than TH_RSRP
Magnitude) it reports；Adjacent cell PCI, the RSRP measured value that centralized node is reported according to base station measurement is that the cell under base station establishes neighbour
Area's interference relationships table, the such as larger than adjacent cell of TH_RSRP are interference adjacent areas, are not otherwise interference adjacent areas.
It second, is established in such a way that path loss calculates.Specifically, base station deployment initial stage, by way of on-the-spot test
The circuit loss value between base station is obtained, and is stored in centralized node；The interference calculation value between base station is calculated in centralized node, such as interferes
Power=base station transmission power is received multiplied by the circuit loss value between base station；Centralized node receives power according to the interference between base station,
Adjacent area interference relationships table is established for the cell under base station, the such as larger than cell under the base station of pre-determined threshold is interference adjacent area, otherwise
It is not interference adjacent area.
Wherein it is possible to calculate the interference that cell is subject to by following formula:
Wherein, I (Celli) it is cell i (Celli) interference that is subject to, it is here the interference of adjacent area of being interfered；
IiFor CelliInterference adjacent area set in the interference relationships table of adjacent area；
wj,iFor CelljTo CelliInterference value, can be the measured value of measurement amount, be also possible to interference calculation value,
CelljFor CelliInterference adjacent area in the interference relationships table of adjacent area.
Implementation A2:
Calculate interference of the cell by other cells of each base station；According to the interference by other cells, from each base
The maximum cell of interference being subject to is determined in the cell stood.
Wherein, other cells refer to other cells in the cell of each base station other than this cell.
Wherein it is possible to calculate the interference that cell is subject to by following formula:
Wherein, I (Celli) it is CelliThe interference being subject to, the interference for other cells being subject to here；Φ is each base station
Under set of cells.
In above-mentioned treatment process, the implementation that maximum cell is interfered non-empty group is found in ungrouped cell
There are many, it is only exemplified by below wherein several.
Implementation B1:
Determine the interference adjacent area of the cell of each base station；Ungrouped cell is calculated to the dry of the interference adjacent area in non-empty group
It disturbs；It is found in ungrouped cell according to calculated result and maximum cell is interfered to non-empty group.
Wherein, when calculating interference of the ungrouped cell to the interference adjacent area in non-empty group, for ungrouped each small
Area calculates separately its interference to the interference adjacent area in each non-empty group.By cell to the interference adjacent area in a non-empty group
The sum of interference is as the interference to the non-empty group, and more each cell is to the interference maximum value of each non-empty group, and comparison result is most
Big cell is to interfere maximum cell to non-empty group.
Assuming that there are two ungrouped cell Cell4And Cell5, there are two non-empty group C1And C2.It then calculates separately: Cell4
To C1The interference of middle interference adjacent area, Cell4To C2The interference of middle interference adjacent area, Cell5To C1The interference of middle interference adjacent area, Cell5
To C2The interference of middle interference adjacent area.By Cell4To C1Interference and Cell5To C1Interference be compared, if Cell4To C1's
Interference is big, then Cell4It is to C1Maximum cell is interfered, is similarly found out to C2Interfere maximum cell, such as Cell5.Again will
Cell4To C1Interference and Cell5To C2Interference be compared, find and maximum cell, such as Cell interfered to non-empty group5。
Wherein it is possible to calculate interference of the cell to non-empty group by following formula:
Wherein, I (Cellk,Cn) it is CellkTo CnInterference, here i.e. to CnIn interference adjacent area the sum of interference；
IkFor CellkInterference adjacent area set in the interference relationships table of adjacent area；
wk,jFor CellkTo CnInterior CelljInterference value, CelljFor CellkInterference adjacent area in the interference relationships table of adjacent area.
Implementation B2:
Calculate interference of the ungrouped cell to the cell in non-empty group；It is looked into ungrouped cell according to calculated result
It looks for and maximum cell is interfered to non-empty group.
