CN104244256B - A kind of method and apparatus that interference coordination control is carried out to cell - Google Patents
A kind of method and apparatus that interference coordination control is carried out to cell Download PDFInfo
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- CN104244256B CN104244256B CN201310226446.1A CN201310226446A CN104244256B CN 104244256 B CN104244256 B CN 104244256B CN 201310226446 A CN201310226446 A CN 201310226446A CN 104244256 B CN104244256 B CN 104244256B
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Abstract
The invention discloses a kind of method and apparatus that interference coordination control is carried out to cell, content includes：Obtain the adjacent area interference information of multiple base stations, wherein described adjacent area interference information includes the mark of each base station, the annoyance level value that the adjacent area mark of each base station and each base station are disturbed by adjacent area corresponding to the mark of the adjacent area, the annoyance level value that the adjacent area according to corresponding to each base station of acquisition by adjacent area mark is disturbed, utilize clustering algorithm, sub-clustering processing is carried out to the base station for obtaining adjacent area interference information, and the cluster cell to obtaining carries out interference coordination control, the higher base station of the degree of being interfered so is divided into cluster cell, interference coordination control is carried out to obtained cluster cell, it ensure that the optimization of cluster intra-cell resource allocation, improve the efficiency of interference coordination, reduce the frequency and quantity of signalling between network element in system, save network signaling overhead.
Description
Technical field
The present invention relates to wireless communication field, more particularly to a kind of the method for interference coordination control is carried out to cell and is set
It is standby.
Background technology
LTE（Long Term Evolution, Long Term Evolution）Wireless access system as next generation mobile communication network
System, there is big bandwidth, high-speed, the advantage of low time delay, bring splendid mobile Internet to experience for user.
In order to improve the availability of frequency spectrum, identical networking mode is used in LTE system, but this identical networking mode makes
User's interference is more serious between obtaining neighbor cell, causes the poor-performing of Cell Edge User.In order to suppress to be used between neighbor cell
Family is disturbed, and LTE system employs Inter-Cell Interference Coordination（ICIC, Inter-Cell Interference Coordination）
Technology.
As shown in figure 1, the structural representation for the application of ICIC technologies.The basic functional principle of the ICIC technologies is：Phase
Pass through interface-free resources between cell that is adjacent and interfering（Including：Power resource and running time-frequency resource）Interference coordination is carried out, from
And reduce the interference between neighbor cell.Such as：Base station is that the power of Cell Edge User distribution higher than base station is center of housing estate
The power of user's distribution；Different base station isolates neighbor cell using high-power frequency resource, and by dividing for edge customer
Downlink data is sent with different time-domain resources, reduces the interference between neighbor cell.
For ICIC technologies, apply in preferable hexagonal honeycomb structure and/or user is evenly distributed on macrocellular network
Coverage in when, minizone only need static configuration can be realized as suppress interference purpose, still, for irregular structure
Practical application network and the characteristics of uneven user distribution, it is necessary to which the interference to minizone carries out real time coordination.
The implementation that common interference is coordinated is divided into two kinds：First way is distributed interference coordination mode, second
Mode is centralized interference coordination mode.
Wherein, so-called distributed interference coordination mode refers to that each cell or base station are divided respective resource respectively
Match somebody with somebody, when carrying out resource allocation, it may be considered that the status information of adjacent cell.
But during for carrying out neighboring interval interference coordination using distributed interference coordination mode, for a cell, for this
The adjacent cell that cell interferes have it is multiple, when for one of adjacent cell carry out interference coordination operation when, while occur with
Interference coordination is carried out to other adjacent cells and operates afoul situation so that the interference coordination strategy taken can not effectively drop
Interference that is low or eliminating neighboring interval, causes systematic function very poor, reduces the efficiency of interference coordination.
So-called centralized interference coordination mode refers to dispose a controller in network system, managed each in network system
The resource allocation of individual cell.
Although solving the problems, such as that efficiency existing for distributed interference coordination is low, disclosure satisfy that the optimization of global resource makes
With, but the quantity of information transfer on return link is on the one hand added, requirements at the higher level are proposed to bandwidth, and to centralized optimization
Algorithm and central controlled disposal ability require also higher so that centralization distribution interference coordination mode is difficult in practical application.
The content of the invention
It is existing for solving the embodiments of the invention provide a kind of method and apparatus that interference coordination control is carried out to cell
In technology the signalling amount occurred on the premise of ensureing interference coordination treatment effeciency is big the problem of.
A kind of method that interference coordination control is carried out to cell, including：
The adjacent area interference information of multiple base stations is obtained, wherein, mark of the adjacent area interference information including each base station,
The annoyance level value that the adjacent area mark of each base station and each base station are disturbed by adjacent area corresponding to the mark of the adjacent area；
The annoyance level value that the adjacent area according to corresponding to each base station of acquisition by adjacent area mark is disturbed, using poly-
Class algorithm, sub-clustering processing is carried out to the base station for obtaining adjacent area interference information, and the cluster cell to obtaining carries out interference coordination control.
