CN102215492B - User-feedback-based multi-cell resource allocation method - Google Patents

User-feedback-based multi-cell resource allocation method Download PDF

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CN102215492B
CN102215492B CN 201110155010 CN201110155010A CN102215492B CN 102215492 B CN102215492 B CN 102215492B CN 201110155010 CN201110155010 CN 201110155010 CN 201110155010 A CN201110155010 A CN 201110155010A CN 102215492 B CN102215492 B CN 102215492B
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China
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resource block
residential quarter
power
data
mode information
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CN 201110155010
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Chinese (zh)
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CN102215492A (en
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李晓辉
张鹏
王昕�
吴极
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西安电子科技大学
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Abstract

The invention discloses a user-feedback-based multi-cell resource allocation method, aiming to overcome the deficiency of lower average frequency spectrum among cells by the existing ICIC (Inter-cell Interference Coordination) technology. The method is realized by the following steps that: a network terminal defines a cooperation set, edge users and center users; the edge users feed back signal-to-interference and noise ratios (SINRs) and cooperation mode information to the cells at which the edge users locate, and the center users feed back SINRs to the cells at which the center users locate; the cells independently allocate resource blocks according to the SINRs fed back by the edge users and the center users and initially allocate the total power of a base station, and cells in the cooperation set share resource block sequence numbers occupied by respective edge user and cooperation mode information to complete the sharing; and the cells adjust the power sent by each resource blockand calculate the final SINR of each resource block. The method provided by the invention can ensure the frequency spectrum of the edge users and simultaneously improve the average frequency spectrumamong cells. The method can be applied to wireless resource management of multi-cell OFDMA (orthogonal frequency division multiplex access) systems in the wireless communication field.

Description

Many local resources distribution method based on user feedback

Technical field

The invention belongs to the mobile communication technology field, relate to resource allocation methods, specifically is a kind of many local resources distribution method based on user feedback, can be used in the multi-cell OFDMA system management to Radio Resource.

Background technology

Continuous development along with mobile communication business, the user is more and more higher to the requirement of the speed of data and time delay, back 3 third-generation mobile communication technology are by adopting bigger bandwidth, higher spectrum efficiency make can provide peak rate much larger than present 3G cell mobile communication systems.The OFDMA technology makes the base station give to be in the different user of same residential quarter to distribute mutually orthogonal subcarrier, make and do not have the phase mutual interference between the user in the same residential quarter, but because OFDMA The Application of Technology, identical frequency resource is used in adjacent residential quarter, the interference of minizone can not be ignored, and the easier interference that is subjected to neighbor cell of the user who is positioned at cell edge, cause its spectrum efficiency far below the spectrum efficiency of Cell Center User, this has become the bottleneck of restriction mobile communication system overall performance.

Therefore, 3GPP (The 3rd Generation Partnership Project) standards meetings will improve the performance of Cell Edge User as one of its leading indicator always, ICIC (Inter-cell Interference Coordination) is considered to a kind of a kind of good technology of handling presence of intercell interference in 3GPP LTE (Long Term Evolution, Long Term Evolution).In various ICIC strategies, FFR (Fraction Frequence Reuse) and SFR (Soft Frequence Reuse) are widely used, its main thought is, network terminal is divided into center and peripheral two parts to the whole frequency resource in residential quarter, central user and edge customer use centre frequency resource and marginal frequency resource respectively, this strategy is that to sacrifice the residential quarter average spectral efficiency (ase) be cost, improves the spectrum efficiency of Cell Edge User.

Summary of the invention

The object of the invention is to solve the lower deficiency of above-mentioned existing ICIC technique district average spectral efficiency (ase), has proposed a kind of many local resources distribution method based on user feedback, with the interference of effective control minizone, and has guaranteed the average spectral efficiency (ase) of residential quarter.