Wherein, when calculating interference of the ungrouped cell to the cell in non-empty group, for ungrouped each cell, divide
Its interference to the cell in each non-empty group is not calculated.By cell to the sum of interference of cell in a non-empty group as pair
The interference of the non-empty group, for more each cell to the interference maximum value of each non-empty group, the maximum cell of comparison result is to non-
Sky group interferes maximum cell.
Wherein it is possible to calculate interference of the cell to non-empty group by following formula:
Wherein, I (Cellk,Cn) it is CellkTo CnInterference, here i.e. to CnIn the sum of the interference of cell；
CnFor the set of cells in group n, n=1,2 ..., N；
wk,jFor CellkTo CnInterior CelljInterference value, CelljFor CnIn cell.
In above-mentioned treatment process, ungrouped each cell is separately added into the implementation interfered in the smallest group by it
There are many, it is only exemplified by below wherein several.
Implementation C1:
One, which is determined, respectively for each group interferes it maximum ungrouped cell；It is maximum by being interfered in determining cell
Cell be added and interfered the smallest target group by it, the target group of cell is not comprising belonging to same base station with the cell
Group；It repeats the above steps until will be in all ungrouped cell addition groups.
Wherein it is determined that cell in interfere maximum cell, refer to the maximum cell of interference to corresponding group.
Assuming that there are three organize C1、C2And C3, there is 4 non-packet cell Cell1、Cell2、Cell3And Cell4.To C1Interference is most
Big cell is Cell1, to C2Interfering maximum cell is Cell2, to C3Interfering maximum cell is Cell3, it is assumed that Cell1It is right
C1Interference be greater than Cell2To C2Interference, and be greater than Cell3To C3Interference, compare Cell1To C2And C3Interference, if
Cell1To C2Interference be less than to C3Interference, and C2In without and Cell1Belong to the cell of same base station, then by Cell1It is added
C2。Cell2、Cell3And Cell4In, to C1Interfering maximum cell is Cell3, to C2Interfering maximum cell is Cell2, to C3
Interfering maximum cell is Cell4, it is assumed that Cell2To C2Interference be greater than Cell3To C1Interference, and be greater than Cell4To C3's
Interference, compares Cell2To C1And C3Interference, if Cell1To C1Interference be less than to C3Interference, and C1In without and Cell2
Belong to the cell of same base station, then by Cell2C is added1。Cell3And Cell4In, to C1Interfering maximum cell is Cell3, right
C2Interfering maximum cell is Cell4, to C3Interfering maximum cell is Cell3, it is assumed that Cell3To C1Interference be greater than Cell4
To C2Interference, and be greater than its to C3Interference, compare Cell3To C2And C3Interference, if Cell3To C2Interference be less than pair
C3Interference, and C2In without and Cell3Belong to the cell of same base station, then by Cell3C is added2。Cell4To C2Interference most
Greatly, compare Cell4To C1And C3Interference, if Cell4To C1Interference be less than to C3Interference, and C1In without and Cell4Belong to
Cell in same base station, then by Cell4C is added1。
Implementation C2:
One, which is determined, respectively for each group interferes it maximum ungrouped cell；Respectively by determining cell be added by
It interferes the smallest target group, and the target group of cell is not comprising the group for belonging to same base station with the cell；It repeats the above steps
Until will be in all ungrouped cell addition groups.
