CN102387554B - Method for allocating inter-cell interference coordination (ICIC) resource - Google Patents

Abstract

The invention discloses a method for allocating inter-cell interference coordination (ICIC) resource. The method comprises the following steps: a certain number of neighboring cells are taken as a cell group through a public management entity, and resource is reserved as round-robin resource of the cell group; when the cells in the cell group report edge resource insufficiency to the public management entity, the public management entity indicates all the cells in the cell group to start an algorithm; all the cells in the cell group calculate the round-robin sequence of the round-robin resource among the cells according to the algorithm; and the cells use the round-robin resource according to the round-robin sequence. The method has the beneficial effects of realizing the dynamic interference coordination algorithm without information interaction at an interface X2 and preventing the situations that new inter-cell interference among the neighboring cells is possibly caused by load information interaction and a static resource partitioning mode can not adapt to unbalanced inter-cell edge resource; and meanwhile the public management entity is configured simply, and calculation based on the algorithm is mainly completed in a base station with small computation quantity.

Description

A kind of Inter-Cell Interference Coordination resource allocation methods

Technical field

The present invention relates to moving communicating field, particularly relate to a kind of Inter-Cell Interference Coordination resource allocation methods.

Background technology

LTE (Long Term Evolution, Long Term Evolution) system adopts flat network configuration, based on OFDM (Orthogonal Frequency Division Multiplexing, OFDM) in the LTE system of technology, affect the main interference of systematic function from presence of intercell interference.Therefore ICIC (Inter-Cell Interference Coordination, coordinating district interference) technology is one of effective means improving systematic function.ICIC, by Radio Resource is managed, remains on the interference level between community under controlled state, especially in cell edge area, need to do special management to Radio Resource, to meet the lifting demand of LTE system cell edge customer service quality.

The basic thought of Inter-Cell Interference Coordination is, in minizone, the use of resource is carried out to certain restriction, comprises that limiting which running time-frequency resource can use, or limit its transmitting power on certain running time-frequency resource.

The frequency that the restriction of using from Radio Resource is upgraded, ICIC method can be divided into following three major types:

Static coordination: it is some days that the use of Radio Resource is limited to the time scale reconfiguring.Need hardly interactive information between base station.

Semi-static coordination: the use of Radio Resource is limited to the time scale that reconfigures for level or longer second.Between base station, the frequency of information transmission is tens seconds or minute level.

Dynamic coordinate: it is tens or hundreds of millisecond that the use of Radio Resource is limited to the time scale reconfiguring, and the frequency that between base station, information is transmitted is similar.

Wherein, static ICIC algorithm is representative with SFR (Soft Frequency Reuse, soft-frequency reuse), the pre-configured minizone of this algorithm resource division, on sub-band as specific in certain, use full power transmissions, on all the other sub-bands, transmitting power is reduced.

Wherein, semi-static and dynamic I CIC algorithm, need in general the support of X2 interface (being the communication interface between eNB and eNB) Load information (load information) information, instruction according to this information to the upper disturbed condition of each PRB, in the time of this cell scheduling, avoid the PRB that divides pairing adjacent area to produce high interference for edge customer, realize the object of ICIC.

3GPP standard, by interface message Load information, realizes minizone dynamic interference coordination object at present.The method needs mutual a large amount of X2 interface message, and for the cell-of-origin that receives this message, for fear of and send the interference between the adjacent cell of this message, can carry out resource re-allocation, probably cause the new presence of intercell interference with other adjacent cell.

On the other hand, existing static ICIC resource dividing method, flexibility is poor, the situation poor-performing that especially edge user increases.

Summary of the invention

The invention provides a kind of Inter-Cell Interference Coordination resource allocation methods, the method need to be in X2 interface interactive information, can realize dynamic interference coordination algorithm, avoid Load Information interacting message, that may cause and new presence of intercell interference other adjacent cell, and static resource is divided and cannot be adapted to the unbalanced situation of minizone edge resource.Meanwhile, public administration physical arrangements of the present invention is simple, and the calculating of algorithm mainly completes at inside of base station, and operand is little.

For achieving the above object, technical scheme of the present invention is achieved in that

The disturbance coordination method that the invention discloses a kind of minizone, the method comprises:

Get the neighbor cell of some, as a cell set, and reserved resource, as the repeating query resource of described cell set;

In the time that described public administration entity receives the not enough information of edge resource that described cell set small area reports, in the group of indicating cell, all communities start Predistribution Algorithms;

In described cell set, all communities calculate described repeating query resource according to described Predistribution Algorithm and respectively report the round-robin order of minizone of the not enough information of edge resource;

The community that reports the not enough information of edge resource in described cell set is used described repeating query resource according to described round-robin order.