Technical thought of the present invention is: Cell Edge User feeds back the collaboration mode information of each Resource Block, shared collaboration pattern information between cooperation cell, and each residential quarter Resources allocation and adjust power independently.Its specific implementation step comprises as follows:

(1) set up the cooperation collection statically by network terminal, each cooperation collection is made up of three adjacent residential quarters, and there are two adjacent residential quarters each residential quarter, is defined as an adjacent residential quarter and No. two adjacent residential quarters respectively;

(2) base station of residential quarter, user place is designated as G to this user's large scale decline yield value, the base station of cooperation being concentrated two adjacent residential quarters is designated as G respectively to this user's the large scale yield value that declines 1And G 2, the bigger G ' that is designated as wherein, if satisfy: G-G '<A, then the user is defined as edge customer, otherwise is defined as central user, and A is predefined thresholding, A=3dB;

(3) edge customer feeds back the Signal to Interference plus Noise Ratio SINR on each Resource Block iWith collaboration mode information, collaboration mode information is represented with 2 bits; Central user is fed back the Signal to Interference plus Noise Ratio SINR ' on each Resource Block i, wherein, and i ∈ (1,2 ..., M), M represents the number of local resource piece;

(4) residential quarter is according to the SINR that receives iAnd SINR ' iI ∈ (1,2, ..., M), proportionally fair algorithm is edge customer and central user distributes resource blocks, and a Resource Block only allows by a CU, M the Resource Block of total transmitted power P mean allocation of cell data signal to this residential quarter, i.e. the primary data signal transmitting power p of each Resource Block Int=P/M, afterwards, the residential quarter passes to concentrated other residential quarters of same cooperation with sequence number and the collaboration mode information of the shared Resource Block of own edge customer by X2 interface, simultaneously, other concentrated residential quarters of cooperation also pass to this residential quarter to the sequence number of the shared Resource Block of own edge customer and collaboration mode information by X2 interface;

(5) residential quarter concentrates adjacent residential quarter to transmit the information of coming according to cooperation, judges that data-signal transmitted power on each Resource Block is set to 0 adjacent cell id:

If the data-signal transmitted power of i the Resource Block in residential quarter is p Int, and taken by this Cell Edge User, and collaboration mode information is " 01 " that then the data-signal transmitted power with i Resource Block of this adjacent residential quarter, residential quarter is set to 0;

If the data-signal transmitted power of i the Resource Block in residential quarter is p Int, and taken by this Cell Edge User, and collaboration mode information is " 10 " that then the data-signal transmitted power with i Resource Block of these No. two adjacent residential quarters, residential quarter is set to 0;

If the data-signal transmitted power of i the Resource Block in residential quarter is p Int, and taken by this Cell Edge User, and collaboration mode information is " 11 " that then the data-signal transmitted power with i Resource Block of these two adjacent residential quarters, residential quarter is set to 0;

If the data-signal transmitted power of i Resource Block of residential quarter is not p Int, perhaps do not taken by this Cell Edge User, then the data-signal transmitted power of i the Resource Block in two adjacent residential quarters, this residential quarter declines 0;

Wherein, and i ∈ (1,2 ..., M), M represents the number of local resource piece;

Three residential quarters that same cooperation is concentrated are carried out above-mentioned judgement successively, three residential quarters judge on each Resource Block finish after, the residential quarter is put power the gross power of saving on 0 the Resource Block and is designated as P ';

(6) residential quarter is given the gross power P ' additional allocation of saving and is taken by edge customer and the data-signal transmitted power is not 0 Resource Block, and each Resource Block data-signal transmitted power is adjusted, and obtains each Resource Block final data signal transmitting power And then calculate Signal to Interference plus Noise Ratio final on each Resource Block Wherein, and i ∈ (1,2 ..., M), M represents the number of local resource piece;

(7) residential quarter is according to the final Signal to Interference plus Noise Ratio of above-mentioned each Resource Block Send data, and by network terminal judge and whether satisfy mod (t, T)=1 this condition is returned step (3) if condition is set up, otherwise return step (4), wherein, t represents that the residential quarter sends the number of times of data, and T represents the user feedback cycle, be 5 milliseconds, mod (t, T) remainder of expression t after divided by T.

