CN101527673A - Method and system for allocating resources of single-user MIMO - Google Patents

Abstract

The invention discloses a method for allocating resources of single-user MIMO, which comprises the following steps: acquiring resource information of a target CQI, and allocating the resources on corresponding virtual antennas according to data quantity required to be scheduled; preoccupying corresponding resources on other virtual antennas according to a resource allocating result; and judging whether the preoccupation of the resources of the virtual antennas meets a presetting condition, if so, determining to occupy the corresponding resources of the virtual antennas. The method can ensure equity of users on the premise of guaranteeing the requirement of service QoS, maximize the throughput of a system, and improve the capacity of serving the users and the bearing capacity of the system.

Description

The resource allocation methods of Single User MIMO and system

Technical field

The present invention relates to wireless communication technology field, particularly relate to a kind of resource allocation methods of Single User MIMO and a kind of resource allocation system of Single User MIMO.

Background technology

Maturation along with 3G standard, the research that people are primarily focused on gradually to future broadband wireless communication systems comes up. and following mobile communication system is a system focusing on people, with the individual sexual demand that satisfies the people is the center, at different business demands and environment, no matter accomplish that real anyone at any time and any place, can carry out the free communication of any class of business.

Along with system passes improving constantly of elm speed, exist two stern challenges: the multipath fading letter meets with and bandwidth efficiency. and OFDM (OFDM) technology has reduced the influence of multipath fading by being flat channel with frequency-selective channel in the internal conversion of frequency city.Multiple-input and multiple-output (MIMO) technology can produce in the space independently that parallel channel transmits multiplex data stream simultaneously, has improved the biography elm speed of system effectively, promptly increases spectrum efficiency under the situation that does not increase system bandwidth and transmitting power.Like this, OFDM and two kinds of technology of MIMO are combined, just can reach very high biography elm speed and very strong reliability simultaneously.

At present, at Single User MIMO (SU-MIMO, all space division multiplexings (SDM) data flow all the is used for a UE) resource allocation process based on the OFDM technology, initial transmission can use channel quality indication (CQI) best resource to dispatch as far as possible usually.Because SDM can be divided into many code words SDM and single codeword SDM (single codeword can be regarded the special case of many code words as), in practice, the resource allocation algorithm of single codeword can for:

Input:

I) obtain current assignable resource collection λ _DL-L

Ii) with described resource collection λ _DL-LThe corresponding CQI of middle Physical Resource Block (PRB) is designated as $C_{{\mathrm{\λ}}_{\mathrm{DL}-L}}=\{c_u^1,c_u^2...,c_u^{q_u}\},$ U ∈ U wherein _DL, q _u=N (λ _DL-L);

Iii) radio bearer RB _CData volume---transport block set TBS in RLC (wireless link control) layer transmission buffering area ^R

Output:

I) be RB _CThe resource collection R that distributes _C-L

Ii) RB _CThe data volume A that in this scheduling, can send _C-L

Iii) obtain Adaptive Modulation and Coding (AMC) parameter MCS _C-L(modulating-coding format set).

The specific algorithm process is:

1. order ${\mathrm{CQI}}_{\max }=\underset{k=\mathrm{1,2},...,q_u}{\arg \max }\left(c_u^k\right);$

2. according to MCS _C-LBe CQI _MaxThe MCS parameter of down spendable high-order;

3. basis

Statistics λ _DL-LIn can use MCS _C-LPRB set, be designated as R _C-L, make M _C=N (R _C-L);

4. according to CQI _MaxDetermine TBS ^U, RB then _CThe maximum amount of data TBS that in this time slot scheduling, can transmit ^F=δ _DL(TBS ^U* M _C);

If 5. TBS ^R≤ TBS ^F, the quantity N of assignable PRB then _CGet more than or equal to

Smallest positive integral, with seasonal A _C-L=TBS ^RIf TBS ^R＞TBS ^F, N then _C=M _C, and A _C-L=TBS ^F

If 6. N _C＜M _C, then from R _C-LThe middle N that selects _CIndividual PRB is designated as R _C-L

In many code words SDM, a plurality of code streams can absolute coding, and adopts individual CRC, to each code stream, can adopt independently link adaptation techniques.In the reality resource allocation algorithm of many code words in the following example shown in:

Suppose Single User MIMO, under the situation of 2 antennas, if the CQI of PRB correspondence is on the antenna 1 based on the MCW pattern

The CQI of PRB correspondence is on the antenna 2

U ∈ U wherein _DL(UE set), q _uEqualing the every day line can be with the quantity of PRB, then available PRB set this moment ${\mathrm{\Ω}}_{\mathrm{DL}-L}=\{{\mathrm{PRB}}_1^1,{\mathrm{PRB}}_2^1,...,{\mathrm{PRB}}_{q_u}^1,{\mathrm{PRB}}_1^2,{\mathrm{PRB}}_2^2,...,{\mathrm{PRB}}_{q_u}^2\},$ PRB wherein _i ¹Be the PRB on the antenna 1, PRB _j ²Be the PRB on the antenna 2,1≤i, j≤q _uPRB _i ¹And PRB _i ²Form PRB ' _iScheduling will be at Ω _DL-LOn carry out, but two PRB that belong to same PRB ' must distribute to same UE.Safeguarding η _DL-LThe time, also need to safeguard corresponding set: θ _DL-L ^u: the unallocated use of PRB wherein, but another PRB among the corresponding PRB ' has distributed to u, u ∈ U _DL

The resource allocation algorithm process of single time slot HARQ initial transmission is as follows:

Input:

I) resource collection that can be used for concentrating (localized) to distribute ${\mathrm{\λ}}_{\mathrm{DL}-L}=E_{\mathrm{DL}-L}^{\′}\∪{\mathrm{\θ}}_{\mathrm{DL}-L}^u,$ U is a current UE;

Ii) λ _DL-LThe CQI:{c of middle PRB correspondence ₁ ^u, c ₂ ^u..., c _n ^u, n=N (λ _DL-L);

Iii) current RB _jData volume TBS in RLC transmission buffering area ^R

Output:

I) be RB _jThe resource collection R that distributes _C-L

Ii) RB _jThe data volume A that in this scheduling, can send _C-L

Iii) AMC parameter MCS _C-L

The specific algorithm process is:

1. order ${\mathrm{CQI}}_{\max }=\underset{k=\mathrm{1,2},...,n}{\arg \max }\left(c_u^k\right);$

2. according to MCS _C-LBe CQI _MaxThe MCS parameter of down spendable high-order, corresponding TBS ^UBe designated as TBS _Max ^U

3. add up λ _DL-LIn be positioned at and can use MCS on the same antenna _C-LPRB set, be designated as R _C-L, make M _C=N (R _C-L) (under many antennas situation, get M _CThe greater);

4. RB then _jThe maximum amount of data that in this dispatching cycle, can transmit ${\mathrm{TBS}}^F={\mathrm{\δ}}_{\mathrm{DL}}({\mathrm{TBS}}_{\max }^U\×M_C);$

If 5. TBS ^R≤ TBS ^F, the quantity N of the PRB that may distribute then _CGet more than or equal to

Smallest positive integral, A simultaneously _C-L=TBS ^RIf TBS ^R＞TBS ^F, N then _C=M _C, and A _C-L=TBS ^F

6. if fruit N _C＜M _C, then from R _C-LThe middle N that selects _CIndividual PRB is designated as R _C-L, for improving the level of resources utilization and power system capacity, should be preferentially from θ _DL-L ^uThe middle selection.