In said method, described public administration entity receives the not enough information of edge resource that described cell set small area reports and specifically comprises:

Public administration entity setting up threshold T h _dyn-start, and configuration is to all communities in cell set;

Edge customer edge resources occupation rate U in Jiang Zhe community, each community in described cell set _edgewith described threshold T h _dyn-startcontrast, work as U _edge> Th _dyn-starttime, this community reports edge resource deficiency to public administration entity.

In said method, the method further comprises:

After Predistribution Algorithm starts, each community is calculated and is upgraded thresholding Th according to following formula _dyn-update, and with upgrading thresholding Th _dyn-updatesubstitute threshold T h _dyn-start;

${\mathrm{Th}}_{\mathrm{Dyn}-\mathrm{update}}=\frac{{\mathrm{Th}}_{\mathrm{Dyn}-\mathrm{start}}\·n_{\mathrm{PRB}-\mathrm{edge}}}{n_{\mathrm{PRB}-\mathrm{edge}}-\frac{1}{3}{n}_{\mathrm{PRB}}}$

Wherein, n _pRB-edgebefore this Predistribution Algorithm startup, system default is distributed to the PRB number of the edge customer of each community, n _pRBfor the PRB number of repeating query resource.

In said method, described reserved resource comprises:

Pre-determine unique repeating query resource;

Or, pre-determine multiple repeating query resources, and the original position of each repeating query resource and included Physical Resource Block number;

Or, pre-determine the number of the included continuous Physical Resource Block of repeating query resource.

In said method, in the time pre-determining unique repeating query resource, in described cell set, all communities calculate described repeating query resource according to described Predistribution Algorithm and comprise in the round-robin order of the minizone that respectively reports the not enough information of edge resource:

Described public administration entity configures the community serial number information of the cell ID of all edge resource deficiencies and resource repeating query to all communities or by the community serial number information of the cell ID of each edge resource deficiency and resource repeating query and configures to corresponding community separately;

In the time that described public administration entity configures to all communities by the community serial number information of the cell ID of edge resource deficiency and resource repeating query, each community is calculated as follows out the sequence number of current repeating query resource home cell:

Wherein, current TTI is current time, TTI ₀indicate all communities for described public administration entity and start the moment of prefabricated algorithm, T is the time that repeating query resource is applied to each community, n _mfor the number of the not enough community of edge resource in described cell set;

When described public administration entity is when by the community serial number information of the cell ID of each edge resource deficiency and resource repeating query, separately configuration is to corresponding community, whether repeating query Dao Zhe community of current repeating query resource is calculated and rules out in each community by above formula;

In the time that community is not configured the community sequence number of resource repeating query, do not use repeating query resource.

In said method, when pre-determining multiple repeating query resources, and when the original position of each repeating query resource and included Physical Resource Block number, in described cell set, all communities calculate described repeating query resource according to described Predistribution Algorithm and comprise in the round-robin order of the minizone that respectively reports the not enough information of edge resource:

Described public administration entity configures the community serial number information of the cell ID of all edge resource deficiencies and resource repeating query to all communities or by the community serial number information of the cell ID of each edge resource deficiency and resource repeating query and configures to corresponding community separately;

In the time that described public administration entity configures to all communities by the community serial number information of the cell ID of edge resource deficiency and resource repeating query, each community is calculated as follows out current repeating query resource:

Wherein, n _rfor the number of repeating query resource;

And be calculated as follows out the sequence number of current repeating query resource home cell:

When described public administration entity is when by the community serial number information of the cell ID of each edge resource deficiency and resource repeating query, separately configuration is to corresponding community, each community is calculated as follows out current repeating query resource:

And be calculated as follows and rule out whether repeating query Dao Zhe community of current repeating query resource:

Wherein, n _mfor the number of the not enough community of edge resource in described cell set;

In the time that community is not configured the community sequence number of resource repeating query, do not use the repeating query resource of the repeating query resource sequence number being calculated as follows out

In said method, in the time pre-determining the number of the included continuous Physical Resource Block of repeating query Resource Block, in described cell set, all communities calculate described repeating query resource according to described Predistribution Algorithm and comprise in the round-robin order of the minizone that respectively reports the not enough information of edge resource:

Described public administration entity configures the community sequence number of the cell ID of edge resource deficiency and resource repeating query to all communities in cell set, and selects a random function, and configuration is to all communities in cell set;

Each community in described cell set is also calculated as follows out the sequence number of current repeating query resource home cell:

Each community in described cell set is applied to the initial time of time of community as the input of described random function using repeating query resource, draw the original position of the repeating query Resource Block that current time repeating query Dao community uses by described random function;

Current time not repeating query Dao community is also done corresponding calculating, and the resource block location of result of calculation instruction is vacated, and leaves current repeating query Dao community for and uses.