The present invention compares with existing ICIC technology has following advantage:

The present invention is owing to adopt the interference coordination that carries out the minizone based on the feedback of edge customer, and edge customer can the Dynamic Selection collaboration mode at each Resource Block, has reduced the waste of cell frequency resources; Because different power is distributed according to the difference of edge customer collaboration mode in the residential quarter, not only guarantee the edge customer spectrum efficiency simultaneously, also made the average spectral efficiency (ase) of residential quarter increase.

Description of drawings

Fig. 1 is flow chart of the present invention;

Fig. 2 is cell structure schematic diagram of the present invention;

Fig. 3 is the contrast simulation figure of the present invention and traditional IC IC technology;

Fig. 4 is the contrast simulation figure with power distribution method of the present invention and conventional power distribution method.

Embodiment

Cell structure such as Fig. 2 among the present invention, each hexagon among Fig. 2 is divided into three residential quarters, and hexagonal centre is base station eNB, each three residential quarter of eNB control.

With reference to Fig. 1, performing step of the present invention is as follows:

The present invention is example with the cell1 residential quarter, describes implementation step.

Step 1, network terminal is set up the cooperation collection statically, each cooperation collection is made up of three adjacent residential quarters, with reference to Fig. 2, the black dotted lines area surrounded is formed a cooperation collection among Fig. 2, and three residential quarters that this cooperation is concentrated are labeled as cell1, cell2 and cell3, wherein cell2 is the adjacent residential quarter of cell1, and cell3 is No. two adjacent residential quarters of cell1.

Step 2, definition edge customer and central user.

Be example with the user UE1 among the cell1, the eNB1 base station is G to the large scale decline yield value of user UE1, and eNB2 base station and eNB3 base station are respectively G to the large scale of the user UE1 yield value that declines 1And G 2, the bigger G ' that is designated as wherein, if satisfy: G-G '<A, then UE1 is defined as edge customer, otherwise is defined as central user, and A is predefined thresholding, and A=3dB supposes to have among the cell1 two users, and UE1 is edge customer, user centered by the UE2.

Step 3, edge customer UE1 feeds back the Signal to Interference plus Noise Ratio SINR on each Resource Block iWith collaboration mode information, collaboration mode information represents with 2 bits; Central user UE2 feeds back the Signal to Interference plus Noise Ratio SINR ' on each Resource Block i, wherein, and i ∈ (1,2 ..., M), M represents the number of local resource piece.

Signal to Interference plus Noise Ratio when (3.1) edge customer UE1 utilizes following formula to calculate respectively not have on each Resource Block adjacent residential quarter to participate in cooperation Signal to Interference plus Noise Ratio when cooperation concentrates the bigger adjacent residential quarter of interference power to participate in cooperation Signal to Interference plus Noise Ratio when concentrating cell2 all to participate in cooperating with cell3 with cooperation

SINR no i = p i g s i N 0 i + N ICI i + p i g fir i + p i g sec i ,

SINR one i = p i g s i N 0 i + N ICI i + p i g l i ,

SINR two i = p i g s i N 0 i + N ICI i ,

I ∈ (1,2 ..., M), M represents the number of local resource piece

Wherein, p iBe the reference signal transmitted power on i Resource Block of cell1, the reference signal transmitted power of all residential quarters on i Resource Block all equates; Be the channel yield value of base station eNB 1 to edge customer UE1 on i the Resource Block, Be the channel yield value of base station eNB 2 to edge customer UE1 on i the Resource Block, Be the channel yield value of base station eNB 3 to edge customer UE1 on i the Resource Block, Be the white noise power on i the Resource Block, Be on i the Resource Block among Fig. 2 all residential quarters beyond the black dotted lines enclosing region to the interference power of edge customer UE1, For With In less yield value;

(3.2) edge customer UE1 determines Signal to Interference plus Noise Ratio SINR on each Resource Block according to following method iWith collaboration mode information, i ∈ (1,2 ..., M), M represents the number of local resource piece:

If satisfy: And Then do not need adjacent residential quarter to participate in cooperation, Collaboration mode information is represented with " 00 ";

If satisfy: Then need to cooperate and concentrate a bigger adjacent residential quarter of interference power to participate in cooperation, If participating in the residential quarter of cooperation is cell2, then collaboration mode information is represented with " 01 ", is cell3 if participate in the residential quarter of cooperation, and then collaboration mode information is represented with " 10 ";

