CN101998640B - Resource allocation method and base station - Google Patents

Abstract

The invention discloses a resource allocation method and a base station. The method comprises the following steps: the base station determines the quantity of resource blocks distributed for a plurality of terminals according to first information of each terminal in the plurality of terminals when the plurality of terminals are scheduled, wherein a plurality of resource preallocation modes are correspondingly formed after the quantity of the plurality of terminals is determined; the base station determines one resource preallocation mode from the plurality of resource preallocation modes according to second information of each terminal; and the base station allocates resources for each terminal according to the determined resource preallocation mode. The invention enhances the average throughput of cells, achieves the aim of improving the frequency spectrum efficiency, simultaneously considers the scheduling fairness and has simpler calculation ratio.

Description

Resource allocation methods and base station

Technical field

The present invention relates to the communications field, in particular to a kind of resource allocation methods and base station.

Background technology

In field of wireless communication, limited resource (time, frequency etc.) and the user's request increased without limitation are the contradiction existed all the time.Under limited time and limited bandwidth, how to transmit data as much as possible, improve message transmission rate, improving spectrum efficiency, is a problem being worth studying for a long period of time.

In recent years, in a broadband wireless communication system, OFDM (Orthogonal Frequency Division Multiple Access, referred to as OFDMA) technology is concerned and applies.OFDMA is OFDM (the Orthogonal Frequenc being arranged with subcarrier mutually orthogonal on the frequency axis _ydivision Multiplexing, referred to as OFDM) based on multidimensional access technology, the section bundling multiple subcarrier is set to resource units, and base station is for the different section of each terminal distribution.In order to improve the efficiency of frequency employment of the wireless communication system employing OFDMA, the communication quality of each section in each terminal being compared, and is effective to the way of each section of the second best in quality terminal distribution.Communication quality is time dependent in a wireless communication system, so when downlink communication is set to object, each terminal at regular intervals interval just measures communication quality, and feeds back to base station.Technology for each terminal dynamically the second best in quality frequency band of allocate communications is called as frequency scheduling technology and is widely studied.

A kind of resource allocation methods is proposed in correlation technique, the method comprises: the communication quality of M resource section of a base station notification terminal feedback communication number of times high (rival is few), according to feeding back to the frequency resource section that the high and message capacity of terminal distribution number of communications is average and dispersion is high.The method can improve community average throughput, meanwhile, has taken into account the fairness of terminal.But calculating more complicated.

Summary of the invention

The object of the present invention is to provide a kind of Resource Allocation Formula, utilize wireless channel in the frequency selectivity feature of frequency domain, distribute the good frequency range of frequency response corresponding to it to different terminals as far as possible, reach the object promoting community average throughput, improve the availability of frequency spectrum, take into account the less terminal of Resources allocation simultaneously and can have better resource, reach the fairness of scheduling.The method calculates simple, easy to understand and realization.

To achieve these goals, according to an aspect of the present invention, a kind of resource allocation methods is provided.

Resource allocation methods according to the present invention comprises: when multiple terminal is scheduled, base station is according to the first information of each terminal in multiple terminal, be defined as multiple terminal distribution number of resource blocks, after the number of resource blocks of multiple terminal is determined, to there being multiple resources preassignment mode; Base station determines a kind of pre-allocation of resources mode according to the second information of each terminal from multiple resources preassignment mode; Base station is each terminal distribution resource according to a kind of pre-allocation of resources mode determined.

Preferably, the first information at least comprises one of following: the length of the transmitted bit number of Signal Interference and Noise Ratio, equivalence, data sequence that each terminal is to be transmitted in buffering area.

Preferably, when the first information is Signal Interference and Noise Ratio, base station is multiple terminal determination number of resource blocks according to following formula: wherein, N represents the number of multiple terminal, num _jrepresent the number of resource blocks of a jth terminal distribution, represent the broadband signal interference-to-noise ratio SINR value of a jth terminal distribution, ceil () expression rounds up, Num _totalrepresent total assignable number of resource blocks.

