CN103249134A

CN103249134A - Coordinating method and system for inter-cell uplink interferences

Info

Publication number: CN103249134A
Application number: CN2012100315727A
Authority: CN
Inventors: 李卫敏; 刘锟; 鲁照华; 罗薇
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2012-02-13
Filing date: 2012-02-13
Publication date: 2013-08-14

Abstract

The invention discloses a coordinating method and system for inter-cell uplink interferences. The method comprises the following steps: when the interference coordinating time of UL HII (up link high interference indicator) arrives, a base station executes interference coordinating operations based on resource priority, adjusts scheduling resource and/or transmitting power according to acquired HII indicator and/or uplink interference overload indicator sent by a neighbor cell site; and when the OI indicator interference coordinating time arrives, the base station executes interference coordinating operation based on user scheduling performance according to acquired OI indicator sent by the neighbor cell site. After the adoption of the invention, scheduling resources at user terminals of neighbor cell sites can be coordinated, the emissive power at the terminal is controlled, the inter-cell interference strength can be lowered, and the system performance is improved.

Description

The coordination approach of inter-cell uplink interference and system

Technical field

The present invention relates to the communications field, relate in particular to a kind of coordination approach and system of inter-cell uplink interference.

Background technology

In cell mobile communication systems, meeting phase mutual interference between the user terminal of use same frequency resources in each residential quarter (User Equipment is called for short UE) produces presence of intercell interference, thereby has a strong impact on power system capacity and covering.

The Inter-Cell Interference Coordination technology is avoided distributing identical resource to the edge customer of neighbor cell, and the transmitting power of user terminal is controlled by the scheduling resource of adjacent a plurality of community user terminals is coordinated, and can effectively reduce presence of intercell interference.

3GPP (The 3rd Generation Partnership Project, the plan of third generation partner program) E-UTRAN (Evolved Universal Terrestrial Radio Access Network, the universal terrestrial access network of evolution) technical specification has defined adjacent evolution base station (evolved Node B, abbreviate eNB as) between mutual up high interference indication (UL High Interference Indicator, abbreviate HII as) and the mode of uplink interference overload indication (UL Interference Overload Indicator abbreviates OI as) realize the Inter-Cell Interference Coordination technology.In this technical specification, at first cell available resources is divided into N Resource Block (Resource Block abbreviates RB as), index is respectively RB 0, and RB 1 ..., RB N-1; Generate HII indication and/or OI indication at the RB index then, wherein, the value of HII indication can be " 1 " or " 0 ", " 1 " expression high interference susceptibility, the low susceptibility that disturbs of " 0 " expression; The value of OI indication can be " strong jamming (high interference) ", " common interference (medium interference) " or " weak jamming (low interference) ", represents that respectively the interference that is subjected to interference interference moderate or that be subjected to big, that be subjected to is less; The base station sends to the target adjacent base station to the HII indication that generates, and the OI indication that generates is sent to adjacent base station; Interference coordination is carried out according to the HII indication of receiving and/or OI indication in each base station.

HII indication form is shown in Fig. 1 (a).Shown in Fig. 1 (b), residential quarter 1, residential quarter 2 and residential quarter 3 be neighbor cell each other, and wherein, the target neighbor cell of residential quarter 1 comprises residential quarter 2 and residential quarter 3, and the serving BS of residential quarter 1 sends to residential quarter 2 and residential quarter 3 with corresponding HII indication; The target neighbor cell of residential quarter 2 is residential quarter 3, and the serving BS of residential quarter 2 sends to residential quarter 3 with corresponding HII indication; The target neighbor cell of residential quarter 3 is residential quarter 1, and the serving BS of residential quarter 3 sends to residential quarter 1 with corresponding HII indication.

OI indication form is shown in Fig. 2 (a).Shown in Fig. 2 (b), residential quarter 1, residential quarter 2 and residential quarter 3 be neighbor cell each other, and the serving BS of each residential quarter all can send the OI indication of this residential quarter to other two residential quarters in these three residential quarters.

Summary of the invention

The invention provides a kind of inter-cell uplink interference coordination approach and system, to reduce presence of intercell interference, improve systematic function.

For addressing the above problem, the invention provides a kind of inter-cell uplink interference coordination approach, be applied to comprise in the base station:

When up high interference indicates (HII indication) when interference coordination arrives constantly, HII indication and/or uplink interference overload indication (OI indication) that described base station sends according to the neighbor cell base station that has got access to, execution is adjusted scheduling resource and/or the transmitting power of user terminal based on the interference coordination operation of resource prioritization; When OI indication interference coordination arrived constantly, the interference coordination operation based on user's scheduling performance was carried out according to the OI indication that the neighbor cell base station that has got access to sends in described base station, adjusts scheduling resource and/or the transmitting power of user terminal.