In said method, the method further comprises:

In the time that community is judged as edge resource deficiency, report the not enough information of edge resource to public administration entity;

When the community of former edge resource deficiency is judged as edge resource when enough, report edge resource enough information to public administration entity;

Public administration entity is in the time receiving the not enough information of edge resource and report any in edge resource enough information, upgrade the cell ID of edge resource deficiency and the community sequence number of resource repeating query, and the cell ID of edge resource deficiency and the community sequence number of resource repeating query after upgrading are indicated to all communities in cell set;

Local preservation information is correspondingly upgraded in each community, restarts Predistribution Algorithm, and the moment that the renewal that receives public administration entity is indicated is as Predistribution Algorithm Startup time.

In said method, the method further comprises:

In the time that all communities in cell set all become the enough community of edge resource, described public administration entity finishes to all communities instruction algorithms in described cell set, and described each community empties local information of preserving.

In said method, the method further comprises:

The related content of each minizone resource repeating query in cell set is notified the outer adjacent area of group to cell set by public administration entity;

Described group of outer adjacent area according to the information of each minizone resource repeating query in described cell set by current repeating query resource vacate need not, until described Predistribution Algorithm finishes.

From above-mentioned, technical scheme in example of the present invention, get the neighbor cell of some by public administration entity, as a cell set, and reserved resource, as the repeating query resource of described cell set, in the time that cell set small area reports edge resource not enough to public administration entity, all communities starting algorithm in the group of public administration entity indicating cell, in cell set, all communities calculate the round-robin order of described repeating query resource in each minizone according to described algorithm, and use repeating query resource according to described round-robin order, realize without in X2 interface interactive information, can realize dynamic interference coordination algorithm, avoid Load Information interacting message, that may cause and new presence of intercell interference other adjacent cell, and static resource division cannot adapt to the unbalanced situation of minizone edge resource.Meanwhile, public administration physical arrangements of the present invention is simple, and the calculating of algorithm mainly completes at inside of base station, and operand is little.

Brief description of the drawings

Fig. 1 is the flow chart of resource allocation methods between the dynamic community adjusting in example one of the present invention;

Fig. 2 is the flow chart of the not enough information of edge resource that in the embodiment of the present invention two, public administration entity reception cell set small area reports;

Fig. 3 is embodiment of the present invention San Zhong community repeating query schematic diagram;

Fig. 4 is the different application situation schematic diagram for unreserved resource in the embodiment of the present invention three;

Fig. 5 is embodiment of the present invention Si Zhong community repeating query situation schematic diagram;

Fig. 6 is the different application situation schematic diagram for unreserved resource in the embodiment of the present invention four;

Embodiment

In order to make the object, technical solutions and advantages of the present invention clearer, describe the present invention below in conjunction with the drawings and specific embodiments.

Example one

Fig. 1 is the flow chart of resource allocation methods between the dynamic community adjusting in example one of the present invention, as shown in Figure 1, example one of the present invention has proposed a kind of method that between dynamic community adjusting, resource is distributed, and the method does not need the support of interface signaling, realizes by following steps:

101, get the neighbor cell of some, as a cell set, and reserved resource, as the repeating query resource of cell set;

102, in the time that public administration entity receives the not enough information of edge resource that cell set small area reports, in the group of indicating cell, all communities start Predistribution Algorithms;

103, in cell set, all communities calculate repeating query resource according to described Predistribution Algorithm and respectively report the round-robin order of minizone of the not enough information of edge resource;

104, the community that reports the not enough information of edge resource in cell set is used described repeating query resource according to described round-robin order.

Therefore, the present invention need to be in X2 interface interactive information, can realize dynamic interference coordination algorithm, avoid Load Information interacting message, that may cause and new presence of intercell interference other adjacent cell, and static resource is divided and cannot be adapted to the unbalanced situation of minizone edge resource.