Preferably, after the number of resource blocks of multiple terminal is determined, said method also comprises: according to the channel response of multiple terminal on frequency domain, to there being multiple resources preassignment mode.

Preferably, when the second information is subband signal interference-to-noise ratio, base station determines that from multiple resources preassignment mode a kind of pre-allocation of resources mode comprises: base station is according to the weights γ of often kind of pre-allocation of resources mode in following formulae discovery multiple resources preassignment mode _k: ${\mathrm{\γ}}_k=\underset{j=1}{\overset{N}{\mathrm{\Σ}}}\frac{\mathrm{mean}\left({\mathrm{SINR}}_j\right[{\mathrm{RB}}_{\mathrm{start}}^j...{\mathrm{RB}}_{\mathrm{end}}^j)}{{\mathrm{num}}_j}=\underset{j=1}{\overset{N}{\mathrm{\Σ}}}\left(\frac{1}{{\mathrm{num}}_j^2}\underset{i={\mathrm{RB}}_{\mathrm{start}}^j}{\overset{{\mathrm{RB}}_{\mathrm{end}}^j}{\mathrm{\Σ}}}{\mathrm{SINR}}_i^j\right),$ K=1 ..., N! , wherein, the number of N many terminals, k is combination sequence number, Individual combination, num _jrepresent the number of resource blocks of a jth terminal distribution, RB represents Resource Block, and mean represents computing of averaging, represent the SINR value in the Resource Block section that a jth terminal is distributed when kth combines, represent the starting and ending sequence number of the Resource Block of a jth terminal distribution respectively; Base station is determined to adopt γ _kbeing worth maximum pre-allocation of resources mode is each terminal distribution resource.

Preferably, multiple terminal is scheduled and comprises: multiple terminal is dispatched according to dispatching criterion in base station, and wherein, dispatching criterion at least comprises one of following: the record of maximum appointed information speed, time wheel are named, equitable proportion.

To achieve these goals, according to a further aspect in the invention, a kind of base station is provided.

Base station according to the present invention comprises: the first determination module, for when multiple terminal is scheduled, according to the first information of each terminal in multiple terminal, be defined as the number of resource blocks of multiple terminal distribution, after the number of resource blocks of multiple terminal is determined, to there being multiple resources preassignment mode; Second determination module, determines a kind of pre-allocation of resources mode for the second information according to each terminal from multiple resources preassignment mode; Distribution module, for being each terminal distribution resource according to a kind of pre-allocation of resources mode determined.

Preferably, the first determination module is specifically for determining the number of resource blocks of multiple terminal according to following formula: wherein, N represents the number of multiple terminal, num _jrepresent the number of resource blocks of a jth terminal distribution, represent the broadband signal interference-to-noise ratio SINR value of a jth terminal distribution, ceil () expression rounds up, Num _totalrepresent total assignable number of resource blocks.

Preferably, the second determination module specifically for determining a kind of pre-allocation of resources mode according to following formula when the second information is subband signal interference-to-noise ratio from multiple resources preassignment mode:

${\mathrm{\γ}}_k=\underset{j=1}{\overset{N}{\mathrm{\Σ}}}\frac{\mathrm{mean}\left({\mathrm{SINR}}_j\right[{\mathrm{RB}}_{\mathrm{start}}^j...{\mathrm{RB}}_{\mathrm{end}}^j)}{{\mathrm{num}}_j}=\underset{j=1}{\overset{N}{\mathrm{\Σ}}}\left(\frac{1}{{\mathrm{num}}_j^2}\underset{i={\mathrm{RB}}_{\mathrm{start}}^j}{\overset{{\mathrm{RB}}_{\mathrm{end}}^j}{\mathrm{\Σ}}}{\mathrm{SINR}}_i^j\right),$ K=1 ..., N! , wherein, the number of N many terminals, k is combination sequence number, Individual combination, num _jrepresent the number of resource blocks of a jth terminal distribution, RB represents Resource Block, and mean represents computing of averaging, represent the SINR value in the Resource Block section that a jth terminal is distributed when kth combines, represent the starting and ending sequence number of the Resource Block of a jth terminal distribution respectively.