A kind of equipment that interference coordination control is carried out to cell, including：
Acquisition module, for obtaining the adjacent area interference information of multiple base stations, wherein, the adjacent area interference information includes each
What the mark of individual base station, the adjacent area mark of each base station and each base station were disturbed by adjacent area corresponding to the mark of the adjacent area
Annoyance level value；
Interference coordination control module, done for each base station according to acquisition by adjacent area corresponding to the mark of the adjacent area
The annoyance level value disturbed, using clustering algorithm, sub-clustering processing, and the cluster to obtaining are carried out to the base station for obtaining adjacent area interference information
Cell carries out interference coordination control.
The present invention has the beneficial effect that：
The embodiment of the present invention by obtaining the adjacent area interference informations of multiple base stations, wherein the adjacent area interference information include it is every
The mark of one base station, the adjacent area mark of each base station and each base station are disturbed by adjacent area corresponding to the mark of the adjacent area
Annoyance level value, according to each base station of acquisition by the adjacent area mark corresponding to adjacent area disturb annoyance level value,
Using clustering algorithm, sub-clustering processing is carried out to the base station for obtaining adjacent area interference information, and the cluster cell to obtaining carries out interference association
Regulation and control system, the higher base station of the degree of being interfered so is divided into cluster cell, interference coordination control is carried out to obtained cluster cell
System, ensure that the optimization of cluster intra-cell resource allocation, improves the efficiency of interference coordination, reduce in system signaling between network element
The frequency and quantity of transmission, save network signaling overhead.
Brief description of the drawings
Fig. 1 is the structural representation of ICIC technologies application；
Fig. 2 is a kind of flow chart of method that interference coordination control is carried out to cell of the embodiment of the present invention one；
Fig. 3 is that a kind of flow of method that interference coordination control is carried out to base station in cluster cell of the embodiment of the present invention two is shown
It is intended to；
Fig. 4 is a kind of structural representation of equipment that interference coordination is carried out to cell of the embodiment of the present invention three.
Embodiment
In order to realize the purpose of the present invention, the embodiments of the invention provide a kind of side that interference coordination control is carried out to cell
Method and equipment, by obtaining the adjacent area interference information of multiple base stations, wherein the adjacent area interference information includes each base station
The annoyance level that mark, the adjacent area mark of each base station and each base station are disturbed by adjacent area corresponding to the mark of the adjacent area
Value, the annoyance level value that the adjacent area according to corresponding to each base station of acquisition by adjacent area mark is disturbed, is calculated using cluster
Method, sub-clustering processing is carried out to the base station for obtaining adjacent area interference information, and the cluster cell to obtaining carries out interference coordination control, so
The higher base station of the degree of being interfered is divided into cluster cell, interference coordination control is carried out to obtained cluster cell, ensure that cluster
The optimization of intra-cell resource allocation, the efficiency of interference coordination is improved, reduce the frequency of signalling between network element in system
And quantity, save network signaling overhead.
The each embodiment of the present invention is described in detail with reference to Figure of description.
Embodiment one：
As shown in Fig. 2 a kind of flow chart of method that interference coordination control is carried out to cell for the embodiment of the present invention one,
Methods described includes：
Step 101：Obtain the adjacent area interference information of multiple base stations.
Wherein, the adjacent area interference information includes the mark of each base station, the adjacent area of each base station identifies and each
Annoyance level value of the individual base station by adjacent area interference corresponding to the mark of the adjacent area.
Specifically, in a step 101, the mode for obtaining the adjacent area interference information of base station includes but is not limited to：
First way：The adjacent area interference information that base station reports is received, wherein, contained in the adjacent area interference information
The annoyance level value that mark, adjacent area mark and the base station of base station are disturbed by adjacent area corresponding to the mark of the adjacent area.
That is each base station determines the adjacent area annoyance level value of itself, and reports common control equipment.
For a base station, illustrate that base station determines the mode of the annoyance level value by the interference of one of adjacent area：
Specifically, first, each user terminal that base station instruction is currently accessed carries out homogeneous-frequency adjacent-domain measurement, and will measurement
As a result the base station is reported.
Wherein, adjacent area physical label and neighboring cell signal quality value are contained in measurement result.
Such as：Assuming that base station A has N number of homogeneous-frequency adjacent-domain（L1~LN）, the user terminal of base station is currently accessed by U（UE1~
UEU）, the measurement result that each user terminal that base station A is received reports is：
As shown in table 1, with UEiIllustrated exemplified by the measurement result reported：
| Adjacent area physical label | Neighboring cell signal quality value |
| L1 | Q1 |
| …… | …… |
| Ln | Qn |
| …… | …… |
| LN | QN |
Table 1
Secondly, the base station determines the adjacent area of the base station according to the measurement result of each user terminal received
Interference matrix.
Specifically, the first step, a user terminal for being currently accessed the base station（With UEuExemplified by）, it is calculated
User terminal（UEu）Adjacent area interference submatrix.
Specifically, it is determined that what each user terminal being currently accessed in the base station was disturbed by the adjacent area of the base station
Interference factor.
