CN105451354A - Method and equipment for realizing dispatching of users based on inter-cell interference coordination parameters - Google Patents

Abstract

The invention aims to provide a method and equipment for realizing dispatching of users based on inter-cell interference coordination parameters. Specifically, a base station end sends inter-cell interference coordination information obtained by detection to corresponding central control equipment; inter-cell interference coordination parameter information corresponding to the inter-cell interference coordination information and service load ratio information which are sent by the central control equipment are received; according to the service load ratio information, the inter-cell interference coordination parameter information is finely adjusted, so as to obtain corresponding target inter-cell interference coordination parameter information; and according to the target inter-cell interference coordination parameter information, users that the base station serves are dispatched. Compared with the prior art, the method provided by the invention can inhibit interference between macro cells and interference of macro cells to micro cells, can dynamically adapt to changes of nonuniform service loads and user distribution in an LTE-A network, and also remarkably improves cell throughput, particularly the throughput of cell edge users.

Description

The method and apparatus of dispatched users is realized based on Inter-Cell Interference Coordination parameter

Technical field

The present invention relates to communication technical field, particularly relate to a kind of technology for realizing dispatched users based on Inter-Cell Interference Coordination parameter.

Background technology

Inter-cell interference cancellation technology ensures that communication system traffic channel can with frequently multiplexing important means, along with Long Term Evolution (LTE,, there is the inter-cell interference cancellation technology corresponding to Different L TE version in the LongTermEvolution)) development of technology, such as:

1) the static Inter-Cell Interference Coordination (ICIC, Inter-cellInterferenceCoordination) in LTERel-8/9 and semi-static ICIC

Traditionally, in LTERel-8/9, static ICIC and semi-static ICIC is as partial frequency multiplexing (FFR, and soft-frequency reuse (SFR FractionalFrequencyReuse), SoftFrequencyReuse) cell edge throughput performance can be improved, but with the loss of community average throughput for cost.These ICIC schemes are mainly used in homogeneous network, and in LTE heterogeneous network, especially, small cell (smallcell) Physical Downlink Control Channel (PDCCH, PhysicalDownlinkControlChannel) is subject to the stronger interference from macrocell (macrocell).

2) interference coordination (eICIC, EnhancedInter-cellInterferenceCoordination) between the enhancement type district in LTE-evolution (LTE-Advanced) Rel-10

In LTE heterogeneous network, introduce the almost blank subframe (ABS based on eICIC, AlmostBlankSubframe) to relax the interference that the user terminal (UE, UserEquipment) relevant to small cell is subject to from macrocell on PDCCH and PDSCH channel.

ABS and community select biased (CSB, CellSelectionBias) to be the parameter that eICIC scheme Plays is assented, and it has material impact in eICIC performance.The inappropriate setting of these two parameters can not bring eICIC gain, and, also can worsen systematic function.

3) the existing centralized dispatching mechanism of LTE/LTE-A

In some concentrated ICIC or dynamic eICIC scheme, centralized control requires the large volumes of channels state information (CSI of each UE in concurrency processing system, ChannelStateInformation), the UE that is scheduled uses Physical Resource Block (PRB, PhysicalResourceBlock) information, these can cause high backhaul signaling expense.

Because of very complicated algorithm or not by the inter-base station interface that LTE standard is supported, some other centralized dispatching schemes can not be used in real product.

In addition, existing concentrated ICIC or eICIC scheme is independent separately suppresses presence of intercell interference for macrocell to the angle between small cell and macrocell for some, seldom have scheme to relate to jointly to suppress between macrocell and macrocell to the interference of small cell, more can not the change of business load heterogeneous and user distribution in dynamically adapting LTE-A network.

Summary of the invention

An object of the present invention is to provide a kind of method and apparatus for realizing dispatched users based on Inter-Cell Interference Coordination parameter.

According to an aspect of the present invention, provide a kind of in base station end for realizing the method for dispatched users based on Inter-Cell Interference Coordination parameter, wherein, the method comprises:

A sends to the central control equipment of correspondence the Inter-Cell Interference Coordination information obtained after testing;

B receives the Inter-Cell Interference Coordination parameter information corresponding to described Inter-Cell Interference Coordination information and the business load rate information of the transmission of described central control equipment;

C, according to described business load rate information, finely tunes described Inter-Cell Interference Coordination parameter information, to obtain interference coordination parameters information between corresponding Target cell;

D, according to interference coordination parameters information between described Target cell, dispatches the user that described base station is served.

According to a further aspect in the invention, additionally provide a kind of at central control equipment end for realizing the method for dispatched users based on Inter-Cell Interference Coordination parameter, wherein, the method comprises:

A obtains the Inter-Cell Interference Coordination information about multiple base stations of correspondence;

B, according to described Inter-Cell Interference Coordination information, determines the Inter-Cell Interference Coordination parameter information described in each corresponding to base station and business load rate information;

C sends corresponding described Inter-Cell Interference Coordination parameter information and business load rate information to base station described in each.

According to an aspect of the present invention, additionally provide a kind of base station for realizing dispatched users based on Inter-Cell Interference Coordination parameter, wherein, this base station comprises:

First dispensing device, sends for the central control equipment to correspondence the Inter-Cell Interference Coordination information obtained after testing;

Second receiving system, for receiving the Inter-Cell Interference Coordination parameter information corresponding to described Inter-Cell Interference Coordination information and the business load rate information of the transmission of described central control equipment;

Micromatic setting, for according to described business load rate information, finely tunes described Inter-Cell Interference Coordination parameter information, to obtain interference coordination parameters information between corresponding Target cell;

Dispatching device, for according to interference coordination parameters information between described Target cell, dispatches the user that described base station is served.

According to a further aspect in the invention, additionally provide a kind of central control equipment for realizing dispatched users based on Inter-Cell Interference Coordination parameter, wherein, this central control equipment comprises:

Acquisition device, for obtaining the Inter-Cell Interference Coordination information of the multiple base stations about correspondence;

3rd determining device, for according to described Inter-Cell Interference Coordination information, determines the Inter-Cell Interference Coordination parameter information described in each corresponding to base station and business load rate information;

Second dispensing device, for sending corresponding described Inter-Cell Interference Coordination parameter information and business load rate information to base station described in each.

In accordance with a further aspect of the present invention, additionally provide a kind of system for realizing dispatched users based on Inter-Cell Interference Coordination parameter, wherein, this system comprises as aforementioned according to the base station of one aspect of the invention, and as aforementioned central control equipment according to a further aspect of the invention.

Compared with prior art, in one embodiment of the present of invention, base station sends by the central control equipment to correspondence the Inter-Cell Interference Coordination information obtained after testing, and receive the Inter-Cell Interference Coordination parameter information corresponding to described Inter-Cell Interference Coordination information and the business load rate information of central control equipment transmission, with according to business load rate information, finely tune described Inter-Cell Interference Coordination parameter information, obtain interference coordination parameters information between corresponding Target cell, thus according to interference coordination parameters information between Target cell, state the user served base station to dispatch, the present invention can be suppressed between macrocell simultaneously and macrocell to the interference of Microcell, and dynamic adapts to the change of business load heterogeneous and user distribution in LTE-A network, but also considerably improve cell throughout, especially the throughput of Cell Edge User.

Accompanying drawing explanation

By reading the detailed description done non-limiting example done with reference to the following drawings, other features, objects and advantages of the present invention will become more obvious:

Fig. 1 illustrates a kind of system topological figure for realizing dispatched users based on Inter-Cell Interference Coordination parameter according to one aspect of the invention;

It is a kind of for realizing the base station of dispatched users and the equipment schematic diagram of central control equipment based on Inter-Cell Interference Coordination parameter that Fig. 2 illustrates according to one aspect of the invention;

Fig. 3 illustrates a kind of cell deployment schematic diagram be made up of 7 communities;

Fig. 4 illustrates the input schematic diagram of the vertex coloring algorithm of one embodiment of the invention;

Fig. 5 illustrates that the vertex coloring algorithm correspondence based on Fig. 4 input exports schematic diagram;

Fig. 6 illustrates that base station according to a further aspect of the present invention and central control equipment coordinate and realizes a kind of method flow diagram for realizing dispatched users based on Inter-Cell Interference Coordination parameter.

In accompanying drawing, same or analogous Reference numeral represents same or analogous parts.

Embodiment

Below in conjunction with accompanying drawing, the present invention is described in further detail.

Fig. 1 illustrates a kind of system topological figure for realizing dispatched users based on Inter-Cell Interference Coordination parameter according to one aspect of the invention, comprising multiple base station 1 and a central control equipment 2.Wherein, central control equipment 2 by the interface in existing communication system between base station with base station as the LTEX2 interface in LTE or LTE-A communication system between base station with base station communicates with multiple base station 1, also communicate mutually by LTEX2 interface between multiple base station 1, the Inter-Cell Interference Coordination information that central control equipment 2 sends according to the base station 1 that receives, determines this Inter-Cell Interference Coordination parameter information corresponding to base station 1 and business load rate information; Meanwhile, corresponding described Inter-Cell Interference Coordination parameter information and business load rate information is sent to this base station 1.The Inter-Cell Interference Coordination parameter information corresponding to described Inter-Cell Interference Coordination information from central control equipment 2 transmission that base station 1 receives and business load rate information; And according to described business load rate information, finely tune described Inter-Cell Interference Coordination parameter information, to obtain interference coordination parameters information between corresponding Target cell; And then according to interference coordination parameters information between described Target cell, the user that it is served is dispatched.Central control equipment 2 manages the Inter-Cell Interference Coordination information of multiple base station 1 in a centralised manner.

At this, base station 1 refers in mobile communication system, be connected and fixed part and wireless portion, and by the equipment that aerial wireless transmission is connected with travelling carriage, it includes but not limited to as NodeB base station, eNB base station etc.

At this, central control equipment 2 refers to be responsible for collecting and processing IC IC information, and using adaptive algorithm for each base station 1 that it manage determining the equipment of ICIC parameter configuration and business load rate information, it can manage a large amount of base station 1, thus management presence of intercell interference information in a centralised manner.In specific implementation, central control equipment 2 can be base station, as eNB base station, also can be use to retain physical cell identifier (PCI, PhysicalCellID) value and have the eNB of pseudo-Radio Resource, or, can also be the independently network equipment.

Those skilled in the art will be understood that above-mentioned base station 1 and central control equipment 2 are only citing; other base stations that are existing or that may occur from now on or the network equipment are as being applicable to the present invention; also within scope should being included in, and this is contained at this with way of reference.

For simplicity's sake, coordinate realization to realize dispatched users based on Inter-Cell Interference Coordination parameter for a base station 1 with the central control equipment 2 of its correspondence to be below described.Those skilled in the art will be understood that, central control equipment 2 can carry out alternately with multiple base station 1 simultaneously, and the Inter-Cell Interference Coordination information that the multiple base stations 1 receiving its management send, for each base station 1, the Inter-Cell Interference Coordination information that central control equipment 2 all can send according to it, determine corresponding Inter-Cell Interference Coordination parameter information and business load rate information, and described Inter-Cell Interference Coordination parameter information and business load rate information are sent to this base station 1.

It is a kind of for realizing the base station 1 of dispatched users and the equipment schematic diagram of central control equipment 2 based on Inter-Cell Interference Coordination parameter that Fig. 2 illustrates according to one aspect of the invention, wherein, base station 1 comprises the first dispensing device 11, second receiving system 12, micromatic setting 13 and dispatching device 14, and central control equipment 2 comprises acquisition device 21, the 3rd determining device 22 and the second dispensing device 23.Particularly, the first dispensing device 11 of base station 1 sends to the central control equipment 2 of correspondence the Inter-Cell Interference Coordination information obtained after testing; Correspondingly, the acquisition device 21 of central control equipment 2 obtains the Inter-Cell Interference Coordination information of the multiple base stations about correspondence; 3rd determining device 22, according to described Inter-Cell Interference Coordination information, determines the Inter-Cell Interference Coordination parameter information described in each corresponding to base station and business load rate information; Second dispensing device 23 sends corresponding described Inter-Cell Interference Coordination parameter information and business load rate information to base station described in each; Correspondingly, the second receiving system 12 of base station 1 receives the Inter-Cell Interference Coordination parameter information corresponding to described Inter-Cell Interference Coordination information and the business load rate information of described central control equipment 2 transmission; Micromatic setting 13, according to described business load rate information, finely tunes described Inter-Cell Interference Coordination parameter information, to obtain interference coordination parameters information between corresponding Target cell; Dispatching device 14, according to interference coordination parameters information between described Target cell, is dispatched the user that described base station is served.