Preferably, the second determination module is determined to adopt γ _kbeing worth maximum pre-allocation of resources mode is each terminal distribution resource.

Pass through the present invention, base station is according to the frequency selectivity feature of terminal at frequency domain, a kind of pre-allocation of resources mode of the best is determined from multiple resources preassignment mode, for multiple terminal distribution resource, reach and promote community average throughput, improve the object of spectrum efficiency, take into account the fairness of scheduling simultaneously, and calculate fairly simple.

Accompanying drawing explanation

Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:

Fig. 1 is the flow chart of the method for processing resource according to the embodiment of the present invention;

Fig. 2 is the structured flowchart of the base station according to the embodiment of the present invention;

Fig. 3 is the structured flowchart concrete according to the base station of the embodiment of the present invention.

Embodiment

Functional overview

Embodiments provide a kind of Resource Allocation Formula based on frequency selectivity, the treatment principle of the program is as follows: when multiple terminal is scheduled, and the number of resource blocks of multiple terminal, according to the first information of each terminal in multiple terminal, is determined in base station; After the number of resource blocks of terminal is determined, according to the channel response of terminal at frequency domain, to there being multiple resources preassignment mode; Base station determines a kind of pre-allocation of resources mode according to the second information of each terminal from multiple resources preassignment mode; Base station is each terminal distribution resource according to a kind of pre-allocation of resources mode determined.

It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.

In the examples below, can perform in the computer system of such as one group of computer executable instructions in the step shown in the flow chart of accompanying drawing, and, although show logical order in flow charts, but in some cases, can be different from the step shown or described by order execution herein.

Embodiment of the method

According to embodiments of the invention, provide a kind of resource allocation methods, Fig. 1 is the flow chart of the method for processing resource according to the embodiment of the present invention; As shown in Figure 1, the method comprises following step S102 to step S106:

Step S102, when multiple terminal is scheduled, base station, according to the first information of each terminal in multiple terminal, is defined as the number of resource blocks of multiple terminal distribution, after number of resource blocks is determined, to there being multiple resources preassignment mode.That is, after being defined as the number of resource blocks of terminal distribution, can to there being multiple resources preassignment mode.

Step S104, base station determines a kind of pre-allocation of resources mode according to the second information of each terminal from multiple resources preassignment mode.

Step S106, base station is each terminal distribution resource according to a kind of pre-allocation of resources mode determined.

Preferably, the first information can be: Signal Interference and Noise Ratio (Signal to Interference plus Noise Ratio, referred to as SINR), the transmitted bit number of equivalence, the length of data sequence that each terminal is to be transmitted in buffering area.

At above-mentioned steps S102, when the first information is Signal Interference and Noise Ratio, base station is the number of resource blocks determining multiple terminal according to following formula, namely, according to the broadband signal interference-to-noise ratio of each terminal that is scheduled, for each terminal is pre-assigned to different number of resource blocks, the terminal that wideband SINR value is higher in principle, preallocated number of resource blocks is more.

${\mathrm{num}}_j=\mathrm{ceil}\left(\frac{{\mathrm{SINR}}_{\mathrm{wide}}^j}{\underset{j=1}{\overset{N}{\mathrm{\Σ}}}{\mathrm{SINR}}_{\mathrm{wide}}^j}\right)*{\mathrm{Num}}_{\mathrm{total}}$ (formula one), wherein,

N represents the number of multiple terminal,

Num _jrepresent the number of resource blocks of a jth terminal distribution,

represent the broadband signal interference-to-noise ratio SINR value of a jth terminal distribution,

Ceil () expression rounds up,

Num _totalrepresent total assignable number of resource blocks.