Specifically, reported according to the signal quality value of the base station and a user terminal being currently accessed in the base station
The base station an adjacent area signal quality value, calculate the base station signal quality value and be currently accessed the base station
In the poor absolute value of the signal quality value of an adjacent area of the base station that reports of a user terminal；Judgement calculates
Whether the poor absolute value arrived is less than the numerical value of setting；
When the poor absolute value being calculated is less than the numerical value of setting, it is determined that being currently accessed the use in the base station
The interference factor that family terminal is disturbed by the adjacent area of the base station is the first numerical value；Otherwise, it determines it is currently accessed the base station
In the user terminal by the base station the adjacent area disturb interference factor be second value.
Assuming that the signal quality value of the base station is Q, user terminal UEuThe adjacent area L of the base station of measurement1Signal matter
Value is Q1, calculate Q and Q1Poor absolute value, and by the poor absolute value being calculated with set numerical value compared with, when
When the poor absolute value being calculated is less than the numerical value of setting, user terminal UE is determineduBy the adjacent area L of the base station1Interference
The factor is iu 1=the first numerical value；When numerical value of the poor absolute value being calculated not less than setting, user terminal UE is determineduBy
To the adjacent area L of the base station1Interference factor be iu 1=second value.
Therefore, user terminal UEuIt is by the adjacent area interference submatrix that the interference factor of the adjacent area of the base station forms
{iu n, wherein, n=1~N }.
It should be noted that the numerical value of the setting can determine according to being actually needed, can also be true according to experimental data
It is fixed, it is adjustable parameters, is defaulted as 6dB；First numerical value and the second value can determine according to being actually needed, and may be used also
To be determined according to experimental data, generally for convenience of calculation, it is 1 to set first numerical value, and the second value is 0.
More preferably, as user terminal UEuIt is not measured by the adjacent area L of the base station1Signal quality value when, i.e. user is whole
Hold UEuMeasure the adjacent area L of the base station1Signal quality value be 0, now, define user terminal UEuBy the base station
Adjacent area L1Interference value be iu 1=second value.
Second step, according to the interference factor of determination, the base station is calculated and is done by what the adjacent area of the base station was disturbed
Disturb matrix.
Specifically, the adjacent area interference submatrix of obtained U user terminal for being currently accessed the base station is combined
To the adjacent area interference matrix of the base station.
Specifically, the adjacent area interference matrix for obtaining the base station is { iu n, wherein, u=1~U, n=1~N }.
Specifically, the base station is calculated by the base using the interference factor determined in the following manner
Stand adjacent area interference interference matrix I be：
Wherein, I is the interference matrix that a base station is disturbed by the adjacent area of the base station,For u-th of the base station
The interference factor that user terminal is disturbed by n-th of adjacent area of the base station, equal to the first numerical value or second value, N is institute
The adjacent area number of base station is stated, is positive integer, U is the number for the user terminal for accessing the base station, is positive integer.
3rd, using obtained interference matrix, the base station is calculated and is disturbed by what the adjacent area of the base station was disturbed
Degree value.
Specifically, the adjacent area disturbed by one of adjacent area n the base station is calculated in the following manner and disturbs journey
Angle value is：
Wherein, αnTo obtain the annoyance level value that the base station is disturbed by the adjacent area n of the base station,For the base station
U-th of user terminal by the base station n-th of adjacent area disturb interference factor, equal to the first numerical value or second count
Value, N are the adjacent area number of the base station, are positive integer, and U is the number for the user terminal for accessing the base station, is positive integer.
The second way：The nearby region measurement report of each base station transmission is received, according to the nearby region measurement received
Report, calculates adjacent area annoyance level value of each base station by n-th of adjacent area of the base station.
Wherein, the mark of base station, the signal quality value of base station, the mark of adjacent area and adjacent area are contained in the measurement report
Signal quality value.
It should be noted that the measurement report that each base station is sent can be sent in the form of a list, here not
Limit.
It should be noted that being reported according to the nearby region measurement received, each base station is calculated by the base station
N-th of adjacent area adjacent area annoyance level value it is identical with first way, do not do specifically repeat here.
Step 102：The annoyance level that the adjacent area according to corresponding to each base station of acquisition by adjacent area mark is disturbed
Value, using clustering algorithm, sub-clustering processing is carried out to the base station for obtaining adjacent area interference information.
Specifically, in a step 102, the adjacent area according to corresponding to each base station of acquisition by adjacent area mark is disturbed
Annoyance level value, using clustering algorithm, sub-clustering processing is carried out to the base station for obtaining adjacent area interference information, specifically included：
By the first annoyance level value of adjacent area B interference and setting corresponding to the base station A adjacent area being subject to mark
Thresholding is compared, and by the second annoyance level values disturb by the base station A of adjacent area B corresponding to the mark of the adjacent area and
Setting thresholding is compared, when comparative result is that the first annoyance level value is more than setting threshold value, and second interference
When value is more than setting threshold value, using clustering algorithm, judges whether the distance between base station A and base station B meet and polymerize thresholding, when
The distance between the base station A and base station B meet when polymerizeing thresholding, and base station A and base station B are divided in a cluster cell.
It should be noted that setting threshold value determines as needed with polymerizeing thresholding, can also be determined according to being actually needed,
Here do not limit.