As can be seen, in existing Single User MIMO resource allocation process, the user appears in single codeword resource allocation meeting to be obtained less than adequate resources because of priority is low, thus the poor problem of service quality (Qos) that the user is obtained; And user and business that some priority are high take ample resources, the number of users of service in the system is reduced, thereby the problem that causes some users to obtain serving promptly can't satisfy the Qos requirement.Many code sources distribute the resource that then can occur on empty antenna of single CU many, use for surely this user and the resource on other the empty antenna is another, other users can't use this part resource, thereby the user who causes system to serve reduces or influences other professional problems, that is can't satisfy the Qos requirement.

Therefore, present stage needs the urgent technical problem that solves of those skilled in the art to be exactly, provides a kind of under the prerequisite that guarantees the QoS of survice demand, and assurance user's fairness also makes the resource allocation methods of the throughput-maximized Single User MIMO of system.

Summary of the invention

Technical problem to be solved by this invention provides a kind of resource allocation methods of Single User MIMO, in order under the prerequisite that guarantees the QoS of survice demand, guarantee user's fairness and make the throughput-maximized of system, improve service ability and system bearing ability the user.

Another object of the present invention provides a kind of resource allocation system of Single User MIMO, in order to guarantee said method realization and application in practice.

In order to solve the problems of the technologies described above, the embodiment of the invention discloses a kind of resource allocation methods of Single User MIMO, comprising:

Obtain the resource information of target CQI, the data volume Resources allocation of on corresponding empty antenna, dispatching as required;

Take respective resources on other empty antenna in advance according to described resource allocation result;

Judge taking in advance of resource on the described empty antenna whether satisfy pre-conditioned, if then determine to take the respective resources on the described empty antenna.

Preferably, described resource is the single codeword resource, and the described allocation step of obtaining comprises:

Obtain the available resources of all empty antennas,, and choose target CQI according to the size ordering of the corresponding CQI of described resource;

Add up each empty antenna and have the resource number of described target CQI;

The location has the maximum empty aerial position of resource number of described target CQI, the described maximum resource numbers of foundation and the data volume Resources allocation on described empty antenna that need dispatch.

Preferably, described condition judgment step comprises:

Judge whether to also have the data volume that needs scheduling, if having, whether the data volume that then further judgement has been dispatched satisfies the scheduling thresholding, if then determine to take the respective resources on the described empty antenna;

If do not need the data volume of dispatching, then directly determine to take the respective resources on the described empty antenna.

Preferably, described condition judgment step also comprises:

If described data volume of having dispatched does not satisfy the scheduling thresholding, then exist under the condition of surplus resources, redefine target CQI, to redistribute resource according to the described target CQI that redefines.

Preferably, the described target CQI that redefines is for less than current goal CQI and greater than the CQI of other CQI.

Preferably, described resource is many code sources, and the described allocation step of obtaining comprises:

Obtain the available resources of all empty antennas,, and choose target CQI according to the size ordering of the corresponding CQI of described resource;

Search the resource units and the empty aerial position of described target CQI correspondence, the described resource units of foundation and the data volume Resources allocation on described empty antenna that need dispatch.

Preferably, the described step that takies in advance comprises:

According to the frequency domain position at described resource units place, take the resource of corresponding frequency domain position on other empty antenna in advance.

Preferably, described condition judgment step comprises:

Calculate the remaining data dispatching amount that needs according to the data volume of having dispatched;

If also have the data volume that needs scheduling, then judge whether to distribute the resource of all empty antennas;

If, then satisfy under the condition of scheduling thresholding in the data volume of having dispatched, determine to take the resource of corresponding frequency domain position on all empty antennas;

If not, the data volume that the then resource of distributing corresponding frequency domain position on the empty antenna of next bar, and renewal need be dispatched.

Preferably, described condition judgment step also comprises:

As if the data volume that does not need to dispatch, then directly determine to take the resource of corresponding frequency domain position on all empty antennas.

Preferably, described condition judgment step also comprises:

If described data volume of having dispatched does not satisfy the scheduling thresholding, then when having surplus resources, redefine target CQI, to redistribute resource according to the described target CQI that redefines.

Preferably, the described step that redefines target CQI comprises:

Judge whether to exist a CQI who equates with current goal CQI, if then redefining a described CQI is target CQI; If not, then redefine less than current goal CQI and be target CQI greater than the 2nd CQI of other CQI.

The embodiment of the invention also discloses a kind of resource allocation system of Single User MIMO, it is characterized in that, comprising:

Resource distribution module is used to obtain the resource information of target CQI, the data volume Resources allocation of scheduling as required on corresponding empty antenna;

Take module in advance, be used for taking respective resources on other empty antenna in advance according to described resource allocation result;

Pass judgment on module, be used to judge taking in advance of resource on the described empty antenna whether satisfy pre-conditioned, if then determine to take the respective resources on the described empty antenna.

Preferably, described resource is the single codeword resource, and described resource distribution module comprises:

Target CQI chooses submodule, is used to obtain the available resources of all empty antennas, according to the size ordering of the corresponding CQI of described resource, and chooses target CQI;

The statistics submodule is used to add up the resource number that each empty antenna has described target CQI;

The locator module is used to locate the maximum empty aerial position of resource number that has described target CQI;

First distribution sub module is used for the data volume Resources allocation on described empty antenna according to described maximum resource numbers and needs scheduling.

Preferably, described judge module comprises:

First judges submodule, is used to judge whether the data volume of needs scheduling in addition, if having, then triggers second and judges submodule; If do not have, then trigger first and take submodule;

Second judges submodule, is used to judge whether the data volume of having dispatched satisfies the scheduling thresholding, if then trigger first and take submodule;

First takies submodule, is used to determine to take the respective resources on the described empty antenna.

Preferably, described judge module also comprises:

Target CQI updating submodule is used for not satisfying the scheduling thresholding in described data volume of having dispatched, and exists under the condition of surplus resources, redefines target CQI.

Preferably, the described target CQI that redefines is for less than current goal CQI and greater than the CQI of other CQI.