Base station according to (or, alternate manner Resources allocation block number) after formula pre-allocation resource block number above, if _nfor the current number of terminals be scheduled, then the method for salary distribution of Resource Block have N! (factorial) is individual, and then, base station utilizes the subband SINR value (that is, the second information) of the terminal that is respectively scheduled, and designs the quality that an index is used for weighing each method of salary distribution, uses weights γ in the present embodiment _kweigh, and the preassignment mode that selection one is best from multiple preassignment mode, γ in the present embodiment _kbe the best to the maximum.It should be noted that, only two be described for example with the formula below, but be not limited to the account form of formula two, other computational methods can also be adopted to determine the best method of salary distribution, and the second information also can adopt other index to weigh.

Base station is according to the weights γ of often kind of pre-allocation of resources mode in following formulae discovery multiple resources preassignment mode _k:

${\mathrm{\γ}}_k=\underset{j=1}{\overset{N}{\mathrm{\Σ}}}\frac{\mathrm{mean}\left({\mathrm{SINR}}_j\right[{\mathrm{RB}}_{\mathrm{start}}^j...{\mathrm{RB}}_{\mathrm{end}}^j)}{{\mathrm{num}}_j}=\underset{j=1}{\overset{N}{\mathrm{\Σ}}}\left(\frac{1}{{\mathrm{num}}_j^2}\underset{i={\mathrm{RB}}_{\mathrm{start}}^j}{\overset{{\mathrm{RB}}_{\mathrm{end}}^j}{\mathrm{\Σ}}}{\mathrm{SINR}}_i^j\right),$ K=1 ..., N! (formula two), wherein,

The number of N many terminals,

K is combination sequence number, total N! Individual combination,

Num _jrepresent the number of resource blocks of a jth terminal distribution,

RB represents Resource Block,

Mean represents computing of averaging,

represent the SINR value in the Resource Block section that a jth terminal is distributed when kth combines, represent the starting and ending sequence number of the Resource Block of a jth terminal distribution respectively;

Base station is determined to adopt γ _kbeing worth maximum pre-allocation of resources mode is each terminal distribution resource.

Preferably, before step S102, multiple terminal is dispatched according to dispatching criterion in base station, and wherein, dispatching criterion at least comprises one of following: maximum appointed information speed record MCIR, time wheel are RR, equitable proportion PF.

Be described in detail below in conjunction with the implementation procedure of example to the embodiment of the present invention.

In the following example such as, according to the wideband SINR value of each terminal that is scheduled (or other index, the transmitted bit number of equivalence), distribute to the different number of resource blocks of each terminal (that is, resource); Travel through the assembled scheme of various resource block assignments, calculate the quality that Weighted Guidelines judges various combination, a final selection optimum distributing scheme.Need to illustrate, the distribution of Resource Block can have various ways, is not limited thereto and is described the distribution of Resource Block in the following example for SINR.The concrete steps of this resource allocation methods are as follows, are described respectively in following step in uplink and downlink two.

Step S201, descending, the SINR value of terminal measuring reference signals, reporting channel quality designator (Channel Quality Indicator, referred to as CQI), the instruction of this quality comprises the average CQI of the whole system bandwidth of broadband CQI() and based on the CQI value (CQI value on Resource Block) of subband; Up, the SINR value of the uplink reference signals that all terminals in base station measurement administrative area send, comprising: broadband average sinr value and the SINR value (SINR value on Resource Block) based on subband.

Step S202, descending, base station is according to the broadband CQI value of terminal to report, convert thereof into corresponding wideband SINR value (or, other index), adopt certain dispatching algorithm (such as, MCIR, RR, PF), calculate the dispatching priority of all terminals in administrative area; Up, base station adopts certain dispatching algorithm, utilizes the wideband SINR value measured to calculate the dispatching priority of all terminals in administrative area.

Step S203, upstream or downstream: base station is terminal distribution Resource Block according to priority, if there is the terminal of re-transmission to be scheduled, then total number of resource blocks deducts the number of resource blocks required for the terminal of re-transmission, and remaining number of resource blocks is assignable number of resource blocks.

Step S204, upstream or downstream: base station is according to the sequential scheduling terminal (not comprising the terminal carrying out retransmitting) of priority, and be terminal distribution number of resource blocks, the terminal that priority is higher is more first assigned to number of resource blocks, the number of resource blocks that terminal distribution obtains is calculated by following formula (that is, formula one).

