CN101964980B - Method and device for coordinating inter-cell interference - Google Patents
Method and device for coordinating inter-cell interference Download PDFInfo
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- CN101964980B CN101964980B CN201010518902A CN201010518902A CN101964980B CN 101964980 B CN101964980 B CN 101964980B CN 201010518902 A CN201010518902 A CN 201010518902A CN 201010518902 A CN201010518902 A CN 201010518902A CN 101964980 B CN101964980 B CN 101964980B
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Abstract
The invention discloses a method and a device for coordinating inter-cell interference. The method comprises the following steps of: receiving an access request initiated by a terminal, wherein the request comprises an identifier of a cell to which the terminal belongs and the attribute information of the terminal; judging whether the terminal is an edge user or not according to the attribute information; and counting the number of edge users in the cell to which the terminal belongs when the terminal is the edge user and decreasing frequency domain resources pre-distributed to the cell to which the terminal belongs and a cell adjacent to the terminal, increasing the shared frequency domain resources pre-distributed to all cells and distributing the increased frequency domain resources shared by all the cells to the terminal when the number of the edge users reaches a first threshold value, wherein the frequency domain resources pre-distributed to the cell to which the terminal belongs are the same as those pre-distributed to the cell adjacent to the terminal and constitute all frequency domain resources together with the shared frequency domain resources pre-distributed to all the cells. The method and the device have the advantages of realizing flexible dispatching of a communication resource and effectively reducing the inter-cell interference.
Description
Technical field
The present invention relates to the communications processing field, more particularly, relate to a kind of inter-cell interference coordination method and device.
Background technology
In follow-on broadband wireless communication network, solve the serious problem of cell edge inter-user interference in the cordless communication network, be a key factor improving transmission quality, improve inter-cell user terminal throughput.
At present, the Inter-Cell Interference Coordination technology that has proposed can be divided three classes: presence of intercell interference randomization, inter-cell interference cancellation, Inter-Cell Interference Coordination/avoidance.
A kind of Inter-Cell Interference Coordination scheme commonly used is based on the static interference coordination technique of soft-frequency reuse.Through neighbor cell being divided into different three types, every type of sub-district is non-conterminous mutually each other, simultaneously frequency domain resource also is divided into the part of three non-overlapping copies.The edge customer of every type of sub-district can use component frequency resource separately respectively, and the central user of all kinds of sub-districts then can be used whole frequency domain resource.
Another kind of Inter-Cell Interference Coordination scheme commonly used is the coordinating semi-static interference technology.In this scheme, community user is divided into central user and edge customer, simultaneously whole frequency domain resource is divided into two parts, operable resource of edge customer and the operable resource of central user.Different along with the ratio of edge customer in the system and central user, the operable resource of edge customer and central user changes thereupon.In this scheme; The operable frequency domain resource of Cell Center User is whole resources to the maximum; But will satisfy the number of edge customer this moment is 0, and the operable maximum frequency domain resource of Cell Edge User is 1/3 of whole resources, is 0 but will satisfy the Cell Center User number this moment.
Through discovering of the application inventor, there is following weak point at least in prior art:
When adopting the static interference coordination technique, because the user moves in real time, the number of Cell Edge User is variable; And the resource of respective cell is fixed; Then along with the increase of certain Cell Edge User number, will cause the resource shortage allocated in advance, thereby cause the edge customer service unreliable;
In addition, when adopting the coordinating semi-static interference technology,, how to carry out appropriate resource allocation so that this problem of utilization of resources maximization becomes key though corresponding the change can be taken place according to user's variation in resource allocation; In addition, not corresponding restriction for the operable resource of each neighbor cell user, thus having caused to a certain degree down, presence of intercell interference still exists.
It is thus clear that prior art can't provide a kind of coordination approach of effective solution presence of intercell interference.
Summary of the invention
In view of this, the embodiment of the invention provides a kind of inter-cell interference coordination method and device, to realize the flexible dispatching to the communication resource, effectively reduces the interference of minizone.