By the invention process one, the core process that between the dynamic community adjusting that the present invention is proposed, resource is distributed is introduced, and is introduced below by the more detailed process of resource allocation methods between two～five pairs of dynamic community adjustings of the embodiment of the present invention.Wherein because reserved resource comprises: pre-determine unique repeating query resource; Or, pre-determine multiple repeating query resources, and the original position of each repeating query resource and included Physical Resource Block number; Or, pre-determine the number various ways of the included continuous Physical Resource Block of repeating query resource, therefore by example three～five, these three kinds of diverse ways are described in detail.

Example two

Fig. 2 is the flow chart of the not enough information of edge resource that in the embodiment of the present invention two, public administration entity reception cell set small area reports.As shown in Figure 2, the not enough information concrete steps of edge resource that public administration entity reception cell set small area reports are as follows:

201, public administration entity setting up threshold T h _dyn-start, and configure to all communities in cell set, wherein threshold value can adopt empirical value;

202, edge customer edge resources occupation rate U in the Jiang Zhe community, each community in cell set _edgewith threshold T h _dyn-startcontrast;

203, work as U _edge> Th _dyn-starttime, this community reports edge resource deficiency to public administration entity.

Example three

In example three of the present invention, pre-determine the concrete steps of repeating query resource situation.

The simplest repeating query resource selection, pre-determines repeating query resource, and indicates Gei Ge community, each community to use regularly same repeating query resource.

(1) get the neighbor cell of some, as a cell set, and reserved resource, as the repeating query resource of described cell set.

Get some (n _cindividual) neighbor cell, as a cell set, and a reserved resource (n _pRBindividual PRB), as the repeating query resource of each minizone of edge resource deficiency in cell set.

(2) in the time that public administration entity receives the not enough information of edge resource that cell set small area reports, in the group of indicating cell, all communities start Predistribution Algorithms.

Public administration entity setting up threshold T h _dyn-start, and configure to all communities in cell set, wherein threshold value adopts empirical value.As edge customer edge resources occupation rate U in community _edge> Th _dyn-start, community reports edge resource deficiency to public administration entity.Once there be one or more (n in cell set _mindividual, n _m≤ n _c) community reports edge resource deficiency to public administration entity, in the group of public administration entity indicating cell, all communities start this algorithm, and each community will receive moment that public administration entity instruction algorithm starts as TTI ₀.

(3) calculate by the following method repeating query resource and respectively report the round-robin order of minizone of the not enough information of edge resource:

Suppose that the time that repeating query resource is applied to each community is T, make T=kTTI, wherein k is positive integer., in cell set, shown according to the form below, complete first resource repeating query process.

Table 1

First row and secondary series in upper table, can complete by public administration physical arrangements, and public administration entity configures these two row to all communities or only configures to related cell alternatively.In practical application, if (2) Lie community sequence number in table is known in cell set in other community correspondences in each community, Ze Ge community is calculated and is adjudicated current repeating query resource and belong to which adjacent area by following formula (1); If only there is the community sequence number of local area community, whether repeating query is to local area to calculate current SFN resource by following formula; If community is not configured community sequence number, think that pre-configured repeating query resource is unavailable.

That is to say, public administration entity configures the community serial number information of the cell ID of all edge resource deficiencies and resource repeating query to all communities,, give all communities by all information configuration of the first row in table 1 and secondary series, or the community serial number information of the cell ID of each edge resource deficiency and resource repeating query is configured to corresponding community separately, the information that, in the first row in table 1 and secondary series, each row is corresponding configures to corresponding community separately.Wherein the community ID of edge resource deficiency and the community sequence number of resource repeating query should be one-to-one relationship.

In the time that public administration entity configures to all communities by the community serial number information of the cell ID of edge resource deficiency and resource repeating query, each community is calculated as follows out the sequence number of current repeating query resource home cell:

Wherein, current TTI is current time, TTI ₀indicate all communities for described public administration entity and start the moment of prefabricated algorithm, T is the time that repeating query resource is applied to each community, n _mfor the number of the not enough community of edge resource in described cell set;

When public administration entity is when by the community serial number information of the cell ID of each edge resource deficiency and resource repeating query, separately configuration is to corresponding community, whether repeating query Dao Zhe community of current repeating query resource is calculated and ruled out in each community by above formula (1);

In the time that community is not configured the community sequence number of resource repeating query, do not use repeating query resource.

(4) in cell set, all communities are used repeating query resource according to round-robin order.