Further,

In cycle, comprise a described HII indication interference coordination at least constantly and a described OI indication interference coordination moment at each base station scheduling.

Further,

All equate in per two the adjacent time intervals of HII indication interference coordinations between the moment of each base station scheduling in the cycle;

All equate in per two the adjacent time intervals of OI indication interference coordinations between the moment of each base station scheduling in the cycle or in per two adjacent HII indicate the time intervals in the interference coordinations moment, and indicate the time intervals of interference coordinations between the moment smaller or equal to per two adjacent HII.

Further,

The resource prioritization difference of distributing for the same asset of neighbor cell; Wherein, the resource prioritization of the same asset of neighbor cell is configured by upper strata webmaster unification, perhaps is configured according to default rule by the identification information of each cell base station according to this residential quarter.

Further,

Described execution specifically comprises based on the interference coordination operation of resource prioritization:

Described base station is if judge the HII indication that it has received that other neighbor cell base station send, and sent the HII indication to this neighbor cell base station, then for certain resource, if described base station receives that the HII indication that this neighbor cell base station sends is " 1 " in the value of this resource correspondence position, and the HII indication that described base station sends to this neighbor cell base station also is " 1 " in the value of this resource correspondence position, and then described base station further is judged as the resource prioritization that this resource on this base station distributes and whether is lower than the resource prioritization that distributes for this resource on the described neighbor cell base station; If be lower than, then operate the dispatched users operation dispatching resource adjustment on this resource described base station; If be greater than or equal to, then described base station arranges the interference coordination sign to the dispatched users on this resource, and under the situation that the transmitting power of judging this dispatched users can improve, this dispatched users is arranged the big step-length of transmitting power improve sign.

Further,

Described execution specifically comprises based on the interference coordination operation of user's scheduling performance:

Described base station when the value of certain resource correspondence position is " strong jamming ", is judged strong interferers or common interference source that its dispatched users on this resource is this neighbor cell in the OI indication of judging its neighbor cell base station transmission of receiving; If strong interferers, and described base station does not arrange the interference coordination sign to this dispatched users, then described base station judges further whether the scheduling performance of this dispatched users is not less than the scheduling performance threshold value that sets in advance, if be not less than, then described base station arranges transmitting power big step-length reduction sign and interference coordination sign to this dispatched users; If be lower than, then described base station is to this dispatched users operation dispatching resource adjustment operation; And if scheduling resource is adjusted operation failure, then described base station arranges the long reduction sign of transmitting power small step to this dispatched users, and this dispatched users is arranged the interference coordination sign; If common interference source, and described base station does not arrange the interference coordination sign to this dispatched users, then described base station is not less than at the scheduling performance of judging this dispatched users under the situation of the scheduling performance threshold value that sets in advance, and this dispatched users is arranged long sign and the interference coordination sign of reducing of transmitting power small step.

Further,

Described execution also comprises based on the interference coordination operation of user's scheduling performance:

Indicate when the value of certain resource correspondence position is " weak jamming " at the OI that judges its neighbor cell base station transmission of receiving described base station, judge whether it is provided with the interference coordination sign to the dispatched users on this resource, if do not arrange, then described base station judges whether the transmitting power of this dispatched users can improve, if can improve, then described base station judges whether this dispatched users is Cell Center User, if Cell Center User, then described base station arranges the big step-length raising of transmitting power sign to this dispatched users; If not Cell Center User, then described base station arranges the long sign that improves of transmitting power small step to this dispatched users.

Further, described method also comprises:

Described base station obtains the interior scheduling performance of Serving cell and is lower than the scheduling performance threshold value that sets in advance and the dispatched users that the interference coordination sign is not set;

For each dispatched users that gets access to, described base station judges whether the transmitting power of this dispatched users can improve, if can improve, then described base station arranges the big step-length raising of transmitting power sign to this dispatched users; If can not improve, then described base station is to this dispatched users operation dispatching resource adjustment operation.

Further,

Described base station specifically comprises dispatched users operation dispatching resource adjustment operation:

Described base station is judged when having idling-resource in the Serving cell, obtain the OI that neighbor cell base station sends in the idling-resource and be designated as the resource of " weak jamming " and the resource that dispatched users to be adjusted scheduling performance when these resource scheduling is greater than or equal to the scheduling performance threshold value that sets in advance, therefrom select the resource to dispatched users best performance to be adjusted, distribute to this dispatched users to be adjusted, discharge the original scheduling resource of this dispatched users to be adjusted simultaneously, and for this dispatched users to be adjusted the interference coordination sign is set;

There is not idling-resource in described base station or does not have suitable idling-resource as judging in the Serving cell, then obtain neighbor cell base station sends in the scheduling resource of other users in the Serving cell OI indicated value is greater than or equal to the scheduling performance threshold value that sets in advance for the resource of " weak jamming " and dispatched users to be adjusted scheduling performance when these resources scheduling resource and corresponding dispatched users thereof, dispatched users on these resources scheduling performance when the dispatched users scheduling resource to be adjusted scheduling is greater than or equal to the dispatched users of the scheduling performance threshold value that sets in advance and corresponding scheduling resource thereof as alternative adjustment user and alternative adjustment resource, select in the alternative adjustment resource resource and corresponding alternative adjustment user thereof to dispatched users best performance to be adjusted, the scheduling resource of two dispatched users of exchange, and be that two dispatched users arrange the interference coordination sign respectively.

