CN101227695A - Apparatus and method for distributing district communication resource - Google Patents

Apparatus and method for distributing district communication resource Download PDF

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Publication number
CN101227695A
CN101227695A CNA2007100729774A CN200710072977A CN101227695A CN 101227695 A CN101227695 A CN 101227695A CN A2007100729774 A CNA2007100729774 A CN A2007100729774A CN 200710072977 A CN200710072977 A CN 200710072977A CN 101227695 A CN101227695 A CN 101227695A
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ceu
ccu
scheduling unit
district
user
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果宁
刘利杰
范斌
钱雨
王文博
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Abstract

The invention provides a resource allocating method which is based on static-state SFR, a base station and a resource allocating device, which sets communication resources which are allocated to CEU and CCU according to the long-term fading and short-term fading channel features of users and the requirements of real-time data transmission amount of CEU and CCU. Compared with the prior art, the invention can improve SIR and throughput of high edge user, can guarantee diversity order of multi users, and saves signaling cost.

Description

A kind of method for distributing district communication resource and device
Technical field
The present invention relates to wireless communication technology, particularly a kind of method for distributing district communication resource and device.
Background technology
OFDM (OFDMA, Orthogonal Frequency Division MultipleAccess) is a kind of in the access mode, and the OFDM modulation can make system spectral resources be utilized effectively, may for realizing that high-speed data transmission provides.Each carrier wave is mutually orthogonal in the ofdm system, can eliminate the interference between each user in the sub-district.For improving the availability of frequency spectrum of Radio Resource, under the normal condition, the frequency duplex factor as one in the OFDMA system is 1, can use all frequency bands to transmit data to guarantee each sub-district.In this case, particularly for Cell Edge User, the interference of minizone becomes the principal element of the carrier/interface ratio (SIR, Signal Interference Ratio) that influences ofdm system.
Soft-frequency reuse (SFR, Soft Frequency Reuse) is a kind of technology that can improve the SIR of Cell Edge User.In the SFR technology, all resource carrier waves are divided into main carrier group (Major Sub-carrier Group) and from carrier wave set (Minor Sub-carrier Group) in the sub-district, all community users are divided into central user (CCU, Cell Center User) and edge customer (CEU, Cell Edge User).The main carrier group resource of adjacent sub-district is mutually orthogonal in the system.When resource allocation, give CCU with the main carrier set of dispense, will distribute to CEU from carrier wave set, from the base station transmitting power of carrier wave set base station transmitting power, can improve the SIR of edge customer in a large number less than the main carrier group.
Though SFR can improve the SIR of edge customer, there are some technical problems: the first, reduced the multi-user diversity degree of CEU, for example, among the static SFR, when system initialization, carried out the main carrier group of each sub-district and from the resource division of carrier wave set.When each resource allocation, the ratio according to the Resources allocation of the business datum demand definition that inserts the user during according to system initialization is carried out resource allocation.Because the resource of main carrier group is generally less, so scheduling of resource is compared the multi-user diversity degree that has reduced CEU when not using SFR.Second, in static SFR, when system initialization, carry out main carrier group in the sub-district and from the division of carrier wave set, can't carry out the division of resource according to business demand, the throughput demand of different user, so can have a part of user resources distribution surplus in the sub-district, and another part user resources are distributed not enough situation.
Have in addition in the prior art and a kind ofly distribute in conjunction with interference coordination and equitable proportion that (PF, resource allocation techniques ProportionalFair) are used to improve the throughput of Cell Edge User.In this technology, common coordinated allocation resource between a plurality of adjacent sub-districts.For a definite Resource Block, utilize PF scheduling the carrying out distribution of resource between the adjacent sub-district, for multiple different frequency reuse mode (frequency reuse) and different resource distribution modes, the final resource distribution mode of a kind of conduct of selection percentage fairness index maximum.