If satisfy: And Then need cell2 and cell3 to participate in cooperation, Collaboration mode information is represented with " 11 ";

(3.3) central user UE2 utilizes following formula to calculate Signal to Interference plus Noise Ratio SINR ' on each Resource Block i:

I ∈ (1,2 ..., M), M represents the number of local resource piece

Wherein, p iBe the reference signal transmitted power on i the Resource Block in residential quarter, Be the channel yield value of i Resource Block base station eNB 1 to central user UE2, Be the white noise power on i the Resource Block, It is the interference power that this central user is arrived in other all residential quarters beyond the cell1 on i the Resource Block;

(3.4) the Signal to Interference plus Noise Ratio SINR on edge customer UE1 each Resource Block that will obtain iGive cell1, the Signal to Interference plus Noise Ratio SINR ' on each Resource Block that central user UE2 will obtain with the collaboration mode feedback information iFeed back to cell1, and i ∈ (1,2 ..., M), M represents the number of local resource piece.

Step 4, cell1 is according to the SINR that receives iAnd SINR ' iI ∈ (1,2, ..., M), proportionally fair algorithm is edge customer UE1 and central user UE2 distributes resource blocks, and a Resource Block only allows by a CU, M the Resource Block of total transmitted power P mean allocation of cell data signal to this residential quarter, i.e. the primary data signal transmitting power p of each Resource Block Int=P/M, afterwards, cell1 passes to cell2 and cell3 with sequence number and the collaboration mode information of the shared Resource Block of edge customer UE1 by X2 interface, and simultaneously, cell2 and cell3 also pass to cell1 to the sequence number of the shared Resource Block of own edge customer and collaboration mode information by X2 interface.

Step 5, the residential quarter concentrates adjacent residential quarter to transmit the information of coming according to cooperation, judges that data-signal transmitted power on each Resource Block is set to 0 adjacent cell id.

If the data-signal transmitted power of i the Resource Block in residential quarter is p Int, and taken by this Cell Edge User, and collaboration mode information is " 01 " that then the data-signal transmitted power with i Resource Block of this adjacent residential quarter, residential quarter is set to 0;

If the data-signal transmitted power of i the Resource Block in residential quarter is p Int, and taken by this Cell Edge User, and collaboration mode information is " 10 " that then the data-signal transmitted power with i Resource Block of these No. two adjacent residential quarters, residential quarter is set to 0;

If the data-signal transmitted power of i the Resource Block in residential quarter is p Int, and taken by this Cell Edge User, and collaboration mode information is " 11 " that then the data-signal transmitted power with i Resource Block of these two adjacent residential quarters, residential quarter is set to 0;

If the data-signal transmitted power of i Resource Block of residential quarter is not p Int, perhaps do not taken by this Cell Edge User, then the data-signal transmitted power of i the Resource Block in two adjacent residential quarters declines 0;

Wherein, and i ∈ (1,2 ..., M), M represents the number of local resource piece;

On each Resource Block, cell1 at first carries out above-mentioned judgement, after cell1 finishes judgement, the data-signal transmitted power of some Resource Block is put 0 among cell2 and the cell3, cell2 carries out aforesaid operations more then, the data-signal transmitted power of some Resource Block is put 0 among cell1 and the cell3, and after same cell3 finished above-mentioned judgement, the data-signal transmitted power of some Resource Block was put 0 among cell1 and the cell2;

For cell1, it is K that the tentation data signal transmitting power is set to 0 Resource Block number, puts on the Resource Block after 0 the data-signal transmitted power by original p IntBecome 0, namely each Resource Block will have been saved power p Int, the power that K Resource Block saved altogether is: P '=p IntK.

Step 6, cell1 distributes the gross power P ' that saves, and the data-signal transmitted power of adjusting each Resource Block obtains each Resource Block final data signal transmitting power, and then calculates Signal to Interference plus Noise Ratio final on each Resource Block.