Assuming that there are three organize C1、C2And C3, there is 4 non-packet cell Cell1、Cell2、Cell3And Cell4.To C1Interference is most
Big cell is Cell1, to C2Interfering maximum cell is Cell2, to C3Interfering maximum cell is Cell3, compare Cell1It is right
C2And C3Interference, if Cell1To C2Interference be less than to C3Interference, and C2In without and Cell1Belong to same base station
Cell, then by Cell1C is added2, compare Cell2To C1And C3Interference, if Cell2To C1Interference be less than to C3Interference,
And C1In without and Cell2Belong to the cell of same base station, then by Cell2C is added1, compare Cell3To C1And C2Interference, such as
Fruit Cell3To C2Interference be less than to C1Interference, and C2In without and Cell3Belong to the cell of same base station, then by Cell3Add
Enter C2。Cell4To C2Interference it is maximum, compare Cell4To C1And C3Interference, if Cell4To C1Interference be less than to C3It is dry
It disturbs, and C1In without and Cell4Belong to the cell of same base station, then by Cell4C is added1。
It should be pointed out that implementation can be cooperated between above-mentioned each implementation.If implementation A1 and B1 cooperate
Implement, then only it needs to be determined that the interference adjacent area of a cell.
Based on above-mentioned any means embodiment, the implementations of above-mentioned steps 110 can with but be not limited only to be:
N number of working frequency range (including center frequency point and bandwidth, each working frequency range are chosen within the scope of the working frequency range of permission
Center frequency point it is not identical), one working frequency range of each group of correspondence, preferably, this N number of working frequency range does not overlap；
For cell configuration work frequency range: the cell in group configures identical working frequency range, and the cell between group configures different
Working frequency range；
The frequency point and bandwidth information of cell are sent, to base station so that the cell under base station uses the frequency point and bandwidth work of configuration
Make.
In above-mentioned each embodiment, before the frequency range that shares out the work for cell, cell is not opened also, but can pass through cell
Identification information distinguish each cell.The identification information of cell can be base station requests to report when working frequency range to central node
, being also possible to centralized node is base station distribution.
Based on above-mentioned any means embodiment, when having new cell, the interference of the new cell to each group is calculated；It should
New cell is added to be interfered in the smallest target group by it, and the target group of cell is not comprising belonging to same base station with the cell
Group；It shares out the work frequency range for the new cell, the center of other cells in the working frequency range and the new cell group be added
Frequency point is identical.
Based on above-mentioned any means embodiment, there is cell to close or when load reduces, searched respectively in each group by
The maximum cell of interference in group；Successively determine that the smallest target group of interference by the cell found, the target group of cell are
Not comprising the group for belonging to same base station with the cell, until the interference for thering is the cell found to be subject in determining target group
Less than the interference being subject in former group, the cell found is adjusted to determining target group；It is found described in adjustment
Other cells in the group that the working frequency range of cell, the center frequency point of the working frequency range and the cell found are adjusted to
Center frequency point is identical.
Preferably, the set-up procedure of above-mentioned cell grouping is repeated, until the cell number for being grouped adjustment reaches predetermined value.
Cell is closed or cell load reduces, and shows that inter-cell interference reduces, and resource is more than needed, can be adjusted,
Specific implementation may is that
Step 1, centralized node traverse N number of group, and to the interference that cell in each group of calculating group is subject to, specific formula for calculation is such as
Under:
Wherein, I (Celln,i) it is CnInterior cell Celln,iThe interference being subject to；
CnFor the set of cells in group n, n=1,2 ..., N；
wk,jFor CelljTo Celln,iInterference value, can be the measured value of measurement amount, be also possible to interference calculation value,
CelljFor CnIn cell.
It should be pointed out that calculating CnInterior cell Celln,iWhen the interference being subject to, it is also possible to calculate CnInterior Cellj's
The sum of the interference that each interference adjacent area is subject to.
Step 2, centralized node find the maximum cell Cell that is interfered to each groupnAs to be adjusted small
Area, n=1,2 ..., N, optionally, CellnLoad be more than thresholding；
Step 3, centralized node find the maximum cell Cell that is interfered in cell to be adjustedmax；
Step 4, centralized node calculate CellmaxThe smallest group of C of interference is found in the interference organized to other N-1min, and Cmin
In without and CellmaxThe cell of same home base station；
Step 5, centralized node calculate CellmaxIn CminIn the interference that is subject to, if it is less than the interference being subject to before, then
Centralized node is by CellmaxIt is adjusted to CminIn, and working frequency range is adjusted for it, otherwise, jumps and execute step 3, until N number of wait adjust
Whole cell is all traversed.