It should be noted that the time for obtaining the adjacent area interference information of base station can be obtained in the cycle, then to base station
The time cycle for carrying out Clustering control will be longer than the time cycle for the adjacent area interference information for obtaining base station.
More preferably, after Clustering control is carried out to base station, Clustering control message is sent to base station, wherein, the sub-clustering
Cluster cell ID, the cluster control base station mark in the Base Station Identification and cluster cell that cluster cell includes are contained in control message.
Step 103：Interference coordination control is carried out to obtained cluster cell.
Specifically, in step 103, when reaching the time cycle of the interference coordination of setting, select in the cluster cell
A base station.
The resource block of the base station of selection is divided, and generates resource allocation message, is sent to the cluster cell
Interior other base stations in addition to the base station of selection.
Reduce cutting for other base stations in addition to the base station of selection that the base station is switched in the cluster cell
Thresholding is changed, improves the handoff threshold that other base stations in addition to the base station of selection switch to the base station of selection.
By the scheme of the embodiment of the present invention one, the adjacent area interference information of multiple base stations is obtained, wherein the adjacent area is disturbed
Information includes the mark of each base station, the adjacent area mark of each base station and each base station and is identified and correspond to by the adjacent area
Adjacent area interference annoyance level value, according to each base station of acquisition by the adjacent area mark corresponding to adjacent area interference done
Degree value is disturbed, using clustering algorithm, sub-clustering processing is carried out to the base station for obtaining adjacent area interference information, and the cluster cell to obtaining is entered
Row interference coordination is controlled, and the higher base station of the degree of being interfered so is divided into cluster cell, obtained cluster cell is done
Coordination control is disturbed, ensure that the optimization of cluster intra-cell resource allocation, improves the efficiency of interference coordination, reduces network element in system
Between signalling frequency and quantity, save network signaling overhead.
Embodiment two：
A kind of as shown in figure 3, method that interference coordination control is carried out to base station in cluster cell for the embodiment of the present invention two
Schematic flow sheet, the scheme of the embodiment of the present invention two carries out on the basis of the embodiment of the present invention one, methods described bag
Include：
Step 201：When reaching the time cycle of the interference coordination of setting, a base station in the cluster cell is selected.
Specifically, in step 201, selecting the method for a base station in the cluster cell includes：
First, the load information that each base station reports in cluster cell is received.
Specifically, each base station real-time report load information in the cluster cell, or periodic report load information,
Here do not limit.
It should be noted that the cycle of base station periodic report load information is shorter, than week time of the interference coordination of setting
Phase is short.
Secondly, base station is selected according to the load information received.
Specifically, when the information content of the load information of each base station received differs, select described negative
The base station of the information content minimum of information carrying breath；
When the information content of the load information of each base station received is identical, the transmitting work(of the signal is selected
The maximum base station of rate.
Step 202：The resource block of the base station of selection is divided.
Specifically, in step 202, the resource block of the base station of selection is determined, and pair resource block determined is drawn
Point, including：
Because resource block includes frequency domain resource and power resource, therefore, when pair resource block determined divides, will select
The 1/R of the frequency domain resource of the resource block for the base station selected is divided into reservation resource, the frequency of the resource block of the base station of selection
Domain resource（R-1）/ R is divided into coordination resource.
Wherein, the transmission power for the reservation resource for dividing to obtain keeps constant, divides the obtained transmitting work(of coordination resource
Rate reduces setting numerical value.
It should be noted that setting numerical value is controllable parameter, can be set according to being actually needed, can also be according to experiment
Data are set, and can are 3dB, 4dB or 6dB, not limited here.
It should be noted that described retain resource to access the resource that the edge user terminal of the base station uses, it is described
Coordination resource is except the base station of selection in cluster cell that the central user terminal of the access base station uses and described
Outside the resource that uses of other base stations.
More preferably, after being divided to resource block, resource allocation information is generated.
Step 203：By the resource allocation information of generation be sent in the cluster cell except selection the base station it
Other outer base stations.
Specifically, in step 203, by resource allocation information inform in the cluster cell except the base of selection
Other base stations outside standing, the resource allocation conditions of the base station.
Step 204：Reduce other in addition to the base station of selection that the base station is switched in the cluster cell
The handoff threshold of base station, improve the switching that other base stations in addition to the base station of selection switch to the base station of selection
Thresholding.
Specifically, in step 204, by reduce the base station switch in the cluster cell except described in selection
The handoff threshold of other base stations outside base station, the user terminal in the base station in the non-covered confined area in edge is switched to
Other base stations in addition to the base station of selection in the cluster cell so that described in the reservation resource for dividing to obtain meets
Base station uses；The switching door for switching to the base station of selection by improving other base stations in addition to the base station of selection
Limit, ensure that the coordination resource of the base station, reduces the interference between adjacent base station.
By the scheme of the embodiment of the present invention two, when reaching the time cycle of the interference coordination of setting, the cluster is selected
A base station in cell, the resource block of the base station of selection is divided, and generates resource allocation message, is sent to institute
Other base stations in addition to the base station of selection in cluster cell are stated, the base station is reduced and switches in the cluster cell
The handoff threshold of other base stations in addition to the base station of selection, improve other bases in addition to the base station of selection
Station switches to the handoff threshold of the base station of selection, and interference coordination is so carried out in units of cluster cell, ensure that cluster cell
The optimization of interior resource allocation, improve the efficiency of interference coordination.