Further,

The described transmitting power of judging this dispatched users can improve, and specifically comprises:

The Modulation and Coding Scheme grade that the transmitting power of judging this dispatched users does not reach maximum transmission power or judges this dispatched users does not reach highest ranking.

Further,

Described user's scheduling performance comprises one or more in the following parameter: the signal interference ratio of the Signal to Interference plus Noise Ratio of dispatched users, the signal to noise ratio of dispatched users, dispatched users and the Modulation and Coding Scheme grade of dispatched users.

Further,

Described strong interferers and common interference source are that described base station is judged according to Serving cell and/or the neighbor cell Reference Signal Received Power of terminal survey report.

Further,

Described Cell Center User is that described base station is judged according to Serving cell and/or the neighbor cell Reference Signal Received Power of terminal survey report.

Further, described method also comprises:

User emission power is adjusted according to power adjustment sign in described base station, and described power adjustment sign comprises the big step-length reduction of transmitting power sign, long sign, transmitting power big step-length raising sign and the long sign that improves of transmitting power small step of reducing of transmitting power small step;

User's scheduling and transfer of data are carried out according to the interference coordination result in described base station, and described interference coordination result comprises user's scheduling resource and user emission power.

Correspondingly, the present invention also provides a kind of inter-cell uplink interference coherent system, is applied to comprise in the base station:

First adjustment unit, be used for indicating (HII indication) when interference coordination arrives constantly when up high interference, indicate (OI indication) according to HII indication and/or uplink interference overload that the neighbor cell base station that has got access to sends, execution is adjusted scheduling resource and/or the transmitting power of user terminal based on the interference coordination operation of resource prioritization;

Second adjustment unit is used for when OI indication interference coordination arrives constantly, according to the OI indication that the neighbor cell base station that has got access to sends, carries out the interference coordination operation based on user's scheduling performance, adjusts scheduling resource and/or the transmitting power of user terminal.

Further,

The resource prioritization difference of distributing for the same asset of neighbor cell; Wherein, the resource prioritization of the same asset of neighbor cell is configured by upper strata webmaster unification, perhaps is configured according to default rule by the identification information of the allocation units in each cell base station according to this residential quarter;

Described first adjustment unit is used for carrying out the interference coordination operation based on resource prioritization, specifically comprises:

Described first adjustment unit is if judge the HII indication that it has received that other neighbor cell base station send, and sent the HII indication to this neighbor cell base station, then for certain resource, if described first adjustment unit receives that the HII indication that this neighbor cell base station sends is " 1 " in the value of this resource correspondence position, and the HII indication that described first adjustment unit sends to this neighbor cell base station also is " 1 " in the value of this resource correspondence position, and then described first adjustment unit further is judged as the resource prioritization that this resource on this base station distributes and whether is lower than the resource prioritization that distributes for this resource on the described neighbor cell base station; If be lower than, then described first adjustment unit is operated the dispatched users operation dispatching resource adjustment on this resource; If be greater than or equal to, then described first adjustment unit arranges the interference coordination sign to the dispatched users on this resource, and under the situation that the transmitting power of judging this dispatched users can improve, this dispatched users is arranged the big step-length of transmitting power improve sign.

Further,

Described second adjustment unit is used for carrying out the interference coordination operation based on user's scheduling performance, specifically comprises:

Described second adjustment unit when the value of certain resource correspondence position is " strong jamming ", is judged strong interferers or common interference source that its dispatched users on this resource is this neighbor cell in the OI indication of judging its neighbor cell base station transmission of receiving; If strong interferers, and described second adjustment unit does not arrange the interference coordination sign to this dispatched users, then described second adjustment unit judges further whether the scheduling performance of this dispatched users is not less than the scheduling performance threshold value that sets in advance, if be not less than, then described base station arranges transmitting power big step-length reduction sign and interference coordination sign to this dispatched users; If be lower than, then described second adjustment unit is to this dispatched users operation dispatching resource adjustment operation; And if scheduling resource is adjusted operation failure, then described second adjustment unit arranges the long reduction sign of transmitting power small step to this dispatched users, and this dispatched users is arranged the interference coordination sign; If common interference source, and described second adjustment unit does not arrange the interference coordination sign to this dispatched users, then described second adjustment unit is not less than at the scheduling performance of judging this dispatched users under the situation of the scheduling performance threshold value that sets in advance, and this dispatched users is arranged long sign and the interference coordination sign of reducing of transmitting power small step.