About the calculating of the equitable proportion factor, in single-carrier system, generally use:
P i j ( n ) = S i j ( n ) T i ( n ) Formula (1)
Wherein, P i j(n) be illustrated in n the scheduling equitable proportion factor of user i on basic scheduling unit j constantly; S i j(n) be illustrated in n the scheduling transmission bit number of the maximum of user i on basic scheduling unit j constantly; T i(n) be illustrated in n the scheduling average transmission bit number of user i constantly; T i(n) after each all basic scheduling units all distribute, upgrade, its more new formula be:
T i ( n + 1 ) = ( 1 - 1 τ ) T i ( n ) + 1 τ S i , all ( n ) Formula (2)
In the formula (2), S i , all ( n ) = Σ j = 1 N B i j ( n ) S i j ( n ) , Be n the scheduling moment, the transmission bit number of user i on all basic scheduling units that distribute;
B i j ( n ) = 1 N j allocated to C i 0 others ,
In the formula (2), τ is the size of the average window of PF scheduling.
In multicarrier system, the equitable proportion factor P in the resource allocation of multi-carrier communications systems is defined as:
P = arg ma x S Π i ∈ U S ( 1 + Σ k ∈ C i r i , k ( T - 1 ) R i ′ ) Formula (3)
Wherein, U sBe the user's set in the resource allocation, C iBe the subcarrier set that user i can use, r I, kBe the transmission rate of user i on subcarrier k, T is the time average window size, R ' iIt is the average transmission rate of preceding T framed user i.Wherein, the average transmission rate R ' of user i iMore new formula be
R i = ( 1 - 1 T ) R i ′ + 1 T Σ k ∈ C i r i , k Formula (4)
For two kinds of top PF resource allocation methods, the PF resource allocation methods of single carrier also can use under the situation of multicarrier, promptly distribute all carrier resources successively, assign the back and upgraded each user's average transmission bit number, basic identical with the system PF scheduling performance of multicarrier like this.
From the computing formula of aforementioned proportion fairness index as can be seen when the resource allocation system for the consideration of each user's rapid fading and slow fading: the first, to guarantee the justice between each user in the equitable proportion factor divided by each user's average transmission bit number; Second, transmission rate ri has characterized the performance of each user's link, for example, Adaptive Modulation and Coding (AMC, Adaptive Modulation and Coding) in the system, the maximum of user's reprocessing SNR being hinted obliquely at for system transmits bit number exactly, and user's reprocessing SNR calculates by user's rapid fading and slow fading.In addition, in some PF dispatching algorithm, directly utilize user's reprocessing SNR to substitute ri.
This resource allocation techniques that distributes in conjunction with interference coordination and equitable proportion is in the throughput that improves Cell Edge User, technical problem is on the other hand but arranged: this method is based upon on the basis of dynamic interference coordination, the resource allocation of sub-district each time all needs to communicate with adjacent sub-district, determine corresponding resource distribution mode, thereby increased the signaling consumption of communicating by letter between the base station; This scheme utilizes exhaustive mode to select optimum Resource Allocation Formula, computation complexity height.
In sum, lack a kind of communication resource distribution technology in the prior art, can both improve the SIR and the throughput of edge customer, guarantee multi-user's order of diversity again and save signaling consumption.
Summary of the invention
In view of this, technical problem to be solved by this invention provides the method that a kind of district communication resource distributes, and this method can improve the SIR and the throughput of Cell Edge User, guarantees multi-user's order of diversity, and saves signaling consumption.
Another object of the present invention provides a kind of device that is used for the resource scheduling device of cell communication, and this device can improve the SIR and the throughput of edge customer, guarantees multi-user's order of diversity, and saves signaling consumption.
Another object of the present invention provides a kind of base station, divides timing carrying out local resource, and the SIR and the throughput of edge customer can be improved in this base station, guarantees multi-user's order of diversity, and saves signaling consumption.