Press the method in embodiment tri-, Yi Sange community is example, its edge resource deficiency has been indicated to public administration entity in community 0 and community 1, in the group of public administration entity indicating cell, each cell algorithm starts, each community is using the moment 0 of this moment (3) row in table 1, Fig. 3 is embodiment of the present invention San Zhong community repeating query schematic diagram, as figure institute 3 shows, and resource repeating query between community 0 and community 1.

In Fig. 3, horizontal line dash area represents reserved repeating query resource, and diagonal line hatches part represents unreserved resource.

For the different application of unreserved resource, may there is following resource distribution mode.Fig. 4 is the different application situation schematic diagram for unreserved resource in the embodiment of the present invention three.

In Fig. 4, central user can be used diagonal line hatches partial-band, preferentially uses netted dash area frequency band; Edge customer can use horizontal line dash area and diagonal line hatches partial-band, and wherein, the user priority of close cell edge uses horizontal line dash area frequency band.

Example four

Example four is pre-determining multiple repeating query resources in the present invention, the number of described multiple repeating query resources, and concrete steps under each repeating query resource situation:

(1) get the neighbor cell of some, as a cell set, and reserved resource, as the repeating query resource of described cell set.

Get some (n _cindividual) neighbor cell, as a cell set, and a reserved resource, as the repeating query resource of each minizone of edge resource deficiency in cell set.

(2) in the time that described public administration entity receives the not enough information of edge resource that described cell set small area reports, in the group of indicating cell, all communities start Predistribution Algorithms.

Threshold T h is set _dyn-start, as edge customer edge resources occupation rate U in community _edge> Th _dyn-start, community reports edge resource deficiency to public administration entity.Once there be one or more (n in cell set _mindividual, n _m≤ n _c) community reports edge resource deficiency to public administration entity, in the group of public administration entity indicating cell, all communities start this algorithm, and each community will receive moment that public administration entity instruction algorithm starts as TTI ₀.

(3) calculate by the following method repeating query resource and respectively report the round-robin order of minizone of the not enough information of edge resource:

Suppose that the time that repeating query resource is applied to each community is T, make T=kTTI, wherein k is positive integer., in cell set, shown according to the form below, complete first resource repeating query process.Wherein, repeating query resource has expanded to n _rpiece, You Zhe community repeating query Resource Block number, and in every resource, specifically comprise which Physical Resource Block, according to the form below are shown in each minizone circulation of edge resource deficiency in cell set.

Table 2

First row and secondary series in upper table, can complete by public administration physical arrangements, and public administration entity configures these two row to all communities or only configures to related cell alternatively.(2) Lie community sequence number in table need to be known in cell set in other community correspondences in each community, current repeating query resource is determined by following formula (2) in Ze Ge community, further, in conjunction with the community sequence number computing formula of the resource repeating query of current correspondence, determine that local area is using this Resource Block as edge resource, or do not use this resource.If community is not configured community sequence number, think that to be calculated as follows the repeating query Resource Block drawing unavailable.

That is to say, public administration entity configures the community serial number information of the cell ID of all edge resource deficiencies and resource repeating query to all communities,, give all communities by all information configuration of the first row in table 1 and secondary series, or the community serial number information of the cell ID of each edge resource deficiency and resource repeating query is configured to corresponding community separately, the information that, in the first row in table 1 and secondary series, each row is corresponding configures to corresponding community separately.Wherein the community ID of edge resource deficiency and the community sequence number of resource repeating query should be one-to-one relationship.

In the time that public administration entity configures to all communities by the community serial number information of the cell ID of edge resource deficiency and resource repeating query, each community is calculated as follows out current repeating query resource:

Wherein, n _rfor the number of repeating query resource;

And be calculated as follows out the sequence number of current repeating query resource home cell:

When public administration entity is when by the community serial number information of the cell ID of each edge resource deficiency and resource repeating query, separately configuration is to corresponding community, each community is calculated as follows out current repeating query resource:

And be calculated as follows and rule out whether repeating query Dao Zhe community of current repeating query resource:

Wherein, n _mfor the number of the not enough community of edge resource in described cell set;

In the time that community is not configured the community sequence number of resource repeating query, do not use the repeating query resource of the repeating query resource sequence number being calculated as follows out

(4) community that reports the not enough information of edge resource in cell set is used described repeating query resource according to described round-robin order.

By the method in embodiment tetra-in the present invention, Yi Sange community is example, its edge resource deficiency has been indicated to public administration entity in community 0 and community 1, in the group of public administration entity indicating cell, each cell algorithm starts, each community is using the moment 0 of this moment (3) row in table 1, Fig. 5 is embodiment of the present invention Si Zhong community repeating query situation schematic diagram, as shown in Figure 5, and resource repeating query between community 0 and community 1.

