CN103139780B - inter-cell interference coordination method and device - Google Patents
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- CN103139780B CN103139780B CN201110378026.6A CN201110378026A CN103139780B CN 103139780 B CN103139780 B CN 103139780B CN 201110378026 A CN201110378026 A CN 201110378026A CN 103139780 B CN103139780 B CN 103139780B
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Abstract
The invention discloses a kind of inter-cell interference coordination method and device, this method includes：Base station determines the position of user according to measurement report, and the wherein position of user includes one below：The cell edge between cell edge, base station and other base stations in center of housing estate, base station；Available band is determined according to the interference band information from other base stations；In available band, according to the position of user to user resource allocation.The present invention improves the effect of frequency selection scheduling, and make it that scheduling and frequency partition are more flexible.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of inter-cell interference coordination method and device.
Background technology
In LTE system, as a result of orthogonal frequency division multiplexi, intra-cell interference has eliminated, but with frequency
In the case of networking, inter-cell interference between neighbor cell still be present.And with the application of identical networking, it is particularly in
The Cell Edge User of multiple MPS process, because edge customer is closer apart from neighbor cell, these edge customers can be to phase
The user of adjacent cell produces bigger interference, thus inter-cell interference turn into system for restricting capacity and systematic function it is main because
Element.
In order to suppress or eliminate inter-cell interference, the method for the Inter-Cell Interference Coordination used in correlation technique.But it
The frequency band for dispatching edge customer can be limited, weaken the effect of frequency selection scheduling.
The content of the invention
The frequency band for dispatching edge customer can be limited for inter-cell interference coordination method, weaken the effect of frequency selection scheduling
The problem of fruit, the invention provides a kind of inter-cell interference coordination method and device, at least to solve the problem.
The invention provides a kind of inter-cell interference coordination method, this method includes：Base station determines to use according to measurement report
The position of the position at family, wherein user includes one below：Cell edge, base station and other base stations in center of housing estate, base station
Between cell edge；Available band is determined according to the interference band information from other base stations；In available band, according to user
Position to user resource allocation.
Preferably, in available band, according to the position of user to user resource allocation before, in addition to：According to load
By being ranked up to light order to the cell in base station again.
Preferably, in available band, included according to the position of user to user resource allocation：In available band, root
According to user resource allocation of the position of user to the preceding cell that sorts.
Preferably, the cell in base station is ranked up according to the method including at least one of：PRB utilization rates, RB
Quantity allotted, the RB quantity allotteds of edge customer.
Preferably, before available band is determined according to the interference band information from other base stations, in addition to：Receive and
The interference band information by X2 Signalling exchanges from other base stations.
Preferably, in available band, included according to the position of user to user resource allocation：It is small in the position of user
In the case of cell edge of the district center either in base station, the resource for the first band distributed to user in available band, and
Cell Edge User in base station with same coverage area offsets one from another on frequency domain；Base station in the position of user with
In the case of cell edge between other base stations, the resource for the second band distributed to user in available band.
Present invention also offers a kind of Inter-Cell Interference Coordination device, applied to base station.The device includes：First determines mould
Block, for determining the position of user according to measurement report, the wherein position of user includes one below：In center of housing estate, base station
Cell edge, the cell edge between base station and other base stations；Second determining module, for according to the interference from other base stations
Band information determines available band；Distribute module, in available band, according to the position of user to user resource allocation.
Preferably, said apparatus also includes：Order module, for according to load by again to light order to small in base station
Area is ranked up.
Preferably, distribute module includes：First distribution sub module, in available band, being given according to the position of user
The user resource allocation for the preceding cell that sorts.
Preferably, distribute module includes：Second distribution sub module, for being center of housing estate either base in the position of user
In the case of cell edge in standing, the resource for the first band distributed to user in available band, and there is the identical area of coverage
Cell Edge User in the base station in domain offsets one from another on frequency domain；3rd distribution sub module, for being base in the position of user
In the case of the cell edge stood between other base stations, the resource for the second band distributed to user in available band.
The present invention, to user resource allocation, improves frequency selection scheduling by distinguishing the position of user to according to the position
Effect, and cause scheduling and frequency partition it is more flexible.