Particularly, first the first dispensing device 11 of base station 1 carries out detecting to obtain Inter-Cell Interference Coordination information.Preferably, described Inter-Cell Interference Coordination information comprises the current Physical Resource Block of the main interference information of adjacent cells of the community corresponding to described base station and this community and uses information.At this, described main interference information of adjacent cells refers to that the Cell Edge User interference in community (as the community that this base station is served) corresponding to this base station in the cell deployment of the communication system belonging to described base station meets the community of predetermined condition, wherein, described predetermined condition includes but not limited to that the Reference Signal Received Power (RSRP, ReferenceSignalReceivingPower) measured as Cell Edge User meets predetermined threshold.At this, described Physical Resource Block uses information to refer to current Physical Resource Block (PRB, PhysicalResourceBlock) in resource, which PRB has used and which PRB does not use, the index of concrete use Information Availability PRB represents, also can represent by bitmap form, and Physical Resource Block uses information can obtain from the equipment of base station 1 self.

At this, mode that the first dispensing device 11 obtains described Inter-Cell Interference Coordination information includes but not limited to as the one or more Cell Edge User in the community as described in first identifying corresponding to base station; According to the Reference Signal Received Power corresponding to Cover treatment community that described Cell Edge User is measured, from described coverage cell, determine the main interfered cell corresponding to this Cell Edge User; Merge to obtain described main interference information of adjacent cells to the main interfered cell of Cell Edge User described in each.

Particularly, first first dispensing device 11 identifies the one or more Cell Edge User in the community corresponding to described base station, as the event A3 based on each user report in community measures, the result that event A3 measures is less than predetermined threshold (its value is configurable) if the user of 6dB is as Cell Edge User, otherwise judges that this user belongs to Cell Center User.

Such as, suppose that communication system communicationsystem1 belonging to base station 1 is made up of 7 communities, cell deployment as shown in Figure 3, community corresponding to base station 1 is Cell1, multiple user is had as UE11 in Cell1, UE12, UE13, UE14 and UE15, suppose user UE11, the result that the event A3 that UE12 and UE13 reports to base station 1 measures is less than predetermined threshold as 6dB, and the result that the event A3 that user UE14 and UE15 reports to base station 1 measures is respectively 10dB and 15dB, be greater than predetermined threshold 6dB, then the first dispensing device 11 identifiable design user UE11 of base station 1, UE12 and UE13 belongs to Cell Edge User.

Those skilled in the art will be understood that the mode of the described Cell Edge User of above-mentioned identification is only citing; the mode of the described Cell Edge User of other identifications that are existing or that may occur from now on is as being applicable to the present invention; also within scope should being included in, and this is contained at this with way of reference.

Then, the Reference Signal Received Power corresponding to Cover treatment community that first dispensing device 11 is measured according to described Cell Edge User, the main interfered cell corresponding to this Cell Edge User is determined from described coverage cell, as the Reference Signal Received Power (RSRP, ReferenceSignalReceivingPower) corresponding to Cover treatment community measured according to Cell Edge User.Such as, connect example, for Cell Edge User UE11, suppose in cell deployment as shown in Figure 3, before community Cell1 covering UE11, Cell3, Cell2, Cell7 and Cell6 also cover UE11 in community, suppose that the RSRP that UE11 measures corresponding Cell1, Cell3, Cell2, Cell7 and Cell6 is respectively-50dBm ,-100dBm ,-98dBm ,-80dBm ,-105dBm, then corresponding RSRP can be less than predetermined threshold if the community of-90dBm is if Cell3, Cell2 and Cell6 are as the main interfered cell of UE11 by the first dispensing device 11, or, corresponding RSRP also can be belonged to the main interfered cell of community as UE11 of coverage strength rank 4 and later coverage strength rank thereof by the first dispensing device 11, namely corresponding according to coverage strength rank in prior art RSRP number range form, can obtain the main interfered cell that Cell3 (RSRP=-100dBm belongs to coverage strength rank 5), Cell2 (RSRP=-98dBm belongs to coverage strength rank 5) and Cell6 (RSRP=-105dBm belongs to coverage strength rank 6) are UE11, or, Reference Signal Received Power (the RSRP corresponding to Cover treatment community that Cell Edge User also can be measured by the first dispensing device 11, ReferenceSignalReceivingPower) descending is carried out, then before selecting from this descending, m is individual (at this, the quantity of m is configurable, as configurable m=2) community corresponding to RSRP be as the main interfered cell of this Cell Edge User, for UE11, first dispensing device 11 can will cover its community Cell1, Cell3, Cell2, the RSRP that Cell7 and Cell6 is corresponding carries out descending, the descending obtained is :-105dBm,-100dBm,-98dBm,-80dBm,-50dBm, then select community that in this descending, front 2 RSRP are corresponding as the main interfered cell of UE11, namely the main interfered cell obtaining UE11 is Cell6 and Cell3.For other Cell Edge User UE12 and UE13, similarly, the first dispensing device 11 can determine the main interfered cell that each Cell Edge User is corresponding.

Those skilled in the art will be understood that and above-mentionedly determine that the mode of the main interfered cell corresponding to Cell Edge User is only citing; the mode of other main interfered cells corresponding to determination Cell Edge User that is existing or that may occur from now on is as being applicable to the present invention; also within scope should being included in, and this is contained at this with way of reference.

Then, the main interfered cell of each Cell Edge User in the community corresponding to described base station merges by the first dispensing device 11, namely obtains the main interference information of adjacent cells of community corresponding to described base station.Such as, for base station 1, its Cell Edge User is UE11, UE12 and UE13, and the main interfered cell of UE11 is Cell6 and Cell3, suppose that the main interfered cell of UE12 is Cell2, the main interfered cell of UE13 is Cell4 and Cell5, then the first dispensing device 11 is by Cell Edge User UE11, the set of UE12 and UE13 main interfered cell is separately as the main interference adjacent cell of the community Cell1 corresponding to base station 1, namely the main interference information of adjacent cells dominateinterferenceneighborcells={Cell2 of Cell1 is obtained, Cell3, Cell4, Cell5, Cell6}.

At this, first dispensing device 11 is while determining described main interference information of adjacent cells, the Physical Resource Block that also can call base station 1 self provides uses information inquiry application programming interfaces (API), obtains the Physical Resource Block use information that the community (i.e. Cell1) of base station 1 correspondence is current.Such as, suppose that bandwidth=10MHz, the PRB quantity of communication system communicationsystem1 belonging to base station 1 is 50, the PRB index that current C ell1 uses is PRBindex1 to PRBindex20, and this PRB uses information to be expressed as bitmap for bitmap _cell1={ x _1,1, x _1,2... x _{1, n}... x _{1, N}, wherein, N represents the PRB total quantity of communication system communicationsystem1, x _{1, n}represent that the PRB of PRBindex=n uses information, when this PRB is used, x _{1, n}=1, when this PRB is used, x _{1, n}=0, namely the Physical Resource Block that Cell1 is current is used to the bitmap bitmap of information _cell1in (totally 50), x _1,1to x _1,20be 1, x _1,21to x _1,50be 0.

At this, for each community Cell _i, its current PRB uses information all can be expressed as the bitmap form shown in following formula (1):

bitmap _Celli＝{x _i,1,x _i,2,…x _i,n,…x _i,N}，n∈[1,N](1)

Wherein, x _i,nexpression index is that the PRB of n is used, then x _i,n=" 1 ", if the PRB that index is n is not used, x _i,n=" 0 ".

Then, first dispensing device 11 is by such as LTEX2 interface, central control equipment 2 to correspondence sends the Inter-Cell Interference Coordination information obtained after testing, the Physical Resource Block use information that main interference information of adjacent cells from the community corresponding to base station 1 to central control equipment 2 and this community as sent are current.Such as, the first dispensing device 11 can by the main interference information of adjacent cells dominateinterferenceneighborcells={Cell2 of Cell1, Cell3, Cell4, Cell5, Cell6}, and the Physical Resource Block use information bitmap that Cell1 is current _cell1={ x _1,1, x _1,2... x _{1, n}... x _{1, N}corresponding central control equipment 2 is sent to by LTEX2 interface.

At this, the present invention goes back the relative arrowband transmitted power (RNTP in easily extensible existing LTEX2 interface in Load Information Message (LOADINFORMATIONmessage), RelativeNarrowbandTxPower) information word (IE, InformationElement), send main interference information of adjacent cells and described Physical Resource Block use information, such as, the existing RNTPIE of the 9.2.12 part definition of extension standards TS36.423, the main interfered cell that " main interfered cell " IE carrys out indicating cell edge customer as increased in RNTPIE, mainly information of adjacent cells is disturbed to send, and increase " each PRB of RNTP " IE indicates described Physical Resource Block to use information, RNTPIE after expansion as shown in the following Table 1, wherein, overstriking font representation expansion:

Table 1

At this, in a particular embodiment, " main interfered cell " and " PRB in specific bandwidth uses " can use with existing " each PRB of RNTP " is collaborative.The use information that the physical identifier of main interfered cell can be written into " main interfered cell " IE, each PRB can be written into " each PRB of RNTP " IE, wherein, if PRB is used, in bitmap, correspondence position is set to " 1 ", if PRB is not used, in bitmap, correspondence position is set to " 0 ".

Correspondingly, the acquisition device 21 of central control equipment 2, by such as LTEX2 interface, obtains the Inter-Cell Interference Coordination information of the multiple base stations about correspondence.Such as, central control equipment 2 is by LTEX2 interface, the Inter-Cell Interference Coordination information that each base station receiving its management sends, as the base station 1 manage for it, interference coordination information is seen in the community that the acquisition device 21 of central control equipment 2 can receive positive 1 transmission of base, i.e. main interference information of adjacent cells dominateinterferenceneighborcells={Cell2, Cell3, Cell4, Cell5, Cell6}, and the Physical Resource Block use information bitmap that the Cell1 of base station 1 correspondence is current _cell1={ x _1,1, x _1,2... x _{1, n}... x _{1, N}, N=50, x _1,1to x _1,20be 1, x _1,21to x _1,50be 0.

3rd determining device 22, according to described Inter-Cell Interference Coordination information, determines the Inter-Cell Interference Coordination parameter information described in each corresponding to base station and business load rate information.Preferably, described Inter-Cell Interference Coordination information comprises the current Physical Resource Block of the main interference information of adjacent cells of the community described in each corresponding to base station and this community and uses information.Now corresponding Inter-Cell Interference Coordination parameter information can be restricted physical resources block mode information.At this, only determine that Inter-Cell Interference Coordination parameter information corresponding to base station 1 and business load rate information are described for the 3rd determining device 22:

Particularly, the 3rd determining device 22 can the main interfered cell information of community first corresponding to base station 1, determines the overall Neighboring Relation Table that this community is corresponding; Then, according to described overall Neighboring Relation Table, determine the restricted physical resources block district pattern information corresponding to base station 1, using as described Inter-Cell Interference Coordination parameter information; Then, then use information according to the current Physical Resource Block in the restricted physical resources block district of base station 1 under described restricted physical resources block district pattern information and the community corresponding to base station 1, determine described business load rate information.