(6.1) cell1 gives the gross power P ' additional allocation of saving according to collaboration mode information and is taken by edge customer and the data-signal transmitted power is not 0 Resource Block:

If collaboration mode information is " 00 ", then each Resource Block additional allocation to power be 0;

If collaboration mode information is " 01 " or " 10 ", then each Resource Block additional allocation to power be: P '/(R+2Q);

If collaboration mode information is " 11 ", then each Resource Block additional allocation to power be: 2P '/(R+2Q);

Wherein, R is the number that is taken by edge customer, collaboration mode information for " 01 " or " 10 " and data-signal transmitted power is not 0 Resource Block, 0≤R<M, Q is the number that is taken by edge customer, collaboration mode information for " 11 " and data-signal transmitted power is not 0 Resource Block, 0≤Q<M, M represent the number of local resource piece;

(6.2) cell1 adjusts data-signal transmitted power on each Resource Block, obtains each Resource Block final data signal transmitting power I ∈ (1,2 ..., M), M represents the number of local resource piece:

If the data-signal transmitted power of i Resource Block is 0, then its final data signal transmitting power still is 0;

If i Resource Block by edge customer take, collaboration mode information is that " 00 " and data-signal transmitted power are not 0, then its final data signal transmitting power is adjusted into primary data signal transmitting power p Int, namely p last i = p int ;

If i Resource Block by edge customer take, collaboration mode information is that " 01 " or " 10 " and data-signal transmitted power are not 0, then its final data signal transmitting power is adjusted into the power sum p that primary data signal transmitting power and additional allocation arrive Int+ P '/(R+2Q), namely

If i Resource Block by edge customer take, collaboration mode information is that " 11 " and data-signal transmitted power are not 0, then its final data signal transmitting power is adjusted into the power sum p that primary data signal transmitting power and additional allocation arrive Int+ 2P '/(R+2Q), namely

Be not 0 Resource Block to center CU and data-signal transmitted power, its final data signal transmitting power is adjusted into primary data signal transmitting power p Int, namely

Wherein, R is the number that is taken by edge customer, collaboration mode information for " 01 " or " 10 " and data-signal transmitted power is not 0 Resource Block, 0≤R<M, Q is the number that is taken by edge customer, collaboration mode information for " 11 " and data-signal transmitted power is not 0 Resource Block, 0≤Q<M, M represent the number of local resource piece;

(6.3) cell1 is according to each Resource Block final data signal transmitting power Obtain Signal to Interference plus Noise Ratio final on each Resource Block

I ∈ (1,2 ..., M), M represents the number of local resource piece

Wherein, Be each Resource Block final data signal transmitting power, p IntBe the primary data signal transmitting power of each Resource Block, For the Signal to Interference plus Noise Ratio of edge customer UE1 or central user UE2 feedback, if i Resource Block taken by edge customer UE1, then Be the Signal to Interference plus Noise Ratio of edge customer UE1 feedback, namely If i Resource Block taken by central user UE2, then Centered by the Signal to Interference plus Noise Ratio of user UE2 feedback, i.e. SINR Back=SINR ' i

Step 7, cell1 is according to above-mentioned final Signal to Interference plus Noise Ratio Send data, and by network terminal judge and whether satisfy mod (t, T)=1 this condition is returned step (3) if condition is set up, otherwise return step (4), wherein, t represents that the residential quarter sends the number of times of data, and T represents the user feedback cycle, be 5 milliseconds, mod (t, T) remainder of expression t after divided by T.

Effect of the present invention can further specify by following emulation:

1. simulated conditions

The main simulation parameter setting of the present invention such as table 1.

2. emulation content and analysis

2.1) for verifying that the present invention when improving the edge customer spectrum efficiency, can also guarantee the residential quarter average spectral efficiency (ase), the present invention and traditional FFR and SFR method have been carried out emulation, simulation result such as Fig. 3.Transverse axis is represented spectrum efficiency among Fig. 3, and the longitudinal axis is represented cumulative distribution function.

As can be seen from Figure 3, compare with FFR, the spectrum efficiency of edge customer of the present invention is higher, and the residential quarter average spectral efficiency (ase) is also higher; Compare with SFR, the spectrum efficiency of edge customer of the present invention is low slightly, but the spectrum efficiency of central user of the present invention improves a lot, and the residential quarter average spectral efficiency (ase) is greatly improved.