The embodiment of the invention provides a kind of inter-cell interference coordination method, and said method comprises:
The access request that receiving terminal is initiated, described request comprises: the cell ID under the said terminal and the attribute information at said terminal;
Judge according to said attribute information whether said terminal is edge customer;
When said terminal is edge customer; Add up the edge customer number that said terminal affiliated subdistrict comprises; When the edge customer number reaches first threshold; Be reduced to affiliated sub-district, said terminal and the sub-district preallocated frequency domain resource adjacent, increase the frequency domain resource that is pre-assigned to the common use in all sub-districts, and the frequency domain resource of the common use in all sub-districts after will increasing is distributed to said terminal with said terminal;
Wherein, identical for the sub-district under the said terminal with the preallocated frequency domain resource size in the sub-district adjacent with said terminal, constitute whole frequency domain resource jointly with the frequency domain resource that is pre-assigned to the common use in all sub-districts.
Preferably, said method also comprises:
When judging that according to said attribute information said terminal is central user, be the whole frequency domain resource of said terminal distribution.
Preferably, judge that according to said attribute information whether said terminal is edge customer, specifically comprises:
Compare SINR according to Reference Signal Received Power RSRP that carries in the said attribute information and Reference Signal Received Quality RSRQ signal calculated with interference plus noise;
Said SINR and preset gate limit value are compared,, confirm that said terminal is an edge customer as said SINR during less than said preset gate limit value; As said SINR during, confirm that said terminal is a central user greater than said preset gate limit value.
Preferably, said said SINR and preset gate limit value are compared, specifically comprise:
Said SINR and the first threshold value SINR1 and the second threshold value SINR2 that preset are compared, and wherein, SINR1 is less than SINR2;
As said SINR during, confirm that said terminal is an edge customer less than said SINR1;
As said SINR during, confirm that said terminal is a central user greater than said SINR2;
When said SINR is between SINR1 and SINR2, before keeping to the determined property at said terminal.
Preferably, said method also comprises:
The priority that the affiliated preallocated frequency domain resource in sub-district in said terminal is set is 1; The priority that setting is pre-assigned to the common frequency domain resource of using in all sub-districts is 2; The priority that remaining frequency domain resource is set is 3, is the corresponding frequency domain resource of said terminal distribution according to the attribute at said terminal according to the priority orders of frequency domain resource.
A kind of Inter-Cell Interference Coordination device, said device comprises:
Receiver module is used for the access request that receiving terminal is initiated, and described request comprises: the cell ID under the said terminal and the attribute information at said terminal;
Judge module is used for judging according to said attribute information whether said terminal is edge customer;
Coordination module; Be used for when said terminal is edge customer; Add up the edge customer number that said terminal affiliated subdistrict comprises, when the edge customer number reaches first threshold, be reduced to affiliated sub-district, said terminal and the sub-district preallocated frequency domain resource adjacent with said terminal; Increase the frequency domain resource that is pre-assigned to the common use in all sub-districts, and the common frequency domain resource of using in all sub-districts after will increasing is distributed to said terminal;
Wherein, identical for the sub-district under the said terminal with the preallocated frequency domain resource size in the sub-district adjacent with said terminal, constitute whole frequency domain resource jointly with the frequency domain resource that is pre-assigned to the common use in all sub-districts.
Preferably, said Coordination module also is used for:
When judging that according to said attribute information said terminal is central user, be the whole frequency domain resource of said terminal distribution.
Preferably, said judge module compares SINR according to Reference Signal Received Power RSRP that carries in the said attribute information and Reference Signal Received Quality RSRQ signal calculated with interference plus noise; Said SINR and preset gate limit value are compared,, confirm that said terminal is an edge customer as said SINR during less than said preset gate limit value; As said SINR during, confirm that said terminal is a central user greater than said preset gate limit value.
Preferably, said judge module also is used to preset the first threshold value SINR1 and the second threshold value SINR2, and said SINR and the first threshold value SINR1 and the second threshold value SINR2 that preset are compared, and wherein, SINR1 is less than SINR2;
As said SINR during, confirm that said terminal is an edge customer less than said SINR1;
As said SINR during, confirm that said terminal is a central user greater than said SINR2;
When said SINR is between SINR1 and SINR2, before keeping to the determined property at said terminal.
Preferably, said Coordination module also is used for:
The priority that the affiliated preallocated frequency domain resource in sub-district in said terminal is set is 1; The priority that setting is pre-assigned to the common frequency domain resource of using in all sub-districts is 2; The priority that remaining frequency domain resource is set is 3, is the corresponding frequency domain resource of said terminal distribution according to the attribute at said terminal according to the priority orders of frequency domain resource.