Particularly, the 3rd determining device 22 can the main interfered cell information of community first corresponding to base station 1, determines the overall Neighboring Relation Table that this community is corresponding.At this, 3rd determining device 22 is when it determines the overall neighborhood region correlation chart of the community Cell1 corresponding to base station 1, need the main interfered cell information of each community in the cell deployment as shown in Figure 3 that communication system communicationsystem1 is corresponding belonging to base station 1, generate the overall neighborhood region correlation chart of community Cell1, suppose the main interfered cell information of each community (Cell1 to Cell7) in the cell deployment that central control equipment 2 obtains as shown in Figure 3 as shown in the following Table 2:

Cell1

Cell2

Cell3

Cell4

Cell5

Cell6

Cell7

Cell2

Cell1

Cell1

Cell1

Cell1

Cell1

Cell1

Cell3

Cell7

Cell2

Cell5

Cell6

Cell7

Cell2

Cell4

Cell4

Cell5

Cell6

Table 2

Wherein, the main interfered cell information of respective cell is shown in each list.As can be seen from Table 2, the main interference information of adjacent cells dominateinterferenceneighborcells={Cell2 of community Cell1, Cell3, Cell4, Cell5, Cell6}, the main interference information of adjacent cells={ Cell1 of community Cell2, Cell7}, etc., then the main interference adjacent cell in the main interference information of adjacent cells of each community can be added overall Neighboring Relation Table corresponding to this community by the 3rd determining device 22, if when this community is the main interference adjacent cell of another community, also this another community is added overall Neighboring Relation Table corresponding to this community, namely for community Cell _i, it mainly disturbs adjacent cell to be introduced into community Cell _ioverall Neighboring Relation Table as (Ψ), in addition, if community Cell _ibelong to community Cell _jmain interference adjacent cell time, community Cell _jalso community Cell is introduced into _ioverall Neighboring Relation Table (Ψ), finally, the 3rd determining device 22 can obtain the overall Neighboring Relation Table of each community (Cell1 to Cell7) in cell deployment as shown in Figure 3 as shown in the following Table 3:

Cell1

Cell2

Cell3

Cell4

Cell5

Cell6

Cell7

Cell2

Cell1

Cell1

Cell1

Cell1

Cell1

Cell1

Cell3

Cell3

Cell2

Cell3

Cell4

Cell5

Cell2

Cell4

Cell7

Cell4

Cell5

Cell6

Cell7

Cell6

Cell5

Cell6

Cell7

Table 3

Wherein, the overall Neighboring Relation Table of respective cell is shown in each list.As can be seen from Table 3, the overall Neighboring Relation Table globalneighborrelationtable (NRT)={ Cell2, Cell3, Cell4 of community Cell1, Cell5, Cell6, Cell7}, the overall Neighboring Relation Table={ Cell1 of community Cell2, Cell3, Cell7}, etc.

Then, the 3rd determining device 22, according to the overall Neighboring Relation Table of Cell1, determines the restricted physical resources block district pattern information corresponding to base station 1, using the Inter-Cell Interference Coordination parameter information as base station 1.At this, 3rd determining device 22 is when it determines the restricted physical resources block district's pattern information corresponding to base station 1, need the overall Neighboring Relation Table of each community in the cell deployment as shown in Figure 3 that communication system communicationsystem1 is corresponding belonging to base station 1, as applied vertex coloring algorithm (vertexcoloringalgorithm) of the prior art, determine the restricted physical resources block district pattern information of each base station.Before application vertex coloring algorithm, 3rd determining device 22 converts the NRT of all communities obtained to pattern I × I matrix G (for cell deployment as shown in Figure 3, matrix G is 7 × 7 matrixes), in transfer process, be input as row u and row v, if uv ∈ is E, row u and row v equals 1, otherwise equal 0, wherein, row u and row v represents community Cell _uand Cell _vbetween relation, if community Cell _vbe positioned at community Cell _uoverall Neighboring Relation Table in, can be expressed as uv ∈ E, the row u of input and row v equals 1, otherwise equals 0; Then, the input that 3rd determining device 22 will be written to the quantity M of the matrix G obtained and restricted physical resources block district pattern information as vertex coloring algorithm in file graph.txt (as shown in Figure 4), output is the restricted physical resources block district pattern information distributing to each community, final output coloring.txt file as shown in Figure 5, as seen from Figure 5, the restricted physical resources block district pattern information of community Cell1 (i.e. base station 1) is pattern 1, i.e. pattern _cell1the restricted physical resources block district pattern information of=1, community Cell2 (i.e. base station 2) is pattern _cell2=2, by that analogy, the restricted physical resources block district pattern information of community Cell7 (i.e. base station 7) is pattern _cell7=3.In the process obtaining coloring.txt, by coloring.txt with S={ (i, m), i ∈ [1, I] m=[1, M] } express, also i.e. Cell _im configuration in mode, final the possibility of result is attempted obtaining by several wheel, for each trial, G is a definite matrix, M be not less than 2 integer, and be increase, during as the first trial, can M=2 be set, when second time is attempted, coloring.txt file can M=3 be set, until can successfully export.

Those skilled in the art will be understood that and above-mentionedly determine that the mode of described restricted physical resources block district pattern information is only citing; described in other determinations that are existing or that may occur from now on, the mode of restricted physical resources block district pattern information is as being applicable to the present invention; also within scope should being included in, and this is contained at this with way of reference.

Then, the 3rd determining device 22 uses information according to the current Physical Resource Block in the restricted physical resources block district of base station 1 under described restricted physical resources block district pattern information and the community corresponding to base station 1 again, determines described business load rate information.

Such as, connect example, 3rd determining device 22 is after the restricted physical resources block district pattern information obtaining each base station as shown in Figure 5, can be the restricted physical resources block district pattern information expressed with bitmap by this results conversion, as obtained with the restricted physical resources block district pattern information expressed with bitmap shown in following table 4:

Table 4

As can be seen from Table 4, because the restricted physical resources block district pattern information of community Cell1 is pattern 1, also community Cell1 limited use PRBindex1 ~ PRBindex15 in mode 1 is just meaned, namely do not use PRBindex1 ~ PRBindex15, therefore community Cell1 is not scheduled on PRBindex1 ~ PRBindex15; The restricted physical resources block district pattern information of community Cell2 is pattern 2, and it is at pattern 2 times limited use PRBindex16 ~ PRBindex30; The restricted physical resources block district pattern information of community Cell3 is mode 3, it is limited use PRBindex31 ~ PRBindex45 under mode 3, similarly, for community Cell4 to Cell7, according to respective restricted physical resources block district pattern information, the PRB information of the corresponding limited use under restricted physical resources block mode information can be obtained from above table 4.

Then, the Physical Resource Block use information that 3rd determining device 22 is current with the community corresponding to each base station according to the restricted physical resources block district of each base station under described restricted physical resources block district pattern information again, determine described business load rate information, as business load rate information as described in calculating according to following formula (2):

$\begin{array}{ccc}\mathrm{traffic}\_\mathrm{load}\_\mathrm{ratio}& \mathrm{for}& {\mathrm{Cell}}_i\end{array}=\frac{\underset{j\∈\mathrm{\Ψ}}{\mathrm{mean}}\left(\underset{n\∈\mathrm{\Ω}}{\mathrm{\Σ}}{\mathrm{PRB}}_{j,n}\right)}{\underset{j\∈\mathrm{\Ψ}}{\mathrm{mean}}\left(\underset{n\∈\mathrm{\Ω}}{\mathrm{\Σ}}{\mathrm{PRB}}_{j,n}\right)+\underset{n\∈\stackrel{\‾}{\mathrm{\Ω}}}{\mathrm{\Σ}}{\mathrm{PRB}}_{i,n}}---\left(2\right)$

Wherein, 1) traffic_load_ratioforCell _irepresent community Cell _ithe business load rate information of (i.e. base station i); 2) if index is that the PRB of n is at Cell _jmiddlely to be used, then PRB _j,n=1, otherwise be 0; 3) Ψ is community Cell _ioverall Neighboring Relation Table, Ω represents Cell _ioverall Neighboring Relation Table Zhong Ge community at community Cell _ione group of PRB that restricted physical resources block district under restricted physical resources block district pattern information is corresponding, i.e. point subrepresentation community Cell of formula (2) _ioverall Neighboring Relation Table Zhong Ge community at community Cell _irestricted physical resources block district pattern information under one group of PRB corresponding to restricted physical resources block district on use amount average, herein be on average to Cell _iquantity average of NRT small area; 4) represent Cell in whole bandwidth _ione group of PRB that untethered Physical Resource Block district under its restricted physical resources block district pattern information is corresponding, namely the denominator of formula (2) is two sums, and wherein Section 1 is molecule, and Section 2 is community Cell _ithe use information of one group of PRB that untethered Physical Resource Block district is corresponding under its restricted physical resources block district pattern information.

Such as, for community Cell1, its overall Neighboring Relation Table globalneighborrelationtable (NRT)={ Cell2, Cell3, Cell4, Cell5, Cell6, Cell7}, i.e. Ψ={ Cell2, Cell3, Cell4, Cell5, Cell6, Cell7}, known according to above table 4, in mode 1, Cell2 to Cell7 all uses PRBindex1 ~ PRBindex15, therefore, and now formula (2) Middle molecule acquisition device 21 because of central control equipment 2 receives the current Physical Resource Block of Cell1 that base station 1 sends and uses the bitmap of information to be bitmap _cell1={ x _1,1, x _1,2... x _{1, n}... x _{1, N}, N=50, x _1,1to x _1,20be 1, x _1,21to x _1,50be 0, namely Cell1 is in whole bandwidth in (totally 50 PRB), because of limited use (namely prohibitting the use) PRBindex1 ~ PRBindex15, in fact employs PRBindex16 ~ PRBindex20, therefore, the denominator Section 2 of formula (2) then for Cell1, the 3rd determining device 22 can calculate traffic_load_ratioforCell ₁=15/ (15+5)=0.75.

Second dispensing device 23 is by LTEX2 interface, corresponding described Inter-Cell Interference Coordination parameter information and business load rate information is sent to base station described in each, as sent Inter-Cell Interference Coordination parameter information as described in correspondence to base station 1, i.e. the restricted physical resources block district pattern information pattern of base station 1 _cell1=1, and business load rate information traffic_load_ratioforCell ₁=0.75.

At this, when second dispensing device 23 sends described Inter-Cell Interference Coordination parameter information and the business load rate information of described correspondence, also based on the information word corresponding respectively to described restricted physical resources block district's pattern information and described business load rate information in expansion X2 interface, the bitmap corresponding to described restricted physical resources block district pattern information and described business load rate information can be sent to corresponding described base station.Such as, can by its restricted physical resources block district pattern information (i.e. pattern for base station 1, second dispensing device 23 _cell1=1) " each PRB of RNTP " IE in above table 1 is write to be similar to the bitmap form shown in above formula (1), with by pattern _cell1=1 sends to base station 1, and wherein, if PRB is limited, in bitmap, the position of this PRB is set to " 1 ", if PRB can use, in bitmap, the position of this PRB is set to " 0 ", thus base station 1 at pattern _cell1bitmap under=1 is bitmap _patternCell1=1={y _1,1, y _1,2... y _{1, n}... y _{1, N}, N=50, y _1,1to y _1,15be 1, y _1,16to y _1,50be 0; Meanwhile, the second dispensing device 23 can by the business load rate information traffic_load_ratioforCell of base station 1 ₁" PRB use " in specific bandwidth IE in the above table 1 of=0.75 write, with by traffic_load_ratioforCell ₁=0.75 sends to base station 1, wherein, " specific bandwidth " item in " PRB in specific bandwidth uses " IE equals the restricted physical resources block district pattern information being configured to base station 1, and " PRB usage rate " item in " PRB in specific bandwidth uses " IE equals business load rate information and is multiplied by 100.

At this, for each community Cell _i, its PRB under restricted physical resources block district pattern information uses information all can be expressed as the bitmap form shown in following formula (3):

bitmap _patternCelli＝{y _i,1,y _i,2,…y _i,n,…y _i,N}，n∈[1,N](3)

Wherein, y _i,nrepresent, if the PRB that index is n is limited, then y _i,n=" 1 ", otherwise y _i,n=" 0 ".

Correspondingly, the second receiving system 12 of base station 1, by such as LTEX2 interface, receives the Inter-Cell Interference Coordination parameter information corresponding to described Inter-Cell Interference Coordination information and the business load rate information of described central control equipment 2 transmission.Such as, connect example, base station 1 receives the base station 1 of central control equipment 2 transmission at pattern _cell1bitmap bitmap under=1 _{patternCell1=1}={ y _1,1, y _1,2... y _{1, n}... y _{1, N}, N=50, y _1,1to y _1,15be 1, y _1,16to y _1,50be 0, and the traffic_load_ratioforCell of base station 1 ₁=0.75.

Micromatic setting 13, according to described business load rate information, finely tunes described Inter-Cell Interference Coordination parameter information, to obtain interference coordination parameters information between corresponding Target cell.At this, micromatic setting 13 is before the described Inter-Cell Interference Coordination parameter information of fine setting, and the bitmap corresponding to the described restricted physical resources block district pattern information first sent according to described central control equipment, determines corresponding restricted physical resources block rate information; If described restricted physical resources block rate information is greater than described business load rate information and described business load rate information can be used, adjust described bitmap, thus realize fine setting, and obtain interference coordination parameters information between corresponding Target cell.