Embodiment three：
As shown in figure 4, a kind of structural representation of equipment that Clustering control is carried out to cell for the embodiment of the present invention three,
The embodiment of the present invention three is the invention under same design with the embodiment of the present invention one and the embodiment of the present invention two, the equipment bag
Include：Acquisition module 11 and interference coordination control module 12, wherein：
Acquisition module 11, for obtaining the adjacent area interference information of multiple base stations, wherein, the adjacent area interference information includes every
The mark of one base station, the adjacent area mark of each base station and each base station are disturbed by adjacent area corresponding to the mark of the adjacent area
Annoyance level value；
Interference coordination control module 12, for each base station according to acquisition by adjacent area corresponding to the mark of the adjacent area
The annoyance level value of interference, using clustering algorithm, carry out sub-clustering processing to the base station for obtaining adjacent area interference information, and to obtaining
Cluster cell carries out interference coordination control.
Specifically, the acquisition module 11, specifically for each user terminal for determining to be currently accessed in the base station
The interference factor disturbed by the adjacent area of the base station；According to the interference factor of determination, the base station is calculated by described
The interference matrix of the adjacent area interference of base station；Using obtained interference matrix, neighbour of the base station by the base station is calculated
The annoyance level value of area's interference.
Specifically, the acquisition module 11, specifically for the signal quality value according to the base station and described in being currently accessed
The signal quality value of one adjacent area of the base station that a user terminal in base station reports, calculate the signal of the base station
The signal quality of one adjacent area of the base station that mass value reports with a user terminal being currently accessed in the base station
The poor absolute value of value；
Whether the poor absolute value for judging to be calculated is less than the numerical value of setting；
When the poor absolute value being calculated is less than the numerical value of setting, it is determined that being currently accessed the use in the base station
The interference factor that family terminal is disturbed by the adjacent area of the base station is the first numerical value；Otherwise, it determines it is currently accessed the base station
In the user terminal by the base station the adjacent area disturb interference factor be second value.
Specifically, the acquisition module 11, specifically for using the interference factor determined, calculating in the following manner
Obtain the base station is by the interference matrix I of the adjacent area interference of the base station：
Wherein, I is the interference matrix that a base station is disturbed by the adjacent area of the base station,For u-th of the base station
The interference factor that user terminal is disturbed by n-th of adjacent area of the base station, equal to the first numerical value or second value, N is institute
The adjacent area number of base station is stated, is positive integer, U is the number for the user terminal for accessing the base station, is positive integer.
Specifically, the acquisition module 11, specifically for the base station is calculated in the following manner by the base
The annoyance level value for the adjacent area n interference stood：
Wherein, αnTo obtain the annoyance level value that the base station is disturbed by the adjacent area n of the base station,For the base station
U-th of user terminal by the base station n-th of adjacent area disturb interference factor, equal to the first numerical value or second count
Value, N are the adjacent area number of the base station, are positive integer, and U is the number for the user terminal for accessing the base station, is positive integer.
More preferably, the interference coordination control module 12, is specifically included：Selecting unit 21, resource division unit 22 and cut
Thresholding adjustment unit 23 is changed, wherein：
Selecting unit 21, when the time cycle for the interference coordination in setting reaches, select one in the cluster cell
Individual base station；
Resource division unit 22, for the resource block of the base station of selection to be divided, and generate resource allocation and disappear
Breath, other base stations in addition to the base station of selection being sent in the cluster cell；
Handoff threshold adjustment unit 23, for reduce the base station switch in the cluster cell except described in selection
The handoff threshold of other base stations outside base station, improve other base stations in addition to the base station of selection and switch to selection
The handoff threshold of the base station.
Specifically, the selecting unit 21, specifically for receiving the load information that each base station reports in cluster cell, and
Base station is selected according to the load information received.
Specifically, the selecting unit 21, specifically for the letter of the load information when each base station received
When breath amount differs, the minimum base station of the information content of the load information is selected；
When the information content of the load information of each base station received is identical, the transmitting work(of the signal is selected
The maximum base station of rate.
Specifically, the resource division unit 22, specifically for by the frequency domain resource of the resource block of the base station of selection
1/R be divided into reservation resource, the frequency domain resource of the resource block of the base station of selection（R-1）/ R is divided into coordination resource；
Wherein, the transmission power for the reservation resource for dividing to obtain keeps constant, divides the obtained transmitting work(of coordination resource
Rate reduces setting numerical value, described to retain resource to access the resource that the edge user terminal of the base station uses, described to coordinate money
Source for access in cluster cell that the central user terminal of the base station uses and described in addition to the base station of selection
The resource that other base stations use.
It should be noted that the equipment that the embodiment of the present invention three is related to can be the sub-clustering described in the embodiment of the present invention one
Control device, it is the network element device in network, can also be the logical block in the server of network side, does not do specific limit here
It is fixed.