2.2) in order to verify the validity of power distribution method of the present invention, distribution method of the present invention in the concrete implementation step (6.1) and two kinds of traditional distribution methods have been carried out emulation, simulation result such as Fig. 4, wherein a kind of conventional allocation method is given for the power P ' mean allocation that will save and is taken by edge customer and the data-signal transmitted power is not 0 Resource Block, represent with case1 among Fig. 4, it is not 0 Resource Block that another kind of traditional distribution method is given the data-signal transmitted power for the power P ' mean allocation that will save, represents with case2 among Fig. 4.Transverse axis is represented spectrum efficiency among Fig. 4, and the longitudinal axis is represented cumulative distribution function.

As can be seen from Figure 4, in the case1 method, the spectrum efficiency of edge customer is higher, but the residential quarter average spectral efficiency (ase) is lower; And in the case2 method, the spectrum efficiency of edge customer is lower, but the residential quarter average spectral efficiency (ase) is higher; Compare with case2 with case1, power distribution method of the present invention makes edge customer and residential quarter average spectral efficiency (ase) all higher.

The main simulation parameter of table 1

Claims (7)

1. the many local resources distribution method based on user feedback comprises the steps:
(1) set up the cooperation collection statically by network terminal, each cooperation collection is made up of three adjacent residential quarters, and there are two adjacent residential quarters each residential quarter, is defined as an adjacent residential quarter and No. two adjacent residential quarters respectively;
(2) base station of residential quarter, user place is designated as G to this user's large scale decline yield value, the base station of cooperation being concentrated two adjacent residential quarters is designated as G respectively to this user's the large scale yield value that declines 1And G 2, the bigger G' that is designated as wherein, if satisfy: G-G'<A, then the user is defined as edge customer, otherwise is defined as central user, and A is predefined thresholding, A=3dB;
(3) edge customer feeds back the Signal to Interference plus Noise Ratio SINR on each Resource Block iWith collaboration mode information, collaboration mode information is represented with 2 bits; Central user is fed back the Signal to Interference plus Noise Ratio SINR' on each Resource Block i, wherein, and i ∈ (1,2 ..., M), M represents the number of local resource piece;
(4) residential quarter is according to the SINR that receives iAnd SINR' iI ∈ (1,2, ..., M), proportionally fair algorithm is edge customer and central user distributes resource blocks, and a Resource Block only allows by a CU, M the Resource Block of total transmitted power P mean allocation of cell data signal to this residential quarter, i.e. the primary data signal transmitting power p of each Resource Block Int=P/M, afterwards, the residential quarter passes to concentrated other residential quarters of same cooperation with sequence number and the collaboration mode information of the shared Resource Block of own edge customer by X2 interface, simultaneously, other concentrated residential quarters of cooperation also pass to this residential quarter to the sequence number of the shared Resource Block of own edge customer and collaboration mode information by X2 interface;
(5) residential quarter concentrates adjacent residential quarter to transmit the information of coming according to cooperation, judges that data-signal transmitted power on each Resource Block is set to 0 adjacent cell id:
If the data-signal transmitted power of i the Resource Block in residential quarter is p Int, and taken by this Cell Edge User, and collaboration mode information is " 01 " that then the data-signal transmitted power with i Resource Block of this adjacent residential quarter, residential quarter is set to 0;
If the data-signal transmitted power of i the Resource Block in residential quarter is p Int, and taken by this Cell Edge User, and collaboration mode information is " 10 " that then the data-signal transmitted power with i Resource Block of these No. two adjacent residential quarters, residential quarter is set to 0;
If the data-signal transmitted power of i the Resource Block in residential quarter is p Int, and taken by this Cell Edge User, and collaboration mode information is " 11 " that then the data-signal transmitted power with i Resource Block of these two adjacent residential quarters, residential quarter is set to 0;
If the data-signal transmitted power of i Resource Block of residential quarter is not p Int, perhaps do not taken by this Cell Edge User, then the data-signal transmitted power of i the Resource Block in two adjacent residential quarters, this residential quarter declines 0;