Such as, connect example, then shown in the micromatic setting 13 definable restricted physical resources following formula of block rate information (4):

$\mathrm{restricted}\_\mathrm{PRB}\_\mathrm{ratio}\_\mathrm{celli}=\frac{\underset{n\∈[1,N]}{\mathrm{\Σ}}{y}_{i,n}}{N}---\left(4\right)$

For base station 1, it is limited at PRBindex1 ~ PRBindex15, y _1,1to y _1,15be 1, y _1,16to y _1,50be 0, therefore, restricted_PRB_ratio_cell1=15/50=0.3, because of restricted_PRB_ratio_cell1<traffic_load_rat ioforCell ₁, then micromatic setting 13 is not finely tuned described Inter-Cell Interference Coordination parameter information, and the restricted physical resources block district pattern information pattern will received from central control equipment 2 _cell1=1 as base station 1 Target cell between interference coordination parameters information.

For another example, on the other case, if micromatic setting 13 obtains the restricted_PRB_ratio_cell1>traffic_load_ra tioforCell of base station 1 ₁, and traffic_load_ratioforCell ₁available, then the restricted physical resources block district pattern information pattern of micromatic setting 13 adjustable base station 1 _cell1=1, for each base station (i.e. community Cell _i), micromatic setting 13 can represent with the bitmap form shown in following formula (5) obtaining final restricted physical resources block district pattern information after the bitmap adjustment corresponding to its restricted physical resources block mode information, and it can be used as interference coordination parameters information between described Target cell:

Finalbitmap _patternCelli＝{z _i,1,z _i,2,…z _i,n,…z _i,N}(5)

Wherein, if n ∈ is Θ, z _i,n=1; Otherwise, z _i,n=0,

Size_of_ Ω is the size of Ω, and Θ is the final restricted physical resources block district determined, it is the subset of Ω, and Ω represents Cell _ioverall Neighboring Relation Table Zhong Ge community at community Cell _ione group of PRB that restricted physical resources block district under restricted physical resources block district pattern information is corresponding.

Such as, for base station 1 (i.e. Cell1), traffic_load_ratioforCell ₁× N=0.75 × 50=37.5, base station 1 is limited on PRBindex1 ~ PRBindex15, and therefore, the size of Ω is 15, then the size of Θ is 15, therefore, the Finalbitmap of base station 1 _patternCell1={ z _1,1, z _1,2... z _{1, n}... z _{1, N}, N=50, z _1,1to z _1,15be 1, z _1,16to z _1,50be 0.For another example, if the size obtaining Θ is 10, then the Finalbitmap of base station 1 _patternCell1={ z _1,1, z _1,2... z _{1, n}... z _{1, N}, N=50, z _1,1to z _1,10be 1, z _1,11to z _1,50be 0.

At this, the present invention, by according to described business load rate information, finely tunes described Inter-Cell Interference Coordination parameter information, is intended to consider the business load balance between different districts.

Dispatching device 14 is according to interference coordination parameters information between described Target cell, the user that described base station is served is dispatched, as dispatched at the PRBindex of untethered user, or, can also in conjunction with predetermined scheduling strategy, Cell Edge User is only dispatched on the PRBindex of untethered, and for Cell Center User, except dispatching on the PRBindex of untethered, power can also be reduced on limited PRB to dispatch user, namely on limited PRB, carry out transfer of data.

At this, the present invention reduces power on limited PRB to dispatch user, has re-used limited PRB, has improve the performance of community average throughput, therefore, between community average throughput and cell edge throughput, reaches good balance.

Such as, for base station 1, suppose the restricted physical resources block district pattern information pattern that the second receiving system 12 receives from central control equipment 2 by micromatic setting 13 _cell1=1 as base station 1 Target cell between interference coordination parameters information, then dispatching device 14 can on PRBindex16 ~ PRBindex50 to its service user dispatch.

Constant work between each device of base station 1 and central control equipment 2.Particularly, the first dispensing device 11 of base station 1 continues to send to the central control equipment 2 of correspondence the Inter-Cell Interference Coordination information obtained after testing; Correspondingly, the acquisition device 21 of central control equipment 2 continues to obtain the Inter-Cell Interference Coordination information about multiple base stations of correspondence; 3rd determining device 22, according to described Inter-Cell Interference Coordination information, determines the Inter-Cell Interference Coordination parameter information described in each corresponding to base station and business load rate information; Second dispensing device 23 continues to send corresponding described Inter-Cell Interference Coordination parameter information and business load rate information to base station described in each; Correspondingly, the Inter-Cell Interference Coordination parameter information corresponding to described Inter-Cell Interference Coordination information that central control equipment 2 described in the second receiving system 12 continuous reception of base station 1 sends and business load rate information; Micromatic setting 13 continues according to described business load rate information, finely tunes described Inter-Cell Interference Coordination parameter information, to obtain interference coordination parameters information between corresponding Target cell; Dispatching device 14 continues according to interference coordination parameters information between described Target cell, dispatches the user that described base station is served.At this, those skilled in the art will be understood that " continuing " refers to the acquisition of interference coordination parameters information between the transmission of constantly carrying out Inter-Cell Interference Coordination information between base station 1 and each device of central control equipment 2 respectively and reception, the transmission of Inter-Cell Interference Coordination parameter information and business load rate information and reception, Target cell, the scheduling to user, until base station 1 stops sending Inter-Cell Interference Coordination information to central control equipment 2 in a long time.

Preferably, use information when described Inter-Cell Interference Coordination information comprises the current Physical Resource Block of the main interference information of adjacent cells of the community corresponding to described base station and this community, base station 1 also comprises recognition device (not shown), the first determining device (not shown) and merges device (not shown).Particularly, the one or more Cell Edge User in the community described in recognition device identification corresponding to base station; The Reference Signal Received Power corresponding to Cover treatment community that first determining device is measured according to described Cell Edge User, determines the main interfered cell corresponding to this Cell Edge User from described coverage cell; Merge the main interfered cell of device to Cell Edge User described in each to merge to obtain described main interference information of adjacent cells.

At this, with aforementioned first dispensing device 11, the mode of Cell Edge User described in recognition device identification identifies that the mode of described Cell Edge User is identical or substantially identical, for simplicity's sake, therefore do not repeat them here, and be contained in this by reference.

At this, the first determining device determines with aforementioned first dispensing device 11, the mode of described main interfered cell determines that the mode of described main interfered cell is identical or substantially identical, for simplicity's sake, therefore does not repeat them here, and is contained in this by reference.

At this, merging the main interfered cell of device to Cell Edge User described in each, to merge to obtain the mode that described main interference information of adjacent cells and the aforementioned main interfered cell of the first dispensing device 11 to Cell Edge User described in each merge to obtain described main interference information of adjacent cells identical or substantially identical, for simplicity's sake, therefore do not repeat them here, and be contained in this by reference.

At this, in a particular embodiment, it will be appreciated by those skilled in the art that recognition device, the first determining device, merging device and the first dispensing device 11 can integrate, also can be separate module.

More preferably, if described Inter-Cell Interference Coordination parameter information comprises the restricted physical resources block district pattern information corresponding to described base station, it is (not shown that base station 1 also comprises the second determining device.Particularly, the bitmap corresponding to the described restricted physical resources block district pattern information that the second determining device sends according to described central control equipment, determines corresponding restricted physical resources block rate information; Wherein, if described restricted physical resources block rate information is greater than described business load rate information and described business load rate information can be used, micromatic setting 13 adjusts described bitmap, to finely tune described Inter-Cell Interference Coordination parameter information, obtains interference coordination parameters information between corresponding Target cell.

At this, second determining device determines that the mode of described restricted physical resources block rate information and aforementioned micromatic setting 13 determine that the mode of described restricted physical resources block rate information is identical or substantially identical, for simplicity's sake, therefore do not repeat them here, and be contained in this by reference.

At this, the mode that micromatic setting 13 adjusts described bitmap is identical with the mode that aforementioned micromatic setting 13 adjusts described bitmap or substantially identical, for simplicity's sake, therefore does not repeat them here, and is contained in this by reference.

Preferably, for central control equipment 2, if state Inter-Cell Interference Coordination information to comprise the current Physical Resource Block of the main interference information of adjacent cells of the community described in each corresponding to base station and this community and use information, the 3rd determining device 22 comprises the first determining unit (not shown), the second determining unit (not shown) and the 3rd determining unit (not shown).Particularly, the first determining unit, according to the main interfered cell information of the community described in each corresponding to base station, determines the overall Neighboring Relation Table that this community is corresponding; Second determining unit, according to described overall Neighboring Relation Table, determines the restricted physical resources block district pattern information described in each corresponding to base station, using as described Inter-Cell Interference Coordination parameter information; The Physical Resource Block use information that 3rd determining unit is current with the community corresponding to base station described in each according to the restricted physical resources block district of base station described in each under described restricted physical resources block district pattern information, determines described business load rate information; Wherein, bitmap corresponding to described restricted physical resources block district pattern information and described business load rate information, based on the information word corresponding respectively to described restricted physical resources block district's pattern information and described business load rate information in expansion X2 interface, are sent to corresponding described base station by the second dispensing device 23.

At this, first determining unit determines with aforementioned 3rd determining device 22, the mode of described overall Neighboring Relation Table determines that the mode of described overall Neighboring Relation Table is identical or substantially identical, for simplicity's sake, therefore do not repeat them here, and be contained in this by reference.

At this, second determining unit determines that the mode of described restricted physical resources block district pattern information and aforementioned 3rd determining device 22 determine that the mode of described restricted physical resources block district pattern information is identical or substantially identical, for simplicity's sake, therefore do not repeat them here, and be contained in this by reference.

At this, 3rd determining unit determines with aforementioned 3rd determining device 22, the mode of described business load rate information determines that the mode of described business load rate information is identical or substantially identical, for simplicity's sake, therefore do not repeat them here, and be contained in this by reference.

At this, the mode that second dispensing device 23 sends bitmap corresponding to described restricted physical resources block district pattern information and described business load rate information mode based on the information word corresponding respectively to described restricted physical resources block district's pattern information and described business load rate information in expansion X2 interface and aforementioned second dispensing device 23 send bitmap corresponding to described restricted physical resources block district pattern information and described business load rate information is identical or substantially identical, for simplicity's sake, therefore do not repeat them here, and be contained in this by reference.

Preferably, for eICIC, central control equipment 2 using the Inter-Cell Interference Coordination parameter information of ABS density as correspondence, and can represent with following formula (6):

$\mathrm{ABS}\_\mathrm{density}=\frac{\underset{j\&Element;J}{\mathrm{\&Sigma;}}{\mathrm{PRB}}_{\mathrm{ABS}}^{\mathrm{Victim}\_\mathrm{UEs}\_\mathrm{of}\_{\mathrm{Micro}}_j}}{\underset{j\&Element;J}{\mathrm{\&Sigma;}}{\mathrm{PRB}}_{\mathrm{ABS}}^{\mathrm{Victim}\_\mathrm{UEs}\_\mathrm{of}\_{\mathrm{Micro}}_j}+\frac{J}{M}\underset{m\&Element;M}{\mathrm{\&Sigma;}}{\mathrm{PRB}}^{{\mathrm{Macro}}_m}}---\left(6\right)$

Wherein, formula (6) Middle molecule represents the use amount of the Cell Edge User PRB in ABS subframe in all Microcells; Denominator is two summations, and wherein last item is molecule, and latter one is the use amount of all macrocell user PRB in Non-ABS (non-ABS) subframe, and J represents Microcell number in network, and M represents macrocell number in network.

At this, for eICIC, base station 1 does not need to finely tune it, because obtaining according to traffic load level when central control equipment 2 determines ABSdensity according to formula (6).

ABS suppressing method based on eICIC can be applicable to relax the interference between macrocell to small cell.In ABS subframe, PDSCH and the PDCCH channel of macrocell is suppressed, mean UE can not in ABS subframe in be scheduled, and in small cell, cell edge UE can not in non-ABS subframe in be scheduled.Dynamic eICIC scheme can bring the cell edge throughput gain of about 30%, and the community average throughput flow gain of nearly 20%.