Compare with prior art; Technical scheme provided by the invention can be according to the distribution of the corresponding adjustment frequency domain resource of the attribute change that accesses terminal, when the Cell Edge User number increases through semi-static resource allocation; The operable resource of Cell Edge User also increases accordingly to some extent; Guarantee the available resources of edge customer, guaranteed the performance of edge customer simultaneously, avoided the interference problem that possibly occur between the edge customer.
Description of drawings
In order to be illustrated more clearly in the technical scheme of the embodiment of the invention; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
A kind of inter-cell interference coordination method schematic flow sheet that Fig. 1 provides for the embodiment of the invention;
The another kind of inter-cell interference coordination method schematic flow sheet that Fig. 2 provides for the embodiment of the invention;
The cell classification sketch map that Fig. 3 provides for the embodiment of the invention;
A kind of Inter-Cell Interference Coordination apparatus structure sketch map that Fig. 4 provides for the embodiment of the invention.
Embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
Existing system of broadband wireless communication has proposed very high requirement requiring frequency spectrum resource to utilize under the maximized prerequisite to the performance of improving edge customer.Therefore, the embodiment of the invention promotes marginal user performance through Inter-Cell Interference Coordination under the prerequisite that guarantees systematic function.Controlling the user through resource allocation uses different resources or resource making in various degree is used for avoiding or reducing the interference between the sub-district.
At first a kind of inter-cell interference coordination method provided by the invention is described, with reference to shown in Figure 1, said method comprises:
The access request that step 101, receiving terminal are initiated, described request comprises: the cell ID under the said terminal and the attribute information at said terminal;
Wherein, identical for the sub-district under the said terminal with the preallocated frequency domain resource size in the sub-district adjacent with said terminal, constitute whole frequency domain resource jointly with the frequency domain resource that is pre-assigned to the common use in all sub-districts.
In the embodiment of the invention,, be every type of frequency domain resource that sub-district preassignment is certain, and the frequency domain resource that every type of sub-district is pre-assigned to is identical according to the classification of sub-district, and the frequency domain resource that residual resource in whole frequency domain resource can be used as all sub-districts jointly.Through semi-static resource allocation; According to the distribution of the corresponding adjustment frequency domain resource of the attribute change that accesses terminal, when the Cell Edge User number increases, be reduced to affiliated sub-district, said terminal and the sub-district preallocated frequency domain resource adjacent with said terminal; Increase and be pre-assigned to the common frequency domain resource of using in all sub-districts; And the common frequency domain resource of using in all sub-districts after will increasing distributes to said terminal, can increase the operable resource of Cell Edge User, guaranteed the available resources of edge customer; Guarantee the performance of edge customer simultaneously, avoided the interference problem that possibly occur between the edge customer.
In another preferred embodiment of the present invention, as shown in Figure 2, inter-cell interference coordination method can also comprise the steps:
Need to prove that the execution sequence of step 104 and step 103 does not have strict restriction, can first execution in step 104, execution in step 103. again
Need to prove; The terminal of judge to initiate inserting request be edge customer still be central user be to confirm according to the attribute information that carry when the initiation request at this terminal; This attribute information generally includes: Reference Signal Received Power (Reference Signal Received Power; RSRP) and Reference Signal Received Quality (Reference Signal Received Quality; RSRQ), RSRP that carries during according to the terminal initiation request and RSRQ can calculate Signal to Interference plus Noise Ratio (Signal to Interference plus Noise Ratio, SINR).Usually, the corresponding SINR threshold value that presets compares said SINR and preset gate limit value, as said SINR during less than said preset gate limit value, confirms that said terminal is an edge customer; As said SINR during, confirm that said terminal is a central user greater than said preset gate limit value.
In order to improve the accuracy that terminal attribute is judged, in the embodiment of the invention, be provided with two SINR threshold values: the first threshold value SINR1 and the second threshold value SINR2, wherein, SINR1 is less than SINR2; As said SINR during, confirm that said terminal is an edge customer less than said SINR1; As said SINR during, confirm that said terminal is a central user greater than said SINR2; When said SINR is between SINR1 and SINR2, before keeping to the determined property at said terminal.Adopt two threshold values to come the common attribute of judging the terminal, avoided single threshold value to judge the one-sidedness that causes.When SINR was between SINR1 and SINR2, the terminal attribute before keeping judged that when this terminal was central user before, current attribute was still confirmed as central user; When this terminal was edge customer before, current attribute was still confirmed as edge customer.Need to prove that as user during at initial access network, the attribute at terminal is set to central user usually, afterwards in each measuring period, the property value of uploading according to this terminal calculates the SINR value and judges this terminal attribute of this moment.According to the attribute at terminal, finally can draw the number of central user and edge customer in the sub-district.