Preferably, described resource is many code sources, and described resource distribution module comprises:

Target CQI chooses submodule, is used to obtain the available resources of all empty antennas, according to the size ordering of the corresponding CQI of described resource, and chooses target CQI;

Search submodule, be used to search the resource units and the empty aerial position of described target CQI correspondence;

Second distribution sub module is used for the data volume Resources allocation on described empty antenna according to described resource units and needs scheduling.

Preferably, the described module that takies in advance comprises:

Frequency domain resource takies submodule in advance: according to the frequency domain position at described resource units place, take the resource of corresponding frequency domain position on other empty antenna in advance.

Preferably, described judge module comprises:

The data volume updating submodule is used for calculating the remaining data dispatching amount that needs according to the data volume of having dispatched;

First judges submodule, is used to judge whether the data volume of needs scheduling in addition, if having, then triggers the 3rd and judges submodule; If do not have, then trigger second and take submodule;

The 3rd judges submodule, is used to judge whether to distribute the resource of all empty antennas; If then trigger second and judge submodule; If not, then trigger the cycle assignment submodule;

Second judges submodule, is used to judge whether the data volume of having dispatched satisfies the scheduling thresholding, if then trigger second and take submodule;

The cycle assignment submodule is used for distributing the resource of corresponding frequency domain position on the empty antenna of next bar, and calls the data volume that described data volume updating submodule is upgraded needs scheduling;

Second takies submodule, is used to determine to take the resource of corresponding frequency domain position on all empty antennas.

Preferably, described judge module also comprises:

Target CQI updating submodule is used for not satisfying the scheduling thresholding in described data volume of having dispatched, and exists and have under the condition of surplus resources, redefines target CQI.

Preferably, described target CQI updating submodule comprises:

The one CQI selectes the unit, is used for when existing with a CQI that current goal CQI equates, and selecting a described CQI is target CQI;

The 2nd CQI selectes the unit, is used for not with a CQI that current goal CQI equates the time, selectes less than current goal CQI and is target CQI greater than the 2nd CQI of other CQI.

Compared with prior art, the embodiment of the invention has the following advantages:

At first, the embodiment of the invention is by taking respective resources in advance according to scheduling result, whether the reasonability of utilizing pre-conditioned judgement to take in advance then specifically takies with definite, take in advance can be understood as the target available resources are taken in current scheduling temporarily, and specifically whether take and to determine according to last scheduling result.The present invention is by this reservation and the rational and effective method of salary distribution to interface-free resources, improved user's the service ability and the bearing capacity of system, avoid single user's scheduling not satisfy service needed or take excessive system resource causing other users to can not get problems such as effectively service, thereby under the prerequisite that guarantees the QoS of survice demand, guarantee user's fairness and make the throughput-maximized of system.

Particularly, no matter relating to single codeword still is the resource allocation process of many code words, whether whether use the embodiment of the invention all can dispatch the data volume of finishing and having dispatched according to data volume and satisfy and dispatch two conditions of thresholding and determine the reasonability that takies in advance, thereby can be under the situation that guarantees Qos, the simple realization reasonable resources is distributed, and can guarantee user's fairness, service is provided for more business.

Description of drawings

Fig. 1 is the flow chart of the resource allocation methods embodiment 1 of a kind of Single User MIMO of the present invention;

Fig. 2 is the flow chart of the resource allocation methods embodiment 2 of a kind of Single User MIMO of the present invention;

Fig. 3 uses the flow chart that embodiment shown in Figure 2 carries out the single codeword resource allocation;

Fig. 4 is the flow chart of the resource allocation methods embodiment 3 of a kind of Single User MIMO of the present invention;

Fig. 5 uses the flow chart that embodiment shown in Figure 4 carries out the single codeword resource allocation;

Fig. 6 is the structure chart of the resource allocation system embodiment 1 of a kind of Single User MIMO of the present invention;

Fig. 7 is the structure chart of the resource allocation system embodiment 2 of a kind of Single User MIMO of the present invention;

Fig. 8 is the structure chart of the resource allocation system embodiment 3 of a kind of Single User MIMO of the present invention.

Embodiment

For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, the present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.

The embodiment of the invention is mainly described the Single User MIMO scheduled resources assigning process of tdd mode based on the OFDMA channel, and TDD is a kind of duplex mode of communication system, is used for separating in mobile communication system receiving and transfer channel (or uplink downlink).Receiving and transmit in the mobile communication system of tdd mode is to be the different time-gap of carrier wave at same frequency channels, separates receiving and transfer channel with the time of assurance.Based on this application situation, one of core idea of the embodiment of the invention is, by taking respective resources in advance according to scheduling result, whether the reasonability of utilizing pre-conditioned judgement to take in advance then specifically takies with definite, take in advance can be understood as the target available resources are taken in current scheduling temporarily, and specifically whether take and to determine according to last scheduling result.The present invention is by this reservation and the rational and effective method of salary distribution to interface-free resources, improved user's the service ability and the bearing capacity of system, avoid single user's scheduling not satisfy service needed or take excessive system resource causing other users to can not get problems such as effectively service, thereby under the prerequisite that guarantees the QoS of survice demand, guarantee user's fairness and make the throughput-maximized of system.

With reference to figure 1, show the flow chart of the resource allocation methods embodiment 1 of a kind of Single User MIMO of the present invention, can may further comprise the steps:

Step 101, obtain the resource information of target CQI, on corresponding empty antenna according to the data volume Resources allocation of need scheduling;

Step 102, take respective resources on other empty antenna in advance according to described resource allocation result;

Step 103, judge taking in advance of resource on the described empty antenna whether satisfy pre-conditioned, if then determine to take the respective resources on the described empty antenna.

Be well known that,, use many inputs of many antennas and the pith that multiple output system (MIMO) becomes Long Term Evolution scheme (LTE) in the transmitter and receiver side in order to improve the throughput and the availability of frequency spectrum.Descending for LTE, 2 * 2 arrangement of antennas are the most basic configurations of MIMO, just at the base station end two transmitting antennas are arranged, and in end side two reception antennas are arranged.Also considering four arrangement of antennas situations simultaneously.Descending spatial reuse allows same downlink resource piece is transmitted into different transmitting antennas simultaneously.These data flow can belong to same user, i.e. Single User MIMO (SU-MIMO), and SU-MIMO can increase the data rate of unique user.The basic configuration of uplink single user MIMO antenna also is to have two transmitting antennas that two reception antennas are arranged in the base station at UE.A kind of special technology that is called as virtual (Virtual) MIMO is adopted in LTE in uplink.Normally two UE of 2 * 2 virtual MIMO each have a transmitting antenna and share identical time and frequency zone resource.Empty antenna described in the embodiment of the invention promptly can corresponding described virtual (Virtual) MIMO technology antenna, correspondingly, described taking in advance can be understood as temporarily taking in current resource allocation process, and whether specifically take then needs by just determining after the pre-conditioned judgement.