${\mathrm{num}}_j=\mathrm{ceil}\left(\frac{{\mathrm{SINR}}_{\mathrm{wide}}^j}{\underset{j=1}{\overset{N}{\mathrm{\Σ}}}{\mathrm{SINR}}_{\mathrm{wide}}^j}\right)*{\mathrm{Num}}_{\mathrm{total}}$

Base station is terminal distribution number of resource blocks continuously, until number of resource blocks shared by the terminal of the number of resource blocks dispensed and re-transmission and reach the total number of resource blocks of system, just no longer continues to distribute.

Step S205, upstream or downstream: current all terminals obtaining number of resource blocks, comprise the terminal that needs retransmit, participate in the distribution of Resource Block together.

Step S206, upstream or downstream: set N as the current number of terminals (comprising the terminal that needs retransmit) obtaining number of resource blocks, the allocative decision of Resource Block have N! Individual assembled scheme, base station travel through this N! Individual assembled scheme, calculates the index that following formula (that is, formula two) defines, selects the assembled scheme that maximum index is corresponding, as the allocative decision of the best.

${\mathrm{\γ}}_k=\underset{j=1}{\overset{N}{\mathrm{\Σ}}}\frac{\mathrm{mean}\left({\mathrm{SINR}}_j\right[{\mathrm{RB}}_{\mathrm{start}}^j...{\mathrm{RB}}_{\mathrm{end}}^j)}{{\mathrm{num}}_j}=\underset{j=1}{\overset{N}{\mathrm{\Σ}}}\left(\frac{1}{{\mathrm{num}}_j^2}\underset{i={\mathrm{RB}}_{\mathrm{start}}^j}{\overset{{\mathrm{RB}}_{\mathrm{end}}^j}{\mathrm{\Σ}}}{\mathrm{SINR}}_i^j\right),$ k=1，…，N！

Respectively aforesaid way is described from descending and up two aspects below.

Example one, descending

Long Term Evolution (Long-Term Evolution, referred to as LTE) certain community A of system, system bandwidth 10MHz, be divided into 50 Resource Block (Resource Block, referred to as RB), multiple terminal accesses, medium education (the Media Access Control of base station, referred to as MAC) layer dispatches these terminals, and Resources allocation, this process comprises the steps:

Step S301, the SINR value of all terminal measuring reference signals in the A of community, reports signal quality to indicate (CQI), comprises the average CQI of broadband CQI(whole 10MHz bandwidth) and based on the CQI value (CQI value on Resource Block) of subband.The CQI value of subband reports granularity to be configured by high-level signaling, and such as, multiple Resource Block forms a Resource Block group, and the CQI reported is then based on these Resource Block groups.

Step S302, base station, according to the broadband CQI value of terminal to report, converts thereof into corresponding wideband SINR value (or other index, the transmitted bit number etc. of such as equivalence), adopts certain dispatching algorithm, the dispatching priority of all terminals in calculation plot A.

Step S303, base station calculates assignable number of resource blocks, if there is the terminal of re-transmission to be scheduled, then total number of resource blocks deducts the number of resource blocks required for the terminal of re-transmission, remaining number of resource blocks is assignable number of resource blocks, distributes for the terminal for new biography.

Step S304, base station is according to the order of priority, be followed successively by terminal distribution number of resource blocks (not comprising the terminal carrying out retransmitting), the terminal that priority is higher is more first assigned to number of resource blocks, the number of resource blocks that terminal distribution obtains can be calculated by formula 1, also can distribute according to other criterion, such as, corresponding to the length etc. of terminal in buffering area data to be transferred sequence, to be passed in buffering area according to terminal.

Base station is terminal distribution number of resource blocks continuously, until the number of resource blocks summation dispensed reaches assignable number of resource blocks, just no longer continues to distribute.

Step S305, the terminal obtaining number of resource blocks is the current terminal be scheduled, and the terminal be scheduled also comprises the terminal of the re-transmission be scheduled, and all terminals be scheduled participate in the distribution of Resource Block together.