Those skilled in the art when the real-time embodiment of the invention, confirming and can confirm that the present invention no longer gives unnecessary details at this for two SINR threshold values through concrete emulation.
In the embodiment of the invention; The priority that the affiliated preallocated frequency domain resource in sub-district in said terminal is set is 1; The priority that setting is pre-assigned to the common frequency domain resource of using in all sub-districts is 2; The priority that remaining frequency domain resource is set is 3, is the corresponding frequency domain resource of said terminal distribution according to the attribute at said terminal according to the priority orders of frequency domain resource.
In the frequency domain resource of each priority level, adopt the method for equitable proportion to carry out scheduling of resource, the equitable proportion algorithm is existing packet scheduling algorithm, in scheduling, has taken into account user's the fairness and the throughput of system.In priority is 1 frequency domain resource, in the time of can not being met for one of them business of edge customer or central user, then, priority continues the edge customer and the method for central user employing equitable proportion are carried out scheduling of resource on being 2 frequency domain resource.When still can not be met for the business at the surplus family of central user and edge this moment, then begin dispatching priority and be 3 frequency domain resource.
When Cell Center User when to use priority be 1 frequency domain resource and the resource non-overlapping copies that can use of neighbor cell edge customer, there is not presence of intercell interference this moment.When the center user when to use priority be 2 frequency domain resource and neighbor cell edge customer available resources priority be 2 overlap, exist presence of intercell interference this moment, but probability is less.When the center user uses priority is that 3 frequency domain resource and neighbor cell edge customer available resources priority are 1 overlap, and possibly exist certain interference this moment;
And, do not have presence of intercell interference this moment when Serving cell edge customer when to use priority be 1 frequency domain resource and neighbor cell edge customer available resources non-overlapping copies.When edge customer when to use priority be 2 resource D and neighbor cell available resources priority be 2 overlap, exist presence of intercell interference this moment, but probability is less.
This shows, divide through carrying out priority for the available frequency domain resource, can guarantee when neighbor cell in the time can using the same frequency resource, because the difference of use priority can be avoided the interference that possibly occur each other as much as possible.
In a word, the embodiment of the invention limits each user the difference of frequency domain resource is used rank through frequency domain resource priority is divided; Can guarantee that Cell Edge User and central user are under the prerequisite that enough available frequency domain resources are arranged; Avoid occurring each other disturbing, thereby guaranteed the performance of central user on the one hand, also improved the performance and the reliability of service thereof of edge customer on the one hand; Simultaneously reduce presence of intercell interference again, guaranteed the performance of whole system.
Through a concrete application example, embodiment of the invention technical scheme is elaborated below.
As shown in Figure 3, be example with 7 cell systems, 7 sub-districts are divided three classes: 1,2,3.Identical frequency domain resource (because similar sub-district is non-conterminous mutually, the presence of intercell interference of using identical frequency domain resource to cause can be ignored) can be used in similar sub-district.
Suppose whole frequency domain can with resource size be N, all frequency domain resource are divided into four part: A, B, C, D.Frequency domain resource A is the resource of 1 type of cell-specific, and frequency domain resource B is the resource of 2 types of cell-specific, and frequency domain resource C is the resource of 3 types of cell-specific, and frequency domain resource D is three types of resources that the sub-district can be used jointly.
The size of setting frequency domain resource A, B, C is identical.This be because, say that from function A, B, C are the resources of classification cell-specific separately, for the A for 1 type of sub-district with for B for 2 types of sub-districts and the C for 3 types of sub-districts, be actually the same.So in the embodiment of the invention, the size of setting A, B, C is the same.If establishing the size of frequency domain resource A is X, the size of B and C also is X so, and the size of D then is (N-3X).X representes Resource Block (Resource Block, number RB) here.
In all frequency domain resource, for 1 type of sub-district, central user can be used whole frequency domain resource N, and edge customer can use part frequency domain resource A+D, i.e. (X+N-3X)=(N-2X).Can be found out that by this formula will make that the operable frequency domain resource of edge customer increases in this sub-district, the value of X will reduce accordingly, other cell conditions are identical.