Further,

Described second adjustment unit is used for carrying out the interference coordination operation based on user's scheduling performance, also comprises:

Described second adjustment unit is indicated when the value of certain resource correspondence position is " weak jamming " at the OI that judges its neighbor cell base station transmission of receiving, judge whether it is provided with the interference coordination sign to the dispatched users on this resource, if do not arrange, then described second adjustment unit judges whether the transmitting power of this dispatched users can improve, if can improve, then described second adjustment unit judges whether this dispatched users is Cell Center User, if Cell Center User, then described second adjustment unit arranges the big step-length raising of transmitting power sign to this dispatched users; If not Cell Center User, then described second adjustment unit arranges the long sign that improves of transmitting power small step to this dispatched users.

Further, described system also comprises: the 3rd adjustment unit;

Described the 3rd adjustment unit is used for obtaining the interior scheduling performance of Serving cell and is lower than the scheduling performance threshold value that sets in advance and the dispatched users that the interference coordination sign is not set; Also be used for for each dispatched users that gets access to, judge whether the transmitting power of this dispatched users can improve, if can improve, be used for that then this dispatched users is arranged the big step-length of transmitting power and improve sign; If can not improve, then be used for this dispatched users operation dispatching resource adjustment operation.

Further,

Described first adjustment unit or second adjustment unit specifically comprise dispatched users operation dispatching resource adjustment operation:

Described first adjustment unit or second adjustment unit are judged when having idling-resource in the Serving cell, obtain the OI that neighbor cell base station sends in the idling-resource and be designated as the resource of " weak jamming " and the resource that dispatched users to be adjusted scheduling performance when these resource scheduling is greater than or equal to the scheduling performance threshold value that sets in advance, therefrom select the resource to dispatched users best performance to be adjusted, distribute to this dispatched users to be adjusted, discharge the original scheduling resource of this dispatched users to be adjusted simultaneously, and for this dispatched users to be adjusted the interference coordination sign is set;

There are not idling-resource in described first adjustment unit or second adjustment unit or do not have suitable idling-resource as judging in the Serving cell, then obtain neighbor cell base station sends in the scheduling resource of other users in the Serving cell OI indicated value is greater than or equal to the scheduling performance threshold value that sets in advance for the resource of " weak jamming " and dispatched users to be adjusted scheduling performance when these resources scheduling resource and corresponding dispatched users thereof, dispatched users on these resources scheduling performance when the dispatched users scheduling resource to be adjusted scheduling is greater than or equal to the dispatched users of the scheduling performance threshold value that sets in advance and corresponding scheduling resource thereof as alternative adjustment user and alternative adjustment resource, select in the alternative adjustment resource resource and corresponding alternative adjustment user thereof to dispatched users best performance to be adjusted, the scheduling resource of two dispatched users of exchange, and be that two dispatched users arrange the interference coordination sign respectively.

Further,

The transmitting power that described first adjustment unit or second adjustment unit are judged this dispatched users can improve, and specifically comprises:

The Modulation and Coding Scheme grade that the transmitting power that first adjustment unit or second adjustment unit are judged this dispatched users does not reach maximum transmission power or judges this dispatched users does not reach highest ranking.

Further, described system also comprises: the 4th adjustment unit and transmission unit;

Described the 4th adjustment unit is used for adjusting user emission power according to power adjustment sign, and described power adjustment sign comprises the big step-length reduction of transmitting power sign, long sign, transmitting power big step-length raising sign and the long sign that improves of transmitting power small step of reducing of transmitting power small step;

Described transmission unit is used for carrying out user's scheduling and transfer of data according to the interference coordination result, and described interference coordination result comprises user's scheduling resource and user emission power.

After adopting the present invention, coordinate the scheduling resource of neighbor cell user terminal, controlled the transmitting power of terminal, reduced presence of intercell interference intensity, improved systematic function.

Description of drawings

Fig. 1 (a) and Fig. 1 (b) are respectively the mutual schematic diagrames that HII indicates HII between form and neighbor cell in the prior art;

Fig. 2 (a) and Fig. 2 (b) are respectively the mutual schematic diagrames that OI indicates OI between form and neighbor cell in the prior art;

Fig. 3 is inter-cell uplink interference coordination approach flow chart in the embodiment of the invention;

Fig. 4 is that the present invention uses the HII indication interference coordination moment and OI indication interference coordination a kind of set-up mode schematic diagram constantly in the example one;

Fig. 5 is that the present invention uses the HII indication interference coordination moment and OI indication interference coordination another kind of set-up mode schematic diagram constantly in the example two.

Fig. 6 (a) is that the present invention uses that subdistrict position concerns schematic diagram in the example three, four;

Fig. 6 (b) is that the present invention uses the priority schematic diagram that distributes for local resource in the example three.