In practice, described resource may relate to single codeword resource and many code sources, with reference to figure 2, shows under the situation of single codeword resource, and the flow chart of the resource allocation methods embodiment 2 of a kind of Single User MIMO of the present invention can may further comprise the steps:

Step 201, obtain the available resources of all empty antennas,, and choose target CQI according to the size ordering of the corresponding CQI of described resource;

Generally speaking, initial transmission can use the best resource of CQI to dispatch, i.e. Zui Da CQI.

Step 202, add up the resource number that each empty antenna has described target CQI;

Step 203, location have the maximum empty aerial position of resource number of described target CQI, the described maximum resource numbers of foundation and the data volume Resources allocation on described empty antenna that need dispatch;

Step 204, take respective resources on other empty antenna in advance according to described resource allocation result;

Step 205, judge whether also have to need the data volume of scheduling, if having, then execution in step 206; If do not have, then direct execution in step 207;

Whether the data volume that step 206, judgement have been dispatched satisfies the scheduling thresholding, if then execution in step 207;

In practice, dissimilar business can corresponding different scheduling thresholding, those skilled in the art as required or the experience relative set get final product, the present invention does not limit this.

Step 207, determine to take the respective resources on the described empty antenna.

Preferably, the embodiment of the invention can also comprise:

Step 208, if described data volume of having dispatched does not satisfy the scheduling thresholding, then exist under the condition of surplus resources, redefine target CQI, to redistribute resource according to the described target CQI that redefines.

Preferably, the described target CQI that redefines can be for less than current goal CQI and greater than the CQI of other CQI.

The detailed process of carrying out the single codeword resource allocation with an application embodiment shown in Figure 2 is further described the present invention below.

Input:

The number of empty antenna: A _n

An empty antenna can be used for the resource collection of resource allocation:

Need to send the size of data buffer zone:

Output:

The result of the resource allocation of empty antenna:

The specific algorithm process can may further comprise the steps with reference to flow chart shown in Figure 3:

Step 301, judged whether resource can be used for the scheduling, if then execution in step 302; If not, then judge and do not satisfy the debugging condition, the resource allocation failure;

Step 302, the available resources of all antennas according to the ordering of the size of CQI;

Step 303, obtain the maximum CQI value of all empty antennas, and each empty antenna has the resource number of this maximum CQI; And obtain the data volume that needs scheduling, to prepare initial schedule;

The corresponding calculated process can realize by following specific algorithm:

(1) the CQI value of acquisition resource units is MCS _jThe available resource set of all empty antennas $P_a^w=\{{\mathrm{\λ}}_1,{\mathrm{\λ}}_2...,{\mathrm{\λ}}_h\},$ h∈k， $k=N\left({\mathrm{\λ}}_{\mathrm{DL}}^w\right),$ W={1,2 ..., A _n;

The CQI set of middle resource units correspondence $C_{{\mathrm{\λ}}_{\mathrm{DL}}^w}=\{C^1,C^2...,C^k\},$ $k=N\left({\mathrm{\λ}}_{\mathrm{DL}}^w\right),$ w＝{1，2…，A _n}；

(2) CQI that extracts each empty antenna maximum is: ${\mathrm{CQI}}_{\max }^w=\underset{l=\mathrm{1,2}...,k}{\arg \max }\left(C^l\right),$ $k=N\left({\mathrm{\λ}}_{\mathrm{DL}}^w\right),$ w＝{1，2…，A _n}；

(3) of the CQI set of the resource of each empty antenna according to correspondence $C_{{\mathrm{\λ}}_{\mathrm{DL}}^w}=\{C^1,C^2...,C^k\},$ According to CQI rank order from big to small, count on P _DL ^wSet in, be designated as $P_{\mathrm{DL}}^w=\{{\mathrm{\λ}}_{{\mathrm{MCS}}_j}^t,{\mathrm{\λ}}_{{\mathrm{MCS}}_j}^t...,{\mathrm{\λ}}_{{\mathrm{MCS}}_j}^t\},$ t∈k，w＝{1，2…，A _n}；

(4) from $C_{{\mathrm{\λ}}_{\mathrm{DL}}^w}=\{C^1,C^2...,C^k\},$ $k=N\left({\mathrm{\λ}}_{\mathrm{DL}}^w\right),$ W={1,2 ..., A _nIn get access on each empty antenna maximum CQI and be designated as: ${\mathrm{CQI}}_{\max }^w=\underset{l=\mathrm{1,2}...,k}{\arg \max }\left(C^l\right),$ w＝{1，2…，A _n}；

(5) from CQI _Max ^wIn obtain in all empty antennas maximum CQI and be: ${\mathrm{CQI}}_{\max }=\underset{s=\mathrm{1,2}...,w}{\arg \max }\left({\mathrm{CQI}}_{\max }^s\right);$

(6) determine that the regulation goal CQI that this scheduling is used is: ${\mathrm{CQI}}_{\mathrm{sche}}={\mathrm{CQI}}_{\max }^w;$

(7) basis $P_{\mathrm{DL}}^w=\{{\mathrm{\λ}}_{{\mathrm{MCS}}_j}^t,{\mathrm{\λ}}_{{\mathrm{MCS}}_j}^t...,{\mathrm{\λ}}_{{\mathrm{MCS}}_j}^t\},$ T ∈ k statistics can be used CQI _ScheResource units set be R _p ^w, w={1,2 ..., A _n, order $R_p^w=N\left(P_{\mathrm{DL}}^w\right),,$ w＝{1，2…，A _n}；

(8) from $R_p^w=N\left(P_{\mathrm{DL}}^w\right),$ W={1,2 ..., A _nIn the statistics each empty antenna have CQI _ScheThe resource number be $S_{\max }^x=\arg \max \left(R_p^w\right),$ w＝{1，2…，A _n}，x∈{A _n}

Step 304, according to the maximum resource number of target CQI and this CQI, the antenna with maximum resource number needs the data volume Resources allocation of scheduling;

Promptly as required the scheduling data volume

Use S _Max ^xWith empty aerial position Resources allocation with x write down.

Step 305, on other empty antenna, take the resource in respective tones territory in advance according to the result of this scheduling ${R^{\′}}_{{\mathrm{\λ}}_{A_n}}=N\left(P_{\mathrm{DL}}^w\right),$ w＝{1，2…，A _n}；

The described resource that takies in advance wouldn't offer other users and use.

Step 306, calculate the remaining data dispatching amount that needs according to the data volume of this scheduling, judging whether to have dispatched needs the data volume of dispatching, if then execution in step 307; Otherwise, execution in step 308;

Step 307, take corresponding resource on all empty antennas according to the result of this scheduling;

Step 308, judge that whether this scheduling satisfy the scheduling thresholding, if then execution in step 307; Otherwise execution in step 309;

Step 309, judge whether to also have remaining idling-resource, if having, then execution in step 310; If no, then return the result of resource allocation failure, discharge the described resource that takies in advance, promptly do not take corresponding resource.