Step S306, suppose that the current number of terminals be scheduled is 5, then the allocative decision of Resource Block has 5 unequal to 5*4*3*2*1=120 combination, base station travels through these 120 combinations, the index that computing formula 2 defines, select value maximum in these 120 indexs, the combination that this value is corresponding, as the allocative decision of the best.

Example two, up

Certain community A of LTE system, system bandwidth 5MHz, be divided into 25 Resource Block (being called for short RB), multiple terminal accesses, and the MAC layer of base station is dispatched these terminals, Resources allocation.

Step S401, the SINR value of the uplink reference signals (or business datum signal) of all terminal transmission in the A of base station measurement community, comprises wideband SINR value and the SINR value based on subband.

Step S402, base station, according to the wideband SINR value measured, adopts certain dispatching algorithm, the dispatching priority of all terminals in calculation plot A.

Step S403, base station calculates assignable number of resource blocks, if there is the terminal of re-transmission to be scheduled, then total number of resource blocks deducts the number of resource blocks required for the terminal of re-transmission, remaining number of resource blocks is assignable number of resource blocks, distributes for the terminal for new biography.

Step S404, base station is according to the order of priority, be followed successively by terminal distribution number of resource blocks (not comprising the terminal carrying out retransmitting), the terminal that priority is higher is more first assigned to number of resource blocks, the number of resource blocks that terminal distribution obtains can be calculated by formula 1, also can distribute according to other criterion, such as terminal is in the length etc. of buffering area data to be transferred sequence.

Base station is terminal distribution number of resource blocks continuously, until the number of resource blocks summation dispensed reaches assignable number of resource blocks, just no longer continues to distribute

Step S405, the terminal obtaining number of resource blocks is the current terminal be scheduled, and the terminal be scheduled also comprises the terminal of the re-transmission be scheduled, and all terminals be scheduled participate in the distribution of Resource Block together

Step S406, suppose that the current number of terminals be scheduled is 6, then the allocative decision of Resource Block has 6 unequal to 6*5*4*3*2*1=720 combination, base station travels through these 720 combinations, the index that computing formula 2 defines, select value maximum in these 720 indexs, the combination that this value is corresponding, as the allocative decision of the best.

Device embodiment

According to embodiments of the invention, provide a kind of base station, Fig. 2 is the structured flowchart of the base station according to the embodiment of the present invention, as shown in Figure 2, this base station comprises: the first determination module 22, second determination module 24, distribution module 26, be described in detail this structure below.

First determination module 22, for when multiple terminal is scheduled, according to the first information of each terminal in multiple terminal, be defined as the total number resource of multiple terminal distribution, and determine the multiple resources preassignment mode (such as, pre-allocation of resources mode 1 ..., pre-allocation of resources mode n) corresponding with total number resource; Second determination module 24 is connected to the first determination module 22, determines a kind of pre-allocation of resources mode for the second information according to each terminal from multiple resources preassignment mode; Distribution module 26 is connected to the second determination module 24, for being each terminal distribution resource according to a kind of pre-allocation of resources mode determined.

First determination module 22 is specifically for determining the number of resource blocks of multiple terminal according to following formula:

${\mathrm{num}}_j=\mathrm{ceil}\left(\frac{{\mathrm{SINR}}_{\mathrm{wide}}^j}{\underset{j=1}{\overset{N}{\mathrm{\Σ}}}{\mathrm{SINR}}_{\mathrm{wide}}^j}\right)*{\mathrm{Num}}_{\mathrm{total}}$ Wherein,

N represents the number of multiple terminal,

Num _jrepresent the number of resource blocks of a jth terminal distribution,

represent the broadband signal interference-to-noise ratio SINR value of a jth terminal distribution,

Ceil () expression rounds up,

Num _totalrepresent total assignable number of resource blocks.