In the specific embodiment of the invention, based on the soft-frequency reuse technology, promptly all carrier resources are divided into the main carrier group and from carrier wave set, all community users are divided into CEU and CCU.When carrying out resource allocation, the specific embodiment of the invention is different with existing SFR, takes all factors into consideration user's slow fading and fast fading channel characteristic, and CEU is not limited to only distribute main carrier group resource, and CCU is not limited to only distribute from the carrier wave set resource.In each resource allocation constantly, demand according to the volume of transmitted data of CEU and CCU is set the number of resources of distributing to CEU and CCU, promptly at first seek CEU and can reach the highest carrier resource of volume of transmitted data, it is distributed to CEU transmission data, remaining carrier resource is distributed to CCU.
In the specific embodiment of the invention, also provide a kind of resource scheduling device that is used for cell communication, this resource scheduling device specifically comprises the distribution initialization unit, equitable proportion factor calculating unit, user selection unit, resource allocation unit;
This distribution initialization unit is used for distributing the basic scheduling unit number of sub-district CEU and CCU, and the foundation of distribution is user's an average data transmission quantity, and allocation result is sent to described user selection unit.
This equitable proportion factor calculating unit, be used to receive user's rapid fading and slow fading information, calculate the equitable proportion factor of CEU on all basic scheduling units in sub-district, and, calculate CCU and assigned the back for the equitable proportion factor on all remaining basic scheduling units at CEU.
This user selection unit is used to select the pairing CEU user of element of aforementioned proportion fairness index maximum; And, the pairing CCU user of element of selection aforementioned proportion fairness index maximum.
This resource allocation unit is used for the CEU user that the resource allocation of all basic scheduling units that CEU is distributed selects for described user selection unit; The CCU user that the resource allocation of all basic scheduling units that described CCU is distributed selects for described user selection unit, and export above-mentioned resource allocation information.
In the specific embodiment of the invention, also provide a kind of base station, comprise the above-mentioned resource scheduling device that is used for cell communication.
Compared with prior art, soft-frequency reuse resource allocation methods provided by the invention, owing to consider user's slow fading and fast fading channel characteristic, demand according to the real-time throughput of CEU and CCU is set the number of resources of distributing to CEU and CCU, than only comparing according to the initial prior art that inserts user's business datum demand definition Resources allocation ratio, can improve the SIR of edge customer, guarantee multi-user's order of diversity again, and improve the throughput of Cell Edge User; Because embodiment of the present invention does not need to communicate with adjacent sub-district, thereby outside satisfying foregoing beneficial effect, do not waste signaling consumption yet.
Description of drawings
Fig. 1 is the simplified flow chart of the execution mode of method for distributing district communication resource of the present invention;
Fig. 2 is the idiographic flow schematic diagram of step 3 among Fig. 1;
Fig. 3 is the simplified structure diagram of the base station of the specific embodiment of the present invention;
Fig. 4 is the simplified structure diagram of the resource allocation device of the specific embodiment of the present invention;
Fig. 5 is not use SFR at 0.4 o'clock from, main carrier group transmitting power ratio, uses SFR and uses the throughput comparison diagram of the system of three kinds of schemes of the specific embodiment of the invention;
Fig. 6 from, main carrier group transmitting power than being not use SFR at 0.6 o'clock, use SFR and use the throughput comparison diagram of the system of three kinds of schemes of the specific embodiment of the invention;
Fig. 7 from, main carrier group transmitting power than being not use SFR at 0.4 o'clock, use SFR and use three kinds of scheme users' of the specific embodiment of the invention throughput comparison diagram;
Fig. 8 from, main carrier group transmitting power than being not use SFR at 0.6 o'clock, use SFR and use three kinds of scheme users' of the specific embodiment of the invention throughput comparison diagram.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing, the present invention is further detailed explanation to lift embodiment.