Brief description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, forms the part of the application, this hair
Bright schematic description and description is used to explain the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the flow chart of inter-cell interference coordination method according to embodiments of the present invention；
Fig. 2 is the schematic diagram of Inter-Cell Interference Coordination according to the preferred embodiment of the invention；
Fig. 3 is the flow chart of inter-cell interference coordination method according to the preferred embodiment of the invention；
Fig. 4 is the schematic diagram of MPS process situation according to the preferred embodiment of the invention；
Fig. 5 is the schematic diagram of frequency band according to the preferred embodiment of the invention；
Fig. 6 is the structured flowchart of Inter-Cell Interference Coordination device according to embodiments of the present invention；
Fig. 7 is the structured flowchart one of Inter-Cell Interference Coordination device according to the preferred embodiment of the invention；
Fig. 8 is the structured flowchart two of Inter-Cell Interference Coordination device according to the preferred embodiment of the invention.
Embodiment
Describe the present invention in detail below with reference to accompanying drawing and in conjunction with the embodiments.It should be noted that do not conflicting
In the case of, the feature in embodiment and embodiment in the application can be mutually combined.
The invention provides a kind of inter-cell interference coordination method.Fig. 1 is inter-cell interference according to embodiments of the present invention
The flow chart of coordination approach, as shown in figure 1, including steps S102 to step S106.
Step S102, base station determine the position of user according to measurement report, and the wherein position of user includes one below：It is small
The cell edge between cell edge, base station and other base stations in district center, base station.
Step S104, available band is determined according to the interference band information from other base stations.
Step S106, in available band, according to the position of user to user resource allocation.
In correlation technique, inter-cell interference coordination method can be limited the frequency band for dispatching edge customer, weakened frequency and selected
The effect of scheduling.In the embodiment of the present invention, improved by distinguishing the position of user, and according to the position to user resource allocation
The effect of frequency selection scheduling in base station, and make it that scheduling and frequency partition are more flexible.
And then, it is contemplated that more available bandwidth can be taken by loading the cell of weight, and is loaded light cell and had many skies
Not busy resource, is just being used on coordination edge customer, and the present invention can be according to load by light order, entering to the cell in base station again
Row sequence, then according to the position of user, in available band, to the user resource allocation for the preceding cell that sorts, so as to real
The user resource allocation of the preceding cell of existing priority ordering (cell of load weight), then to posterior cell (load of sorting
Light cell) user resource allocation, can to greatest extent by edge customer coordinate open.Wherein, the cell in base station is entered
The method of row sequence can include the RB quantity allotteds of PRB utilization rates, RB quantity allotteds or edge customer.
Preferably, according to the interference band information from other base stations, before determining available band, the present invention can be with
Including that, by X2 Signalling exchange interference band information, so, coordinating semi-static interference can be carried out between base station, to assist between base station
Business limits the scope of frequency band.
It should be noted that can be by such a way to user resource allocation, the i.e. position in user in the present invention
In the case of being cell edge of the center of housing estate either in base station, the money for the first band distributed to user in available band
Source, and the Cell Edge User in the base station with same coverage area offsets one from another on frequency domain；It is base in the position of user
In the case of the cell edge stood between other base stations, the resource for the second band distributed to user in available band.So, will
The Cell Edge User between Cell Edge User and base station in base station is dispatched over different frequency bands respectively, fully achieves frequency
With orthogonal.
It should be noted that can be in such as one group of computer executable instructions the flow of accompanying drawing illustrates the step of
Performed in computer system, although also, show logical order in flow charts, in some cases, can be with not
The order being same as herein performs shown or described step.
Illustrated below in conjunction with preferred embodiment, preferred embodiment below combines above-described embodiment and is preferable to carry out
Mode.
Fig. 2 is the schematic diagram of Inter-Cell Interference Coordination according to the preferred embodiment of the invention, as shown in Fig. 2 being adopted in base station
With using coordinating semi-static interference mechanism between dynamic interference coordination mechanism, base station.
Fig. 3 is the flow chart of inter-cell interference coordination method according to the preferred embodiment of the invention, as shown in figure 3, including
Steps S302 to step S308.
Step S302, the measurement report triggered according to A3 events judge the position of user, and serving cell can be inferred that use
Family is in cell edge or center of housing estate.When in cell edge, can determining whether in the covering of which cell.
If these adjacent areas belong to same eNodeB with serving cell, the user is the edge customer in eNodeB, if wherein
One adjacent area is not belonging to an eNodeB with serving cell, then the user is the edge customer between eNodeB.
Fig. 4 is the schematic diagram of MPS process situation according to the preferred embodiment of the invention, as shown in figure 4, being deposited around cell 1
In cell 2 and 3, cell 1 and cell 2 belong to same eNodeB1, and cell 3 belongs to eNodeB2.Wherein region A, B, C, D is represented
The covering lap of three cells.