Second determination module 24 specifically for determining a kind of pre-allocation of resources mode according to following formula when the second information is subband signal interference-to-noise ratio from multiple resources preassignment mode:

${\mathrm{\γ}}_k=\underset{j=1}{\overset{N}{\mathrm{\Σ}}}\frac{\mathrm{mean}\left({\mathrm{SINR}}_j\right[{\mathrm{RB}}_{\mathrm{start}}^j...{\mathrm{RB}}_{\mathrm{end}}^j)}{{\mathrm{num}}_j}=\underset{j=1}{\overset{N}{\mathrm{\Σ}}}\left(\frac{1}{{\mathrm{num}}_j^2}\underset{i={\mathrm{RB}}_{\mathrm{start}}^j}{\overset{{\mathrm{RB}}_{\mathrm{end}}^j}{\mathrm{\Σ}}}{\mathrm{SINR}}_i^j\right),$ K=1 ..., N! , wherein,

The number of N many terminals,

K is combination sequence number, total N! Individual combination,

Num _jrepresent the number of resource blocks of a jth terminal distribution,

RB represents Resource Block,

Mean represents computing of averaging,

represent the SINR value in the Resource Block section that a jth terminal is distributed when kth combines, represent the starting and ending sequence number of the Resource Block of a jth terminal distribution respectively.

Second determination module 24 is determined to adopt γ _kbeing worth maximum pre-allocation of resources mode is each terminal distribution resource.

Fig. 3 is the structured flowchart concrete according to the base station of the embodiment of the present invention, as shown in Figure 3, this base station also comprises: scheduler module 32, this module is used for dispatching multiple terminal according to dispatching criterion, wherein, dispatching criterion at least comprises one of following: the record of maximum appointed information speed, time wheel are named, equitable proportion.

In sum, pass through the above embodiment of the present invention, utilize wireless channel in the frequency selectivity feature of frequency domain, distribute the good frequency range of frequency response corresponding to it to different terminals as far as possible, reach the object promoting community average throughput, improve the availability of frequency spectrum, meanwhile, take into account the less terminal of Resources allocation and can have better resource, reach the fairness of scheduling, and calculate simple, easy to understand and realization.

Obviously, those skilled in the art should be understood that, above-mentioned of the present invention each module or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on network that multiple calculation element forms, alternatively, they can realize with the executable program code of calculation element, thus, they can be stored and be performed by calculation element in the storage device, or they are made into each integrated circuit modules respectively, or the multiple module in them or step are made into single integrated circuit module to realize.Like this, the present invention is not restricted to any specific hardware and software combination.

The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (6)

1. a resource allocation methods, is characterized in that, comprising:

When multiple terminal is scheduled, base station is according to the first information of each terminal in described multiple terminal, be defined as described multiple terminal distribution number of resource blocks, after the number of resource blocks of described multiple terminal is determined, to there being multiple resources preassignment mode, wherein, the described first information is: Signal Interference and Noise Ratio;

Described base station determines a kind of pre-allocation of resources mode according to the second information of each terminal described from described multiple resources preassignment mode;

Described base station is each terminal distribution resource according to a kind of pre-allocation of resources mode determined;

Wherein, when the described first information is Signal Interference and Noise Ratio, described base station is described multiple terminal determination number of resource blocks according to following formula:

wherein, N represents the number of described multiple terminal, num _jrepresent the number of resource blocks of a jth terminal distribution, represent the broadband signal interference-to-noise ratio SINR value of a jth terminal distribution, ceil () expression rounds up, Num _totalrepresent total assignable number of resource blocks.

2. method according to claim 1, is characterized in that, after the number of resource blocks of described multiple terminal is determined, described method also comprises:

According to the channel response of described multiple terminal on frequency domain, to there being multiple resources preassignment mode.