In the specific embodiment of the invention, based on the SFR technology, when carrying out resource allocation, the specific embodiment of the invention is different with existing SFR technology, take all factors into consideration user's slow fading and fast fading channel characteristic, CEU is not limited to only distribute main carrier group resource, and CCU is not limited to only distribute from the carrier wave set resource.In each resource allocation constantly, demand according to the volume of transmitted data of CEU and CCU is set the resource of distributing to CEU and CCU, promptly at first seek the carrier resource of the volume of transmitted data demand that satisfies CEU, it is distributed to CEU, remaining carrier resource is distributed to CCU.
With reference to figure 1, below this method is carried out further concrete description.
Step S01: the SIR according to user in the sub-district is divided into CEU and CCU two classes with the user, frequency band is set the main carrier group respectively for adjacent sub-district and from carrier wave set, from the base station transmitting power of the carrier wave set base station transmitting power less than the main carrier group.According to the thought of SFR, guarantee that when carrying out resource allocation the main carrier group between the neighbor cell is mutually orthogonal, to reduce the interference between the sub-district.
Step S02: according to the business datum demand of sub-district CEU and CCU, the basic scheduling unit number that CEU and CCU distribute when determining preliminary resource allocation.
Generally, the least resource unit that scheduling distributes in system is one group of carrier wave, is called basic scheduling unit here.Carry out the preliminary distribution of CCU and CEU carrier number according to the demand data amount,, adjust for the carrier number that distributes again when dispatching in the later stage according to different user data transmittability difference.Business datum amount or volume of transmitted data are meant message transmission rate and the product of service needed time that miscellaneous service needs, and unit is bit bit.
At first, set N and represent the basic scheduling unit number that the sub-district is total, N1 represents to distribute to the basic scheduling unit number of CEU, and N2 represents to distribute to the basic scheduling unit number of CCU, and Taim represents to insert the ratio of the business datum demand of CEU and CCU among the user.
When initialization, according to Taim and N, N1 when initially being inserted and N2, N1 and N2 will satisfy: N1/N2 approximates Taim, and N1+N2=N.At this moment, N1, N2 are preliminary number of resources of distributing, and only distribute according to user's business datum demand, do not consider the different of user's slow fading and rapid fading.Because when carrying out actual transfer of data, user's data quantity transmitted so will adjust the number of N1 and N2 in real time, guarantees the fairness of the transfer of data of different user in real-time variation.
Step S03: constantly n scheduling, choose N1 basic scheduling unit, CEU has the maximum equitable proportion factor on above-mentioned N1 basic scheduling unit, above-mentioned N1 basic scheduling unit distributed to the CEU of equitable proportion factor maximum on this basic scheduling unit.
For this sub-district, C1 represents the quantity of CEU in this sub-district, and C2 represents the quantity of CCU in this sub-district, when carrying out resource allocation, at first for all CEU carry out resource allocation, then residual resource is distributed to CCU.With reference to figure 2, completing steps 03 according to the following steps:
Step S0301: obtain the equitable proportion factor of each CEU on N scheduling unit of this sub-district;
For example, in the single-carrier system, can calculate, obtain the equitable proportion factor P of CEU with reference to formula (1) and formula (2) i j(n) sequence.In the multicarrier system, except that utilizing formula (1) and formula (2), can also obtain the equitable proportion factor sequence with reference to formula (3) and formula (4).
Step S0302: the equitable proportion factor matrix W that obtains the C1 * N of the equitable proportion factor formation of all CEU on N scheduling unit; That is, n scheduling constantly, (i j) satisfies the capable j column element of the i W of matrix W W ( i , j ) = P i j ( n ) .
S0303 chooses the element w of an equitable proportion factor maximum respectively from each row of this equitable proportion factor matrix W j(j=1,2 ..., N), constitute the matrix R of 1 * N.
S0304: from this matrix R, choose N1 maximum element, according to this equitable proportion factor matrix W, the described element of choosing N1 corresponding basic scheduling unit in this equitable proportion factor matrix W distributed to the CEU of the described element of choosing correspondence in described equitable proportion factor matrix W respectively.