In Fig. 5, horizontal line dash area represents repeating query resource, and diagonal line hatches part represents the non-repeating query resource of current time.

For the different application of unreserved resource, similar described in possible resource distribution mode and the embodiment of the present invention three.Fig. 6 is the different application situation schematic diagram for unreserved resource in the embodiment of the present invention four.

Example five

Example five is the concrete steps of the number situation of the included continuous Physical Resource Block of Zhong Zhe of the present invention community repeating query Resource Block:

(1) get the neighbor cell of some, as a cell set, and reserved resource, as the repeating query resource of described cell set.

Get some (n _cindividual) neighbor cell, as a cell set, and a reserved resource, as the repeating query resource of each minizone of edge resource deficiency in cell set.

(2) in the time that described public administration entity receives the not enough information of edge resource that described cell set small area reports, in the group of indicating cell, all communities start Predistribution Algorithms.

Threshold T h is set _dyn-start, as edge customer edge resources occupation rate U in community _edge> Th _dyn-start, community reports edge resource deficiency to public administration entity.Once there be one or more (n in cell set _mindividual, n _m≤ n _c) community reports edge resource deficiency to public administration entity, in the group of public administration entity indicating cell, all communities start this algorithm, and each community will receive moment that public administration entity instruction algorithm starts as TTI ₀.

(3) calculate by the following method repeating query resource and respectively report the round-robin order of minizone of the not enough information of edge resource:

In order to obtain larger frequency diversity gain, can apply following process the selection that completes repeating query resource.Only pre-determine the included continuous PRB number of repeating query Resource Block, and (2) row of table 2 are configured to all communities in cell set.

Each community in cell set is calculated as follows out the sequence number of current repeating query resource home cell:

Each community in cell set is applied to the initial time of time of community as the input of described random function using repeating query resource, draw the original position of the repeating query Resource Block that current time repeating query Dao community uses by described random function;

Current time not repeating query Dao community is also done corresponding calculating, and the resource block location of result of calculation instruction is vacated, and leaves current repeating query Dao community for and uses.

Wherein, random function, is that for example rand () can generate the random number between 0-1 for generating a random number, if be integer, just, with int (rand () * 10), represents 0 to 9 integer.Further, according to the random function difference of selecting, can generate the random number that meets different distributions, for example Matlab can provide following random number generation function: the random number generator of poissrnd Poisson distribution; The random number generator of raylrnd rayleigh distributed; The discrete equally distributed random number generator of unidrnd etc.In example of the present invention, can, according to concrete performance, select suitable random function.

(4) in cell set, all communities are used repeating query resource according to round-robin order.

In cell set, all communities are used repeating query resource according to round-robin order, and the mode of its implementation and example of the present invention three, four is basic identical.Its difference is the difference of the repeating query resource using.Its repeating query resource is mainly that the number of original position by calculating according to random function and predetermined repeating query Resource Block determines.

By embodiment 3-5, three kinds of diverse ways are described in detail above, below other parts are described in detail.

After this algorithm starts, because former edge resource may be compressed, if the thresholding Th while still startup with algorithm _dyn-startjudge cell status, probably cause that more edge resource still enters resource repeating query list in the community of abundance, therefore need after algorithm starts, upgrade thresholding Th _dyn-update, after starting at algorithm, judge cell status.

After Predistribution Algorithm starts, each community is calculated and is upgraded thresholding Th according to following formula _dyn-update, and with upgrading thresholding Th _dyn-updatesubstitute threshold T h _dyn-start;

${\mathrm{Th}}_{\mathrm{Dyn}-\mathrm{update}}=\frac{{\mathrm{Th}}_{\mathrm{Dyn}-\mathrm{start}}\·n_{\mathrm{PRB}-\mathrm{edge}}}{n_{\mathrm{PRB}-\mathrm{edge}}-\frac{1}{3}{n}_{\mathrm{PRB}}}$

Wherein, n _pRB-edgebefore this Predistribution Algorithm startup, system default is distributed to the PRB number of the edge customer of each community, n _pRBfor the PRB number of repeating query resource.

In calculating process, also may exist the 1st in table 1,2 row and the 2nd column information to change, certain community, because edge customer service ending or edge customer move to the reasons such as center of housing estate region, becomes the community that edge resource is enough.