3. method according to claim 1, is characterized in that, when described second information is subband signal interference-to-noise ratio, described base station determines that a kind of pre-allocation of resources mode comprises from described multiple resources preassignment mode:

The weights γ of often kind of pre-allocation of resources mode in the multiple resources preassignment mode according to following formulae discovery of described base station _k:

${\mathrm{\γ}}_k=\underset{j=1}{\overset{N}{\mathrm{\Σ}}}\frac{\mathrm{mean}\left({\mathrm{SINR}}_j\right[{\mathrm{RB}}_{\mathrm{start}}^j...{\mathrm{RB}}_{\mathrm{end}}])}{{\mathrm{num}}_j}=\underset{j=1}{\overset{N}{\mathrm{\Σ}}}\left(\frac{1}{{\mathrm{num}}_j^2}\underset{i={\mathrm{RB}}_{\mathrm{start}}^j}{\overset{{\mathrm{RB}}_{\mathrm{end}}^j}{\mathrm{\Σ}}}{\mathrm{SINR}}_i^j\right),k=1,...,N!,$

Wherein,

The number of multiple terminal described in N,

K is combination sequence number, total N! Individual combination,

Num _jrepresent the number of resource blocks of a jth terminal distribution,

RB represents Resource Block,

Mean represents computing of averaging,

represent the SINR value in the Resource Block section that a jth terminal is distributed when kth combines, with represent the starting and ending sequence number of the Resource Block of a jth terminal distribution respectively;

Described base station is determined to adopt γ _kbeing worth maximum pre-allocation of resources mode is each terminal distribution resource.

4. method according to any one of claim 1 to 2, is characterized in that, described multiple terminal is scheduled and comprises:

Base station is according to the multiple terminal of dispatching criterion execution cost, and wherein, described dispatching criterion at least comprises one of following: the record of maximum appointed information speed, time wheel are named, equitable proportion.

5. a base station, is characterized in that, comprising:

First determination module, for when multiple terminal is scheduled, according to the first information of each terminal in described multiple terminal, be defined as the number of resource blocks of described multiple terminal distribution, after the number of resource blocks of described multiple terminal is determined, to there being multiple resources preassignment mode, wherein, the described first information is: Signal Interference and Noise Ratio;

Second determination module, determines a kind of pre-allocation of resources mode for the second information according to each terminal from described multiple resources preassignment mode;

Distribution module, for being each terminal distribution resource according to a kind of pre-allocation of resources mode determined;

Wherein, when the described first information is Signal Interference and Noise Ratio, described first determination module is specifically for determining the number of resource blocks of described multiple terminal according to following formula:

wherein, N represents the number of described multiple terminal, num _jrepresent the number of resource blocks of a jth terminal distribution, represent the broadband signal interference-to-noise ratio SINR value of a jth terminal distribution, ceil () expression rounds up, Num _totalrepresent total assignable number of resource blocks.

6. base station according to claim 5, it is characterized in that, described second determination module specifically for determining a kind of pre-allocation of resources mode according to following formula when described second information is subband signal interference-to-noise ratio from described multiple resources preassignment mode:

${\mathrm{\γ}}_k=\underset{j=1}{\overset{N}{\mathrm{\Σ}}}\frac{\mathrm{mean}\left({\mathrm{SINR}}_j\right[{\mathrm{RB}}_{\mathrm{start}}^j...{\mathrm{RB}}_{\mathrm{end}}^j\left]\right)}{{\mathrm{num}}_j}=\underset{j=1}{\overset{N}{\mathrm{\Σ}}}\left(\frac{1}{{\mathrm{num}}_j^2}\underset{i={\mathrm{RB}}_{\mathrm{start}}^j}{\overset{{\mathrm{RB}}_{\mathrm{end}}^j}{\mathrm{\Σ}}}{\mathrm{SINR}}_i^j\right),k=1,...,N!,$

Wherein,

The number of multiple terminal described in N,

K is combination sequence number, total N! Individual combination,

Num _jrepresent the number of resource blocks of a jth terminal distribution,

RB represents Resource Block,

Mean represents computing of averaging,

represent the SINR value in the Resource Block section that a jth terminal is distributed when kth combines, with represent the starting and ending sequence number of the Resource Block of a jth terminal distribution respectively, described second determination module is determined to adopt γ _kbeing worth maximum pre-allocation of resources mode is each terminal distribution resource.