The selecting unit that is included in the interference coordination control module being related in the embodiment of the present invention, resource division unit and cut
Change thresholding adjustment unit with function can also be base station side with function, by cluster cell have selecting unit, resource
The base station of division unit and the function of handoff threshold adjustment unit is controlled to the interference coordination of cluster cell, reduces network side
With the signalling quantity of base station side, signaling consumption is saved.
It will be understood by those skilled in the art that embodiments of the invention can be provided as method, apparatus（Equipment）Or computer
Program product.Therefore, in terms of the present invention can use complete hardware embodiment, complete software embodiment or combine software and hardware
Embodiment form.Moreover, the present invention can use the meter for wherein including computer usable program code in one or more
Calculation machine usable storage medium（Including but not limited to magnetic disk storage, CD-ROM, optical memory etc.）The computer journey of upper implementation
The form of sequence product.
The present invention is with reference to method, apparatus according to embodiments of the present invention（Equipment）With the flow chart of computer program product
And/or block diagram describes.It should be understood that can be by each flow in computer program instructions implementation process figure and/or block diagram
And/or square frame and the flow in flow chart and/or block diagram and/or the combination of square frame.These computer programs can be provided to refer to
The processors of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing devices is made to produce
One machine so that produced by the instruction of computer or the computing device of other programmable data processing devices for realizing
The device for the function of being specified in one flow of flow chart or multiple flows and/or one square frame of block diagram or multiple square frames.
These computer program instructions, which may be alternatively stored in, can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that the instruction being stored in the computer-readable memory, which produces, to be included referring to
Make the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one square frame of block diagram or
The function of being specified in multiple square frames.
These computer program instructions can be also loaded into computer or other programmable data processing devices so that counted
Series of operation steps is performed on calculation machine or other programmable devices to produce computer implemented processing, so as in computer or
The instruction performed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in individual square frame or multiple square frames.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know basic creation
Property concept, then can make other change and modification to these embodiments.So appended claims be intended to be construed to include it is excellent
Select embodiment and fall into having altered and changing for the scope of the invention.
Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the present invention to the present invention
God and scope.So, if these modifications and variations of the present invention belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising including these changes and modification.
Claims (16)
- A kind of 1. method that interference coordination control is carried out to cell, it is characterised in that including：The adjacent area interference information of multiple base stations is obtained, wherein, the adjacent area interference information includes identifying, being each for each base station The annoyance level value that the adjacent area mark of individual base station and each base station are disturbed by adjacent area corresponding to the mark of the adjacent area；The annoyance level value that the adjacent area according to corresponding to each base station of acquisition by adjacent area mark is disturbed, is calculated using cluster Method, sub-clustering processing is carried out to the base station for obtaining adjacent area interference information, and the cluster cell to obtaining carries out interference coordination control；Wherein, interference coordination control is carried out to obtained cluster cell, specifically included：When reaching the time cycle of the interference coordination of setting, a base station in the cluster cell is selected；The resource block of the base station of selection is divided, and generates resource allocation message, is sent in the cluster cell Other base stations in addition to the base station of selection；Reduce the switching door for other base stations in addition to the base station of selection that the base station is switched in the cluster cell Limit, improves the handoff threshold that other base stations in addition to the base station of selection switch to the base station of selection.
- 2. the method as described in claim 1, it is characterised in that the annoyance level value that any base station is disturbed by adjacent area, specifically Including：It is determined that the interference factor that each user terminal being currently accessed in the base station is disturbed by the adjacent area of the base station；According to the interference factor of determination, the interference matrix that the base station is disturbed by the adjacent area of the base station is calculated；Using obtained interference matrix, the annoyance level value that the base station is disturbed by the adjacent area of the base station is calculated.
- 3. method as claimed in claim 2, it is characterised in that it is determined that a user terminal being currently accessed in the base station by The interference factor disturbed to the adjacent area of the base station, is specifically included：The base station reported according to the signal quality value of the base station and a user terminal being currently accessed in the base station An adjacent area signal quality value, calculate the signal quality value of the base station and a use being currently accessed in the base station The poor absolute value of the signal quality value of one adjacent area of the base station that family terminal reports；Whether the poor absolute value for judging to be calculated is less than the numerical value of setting；When the poor absolute value being calculated is less than the numerical value of setting, it is determined that the user being currently accessed in the base station is whole The interference factor that end is disturbed by the adjacent area of the base station is the first numerical value；Otherwise, it determines it is currently accessed in the base station The interference factor that the user terminal is disturbed by the adjacent area of the base station is second value.
- 4. method as claimed in claim 3, it is characterised in that according to the interference factor of determination, be calculated the base station by The interference matrix disturbed to the adjacent area of the base station, is specifically included：In the following manner using the interference factor determined, the base station is calculated and is disturbed by the adjacent area of the base station Interference matrix I be：<mrow> <mi>I</mi> <mo>=</mo> <mo>{</mo> <msubsup> <mi>i</mi> <mi>u</mi> <mi>n</mi> </msubsup> <mo>,</mo> <mi>n</mi> <mo>=</mo> <mn>1</mn> <mo>~</mo> <mi>N</mi> <mo>,</mo> <mi>u</mi> <mo>=</mo> <mn>1</mn> <mo>~</mo> <mi>U</mi> <mo>}</mo> <mo>;</mo> </mrow>Wherein, I is the interference matrix that a base station is disturbed by the adjacent area of the base station,It is whole for u-th of user of the base station The interference factor that end is disturbed by n-th of adjacent area of the base station, equal to the first numerical value or second value, N is the base station Adjacent area number, be positive integer, U is the number for the user terminal for accessing the base station, is positive integer.