In the sub-district edge customer number more after a little while, the X value is bigger, the value of the corresponding operable resource of edge customer (N-2X) is less.In this programme; The definition X value be
to the maximum at this moment, the size of A be
D size is
When the edge customer number increased relatively, the X value diminished, and it is big that the value of the operable resource of corresponding edge user (N-2X) becomes.In this programme; The definition X intermediate value is
at this moment; The size of A be
D size for
definition X intermediate value the time; Can confirm that the present invention does not do qualification to this according to actual scene.
When the edge customer number increased certain value, the X value was minimum, and the value of the operable resource of corresponding edge user (N-2X) is maximum; In this programme, the minimum value of definition X is X3=0, at this moment; The size of A is 0; The size of D is N, promptly when edge customer is increased to significantly, can use whole frequency domain resource.
With Long Term Evolution (Long-Term Evolution, LTE) system is an example, the band width configuration value of this system can be 1.4MHZ; Stipulate according to system protocol; When this bandwidth value, system can with frequency domain resource be 6 RB, the value of X is respectively under then above-mentioned three kinds of situations: X1=2; X2=1, X3=0.With X=1 is example, establishes all RB and is divided into RB1～RB6 in order, then gets RB1 in order corresponding to A, and RB2～RB4 is corresponding to D, and RB5 is corresponding to B, and RB6 is corresponding to C.Then for 1 type of sub-district, the priority of RB1 is 1, and the priority of RB2～RB4 is 2, and the priority of RB5～RB6 is 3.
Corresponding above-mentioned inter-cell interference coordination method embodiment, the present invention also provides a kind of Inter-Cell Interference Coordination device, and is as shown in Figure 4, and said device comprises:
Wherein, identical for the sub-district under the said terminal with the preallocated frequency domain resource size in the sub-district adjacent with said terminal, constitute whole frequency domain resource jointly with the frequency domain resource that is pre-assigned to the common use in all sub-districts.
In the embodiment of the invention,, be every type of frequency domain resource that sub-district preassignment is certain, and the frequency domain resource that every type of sub-district is pre-assigned to is identical according to the classification of sub-district, and the frequency domain resource that residual resource in whole frequency domain resource can be used as all sub-districts jointly.Through semi-static resource allocation; According to the distribution of the corresponding adjustment frequency domain resource of the attribute change that accesses terminal, when the Cell Edge User number increases, be reduced to affiliated sub-district, said terminal and the sub-district preallocated frequency domain resource adjacent with said terminal; Increase and be pre-assigned to the common frequency domain resource of using in all sub-districts; And the common frequency domain resource of using in all sub-districts after will increasing distributes to said terminal, can increase the operable resource of Cell Edge User, guaranteed the available resources of edge customer; Guarantee the performance of edge customer simultaneously, avoided the interference problem that possibly occur between the edge customer.
Need to prove that said Coordination module also is used for:
When judging that according to said attribute information said terminal is central user, be the whole frequency domain resource of said terminal distribution.
In addition, said judge module compares SINR according to Reference Signal Received Power RSRP that carries in the said attribute information and Reference Signal Received Quality RSRQ signal calculated with interference plus noise; Said SINR and preset gate limit value are compared,, confirm that said terminal is an edge customer as said SINR during less than said preset gate limit value; As said SINR during, confirm that said terminal is a central user greater than said preset gate limit value.
In order to improve the accuracy that terminal attribute is judged; Said judge module also is used to preset the first threshold value SINR1 and the second threshold value SINR2; Said SINR and the first threshold value SINR1 and the second threshold value SINR2 that preset are compared, and wherein, SINR1 is less than SINR2;
As said SINR during, confirm that said terminal is an edge customer less than said SINR1;
As said SINR during, confirm that said terminal is a central user greater than said SINR2;
When said SINR is between SINR1 and SINR2, before keeping to the determined property at said terminal.
According to the attribute at terminal, said judge module finally can draw the number of central user and edge customer in the sub-district.
In another preferred embodiment of the present invention, said Coordination module also is used for:
The priority that the affiliated preallocated frequency domain resource in sub-district in said terminal is set is 1; The priority that setting is pre-assigned to the common frequency domain resource of using in all sub-districts is 2; The priority that remaining frequency domain resource is set is 3, is the corresponding frequency domain resource of said terminal distribution according to the attribute at said terminal according to the priority orders of frequency domain resource.