In the time that community is judged as edge resource deficiency, report the not enough information of edge resource to public administration entity;

When the community of former edge resource deficiency is judged as edge resource when enough, report edge resource enough information to public administration entity;

Public administration entity is in the time receiving the not enough information of edge resource and report any in edge resource enough information, upgrade the cell ID of edge resource deficiency and the community sequence number of resource repeating query, and the cell ID of edge resource deficiency and the community sequence number of resource repeating query after upgrading are indicated to all communities in cell set;

Local preservation information is correspondingly upgraded in each community, restarts Predistribution Algorithm, and the moment that the renewal that receives public administration entity is indicated is as Predistribution Algorithm Startup time.

In the time that all communities in cell set all become the enough community of edge resource, public administration entity finishes to all communities instruction algorithms in described cell set, and described each community empties local information of preserving.

Meanwhile, once a cell set starts the Inter-Cell Interference Coordination algorithm in the present invention,, due to the change of the using method of frequency resource in group, may cause the presence of intercell interference of the outer community of cell set Nei community and cell set.For addressing this problem, can notify the outer adjacent area of group to cell set by the related content of each minizone resource repeating query in cell set by public administration entity, organize outer adjacent area according to the information of each minizone resource repeating query in described cell set by current repeating query resource vacate need not, until Predistribution Algorithm finishes.Look algorithm specific embodiments by public administration entity, the outer adjacent area of group by described table 1 or table 2 context notification above to cell set, organizes outer adjacent area correspondingly, is similar in group the not processing method of repeating query Dao community, current repeating query resource vacate need not, algorithm finishes.

In sum, prior art relatively, the present invention need to be in X2 interface interactive information, can realize dynamic interference coordination algorithm, avoid Load Information interacting message, that may cause and new presence of intercell interference other adjacent cell, and static resource is divided and cannot be adapted to the unbalanced situation of minizone edge resource.Meanwhile, public administration physical arrangements of the present invention is simple, and the calculating of algorithm mainly completes in fierce fighting inside, and operand is little.

The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any amendment of making, be equal to replacement, improvement etc., within all should being included in the scope of protection of the invention.

Claims (9)

1. a disturbance coordination method for minizone, is characterized in that, the method comprises:

Get the neighbor cell of some, as a cell set, and reserved resource, as the repeating query resource of described cell set;

In the time that described public administration entity receives the not enough information of edge resource that described cell set small area reports, in the group of indicating cell, all communities start Predistribution Algorithms;

In described cell set, all communities calculate described repeating query resource according to described Predistribution Algorithm and respectively report the round-robin order of minizone of the not enough information of edge resource;

The community that reports the not enough information of edge resource in described cell set is used described repeating query resource according to described round-robin order;

Wherein, described reserved resource comprises:

Pre-determine unique repeating query resource;

Or, pre-determine multiple repeating query resources, and the original position of each repeating query resource and included Physical Resource Block number;

Or, pre-determine the number of the included continuous Physical Resource Block of repeating query resource.

2. method according to claim 1, is characterized in that, described public administration entity receives the not enough information of edge resource that described cell set small area reports and specifically comprises:

Public administration entity setting up threshold T h _dyn-start, and configuration is to all communities in cell set;

Edge customer edge resources occupation rate U in Jiang Zhe community, each community in described cell set _edgewith described threshold T h _dyn-startcontrast, work as U _edge> Th _dyn-starttime, this community reports edge resource deficiency to public administration entity.

3. method according to claim 2, is characterized in that, the method further comprises:

After Predistribution Algorithm starts, each community is calculated and is upgraded thresholding Th according to following formula _dyn-update, and with upgrading thresholding Th _dyn-updatesubstitute threshold T h _dyn-start;

${\mathrm{Th}}_{\mathrm{Dyn}-\mathrm{update}}=\frac{{\mathrm{Th}}_{\mathrm{Dyn}-\mathrm{start}}\·n_{\mathrm{PRB}-\mathrm{edge}}}{n_{\mathrm{PRB}-\mathrm{edge}}-\frac{1}{3}{n}_{\mathrm{PRB}}}$

Wherein, n _pRB-edgebefore this Predistribution Algorithm startup, system default is distributed to the PRB number of the edge customer of each community, n _pRBfor the PRB number of repeating query resource.