Wherein, and i ∈ (1,2 ..., M), M represents the number of local resource piece;
Three residential quarters that same cooperation is concentrated are carried out above-mentioned judgement successively, three residential quarters judge on each Resource Block finish after, the residential quarter is put power the gross power of saving on 0 the Resource Block and is designated as P';
(6) residential quarter is given the gross power P' additional allocation of saving and is taken by edge customer and the data-signal transmitted power is not 0 Resource Block, and each Resource Block data-signal transmitted power is adjusted, and obtains each Resource Block final data signal transmitting power And then calculate Signal to Interference plus Noise Ratio final on each Resource Block Wherein, and i ∈ (1,2 ..., M), M represents the number of local resource piece;
(7) residential quarter is according to the final Signal to Interference plus Noise Ratio of above-mentioned each Resource Block Send data, and by network terminal judge and whether satisfy mod (t, T)=1 this condition is returned step (3) if condition is set up, otherwise return step (4), wherein, t represents that the residential quarter sends the number of times of data, and T represents the user feedback cycle, be 5 milliseconds, mod (t, T) remainder of expression t after divided by T.
2. the many local resources distribution method based on user feedback according to claim 1, wherein the related large scale decline yield value of step (2) comprises path loss gain, shadow fading gain and antenna direction gain.
3. the many local resources distribution method based on user feedback according to claim 1, wherein the described edge customer of step (3) feeds back the Signal to Interference plus Noise Ratio SINR on each Resource Block iWith collaboration mode information, carry out as follows:
Signal to Interference plus Noise Ratio when (3a) edge customer utilizes following formula to calculate respectively not have on each Resource Block adjacent residential quarter to participate in cooperation Signal to Interference plus Noise Ratio when cooperation concentrates a bigger adjacent residential quarter of interference power to participate in cooperation Signal to Interference plus Noise Ratio when concentrating two adjacent residential quarters to participate in cooperation with cooperation
SINR no i = p i g s i N 0 i + N ICI i + p i g fir i + p i g sec i ,
SINR one i = p i g s i N 0 i + N ICI i + p i g l i ,
SINR two i = p i g s i N 0 i + N ICI i ,
I ∈ (1,2, M..., M) number of expression local resource piece
Wherein, p iBe the reference signal transmitted power on i the Resource Block in residential quarter, the reference signal transmitted power of all residential quarters on i Resource Block all equates; Be the base station of residential quarter, i Resource Block top edge user place to the channel yield value of this edge customer, Be the base station of an adjacent residential quarter, residential quarter, i Resource Block top edge user place to the channel yield value of this edge customer, Be the base station of No. two adjacent residential quarters, residential quarter, i Resource Block top edge user place to the channel yield value of this edge customer, Be the white noise power on i the Resource Block, Be that i other cooperation beyond the Resource Block top edge user place cooperation collection concentrates all residential quarters to the interference power of this edge customer, For With In less yield value;
(3b) edge customer is determined Signal to Interference plus Noise Ratio SINR on each Resource Block according to following method iWith collaboration mode information, i ∈ (1,2 ..., M), M represents the number of local resource piece:
If satisfy: And Then do not need adjacent residential quarter to participate in cooperation, Collaboration mode information is represented with " 00 ";
If satisfy: Then need to cooperate and concentrate a bigger adjacent residential quarter of interference power to participate in cooperation, If participating in the residential quarter of cooperation is an adjacent residential quarter, then collaboration mode information is represented with " 01 ", is No. two adjacent residential quarters if participate in the residential quarter of cooperation, and then collaboration mode information is represented with " 10 ";
If satisfy: And Then need cooperation to concentrate two adjacent residential quarters to participate in cooperation, Collaboration mode information is represented with " 11 ";
(3c) the Signal to Interference plus Noise Ratio SINR on edge customer each Resource Block that will obtain iGive residential quarter, own place with the collaboration mode feedback information, and i ∈ (1,2 ..., M), M represents the number of local resource piece.