Optionally, centralized node executes step 1~5, until the cell number of adjustment meets preset value M.
Under normal circumstances, the cell number of adjustment should not be too large, because a cell to work is carried out working frequency range
Adjustment, can have an impact to the service UE under cell.
The influence to service UE can be reduced using following methods:
UE is reconfigured (comprising cell working frequency range adjusted), appoints the time of action, guarantees UE small
Continue bedding and clothing business after area's adjustment；
UE is switched to other cells；
If UE is in carrier wave polymerization state, it can guarantee that cell adjusts rank by way of SCell deactivation/activation
Section UE is not serviced, and continues bedding and clothing business after adjustment.
Based on inventive concept same as method, the embodiment of the present invention also provides a kind of Inter-Cell Interference Coordination device, such as
Shown in Fig. 2, which includes:
Cell grouping module 201, for the cell of each base station to be grouped, wherein mutual interference is allowing
Cell in range is divided into one group；
Working frequency range distribution module 202, for being respectively that each group cell shares out the work frequency range, wherein divide with group cell
The center frequency point for the working frequency range matched is identical, and the center frequency point of difference group cell institute assignment frequency range is different.
Preferably, identical with group cell institute's assignment frequency range.
Preferably, the cell grouping module is specifically used for:
Determine the maximum cell of the interference being subject in the cell of each base station, and by the maximum cell of the interference being subject to
A group is added；
It is found in ungrouped cell and maximum cell is interfered to non-empty group, and the cell found is added one
Empty group, until all groups have cell addition；Interference to non-empty group is the sum of the interference to each cell in the non-empty group；
Ungrouped each cell is separately added into and is interfered in the smallest group by it.
Preferably, when determining the maximum cell of the interference being subject in the cell of each base station, the cell grouping module tool
Body is used for:
Determine the interference adjacent area of the cell of each base station；
The cell for calculating each base station is interfered the interference of adjacent area；
According to the interference for the adjacent area that is interfered, the maximum cell of interference being subject to is determined from the cell of each base station.
Preferably, when determining the maximum cell of the interference being subject in the cell of each base station, the cell grouping module tool
Body is used for:
Calculate interference of the cell by other cells of each base station；
According to the interference by other cells, the maximum cell of interference being subject to is determined from the cell of each base station.
Preferably, the cell is grouped mould when found in ungrouped cell to non-empty group interference maximum cell
Block is specifically used for:
Determine the interference adjacent area of the cell of each base station；
Calculate interference of the ungrouped cell to the interference adjacent area in non-empty group；
It is found in ungrouped cell according to calculated result and maximum cell is interfered to non-empty group.
Preferably, the cell is grouped mould when found in ungrouped cell to non-empty group interference maximum cell
Block is specifically used for:
Calculate interference of the ungrouped cell to the cell in non-empty group；
It is searched in ungrouped cell according to calculated result and maximum cell is interfered to non-empty group.
Preferably, the cell is grouped mould when ungrouped each cell is separately added by its smallest group of interference
Block is specifically used for:
One, which is determined, respectively for each group interferes it maximum ungrouped cell；
To wherein interfere maximum cell to be added and be interfered the smallest target group by it, the target group of cell for not comprising with institute
State the group that cell belongs to same base station；
It repeats the above steps until will be in all ungrouped cell addition groups.
Preferably, the cell is grouped mould when ungrouped each cell is separately added by its smallest group of interference
Block is specifically used for:
One, which is determined, respectively for each group interferes it maximum ungrouped cell；
Determining cell is added respectively and is interfered the smallest target group by it, the target group of cell be not comprising with it is described small
Area belongs to the group of same base station；
It repeats the above steps until will be in all ungrouped cell addition groups.