In the frequency domain resource of each priority level, adopt the method for equitable proportion to carry out scheduling of resource, the equitable proportion algorithm is existing packet scheduling algorithm, in scheduling, has taken into account user's the fairness and the throughput of system.In priority is 1 frequency domain resource, in the time of can not being met for one of them business of edge customer or central user, then, priority continues the edge customer and the method for central user employing equitable proportion are carried out scheduling of resource on being 2 frequency domain resource.When still can not be met for the business at the surplus family of central user and edge this moment, then begin dispatching priority and be 3 frequency domain resource.
Divide through carrying out priority for the available frequency domain resource, can guarantee when neighbor cell in the time can using the same frequency resource, because the difference of use priority can be avoided the interference that possibly occur each other as much as possible.
For device embodiment, because it is basically corresponding to method embodiment, so describe fairly simplely, relevant part gets final product referring to the part explanation of method embodiment.Device embodiment described above only is schematic; Wherein said unit as the separating component explanation can or can not be physically to separate also; The parts that show as the unit can be or can not be physical locations also; Promptly can be positioned at a place, perhaps also can be distributed on a plurality of NEs.Can realize the purpose of present embodiment scheme according to the needs selection some or all of module wherein of reality.Those of ordinary skills promptly can understand and implement under the situation of not paying creative work.
One of ordinary skill in the art will appreciate that all or part of flow process that realizes in the foregoing description method; Be to instruct relevant hardware to accomplish through computer program; Described program can be stored in the computer read/write memory medium; This program can comprise the flow process like the embodiment of above-mentioned each side method when carrying out.Wherein, described storage medium can be magnetic disc, CD, read-only storage memory body (Read-Only Memory, ROM) or at random store memory body (Random Access Memory, RAM) etc.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined General Principle can realize under the situation of spirit that does not break away from the embodiment of the invention or scope in other embodiments among this paper.Therefore, the embodiment of the invention will can not be restricted to these embodiment shown in this paper, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (10)
1. an inter-cell interference coordination method is characterized in that, said method comprises:
The access request that receiving terminal is initiated, described request comprises: the cell ID under the said terminal and the attribute information at said terminal;
Judge according to said attribute information whether said terminal is edge customer;
When said terminal is edge customer; Add up the edge customer number that said terminal affiliated subdistrict comprises; When the edge customer number reaches first threshold; Be reduced to affiliated sub-district, said terminal and the sub-district preallocated frequency domain resource adjacent, increase the frequency domain resource that is pre-assigned to the common use in all sub-districts, and the frequency domain resource of the common use in all sub-districts after will increasing is distributed to said terminal with said terminal;
Wherein, identical for the sub-district under the said terminal with the preallocated frequency domain resource size in the sub-district adjacent with said terminal, constitute whole frequency domain resource jointly with the frequency domain resource that is pre-assigned to the common use in all sub-districts.
2. inter-cell interference coordination method according to claim 1 is characterized in that, said method also comprises:
When judging that according to said attribute information said terminal is central user, be the whole frequency domain resource of said terminal distribution.
3. inter-cell interference coordination method according to claim 1 is characterized in that, judges that according to said attribute information whether said terminal is edge customer, specifically comprises:
Compare SINR according to Reference Signal Received Power RSRP that carries in the said attribute information and Reference Signal Received Quality RSRQ signal calculated with interference plus noise;
Said SINR and preset gate limit value are compared,, confirm that said terminal is an edge customer as said SINR during less than said preset gate limit value; As said SINR during, confirm that said terminal is a central user greater than said preset gate limit value.
4. inter-cell interference coordination method according to claim 3 is characterized in that, said said SINR and preset gate limit value is compared, and specifically comprises:
Said SINR and the first threshold value SINR1 and the second threshold value SINR2 that preset are compared, and wherein, SINR1 is less than SINR2;
As said SINR during, confirm that said terminal is an edge customer less than said SINR1;
As said SINR during, confirm that said terminal is a central user greater than said SINR2;
When said SINR is between SINR1 and SINR2, before keeping to the determined property at said terminal.
5. inter-cell interference coordination method according to claim 4 is characterized in that, said method also comprises:
The priority that the affiliated preallocated frequency domain resource in sub-district in said terminal is set is 1; The priority that setting is pre-assigned to the common frequency domain resource of using in all sub-districts is 2; The priority that remaining frequency domain resource is set is 3, is the corresponding frequency domain resource of said terminal distribution according to the attribute at said terminal according to the priority orders of frequency domain resource.