In practice, the result who fails for described resource allocation can different types of service handle, and the present invention does not need this to limit.

Step 310, judge that whether current goal CQI is minimum, if then judge and do not satisfy schedulable condition, the resource allocation failure; Otherwise execution in step 311;

Step 311, current goal CQI is reduced a CQI, return step 304, to redistribute resource according to this fresh target CQI.

Above-mentioned steps 306-step 311 can realize by following specific algorithm:

(9) according to the data volume of this scheduling

Calculate remaining data volume ${\mathrm{BO}}_{L_i}={\mathrm{BO}}_{R_i}-{\mathrm{BO}}_{S_i},$ If ${\mathrm{BO}}_{R_i}==\mathrm{\φ}$ Then resource allocation is finished, and confirms to take the respective resources on all empty antennas $R_{{\mathrm{\λ}}_{A_n}}={R^{\′}}_{{\mathrm{\λ}}_{A_n}},$ Otherwise carry out next step;

(10) default scheduling thresholding Q _LinitIf judge this scheduling ${\mathrm{BO}}_{S_i}==Q_{\mathrm{linit}},$ Then satisfy the scheduling requirement, the resource allocation success confirms to take the respective resources on all empty antennas $R_{{\mathrm{\λ}}_{A_n}}={R^{\′}}_{{\mathrm{\λ}}_{A_n}};$ Otherwise carry out next step;

(11) pass through $R_{L_{A_n}}=P_a^w-{R^{\′}}_{{\mathrm{\λ}}_{A_n}}$ Whether statistics also has remaining idling-resource, if $R_{L_{A_n}}==\mathrm{\φ}$ Then judge and do not satisfy schedulable condition, the resource allocation failure, otherwise carry out next step;

(12) judge CQI _ScheWhether be minimum CQI, if then judge and do not satisfy schedulable condition, the resource allocation failure; Otherwise reduce CQI, i.e. a CQI _Sche=CQI _Sche-1, CQI redistributes resource with this fresh target.

As can be seen, present embodiment is in the single codeword resource allocation process, mainly can satisfy two conditions of scheduling thresholding according to the data volume that the data volume scheduling is finished and dispatched and determine whether to take corresponding resource, thereby can be under the situation that guarantees Qos, guarantee user's fairness, make more user obtain dispatch service, and make the throughput of system maximization.

With reference to figure 4, show under the situation of many code sources, the flow chart of the resource allocation methods embodiment 3 of a kind of Single User MIMO of the present invention can may further comprise the steps:

Step 401, obtain the available resources of all empty antennas,, and choose target CQI according to the size ordering of the corresponding CQI of described resource;

Step 402, the resource units of searching described target CQI correspondence and empty aerial position, the described resource units of foundation and the data volume Resources allocation on described empty antenna that need dispatch.

Step 403, according to the frequency domain position at described resource units place, take the resource of corresponding frequency domain position on other empty antenna in advance;

The data volume that step 404, foundation have been dispatched is calculated the remaining data dispatching amount that needs;

Step 405, judge whether also have to need the data volume of scheduling, if then execution in step 406; If not, execution in step 408 then;

Step 406, judge whether to distribute the resource of all empty antennas; If then execution in step 407; If not, execution in step 410 then;

Step 407, judge that whether current data volume of having dispatched satisfies the scheduling thresholding, if then execution in step 408; If not, execution in step 409 then;

Step 408, determine to take the resource of corresponding frequency domain position on all empty antennas;

Step 409, if the data volume of having dispatched does not satisfy the scheduling thresholding, then when having surplus resources, redefine target CQI, to redistribute resource according to the described target CQI that redefines;

Step 410, if the resource of unallocated intact all empty antennas, the then resource of distributing corresponding frequency domain position on the empty antenna of next bar, and execution in step 404 is upgraded the data volume that needs scheduling.

Preferably, in the present embodiment, the described step that redefines target CQI can comprise following substep:

Substep A1: judge whether to exist a CQI who equates with current goal CQI, if then carry out substep A2; If not, then carry out substep A3;

Substep A2: redefining a described CQI is target CQI;

Substep A3: redefine less than current goal CQI and be target CQI greater than the 2nd CQI of other CQI.

The detailed process of carrying out the single codeword resource allocation with an application embodiment shown in Figure 4 is further described the present invention below.

Input:

The number of empty antenna: A _n

An empty antenna can be used for the resource collection of resource allocation:

Need to send the size of data buffer zone:

Output:

The result of the resource allocation of empty antenna:

The specific algorithm process can may further comprise the steps with reference to flow chart shown in Figure 5:

Step 501, judged whether resource can be used for the scheduling, if then execution in step 502; If not, then judge and do not satisfy the debugging condition, the resource allocation failure;

Step 502, the available resources of all antennas according to the ordering of the size of CQI;

Step 503, the resource units that obtains the CQI that has maximum in all antennas and the position of respective antenna, and obtain the data volume that needs scheduling, to prepare initial schedule;

The corresponding calculated process can realize by following specific algorithm:

(1) the CQI value of acquisition resource units is MCS _jThe available resource set of all empty antennas $P_a^w=\{{\mathrm{\λ}}_1,{\mathrm{\λ}}_2...,{\mathrm{\λ}}_h\},$ h∈k， $k=N\left({\mathrm{\λ}}_{\mathrm{DL}}^w\right),$ W={1,2 ..., A _n;

The CQI set of middle resource units correspondence $C_{{\mathrm{\λ}}_{\mathrm{DL}}^w}=\{C^1,C^2...,C^k\},$ $k=N\left({\mathrm{\λ}}_{\mathrm{DL}}^w\right),$ w＝{1，2…，A _n}；

(2) CQI that extracts each empty antenna maximum is: ${\mathrm{CQI}}_{\max }^w=\underset{l=\mathrm{1,2}...,k}{\arg \max }\left(C^l\right),$ $k=N\left({\mathrm{\λ}}_{\mathrm{DL}}^w\right),$ w＝{1，2…，A _n}；

(3) of the CQI set of the resource of each empty antenna according to correspondence $C_{{\mathrm{\λ}}_{\mathrm{DL}}^w}=\{C^1,C^2...,C^k\},$

According to CQI rank order from big to small, count on P _DL ^wSet in, be designated as $P_{\mathrm{DL}}^w=\{{\mathrm{\λ}}_{{\mathrm{MCS}}_j}^t,{\mathrm{\λ}}_{{\mathrm{MCS}}_j}^t...,{\mathrm{\λ}}_{{\mathrm{MCS}}_j}^t\},$ t∈k，w＝{1，2…，A _n}；