At this, those skilled in the art will be understood that, but ICIC/eICIC parameter such as business load rate information, restricted physical resources block mode information, abs mode can be updated in each update cycle, thus in adaptation real system, the change of continuous print business load and user change respectively.Wherein, the update cycle is configurable, as being configured to every 10 seconds.

The present invention can significantly improve cell-edge performance and not affect network throughput, and traditional static state and semi-static ICIC scheme, the lifting of cell-edge performance with the loss of community average throughput for cost.

By system simulation, static ICIC such as reverse ICIC in cell edge throughput, can show the gain of about 20% relative to the scheme that channeling is 1, but has about 30% loss in the average throughput of community; And be the scheme of 1 compared to channeling, concentrated ICIC scheme of the present invention can obtain the gain of about 30% at cell edge throughput, and does not affect network throughput.

In addition, determine compared to the existing ICIC of realization parameter and dispatched users but there is high backhaul signaling defect and minizone schedule information exchange the concentrated ICIC scheme with delay in central controller device, the present invention realizes determining ICIC parameter information in common control equipment, realize real user scheduling in a base station, considerably improve cell throughout, especially the throughput of Cell Edge User, and, present invention accomplishes the tight timing requirements needing dispatched users.

Fig. 6 illustrates that base station according to a further aspect of the present invention and central control equipment coordinate and realizes a kind of method flow diagram for realizing dispatched users based on Inter-Cell Interference Coordination parameter.

Particularly, in step sl, base station 1 sends to the central control equipment 2 of correspondence the Inter-Cell Interference Coordination information obtained after testing; Correspondingly, central control equipment 2 obtains the Inter-Cell Interference Coordination information of the multiple base stations about correspondence; In step s 2, central control equipment 2, according to described Inter-Cell Interference Coordination information, determines the Inter-Cell Interference Coordination parameter information described in each corresponding to base station and business load rate information; In step s3, central control equipment 2 sends corresponding described Inter-Cell Interference Coordination parameter information and business load rate information to base station described in each; Correspondingly, base station 1 receives the Inter-Cell Interference Coordination parameter information corresponding to described Inter-Cell Interference Coordination information and the business load rate information of described central control equipment 2 transmission; In step s 4 which, described Inter-Cell Interference Coordination parameter information, according to described business load rate information, is finely tuned in base station 1, to obtain interference coordination parameters information between corresponding Target cell; In step s 5, base station 1, according to interference coordination parameters information between described Target cell, is dispatched the user that described base station is served.

Particularly, in step sl, first base station 1 carries out detecting to obtain Inter-Cell Interference Coordination information.Preferably, described Inter-Cell Interference Coordination information comprises the current Physical Resource Block of the main interference information of adjacent cells of the community corresponding to described base station and this community and uses information.At this, described main interference information of adjacent cells refers to that the Cell Edge User interference in community (as the community that this base station is served) corresponding to this base station in the cell deployment of the communication system belonging to described base station meets the community of predetermined condition, wherein, described predetermined condition includes but not limited to that the Reference Signal Received Power (RSRP, ReferenceSignalReceivingPower) measured as Cell Edge User meets predetermined threshold.At this, described Physical Resource Block uses information to refer to current Physical Resource Block (PRB, PhysicalResourceBlock) in resource, which PRB has used and which PRB does not use, the index of concrete use Information Availability PRB represents, also can represent by bitmap form, and Physical Resource Block uses information can obtain from the equipment of base station 1 self.

At this, in step sl, base station 1 obtains described Inter-Cell Interference Coordination information mode includes but not limited to as the one or more Cell Edge User in the community as described in first identifying corresponding to base station; According to the Reference Signal Received Power corresponding to Cover treatment community that described Cell Edge User is measured, from described coverage cell, determine the main interfered cell corresponding to this Cell Edge User; Merge to obtain described main interference information of adjacent cells to the main interfered cell of Cell Edge User described in each.

Particularly, in step sl, first base station 1 identifies the one or more Cell Edge User in the community corresponding to described base station, as the event A3 based on each user report in community measures, the result that event A3 measures is less than predetermined threshold (its value is configurable) if the user of 6dB is as Cell Edge User, otherwise judges that this user belongs to Cell Center User.

Such as, suppose that communication system communicationsystem1 belonging to base station 1 is made up of 7 communities, cell deployment as shown in Figure 3, community corresponding to base station 1 is Cell1, multiple user is had as UE11 in Cell1, UE12, UE13, UE14 and UE15, suppose user UE11, the result that the event A3 that UE12 and UE13 reports to base station 1 measures is less than predetermined threshold as 6dB, and the result that the event A3 that user UE14 and UE15 reports to base station 1 measures is respectively 10dB and 15dB, be greater than predetermined threshold 6dB, then base station 1 in step sl, base station 1 identifiable design user UE11, UE12 and UE13 belongs to Cell Edge User.

Those skilled in the art will be understood that the mode of the described Cell Edge User of above-mentioned identification is only citing; the mode of the described Cell Edge User of other identifications that are existing or that may occur from now on is as being applicable to the present invention; also within scope should being included in, and this is contained at this with way of reference.

Then, in step sl, the Reference Signal Received Power corresponding to Cover treatment community that base station 1 is measured according to described Cell Edge User, the main interfered cell corresponding to this Cell Edge User is determined from described coverage cell, as the Reference Signal Received Power (RSRP, ReferenceSignalReceivingPower) corresponding to Cover treatment community measured according to Cell Edge User.Such as, connect example, for Cell Edge User UE11, suppose in cell deployment as shown in Figure 3, before community Cell1 covering UE11, Cell3, Cell2, Cell7 and Cell6 also cover UE11 in community, suppose that the RSRP that UE11 measures corresponding Cell1, Cell3, Cell2, Cell7 and Cell6 is respectively-50dBm ,-100dBm ,-98dBm ,-80dBm ,-105dBm, then in step sl, corresponding RSRP can be less than predetermined threshold if the community of-90dBm is if Cell3, Cell2 and Cell6 are as the main interfered cell of UE11 by base station 1, or, in step sl, corresponding RSRP also can be belonged to the main interfered cell of community as UE11 of coverage strength rank 4 and later coverage strength rank thereof by base station 1, namely corresponding according to coverage strength rank in prior art RSRP number range form, can obtain the main interfered cell that Cell3 (RSRP=-100dBm belongs to coverage strength rank 5), Cell2 (RSRP=-98dBm belongs to coverage strength rank 5) and Cell6 (RSRP=-105dBm belongs to coverage strength rank 6) are UE11, or, in step sl, Reference Signal Received Power (the RSRP corresponding to Cover treatment community that Cell Edge User also can be measured by base station 1, ReferenceSignalReceivingPower) descending is carried out, then before selecting from this descending, m is individual (at this, the quantity of m is configurable, as configurable m=2) community corresponding to RSRP be as the main interfered cell of this Cell Edge User, for UE11, in step sl, base station 1 can will cover its community Cell1, Cell3, Cell2, the RSRP that Cell7 and Cell6 is corresponding carries out descending, the descending obtained is :-105dBm,-100dBm,-98dBm,-80dBm,-50dBm, then select community that in this descending, front 2 RSRP are corresponding as the main interfered cell of UE11, namely the main interfered cell obtaining UE11 is Cell6 and Cell3.For other Cell Edge User UE12 and UE13, similarly, in step sl, the main interfered cell that each Cell Edge User is corresponding can be determined in base station 1.

Those skilled in the art will be understood that and above-mentionedly determine that the mode of the main interfered cell corresponding to Cell Edge User is only citing; the mode of other main interfered cells corresponding to determination Cell Edge User that is existing or that may occur from now on is as being applicable to the present invention; also within scope should being included in, and this is contained at this with way of reference.

Then, in step sl, the main interfered cell of each Cell Edge User in the community corresponding to described base station merges by base station 1, namely obtains the main interference information of adjacent cells of community corresponding to described base station.Such as, for base station 1, its Cell Edge User is UE11, UE12 and UE13, and the main interfered cell of UE11 is Cell6 and Cell3, suppose that the main interfered cell of UE12 is Cell2, the main interfered cell of UE13 is Cell4 and Cell5, then in step sl, base station 1 is by Cell Edge User UE11, the set of UE12 and UE13 main interfered cell is separately as the main interference adjacent cell of the community Cell1 corresponding to base station 1, namely the main interference information of adjacent cells dominateinterferenceneighborcells={Cell2 of Cell1 is obtained, Cell3, Cell4, Cell5, Cell6}.

At this, in step sl, base station 1 is while determining described main interference information of adjacent cells, the Physical Resource Block that also can call base station 1 self provides uses information inquiry application programming interfaces (API), obtains the Physical Resource Block use information that the community (i.e. Cell1) of base station 1 correspondence is current.Such as, suppose that bandwidth=10MHz, the PRB quantity of communication system communicationsystem1 belonging to base station 1 is 50, the PRB index that current C ell1 uses is PRBindex1 to PRBindex20, and this PRB uses information to be expressed as bitmap for bitmap _cell1={ x _1,1, x _1,2... x _{1, n}... x _{1, N}, wherein, N represents the PRB total quantity of communication system communicationsystem1, x _{1, n}represent that the PRB of PRBindex=n uses information, when this PRB is used, x _{1, n}=1, when this PRB is used, x _{1, n}=0, namely the Physical Resource Block that Cell1 is current is used to the bitmap bitmap of information _cell1in (totally 50), x _1,1to x _1,20be 1, x _1,21to x _1,50be 0.

At this, for each community Cell _i, its current PRB uses information all can be expressed as the bitmap form shown in following formula (7):

bitmap _Celli＝{x _i,1,x _i,2,…x _i,n,…x _i,N}，n∈[1,N](7)

Wherein, x _i,nexpression index is that the PRB of n is used, then x _i,n=" 1 ", if the PRB that index is n is not used, x _i,n=" 0 ".

Then, in step sl, base station 1 is by such as LTEX2 interface, central control equipment 2 to correspondence sends the Inter-Cell Interference Coordination information obtained after testing, the Physical Resource Block use information that main interference information of adjacent cells from the community corresponding to base station 1 to central control equipment 2 and this community as sent are current.Such as, in step sl, base station 1 can by the main interference information of adjacent cells dominateinterferenceneighborcells={Cell2 of Cell1, Cell3, Cell4, Cell5, Cell6}, and the Physical Resource Block use information bitmap that Cell1 is current _cell1={ x _1,1, x _1,2... x _{1, n}... x _{1, N}corresponding central control equipment 2 is sent to by LTEX2 interface.

At this, the present invention goes back the relative arrowband transmitted power (RNTP in easily extensible existing LTEX2 interface in Load Information Message (LOADINFORMATIONmessage), RelativeNarrowbandTxPower) information word (IE, InformationElement), send main interference information of adjacent cells and described Physical Resource Block use information, such as, the existing RNTPIE of the 9.2.12 part definition of extension standards TS36.423, the main interfered cell that " main interfered cell " IE carrys out indicating cell edge customer as increased in RNTPIE, mainly information of adjacent cells is disturbed to send, and increase " each PRB of RNTP " IE indicates described Physical Resource Block to use information, RNTPIE after expansion as shown in the following Table 5, wherein, overstriking font representation expansion:

Table 5

At this, in a particular embodiment, " main interfered cell " and " PRB in specific bandwidth uses " can use with existing " each PRB of RNTP " is collaborative.The use information that the physical identifier of main interfered cell can be written into " main interfered cell " IE, each PRB can be written into " each PRB of RNTP " IE, wherein, if PRB is used, in bitmap, correspondence position is set to " 1 ", if PRB is not used, in bitmap, correspondence position is set to " 0 ".

Correspondingly, central control equipment 2, by such as LTEX2 interface, obtains the Inter-Cell Interference Coordination information of the multiple base stations about correspondence.Such as, central control equipment 2 is by LTEX2 interface, the Inter-Cell Interference Coordination information that each base station receiving its management sends, as the base station 1 managed for it, interference coordination information is seen in the community that central control equipment 2 can receive positive 1 transmission of base in step sl, i.e. main interference information of adjacent cells dominateinterferenceneighborcells={Cell2, Cell3, Cell4, Cell5, Cell6}, and the Physical Resource Block use information bitmap that the Cell1 of base station 1 correspondence is current _cell1={ x _1,1, x _1,2... x _{1, n}... x _{1, N}, N=50, x _1,1to x _1,20be 1, x _1,21to x _1,50be 0.