By above-mentioned S0302 and S0303 as can be known, CEU has the maximum equitable proportion factor on these N1 that choose basic scheduling units; And the basic scheduling unit of each that choose has been distributed to the CEU of equitable proportion factor maximum on each basic scheduling unit.
Step S04 distributes to the basic scheduling unit of remaining N2 respectively the CCU of equitable proportion factor maximum on this basic scheduling unit respectively.
Concrete, for N2 carrier resource, to obtain the equitable proportion factor on remaining N2 basic scheduling unit of CCU, this N2 basic scheduling unit distributed to the CCU of each equitable proportion factor maximum on this N2 basic scheduling unit respectively with the same method of step S0301.
By step S03 and S04, n scheduling constantly, at first be the basic scheduling unit of CEU selection percentage fairness index maximum, and the basic scheduling unit that will select is distributed to the CEU of equitable proportion factor maximum on this scheduling unit respectively; Remaining basic scheduling unit is distributed to the CCU of equitable proportion factor maximum on this basic scheduling unit respectively.
Step S05 determines the basic scheduling unit number that next scheduling moment CEU and CCU distribute according to the ratio Tnow and the Taim of CEU, CCU average data transmission quantity, and concrete grammar is:
Step S0501 upgrades all users' average data transmission quantity, and calculates Tnow.
This step both can be placed on resource allocation unit and carry out, and also can be placed on to distribute initialization unit to carry out.
If step S0502 Tnow＜Taim, then CEU increases the basic scheduling unit of a distribution, i.e. N1now=N1+1, and CCU reduces the basic scheduling unit of a distribution, i.e. N2now=N2-1 simultaneously;
If step S0503 Tnow＞Taim, then CEU reduces the basic scheduling unit of a distribution, i.e. N1now=N1-1, and CCU increases the basic scheduling unit of a distribution, i.e. N2now=N2+1 simultaneously;
If step S0504 is Tnow=Taim, then N1, N2 are constant.
Dispatch constantly at next, dispatch the basic scheduling unit number of moment CEU and CCU distribution according to definite next of step S05, execution in step S03 and S04 carry out this scheduling concrete resource allocation constantly again.
The specific embodiment of the present invention also provides base station of adopting above-mentioned resource allocation methods and the scheduling of resource module that the base station comprises, with reference to figure 3, embodiment of the present invention provides a kind of radio communication base station, for user side provides communication service, this base station comprises resource scheduling device, this resource scheduling device receives the slow fading and the rapid fading information of user side, dynamically set the number of resources of distributing to CEU and CCU, the foundation of setting is the demand of user's data transmission quantity and the volume of transmitted data that the user has reached.
With reference to figure 4, this resource scheduling device specifically comprises the distribution initialization unit, equitable proportion factor calculating unit, user selection unit, resource allocation unit.
This distribution initialization unit is used for distributing the basic scheduling unit number of sub-district CEU and CCU, and the foundation of distribution is user's an average data transmission quantity, and allocation result is sent to described user selection unit.This distribution initialization unit specifically comprises following several module:
Divide module, be used for the user being divided into CEU and CCU two classes according to sub-district user's SIR, the communication carrier that the sub-district is all is divided into the main carrier group and from carrier wave set, from the base station transmitting power of carrier wave set base station transmitting power less than the main carrier group, mutually orthogonal in the main carrier group of carrying out between the resource allocation neighbor cell, guarantee that when carrying out resource allocation the main carrier group between the neighbor cell is mutually orthogonal;
The initial resource allocation module, the basic scheduling unit number of CEU and CCU when being used for determining resource allocation for the first time, definite foundation is to insert the total basic scheduling unit number of ratio and sub-district of the business datum amount of the CEU of sub-district and CCU;
Dynamically setting module is used for after resource allocation finishes at every turn, determines the basic scheduling unit number that next scheduling moment CEU and CCU distribute according to Tnow and Taim relation.