(4) from $C_{{\mathrm{\λ}}_{\mathrm{DL}}^w}=\{C^1,C^2...,C^k\},$ $k=N\left({\mathrm{\λ}}_{\mathrm{DL}}^w\right),$ W={1,2 ..., A _nIn get access on each empty antenna maximum CQI and be designated as: ${\mathrm{CQI}}_{\max }^w=\underset{l=\mathrm{1,2}...,k}{\arg \max }\left(C^l\right),$ w＝{1，2…，A _n}；

(5) from CQI _Max ^wIn obtain in all empty antennas maximum CQI and be: ${\mathrm{CQI}}_{\max }=\underset{s=\mathrm{1,2}...,w}{\arg \max }\left({\mathrm{CQI}}_{\max }^s\right);$

(6) determine that the regulation goal CQI that this scheduling is used is: ${\mathrm{CQI}}_{\mathrm{sche}}={\mathrm{CQI}}_{\max }^w;$

(7) from $P_{\mathrm{DL}}^w=\{{\mathrm{\λ}}_{{\mathrm{MCS}}_j}^t,{\mathrm{\λ}}_{{\mathrm{MCS}}_j}^t...,{\mathrm{\λ}}_{{\mathrm{MCS}}_j}^t\},$ Search each empty antenna among the t ∈ k and have CQI _ScheResource (8) from $R_p^w=N\left(P_{\mathrm{DL}}^w\right),$ W={1,2 ..., A _nIn the statistics each empty antenna have CQI _ScheThe resource number, be designated as $S_{\max }^x=\arg \max \left(R_p^w\right),$ w＝{1，2…，A _n}，x∈{A _n}。

Step 504, according to the resource units of target CQI, this CQI correspondence and antenna with need the data volume Resources allocation of scheduling;

(8) promptly exist $S_{\max }^x=\arg \max \left(R_p^w\right),$ W={1,2 ..., A _n, x ∈ { A _nIn, find an operable resource units RU _g ^w, g ∈ k, w={1,2 ..., A _n, carry out resource allocation in the empty aerial position that x write down, and record in advance and take in the resource collection

Step 505, the resource location that takies according to this scheduling take the resource of other empty antenna of respective resources position in advance;

The described resource that takies in advance wouldn't offer other users and use.

The data volume that step 506, foundation have been dispatched is upgraded the remaining data volume that needs scheduling;

Step 507, judgement need whether the data volume of scheduling is 0, if then execution in step 508; Otherwise, execution in step 509;

Step 508, take the resource on all empty antennas of respective resources position according to scheduling result;

Step 509, judge whether to distribute the resource of all empty antennas of described resource location, if then execution in step 510; If not, execution in step 511 then;

Whether the data volume that step 510, judgement have been dispatched satisfies the scheduling thresholding, if then execution in step 508; Otherwise execution in step 512;

Step 511, on the empty antenna of next bar, distribute the resource of described resource location, and return step 506;

Step 512, judge whether to also have remaining idling-resource, if having, then execution in step 513; If no, then return the result of resource allocation failure, discharge the described resource that takies in advance, promptly do not take corresponding resource.

In practice, the result who fails for described resource allocation can different types of service handle, and the present invention does not need this to limit.

Step 513, judge whether to find the resource that equals current goal CQI, if then directly return step 504, to redistribute resource according to this fresh target CQI; If not, execution in step 514 then;

Step 514, current goal CQI is reduced a CQI, return step 504, promptly redistribute resource according to this fresh target CQI.

Above-mentioned steps 505-step 512 can realize by following specific algorithm:

(9) according to the data volume of this scheduling

Calculate remaining data volume ${\mathrm{BO}}_{L_i}={\mathrm{BO}}_{R_i}-{\mathrm{BO}}_{S_i},$ If ${\mathrm{BO}}_{R_i}==\mathrm{\φ}$ Then resource allocation is finished, and confirms to take the respective resources on all empty antennas $R_{{\mathrm{\λ}}_{A_n}}={R^{\′}}_{{\mathrm{\λ}}_{A_n}},$ Otherwise carry out next step;

(10) for each empty antenna, all the resource RU that takies according to current scheduling _g ^w, g ∈ k, w={1,2 ..., A _nThe frequency domain position g at place dispatches the resource RU of the next empty antenna that distributes corresponding frequency domain position _g ^w, g ∈ k, w={1,2 ..., A _n, all distribute up to resource allocation success or all empty antennas to finish;

(11) default scheduling thresholding Q _LinitIf reach the scheduling thresholding ${\mathrm{BO}}_{S_i}==Q_{\mathrm{linit}},$ Then satisfy the scheduling requirement, the resource allocation success confirms to take the respective resources on all empty antennas $R_{{\mathrm{\λ}}_{A_n}}={R^{\′}}_{{\mathrm{\λ}}_{A_n}};$ Otherwise carry out next step;

(12) pass through $R_{L_{A_n}}=P_a^w-{R^{\′}}_{{\mathrm{\λ}}_{A_n}}$ Whether statistics also has remaining idling-resource, if $R_{L_{A_n}}==\mathrm{\φ}$ Then judge and do not satisfy schedulable condition, the resource allocation failure, otherwise carry out next step;

(13) from $C_{{\mathrm{\λ}}_{\mathrm{DL}}^w}=\{C^1,C^2...,C^k\},$ $k=N\left({\mathrm{\λ}}_{\mathrm{DL}}^w\right),$ W={1,2 ..., A _n; Look for C in the set ^r==CQI _Sche, the resource of r ∈ k is if find then according to this C ^rRedistribute resource; Otherwise, from $C_{{\mathrm{\λ}}_{\mathrm{DL}}^w}=\{C^1,C^2...,C^k\},$ $k=N\left({\mathrm{\λ}}_{\mathrm{DL}}^w\right),$ W={1,2 ..., A _nLook for less than CQI in the set _ScheAnd CQI greater than other CQI _Temp, for example, reduce CQI value, i.e. a CQI _Sche=CQI _Sche-1 if having, and then makes CQI _Sche=CQI _Temp, with according to this CQI _TempRedistribute resource.

As can be seen, the thread that the application embodiment of the invention is carried out many code sources distribution is a resource units, resource location with this resource units place calculates data carried by data amount on other empty antenna, ask the remaining data amount, progressively increase resource units, the condition finished as scheduling of Tiao Du data volume and scheduling thresholding two basic parameters as required is till satisfying the scheduling of scheduling thresholding or data volume and finishing.Under the bad situation of channel quality, can reduce CQI and guarantee that Qos dispatches, both can satisfy the Qos requirement, service is provided can for again more business.

For aforesaid each method embodiment, for simple description, so it all is expressed as a series of combination of actions, but those skilled in the art should know, the present invention is not subjected to the restriction of described sequence of movement, because according to the present invention, some step can adopt other orders or carry out simultaneously.Secondly, those skilled in the art also should know, the embodiment described in the specification all belongs to preferred embodiment, and related action and module might not be that the present invention is necessary.