4. the many local resources distribution method based on user feedback according to claim 1, wherein the described central user of step (3) is fed back the Signal to Interference plus Noise Ratio SINR' on each Resource Block i, carry out as follows:
(3a') central user utilizes following formula to calculate Signal to Interference plus Noise Ratio SINR on each Resource Block i':
SINR i ′ = p i g c i N 0 i + N ICI i ′ , i ∈ ( 1 , 2 , . . . , M ) , M represents the number of local resource piece
Wherein, p iBe the reference signal transmitted power on i the Resource Block in residential quarter, Be the base station of residential quarter, central user place on i the Resource Block to the channel yield value of this central user, Be the white noise power on i the Resource Block, It is the interference power that this central user is arrived in other all residential quarters beyond the residential quarter, central user place on i the Resource Block;
(3b') the Signal to Interference plus Noise Ratio SINR' on central user each Resource Block that will obtain iFeed back to residential quarter, own place, and i ∈ (1,2 ..., M), M represents the number of local resource piece.
5. the many local resources distribution method based on user feedback according to claim 1, wherein the described residential quarter of step (6) is given the gross power P' additional allocation of saving and is taken by edge customer and the data-signal transmitted power is not 0 Resource Block, distributes according to the following rules:
If collaboration mode information is " 00 ", then each resource block assignments to power be 0;
If collaboration mode information is " 01 " or " 10 ", then each resource block assignments to power be: P'/(R+2Q);
If collaboration mode information is " 11 ", then each resource block assignments to power be: 2P'/(R+2Q);
Wherein, R is the number that is taken by edge customer, collaboration mode information for " 01 " or " 10 " and data-signal transmitted power is not 0 Resource Block, 0≤R<M, Q is the number that is taken by edge customer, collaboration mode information for " 11 " and data-signal transmitted power is not 0 Resource Block, 0≤Q<M, M represent the number of local resource piece.
6. the many local resources distribution method based on user feedback according to claim 1, wherein step (6) is described adjusts each Resource Block data-signal transmitted power, obtains each Resource Block final data signal transmitting power Adjust according to the following rules:
If the data-signal transmitted power of i Resource Block is 0, then its final data signal transmitting power still is 0;
If i Resource Block by edge customer take, collaboration mode information is that " 00 " and data-signal transmitted power are not 0, then its final data signal transmitting power is adjusted into primary data signal transmitting power p Int, namely p last i = p int ;
If i Resource Block by edge customer take, collaboration mode information is that " 01 " or " 10 " and data-signal transmitted power are not 0, then its final data signal transmitting power is adjusted into the power sum p that primary data signal transmitting power and additional allocation arrive Int+ P'/(R+2Q), namely
If i Resource Block by edge customer take, collaboration mode information is that " 11 " and data-signal transmitted power are not 0, then its final data signal transmitting power is adjusted into the power sum p that primary data signal transmitting power and additional allocation arrive Int+ 2P'/(R+2Q), namely
Be not 0 Resource Block to center CU and data-signal transmitted power, its final data signal transmitting power is adjusted into primary data signal transmitting power p Int, namely
Wherein, R is the number that is taken by edge customer, collaboration mode information for " 01 " or " 10 " and data-signal transmitted power is not 0 Resource Block, 0≤R<M, Q is the number that is taken by edge customer, collaboration mode information for " 11 " and data-signal transmitted power is not 0 Resource Block, 0≤Q<M, M represent the number of local resource piece.
7. the many local resources distribution method based on user feedback according to claim 1, wherein final Signal to Interference plus Noise Ratio on each Resource Block described in the step (6) Utilize following formula to calculate:
SINR last i = p last i / p int · SINR back i , i ∈ ( 1,2 , . . . , M ) , M represents the number of local resource piece
Wherein, Be each Resource Block final data signal transmitting power, p IntBe the primary data signal transmitting power of each Resource Block, For the Signal to Interference plus Noise Ratio of edge customer or central user feedback, if i Resource Block taken by edge customer, then Be the Signal to Interference plus Noise Ratio of edge customer feedback, namely If i Resource Block taken by central user, then Centered by the Signal to Interference plus Noise Ratio of user feedback, namely SINR back = SINR i ′ .
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