In step s 2, central control equipment 2, according to described Inter-Cell Interference Coordination information, determines the Inter-Cell Interference Coordination parameter information described in each corresponding to base station and business load rate information.Preferably, described Inter-Cell Interference Coordination information comprises the current Physical Resource Block of the main interference information of adjacent cells of the community described in each corresponding to base station and this community and uses information.Now corresponding Inter-Cell Interference Coordination parameter information can be restricted physical resources block mode information.At this, only with in step s 2, central control equipment 2 determines that Inter-Cell Interference Coordination parameter information corresponding to base station 1 and business load rate information are that example is described:

Particularly, in step s 2, central control equipment 2 can the main interfered cell information of community first corresponding to base station 1, determines the overall Neighboring Relation Table that this community is corresponding; Then, according to described overall Neighboring Relation Table, determine the restricted physical resources block district pattern information corresponding to base station 1, using as described Inter-Cell Interference Coordination parameter information; Then, then use information according to the current Physical Resource Block in the restricted physical resources block district of base station 1 under described restricted physical resources block district pattern information and the community corresponding to base station 1, determine described business load rate information.

Particularly, in step s 2, central control equipment 2 can the main interfered cell information of community first corresponding to base station 1, determines the overall Neighboring Relation Table that this community is corresponding.At this, in step s 2, central control equipment 2 is when it determines the overall neighborhood region correlation chart of the community Cell1 corresponding to base station 1, need the main interfered cell information of each community in the cell deployment as shown in Figure 3 that communication system communicationsystem1 is corresponding belonging to base station 1, generate the overall neighborhood region correlation chart of community Cell1, suppose the main interfered cell information of each community (Cell1 to Cell7) in the cell deployment that central control equipment 2 obtains as shown in Figure 3 as shown in the following Table 6:

Cell1

Cell2

Cell3

Cell4

Cell5

Cell6

Cell7

Cell2

Cell1

Cell1

Cell1

Cell1

Cell1

Cell1

Cell3

Cell7

Cell2

Cell5

Cell6

Cell7

Cell2

Cell4

Cell4

Cell5

Cell6

Table 6

Wherein, the main interfered cell information of respective cell is shown in each list.As can be seen from Table 6, the main interference information of adjacent cells dominateinterferenceneighborcells={Cell2 of community Cell1, Cell3, Cell4, Cell5, Cell6}, the main interference information of adjacent cells={ Cell1 of community Cell2, Cell7}, etc., then in step s 2, main interference adjacent cell in the main interference information of adjacent cells of each community can be added overall Neighboring Relation Table corresponding to this community by central control equipment 2, if when this community is the main interference adjacent cell of another community, also this another community is added overall Neighboring Relation Table corresponding to this community, namely for community Cell _i, it mainly disturbs adjacent cell to be introduced into community Cell _ioverall Neighboring Relation Table as (Ψ), in addition, if community Cell _ibelong to community Cell _jmain interference adjacent cell time, community Cell _jalso community Cell is introduced into _ioverall Neighboring Relation Table (Ψ), finally, in step s 2, central control equipment 2 can obtain the overall Neighboring Relation Table of each community (Cell1 to Cell7) in cell deployment as shown in Figure 3 as shown in the following Table 7:

Cell1

Cell2

Cell3

Cell4

Cell5

Cell6

Cell7

Cell2

Cell1

Cell1

Cell1

Cell1

Cell1

Cell1

Cell3

Cell3

Cell2

Cell3

Cell4

Cell5

Cell2

Cell4

Cell7

Cell4

Cell5

Cell6

Cell7

Cell6

Cell5

Cell6

Cell7

Table 7

Wherein, the overall Neighboring Relation Table of respective cell is shown in each list.As can be seen from Table 7, the overall Neighboring Relation Table globalneighborrelationtable (NRT)={ Cell2, Cell3, Cell4 of community Cell1, Cell5, Cell6, Cell7}, the overall Neighboring Relation Table={ Cell1 of community Cell2, Cell3, Cell7}, etc.

Then, in step s 2, central control equipment 2, according to the overall Neighboring Relation Table of Cell1, determines the restricted physical resources block district pattern information corresponding to base station 1, using the Inter-Cell Interference Coordination parameter information as base station 1.At this, in step s 2, central control equipment 2 is when it determines the restricted physical resources block district's pattern information corresponding to base station 1, need the overall Neighboring Relation Table of each community in the cell deployment as shown in Figure 3 that communication system communicationsystem1 is corresponding belonging to base station 1, as applied vertex coloring algorithm (vertexcoloringalgorithm) of the prior art, determine the restricted physical resources block district pattern information of each base station.Before application vertex coloring algorithm, in step s 2, central control equipment 2 converts the NRT of all communities obtained to pattern I × I matrix G (for cell deployment as shown in Figure 3, matrix G is 7 × 7 matrixes), in transfer process, be input as row u and row v, if uv ∈ is E, row u and row v equals 1, otherwise equals 0, wherein, row u and row v represents community Cell _uand Cell _vbetween relation, if community Cell _vbe positioned at community Cell _uoverall Neighboring Relation Table in, can be expressed as uv ∈ E, the row u of input and row v equals 1, otherwise equals 0; Then, in step s 2, the input that central control equipment 2 will be written to the quantity M of the matrix G obtained and restricted physical resources block district pattern information as vertex coloring algorithm in file graph.txt (as shown in Figure 4), output is the restricted physical resources block district pattern information distributing to each community, final output coloring.txt file as shown in Figure 5, as seen from Figure 5, the restricted physical resources block district pattern information of community Cell1 (i.e. base station 1) is pattern 1, i.e. pattern _cell1the restricted physical resources block district pattern information of=1, community Cell2 (i.e. base station 2) is pattern _cell2=2, by that analogy, the restricted physical resources block district pattern information of community Cell7 (i.e. base station 7) is pattern _cell7=3.In the process obtaining coloring.txt, by coloring.txt with S={ (i, m), i ∈ [1, I] m=[1, M] } express, also i.e. Cell _im configuration in mode, final the possibility of result is attempted obtaining by several wheel, for each trial, G is a definite matrix, M be not less than 2 integer, and be increase, during as the first trial, can M=2 be set, when second time is attempted, coloring.txt file can M=3 be set, until can successfully export.

Those skilled in the art will be understood that and above-mentionedly determine that the mode of described restricted physical resources block district pattern information is only citing; described in other determinations that are existing or that may occur from now on, the mode of restricted physical resources block district pattern information is as being applicable to the present invention; also within scope should being included in, and this is contained at this with way of reference.

Then, in step s 2, central control equipment 2 uses information according to the current Physical Resource Block in the restricted physical resources block district of base station 1 under described restricted physical resources block district pattern information and the community corresponding to base station 1 again, determines described business load rate information.

Such as, connect example, in step s 2, central control equipment 2 is after the restricted physical resources block district pattern information obtaining each base station as shown in Figure 5, can be the restricted physical resources block district pattern information expressed with bitmap by this results conversion, as obtained with the restricted physical resources block district pattern information expressed with bitmap shown in following table 8:

Table 8

As can be seen from Table 8, because the restricted physical resources block district pattern information of community Cell1 is pattern 1, also community Cell1 limited use PRBindex1 ~ PRBindex15 in mode 1 is just meaned, namely do not use PRBindex1 ~ PRBindex15, therefore community Cell1 is not scheduled on PRBindex1 ~ PRBindex15; The restricted physical resources block district pattern information of community Cell2 is pattern 2, and it is at pattern 2 times limited use PRBindex16 ~ PRBindex30; The restricted physical resources block district pattern information of community Cell3 is mode 3, it is limited use PRBindex31 ~ PRBindex45 under mode 3, similarly, for community Cell4 to Cell7, according to respective restricted physical resources block district pattern information, the PRB information of the corresponding limited use under restricted physical resources block mode information can be obtained from above table 8.

Then, in step s 2, the Physical Resource Block use information that central control equipment 2 is current with the community corresponding to each base station according to the restricted physical resources block district of each base station under described restricted physical resources block district pattern information again, determine described business load rate information, as business load rate information as described in calculating according to following formula (8):

$\begin{array}{ccc}\mathrm{traffic}\_\mathrm{load}\_\mathrm{ratio}& \mathrm{for}& {\mathrm{Cell}}_i\end{array}=\frac{\underset{j\&Element;\mathrm{\&Psi;}}{\mathrm{mean}}\left(\underset{n\&Element;\mathrm{\&Omega;}}{\mathrm{\&Sigma;}}{\mathrm{PRB}}_{j,n}\right)}{\underset{j\&Element;\mathrm{\&Psi;}}{\mathrm{mean}}\left(\underset{n\&Element;\mathrm{\&Omega;}}{\mathrm{\&Sigma;}}{\mathrm{PRB}}_{j,n}\right)+\underset{n\&Element;\stackrel{\&OverBar;}{\mathrm{\&Omega;}}}{\mathrm{\&Sigma;}}{\mathrm{PRB}}_{i,n}}---\left(8\right)$

Wherein, 1) traffic_load_ratioforCell _irepresent community Cell _ithe business load rate information of (i.e. base station i); 2) if index is that the PRB of n is at Cell _jmiddlely to be used, then PRB _j,n=1, otherwise be 0; 3) Ψ is community Cell _ioverall Neighboring Relation Table, Ω represents Cell _ioverall Neighboring Relation Table Zhong Ge community at community Cell _ione group of PRB that restricted physical resources block district under restricted physical resources block district pattern information is corresponding, i.e. point subrepresentation community Cell of formula (8) _ioverall Neighboring Relation Table Zhong Ge community at community Cell _irestricted physical resources block district pattern information under one group of PRB corresponding to restricted physical resources block district on use amount average, herein be on average to Cell _iquantity average of NRT small area; 4) represent Cell in whole bandwidth _ione group of PRB that untethered Physical Resource Block district under its restricted physical resources block district pattern information is corresponding, namely the denominator of formula (8) is two sums, and wherein Section 1 is molecule, and Section 2 is community Cell _ithe use information of one group of PRB that untethered Physical Resource Block district is corresponding under its restricted physical resources block district pattern information.

Such as, for community Cell1, its overall Neighboring Relation Table globalneighborrelationtable (NRT)={ Cell2, Cell3, Cell4, Cell5, Cell6, Cell7}, i.e. Ψ={ Cell2, Cell3, Cell4, Cell5, Cell6, Cell7}, known according to above table 8, in mode 1, Cell2 to Cell7 all uses PRBindex1 ~ PRBindex15, therefore, and now formula (8) Middle molecule the bitmap of information is used to be bitmap because central control equipment 2 receives the current Physical Resource Block of Cell1 that base station 1 sends in step sl _cell1={ x _1,1, x _1,2... x _{1, n}... x _{1, N}, N=50, x _1,1to x _1,20be 1, x _1,21to x _1,50be 0, namely Cell1 is in whole bandwidth in (totally 50 PRB), because of limited use (namely prohibitting the use) PRBindex1 ~ PRBindex15, in fact employs PRBindex16 ~ PRBindex20, therefore, the denominator Section 2 of formula (8) then for Cell1, in step s 2, central control equipment 2 can calculate traffic_load_ratioforCell ₁=15/ (15+5)=0.75.

In step s3, central control equipment 2 is by LTEX2 interface, corresponding described Inter-Cell Interference Coordination parameter information and business load rate information is sent to base station described in each, as sent Inter-Cell Interference Coordination parameter information as described in correspondence to base station 1, i.e. the restricted physical resources block district pattern information pattern of base station 1 _cell1=1, and business load rate information traffic_load_ratioforCell ₁=0.75.