When user is located at region A, user is the eNodeB inward flange users of cell 1 and cell 2；When user is located at region
During B, user be cell 1 and cell 3 eNodeB between edge customer；When user is located at region C, user is cell 2 and cell 3
ENodeB between edge customer；When user is located at region D, user be cell 1, cell 2 and cell 3 eNodeB between edge use
Family, and the eNodeB inward flange users of cell 1 and cell 2.
Pass through X2 signalings (such as Overload Indicator, High Interference between step S304, eNodeB
Indication), that informs this cell of neighbor cell is disturbed frequency band or generation interference band, and neighbor cell can make edge
User avoids these frequency bands, to suppress inter-cell interference.Both sides finally negotiate limitation frequency according to the loading condition of either own cell
The scope of band.The user type judged according to step S302, draw the available band of user.
Fig. 5 is the schematic diagram of frequency band according to the preferred embodiment of the invention, as shown in figure 5, frequency band 1 is small for dispatcher-controlled territory
Edge customer between the eNodeB of area 1 and cell 2, i.e., positioned at Fig. 2 region B, C and D user, remaining frequency band 2 be used for dispatch
Edge customer and central user in eNodeB, i.e., positioned at Fig. 2 region A user and Cell Center User.So cell 1 and
Edge customer is dispatched over different frequency bands respectively between the eNodeB of cell 2 and cell 3, fully achieves multi-band orthogonal.
Step S306, the cell in eNodeB is ranked up, determines the dispatching sequence of cell.Why excellent sector sequence is
The cell of first scheduling load weight, it is that can very likely take more available bandwidth because of the heavy cell of load, and it is light in load
Cell have many idling-resources, be just used on coordination edge customer.
The sort method of cell can have following one or more：
Method one：PRB utilization rates.Count each cell PRB utilization rates.PRB utilization rates are higher, i.e., the cell eats dishes without rice or wine to bear
Carry heavier, priority is higher；Otherwise, the cell has a more idle PRB, and priority is relatively low.
Method two：RB quantity allotteds.The RB quantity summations that will be distributed in the current TTI of each cell of pre-estimation.If RB
Quantity is higher, then illustrates that the PRB occupancies of the cell current TTI Nei are very high, and priority is high, otherwise on the contrary.
Method three：The RB quantity allotteds of edge customer.Edge customer will be distributed in the current TTI in each sector of pre-estimation
RB quantity summations.If RB quantity is higher, illustrate that the edge customer of the sector current TTI Nei RB quantity to be allocated compares
Height, the frequency band limitation that needs consider in frequency selection scheduling is more, if first dispatching the user of the cell, can ensure larger traffic number
Preferable frequency band is selected according to the edge customer of amount, so priority is high, it is otherwise on the contrary.
Sector sequence is all based on the method design of pre-estimation load.Excellent sector sort algorithm, can preferentially be protected
The scheduling of heavier loads cell is demonstrate,proved, and then improves throughput of system.
Step S308, frequency band selection is carried out according to user type, coordinate to open by edge customer as far as possible.
The dispatching method of the present invention is exemplified below.
It is assumed that being sorted according to step S306, the priority of the cell 1 under eNodeB1 is more than cell 2.
The user of cell 1 is first dispatched, according to the channel quality of user, the factor such as qos requirement of business, user is entered one by one
Row scheduling.Consider the type of user, the available band selected in step s 304 is scheduled：1) when user is center of housing estate
Edge customer in user or eNodeB, resource is distributed for it in frequency band 1 in Figure 5；2) side between user is eNodeB
Edge user, resource is distributed for it in frequency band 2 in Figure 5.
Then the user of cell 2 is dispatched.Because cell 1 has preferentially been dispatched, the edge customer of cell 2 will be kept away as far as possible
Open the scheduled edge customer in cell 1.
1) when being that it distributes resource in user-center user, frequency band 1 in Figure 5, the scheduling feelings of cell 1 are not considered
Condition.
2) when being its distribution money in the eNodeB inward flange users that user is cell 2 and cell 1, frequency band 1 in Figure 5
Source, and can not be with the eNodeB inward flange user occupancy identical frequency bands of cell 2 and cell 1 scheduled in cell 1.
3) edge customer between user is the eNodeB of cell 2 and cell 3, distributes resource for it in Figure 5, does not consider small
The dispatch situation in area 1.
4) edge customer between user is the eNodeB of cell 1, cell 2 and cell 3, and be cell 1 and cell 2
ENodeB inward flange users, resource is distributed for it in frequency band 2 in Figure 5, and can not be with cell 2 scheduled in cell 1
With the eNodeB inward flange user occupancy identical frequency bands of cell 1.