The flow process that this distribution initialization unit is carried out is identical with step S01, S02 and the S04 in the said method execution mode.Wherein, step S01, S02 are the original allocation of carrying out before the sub-district communicates for the first time, obtain the basic scheduling unit number of CEU and CCU in the sub-district, step S05 is the resource allocation when dispatching next time of carrying out after each resource allocation in the real time communication, obtains next and distributes CEU constantly and the basic scheduling unit number of CCU.
This equitable proportion factor calculating unit, be used to receive user's rapid fading and slow fading information, calculate the equitable proportion factor of CEU on all basic scheduling units in sub-district, and, calculate CCU equitable proportion factor on the remaining basic scheduling unit after CEU has assigned, and the value of the described equitable proportion factor that obtains is sent to described distribution selected cell.
This distributes selected cell, is used to select to distribute to the basic scheduling unit of described CEU and the CEU that acceptance distributes, the equitable proportion factor maximum of the CEU correspondence that the basic scheduling unit of distributing to described CEU of described selection and the acceptance of described selection distribute; And, the CCU that selects acceptance to distribute, the equitable proportion factor maximum of the CCU correspondence that the acceptance of described selection distributes; Described distribution selection result is sent to described equitable proportion factor calculating unit and described resource allocation unit;
This resource allocation unit, be used to export resource allocation information, described resource allocation information comprises distributes to the CEU that the acceptance of described selection distributes with the basic scheduling unit of distributing to described CEU of described selection, the CCU that the acceptance of distributing to described selection of described remaining basic scheduling unit is distributed.
Compared with prior art, the SFR resource allocation methods that the specific embodiment of the present invention provides and base station and resource allocation device, owing to further consider user's slow fading and fast fading channel characteristic, demand according to the real-time Data Transmission amount of CEU and CCU is set the number of resources of distributing to CEU and CCU, with only compare according to the initial prior art that inserts user's business datum demand definition Resources allocation ratio, can improve the SIR and the throughput of edge customer, guarantee multi-user's order of diversity again; Because embodiment of the present invention does not need to communicate with adjacent sub-district, thereby the saving signaling expense.
Introduce the beneficial effect of the specific embodiment of the present invention in detail below with reference to accompanying drawing.As accompanying drawing 5 and Fig. 7 is to be 3Km/h in movement velocity, the base station end is 0.4 o'clock for the ratio from the transmitting power of carrier wave set and main carrier group, do not use SFR, use the performance curve of SFR and use three kinds of interference coordinations of the specific embodiment of the present invention (IC, Interference Coordination) scheme.Use the specific embodiment of the invention with respect to traditional SFR scheme as seen from Figure 5, cell throughout increases by 1.83%.As seen from Figure 7, use the specific embodiment of the invention, the throughput of CCU and traditional SFR scheme are basic identical, and the CEU throughput increases by 14.88%.
Fig. 6 and Fig. 8 are to be 3Km/h in movement velocity, and the base station end is 0.6 o'clock for the ratio from the transmitting power of carrier wave set and main carrier group, does not use SFR, use SFR and use the comparison of three kinds of schemes of performance curve of three kinds of schemes of the specific embodiment of the invention.Use the specific embodiment of the invention with respect to traditional SFR scheme as can see from Figure 6, cell throughout increases by 3.93%.As seen from Figure 8, be compared to traditional SFR scheme, use the specific embodiment of the invention, the throughput of CCU increases by 1.15%, and the throughput of CEU increases by 22.6%.
More than to the specific embodiment of the invention provided a kind of method and its equipment that local resource is distributed done detailed introduction, used embodiment herein principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.