Embodiment

For making the purpose, technical solutions and advantages of the present invention clearer, hereinafter will be elaborated to embodiments of the invention by reference to the accompanying drawings.Need to prove that under the situation of not conflicting, the embodiment among the application and the feature among the embodiment be combination in any mutually.

In order to reduce inter-cell uplink interference, can adopt the Inter-Cell Interference Coordination technology, coordinate and control scheduling resource and the transmitting power of neighbor cell user terminal, reduce presence of intercell interference intensity, improve systematic function.

As shown in Figure 3, the inter-cell uplink interference coordination approach comprises:

When up high interference indication (HII) interference coordination arrives constantly, HII indication and/or OI indication that the base station sends according to the neighbor cell base station of having obtained, execution is adjusted scheduling resource and/or the transmitting power of user terminal based on the interference coordination operation of resource prioritization;

When uplink interference overload indication (OI) interference coordination arrived constantly, the interference coordination operation based on user's scheduling performance was carried out according to the OI indication that the neighbor cell base station of having obtained sends in the base station, adjusts scheduling resource and/or the transmitting power of user terminal.

Interference coordination result (comprising user's scheduling resource and user emission power) can be preserved after carrying out aforesaid operations in the base station, carries out user's scheduling and transfer of data according to the interference coordination result.

Wherein, in the cycle, comprise a described HII indication interference coordination at least constantly and a described OI indication interference coordination moment at each base station scheduling.The HII interference coordination is constantly or the OI interference coordination can be spacedly distributed constantly or unequal interval distributes, the OI interference coordination in the same base station scheduling cycle constantly adjacent HII interference coordination constantly between or overlap constantly with the HII interference coordination or be positioned at the HII interference coordination constantly after.

In addition, the resource prioritization difference of distributing for the same asset of neighbor cell; Wherein, the resource prioritization of the same asset of neighbor cell is configured by upper strata webmaster unification, perhaps is configured according to default rule by the identification information of each cell base station according to this residential quarter.

Above-mentioned execution specifically comprises based on the interference coordination operation of resource prioritization:

Above-mentioned execution specifically comprises based on the interference coordination operation of user's scheduling performance:

In addition, above-mentioned execution also comprises based on the interference coordination operation of user's scheduling performance:

Further, said method also comprises:

Correspondingly, described base station specifically comprises dispatched users operation dispatching resource adjustment operation:

The above-mentioned transmitting power of judging this dispatched users can improve, and specifically comprises:

In said method, described user's scheduling performance comprises one or more in the following parameter: the signal interference ratio of the Signal to Interference plus Noise Ratio of dispatched users, the signal to noise ratio of dispatched users, dispatched users and the Modulation and Coding Scheme grade of dispatched users; Described strong interferers and common interference source are that described base station is judged according to Serving cell and/or the neighbor cell Reference Signal Received Power of terminal survey report; Described Cell Center User is that described base station is judged according to Serving cell and/or the neighbor cell Reference Signal Received Power of terminal survey report.

In addition, said method also comprises:

Four advantageous applications examples below are provided, have been used for above-mentioned disturbance coordination method is carried out specific description.

Use example one

As shown in Figure 4, suppose that the base station scheduling cycle is 40 TTI (Transport Time Interval, Transmission Time Interval), the HII indication interference coordination cycle is 10 TTI, the OI indication interference coordination cycle is 1 TTI, and the current transmission time of supposing the system is K TTI, and the base station scheduling cycle arrives, dispatch the user base station, determines user's scheduling resource; First transmission time (i.e. K+1 TTI) after the scheduling is constantly indicated interference coordination cycle due in as HII, then in the current dispatching cycle, K+11 TTI, a K+21 TTI, a K+31 TTI are HII indication interference coordination cycle due in equally, and the base station is indicated the interference coordination operation of carrying out based on resource prioritization at HII indication interference coordination cycle due in according to the HII indication of having obtained and/or OI; Other transmission times within the current dispatching cycle are indicated interference coordination cycle due in as OI, namely K+2 TTI to a K+10 TTI, K+12 TTI to a K+20 TTI, K+22 TTI to a K+30 TTI, K+32 TTI to a K+39 TTI is OI indication interference coordination cycle due in, and the interference coordination operation of carrying out based on user's scheduling performance is indicated at OI indication interference coordination cycle due in the base station according to the OI that has obtained.When K+40 TTI, the base station scheduling cycle arrives again, and dispatch the user again the base station, determines user's scheduling resource.

Use in the example one, the base station has disposed HII indication interference coordination cycle and OI indication interference coordination cycle, when the interference coordination cycle arrives, corresponding interference coordination operation is carried out in the base station, adjust user's scheduling resource and/or user emission power, reduce presence of intercell interference, improve systematic function.