6. an Inter-Cell Interference Coordination device is characterized in that, said device comprises:
Receiver module is used for the access request that receiving terminal is initiated, and described request comprises: the cell ID under the said terminal and the attribute information at said terminal;
Judge module is used for judging according to said attribute information whether said terminal is edge customer;
Coordination module; Be used for when said terminal is edge customer; Add up the edge customer number that said terminal affiliated subdistrict comprises, when the edge customer number reaches first threshold, be reduced to affiliated sub-district, said terminal and the sub-district preallocated frequency domain resource adjacent with said terminal; Increase the frequency domain resource that is pre-assigned to the common use in all sub-districts, and the common frequency domain resource of using in all sub-districts after will increasing is distributed to said terminal;
Wherein, identical for the sub-district under the said terminal with the preallocated frequency domain resource size in the sub-district adjacent with said terminal, constitute whole frequency domain resource jointly with the frequency domain resource that is pre-assigned to the common use in all sub-districts.
7. Inter-Cell Interference Coordination device according to claim 6 is characterized in that, said Coordination module also is used for:
When judging that according to said attribute information said terminal is central user, be the whole frequency domain resource of said terminal distribution.
8. Inter-Cell Interference Coordination device according to claim 6 is characterized in that, said judge module compares SINR according to Reference Signal Received Power RSRP that carries in the said attribute information and Reference Signal Received Quality RSRQ signal calculated with interference plus noise; Said SINR and preset gate limit value are compared,, confirm that said terminal is an edge customer as said SINR during less than said preset gate limit value; As said SINR during, confirm that said terminal is a central user greater than said preset gate limit value.
9. Inter-Cell Interference Coordination device according to claim 8; It is characterized in that; Said judge module also is used to preset the first threshold value SINR1 and the second threshold value SINR2; Said SINR and the first threshold value SINR1 and the second threshold value SINR2 that preset are compared, and wherein, SINR1 is less than SINR2;
As said SINR during, confirm that said terminal is an edge customer less than said SINR1;
As said SINR during, confirm that said terminal is a central user greater than said SINR2;
When said SINR is between SINR1 and SINR2, before keeping to the determined property at said terminal.
10. Inter-Cell Interference Coordination device according to claim 9 is characterized in that, said Coordination module also is used for:
The priority that the affiliated preallocated frequency domain resource in sub-district in said terminal is set is 1; The priority that setting is pre-assigned to the common frequency domain resource of using in all sub-districts is 2; The priority that remaining frequency domain resource is set is 3, is the corresponding frequency domain resource of said terminal distribution according to the attribute at said terminal according to the priority orders of frequency domain resource.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010518902A CN101964980B (en) | 2010-10-25 | 2010-10-25 | Method and device for coordinating inter-cell interference |
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| EP2676481B1 (en) | 2011-02-16 | 2019-09-25 | BlackBerry Limited | Ue measurement procedure in a heterogeneous mobile network |
| CN103096446A (en) * | 2011-11-03 | 2013-05-08 | 上海贝尔股份有限公司 | Method and equipment for coordinating physical downlink control channel (PDCCH) power between communities |
| CN102769861B (en) * | 2012-06-27 | 2015-04-08 | 华为技术有限公司 | User attribute determining method, inter-cell interference coordination method and base station |
| CN103987080B (en) * | 2014-05-28 | 2018-05-29 | 京信通信系统（中国）有限公司 | The definite method and base station equipment of a kind of edge customer |
| CN105992359B (en) * | 2015-02-16 | 2019-09-13 | 华为技术有限公司 | Resource allocation methods and device |
| CN105307272B (en) * | 2015-08-31 | 2018-10-02 | 中国联合网络通信集团有限公司 | A kind of inter-cell interference coordination method, macro base station and micro-base station |
| CN106879028A (en) * | 2015-12-14 | 2017-06-20 | 中兴通讯股份有限公司 | A kind of resource multiplexing method and base station |
| CN105554772A (en) * | 2016-01-20 | 2016-05-04 | 江苏省邮电规划设计院有限责任公司 | LTE (Long Term Evolution) system interference coordination method |
| CN108882243A (en) * | 2017-05-10 | 2018-11-23 | 索尼公司 | For the electronic equipment of wireless communication system, method and storage medium |
| CN107947890B (en) * | 2017-11-14 | 2019-07-02 | 京信通信系统（中国）有限公司 | A kind of inter-cell interference coordination method and the network equipment |
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