Preferably, when having new cell:
The cell grouping module is also used to, and calculates interference of the new cell to each group；By the new cell
It is added and is interfered in the smallest target group by it, the target group of cell is not comprising the group for belonging to same base station with the cell；
The working frequency range distribution module is also used to, and is shared out the work frequency range for the new cell, the working frequency range with
The center frequency point of other cells is identical in the new cell group be added.
Preferably, when thering is cell closing or load to reduce:
The cell grouping module is also used to, and is searched respectively in each group and is organized the interior maximum cell of interference；Successively really
The fixed the smallest target group of interference by the cell found, the target group of cell are not comprising belonging to same base with the cell
The group stood, until the interference for having the cell found to be subject in determining target group is less than the interference being subject in former group, it will
The cell found is adjusted to determining target group；
The working frequency range distribution module is also used to, the working frequency range of the cell found described in adjustment, the work frequency
The center frequency point of section is identical as the center frequency point of other cells in the group that the cell found is adjusted to.
Preferably, the set-up procedure of above-mentioned cell grouping and working frequency range is repeated, until being grouped the cell number of adjustment
Reach predetermined value.
Based on inventive concept same as method, the embodiment of the present invention also provides a kind of base station, as shown in Figure 3, comprising:
Processor 301, the processor 301 are configured as executing the computer program for having following function: by each base station
Cell be grouped, wherein the cell of mutual interference within the allowable range is divided into one group；The respectively small differentiation of each group
With working frequency range, wherein, difference group cell institute assignment identical with the group center frequency point of cell institute assignment frequency range
The center frequency point of frequency range is different；
Memory 302, the memory 302 are configured as saving the code of above-mentioned computer program.
Technical solution provided in an embodiment of the present invention is suitable for OFDM (Orthogonal Frequency Division
Multiplexing, orthogonal frequency division multiplexing) technology LTE system, being equally applicable to more base station networkings may cause co-channel interference
Other wireless communication systems.
It should be understood by those skilled in the art that, the embodiment of the present invention can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the present invention
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the present invention, which can be used in one or more,
The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces
The form of product.
The present invention be referring to according to the method for the embodiment of the present invention, the process of equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (22)
1. a kind of inter-cell interference coordination method characterized by comprising
It determines the maximum cell of the interference being subject in the cell of each base station, and the maximum cell of the interference being subject to is added
One group；
It is found in ungrouped cell and maximum cell is interfered to non-empty group, and a sky is added in the cell found
Group, until all groups have cell addition, wherein the interference to non-empty group be interference to each cell in the non-empty group it
With；
Ungrouped each cell is separately added into and is interfered in the smallest group by it, wherein mutual interference is in allowed band
Interior cell is divided into one group；
Respectively each group cell shares out the work frequency range, wherein and it is identical with the group center frequency point of cell institute assignment frequency range, no
It is different with the center frequency point of group cell institute assignment frequency range.
2. the method according to claim 1, wherein identical with group cell institute's assignment frequency range.
3. method according to claim 1 or 2, which is characterized in that determine the interference being subject in the cell of each base station most
Big cell, comprising:
Determine the interference adjacent area of the cell of each base station；
The cell for calculating each base station is interfered the interference of adjacent area；
According to the interference for the adjacent area that is interfered, the maximum cell of interference being subject to is determined from the cell of each base station.
4. according to the method described in claim 3, it is characterized in that, the interference being subject in the cell of determining each base station is maximum
Cell, comprising:
Calculate interference of the cell by other cells of each base station；
According to the interference by other cells, the maximum cell of interference being subject to is determined from the cell of each base station.
5. according to the method described in claim 3, it is characterized in that, being found in ungrouped cell to the interference of non-empty group most
Big cell, comprising:
Determine the interference adjacent area of the cell of each base station；
Calculate interference of the ungrouped cell to the interference adjacent area in non-empty group；
It is found in ungrouped cell according to calculated result and maximum cell is interfered to non-empty group.