- 5. method as claimed in claim 4, it is characterised in that using obtained interference matrix, be calculated the base station by The annoyance level value disturbed to the adjacent area of the base station, is specifically included：The annoyance level value that the base station is disturbed by the adjacent area n of the base station is calculated in the following manner：<mrow> <msub> <mi>&alpha;</mi> <mi>n</mi> </msub> <mo>=</mo> <munderover> <mo>&Sigma;</mo> <mrow> <mi>u</mi> <mo>=</mo> <mn>1</mn> </mrow> <mi>U</mi> </munderover> <mrow> <mo>(</mo> <msubsup> <mi>i</mi> <mi>u</mi> <mi>n</mi> </msubsup> <mo>*</mo> <mfrac> <mrow> <munderover> <mo>&Sigma;</mo> <mrow> <mi>n</mi> <mo>=</mo> <mn>1</mn> </mrow> <mi>N</mi> </munderover> <msubsup> <mi>i</mi> <mi>u</mi> <mi>n</mi> </msubsup> </mrow> <mi>N</mi> </mfrac> <mo>)</mo> </mrow> <mo>;</mo> </mrow>Wherein, αnTo obtain the annoyance level value that the base station is disturbed by the adjacent area n of the base station,For the u of the base station The interference factor that individual user terminal is disturbed by n-th of adjacent area of the base station, equal to the first numerical value or second value, N is The adjacent area number of the base station, it is positive integer, U is the number for the user terminal for accessing the base station, is positive integer.
- 6. the method as described in claim 1, it is characterised in that select a base station in the cluster cell, specifically include：Receive the load information that each base station reports in cluster cell；Base station is selected according to the load information received.
- 7. method as claimed in claim 6, it is characterised in that base station is selected according to the load information received, specifically Including：When the information content of the load information of each base station received differs, the information of the load information is selected Measure minimum base station；When the information content of the load information of each base station received is identical, the transmission power maximum of selection signal Base station.
- 8. method as claimed in claim 6, it is characterised in that divided the resource block of the base station of selection, specifically Including：The 1/R of the frequency domain resource of the resource block of the base station of selection is divided into reservation resource, the money of the base station of selection (R-1)/R of the frequency domain resource of source block is divided into coordination resource；Wherein, the transmission power for the reservation resource for dividing to obtain keeps constant, divides the obtained transmission power drop of coordination resource Low setting numerical value, described to retain resource to access the resource that the edge user terminal of the base station uses, the coordination resource is Other in addition to the base station of selection accessed in cluster cell that the central user terminal of the base station uses and described The resource that base station uses.
- A kind of 9. equipment that interference coordination control is carried out to cell, it is characterised in that including：Acquisition module, for obtaining the adjacent area interference information of multiple base stations, wherein, the adjacent area interference information includes each base Mark, the adjacent area mark of each base station and each base station stood are disturbed by adjacent area interference corresponding to the mark of the adjacent area Degree value；Interference coordination control module, for each base station according to acquisition by adjacent area interference corresponding to the mark of the adjacent area Annoyance level value, using clustering algorithm, sub-clustering processing, and the cluster cell to obtaining are carried out to the base station for obtaining adjacent area interference information Carry out interference coordination control；Wherein, the interference coordination control module, is specifically included：Selecting unit, when the time cycle for the interference coordination in setting reaches, select a base station in the cluster cell；Resource division unit, for the resource block of the base station of selection to be divided, and resource allocation message is generated, sent To other base stations in addition to the base station of selection in the cluster cell；Handoff threshold adjustment unit, for reduce the base station switch in the cluster cell except selection the base station it The handoff threshold of other outer base stations, improve the base that other base stations in addition to the base station of selection switch to selection The handoff threshold stood.
- 10. equipment as claimed in claim 9, it is characterised in thatThe acquisition module, specifically for determining to be currently accessed each user terminal in the base station by the base station The interference factor of adjacent area interference；According to the interference factor of determination, the base station is calculated and is disturbed by the adjacent area of the base station Interference matrix；Using obtained interference matrix, the interference journey that the base station is disturbed by the adjacent area of the base station is calculated Angle value.
- 11. equipment as claimed in claim 10, it is characterised in thatThe acquisition module, specifically for the signal quality value according to the base station and a use being currently accessed in the base station The signal quality value of one adjacent area of the base station that family terminal reports, the signal quality value of the base station is calculated with currently connecing Enter the poor absolute value of the signal quality value of an adjacent area of the base station that in the base station user terminal reports；Whether the poor absolute value for judging to be calculated is less than the numerical value of setting；When the poor absolute value being calculated is less than the numerical value of setting, it is determined that the user being currently accessed in the base station is whole The interference factor that end is disturbed by the adjacent area of the base station is the first numerical value；Otherwise, it determines it is currently accessed in the base station The interference factor that the user terminal is disturbed by the adjacent area of the base station is second value.