Use example two

As shown in Figure 5, suppose that the base station scheduling cycle is 40 TTI (Transport Time Interval, Transmission Time Interval), HII indication interference coordination is preceding M TTI in the current dispatching cycle constantly, OI indication interference coordination is all the other TTI in the current dispatching cycle constantly, and the current transmission time of supposing the system is K TTI, and the base station scheduling cycle arrives, dispatch the user base station, determines user's scheduling resource; As the HII indication interference coordination moment, the interference coordination operation of carrying out based on resource prioritization is indicated according to the HII indication of having obtained and/or OI constantly at HII indication interference coordination in the base station M the transmission time (i.e. K+1 TTI to the K+M TTI) after the scheduling constantly in the current dispatching cycle; All the other transmission times within the current dispatching cycle as OI indication interference coordination constantly, namely K+M+1 TTI to a K+39 TTI is the OI indication interference coordination moment, and the base station indicates interference coordination to operate based on the interference coordination of user's scheduling performance according to the OI indication execution of having obtained constantly at OI.During K+40 TTI, the base station scheduling cycle arrives again, and dispatch the user again the base station, determines user's scheduling resource.

Use in the example two, the base station has disposed HII indication interference coordination constantly and the OI indication interference coordination moment, when interference coordination arrives constantly, corresponding interference coordination operation is carried out in the base station, adjust user's scheduling resource and/or user emission power, reduce presence of intercell interference, improve systematic function.

Use example three

Shown in Fig. 6 (a), base station eNB 1-eNB7 is seven neighbor cell base station, and three residential quarters are arranged under each eNB, supposes that all there are 6 scheduling resource RB pieces each residential quarter: RB0, RB1, RB2, RB3, RB4, RB5; Be three cell configuration resource prioritizations, corresponding with RB.Shown in Fig. 6 (b), be example with three residential quarters under the eNB1: the resource prioritization that is 1 time each resource block assignments of Cell (residential quarter) is respectively: [3,3,2,2,1,1], for the resource prioritization of 2 times each resource block assignments of Cell is respectively: [1,1,3,3,2,2], for the resource prioritization of 3 times each resource block assignments of Cell is respectively: [2,2,1,1,3,3].

In this application example, be example with Cell 2, the neighbor cell of Cell 2 comprises Cell 1, Cell 3, Cell 4, Cell 9, Cell 7 and Cell 12, suppose that current transmission time is the HII indication interference coordination moment, Cell 2 operates based on the interference coordination of resource prioritization according to the HII indication of having obtained and/or OI indication execution, comprising:

Suppose that Cell 2 receives the HII indication that Cell 4 sends, and, Cell 2 has also sent the HII indication for Cell 4, further hypothesis Cell 2 receives that the value of resource RB0 correspondence position in the HII indication that Cell 4 sends is " 1 ", and the HII indication that Cell 2 sends to Cell 4 also is " 1 " in the value of resource RB0 correspondence position, Cell 2 judges that its priority on resource RB0 is lower than Cell 4 then, and then Cell2 is to its dispatched users operation dispatching resource adjustment operation on resource RB0.

The value of supposing resource RB2 correspondence position in the HII indication that Cell 2 receives that Cell 4 sends is " 1 ", and the HII indication that Cell 2 sends to Cell 4 also is " 1 " in the value of resource RB2 correspondence position, Cell 2 judges that its priority on resource RB2 is higher than Cell 4 then, then the dispatched users on 2 couples of resource RB2 of Cell arranges the interference coordination sign, and whether the transmitting power of judging this dispatched users can improve, if can improve, then 2 pairs of these dispatched users of Cell arrange the big step-length raising of transmitting power sign.

Optionally, after Cell 2 finished processing to HII indication, Cell 2 carried out following processing:

It is dispatched users on dispatched users, the dispatched users on the resource RB2 and the resource RB4 on the resource RB0 that Cell 2 obtains dispatched users that scheduling performance in the residential quarter is lower than the scheduling performance threshold value that sets in advance, the dispatched users that the interference coordination sign wherein is not set is the dispatched users on the resource RB4, then, Cell 2 judges whether the transmitting power of this dispatched users can improve, if can improve, then 2 pairs of these dispatched users of Cell arrange the big step-length raising of transmitting power sign; If can not improve, then 2 pairs of this dispatched users operation dispatching resource adjustment operations of Cell.