Claims (9)

1. method for distributing district communication resource, user in the sub-district is divided into Cell Edge User CEU and Cell Center User CCU, communication carrier in the sub-district is divided into the main carrier group and from carrier wave set, from the base station transmitting power of carrier wave set base station transmitting power less than the main carrier group, when carrying out resource allocation, the main carrier group between the neighbor cell is mutually orthogonal; It is characterized in that this resource allocation methods also comprises:
Determine the basic scheduling unit quantity N2 that basic scheduling unit quantity N1 that CEU should be assigned with and CCU should be assigned with;
In each resource allocation constantly, at first for CEU chooses N1 basic scheduling unit, on above-mentioned N1 basic scheduling unit, CEU has the maximum equitable proportion factor, above-mentioned N1 basic scheduling unit distributed to CEU respectively, and this CEU is equitable proportion factor maximum on described N1 basic scheduling unit;
Remaining N2 basic scheduling unit distributed to CCU respectively, and this CCU is equitable proportion factor maximum on described N2 basic scheduling unit.
2. the method that district communication resource according to claim 1 distributes, it is characterized in that, for the first time before the resource allocation, determine to distribute to the basic scheduling unit number of CEU and CCU according to the total basic scheduling unit number of ratio and sub-district of the business datum amount of CEU that inserts the sub-district and CCU;
Before all the other resource allocations, determine next scheduling basic scheduling unit number of distributing of CEU and CCU constantly according to the ratio relation of the ratio of the average data transmission quantity of all CEU and CCU and business datum demand.
3. the method that district communication resource according to claim 2 distributes is characterized in that:
Represent the basic scheduling unit sum of described district communication resource with N, C1 represents the number of CEU in the described sub-district, and C2 represents the number of CCU in the described sub-district; The method of choosing basic scheduling unit for CEU comprises:
Obtain the equitable proportion factor of each CEU on N scheduling unit of described sub-district;
According to the equitable proportion factor of described each CEU on N scheduling unit of described sub-district, obtain the matrix W of all CEU for the C1 * N of N scheduling unit;
From each row of described matrix W, choose the maximum element of a value respectively, constitute the matrix R of 1 * N;
Choose N1 maximum element from described matrix R, according to described matrix W, the described element of choosing N1 corresponding basic scheduling unit in described matrix W distributed to CEU respectively, described CEU is the CEU of the described element of choosing correspondence in described matrix W.
4. the method that district communication resource according to claim 1 distributes is characterized in that,
C1 represents the quantity of CEU in the described sub-district, and C2 represents the quantity of CCU in the described sub-district, P i j(n) be illustrated in n the scheduling equitable proportion factor of user i on basic scheduling unit j constantly; S i j(n) be illustrated in n the scheduling transmission bit number of the maximum of user i on basic scheduling unit j constantly; T i(n) be illustrated in n the scheduling average transmission bit number of user i constantly; N scheduling constantly, for j basic scheduling unit, described P i j(n) computing formula is as follows:
P i j ( n ) = S i j ( n ) T i ( n ) Wherein, described T i(n) after all distributing, upgrade all each time basic scheduling units described T i(n) more new formula is:
T i ( n + 1 ) = ( 1 - 1 τ ) T i ( n ) + 1 τ S i , all ( n ) Wherein, S i , all ( n ) = Σ j = 1 N B i j ( n ) S i j ( n ) , Be n the scheduling moment, the transmission bit number of user i on all basic scheduling units that distribute, B i j ( n ) = 1 N j allocated to C i 0 others , τ is the size of the average window of PF scheduling; Perhaps,
U SUser's set in the expression resource allocation, C iThe subcarrier set that expression user i can use, r I, kThe transmission rate of expression user i on subcarrier k, T express time average window, R ' iThe average transmission rate of T framed user i before the expression, then the computing formula of the equitable proportion factor is:
P = arg max S Π i ∈ U S ( 1 + Σ k ∈ C i r i , k ( T - 1 ) R i ′ ) .
Wherein, the average transmission rate R ' of user i iMore new formula be:
R i = ( 1 - 1 T ) R i ′ + 1 T Σ k ∈ C i r i , k .