With reference to figure 6, show the structured flowchart of the resource allocation system embodiment 1 of a kind of Single User MIMO of the present invention, can comprise with lower module:

Resource distribution module 601 is used to obtain the resource information of target CQI, the data volume Resources allocation of scheduling as required on corresponding empty antenna;

Take module 602 in advance, be used for taking respective resources on other empty antenna in advance according to described resource allocation result;

Pass judgment on module 603, be used to judge taking in advance of resource on the described empty antenna whether satisfy pre-conditioned, if then determine to take the respective resources on the described empty antenna.

With reference to figure 7, show under the situation of single codeword resource, the flow chart of the resource allocation system embodiment 2 of a kind of Single User MIMO of the present invention can comprise with lower module:

Resource distribution module 701 is used to obtain the resource information of target CQI, the data volume Resources allocation of scheduling as required on corresponding empty antenna;

Preferably, described resource distribution module can comprise following submodule:

Target CQI chooses submodule 7011, is used to obtain the available resources of all empty antennas, according to the size ordering of the corresponding CQI of described resource, and chooses target CQI;

Statistics submodule 7012 is used to add up the resource number that each empty antenna has described target CQI;

Locator module 7013 is used to locate the maximum empty aerial position of resource number that has described target CQI;

First distribution sub module 7014 is used for the data volume Resources allocation on described empty antenna according to described maximum resource numbers and needs scheduling.

Take module 702 in advance, be used for taking respective resources on other empty antenna in advance according to described resource allocation result;

Pass judgment on module 703, be used to judge taking in advance of resource on the described empty antenna whether satisfy pre-conditioned, if then determine to take the respective resources on the described empty antenna.

Preferably, described judge module can comprise following submodule:

First judges submodule 7031, is used to judge whether the data volume of needs scheduling in addition, if having, then triggers second and judges submodule 7032; If do not have, then trigger first and take submodule 7033;

Second judges submodule 7032, is used to judge whether the data volume of having dispatched satisfies the scheduling thresholding, if then trigger first and take submodule 7033;

First takies submodule 7033, is used to determine to take the respective resources on the described empty antenna.

More preferred, described judge module can also comprise:

Target CQI updating submodule 7034 is used for not satisfying the scheduling thresholding in described data volume of having dispatched, and exists under the condition of surplus resources, redefines target CQI.

Wherein, the described target CQI that redefines can be for less than current goal CQI and greater than the CQI of other CQI.

With reference to figure 8, show under the situation of many code sources, the structured flowchart of the resource allocation system embodiment 3 of a kind of Single User MIMO of the present invention can comprise with lower module:

Resource distribution module 801 is used to obtain the resource information of target CQI, the data volume Resources allocation of scheduling as required on corresponding empty antenna;

Preferably, described resource distribution module can comprise following submodule:

Target CQI chooses submodule 8011, is used to obtain the available resources of all empty antennas, according to the size ordering of the corresponding CQI of described resource, and chooses target CQI;

Search submodule 8012, be used to search the resource units and the empty aerial position of described target CQI correspondence;

Second distribution sub module 8013 is used for the data volume Resources allocation on described empty antenna according to described resource units and needs scheduling.

Take module 802 in advance, be used for taking respective resources on other empty antenna in advance according to described resource allocation result;

Preferably, the described module that takies in advance can comprise following submodule:

Frequency domain resource takies submodule 8021 in advance: according to the frequency domain position at described resource units place, take the resource of corresponding frequency domain position on other empty antenna in advance.

Pass judgment on module 803, be used to judge taking in advance of resource on the described empty antenna whether satisfy pre-conditioned, if then determine to take the respective resources on the described empty antenna.

Preferably, described judge module can comprise following submodule:

Data volume updating submodule 8031 is used for calculating the remaining data dispatching amount that needs according to the data volume of having dispatched;

First judges submodule 8032, is used to judge whether the data volume of needs scheduling in addition, if having, then triggers the 3rd and judges submodule 8033; If do not have, then trigger second and take submodule 8034;

The 3rd judges submodule 8033, is used to judge whether to distribute the resource of all empty antennas; If then trigger second and judge submodule 8035; If not, then trigger cycle assignment submodule 8036;

Second judges submodule 8035, is used to judge whether the data volume of having dispatched satisfies the scheduling thresholding, if then trigger second and take submodule 8034;

Cycle assignment submodule 8036 is used for distributing the resource of corresponding frequency domain position on the empty antenna of next bar, and calls the data volume that described data volume updating submodule is upgraded needs scheduling;

Second takies submodule 8034, is used to determine to take the resource of corresponding frequency domain position on all empty antennas.

More preferred, described judge module can also comprise:

Target CQI updating submodule 8037 is used for not satisfying the scheduling thresholding in described data volume of having dispatched, and exists and have under the condition of surplus resources, redefines target CQI.

Described target CQI updating submodule can also comprise with lower unit:

The one CQI selectes the unit, is used for when existing with a CQI that current goal CQI equates, and selecting a described CQI is target CQI;

The 2nd CQI selectes the unit, is used for not with a CQI that current goal CQI equates the time, selectes less than current goal CQI and is target CQI greater than the 2nd CQI of other CQI.

Because the system embodiment shown in Fig. 6,7 and 8 can correspondence be applicable among the aforesaid the whole bag of tricks embodiment that so description is comparatively simple, not detailed part can be referring to the description of this specification front appropriate section.Above-mentionedly arbitrarily enumerated several embodiment of the present invention, those skilled in the art are appropriate combination, selection as the case may be, can bring into play technology effect of the present invention fully.Combination in any based on the foregoing description all is embodiment of the present invention, but this specification has not just described in detail one by one at this as space is limited.

At last, also need to prove, in this article, relational terms such as first and second grades only is used for an entity or operation are made a distinction with another entity or operation, and not necessarily requires or hint and have the relation of any this reality or in proper order between these entities or the operation.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thereby make and comprise that process, method, article or the equipment of a series of key elements not only comprise those key elements, but also comprise other key elements of clearly not listing, or also be included as this process, method, article or equipment intrinsic key element.Do not having under the situation of more restrictions, the key element that limits by statement " comprising ... ", and be not precluded within process, method, article or the equipment that comprises described key element and also have other identical element.

More than the resource allocation methods of a kind of Single User MIMO provided by the present invention and a kind of resource allocation system of Single User MIMO are described in detail, used specific case 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 (21)

1, a kind of resource allocation methods of Single User MIMO is characterized in that, comprising:

Obtain the resource information of target CQI, the data volume Resources allocation of on corresponding empty antenna, dispatching as required;

Take respective resources on other empty antenna in advance according to described resource allocation result;

Judge taking in advance of resource on the described empty antenna whether satisfy pre-conditioned, if then determine to take the respective resources on the described empty antenna.