Wherein, the operation of the dispatched users operation dispatching resource adjustment on 2 couples of resource RB0 of Cell (or RB4) comprises:

Cell 2 judges whether there is idling-resource in the residential quarter, if there is idling-resource, then Cell 2 obtains the resource that OI that neighbor cell base station in the idling-resource sends is designated as " weak jamming ", and obtain the resource that dispatched users to be adjusted scheduling performance when the scheduling of these resources is greater than or equal to the scheduling performance threshold value that sets in advance, then, Cell 2 obtains wherein the resource to dispatched users best performance to be adjusted, distribute to dispatched users to be adjusted, discharge the original scheduling resource of dispatched users to be adjusted simultaneously, and for dispatched users to be adjusted the interference coordination sign is set; If there is no idling-resource or do not have suitable idling-resource (be above-mentioned processing failure), then Cell 2 obtains the resource that neighbor cell base station sends in the scheduling resource of other users in the Serving cell OI is designated as " weak jamming ", and obtain resource and the corresponding dispatched users thereof that dispatched users to be adjusted scheduling performance when the scheduling of these resources is greater than or equal to the scheduling performance threshold value that sets in advance, then, Cell 2 obtains dispatched users and the corresponding scheduling resource thereof that dispatched users scheduling performance when dispatched users scheduling resource to be adjusted scheduling on these resources is greater than or equal to the scheduling performance threshold value that sets in advance, as alternative adjustment user and alternative adjustment resource, then, Cell 2 obtains in the alternative adjustment resource the resource of dispatched users best performance to be adjusted and corresponding alternative adjustment user thereof, the scheduling resource of two dispatched users of exchange, and be that two dispatched users arrange the interference coordination sign.

Use in the example three, at HII indication interference coordination constantly, the interference coordination operation of carrying out based on resource prioritization is indicated according to the HII indication of having obtained and/or OI in the base station, adjusts user's scheduling resource or transmitting power, reduce presence of intercell interference, improve systematic function.

Use example four

Shown in Fig. 6 (a), base station eNB 1-eNB7 is seven neighbor cell base station, and three residential quarters are arranged under each eNB, supposes that all there are 6 scheduling resource RB pieces each residential quarter: RB0, RB1, RB2, RB3, RB4, RB5.

In this application example, be example with Cell 2, the neighbor cell of Cell 2 comprises Cell 1, Cell 3, Cell 4, Cell 9, Cell 7 and Cell 12, suppose that current transmission time is the OI indication interference coordination moment, Cell 2 carries out based on the interference coordination of user's scheduling performance according to the OI indication of having obtained and operates, and comprising:

Suppose that the OI indication that Cell 2 receives that Cell 4 sends is " strong jamming " in the value of resource RB1 correspondence position, then Cell 2 judges whether the dispatched users on the resource RB1 is strong interferers or the common interference source of Cell 4.If this dispatched users is the strong interferers of Cell 4, and Cell 2 does not arrange the interference coordination sign to this dispatched users, then Cell 2 judges whether the scheduling performance of this dispatched users is not less than the scheduling performance threshold value that sets in advance, if be not less than, then 2 pairs of these dispatched users of Cell arrange transmitting power big step-length reduction sign and interference coordination sign; If be lower than, then 2 pairs of this dispatched users operation dispatching resource adjustment operations of Cell, and if scheduling resource is adjusted operation failure, then 2 pairs of these dispatched users of Cell arrange the long reduction sign of transmitting power small step, and this dispatched users is arranged the interference coordination sign.If this dispatched users is the common interference source of Cell 4, and Cell 2 does not arrange the interference coordination sign to this dispatched users, then Cell 2 judges whether the scheduling performance of this dispatched users is not less than the scheduling performance threshold value that sets in advance, if be not less than, then 2 pairs of these dispatched users of Cell arrange long sign and the interference coordination sign of reducing of transmitting power small step.

Further, after Cell 2 finished the processing of " strong jamming " indication that exists in the OI indication of each neighbor cell transmission that it is received, " weak jamming " indication that exists during the OI that Cell 2 sends its each neighbor cell of receiving indicates was handled:

Suppose that the OI indication that Cell 2 receives that Cell 4 sends is " weak jamming " in the value of resource RB3 correspondence position, then Cell 2 judges whether it is provided with the interference coordination sign to the dispatched users on the resource RB3, if the interference coordination sign is not set, then Cell 2 judges whether the transmitting power of this dispatched users can improve, if can improve, then Cell 2 judges whether this dispatched users is Cell Center User, if Cell Center User, then 2 pairs of these dispatched users of Cell arrange the big step-length raising of transmitting power sign; If not Cell Center User, then 2 pairs of these dispatched users of Cell arrange the long sign that improves of transmitting power small step.

Further, after Cell 2 finished the processing of " weak jamming " indication that exists in the OI indication of each neighbor cell transmission that it is received, Cell 2 carried out following processing:

Cell 2 obtains the dispatched users that scheduling performance in the residential quarter is lower than the scheduling performance threshold value that sets in advance, be assumed to be dispatched users on the resource RB1 and the dispatched users on the resource RB5, the dispatched users that the interference coordination sign wherein is not set is the dispatched users on the resource RB5, then, Cell 2 judges whether the transmitting power of this dispatched users can improve, if can improve, then 2 pairs of these dispatched users of Cell arrange the big step-length raising of transmitting power sign; Otherwise, if can not improve, then 2 pairs of this dispatched users operation dispatching resource adjustment operations of Cell.