The embodiments of the invention provide a kind of Inter-Cell Interference Coordination device, the Inter-Cell Interference Coordination device can be used for
Realize above-mentioned inter-cell interference coordination method.Fig. 6 is the structural frames of Inter-Cell Interference Coordination device according to embodiments of the present invention
Figure, as shown in fig. 6, including the first determining module 62, the second determining module 64 and distribute module 66, its structure is carried out below detailed
Thin description.
First determining module 62, for according to measurement report, determining the position of user, the wherein position of user includes following
One of：The cell edge between cell edge, base station and other base stations in center of housing estate, base station；Second determining module 64, is used for
According to the interference band information from other base stations, available band is determined；Distribute module 66, it is connected to the He of the first determining module 62
Second determining module 64, for the position of the user determined according to the first determining module 62, determined in the second determining module 64
In available band, to user resource allocation.
Fig. 7 is the structured flowchart one of Inter-Cell Interference Coordination device according to the preferred embodiment of the invention, as shown in fig. 7,
Said apparatus also includes order module 68, for according to load by light order, being ranked up to the cell in base station again.Point
Include with module 66：First distribution sub module 662, in available band, the row of order module 68 to be given according to the position of user
The user resource allocation of the preceding cell of sequence.
Fig. 8 is the structured flowchart two of Inter-Cell Interference Coordination device according to the preferred embodiment of the invention, as shown in figure 8,
Above-mentioned distribute module 66 includes the second distribution sub module 664 and the 3rd distribution sub module 666.Its structure is retouched in detail below
State.
Second distribution sub module 664, the first determining module 62 and the second determining module 64 are connected to, for being determined first
In the case that the position for the user that module 62 determines is cell edge of the center of housing estate either in base station, to user's distribution second
The resource of first band in the available band that determining module 64 determines, and the cell side in the base station with same coverage area
Edge user offsets one from another on frequency domain；3rd distribution sub module 666, it is connected to the first determining module 62 and the second determining module
64, in the case that the position of the user for being determined in the first determining module 62 is the cell edge between base station and other base stations,
The resource for the second band distributed to user in the available band of the second determining module 64 determination.
Implement it should be noted that the Inter-Cell Interference Coordination device described in device embodiment corresponds to above-mentioned method
Example, its concrete implementation process had carried out detailed description in embodiment of the method, will not be repeated here.
In summary, according to the abovementioned embodiments of the present invention, there is provided a kind of inter-cell interference coordination method and device.This
Invention to user resource allocation, improves the effect of frequency selection scheduling by distinguishing the position of user, and to according to the position, and
So that scheduling and frequency partition are more flexible.
Obviously, those skilled in the art should be understood that above-mentioned each module of the invention or each step can be with general
Computing device realize that they can be concentrated on single computing device, or be distributed in multiple computing devices and formed
Network on, alternatively, they can be realized with the program code that computing device can perform, so as to being stored in
Performed in storage device by computing device, they are either fabricated to each integrated circuit modules respectively or by them
Multiple modules or step be fabricated to single integrated circuit module to realize.So, the present invention is not restricted to any specific hard
Part and software combine.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (8)
- A kind of 1. inter-cell interference coordination method, it is characterised in that including：Base station determines the position of user according to measurement report, wherein the position of the user includes one below：Center of housing estate, institute State the cell edge between cell edge in base station, the base station and other base stations；Available band is determined according to the interference band information from other base stations；In the available band, the user resource allocation is given according to the position of the user；Wherein, in the available band, before giving the user resource allocation according to the position of the user, in addition to：Press According to load by being ranked up to light order to the cell in the base station again, wherein, in accordance with the following methods in the base station Cell be ranked up：The RB quantity allotteds of edge customer.
- 2. according to the method for claim 1, it is characterised in that in the available band, according to the position of the user Include to the user resource allocation：It is preceding small to the sequence according to the position of the user in the available band The user resource allocation in area.
- 3. according to the method for claim 1, it is characterised in that according to the also method including at least one of to the base Cell in standing is ranked up：PRB utilization rates, RB quantity allotteds.
- 4. according to the method for claim 1, it is characterised in that according to the interference band information from other base stations Before determining available band, in addition to：The interference band by X2 Signalling exchanges from other base stations is received to believe Breath.
- 5. method according to any one of claim 1 to 4, it is characterised in that in the available band, according to described The position of user includes to the user resource allocation：In the case of in the position of the user being cell edge of the center of housing estate either in the base station, to the user point Resource with the first band in the available band, and the Cell Edge User in the base station with same coverage area is in frequency Offset one from another on domain；In the case of being the cell edge between the base station and other base stations in the position of the user, institute is distributed to the user State the resource of the second band in available band.