5. the method that district communication resource according to claim 2 distributes is characterized in that, step of the basic scheduling unit number that described definite next scheduling moment CEU and CCU distribute comprises:
Upgrade all users' average throughput, and calculate the ratio of described average data transmission quantity;
If the ratio of average data transmission quantity is less than the ratio of business datum demand, then CEU increases the basic scheduling unit number that should distribute, and CCU reduces by the basic scheduling unit number that should distribute;
If the ratio of average data transmission quantity is greater than the ratio of business datum demand, then CEU reduces by the basic scheduling unit number that should distribute, and CCU increases the basic scheduling unit number that should distribute.
6. a resource scheduling device that is used for cell communication is characterized in that, described resource scheduling device comprises: distribute initialization unit, the equitable proportion factor calculating unit is distributed selected cell, resource allocation unit;
Described distribution initialization unit, be used for the user is divided into Cell Edge User CEU and Cell Center User CCU, the communication carrier that the sub-district is all is divided into the main carrier group and from carrier wave set, from the base station transmitting power of carrier wave set base station transmitting power less than the main carrier group, mutually orthogonal in the main carrier group of carrying out between the resource allocation neighbor cell, and the basic scheduling unit number of CEU and CCU in the distribution sub-district, and allocation result sent to described user selection unit;
Described equitable proportion factor calculating unit, be used to receive user's rapid fading and slow fading information, calculate the equitable proportion factor of CEU on all basic scheduling units in sub-district, calculate CCU equitable proportion factor on the remaining basic scheduling unit after CEU has assigned, and the value of the described equitable proportion factor is sent to described distribution selected cell;
Described distribution selected cell is used to select to distribute to the basic scheduling unit of described CEU and the CEU that acceptance distributes, the equitable proportion factor maximum of the CEU correspondence that the basic scheduling unit of distributing to described CEU of described selection and the acceptance of described selection distribute; Select to accept the CCU of distribution, the equitable proportion factor maximum of the CCU correspondence that the acceptance of described selection distributes; Described distribution selection result is sent to described equitable proportion factor calculating unit and described resource allocation unit;
Described resource allocation unit is used to export resource allocation information, and described resource allocation information comprises distributes to described CEU with the basic scheduling unit of described selection, with the described CCU of distributing to of described remaining basic scheduling unit.
7. the resource scheduling device that is used for cell communication according to claim 6 is characterized in that, described distribution initialization unit specifically comprises:
Divide module, be used for the user being divided into CEU and CCU two classes according to sub-district user's SIR, the communication carrier that the sub-district is all is divided into the main carrier group and from carrier wave set, from the base station transmitting power of carrier wave set base station transmitting power, guarantee that when carrying out resource allocation the main carrier group between the neighbor cell is mutually orthogonal less than the main carrier group;
The initial resource allocation module, the basic scheduling unit number of CEU and CCU when being used for determining resource allocation for the first time, definite foundation is to insert the total basic scheduling unit number of ratio and sub-district of the business datum amount of the CEU of sub-district and CCU;
Dynamically setting module is used for determining the basic scheduling unit number that next scheduling moment CEU and CCU distribute according to the ratio of CEU and CCU average data transmission quantity and the ratio relation of business datum demand.
8. a base station that is used for cell communication comprises resource scheduling device as claimed in claim 6.
9. a base station that is used for cell communication comprises resource scheduling device as claimed in claim 7.
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WO2010142255A1 (en) * 2009-06-12 2010-12-16 Huawei Technologies Co., Ltd. Method for uplink inter cell interference coordination in a wireless access system
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CN102239717A (en) * 2008-10-28 2011-11-09 新加坡科技研究局 A method of optimising bandwidth allocation in a wireless communication network
US8331951B2 (en) 2009-06-12 2012-12-11 Futurewei Technologies, Inc. System and method for uplink inter cell interference coordination in a wireless access system
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CN108541067A (en) * 2017-03-06 2018-09-14 大唐移动通信设备有限公司 A kind of resource regulating method and device

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