Wherein, the operation of the dispatched users operation dispatching resource adjustment on 2 couples of resource RB1 of Cell (or RB5) comprises:

Cell 2 judges whether there is idling-resource in the residential quarter, if there is idling-resource, then Cell 2 obtains the resource that OI that neighbor cell base station in the idling-resource sends is designated as " weak jamming ", and obtain the resource that dispatched users to be adjusted scheduling performance when the scheduling of these resources is greater than or equal to the scheduling performance threshold value that sets in advance, then, Cell 2 obtains wherein the resource to dispatched users best performance to be adjusted, distribute to dispatched users to be adjusted, discharge the original scheduling resource of dispatched users to be adjusted simultaneously, and for dispatched users to be adjusted the interference coordination sign is set; If there is no idling-resource or do not have suitable idling-resource, then Cell 2 obtains the resource that neighbor cell base station sends in the scheduling resource of other users in the Serving cell OI is designated as " weak jamming ", and obtain resource and the corresponding dispatched users thereof that dispatched users to be adjusted scheduling performance when the scheduling of these resources is greater than or equal to the scheduling performance threshold value that sets in advance, then, Cell 2 obtains dispatched users and the corresponding scheduling resource thereof that dispatched users scheduling performance when dispatched users scheduling resource to be adjusted scheduling on these resources is greater than or equal to the scheduling performance threshold value that sets in advance, as alternative adjustment user and alternative adjustment resource, then, Cell 2 obtains in the alternative adjustment resource the resource of dispatched users best performance to be adjusted and corresponding alternative adjustment user thereof, the scheduling resource of two dispatched users of exchange, and be that two dispatched users arrange the interference coordination sign.

Use in the example four, at OI indication interference coordination constantly, the interference coordination operation of carrying out based on user's scheduling performance is indicated according to the OI that has obtained in the base station, adjusts user's scheduling resource or transmitting power, reduces presence of intercell interference, improves systematic function.

By above-mentioned explanation and application example, a kind of inter-cell uplink interference coordination approach is provided, can reach the effect that reduces presence of intercell interference and improve systematic function.

In the present embodiment, a kind of inter-cell uplink interference coherent system is applied to comprise in the base station:

Preferably,

Preferably, described system also comprises: the 3rd adjustment unit;

Preferably,

Preferably, described system also comprises: the 4th adjustment unit and transmission unit;

One of ordinary skill in the art will appreciate that all or part of step in the said method can instruct related hardware to finish by program, described program can be stored in the computer-readable recording medium, as read-only memory, disk or CD etc.Alternatively, all or part of step of above-described embodiment also can use one or more integrated circuits to realize.Correspondingly, each the module/unit in above-described embodiment can adopt the form of hardware to realize, also can adopt the form of software function module to realize.The present invention is not restricted to the combination of the hardware and software of any particular form.

The above is the preferred embodiments of the present invention only, is not for limiting protection scope of the present invention.According to summary of the invention of the present invention; also other various embodiments can be arranged; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art are when making various corresponding changes and distortion according to the present invention; within the spirit and principles in the present invention all; any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims

1. inter-cell uplink interference coordination approach is applied to comprise in the base station:

2. the method for claim 1 is characterized in that:

3. method as claimed in claim 2 is characterized in that:

4. the method for claim 1 is characterized in that:

5. method as claimed in claim 4 is characterized in that:

6. the method for claim 1 is characterized in that:

7. method as claimed in claim 6 is characterized in that:

8. as any described method in the claim 5～7, it is characterized in that, also comprise:

9. as claim 5 or 6 described methods, it is characterized in that:

10. as claim 5 or 7 described methods, it is characterized in that:

11. as any described method in the claim 1,6 or 7, it is characterized in that:

12. method as claimed in claim 6 is characterized in that:

13. method as claimed in claim 7 is characterized in that:

14. as claim 1,5,6 or 7 described methods, it is characterized in that, also comprise:

15. an inter-cell uplink interference coherent system is applied to comprise in the base station:

16. system as claimed in claim 15 is characterized in that:

17. system as claimed in claim 16 is characterized in that:

18. system as claimed in claim 15 is characterized in that:

19. system as claimed in claim 15 is characterized in that:

20. system as claimed in claim 19 is characterized in that:

21. as any described system in the claim 18～20, it is characterized in that, also comprise: the 3rd adjustment unit;

22. as claim 18 or 19 described systems, it is characterized in that:

23. as claim 18 or 20 described systems, it is characterized in that:

24. as claim 15,18,19 or 20 described systems, it is characterized in that, also comprise: the 4th adjustment unit and transmission unit;