6. according to the method described in claim 3, it is characterized in that, being found in ungrouped cell to the interference of non-empty group most
Big cell, comprising:
Calculate interference of the ungrouped cell to the cell in non-empty group；
It is searched in ungrouped cell according to calculated result and maximum cell is interfered to non-empty group.
7. according to the method described in claim 3, it is characterized in that, ungrouped each cell is separately added by its interference most
In small group, comprising:
One, which is determined, respectively for each group interferes it maximum ungrouped cell；
To wherein interfere maximum cell to be added and be interfered the smallest target group by it, the target group of cell be not comprising with it is described small
Area belongs to the group of same base station；
It repeats the above steps until will be in all ungrouped cell addition groups.
8. according to the method described in claim 3, it is characterized in that, ungrouped each cell is separately added by its interference most
In small group, comprising:
One, which is determined, respectively for each group interferes it maximum ungrouped cell；
Determining cell is added respectively and is interfered the smallest target group by it, the target group of cell be not comprising with the cell category
Group in same base station；
It repeats the above steps until will be in all ungrouped cell addition groups.
9. method according to claim 1 or 2, which is characterized in that when having new cell, this method further include:
Calculate interference of the new cell to each group；
The new cell is added and is interfered in the smallest target group by it, the target group of cell be not comprising with the cell category
Group in same base station；
It shares out the work frequency range for the new cell, other cells in the working frequency range and the new cell group be added
Center frequency point is identical.
10. method according to claim 1 or 2, which is characterized in that when thering is cell closing or load to reduce, this method
Further include:
It is searched respectively in each group and is organized the interior maximum cell of interference；
Successively determine the smallest target group of interference by the cell found, the target group of cell be not comprising with the cell
Belong to the group of same base station, until there is the cell found to be subject in determining target group interference be less than in former group by
Interference, the cell found is adjusted to determining target group；
The working frequency range of the cell found described in adjustment, the center frequency point of the working frequency range and the cell tune found
It is whole to group in other cells center frequency point it is identical.
11. according to the method described in claim 10, it is characterized in that, repeat the set-up procedure of above-mentioned cell grouping, until into
The cell number of row grouping adjustment reaches predetermined value.
12. a kind of Inter-Cell Interference Coordination device characterized by comprising
Cell grouping module, the maximum cell of interference that is subject in the cell for determining each base station, and be subject to described
Interfere maximum cell that a group is added；It is found in ungrouped cell and maximum cell is interfered to non-empty group, and will looked into
An empty group is added in the cell found, until all groups have cell addition, wherein the interference to non-empty group is to the non-empty
The sum of the interference of each cell in group；And ungrouped each cell is separately added into and is interfered in the smallest group by it, wherein
The cell of mutual interference within the allowable range is divided into one group；
Working frequency range distribution module, for being respectively that each group cell shares out the work frequency range, wherein with group cell institute assignment
The center frequency point of frequency range is identical, and the center frequency point of difference group cell institute assignment frequency range is different.
13. device according to claim 12, which is characterized in that identical with group cell institute's assignment frequency range.
14. device according to claim 12 or 13, which is characterized in that determine the interference being subject in the cell of each base station
When maximum cell, the cell grouping module is specifically used for:
Determine the interference adjacent area of the cell of each base station；
The cell for calculating each base station is interfered the interference of adjacent area；
According to the interference for the adjacent area that is interfered, the maximum cell of interference being subject to is determined from the cell of each base station.
15. device according to claim 14, which is characterized in that determine that the interference being subject in the cell of each base station is maximum
Cell when, the cell grouping module is specifically used for:
Calculate interference of the cell by other cells of each base station；
According to the interference by other cells, the maximum cell of interference being subject to is determined from the cell of each base station.
16. device according to claim 14, which is characterized in that find in ungrouped cell and interfere non-empty group
When maximum cell, the cell grouping module is specifically used for:
Determine the interference adjacent area of the cell of each base station；
Calculate interference of the ungrouped cell to the interference adjacent area in non-empty group；
It is found in ungrouped cell according to calculated result and maximum cell is interfered to non-empty group.