- 12. equipment as claimed in claim 11, it is characterised in thatThe acquisition module, specifically for using the interference factor determined, the base station is calculated in the following manner It is by the interference matrix I that the adjacent area of the base station is disturbed：<mrow> <mi>I</mi> <mo>=</mo> <mo>{</mo> <msubsup> <mi>i</mi> <mi>u</mi> <mi>n</mi> </msubsup> <mo>,</mo> <mi>n</mi> <mo>=</mo> <mn>1</mn> <mo>~</mo> <mi>N</mi> <mo>,</mo> <mi>u</mi> <mo>=</mo> <mn>1</mn> <mo>~</mo> <mi>U</mi> <mo>}</mo> <mo>;</mo> </mrow>Wherein, I is the interference matrix that a base station is disturbed by the adjacent area of the base station,It is whole for u-th of user of the base station The interference factor that end is disturbed by n-th of adjacent area of the base station, equal to the first numerical value or second value, N is the base station Adjacent area number, be positive integer, U is the number for the user terminal for accessing the base station, is positive integer.
- 13. equipment as claimed in claim 12, it is characterised in thatThe acquisition module, disturbed specifically for the base station is calculated in the following manner by the adjacent area n of the base station Annoyance level value：<mrow> <msub> <mi>&alpha;</mi> <mi>n</mi> </msub> <mo>=</mo> <munderover> <mo>&Sigma;</mo> <mrow> <mi>u</mi> <mo>=</mo> <mn>1</mn> </mrow> <mi>U</mi> </munderover> <mrow> <mo>(</mo> <msubsup> <mi>i</mi> <mi>u</mi> <mi>n</mi> </msubsup> <mo>*</mo> <mfrac> <mrow> <munderover> <mo>&Sigma;</mo> <mrow> <mi>n</mi> <mo>=</mo> <mn>1</mn> </mrow> <mi>N</mi> </munderover> <msubsup> <mi>i</mi> <mi>u</mi> <mi>n</mi> </msubsup> </mrow> <mi>N</mi> </mfrac> <mo>)</mo> </mrow> <mo>;</mo> </mrow>Wherein, αnTo obtain the annoyance level value that the base station is disturbed by the adjacent area n of the base station,For the u of the base station The interference factor that individual user terminal is disturbed by n-th of adjacent area of the base station, equal to the first numerical value or second value, N is The adjacent area number of the base station, it is positive integer, U is the number for the user terminal for accessing the base station, is positive integer.
- 14. equipment as claimed in claim 9, it is characterised in thatThe selecting unit, specifically for receiving the load information that reports of each base station in cluster cell, and according to receiving The load information selects base station.
- 15. equipment as claimed in claim 14, it is characterised in thatThe selecting unit, when being differed specifically for the information content of the load information when each base station received, Select the minimum base station of the information content of the load information；When the information content of the load information of each base station received is identical, the transmission power maximum of selection signal Base station.
- 16. equipment as claimed in claim 9, it is characterised in thatThe resource division unit, specifically for the 1/R of the frequency domain resource of the resource block of the base station of selection is divided into guarantor Resource is stayed, (R-1)/R of the frequency domain resource of the resource block of the base station of selection is divided into coordination resource；Wherein, the transmission power for the reservation resource for dividing to obtain keeps constant, divides the obtained transmission power drop of coordination resource Low setting numerical value, described to retain resource to access the resource that the edge user terminal of the base station uses, the coordination resource is Other in addition to the base station of selection accessed in cluster cell that the central user terminal of the base station uses and described The resource that base station uses.
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| CN104640193A (en) * | 2015-01-30 | 2015-05-20 | 中国联合网络通信集团有限公司 | Interference coordination method and device |
| CN106332090B (en) * | 2015-06-15 | 2020-02-18 | 中国移动通信集团公司 | Scheduling method and base station |
| CN106888506B (en) * | 2015-12-15 | 2021-06-11 | 亿阳信通股份有限公司 | Method and system for determining interference degree information between cells of LTE (Long term evolution) |
| CN106937294B (en) * | 2015-12-30 | 2021-04-16 | 上海无线通信研究中心 | Inter-network frequency spectrum resource coordination method and base station thereof |
| CN105933923B (en) * | 2016-04-19 | 2019-03-22 | 北京邮电大学 | A kind of super-intensive networking cell cluster-dividing method |
| 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 |
| CN107889117B (en) * | 2016-09-30 | 2022-05-10 | 英国电讯有限公司 | Resource allocation device, resource allocation method and communication system for small cell cluster |
| CN109391946B (en) * | 2017-08-07 | 2021-11-30 | 中国移动通信集团浙江有限公司 | Base station cluster planning method and device |
| CN116347452A (en) * | 2021-12-17 | 2023-06-27 | 中兴通讯股份有限公司 | Method, device, server and storage medium for coordinating interference of cells |
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