4. method according to claim 1, it is characterized in that, in the time pre-determining unique repeating query resource, in described cell set, all communities calculate described repeating query resource according to described Predistribution Algorithm and comprise in the round-robin order of the minizone that respectively reports the not enough information of edge resource:

Described public administration entity configures the community serial number information of the cell ID of all edge resource deficiencies and resource repeating query to all communities or by the community serial number information of the cell ID of each edge resource deficiency and resource repeating query and configures to corresponding community separately;

In the time that described public administration entity configures to all communities by the community serial number information of the cell ID of edge resource deficiency and resource repeating query, each community is calculated as follows out the sequence number of current repeating query resource home cell:

Wherein, current TTI is current time, TTI ₀indicate all communities for described public administration entity and start the moment of prefabricated algorithm, T is the time that repeating query resource is applied to each community, n _mfor the number of the not enough community of edge resource in described cell set;

When described public administration entity is when by the community serial number information of the cell ID of each edge resource deficiency and resource repeating query, separately configuration is to corresponding community, whether repeating query Dao Zhe community of current repeating query resource is calculated and rules out in each community by above formula;

In the time that community is not configured the community sequence number of resource repeating query, do not use repeating query resource.

5. method according to claim 1, it is characterized in that, when pre-determining multiple repeating query resources, and when the original position of each repeating query resource and included Physical Resource Block number, in described cell set, all communities calculate described repeating query resource according to described Predistribution Algorithm and comprise in the round-robin order of the minizone that respectively reports the not enough information of edge resource:

Described public administration entity configures the community serial number information of the cell ID of all edge resource deficiencies and resource repeating query to all communities or by the community serial number information of the cell ID of each edge resource deficiency and resource repeating query and configures to corresponding community separately;

In the time that described public administration entity configures to all communities by the community serial number information of the cell ID of edge resource deficiency and resource repeating query, each community is calculated as follows out current repeating query resource:

Wherein, n _rfor the number of repeating query resource;

And be calculated as follows out the sequence number of current repeating query resource home cell:

When described public administration entity is when by the community serial number information of the cell ID of each edge resource deficiency and resource repeating query, separately configuration is to corresponding community, each community is calculated as follows out current repeating query resource:

And be calculated as follows and rule out whether repeating query Dao Zhe community of current repeating query resource:

Wherein, n _mfor the number of the not enough community of edge resource in described cell set;

In the time that community is not configured the community sequence number of resource repeating query, do not use the repeating query resource of the repeating query resource sequence number being calculated as follows out

6. method according to claim 1, it is characterized in that, in the time pre-determining the number of the included continuous Physical Resource Block of repeating query Resource Block, in described cell set, all communities calculate described repeating query resource according to described Predistribution Algorithm and comprise in the round-robin order of the minizone that respectively reports the not enough information of edge resource:

Described public administration entity configures the community sequence number of the cell ID of edge resource deficiency and resource repeating query to all communities in cell set, and selects a random function, and configuration is to all communities in cell set;

Each community in described cell set is also calculated as follows out the sequence number of current repeating query resource home cell:

Each community in described cell set is applied to the initial time of time of community as the input of described random function using repeating query resource, draw the original position of the repeating query Resource Block that current time repeating query Dao community uses by described random function;

Current time not repeating query Dao community is also done corresponding calculating, and the resource block location of result of calculation instruction is vacated, and leaves current repeating query Dao community for and uses.

7. according to the method described in claim 4,5 or 6, it is characterized in that, the method further comprises:

In the time that community is judged as edge resource deficiency, report the not enough information of edge resource to public administration entity;

When the community of former edge resource deficiency is judged as edge resource when enough, report edge resource enough information to public administration entity;

Public administration entity is in the time receiving the not enough information of edge resource and report any in edge resource enough information, upgrade the cell ID of edge resource deficiency and the community sequence number of resource repeating query, and the cell ID of edge resource deficiency and the community sequence number of resource repeating query after upgrading are indicated to all communities in cell set;

Local preservation information is correspondingly upgraded in each community, restarts Predistribution Algorithm, and the moment that the renewal that receives public administration entity is indicated is as Predistribution Algorithm Startup time.

8. method according to claim 7, is characterized in that, the method further comprises:

In the time that all communities in cell set all become the enough community of edge resource, described public administration entity finishes to all communities instruction algorithms in described cell set, and described each community empties local information of preserving.

9. method according to claim 1, is characterized in that, the method further comprises:

The related content of each minizone resource repeating query in cell set is notified the outer adjacent area of group to cell set by public administration entity;

Described group of outer adjacent area according to the information of each minizone resource repeating query in described cell set by current repeating query resource vacate need not, until described Predistribution Algorithm finishes.