- A kind of 6. Inter-Cell Interference Coordination device, applied to base station, it is characterised in that including：First determining module, for determining the position of user according to measurement report, wherein the position of the user include it is following it One：Cell edge between center of housing estate, the cell edge in the base station, the base station and other base stations；Second determining module, for determining available band according to the interference band information from other base stations；Distribute module, in the available band, the user resource allocation to be given according to the position of the user；Order module, for according to load by being ranked up to light order to the cell in the base station again, wherein, according to Under type is ranked up to the cell in the base station：The RB quantity allotteds of edge customer.
- 7. device according to claim 6, it is characterised in that the distribute module includes：First distribution sub module, is used for In the available band, according to user resource allocation of the position of the user to the preceding cell of sequence.
- 8. the device according to any one of claim 6 to 7, it is characterised in that the distribute module includes：Second distribution sub module, for being cell edge of the center of housing estate either in the base station in the position of the user In the case of, the resource for the first band distributed to the user in the available band, and the base station with same coverage area Interior Cell Edge User offsets one from another on frequency domain；3rd distribution sub module, for being the situation of cell edge between the base station and other base stations in the position of the user Under, the resource for the second band distributed to the user in the available band.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105101221B (en) * | 2014-05-20 | 2018-09-14 | 普天信息技术有限公司 | A kind of LTE system dynamic interference coordination method and device |
| CN104066191B (en) * | 2014-06-24 | 2017-11-24 | 京信通信系统（中国）有限公司 | A kind of method and device for distributing frequency spectrum resource |
| CN107888257B (en) * | 2016-09-30 | 2022-09-16 | 中兴通讯股份有限公司 | Beam selection method, device and base station |
| CN111083745B (en) * | 2018-10-19 | 2022-06-07 | 成都鼎桥通信技术有限公司 | Scheduling method and device |
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| CN101534560A (en) * | 2008-03-14 | 2009-09-16 | 中兴通讯股份有限公司 | Method for harmonizing intercell interference of wireless communication system |
| CN101600212A (en) * | 2009-07-06 | 2009-12-09 | 北京邮电大学 | Improving one's methods of a kind of soft-frequency reuse that is used for ofdm system |
| CN102006598A (en) * | 2009-08-26 | 2011-04-06 | 富士通株式会社 | Base station, communication system, and communication method |
| CN102045855A (en) * | 2009-10-12 | 2011-05-04 | 中兴通讯股份有限公司 | Method for coordinating interference among cells, base station equipment and communication system |
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| US7916649B2 (en) * | 2004-09-30 | 2011-03-29 | Alcatel-Lucent Usa Inc. | Apparatus and method for monitoring and analysis of communication over a wireless network |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101534560A (en) * | 2008-03-14 | 2009-09-16 | 中兴通讯股份有限公司 | Method for harmonizing intercell interference of wireless communication system |
| CN101600212A (en) * | 2009-07-06 | 2009-12-09 | 北京邮电大学 | Improving one's methods of a kind of soft-frequency reuse that is used for ofdm system |
| CN102006598A (en) * | 2009-08-26 | 2011-04-06 | 富士通株式会社 | Base station, communication system, and communication method |
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Effective date of registration: 20171114 Address after: 518000 Guangdong Province, Shenzhen New District of Longhua City, Dalang street, Longsheng Gold Dragon Road community e-commerce incubator exhibition Tao Commercial Plaza E block 706 Applicant after: Shenzhen Meliao Technology Transfer Center Co.,Ltd. Address before: 518057 Nanshan District science and technology, Guangdong Province, South Road, No. 55, No. Applicant before: ZTE Corp. |
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Inventor after: Yang Zhengguo Inventor after: Shi Yingchun Inventor after: Yu Shulun Inventor before: Niu Li Inventor before: Li Nan Inventor before: Zhang Dongying |
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Effective date of registration: 20240607 Address after: Room 903, Building 1, No. 118 Aoti Street, Jianye District, Nanjing City, Jiangsu Province, 210000 Patentee after: Beiyoute Technology Co.,Ltd. Country or region after: China Address before: 224000 area 1, science and technology innovation building, wisdom Valley, science and Education City, Xindu street, Chengnan New District, Yancheng City, Jiangsu Province (CND) Patentee before: JIANGSU TONGRUAN TECHNOLOGY CO.,LTD. Country or region before: China |