2, the method for claim 1 is characterized in that, described resource is the single codeword resource, and the described allocation step of obtaining comprises:

Obtain the available resources of all empty antennas,, and choose target CQI according to the size ordering of the corresponding CQI of described resource;

Add up each empty antenna and have the resource number of described target CQI;

The location has the maximum empty aerial position of resource number of described target CQI, the described maximum resource numbers of foundation and the data volume Resources allocation on described empty antenna that need dispatch.

3, method as claimed in claim 2 is characterized in that, described condition judgment step comprises:

Judge whether to also have the data volume that needs scheduling, if having, whether the data volume that then further judgement has been dispatched satisfies the scheduling thresholding, if then determine to take the respective resources on the described empty antenna;

If do not need the data volume of dispatching, then directly determine to take the respective resources on the described empty antenna.

4, method as claimed in claim 3 is characterized in that, described condition judgment step also comprises:

If described data volume of having dispatched does not satisfy the scheduling thresholding, then exist under the condition of surplus resources, redefine target CQI, to redistribute resource according to the described target CQI that redefines.

5, method as claimed in claim 4 is characterized in that, the described target CQI that redefines is for less than current goal CQI and greater than the CQI of other CQI.

6, the method for claim 1 is characterized in that, described resource is many code sources, and the described allocation step of obtaining comprises:

Obtain the available resources of all empty antennas,, and choose target CQI according to the size ordering of the corresponding CQI of described resource;

Search the resource units and the empty aerial position of described target CQI correspondence, the described resource units of foundation and the data volume Resources allocation on described empty antenna that need dispatch.

7, method as claimed in claim 6 is characterized in that, the described step that takies in advance comprises:

According to the frequency domain position at described resource units place, take the resource of corresponding frequency domain position on other empty antenna in advance.

8, method as claimed in claim 7 is characterized in that, described condition judgment step comprises:

Calculate the remaining data dispatching amount that needs according to the data volume of having dispatched;

If also have the data volume that needs scheduling, then judge whether to distribute the resource of all empty antennas;

If, then satisfy under the condition of scheduling thresholding in the data volume of having dispatched, determine to take the resource of corresponding frequency domain position on all empty antennas;

If not, the data volume that the then resource of distributing corresponding frequency domain position on the empty antenna of next bar, and renewal need be dispatched.

9, method as claimed in claim 8 is characterized in that, described condition judgment step also comprises:

As if the data volume that does not need to dispatch, then directly determine to take the resource of corresponding frequency domain position on all empty antennas.

10, method as claimed in claim 9 is characterized in that, described condition judgment step also comprises:

If described data volume of having dispatched does not satisfy the scheduling thresholding, then when having surplus resources, redefine target CQI, to redistribute resource according to the described target CQI that redefines.

11, method as claimed in claim 10 is characterized in that, the described step that redefines target CQI comprises:

Judge whether to exist a CQI who equates with current goal CQI, if then redefining a described CQI is target CQI; If not, the 2nd CQI that then redefines less than current goal CQI is target CQI.

12, a kind of resource allocation system of Single User MIMO is characterized in that, comprising:

Resource distribution module is used to obtain the resource information of target CQI, the data volume Resources allocation of scheduling as required on corresponding empty antenna;

Take module in advance, be used for taking respective resources on other empty antenna in advance according to described resource allocation result;

Pass judgment on module, be used to judge taking in advance of resource on the described empty antenna whether satisfy pre-conditioned, if then determine to take the respective resources on the described empty antenna.

13, system as claimed in claim 12 is characterized in that, described resource is the single codeword resource, and described resource distribution module comprises:

Target CQI chooses submodule, is used to obtain the available resources of all empty antennas, according to the size ordering of the corresponding CQI of described resource, and chooses target CQI;

The statistics submodule is used to add up the resource number that each empty antenna has described target CQI;

The locator module is used to locate the maximum empty aerial position of resource number that has described target CQI;

First distribution sub module is used for the data volume Resources allocation on described empty antenna according to described maximum resource numbers and needs scheduling.

14, system as claimed in claim 13 is characterized in that, described judge module comprises:

First judges submodule, is used to judge whether the data volume of needs scheduling in addition, if having, then triggers second and judges submodule; If do not have, then trigger first and take submodule;

Second judges submodule, is used to judge whether the data volume of having dispatched satisfies the scheduling thresholding, if then trigger first and take submodule;

First takies submodule, is used to determine to take the respective resources on the described empty antenna.

15, system as claimed in claim 14 is characterized in that, described judge module also comprises:

Target CQI updating submodule is used for not satisfying the scheduling thresholding in described data volume of having dispatched, and exists under the condition of surplus resources, redefines target CQI.

16, system as claimed in claim 15 is characterized in that, the described target CQI that redefines is for less than current goal CQI and greater than the CQI of other CQI.

17, system as claimed in claim 16 is characterized in that, described resource is many code sources, and described resource distribution module comprises:

Target CQI chooses submodule, is used to obtain the available resources of all empty antennas, according to the size ordering of the corresponding CQI of described resource, and chooses target CQI;

Search submodule, be used to search the resource units and the empty aerial position of described target CQI correspondence;

Second distribution sub module is used for the data volume Resources allocation on described empty antenna according to described resource units and needs scheduling.

18, system as claimed in claim 17 is characterized in that, the described module that takies in advance comprises:

Frequency domain resource takies submodule in advance: according to the frequency domain position at described resource units place, take the resource of corresponding frequency domain position on other empty antenna in advance.

19, system as claimed in claim 18 is characterized in that, described judge module comprises:

The data volume updating submodule is used for calculating the remaining data dispatching amount that needs according to the data volume of having dispatched;

First judges submodule, is used to judge whether the data volume of needs scheduling in addition, if having, then triggers the 3rd and judges submodule; If do not have, then trigger second and take submodule;

The 3rd judges submodule, is used to judge whether to distribute the resource of all empty antennas; If then trigger second and judge submodule; If not, then trigger the cycle assignment submodule;

Second judges submodule, is used to judge whether the data volume of having dispatched satisfies the scheduling thresholding, if then trigger second and take submodule;

The cycle assignment submodule is used for distributing the resource of corresponding frequency domain position on the empty antenna of next bar, and calls the data volume that described data volume updating submodule is upgraded needs scheduling;

Second takies submodule, is used to determine to take the resource of corresponding frequency domain position on all empty antennas.

20, system as claimed in claim 19 is characterized in that, described judge module also comprises:

Target CQI updating submodule is used for not satisfying the scheduling thresholding in described data volume of having dispatched, and exists and have under the condition of surplus resources, redefines target CQI.

21, system as claimed in claim 20 is characterized in that, described target CQI updating submodule comprises:

The one CQI selectes the unit, is used for when existing with a CQI that current goal CQI equates, and selecting a described CQI is target CQI;

The 2nd CQI selectes the unit, is used for not with a CQI that current goal CQI equates the time, selectes less than current goal CQI and is target CQI greater than the 2nd CQI of other CQI.

Images