At this, in step s3, when central control equipment 2 sends described Inter-Cell Interference Coordination parameter information and the business load rate information of described correspondence, also based on the information word corresponding respectively to described restricted physical resources block district's pattern information and described business load rate information in expansion X2 interface, the bitmap corresponding to described restricted physical resources block district pattern information and described business load rate information can be sent to corresponding described base station.Such as, for base station 1, in step s3, central control equipment 2 can by its restricted physical resources block district pattern information (i.e. pattern _cell1=1) " each PRB of RNTP " IE in above table 5 is write to be similar to the bitmap form shown in above formula (7), with by pattern _cell1=1 sends to base station 1, and wherein, if PRB is limited, in bitmap, the position of this PRB is set to " 1 ", if PRB can use, in bitmap, the position of this PRB is set to " 0 ", thus base station 1 at pattern _cell1bitmap under=1 is bitmap _{patternCell1=1}={ y _1,1, y _1,2... y _{1, n}... y _{1, N}, N=50, y _1,1to y _1,15be 1, y _1,16to y _1,50be 0; Meanwhile, in step s3, central control equipment 2 can by the business load rate information traffic_load_ratioforCell of base station 1 ₁" PRB use " in specific bandwidth IE in the above table 5 of=0.75 write, with by traffic_load_ratioforCell ₁=0.75 sends to base station 1, wherein, " specific bandwidth " item in " PRB in specific bandwidth uses " IE equals the restricted physical resources block district pattern information being configured to base station 1, and " PRB usage rate " item in " PRB in specific bandwidth uses " IE equals business load rate information and is multiplied by 100.

At this, for each community Cell _i, its PRB under restricted physical resources block district pattern information uses information all can be expressed as the bitmap form shown in following formula (9):

bitmap _patternCelli＝{y _i,1,y _i,2,…y _i,n,…y _i,N}，n∈[1,N](9)

Wherein, y _i,nrepresent, if the PRB that index is n is limited, then y _i,n=" 1 ", otherwise y _i,n=" 0 ".

Correspondingly, base station 1, by such as LTEX2 interface, receives the Inter-Cell Interference Coordination parameter information corresponding to described Inter-Cell Interference Coordination information and the business load rate information of described central control equipment 2 transmission.Such as, connect example, base station 1 receives the base station 1 of central control equipment 2 transmission at pattern _cell1bitmap bitmap under=1 _{patternCell1=1}={ y _1,1, y _1,2... y _{1, n}... y _{1, N}, N=50, y _1,1to y _1,15be 1, y _1,16to y _1,50be 0, and the traffic_load_ratioforCell of base station 1 ₁=0.75.

In step s 4 which, described Inter-Cell Interference Coordination parameter information, according to described business load rate information, is finely tuned in base station 1, to obtain interference coordination parameters information between corresponding Target cell.At this, in step s 4 which, base station 1 is before the described Inter-Cell Interference Coordination parameter information of fine setting, and the bitmap corresponding to the described restricted physical resources block district pattern information first sent according to described central control equipment, determines corresponding restricted physical resources block rate information; If described restricted physical resources block rate information is greater than described business load rate information and described business load rate information can be used, adjust described bitmap, thus realize fine setting, and obtain interference coordination parameters information between corresponding Target cell.

Such as, connect example, then in step s 4 which, shown in the base station 1 following formula of definable restricted physical resources block rate information (10):

$\mathrm{restricted}\_\mathrm{PRB}\_\mathrm{ratio}\_\mathrm{celli}=\frac{\underset{n\&Element;[1,N]}{\mathrm{\&Sigma;}}{y}_{i,n}}{N}---\left(10\right)$

For base station 1, it is limited at PRBindex1 ~ PRBindex15, y _1,1to y _1,15be 1, y _1,16to y _1,50be 0, therefore, restricted_PRB_ratio_cell1=15/50=0.3, because of restricted_PRB_ratio_cell1<traffic_load_rat ioforCell ₁, then in step s 4 which, base station 1 is not finely tuned described Inter-Cell Interference Coordination parameter information, and the restricted physical resources block district pattern information pattern will received from central control equipment 2 _cell1=1 as base station 1 Target cell between interference coordination parameters information.

For another example, on the other case, if in step s 4 which, base station 1 obtains restricted_PRB_ratio_cell1>traffic_load_ra tioforCell ₁, and traffic_load_ratioforCell ₁available, then in step s 4 which, the restricted physical resources block district pattern information pattern of adjustable base station, base station 11 _cell1=1, for each base station (i.e. community Cell _i), in step s 4 which, base station 1 can represent with the bitmap form shown in following formula (11) obtaining final restricted physical resources block district pattern information after the bitmap adjustment corresponding to its restricted physical resources block mode information, and it can be used as interference coordination parameters information between described Target cell:

Finalbitmap _patternCelli＝{z _i,1,z _i,2,…z _i,n,…z _i,N}(11)

Wherein, if n ∈ is Θ, z _i,n=1; Otherwise, z _i,n=0,

Size_of_ Ω is the size of Ω, and Θ is the final restricted physical resources block district determined, it is the subset of Ω, and Ω represents Cell _ioverall Neighboring Relation Table Zhong Ge community at community Cell _ione group of PRB that restricted physical resources block district under restricted physical resources block district pattern information is corresponding.

Such as, for base station 1 (i.e. Cell1), traffic_load_ratioforCell ₁× N=0.75 × 50=37.5, base station 1 is limited on PRBindex1 ~ PRBindex15, and therefore, the size of Ω is 15, then the size of Θ is 15, therefore, the Finalbitmap of base station 1 _patternCell1={ z _1,1, z _1,2... z _{1, n}... z _{1, N}, N=50, z _1,1to z _1,15be 1, z _1,16to z _1,50be 0.For another example, if the size obtaining Θ is 10, then the Finalbitmap of base station 1 _patternCell1={ z _1,1, z _1,2... z _{1, n}... z _{1, N}, N=50, z _1,1to z _1,10be 1, z _1,11to z _1,50be 0.

At this, the present invention, by according to described business load rate information, finely tunes described Inter-Cell Interference Coordination parameter information, is intended to consider the business load balance between different districts.

In step s 5, base station 1 is according to interference coordination parameters information between described Target cell, the user that described base station is served is dispatched, as dispatched at the PRBindex of untethered user, or, can also in conjunction with predetermined scheduling strategy, Cell Edge User is only dispatched on the PRBindex of untethered, and for Cell Center User, except dispatching on the PRBindex of untethered, power can also be reduced on limited PRB to dispatch user, namely on limited PRB, carry out transfer of data.

At this, the present invention reduces power on limited PRB to dispatch user, has re-used limited PRB, has improve the performance of community average throughput, therefore, between community average throughput and cell edge throughput, reaches good balance.

Such as, for base station 1, suppose in step s 4 which, base station 1 by it in step s3 from the restricted physical resources block district pattern information pattern that central control equipment 2 receives _cell1=1 as base station 1 Target cell between interference coordination parameters information, then in step s 5, base station 1 can on PRBindex16 ~ PRBindex50 to its service user dispatch.

Constant work between each step of base station 1 and central control equipment 2.Particularly, in step sl, base station 1 continues to send to the central control equipment 2 of correspondence the Inter-Cell Interference Coordination information obtained after testing; Correspondingly, central control equipment 2 continues to obtain the Inter-Cell Interference Coordination information about multiple base stations of correspondence; In step s 2, central control equipment 2, according to described Inter-Cell Interference Coordination information, determines the Inter-Cell Interference Coordination parameter information described in each corresponding to base station and business load rate information; In step s3, central control equipment 2 continues to send corresponding described Inter-Cell Interference Coordination parameter information and business load rate information to base station described in each; Correspondingly, what central control equipment 2 described in the continuous reception of base station 1 sent corresponds to the Inter-Cell Interference Coordination parameter information of described Inter-Cell Interference Coordination information and business load rate information; In step s 4 which, base station 1 continues according to described business load rate information, finely tunes described Inter-Cell Interference Coordination parameter information, to obtain interference coordination parameters information between corresponding Target cell; In step s 5, base station 1 continues according to interference coordination parameters information between described Target cell, dispatches the user that described base station is served.At this, those skilled in the art will be understood that " continuing " refers to the acquisition of interference coordination parameters information between the transmission of constantly carrying out Inter-Cell Interference Coordination information between base station 1 and each step of central control equipment 2 respectively and reception, the transmission of Inter-Cell Interference Coordination parameter information and business load rate information and reception, Target cell, the scheduling to user, until base station 1 stops sending Inter-Cell Interference Coordination information to central control equipment 2 in a long time.

Preferably, use information when described Inter-Cell Interference Coordination information comprises the current Physical Resource Block of the main interference information of adjacent cells of the community corresponding to described base station and this community, the method also comprises step S6 (not shown), step S7 (not shown) and step S8 (not shown).Particularly, in step s 6, the one or more Cell Edge User during base station 1 identifies corresponding to described base station community; In the step s 7, the Reference Signal Received Power corresponding to Cover treatment community that base station 1 is measured according to described Cell Edge User, determines the main interfered cell corresponding to this Cell Edge User from described coverage cell; In step s 8, the main interfered cell of base station 1 to Cell Edge User described in each merges to obtain described main interference information of adjacent cells.

At this, in step s 6, base station 1 identifies the mode of described Cell Edge User and in step sl aforementioned, base station 1 identifies that the mode of described Cell Edge User is identical or substantially identical, for simplicity's sake, therefore do not repeat them here, and be contained in this by reference.

At this, in the step s 7, the mode of described main interfered cell and in step sl aforementioned is determined in base station 1, base station 1 determines that the mode of described main interfered cell is identical or substantially identical, for simplicity's sake, therefore do not repeat them here, and be contained in this by reference.

At this, in step s 8, the main interfered cell of base station 1 to Cell Edge User described in each merges to obtain described main interference information of adjacent cells and in step sl aforementioned, the mode that the main interfered cell of base station 1 to Cell Edge User described in each merges to obtain described main interference information of adjacent cells is identical or substantially identical, for simplicity's sake, therefore do not repeat them here, and be contained in this by reference.

More preferably, if described Inter-Cell Interference Coordination parameter information comprises the restricted physical resources block district pattern information corresponding to described base station, it is (not shown that the method also comprises step S9.Particularly, in step s 9, the bitmap corresponding to the described restricted physical resources block district pattern information that base station 1 sends according to described central control equipment, determines corresponding restricted physical resources block rate information; Wherein, if described restricted physical resources block rate information is greater than described business load rate information and described business load rate information can be used, in step s 4 which, base station 1 adjusts described bitmap, to finely tune described Inter-Cell Interference Coordination parameter information, obtain interference coordination parameters information between corresponding Target cell.

At this, in step s 9, the mode of described restricted physical resources block rate information and in step s 4 which aforementioned is determined in base station 1, base station 1 determines that the mode of described restricted physical resources block rate information is identical or substantially identical, for simplicity's sake, therefore do not repeat them here, and be contained in this by reference.

At this, in step s 4 which, base station 1 adjusts the mode of described bitmap and in step s 4 which aforementioned, and the mode that base station 1 adjusts described bitmap is identical or substantially identical, for simplicity's sake, therefore does not repeat them here, and is contained in this by reference.

Preferably, for central control equipment 2, if state Inter-Cell Interference Coordination information to comprise the current Physical Resource Block of the main interference information of adjacent cells of the community described in each corresponding to base station and this community and use information, step S2 comprises step S21 (not shown), step S22 (not shown) and step S23 (not shown).Particularly, in the step s 21, central control equipment 2, according to the main interfered cell information of the community described in each corresponding to base station, determines the overall Neighboring Relation Table that this community is corresponding; In step S22, central control equipment 2, according to described overall Neighboring Relation Table, determines the restricted physical resources block district pattern information described in each corresponding to base station, using as described Inter-Cell Interference Coordination parameter information; In step S23, the Physical Resource Block use information that central control equipment 2 is current with the community corresponding to base station described in each according to the restricted physical resources block district of base station described in each under described restricted physical resources block district pattern information, determines described business load rate information; Wherein, in step s3, bitmap corresponding to described restricted physical resources block district pattern information and described business load rate information, based on the information word corresponding respectively to described restricted physical resources block district's pattern information and described business load rate information in expansion X2 interface, are sent to corresponding described base station by central control equipment 2.

At this, in the step s 21, central control equipment 2 determines the mode of described overall Neighboring Relation Table and in step s 2 aforementioned, central control equipment 2 determines that the mode of described overall Neighboring Relation Table is identical or substantially identical, for simplicity's sake, therefore do not repeat them here, and be contained in this by reference.

At this, in step S22, central control equipment 2 determines the mode of described restricted physical resources block district pattern information and in step s 2 aforementioned, central control equipment 2 determines that the mode of described restricted physical resources block district pattern information is identical or substantially identical, for simplicity's sake, therefore do not repeat them here, and be contained in this by reference.