17. device according to claim 14, which is characterized in that find in ungrouped cell and interfere non-empty group
When maximum cell, the cell grouping module is specifically used for:
Calculate interference of the ungrouped cell to the cell in non-empty group；
It is searched in ungrouped cell according to calculated result and maximum cell is interfered to non-empty group.
18. device according to claim 14, which is characterized in that be separately added into ungrouped each cell and interfered by it
When in the smallest group, the cell grouping module is specifically used for:
One, which is determined, respectively for each group interferes it maximum ungrouped cell；
To wherein interfere maximum cell to be added and be interfered the smallest target group by it, the target group of cell be not comprising with it is described small
Area belongs to the group of same base station；
It repeats the above steps until will be in all ungrouped cell addition groups.
19. device according to claim 14, which is characterized in that be separately added into ungrouped each cell and interfered by it
When in the smallest group, the cell grouping module is specifically used for:
One, which is determined, respectively for each group interferes it maximum ungrouped cell；
Determining cell is added respectively and is interfered the smallest target group by it, the target group of cell be not comprising with the cell category
Group in same base station；
It repeats the above steps until will be in all ungrouped cell addition groups.
20. device according to claim 12 or 13, which is characterized in that when having new cell:
The cell grouping module is also used to, and calculates interference of the new cell to each group；The new cell is added
It is interfered in the smallest target group by it, the target group of cell is not comprising the group for belonging to same base station with the cell；
The working frequency range distribution module is also used to, and is shared out the work frequency range for the new cell, the working frequency range with it is described
The center frequency point of other cells is identical in new cell group be added.
21. device according to claim 12 or 13, which is characterized in that when thering is cell closing or load to reduce:
The cell grouping module is also used to, and is searched respectively in each group and is organized the interior maximum cell of interference；Successively determine by
To the smallest target group of interference of the cell found, the target group of cell is not comprising belonging to same base station with the cell
Group, until the interference for having the cell found to be subject in determining target group is less than the interference being subject in former group, it will be described
The cell found is adjusted to determining target group；
The working frequency range distribution module is also used to, the working frequency range of the cell found described in adjustment, the working frequency range
Center frequency point is identical as the center frequency point of other cells in the group that the cell found is adjusted to.
22. device according to claim 21, which is characterized in that repeat above-mentioned cell grouping and the adjustment of working frequency range walks
Suddenly, until the cell number for being grouped adjustment reaches predetermined value.
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| CN107148053B (en) * | 2016-03-01 | 2021-10-29 | 中兴通讯股份有限公司 | Data configuration method and device |
| CN105828381B (en) * | 2016-05-13 | 2019-07-02 | 京信通信系统（中国）有限公司 | The method and the network equipment of a kind of determination to interference coordination base station |
| CN106102076B (en) * | 2016-06-15 | 2020-11-13 | 惠州Tcl移动通信有限公司 | Self-adaptive frequency adjusting method and system for indoor coverage network |
| CN109314932A (en) * | 2016-06-28 | 2019-02-05 | 华为技术有限公司 | A kind of method and device for coordinating area interference |
| CN106412988B (en) * | 2016-10-31 | 2019-05-31 | 东南大学 | A kind of improved super-intensive heterogeneous network disturbance coordination method based on weighted graph |
| CN109842457B (en) * | 2017-11-24 | 2020-09-11 | 中国移动通信集团山东有限公司 | Atmospheric waveguide interference suppression method and system |
| CN108693542B (en) * | 2018-03-15 | 2020-10-27 | 中国农业大学 | Frequency allocation method and device for reference station |
| CN112689330A (en) * | 2019-10-18 | 2021-04-20 | 中兴通讯股份有限公司 | Method, base station and system for inhibiting cell co-frequency interference |
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