At this, in step S23, central control equipment 2 determines the mode of described business load rate information and in step s 2 aforementioned, central control equipment 2 determines that the mode of described business load rate information is identical or substantially identical, for simplicity's sake, therefore do not repeat them here, and be contained in this by reference.

At this, in step s3, central control equipment 2 sends the mode of bitmap corresponding to described restricted physical resources block district pattern information and described business load rate information and in step s3 aforementioned based on the information word corresponding respectively to described restricted physical resources block district's pattern information and described business load rate information in expansion X2 interface, the mode that central control equipment 2 sends bitmap corresponding to described restricted physical resources block district pattern information and described business load rate information is identical or substantially identical, for simplicity's sake, therefore do not repeat them here, and be contained in this by reference.

Preferably, for eICIC, central control equipment 2 using the Inter-Cell Interference Coordination parameter information of ABS density as correspondence, and can represent with following formula (12):

$\mathrm{ABS}\_\mathrm{density}=\frac{\underset{j\&Element;J}{\mathrm{\&Sigma;}}{\mathrm{PRB}}_{\mathrm{ABS}}^{\mathrm{Victim}\_\mathrm{UEs}\_\mathrm{of}\_{\mathrm{Micro}}_j}}{\underset{j\&Element;J}{\mathrm{\&Sigma;}}{\mathrm{PRB}}_{\mathrm{ABS}}^{\mathrm{Victim}\_\mathrm{UEs}\_\mathrm{of}\_{\mathrm{Micro}}_j}+\frac{J}{M}\underset{m\&Element;M}{\mathrm{\&Sigma;}}{\mathrm{PRB}}^{{\mathrm{Macro}}_m}}---\left(12\right)$

Wherein, formula (12) Middle molecule represents the use amount of the Cell Edge User PRB in ABS subframe in all Microcells; Denominator is two summations, and wherein last item is molecule, and latter one is the use amount of all macrocell user PRB in Non-ABS (non-ABS) subframe, and J represents Microcell number in network, and M represents macrocell number in network.

At this, for eICIC, base station 1 does not need to finely tune it, because obtaining according to traffic load level when central control equipment 2 determines ABSdensity according to formula (12).

ABS suppressing method based on eICIC can be applicable to relax the interference between macrocell to small cell.In ABS subframe, PDSCH and the PDCCH channel of macrocell is suppressed, mean UE can not in ABS subframe in be scheduled, and in small cell, cell edge UE can not in non-ABS subframe in be scheduled.Dynamic eICIC scheme can bring the cell edge throughput gain of about 30%, and the community average throughput flow gain of nearly 20%.

At this, those skilled in the art will be understood that, but ICIC/eICIC parameter such as business load rate information, restricted physical resources block mode information, abs mode can be updated in each update cycle, thus in adaptation real system, the change of continuous print business load and user change respectively.Wherein, the update cycle is configurable, as being configured to every 10 seconds.

The present invention can significantly improve cell-edge performance and not affect network throughput, and traditional static state and semi-static ICIC scheme, the lifting of cell-edge performance with the loss of community average throughput for cost.

By system simulation, static ICIC such as reverse ICIC in cell edge throughput, can show the gain of about 20% relative to the scheme that channeling is 1, but has about 30% loss in the average throughput of community; And be the scheme of 1 compared to channeling, concentrated ICIC scheme of the present invention can obtain the gain of about 30% at cell edge throughput, and does not affect network throughput.

In addition, determine compared to the existing ICIC of realization parameter and dispatched users but there is high backhaul signaling defect and minizone schedule information exchange the concentrated ICIC scheme with delay in central controller device, the present invention realizes determining ICIC parameter information in common control equipment, realize real user scheduling in a base station, considerably improve cell throughout, especially the throughput of Cell Edge User, and, present invention accomplishes the tight timing requirements needing dispatched users.

It should be noted that the present invention can be implemented in the assembly of software and/or software restraint, such as, application-specific integrated circuit (ASIC) (ASIC), general object computer or any other similar hardware device can be adopted to realize.In one embodiment, software program of the present invention can perform to realize step mentioned above or function by processor.Similarly, software program of the present invention (comprising relevant data structure) can be stored in computer readable recording medium storing program for performing, such as, and RAM memory, magnetic or CD-ROM driver or floppy disc and similar devices.In addition, steps more of the present invention or function can adopt hardware to realize, such as, as coordinating with processor thus performing the circuit of each step or function.

In addition, a part of the present invention can be applied to computer program, such as computer program instructions, when it is performed by computer, by the operation of this computer, can call or provide according to method of the present invention and/or technical scheme.And call the program command of method of the present invention, may be stored in fixing or moveable recording medium, and/or be transmitted by the data flow in broadcast or other signal bearing medias, and/or be stored in the working storage of the computer equipment run according to described program command.At this, comprise a device according to one embodiment of present invention, this device comprises the memory for storing computer program instructions and the processor for execution of program instructions, wherein, when this computer program instructions is performed by this processor, trigger this plant running based on the aforementioned method according to multiple embodiment of the present invention and/or technical scheme.

To those skilled in the art, obviously the invention is not restricted to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present invention or essential characteristic, the present invention can be realized in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present invention is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the present invention.Any Reference numeral in claim should be considered as the claim involved by limiting.In addition, obviously " comprising " one word do not get rid of other unit or step, odd number does not get rid of plural number.Multiple unit of stating in device claim or device also can be realized by software or hardware by a unit or device.First, second word such as grade is used for representing title, and does not represent any specific order.

Claims (15)

1. be used in base station end the method realizing dispatched users based on Inter-Cell Interference Coordination parameter, wherein, the method comprises:

A sends to the central control equipment of correspondence the Inter-Cell Interference Coordination information obtained after testing;

B receives the Inter-Cell Interference Coordination parameter information corresponding to described Inter-Cell Interference Coordination information and the business load rate information of the transmission of described central control equipment;

C, according to described business load rate information, finely tunes described Inter-Cell Interference Coordination parameter information, to obtain interference coordination parameters information between corresponding Target cell;

D, according to interference coordination parameters information between described Target cell, dispatches the user that described base station is served.

2. method according to claim 1, wherein, described Inter-Cell Interference Coordination information comprises the current Physical Resource Block of the main interference information of adjacent cells of the community corresponding to described base station and this community and uses information.

3. method according to claim 2, wherein, the method also comprises:

-identify corresponding to described base station community in one or more Cell Edge User;

-measure according to described Cell Edge User correspond to the Reference Signal Received Power of Cover treatment community, from described coverage cell, determine the main interfered cell corresponding to this Cell Edge User;

-merge to obtain described main interference information of adjacent cells to the main interfered cell of Cell Edge User described in each.

4. according to the method in claim 2 or 3, wherein, described Inter-Cell Interference Coordination parameter information comprises the restricted physical resources block district pattern information corresponding to described base station, and the method also comprises:

-the bitmap corresponding to described restricted physical resources block district pattern information that sends according to described central control equipment, determines corresponding restricted physical resources block rate information;

Wherein, described step c comprises:

Restricted physical resources block rate information described in-Ruo is greater than described business load rate information and described business load rate information can be used, adjust described bitmap, to finely tune described Inter-Cell Interference Coordination parameter information, obtain interference coordination parameters information between corresponding Target cell.

5. be used at central control equipment end the method realizing dispatched users based on Inter-Cell Interference Coordination parameter, wherein, the method comprises:

A obtains the Inter-Cell Interference Coordination information about multiple base stations of correspondence;

B, according to described Inter-Cell Interference Coordination information, determines the Inter-Cell Interference Coordination parameter information described in each corresponding to base station and business load rate information;

C sends corresponding described Inter-Cell Interference Coordination parameter information and business load rate information to base station described in each.

6. method according to claim 5, wherein, described Inter-Cell Interference Coordination information comprises the current Physical Resource Block of the main interference information of adjacent cells of the community described in each corresponding to base station and this community and uses information.

7. method according to claim 6, wherein, described step B comprises:

-according to the main interference information of adjacent cells of the community described in each corresponding to base station, determine the overall Neighboring Relation Table that this community is corresponding;

-according to described overall Neighboring Relation Table, determine the restricted physical resources block district pattern information described in each corresponding to base station, using as described Inter-Cell Interference Coordination parameter information;

-the Physical Resource Block current with the community corresponding to base station described in each according to the restricted physical resources block district of base station described in each under described restricted physical resources block district pattern information uses information, determines described business load rate information;

Wherein, described step C comprises:

-based on the information word corresponding respectively to described restricted physical resources block district's pattern information and described business load rate information in expansion X2 interface, the bitmap corresponding to described restricted physical resources block district pattern information and described business load rate information are sent to corresponding described base station.

8., for realizing a base station for dispatched users based on Inter-Cell Interference Coordination parameter, wherein, this base station comprises:

First dispensing device, sends for the central control equipment to correspondence the Inter-Cell Interference Coordination information obtained after testing;

Second receiving system, for receiving the Inter-Cell Interference Coordination parameter information corresponding to described Inter-Cell Interference Coordination information and the business load rate information of the transmission of described central control equipment;

Micromatic setting, for according to described business load rate information, finely tunes described Inter-Cell Interference Coordination parameter information, to obtain interference coordination parameters information between corresponding Target cell;

Dispatching device, for according to interference coordination parameters information between described Target cell, dispatches the user that described base station is served.

9. base station according to claim 8, wherein, described Inter-Cell Interference Coordination information comprises the current Physical Resource Block of the main interference information of adjacent cells of the community corresponding to described base station and this community and uses information.

10. base station according to claim 9, wherein, this base station also comprises:

Recognition device, for identifying the one or more Cell Edge User in the community corresponding to described base station;

First determining device, for the Reference Signal Received Power corresponding to Cover treatment community measured according to described Cell Edge User, determines the main interfered cell corresponding to this Cell Edge User from described coverage cell;

Merging device, obtaining described main interference information of adjacent cells for merging the main interfered cell of Cell Edge User described in each.

11. base stations according to claim 9 or 10, wherein, described Inter-Cell Interference Coordination parameter information comprises the restricted physical resources block district pattern information corresponding to described base station, and this base station also comprises:

Second determining device, for the bitmap corresponding to the described restricted physical resources block district pattern information that sends according to described central control equipment, determines corresponding restricted physical resources block rate information;

Wherein, described micromatic setting is used for:

Restricted physical resources block rate information described in-Ruo is greater than described business load rate information and described business load rate information can be used, adjust described bitmap, to finely tune described Inter-Cell Interference Coordination parameter information, obtain interference coordination parameters information between corresponding Target cell.

12. 1 kinds for realizing the central control equipment of dispatched users based on Inter-Cell Interference Coordination parameter, wherein, this central control equipment comprises:

Acquisition device, for obtaining the Inter-Cell Interference Coordination information of the multiple base stations about correspondence;

3rd determining device, for according to described Inter-Cell Interference Coordination information, determines the Inter-Cell Interference Coordination parameter information described in each corresponding to base station and business load rate information;

Second dispensing device, for sending corresponding described Inter-Cell Interference Coordination parameter information and business load rate information to base station described in each.

13. central control equipments according to claim 12, wherein, described Inter-Cell Interference Coordination information comprises the current Physical Resource Block of the main interference information of adjacent cells of the community described in each corresponding to base station and this community and uses information.

14. central control equipments according to claim 13, wherein, described 3rd determining device comprises:

First determining unit, for the main interfered cell information according to the community described in each corresponding to base station, determines the overall Neighboring Relation Table that this community is corresponding;

Second determining unit, for according to described overall Neighboring Relation Table, determines the restricted physical resources block district pattern information described in each corresponding to base station, using as described Inter-Cell Interference Coordination parameter information;

3rd determining unit, use information for the Physical Resource Block current with the community corresponding to base station described in each according to the restricted physical resources block district of base station described in each under described restricted physical resources block district pattern information, determine described business load rate information;

Wherein, described second dispensing device is used for:

-based on the information word corresponding respectively to described restricted physical resources block district's pattern information and described business load rate information in expansion X2 interface, the bitmap corresponding to described restricted physical resources block district pattern information and described business load rate information are sent to corresponding described base station.

15. 1 kinds for realizing the system of dispatched users based on Inter-Cell Interference Coordination parameter, wherein, this system comprises the base station according to any one of according to Claim 8 to 11, and according to claim 12 to the central control equipment according to any one of 14.